check in the original version of dde linux26.

45 files changed, 36138 insertions, 0 deletions

diff --git a/libdde_linux26/contrib/net/.svn/all-wcprops b/libdde_linux26/contrib/net/.svn/all-wcprops
new file mode 100644
index 00000000..5af71256
--- /dev/null
+++ b/libdde_linux26/contrib/net/.svn/all-wcprops
@@ -0,0 +1,11 @@
+K 25
+svn:wc:ra_dav:version-url
+V 62
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net
+END
+socket.c
+K 25
+svn:wc:ra_dav:version-url
+V 71
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/socket.c
+END
diff --git a/libdde_linux26/contrib/net/.svn/entries b/libdde_linux26/contrib/net/.svn/entries
new file mode 100644
index 00000000..042f5985
--- /dev/null
+++ b/libdde_linux26/contrib/net/.svn/entries
@@ -0,0 +1,74 @@
+9
+
+dir
+465
+http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/contrib/net
+http://svn.tudos.org/repos/tudos
+
+
+
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+svn:special svn:externals svn:needs-lock
+
+
+
+
+
+
+
+
+
+
+
+a704ac0b-3a55-4d43-a2a9-7be6f07c34fb
+
+netlink
+dir
+
+sched
+dir
+
+core
+dir
+
+socket.c
+file
+
+
+
+
+2009-11-15T17:16:35.000000Z
+03baa764b9a13ce360545b14ee578b06
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+58332
+
+ethernet
+dir
+
diff --git a/libdde_linux26/contrib/net/.svn/format b/libdde_linux26/contrib/net/.svn/format
new file mode 100644
index 00000000..ec635144
--- /dev/null
+++ b/libdde_linux26/contrib/net/.svn/format
@@ -0,0 +1 @@
+9
diff --git a/libdde_linux26/contrib/net/.svn/text-base/socket.c.svn-base b/libdde_linux26/contrib/net/.svn/text-base/socket.c.svn-base
new file mode 100644
index 00000000..35dd7371
--- /dev/null
+++ b/libdde_linux26/contrib/net/.svn/text-base/socket.c.svn-base
@@ -0,0 +1,2406 @@
+/*
+ * NET		An implementation of the SOCKET network access protocol.
+ *
+ * Version:	@(#)socket.c	1.1.93	18/02/95
+ *
+ * Authors:	Orest Zborowski, <obz@Kodak.COM>
+ *		Ross Biro
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *
+ * Fixes:
+ *		Anonymous	:	NOTSOCK/BADF cleanup. Error fix in
+ *					shutdown()
+ *		Alan Cox	:	verify_area() fixes
+ *		Alan Cox	:	Removed DDI
+ *		Jonathan Kamens	:	SOCK_DGRAM reconnect bug
+ *		Alan Cox	:	Moved a load of checks to the very
+ *					top level.
+ *		Alan Cox	:	Move address structures to/from user
+ *					mode above the protocol layers.
+ *		Rob Janssen	:	Allow 0 length sends.
+ *		Alan Cox	:	Asynchronous I/O support (cribbed from the
+ *					tty drivers).
+ *		Niibe Yutaka	:	Asynchronous I/O for writes (4.4BSD style)
+ *		Jeff Uphoff	:	Made max number of sockets command-line
+ *					configurable.
+ *		Matti Aarnio	:	Made the number of sockets dynamic,
+ *					to be allocated when needed, and mr.
+ *					Uphoff's max is used as max to be
+ *					allowed to allocate.
+ *		Linus		:	Argh. removed all the socket allocation
+ *					altogether: it's in the inode now.
+ *		Alan Cox	:	Made sock_alloc()/sock_release() public
+ *					for NetROM and future kernel nfsd type
+ *					stuff.
+ *		Alan Cox	:	sendmsg/recvmsg basics.
+ *		Tom Dyas	:	Export net symbols.
+ *		Marcin Dalecki	:	Fixed problems with CONFIG_NET="n".
+ *		Alan Cox	:	Added thread locking to sys_* calls
+ *					for sockets. May have errors at the
+ *					moment.
+ *		Kevin Buhr	:	Fixed the dumb errors in the above.
+ *		Andi Kleen	:	Some small cleanups, optimizations,
+ *					and fixed a copy_from_user() bug.
+ *		Tigran Aivazian	:	sys_send(args) calls sys_sendto(args, NULL, 0)
+ *		Tigran Aivazian	:	Made listen(2) backlog sanity checks
+ *					protocol-independent
+ *
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *
+ *	This module is effectively the top level interface to the BSD socket
+ *	paradigm.
+ *
+ *	Based upon Swansea University Computer Society NET3.039
+ */
+
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/file.h>
+#include <linux/net.h>
+#include <linux/interrupt.h>
+#include <linux/thread_info.h>
+#include <linux/rcupdate.h>
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/mutex.h>
+#include <linux/wanrouter.h>
+#include <linux/if_bridge.h>
+#include <linux/if_frad.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/cache.h>
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/mount.h>
+#include <linux/security.h>
+#include <linux/syscalls.h>
+#include <linux/compat.h>
+#include <linux/kmod.h>
+#include <linux/audit.h>
+#include <linux/wireless.h>
+#include <linux/nsproxy.h>
+
+#include <asm/uaccess.h>
+#include <asm/unistd.h>
+
+#include <net/compat.h>
+#include <net/wext.h>
+
+#include <net/sock.h>
+#include <linux/netfilter.h>
+
+static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
+static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
+			 unsigned long nr_segs, loff_t pos);
+static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
+			  unsigned long nr_segs, loff_t pos);
+static int sock_mmap(struct file *file, struct vm_area_struct *vma);
+
+static int sock_close(struct inode *inode, struct file *file);
+static unsigned int sock_poll(struct file *file,
+			      struct poll_table_struct *wait);
+static long sock_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+static long compat_sock_ioctl(struct file *file,
+			      unsigned int cmd, unsigned long arg);
+#endif
+static int sock_fasync(int fd, struct file *filp, int on);
+static ssize_t sock_sendpage(struct file *file, struct page *page,
+			     int offset, size_t size, loff_t *ppos, int more);
+static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
+			        struct pipe_inode_info *pipe, size_t len,
+				unsigned int flags);
+
+/*
+ *	Socket files have a set of 'special' operations as well as the generic file ones. These don't appear
+ *	in the operation structures but are done directly via the socketcall() multiplexor.
+ */
+
+static const struct file_operations socket_file_ops = {
+	.owner =	THIS_MODULE,
+	.llseek =	no_llseek,
+	.aio_read =	sock_aio_read,
+	.aio_write =	sock_aio_write,
+	.poll =		sock_poll,
+	.unlocked_ioctl = sock_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = compat_sock_ioctl,
+#endif
+	.mmap =		sock_mmap,
+	.open =		sock_no_open,	/* special open code to disallow open via /proc */
+	.release =	sock_close,
+	.fasync =	sock_fasync,
+	.sendpage =	sock_sendpage,
+	.splice_write = generic_splice_sendpage,
+	.splice_read =	sock_splice_read,
+};
+
+/*
+ *	The protocol list. Each protocol is registered in here.
+ */
+
+static DEFINE_SPINLOCK(net_family_lock);
+static const struct net_proto_family *net_families[NPROTO] __read_mostly;
+
+/*
+ *	Statistics counters of the socket lists
+ */
+
+static DEFINE_PER_CPU(int, sockets_in_use) = 0;
+
+/*
+ * Support routines.
+ * Move socket addresses back and forth across the kernel/user
+ * divide and look after the messy bits.
+ */
+
+#define MAX_SOCK_ADDR	128		/* 108 for Unix domain -
+					   16 for IP, 16 for IPX,
+					   24 for IPv6,
+					   about 80 for AX.25
+					   must be at least one bigger than
+					   the AF_UNIX size (see net/unix/af_unix.c
+					   :unix_mkname()).
+					 */
+
+/**
+ *	move_addr_to_kernel	-	copy a socket address into kernel space
+ *	@uaddr: Address in user space
+ *	@kaddr: Address in kernel space
+ *	@ulen: Length in user space
+ *
+ *	The address is copied into kernel space. If the provided address is
+ *	too long an error code of -EINVAL is returned. If the copy gives
+ *	invalid addresses -EFAULT is returned. On a success 0 is returned.
+ */
+
+int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr)
+{
+	if (ulen < 0 || ulen > sizeof(struct sockaddr_storage))
+		return -EINVAL;
+	if (ulen == 0)
+		return 0;
+	if (copy_from_user(kaddr, uaddr, ulen))
+		return -EFAULT;
+	return audit_sockaddr(ulen, kaddr);
+}
+
+/**
+ *	move_addr_to_user	-	copy an address to user space
+ *	@kaddr: kernel space address
+ *	@klen: length of address in kernel
+ *	@uaddr: user space address
+ *	@ulen: pointer to user length field
+ *
+ *	The value pointed to by ulen on entry is the buffer length available.
+ *	This is overwritten with the buffer space used. -EINVAL is returned
+ *	if an overlong buffer is specified or a negative buffer size. -EFAULT
+ *	is returned if either the buffer or the length field are not
+ *	accessible.
+ *	After copying the data up to the limit the user specifies, the true
+ *	length of the data is written over the length limit the user
+ *	specified. Zero is returned for a success.
+ */
+
+int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr,
+		      int __user *ulen)
+{
+	int err;
+	int len;
+
+	err = get_user(len, ulen);
+	if (err)
+		return err;
+	if (len > klen)
+		len = klen;
+	if (len < 0 || len > sizeof(struct sockaddr_storage))
+		return -EINVAL;
+	if (len) {
+		if (audit_sockaddr(klen, kaddr))
+			return -ENOMEM;
+		if (copy_to_user(uaddr, kaddr, len))
+			return -EFAULT;
+	}
+	/*
+	 *      "fromlen shall refer to the value before truncation.."
+	 *                      1003.1g
+	 */
+	return __put_user(klen, ulen);
+}
+
+#define SOCKFS_MAGIC 0x534F434B
+
+static struct kmem_cache *sock_inode_cachep __read_mostly;
+
+static struct inode *sock_alloc_inode(struct super_block *sb)
+{
+	struct socket_alloc *ei;
+
+	ei = kmem_cache_alloc(sock_inode_cachep, GFP_KERNEL);
+	if (!ei)
+		return NULL;
+	init_waitqueue_head(&ei->socket.wait);
+
+	ei->socket.fasync_list = NULL;
+	ei->socket.state = SS_UNCONNECTED;
+	ei->socket.flags = 0;
+	ei->socket.ops = NULL;
+	ei->socket.sk = NULL;
+	ei->socket.file = NULL;
+
+	return &ei->vfs_inode;
+}
+
+static void sock_destroy_inode(struct inode *inode)
+{
+	kmem_cache_free(sock_inode_cachep,
+			container_of(inode, struct socket_alloc, vfs_inode));
+}
+
+static void init_once(void *foo)
+{
+	struct socket_alloc *ei = (struct socket_alloc *)foo;
+
+	inode_init_once(&ei->vfs_inode);
+}
+
+static int init_inodecache(void)
+{
+	sock_inode_cachep = kmem_cache_create("sock_inode_cache",
+					      sizeof(struct socket_alloc),
+					      0,
+					      (SLAB_HWCACHE_ALIGN |
+					       SLAB_RECLAIM_ACCOUNT |
+					       SLAB_MEM_SPREAD),
+					      init_once);
+	if (sock_inode_cachep == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
+static struct super_operations sockfs_ops = {
+	.alloc_inode =	sock_alloc_inode,
+	.destroy_inode =sock_destroy_inode,
+	.statfs =	simple_statfs,
+};
+
+static int sockfs_get_sb(struct file_system_type *fs_type,
+			 int flags, const char *dev_name, void *data,
+			 struct vfsmount *mnt)
+{
+	return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC,
+			     mnt);
+}
+
+static struct vfsmount *sock_mnt __read_mostly;
+
+static struct file_system_type sock_fs_type = {
+	.name =		"sockfs",
+	.get_sb =	sockfs_get_sb,
+	.kill_sb =	kill_anon_super,
+};
+
+static int sockfs_delete_dentry(struct dentry *dentry)
+{
+	/*
+	 * At creation time, we pretended this dentry was hashed
+	 * (by clearing DCACHE_UNHASHED bit in d_flags)
+	 * At delete time, we restore the truth : not hashed.
+	 * (so that dput() can proceed correctly)
+	 */
+	dentry->d_flags |= DCACHE_UNHASHED;
+	return 0;
+}
+
+/*
+ * sockfs_dname() is called from d_path().
+ */
+static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen)
+{
+	return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]",
+				dentry->d_inode->i_ino);
+}
+
+static struct dentry_operations sockfs_dentry_operations = {
+	.d_delete = sockfs_delete_dentry,
+	.d_dname  = sockfs_dname,
+};
+
+/*
+ *	Obtains the first available file descriptor and sets it up for use.
+ *
+ *	These functions create file structures and maps them to fd space
+ *	of the current process. On success it returns file descriptor
+ *	and file struct implicitly stored in sock->file.
+ *	Note that another thread may close file descriptor before we return
+ *	from this function. We use the fact that now we do not refer
+ *	to socket after mapping. If one day we will need it, this
+ *	function will increment ref. count on file by 1.
+ *
+ *	In any case returned fd MAY BE not valid!
+ *	This race condition is unavoidable
+ *	with shared fd spaces, we cannot solve it inside kernel,
+ *	but we take care of internal coherence yet.
+ */
+
+static int sock_alloc_fd(struct file **filep, int flags)
+{
+	int fd;
+
+	fd = get_unused_fd_flags(flags);
+	if (likely(fd >= 0)) {
+		struct file *file = get_empty_filp();
+
+		*filep = file;
+		if (unlikely(!file)) {
+			put_unused_fd(fd);
+			return -ENFILE;
+		}
+	} else
+		*filep = NULL;
+	return fd;
+}
+
+static int sock_attach_fd(struct socket *sock, struct file *file, int flags)
+{
+	struct dentry *dentry;
+	struct qstr name = { .name = "" };
+
+	dentry = d_alloc(sock_mnt->mnt_sb->s_root, &name);
+	if (unlikely(!dentry))
+		return -ENOMEM;
+
+	dentry->d_op = &sockfs_dentry_operations;
+	/*
+	 * We dont want to push this dentry into global dentry hash table.
+	 * We pretend dentry is already hashed, by unsetting DCACHE_UNHASHED
+	 * This permits a working /proc/$pid/fd/XXX on sockets
+	 */
+	dentry->d_flags &= ~DCACHE_UNHASHED;
+	d_instantiate(dentry, SOCK_INODE(sock));
+
+	sock->file = file;
+	init_file(file, sock_mnt, dentry, FMODE_READ | FMODE_WRITE,
+		  &socket_file_ops);
+	SOCK_INODE(sock)->i_fop = &socket_file_ops;
+	file->f_flags = O_RDWR | (flags & O_NONBLOCK);
+	file->f_pos = 0;
+	file->private_data = sock;
+
+	return 0;
+}
+
+int sock_map_fd(struct socket *sock, int flags)
+{
+	struct file *newfile;
+	int fd = sock_alloc_fd(&newfile, flags);
+
+	if (likely(fd >= 0)) {
+		int err = sock_attach_fd(sock, newfile, flags);
+
+		if (unlikely(err < 0)) {
+			put_filp(newfile);
+			put_unused_fd(fd);
+			return err;
+		}
+		fd_install(fd, newfile);
+	}
+	return fd;
+}
+
+static struct socket *sock_from_file(struct file *file, int *err)
+{
+	if (file->f_op == &socket_file_ops)
+		return file->private_data;	/* set in sock_map_fd */
+
+	*err = -ENOTSOCK;
+	return NULL;
+}
+
+/**
+ *	sockfd_lookup	- 	Go from a file number to its socket slot
+ *	@fd: file handle
+ *	@err: pointer to an error code return
+ *
+ *	The file handle passed in is locked and the socket it is bound
+ *	too is returned. If an error occurs the err pointer is overwritten
+ *	with a negative errno code and NULL is returned. The function checks
+ *	for both invalid handles and passing a handle which is not a socket.
+ *
+ *	On a success the socket object pointer is returned.
+ */
+
+struct socket *sockfd_lookup(int fd, int *err)
+{
+	struct file *file;
+	struct socket *sock;
+
+	file = fget(fd);
+	if (!file) {
+		*err = -EBADF;
+		return NULL;
+	}
+
+	sock = sock_from_file(file, err);
+	if (!sock)
+		fput(file);
+	return sock;
+}
+
+static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
+{
+	struct file *file;
+	struct socket *sock;
+
+	*err = -EBADF;
+	file = fget_light(fd, fput_needed);
+	if (file) {
+		sock = sock_from_file(file, err);
+		if (sock)
+			return sock;
+		fput_light(file, *fput_needed);
+	}
+	return NULL;
+}
+
+/**
+ *	sock_alloc	-	allocate a socket
+ *
+ *	Allocate a new inode and socket object. The two are bound together
+ *	and initialised. The socket is then returned. If we are out of inodes
+ *	NULL is returned.
+ */
+
+static struct socket *sock_alloc(void)
+{
+	struct inode *inode;
+	struct socket *sock;
+
+	inode = new_inode(sock_mnt->mnt_sb);
+	if (!inode)
+		return NULL;
+
+	sock = SOCKET_I(inode);
+
+	inode->i_mode = S_IFSOCK | S_IRWXUGO;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
+
+	get_cpu_var(sockets_in_use)++;
+	put_cpu_var(sockets_in_use);
+	return sock;
+}
+
+/*
+ *	In theory you can't get an open on this inode, but /proc provides
+ *	a back door. Remember to keep it shut otherwise you'll let the
+ *	creepy crawlies in.
+ */
+
+static int sock_no_open(struct inode *irrelevant, struct file *dontcare)
+{
+	return -ENXIO;
+}
+
+const struct file_operations bad_sock_fops = {
+	.owner = THIS_MODULE,
+	.open = sock_no_open,
+};
+
+/**
+ *	sock_release	-	close a socket
+ *	@sock: socket to close
+ *
+ *	The socket is released from the protocol stack if it has a release
+ *	callback, and the inode is then released if the socket is bound to
+ *	an inode not a file.
+ */
+
+void sock_release(struct socket *sock)
+{
+	if (sock->ops) {
+		struct module *owner = sock->ops->owner;
+
+		sock->ops->release(sock);
+		sock->ops = NULL;
+		module_put(owner);
+	}
+
+	if (sock->fasync_list)
+		printk(KERN_ERR "sock_release: fasync list not empty!\n");
+
+	get_cpu_var(sockets_in_use)--;
+	put_cpu_var(sockets_in_use);
+	if (!sock->file) {
+		iput(SOCK_INODE(sock));
+		return;
+	}
+	sock->file = NULL;
+}
+
+static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
+				 struct msghdr *msg, size_t size)
+{
+	struct sock_iocb *si = kiocb_to_siocb(iocb);
+	int err;
+
+	si->sock = sock;
+	si->scm = NULL;
+	si->msg = msg;
+	si->size = size;
+
+	err = security_socket_sendmsg(sock, msg, size);
+	if (err)
+		return err;
+
+	return sock->ops->sendmsg(iocb, sock, msg, size);
+}
+
+int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
+{
+	struct kiocb iocb;
+	struct sock_iocb siocb;
+	int ret;
+
+	init_sync_kiocb(&iocb, NULL);
+	iocb.private = &siocb;
+	ret = __sock_sendmsg(&iocb, sock, msg, size);
+	if (-EIOCBQUEUED == ret)
+		ret = wait_on_sync_kiocb(&iocb);
+	return ret;
+}
+
+int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
+		   struct kvec *vec, size_t num, size_t size)
+{
+	mm_segment_t oldfs = get_fs();
+	int result;
+
+	set_fs(KERNEL_DS);
+	/*
+	 * the following is safe, since for compiler definitions of kvec and
+	 * iovec are identical, yielding the same in-core layout and alignment
+	 */
+	msg->msg_iov = (struct iovec *)vec;
+	msg->msg_iovlen = num;
+	result = sock_sendmsg(sock, msg, size);
+	set_fs(oldfs);
+	return result;
+}
+
+/*
+ * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP)
+ */
+void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
+	struct sk_buff *skb)
+{
+	ktime_t kt = skb->tstamp;
+
+	if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) {
+		struct timeval tv;
+		/* Race occurred between timestamp enabling and packet
+		   receiving.  Fill in the current time for now. */
+		if (kt.tv64 == 0)
+			kt = ktime_get_real();
+		skb->tstamp = kt;
+		tv = ktime_to_timeval(kt);
+		put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMP, sizeof(tv), &tv);
+	} else {
+		struct timespec ts;
+		/* Race occurred between timestamp enabling and packet
+		   receiving.  Fill in the current time for now. */
+		if (kt.tv64 == 0)
+			kt = ktime_get_real();
+		skb->tstamp = kt;
+		ts = ktime_to_timespec(kt);
+		put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPNS, sizeof(ts), &ts);
+	}
+}
+
+EXPORT_SYMBOL_GPL(__sock_recv_timestamp);
+
+static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
+				 struct msghdr *msg, size_t size, int flags)
+{
+	int err;
+	struct sock_iocb *si = kiocb_to_siocb(iocb);
+
+	si->sock = sock;
+	si->scm = NULL;
+	si->msg = msg;
+	si->size = size;
+	si->flags = flags;
+
+	err = security_socket_recvmsg(sock, msg, size, flags);
+	if (err)
+		return err;
+
+	return sock->ops->recvmsg(iocb, sock, msg, size, flags);
+}
+
+int sock_recvmsg(struct socket *sock, struct msghdr *msg,
+		 size_t size, int flags)
+{
+	struct kiocb iocb;
+	struct sock_iocb siocb;
+	int ret;
+
+	init_sync_kiocb(&iocb, NULL);
+	iocb.private = &siocb;
+	ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
+	if (-EIOCBQUEUED == ret)
+		ret = wait_on_sync_kiocb(&iocb);
+	return ret;
+}
+
+int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
+		   struct kvec *vec, size_t num, size_t size, int flags)
+{
+	mm_segment_t oldfs = get_fs();
+	int result;
+
+	set_fs(KERNEL_DS);
+	/*
+	 * the following is safe, since for compiler definitions of kvec and
+	 * iovec are identical, yielding the same in-core layout and alignment
+	 */
+	msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num;
+	result = sock_recvmsg(sock, msg, size, flags);
+	set_fs(oldfs);
+	return result;
+}
+
+static void sock_aio_dtor(struct kiocb *iocb)
+{
+	kfree(iocb->private);
+}
+
+static ssize_t sock_sendpage(struct file *file, struct page *page,
+			     int offset, size_t size, loff_t *ppos, int more)
+{
+	struct socket *sock;
+	int flags;
+
+	sock = file->private_data;
+
+	flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+	if (more)
+		flags |= MSG_MORE;
+
+	return sock->ops->sendpage(sock, page, offset, size, flags);
+}
+
+static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
+			        struct pipe_inode_info *pipe, size_t len,
+				unsigned int flags)
+{
+	struct socket *sock = file->private_data;
+
+	if (unlikely(!sock->ops->splice_read))
+		return -EINVAL;
+
+	return sock->ops->splice_read(sock, ppos, pipe, len, flags);
+}
+
+static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
+					 struct sock_iocb *siocb)
+{
+	if (!is_sync_kiocb(iocb)) {
+		siocb = kmalloc(sizeof(*siocb), GFP_KERNEL);
+		if (!siocb)
+			return NULL;
+		iocb->ki_dtor = sock_aio_dtor;
+	}
+
+	siocb->kiocb = iocb;
+	iocb->private = siocb;
+	return siocb;
+}
+
+static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
+		struct file *file, const struct iovec *iov,
+		unsigned long nr_segs)
+{
+	struct socket *sock = file->private_data;
+	size_t size = 0;
+	int i;
+
+	for (i = 0; i < nr_segs; i++)
+		size += iov[i].iov_len;
+
+	msg->msg_name = NULL;
+	msg->msg_namelen = 0;
+	msg->msg_control = NULL;
+	msg->msg_controllen = 0;
+	msg->msg_iov = (struct iovec *)iov;
+	msg->msg_iovlen = nr_segs;
+	msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+
+	return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
+}
+
+static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
+				unsigned long nr_segs, loff_t pos)
+{
+	struct sock_iocb siocb, *x;
+
+	if (pos != 0)
+		return -ESPIPE;
+
+	if (iocb->ki_left == 0)	/* Match SYS5 behaviour */
+		return 0;
+
+
+	x = alloc_sock_iocb(iocb, &siocb);
+	if (!x)
+		return -ENOMEM;
+	return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs);
+}
+
+static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
+			struct file *file, const struct iovec *iov,
+			unsigned long nr_segs)
+{
+	struct socket *sock = file->private_data;
+	size_t size = 0;
+	int i;
+
+	for (i = 0; i < nr_segs; i++)
+		size += iov[i].iov_len;
+
+	msg->msg_name = NULL;
+	msg->msg_namelen = 0;
+	msg->msg_control = NULL;
+	msg->msg_controllen = 0;
+	msg->msg_iov = (struct iovec *)iov;
+	msg->msg_iovlen = nr_segs;
+	msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+	if (sock->type == SOCK_SEQPACKET)
+		msg->msg_flags |= MSG_EOR;
+
+	return __sock_sendmsg(iocb, sock, msg, size);
+}
+
+static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
+			  unsigned long nr_segs, loff_t pos)
+{
+	struct sock_iocb siocb, *x;
+
+	if (pos != 0)
+		return -ESPIPE;
+
+	x = alloc_sock_iocb(iocb, &siocb);
+	if (!x)
+		return -ENOMEM;
+
+	return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs);
+}
+
+/*
+ * Atomic setting of ioctl hooks to avoid race
+ * with module unload.
+ */
+
+static DEFINE_MUTEX(br_ioctl_mutex);
+static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg) = NULL;
+
+void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *))
+{
+	mutex_lock(&br_ioctl_mutex);
+	br_ioctl_hook = hook;
+	mutex_unlock(&br_ioctl_mutex);
+}
+
+EXPORT_SYMBOL(brioctl_set);
+
+static DEFINE_MUTEX(vlan_ioctl_mutex);
+static int (*vlan_ioctl_hook) (struct net *, void __user *arg);
+
+void vlan_ioctl_set(int (*hook) (struct net *, void __user *))
+{
+	mutex_lock(&vlan_ioctl_mutex);
+	vlan_ioctl_hook = hook;
+	mutex_unlock(&vlan_ioctl_mutex);
+}
+
+EXPORT_SYMBOL(vlan_ioctl_set);
+
+static DEFINE_MUTEX(dlci_ioctl_mutex);
+static int (*dlci_ioctl_hook) (unsigned int, void __user *);
+
+void dlci_ioctl_set(int (*hook) (unsigned int, void __user *))
+{
+	mutex_lock(&dlci_ioctl_mutex);
+	dlci_ioctl_hook = hook;
+	mutex_unlock(&dlci_ioctl_mutex);
+}
+
+EXPORT_SYMBOL(dlci_ioctl_set);
+
+/*
+ *	With an ioctl, arg may well be a user mode pointer, but we don't know
+ *	what to do with it - that's up to the protocol still.
+ */
+
+static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
+{
+	struct socket *sock;
+	struct sock *sk;
+	void __user *argp = (void __user *)arg;
+	int pid, err;
+	struct net *net;
+
+	sock = file->private_data;
+	sk = sock->sk;
+	net = sock_net(sk);
+	if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
+		err = dev_ioctl(net, cmd, argp);
+	} else
+#ifdef CONFIG_WIRELESS_EXT
+	if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
+		err = dev_ioctl(net, cmd, argp);
+	} else
+#endif				/* CONFIG_WIRELESS_EXT */
+		switch (cmd) {
+		case FIOSETOWN:
+		case SIOCSPGRP:
+			err = -EFAULT;
+			if (get_user(pid, (int __user *)argp))
+				break;
+			err = f_setown(sock->file, pid, 1);
+			break;
+		case FIOGETOWN:
+		case SIOCGPGRP:
+			err = put_user(f_getown(sock->file),
+				       (int __user *)argp);
+			break;
+		case SIOCGIFBR:
+		case SIOCSIFBR:
+		case SIOCBRADDBR:
+		case SIOCBRDELBR:
+			err = -ENOPKG;
+			if (!br_ioctl_hook)
+				request_module("bridge");
+
+			mutex_lock(&br_ioctl_mutex);
+			if (br_ioctl_hook)
+				err = br_ioctl_hook(net, cmd, argp);
+			mutex_unlock(&br_ioctl_mutex);
+			break;
+		case SIOCGIFVLAN:
+		case SIOCSIFVLAN:
+			err = -ENOPKG;
+			if (!vlan_ioctl_hook)
+				request_module("8021q");
+
+			mutex_lock(&vlan_ioctl_mutex);
+			if (vlan_ioctl_hook)
+				err = vlan_ioctl_hook(net, argp);
+			mutex_unlock(&vlan_ioctl_mutex);
+			break;
+		case SIOCADDDLCI:
+		case SIOCDELDLCI:
+			err = -ENOPKG;
+			if (!dlci_ioctl_hook)
+				request_module("dlci");
+
+			mutex_lock(&dlci_ioctl_mutex);
+			if (dlci_ioctl_hook)
+				err = dlci_ioctl_hook(cmd, argp);
+			mutex_unlock(&dlci_ioctl_mutex);
+			break;
+		default:
+			err = sock->ops->ioctl(sock, cmd, arg);
+
+			/*
+			 * If this ioctl is unknown try to hand it down
+			 * to the NIC driver.
+			 */
+			if (err == -ENOIOCTLCMD)
+				err = dev_ioctl(net, cmd, argp);
+			break;
+		}
+	return err;
+}
+
+int sock_create_lite(int family, int type, int protocol, struct socket **res)
+{
+	int err;
+	struct socket *sock = NULL;
+
+	err = security_socket_create(family, type, protocol, 1);
+	if (err)
+		goto out;
+
+	sock = sock_alloc();
+	if (!sock) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	sock->type = type;
+	err = security_socket_post_create(sock, family, type, protocol, 1);
+	if (err)
+		goto out_release;
+
+out:
+	*res = sock;
+	return err;
+out_release:
+	sock_release(sock);
+	sock = NULL;
+	goto out;
+}
+
+/* No kernel lock held - perfect */
+static unsigned int sock_poll(struct file *file, poll_table *wait)
+{
+	struct socket *sock;
+
+	/*
+	 *      We can't return errors to poll, so it's either yes or no.
+	 */
+	sock = file->private_data;
+	return sock->ops->poll(file, sock, wait);
+}
+
+static int sock_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct socket *sock = file->private_data;
+
+	return sock->ops->mmap(file, sock, vma);
+}
+
+static int sock_close(struct inode *inode, struct file *filp)
+{
+	/*
+	 *      It was possible the inode is NULL we were
+	 *      closing an unfinished socket.
+	 */
+
+	if (!inode) {
+		printk(KERN_DEBUG "sock_close: NULL inode\n");
+		return 0;
+	}
+	sock_release(SOCKET_I(inode));
+	return 0;
+}
+
+/*
+ *	Update the socket async list
+ *
+ *	Fasync_list locking strategy.
+ *
+ *	1. fasync_list is modified only under process context socket lock
+ *	   i.e. under semaphore.
+ *	2. fasync_list is used under read_lock(&sk->sk_callback_lock)
+ *	   or under socket lock.
+ *	3. fasync_list can be used from softirq context, so that
+ *	   modification under socket lock have to be enhanced with
+ *	   write_lock_bh(&sk->sk_callback_lock).
+ *							--ANK (990710)
+ */
+
+static int sock_fasync(int fd, struct file *filp, int on)
+{
+	struct fasync_struct *fa, *fna = NULL, **prev;
+	struct socket *sock;
+	struct sock *sk;
+
+	if (on) {
+		fna = kmalloc(sizeof(struct fasync_struct), GFP_KERNEL);
+		if (fna == NULL)
+			return -ENOMEM;
+	}
+
+	sock = filp->private_data;
+
+	sk = sock->sk;
+	if (sk == NULL) {
+		kfree(fna);
+		return -EINVAL;
+	}
+
+	lock_sock(sk);
+
+	prev = &(sock->fasync_list);
+
+	for (fa = *prev; fa != NULL; prev = &fa->fa_next, fa = *prev)
+		if (fa->fa_file == filp)
+			break;
+
+	if (on) {
+		if (fa != NULL) {
+			write_lock_bh(&sk->sk_callback_lock);
+			fa->fa_fd = fd;
+			write_unlock_bh(&sk->sk_callback_lock);
+
+			kfree(fna);
+			goto out;
+		}
+		fna->fa_file = filp;
+		fna->fa_fd = fd;
+		fna->magic = FASYNC_MAGIC;
+		fna->fa_next = sock->fasync_list;
+		write_lock_bh(&sk->sk_callback_lock);
+		sock->fasync_list = fna;
+		write_unlock_bh(&sk->sk_callback_lock);
+	} else {
+		if (fa != NULL) {
+			write_lock_bh(&sk->sk_callback_lock);
+			*prev = fa->fa_next;
+			write_unlock_bh(&sk->sk_callback_lock);
+			kfree(fa);
+		}
+	}
+
+out:
+	release_sock(sock->sk);
+	return 0;
+}
+
+/* This function may be called only under socket lock or callback_lock */
+
+int sock_wake_async(struct socket *sock, int how, int band)
+{
+	if (!sock || !sock->fasync_list)
+		return -1;
+	switch (how) {
+	case SOCK_WAKE_WAITD:
+		if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
+			break;
+		goto call_kill;
+	case SOCK_WAKE_SPACE:
+		if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags))
+			break;
+		/* fall through */
+	case SOCK_WAKE_IO:
+call_kill:
+		__kill_fasync(sock->fasync_list, SIGIO, band);
+		break;
+	case SOCK_WAKE_URG:
+		__kill_fasync(sock->fasync_list, SIGURG, band);
+	}
+	return 0;
+}
+
+static int __sock_create(struct net *net, int family, int type, int protocol,
+			 struct socket **res, int kern)
+{
+	int err;
+	struct socket *sock;
+	const struct net_proto_family *pf;
+
+	/*
+	 *      Check protocol is in range
+	 */
+	if (family < 0 || family >= NPROTO)
+		return -EAFNOSUPPORT;
+	if (type < 0 || type >= SOCK_MAX)
+		return -EINVAL;
+
+	/* Compatibility.
+
+	   This uglymoron is moved from INET layer to here to avoid
+	   deadlock in module load.
+	 */
+	if (family == PF_INET && type == SOCK_PACKET) {
+		static int warned;
+		if (!warned) {
+			warned = 1;
+			printk(KERN_INFO "%s uses obsolete (PF_INET,SOCK_PACKET)\n",
+			       current->comm);
+		}
+		family = PF_PACKET;
+	}
+
+	err = security_socket_create(family, type, protocol, kern);
+	if (err)
+		return err;
+
+	/*
+	 *	Allocate the socket and allow the family to set things up. if
+	 *	the protocol is 0, the family is instructed to select an appropriate
+	 *	default.
+	 */
+	sock = sock_alloc();
+	if (!sock) {
+		if (net_ratelimit())
+			printk(KERN_WARNING "socket: no more sockets\n");
+		return -ENFILE;	/* Not exactly a match, but its the
+				   closest posix thing */
+	}
+
+	sock->type = type;
+
+#ifdef CONFIG_MODULES
+	/* Attempt to load a protocol module if the find failed.
+	 *
+	 * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user
+	 * requested real, full-featured networking support upon configuration.
+	 * Otherwise module support will break!
+	 */
+	if (net_families[family] == NULL)
+		request_module("net-pf-%d", family);
+#endif
+
+	rcu_read_lock();
+	pf = rcu_dereference(net_families[family]);
+	err = -EAFNOSUPPORT;
+	if (!pf)
+		goto out_release;
+
+	/*
+	 * We will call the ->create function, that possibly is in a loadable
+	 * module, so we have to bump that loadable module refcnt first.
+	 */
+	if (!try_module_get(pf->owner))
+		goto out_release;
+
+	/* Now protected by module ref count */
+	rcu_read_unlock();
+
+	err = pf->create(net, sock, protocol);
+	if (err < 0)
+		goto out_module_put;
+
+	/*
+	 * Now to bump the refcnt of the [loadable] module that owns this
+	 * socket at sock_release time we decrement its refcnt.
+	 */
+	if (!try_module_get(sock->ops->owner))
+		goto out_module_busy;
+
+	/*
+	 * Now that we're done with the ->create function, the [loadable]
+	 * module can have its refcnt decremented
+	 */
+	module_put(pf->owner);
+	err = security_socket_post_create(sock, family, type, protocol, kern);
+	if (err)
+		goto out_sock_release;
+	*res = sock;
+
+	return 0;
+
+out_module_busy:
+	err = -EAFNOSUPPORT;
+out_module_put:
+	sock->ops = NULL;
+	module_put(pf->owner);
+out_sock_release:
+	sock_release(sock);
+	return err;
+
+out_release:
+	rcu_read_unlock();
+	goto out_sock_release;
+}
+
+int sock_create(int family, int type, int protocol, struct socket **res)
+{
+	return __sock_create(current->nsproxy->net_ns, family, type, protocol, res, 0);
+}
+
+int sock_create_kern(int family, int type, int protocol, struct socket **res)
+{
+	return __sock_create(&init_net, family, type, protocol, res, 1);
+}
+
+SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
+{
+	int retval;
+	struct socket *sock;
+	int flags;
+
+	/* Check the SOCK_* constants for consistency.  */
+	BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC);
+	BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK);
+	BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK);
+	BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK);
+
+	flags = type & ~SOCK_TYPE_MASK;
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
+		return -EINVAL;
+	type &= SOCK_TYPE_MASK;
+
+	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
+		flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK;
+
+	retval = sock_create(family, type, protocol, &sock);
+	if (retval < 0)
+		goto out;
+
+	retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK));
+	if (retval < 0)
+		goto out_release;
+
+out:
+	/* It may be already another descriptor 8) Not kernel problem. */
+	return retval;
+
+out_release:
+	sock_release(sock);
+	return retval;
+}
+
+/*
+ *	Create a pair of connected sockets.
+ */
+
+SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol,
+		int __user *, usockvec)
+{
+	struct socket *sock1, *sock2;
+	int fd1, fd2, err;
+	struct file *newfile1, *newfile2;
+	int flags;
+
+	flags = type & ~SOCK_TYPE_MASK;
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
+		return -EINVAL;
+	type &= SOCK_TYPE_MASK;
+
+	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
+		flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK;
+
+	/*
+	 * Obtain the first socket and check if the underlying protocol
+	 * supports the socketpair call.
+	 */
+
+	err = sock_create(family, type, protocol, &sock1);
+	if (err < 0)
+		goto out;
+
+	err = sock_create(family, type, protocol, &sock2);
+	if (err < 0)
+		goto out_release_1;
+
+	err = sock1->ops->socketpair(sock1, sock2);
+	if (err < 0)
+		goto out_release_both;
+
+	fd1 = sock_alloc_fd(&newfile1, flags & O_CLOEXEC);
+	if (unlikely(fd1 < 0)) {
+		err = fd1;
+		goto out_release_both;
+	}
+
+	fd2 = sock_alloc_fd(&newfile2, flags & O_CLOEXEC);
+	if (unlikely(fd2 < 0)) {
+		err = fd2;
+		put_filp(newfile1);
+		put_unused_fd(fd1);
+		goto out_release_both;
+	}
+
+	err = sock_attach_fd(sock1, newfile1, flags & O_NONBLOCK);
+	if (unlikely(err < 0)) {
+		goto out_fd2;
+	}
+
+	err = sock_attach_fd(sock2, newfile2, flags & O_NONBLOCK);
+	if (unlikely(err < 0)) {
+		fput(newfile1);
+		goto out_fd1;
+	}
+
+	audit_fd_pair(fd1, fd2);
+	fd_install(fd1, newfile1);
+	fd_install(fd2, newfile2);
+	/* fd1 and fd2 may be already another descriptors.
+	 * Not kernel problem.
+	 */
+
+	err = put_user(fd1, &usockvec[0]);
+	if (!err)
+		err = put_user(fd2, &usockvec[1]);
+	if (!err)
+		return 0;
+
+	sys_close(fd2);
+	sys_close(fd1);
+	return err;
+
+out_release_both:
+	sock_release(sock2);
+out_release_1:
+	sock_release(sock1);
+out:
+	return err;
+
+out_fd2:
+	put_filp(newfile1);
+	sock_release(sock1);
+out_fd1:
+	put_filp(newfile2);
+	sock_release(sock2);
+	put_unused_fd(fd1);
+	put_unused_fd(fd2);
+	goto out;
+}
+
+/*
+ *	Bind a name to a socket. Nothing much to do here since it's
+ *	the protocol's responsibility to handle the local address.
+ *
+ *	We move the socket address to kernel space before we call
+ *	the protocol layer (having also checked the address is ok).
+ */
+
+SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock) {
+		err = move_addr_to_kernel(umyaddr, addrlen, (struct sockaddr *)&address);
+		if (err >= 0) {
+			err = security_socket_bind(sock,
+						   (struct sockaddr *)&address,
+						   addrlen);
+			if (!err)
+				err = sock->ops->bind(sock,
+						      (struct sockaddr *)
+						      &address, addrlen);
+		}
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Perform a listen. Basically, we allow the protocol to do anything
+ *	necessary for a listen, and if that works, we mark the socket as
+ *	ready for listening.
+ */
+
+SYSCALL_DEFINE2(listen, int, fd, int, backlog)
+{
+	struct socket *sock;
+	int err, fput_needed;
+	int somaxconn;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock) {
+		somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn;
+		if ((unsigned)backlog > somaxconn)
+			backlog = somaxconn;
+
+		err = security_socket_listen(sock, backlog);
+		if (!err)
+			err = sock->ops->listen(sock, backlog);
+
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	For accept, we attempt to create a new socket, set up the link
+ *	with the client, wake up the client, then return the new
+ *	connected fd. We collect the address of the connector in kernel
+ *	space and move it to user at the very end. This is unclean because
+ *	we open the socket then return an error.
+ *
+ *	1003.1g adds the ability to recvmsg() to query connection pending
+ *	status to recvmsg. We need to add that support in a way thats
+ *	clean when we restucture accept also.
+ */
+
+SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
+		int __user *, upeer_addrlen, int, flags)
+{
+	struct socket *sock, *newsock;
+	struct file *newfile;
+	int err, len, newfd, fput_needed;
+	struct sockaddr_storage address;
+
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
+		return -EINVAL;
+
+	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
+		flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	err = -ENFILE;
+	if (!(newsock = sock_alloc()))
+		goto out_put;
+
+	newsock->type = sock->type;
+	newsock->ops = sock->ops;
+
+	/*
+	 * We don't need try_module_get here, as the listening socket (sock)
+	 * has the protocol module (sock->ops->owner) held.
+	 */
+	__module_get(newsock->ops->owner);
+
+	newfd = sock_alloc_fd(&newfile, flags & O_CLOEXEC);
+	if (unlikely(newfd < 0)) {
+		err = newfd;
+		sock_release(newsock);
+		goto out_put;
+	}
+
+	err = sock_attach_fd(newsock, newfile, flags & O_NONBLOCK);
+	if (err < 0)
+		goto out_fd_simple;
+
+	err = security_socket_accept(sock, newsock);
+	if (err)
+		goto out_fd;
+
+	err = sock->ops->accept(sock, newsock, sock->file->f_flags);
+	if (err < 0)
+		goto out_fd;
+
+	if (upeer_sockaddr) {
+		if (newsock->ops->getname(newsock, (struct sockaddr *)&address,
+					  &len, 2) < 0) {
+			err = -ECONNABORTED;
+			goto out_fd;
+		}
+		err = move_addr_to_user((struct sockaddr *)&address,
+					len, upeer_sockaddr, upeer_addrlen);
+		if (err < 0)
+			goto out_fd;
+	}
+
+	/* File flags are not inherited via accept() unlike another OSes. */
+
+	fd_install(newfd, newfile);
+	err = newfd;
+
+	security_socket_post_accept(sock, newsock);
+
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+out_fd_simple:
+	sock_release(newsock);
+	put_filp(newfile);
+	put_unused_fd(newfd);
+	goto out_put;
+out_fd:
+	fput(newfile);
+	put_unused_fd(newfd);
+	goto out_put;
+}
+
+SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr,
+		int __user *, upeer_addrlen)
+{
+	return sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0);
+}
+
+/*
+ *	Attempt to connect to a socket with the server address.  The address
+ *	is in user space so we verify it is OK and move it to kernel space.
+ *
+ *	For 1003.1g we need to add clean support for a bind to AF_UNSPEC to
+ *	break bindings
+ *
+ *	NOTE: 1003.1g draft 6.3 is broken with respect to AX.25/NetROM and
+ *	other SEQPACKET protocols that take time to connect() as it doesn't
+ *	include the -EINPROGRESS status for such sockets.
+ */
+
+SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr,
+		int, addrlen)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+	err = move_addr_to_kernel(uservaddr, addrlen, (struct sockaddr *)&address);
+	if (err < 0)
+		goto out_put;
+
+	err =
+	    security_socket_connect(sock, (struct sockaddr *)&address, addrlen);
+	if (err)
+		goto out_put;
+
+	err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen,
+				 sock->file->f_flags);
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Get the local address ('name') of a socket object. Move the obtained
+ *	name to user space.
+ */
+
+SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
+		int __user *, usockaddr_len)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int len, err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	err = security_socket_getsockname(sock);
+	if (err)
+		goto out_put;
+
+	err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0);
+	if (err)
+		goto out_put;
+	err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, usockaddr_len);
+
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Get the remote address ('name') of a socket object. Move the obtained
+ *	name to user space.
+ */
+
+SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr,
+		int __user *, usockaddr_len)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int len, err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_getpeername(sock);
+		if (err) {
+			fput_light(sock->file, fput_needed);
+			return err;
+		}
+
+		err =
+		    sock->ops->getname(sock, (struct sockaddr *)&address, &len,
+				       1);
+		if (!err)
+			err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr,
+						usockaddr_len);
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Send a datagram to a given address. We move the address into kernel
+ *	space and check the user space data area is readable before invoking
+ *	the protocol.
+ */
+
+SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len,
+		unsigned, flags, struct sockaddr __user *, addr,
+		int, addr_len)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int err;
+	struct msghdr msg;
+	struct iovec iov;
+	int fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	iov.iov_base = buff;
+	iov.iov_len = len;
+	msg.msg_name = NULL;
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_namelen = 0;
+	if (addr) {
+		err = move_addr_to_kernel(addr, addr_len, (struct sockaddr *)&address);
+		if (err < 0)
+			goto out_put;
+		msg.msg_name = (struct sockaddr *)&address;
+		msg.msg_namelen = addr_len;
+	}
+	if (sock->file->f_flags & O_NONBLOCK)
+		flags |= MSG_DONTWAIT;
+	msg.msg_flags = flags;
+	err = sock_sendmsg(sock, &msg, len);
+
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Send a datagram down a socket.
+ */
+
+SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len,
+		unsigned, flags)
+{
+	return sys_sendto(fd, buff, len, flags, NULL, 0);
+}
+
+/*
+ *	Receive a frame from the socket and optionally record the address of the
+ *	sender. We verify the buffers are writable and if needed move the
+ *	sender address from kernel to user space.
+ */
+
+SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
+		unsigned, flags, struct sockaddr __user *, addr,
+		int __user *, addr_len)
+{
+	struct socket *sock;
+	struct iovec iov;
+	struct msghdr msg;
+	struct sockaddr_storage address;
+	int err, err2;
+	int fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_iovlen = 1;
+	msg.msg_iov = &iov;
+	iov.iov_len = size;
+	iov.iov_base = ubuf;
+	msg.msg_name = (struct sockaddr *)&address;
+	msg.msg_namelen = sizeof(address);
+	if (sock->file->f_flags & O_NONBLOCK)
+		flags |= MSG_DONTWAIT;
+	err = sock_recvmsg(sock, &msg, size, flags);
+
+	if (err >= 0 && addr != NULL) {
+		err2 = move_addr_to_user((struct sockaddr *)&address,
+					 msg.msg_namelen, addr, addr_len);
+		if (err2 < 0)
+			err = err2;
+	}
+
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Receive a datagram from a socket.
+ */
+
+asmlinkage long sys_recv(int fd, void __user *ubuf, size_t size,
+			 unsigned flags)
+{
+	return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL);
+}
+
+/*
+ *	Set a socket option. Because we don't know the option lengths we have
+ *	to pass the user mode parameter for the protocols to sort out.
+ */
+
+SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
+		char __user *, optval, int, optlen)
+{
+	int err, fput_needed;
+	struct socket *sock;
+
+	if (optlen < 0)
+		return -EINVAL;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_setsockopt(sock, level, optname);
+		if (err)
+			goto out_put;
+
+		if (level == SOL_SOCKET)
+			err =
+			    sock_setsockopt(sock, level, optname, optval,
+					    optlen);
+		else
+			err =
+			    sock->ops->setsockopt(sock, level, optname, optval,
+						  optlen);
+out_put:
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Get a socket option. Because we don't know the option lengths we have
+ *	to pass a user mode parameter for the protocols to sort out.
+ */
+
+SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
+		char __user *, optval, int __user *, optlen)
+{
+	int err, fput_needed;
+	struct socket *sock;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_getsockopt(sock, level, optname);
+		if (err)
+			goto out_put;
+
+		if (level == SOL_SOCKET)
+			err =
+			    sock_getsockopt(sock, level, optname, optval,
+					    optlen);
+		else
+			err =
+			    sock->ops->getsockopt(sock, level, optname, optval,
+						  optlen);
+out_put:
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Shutdown a socket.
+ */
+
+SYSCALL_DEFINE2(shutdown, int, fd, int, how)
+{
+	int err, fput_needed;
+	struct socket *sock;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_shutdown(sock, how);
+		if (!err)
+			err = sock->ops->shutdown(sock, how);
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/* A couple of helpful macros for getting the address of the 32/64 bit
+ * fields which are the same type (int / unsigned) on our platforms.
+ */
+#define COMPAT_MSG(msg, member)	((MSG_CMSG_COMPAT & flags) ? &msg##_compat->member : &msg->member)
+#define COMPAT_NAMELEN(msg)	COMPAT_MSG(msg, msg_namelen)
+#define COMPAT_FLAGS(msg)	COMPAT_MSG(msg, msg_flags)
+
+/*
+ *	BSD sendmsg interface
+ */
+
+SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
+{
+	struct compat_msghdr __user *msg_compat =
+	    (struct compat_msghdr __user *)msg;
+	struct socket *sock;
+	struct sockaddr_storage address;
+	struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
+	unsigned char ctl[sizeof(struct cmsghdr) + 20]
+	    __attribute__ ((aligned(sizeof(__kernel_size_t))));
+	/* 20 is size of ipv6_pktinfo */
+	unsigned char *ctl_buf = ctl;
+	struct msghdr msg_sys;
+	int err, ctl_len, iov_size, total_len;
+	int fput_needed;
+
+	err = -EFAULT;
+	if (MSG_CMSG_COMPAT & flags) {
+		if (get_compat_msghdr(&msg_sys, msg_compat))
+			return -EFAULT;
+	}
+	else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+		return -EFAULT;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	/* do not move before msg_sys is valid */
+	err = -EMSGSIZE;
+	if (msg_sys.msg_iovlen > UIO_MAXIOV)
+		goto out_put;
+
+	/* Check whether to allocate the iovec area */
+	err = -ENOMEM;
+	iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
+	if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+		iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
+		if (!iov)
+			goto out_put;
+	}
+
+	/* This will also move the address data into kernel space */
+	if (MSG_CMSG_COMPAT & flags) {
+		err = verify_compat_iovec(&msg_sys, iov,
+					  (struct sockaddr *)&address,
+					  VERIFY_READ);
+	} else
+		err = verify_iovec(&msg_sys, iov,
+				   (struct sockaddr *)&address,
+				   VERIFY_READ);
+	if (err < 0)
+		goto out_freeiov;
+	total_len = err;
+
+	err = -ENOBUFS;
+
+	if (msg_sys.msg_controllen > INT_MAX)
+		goto out_freeiov;
+	ctl_len = msg_sys.msg_controllen;
+	if ((MSG_CMSG_COMPAT & flags) && ctl_len) {
+		err =
+		    cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl,
+						     sizeof(ctl));
+		if (err)
+			goto out_freeiov;
+		ctl_buf = msg_sys.msg_control;
+		ctl_len = msg_sys.msg_controllen;
+	} else if (ctl_len) {
+		if (ctl_len > sizeof(ctl)) {
+			ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL);
+			if (ctl_buf == NULL)
+				goto out_freeiov;
+		}
+		err = -EFAULT;
+		/*
+		 * Careful! Before this, msg_sys.msg_control contains a user pointer.
+		 * Afterwards, it will be a kernel pointer. Thus the compiler-assisted
+		 * checking falls down on this.
+		 */
+		if (copy_from_user(ctl_buf, (void __user *)msg_sys.msg_control,
+				   ctl_len))
+			goto out_freectl;
+		msg_sys.msg_control = ctl_buf;
+	}
+	msg_sys.msg_flags = flags;
+
+	if (sock->file->f_flags & O_NONBLOCK)
+		msg_sys.msg_flags |= MSG_DONTWAIT;
+	err = sock_sendmsg(sock, &msg_sys, total_len);
+
+out_freectl:
+	if (ctl_buf != ctl)
+		sock_kfree_s(sock->sk, ctl_buf, ctl_len);
+out_freeiov:
+	if (iov != iovstack)
+		sock_kfree_s(sock->sk, iov, iov_size);
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	BSD recvmsg interface
+ */
+
+SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg,
+		unsigned int, flags)
+{
+	struct compat_msghdr __user *msg_compat =
+	    (struct compat_msghdr __user *)msg;
+	struct socket *sock;
+	struct iovec iovstack[UIO_FASTIOV];
+	struct iovec *iov = iovstack;
+	struct msghdr msg_sys;
+	unsigned long cmsg_ptr;
+	int err, iov_size, total_len, len;
+	int fput_needed;
+
+	/* kernel mode address */
+	struct sockaddr_storage addr;
+
+	/* user mode address pointers */
+	struct sockaddr __user *uaddr;
+	int __user *uaddr_len;
+
+	if (MSG_CMSG_COMPAT & flags) {
+		if (get_compat_msghdr(&msg_sys, msg_compat))
+			return -EFAULT;
+	}
+	else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+		return -EFAULT;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	err = -EMSGSIZE;
+	if (msg_sys.msg_iovlen > UIO_MAXIOV)
+		goto out_put;
+
+	/* Check whether to allocate the iovec area */
+	err = -ENOMEM;
+	iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
+	if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+		iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
+		if (!iov)
+			goto out_put;
+	}
+
+	/*
+	 *      Save the user-mode address (verify_iovec will change the
+	 *      kernel msghdr to use the kernel address space)
+	 */
+
+	uaddr = (__force void __user *)msg_sys.msg_name;
+	uaddr_len = COMPAT_NAMELEN(msg);
+	if (MSG_CMSG_COMPAT & flags) {
+		err = verify_compat_iovec(&msg_sys, iov,
+					  (struct sockaddr *)&addr,
+					  VERIFY_WRITE);
+	} else
+		err = verify_iovec(&msg_sys, iov,
+				   (struct sockaddr *)&addr,
+				   VERIFY_WRITE);
+	if (err < 0)
+		goto out_freeiov;
+	total_len = err;
+
+	cmsg_ptr = (unsigned long)msg_sys.msg_control;
+	msg_sys.msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT);
+
+	if (sock->file->f_flags & O_NONBLOCK)
+		flags |= MSG_DONTWAIT;
+	err = sock_recvmsg(sock, &msg_sys, total_len, flags);
+	if (err < 0)
+		goto out_freeiov;
+	len = err;
+
+	if (uaddr != NULL) {
+		err = move_addr_to_user((struct sockaddr *)&addr,
+					msg_sys.msg_namelen, uaddr,
+					uaddr_len);
+		if (err < 0)
+			goto out_freeiov;
+	}
+	err = __put_user((msg_sys.msg_flags & ~MSG_CMSG_COMPAT),
+			 COMPAT_FLAGS(msg));
+	if (err)
+		goto out_freeiov;
+	if (MSG_CMSG_COMPAT & flags)
+		err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
+				 &msg_compat->msg_controllen);
+	else
+		err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
+				 &msg->msg_controllen);
+	if (err)
+		goto out_freeiov;
+	err = len;
+
+out_freeiov:
+	if (iov != iovstack)
+		sock_kfree_s(sock->sk, iov, iov_size);
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+#ifdef __ARCH_WANT_SYS_SOCKETCALL
+
+/* Argument list sizes for sys_socketcall */
+#define AL(x) ((x) * sizeof(unsigned long))
+static const unsigned char nargs[19]={
+	AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
+	AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
+	AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
+	AL(4)
+};
+
+#undef AL
+
+/*
+ *	System call vectors.
+ *
+ *	Argument checking cleaned up. Saved 20% in size.
+ *  This function doesn't need to set the kernel lock because
+ *  it is set by the callees.
+ */
+
+SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
+{
+	unsigned long a[6];
+	unsigned long a0, a1;
+	int err;
+
+	if (call < 1 || call > SYS_ACCEPT4)
+		return -EINVAL;
+
+	/* copy_from_user should be SMP safe. */
+	if (copy_from_user(a, args, nargs[call]))
+		return -EFAULT;
+
+	audit_socketcall(nargs[call] / sizeof(unsigned long), a);
+
+	a0 = a[0];
+	a1 = a[1];
+
+	switch (call) {
+	case SYS_SOCKET:
+		err = sys_socket(a0, a1, a[2]);
+		break;
+	case SYS_BIND:
+		err = sys_bind(a0, (struct sockaddr __user *)a1, a[2]);
+		break;
+	case SYS_CONNECT:
+		err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]);
+		break;
+	case SYS_LISTEN:
+		err = sys_listen(a0, a1);
+		break;
+	case SYS_ACCEPT:
+		err = sys_accept4(a0, (struct sockaddr __user *)a1,
+				  (int __user *)a[2], 0);
+		break;
+	case SYS_GETSOCKNAME:
+		err =
+		    sys_getsockname(a0, (struct sockaddr __user *)a1,
+				    (int __user *)a[2]);
+		break;
+	case SYS_GETPEERNAME:
+		err =
+		    sys_getpeername(a0, (struct sockaddr __user *)a1,
+				    (int __user *)a[2]);
+		break;
+	case SYS_SOCKETPAIR:
+		err = sys_socketpair(a0, a1, a[2], (int __user *)a[3]);
+		break;
+	case SYS_SEND:
+		err = sys_send(a0, (void __user *)a1, a[2], a[3]);
+		break;
+	case SYS_SENDTO:
+		err = sys_sendto(a0, (void __user *)a1, a[2], a[3],
+				 (struct sockaddr __user *)a[4], a[5]);
+		break;
+	case SYS_RECV:
+		err = sys_recv(a0, (void __user *)a1, a[2], a[3]);
+		break;
+	case SYS_RECVFROM:
+		err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3],
+				   (struct sockaddr __user *)a[4],
+				   (int __user *)a[5]);
+		break;
+	case SYS_SHUTDOWN:
+		err = sys_shutdown(a0, a1);
+		break;
+	case SYS_SETSOCKOPT:
+		err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]);
+		break;
+	case SYS_GETSOCKOPT:
+		err =
+		    sys_getsockopt(a0, a1, a[2], (char __user *)a[3],
+				   (int __user *)a[4]);
+		break;
+	case SYS_SENDMSG:
+		err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]);
+		break;
+	case SYS_RECVMSG:
+		err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]);
+		break;
+	case SYS_ACCEPT4:
+		err = sys_accept4(a0, (struct sockaddr __user *)a1,
+				  (int __user *)a[2], a[3]);
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+	return err;
+}
+
+#endif				/* __ARCH_WANT_SYS_SOCKETCALL */
+
+/**
+ *	sock_register - add a socket protocol handler
+ *	@ops: description of protocol
+ *
+ *	This function is called by a protocol handler that wants to
+ *	advertise its address family, and have it linked into the
+ *	socket interface. The value ops->family coresponds to the
+ *	socket system call protocol family.
+ */
+int sock_register(const struct net_proto_family *ops)
+{
+	int err;
+
+	if (ops->family >= NPROTO) {
+		printk(KERN_CRIT "protocol %d >= NPROTO(%d)\n", ops->family,
+		       NPROTO);
+		return -ENOBUFS;
+	}
+
+	spin_lock(&net_family_lock);
+	if (net_families[ops->family])
+		err = -EEXIST;
+	else {
+		net_families[ops->family] = ops;
+		err = 0;
+	}
+	spin_unlock(&net_family_lock);
+
+	printk(KERN_INFO "NET: Registered protocol family %d\n", ops->family);
+	return err;
+}
+
+/**
+ *	sock_unregister - remove a protocol handler
+ *	@family: protocol family to remove
+ *
+ *	This function is called by a protocol handler that wants to
+ *	remove its address family, and have it unlinked from the
+ *	new socket creation.
+ *
+ *	If protocol handler is a module, then it can use module reference
+ *	counts to protect against new references. If protocol handler is not
+ *	a module then it needs to provide its own protection in
+ *	the ops->create routine.
+ */
+void sock_unregister(int family)
+{
+	BUG_ON(family < 0 || family >= NPROTO);
+
+	spin_lock(&net_family_lock);
+	net_families[family] = NULL;
+	spin_unlock(&net_family_lock);
+
+	synchronize_rcu();
+
+	printk(KERN_INFO "NET: Unregistered protocol family %d\n", family);
+}
+
+static int __init sock_init(void)
+{
+	/*
+	 *      Initialize sock SLAB cache.
+	 */
+
+	sk_init();
+
+	/*
+	 *      Initialize skbuff SLAB cache
+	 */
+	skb_init();
+
+	/*
+	 *      Initialize the protocols module.
+	 */
+
+	init_inodecache();
+	register_filesystem(&sock_fs_type);
+	sock_mnt = kern_mount(&sock_fs_type);
+
+	/* The real protocol initialization is performed in later initcalls.
+	 */
+
+#ifdef CONFIG_NETFILTER
+	netfilter_init();
+#endif
+
+	return 0;
+}
+
+core_initcall(sock_init);	/* early initcall */
+
+#ifdef CONFIG_PROC_FS
+void socket_seq_show(struct seq_file *seq)
+{
+	int cpu;
+	int counter = 0;
+
+	for_each_possible_cpu(cpu)
+	    counter += per_cpu(sockets_in_use, cpu);
+
+	/* It can be negative, by the way. 8) */
+	if (counter < 0)
+		counter = 0;
+
+	seq_printf(seq, "sockets: used %d\n", counter);
+}
+#endif				/* CONFIG_PROC_FS */
+
+#ifdef CONFIG_COMPAT
+static long compat_sock_ioctl(struct file *file, unsigned cmd,
+			      unsigned long arg)
+{
+	struct socket *sock = file->private_data;
+	int ret = -ENOIOCTLCMD;
+	struct sock *sk;
+	struct net *net;
+
+	sk = sock->sk;
+	net = sock_net(sk);
+
+	if (sock->ops->compat_ioctl)
+		ret = sock->ops->compat_ioctl(sock, cmd, arg);
+
+	if (ret == -ENOIOCTLCMD &&
+	    (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST))
+		ret = compat_wext_handle_ioctl(net, cmd, arg);
+
+	return ret;
+}
+#endif
+
+int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
+{
+	return sock->ops->bind(sock, addr, addrlen);
+}
+
+int kernel_listen(struct socket *sock, int backlog)
+{
+	return sock->ops->listen(sock, backlog);
+}
+
+int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
+{
+	struct sock *sk = sock->sk;
+	int err;
+
+	err = sock_create_lite(sk->sk_family, sk->sk_type, sk->sk_protocol,
+			       newsock);
+	if (err < 0)
+		goto done;
+
+	err = sock->ops->accept(sock, *newsock, flags);
+	if (err < 0) {
+		sock_release(*newsock);
+		*newsock = NULL;
+		goto done;
+	}
+
+	(*newsock)->ops = sock->ops;
+	__module_get((*newsock)->ops->owner);
+
+done:
+	return err;
+}
+
+int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
+		   int flags)
+{
+	return sock->ops->connect(sock, addr, addrlen, flags);
+}
+
+int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
+			 int *addrlen)
+{
+	return sock->ops->getname(sock, addr, addrlen, 0);
+}
+
+int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
+			 int *addrlen)
+{
+	return sock->ops->getname(sock, addr, addrlen, 1);
+}
+
+int kernel_getsockopt(struct socket *sock, int level, int optname,
+			char *optval, int *optlen)
+{
+	mm_segment_t oldfs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	if (level == SOL_SOCKET)
+		err = sock_getsockopt(sock, level, optname, optval, optlen);
+	else
+		err = sock->ops->getsockopt(sock, level, optname, optval,
+					    optlen);
+	set_fs(oldfs);
+	return err;
+}
+
+int kernel_setsockopt(struct socket *sock, int level, int optname,
+			char *optval, int optlen)
+{
+	mm_segment_t oldfs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	if (level == SOL_SOCKET)
+		err = sock_setsockopt(sock, level, optname, optval, optlen);
+	else
+		err = sock->ops->setsockopt(sock, level, optname, optval,
+					    optlen);
+	set_fs(oldfs);
+	return err;
+}
+
+int kernel_sendpage(struct socket *sock, struct page *page, int offset,
+		    size_t size, int flags)
+{
+	if (sock->ops->sendpage)
+		return sock->ops->sendpage(sock, page, offset, size, flags);
+
+	return sock_no_sendpage(sock, page, offset, size, flags);
+}
+
+int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)
+{
+	mm_segment_t oldfs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	err = sock->ops->ioctl(sock, cmd, arg);
+	set_fs(oldfs);
+
+	return err;
+}
+
+int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how)
+{
+	return sock->ops->shutdown(sock, how);
+}
+
+EXPORT_SYMBOL(sock_create);
+EXPORT_SYMBOL(sock_create_kern);
+EXPORT_SYMBOL(sock_create_lite);
+EXPORT_SYMBOL(sock_map_fd);
+EXPORT_SYMBOL(sock_recvmsg);
+EXPORT_SYMBOL(sock_register);
+EXPORT_SYMBOL(sock_release);
+EXPORT_SYMBOL(sock_sendmsg);
+EXPORT_SYMBOL(sock_unregister);
+EXPORT_SYMBOL(sock_wake_async);
+EXPORT_SYMBOL(sockfd_lookup);
+EXPORT_SYMBOL(kernel_sendmsg);
+EXPORT_SYMBOL(kernel_recvmsg);
+EXPORT_SYMBOL(kernel_bind);
+EXPORT_SYMBOL(kernel_listen);
+EXPORT_SYMBOL(kernel_accept);
+EXPORT_SYMBOL(kernel_connect);
+EXPORT_SYMBOL(kernel_getsockname);
+EXPORT_SYMBOL(kernel_getpeername);
+EXPORT_SYMBOL(kernel_getsockopt);
+EXPORT_SYMBOL(kernel_setsockopt);
+EXPORT_SYMBOL(kernel_sendpage);
+EXPORT_SYMBOL(kernel_sock_ioctl);
+EXPORT_SYMBOL(kernel_sock_shutdown);
diff --git a/libdde_linux26/contrib/net/core/.svn/all-wcprops b/libdde_linux26/contrib/net/core/.svn/all-wcprops
new file mode 100644
index 00000000..0b670d94
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/all-wcprops
@@ -0,0 +1,77 @@
+K 25
+svn:wc:ra_dav:version-url
+V 67
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core
+END
+dev.c
+K 25
+svn:wc:ra_dav:version-url
+V 73
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/dev.c
+END
+ethtool.c
+K 25
+svn:wc:ra_dav:version-url
+V 77
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/ethtool.c
+END
+sock.c
+K 25
+svn:wc:ra_dav:version-url
+V 74
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/sock.c
+END
+net-sysfs.h
+K 25
+svn:wc:ra_dav:version-url
+V 79
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/net-sysfs.h
+END
+neighbour.c
+K 25
+svn:wc:ra_dav:version-url
+V 79
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/neighbour.c
+END
+dev_mcast.c
+K 25
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+V 79
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/dev_mcast.c
+END
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+END
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+V 78
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+END
+rtnetlink.c
+K 25
+svn:wc:ra_dav:version-url
+V 79
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/rtnetlink.c
+END
+net-sysfs.c
+K 25
+svn:wc:ra_dav:version-url
+V 79
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/net-sysfs.c
+END
+kmap_skb.h
+K 25
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+V 78
+/repos/tudos/!svn/ver/188/trunk/l4/pkg/dde/linux26/contrib/net/core/kmap_skb.h
+END
+skb_dma_map.c
+K 25
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+V 81
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/core/skb_dma_map.c
+END
diff --git a/libdde_linux26/contrib/net/core/.svn/entries b/libdde_linux26/contrib/net/core/.svn/entries
new file mode 100644
index 00000000..963fd146
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/entries
@@ -0,0 +1,436 @@
+9
+
+dir
+465
+http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/contrib/net/core
+http://svn.tudos.org/repos/tudos
+
+
+
+2009-05-20T14:32:55.606606Z
+455
+l4check
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+svn:special svn:externals svn:needs-lock
+
+
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+
+
+
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+
+
+
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+a704ac0b-3a55-4d43-a2a9-7be6f07c34fb
+
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+file
+
+
+
+
+2009-11-15T17:16:35.000000Z
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+file
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+
+rtnetlink.c
+file
+
+
+
+
+2009-11-15T17:16:35.000000Z
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+455
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+
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+2009-11-15T17:16:35.000000Z
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+
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+
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+
+
+
+
+
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+
+
+
+
+
+14072
+
+kmap_skb.h
+file
+
+
+
+
+2009-11-15T17:16:35.000000Z
+dd4f4f93c1ab135f2d31314d41b1c373
+2007-09-13T02:53:43.697541Z
+188
+l4check
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+360
+
+skb_dma_map.c
+file
+
+
+
+
+2009-11-15T17:16:35.000000Z
+dd4a1adb13e56cb4ecf75c1f4b7d6aa9
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+1468
+
diff --git a/libdde_linux26/contrib/net/core/.svn/format b/libdde_linux26/contrib/net/core/.svn/format
new file mode 100644
index 00000000..ec635144
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/format
@@ -0,0 +1 @@
+9
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/dev.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/dev.c.svn-base
new file mode 100644
index 00000000..e3fe5c70
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/dev.c.svn-base
@@ -0,0 +1,5277 @@
+/*
+ * 	NET3	Protocol independent device support routines.
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *	Derived from the non IP parts of dev.c 1.0.19
+ * 		Authors:	Ross Biro
+ *				Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *				Mark Evans, <evansmp@uhura.aston.ac.uk>
+ *
+ *	Additional Authors:
+ *		Florian la Roche <rzsfl@rz.uni-sb.de>
+ *		Alan Cox <gw4pts@gw4pts.ampr.org>
+ *		David Hinds <dahinds@users.sourceforge.net>
+ *		Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
+ *		Adam Sulmicki <adam@cfar.umd.edu>
+ *              Pekka Riikonen <priikone@poesidon.pspt.fi>
+ *
+ *	Changes:
+ *              D.J. Barrow     :       Fixed bug where dev->refcnt gets set
+ *              			to 2 if register_netdev gets called
+ *              			before net_dev_init & also removed a
+ *              			few lines of code in the process.
+ *		Alan Cox	:	device private ioctl copies fields back.
+ *		Alan Cox	:	Transmit queue code does relevant
+ *					stunts to keep the queue safe.
+ *		Alan Cox	:	Fixed double lock.
+ *		Alan Cox	:	Fixed promisc NULL pointer trap
+ *		????????	:	Support the full private ioctl range
+ *		Alan Cox	:	Moved ioctl permission check into
+ *					drivers
+ *		Tim Kordas	:	SIOCADDMULTI/SIOCDELMULTI
+ *		Alan Cox	:	100 backlog just doesn't cut it when
+ *					you start doing multicast video 8)
+ *		Alan Cox	:	Rewrote net_bh and list manager.
+ *		Alan Cox	: 	Fix ETH_P_ALL echoback lengths.
+ *		Alan Cox	:	Took out transmit every packet pass
+ *					Saved a few bytes in the ioctl handler
+ *		Alan Cox	:	Network driver sets packet type before
+ *					calling netif_rx. Saves a function
+ *					call a packet.
+ *		Alan Cox	:	Hashed net_bh()
+ *		Richard Kooijman:	Timestamp fixes.
+ *		Alan Cox	:	Wrong field in SIOCGIFDSTADDR
+ *		Alan Cox	:	Device lock protection.
+ *		Alan Cox	: 	Fixed nasty side effect of device close
+ *					changes.
+ *		Rudi Cilibrasi	:	Pass the right thing to
+ *					set_mac_address()
+ *		Dave Miller	:	32bit quantity for the device lock to
+ *					make it work out on a Sparc.
+ *		Bjorn Ekwall	:	Added KERNELD hack.
+ *		Alan Cox	:	Cleaned up the backlog initialise.
+ *		Craig Metz	:	SIOCGIFCONF fix if space for under
+ *					1 device.
+ *	    Thomas Bogendoerfer :	Return ENODEV for dev_open, if there
+ *					is no device open function.
+ *		Andi Kleen	:	Fix error reporting for SIOCGIFCONF
+ *	    Michael Chastain	:	Fix signed/unsigned for SIOCGIFCONF
+ *		Cyrus Durgin	:	Cleaned for KMOD
+ *		Adam Sulmicki   :	Bug Fix : Network Device Unload
+ *					A network device unload needs to purge
+ *					the backlog queue.
+ *	Paul Rusty Russell	:	SIOCSIFNAME
+ *              Pekka Riikonen  :	Netdev boot-time settings code
+ *              Andrew Morton   :       Make unregister_netdevice wait
+ *              			indefinitely on dev->refcnt
+ * 		J Hadi Salim	:	- Backlog queue sampling
+ *				        - netif_rx() feedback
+ */
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <linux/bitops.h>
+#include <linux/capability.h>
+#include <linux/cpu.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mutex.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/notifier.h>
+#include <linux/skbuff.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <linux/rtnetlink.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/if_bridge.h>
+#include <linux/if_macvlan.h>
+#include <net/dst.h>
+#include <net/pkt_sched.h>
+#include <net/checksum.h>
+#include <linux/highmem.h>
+#include <linux/init.h>
+#include <linux/kmod.h>
+#include <linux/module.h>
+#include <linux/netpoll.h>
+#include <linux/rcupdate.h>
+#include <linux/delay.h>
+#include <net/wext.h>
+#include <net/iw_handler.h>
+#include <asm/current.h>
+#include <linux/audit.h>
+#include <linux/dmaengine.h>
+#include <linux/err.h>
+#include <linux/ctype.h>
+#include <linux/if_arp.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <net/ip.h>
+#include <linux/ipv6.h>
+#include <linux/in.h>
+#include <linux/jhash.h>
+#include <linux/random.h>
+
+#include "net-sysfs.h"
+
+/* Instead of increasing this, you should create a hash table. */
+#define MAX_GRO_SKBS 8
+
+/* This should be increased if a protocol with a bigger head is added. */
+#define GRO_MAX_HEAD (MAX_HEADER + 128)
+
+/*
+ *	The list of packet types we will receive (as opposed to discard)
+ *	and the routines to invoke.
+ *
+ *	Why 16. Because with 16 the only overlap we get on a hash of the
+ *	low nibble of the protocol value is RARP/SNAP/X.25.
+ *
+ *      NOTE:  That is no longer true with the addition of VLAN tags.  Not
+ *             sure which should go first, but I bet it won't make much
+ *             difference if we are running VLANs.  The good news is that
+ *             this protocol won't be in the list unless compiled in, so
+ *             the average user (w/out VLANs) will not be adversely affected.
+ *             --BLG
+ *
+ *		0800	IP
+ *		8100    802.1Q VLAN
+ *		0001	802.3
+ *		0002	AX.25
+ *		0004	802.2
+ *		8035	RARP
+ *		0005	SNAP
+ *		0805	X.25
+ *		0806	ARP
+ *		8137	IPX
+ *		0009	Localtalk
+ *		86DD	IPv6
+ */
+
+#define PTYPE_HASH_SIZE	(16)
+#define PTYPE_HASH_MASK	(PTYPE_HASH_SIZE - 1)
+
+static DEFINE_SPINLOCK(ptype_lock);
+static struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
+static struct list_head ptype_all __read_mostly;	/* Taps */
+
+/*
+ * The @dev_base_head list is protected by @dev_base_lock and the rtnl
+ * semaphore.
+ *
+ * Pure readers hold dev_base_lock for reading.
+ *
+ * Writers must hold the rtnl semaphore while they loop through the
+ * dev_base_head list, and hold dev_base_lock for writing when they do the
+ * actual updates.  This allows pure readers to access the list even
+ * while a writer is preparing to update it.
+ *
+ * To put it another way, dev_base_lock is held for writing only to
+ * protect against pure readers; the rtnl semaphore provides the
+ * protection against other writers.
+ *
+ * See, for example usages, register_netdevice() and
+ * unregister_netdevice(), which must be called with the rtnl
+ * semaphore held.
+ */
+DEFINE_RWLOCK(dev_base_lock);
+
+EXPORT_SYMBOL(dev_base_lock);
+
+#define NETDEV_HASHBITS	8
+#define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS)
+
+static inline struct hlist_head *dev_name_hash(struct net *net, const char *name)
+{
+	unsigned hash = full_name_hash(name, strnlen(name, IFNAMSIZ));
+	return &net->dev_name_head[hash & ((1 << NETDEV_HASHBITS) - 1)];
+}
+
+static inline struct hlist_head *dev_index_hash(struct net *net, int ifindex)
+{
+	return &net->dev_index_head[ifindex & ((1 << NETDEV_HASHBITS) - 1)];
+}
+
+/* Device list insertion */
+static int list_netdevice(struct net_device *dev)
+{
+	struct net *net = dev_net(dev);
+
+	ASSERT_RTNL();
+
+	write_lock_bh(&dev_base_lock);
+	list_add_tail(&dev->dev_list, &net->dev_base_head);
+	hlist_add_head(&dev->name_hlist, dev_name_hash(net, dev->name));
+	hlist_add_head(&dev->index_hlist, dev_index_hash(net, dev->ifindex));
+	write_unlock_bh(&dev_base_lock);
+	return 0;
+}
+
+/* Device list removal */
+static void unlist_netdevice(struct net_device *dev)
+{
+	ASSERT_RTNL();
+
+	/* Unlink dev from the device chain */
+	write_lock_bh(&dev_base_lock);
+	list_del(&dev->dev_list);
+	hlist_del(&dev->name_hlist);
+	hlist_del(&dev->index_hlist);
+	write_unlock_bh(&dev_base_lock);
+}
+
+/*
+ *	Our notifier list
+ */
+
+static RAW_NOTIFIER_HEAD(netdev_chain);
+
+/*
+ *	Device drivers call our routines to queue packets here. We empty the
+ *	queue in the local softnet handler.
+ */
+
+DEFINE_PER_CPU(struct softnet_data, softnet_data);
+
+#ifdef CONFIG_LOCKDEP
+/*
+ * register_netdevice() inits txq->_xmit_lock and sets lockdep class
+ * according to dev->type
+ */
+static const unsigned short netdev_lock_type[] =
+	{ARPHRD_NETROM, ARPHRD_ETHER, ARPHRD_EETHER, ARPHRD_AX25,
+	 ARPHRD_PRONET, ARPHRD_CHAOS, ARPHRD_IEEE802, ARPHRD_ARCNET,
+	 ARPHRD_APPLETLK, ARPHRD_DLCI, ARPHRD_ATM, ARPHRD_METRICOM,
+	 ARPHRD_IEEE1394, ARPHRD_EUI64, ARPHRD_INFINIBAND, ARPHRD_SLIP,
+	 ARPHRD_CSLIP, ARPHRD_SLIP6, ARPHRD_CSLIP6, ARPHRD_RSRVD,
+	 ARPHRD_ADAPT, ARPHRD_ROSE, ARPHRD_X25, ARPHRD_HWX25,
+	 ARPHRD_PPP, ARPHRD_CISCO, ARPHRD_LAPB, ARPHRD_DDCMP,
+	 ARPHRD_RAWHDLC, ARPHRD_TUNNEL, ARPHRD_TUNNEL6, ARPHRD_FRAD,
+	 ARPHRD_SKIP, ARPHRD_LOOPBACK, ARPHRD_LOCALTLK, ARPHRD_FDDI,
+	 ARPHRD_BIF, ARPHRD_SIT, ARPHRD_IPDDP, ARPHRD_IPGRE,
+	 ARPHRD_PIMREG, ARPHRD_HIPPI, ARPHRD_ASH, ARPHRD_ECONET,
+	 ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
+	 ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211,
+	 ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET,
+	 ARPHRD_PHONET_PIPE, ARPHRD_VOID, ARPHRD_NONE};
+
+static const char *netdev_lock_name[] =
+	{"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25",
+	 "_xmit_PRONET", "_xmit_CHAOS", "_xmit_IEEE802", "_xmit_ARCNET",
+	 "_xmit_APPLETLK", "_xmit_DLCI", "_xmit_ATM", "_xmit_METRICOM",
+	 "_xmit_IEEE1394", "_xmit_EUI64", "_xmit_INFINIBAND", "_xmit_SLIP",
+	 "_xmit_CSLIP", "_xmit_SLIP6", "_xmit_CSLIP6", "_xmit_RSRVD",
+	 "_xmit_ADAPT", "_xmit_ROSE", "_xmit_X25", "_xmit_HWX25",
+	 "_xmit_PPP", "_xmit_CISCO", "_xmit_LAPB", "_xmit_DDCMP",
+	 "_xmit_RAWHDLC", "_xmit_TUNNEL", "_xmit_TUNNEL6", "_xmit_FRAD",
+	 "_xmit_SKIP", "_xmit_LOOPBACK", "_xmit_LOCALTLK", "_xmit_FDDI",
+	 "_xmit_BIF", "_xmit_SIT", "_xmit_IPDDP", "_xmit_IPGRE",
+	 "_xmit_PIMREG", "_xmit_HIPPI", "_xmit_ASH", "_xmit_ECONET",
+	 "_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
+	 "_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211",
+	 "_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET",
+	 "_xmit_PHONET_PIPE", "_xmit_VOID", "_xmit_NONE"};
+
+static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
+static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)];
+
+static inline unsigned short netdev_lock_pos(unsigned short dev_type)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(netdev_lock_type); i++)
+		if (netdev_lock_type[i] == dev_type)
+			return i;
+	/* the last key is used by default */
+	return ARRAY_SIZE(netdev_lock_type) - 1;
+}
+
+static inline void netdev_set_xmit_lockdep_class(spinlock_t *lock,
+						 unsigned short dev_type)
+{
+	int i;
+
+	i = netdev_lock_pos(dev_type);
+	lockdep_set_class_and_name(lock, &netdev_xmit_lock_key[i],
+				   netdev_lock_name[i]);
+}
+
+static inline void netdev_set_addr_lockdep_class(struct net_device *dev)
+{
+	int i;
+
+	i = netdev_lock_pos(dev->type);
+	lockdep_set_class_and_name(&dev->addr_list_lock,
+				   &netdev_addr_lock_key[i],
+				   netdev_lock_name[i]);
+}
+#else
+static inline void netdev_set_xmit_lockdep_class(spinlock_t *lock,
+						 unsigned short dev_type)
+{
+}
+static inline void netdev_set_addr_lockdep_class(struct net_device *dev)
+{
+}
+#endif
+
+/*******************************************************************************
+
+		Protocol management and registration routines
+
+*******************************************************************************/
+
+/*
+ *	Add a protocol ID to the list. Now that the input handler is
+ *	smarter we can dispense with all the messy stuff that used to be
+ *	here.
+ *
+ *	BEWARE!!! Protocol handlers, mangling input packets,
+ *	MUST BE last in hash buckets and checking protocol handlers
+ *	MUST start from promiscuous ptype_all chain in net_bh.
+ *	It is true now, do not change it.
+ *	Explanation follows: if protocol handler, mangling packet, will
+ *	be the first on list, it is not able to sense, that packet
+ *	is cloned and should be copied-on-write, so that it will
+ *	change it and subsequent readers will get broken packet.
+ *							--ANK (980803)
+ */
+
+/**
+ *	dev_add_pack - add packet handler
+ *	@pt: packet type declaration
+ *
+ *	Add a protocol handler to the networking stack. The passed &packet_type
+ *	is linked into kernel lists and may not be freed until it has been
+ *	removed from the kernel lists.
+ *
+ *	This call does not sleep therefore it can not
+ *	guarantee all CPU's that are in middle of receiving packets
+ *	will see the new packet type (until the next received packet).
+ */
+
+void dev_add_pack(struct packet_type *pt)
+{
+	int hash;
+
+	spin_lock_bh(&ptype_lock);
+	if (pt->type == htons(ETH_P_ALL))
+		list_add_rcu(&pt->list, &ptype_all);
+	else {
+		hash = ntohs(pt->type) & PTYPE_HASH_MASK;
+		list_add_rcu(&pt->list, &ptype_base[hash]);
+	}
+	spin_unlock_bh(&ptype_lock);
+}
+
+/**
+ *	__dev_remove_pack	 - remove packet handler
+ *	@pt: packet type declaration
+ *
+ *	Remove a protocol handler that was previously added to the kernel
+ *	protocol handlers by dev_add_pack(). The passed &packet_type is removed
+ *	from the kernel lists and can be freed or reused once this function
+ *	returns.
+ *
+ *      The packet type might still be in use by receivers
+ *	and must not be freed until after all the CPU's have gone
+ *	through a quiescent state.
+ */
+void __dev_remove_pack(struct packet_type *pt)
+{
+	struct list_head *head;
+	struct packet_type *pt1;
+
+	spin_lock_bh(&ptype_lock);
+
+	if (pt->type == htons(ETH_P_ALL))
+		head = &ptype_all;
+	else
+		head = &ptype_base[ntohs(pt->type) & PTYPE_HASH_MASK];
+
+	list_for_each_entry(pt1, head, list) {
+		if (pt == pt1) {
+			list_del_rcu(&pt->list);
+			goto out;
+		}
+	}
+
+	printk(KERN_WARNING "dev_remove_pack: %p not found.\n", pt);
+out:
+	spin_unlock_bh(&ptype_lock);
+}
+/**
+ *	dev_remove_pack	 - remove packet handler
+ *	@pt: packet type declaration
+ *
+ *	Remove a protocol handler that was previously added to the kernel
+ *	protocol handlers by dev_add_pack(). The passed &packet_type is removed
+ *	from the kernel lists and can be freed or reused once this function
+ *	returns.
+ *
+ *	This call sleeps to guarantee that no CPU is looking at the packet
+ *	type after return.
+ */
+void dev_remove_pack(struct packet_type *pt)
+{
+	__dev_remove_pack(pt);
+
+	synchronize_net();
+}
+
+/******************************************************************************
+
+		      Device Boot-time Settings Routines
+
+*******************************************************************************/
+
+/* Boot time configuration table */
+static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
+
+/**
+ *	netdev_boot_setup_add	- add new setup entry
+ *	@name: name of the device
+ *	@map: configured settings for the device
+ *
+ *	Adds new setup entry to the dev_boot_setup list.  The function
+ *	returns 0 on error and 1 on success.  This is a generic routine to
+ *	all netdevices.
+ */
+static int netdev_boot_setup_add(char *name, struct ifmap *map)
+{
+	struct netdev_boot_setup *s;
+	int i;
+
+	s = dev_boot_setup;
+	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
+		if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
+			memset(s[i].name, 0, sizeof(s[i].name));
+			strlcpy(s[i].name, name, IFNAMSIZ);
+			memcpy(&s[i].map, map, sizeof(s[i].map));
+			break;
+		}
+	}
+
+	return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
+}
+
+/**
+ *	netdev_boot_setup_check	- check boot time settings
+ *	@dev: the netdevice
+ *
+ * 	Check boot time settings for the device.
+ *	The found settings are set for the device to be used
+ *	later in the device probing.
+ *	Returns 0 if no settings found, 1 if they are.
+ */
+int netdev_boot_setup_check(struct net_device *dev)
+{
+	struct netdev_boot_setup *s = dev_boot_setup;
+	int i;
+
+	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
+		if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
+		    !strcmp(dev->name, s[i].name)) {
+			dev->irq 	= s[i].map.irq;
+			dev->base_addr 	= s[i].map.base_addr;
+			dev->mem_start 	= s[i].map.mem_start;
+			dev->mem_end 	= s[i].map.mem_end;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+
+/**
+ *	netdev_boot_base	- get address from boot time settings
+ *	@prefix: prefix for network device
+ *	@unit: id for network device
+ *
+ * 	Check boot time settings for the base address of device.
+ *	The found settings are set for the device to be used
+ *	later in the device probing.
+ *	Returns 0 if no settings found.
+ */
+unsigned long netdev_boot_base(const char *prefix, int unit)
+{
+	const struct netdev_boot_setup *s = dev_boot_setup;
+	char name[IFNAMSIZ];
+	int i;
+
+	sprintf(name, "%s%d", prefix, unit);
+
+	/*
+	 * If device already registered then return base of 1
+	 * to indicate not to probe for this interface
+	 */
+	if (__dev_get_by_name(&init_net, name))
+		return 1;
+
+	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++)
+		if (!strcmp(name, s[i].name))
+			return s[i].map.base_addr;
+	return 0;
+}
+
+/*
+ * Saves at boot time configured settings for any netdevice.
+ */
+int __init netdev_boot_setup(char *str)
+{
+	int ints[5];
+	struct ifmap map;
+
+	str = get_options(str, ARRAY_SIZE(ints), ints);
+	if (!str || !*str)
+		return 0;
+
+	/* Save settings */
+	memset(&map, 0, sizeof(map));
+	if (ints[0] > 0)
+		map.irq = ints[1];
+	if (ints[0] > 1)
+		map.base_addr = ints[2];
+	if (ints[0] > 2)
+		map.mem_start = ints[3];
+	if (ints[0] > 3)
+		map.mem_end = ints[4];
+
+	/* Add new entry to the list */
+	return netdev_boot_setup_add(str, &map);
+}
+
+__setup("netdev=", netdev_boot_setup);
+
+/*******************************************************************************
+
+			    Device Interface Subroutines
+
+*******************************************************************************/
+
+/**
+ *	__dev_get_by_name	- find a device by its name
+ *	@net: the applicable net namespace
+ *	@name: name to find
+ *
+ *	Find an interface by name. Must be called under RTNL semaphore
+ *	or @dev_base_lock. If the name is found a pointer to the device
+ *	is returned. If the name is not found then %NULL is returned. The
+ *	reference counters are not incremented so the caller must be
+ *	careful with locks.
+ */
+
+struct net_device *__dev_get_by_name(struct net *net, const char *name)
+{
+	struct hlist_node *p;
+
+	hlist_for_each(p, dev_name_hash(net, name)) {
+		struct net_device *dev
+			= hlist_entry(p, struct net_device, name_hlist);
+		if (!strncmp(dev->name, name, IFNAMSIZ))
+			return dev;
+	}
+	return NULL;
+}
+
+/**
+ *	dev_get_by_name		- find a device by its name
+ *	@net: the applicable net namespace
+ *	@name: name to find
+ *
+ *	Find an interface by name. This can be called from any
+ *	context and does its own locking. The returned handle has
+ *	the usage count incremented and the caller must use dev_put() to
+ *	release it when it is no longer needed. %NULL is returned if no
+ *	matching device is found.
+ */
+
+struct net_device *dev_get_by_name(struct net *net, const char *name)
+{
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_name(net, name);
+	if (dev)
+		dev_hold(dev);
+	read_unlock(&dev_base_lock);
+	return dev;
+}
+
+/**
+ *	__dev_get_by_index - find a device by its ifindex
+ *	@net: the applicable net namespace
+ *	@ifindex: index of device
+ *
+ *	Search for an interface by index. Returns %NULL if the device
+ *	is not found or a pointer to the device. The device has not
+ *	had its reference counter increased so the caller must be careful
+ *	about locking. The caller must hold either the RTNL semaphore
+ *	or @dev_base_lock.
+ */
+
+struct net_device *__dev_get_by_index(struct net *net, int ifindex)
+{
+	struct hlist_node *p;
+
+	hlist_for_each(p, dev_index_hash(net, ifindex)) {
+		struct net_device *dev
+			= hlist_entry(p, struct net_device, index_hlist);
+		if (dev->ifindex == ifindex)
+			return dev;
+	}
+	return NULL;
+}
+
+
+/**
+ *	dev_get_by_index - find a device by its ifindex
+ *	@net: the applicable net namespace
+ *	@ifindex: index of device
+ *
+ *	Search for an interface by index. Returns NULL if the device
+ *	is not found or a pointer to the device. The device returned has
+ *	had a reference added and the pointer is safe until the user calls
+ *	dev_put to indicate they have finished with it.
+ */
+
+struct net_device *dev_get_by_index(struct net *net, int ifindex)
+{
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_index(net, ifindex);
+	if (dev)
+		dev_hold(dev);
+	read_unlock(&dev_base_lock);
+	return dev;
+}
+
+/**
+ *	dev_getbyhwaddr - find a device by its hardware address
+ *	@net: the applicable net namespace
+ *	@type: media type of device
+ *	@ha: hardware address
+ *
+ *	Search for an interface by MAC address. Returns NULL if the device
+ *	is not found or a pointer to the device. The caller must hold the
+ *	rtnl semaphore. The returned device has not had its ref count increased
+ *	and the caller must therefore be careful about locking
+ *
+ *	BUGS:
+ *	If the API was consistent this would be __dev_get_by_hwaddr
+ */
+
+struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *ha)
+{
+	struct net_device *dev;
+
+	ASSERT_RTNL();
+
+	for_each_netdev(net, dev)
+		if (dev->type == type &&
+		    !memcmp(dev->dev_addr, ha, dev->addr_len))
+			return dev;
+
+	return NULL;
+}
+
+EXPORT_SYMBOL(dev_getbyhwaddr);
+
+struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type)
+{
+	struct net_device *dev;
+
+	ASSERT_RTNL();
+	for_each_netdev(net, dev)
+		if (dev->type == type)
+			return dev;
+
+	return NULL;
+}
+
+EXPORT_SYMBOL(__dev_getfirstbyhwtype);
+
+struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type)
+{
+	struct net_device *dev;
+
+	rtnl_lock();
+	dev = __dev_getfirstbyhwtype(net, type);
+	if (dev)
+		dev_hold(dev);
+	rtnl_unlock();
+	return dev;
+}
+
+EXPORT_SYMBOL(dev_getfirstbyhwtype);
+
+/**
+ *	dev_get_by_flags - find any device with given flags
+ *	@net: the applicable net namespace
+ *	@if_flags: IFF_* values
+ *	@mask: bitmask of bits in if_flags to check
+ *
+ *	Search for any interface with the given flags. Returns NULL if a device
+ *	is not found or a pointer to the device. The device returned has
+ *	had a reference added and the pointer is safe until the user calls
+ *	dev_put to indicate they have finished with it.
+ */
+
+struct net_device * dev_get_by_flags(struct net *net, unsigned short if_flags, unsigned short mask)
+{
+	struct net_device *dev, *ret;
+
+	ret = NULL;
+	read_lock(&dev_base_lock);
+	for_each_netdev(net, dev) {
+		if (((dev->flags ^ if_flags) & mask) == 0) {
+			dev_hold(dev);
+			ret = dev;
+			break;
+		}
+	}
+	read_unlock(&dev_base_lock);
+	return ret;
+}
+
+/**
+ *	dev_valid_name - check if name is okay for network device
+ *	@name: name string
+ *
+ *	Network device names need to be valid file names to
+ *	to allow sysfs to work.  We also disallow any kind of
+ *	whitespace.
+ */
+int dev_valid_name(const char *name)
+{
+	if (*name == '\0')
+		return 0;
+	if (strlen(name) >= IFNAMSIZ)
+		return 0;
+	if (!strcmp(name, ".") || !strcmp(name, ".."))
+		return 0;
+
+	while (*name) {
+		if (*name == '/' || isspace(*name))
+			return 0;
+		name++;
+	}
+	return 1;
+}
+
+/**
+ *	__dev_alloc_name - allocate a name for a device
+ *	@net: network namespace to allocate the device name in
+ *	@name: name format string
+ *	@buf:  scratch buffer and result name string
+ *
+ *	Passed a format string - eg "lt%d" it will try and find a suitable
+ *	id. It scans list of devices to build up a free map, then chooses
+ *	the first empty slot. The caller must hold the dev_base or rtnl lock
+ *	while allocating the name and adding the device in order to avoid
+ *	duplicates.
+ *	Limited to bits_per_byte * page size devices (ie 32K on most platforms).
+ *	Returns the number of the unit assigned or a negative errno code.
+ */
+
+static int __dev_alloc_name(struct net *net, const char *name, char *buf)
+{
+	int i = 0;
+	const char *p;
+	const int max_netdevices = 8*PAGE_SIZE;
+	unsigned long *inuse;
+	struct net_device *d;
+
+	p = strnchr(name, IFNAMSIZ-1, '%');
+	if (p) {
+		/*
+		 * Verify the string as this thing may have come from
+		 * the user.  There must be either one "%d" and no other "%"
+		 * characters.
+		 */
+		if (p[1] != 'd' || strchr(p + 2, '%'))
+			return -EINVAL;
+
+		/* Use one page as a bit array of possible slots */
+		inuse = (unsigned long *) get_zeroed_page(GFP_ATOMIC);
+		if (!inuse)
+			return -ENOMEM;
+
+		for_each_netdev(net, d) {
+			if (!sscanf(d->name, name, &i))
+				continue;
+			if (i < 0 || i >= max_netdevices)
+				continue;
+
+			/*  avoid cases where sscanf is not exact inverse of printf */
+			snprintf(buf, IFNAMSIZ, name, i);
+			if (!strncmp(buf, d->name, IFNAMSIZ))
+				set_bit(i, inuse);
+		}
+
+		i = find_first_zero_bit(inuse, max_netdevices);
+		free_page((unsigned long) inuse);
+	}
+
+	snprintf(buf, IFNAMSIZ, name, i);
+	if (!__dev_get_by_name(net, buf))
+		return i;
+
+	/* It is possible to run out of possible slots
+	 * when the name is long and there isn't enough space left
+	 * for the digits, or if all bits are used.
+	 */
+	return -ENFILE;
+}
+
+/**
+ *	dev_alloc_name - allocate a name for a device
+ *	@dev: device
+ *	@name: name format string
+ *
+ *	Passed a format string - eg "lt%d" it will try and find a suitable
+ *	id. It scans list of devices to build up a free map, then chooses
+ *	the first empty slot. The caller must hold the dev_base or rtnl lock
+ *	while allocating the name and adding the device in order to avoid
+ *	duplicates.
+ *	Limited to bits_per_byte * page size devices (ie 32K on most platforms).
+ *	Returns the number of the unit assigned or a negative errno code.
+ */
+
+int dev_alloc_name(struct net_device *dev, const char *name)
+{
+	char buf[IFNAMSIZ];
+	struct net *net;
+	int ret;
+
+	BUG_ON(!dev_net(dev));
+	net = dev_net(dev);
+	ret = __dev_alloc_name(net, name, buf);
+	if (ret >= 0)
+		strlcpy(dev->name, buf, IFNAMSIZ);
+	return ret;
+}
+
+
+/**
+ *	dev_change_name - change name of a device
+ *	@dev: device
+ *	@newname: name (or format string) must be at least IFNAMSIZ
+ *
+ *	Change name of a device, can pass format strings "eth%d".
+ *	for wildcarding.
+ */
+int dev_change_name(struct net_device *dev, const char *newname)
+{
+	char oldname[IFNAMSIZ];
+	int err = 0;
+	int ret;
+	struct net *net;
+
+	ASSERT_RTNL();
+	BUG_ON(!dev_net(dev));
+
+	net = dev_net(dev);
+	if (dev->flags & IFF_UP)
+		return -EBUSY;
+
+	if (!dev_valid_name(newname))
+		return -EINVAL;
+
+	if (strncmp(newname, dev->name, IFNAMSIZ) == 0)
+		return 0;
+
+	memcpy(oldname, dev->name, IFNAMSIZ);
+
+	if (strchr(newname, '%')) {
+		err = dev_alloc_name(dev, newname);
+		if (err < 0)
+			return err;
+	}
+	else if (__dev_get_by_name(net, newname))
+		return -EEXIST;
+	else
+		strlcpy(dev->name, newname, IFNAMSIZ);
+
+rollback:
+	/* For now only devices in the initial network namespace
+	 * are in sysfs.
+	 */
+	if (net == &init_net) {
+		ret = device_rename(&dev->dev, dev->name);
+		if (ret) {
+			memcpy(dev->name, oldname, IFNAMSIZ);
+			return ret;
+		}
+	}
+
+	write_lock_bh(&dev_base_lock);
+	hlist_del(&dev->name_hlist);
+	hlist_add_head(&dev->name_hlist, dev_name_hash(net, dev->name));
+	write_unlock_bh(&dev_base_lock);
+
+	ret = call_netdevice_notifiers(NETDEV_CHANGENAME, dev);
+	ret = notifier_to_errno(ret);
+
+	if (ret) {
+		if (err) {
+			printk(KERN_ERR
+			       "%s: name change rollback failed: %d.\n",
+			       dev->name, ret);
+		} else {
+			err = ret;
+			memcpy(dev->name, oldname, IFNAMSIZ);
+			goto rollback;
+		}
+	}
+
+	return err;
+}
+
+/**
+ *	dev_set_alias - change ifalias of a device
+ *	@dev: device
+ *	@alias: name up to IFALIASZ
+ *	@len: limit of bytes to copy from info
+ *
+ *	Set ifalias for a device,
+ */
+int dev_set_alias(struct net_device *dev, const char *alias, size_t len)
+{
+	ASSERT_RTNL();
+
+	if (len >= IFALIASZ)
+		return -EINVAL;
+
+	if (!len) {
+		if (dev->ifalias) {
+			kfree(dev->ifalias);
+			dev->ifalias = NULL;
+		}
+		return 0;
+	}
+
+	dev->ifalias = krealloc(dev->ifalias, len+1, GFP_KERNEL);
+	if (!dev->ifalias)
+		return -ENOMEM;
+
+	strlcpy(dev->ifalias, alias, len+1);
+	return len;
+}
+
+
+/**
+ *	netdev_features_change - device changes features
+ *	@dev: device to cause notification
+ *
+ *	Called to indicate a device has changed features.
+ */
+void netdev_features_change(struct net_device *dev)
+{
+	call_netdevice_notifiers(NETDEV_FEAT_CHANGE, dev);
+}
+EXPORT_SYMBOL(netdev_features_change);
+
+/**
+ *	netdev_state_change - device changes state
+ *	@dev: device to cause notification
+ *
+ *	Called to indicate a device has changed state. This function calls
+ *	the notifier chains for netdev_chain and sends a NEWLINK message
+ *	to the routing socket.
+ */
+void netdev_state_change(struct net_device *dev)
+{
+	if (dev->flags & IFF_UP) {
+		call_netdevice_notifiers(NETDEV_CHANGE, dev);
+		rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
+	}
+}
+
+void netdev_bonding_change(struct net_device *dev)
+{
+	call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, dev);
+}
+EXPORT_SYMBOL(netdev_bonding_change);
+
+/**
+ *	dev_load 	- load a network module
+ *	@net: the applicable net namespace
+ *	@name: name of interface
+ *
+ *	If a network interface is not present and the process has suitable
+ *	privileges this function loads the module. If module loading is not
+ *	available in this kernel then it becomes a nop.
+ */
+
+void dev_load(struct net *net, const char *name)
+{
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_name(net, name);
+	read_unlock(&dev_base_lock);
+
+	if (!dev && capable(CAP_SYS_MODULE))
+		request_module("%s", name);
+}
+
+/**
+ *	dev_open	- prepare an interface for use.
+ *	@dev:	device to open
+ *
+ *	Takes a device from down to up state. The device's private open
+ *	function is invoked and then the multicast lists are loaded. Finally
+ *	the device is moved into the up state and a %NETDEV_UP message is
+ *	sent to the netdev notifier chain.
+ *
+ *	Calling this function on an active interface is a nop. On a failure
+ *	a negative errno code is returned.
+ */
+int dev_open(struct net_device *dev)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int ret = 0;
+
+	ASSERT_RTNL();
+
+	/*
+	 *	Is it already up?
+	 */
+
+	if (dev->flags & IFF_UP)
+		return 0;
+
+	/*
+	 *	Is it even present?
+	 */
+	if (!netif_device_present(dev))
+		return -ENODEV;
+
+	/*
+	 *	Call device private open method
+	 */
+	set_bit(__LINK_STATE_START, &dev->state);
+
+	if (ops->ndo_validate_addr)
+		ret = ops->ndo_validate_addr(dev);
+
+	if (!ret && ops->ndo_open)
+		ret = ops->ndo_open(dev);
+
+	/*
+	 *	If it went open OK then:
+	 */
+
+	if (ret)
+		clear_bit(__LINK_STATE_START, &dev->state);
+	else {
+		/*
+		 *	Set the flags.
+		 */
+		dev->flags |= IFF_UP;
+
+		/*
+		 *	Enable NET_DMA
+		 */
+		net_dmaengine_get();
+
+		/*
+		 *	Initialize multicasting status
+		 */
+		dev_set_rx_mode(dev);
+
+		/*
+		 *	Wakeup transmit queue engine
+		 */
+		dev_activate(dev);
+
+		/*
+		 *	... and announce new interface.
+		 */
+		call_netdevice_notifiers(NETDEV_UP, dev);
+	}
+
+	return ret;
+}
+
+/**
+ *	dev_close - shutdown an interface.
+ *	@dev: device to shutdown
+ *
+ *	This function moves an active device into down state. A
+ *	%NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device
+ *	is then deactivated and finally a %NETDEV_DOWN is sent to the notifier
+ *	chain.
+ */
+int dev_close(struct net_device *dev)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	ASSERT_RTNL();
+
+	might_sleep();
+
+	if (!(dev->flags & IFF_UP))
+		return 0;
+
+	/*
+	 *	Tell people we are going down, so that they can
+	 *	prepare to death, when device is still operating.
+	 */
+	call_netdevice_notifiers(NETDEV_GOING_DOWN, dev);
+
+	clear_bit(__LINK_STATE_START, &dev->state);
+
+	/* Synchronize to scheduled poll. We cannot touch poll list,
+	 * it can be even on different cpu. So just clear netif_running().
+	 *
+	 * dev->stop() will invoke napi_disable() on all of it's
+	 * napi_struct instances on this device.
+	 */
+	smp_mb__after_clear_bit(); /* Commit netif_running(). */
+
+	dev_deactivate(dev);
+
+	/*
+	 *	Call the device specific close. This cannot fail.
+	 *	Only if device is UP
+	 *
+	 *	We allow it to be called even after a DETACH hot-plug
+	 *	event.
+	 */
+	if (ops->ndo_stop)
+		ops->ndo_stop(dev);
+
+	/*
+	 *	Device is now down.
+	 */
+
+	dev->flags &= ~IFF_UP;
+
+	/*
+	 * Tell people we are down
+	 */
+	call_netdevice_notifiers(NETDEV_DOWN, dev);
+
+	/*
+	 *	Shutdown NET_DMA
+	 */
+	net_dmaengine_put();
+
+	return 0;
+}
+
+
+/**
+ *	dev_disable_lro - disable Large Receive Offload on a device
+ *	@dev: device
+ *
+ *	Disable Large Receive Offload (LRO) on a net device.  Must be
+ *	called under RTNL.  This is needed if received packets may be
+ *	forwarded to another interface.
+ */
+void dev_disable_lro(struct net_device *dev)
+{
+	if (dev->ethtool_ops && dev->ethtool_ops->get_flags &&
+	    dev->ethtool_ops->set_flags) {
+		u32 flags = dev->ethtool_ops->get_flags(dev);
+		if (flags & ETH_FLAG_LRO) {
+			flags &= ~ETH_FLAG_LRO;
+			dev->ethtool_ops->set_flags(dev, flags);
+		}
+	}
+	WARN_ON(dev->features & NETIF_F_LRO);
+}
+EXPORT_SYMBOL(dev_disable_lro);
+
+
+static int dev_boot_phase = 1;
+
+/*
+ *	Device change register/unregister. These are not inline or static
+ *	as we export them to the world.
+ */
+
+/**
+ *	register_netdevice_notifier - register a network notifier block
+ *	@nb: notifier
+ *
+ *	Register a notifier to be called when network device events occur.
+ *	The notifier passed is linked into the kernel structures and must
+ *	not be reused until it has been unregistered. A negative errno code
+ *	is returned on a failure.
+ *
+ * 	When registered all registration and up events are replayed
+ *	to the new notifier to allow device to have a race free
+ *	view of the network device list.
+ */
+
+int register_netdevice_notifier(struct notifier_block *nb)
+{
+	struct net_device *dev;
+	struct net_device *last;
+	struct net *net;
+	int err;
+
+	rtnl_lock();
+	err = raw_notifier_chain_register(&netdev_chain, nb);
+	if (err)
+		goto unlock;
+	if (dev_boot_phase)
+		goto unlock;
+	for_each_net(net) {
+		for_each_netdev(net, dev) {
+			err = nb->notifier_call(nb, NETDEV_REGISTER, dev);
+			err = notifier_to_errno(err);
+			if (err)
+				goto rollback;
+
+			if (!(dev->flags & IFF_UP))
+				continue;
+
+			nb->notifier_call(nb, NETDEV_UP, dev);
+		}
+	}
+
+unlock:
+	rtnl_unlock();
+	return err;
+
+rollback:
+	last = dev;
+	for_each_net(net) {
+		for_each_netdev(net, dev) {
+			if (dev == last)
+				break;
+
+			if (dev->flags & IFF_UP) {
+				nb->notifier_call(nb, NETDEV_GOING_DOWN, dev);
+				nb->notifier_call(nb, NETDEV_DOWN, dev);
+			}
+			nb->notifier_call(nb, NETDEV_UNREGISTER, dev);
+		}
+	}
+
+	raw_notifier_chain_unregister(&netdev_chain, nb);
+	goto unlock;
+}
+
+/**
+ *	unregister_netdevice_notifier - unregister a network notifier block
+ *	@nb: notifier
+ *
+ *	Unregister a notifier previously registered by
+ *	register_netdevice_notifier(). The notifier is unlinked into the
+ *	kernel structures and may then be reused. A negative errno code
+ *	is returned on a failure.
+ */
+
+int unregister_netdevice_notifier(struct notifier_block *nb)
+{
+	int err;
+
+	rtnl_lock();
+	err = raw_notifier_chain_unregister(&netdev_chain, nb);
+	rtnl_unlock();
+	return err;
+}
+
+/**
+ *	call_netdevice_notifiers - call all network notifier blocks
+ *      @val: value passed unmodified to notifier function
+ *      @dev: net_device pointer passed unmodified to notifier function
+ *
+ *	Call all network notifier blocks.  Parameters and return value
+ *	are as for raw_notifier_call_chain().
+ */
+
+int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
+{
+	return raw_notifier_call_chain(&netdev_chain, val, dev);
+}
+
+/* When > 0 there are consumers of rx skb time stamps */
+static atomic_t netstamp_needed = ATOMIC_INIT(0);
+
+void net_enable_timestamp(void)
+{
+	atomic_inc(&netstamp_needed);
+}
+
+void net_disable_timestamp(void)
+{
+	atomic_dec(&netstamp_needed);
+}
+
+static inline void net_timestamp(struct sk_buff *skb)
+{
+	if (atomic_read(&netstamp_needed))
+		__net_timestamp(skb);
+	else
+		skb->tstamp.tv64 = 0;
+}
+
+/*
+ *	Support routine. Sends outgoing frames to any network
+ *	taps currently in use.
+ */
+
+static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct packet_type *ptype;
+
+	net_timestamp(skb);
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, &ptype_all, list) {
+		/* Never send packets back to the socket
+		 * they originated from - MvS (miquels@drinkel.ow.org)
+		 */
+		if ((ptype->dev == dev || !ptype->dev) &&
+		    (ptype->af_packet_priv == NULL ||
+		     (struct sock *)ptype->af_packet_priv != skb->sk)) {
+			struct sk_buff *skb2= skb_clone(skb, GFP_ATOMIC);
+			if (!skb2)
+				break;
+
+			/* skb->nh should be correctly
+			   set by sender, so that the second statement is
+			   just protection against buggy protocols.
+			 */
+			skb_reset_mac_header(skb2);
+
+			if (skb_network_header(skb2) < skb2->data ||
+			    skb2->network_header > skb2->tail) {
+				if (net_ratelimit())
+					printk(KERN_CRIT "protocol %04x is "
+					       "buggy, dev %s\n",
+					       skb2->protocol, dev->name);
+				skb_reset_network_header(skb2);
+			}
+
+			skb2->transport_header = skb2->network_header;
+			skb2->pkt_type = PACKET_OUTGOING;
+			ptype->func(skb2, skb->dev, ptype, skb->dev);
+		}
+	}
+	rcu_read_unlock();
+}
+
+
+static inline void __netif_reschedule(struct Qdisc *q)
+{
+	struct softnet_data *sd;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	sd = &__get_cpu_var(softnet_data);
+	q->next_sched = sd->output_queue;
+	sd->output_queue = q;
+	raise_softirq_irqoff(NET_TX_SOFTIRQ);
+	local_irq_restore(flags);
+}
+
+void __netif_schedule(struct Qdisc *q)
+{
+	if (!test_and_set_bit(__QDISC_STATE_SCHED, &q->state))
+		__netif_reschedule(q);
+}
+EXPORT_SYMBOL(__netif_schedule);
+
+void dev_kfree_skb_irq(struct sk_buff *skb)
+{
+	if (atomic_dec_and_test(&skb->users)) {
+		struct softnet_data *sd;
+		unsigned long flags;
+
+		local_irq_save(flags);
+		sd = &__get_cpu_var(softnet_data);
+		skb->next = sd->completion_queue;
+		sd->completion_queue = skb;
+		raise_softirq_irqoff(NET_TX_SOFTIRQ);
+		local_irq_restore(flags);
+	}
+}
+EXPORT_SYMBOL(dev_kfree_skb_irq);
+
+void dev_kfree_skb_any(struct sk_buff *skb)
+{
+	if (in_irq() || irqs_disabled())
+		dev_kfree_skb_irq(skb);
+	else
+		dev_kfree_skb(skb);
+}
+EXPORT_SYMBOL(dev_kfree_skb_any);
+
+
+/**
+ * netif_device_detach - mark device as removed
+ * @dev: network device
+ *
+ * Mark device as removed from system and therefore no longer available.
+ */
+void netif_device_detach(struct net_device *dev)
+{
+	if (test_and_clear_bit(__LINK_STATE_PRESENT, &dev->state) &&
+	    netif_running(dev)) {
+		netif_stop_queue(dev);
+	}
+}
+EXPORT_SYMBOL(netif_device_detach);
+
+/**
+ * netif_device_attach - mark device as attached
+ * @dev: network device
+ *
+ * Mark device as attached from system and restart if needed.
+ */
+void netif_device_attach(struct net_device *dev)
+{
+	if (!test_and_set_bit(__LINK_STATE_PRESENT, &dev->state) &&
+	    netif_running(dev)) {
+		netif_wake_queue(dev);
+		__netdev_watchdog_up(dev);
+	}
+}
+EXPORT_SYMBOL(netif_device_attach);
+
+static bool can_checksum_protocol(unsigned long features, __be16 protocol)
+{
+	return ((features & NETIF_F_GEN_CSUM) ||
+		((features & NETIF_F_IP_CSUM) &&
+		 protocol == htons(ETH_P_IP)) ||
+		((features & NETIF_F_IPV6_CSUM) &&
+		 protocol == htons(ETH_P_IPV6)));
+}
+
+static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb)
+{
+	if (can_checksum_protocol(dev->features, skb->protocol))
+		return true;
+
+	if (skb->protocol == htons(ETH_P_8021Q)) {
+		struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
+		if (can_checksum_protocol(dev->features & dev->vlan_features,
+					  veh->h_vlan_encapsulated_proto))
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * Invalidate hardware checksum when packet is to be mangled, and
+ * complete checksum manually on outgoing path.
+ */
+int skb_checksum_help(struct sk_buff *skb)
+{
+	__wsum csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed == CHECKSUM_COMPLETE)
+		goto out_set_summed;
+
+	if (unlikely(skb_shinfo(skb)->gso_size)) {
+		/* Let GSO fix up the checksum. */
+		goto out_set_summed;
+	}
+
+	offset = skb->csum_start - skb_headroom(skb);
+	BUG_ON(offset >= skb_headlen(skb));
+	csum = skb_checksum(skb, offset, skb->len - offset, 0);
+
+	offset += skb->csum_offset;
+	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+
+	*(__sum16 *)(skb->data + offset) = csum_fold(csum);
+out_set_summed:
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
+/**
+ *	skb_gso_segment - Perform segmentation on skb.
+ *	@skb: buffer to segment
+ *	@features: features for the output path (see dev->features)
+ *
+ *	This function segments the given skb and returns a list of segments.
+ *
+ *	It may return NULL if the skb requires no segmentation.  This is
+ *	only possible when GSO is used for verifying header integrity.
+ */
+struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
+{
+	struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);
+	struct packet_type *ptype;
+	__be16 type = skb->protocol;
+	int err;
+
+	skb_reset_mac_header(skb);
+	skb->mac_len = skb->network_header - skb->mac_header;
+	__skb_pull(skb, skb->mac_len);
+
+	if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
+		struct net_device *dev = skb->dev;
+		struct ethtool_drvinfo info = {};
+
+		if (dev && dev->ethtool_ops && dev->ethtool_ops->get_drvinfo)
+			dev->ethtool_ops->get_drvinfo(dev, &info);
+
+		WARN(1, "%s: caps=(0x%lx, 0x%lx) len=%d data_len=%d "
+			"ip_summed=%d",
+		     info.driver, dev ? dev->features : 0L,
+		     skb->sk ? skb->sk->sk_route_caps : 0L,
+		     skb->len, skb->data_len, skb->ip_summed);
+
+		if (skb_header_cloned(skb) &&
+		    (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
+			return ERR_PTR(err);
+	}
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype,
+			&ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
+		if (ptype->type == type && !ptype->dev && ptype->gso_segment) {
+			if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
+				err = ptype->gso_send_check(skb);
+				segs = ERR_PTR(err);
+				if (err || skb_gso_ok(skb, features))
+					break;
+				__skb_push(skb, (skb->data -
+						 skb_network_header(skb)));
+			}
+			segs = ptype->gso_segment(skb, features);
+			break;
+		}
+	}
+	rcu_read_unlock();
+
+	__skb_push(skb, skb->data - skb_mac_header(skb));
+
+	return segs;
+}
+
+EXPORT_SYMBOL(skb_gso_segment);
+
+/* Take action when hardware reception checksum errors are detected. */
+#ifdef CONFIG_BUG
+void netdev_rx_csum_fault(struct net_device *dev)
+{
+	if (net_ratelimit()) {
+		printk(KERN_ERR "%s: hw csum failure.\n",
+			dev ? dev->name : "<unknown>");
+		dump_stack();
+	}
+}
+EXPORT_SYMBOL(netdev_rx_csum_fault);
+#endif
+
+/* Actually, we should eliminate this check as soon as we know, that:
+ * 1. IOMMU is present and allows to map all the memory.
+ * 2. No high memory really exists on this machine.
+ */
+
+static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
+{
+#ifdef CONFIG_HIGHMEM
+	int i;
+
+	if (dev->features & NETIF_F_HIGHDMA)
+		return 0;
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
+		if (PageHighMem(skb_shinfo(skb)->frags[i].page))
+			return 1;
+
+#endif
+	return 0;
+}
+
+struct dev_gso_cb {
+	void (*destructor)(struct sk_buff *skb);
+};
+
+#define DEV_GSO_CB(skb) ((struct dev_gso_cb *)(skb)->cb)
+
+static void dev_gso_skb_destructor(struct sk_buff *skb)
+{
+	struct dev_gso_cb *cb;
+
+	do {
+		struct sk_buff *nskb = skb->next;
+
+		skb->next = nskb->next;
+		nskb->next = NULL;
+		kfree_skb(nskb);
+	} while (skb->next);
+
+	cb = DEV_GSO_CB(skb);
+	if (cb->destructor)
+		cb->destructor(skb);
+}
+
+/**
+ *	dev_gso_segment - Perform emulated hardware segmentation on skb.
+ *	@skb: buffer to segment
+ *
+ *	This function segments the given skb and stores the list of segments
+ *	in skb->next.
+ */
+static int dev_gso_segment(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	struct sk_buff *segs;
+	int features = dev->features & ~(illegal_highdma(dev, skb) ?
+					 NETIF_F_SG : 0);
+
+	segs = skb_gso_segment(skb, features);
+
+	/* Verifying header integrity only. */
+	if (!segs)
+		return 0;
+
+	if (IS_ERR(segs))
+		return PTR_ERR(segs);
+
+	skb->next = segs;
+	DEV_GSO_CB(skb)->destructor = skb->destructor;
+	skb->destructor = dev_gso_skb_destructor;
+
+	return 0;
+}
+
+int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
+			struct netdev_queue *txq)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	prefetch(&dev->netdev_ops->ndo_start_xmit);
+	if (likely(!skb->next)) {
+		if (!list_empty(&ptype_all))
+			dev_queue_xmit_nit(skb, dev);
+
+		if (netif_needs_gso(dev, skb)) {
+			if (unlikely(dev_gso_segment(skb)))
+				goto out_kfree_skb;
+			if (skb->next)
+				goto gso;
+		}
+
+		return ops->ndo_start_xmit(skb, dev);
+	}
+
+gso:
+	do {
+		struct sk_buff *nskb = skb->next;
+		int rc;
+
+		skb->next = nskb->next;
+		nskb->next = NULL;
+		rc = ops->ndo_start_xmit(nskb, dev);
+		if (unlikely(rc)) {
+			nskb->next = skb->next;
+			skb->next = nskb;
+			return rc;
+		}
+		if (unlikely(netif_tx_queue_stopped(txq) && skb->next))
+			return NETDEV_TX_BUSY;
+	} while (skb->next);
+
+	skb->destructor = DEV_GSO_CB(skb)->destructor;
+
+out_kfree_skb:
+	kfree_skb(skb);
+	return 0;
+}
+
+static u32 simple_tx_hashrnd;
+static int simple_tx_hashrnd_initialized = 0;
+
+static u16 simple_tx_hash(struct net_device *dev, struct sk_buff *skb)
+{
+	u32 addr1, addr2, ports;
+	u32 hash, ihl;
+	u8 ip_proto = 0;
+
+	if (unlikely(!simple_tx_hashrnd_initialized)) {
+		get_random_bytes(&simple_tx_hashrnd, 4);
+		simple_tx_hashrnd_initialized = 1;
+	}
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		if (!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)))
+			ip_proto = ip_hdr(skb)->protocol;
+		addr1 = ip_hdr(skb)->saddr;
+		addr2 = ip_hdr(skb)->daddr;
+		ihl = ip_hdr(skb)->ihl;
+		break;
+	case htons(ETH_P_IPV6):
+		ip_proto = ipv6_hdr(skb)->nexthdr;
+		addr1 = ipv6_hdr(skb)->saddr.s6_addr32[3];
+		addr2 = ipv6_hdr(skb)->daddr.s6_addr32[3];
+		ihl = (40 >> 2);
+		break;
+	default:
+		return 0;
+	}
+
+
+	switch (ip_proto) {
+	case IPPROTO_TCP:
+	case IPPROTO_UDP:
+	case IPPROTO_DCCP:
+	case IPPROTO_ESP:
+	case IPPROTO_AH:
+	case IPPROTO_SCTP:
+	case IPPROTO_UDPLITE:
+		ports = *((u32 *) (skb_network_header(skb) + (ihl * 4)));
+		break;
+
+	default:
+		ports = 0;
+		break;
+	}
+
+	hash = jhash_3words(addr1, addr2, ports, simple_tx_hashrnd);
+
+	return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
+}
+
+static struct netdev_queue *dev_pick_tx(struct net_device *dev,
+					struct sk_buff *skb)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	u16 queue_index = 0;
+
+	if (ops->ndo_select_queue)
+		queue_index = ops->ndo_select_queue(dev, skb);
+	else if (dev->real_num_tx_queues > 1)
+		queue_index = simple_tx_hash(dev, skb);
+
+	skb_set_queue_mapping(skb, queue_index);
+	return netdev_get_tx_queue(dev, queue_index);
+}
+
+/**
+ *	dev_queue_xmit - transmit a buffer
+ *	@skb: buffer to transmit
+ *
+ *	Queue a buffer for transmission to a network device. The caller must
+ *	have set the device and priority and built the buffer before calling
+ *	this function. The function can be called from an interrupt.
+ *
+ *	A negative errno code is returned on a failure. A success does not
+ *	guarantee the frame will be transmitted as it may be dropped due
+ *	to congestion or traffic shaping.
+ *
+ * -----------------------------------------------------------------------------------
+ *      I notice this method can also return errors from the queue disciplines,
+ *      including NET_XMIT_DROP, which is a positive value.  So, errors can also
+ *      be positive.
+ *
+ *      Regardless of the return value, the skb is consumed, so it is currently
+ *      difficult to retry a send to this method.  (You can bump the ref count
+ *      before sending to hold a reference for retry if you are careful.)
+ *
+ *      When calling this method, interrupts MUST be enabled.  This is because
+ *      the BH enable code must have IRQs enabled so that it will not deadlock.
+ *          --BLG
+ */
+int dev_queue_xmit(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	struct netdev_queue *txq;
+	struct Qdisc *q;
+	int rc = -ENOMEM;
+
+	/* GSO will handle the following emulations directly. */
+	if (netif_needs_gso(dev, skb))
+		goto gso;
+
+	if (skb_shinfo(skb)->frag_list &&
+	    !(dev->features & NETIF_F_FRAGLIST) &&
+	    __skb_linearize(skb))
+		goto out_kfree_skb;
+
+	/* Fragmented skb is linearized if device does not support SG,
+	 * or if at least one of fragments is in highmem and device
+	 * does not support DMA from it.
+	 */
+	if (skb_shinfo(skb)->nr_frags &&
+	    (!(dev->features & NETIF_F_SG) || illegal_highdma(dev, skb)) &&
+	    __skb_linearize(skb))
+		goto out_kfree_skb;
+
+	/* If packet is not checksummed and device does not support
+	 * checksumming for this protocol, complete checksumming here.
+	 */
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		skb_set_transport_header(skb, skb->csum_start -
+					      skb_headroom(skb));
+		if (!dev_can_checksum(dev, skb) && skb_checksum_help(skb))
+			goto out_kfree_skb;
+	}
+
+gso:
+	/* Disable soft irqs for various locks below. Also
+	 * stops preemption for RCU.
+	 */
+	rcu_read_lock_bh();
+
+	txq = dev_pick_tx(dev, skb);
+	q = rcu_dereference(txq->qdisc);
+
+#ifdef CONFIG_NET_CLS_ACT
+	skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS);
+#endif
+	if (q->enqueue) {
+		spinlock_t *root_lock = qdisc_lock(q);
+
+		spin_lock(root_lock);
+
+		if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) {
+			kfree_skb(skb);
+			rc = NET_XMIT_DROP;
+		} else {
+			rc = qdisc_enqueue_root(skb, q);
+			qdisc_run(q);
+		}
+		spin_unlock(root_lock);
+
+		goto out;
+	}
+
+	/* The device has no queue. Common case for software devices:
+	   loopback, all the sorts of tunnels...
+
+	   Really, it is unlikely that netif_tx_lock protection is necessary
+	   here.  (f.e. loopback and IP tunnels are clean ignoring statistics
+	   counters.)
+	   However, it is possible, that they rely on protection
+	   made by us here.
+
+	   Check this and shot the lock. It is not prone from deadlocks.
+	   Either shot noqueue qdisc, it is even simpler 8)
+	 */
+	if (dev->flags & IFF_UP) {
+		int cpu = smp_processor_id(); /* ok because BHs are off */
+
+		if (txq->xmit_lock_owner != cpu) {
+
+			HARD_TX_LOCK(dev, txq, cpu);
+
+			if (!netif_tx_queue_stopped(txq)) {
+				rc = 0;
+				if (!dev_hard_start_xmit(skb, dev, txq)) {
+					HARD_TX_UNLOCK(dev, txq);
+					goto out;
+				}
+			}
+			HARD_TX_UNLOCK(dev, txq);
+			if (net_ratelimit())
+				printk(KERN_CRIT "Virtual device %s asks to "
+				       "queue packet!\n", dev->name);
+		} else {
+			/* Recursion is detected! It is possible,
+			 * unfortunately */
+			if (net_ratelimit())
+				printk(KERN_CRIT "Dead loop on virtual device "
+				       "%s, fix it urgently!\n", dev->name);
+		}
+	}
+
+	rc = -ENETDOWN;
+	rcu_read_unlock_bh();
+
+out_kfree_skb:
+	kfree_skb(skb);
+	return rc;
+out:
+	rcu_read_unlock_bh();
+	return rc;
+}
+
+
+/*=======================================================================
+			Receiver routines
+  =======================================================================*/
+
+int netdev_max_backlog __read_mostly = 1000;
+int netdev_budget __read_mostly = 300;
+int weight_p __read_mostly = 64;            /* old backlog weight */
+
+DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, };
+
+
+/**
+ *	netif_rx	-	post buffer to the network code
+ *	@skb: buffer to post
+ *
+ *	This function receives a packet from a device driver and queues it for
+ *	the upper (protocol) levels to process.  It always succeeds. The buffer
+ *	may be dropped during processing for congestion control or by the
+ *	protocol layers.
+ *
+ *	return values:
+ *	NET_RX_SUCCESS	(no congestion)
+ *	NET_RX_DROP     (packet was dropped)
+ *
+ */
+
+int netif_rx(struct sk_buff *skb)
+{
+	struct softnet_data *queue;
+	unsigned long flags;
+
+	/* if netpoll wants it, pretend we never saw it */
+	if (netpoll_rx(skb))
+		return NET_RX_DROP;
+
+	if (!skb->tstamp.tv64)
+		net_timestamp(skb);
+
+	/*
+	 * The code is rearranged so that the path is the most
+	 * short when CPU is congested, but is still operating.
+	 */
+	local_irq_save(flags);
+	queue = &__get_cpu_var(softnet_data);
+
+	__get_cpu_var(netdev_rx_stat).total++;
+	if (queue->input_pkt_queue.qlen <= netdev_max_backlog) {
+		if (queue->input_pkt_queue.qlen) {
+enqueue:
+			__skb_queue_tail(&queue->input_pkt_queue, skb);
+			local_irq_restore(flags);
+			return NET_RX_SUCCESS;
+		}
+
+		napi_schedule(&queue->backlog);
+		goto enqueue;
+	}
+
+	__get_cpu_var(netdev_rx_stat).dropped++;
+	local_irq_restore(flags);
+
+	kfree_skb(skb);
+	return NET_RX_DROP;
+}
+
+int netif_rx_ni(struct sk_buff *skb)
+{
+	int err;
+
+	preempt_disable();
+	err = netif_rx(skb);
+	if (local_softirq_pending())
+		do_softirq();
+	preempt_enable();
+
+	return err;
+}
+
+EXPORT_SYMBOL(netif_rx_ni);
+
+static void net_tx_action(struct softirq_action *h)
+{
+	struct softnet_data *sd = &__get_cpu_var(softnet_data);
+
+	if (sd->completion_queue) {
+		struct sk_buff *clist;
+
+		local_irq_disable();
+		clist = sd->completion_queue;
+		sd->completion_queue = NULL;
+		local_irq_enable();
+
+		while (clist) {
+			struct sk_buff *skb = clist;
+			clist = clist->next;
+
+			WARN_ON(atomic_read(&skb->users));
+			__kfree_skb(skb);
+		}
+	}
+
+	if (sd->output_queue) {
+		struct Qdisc *head;
+
+		local_irq_disable();
+		head = sd->output_queue;
+		sd->output_queue = NULL;
+		local_irq_enable();
+
+		while (head) {
+			struct Qdisc *q = head;
+			spinlock_t *root_lock;
+
+			head = head->next_sched;
+
+			root_lock = qdisc_lock(q);
+			if (spin_trylock(root_lock)) {
+				smp_mb__before_clear_bit();
+				clear_bit(__QDISC_STATE_SCHED,
+					  &q->state);
+				qdisc_run(q);
+				spin_unlock(root_lock);
+			} else {
+				if (!test_bit(__QDISC_STATE_DEACTIVATED,
+					      &q->state)) {
+					__netif_reschedule(q);
+				} else {
+					smp_mb__before_clear_bit();
+					clear_bit(__QDISC_STATE_SCHED,
+						  &q->state);
+				}
+			}
+		}
+	}
+}
+
+static inline int deliver_skb(struct sk_buff *skb,
+			      struct packet_type *pt_prev,
+			      struct net_device *orig_dev)
+{
+	atomic_inc(&skb->users);
+	return pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
+}
+
+#if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE)
+/* These hooks defined here for ATM */
+struct net_bridge;
+struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
+						unsigned char *addr);
+void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly;
+
+/*
+ * If bridge module is loaded call bridging hook.
+ *  returns NULL if packet was consumed.
+ */
+struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p,
+					struct sk_buff *skb) __read_mostly;
+static inline struct sk_buff *handle_bridge(struct sk_buff *skb,
+					    struct packet_type **pt_prev, int *ret,
+					    struct net_device *orig_dev)
+{
+	struct net_bridge_port *port;
+
+	if (skb->pkt_type == PACKET_LOOPBACK ||
+	    (port = rcu_dereference(skb->dev->br_port)) == NULL)
+		return skb;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	}
+
+	return br_handle_frame_hook(port, skb);
+}
+#else
+#define handle_bridge(skb, pt_prev, ret, orig_dev)	(skb)
+#endif
+
+#if defined(CONFIG_MACVLAN) || defined(CONFIG_MACVLAN_MODULE)
+struct sk_buff *(*macvlan_handle_frame_hook)(struct sk_buff *skb) __read_mostly;
+EXPORT_SYMBOL_GPL(macvlan_handle_frame_hook);
+
+static inline struct sk_buff *handle_macvlan(struct sk_buff *skb,
+					     struct packet_type **pt_prev,
+					     int *ret,
+					     struct net_device *orig_dev)
+{
+	if (skb->dev->macvlan_port == NULL)
+		return skb;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	}
+	return macvlan_handle_frame_hook(skb);
+}
+#else
+#define handle_macvlan(skb, pt_prev, ret, orig_dev)	(skb)
+#endif
+
+#ifdef CONFIG_NET_CLS_ACT
+/* TODO: Maybe we should just force sch_ingress to be compiled in
+ * when CONFIG_NET_CLS_ACT is? otherwise some useless instructions
+ * a compare and 2 stores extra right now if we dont have it on
+ * but have CONFIG_NET_CLS_ACT
+ * NOTE: This doesnt stop any functionality; if you dont have
+ * the ingress scheduler, you just cant add policies on ingress.
+ *
+ */
+static int ing_filter(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	u32 ttl = G_TC_RTTL(skb->tc_verd);
+	struct netdev_queue *rxq;
+	int result = TC_ACT_OK;
+	struct Qdisc *q;
+
+	if (MAX_RED_LOOP < ttl++) {
+		printk(KERN_WARNING
+		       "Redir loop detected Dropping packet (%d->%d)\n",
+		       skb->iif, dev->ifindex);
+		return TC_ACT_SHOT;
+	}
+
+	skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl);
+	skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS);
+
+	rxq = &dev->rx_queue;
+
+	q = rxq->qdisc;
+	if (q != &noop_qdisc) {
+		spin_lock(qdisc_lock(q));
+		if (likely(!test_bit(__QDISC_STATE_DEACTIVATED, &q->state)))
+			result = qdisc_enqueue_root(skb, q);
+		spin_unlock(qdisc_lock(q));
+	}
+
+	return result;
+}
+
+static inline struct sk_buff *handle_ing(struct sk_buff *skb,
+					 struct packet_type **pt_prev,
+					 int *ret, struct net_device *orig_dev)
+{
+	if (skb->dev->rx_queue.qdisc == &noop_qdisc)
+		goto out;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	} else {
+		/* Huh? Why does turning on AF_PACKET affect this? */
+		skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
+	}
+
+	switch (ing_filter(skb)) {
+	case TC_ACT_SHOT:
+	case TC_ACT_STOLEN:
+		kfree_skb(skb);
+		return NULL;
+	}
+
+out:
+	skb->tc_verd = 0;
+	return skb;
+}
+#endif
+
+/*
+ * 	netif_nit_deliver - deliver received packets to network taps
+ * 	@skb: buffer
+ *
+ * 	This function is used to deliver incoming packets to network
+ * 	taps. It should be used when the normal netif_receive_skb path
+ * 	is bypassed, for example because of VLAN acceleration.
+ */
+void netif_nit_deliver(struct sk_buff *skb)
+{
+	struct packet_type *ptype;
+
+	if (list_empty(&ptype_all))
+		return;
+
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+	skb->mac_len = skb->network_header - skb->mac_header;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, &ptype_all, list) {
+		if (!ptype->dev || ptype->dev == skb->dev)
+			deliver_skb(skb, ptype, skb->dev);
+	}
+	rcu_read_unlock();
+}
+
+/**
+ *	netif_receive_skb - process receive buffer from network
+ *	@skb: buffer to process
+ *
+ *	netif_receive_skb() is the main receive data processing function.
+ *	It always succeeds. The buffer may be dropped during processing
+ *	for congestion control or by the protocol layers.
+ *
+ *	This function may only be called from softirq context and interrupts
+ *	should be enabled.
+ *
+ *	Return values (usually ignored):
+ *	NET_RX_SUCCESS: no congestion
+ *	NET_RX_DROP: packet was dropped
+ */
+int netif_receive_skb(struct sk_buff *skb)
+{
+	struct packet_type *ptype, *pt_prev;
+	struct net_device *orig_dev;
+	struct net_device *null_or_orig;
+	int ret = NET_RX_DROP;
+	__be16 type;
+
+	if (skb->vlan_tci && vlan_hwaccel_do_receive(skb))
+		return NET_RX_SUCCESS;
+
+	/* if we've gotten here through NAPI, check netpoll */
+	if (netpoll_receive_skb(skb))
+		return NET_RX_DROP;
+
+	if (!skb->tstamp.tv64)
+		net_timestamp(skb);
+
+	if (!skb->iif)
+		skb->iif = skb->dev->ifindex;
+
+	null_or_orig = NULL;
+	orig_dev = skb->dev;
+	if (orig_dev->master) {
+		if (skb_bond_should_drop(skb))
+			null_or_orig = orig_dev; /* deliver only exact match */
+		else
+			skb->dev = orig_dev->master;
+	}
+
+	__get_cpu_var(netdev_rx_stat).total++;
+
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+	skb->mac_len = skb->network_header - skb->mac_header;
+
+	pt_prev = NULL;
+
+	rcu_read_lock();
+
+#ifdef CONFIG_NET_CLS_ACT
+	if (skb->tc_verd & TC_NCLS) {
+		skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
+		goto ncls;
+	}
+#endif
+
+	list_for_each_entry_rcu(ptype, &ptype_all, list) {
+		if (ptype->dev == null_or_orig || ptype->dev == skb->dev ||
+		    ptype->dev == orig_dev) {
+			if (pt_prev)
+				ret = deliver_skb(skb, pt_prev, orig_dev);
+			pt_prev = ptype;
+		}
+	}
+
+#ifdef CONFIG_NET_CLS_ACT
+	skb = handle_ing(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
+		goto out;
+ncls:
+#endif
+
+	skb = handle_bridge(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
+		goto out;
+	skb = handle_macvlan(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
+		goto out;
+
+	type = skb->protocol;
+	list_for_each_entry_rcu(ptype,
+			&ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
+		if (ptype->type == type &&
+		    (ptype->dev == null_or_orig || ptype->dev == skb->dev ||
+		     ptype->dev == orig_dev)) {
+			if (pt_prev)
+				ret = deliver_skb(skb, pt_prev, orig_dev);
+			pt_prev = ptype;
+		}
+	}
+
+	if (pt_prev) {
+		ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
+	} else {
+		kfree_skb(skb);
+		/* Jamal, now you will not able to escape explaining
+		 * me how you were going to use this. :-)
+		 */
+		ret = NET_RX_DROP;
+	}
+
+out:
+	rcu_read_unlock();
+	return ret;
+}
+
+/* Network device is going away, flush any packets still pending  */
+static void flush_backlog(void *arg)
+{
+	struct net_device *dev = arg;
+	struct softnet_data *queue = &__get_cpu_var(softnet_data);
+	struct sk_buff *skb, *tmp;
+
+	skb_queue_walk_safe(&queue->input_pkt_queue, skb, tmp)
+		if (skb->dev == dev) {
+			__skb_unlink(skb, &queue->input_pkt_queue);
+			kfree_skb(skb);
+		}
+}
+
+static int napi_gro_complete(struct sk_buff *skb)
+{
+	struct packet_type *ptype;
+	__be16 type = skb->protocol;
+	struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];
+	int err = -ENOENT;
+
+	if (NAPI_GRO_CB(skb)->count == 1)
+		goto out;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, head, list) {
+		if (ptype->type != type || ptype->dev || !ptype->gro_complete)
+			continue;
+
+		err = ptype->gro_complete(skb);
+		break;
+	}
+	rcu_read_unlock();
+
+	if (err) {
+		WARN_ON(&ptype->list == head);
+		kfree_skb(skb);
+		return NET_RX_SUCCESS;
+	}
+
+out:
+	skb_shinfo(skb)->gso_size = 0;
+	__skb_push(skb, -skb_network_offset(skb));
+	return netif_receive_skb(skb);
+}
+
+void napi_gro_flush(struct napi_struct *napi)
+{
+	struct sk_buff *skb, *next;
+
+	for (skb = napi->gro_list; skb; skb = next) {
+		next = skb->next;
+		skb->next = NULL;
+		napi_gro_complete(skb);
+	}
+
+	napi->gro_list = NULL;
+}
+EXPORT_SYMBOL(napi_gro_flush);
+
+int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+{
+	struct sk_buff **pp = NULL;
+	struct packet_type *ptype;
+	__be16 type = skb->protocol;
+	struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];
+	int count = 0;
+	int same_flow;
+	int mac_len;
+	int free;
+
+	if (!(skb->dev->features & NETIF_F_GRO))
+		goto normal;
+
+	if (skb_is_gso(skb) || skb_shinfo(skb)->frag_list)
+		goto normal;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, head, list) {
+		struct sk_buff *p;
+
+		if (ptype->type != type || ptype->dev || !ptype->gro_receive)
+			continue;
+
+		skb_reset_network_header(skb);
+		mac_len = skb->network_header - skb->mac_header;
+		skb->mac_len = mac_len;
+		NAPI_GRO_CB(skb)->same_flow = 0;
+		NAPI_GRO_CB(skb)->flush = 0;
+		NAPI_GRO_CB(skb)->free = 0;
+
+		for (p = napi->gro_list; p; p = p->next) {
+			count++;
+
+			if (!NAPI_GRO_CB(p)->same_flow)
+				continue;
+
+			if (p->mac_len != mac_len ||
+			    memcmp(skb_mac_header(p), skb_mac_header(skb),
+				   mac_len))
+				NAPI_GRO_CB(p)->same_flow = 0;
+		}
+
+		pp = ptype->gro_receive(&napi->gro_list, skb);
+		break;
+	}
+	rcu_read_unlock();
+
+	if (&ptype->list == head)
+		goto normal;
+
+	same_flow = NAPI_GRO_CB(skb)->same_flow;
+	free = NAPI_GRO_CB(skb)->free;
+
+	if (pp) {
+		struct sk_buff *nskb = *pp;
+
+		*pp = nskb->next;
+		nskb->next = NULL;
+		napi_gro_complete(nskb);
+		count--;
+	}
+
+	if (same_flow)
+		goto ok;
+
+	if (NAPI_GRO_CB(skb)->flush || count >= MAX_GRO_SKBS) {
+		__skb_push(skb, -skb_network_offset(skb));
+		goto normal;
+	}
+
+	NAPI_GRO_CB(skb)->count = 1;
+	skb_shinfo(skb)->gso_size = skb->len;
+	skb->next = napi->gro_list;
+	napi->gro_list = skb;
+
+ok:
+	return free;
+
+normal:
+	return -1;
+}
+EXPORT_SYMBOL(dev_gro_receive);
+
+static int __napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+{
+	struct sk_buff *p;
+
+	for (p = napi->gro_list; p; p = p->next) {
+		NAPI_GRO_CB(p)->same_flow = 1;
+		NAPI_GRO_CB(p)->flush = 0;
+	}
+
+	return dev_gro_receive(napi, skb);
+}
+
+int napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+{
+	if (netpoll_receive_skb(skb))
+		return NET_RX_DROP;
+
+	switch (__napi_gro_receive(napi, skb)) {
+	case -1:
+		return netif_receive_skb(skb);
+
+	case 1:
+		kfree_skb(skb);
+		break;
+	}
+
+	return NET_RX_SUCCESS;
+}
+EXPORT_SYMBOL(napi_gro_receive);
+
+void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
+{
+	__skb_pull(skb, skb_headlen(skb));
+	skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
+
+	napi->skb = skb;
+}
+EXPORT_SYMBOL(napi_reuse_skb);
+
+struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi,
+				  struct napi_gro_fraginfo *info)
+{
+	struct net_device *dev = napi->dev;
+	struct sk_buff *skb = napi->skb;
+
+	napi->skb = NULL;
+
+	if (!skb) {
+		skb = netdev_alloc_skb(dev, GRO_MAX_HEAD + NET_IP_ALIGN);
+		if (!skb)
+			goto out;
+
+		skb_reserve(skb, NET_IP_ALIGN);
+	}
+
+	BUG_ON(info->nr_frags > MAX_SKB_FRAGS);
+	skb_shinfo(skb)->nr_frags = info->nr_frags;
+	memcpy(skb_shinfo(skb)->frags, info->frags, sizeof(info->frags));
+
+	skb->data_len = info->len;
+	skb->len += info->len;
+	skb->truesize += info->len;
+
+	if (!pskb_may_pull(skb, ETH_HLEN)) {
+		napi_reuse_skb(napi, skb);
+		skb = NULL;
+		goto out;
+	}
+
+	skb->protocol = eth_type_trans(skb, dev);
+
+	skb->ip_summed = info->ip_summed;
+	skb->csum = info->csum;
+
+out:
+	return skb;
+}
+EXPORT_SYMBOL(napi_fraginfo_skb);
+
+int napi_gro_frags(struct napi_struct *napi, struct napi_gro_fraginfo *info)
+{
+	struct sk_buff *skb = napi_fraginfo_skb(napi, info);
+	int err = NET_RX_DROP;
+
+	if (!skb)
+		goto out;
+
+	if (netpoll_receive_skb(skb))
+		goto out;
+
+	err = NET_RX_SUCCESS;
+
+	switch (__napi_gro_receive(napi, skb)) {
+	case -1:
+		return netif_receive_skb(skb);
+
+	case 0:
+		goto out;
+	}
+
+	napi_reuse_skb(napi, skb);
+
+out:
+	return err;
+}
+EXPORT_SYMBOL(napi_gro_frags);
+
+static int process_backlog(struct napi_struct *napi, int quota)
+{
+	int work = 0;
+	struct softnet_data *queue = &__get_cpu_var(softnet_data);
+	unsigned long start_time = jiffies;
+
+	napi->weight = weight_p;
+	do {
+		struct sk_buff *skb;
+
+		local_irq_disable();
+		skb = __skb_dequeue(&queue->input_pkt_queue);
+		if (!skb) {
+			local_irq_enable();
+			napi_complete(napi);
+			goto out;
+		}
+		local_irq_enable();
+
+		napi_gro_receive(napi, skb);
+	} while (++work < quota && jiffies == start_time);
+
+	napi_gro_flush(napi);
+
+out:
+	return work;
+}
+
+/**
+ * __napi_schedule - schedule for receive
+ * @n: entry to schedule
+ *
+ * The entry's receive function will be scheduled to run
+ */
+void __napi_schedule(struct napi_struct *n)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	list_add_tail(&n->poll_list, &__get_cpu_var(softnet_data).poll_list);
+	__raise_softirq_irqoff(NET_RX_SOFTIRQ);
+	local_irq_restore(flags);
+}
+EXPORT_SYMBOL(__napi_schedule);
+
+void __napi_complete(struct napi_struct *n)
+{
+	BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
+	BUG_ON(n->gro_list);
+
+	list_del(&n->poll_list);
+	smp_mb__before_clear_bit();
+	clear_bit(NAPI_STATE_SCHED, &n->state);
+}
+EXPORT_SYMBOL(__napi_complete);
+
+void napi_complete(struct napi_struct *n)
+{
+	unsigned long flags;
+
+	/*
+	 * don't let napi dequeue from the cpu poll list
+	 * just in case its running on a different cpu
+	 */
+	if (unlikely(test_bit(NAPI_STATE_NPSVC, &n->state)))
+		return;
+
+	napi_gro_flush(n);
+	local_irq_save(flags);
+	__napi_complete(n);
+	local_irq_restore(flags);
+}
+EXPORT_SYMBOL(napi_complete);
+
+void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
+		    int (*poll)(struct napi_struct *, int), int weight)
+{
+	INIT_LIST_HEAD(&napi->poll_list);
+	napi->gro_list = NULL;
+	napi->skb = NULL;
+	napi->poll = poll;
+	napi->weight = weight;
+	list_add(&napi->dev_list, &dev->napi_list);
+	napi->dev = dev;
+#ifdef CONFIG_NETPOLL
+	spin_lock_init(&napi->poll_lock);
+	napi->poll_owner = -1;
+#endif
+	set_bit(NAPI_STATE_SCHED, &napi->state);
+}
+EXPORT_SYMBOL(netif_napi_add);
+
+void netif_napi_del(struct napi_struct *napi)
+{
+	struct sk_buff *skb, *next;
+
+	list_del_init(&napi->dev_list);
+	kfree_skb(napi->skb);
+
+	for (skb = napi->gro_list; skb; skb = next) {
+		next = skb->next;
+		skb->next = NULL;
+		kfree_skb(skb);
+	}
+
+	napi->gro_list = NULL;
+}
+EXPORT_SYMBOL(netif_napi_del);
+
+
+static void net_rx_action(struct softirq_action *h)
+{
+	struct list_head *list = &__get_cpu_var(softnet_data).poll_list;
+	unsigned long time_limit = jiffies + 2;
+	int budget = netdev_budget;
+	void *have;
+
+	local_irq_disable();
+
+	while (!list_empty(list)) {
+		struct napi_struct *n;
+		int work, weight;
+
+		/* If softirq window is exhuasted then punt.
+		 * Allow this to run for 2 jiffies since which will allow
+		 * an average latency of 1.5/HZ.
+		 */
+		if (unlikely(budget <= 0 || time_after(jiffies, time_limit)))
+			goto softnet_break;
+
+		local_irq_enable();
+
+		/* Even though interrupts have been re-enabled, this
+		 * access is safe because interrupts can only add new
+		 * entries to the tail of this list, and only ->poll()
+		 * calls can remove this head entry from the list.
+		 */
+		n = list_entry(list->next, struct napi_struct, poll_list);
+
+		have = netpoll_poll_lock(n);
+
+		weight = n->weight;
+
+		/* This NAPI_STATE_SCHED test is for avoiding a race
+		 * with netpoll's poll_napi().  Only the entity which
+		 * obtains the lock and sees NAPI_STATE_SCHED set will
+		 * actually make the ->poll() call.  Therefore we avoid
+		 * accidently calling ->poll() when NAPI is not scheduled.
+		 */
+		work = 0;
+		if (test_bit(NAPI_STATE_SCHED, &n->state))
+			work = n->poll(n, weight);
+
+		WARN_ON_ONCE(work > weight);
+
+		budget -= work;
+
+		local_irq_disable();
+
+		/* Drivers must not modify the NAPI state if they
+		 * consume the entire weight.  In such cases this code
+		 * still "owns" the NAPI instance and therefore can
+		 * move the instance around on the list at-will.
+		 */
+		if (unlikely(work == weight)) {
+			if (unlikely(napi_disable_pending(n)))
+				__napi_complete(n);
+			else
+				list_move_tail(&n->poll_list, list);
+		}
+
+		netpoll_poll_unlock(have);
+	}
+out:
+	local_irq_enable();
+
+#ifdef CONFIG_NET_DMA
+	/*
+	 * There may not be any more sk_buffs coming right now, so push
+	 * any pending DMA copies to hardware
+	 */
+	dma_issue_pending_all();
+#endif
+
+	return;
+
+softnet_break:
+	__get_cpu_var(netdev_rx_stat).time_squeeze++;
+	__raise_softirq_irqoff(NET_RX_SOFTIRQ);
+	goto out;
+}
+
+static gifconf_func_t * gifconf_list [NPROTO];
+
+/**
+ *	register_gifconf	-	register a SIOCGIF handler
+ *	@family: Address family
+ *	@gifconf: Function handler
+ *
+ *	Register protocol dependent address dumping routines. The handler
+ *	that is passed must not be freed or reused until it has been replaced
+ *	by another handler.
+ */
+int register_gifconf(unsigned int family, gifconf_func_t * gifconf)
+{
+	if (family >= NPROTO)
+		return -EINVAL;
+	gifconf_list[family] = gifconf;
+	return 0;
+}
+
+
+/*
+ *	Map an interface index to its name (SIOCGIFNAME)
+ */
+
+/*
+ *	We need this ioctl for efficient implementation of the
+ *	if_indextoname() function required by the IPv6 API.  Without
+ *	it, we would have to search all the interfaces to find a
+ *	match.  --pb
+ */
+
+static int dev_ifname(struct net *net, struct ifreq __user *arg)
+{
+	struct net_device *dev;
+	struct ifreq ifr;
+
+	/*
+	 *	Fetch the caller's info block.
+	 */
+
+	if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
+		return -EFAULT;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_index(net, ifr.ifr_ifindex);
+	if (!dev) {
+		read_unlock(&dev_base_lock);
+		return -ENODEV;
+	}
+
+	strcpy(ifr.ifr_name, dev->name);
+	read_unlock(&dev_base_lock);
+
+	if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
+		return -EFAULT;
+	return 0;
+}
+
+/*
+ *	Perform a SIOCGIFCONF call. This structure will change
+ *	size eventually, and there is nothing I can do about it.
+ *	Thus we will need a 'compatibility mode'.
+ */
+
+static int dev_ifconf(struct net *net, char __user *arg)
+{
+	struct ifconf ifc;
+	struct net_device *dev;
+	char __user *pos;
+	int len;
+	int total;
+	int i;
+
+	/*
+	 *	Fetch the caller's info block.
+	 */
+
+	if (copy_from_user(&ifc, arg, sizeof(struct ifconf)))
+		return -EFAULT;
+
+	pos = ifc.ifc_buf;
+	len = ifc.ifc_len;
+
+	/*
+	 *	Loop over the interfaces, and write an info block for each.
+	 */
+
+	total = 0;
+	for_each_netdev(net, dev) {
+		for (i = 0; i < NPROTO; i++) {
+			if (gifconf_list[i]) {
+				int done;
+				if (!pos)
+					done = gifconf_list[i](dev, NULL, 0);
+				else
+					done = gifconf_list[i](dev, pos + total,
+							       len - total);
+				if (done < 0)
+					return -EFAULT;
+				total += done;
+			}
+		}
+	}
+
+	/*
+	 *	All done.  Write the updated control block back to the caller.
+	 */
+	ifc.ifc_len = total;
+
+	/*
+	 * 	Both BSD and Solaris return 0 here, so we do too.
+	 */
+	return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0;
+}
+
+#ifdef CONFIG_PROC_FS
+/*
+ *	This is invoked by the /proc filesystem handler to display a device
+ *	in detail.
+ */
+void *dev_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(dev_base_lock)
+{
+	struct net *net = seq_file_net(seq);
+	loff_t off;
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	if (!*pos)
+		return SEQ_START_TOKEN;
+
+	off = 1;
+	for_each_netdev(net, dev)
+		if (off++ == *pos)
+			return dev;
+
+	return NULL;
+}
+
+void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct net *net = seq_file_net(seq);
+	++*pos;
+	return v == SEQ_START_TOKEN ?
+		first_net_device(net) : next_net_device((struct net_device *)v);
+}
+
+void dev_seq_stop(struct seq_file *seq, void *v)
+	__releases(dev_base_lock)
+{
+	read_unlock(&dev_base_lock);
+}
+
+static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
+{
+	const struct net_device_stats *stats = dev_get_stats(dev);
+
+	seq_printf(seq, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
+		   "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
+		   dev->name, stats->rx_bytes, stats->rx_packets,
+		   stats->rx_errors,
+		   stats->rx_dropped + stats->rx_missed_errors,
+		   stats->rx_fifo_errors,
+		   stats->rx_length_errors + stats->rx_over_errors +
+		    stats->rx_crc_errors + stats->rx_frame_errors,
+		   stats->rx_compressed, stats->multicast,
+		   stats->tx_bytes, stats->tx_packets,
+		   stats->tx_errors, stats->tx_dropped,
+		   stats->tx_fifo_errors, stats->collisions,
+		   stats->tx_carrier_errors +
+		    stats->tx_aborted_errors +
+		    stats->tx_window_errors +
+		    stats->tx_heartbeat_errors,
+		   stats->tx_compressed);
+}
+
+/*
+ *	Called from the PROCfs module. This now uses the new arbitrary sized
+ *	/proc/net interface to create /proc/net/dev
+ */
+static int dev_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == SEQ_START_TOKEN)
+		seq_puts(seq, "Inter-|   Receive                            "
+			      "                    |  Transmit\n"
+			      " face |bytes    packets errs drop fifo frame "
+			      "compressed multicast|bytes    packets errs "
+			      "drop fifo colls carrier compressed\n");
+	else
+		dev_seq_printf_stats(seq, v);
+	return 0;
+}
+
+static struct netif_rx_stats *softnet_get_online(loff_t *pos)
+{
+	struct netif_rx_stats *rc = NULL;
+
+	while (*pos < nr_cpu_ids)
+		if (cpu_online(*pos)) {
+			rc = &per_cpu(netdev_rx_stat, *pos);
+			break;
+		} else
+			++*pos;
+	return rc;
+}
+
+static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	return softnet_get_online(pos);
+}
+
+static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	return softnet_get_online(pos);
+}
+
+static void softnet_seq_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int softnet_seq_show(struct seq_file *seq, void *v)
+{
+	struct netif_rx_stats *s = v;
+
+	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+		   s->total, s->dropped, s->time_squeeze, 0,
+		   0, 0, 0, 0, /* was fastroute */
+		   s->cpu_collision );
+	return 0;
+}
+
+static const struct seq_operations dev_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = dev_seq_show,
+};
+
+static int dev_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &dev_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations dev_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = dev_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+static const struct seq_operations softnet_seq_ops = {
+	.start = softnet_seq_start,
+	.next  = softnet_seq_next,
+	.stop  = softnet_seq_stop,
+	.show  = softnet_seq_show,
+};
+
+static int softnet_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &softnet_seq_ops);
+}
+
+static const struct file_operations softnet_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = softnet_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
+
+static void *ptype_get_idx(loff_t pos)
+{
+	struct packet_type *pt = NULL;
+	loff_t i = 0;
+	int t;
+
+	list_for_each_entry_rcu(pt, &ptype_all, list) {
+		if (i == pos)
+			return pt;
+		++i;
+	}
+
+	for (t = 0; t < PTYPE_HASH_SIZE; t++) {
+		list_for_each_entry_rcu(pt, &ptype_base[t], list) {
+			if (i == pos)
+				return pt;
+			++i;
+		}
+	}
+	return NULL;
+}
+
+static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(RCU)
+{
+	rcu_read_lock();
+	return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
+}
+
+static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct packet_type *pt;
+	struct list_head *nxt;
+	int hash;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN)
+		return ptype_get_idx(0);
+
+	pt = v;
+	nxt = pt->list.next;
+	if (pt->type == htons(ETH_P_ALL)) {
+		if (nxt != &ptype_all)
+			goto found;
+		hash = 0;
+		nxt = ptype_base[0].next;
+	} else
+		hash = ntohs(pt->type) & PTYPE_HASH_MASK;
+
+	while (nxt == &ptype_base[hash]) {
+		if (++hash >= PTYPE_HASH_SIZE)
+			return NULL;
+		nxt = ptype_base[hash].next;
+	}
+found:
+	return list_entry(nxt, struct packet_type, list);
+}
+
+static void ptype_seq_stop(struct seq_file *seq, void *v)
+	__releases(RCU)
+{
+	rcu_read_unlock();
+}
+
+static int ptype_seq_show(struct seq_file *seq, void *v)
+{
+	struct packet_type *pt = v;
+
+	if (v == SEQ_START_TOKEN)
+		seq_puts(seq, "Type Device      Function\n");
+	else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
+		if (pt->type == htons(ETH_P_ALL))
+			seq_puts(seq, "ALL ");
+		else
+			seq_printf(seq, "%04x", ntohs(pt->type));
+
+		seq_printf(seq, " %-8s %pF\n",
+			   pt->dev ? pt->dev->name : "", pt->func);
+	}
+
+	return 0;
+}
+
+static const struct seq_operations ptype_seq_ops = {
+	.start = ptype_seq_start,
+	.next  = ptype_seq_next,
+	.stop  = ptype_seq_stop,
+	.show  = ptype_seq_show,
+};
+
+static int ptype_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &ptype_seq_ops,
+			sizeof(struct seq_net_private));
+}
+
+static const struct file_operations ptype_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = ptype_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+
+static int __net_init dev_proc_net_init(struct net *net)
+{
+	int rc = -ENOMEM;
+
+	if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
+		goto out;
+	if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
+		goto out_dev;
+	if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
+		goto out_softnet;
+
+	if (wext_proc_init(net))
+		goto out_ptype;
+	rc = 0;
+out:
+	return rc;
+out_ptype:
+	proc_net_remove(net, "ptype");
+out_softnet:
+	proc_net_remove(net, "softnet_stat");
+out_dev:
+	proc_net_remove(net, "dev");
+	goto out;
+}
+
+static void __net_exit dev_proc_net_exit(struct net *net)
+{
+	wext_proc_exit(net);
+
+	proc_net_remove(net, "ptype");
+	proc_net_remove(net, "softnet_stat");
+	proc_net_remove(net, "dev");
+}
+
+static struct pernet_operations __net_initdata dev_proc_ops = {
+	.init = dev_proc_net_init,
+	.exit = dev_proc_net_exit,
+};
+
+static int __init dev_proc_init(void)
+{
+	return register_pernet_subsys(&dev_proc_ops);
+}
+#else
+#define dev_proc_init() 0
+#endif	/* CONFIG_PROC_FS */
+
+
+/**
+ *	netdev_set_master	-	set up master/slave pair
+ *	@slave: slave device
+ *	@master: new master device
+ *
+ *	Changes the master device of the slave. Pass %NULL to break the
+ *	bonding. The caller must hold the RTNL semaphore. On a failure
+ *	a negative errno code is returned. On success the reference counts
+ *	are adjusted, %RTM_NEWLINK is sent to the routing socket and the
+ *	function returns zero.
+ */
+int netdev_set_master(struct net_device *slave, struct net_device *master)
+{
+	struct net_device *old = slave->master;
+
+	ASSERT_RTNL();
+
+	if (master) {
+		if (old)
+			return -EBUSY;
+		dev_hold(master);
+	}
+
+	slave->master = master;
+
+	synchronize_net();
+
+	if (old)
+		dev_put(old);
+
+	if (master)
+		slave->flags |= IFF_SLAVE;
+	else
+		slave->flags &= ~IFF_SLAVE;
+
+	rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE);
+	return 0;
+}
+
+static void dev_change_rx_flags(struct net_device *dev, int flags)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	if ((dev->flags & IFF_UP) && ops->ndo_change_rx_flags)
+		ops->ndo_change_rx_flags(dev, flags);
+}
+
+static int __dev_set_promiscuity(struct net_device *dev, int inc)
+{
+	unsigned short old_flags = dev->flags;
+	uid_t uid;
+	gid_t gid;
+
+	ASSERT_RTNL();
+
+	dev->flags |= IFF_PROMISC;
+	dev->promiscuity += inc;
+	if (dev->promiscuity == 0) {
+		/*
+		 * Avoid overflow.
+		 * If inc causes overflow, untouch promisc and return error.
+		 */
+		if (inc < 0)
+			dev->flags &= ~IFF_PROMISC;
+		else {
+			dev->promiscuity -= inc;
+			printk(KERN_WARNING "%s: promiscuity touches roof, "
+				"set promiscuity failed, promiscuity feature "
+				"of device might be broken.\n", dev->name);
+			return -EOVERFLOW;
+		}
+	}
+	if (dev->flags != old_flags) {
+		printk(KERN_INFO "device %s %s promiscuous mode\n",
+		       dev->name, (dev->flags & IFF_PROMISC) ? "entered" :
+							       "left");
+		if (audit_enabled) {
+			current_uid_gid(&uid, &gid);
+			audit_log(current->audit_context, GFP_ATOMIC,
+				AUDIT_ANOM_PROMISCUOUS,
+				"dev=%s prom=%d old_prom=%d auid=%u uid=%u gid=%u ses=%u",
+				dev->name, (dev->flags & IFF_PROMISC),
+				(old_flags & IFF_PROMISC),
+				audit_get_loginuid(current),
+				uid, gid,
+				audit_get_sessionid(current));
+		}
+
+		dev_change_rx_flags(dev, IFF_PROMISC);
+	}
+	return 0;
+}
+
+/**
+ *	dev_set_promiscuity	- update promiscuity count on a device
+ *	@dev: device
+ *	@inc: modifier
+ *
+ *	Add or remove promiscuity from a device. While the count in the device
+ *	remains above zero the interface remains promiscuous. Once it hits zero
+ *	the device reverts back to normal filtering operation. A negative inc
+ *	value is used to drop promiscuity on the device.
+ *	Return 0 if successful or a negative errno code on error.
+ */
+int dev_set_promiscuity(struct net_device *dev, int inc)
+{
+	unsigned short old_flags = dev->flags;
+	int err;
+
+	err = __dev_set_promiscuity(dev, inc);
+	if (err < 0)
+		return err;
+	if (dev->flags != old_flags)
+		dev_set_rx_mode(dev);
+	return err;
+}
+
+/**
+ *	dev_set_allmulti	- update allmulti count on a device
+ *	@dev: device
+ *	@inc: modifier
+ *
+ *	Add or remove reception of all multicast frames to a device. While the
+ *	count in the device remains above zero the interface remains listening
+ *	to all interfaces. Once it hits zero the device reverts back to normal
+ *	filtering operation. A negative @inc value is used to drop the counter
+ *	when releasing a resource needing all multicasts.
+ *	Return 0 if successful or a negative errno code on error.
+ */
+
+int dev_set_allmulti(struct net_device *dev, int inc)
+{
+	unsigned short old_flags = dev->flags;
+
+	ASSERT_RTNL();
+
+	dev->flags |= IFF_ALLMULTI;
+	dev->allmulti += inc;
+	if (dev->allmulti == 0) {
+		/*
+		 * Avoid overflow.
+		 * If inc causes overflow, untouch allmulti and return error.
+		 */
+		if (inc < 0)
+			dev->flags &= ~IFF_ALLMULTI;
+		else {
+			dev->allmulti -= inc;
+			printk(KERN_WARNING "%s: allmulti touches roof, "
+				"set allmulti failed, allmulti feature of "
+				"device might be broken.\n", dev->name);
+			return -EOVERFLOW;
+		}
+	}
+	if (dev->flags ^ old_flags) {
+		dev_change_rx_flags(dev, IFF_ALLMULTI);
+		dev_set_rx_mode(dev);
+	}
+	return 0;
+}
+
+/*
+ *	Upload unicast and multicast address lists to device and
+ *	configure RX filtering. When the device doesn't support unicast
+ *	filtering it is put in promiscuous mode while unicast addresses
+ *	are present.
+ */
+void __dev_set_rx_mode(struct net_device *dev)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	/* dev_open will call this function so the list will stay sane. */
+	if (!(dev->flags&IFF_UP))
+		return;
+
+	if (!netif_device_present(dev))
+		return;
+
+	if (ops->ndo_set_rx_mode)
+		ops->ndo_set_rx_mode(dev);
+	else {
+		/* Unicast addresses changes may only happen under the rtnl,
+		 * therefore calling __dev_set_promiscuity here is safe.
+		 */
+		if (dev->uc_count > 0 && !dev->uc_promisc) {
+			__dev_set_promiscuity(dev, 1);
+			dev->uc_promisc = 1;
+		} else if (dev->uc_count == 0 && dev->uc_promisc) {
+			__dev_set_promiscuity(dev, -1);
+			dev->uc_promisc = 0;
+		}
+
+		if (ops->ndo_set_multicast_list)
+			ops->ndo_set_multicast_list(dev);
+	}
+}
+
+void dev_set_rx_mode(struct net_device *dev)
+{
+	netif_addr_lock_bh(dev);
+	__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+}
+
+int __dev_addr_delete(struct dev_addr_list **list, int *count,
+		      void *addr, int alen, int glbl)
+{
+	struct dev_addr_list *da;
+
+	for (; (da = *list) != NULL; list = &da->next) {
+		if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+		    alen == da->da_addrlen) {
+			if (glbl) {
+				int old_glbl = da->da_gusers;
+				da->da_gusers = 0;
+				if (old_glbl == 0)
+					break;
+			}
+			if (--da->da_users)
+				return 0;
+
+			*list = da->next;
+			kfree(da);
+			(*count)--;
+			return 0;
+		}
+	}
+	return -ENOENT;
+}
+
+int __dev_addr_add(struct dev_addr_list **list, int *count,
+		   void *addr, int alen, int glbl)
+{
+	struct dev_addr_list *da;
+
+	for (da = *list; da != NULL; da = da->next) {
+		if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+		    da->da_addrlen == alen) {
+			if (glbl) {
+				int old_glbl = da->da_gusers;
+				da->da_gusers = 1;
+				if (old_glbl)
+					return 0;
+			}
+			da->da_users++;
+			return 0;
+		}
+	}
+
+	da = kzalloc(sizeof(*da), GFP_ATOMIC);
+	if (da == NULL)
+		return -ENOMEM;
+	memcpy(da->da_addr, addr, alen);
+	da->da_addrlen = alen;
+	da->da_users = 1;
+	da->da_gusers = glbl ? 1 : 0;
+	da->next = *list;
+	*list = da;
+	(*count)++;
+	return 0;
+}
+
+/**
+ *	dev_unicast_delete	- Release secondary unicast address.
+ *	@dev: device
+ *	@addr: address to delete
+ *	@alen: length of @addr
+ *
+ *	Release reference to a secondary unicast address and remove it
+ *	from the device if the reference count drops to zero.
+ *
+ * 	The caller must hold the rtnl_mutex.
+ */
+int dev_unicast_delete(struct net_device *dev, void *addr, int alen)
+{
+	int err;
+
+	ASSERT_RTNL();
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
+	if (!err)
+		__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+EXPORT_SYMBOL(dev_unicast_delete);
+
+/**
+ *	dev_unicast_add		- add a secondary unicast address
+ *	@dev: device
+ *	@addr: address to add
+ *	@alen: length of @addr
+ *
+ *	Add a secondary unicast address to the device or increase
+ *	the reference count if it already exists.
+ *
+ *	The caller must hold the rtnl_mutex.
+ */
+int dev_unicast_add(struct net_device *dev, void *addr, int alen)
+{
+	int err;
+
+	ASSERT_RTNL();
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
+	if (!err)
+		__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+EXPORT_SYMBOL(dev_unicast_add);
+
+int __dev_addr_sync(struct dev_addr_list **to, int *to_count,
+		    struct dev_addr_list **from, int *from_count)
+{
+	struct dev_addr_list *da, *next;
+	int err = 0;
+
+	da = *from;
+	while (da != NULL) {
+		next = da->next;
+		if (!da->da_synced) {
+			err = __dev_addr_add(to, to_count,
+					     da->da_addr, da->da_addrlen, 0);
+			if (err < 0)
+				break;
+			da->da_synced = 1;
+			da->da_users++;
+		} else if (da->da_users == 1) {
+			__dev_addr_delete(to, to_count,
+					  da->da_addr, da->da_addrlen, 0);
+			__dev_addr_delete(from, from_count,
+					  da->da_addr, da->da_addrlen, 0);
+		}
+		da = next;
+	}
+	return err;
+}
+
+void __dev_addr_unsync(struct dev_addr_list **to, int *to_count,
+		       struct dev_addr_list **from, int *from_count)
+{
+	struct dev_addr_list *da, *next;
+
+	da = *from;
+	while (da != NULL) {
+		next = da->next;
+		if (da->da_synced) {
+			__dev_addr_delete(to, to_count,
+					  da->da_addr, da->da_addrlen, 0);
+			da->da_synced = 0;
+			__dev_addr_delete(from, from_count,
+					  da->da_addr, da->da_addrlen, 0);
+		}
+		da = next;
+	}
+}
+
+/**
+ *	dev_unicast_sync - Synchronize device's unicast list to another device
+ *	@to: destination device
+ *	@from: source device
+ *
+ *	Add newly added addresses to the destination device and release
+ *	addresses that have no users left. The source device must be
+ *	locked by netif_tx_lock_bh.
+ *
+ *	This function is intended to be called from the dev->set_rx_mode
+ *	function of layered software devices.
+ */
+int dev_unicast_sync(struct net_device *to, struct net_device *from)
+{
+	int err = 0;
+
+	netif_addr_lock_bh(to);
+	err = __dev_addr_sync(&to->uc_list, &to->uc_count,
+			      &from->uc_list, &from->uc_count);
+	if (!err)
+		__dev_set_rx_mode(to);
+	netif_addr_unlock_bh(to);
+	return err;
+}
+EXPORT_SYMBOL(dev_unicast_sync);
+
+/**
+ *	dev_unicast_unsync - Remove synchronized addresses from the destination device
+ *	@to: destination device
+ *	@from: source device
+ *
+ *	Remove all addresses that were added to the destination device by
+ *	dev_unicast_sync(). This function is intended to be called from the
+ *	dev->stop function of layered software devices.
+ */
+void dev_unicast_unsync(struct net_device *to, struct net_device *from)
+{
+	netif_addr_lock_bh(from);
+	netif_addr_lock(to);
+
+	__dev_addr_unsync(&to->uc_list, &to->uc_count,
+			  &from->uc_list, &from->uc_count);
+	__dev_set_rx_mode(to);
+
+	netif_addr_unlock(to);
+	netif_addr_unlock_bh(from);
+}
+EXPORT_SYMBOL(dev_unicast_unsync);
+
+static void __dev_addr_discard(struct dev_addr_list **list)
+{
+	struct dev_addr_list *tmp;
+
+	while (*list != NULL) {
+		tmp = *list;
+		*list = tmp->next;
+		if (tmp->da_users > tmp->da_gusers)
+			printk("__dev_addr_discard: address leakage! "
+			       "da_users=%d\n", tmp->da_users);
+		kfree(tmp);
+	}
+}
+
+static void dev_addr_discard(struct net_device *dev)
+{
+	netif_addr_lock_bh(dev);
+
+	__dev_addr_discard(&dev->uc_list);
+	dev->uc_count = 0;
+
+	__dev_addr_discard(&dev->mc_list);
+	dev->mc_count = 0;
+
+	netif_addr_unlock_bh(dev);
+}
+
+/**
+ *	dev_get_flags - get flags reported to userspace
+ *	@dev: device
+ *
+ *	Get the combination of flag bits exported through APIs to userspace.
+ */
+unsigned dev_get_flags(const struct net_device *dev)
+{
+	unsigned flags;
+
+	flags = (dev->flags & ~(IFF_PROMISC |
+				IFF_ALLMULTI |
+				IFF_RUNNING |
+				IFF_LOWER_UP |
+				IFF_DORMANT)) |
+		(dev->gflags & (IFF_PROMISC |
+				IFF_ALLMULTI));
+
+	if (netif_running(dev)) {
+		if (netif_oper_up(dev))
+			flags |= IFF_RUNNING;
+		if (netif_carrier_ok(dev))
+			flags |= IFF_LOWER_UP;
+		if (netif_dormant(dev))
+			flags |= IFF_DORMANT;
+	}
+
+	return flags;
+}
+
+/**
+ *	dev_change_flags - change device settings
+ *	@dev: device
+ *	@flags: device state flags
+ *
+ *	Change settings on device based state flags. The flags are
+ *	in the userspace exported format.
+ */
+int dev_change_flags(struct net_device *dev, unsigned flags)
+{
+	int ret, changes;
+	int old_flags = dev->flags;
+
+	ASSERT_RTNL();
+
+	/*
+	 *	Set the flags on our device.
+	 */
+
+	dev->flags = (flags & (IFF_DEBUG | IFF_NOTRAILERS | IFF_NOARP |
+			       IFF_DYNAMIC | IFF_MULTICAST | IFF_PORTSEL |
+			       IFF_AUTOMEDIA)) |
+		     (dev->flags & (IFF_UP | IFF_VOLATILE | IFF_PROMISC |
+				    IFF_ALLMULTI));
+
+	/*
+	 *	Load in the correct multicast list now the flags have changed.
+	 */
+
+	if ((old_flags ^ flags) & IFF_MULTICAST)
+		dev_change_rx_flags(dev, IFF_MULTICAST);
+
+	dev_set_rx_mode(dev);
+
+	/*
+	 *	Have we downed the interface. We handle IFF_UP ourselves
+	 *	according to user attempts to set it, rather than blindly
+	 *	setting it.
+	 */
+
+	ret = 0;
+	if ((old_flags ^ flags) & IFF_UP) {	/* Bit is different  ? */
+		ret = ((old_flags & IFF_UP) ? dev_close : dev_open)(dev);
+
+		if (!ret)
+			dev_set_rx_mode(dev);
+	}
+
+	if (dev->flags & IFF_UP &&
+	    ((old_flags ^ dev->flags) &~ (IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
+					  IFF_VOLATILE)))
+		call_netdevice_notifiers(NETDEV_CHANGE, dev);
+
+	if ((flags ^ dev->gflags) & IFF_PROMISC) {
+		int inc = (flags & IFF_PROMISC) ? +1 : -1;
+		dev->gflags ^= IFF_PROMISC;
+		dev_set_promiscuity(dev, inc);
+	}
+
+	/* NOTE: order of synchronization of IFF_PROMISC and IFF_ALLMULTI
+	   is important. Some (broken) drivers set IFF_PROMISC, when
+	   IFF_ALLMULTI is requested not asking us and not reporting.
+	 */
+	if ((flags ^ dev->gflags) & IFF_ALLMULTI) {
+		int inc = (flags & IFF_ALLMULTI) ? +1 : -1;
+		dev->gflags ^= IFF_ALLMULTI;
+		dev_set_allmulti(dev, inc);
+	}
+
+	/* Exclude state transition flags, already notified */
+	changes = (old_flags ^ dev->flags) & ~(IFF_UP | IFF_RUNNING);
+	if (changes)
+		rtmsg_ifinfo(RTM_NEWLINK, dev, changes);
+
+	return ret;
+}
+
+/**
+ *	dev_set_mtu - Change maximum transfer unit
+ *	@dev: device
+ *	@new_mtu: new transfer unit
+ *
+ *	Change the maximum transfer size of the network device.
+ */
+int dev_set_mtu(struct net_device *dev, int new_mtu)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int err;
+
+	if (new_mtu == dev->mtu)
+		return 0;
+
+	/*	MTU must be positive.	 */
+	if (new_mtu < 0)
+		return -EINVAL;
+
+	if (!netif_device_present(dev))
+		return -ENODEV;
+
+	err = 0;
+	if (ops->ndo_change_mtu)
+		err = ops->ndo_change_mtu(dev, new_mtu);
+	else
+		dev->mtu = new_mtu;
+
+	if (!err && dev->flags & IFF_UP)
+		call_netdevice_notifiers(NETDEV_CHANGEMTU, dev);
+	return err;
+}
+
+/**
+ *	dev_set_mac_address - Change Media Access Control Address
+ *	@dev: device
+ *	@sa: new address
+ *
+ *	Change the hardware (MAC) address of the device
+ */
+int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int err;
+
+	if (!ops->ndo_set_mac_address)
+		return -EOPNOTSUPP;
+	if (sa->sa_family != dev->type)
+		return -EINVAL;
+	if (!netif_device_present(dev))
+		return -ENODEV;
+	err = ops->ndo_set_mac_address(dev, sa);
+	if (!err)
+		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+	return err;
+}
+
+/*
+ *	Perform the SIOCxIFxxx calls, inside read_lock(dev_base_lock)
+ */
+static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cmd)
+{
+	int err;
+	struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
+
+	if (!dev)
+		return -ENODEV;
+
+	switch (cmd) {
+		case SIOCGIFFLAGS:	/* Get interface flags */
+			ifr->ifr_flags = dev_get_flags(dev);
+			return 0;
+
+		case SIOCGIFMETRIC:	/* Get the metric on the interface
+					   (currently unused) */
+			ifr->ifr_metric = 0;
+			return 0;
+
+		case SIOCGIFMTU:	/* Get the MTU of a device */
+			ifr->ifr_mtu = dev->mtu;
+			return 0;
+
+		case SIOCGIFHWADDR:
+			if (!dev->addr_len)
+				memset(ifr->ifr_hwaddr.sa_data, 0, sizeof ifr->ifr_hwaddr.sa_data);
+			else
+				memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr,
+				       min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
+			ifr->ifr_hwaddr.sa_family = dev->type;
+			return 0;
+
+		case SIOCGIFSLAVE:
+			err = -EINVAL;
+			break;
+
+		case SIOCGIFMAP:
+			ifr->ifr_map.mem_start = dev->mem_start;
+			ifr->ifr_map.mem_end   = dev->mem_end;
+			ifr->ifr_map.base_addr = dev->base_addr;
+			ifr->ifr_map.irq       = dev->irq;
+			ifr->ifr_map.dma       = dev->dma;
+			ifr->ifr_map.port      = dev->if_port;
+			return 0;
+
+		case SIOCGIFINDEX:
+			ifr->ifr_ifindex = dev->ifindex;
+			return 0;
+
+		case SIOCGIFTXQLEN:
+			ifr->ifr_qlen = dev->tx_queue_len;
+			return 0;
+
+		default:
+			/* dev_ioctl() should ensure this case
+			 * is never reached
+			 */
+			WARN_ON(1);
+			err = -EINVAL;
+			break;
+
+	}
+	return err;
+}
+
+/*
+ *	Perform the SIOCxIFxxx calls, inside rtnl_lock()
+ */
+static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
+{
+	int err;
+	struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
+	const struct net_device_ops *ops;
+
+	if (!dev)
+		return -ENODEV;
+
+	ops = dev->netdev_ops;
+
+	switch (cmd) {
+		case SIOCSIFFLAGS:	/* Set interface flags */
+			return dev_change_flags(dev, ifr->ifr_flags);
+
+		case SIOCSIFMETRIC:	/* Set the metric on the interface
+					   (currently unused) */
+			return -EOPNOTSUPP;
+
+		case SIOCSIFMTU:	/* Set the MTU of a device */
+			return dev_set_mtu(dev, ifr->ifr_mtu);
+
+		case SIOCSIFHWADDR:
+			return dev_set_mac_address(dev, &ifr->ifr_hwaddr);
+
+		case SIOCSIFHWBROADCAST:
+			if (ifr->ifr_hwaddr.sa_family != dev->type)
+				return -EINVAL;
+			memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
+			       min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
+			call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+			return 0;
+
+		case SIOCSIFMAP:
+			if (ops->ndo_set_config) {
+				if (!netif_device_present(dev))
+					return -ENODEV;
+				return ops->ndo_set_config(dev, &ifr->ifr_map);
+			}
+			return -EOPNOTSUPP;
+
+		case SIOCADDMULTI:
+			if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+			    ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
+				return -EINVAL;
+			if (!netif_device_present(dev))
+				return -ENODEV;
+			return dev_mc_add(dev, ifr->ifr_hwaddr.sa_data,
+					  dev->addr_len, 1);
+
+		case SIOCDELMULTI:
+			if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+			    ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
+				return -EINVAL;
+			if (!netif_device_present(dev))
+				return -ENODEV;
+			return dev_mc_delete(dev, ifr->ifr_hwaddr.sa_data,
+					     dev->addr_len, 1);
+
+		case SIOCSIFTXQLEN:
+			if (ifr->ifr_qlen < 0)
+				return -EINVAL;
+			dev->tx_queue_len = ifr->ifr_qlen;
+			return 0;
+
+		case SIOCSIFNAME:
+			ifr->ifr_newname[IFNAMSIZ-1] = '\0';
+			return dev_change_name(dev, ifr->ifr_newname);
+
+		/*
+		 *	Unknown or private ioctl
+		 */
+
+		default:
+			if ((cmd >= SIOCDEVPRIVATE &&
+			    cmd <= SIOCDEVPRIVATE + 15) ||
+			    cmd == SIOCBONDENSLAVE ||
+			    cmd == SIOCBONDRELEASE ||
+			    cmd == SIOCBONDSETHWADDR ||
+			    cmd == SIOCBONDSLAVEINFOQUERY ||
+			    cmd == SIOCBONDINFOQUERY ||
+			    cmd == SIOCBONDCHANGEACTIVE ||
+			    cmd == SIOCGMIIPHY ||
+			    cmd == SIOCGMIIREG ||
+			    cmd == SIOCSMIIREG ||
+			    cmd == SIOCBRADDIF ||
+			    cmd == SIOCBRDELIF ||
+			    cmd == SIOCWANDEV) {
+				err = -EOPNOTSUPP;
+				if (ops->ndo_do_ioctl) {
+					if (netif_device_present(dev))
+						err = ops->ndo_do_ioctl(dev, ifr, cmd);
+					else
+						err = -ENODEV;
+				}
+			} else
+				err = -EINVAL;
+
+	}
+	return err;
+}
+
+/*
+ *	This function handles all "interface"-type I/O control requests. The actual
+ *	'doing' part of this is dev_ifsioc above.
+ */
+
+/**
+ *	dev_ioctl	-	network device ioctl
+ *	@net: the applicable net namespace
+ *	@cmd: command to issue
+ *	@arg: pointer to a struct ifreq in user space
+ *
+ *	Issue ioctl functions to devices. This is normally called by the
+ *	user space syscall interfaces but can sometimes be useful for
+ *	other purposes. The return value is the return from the syscall if
+ *	positive or a negative errno code on error.
+ */
+
+int dev_ioctl(struct net *net, unsigned int cmd, void __user *arg)
+{
+	struct ifreq ifr;
+	int ret;
+	char *colon;
+
+	/* One special case: SIOCGIFCONF takes ifconf argument
+	   and requires shared lock, because it sleeps writing
+	   to user space.
+	 */
+
+	if (cmd == SIOCGIFCONF) {
+		rtnl_lock();
+		ret = dev_ifconf(net, (char __user *) arg);
+		rtnl_unlock();
+		return ret;
+	}
+	if (cmd == SIOCGIFNAME)
+		return dev_ifname(net, (struct ifreq __user *)arg);
+
+	if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
+		return -EFAULT;
+
+	ifr.ifr_name[IFNAMSIZ-1] = 0;
+
+	colon = strchr(ifr.ifr_name, ':');
+	if (colon)
+		*colon = 0;
+
+	/*
+	 *	See which interface the caller is talking about.
+	 */
+
+	switch (cmd) {
+		/*
+		 *	These ioctl calls:
+		 *	- can be done by all.
+		 *	- atomic and do not require locking.
+		 *	- return a value
+		 */
+		case SIOCGIFFLAGS:
+		case SIOCGIFMETRIC:
+		case SIOCGIFMTU:
+		case SIOCGIFHWADDR:
+		case SIOCGIFSLAVE:
+		case SIOCGIFMAP:
+		case SIOCGIFINDEX:
+		case SIOCGIFTXQLEN:
+			dev_load(net, ifr.ifr_name);
+			read_lock(&dev_base_lock);
+			ret = dev_ifsioc_locked(net, &ifr, cmd);
+			read_unlock(&dev_base_lock);
+			if (!ret) {
+				if (colon)
+					*colon = ':';
+				if (copy_to_user(arg, &ifr,
+						 sizeof(struct ifreq)))
+					ret = -EFAULT;
+			}
+			return ret;
+
+		case SIOCETHTOOL:
+			dev_load(net, ifr.ifr_name);
+			rtnl_lock();
+			ret = dev_ethtool(net, &ifr);
+			rtnl_unlock();
+			if (!ret) {
+				if (colon)
+					*colon = ':';
+				if (copy_to_user(arg, &ifr,
+						 sizeof(struct ifreq)))
+					ret = -EFAULT;
+			}
+			return ret;
+
+		/*
+		 *	These ioctl calls:
+		 *	- require superuser power.
+		 *	- require strict serialization.
+		 *	- return a value
+		 */
+		case SIOCGMIIPHY:
+		case SIOCGMIIREG:
+		case SIOCSIFNAME:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			dev_load(net, ifr.ifr_name);
+			rtnl_lock();
+			ret = dev_ifsioc(net, &ifr, cmd);
+			rtnl_unlock();
+			if (!ret) {
+				if (colon)
+					*colon = ':';
+				if (copy_to_user(arg, &ifr,
+						 sizeof(struct ifreq)))
+					ret = -EFAULT;
+			}
+			return ret;
+
+		/*
+		 *	These ioctl calls:
+		 *	- require superuser power.
+		 *	- require strict serialization.
+		 *	- do not return a value
+		 */
+		case SIOCSIFFLAGS:
+		case SIOCSIFMETRIC:
+		case SIOCSIFMTU:
+		case SIOCSIFMAP:
+		case SIOCSIFHWADDR:
+		case SIOCSIFSLAVE:
+		case SIOCADDMULTI:
+		case SIOCDELMULTI:
+		case SIOCSIFHWBROADCAST:
+		case SIOCSIFTXQLEN:
+		case SIOCSMIIREG:
+		case SIOCBONDENSLAVE:
+		case SIOCBONDRELEASE:
+		case SIOCBONDSETHWADDR:
+		case SIOCBONDCHANGEACTIVE:
+		case SIOCBRADDIF:
+		case SIOCBRDELIF:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			/* fall through */
+		case SIOCBONDSLAVEINFOQUERY:
+		case SIOCBONDINFOQUERY:
+			dev_load(net, ifr.ifr_name);
+			rtnl_lock();
+			ret = dev_ifsioc(net, &ifr, cmd);
+			rtnl_unlock();
+			return ret;
+
+		case SIOCGIFMEM:
+			/* Get the per device memory space. We can add this but
+			 * currently do not support it */
+		case SIOCSIFMEM:
+			/* Set the per device memory buffer space.
+			 * Not applicable in our case */
+		case SIOCSIFLINK:
+			return -EINVAL;
+
+		/*
+		 *	Unknown or private ioctl.
+		 */
+		default:
+			if (cmd == SIOCWANDEV ||
+			    (cmd >= SIOCDEVPRIVATE &&
+			     cmd <= SIOCDEVPRIVATE + 15)) {
+				dev_load(net, ifr.ifr_name);
+				rtnl_lock();
+				ret = dev_ifsioc(net, &ifr, cmd);
+				rtnl_unlock();
+				if (!ret && copy_to_user(arg, &ifr,
+							 sizeof(struct ifreq)))
+					ret = -EFAULT;
+				return ret;
+			}
+			/* Take care of Wireless Extensions */
+			if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)
+				return wext_handle_ioctl(net, &ifr, cmd, arg);
+			return -EINVAL;
+	}
+}
+
+
+/**
+ *	dev_new_index	-	allocate an ifindex
+ *	@net: the applicable net namespace
+ *
+ *	Returns a suitable unique value for a new device interface
+ *	number.  The caller must hold the rtnl semaphore or the
+ *	dev_base_lock to be sure it remains unique.
+ */
+static int dev_new_index(struct net *net)
+{
+	static int ifindex;
+	for (;;) {
+		if (++ifindex <= 0)
+			ifindex = 1;
+		if (!__dev_get_by_index(net, ifindex))
+			return ifindex;
+	}
+}
+
+/* Delayed registration/unregisteration */
+static LIST_HEAD(net_todo_list);
+
+static void net_set_todo(struct net_device *dev)
+{
+	list_add_tail(&dev->todo_list, &net_todo_list);
+}
+
+static void rollback_registered(struct net_device *dev)
+{
+	BUG_ON(dev_boot_phase);
+	ASSERT_RTNL();
+
+	/* Some devices call without registering for initialization unwind. */
+	if (dev->reg_state == NETREG_UNINITIALIZED) {
+		printk(KERN_DEBUG "unregister_netdevice: device %s/%p never "
+				  "was registered\n", dev->name, dev);
+
+		WARN_ON(1);
+		return;
+	}
+
+	BUG_ON(dev->reg_state != NETREG_REGISTERED);
+
+	/* If device is running, close it first. */
+	dev_close(dev);
+
+	/* And unlink it from device chain. */
+	unlist_netdevice(dev);
+
+	dev->reg_state = NETREG_UNREGISTERING;
+
+	synchronize_net();
+
+	/* Shutdown queueing discipline. */
+	dev_shutdown(dev);
+
+
+	/* Notify protocols, that we are about to destroy
+	   this device. They should clean all the things.
+	*/
+	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+	/*
+	 *	Flush the unicast and multicast chains
+	 */
+	dev_addr_discard(dev);
+
+	if (dev->netdev_ops->ndo_uninit)
+		dev->netdev_ops->ndo_uninit(dev);
+
+	/* Notifier chain MUST detach us from master device. */
+	WARN_ON(dev->master);
+
+	/* Remove entries from kobject tree */
+	netdev_unregister_kobject(dev);
+
+	synchronize_net();
+
+	dev_put(dev);
+}
+
+static void __netdev_init_queue_locks_one(struct net_device *dev,
+					  struct netdev_queue *dev_queue,
+					  void *_unused)
+{
+	spin_lock_init(&dev_queue->_xmit_lock);
+	netdev_set_xmit_lockdep_class(&dev_queue->_xmit_lock, dev->type);
+	dev_queue->xmit_lock_owner = -1;
+}
+
+static void netdev_init_queue_locks(struct net_device *dev)
+{
+	netdev_for_each_tx_queue(dev, __netdev_init_queue_locks_one, NULL);
+	__netdev_init_queue_locks_one(dev, &dev->rx_queue, NULL);
+}
+
+unsigned long netdev_fix_features(unsigned long features, const char *name)
+{
+	/* Fix illegal SG+CSUM combinations. */
+	if ((features & NETIF_F_SG) &&
+	    !(features & NETIF_F_ALL_CSUM)) {
+		if (name)
+			printk(KERN_NOTICE "%s: Dropping NETIF_F_SG since no "
+			       "checksum feature.\n", name);
+		features &= ~NETIF_F_SG;
+	}
+
+	/* TSO requires that SG is present as well. */
+	if ((features & NETIF_F_TSO) && !(features & NETIF_F_SG)) {
+		if (name)
+			printk(KERN_NOTICE "%s: Dropping NETIF_F_TSO since no "
+			       "SG feature.\n", name);
+		features &= ~NETIF_F_TSO;
+	}
+
+	if (features & NETIF_F_UFO) {
+		if (!(features & NETIF_F_GEN_CSUM)) {
+			if (name)
+				printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
+				       "since no NETIF_F_HW_CSUM feature.\n",
+				       name);
+			features &= ~NETIF_F_UFO;
+		}
+
+		if (!(features & NETIF_F_SG)) {
+			if (name)
+				printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
+				       "since no NETIF_F_SG feature.\n", name);
+			features &= ~NETIF_F_UFO;
+		}
+	}
+
+	return features;
+}
+EXPORT_SYMBOL(netdev_fix_features);
+
+/* Some devices need to (re-)set their netdev_ops inside
+ * ->init() or similar.  If that happens, we have to setup
+ * the compat pointers again.
+ */
+void netdev_resync_ops(struct net_device *dev)
+{
+#ifdef CONFIG_COMPAT_NET_DEV_OPS
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	dev->init = ops->ndo_init;
+	dev->uninit = ops->ndo_uninit;
+	dev->open = ops->ndo_open;
+	dev->change_rx_flags = ops->ndo_change_rx_flags;
+	dev->set_rx_mode = ops->ndo_set_rx_mode;
+	dev->set_multicast_list = ops->ndo_set_multicast_list;
+	dev->set_mac_address = ops->ndo_set_mac_address;
+	dev->validate_addr = ops->ndo_validate_addr;
+	dev->do_ioctl = ops->ndo_do_ioctl;
+	dev->set_config = ops->ndo_set_config;
+	dev->change_mtu = ops->ndo_change_mtu;
+	dev->neigh_setup = ops->ndo_neigh_setup;
+	dev->tx_timeout = ops->ndo_tx_timeout;
+	dev->get_stats = ops->ndo_get_stats;
+	dev->vlan_rx_register = ops->ndo_vlan_rx_register;
+	dev->vlan_rx_add_vid = ops->ndo_vlan_rx_add_vid;
+	dev->vlan_rx_kill_vid = ops->ndo_vlan_rx_kill_vid;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = ops->ndo_poll_controller;
+#endif
+#endif
+}
+EXPORT_SYMBOL(netdev_resync_ops);
+
+/**
+ *	register_netdevice	- register a network device
+ *	@dev: device to register
+ *
+ *	Take a completed network device structure and add it to the kernel
+ *	interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
+ *	chain. 0 is returned on success. A negative errno code is returned
+ *	on a failure to set up the device, or if the name is a duplicate.
+ *
+ *	Callers must hold the rtnl semaphore. You may want
+ *	register_netdev() instead of this.
+ *
+ *	BUGS:
+ *	The locking appears insufficient to guarantee two parallel registers
+ *	will not get the same name.
+ */
+
+int register_netdevice(struct net_device *dev)
+{
+	struct hlist_head *head;
+	struct hlist_node *p;
+	int ret;
+	struct net *net = dev_net(dev);
+
+	BUG_ON(dev_boot_phase);
+	ASSERT_RTNL();
+
+	might_sleep();
+
+	/* When net_device's are persistent, this will be fatal. */
+	BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
+	BUG_ON(!net);
+
+	spin_lock_init(&dev->addr_list_lock);
+	netdev_set_addr_lockdep_class(dev);
+	netdev_init_queue_locks(dev);
+
+	dev->iflink = -1;
+
+#ifdef CONFIG_COMPAT_NET_DEV_OPS
+	/* Netdevice_ops API compatiability support.
+	 * This is temporary until all network devices are converted.
+	 */
+	if (dev->netdev_ops) {
+		netdev_resync_ops(dev);
+	} else {
+		char drivername[64];
+		pr_info("%s (%s): not using net_device_ops yet\n",
+			dev->name, netdev_drivername(dev, drivername, 64));
+
+		/* This works only because net_device_ops and the
+		   compatiablity structure are the same. */
+		dev->netdev_ops = (void *) &(dev->init);
+	}
+#endif
+
+	/* Init, if this function is available */
+	if (dev->netdev_ops->ndo_init) {
+		ret = dev->netdev_ops->ndo_init(dev);
+		if (ret) {
+			if (ret > 0)
+				ret = -EIO;
+			goto out;
+		}
+	}
+
+	if (!dev_valid_name(dev->name)) {
+		ret = -EINVAL;
+		goto err_uninit;
+	}
+
+	dev->ifindex = dev_new_index(net);
+	if (dev->iflink == -1)
+		dev->iflink = dev->ifindex;
+
+	/* Check for existence of name */
+	head = dev_name_hash(net, dev->name);
+	hlist_for_each(p, head) {
+		struct net_device *d
+			= hlist_entry(p, struct net_device, name_hlist);
+		if (!strncmp(d->name, dev->name, IFNAMSIZ)) {
+			ret = -EEXIST;
+			goto err_uninit;
+		}
+	}
+
+	/* Fix illegal checksum combinations */
+	if ((dev->features & NETIF_F_HW_CSUM) &&
+	    (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
+		printk(KERN_NOTICE "%s: mixed HW and IP checksum settings.\n",
+		       dev->name);
+		dev->features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM);
+	}
+
+	if ((dev->features & NETIF_F_NO_CSUM) &&
+	    (dev->features & (NETIF_F_HW_CSUM|NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
+		printk(KERN_NOTICE "%s: mixed no checksumming and other settings.\n",
+		       dev->name);
+		dev->features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM|NETIF_F_HW_CSUM);
+	}
+
+	dev->features = netdev_fix_features(dev->features, dev->name);
+
+	/* Enable software GSO if SG is supported. */
+	if (dev->features & NETIF_F_SG)
+		dev->features |= NETIF_F_GSO;
+
+	netdev_initialize_kobject(dev);
+	ret = netdev_register_kobject(dev);
+	if (ret)
+		goto err_uninit;
+	dev->reg_state = NETREG_REGISTERED;
+
+	/*
+	 *	Default initial state at registry is that the
+	 *	device is present.
+	 */
+
+	set_bit(__LINK_STATE_PRESENT, &dev->state);
+
+	dev_init_scheduler(dev);
+	dev_hold(dev);
+	list_netdevice(dev);
+
+	/* Notify protocols, that a new device appeared. */
+	ret = call_netdevice_notifiers(NETDEV_REGISTER, dev);
+	ret = notifier_to_errno(ret);
+	if (ret) {
+		rollback_registered(dev);
+		dev->reg_state = NETREG_UNREGISTERED;
+	}
+
+out:
+	return ret;
+
+err_uninit:
+	if (dev->netdev_ops->ndo_uninit)
+		dev->netdev_ops->ndo_uninit(dev);
+	goto out;
+}
+
+/**
+ *	init_dummy_netdev	- init a dummy network device for NAPI
+ *	@dev: device to init
+ *
+ *	This takes a network device structure and initialize the minimum
+ *	amount of fields so it can be used to schedule NAPI polls without
+ *	registering a full blown interface. This is to be used by drivers
+ *	that need to tie several hardware interfaces to a single NAPI
+ *	poll scheduler due to HW limitations.
+ */
+int init_dummy_netdev(struct net_device *dev)
+{
+	/* Clear everything. Note we don't initialize spinlocks
+	 * are they aren't supposed to be taken by any of the
+	 * NAPI code and this dummy netdev is supposed to be
+	 * only ever used for NAPI polls
+	 */
+	memset(dev, 0, sizeof(struct net_device));
+
+	/* make sure we BUG if trying to hit standard
+	 * register/unregister code path
+	 */
+	dev->reg_state = NETREG_DUMMY;
+
+	/* initialize the ref count */
+	atomic_set(&dev->refcnt, 1);
+
+	/* NAPI wants this */
+	INIT_LIST_HEAD(&dev->napi_list);
+
+	/* a dummy interface is started by default */
+	set_bit(__LINK_STATE_PRESENT, &dev->state);
+	set_bit(__LINK_STATE_START, &dev->state);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(init_dummy_netdev);
+
+
+/**
+ *	register_netdev	- register a network device
+ *	@dev: device to register
+ *
+ *	Take a completed network device structure and add it to the kernel
+ *	interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
+ *	chain. 0 is returned on success. A negative errno code is returned
+ *	on a failure to set up the device, or if the name is a duplicate.
+ *
+ *	This is a wrapper around register_netdevice that takes the rtnl semaphore
+ *	and expands the device name if you passed a format string to
+ *	alloc_netdev.
+ */
+int register_netdev(struct net_device *dev)
+{
+	int err;
+
+	rtnl_lock();
+
+	/*
+	 * If the name is a format string the caller wants us to do a
+	 * name allocation.
+	 */
+	if (strchr(dev->name, '%')) {
+		err = dev_alloc_name(dev, dev->name);
+		if (err < 0)
+			goto out;
+	}
+
+	err = register_netdevice(dev);
+out:
+	rtnl_unlock();
+	return err;
+}
+EXPORT_SYMBOL(register_netdev);
+
+/*
+ * netdev_wait_allrefs - wait until all references are gone.
+ *
+ * This is called when unregistering network devices.
+ *
+ * Any protocol or device that holds a reference should register
+ * for netdevice notification, and cleanup and put back the
+ * reference if they receive an UNREGISTER event.
+ * We can get stuck here if buggy protocols don't correctly
+ * call dev_put.
+ */
+static void netdev_wait_allrefs(struct net_device *dev)
+{
+	unsigned long rebroadcast_time, warning_time;
+
+	rebroadcast_time = warning_time = jiffies;
+	while (atomic_read(&dev->refcnt) != 0) {
+		if (time_after(jiffies, rebroadcast_time + 1 * HZ)) {
+			rtnl_lock();
+
+			/* Rebroadcast unregister notification */
+			call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+			if (test_bit(__LINK_STATE_LINKWATCH_PENDING,
+				     &dev->state)) {
+				/* We must not have linkwatch events
+				 * pending on unregister. If this
+				 * happens, we simply run the queue
+				 * unscheduled, resulting in a noop
+				 * for this device.
+				 */
+				linkwatch_run_queue();
+			}
+
+			__rtnl_unlock();
+
+			rebroadcast_time = jiffies;
+		}
+
+		msleep(250);
+
+		if (time_after(jiffies, warning_time + 10 * HZ)) {
+			printk(KERN_EMERG "unregister_netdevice: "
+			       "waiting for %s to become free. Usage "
+			       "count = %d\n",
+			       dev->name, atomic_read(&dev->refcnt));
+			warning_time = jiffies;
+		}
+	}
+}
+
+/* The sequence is:
+ *
+ *	rtnl_lock();
+ *	...
+ *	register_netdevice(x1);
+ *	register_netdevice(x2);
+ *	...
+ *	unregister_netdevice(y1);
+ *	unregister_netdevice(y2);
+ *      ...
+ *	rtnl_unlock();
+ *	free_netdev(y1);
+ *	free_netdev(y2);
+ *
+ * We are invoked by rtnl_unlock().
+ * This allows us to deal with problems:
+ * 1) We can delete sysfs objects which invoke hotplug
+ *    without deadlocking with linkwatch via keventd.
+ * 2) Since we run with the RTNL semaphore not held, we can sleep
+ *    safely in order to wait for the netdev refcnt to drop to zero.
+ *
+ * We must not return until all unregister events added during
+ * the interval the lock was held have been completed.
+ */
+void netdev_run_todo(void)
+{
+	struct list_head list;
+
+	/* Snapshot list, allow later requests */
+	list_replace_init(&net_todo_list, &list);
+
+	__rtnl_unlock();
+
+	while (!list_empty(&list)) {
+		struct net_device *dev
+			= list_entry(list.next, struct net_device, todo_list);
+		list_del(&dev->todo_list);
+
+		if (unlikely(dev->reg_state != NETREG_UNREGISTERING)) {
+			printk(KERN_ERR "network todo '%s' but state %d\n",
+			       dev->name, dev->reg_state);
+			dump_stack();
+			continue;
+		}
+
+		dev->reg_state = NETREG_UNREGISTERED;
+
+		on_each_cpu(flush_backlog, dev, 1);
+
+		netdev_wait_allrefs(dev);
+
+		/* paranoia */
+		BUG_ON(atomic_read(&dev->refcnt));
+		WARN_ON(dev->ip_ptr);
+		WARN_ON(dev->ip6_ptr);
+		WARN_ON(dev->dn_ptr);
+
+		if (dev->destructor)
+			dev->destructor(dev);
+
+		/* Free network device */
+		kobject_put(&dev->dev.kobj);
+	}
+}
+
+/**
+ *	dev_get_stats	- get network device statistics
+ *	@dev: device to get statistics from
+ *
+ *	Get network statistics from device. The device driver may provide
+ *	its own method by setting dev->netdev_ops->get_stats; otherwise
+ *	the internal statistics structure is used.
+ */
+const struct net_device_stats *dev_get_stats(struct net_device *dev)
+ {
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	if (ops->ndo_get_stats)
+		return ops->ndo_get_stats(dev);
+	else
+		return &dev->stats;
+}
+EXPORT_SYMBOL(dev_get_stats);
+
+static void netdev_init_one_queue(struct net_device *dev,
+				  struct netdev_queue *queue,
+				  void *_unused)
+{
+	queue->dev = dev;
+}
+
+static void netdev_init_queues(struct net_device *dev)
+{
+	netdev_init_one_queue(dev, &dev->rx_queue, NULL);
+	netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
+	spin_lock_init(&dev->tx_global_lock);
+}
+
+/**
+ *	alloc_netdev_mq - allocate network device
+ *	@sizeof_priv:	size of private data to allocate space for
+ *	@name:		device name format string
+ *	@setup:		callback to initialize device
+ *	@queue_count:	the number of subqueues to allocate
+ *
+ *	Allocates a struct net_device with private data area for driver use
+ *	and performs basic initialization.  Also allocates subquue structs
+ *	for each queue on the device at the end of the netdevice.
+ */
+struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
+		void (*setup)(struct net_device *), unsigned int queue_count)
+{
+	struct netdev_queue *tx;
+	struct net_device *dev;
+	size_t alloc_size;
+	void *p;
+
+	BUG_ON(strlen(name) >= sizeof(dev->name));
+
+	alloc_size = sizeof(struct net_device);
+	if (sizeof_priv) {
+		/* ensure 32-byte alignment of private area */
+		alloc_size = (alloc_size + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST;
+		alloc_size += sizeof_priv;
+	}
+	/* ensure 32-byte alignment of whole construct */
+	alloc_size += NETDEV_ALIGN_CONST;
+
+	p = kzalloc(alloc_size, GFP_KERNEL);
+	if (!p) {
+		printk(KERN_ERR "alloc_netdev: Unable to allocate device.\n");
+		return NULL;
+	}
+
+	tx = kcalloc(queue_count, sizeof(struct netdev_queue), GFP_KERNEL);
+	if (!tx) {
+		printk(KERN_ERR "alloc_netdev: Unable to allocate "
+		       "tx qdiscs.\n");
+		kfree(p);
+		return NULL;
+	}
+
+	dev = (struct net_device *)
+		(((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+	dev->padded = (char *)dev - (char *)p;
+	dev_net_set(dev, &init_net);
+
+	dev->_tx = tx;
+	dev->num_tx_queues = queue_count;
+	dev->real_num_tx_queues = queue_count;
+
+	dev->gso_max_size = GSO_MAX_SIZE;
+
+	netdev_init_queues(dev);
+
+	INIT_LIST_HEAD(&dev->napi_list);
+	setup(dev);
+	strcpy(dev->name, name);
+	return dev;
+}
+EXPORT_SYMBOL(alloc_netdev_mq);
+
+/**
+ *	free_netdev - free network device
+ *	@dev: device
+ *
+ *	This function does the last stage of destroying an allocated device
+ * 	interface. The reference to the device object is released.
+ *	If this is the last reference then it will be freed.
+ */
+void free_netdev(struct net_device *dev)
+{
+	struct napi_struct *p, *n;
+
+	release_net(dev_net(dev));
+
+	kfree(dev->_tx);
+
+	list_for_each_entry_safe(p, n, &dev->napi_list, dev_list)
+		netif_napi_del(p);
+
+	/*  Compatibility with error handling in drivers */
+	if (dev->reg_state == NETREG_UNINITIALIZED) {
+		kfree((char *)dev - dev->padded);
+		return;
+	}
+
+	BUG_ON(dev->reg_state != NETREG_UNREGISTERED);
+	dev->reg_state = NETREG_RELEASED;
+
+	/* will free via device release */
+	put_device(&dev->dev);
+}
+
+/**
+ *	synchronize_net -  Synchronize with packet receive processing
+ *
+ *	Wait for packets currently being received to be done.
+ *	Does not block later packets from starting.
+ */
+void synchronize_net(void)
+{
+	might_sleep();
+	synchronize_rcu();
+}
+
+/**
+ *	unregister_netdevice - remove device from the kernel
+ *	@dev: device
+ *
+ *	This function shuts down a device interface and removes it
+ *	from the kernel tables.
+ *
+ *	Callers must hold the rtnl semaphore.  You may want
+ *	unregister_netdev() instead of this.
+ */
+
+void unregister_netdevice(struct net_device *dev)
+{
+	ASSERT_RTNL();
+
+	rollback_registered(dev);
+	/* Finish processing unregister after unlock */
+	net_set_todo(dev);
+}
+
+/**
+ *	unregister_netdev - remove device from the kernel
+ *	@dev: device
+ *
+ *	This function shuts down a device interface and removes it
+ *	from the kernel tables.
+ *
+ *	This is just a wrapper for unregister_netdevice that takes
+ *	the rtnl semaphore.  In general you want to use this and not
+ *	unregister_netdevice.
+ */
+void unregister_netdev(struct net_device *dev)
+{
+	rtnl_lock();
+	unregister_netdevice(dev);
+	rtnl_unlock();
+}
+
+EXPORT_SYMBOL(unregister_netdev);
+
+/**
+ *	dev_change_net_namespace - move device to different nethost namespace
+ *	@dev: device
+ *	@net: network namespace
+ *	@pat: If not NULL name pattern to try if the current device name
+ *	      is already taken in the destination network namespace.
+ *
+ *	This function shuts down a device interface and moves it
+ *	to a new network namespace. On success 0 is returned, on
+ *	a failure a netagive errno code is returned.
+ *
+ *	Callers must hold the rtnl semaphore.
+ */
+
+int dev_change_net_namespace(struct net_device *dev, struct net *net, const char *pat)
+{
+	char buf[IFNAMSIZ];
+	const char *destname;
+	int err;
+
+	ASSERT_RTNL();
+
+	/* Don't allow namespace local devices to be moved. */
+	err = -EINVAL;
+	if (dev->features & NETIF_F_NETNS_LOCAL)
+		goto out;
+
+#ifdef CONFIG_SYSFS
+	/* Don't allow real devices to be moved when sysfs
+	 * is enabled.
+	 */
+	err = -EINVAL;
+	if (dev->dev.parent)
+		goto out;
+#endif
+
+	/* Ensure the device has been registrered */
+	err = -EINVAL;
+	if (dev->reg_state != NETREG_REGISTERED)
+		goto out;
+
+	/* Get out if there is nothing todo */
+	err = 0;
+	if (net_eq(dev_net(dev), net))
+		goto out;
+
+	/* Pick the destination device name, and ensure
+	 * we can use it in the destination network namespace.
+	 */
+	err = -EEXIST;
+	destname = dev->name;
+	if (__dev_get_by_name(net, destname)) {
+		/* We get here if we can't use the current device name */
+		if (!pat)
+			goto out;
+		if (!dev_valid_name(pat))
+			goto out;
+		if (strchr(pat, '%')) {
+			if (__dev_alloc_name(net, pat, buf) < 0)
+				goto out;
+			destname = buf;
+		} else
+			destname = pat;
+		if (__dev_get_by_name(net, destname))
+			goto out;
+	}
+
+	/*
+	 * And now a mini version of register_netdevice unregister_netdevice.
+	 */
+
+	/* If device is running close it first. */
+	dev_close(dev);
+
+	/* And unlink it from device chain */
+	err = -ENODEV;
+	unlist_netdevice(dev);
+
+	synchronize_net();
+
+	/* Shutdown queueing discipline. */
+	dev_shutdown(dev);
+
+	/* Notify protocols, that we are about to destroy
+	   this device. They should clean all the things.
+	*/
+	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+	/*
+	 *	Flush the unicast and multicast chains
+	 */
+	dev_addr_discard(dev);
+
+	netdev_unregister_kobject(dev);
+
+	/* Actually switch the network namespace */
+	dev_net_set(dev, net);
+
+	/* Assign the new device name */
+	if (destname != dev->name)
+		strcpy(dev->name, destname);
+
+	/* If there is an ifindex conflict assign a new one */
+	if (__dev_get_by_index(net, dev->ifindex)) {
+		int iflink = (dev->iflink == dev->ifindex);
+		dev->ifindex = dev_new_index(net);
+		if (iflink)
+			dev->iflink = dev->ifindex;
+	}
+
+	/* Fixup kobjects */
+	err = netdev_register_kobject(dev);
+	WARN_ON(err);
+
+	/* Add the device back in the hashes */
+	list_netdevice(dev);
+
+	/* Notify protocols, that a new device appeared. */
+	call_netdevice_notifiers(NETDEV_REGISTER, dev);
+
+	synchronize_net();
+	err = 0;
+out:
+	return err;
+}
+
+static int dev_cpu_callback(struct notifier_block *nfb,
+			    unsigned long action,
+			    void *ocpu)
+{
+	struct sk_buff **list_skb;
+	struct Qdisc **list_net;
+	struct sk_buff *skb;
+	unsigned int cpu, oldcpu = (unsigned long)ocpu;
+	struct softnet_data *sd, *oldsd;
+
+	if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
+		return NOTIFY_OK;
+
+	local_irq_disable();
+	cpu = smp_processor_id();
+	sd = &per_cpu(softnet_data, cpu);
+	oldsd = &per_cpu(softnet_data, oldcpu);
+
+	/* Find end of our completion_queue. */
+	list_skb = &sd->completion_queue;
+	while (*list_skb)
+		list_skb = &(*list_skb)->next;
+	/* Append completion queue from offline CPU. */
+	*list_skb = oldsd->completion_queue;
+	oldsd->completion_queue = NULL;
+
+	/* Find end of our output_queue. */
+	list_net = &sd->output_queue;
+	while (*list_net)
+		list_net = &(*list_net)->next_sched;
+	/* Append output queue from offline CPU. */
+	*list_net = oldsd->output_queue;
+	oldsd->output_queue = NULL;
+
+	raise_softirq_irqoff(NET_TX_SOFTIRQ);
+	local_irq_enable();
+
+	/* Process offline CPU's input_pkt_queue */
+	while ((skb = __skb_dequeue(&oldsd->input_pkt_queue)))
+		netif_rx(skb);
+
+	return NOTIFY_OK;
+}
+
+
+/**
+ *	netdev_increment_features - increment feature set by one
+ *	@all: current feature set
+ *	@one: new feature set
+ *	@mask: mask feature set
+ *
+ *	Computes a new feature set after adding a device with feature set
+ *	@one to the master device with current feature set @all.  Will not
+ *	enable anything that is off in @mask. Returns the new feature set.
+ */
+unsigned long netdev_increment_features(unsigned long all, unsigned long one,
+					unsigned long mask)
+{
+	/* If device needs checksumming, downgrade to it. */
+        if (all & NETIF_F_NO_CSUM && !(one & NETIF_F_NO_CSUM))
+		all ^= NETIF_F_NO_CSUM | (one & NETIF_F_ALL_CSUM);
+	else if (mask & NETIF_F_ALL_CSUM) {
+		/* If one device supports v4/v6 checksumming, set for all. */
+		if (one & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM) &&
+		    !(all & NETIF_F_GEN_CSUM)) {
+			all &= ~NETIF_F_ALL_CSUM;
+			all |= one & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+		}
+
+		/* If one device supports hw checksumming, set for all. */
+		if (one & NETIF_F_GEN_CSUM && !(all & NETIF_F_GEN_CSUM)) {
+			all &= ~NETIF_F_ALL_CSUM;
+			all |= NETIF_F_HW_CSUM;
+		}
+	}
+
+	one |= NETIF_F_ALL_CSUM;
+
+	one |= all & NETIF_F_ONE_FOR_ALL;
+	all &= one | NETIF_F_LLTX | NETIF_F_GSO;
+	all |= one & mask & NETIF_F_ONE_FOR_ALL;
+
+	return all;
+}
+EXPORT_SYMBOL(netdev_increment_features);
+
+static struct hlist_head *netdev_create_hash(void)
+{
+	int i;
+	struct hlist_head *hash;
+
+	hash = kmalloc(sizeof(*hash) * NETDEV_HASHENTRIES, GFP_KERNEL);
+	if (hash != NULL)
+		for (i = 0; i < NETDEV_HASHENTRIES; i++)
+			INIT_HLIST_HEAD(&hash[i]);
+
+	return hash;
+}
+
+/* Initialize per network namespace state */
+static int __net_init netdev_init(struct net *net)
+{
+	INIT_LIST_HEAD(&net->dev_base_head);
+
+	net->dev_name_head = netdev_create_hash();
+	if (net->dev_name_head == NULL)
+		goto err_name;
+
+	net->dev_index_head = netdev_create_hash();
+	if (net->dev_index_head == NULL)
+		goto err_idx;
+
+	return 0;
+
+err_idx:
+	kfree(net->dev_name_head);
+err_name:
+	return -ENOMEM;
+}
+
+/**
+ *	netdev_drivername - network driver for the device
+ *	@dev: network device
+ *	@buffer: buffer for resulting name
+ *	@len: size of buffer
+ *
+ *	Determine network driver for device.
+ */
+char *netdev_drivername(const struct net_device *dev, char *buffer, int len)
+{
+	const struct device_driver *driver;
+	const struct device *parent;
+
+	if (len <= 0 || !buffer)
+		return buffer;
+	buffer[0] = 0;
+
+	parent = dev->dev.parent;
+
+	if (!parent)
+		return buffer;
+
+	driver = parent->driver;
+	if (driver && driver->name)
+		strlcpy(buffer, driver->name, len);
+	return buffer;
+}
+
+static void __net_exit netdev_exit(struct net *net)
+{
+	kfree(net->dev_name_head);
+	kfree(net->dev_index_head);
+}
+
+static struct pernet_operations __net_initdata netdev_net_ops = {
+	.init = netdev_init,
+	.exit = netdev_exit,
+};
+
+static void __net_exit default_device_exit(struct net *net)
+{
+	struct net_device *dev;
+	/*
+	 * Push all migratable of the network devices back to the
+	 * initial network namespace
+	 */
+	rtnl_lock();
+restart:
+	for_each_netdev(net, dev) {
+		int err;
+		char fb_name[IFNAMSIZ];
+
+		/* Ignore unmoveable devices (i.e. loopback) */
+		if (dev->features & NETIF_F_NETNS_LOCAL)
+			continue;
+
+		/* Delete virtual devices */
+		if (dev->rtnl_link_ops && dev->rtnl_link_ops->dellink) {
+			dev->rtnl_link_ops->dellink(dev);
+			goto restart;
+		}
+
+		/* Push remaing network devices to init_net */
+		snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
+		err = dev_change_net_namespace(dev, &init_net, fb_name);
+		if (err) {
+			printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n",
+				__func__, dev->name, err);
+			BUG();
+		}
+		goto restart;
+	}
+	rtnl_unlock();
+}
+
+static struct pernet_operations __net_initdata default_device_ops = {
+	.exit = default_device_exit,
+};
+
+/*
+ *	Initialize the DEV module. At boot time this walks the device list and
+ *	unhooks any devices that fail to initialise (normally hardware not
+ *	present) and leaves us with a valid list of present and active devices.
+ *
+ */
+
+/*
+ *       This is called single threaded during boot, so no need
+ *       to take the rtnl semaphore.
+ */
+static int __init net_dev_init(void)
+{
+	int i, rc = -ENOMEM;
+
+	BUG_ON(!dev_boot_phase);
+
+	if (dev_proc_init())
+		goto out;
+
+	if (netdev_kobject_init())
+		goto out;
+
+	INIT_LIST_HEAD(&ptype_all);
+	for (i = 0; i < PTYPE_HASH_SIZE; i++)
+		INIT_LIST_HEAD(&ptype_base[i]);
+
+	if (register_pernet_subsys(&netdev_net_ops))
+		goto out;
+
+	/*
+	 *	Initialise the packet receive queues.
+	 */
+
+	for_each_possible_cpu(i) {
+		struct softnet_data *queue;
+
+		queue = &per_cpu(softnet_data, i);
+		skb_queue_head_init(&queue->input_pkt_queue);
+		queue->completion_queue = NULL;
+		INIT_LIST_HEAD(&queue->poll_list);
+
+		queue->backlog.poll = process_backlog;
+		queue->backlog.weight = weight_p;
+		queue->backlog.gro_list = NULL;
+	}
+
+	dev_boot_phase = 0;
+
+	/* The loopback device is special if any other network devices
+	 * is present in a network namespace the loopback device must
+	 * be present. Since we now dynamically allocate and free the
+	 * loopback device ensure this invariant is maintained by
+	 * keeping the loopback device as the first device on the
+	 * list of network devices.  Ensuring the loopback devices
+	 * is the first device that appears and the last network device
+	 * that disappears.
+	 */
+	if (register_pernet_device(&loopback_net_ops))
+		goto out;
+
+	if (register_pernet_device(&default_device_ops))
+		goto out;
+
+	open_softirq(NET_TX_SOFTIRQ, net_tx_action);
+	open_softirq(NET_RX_SOFTIRQ, net_rx_action);
+
+	hotcpu_notifier(dev_cpu_callback, 0);
+	dst_init();
+	dev_mcast_init();
+	rc = 0;
+out:
+	return rc;
+}
+
+subsys_initcall(net_dev_init);
+
+EXPORT_SYMBOL(__dev_get_by_index);
+EXPORT_SYMBOL(__dev_get_by_name);
+EXPORT_SYMBOL(__dev_remove_pack);
+EXPORT_SYMBOL(dev_valid_name);
+EXPORT_SYMBOL(dev_add_pack);
+EXPORT_SYMBOL(dev_alloc_name);
+EXPORT_SYMBOL(dev_close);
+EXPORT_SYMBOL(dev_get_by_flags);
+EXPORT_SYMBOL(dev_get_by_index);
+EXPORT_SYMBOL(dev_get_by_name);
+EXPORT_SYMBOL(dev_open);
+EXPORT_SYMBOL(dev_queue_xmit);
+EXPORT_SYMBOL(dev_remove_pack);
+EXPORT_SYMBOL(dev_set_allmulti);
+EXPORT_SYMBOL(dev_set_promiscuity);
+EXPORT_SYMBOL(dev_change_flags);
+EXPORT_SYMBOL(dev_set_mtu);
+EXPORT_SYMBOL(dev_set_mac_address);
+EXPORT_SYMBOL(free_netdev);
+EXPORT_SYMBOL(netdev_boot_setup_check);
+EXPORT_SYMBOL(netdev_set_master);
+EXPORT_SYMBOL(netdev_state_change);
+EXPORT_SYMBOL(netif_receive_skb);
+EXPORT_SYMBOL(netif_rx);
+EXPORT_SYMBOL(register_gifconf);
+EXPORT_SYMBOL(register_netdevice);
+EXPORT_SYMBOL(register_netdevice_notifier);
+EXPORT_SYMBOL(skb_checksum_help);
+EXPORT_SYMBOL(synchronize_net);
+EXPORT_SYMBOL(unregister_netdevice);
+EXPORT_SYMBOL(unregister_netdevice_notifier);
+EXPORT_SYMBOL(net_enable_timestamp);
+EXPORT_SYMBOL(net_disable_timestamp);
+EXPORT_SYMBOL(dev_get_flags);
+
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+EXPORT_SYMBOL(br_handle_frame_hook);
+EXPORT_SYMBOL(br_fdb_get_hook);
+EXPORT_SYMBOL(br_fdb_put_hook);
+#endif
+
+EXPORT_SYMBOL(dev_load);
+
+EXPORT_PER_CPU_SYMBOL(softnet_data);
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/dev_mcast.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/dev_mcast.c.svn-base
new file mode 100644
index 00000000..9e2fa39f
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/dev_mcast.c.svn-base
@@ -0,0 +1,229 @@
+/*
+ *	Linux NET3:	Multicast List maintenance.
+ *
+ *	Authors:
+ *		Tim Kordas <tjk@nostromo.eeap.cwru.edu>
+ *		Richard Underwood <richard@wuzz.demon.co.uk>
+ *
+ *	Stir fried together from the IP multicast and CAP patches above
+ *		Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ *	Fixes:
+ *		Alan Cox	:	Update the device on a real delete
+ *					rather than any time but...
+ *		Alan Cox	:	IFF_ALLMULTI support.
+ *		Alan Cox	: 	New format set_multicast_list() calls.
+ *		Gleb Natapov    :       Remove dev_mc_lock.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <linux/bitops.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/in.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <net/net_namespace.h>
+#include <net/ip.h>
+#include <net/route.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <net/arp.h>
+
+
+/*
+ *	Device multicast list maintenance.
+ *
+ *	This is used both by IP and by the user level maintenance functions.
+ *	Unlike BSD we maintain a usage count on a given multicast address so
+ *	that a casual user application can add/delete multicasts used by
+ *	protocols without doing damage to the protocols when it deletes the
+ *	entries. It also helps IP as it tracks overlapping maps.
+ *
+ *	Device mc lists are changed by bh at least if IPv6 is enabled,
+ *	so that it must be bh protected.
+ *
+ *	We block accesses to device mc filters with netif_tx_lock.
+ */
+
+/*
+ *	Delete a device level multicast
+ */
+
+int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
+{
+	int err;
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_delete(&dev->mc_list, &dev->mc_count,
+				addr, alen, glbl);
+	if (!err) {
+		/*
+		 *	We have altered the list, so the card
+		 *	loaded filter is now wrong. Fix it
+		 */
+
+		__dev_set_rx_mode(dev);
+	}
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+
+/*
+ *	Add a device level multicast
+ */
+
+int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
+{
+	int err;
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
+	if (!err)
+		__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+
+/**
+ *	dev_mc_sync	- Synchronize device's multicast list to another device
+ *	@to: destination device
+ *	@from: source device
+ *
+ * 	Add newly added addresses to the destination device and release
+ * 	addresses that have no users left. The source device must be
+ * 	locked by netif_tx_lock_bh.
+ *
+ *	This function is intended to be called from the dev->set_multicast_list
+ *	or dev->set_rx_mode function of layered software devices.
+ */
+int dev_mc_sync(struct net_device *to, struct net_device *from)
+{
+	int err = 0;
+
+	netif_addr_lock_bh(to);
+	err = __dev_addr_sync(&to->mc_list, &to->mc_count,
+			      &from->mc_list, &from->mc_count);
+	if (!err)
+		__dev_set_rx_mode(to);
+	netif_addr_unlock_bh(to);
+
+	return err;
+}
+EXPORT_SYMBOL(dev_mc_sync);
+
+
+/**
+ * 	dev_mc_unsync	- Remove synchronized addresses from the destination
+ * 			  device
+ *	@to: destination device
+ *	@from: source device
+ *
+ * 	Remove all addresses that were added to the destination device by
+ * 	dev_mc_sync(). This function is intended to be called from the
+ * 	dev->stop function of layered software devices.
+ */
+void dev_mc_unsync(struct net_device *to, struct net_device *from)
+{
+	netif_addr_lock_bh(from);
+	netif_addr_lock(to);
+
+	__dev_addr_unsync(&to->mc_list, &to->mc_count,
+			  &from->mc_list, &from->mc_count);
+	__dev_set_rx_mode(to);
+
+	netif_addr_unlock(to);
+	netif_addr_unlock_bh(from);
+}
+EXPORT_SYMBOL(dev_mc_unsync);
+
+#ifdef CONFIG_PROC_FS
+static int dev_mc_seq_show(struct seq_file *seq, void *v)
+{
+	struct dev_addr_list *m;
+	struct net_device *dev = v;
+
+	if (v == SEQ_START_TOKEN)
+		return 0;
+
+	netif_addr_lock_bh(dev);
+	for (m = dev->mc_list; m; m = m->next) {
+		int i;
+
+		seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
+			   dev->name, m->dmi_users, m->dmi_gusers);
+
+		for (i = 0; i < m->dmi_addrlen; i++)
+			seq_printf(seq, "%02x", m->dmi_addr[i]);
+
+		seq_putc(seq, '\n');
+	}
+	netif_addr_unlock_bh(dev);
+	return 0;
+}
+
+static const struct seq_operations dev_mc_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = dev_mc_seq_show,
+};
+
+static int dev_mc_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &dev_mc_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations dev_mc_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = dev_mc_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+#endif
+
+static int __net_init dev_mc_net_init(struct net *net)
+{
+	if (!proc_net_fops_create(net, "dev_mcast", 0, &dev_mc_seq_fops))
+		return -ENOMEM;
+	return 0;
+}
+
+static void __net_exit dev_mc_net_exit(struct net *net)
+{
+	proc_net_remove(net, "dev_mcast");
+}
+
+static struct pernet_operations __net_initdata dev_mc_net_ops = {
+	.init = dev_mc_net_init,
+	.exit = dev_mc_net_exit,
+};
+
+void __init dev_mcast_init(void)
+{
+	register_pernet_subsys(&dev_mc_net_ops);
+}
+
+EXPORT_SYMBOL(dev_mc_add);
+EXPORT_SYMBOL(dev_mc_delete);
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/ethtool.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/ethtool.c.svn-base
new file mode 100644
index 00000000..947710a3
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/ethtool.c.svn-base
@@ -0,0 +1,1091 @@
+/*
+ * net/core/ethtool.c - Ethtool ioctl handler
+ * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
+ *
+ * This file is where we call all the ethtool_ops commands to get
+ * the information ethtool needs.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <asm/uaccess.h>
+
+/*
+ * Some useful ethtool_ops methods that're device independent.
+ * If we find that all drivers want to do the same thing here,
+ * we can turn these into dev_() function calls.
+ */
+
+u32 ethtool_op_get_link(struct net_device *dev)
+{
+	return netif_carrier_ok(dev) ? 1 : 0;
+}
+
+u32 ethtool_op_get_tx_csum(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_ALL_CSUM) != 0;
+}
+
+int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_IP_CSUM;
+	else
+		dev->features &= ~NETIF_F_IP_CSUM;
+
+	return 0;
+}
+
+int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_HW_CSUM;
+	else
+		dev->features &= ~NETIF_F_HW_CSUM;
+
+	return 0;
+}
+
+int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	else
+		dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+
+	return 0;
+}
+
+u32 ethtool_op_get_sg(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_SG) != 0;
+}
+
+int ethtool_op_set_sg(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_SG;
+	else
+		dev->features &= ~NETIF_F_SG;
+
+	return 0;
+}
+
+u32 ethtool_op_get_tso(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_TSO) != 0;
+}
+
+int ethtool_op_set_tso(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_TSO;
+	else
+		dev->features &= ~NETIF_F_TSO;
+
+	return 0;
+}
+
+u32 ethtool_op_get_ufo(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_UFO) != 0;
+}
+
+int ethtool_op_set_ufo(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_UFO;
+	else
+		dev->features &= ~NETIF_F_UFO;
+	return 0;
+}
+
+/* the following list of flags are the same as their associated
+ * NETIF_F_xxx values in include/linux/netdevice.h
+ */
+static const u32 flags_dup_features =
+	ETH_FLAG_LRO;
+
+u32 ethtool_op_get_flags(struct net_device *dev)
+{
+	/* in the future, this function will probably contain additional
+	 * handling for flags which are not so easily handled
+	 * by a simple masking operation
+	 */
+
+	return dev->features & flags_dup_features;
+}
+
+int ethtool_op_set_flags(struct net_device *dev, u32 data)
+{
+	if (data & ETH_FLAG_LRO)
+		dev->features |= NETIF_F_LRO;
+	else
+		dev->features &= ~NETIF_F_LRO;
+
+	return 0;
+}
+
+/* Handlers for each ethtool command */
+
+static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_cmd cmd = { ETHTOOL_GSET };
+	int err;
+
+	if (!dev->ethtool_ops->get_settings)
+		return -EOPNOTSUPP;
+
+	err = dev->ethtool_ops->get_settings(dev, &cmd);
+	if (err < 0)
+		return err;
+
+	if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_cmd cmd;
+
+	if (!dev->ethtool_ops->set_settings)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_settings(dev, &cmd);
+}
+
+static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_drvinfo info;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+
+	if (!ops->get_drvinfo)
+		return -EOPNOTSUPP;
+
+	memset(&info, 0, sizeof(info));
+	info.cmd = ETHTOOL_GDRVINFO;
+	ops->get_drvinfo(dev, &info);
+
+	if (ops->get_sset_count) {
+		int rc;
+
+		rc = ops->get_sset_count(dev, ETH_SS_TEST);
+		if (rc >= 0)
+			info.testinfo_len = rc;
+		rc = ops->get_sset_count(dev, ETH_SS_STATS);
+		if (rc >= 0)
+			info.n_stats = rc;
+		rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
+		if (rc >= 0)
+			info.n_priv_flags = rc;
+	} else {
+		/* code path for obsolete hooks */
+
+		if (ops->self_test_count)
+			info.testinfo_len = ops->self_test_count(dev);
+		if (ops->get_stats_count)
+			info.n_stats = ops->get_stats_count(dev);
+	}
+	if (ops->get_regs_len)
+		info.regdump_len = ops->get_regs_len(dev);
+	if (ops->get_eeprom_len)
+		info.eedump_len = ops->get_eeprom_len(dev);
+
+	if (copy_to_user(useraddr, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_rxhash(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_rxnfc cmd;
+
+	if (!dev->ethtool_ops->set_rxhash)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_rxhash(dev, &cmd);
+}
+
+static int ethtool_get_rxhash(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_rxnfc info;
+
+	if (!dev->ethtool_ops->get_rxhash)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&info, useraddr, sizeof(info)))
+		return -EFAULT;
+
+	dev->ethtool_ops->get_rxhash(dev, &info);
+
+	if (copy_to_user(useraddr, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_regs regs;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	void *regbuf;
+	int reglen, ret;
+
+	if (!ops->get_regs || !ops->get_regs_len)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&regs, useraddr, sizeof(regs)))
+		return -EFAULT;
+
+	reglen = ops->get_regs_len(dev);
+	if (regs.len > reglen)
+		regs.len = reglen;
+
+	regbuf = kmalloc(reglen, GFP_USER);
+	if (!regbuf)
+		return -ENOMEM;
+
+	ops->get_regs(dev, &regs, regbuf);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &regs, sizeof(regs)))
+		goto out;
+	useraddr += offsetof(struct ethtool_regs, data);
+	if (copy_to_user(useraddr, regbuf, regs.len))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(regbuf);
+	return ret;
+}
+
+static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
+
+	if (!dev->ethtool_ops->get_wol)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_wol(dev, &wol);
+
+	if (copy_to_user(useraddr, &wol, sizeof(wol)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_wolinfo wol;
+
+	if (!dev->ethtool_ops->set_wol)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&wol, useraddr, sizeof(wol)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_wol(dev, &wol);
+}
+
+static int ethtool_nway_reset(struct net_device *dev)
+{
+	if (!dev->ethtool_ops->nway_reset)
+		return -EOPNOTSUPP;
+
+	return dev->ethtool_ops->nway_reset(dev);
+}
+
+static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_eeprom eeprom;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	void __user *userbuf = useraddr + sizeof(eeprom);
+	u32 bytes_remaining;
+	u8 *data;
+	int ret = 0;
+
+	if (!ops->get_eeprom || !ops->get_eeprom_len)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
+		return -EFAULT;
+
+	/* Check for wrap and zero */
+	if (eeprom.offset + eeprom.len <= eeprom.offset)
+		return -EINVAL;
+
+	/* Check for exceeding total eeprom len */
+	if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
+		return -EINVAL;
+
+	data = kmalloc(PAGE_SIZE, GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	bytes_remaining = eeprom.len;
+	while (bytes_remaining > 0) {
+		eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
+
+		ret = ops->get_eeprom(dev, &eeprom, data);
+		if (ret)
+			break;
+		if (copy_to_user(userbuf, data, eeprom.len)) {
+			ret = -EFAULT;
+			break;
+		}
+		userbuf += eeprom.len;
+		eeprom.offset += eeprom.len;
+		bytes_remaining -= eeprom.len;
+	}
+
+	eeprom.len = userbuf - (useraddr + sizeof(eeprom));
+	eeprom.offset -= eeprom.len;
+	if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
+		ret = -EFAULT;
+
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_eeprom eeprom;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	void __user *userbuf = useraddr + sizeof(eeprom);
+	u32 bytes_remaining;
+	u8 *data;
+	int ret = 0;
+
+	if (!ops->set_eeprom || !ops->get_eeprom_len)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
+		return -EFAULT;
+
+	/* Check for wrap and zero */
+	if (eeprom.offset + eeprom.len <= eeprom.offset)
+		return -EINVAL;
+
+	/* Check for exceeding total eeprom len */
+	if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
+		return -EINVAL;
+
+	data = kmalloc(PAGE_SIZE, GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	bytes_remaining = eeprom.len;
+	while (bytes_remaining > 0) {
+		eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
+
+		if (copy_from_user(data, userbuf, eeprom.len)) {
+			ret = -EFAULT;
+			break;
+		}
+		ret = ops->set_eeprom(dev, &eeprom, data);
+		if (ret)
+			break;
+		userbuf += eeprom.len;
+		eeprom.offset += eeprom.len;
+		bytes_remaining -= eeprom.len;
+	}
+
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE };
+
+	if (!dev->ethtool_ops->get_coalesce)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_coalesce(dev, &coalesce);
+
+	if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_coalesce coalesce;
+
+	if (!dev->ethtool_ops->set_coalesce)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_coalesce(dev, &coalesce);
+}
+
+static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM };
+
+	if (!dev->ethtool_ops->get_ringparam)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_ringparam(dev, &ringparam);
+
+	if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_ringparam ringparam;
+
+	if (!dev->ethtool_ops->set_ringparam)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_ringparam(dev, &ringparam);
+}
+
+static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
+
+	if (!dev->ethtool_ops->get_pauseparam)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
+
+	if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_pauseparam pauseparam;
+
+	if (!dev->ethtool_ops->set_pauseparam)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
+}
+
+static int __ethtool_set_sg(struct net_device *dev, u32 data)
+{
+	int err;
+
+	if (!data && dev->ethtool_ops->set_tso) {
+		err = dev->ethtool_ops->set_tso(dev, 0);
+		if (err)
+			return err;
+	}
+
+	if (!data && dev->ethtool_ops->set_ufo) {
+		err = dev->ethtool_ops->set_ufo(dev, 0);
+		if (err)
+			return err;
+	}
+	return dev->ethtool_ops->set_sg(dev, data);
+}
+
+static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+	int err;
+
+	if (!dev->ethtool_ops->set_tx_csum)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (!edata.data && dev->ethtool_ops->set_sg) {
+		err = __ethtool_set_sg(dev, 0);
+		if (err)
+			return err;
+	}
+
+	return dev->ethtool_ops->set_tx_csum(dev, edata.data);
+}
+
+static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_rx_csum)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (!edata.data && dev->ethtool_ops->set_sg)
+		dev->features &= ~NETIF_F_GRO;
+
+	return dev->ethtool_ops->set_rx_csum(dev, edata.data);
+}
+
+static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_sg)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (edata.data &&
+	    !(dev->features & NETIF_F_ALL_CSUM))
+		return -EINVAL;
+
+	return __ethtool_set_sg(dev, edata.data);
+}
+
+static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_tso)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (edata.data && !(dev->features & NETIF_F_SG))
+		return -EINVAL;
+
+	return dev->ethtool_ops->set_tso(dev, edata.data);
+}
+
+static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_ufo)
+		return -EOPNOTSUPP;
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+	if (edata.data && !(dev->features & NETIF_F_SG))
+		return -EINVAL;
+	if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+		return -EINVAL;
+	return dev->ethtool_ops->set_ufo(dev, edata.data);
+}
+
+static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata = { ETHTOOL_GGSO };
+
+	edata.data = dev->features & NETIF_F_GSO;
+	if (copy_to_user(useraddr, &edata, sizeof(edata)))
+		 return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+	if (edata.data)
+		dev->features |= NETIF_F_GSO;
+	else
+		dev->features &= ~NETIF_F_GSO;
+	return 0;
+}
+
+static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata = { ETHTOOL_GGRO };
+
+	edata.data = dev->features & NETIF_F_GRO;
+	if (copy_to_user(useraddr, &edata, sizeof(edata)))
+		 return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (edata.data) {
+		if (!dev->ethtool_ops->get_rx_csum ||
+		    !dev->ethtool_ops->get_rx_csum(dev))
+			return -EINVAL;
+		dev->features |= NETIF_F_GRO;
+	} else
+		dev->features &= ~NETIF_F_GRO;
+
+	return 0;
+}
+
+static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_test test;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	u64 *data;
+	int ret, test_len;
+
+	if (!ops->self_test)
+		return -EOPNOTSUPP;
+	if (!ops->get_sset_count && !ops->self_test_count)
+		return -EOPNOTSUPP;
+
+	if (ops->get_sset_count)
+		test_len = ops->get_sset_count(dev, ETH_SS_TEST);
+	else
+		/* code path for obsolete hook */
+		test_len = ops->self_test_count(dev);
+	if (test_len < 0)
+		return test_len;
+	WARN_ON(test_len == 0);
+
+	if (copy_from_user(&test, useraddr, sizeof(test)))
+		return -EFAULT;
+
+	test.len = test_len;
+	data = kmalloc(test_len * sizeof(u64), GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	ops->self_test(dev, &test, data);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &test, sizeof(test)))
+		goto out;
+	useraddr += sizeof(test);
+	if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_gstrings gstrings;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	u8 *data;
+	int ret;
+
+	if (!ops->get_strings)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
+		return -EFAULT;
+
+	if (ops->get_sset_count) {
+		ret = ops->get_sset_count(dev, gstrings.string_set);
+		if (ret < 0)
+			return ret;
+
+		gstrings.len = ret;
+	} else {
+		/* code path for obsolete hooks */
+
+		switch (gstrings.string_set) {
+		case ETH_SS_TEST:
+			if (!ops->self_test_count)
+				return -EOPNOTSUPP;
+			gstrings.len = ops->self_test_count(dev);
+			break;
+		case ETH_SS_STATS:
+			if (!ops->get_stats_count)
+				return -EOPNOTSUPP;
+			gstrings.len = ops->get_stats_count(dev);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	ops->get_strings(dev, gstrings.string_set, data);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
+		goto out;
+	useraddr += sizeof(gstrings);
+	if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_value id;
+
+	if (!dev->ethtool_ops->phys_id)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&id, useraddr, sizeof(id)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->phys_id(dev, id.data);
+}
+
+static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_stats stats;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	u64 *data;
+	int ret, n_stats;
+
+	if (!ops->get_ethtool_stats)
+		return -EOPNOTSUPP;
+	if (!ops->get_sset_count && !ops->get_stats_count)
+		return -EOPNOTSUPP;
+
+	if (ops->get_sset_count)
+		n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
+	else
+		/* code path for obsolete hook */
+		n_stats = ops->get_stats_count(dev);
+	if (n_stats < 0)
+		return n_stats;
+	WARN_ON(n_stats == 0);
+
+	if (copy_from_user(&stats, useraddr, sizeof(stats)))
+		return -EFAULT;
+
+	stats.n_stats = n_stats;
+	data = kmalloc(n_stats * sizeof(u64), GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	ops->get_ethtool_stats(dev, &stats, data);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &stats, sizeof(stats)))
+		goto out;
+	useraddr += sizeof(stats);
+	if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_perm_addr epaddr;
+
+	if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
+		return -EFAULT;
+
+	if (epaddr.size < dev->addr_len)
+		return -ETOOSMALL;
+	epaddr.size = dev->addr_len;
+
+	if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
+		return -EFAULT;
+	useraddr += sizeof(epaddr);
+	if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
+			     u32 cmd, u32 (*actor)(struct net_device *))
+{
+	struct ethtool_value edata = { cmd };
+
+	if (!actor)
+		return -EOPNOTSUPP;
+
+	edata.data = actor(dev);
+
+	if (copy_to_user(useraddr, &edata, sizeof(edata)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
+			     void (*actor)(struct net_device *, u32))
+{
+	struct ethtool_value edata;
+
+	if (!actor)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	actor(dev, edata.data);
+	return 0;
+}
+
+static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
+			     int (*actor)(struct net_device *, u32))
+{
+	struct ethtool_value edata;
+
+	if (!actor)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	return actor(dev, edata.data);
+}
+
+/* The main entry point in this file.  Called from net/core/dev.c */
+
+int dev_ethtool(struct net *net, struct ifreq *ifr)
+{
+	struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
+	void __user *useraddr = ifr->ifr_data;
+	u32 ethcmd;
+	int rc;
+	unsigned long old_features;
+
+	if (!dev || !netif_device_present(dev))
+		return -ENODEV;
+
+	if (!dev->ethtool_ops)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&ethcmd, useraddr, sizeof (ethcmd)))
+		return -EFAULT;
+
+	/* Allow some commands to be done by anyone */
+	switch(ethcmd) {
+	case ETHTOOL_GDRVINFO:
+	case ETHTOOL_GMSGLVL:
+	case ETHTOOL_GCOALESCE:
+	case ETHTOOL_GRINGPARAM:
+	case ETHTOOL_GPAUSEPARAM:
+	case ETHTOOL_GRXCSUM:
+	case ETHTOOL_GTXCSUM:
+	case ETHTOOL_GSG:
+	case ETHTOOL_GSTRINGS:
+	case ETHTOOL_GTSO:
+	case ETHTOOL_GPERMADDR:
+	case ETHTOOL_GUFO:
+	case ETHTOOL_GGSO:
+	case ETHTOOL_GFLAGS:
+	case ETHTOOL_GPFLAGS:
+	case ETHTOOL_GRXFH:
+		break;
+	default:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+	}
+
+	if (dev->ethtool_ops->begin)
+		if ((rc = dev->ethtool_ops->begin(dev)) < 0)
+			return rc;
+
+	old_features = dev->features;
+
+	switch (ethcmd) {
+	case ETHTOOL_GSET:
+		rc = ethtool_get_settings(dev, useraddr);
+		break;
+	case ETHTOOL_SSET:
+		rc = ethtool_set_settings(dev, useraddr);
+		break;
+	case ETHTOOL_GDRVINFO:
+		rc = ethtool_get_drvinfo(dev, useraddr);
+		break;
+	case ETHTOOL_GREGS:
+		rc = ethtool_get_regs(dev, useraddr);
+		break;
+	case ETHTOOL_GWOL:
+		rc = ethtool_get_wol(dev, useraddr);
+		break;
+	case ETHTOOL_SWOL:
+		rc = ethtool_set_wol(dev, useraddr);
+		break;
+	case ETHTOOL_GMSGLVL:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_msglevel);
+		break;
+	case ETHTOOL_SMSGLVL:
+		rc = ethtool_set_value_void(dev, useraddr,
+				       dev->ethtool_ops->set_msglevel);
+		break;
+	case ETHTOOL_NWAY_RST:
+		rc = ethtool_nway_reset(dev);
+		break;
+	case ETHTOOL_GLINK:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_link);
+		break;
+	case ETHTOOL_GEEPROM:
+		rc = ethtool_get_eeprom(dev, useraddr);
+		break;
+	case ETHTOOL_SEEPROM:
+		rc = ethtool_set_eeprom(dev, useraddr);
+		break;
+	case ETHTOOL_GCOALESCE:
+		rc = ethtool_get_coalesce(dev, useraddr);
+		break;
+	case ETHTOOL_SCOALESCE:
+		rc = ethtool_set_coalesce(dev, useraddr);
+		break;
+	case ETHTOOL_GRINGPARAM:
+		rc = ethtool_get_ringparam(dev, useraddr);
+		break;
+	case ETHTOOL_SRINGPARAM:
+		rc = ethtool_set_ringparam(dev, useraddr);
+		break;
+	case ETHTOOL_GPAUSEPARAM:
+		rc = ethtool_get_pauseparam(dev, useraddr);
+		break;
+	case ETHTOOL_SPAUSEPARAM:
+		rc = ethtool_set_pauseparam(dev, useraddr);
+		break;
+	case ETHTOOL_GRXCSUM:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_rx_csum);
+		break;
+	case ETHTOOL_SRXCSUM:
+		rc = ethtool_set_rx_csum(dev, useraddr);
+		break;
+	case ETHTOOL_GTXCSUM:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_tx_csum ?
+					dev->ethtool_ops->get_tx_csum :
+					ethtool_op_get_tx_csum));
+		break;
+	case ETHTOOL_STXCSUM:
+		rc = ethtool_set_tx_csum(dev, useraddr);
+		break;
+	case ETHTOOL_GSG:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_sg ?
+					dev->ethtool_ops->get_sg :
+					ethtool_op_get_sg));
+		break;
+	case ETHTOOL_SSG:
+		rc = ethtool_set_sg(dev, useraddr);
+		break;
+	case ETHTOOL_GTSO:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_tso ?
+					dev->ethtool_ops->get_tso :
+					ethtool_op_get_tso));
+		break;
+	case ETHTOOL_STSO:
+		rc = ethtool_set_tso(dev, useraddr);
+		break;
+	case ETHTOOL_TEST:
+		rc = ethtool_self_test(dev, useraddr);
+		break;
+	case ETHTOOL_GSTRINGS:
+		rc = ethtool_get_strings(dev, useraddr);
+		break;
+	case ETHTOOL_PHYS_ID:
+		rc = ethtool_phys_id(dev, useraddr);
+		break;
+	case ETHTOOL_GSTATS:
+		rc = ethtool_get_stats(dev, useraddr);
+		break;
+	case ETHTOOL_GPERMADDR:
+		rc = ethtool_get_perm_addr(dev, useraddr);
+		break;
+	case ETHTOOL_GUFO:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_ufo ?
+					dev->ethtool_ops->get_ufo :
+					ethtool_op_get_ufo));
+		break;
+	case ETHTOOL_SUFO:
+		rc = ethtool_set_ufo(dev, useraddr);
+		break;
+	case ETHTOOL_GGSO:
+		rc = ethtool_get_gso(dev, useraddr);
+		break;
+	case ETHTOOL_SGSO:
+		rc = ethtool_set_gso(dev, useraddr);
+		break;
+	case ETHTOOL_GFLAGS:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_flags);
+		break;
+	case ETHTOOL_SFLAGS:
+		rc = ethtool_set_value(dev, useraddr,
+				       dev->ethtool_ops->set_flags);
+		break;
+	case ETHTOOL_GPFLAGS:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_priv_flags);
+		break;
+	case ETHTOOL_SPFLAGS:
+		rc = ethtool_set_value(dev, useraddr,
+				       dev->ethtool_ops->set_priv_flags);
+		break;
+	case ETHTOOL_GRXFH:
+		rc = ethtool_get_rxhash(dev, useraddr);
+		break;
+	case ETHTOOL_SRXFH:
+		rc = ethtool_set_rxhash(dev, useraddr);
+		break;
+	case ETHTOOL_GGRO:
+		rc = ethtool_get_gro(dev, useraddr);
+		break;
+	case ETHTOOL_SGRO:
+		rc = ethtool_set_gro(dev, useraddr);
+		break;
+	default:
+		rc = -EOPNOTSUPP;
+	}
+
+	if (dev->ethtool_ops->complete)
+		dev->ethtool_ops->complete(dev);
+
+	if (old_features != dev->features)
+		netdev_features_change(dev);
+
+	return rc;
+}
+
+EXPORT_SYMBOL(ethtool_op_get_link);
+EXPORT_SYMBOL(ethtool_op_get_sg);
+EXPORT_SYMBOL(ethtool_op_get_tso);
+EXPORT_SYMBOL(ethtool_op_get_tx_csum);
+EXPORT_SYMBOL(ethtool_op_set_sg);
+EXPORT_SYMBOL(ethtool_op_set_tso);
+EXPORT_SYMBOL(ethtool_op_set_tx_csum);
+EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
+EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
+EXPORT_SYMBOL(ethtool_op_set_ufo);
+EXPORT_SYMBOL(ethtool_op_get_ufo);
+EXPORT_SYMBOL(ethtool_op_set_flags);
+EXPORT_SYMBOL(ethtool_op_get_flags);
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/filter.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/filter.c.svn-base
new file mode 100644
index 00000000..d1d779ca
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/filter.c.svn-base
@@ -0,0 +1,541 @@
+/*
+ * Linux Socket Filter - Kernel level socket filtering
+ *
+ * Author:
+ *     Jay Schulist <jschlst@samba.org>
+ *
+ * Based on the design of:
+ *     - The Berkeley Packet Filter
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Andi Kleen - Fix a few bad bugs and races.
+ * Kris Katterjohn - Added many additional checks in sk_chk_filter()
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/fcntl.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/if_packet.h>
+#include <net/ip.h>
+#include <net/protocol.h>
+#include <net/netlink.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+#include <linux/filter.h>
+
+/* No hurry in this branch */
+static void *__load_pointer(struct sk_buff *skb, int k)
+{
+	u8 *ptr = NULL;
+
+	if (k >= SKF_NET_OFF)
+		ptr = skb_network_header(skb) + k - SKF_NET_OFF;
+	else if (k >= SKF_LL_OFF)
+		ptr = skb_mac_header(skb) + k - SKF_LL_OFF;
+
+	if (ptr >= skb->head && ptr < skb_tail_pointer(skb))
+		return ptr;
+	return NULL;
+}
+
+static inline void *load_pointer(struct sk_buff *skb, int k,
+				 unsigned int size, void *buffer)
+{
+	if (k >= 0)
+		return skb_header_pointer(skb, k, size, buffer);
+	else {
+		if (k >= SKF_AD_OFF)
+			return NULL;
+		return __load_pointer(skb, k);
+	}
+}
+
+/**
+ *	sk_filter - run a packet through a socket filter
+ *	@sk: sock associated with &sk_buff
+ *	@skb: buffer to filter
+ *
+ * Run the filter code and then cut skb->data to correct size returned by
+ * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller
+ * than pkt_len we keep whole skb->data. This is the socket level
+ * wrapper to sk_run_filter. It returns 0 if the packet should
+ * be accepted or -EPERM if the packet should be tossed.
+ *
+ */
+int sk_filter(struct sock *sk, struct sk_buff *skb)
+{
+	int err;
+	struct sk_filter *filter;
+
+	err = security_sock_rcv_skb(sk, skb);
+	if (err)
+		return err;
+
+	rcu_read_lock_bh();
+	filter = rcu_dereference(sk->sk_filter);
+	if (filter) {
+		unsigned int pkt_len = sk_run_filter(skb, filter->insns,
+				filter->len);
+		err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
+	}
+	rcu_read_unlock_bh();
+
+	return err;
+}
+EXPORT_SYMBOL(sk_filter);
+
+/**
+ *	sk_run_filter - run a filter on a socket
+ *	@skb: buffer to run the filter on
+ *	@filter: filter to apply
+ *	@flen: length of filter
+ *
+ * Decode and apply filter instructions to the skb->data.
+ * Return length to keep, 0 for none. skb is the data we are
+ * filtering, filter is the array of filter instructions, and
+ * len is the number of filter blocks in the array.
+ */
+unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen)
+{
+	struct sock_filter *fentry;	/* We walk down these */
+	void *ptr;
+	u32 A = 0;			/* Accumulator */
+	u32 X = 0;			/* Index Register */
+	u32 mem[BPF_MEMWORDS];		/* Scratch Memory Store */
+	u32 tmp;
+	int k;
+	int pc;
+
+	/*
+	 * Process array of filter instructions.
+	 */
+	for (pc = 0; pc < flen; pc++) {
+		fentry = &filter[pc];
+
+		switch (fentry->code) {
+		case BPF_ALU|BPF_ADD|BPF_X:
+			A += X;
+			continue;
+		case BPF_ALU|BPF_ADD|BPF_K:
+			A += fentry->k;
+			continue;
+		case BPF_ALU|BPF_SUB|BPF_X:
+			A -= X;
+			continue;
+		case BPF_ALU|BPF_SUB|BPF_K:
+			A -= fentry->k;
+			continue;
+		case BPF_ALU|BPF_MUL|BPF_X:
+			A *= X;
+			continue;
+		case BPF_ALU|BPF_MUL|BPF_K:
+			A *= fentry->k;
+			continue;
+		case BPF_ALU|BPF_DIV|BPF_X:
+			if (X == 0)
+				return 0;
+			A /= X;
+			continue;
+		case BPF_ALU|BPF_DIV|BPF_K:
+			A /= fentry->k;
+			continue;
+		case BPF_ALU|BPF_AND|BPF_X:
+			A &= X;
+			continue;
+		case BPF_ALU|BPF_AND|BPF_K:
+			A &= fentry->k;
+			continue;
+		case BPF_ALU|BPF_OR|BPF_X:
+			A |= X;
+			continue;
+		case BPF_ALU|BPF_OR|BPF_K:
+			A |= fentry->k;
+			continue;
+		case BPF_ALU|BPF_LSH|BPF_X:
+			A <<= X;
+			continue;
+		case BPF_ALU|BPF_LSH|BPF_K:
+			A <<= fentry->k;
+			continue;
+		case BPF_ALU|BPF_RSH|BPF_X:
+			A >>= X;
+			continue;
+		case BPF_ALU|BPF_RSH|BPF_K:
+			A >>= fentry->k;
+			continue;
+		case BPF_ALU|BPF_NEG:
+			A = -A;
+			continue;
+		case BPF_JMP|BPF_JA:
+			pc += fentry->k;
+			continue;
+		case BPF_JMP|BPF_JGT|BPF_K:
+			pc += (A > fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JGE|BPF_K:
+			pc += (A >= fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JEQ|BPF_K:
+			pc += (A == fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JSET|BPF_K:
+			pc += (A & fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JGT|BPF_X:
+			pc += (A > X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JGE|BPF_X:
+			pc += (A >= X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JEQ|BPF_X:
+			pc += (A == X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JSET|BPF_X:
+			pc += (A & X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_LD|BPF_W|BPF_ABS:
+			k = fentry->k;
+load_w:
+			ptr = load_pointer(skb, k, 4, &tmp);
+			if (ptr != NULL) {
+				A = get_unaligned_be32(ptr);
+				continue;
+			}
+			break;
+		case BPF_LD|BPF_H|BPF_ABS:
+			k = fentry->k;
+load_h:
+			ptr = load_pointer(skb, k, 2, &tmp);
+			if (ptr != NULL) {
+				A = get_unaligned_be16(ptr);
+				continue;
+			}
+			break;
+		case BPF_LD|BPF_B|BPF_ABS:
+			k = fentry->k;
+load_b:
+			ptr = load_pointer(skb, k, 1, &tmp);
+			if (ptr != NULL) {
+				A = *(u8 *)ptr;
+				continue;
+			}
+			break;
+		case BPF_LD|BPF_W|BPF_LEN:
+			A = skb->len;
+			continue;
+		case BPF_LDX|BPF_W|BPF_LEN:
+			X = skb->len;
+			continue;
+		case BPF_LD|BPF_W|BPF_IND:
+			k = X + fentry->k;
+			goto load_w;
+		case BPF_LD|BPF_H|BPF_IND:
+			k = X + fentry->k;
+			goto load_h;
+		case BPF_LD|BPF_B|BPF_IND:
+			k = X + fentry->k;
+			goto load_b;
+		case BPF_LDX|BPF_B|BPF_MSH:
+			ptr = load_pointer(skb, fentry->k, 1, &tmp);
+			if (ptr != NULL) {
+				X = (*(u8 *)ptr & 0xf) << 2;
+				continue;
+			}
+			return 0;
+		case BPF_LD|BPF_IMM:
+			A = fentry->k;
+			continue;
+		case BPF_LDX|BPF_IMM:
+			X = fentry->k;
+			continue;
+		case BPF_LD|BPF_MEM:
+			A = mem[fentry->k];
+			continue;
+		case BPF_LDX|BPF_MEM:
+			X = mem[fentry->k];
+			continue;
+		case BPF_MISC|BPF_TAX:
+			X = A;
+			continue;
+		case BPF_MISC|BPF_TXA:
+			A = X;
+			continue;
+		case BPF_RET|BPF_K:
+			return fentry->k;
+		case BPF_RET|BPF_A:
+			return A;
+		case BPF_ST:
+			mem[fentry->k] = A;
+			continue;
+		case BPF_STX:
+			mem[fentry->k] = X;
+			continue;
+		default:
+			WARN_ON(1);
+			return 0;
+		}
+
+		/*
+		 * Handle ancillary data, which are impossible
+		 * (or very difficult) to get parsing packet contents.
+		 */
+		switch (k-SKF_AD_OFF) {
+		case SKF_AD_PROTOCOL:
+			A = ntohs(skb->protocol);
+			continue;
+		case SKF_AD_PKTTYPE:
+			A = skb->pkt_type;
+			continue;
+		case SKF_AD_IFINDEX:
+			A = skb->dev->ifindex;
+			continue;
+		case SKF_AD_NLATTR: {
+			struct nlattr *nla;
+
+			if (skb_is_nonlinear(skb))
+				return 0;
+			if (A > skb->len - sizeof(struct nlattr))
+				return 0;
+
+			nla = nla_find((struct nlattr *)&skb->data[A],
+				       skb->len - A, X);
+			if (nla)
+				A = (void *)nla - (void *)skb->data;
+			else
+				A = 0;
+			continue;
+		}
+		case SKF_AD_NLATTR_NEST: {
+			struct nlattr *nla;
+
+			if (skb_is_nonlinear(skb))
+				return 0;
+			if (A > skb->len - sizeof(struct nlattr))
+				return 0;
+
+			nla = (struct nlattr *)&skb->data[A];
+			if (nla->nla_len > A - skb->len)
+				return 0;
+
+			nla = nla_find_nested(nla, X);
+			if (nla)
+				A = (void *)nla - (void *)skb->data;
+			else
+				A = 0;
+			continue;
+		}
+		default:
+			return 0;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(sk_run_filter);
+
+/**
+ *	sk_chk_filter - verify socket filter code
+ *	@filter: filter to verify
+ *	@flen: length of filter
+ *
+ * Check the user's filter code. If we let some ugly
+ * filter code slip through kaboom! The filter must contain
+ * no references or jumps that are out of range, no illegal
+ * instructions, and must end with a RET instruction.
+ *
+ * All jumps are forward as they are not signed.
+ *
+ * Returns 0 if the rule set is legal or -EINVAL if not.
+ */
+int sk_chk_filter(struct sock_filter *filter, int flen)
+{
+	struct sock_filter *ftest;
+	int pc;
+
+	if (flen == 0 || flen > BPF_MAXINSNS)
+		return -EINVAL;
+
+	/* check the filter code now */
+	for (pc = 0; pc < flen; pc++) {
+		ftest = &filter[pc];
+
+		/* Only allow valid instructions */
+		switch (ftest->code) {
+		case BPF_ALU|BPF_ADD|BPF_K:
+		case BPF_ALU|BPF_ADD|BPF_X:
+		case BPF_ALU|BPF_SUB|BPF_K:
+		case BPF_ALU|BPF_SUB|BPF_X:
+		case BPF_ALU|BPF_MUL|BPF_K:
+		case BPF_ALU|BPF_MUL|BPF_X:
+		case BPF_ALU|BPF_DIV|BPF_X:
+		case BPF_ALU|BPF_AND|BPF_K:
+		case BPF_ALU|BPF_AND|BPF_X:
+		case BPF_ALU|BPF_OR|BPF_K:
+		case BPF_ALU|BPF_OR|BPF_X:
+		case BPF_ALU|BPF_LSH|BPF_K:
+		case BPF_ALU|BPF_LSH|BPF_X:
+		case BPF_ALU|BPF_RSH|BPF_K:
+		case BPF_ALU|BPF_RSH|BPF_X:
+		case BPF_ALU|BPF_NEG:
+		case BPF_LD|BPF_W|BPF_ABS:
+		case BPF_LD|BPF_H|BPF_ABS:
+		case BPF_LD|BPF_B|BPF_ABS:
+		case BPF_LD|BPF_W|BPF_LEN:
+		case BPF_LD|BPF_W|BPF_IND:
+		case BPF_LD|BPF_H|BPF_IND:
+		case BPF_LD|BPF_B|BPF_IND:
+		case BPF_LD|BPF_IMM:
+		case BPF_LDX|BPF_W|BPF_LEN:
+		case BPF_LDX|BPF_B|BPF_MSH:
+		case BPF_LDX|BPF_IMM:
+		case BPF_MISC|BPF_TAX:
+		case BPF_MISC|BPF_TXA:
+		case BPF_RET|BPF_K:
+		case BPF_RET|BPF_A:
+			break;
+
+		/* Some instructions need special checks */
+
+		case BPF_ALU|BPF_DIV|BPF_K:
+			/* check for division by zero */
+			if (ftest->k == 0)
+				return -EINVAL;
+			break;
+
+		case BPF_LD|BPF_MEM:
+		case BPF_LDX|BPF_MEM:
+		case BPF_ST:
+		case BPF_STX:
+			/* check for invalid memory addresses */
+			if (ftest->k >= BPF_MEMWORDS)
+				return -EINVAL;
+			break;
+
+		case BPF_JMP|BPF_JA:
+			/*
+			 * Note, the large ftest->k might cause loops.
+			 * Compare this with conditional jumps below,
+			 * where offsets are limited. --ANK (981016)
+			 */
+			if (ftest->k >= (unsigned)(flen-pc-1))
+				return -EINVAL;
+			break;
+
+		case BPF_JMP|BPF_JEQ|BPF_K:
+		case BPF_JMP|BPF_JEQ|BPF_X:
+		case BPF_JMP|BPF_JGE|BPF_K:
+		case BPF_JMP|BPF_JGE|BPF_X:
+		case BPF_JMP|BPF_JGT|BPF_K:
+		case BPF_JMP|BPF_JGT|BPF_X:
+		case BPF_JMP|BPF_JSET|BPF_K:
+		case BPF_JMP|BPF_JSET|BPF_X:
+			/* for conditionals both must be safe */
+			if (pc + ftest->jt + 1 >= flen ||
+			    pc + ftest->jf + 1 >= flen)
+				return -EINVAL;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
+}
+EXPORT_SYMBOL(sk_chk_filter);
+
+/**
+ * 	sk_filter_rcu_release: Release a socket filter by rcu_head
+ *	@rcu: rcu_head that contains the sk_filter to free
+ */
+static void sk_filter_rcu_release(struct rcu_head *rcu)
+{
+	struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
+
+	sk_filter_release(fp);
+}
+
+static void sk_filter_delayed_uncharge(struct sock *sk, struct sk_filter *fp)
+{
+	unsigned int size = sk_filter_len(fp);
+
+	atomic_sub(size, &sk->sk_omem_alloc);
+	call_rcu_bh(&fp->rcu, sk_filter_rcu_release);
+}
+
+/**
+ *	sk_attach_filter - attach a socket filter
+ *	@fprog: the filter program
+ *	@sk: the socket to use
+ *
+ * Attach the user's filter code. We first run some sanity checks on
+ * it to make sure it does not explode on us later. If an error
+ * occurs or there is insufficient memory for the filter a negative
+ * errno code is returned. On success the return is zero.
+ */
+int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
+{
+	struct sk_filter *fp, *old_fp;
+	unsigned int fsize = sizeof(struct sock_filter) * fprog->len;
+	int err;
+
+	/* Make sure new filter is there and in the right amounts. */
+	if (fprog->filter == NULL)
+		return -EINVAL;
+
+	fp = sock_kmalloc(sk, fsize+sizeof(*fp), GFP_KERNEL);
+	if (!fp)
+		return -ENOMEM;
+	if (copy_from_user(fp->insns, fprog->filter, fsize)) {
+		sock_kfree_s(sk, fp, fsize+sizeof(*fp));
+		return -EFAULT;
+	}
+
+	atomic_set(&fp->refcnt, 1);
+	fp->len = fprog->len;
+
+	err = sk_chk_filter(fp->insns, fp->len);
+	if (err) {
+		sk_filter_uncharge(sk, fp);
+		return err;
+	}
+
+	rcu_read_lock_bh();
+	old_fp = rcu_dereference(sk->sk_filter);
+	rcu_assign_pointer(sk->sk_filter, fp);
+	rcu_read_unlock_bh();
+
+	if (old_fp)
+		sk_filter_delayed_uncharge(sk, old_fp);
+	return 0;
+}
+
+int sk_detach_filter(struct sock *sk)
+{
+	int ret = -ENOENT;
+	struct sk_filter *filter;
+
+	rcu_read_lock_bh();
+	filter = rcu_dereference(sk->sk_filter);
+	if (filter) {
+		rcu_assign_pointer(sk->sk_filter, NULL);
+		sk_filter_delayed_uncharge(sk, filter);
+		ret = 0;
+	}
+	rcu_read_unlock_bh();
+	return ret;
+}
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/kmap_skb.h.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/kmap_skb.h.svn-base
new file mode 100644
index 00000000..283c2b99
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/kmap_skb.h.svn-base
@@ -0,0 +1,19 @@
+#include <linux/highmem.h>
+
+static inline void *kmap_skb_frag(const skb_frag_t *frag)
+{
+#ifdef CONFIG_HIGHMEM
+	BUG_ON(in_irq());
+
+	local_bh_disable();
+#endif
+	return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
+}
+
+static inline void kunmap_skb_frag(void *vaddr)
+{
+	kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
+#ifdef CONFIG_HIGHMEM
+	local_bh_enable();
+#endif
+}
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/neighbour.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/neighbour.c.svn-base
new file mode 100644
index 00000000..278a142d
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/neighbour.c.svn-base
@@ -0,0 +1,2824 @@
+/*
+ *	Generic address resolution entity
+ *
+ *	Authors:
+ *	Pedro Roque		<roque@di.fc.ul.pt>
+ *	Alexey Kuznetsov	<kuznet@ms2.inr.ac.ru>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *	Fixes:
+ *	Vitaly E. Lavrov	releasing NULL neighbor in neigh_add.
+ *	Harald Welte		Add neighbour cache statistics like rtstat
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/socket.h>
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#ifdef CONFIG_SYSCTL
+#include <linux/sysctl.h>
+#endif
+#include <linux/times.h>
+#include <net/net_namespace.h>
+#include <net/neighbour.h>
+#include <net/dst.h>
+#include <net/sock.h>
+#include <net/netevent.h>
+#include <net/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/random.h>
+#include <linux/string.h>
+#include <linux/log2.h>
+
+#define NEIGH_DEBUG 1
+
+#define NEIGH_PRINTK(x...) printk(x)
+#define NEIGH_NOPRINTK(x...) do { ; } while(0)
+#define NEIGH_PRINTK0 NEIGH_PRINTK
+#define NEIGH_PRINTK1 NEIGH_NOPRINTK
+#define NEIGH_PRINTK2 NEIGH_NOPRINTK
+
+#if NEIGH_DEBUG >= 1
+#undef NEIGH_PRINTK1
+#define NEIGH_PRINTK1 NEIGH_PRINTK
+#endif
+#if NEIGH_DEBUG >= 2
+#undef NEIGH_PRINTK2
+#define NEIGH_PRINTK2 NEIGH_PRINTK
+#endif
+
+#define PNEIGH_HASHMASK		0xF
+
+static void neigh_timer_handler(unsigned long arg);
+static void __neigh_notify(struct neighbour *n, int type, int flags);
+static void neigh_update_notify(struct neighbour *neigh);
+static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev);
+
+static struct neigh_table *neigh_tables;
+#ifdef CONFIG_PROC_FS
+static const struct file_operations neigh_stat_seq_fops;
+#endif
+
+/*
+   Neighbour hash table buckets are protected with rwlock tbl->lock.
+
+   - All the scans/updates to hash buckets MUST be made under this lock.
+   - NOTHING clever should be made under this lock: no callbacks
+     to protocol backends, no attempts to send something to network.
+     It will result in deadlocks, if backend/driver wants to use neighbour
+     cache.
+   - If the entry requires some non-trivial actions, increase
+     its reference count and release table lock.
+
+   Neighbour entries are protected:
+   - with reference count.
+   - with rwlock neigh->lock
+
+   Reference count prevents destruction.
+
+   neigh->lock mainly serializes ll address data and its validity state.
+   However, the same lock is used to protect another entry fields:
+    - timer
+    - resolution queue
+
+   Again, nothing clever shall be made under neigh->lock,
+   the most complicated procedure, which we allow is dev->hard_header.
+   It is supposed, that dev->hard_header is simplistic and does
+   not make callbacks to neighbour tables.
+
+   The last lock is neigh_tbl_lock. It is pure SMP lock, protecting
+   list of neighbour tables. This list is used only in process context,
+ */
+
+static DEFINE_RWLOCK(neigh_tbl_lock);
+
+static int neigh_blackhole(struct sk_buff *skb)
+{
+	kfree_skb(skb);
+	return -ENETDOWN;
+}
+
+static void neigh_cleanup_and_release(struct neighbour *neigh)
+{
+	if (neigh->parms->neigh_cleanup)
+		neigh->parms->neigh_cleanup(neigh);
+
+	__neigh_notify(neigh, RTM_DELNEIGH, 0);
+	neigh_release(neigh);
+}
+
+/*
+ * It is random distribution in the interval (1/2)*base...(3/2)*base.
+ * It corresponds to default IPv6 settings and is not overridable,
+ * because it is really reasonable choice.
+ */
+
+unsigned long neigh_rand_reach_time(unsigned long base)
+{
+	return (base ? (net_random() % base) + (base >> 1) : 0);
+}
+EXPORT_SYMBOL(neigh_rand_reach_time);
+
+
+static int neigh_forced_gc(struct neigh_table *tbl)
+{
+	int shrunk = 0;
+	int i;
+
+	NEIGH_CACHE_STAT_INC(tbl, forced_gc_runs);
+
+	write_lock_bh(&tbl->lock);
+	for (i = 0; i <= tbl->hash_mask; i++) {
+		struct neighbour *n, **np;
+
+		np = &tbl->hash_buckets[i];
+		while ((n = *np) != NULL) {
+			/* Neighbour record may be discarded if:
+			 * - nobody refers to it.
+			 * - it is not permanent
+			 */
+			write_lock(&n->lock);
+			if (atomic_read(&n->refcnt) == 1 &&
+			    !(n->nud_state & NUD_PERMANENT)) {
+				*np	= n->next;
+				n->dead = 1;
+				shrunk	= 1;
+				write_unlock(&n->lock);
+				neigh_cleanup_and_release(n);
+				continue;
+			}
+			write_unlock(&n->lock);
+			np = &n->next;
+		}
+	}
+
+	tbl->last_flush = jiffies;
+
+	write_unlock_bh(&tbl->lock);
+
+	return shrunk;
+}
+
+static void neigh_add_timer(struct neighbour *n, unsigned long when)
+{
+	neigh_hold(n);
+	if (unlikely(mod_timer(&n->timer, when))) {
+		printk("NEIGH: BUG, double timer add, state is %x\n",
+		       n->nud_state);
+		dump_stack();
+	}
+}
+
+static int neigh_del_timer(struct neighbour *n)
+{
+	if ((n->nud_state & NUD_IN_TIMER) &&
+	    del_timer(&n->timer)) {
+		neigh_release(n);
+		return 1;
+	}
+	return 0;
+}
+
+static void pneigh_queue_purge(struct sk_buff_head *list)
+{
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(list)) != NULL) {
+		dev_put(skb->dev);
+		kfree_skb(skb);
+	}
+}
+
+static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev)
+{
+	int i;
+
+	for (i = 0; i <= tbl->hash_mask; i++) {
+		struct neighbour *n, **np = &tbl->hash_buckets[i];
+
+		while ((n = *np) != NULL) {
+			if (dev && n->dev != dev) {
+				np = &n->next;
+				continue;
+			}
+			*np = n->next;
+			write_lock(&n->lock);
+			neigh_del_timer(n);
+			n->dead = 1;
+
+			if (atomic_read(&n->refcnt) != 1) {
+				/* The most unpleasant situation.
+				   We must destroy neighbour entry,
+				   but someone still uses it.
+
+				   The destroy will be delayed until
+				   the last user releases us, but
+				   we must kill timers etc. and move
+				   it to safe state.
+				 */
+				skb_queue_purge(&n->arp_queue);
+				n->output = neigh_blackhole;
+				if (n->nud_state & NUD_VALID)
+					n->nud_state = NUD_NOARP;
+				else
+					n->nud_state = NUD_NONE;
+				NEIGH_PRINTK2("neigh %p is stray.\n", n);
+			}
+			write_unlock(&n->lock);
+			neigh_cleanup_and_release(n);
+		}
+	}
+}
+
+void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev)
+{
+	write_lock_bh(&tbl->lock);
+	neigh_flush_dev(tbl, dev);
+	write_unlock_bh(&tbl->lock);
+}
+EXPORT_SYMBOL(neigh_changeaddr);
+
+int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
+{
+	write_lock_bh(&tbl->lock);
+	neigh_flush_dev(tbl, dev);
+	pneigh_ifdown(tbl, dev);
+	write_unlock_bh(&tbl->lock);
+
+	del_timer_sync(&tbl->proxy_timer);
+	pneigh_queue_purge(&tbl->proxy_queue);
+	return 0;
+}
+EXPORT_SYMBOL(neigh_ifdown);
+
+static struct neighbour *neigh_alloc(struct neigh_table *tbl)
+{
+	struct neighbour *n = NULL;
+	unsigned long now = jiffies;
+	int entries;
+
+	entries = atomic_inc_return(&tbl->entries) - 1;
+	if (entries >= tbl->gc_thresh3 ||
+	    (entries >= tbl->gc_thresh2 &&
+	     time_after(now, tbl->last_flush + 5 * HZ))) {
+		if (!neigh_forced_gc(tbl) &&
+		    entries >= tbl->gc_thresh3)
+			goto out_entries;
+	}
+
+	n = kmem_cache_zalloc(tbl->kmem_cachep, GFP_ATOMIC);
+	if (!n)
+		goto out_entries;
+
+	skb_queue_head_init(&n->arp_queue);
+	rwlock_init(&n->lock);
+	n->updated	  = n->used = now;
+	n->nud_state	  = NUD_NONE;
+	n->output	  = neigh_blackhole;
+	n->parms	  = neigh_parms_clone(&tbl->parms);
+	setup_timer(&n->timer, neigh_timer_handler, (unsigned long)n);
+
+	NEIGH_CACHE_STAT_INC(tbl, allocs);
+	n->tbl		  = tbl;
+	atomic_set(&n->refcnt, 1);
+	n->dead		  = 1;
+out:
+	return n;
+
+out_entries:
+	atomic_dec(&tbl->entries);
+	goto out;
+}
+
+static struct neighbour **neigh_hash_alloc(unsigned int entries)
+{
+	unsigned long size = entries * sizeof(struct neighbour *);
+	struct neighbour **ret;
+
+	if (size <= PAGE_SIZE) {
+		ret = kzalloc(size, GFP_ATOMIC);
+	} else {
+		ret = (struct neighbour **)
+		      __get_free_pages(GFP_ATOMIC|__GFP_ZERO, get_order(size));
+	}
+	return ret;
+}
+
+static void neigh_hash_free(struct neighbour **hash, unsigned int entries)
+{
+	unsigned long size = entries * sizeof(struct neighbour *);
+
+	if (size <= PAGE_SIZE)
+		kfree(hash);
+	else
+		free_pages((unsigned long)hash, get_order(size));
+}
+
+static void neigh_hash_grow(struct neigh_table *tbl, unsigned long new_entries)
+{
+	struct neighbour **new_hash, **old_hash;
+	unsigned int i, new_hash_mask, old_entries;
+
+	NEIGH_CACHE_STAT_INC(tbl, hash_grows);
+
+	BUG_ON(!is_power_of_2(new_entries));
+	new_hash = neigh_hash_alloc(new_entries);
+	if (!new_hash)
+		return;
+
+	old_entries = tbl->hash_mask + 1;
+	new_hash_mask = new_entries - 1;
+	old_hash = tbl->hash_buckets;
+
+	get_random_bytes(&tbl->hash_rnd, sizeof(tbl->hash_rnd));
+	for (i = 0; i < old_entries; i++) {
+		struct neighbour *n, *next;
+
+		for (n = old_hash[i]; n; n = next) {
+			unsigned int hash_val = tbl->hash(n->primary_key, n->dev);
+
+			hash_val &= new_hash_mask;
+			next = n->next;
+
+			n->next = new_hash[hash_val];
+			new_hash[hash_val] = n;
+		}
+	}
+	tbl->hash_buckets = new_hash;
+	tbl->hash_mask = new_hash_mask;
+
+	neigh_hash_free(old_hash, old_entries);
+}
+
+struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey,
+			       struct net_device *dev)
+{
+	struct neighbour *n;
+	int key_len = tbl->key_len;
+	u32 hash_val;
+
+	NEIGH_CACHE_STAT_INC(tbl, lookups);
+
+	read_lock_bh(&tbl->lock);
+	hash_val = tbl->hash(pkey, dev);
+	for (n = tbl->hash_buckets[hash_val & tbl->hash_mask]; n; n = n->next) {
+		if (dev == n->dev && !memcmp(n->primary_key, pkey, key_len)) {
+			neigh_hold(n);
+			NEIGH_CACHE_STAT_INC(tbl, hits);
+			break;
+		}
+	}
+	read_unlock_bh(&tbl->lock);
+	return n;
+}
+EXPORT_SYMBOL(neigh_lookup);
+
+struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net,
+				     const void *pkey)
+{
+	struct neighbour *n;
+	int key_len = tbl->key_len;
+	u32 hash_val;
+
+	NEIGH_CACHE_STAT_INC(tbl, lookups);
+
+	read_lock_bh(&tbl->lock);
+	hash_val = tbl->hash(pkey, NULL);
+	for (n = tbl->hash_buckets[hash_val & tbl->hash_mask]; n; n = n->next) {
+		if (!memcmp(n->primary_key, pkey, key_len) &&
+		    net_eq(dev_net(n->dev), net)) {
+			neigh_hold(n);
+			NEIGH_CACHE_STAT_INC(tbl, hits);
+			break;
+		}
+	}
+	read_unlock_bh(&tbl->lock);
+	return n;
+}
+EXPORT_SYMBOL(neigh_lookup_nodev);
+
+struct neighbour *neigh_create(struct neigh_table *tbl, const void *pkey,
+			       struct net_device *dev)
+{
+	u32 hash_val;
+	int key_len = tbl->key_len;
+	int error;
+	struct neighbour *n1, *rc, *n = neigh_alloc(tbl);
+
+	if (!n) {
+		rc = ERR_PTR(-ENOBUFS);
+		goto out;
+	}
+
+	memcpy(n->primary_key, pkey, key_len);
+	n->dev = dev;
+	dev_hold(dev);
+
+	/* Protocol specific setup. */
+	if (tbl->constructor &&	(error = tbl->constructor(n)) < 0) {
+		rc = ERR_PTR(error);
+		goto out_neigh_release;
+	}
+
+	/* Device specific setup. */
+	if (n->parms->neigh_setup &&
+	    (error = n->parms->neigh_setup(n)) < 0) {
+		rc = ERR_PTR(error);
+		goto out_neigh_release;
+	}
+
+	n->confirmed = jiffies - (n->parms->base_reachable_time << 1);
+
+	write_lock_bh(&tbl->lock);
+
+	if (atomic_read(&tbl->entries) > (tbl->hash_mask + 1))
+		neigh_hash_grow(tbl, (tbl->hash_mask + 1) << 1);
+
+	hash_val = tbl->hash(pkey, dev) & tbl->hash_mask;
+
+	if (n->parms->dead) {
+		rc = ERR_PTR(-EINVAL);
+		goto out_tbl_unlock;
+	}
+
+	for (n1 = tbl->hash_buckets[hash_val]; n1; n1 = n1->next) {
+		if (dev == n1->dev && !memcmp(n1->primary_key, pkey, key_len)) {
+			neigh_hold(n1);
+			rc = n1;
+			goto out_tbl_unlock;
+		}
+	}
+
+	n->next = tbl->hash_buckets[hash_val];
+	tbl->hash_buckets[hash_val] = n;
+	n->dead = 0;
+	neigh_hold(n);
+	write_unlock_bh(&tbl->lock);
+	NEIGH_PRINTK2("neigh %p is created.\n", n);
+	rc = n;
+out:
+	return rc;
+out_tbl_unlock:
+	write_unlock_bh(&tbl->lock);
+out_neigh_release:
+	neigh_release(n);
+	goto out;
+}
+EXPORT_SYMBOL(neigh_create);
+
+static u32 pneigh_hash(const void *pkey, int key_len)
+{
+	u32 hash_val = *(u32 *)(pkey + key_len - 4);
+	hash_val ^= (hash_val >> 16);
+	hash_val ^= hash_val >> 8;
+	hash_val ^= hash_val >> 4;
+	hash_val &= PNEIGH_HASHMASK;
+	return hash_val;
+}
+
+static struct pneigh_entry *__pneigh_lookup_1(struct pneigh_entry *n,
+					      struct net *net,
+					      const void *pkey,
+					      int key_len,
+					      struct net_device *dev)
+{
+	while (n) {
+		if (!memcmp(n->key, pkey, key_len) &&
+		    net_eq(pneigh_net(n), net) &&
+		    (n->dev == dev || !n->dev))
+			return n;
+		n = n->next;
+	}
+	return NULL;
+}
+
+struct pneigh_entry *__pneigh_lookup(struct neigh_table *tbl,
+		struct net *net, const void *pkey, struct net_device *dev)
+{
+	int key_len = tbl->key_len;
+	u32 hash_val = pneigh_hash(pkey, key_len);
+
+	return __pneigh_lookup_1(tbl->phash_buckets[hash_val],
+				 net, pkey, key_len, dev);
+}
+EXPORT_SYMBOL_GPL(__pneigh_lookup);
+
+struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
+				    struct net *net, const void *pkey,
+				    struct net_device *dev, int creat)
+{
+	struct pneigh_entry *n;
+	int key_len = tbl->key_len;
+	u32 hash_val = pneigh_hash(pkey, key_len);
+
+	read_lock_bh(&tbl->lock);
+	n = __pneigh_lookup_1(tbl->phash_buckets[hash_val],
+			      net, pkey, key_len, dev);
+	read_unlock_bh(&tbl->lock);
+
+	if (n || !creat)
+		goto out;
+
+	ASSERT_RTNL();
+
+	n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
+	if (!n)
+		goto out;
+
+	write_pnet(&n->net, hold_net(net));
+	memcpy(n->key, pkey, key_len);
+	n->dev = dev;
+	if (dev)
+		dev_hold(dev);
+
+	if (tbl->pconstructor && tbl->pconstructor(n)) {
+		if (dev)
+			dev_put(dev);
+		release_net(net);
+		kfree(n);
+		n = NULL;
+		goto out;
+	}
+
+	write_lock_bh(&tbl->lock);
+	n->next = tbl->phash_buckets[hash_val];
+	tbl->phash_buckets[hash_val] = n;
+	write_unlock_bh(&tbl->lock);
+out:
+	return n;
+}
+EXPORT_SYMBOL(pneigh_lookup);
+
+
+int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *pkey,
+		  struct net_device *dev)
+{
+	struct pneigh_entry *n, **np;
+	int key_len = tbl->key_len;
+	u32 hash_val = pneigh_hash(pkey, key_len);
+
+	write_lock_bh(&tbl->lock);
+	for (np = &tbl->phash_buckets[hash_val]; (n = *np) != NULL;
+	     np = &n->next) {
+		if (!memcmp(n->key, pkey, key_len) && n->dev == dev &&
+		    net_eq(pneigh_net(n), net)) {
+			*np = n->next;
+			write_unlock_bh(&tbl->lock);
+			if (tbl->pdestructor)
+				tbl->pdestructor(n);
+			if (n->dev)
+				dev_put(n->dev);
+			release_net(pneigh_net(n));
+			kfree(n);
+			return 0;
+		}
+	}
+	write_unlock_bh(&tbl->lock);
+	return -ENOENT;
+}
+
+static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
+{
+	struct pneigh_entry *n, **np;
+	u32 h;
+
+	for (h = 0; h <= PNEIGH_HASHMASK; h++) {
+		np = &tbl->phash_buckets[h];
+		while ((n = *np) != NULL) {
+			if (!dev || n->dev == dev) {
+				*np = n->next;
+				if (tbl->pdestructor)
+					tbl->pdestructor(n);
+				if (n->dev)
+					dev_put(n->dev);
+				release_net(pneigh_net(n));
+				kfree(n);
+				continue;
+			}
+			np = &n->next;
+		}
+	}
+	return -ENOENT;
+}
+
+static void neigh_parms_destroy(struct neigh_parms *parms);
+
+static inline void neigh_parms_put(struct neigh_parms *parms)
+{
+	if (atomic_dec_and_test(&parms->refcnt))
+		neigh_parms_destroy(parms);
+}
+
+/*
+ *	neighbour must already be out of the table;
+ *
+ */
+void neigh_destroy(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+
+	NEIGH_CACHE_STAT_INC(neigh->tbl, destroys);
+
+	if (!neigh->dead) {
+		printk(KERN_WARNING
+		       "Destroying alive neighbour %p\n", neigh);
+		dump_stack();
+		return;
+	}
+
+	if (neigh_del_timer(neigh))
+		printk(KERN_WARNING "Impossible event.\n");
+
+	while ((hh = neigh->hh) != NULL) {
+		neigh->hh = hh->hh_next;
+		hh->hh_next = NULL;
+
+		write_seqlock_bh(&hh->hh_lock);
+		hh->hh_output = neigh_blackhole;
+		write_sequnlock_bh(&hh->hh_lock);
+		if (atomic_dec_and_test(&hh->hh_refcnt))
+			kfree(hh);
+	}
+
+	skb_queue_purge(&neigh->arp_queue);
+
+	dev_put(neigh->dev);
+	neigh_parms_put(neigh->parms);
+
+	NEIGH_PRINTK2("neigh %p is destroyed.\n", neigh);
+
+	atomic_dec(&neigh->tbl->entries);
+	kmem_cache_free(neigh->tbl->kmem_cachep, neigh);
+}
+EXPORT_SYMBOL(neigh_destroy);
+
+/* Neighbour state is suspicious;
+   disable fast path.
+
+   Called with write_locked neigh.
+ */
+static void neigh_suspect(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+
+	NEIGH_PRINTK2("neigh %p is suspected.\n", neigh);
+
+	neigh->output = neigh->ops->output;
+
+	for (hh = neigh->hh; hh; hh = hh->hh_next)
+		hh->hh_output = neigh->ops->output;
+}
+
+/* Neighbour state is OK;
+   enable fast path.
+
+   Called with write_locked neigh.
+ */
+static void neigh_connect(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+
+	NEIGH_PRINTK2("neigh %p is connected.\n", neigh);
+
+	neigh->output = neigh->ops->connected_output;
+
+	for (hh = neigh->hh; hh; hh = hh->hh_next)
+		hh->hh_output = neigh->ops->hh_output;
+}
+
+static void neigh_periodic_timer(unsigned long arg)
+{
+	struct neigh_table *tbl = (struct neigh_table *)arg;
+	struct neighbour *n, **np;
+	unsigned long expire, now = jiffies;
+
+	NEIGH_CACHE_STAT_INC(tbl, periodic_gc_runs);
+
+	write_lock(&tbl->lock);
+
+	/*
+	 *	periodically recompute ReachableTime from random function
+	 */
+
+	if (time_after(now, tbl->last_rand + 300 * HZ)) {
+		struct neigh_parms *p;
+		tbl->last_rand = now;
+		for (p = &tbl->parms; p; p = p->next)
+			p->reachable_time =
+				neigh_rand_reach_time(p->base_reachable_time);
+	}
+
+	np = &tbl->hash_buckets[tbl->hash_chain_gc];
+	tbl->hash_chain_gc = ((tbl->hash_chain_gc + 1) & tbl->hash_mask);
+
+	while ((n = *np) != NULL) {
+		unsigned int state;
+
+		write_lock(&n->lock);
+
+		state = n->nud_state;
+		if (state & (NUD_PERMANENT | NUD_IN_TIMER)) {
+			write_unlock(&n->lock);
+			goto next_elt;
+		}
+
+		if (time_before(n->used, n->confirmed))
+			n->used = n->confirmed;
+
+		if (atomic_read(&n->refcnt) == 1 &&
+		    (state == NUD_FAILED ||
+		     time_after(now, n->used + n->parms->gc_staletime))) {
+			*np = n->next;
+			n->dead = 1;
+			write_unlock(&n->lock);
+			neigh_cleanup_and_release(n);
+			continue;
+		}
+		write_unlock(&n->lock);
+
+next_elt:
+		np = &n->next;
+	}
+
+	/* Cycle through all hash buckets every base_reachable_time/2 ticks.
+	 * ARP entry timeouts range from 1/2 base_reachable_time to 3/2
+	 * base_reachable_time.
+	 */
+	expire = tbl->parms.base_reachable_time >> 1;
+	expire /= (tbl->hash_mask + 1);
+	if (!expire)
+		expire = 1;
+
+	if (expire>HZ)
+		mod_timer(&tbl->gc_timer, round_jiffies(now + expire));
+	else
+		mod_timer(&tbl->gc_timer, now + expire);
+
+	write_unlock(&tbl->lock);
+}
+
+static __inline__ int neigh_max_probes(struct neighbour *n)
+{
+	struct neigh_parms *p = n->parms;
+	return (n->nud_state & NUD_PROBE ?
+		p->ucast_probes :
+		p->ucast_probes + p->app_probes + p->mcast_probes);
+}
+
+/* Called when a timer expires for a neighbour entry. */
+
+static void neigh_timer_handler(unsigned long arg)
+{
+	unsigned long now, next;
+	struct neighbour *neigh = (struct neighbour *)arg;
+	unsigned state;
+	int notify = 0;
+
+	write_lock(&neigh->lock);
+
+	state = neigh->nud_state;
+	now = jiffies;
+	next = now + HZ;
+
+	if (!(state & NUD_IN_TIMER)) {
+#ifndef CONFIG_SMP
+		printk(KERN_WARNING "neigh: timer & !nud_in_timer\n");
+#endif
+		goto out;
+	}
+
+	if (state & NUD_REACHABLE) {
+		if (time_before_eq(now,
+				   neigh->confirmed + neigh->parms->reachable_time)) {
+			NEIGH_PRINTK2("neigh %p is still alive.\n", neigh);
+			next = neigh->confirmed + neigh->parms->reachable_time;
+		} else if (time_before_eq(now,
+					  neigh->used + neigh->parms->delay_probe_time)) {
+			NEIGH_PRINTK2("neigh %p is delayed.\n", neigh);
+			neigh->nud_state = NUD_DELAY;
+			neigh->updated = jiffies;
+			neigh_suspect(neigh);
+			next = now + neigh->parms->delay_probe_time;
+		} else {
+			NEIGH_PRINTK2("neigh %p is suspected.\n", neigh);
+			neigh->nud_state = NUD_STALE;
+			neigh->updated = jiffies;
+			neigh_suspect(neigh);
+			notify = 1;
+		}
+	} else if (state & NUD_DELAY) {
+		if (time_before_eq(now,
+				   neigh->confirmed + neigh->parms->delay_probe_time)) {
+			NEIGH_PRINTK2("neigh %p is now reachable.\n", neigh);
+			neigh->nud_state = NUD_REACHABLE;
+			neigh->updated = jiffies;
+			neigh_connect(neigh);
+			notify = 1;
+			next = neigh->confirmed + neigh->parms->reachable_time;
+		} else {
+			NEIGH_PRINTK2("neigh %p is probed.\n", neigh);
+			neigh->nud_state = NUD_PROBE;
+			neigh->updated = jiffies;
+			atomic_set(&neigh->probes, 0);
+			next = now + neigh->parms->retrans_time;
+		}
+	} else {
+		/* NUD_PROBE|NUD_INCOMPLETE */
+		next = now + neigh->parms->retrans_time;
+	}
+
+	if ((neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) &&
+	    atomic_read(&neigh->probes) >= neigh_max_probes(neigh)) {
+		struct sk_buff *skb;
+
+		neigh->nud_state = NUD_FAILED;
+		neigh->updated = jiffies;
+		notify = 1;
+		NEIGH_CACHE_STAT_INC(neigh->tbl, res_failed);
+		NEIGH_PRINTK2("neigh %p is failed.\n", neigh);
+
+		/* It is very thin place. report_unreachable is very complicated
+		   routine. Particularly, it can hit the same neighbour entry!
+
+		   So that, we try to be accurate and avoid dead loop. --ANK
+		 */
+		while (neigh->nud_state == NUD_FAILED &&
+		       (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
+			write_unlock(&neigh->lock);
+			neigh->ops->error_report(neigh, skb);
+			write_lock(&neigh->lock);
+		}
+		skb_queue_purge(&neigh->arp_queue);
+	}
+
+	if (neigh->nud_state & NUD_IN_TIMER) {
+		if (time_before(next, jiffies + HZ/2))
+			next = jiffies + HZ/2;
+		if (!mod_timer(&neigh->timer, next))
+			neigh_hold(neigh);
+	}
+	if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) {
+		struct sk_buff *skb = skb_peek(&neigh->arp_queue);
+		/* keep skb alive even if arp_queue overflows */
+		if (skb)
+			skb = skb_copy(skb, GFP_ATOMIC);
+		write_unlock(&neigh->lock);
+		neigh->ops->solicit(neigh, skb);
+		atomic_inc(&neigh->probes);
+		if (skb)
+			kfree_skb(skb);
+	} else {
+out:
+		write_unlock(&neigh->lock);
+	}
+
+	if (notify)
+		neigh_update_notify(neigh);
+
+	neigh_release(neigh);
+}
+
+int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+{
+	int rc;
+	unsigned long now;
+
+	write_lock_bh(&neigh->lock);
+
+	rc = 0;
+	if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
+		goto out_unlock_bh;
+
+	now = jiffies;
+
+	if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
+		if (neigh->parms->mcast_probes + neigh->parms->app_probes) {
+			atomic_set(&neigh->probes, neigh->parms->ucast_probes);
+			neigh->nud_state     = NUD_INCOMPLETE;
+			neigh->updated = jiffies;
+			neigh_add_timer(neigh, now + 1);
+		} else {
+			neigh->nud_state = NUD_FAILED;
+			neigh->updated = jiffies;
+			write_unlock_bh(&neigh->lock);
+
+			if (skb)
+				kfree_skb(skb);
+			return 1;
+		}
+	} else if (neigh->nud_state & NUD_STALE) {
+		NEIGH_PRINTK2("neigh %p is delayed.\n", neigh);
+		neigh->nud_state = NUD_DELAY;
+		neigh->updated = jiffies;
+		neigh_add_timer(neigh,
+				jiffies + neigh->parms->delay_probe_time);
+	}
+
+	if (neigh->nud_state == NUD_INCOMPLETE) {
+		if (skb) {
+			if (skb_queue_len(&neigh->arp_queue) >=
+			    neigh->parms->queue_len) {
+				struct sk_buff *buff;
+				buff = __skb_dequeue(&neigh->arp_queue);
+				kfree_skb(buff);
+				NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards);
+			}
+			__skb_queue_tail(&neigh->arp_queue, skb);
+		}
+		rc = 1;
+	}
+out_unlock_bh:
+	write_unlock_bh(&neigh->lock);
+	return rc;
+}
+EXPORT_SYMBOL(__neigh_event_send);
+
+static void neigh_update_hhs(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+	void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *)
+		= neigh->dev->header_ops->cache_update;
+
+	if (update) {
+		for (hh = neigh->hh; hh; hh = hh->hh_next) {
+			write_seqlock_bh(&hh->hh_lock);
+			update(hh, neigh->dev, neigh->ha);
+			write_sequnlock_bh(&hh->hh_lock);
+		}
+	}
+}
+
+
+
+/* Generic update routine.
+   -- lladdr is new lladdr or NULL, if it is not supplied.
+   -- new    is new state.
+   -- flags
+	NEIGH_UPDATE_F_OVERRIDE allows to override existing lladdr,
+				if it is different.
+	NEIGH_UPDATE_F_WEAK_OVERRIDE will suspect existing "connected"
+				lladdr instead of overriding it
+				if it is different.
+				It also allows to retain current state
+				if lladdr is unchanged.
+	NEIGH_UPDATE_F_ADMIN	means that the change is administrative.
+
+	NEIGH_UPDATE_F_OVERRIDE_ISROUTER allows to override existing
+				NTF_ROUTER flag.
+	NEIGH_UPDATE_F_ISROUTER	indicates if the neighbour is known as
+				a router.
+
+   Caller MUST hold reference count on the entry.
+ */
+
+int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+		 u32 flags)
+{
+	u8 old;
+	int err;
+	int notify = 0;
+	struct net_device *dev;
+	int update_isrouter = 0;
+
+	write_lock_bh(&neigh->lock);
+
+	dev    = neigh->dev;
+	old    = neigh->nud_state;
+	err    = -EPERM;
+
+	if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
+	    (old & (NUD_NOARP | NUD_PERMANENT)))
+		goto out;
+
+	if (!(new & NUD_VALID)) {
+		neigh_del_timer(neigh);
+		if (old & NUD_CONNECTED)
+			neigh_suspect(neigh);
+		neigh->nud_state = new;
+		err = 0;
+		notify = old & NUD_VALID;
+		goto out;
+	}
+
+	/* Compare new lladdr with cached one */
+	if (!dev->addr_len) {
+		/* First case: device needs no address. */
+		lladdr = neigh->ha;
+	} else if (lladdr) {
+		/* The second case: if something is already cached
+		   and a new address is proposed:
+		   - compare new & old
+		   - if they are different, check override flag
+		 */
+		if ((old & NUD_VALID) &&
+		    !memcmp(lladdr, neigh->ha, dev->addr_len))
+			lladdr = neigh->ha;
+	} else {
+		/* No address is supplied; if we know something,
+		   use it, otherwise discard the request.
+		 */
+		err = -EINVAL;
+		if (!(old & NUD_VALID))
+			goto out;
+		lladdr = neigh->ha;
+	}
+
+	if (new & NUD_CONNECTED)
+		neigh->confirmed = jiffies;
+	neigh->updated = jiffies;
+
+	/* If entry was valid and address is not changed,
+	   do not change entry state, if new one is STALE.
+	 */
+	err = 0;
+	update_isrouter = flags & NEIGH_UPDATE_F_OVERRIDE_ISROUTER;
+	if (old & NUD_VALID) {
+		if (lladdr != neigh->ha && !(flags & NEIGH_UPDATE_F_OVERRIDE)) {
+			update_isrouter = 0;
+			if ((flags & NEIGH_UPDATE_F_WEAK_OVERRIDE) &&
+			    (old & NUD_CONNECTED)) {
+				lladdr = neigh->ha;
+				new = NUD_STALE;
+			} else
+				goto out;
+		} else {
+			if (lladdr == neigh->ha && new == NUD_STALE &&
+			    ((flags & NEIGH_UPDATE_F_WEAK_OVERRIDE) ||
+			     (old & NUD_CONNECTED))
+			    )
+				new = old;
+		}
+	}
+
+	if (new != old) {
+		neigh_del_timer(neigh);
+		if (new & NUD_IN_TIMER)
+			neigh_add_timer(neigh, (jiffies +
+						((new & NUD_REACHABLE) ?
+						 neigh->parms->reachable_time :
+						 0)));
+		neigh->nud_state = new;
+	}
+
+	if (lladdr != neigh->ha) {
+		memcpy(&neigh->ha, lladdr, dev->addr_len);
+		neigh_update_hhs(neigh);
+		if (!(new & NUD_CONNECTED))
+			neigh->confirmed = jiffies -
+				      (neigh->parms->base_reachable_time << 1);
+		notify = 1;
+	}
+	if (new == old)
+		goto out;
+	if (new & NUD_CONNECTED)
+		neigh_connect(neigh);
+	else
+		neigh_suspect(neigh);
+	if (!(old & NUD_VALID)) {
+		struct sk_buff *skb;
+
+		/* Again: avoid dead loop if something went wrong */
+
+		while (neigh->nud_state & NUD_VALID &&
+		       (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
+			struct neighbour *n1 = neigh;
+			write_unlock_bh(&neigh->lock);
+			/* On shaper/eql skb->dst->neighbour != neigh :( */
+			if (skb->dst && skb->dst->neighbour)
+				n1 = skb->dst->neighbour;
+			n1->output(skb);
+			write_lock_bh(&neigh->lock);
+		}
+		skb_queue_purge(&neigh->arp_queue);
+	}
+out:
+	if (update_isrouter) {
+		neigh->flags = (flags & NEIGH_UPDATE_F_ISROUTER) ?
+			(neigh->flags | NTF_ROUTER) :
+			(neigh->flags & ~NTF_ROUTER);
+	}
+	write_unlock_bh(&neigh->lock);
+
+	if (notify)
+		neigh_update_notify(neigh);
+
+	return err;
+}
+EXPORT_SYMBOL(neigh_update);
+
+struct neighbour *neigh_event_ns(struct neigh_table *tbl,
+				 u8 *lladdr, void *saddr,
+				 struct net_device *dev)
+{
+	struct neighbour *neigh = __neigh_lookup(tbl, saddr, dev,
+						 lladdr || !dev->addr_len);
+	if (neigh)
+		neigh_update(neigh, lladdr, NUD_STALE,
+			     NEIGH_UPDATE_F_OVERRIDE);
+	return neigh;
+}
+EXPORT_SYMBOL(neigh_event_ns);
+
+static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst,
+			  __be16 protocol)
+{
+	struct hh_cache	*hh;
+	struct net_device *dev = dst->dev;
+
+	for (hh = n->hh; hh; hh = hh->hh_next)
+		if (hh->hh_type == protocol)
+			break;
+
+	if (!hh && (hh = kzalloc(sizeof(*hh), GFP_ATOMIC)) != NULL) {
+		seqlock_init(&hh->hh_lock);
+		hh->hh_type = protocol;
+		atomic_set(&hh->hh_refcnt, 0);
+		hh->hh_next = NULL;
+
+		if (dev->header_ops->cache(n, hh)) {
+			kfree(hh);
+			hh = NULL;
+		} else {
+			atomic_inc(&hh->hh_refcnt);
+			hh->hh_next = n->hh;
+			n->hh	    = hh;
+			if (n->nud_state & NUD_CONNECTED)
+				hh->hh_output = n->ops->hh_output;
+			else
+				hh->hh_output = n->ops->output;
+		}
+	}
+	if (hh)	{
+		atomic_inc(&hh->hh_refcnt);
+		dst->hh = hh;
+	}
+}
+
+/* This function can be used in contexts, where only old dev_queue_xmit
+   worked, f.e. if you want to override normal output path (eql, shaper),
+   but resolution is not made yet.
+ */
+
+int neigh_compat_output(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+
+	__skb_pull(skb, skb_network_offset(skb));
+
+	if (dev_hard_header(skb, dev, ntohs(skb->protocol), NULL, NULL,
+			    skb->len) < 0 &&
+	    dev->header_ops->rebuild(skb))
+		return 0;
+
+	return dev_queue_xmit(skb);
+}
+EXPORT_SYMBOL(neigh_compat_output);
+
+/* Slow and careful. */
+
+int neigh_resolve_output(struct sk_buff *skb)
+{
+	struct dst_entry *dst = skb->dst;
+	struct neighbour *neigh;
+	int rc = 0;
+
+	if (!dst || !(neigh = dst->neighbour))
+		goto discard;
+
+	__skb_pull(skb, skb_network_offset(skb));
+
+	if (!neigh_event_send(neigh, skb)) {
+		int err;
+		struct net_device *dev = neigh->dev;
+		if (dev->header_ops->cache && !dst->hh) {
+			write_lock_bh(&neigh->lock);
+			if (!dst->hh)
+				neigh_hh_init(neigh, dst, dst->ops->protocol);
+			err = dev_hard_header(skb, dev, ntohs(skb->protocol),
+					      neigh->ha, NULL, skb->len);
+			write_unlock_bh(&neigh->lock);
+		} else {
+			read_lock_bh(&neigh->lock);
+			err = dev_hard_header(skb, dev, ntohs(skb->protocol),
+					      neigh->ha, NULL, skb->len);
+			read_unlock_bh(&neigh->lock);
+		}
+		if (err >= 0)
+			rc = neigh->ops->queue_xmit(skb);
+		else
+			goto out_kfree_skb;
+	}
+out:
+	return rc;
+discard:
+	NEIGH_PRINTK1("neigh_resolve_output: dst=%p neigh=%p\n",
+		      dst, dst ? dst->neighbour : NULL);
+out_kfree_skb:
+	rc = -EINVAL;
+	kfree_skb(skb);
+	goto out;
+}
+EXPORT_SYMBOL(neigh_resolve_output);
+
+/* As fast as possible without hh cache */
+
+int neigh_connected_output(struct sk_buff *skb)
+{
+	int err;
+	struct dst_entry *dst = skb->dst;
+	struct neighbour *neigh = dst->neighbour;
+	struct net_device *dev = neigh->dev;
+
+	__skb_pull(skb, skb_network_offset(skb));
+
+	read_lock_bh(&neigh->lock);
+	err = dev_hard_header(skb, dev, ntohs(skb->protocol),
+			      neigh->ha, NULL, skb->len);
+	read_unlock_bh(&neigh->lock);
+	if (err >= 0)
+		err = neigh->ops->queue_xmit(skb);
+	else {
+		err = -EINVAL;
+		kfree_skb(skb);
+	}
+	return err;
+}
+EXPORT_SYMBOL(neigh_connected_output);
+
+static void neigh_proxy_process(unsigned long arg)
+{
+	struct neigh_table *tbl = (struct neigh_table *)arg;
+	long sched_next = 0;
+	unsigned long now = jiffies;
+	struct sk_buff *skb, *n;
+
+	spin_lock(&tbl->proxy_queue.lock);
+
+	skb_queue_walk_safe(&tbl->proxy_queue, skb, n) {
+		long tdif = NEIGH_CB(skb)->sched_next - now;
+
+		if (tdif <= 0) {
+			struct net_device *dev = skb->dev;
+			__skb_unlink(skb, &tbl->proxy_queue);
+			if (tbl->proxy_redo && netif_running(dev))
+				tbl->proxy_redo(skb);
+			else
+				kfree_skb(skb);
+
+			dev_put(dev);
+		} else if (!sched_next || tdif < sched_next)
+			sched_next = tdif;
+	}
+	del_timer(&tbl->proxy_timer);
+	if (sched_next)
+		mod_timer(&tbl->proxy_timer, jiffies + sched_next);
+	spin_unlock(&tbl->proxy_queue.lock);
+}
+
+void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
+		    struct sk_buff *skb)
+{
+	unsigned long now = jiffies;
+	unsigned long sched_next = now + (net_random() % p->proxy_delay);
+
+	if (tbl->proxy_queue.qlen > p->proxy_qlen) {
+		kfree_skb(skb);
+		return;
+	}
+
+	NEIGH_CB(skb)->sched_next = sched_next;
+	NEIGH_CB(skb)->flags |= LOCALLY_ENQUEUED;
+
+	spin_lock(&tbl->proxy_queue.lock);
+	if (del_timer(&tbl->proxy_timer)) {
+		if (time_before(tbl->proxy_timer.expires, sched_next))
+			sched_next = tbl->proxy_timer.expires;
+	}
+	dst_release(skb->dst);
+	skb->dst = NULL;
+	dev_hold(skb->dev);
+	__skb_queue_tail(&tbl->proxy_queue, skb);
+	mod_timer(&tbl->proxy_timer, sched_next);
+	spin_unlock(&tbl->proxy_queue.lock);
+}
+EXPORT_SYMBOL(pneigh_enqueue);
+
+static inline struct neigh_parms *lookup_neigh_params(struct neigh_table *tbl,
+						      struct net *net, int ifindex)
+{
+	struct neigh_parms *p;
+
+	for (p = &tbl->parms; p; p = p->next) {
+		if ((p->dev && p->dev->ifindex == ifindex && net_eq(neigh_parms_net(p), net)) ||
+		    (!p->dev && !ifindex))
+			return p;
+	}
+
+	return NULL;
+}
+
+struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
+				      struct neigh_table *tbl)
+{
+	struct neigh_parms *p, *ref;
+	struct net *net = dev_net(dev);
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	ref = lookup_neigh_params(tbl, net, 0);
+	if (!ref)
+		return NULL;
+
+	p = kmemdup(ref, sizeof(*p), GFP_KERNEL);
+	if (p) {
+		p->tbl		  = tbl;
+		atomic_set(&p->refcnt, 1);
+		p->reachable_time =
+				neigh_rand_reach_time(p->base_reachable_time);
+
+		if (ops->ndo_neigh_setup && ops->ndo_neigh_setup(dev, p)) {
+			kfree(p);
+			return NULL;
+		}
+
+		dev_hold(dev);
+		p->dev = dev;
+		write_pnet(&p->net, hold_net(net));
+		p->sysctl_table = NULL;
+		write_lock_bh(&tbl->lock);
+		p->next		= tbl->parms.next;
+		tbl->parms.next = p;
+		write_unlock_bh(&tbl->lock);
+	}
+	return p;
+}
+EXPORT_SYMBOL(neigh_parms_alloc);
+
+static void neigh_rcu_free_parms(struct rcu_head *head)
+{
+	struct neigh_parms *parms =
+		container_of(head, struct neigh_parms, rcu_head);
+
+	neigh_parms_put(parms);
+}
+
+void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms)
+{
+	struct neigh_parms **p;
+
+	if (!parms || parms == &tbl->parms)
+		return;
+	write_lock_bh(&tbl->lock);
+	for (p = &tbl->parms.next; *p; p = &(*p)->next) {
+		if (*p == parms) {
+			*p = parms->next;
+			parms->dead = 1;
+			write_unlock_bh(&tbl->lock);
+			if (parms->dev)
+				dev_put(parms->dev);
+			call_rcu(&parms->rcu_head, neigh_rcu_free_parms);
+			return;
+		}
+	}
+	write_unlock_bh(&tbl->lock);
+	NEIGH_PRINTK1("neigh_parms_release: not found\n");
+}
+EXPORT_SYMBOL(neigh_parms_release);
+
+static void neigh_parms_destroy(struct neigh_parms *parms)
+{
+	release_net(neigh_parms_net(parms));
+	kfree(parms);
+}
+
+static struct lock_class_key neigh_table_proxy_queue_class;
+
+void neigh_table_init_no_netlink(struct neigh_table *tbl)
+{
+	unsigned long now = jiffies;
+	unsigned long phsize;
+
+	write_pnet(&tbl->parms.net, &init_net);
+	atomic_set(&tbl->parms.refcnt, 1);
+	tbl->parms.reachable_time =
+			  neigh_rand_reach_time(tbl->parms.base_reachable_time);
+
+	if (!tbl->kmem_cachep)
+		tbl->kmem_cachep =
+			kmem_cache_create(tbl->id, tbl->entry_size, 0,
+					  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+					  NULL);
+	tbl->stats = alloc_percpu(struct neigh_statistics);
+	if (!tbl->stats)
+		panic("cannot create neighbour cache statistics");
+
+#ifdef CONFIG_PROC_FS
+	if (!proc_create_data(tbl->id, 0, init_net.proc_net_stat,
+			      &neigh_stat_seq_fops, tbl))
+		panic("cannot create neighbour proc dir entry");
+#endif
+
+	tbl->hash_mask = 1;
+	tbl->hash_buckets = neigh_hash_alloc(tbl->hash_mask + 1);
+
+	phsize = (PNEIGH_HASHMASK + 1) * sizeof(struct pneigh_entry *);
+	tbl->phash_buckets = kzalloc(phsize, GFP_KERNEL);
+
+	if (!tbl->hash_buckets || !tbl->phash_buckets)
+		panic("cannot allocate neighbour cache hashes");
+
+	get_random_bytes(&tbl->hash_rnd, sizeof(tbl->hash_rnd));
+
+	rwlock_init(&tbl->lock);
+	setup_timer(&tbl->gc_timer, neigh_periodic_timer, (unsigned long)tbl);
+	tbl->gc_timer.expires  = now + 1;
+	add_timer(&tbl->gc_timer);
+
+	setup_timer(&tbl->proxy_timer, neigh_proxy_process, (unsigned long)tbl);
+	skb_queue_head_init_class(&tbl->proxy_queue,
+			&neigh_table_proxy_queue_class);
+
+	tbl->last_flush = now;
+	tbl->last_rand	= now + tbl->parms.reachable_time * 20;
+}
+EXPORT_SYMBOL(neigh_table_init_no_netlink);
+
+void neigh_table_init(struct neigh_table *tbl)
+{
+	struct neigh_table *tmp;
+
+	neigh_table_init_no_netlink(tbl);
+	write_lock(&neigh_tbl_lock);
+	for (tmp = neigh_tables; tmp; tmp = tmp->next) {
+		if (tmp->family == tbl->family)
+			break;
+	}
+	tbl->next	= neigh_tables;
+	neigh_tables	= tbl;
+	write_unlock(&neigh_tbl_lock);
+
+	if (unlikely(tmp)) {
+		printk(KERN_ERR "NEIGH: Registering multiple tables for "
+		       "family %d\n", tbl->family);
+		dump_stack();
+	}
+}
+EXPORT_SYMBOL(neigh_table_init);
+
+int neigh_table_clear(struct neigh_table *tbl)
+{
+	struct neigh_table **tp;
+
+	/* It is not clean... Fix it to unload IPv6 module safely */
+	del_timer_sync(&tbl->gc_timer);
+	del_timer_sync(&tbl->proxy_timer);
+	pneigh_queue_purge(&tbl->proxy_queue);
+	neigh_ifdown(tbl, NULL);
+	if (atomic_read(&tbl->entries))
+		printk(KERN_CRIT "neighbour leakage\n");
+	write_lock(&neigh_tbl_lock);
+	for (tp = &neigh_tables; *tp; tp = &(*tp)->next) {
+		if (*tp == tbl) {
+			*tp = tbl->next;
+			break;
+		}
+	}
+	write_unlock(&neigh_tbl_lock);
+
+	neigh_hash_free(tbl->hash_buckets, tbl->hash_mask + 1);
+	tbl->hash_buckets = NULL;
+
+	kfree(tbl->phash_buckets);
+	tbl->phash_buckets = NULL;
+
+	remove_proc_entry(tbl->id, init_net.proc_net_stat);
+
+	free_percpu(tbl->stats);
+	tbl->stats = NULL;
+
+	kmem_cache_destroy(tbl->kmem_cachep);
+	tbl->kmem_cachep = NULL;
+
+	return 0;
+}
+EXPORT_SYMBOL(neigh_table_clear);
+
+static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ndmsg *ndm;
+	struct nlattr *dst_attr;
+	struct neigh_table *tbl;
+	struct net_device *dev = NULL;
+	int err = -EINVAL;
+
+	if (nlmsg_len(nlh) < sizeof(*ndm))
+		goto out;
+
+	dst_attr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_DST);
+	if (dst_attr == NULL)
+		goto out;
+
+	ndm = nlmsg_data(nlh);
+	if (ndm->ndm_ifindex) {
+		dev = dev_get_by_index(net, ndm->ndm_ifindex);
+		if (dev == NULL) {
+			err = -ENODEV;
+			goto out;
+		}
+	}
+
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables; tbl; tbl = tbl->next) {
+		struct neighbour *neigh;
+
+		if (tbl->family != ndm->ndm_family)
+			continue;
+		read_unlock(&neigh_tbl_lock);
+
+		if (nla_len(dst_attr) < tbl->key_len)
+			goto out_dev_put;
+
+		if (ndm->ndm_flags & NTF_PROXY) {
+			err = pneigh_delete(tbl, net, nla_data(dst_attr), dev);
+			goto out_dev_put;
+		}
+
+		if (dev == NULL)
+			goto out_dev_put;
+
+		neigh = neigh_lookup(tbl, nla_data(dst_attr), dev);
+		if (neigh == NULL) {
+			err = -ENOENT;
+			goto out_dev_put;
+		}
+
+		err = neigh_update(neigh, NULL, NUD_FAILED,
+				   NEIGH_UPDATE_F_OVERRIDE |
+				   NEIGH_UPDATE_F_ADMIN);
+		neigh_release(neigh);
+		goto out_dev_put;
+	}
+	read_unlock(&neigh_tbl_lock);
+	err = -EAFNOSUPPORT;
+
+out_dev_put:
+	if (dev)
+		dev_put(dev);
+out:
+	return err;
+}
+
+static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ndmsg *ndm;
+	struct nlattr *tb[NDA_MAX+1];
+	struct neigh_table *tbl;
+	struct net_device *dev = NULL;
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
+	if (err < 0)
+		goto out;
+
+	err = -EINVAL;
+	if (tb[NDA_DST] == NULL)
+		goto out;
+
+	ndm = nlmsg_data(nlh);
+	if (ndm->ndm_ifindex) {
+		dev = dev_get_by_index(net, ndm->ndm_ifindex);
+		if (dev == NULL) {
+			err = -ENODEV;
+			goto out;
+		}
+
+		if (tb[NDA_LLADDR] && nla_len(tb[NDA_LLADDR]) < dev->addr_len)
+			goto out_dev_put;
+	}
+
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables; tbl; tbl = tbl->next) {
+		int flags = NEIGH_UPDATE_F_ADMIN | NEIGH_UPDATE_F_OVERRIDE;
+		struct neighbour *neigh;
+		void *dst, *lladdr;
+
+		if (tbl->family != ndm->ndm_family)
+			continue;
+		read_unlock(&neigh_tbl_lock);
+
+		if (nla_len(tb[NDA_DST]) < tbl->key_len)
+			goto out_dev_put;
+		dst = nla_data(tb[NDA_DST]);
+		lladdr = tb[NDA_LLADDR] ? nla_data(tb[NDA_LLADDR]) : NULL;
+
+		if (ndm->ndm_flags & NTF_PROXY) {
+			struct pneigh_entry *pn;
+
+			err = -ENOBUFS;
+			pn = pneigh_lookup(tbl, net, dst, dev, 1);
+			if (pn) {
+				pn->flags = ndm->ndm_flags;
+				err = 0;
+			}
+			goto out_dev_put;
+		}
+
+		if (dev == NULL)
+			goto out_dev_put;
+
+		neigh = neigh_lookup(tbl, dst, dev);
+		if (neigh == NULL) {
+			if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
+				err = -ENOENT;
+				goto out_dev_put;
+			}
+
+			neigh = __neigh_lookup_errno(tbl, dst, dev);
+			if (IS_ERR(neigh)) {
+				err = PTR_ERR(neigh);
+				goto out_dev_put;
+			}
+		} else {
+			if (nlh->nlmsg_flags & NLM_F_EXCL) {
+				err = -EEXIST;
+				neigh_release(neigh);
+				goto out_dev_put;
+			}
+
+			if (!(nlh->nlmsg_flags & NLM_F_REPLACE))
+				flags &= ~NEIGH_UPDATE_F_OVERRIDE;
+		}
+
+		err = neigh_update(neigh, lladdr, ndm->ndm_state, flags);
+		neigh_release(neigh);
+		goto out_dev_put;
+	}
+
+	read_unlock(&neigh_tbl_lock);
+	err = -EAFNOSUPPORT;
+
+out_dev_put:
+	if (dev)
+		dev_put(dev);
+out:
+	return err;
+}
+
+static int neightbl_fill_parms(struct sk_buff *skb, struct neigh_parms *parms)
+{
+	struct nlattr *nest;
+
+	nest = nla_nest_start(skb, NDTA_PARMS);
+	if (nest == NULL)
+		return -ENOBUFS;
+
+	if (parms->dev)
+		NLA_PUT_U32(skb, NDTPA_IFINDEX, parms->dev->ifindex);
+
+	NLA_PUT_U32(skb, NDTPA_REFCNT, atomic_read(&parms->refcnt));
+	NLA_PUT_U32(skb, NDTPA_QUEUE_LEN, parms->queue_len);
+	NLA_PUT_U32(skb, NDTPA_PROXY_QLEN, parms->proxy_qlen);
+	NLA_PUT_U32(skb, NDTPA_APP_PROBES, parms->app_probes);
+	NLA_PUT_U32(skb, NDTPA_UCAST_PROBES, parms->ucast_probes);
+	NLA_PUT_U32(skb, NDTPA_MCAST_PROBES, parms->mcast_probes);
+	NLA_PUT_MSECS(skb, NDTPA_REACHABLE_TIME, parms->reachable_time);
+	NLA_PUT_MSECS(skb, NDTPA_BASE_REACHABLE_TIME,
+		      parms->base_reachable_time);
+	NLA_PUT_MSECS(skb, NDTPA_GC_STALETIME, parms->gc_staletime);
+	NLA_PUT_MSECS(skb, NDTPA_DELAY_PROBE_TIME, parms->delay_probe_time);
+	NLA_PUT_MSECS(skb, NDTPA_RETRANS_TIME, parms->retrans_time);
+	NLA_PUT_MSECS(skb, NDTPA_ANYCAST_DELAY, parms->anycast_delay);
+	NLA_PUT_MSECS(skb, NDTPA_PROXY_DELAY, parms->proxy_delay);
+	NLA_PUT_MSECS(skb, NDTPA_LOCKTIME, parms->locktime);
+
+	return nla_nest_end(skb, nest);
+
+nla_put_failure:
+	nla_nest_cancel(skb, nest);
+	return -EMSGSIZE;
+}
+
+static int neightbl_fill_info(struct sk_buff *skb, struct neigh_table *tbl,
+			      u32 pid, u32 seq, int type, int flags)
+{
+	struct nlmsghdr *nlh;
+	struct ndtmsg *ndtmsg;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ndtmsg = nlmsg_data(nlh);
+
+	read_lock_bh(&tbl->lock);
+	ndtmsg->ndtm_family = tbl->family;
+	ndtmsg->ndtm_pad1   = 0;
+	ndtmsg->ndtm_pad2   = 0;
+
+	NLA_PUT_STRING(skb, NDTA_NAME, tbl->id);
+	NLA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
+	NLA_PUT_U32(skb, NDTA_THRESH1, tbl->gc_thresh1);
+	NLA_PUT_U32(skb, NDTA_THRESH2, tbl->gc_thresh2);
+	NLA_PUT_U32(skb, NDTA_THRESH3, tbl->gc_thresh3);
+
+	{
+		unsigned long now = jiffies;
+		unsigned int flush_delta = now - tbl->last_flush;
+		unsigned int rand_delta = now - tbl->last_rand;
+
+		struct ndt_config ndc = {
+			.ndtc_key_len		= tbl->key_len,
+			.ndtc_entry_size	= tbl->entry_size,
+			.ndtc_entries		= atomic_read(&tbl->entries),
+			.ndtc_last_flush	= jiffies_to_msecs(flush_delta),
+			.ndtc_last_rand		= jiffies_to_msecs(rand_delta),
+			.ndtc_hash_rnd		= tbl->hash_rnd,
+			.ndtc_hash_mask		= tbl->hash_mask,
+			.ndtc_hash_chain_gc	= tbl->hash_chain_gc,
+			.ndtc_proxy_qlen	= tbl->proxy_queue.qlen,
+		};
+
+		NLA_PUT(skb, NDTA_CONFIG, sizeof(ndc), &ndc);
+	}
+
+	{
+		int cpu;
+		struct ndt_stats ndst;
+
+		memset(&ndst, 0, sizeof(ndst));
+
+		for_each_possible_cpu(cpu) {
+			struct neigh_statistics	*st;
+
+			st = per_cpu_ptr(tbl->stats, cpu);
+			ndst.ndts_allocs		+= st->allocs;
+			ndst.ndts_destroys		+= st->destroys;
+			ndst.ndts_hash_grows		+= st->hash_grows;
+			ndst.ndts_res_failed		+= st->res_failed;
+			ndst.ndts_lookups		+= st->lookups;
+			ndst.ndts_hits			+= st->hits;
+			ndst.ndts_rcv_probes_mcast	+= st->rcv_probes_mcast;
+			ndst.ndts_rcv_probes_ucast	+= st->rcv_probes_ucast;
+			ndst.ndts_periodic_gc_runs	+= st->periodic_gc_runs;
+			ndst.ndts_forced_gc_runs	+= st->forced_gc_runs;
+		}
+
+		NLA_PUT(skb, NDTA_STATS, sizeof(ndst), &ndst);
+	}
+
+	BUG_ON(tbl->parms.dev);
+	if (neightbl_fill_parms(skb, &tbl->parms) < 0)
+		goto nla_put_failure;
+
+	read_unlock_bh(&tbl->lock);
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	read_unlock_bh(&tbl->lock);
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static int neightbl_fill_param_info(struct sk_buff *skb,
+				    struct neigh_table *tbl,
+				    struct neigh_parms *parms,
+				    u32 pid, u32 seq, int type,
+				    unsigned int flags)
+{
+	struct ndtmsg *ndtmsg;
+	struct nlmsghdr *nlh;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ndtmsg = nlmsg_data(nlh);
+
+	read_lock_bh(&tbl->lock);
+	ndtmsg->ndtm_family = tbl->family;
+	ndtmsg->ndtm_pad1   = 0;
+	ndtmsg->ndtm_pad2   = 0;
+
+	if (nla_put_string(skb, NDTA_NAME, tbl->id) < 0 ||
+	    neightbl_fill_parms(skb, parms) < 0)
+		goto errout;
+
+	read_unlock_bh(&tbl->lock);
+	return nlmsg_end(skb, nlh);
+errout:
+	read_unlock_bh(&tbl->lock);
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static const struct nla_policy nl_neightbl_policy[NDTA_MAX+1] = {
+	[NDTA_NAME]		= { .type = NLA_STRING },
+	[NDTA_THRESH1]		= { .type = NLA_U32 },
+	[NDTA_THRESH2]		= { .type = NLA_U32 },
+	[NDTA_THRESH3]		= { .type = NLA_U32 },
+	[NDTA_GC_INTERVAL]	= { .type = NLA_U64 },
+	[NDTA_PARMS]		= { .type = NLA_NESTED },
+};
+
+static const struct nla_policy nl_ntbl_parm_policy[NDTPA_MAX+1] = {
+	[NDTPA_IFINDEX]			= { .type = NLA_U32 },
+	[NDTPA_QUEUE_LEN]		= { .type = NLA_U32 },
+	[NDTPA_PROXY_QLEN]		= { .type = NLA_U32 },
+	[NDTPA_APP_PROBES]		= { .type = NLA_U32 },
+	[NDTPA_UCAST_PROBES]		= { .type = NLA_U32 },
+	[NDTPA_MCAST_PROBES]		= { .type = NLA_U32 },
+	[NDTPA_BASE_REACHABLE_TIME]	= { .type = NLA_U64 },
+	[NDTPA_GC_STALETIME]		= { .type = NLA_U64 },
+	[NDTPA_DELAY_PROBE_TIME]	= { .type = NLA_U64 },
+	[NDTPA_RETRANS_TIME]		= { .type = NLA_U64 },
+	[NDTPA_ANYCAST_DELAY]		= { .type = NLA_U64 },
+	[NDTPA_PROXY_DELAY]		= { .type = NLA_U64 },
+	[NDTPA_LOCKTIME]		= { .type = NLA_U64 },
+};
+
+static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct neigh_table *tbl;
+	struct ndtmsg *ndtmsg;
+	struct nlattr *tb[NDTA_MAX+1];
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ndtmsg), tb, NDTA_MAX,
+			  nl_neightbl_policy);
+	if (err < 0)
+		goto errout;
+
+	if (tb[NDTA_NAME] == NULL) {
+		err = -EINVAL;
+		goto errout;
+	}
+
+	ndtmsg = nlmsg_data(nlh);
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables; tbl; tbl = tbl->next) {
+		if (ndtmsg->ndtm_family && tbl->family != ndtmsg->ndtm_family)
+			continue;
+
+		if (nla_strcmp(tb[NDTA_NAME], tbl->id) == 0)
+			break;
+	}
+
+	if (tbl == NULL) {
+		err = -ENOENT;
+		goto errout_locked;
+	}
+
+	/*
+	 * We acquire tbl->lock to be nice to the periodic timers and
+	 * make sure they always see a consistent set of values.
+	 */
+	write_lock_bh(&tbl->lock);
+
+	if (tb[NDTA_PARMS]) {
+		struct nlattr *tbp[NDTPA_MAX+1];
+		struct neigh_parms *p;
+		int i, ifindex = 0;
+
+		err = nla_parse_nested(tbp, NDTPA_MAX, tb[NDTA_PARMS],
+				       nl_ntbl_parm_policy);
+		if (err < 0)
+			goto errout_tbl_lock;
+
+		if (tbp[NDTPA_IFINDEX])
+			ifindex = nla_get_u32(tbp[NDTPA_IFINDEX]);
+
+		p = lookup_neigh_params(tbl, net, ifindex);
+		if (p == NULL) {
+			err = -ENOENT;
+			goto errout_tbl_lock;
+		}
+
+		for (i = 1; i <= NDTPA_MAX; i++) {
+			if (tbp[i] == NULL)
+				continue;
+
+			switch (i) {
+			case NDTPA_QUEUE_LEN:
+				p->queue_len = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_PROXY_QLEN:
+				p->proxy_qlen = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_APP_PROBES:
+				p->app_probes = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_UCAST_PROBES:
+				p->ucast_probes = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_MCAST_PROBES:
+				p->mcast_probes = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_BASE_REACHABLE_TIME:
+				p->base_reachable_time = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_GC_STALETIME:
+				p->gc_staletime = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_DELAY_PROBE_TIME:
+				p->delay_probe_time = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_RETRANS_TIME:
+				p->retrans_time = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_ANYCAST_DELAY:
+				p->anycast_delay = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_PROXY_DELAY:
+				p->proxy_delay = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_LOCKTIME:
+				p->locktime = nla_get_msecs(tbp[i]);
+				break;
+			}
+		}
+	}
+
+	if (tb[NDTA_THRESH1])
+		tbl->gc_thresh1 = nla_get_u32(tb[NDTA_THRESH1]);
+
+	if (tb[NDTA_THRESH2])
+		tbl->gc_thresh2 = nla_get_u32(tb[NDTA_THRESH2]);
+
+	if (tb[NDTA_THRESH3])
+		tbl->gc_thresh3 = nla_get_u32(tb[NDTA_THRESH3]);
+
+	if (tb[NDTA_GC_INTERVAL])
+		tbl->gc_interval = nla_get_msecs(tb[NDTA_GC_INTERVAL]);
+
+	err = 0;
+
+errout_tbl_lock:
+	write_unlock_bh(&tbl->lock);
+errout_locked:
+	read_unlock(&neigh_tbl_lock);
+errout:
+	return err;
+}
+
+static int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct net *net = sock_net(skb->sk);
+	int family, tidx, nidx = 0;
+	int tbl_skip = cb->args[0];
+	int neigh_skip = cb->args[1];
+	struct neigh_table *tbl;
+
+	family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
+
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables, tidx = 0; tbl; tbl = tbl->next, tidx++) {
+		struct neigh_parms *p;
+
+		if (tidx < tbl_skip || (family && tbl->family != family))
+			continue;
+
+		if (neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).pid,
+				       cb->nlh->nlmsg_seq, RTM_NEWNEIGHTBL,
+				       NLM_F_MULTI) <= 0)
+			break;
+
+		for (nidx = 0, p = tbl->parms.next; p; p = p->next) {
+			if (!net_eq(neigh_parms_net(p), net))
+				continue;
+
+			if (nidx < neigh_skip)
+				goto next;
+
+			if (neightbl_fill_param_info(skb, tbl, p,
+						     NETLINK_CB(cb->skb).pid,
+						     cb->nlh->nlmsg_seq,
+						     RTM_NEWNEIGHTBL,
+						     NLM_F_MULTI) <= 0)
+				goto out;
+		next:
+			nidx++;
+		}
+
+		neigh_skip = 0;
+	}
+out:
+	read_unlock(&neigh_tbl_lock);
+	cb->args[0] = tidx;
+	cb->args[1] = nidx;
+
+	return skb->len;
+}
+
+static int neigh_fill_info(struct sk_buff *skb, struct neighbour *neigh,
+			   u32 pid, u32 seq, int type, unsigned int flags)
+{
+	unsigned long now = jiffies;
+	struct nda_cacheinfo ci;
+	struct nlmsghdr *nlh;
+	struct ndmsg *ndm;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ndm = nlmsg_data(nlh);
+	ndm->ndm_family	 = neigh->ops->family;
+	ndm->ndm_pad1    = 0;
+	ndm->ndm_pad2    = 0;
+	ndm->ndm_flags	 = neigh->flags;
+	ndm->ndm_type	 = neigh->type;
+	ndm->ndm_ifindex = neigh->dev->ifindex;
+
+	NLA_PUT(skb, NDA_DST, neigh->tbl->key_len, neigh->primary_key);
+
+	read_lock_bh(&neigh->lock);
+	ndm->ndm_state	 = neigh->nud_state;
+	if ((neigh->nud_state & NUD_VALID) &&
+	    nla_put(skb, NDA_LLADDR, neigh->dev->addr_len, neigh->ha) < 0) {
+		read_unlock_bh(&neigh->lock);
+		goto nla_put_failure;
+	}
+
+	ci.ndm_used	 = jiffies_to_clock_t(now - neigh->used);
+	ci.ndm_confirmed = jiffies_to_clock_t(now - neigh->confirmed);
+	ci.ndm_updated	 = jiffies_to_clock_t(now - neigh->updated);
+	ci.ndm_refcnt	 = atomic_read(&neigh->refcnt) - 1;
+	read_unlock_bh(&neigh->lock);
+
+	NLA_PUT_U32(skb, NDA_PROBES, atomic_read(&neigh->probes));
+	NLA_PUT(skb, NDA_CACHEINFO, sizeof(ci), &ci);
+
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static void neigh_update_notify(struct neighbour *neigh)
+{
+	call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh);
+	__neigh_notify(neigh, RTM_NEWNEIGH, 0);
+}
+
+static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
+			    struct netlink_callback *cb)
+{
+	struct net * net = sock_net(skb->sk);
+	struct neighbour *n;
+	int rc, h, s_h = cb->args[1];
+	int idx, s_idx = idx = cb->args[2];
+
+	read_lock_bh(&tbl->lock);
+	for (h = 0; h <= tbl->hash_mask; h++) {
+		if (h < s_h)
+			continue;
+		if (h > s_h)
+			s_idx = 0;
+		for (n = tbl->hash_buckets[h], idx = 0; n; n = n->next) {
+			if (dev_net(n->dev) != net)
+				continue;
+			if (idx < s_idx)
+				goto next;
+			if (neigh_fill_info(skb, n, NETLINK_CB(cb->skb).pid,
+					    cb->nlh->nlmsg_seq,
+					    RTM_NEWNEIGH,
+					    NLM_F_MULTI) <= 0) {
+				read_unlock_bh(&tbl->lock);
+				rc = -1;
+				goto out;
+			}
+		next:
+			idx++;
+		}
+	}
+	read_unlock_bh(&tbl->lock);
+	rc = skb->len;
+out:
+	cb->args[1] = h;
+	cb->args[2] = idx;
+	return rc;
+}
+
+static int neigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct neigh_table *tbl;
+	int t, family, s_t;
+
+	read_lock(&neigh_tbl_lock);
+	family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
+	s_t = cb->args[0];
+
+	for (tbl = neigh_tables, t = 0; tbl; tbl = tbl->next, t++) {
+		if (t < s_t || (family && tbl->family != family))
+			continue;
+		if (t > s_t)
+			memset(&cb->args[1], 0, sizeof(cb->args) -
+						sizeof(cb->args[0]));
+		if (neigh_dump_table(tbl, skb, cb) < 0)
+			break;
+	}
+	read_unlock(&neigh_tbl_lock);
+
+	cb->args[0] = t;
+	return skb->len;
+}
+
+void neigh_for_each(struct neigh_table *tbl, void (*cb)(struct neighbour *, void *), void *cookie)
+{
+	int chain;
+
+	read_lock_bh(&tbl->lock);
+	for (chain = 0; chain <= tbl->hash_mask; chain++) {
+		struct neighbour *n;
+
+		for (n = tbl->hash_buckets[chain]; n; n = n->next)
+			cb(n, cookie);
+	}
+	read_unlock_bh(&tbl->lock);
+}
+EXPORT_SYMBOL(neigh_for_each);
+
+/* The tbl->lock must be held as a writer and BH disabled. */
+void __neigh_for_each_release(struct neigh_table *tbl,
+			      int (*cb)(struct neighbour *))
+{
+	int chain;
+
+	for (chain = 0; chain <= tbl->hash_mask; chain++) {
+		struct neighbour *n, **np;
+
+		np = &tbl->hash_buckets[chain];
+		while ((n = *np) != NULL) {
+			int release;
+
+			write_lock(&n->lock);
+			release = cb(n);
+			if (release) {
+				*np = n->next;
+				n->dead = 1;
+			} else
+				np = &n->next;
+			write_unlock(&n->lock);
+			if (release)
+				neigh_cleanup_and_release(n);
+		}
+	}
+}
+EXPORT_SYMBOL(__neigh_for_each_release);
+
+#ifdef CONFIG_PROC_FS
+
+static struct neighbour *neigh_get_first(struct seq_file *seq)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+	struct neighbour *n = NULL;
+	int bucket = state->bucket;
+
+	state->flags &= ~NEIGH_SEQ_IS_PNEIGH;
+	for (bucket = 0; bucket <= tbl->hash_mask; bucket++) {
+		n = tbl->hash_buckets[bucket];
+
+		while (n) {
+			if (!net_eq(dev_net(n->dev), net))
+				goto next;
+			if (state->neigh_sub_iter) {
+				loff_t fakep = 0;
+				void *v;
+
+				v = state->neigh_sub_iter(state, n, &fakep);
+				if (!v)
+					goto next;
+			}
+			if (!(state->flags & NEIGH_SEQ_SKIP_NOARP))
+				break;
+			if (n->nud_state & ~NUD_NOARP)
+				break;
+		next:
+			n = n->next;
+		}
+
+		if (n)
+			break;
+	}
+	state->bucket = bucket;
+
+	return n;
+}
+
+static struct neighbour *neigh_get_next(struct seq_file *seq,
+					struct neighbour *n,
+					loff_t *pos)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+
+	if (state->neigh_sub_iter) {
+		void *v = state->neigh_sub_iter(state, n, pos);
+		if (v)
+			return n;
+	}
+	n = n->next;
+
+	while (1) {
+		while (n) {
+			if (!net_eq(dev_net(n->dev), net))
+				goto next;
+			if (state->neigh_sub_iter) {
+				void *v = state->neigh_sub_iter(state, n, pos);
+				if (v)
+					return n;
+				goto next;
+			}
+			if (!(state->flags & NEIGH_SEQ_SKIP_NOARP))
+				break;
+
+			if (n->nud_state & ~NUD_NOARP)
+				break;
+		next:
+			n = n->next;
+		}
+
+		if (n)
+			break;
+
+		if (++state->bucket > tbl->hash_mask)
+			break;
+
+		n = tbl->hash_buckets[state->bucket];
+	}
+
+	if (n && pos)
+		--(*pos);
+	return n;
+}
+
+static struct neighbour *neigh_get_idx(struct seq_file *seq, loff_t *pos)
+{
+	struct neighbour *n = neigh_get_first(seq);
+
+	if (n) {
+		--(*pos);
+		while (*pos) {
+			n = neigh_get_next(seq, n, pos);
+			if (!n)
+				break;
+		}
+	}
+	return *pos ? NULL : n;
+}
+
+static struct pneigh_entry *pneigh_get_first(struct seq_file *seq)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+	struct pneigh_entry *pn = NULL;
+	int bucket = state->bucket;
+
+	state->flags |= NEIGH_SEQ_IS_PNEIGH;
+	for (bucket = 0; bucket <= PNEIGH_HASHMASK; bucket++) {
+		pn = tbl->phash_buckets[bucket];
+		while (pn && !net_eq(pneigh_net(pn), net))
+			pn = pn->next;
+		if (pn)
+			break;
+	}
+	state->bucket = bucket;
+
+	return pn;
+}
+
+static struct pneigh_entry *pneigh_get_next(struct seq_file *seq,
+					    struct pneigh_entry *pn,
+					    loff_t *pos)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+
+	pn = pn->next;
+	while (!pn) {
+		if (++state->bucket > PNEIGH_HASHMASK)
+			break;
+		pn = tbl->phash_buckets[state->bucket];
+		while (pn && !net_eq(pneigh_net(pn), net))
+			pn = pn->next;
+		if (pn)
+			break;
+	}
+
+	if (pn && pos)
+		--(*pos);
+
+	return pn;
+}
+
+static struct pneigh_entry *pneigh_get_idx(struct seq_file *seq, loff_t *pos)
+{
+	struct pneigh_entry *pn = pneigh_get_first(seq);
+
+	if (pn) {
+		--(*pos);
+		while (*pos) {
+			pn = pneigh_get_next(seq, pn, pos);
+			if (!pn)
+				break;
+		}
+	}
+	return *pos ? NULL : pn;
+}
+
+static void *neigh_get_idx_any(struct seq_file *seq, loff_t *pos)
+{
+	struct neigh_seq_state *state = seq->private;
+	void *rc;
+	loff_t idxpos = *pos;
+
+	rc = neigh_get_idx(seq, &idxpos);
+	if (!rc && !(state->flags & NEIGH_SEQ_NEIGH_ONLY))
+		rc = pneigh_get_idx(seq, &idxpos);
+
+	return rc;
+}
+
+void *neigh_seq_start(struct seq_file *seq, loff_t *pos, struct neigh_table *tbl, unsigned int neigh_seq_flags)
+	__acquires(tbl->lock)
+{
+	struct neigh_seq_state *state = seq->private;
+
+	state->tbl = tbl;
+	state->bucket = 0;
+	state->flags = (neigh_seq_flags & ~NEIGH_SEQ_IS_PNEIGH);
+
+	read_lock_bh(&tbl->lock);
+
+	return *pos ? neigh_get_idx_any(seq, pos) : SEQ_START_TOKEN;
+}
+EXPORT_SYMBOL(neigh_seq_start);
+
+void *neigh_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct neigh_seq_state *state;
+	void *rc;
+
+	if (v == SEQ_START_TOKEN) {
+		rc = neigh_get_first(seq);
+		goto out;
+	}
+
+	state = seq->private;
+	if (!(state->flags & NEIGH_SEQ_IS_PNEIGH)) {
+		rc = neigh_get_next(seq, v, NULL);
+		if (rc)
+			goto out;
+		if (!(state->flags & NEIGH_SEQ_NEIGH_ONLY))
+			rc = pneigh_get_first(seq);
+	} else {
+		BUG_ON(state->flags & NEIGH_SEQ_NEIGH_ONLY);
+		rc = pneigh_get_next(seq, v, NULL);
+	}
+out:
+	++(*pos);
+	return rc;
+}
+EXPORT_SYMBOL(neigh_seq_next);
+
+void neigh_seq_stop(struct seq_file *seq, void *v)
+	__releases(tbl->lock)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct neigh_table *tbl = state->tbl;
+
+	read_unlock_bh(&tbl->lock);
+}
+EXPORT_SYMBOL(neigh_seq_stop);
+
+/* statistics via seq_file */
+
+static void *neigh_stat_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct proc_dir_entry *pde = seq->private;
+	struct neigh_table *tbl = pde->data;
+	int cpu;
+
+	if (*pos == 0)
+		return SEQ_START_TOKEN;
+
+	for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
+		if (!cpu_possible(cpu))
+			continue;
+		*pos = cpu+1;
+		return per_cpu_ptr(tbl->stats, cpu);
+	}
+	return NULL;
+}
+
+static void *neigh_stat_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct proc_dir_entry *pde = seq->private;
+	struct neigh_table *tbl = pde->data;
+	int cpu;
+
+	for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
+		if (!cpu_possible(cpu))
+			continue;
+		*pos = cpu+1;
+		return per_cpu_ptr(tbl->stats, cpu);
+	}
+	return NULL;
+}
+
+static void neigh_stat_seq_stop(struct seq_file *seq, void *v)
+{
+
+}
+
+static int neigh_stat_seq_show(struct seq_file *seq, void *v)
+{
+	struct proc_dir_entry *pde = seq->private;
+	struct neigh_table *tbl = pde->data;
+	struct neigh_statistics *st = v;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_printf(seq, "entries  allocs destroys hash_grows  lookups hits  res_failed  rcv_probes_mcast rcv_probes_ucast  periodic_gc_runs forced_gc_runs unresolved_discards\n");
+		return 0;
+	}
+
+	seq_printf(seq, "%08x  %08lx %08lx %08lx  %08lx %08lx  %08lx  "
+			"%08lx %08lx  %08lx %08lx %08lx\n",
+		   atomic_read(&tbl->entries),
+
+		   st->allocs,
+		   st->destroys,
+		   st->hash_grows,
+
+		   st->lookups,
+		   st->hits,
+
+		   st->res_failed,
+
+		   st->rcv_probes_mcast,
+		   st->rcv_probes_ucast,
+
+		   st->periodic_gc_runs,
+		   st->forced_gc_runs,
+		   st->unres_discards
+		   );
+
+	return 0;
+}
+
+static const struct seq_operations neigh_stat_seq_ops = {
+	.start	= neigh_stat_seq_start,
+	.next	= neigh_stat_seq_next,
+	.stop	= neigh_stat_seq_stop,
+	.show	= neigh_stat_seq_show,
+};
+
+static int neigh_stat_seq_open(struct inode *inode, struct file *file)
+{
+	int ret = seq_open(file, &neigh_stat_seq_ops);
+
+	if (!ret) {
+		struct seq_file *sf = file->private_data;
+		sf->private = PDE(inode);
+	}
+	return ret;
+};
+
+static const struct file_operations neigh_stat_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open 	 = neigh_stat_seq_open,
+	.read	 = seq_read,
+	.llseek	 = seq_lseek,
+	.release = seq_release,
+};
+
+#endif /* CONFIG_PROC_FS */
+
+static inline size_t neigh_nlmsg_size(void)
+{
+	return NLMSG_ALIGN(sizeof(struct ndmsg))
+	       + nla_total_size(MAX_ADDR_LEN) /* NDA_DST */
+	       + nla_total_size(MAX_ADDR_LEN) /* NDA_LLADDR */
+	       + nla_total_size(sizeof(struct nda_cacheinfo))
+	       + nla_total_size(4); /* NDA_PROBES */
+}
+
+static void __neigh_notify(struct neighbour *n, int type, int flags)
+{
+	struct net *net = dev_net(n->dev);
+	struct sk_buff *skb;
+	int err = -ENOBUFS;
+
+	skb = nlmsg_new(neigh_nlmsg_size(), GFP_ATOMIC);
+	if (skb == NULL)
+		goto errout;
+
+	err = neigh_fill_info(skb, n, 0, 0, type, flags);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in neigh_nlmsg_size() */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(skb);
+		goto errout;
+	}
+	err = rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
+errout:
+	if (err < 0)
+		rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
+}
+
+#ifdef CONFIG_ARPD
+void neigh_app_ns(struct neighbour *n)
+{
+	__neigh_notify(n, RTM_GETNEIGH, NLM_F_REQUEST);
+}
+EXPORT_SYMBOL(neigh_app_ns);
+#endif /* CONFIG_ARPD */
+
+#ifdef CONFIG_SYSCTL
+
+static struct neigh_sysctl_table {
+	struct ctl_table_header *sysctl_header;
+	struct ctl_table neigh_vars[__NET_NEIGH_MAX];
+	char *dev_name;
+} neigh_sysctl_template __read_mostly = {
+	.neigh_vars = {
+		{
+			.ctl_name	= NET_NEIGH_MCAST_SOLICIT,
+			.procname	= "mcast_solicit",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_UCAST_SOLICIT,
+			.procname	= "ucast_solicit",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_APP_SOLICIT,
+			.procname	= "app_solicit",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.procname	= "retrans_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_REACHABLE_TIME,
+			.procname	= "base_reachable_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_DELAY_PROBE_TIME,
+			.procname	= "delay_first_probe_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_STALE_TIME,
+			.procname	= "gc_stale_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_UNRES_QLEN,
+			.procname	= "unres_qlen",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_PROXY_QLEN,
+			.procname	= "proxy_qlen",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.procname	= "anycast_delay",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.procname	= "proxy_delay",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.procname	= "locktime",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_RETRANS_TIME_MS,
+			.procname	= "retrans_time_ms",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_ms_jiffies,
+			.strategy	= sysctl_ms_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_REACHABLE_TIME_MS,
+			.procname	= "base_reachable_time_ms",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_ms_jiffies,
+			.strategy	= sysctl_ms_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_INTERVAL,
+			.procname	= "gc_interval",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_THRESH1,
+			.procname	= "gc_thresh1",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_THRESH2,
+			.procname	= "gc_thresh2",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_THRESH3,
+			.procname	= "gc_thresh3",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{},
+	},
+};
+
+int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
+			  int p_id, int pdev_id, char *p_name,
+			  proc_handler *handler, ctl_handler *strategy)
+{
+	struct neigh_sysctl_table *t;
+	const char *dev_name_source = NULL;
+
+#define NEIGH_CTL_PATH_ROOT	0
+#define NEIGH_CTL_PATH_PROTO	1
+#define NEIGH_CTL_PATH_NEIGH	2
+#define NEIGH_CTL_PATH_DEV	3
+
+	struct ctl_path neigh_path[] = {
+		{ .procname = "net",	 .ctl_name = CTL_NET, },
+		{ .procname = "proto",	 .ctl_name = 0, },
+		{ .procname = "neigh",	 .ctl_name = 0, },
+		{ .procname = "default", .ctl_name = NET_PROTO_CONF_DEFAULT, },
+		{ },
+	};
+
+	t = kmemdup(&neigh_sysctl_template, sizeof(*t), GFP_KERNEL);
+	if (!t)
+		goto err;
+
+	t->neigh_vars[0].data  = &p->mcast_probes;
+	t->neigh_vars[1].data  = &p->ucast_probes;
+	t->neigh_vars[2].data  = &p->app_probes;
+	t->neigh_vars[3].data  = &p->retrans_time;
+	t->neigh_vars[4].data  = &p->base_reachable_time;
+	t->neigh_vars[5].data  = &p->delay_probe_time;
+	t->neigh_vars[6].data  = &p->gc_staletime;
+	t->neigh_vars[7].data  = &p->queue_len;
+	t->neigh_vars[8].data  = &p->proxy_qlen;
+	t->neigh_vars[9].data  = &p->anycast_delay;
+	t->neigh_vars[10].data = &p->proxy_delay;
+	t->neigh_vars[11].data = &p->locktime;
+	t->neigh_vars[12].data  = &p->retrans_time;
+	t->neigh_vars[13].data  = &p->base_reachable_time;
+
+	if (dev) {
+		dev_name_source = dev->name;
+		neigh_path[NEIGH_CTL_PATH_DEV].ctl_name = dev->ifindex;
+		/* Terminate the table early */
+		memset(&t->neigh_vars[14], 0, sizeof(t->neigh_vars[14]));
+	} else {
+		dev_name_source = neigh_path[NEIGH_CTL_PATH_DEV].procname;
+		t->neigh_vars[14].data = (int *)(p + 1);
+		t->neigh_vars[15].data = (int *)(p + 1) + 1;
+		t->neigh_vars[16].data = (int *)(p + 1) + 2;
+		t->neigh_vars[17].data = (int *)(p + 1) + 3;
+	}
+
+
+	if (handler || strategy) {
+		/* RetransTime */
+		t->neigh_vars[3].proc_handler = handler;
+		t->neigh_vars[3].strategy = strategy;
+		t->neigh_vars[3].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[3].ctl_name = CTL_UNNUMBERED;
+		/* ReachableTime */
+		t->neigh_vars[4].proc_handler = handler;
+		t->neigh_vars[4].strategy = strategy;
+		t->neigh_vars[4].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[4].ctl_name = CTL_UNNUMBERED;
+		/* RetransTime (in milliseconds)*/
+		t->neigh_vars[12].proc_handler = handler;
+		t->neigh_vars[12].strategy = strategy;
+		t->neigh_vars[12].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[12].ctl_name = CTL_UNNUMBERED;
+		/* ReachableTime (in milliseconds) */
+		t->neigh_vars[13].proc_handler = handler;
+		t->neigh_vars[13].strategy = strategy;
+		t->neigh_vars[13].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[13].ctl_name = CTL_UNNUMBERED;
+	}
+
+	t->dev_name = kstrdup(dev_name_source, GFP_KERNEL);
+	if (!t->dev_name)
+		goto free;
+
+	neigh_path[NEIGH_CTL_PATH_DEV].procname = t->dev_name;
+	neigh_path[NEIGH_CTL_PATH_NEIGH].ctl_name = pdev_id;
+	neigh_path[NEIGH_CTL_PATH_PROTO].procname = p_name;
+	neigh_path[NEIGH_CTL_PATH_PROTO].ctl_name = p_id;
+
+	t->sysctl_header =
+		register_net_sysctl_table(neigh_parms_net(p), neigh_path, t->neigh_vars);
+	if (!t->sysctl_header)
+		goto free_procname;
+
+	p->sysctl_table = t;
+	return 0;
+
+free_procname:
+	kfree(t->dev_name);
+free:
+	kfree(t);
+err:
+	return -ENOBUFS;
+}
+EXPORT_SYMBOL(neigh_sysctl_register);
+
+void neigh_sysctl_unregister(struct neigh_parms *p)
+{
+	if (p->sysctl_table) {
+		struct neigh_sysctl_table *t = p->sysctl_table;
+		p->sysctl_table = NULL;
+		unregister_sysctl_table(t->sysctl_header);
+		kfree(t->dev_name);
+		kfree(t);
+	}
+}
+EXPORT_SYMBOL(neigh_sysctl_unregister);
+
+#endif	/* CONFIG_SYSCTL */
+
+static int __init neigh_init(void)
+{
+	rtnl_register(PF_UNSPEC, RTM_NEWNEIGH, neigh_add, NULL);
+	rtnl_register(PF_UNSPEC, RTM_DELNEIGH, neigh_delete, NULL);
+	rtnl_register(PF_UNSPEC, RTM_GETNEIGH, NULL, neigh_dump_info);
+
+	rtnl_register(PF_UNSPEC, RTM_GETNEIGHTBL, NULL, neightbl_dump_info);
+	rtnl_register(PF_UNSPEC, RTM_SETNEIGHTBL, neightbl_set, NULL);
+
+	return 0;
+}
+
+subsys_initcall(neigh_init);
+
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/net-sysfs.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/net-sysfs.c.svn-base
new file mode 100644
index 00000000..484f5875
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/net-sysfs.c.svn-base
@@ -0,0 +1,540 @@
+/*
+ * net-sysfs.c - network device class and attributes
+ *
+ * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/capability.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <net/sock.h>
+#include <linux/rtnetlink.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+
+#include "net-sysfs.h"
+
+#ifdef CONFIG_SYSFS
+static const char fmt_hex[] = "%#x\n";
+static const char fmt_long_hex[] = "%#lx\n";
+static const char fmt_dec[] = "%d\n";
+static const char fmt_ulong[] = "%lu\n";
+
+static inline int dev_isalive(const struct net_device *dev)
+{
+	return dev->reg_state <= NETREG_REGISTERED;
+}
+
+/* use same locking rules as GIF* ioctl's */
+static ssize_t netdev_show(const struct device *dev,
+			   struct device_attribute *attr, char *buf,
+			   ssize_t (*format)(const struct net_device *, char *))
+{
+	struct net_device *net = to_net_dev(dev);
+	ssize_t ret = -EINVAL;
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(net))
+		ret = (*format)(net, buf);
+	read_unlock(&dev_base_lock);
+
+	return ret;
+}
+
+/* generate a show function for simple field */
+#define NETDEVICE_SHOW(field, format_string)				\
+static ssize_t format_##field(const struct net_device *net, char *buf)	\
+{									\
+	return sprintf(buf, format_string, net->field);			\
+}									\
+static ssize_t show_##field(struct device *dev,				\
+			    struct device_attribute *attr, char *buf)	\
+{									\
+	return netdev_show(dev, attr, buf, format_##field);		\
+}
+
+
+/* use same locking and permission rules as SIF* ioctl's */
+static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t len,
+			    int (*set)(struct net_device *, unsigned long))
+{
+	struct net_device *net = to_net_dev(dev);
+	char *endp;
+	unsigned long new;
+	int ret = -EINVAL;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	new = simple_strtoul(buf, &endp, 0);
+	if (endp == buf)
+		goto err;
+
+	if (!rtnl_trylock())
+		return -ERESTARTSYS;
+
+	if (dev_isalive(net)) {
+		if ((ret = (*set)(net, new)) == 0)
+			ret = len;
+	}
+	rtnl_unlock();
+ err:
+	return ret;
+}
+
+NETDEVICE_SHOW(dev_id, fmt_hex);
+NETDEVICE_SHOW(addr_len, fmt_dec);
+NETDEVICE_SHOW(iflink, fmt_dec);
+NETDEVICE_SHOW(ifindex, fmt_dec);
+NETDEVICE_SHOW(features, fmt_long_hex);
+NETDEVICE_SHOW(type, fmt_dec);
+NETDEVICE_SHOW(link_mode, fmt_dec);
+
+/* use same locking rules as GIFHWADDR ioctl's */
+static ssize_t show_address(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	struct net_device *net = to_net_dev(dev);
+	ssize_t ret = -EINVAL;
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(net))
+		ret = sysfs_format_mac(buf, net->dev_addr, net->addr_len);
+	read_unlock(&dev_base_lock);
+	return ret;
+}
+
+static ssize_t show_broadcast(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct net_device *net = to_net_dev(dev);
+	if (dev_isalive(net))
+		return sysfs_format_mac(buf, net->broadcast, net->addr_len);
+	return -EINVAL;
+}
+
+static ssize_t show_carrier(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct net_device *netdev = to_net_dev(dev);
+	if (netif_running(netdev)) {
+		return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev));
+	}
+	return -EINVAL;
+}
+
+static ssize_t show_dormant(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct net_device *netdev = to_net_dev(dev);
+
+	if (netif_running(netdev))
+		return sprintf(buf, fmt_dec, !!netif_dormant(netdev));
+
+	return -EINVAL;
+}
+
+static const char *operstates[] = {
+	"unknown",
+	"notpresent", /* currently unused */
+	"down",
+	"lowerlayerdown",
+	"testing", /* currently unused */
+	"dormant",
+	"up"
+};
+
+static ssize_t show_operstate(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	const struct net_device *netdev = to_net_dev(dev);
+	unsigned char operstate;
+
+	read_lock(&dev_base_lock);
+	operstate = netdev->operstate;
+	if (!netif_running(netdev))
+		operstate = IF_OPER_DOWN;
+	read_unlock(&dev_base_lock);
+
+	if (operstate >= ARRAY_SIZE(operstates))
+		return -EINVAL; /* should not happen */
+
+	return sprintf(buf, "%s\n", operstates[operstate]);
+}
+
+/* read-write attributes */
+NETDEVICE_SHOW(mtu, fmt_dec);
+
+static int change_mtu(struct net_device *net, unsigned long new_mtu)
+{
+	return dev_set_mtu(net, (int) new_mtu);
+}
+
+static ssize_t store_mtu(struct device *dev, struct device_attribute *attr,
+			 const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_mtu);
+}
+
+NETDEVICE_SHOW(flags, fmt_hex);
+
+static int change_flags(struct net_device *net, unsigned long new_flags)
+{
+	return dev_change_flags(net, (unsigned) new_flags);
+}
+
+static ssize_t store_flags(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_flags);
+}
+
+NETDEVICE_SHOW(tx_queue_len, fmt_ulong);
+
+static int change_tx_queue_len(struct net_device *net, unsigned long new_len)
+{
+	net->tx_queue_len = new_len;
+	return 0;
+}
+
+static ssize_t store_tx_queue_len(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_tx_queue_len);
+}
+
+static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr,
+			     const char *buf, size_t len)
+{
+	struct net_device *netdev = to_net_dev(dev);
+	size_t count = len;
+	ssize_t ret;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	/* ignore trailing newline */
+	if (len >  0 && buf[len - 1] == '\n')
+		--count;
+
+	rtnl_lock();
+	ret = dev_set_alias(netdev, buf, count);
+	rtnl_unlock();
+
+	return ret < 0 ? ret : len;
+}
+
+static ssize_t show_ifalias(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	const struct net_device *netdev = to_net_dev(dev);
+	ssize_t ret = 0;
+
+	rtnl_lock();
+	if (netdev->ifalias)
+		ret = sprintf(buf, "%s\n", netdev->ifalias);
+	rtnl_unlock();
+	return ret;
+}
+
+static struct device_attribute net_class_attributes[] = {
+	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
+	__ATTR(dev_id, S_IRUGO, show_dev_id, NULL),
+	__ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias),
+	__ATTR(iflink, S_IRUGO, show_iflink, NULL),
+	__ATTR(ifindex, S_IRUGO, show_ifindex, NULL),
+	__ATTR(features, S_IRUGO, show_features, NULL),
+	__ATTR(type, S_IRUGO, show_type, NULL),
+	__ATTR(link_mode, S_IRUGO, show_link_mode, NULL),
+	__ATTR(address, S_IRUGO, show_address, NULL),
+	__ATTR(broadcast, S_IRUGO, show_broadcast, NULL),
+	__ATTR(carrier, S_IRUGO, show_carrier, NULL),
+	__ATTR(dormant, S_IRUGO, show_dormant, NULL),
+	__ATTR(operstate, S_IRUGO, show_operstate, NULL),
+	__ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu),
+	__ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),
+	__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,
+	       store_tx_queue_len),
+	{}
+};
+
+/* Show a given an attribute in the statistics group */
+static ssize_t netstat_show(const struct device *d,
+			    struct device_attribute *attr, char *buf,
+			    unsigned long offset)
+{
+	struct net_device *dev = to_net_dev(d);
+	ssize_t ret = -EINVAL;
+
+	WARN_ON(offset > sizeof(struct net_device_stats) ||
+			offset % sizeof(unsigned long) != 0);
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(dev)) {
+		const struct net_device_stats *stats = dev_get_stats(dev);
+		ret = sprintf(buf, fmt_ulong,
+			      *(unsigned long *)(((u8 *) stats) + offset));
+	}
+	read_unlock(&dev_base_lock);
+	return ret;
+}
+
+/* generate a read-only statistics attribute */
+#define NETSTAT_ENTRY(name)						\
+static ssize_t show_##name(struct device *d,				\
+			   struct device_attribute *attr, char *buf) 	\
+{									\
+	return netstat_show(d, attr, buf,				\
+			    offsetof(struct net_device_stats, name));	\
+}									\
+static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
+
+NETSTAT_ENTRY(rx_packets);
+NETSTAT_ENTRY(tx_packets);
+NETSTAT_ENTRY(rx_bytes);
+NETSTAT_ENTRY(tx_bytes);
+NETSTAT_ENTRY(rx_errors);
+NETSTAT_ENTRY(tx_errors);
+NETSTAT_ENTRY(rx_dropped);
+NETSTAT_ENTRY(tx_dropped);
+NETSTAT_ENTRY(multicast);
+NETSTAT_ENTRY(collisions);
+NETSTAT_ENTRY(rx_length_errors);
+NETSTAT_ENTRY(rx_over_errors);
+NETSTAT_ENTRY(rx_crc_errors);
+NETSTAT_ENTRY(rx_frame_errors);
+NETSTAT_ENTRY(rx_fifo_errors);
+NETSTAT_ENTRY(rx_missed_errors);
+NETSTAT_ENTRY(tx_aborted_errors);
+NETSTAT_ENTRY(tx_carrier_errors);
+NETSTAT_ENTRY(tx_fifo_errors);
+NETSTAT_ENTRY(tx_heartbeat_errors);
+NETSTAT_ENTRY(tx_window_errors);
+NETSTAT_ENTRY(rx_compressed);
+NETSTAT_ENTRY(tx_compressed);
+
+static struct attribute *netstat_attrs[] = {
+	&dev_attr_rx_packets.attr,
+	&dev_attr_tx_packets.attr,
+	&dev_attr_rx_bytes.attr,
+	&dev_attr_tx_bytes.attr,
+	&dev_attr_rx_errors.attr,
+	&dev_attr_tx_errors.attr,
+	&dev_attr_rx_dropped.attr,
+	&dev_attr_tx_dropped.attr,
+	&dev_attr_multicast.attr,
+	&dev_attr_collisions.attr,
+	&dev_attr_rx_length_errors.attr,
+	&dev_attr_rx_over_errors.attr,
+	&dev_attr_rx_crc_errors.attr,
+	&dev_attr_rx_frame_errors.attr,
+	&dev_attr_rx_fifo_errors.attr,
+	&dev_attr_rx_missed_errors.attr,
+	&dev_attr_tx_aborted_errors.attr,
+	&dev_attr_tx_carrier_errors.attr,
+	&dev_attr_tx_fifo_errors.attr,
+	&dev_attr_tx_heartbeat_errors.attr,
+	&dev_attr_tx_window_errors.attr,
+	&dev_attr_rx_compressed.attr,
+	&dev_attr_tx_compressed.attr,
+	NULL
+};
+
+
+static struct attribute_group netstat_group = {
+	.name  = "statistics",
+	.attrs  = netstat_attrs,
+};
+
+#ifdef CONFIG_WIRELESS_EXT_SYSFS
+/* helper function that does all the locking etc for wireless stats */
+static ssize_t wireless_show(struct device *d, char *buf,
+			     ssize_t (*format)(const struct iw_statistics *,
+					       char *))
+{
+	struct net_device *dev = to_net_dev(d);
+	const struct iw_statistics *iw = NULL;
+	ssize_t ret = -EINVAL;
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(dev)) {
+		if (dev->wireless_handlers &&
+		    dev->wireless_handlers->get_wireless_stats)
+			iw = dev->wireless_handlers->get_wireless_stats(dev);
+		if (iw != NULL)
+			ret = (*format)(iw, buf);
+	}
+	read_unlock(&dev_base_lock);
+
+	return ret;
+}
+
+/* show function template for wireless fields */
+#define WIRELESS_SHOW(name, field, format_string)			\
+static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \
+{									\
+	return sprintf(buf, format_string, iw->field);			\
+}									\
+static ssize_t show_iw_##name(struct device *d,				\
+			      struct device_attribute *attr, char *buf)	\
+{									\
+	return wireless_show(d, buf, format_iw_##name);			\
+}									\
+static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL)
+
+WIRELESS_SHOW(status, status, fmt_hex);
+WIRELESS_SHOW(link, qual.qual, fmt_dec);
+WIRELESS_SHOW(level, qual.level, fmt_dec);
+WIRELESS_SHOW(noise, qual.noise, fmt_dec);
+WIRELESS_SHOW(nwid, discard.nwid, fmt_dec);
+WIRELESS_SHOW(crypt, discard.code, fmt_dec);
+WIRELESS_SHOW(fragment, discard.fragment, fmt_dec);
+WIRELESS_SHOW(misc, discard.misc, fmt_dec);
+WIRELESS_SHOW(retries, discard.retries, fmt_dec);
+WIRELESS_SHOW(beacon, miss.beacon, fmt_dec);
+
+static struct attribute *wireless_attrs[] = {
+	&dev_attr_status.attr,
+	&dev_attr_link.attr,
+	&dev_attr_level.attr,
+	&dev_attr_noise.attr,
+	&dev_attr_nwid.attr,
+	&dev_attr_crypt.attr,
+	&dev_attr_fragment.attr,
+	&dev_attr_retries.attr,
+	&dev_attr_misc.attr,
+	&dev_attr_beacon.attr,
+	NULL
+};
+
+static struct attribute_group wireless_group = {
+	.name = "wireless",
+	.attrs = wireless_attrs,
+};
+#endif
+
+#endif /* CONFIG_SYSFS */
+
+#ifdef CONFIG_HOTPLUG
+static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
+{
+	struct net_device *dev = to_net_dev(d);
+	int retval;
+
+	if (!net_eq(dev_net(dev), &init_net))
+		return 0;
+
+	/* pass interface to uevent. */
+	retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
+	if (retval)
+		goto exit;
+
+	/* pass ifindex to uevent.
+	 * ifindex is useful as it won't change (interface name may change)
+	 * and is what RtNetlink uses natively. */
+	retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex);
+
+exit:
+	return retval;
+}
+#endif
+
+/*
+ *	netdev_release -- destroy and free a dead device.
+ *	Called when last reference to device kobject is gone.
+ */
+static void netdev_release(struct device *d)
+{
+	struct net_device *dev = to_net_dev(d);
+
+	BUG_ON(dev->reg_state != NETREG_RELEASED);
+
+	kfree(dev->ifalias);
+	kfree((char *)dev - dev->padded);
+}
+
+static struct class net_class = {
+	.name = "net",
+	.dev_release = netdev_release,
+#ifdef CONFIG_SYSFS
+	.dev_attrs = net_class_attributes,
+#endif /* CONFIG_SYSFS */
+#ifdef CONFIG_HOTPLUG
+	.dev_uevent = netdev_uevent,
+#endif
+};
+
+/* Delete sysfs entries but hold kobject reference until after all
+ * netdev references are gone.
+ */
+void netdev_unregister_kobject(struct net_device * net)
+{
+	struct device *dev = &(net->dev);
+
+	kobject_get(&dev->kobj);
+
+	if (dev_net(net) != &init_net)
+		return;
+
+	device_del(dev);
+}
+
+/* Create sysfs entries for network device. */
+int netdev_register_kobject(struct net_device *net)
+{
+	struct device *dev = &(net->dev);
+	struct attribute_group **groups = net->sysfs_groups;
+
+	dev->class = &net_class;
+	dev->platform_data = net;
+	dev->groups = groups;
+
+	BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ);
+	dev_set_name(dev, net->name);
+
+#ifdef CONFIG_SYSFS
+	*groups++ = &netstat_group;
+
+#ifdef CONFIG_WIRELESS_EXT_SYSFS
+	if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats)
+		*groups++ = &wireless_group;
+#endif
+#endif /* CONFIG_SYSFS */
+
+	if (dev_net(net) != &init_net)
+		return 0;
+
+	return device_add(dev);
+}
+
+int netdev_class_create_file(struct class_attribute *class_attr)
+{
+	return class_create_file(&net_class, class_attr);
+}
+
+void netdev_class_remove_file(struct class_attribute *class_attr)
+{
+	class_remove_file(&net_class, class_attr);
+}
+
+EXPORT_SYMBOL(netdev_class_create_file);
+EXPORT_SYMBOL(netdev_class_remove_file);
+
+void netdev_initialize_kobject(struct net_device *net)
+{
+	struct device *device = &(net->dev);
+	device_initialize(device);
+}
+
+int netdev_kobject_init(void)
+{
+	return class_register(&net_class);
+}
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/net-sysfs.h.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/net-sysfs.h.svn-base
new file mode 100644
index 00000000..14e75242
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/net-sysfs.h.svn-base
@@ -0,0 +1,8 @@
+#ifndef __NET_SYSFS_H__
+#define __NET_SYSFS_H__
+
+int netdev_kobject_init(void);
+int netdev_register_kobject(struct net_device *);
+void netdev_unregister_kobject(struct net_device *);
+void netdev_initialize_kobject(struct net_device *);
+#endif
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/netevent.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/netevent.c.svn-base
new file mode 100644
index 00000000..95f81de8
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/netevent.c.svn-base
@@ -0,0 +1,70 @@
+/*
+ *	Network event notifiers
+ *
+ *	Authors:
+ *      Tom Tucker             <tom@opengridcomputing.com>
+ *      Steve Wise             <swise@opengridcomputing.com>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *	Fixes:
+ */
+
+#include <linux/rtnetlink.h>
+#include <linux/notifier.h>
+#include <net/netevent.h>
+
+static ATOMIC_NOTIFIER_HEAD(netevent_notif_chain);
+
+/**
+ *	register_netevent_notifier - register a netevent notifier block
+ *	@nb: notifier
+ *
+ *	Register a notifier to be called when a netevent occurs.
+ *	The notifier passed is linked into the kernel structures and must
+ *	not be reused until it has been unregistered. A negative errno code
+ *	is returned on a failure.
+ */
+int register_netevent_notifier(struct notifier_block *nb)
+{
+	int err;
+
+	err = atomic_notifier_chain_register(&netevent_notif_chain, nb);
+	return err;
+}
+
+/**
+ *	netevent_unregister_notifier - unregister a netevent notifier block
+ *	@nb: notifier
+ *
+ *	Unregister a notifier previously registered by
+ *	register_neigh_notifier(). The notifier is unlinked into the
+ *	kernel structures and may then be reused. A negative errno code
+ *	is returned on a failure.
+ */
+
+int unregister_netevent_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&netevent_notif_chain, nb);
+}
+
+/**
+ *	call_netevent_notifiers - call all netevent notifier blocks
+ *      @val: value passed unmodified to notifier function
+ *      @v:   pointer passed unmodified to notifier function
+ *
+ *	Call all neighbour notifier blocks.  Parameters and return value
+ *	are as for notifier_call_chain().
+ */
+
+int call_netevent_notifiers(unsigned long val, void *v)
+{
+	return atomic_notifier_call_chain(&netevent_notif_chain, val, v);
+}
+
+EXPORT_SYMBOL_GPL(register_netevent_notifier);
+EXPORT_SYMBOL_GPL(unregister_netevent_notifier);
+EXPORT_SYMBOL_GPL(call_netevent_notifiers);
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/rtnetlink.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/rtnetlink.c.svn-base
new file mode 100644
index 00000000..790dd205
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/rtnetlink.c.svn-base
@@ -0,0 +1,1430 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Routing netlink socket interface: protocol independent part.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *	Fixes:
+ *	Vitaly E. Lavrov		RTA_OK arithmetics was wrong.
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/capability.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/security.h>
+#include <linux/mutex.h>
+#include <linux/if_addr.h>
+#include <linux/nsproxy.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/string.h>
+
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <net/ip.h>
+#include <net/protocol.h>
+#include <net/arp.h>
+#include <net/route.h>
+#include <net/udp.h>
+#include <net/sock.h>
+#include <net/pkt_sched.h>
+#include <net/fib_rules.h>
+#include <net/rtnetlink.h>
+
+struct rtnl_link
+{
+	rtnl_doit_func		doit;
+	rtnl_dumpit_func	dumpit;
+};
+
+static DEFINE_MUTEX(rtnl_mutex);
+
+void rtnl_lock(void)
+{
+	mutex_lock(&rtnl_mutex);
+}
+
+void __rtnl_unlock(void)
+{
+	mutex_unlock(&rtnl_mutex);
+}
+
+void rtnl_unlock(void)
+{
+	/* This fellow will unlock it for us. */
+	netdev_run_todo();
+}
+
+int rtnl_trylock(void)
+{
+	return mutex_trylock(&rtnl_mutex);
+}
+
+int rtnl_is_locked(void)
+{
+	return mutex_is_locked(&rtnl_mutex);
+}
+
+static struct rtnl_link *rtnl_msg_handlers[NPROTO];
+
+static inline int rtm_msgindex(int msgtype)
+{
+	int msgindex = msgtype - RTM_BASE;
+
+	/*
+	 * msgindex < 0 implies someone tried to register a netlink
+	 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
+	 * the message type has not been added to linux/rtnetlink.h
+	 */
+	BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES);
+
+	return msgindex;
+}
+
+static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex)
+{
+	struct rtnl_link *tab;
+
+	tab = rtnl_msg_handlers[protocol];
+	if (tab == NULL || tab[msgindex].doit == NULL)
+		tab = rtnl_msg_handlers[PF_UNSPEC];
+
+	return tab ? tab[msgindex].doit : NULL;
+}
+
+static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex)
+{
+	struct rtnl_link *tab;
+
+	tab = rtnl_msg_handlers[protocol];
+	if (tab == NULL || tab[msgindex].dumpit == NULL)
+		tab = rtnl_msg_handlers[PF_UNSPEC];
+
+	return tab ? tab[msgindex].dumpit : NULL;
+}
+
+/**
+ * __rtnl_register - Register a rtnetlink message type
+ * @protocol: Protocol family or PF_UNSPEC
+ * @msgtype: rtnetlink message type
+ * @doit: Function pointer called for each request message
+ * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
+ *
+ * Registers the specified function pointers (at least one of them has
+ * to be non-NULL) to be called whenever a request message for the
+ * specified protocol family and message type is received.
+ *
+ * The special protocol family PF_UNSPEC may be used to define fallback
+ * function pointers for the case when no entry for the specific protocol
+ * family exists.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int __rtnl_register(int protocol, int msgtype,
+		    rtnl_doit_func doit, rtnl_dumpit_func dumpit)
+{
+	struct rtnl_link *tab;
+	int msgindex;
+
+	BUG_ON(protocol < 0 || protocol >= NPROTO);
+	msgindex = rtm_msgindex(msgtype);
+
+	tab = rtnl_msg_handlers[protocol];
+	if (tab == NULL) {
+		tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL);
+		if (tab == NULL)
+			return -ENOBUFS;
+
+		rtnl_msg_handlers[protocol] = tab;
+	}
+
+	if (doit)
+		tab[msgindex].doit = doit;
+
+	if (dumpit)
+		tab[msgindex].dumpit = dumpit;
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(__rtnl_register);
+
+/**
+ * rtnl_register - Register a rtnetlink message type
+ *
+ * Identical to __rtnl_register() but panics on failure. This is useful
+ * as failure of this function is very unlikely, it can only happen due
+ * to lack of memory when allocating the chain to store all message
+ * handlers for a protocol. Meant for use in init functions where lack
+ * of memory implies no sense in continueing.
+ */
+void rtnl_register(int protocol, int msgtype,
+		   rtnl_doit_func doit, rtnl_dumpit_func dumpit)
+{
+	if (__rtnl_register(protocol, msgtype, doit, dumpit) < 0)
+		panic("Unable to register rtnetlink message handler, "
+		      "protocol = %d, message type = %d\n",
+		      protocol, msgtype);
+}
+
+EXPORT_SYMBOL_GPL(rtnl_register);
+
+/**
+ * rtnl_unregister - Unregister a rtnetlink message type
+ * @protocol: Protocol family or PF_UNSPEC
+ * @msgtype: rtnetlink message type
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int rtnl_unregister(int protocol, int msgtype)
+{
+	int msgindex;
+
+	BUG_ON(protocol < 0 || protocol >= NPROTO);
+	msgindex = rtm_msgindex(msgtype);
+
+	if (rtnl_msg_handlers[protocol] == NULL)
+		return -ENOENT;
+
+	rtnl_msg_handlers[protocol][msgindex].doit = NULL;
+	rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(rtnl_unregister);
+
+/**
+ * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
+ * @protocol : Protocol family or PF_UNSPEC
+ *
+ * Identical to calling rtnl_unregster() for all registered message types
+ * of a certain protocol family.
+ */
+void rtnl_unregister_all(int protocol)
+{
+	BUG_ON(protocol < 0 || protocol >= NPROTO);
+
+	kfree(rtnl_msg_handlers[protocol]);
+	rtnl_msg_handlers[protocol] = NULL;
+}
+
+EXPORT_SYMBOL_GPL(rtnl_unregister_all);
+
+static LIST_HEAD(link_ops);
+
+/**
+ * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
+ * @ops: struct rtnl_link_ops * to register
+ *
+ * The caller must hold the rtnl_mutex. This function should be used
+ * by drivers that create devices during module initialization. It
+ * must be called before registering the devices.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int __rtnl_link_register(struct rtnl_link_ops *ops)
+{
+	if (!ops->dellink)
+		ops->dellink = unregister_netdevice;
+
+	list_add_tail(&ops->list, &link_ops);
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(__rtnl_link_register);
+
+/**
+ * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
+ * @ops: struct rtnl_link_ops * to register
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int rtnl_link_register(struct rtnl_link_ops *ops)
+{
+	int err;
+
+	rtnl_lock();
+	err = __rtnl_link_register(ops);
+	rtnl_unlock();
+	return err;
+}
+
+EXPORT_SYMBOL_GPL(rtnl_link_register);
+
+static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
+{
+	struct net_device *dev;
+restart:
+	for_each_netdev(net, dev) {
+		if (dev->rtnl_link_ops == ops) {
+			ops->dellink(dev);
+			goto restart;
+		}
+	}
+}
+
+void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
+{
+	rtnl_lock();
+	__rtnl_kill_links(net, ops);
+	rtnl_unlock();
+}
+EXPORT_SYMBOL_GPL(rtnl_kill_links);
+
+/**
+ * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
+ * @ops: struct rtnl_link_ops * to unregister
+ *
+ * The caller must hold the rtnl_mutex.
+ */
+void __rtnl_link_unregister(struct rtnl_link_ops *ops)
+{
+	struct net *net;
+
+	for_each_net(net) {
+		__rtnl_kill_links(net, ops);
+	}
+	list_del(&ops->list);
+}
+
+EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
+
+/**
+ * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
+ * @ops: struct rtnl_link_ops * to unregister
+ */
+void rtnl_link_unregister(struct rtnl_link_ops *ops)
+{
+	rtnl_lock();
+	__rtnl_link_unregister(ops);
+	rtnl_unlock();
+}
+
+EXPORT_SYMBOL_GPL(rtnl_link_unregister);
+
+static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
+{
+	const struct rtnl_link_ops *ops;
+
+	list_for_each_entry(ops, &link_ops, list) {
+		if (!strcmp(ops->kind, kind))
+			return ops;
+	}
+	return NULL;
+}
+
+static size_t rtnl_link_get_size(const struct net_device *dev)
+{
+	const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
+	size_t size;
+
+	if (!ops)
+		return 0;
+
+	size = nlmsg_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */
+	       nlmsg_total_size(strlen(ops->kind) + 1);	 /* IFLA_INFO_KIND */
+
+	if (ops->get_size)
+		/* IFLA_INFO_DATA + nested data */
+		size += nlmsg_total_size(sizeof(struct nlattr)) +
+			ops->get_size(dev);
+
+	if (ops->get_xstats_size)
+		size += ops->get_xstats_size(dev);	/* IFLA_INFO_XSTATS */
+
+	return size;
+}
+
+static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
+{
+	const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
+	struct nlattr *linkinfo, *data;
+	int err = -EMSGSIZE;
+
+	linkinfo = nla_nest_start(skb, IFLA_LINKINFO);
+	if (linkinfo == NULL)
+		goto out;
+
+	if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0)
+		goto err_cancel_link;
+	if (ops->fill_xstats) {
+		err = ops->fill_xstats(skb, dev);
+		if (err < 0)
+			goto err_cancel_link;
+	}
+	if (ops->fill_info) {
+		data = nla_nest_start(skb, IFLA_INFO_DATA);
+		if (data == NULL)
+			goto err_cancel_link;
+		err = ops->fill_info(skb, dev);
+		if (err < 0)
+			goto err_cancel_data;
+		nla_nest_end(skb, data);
+	}
+
+	nla_nest_end(skb, linkinfo);
+	return 0;
+
+err_cancel_data:
+	nla_nest_cancel(skb, data);
+err_cancel_link:
+	nla_nest_cancel(skb, linkinfo);
+out:
+	return err;
+}
+
+static const int rtm_min[RTM_NR_FAMILIES] =
+{
+	[RTM_FAM(RTM_NEWLINK)]      = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+	[RTM_FAM(RTM_NEWADDR)]      = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
+	[RTM_FAM(RTM_NEWROUTE)]     = NLMSG_LENGTH(sizeof(struct rtmsg)),
+	[RTM_FAM(RTM_NEWRULE)]      = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)),
+	[RTM_FAM(RTM_NEWQDISC)]     = NLMSG_LENGTH(sizeof(struct tcmsg)),
+	[RTM_FAM(RTM_NEWTCLASS)]    = NLMSG_LENGTH(sizeof(struct tcmsg)),
+	[RTM_FAM(RTM_NEWTFILTER)]   = NLMSG_LENGTH(sizeof(struct tcmsg)),
+	[RTM_FAM(RTM_NEWACTION)]    = NLMSG_LENGTH(sizeof(struct tcamsg)),
+	[RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+	[RTM_FAM(RTM_GETANYCAST)]   = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+};
+
+static const int rta_max[RTM_NR_FAMILIES] =
+{
+	[RTM_FAM(RTM_NEWLINK)]      = IFLA_MAX,
+	[RTM_FAM(RTM_NEWADDR)]      = IFA_MAX,
+	[RTM_FAM(RTM_NEWROUTE)]     = RTA_MAX,
+	[RTM_FAM(RTM_NEWRULE)]      = FRA_MAX,
+	[RTM_FAM(RTM_NEWQDISC)]     = TCA_MAX,
+	[RTM_FAM(RTM_NEWTCLASS)]    = TCA_MAX,
+	[RTM_FAM(RTM_NEWTFILTER)]   = TCA_MAX,
+	[RTM_FAM(RTM_NEWACTION)]    = TCAA_MAX,
+};
+
+void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
+{
+	struct rtattr *rta;
+	int size = RTA_LENGTH(attrlen);
+
+	rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
+	rta->rta_type = attrtype;
+	rta->rta_len = size;
+	memcpy(RTA_DATA(rta), data, attrlen);
+	memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
+}
+
+int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned group, int echo)
+{
+	struct sock *rtnl = net->rtnl;
+	int err = 0;
+
+	NETLINK_CB(skb).dst_group = group;
+	if (echo)
+		atomic_inc(&skb->users);
+	netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
+	if (echo)
+		err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
+	return err;
+}
+
+int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid)
+{
+	struct sock *rtnl = net->rtnl;
+
+	return nlmsg_unicast(rtnl, skb, pid);
+}
+
+int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
+		struct nlmsghdr *nlh, gfp_t flags)
+{
+	struct sock *rtnl = net->rtnl;
+	int report = 0;
+
+	if (nlh)
+		report = nlmsg_report(nlh);
+
+	return nlmsg_notify(rtnl, skb, pid, group, report, flags);
+}
+
+void rtnl_set_sk_err(struct net *net, u32 group, int error)
+{
+	struct sock *rtnl = net->rtnl;
+
+	netlink_set_err(rtnl, 0, group, error);
+}
+
+int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
+{
+	struct nlattr *mx;
+	int i, valid = 0;
+
+	mx = nla_nest_start(skb, RTA_METRICS);
+	if (mx == NULL)
+		return -ENOBUFS;
+
+	for (i = 0; i < RTAX_MAX; i++) {
+		if (metrics[i]) {
+			valid++;
+			NLA_PUT_U32(skb, i+1, metrics[i]);
+		}
+	}
+
+	if (!valid) {
+		nla_nest_cancel(skb, mx);
+		return 0;
+	}
+
+	return nla_nest_end(skb, mx);
+
+nla_put_failure:
+	nla_nest_cancel(skb, mx);
+	return -EMSGSIZE;
+}
+
+int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
+		       u32 ts, u32 tsage, long expires, u32 error)
+{
+	struct rta_cacheinfo ci = {
+		.rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse),
+		.rta_used = dst->__use,
+		.rta_clntref = atomic_read(&(dst->__refcnt)),
+		.rta_error = error,
+		.rta_id =  id,
+		.rta_ts = ts,
+		.rta_tsage = tsage,
+	};
+
+	if (expires)
+		ci.rta_expires = jiffies_to_clock_t(expires);
+
+	return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
+}
+
+EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
+
+static void set_operstate(struct net_device *dev, unsigned char transition)
+{
+	unsigned char operstate = dev->operstate;
+
+	switch(transition) {
+	case IF_OPER_UP:
+		if ((operstate == IF_OPER_DORMANT ||
+		     operstate == IF_OPER_UNKNOWN) &&
+		    !netif_dormant(dev))
+			operstate = IF_OPER_UP;
+		break;
+
+	case IF_OPER_DORMANT:
+		if (operstate == IF_OPER_UP ||
+		    operstate == IF_OPER_UNKNOWN)
+			operstate = IF_OPER_DORMANT;
+		break;
+	}
+
+	if (dev->operstate != operstate) {
+		write_lock_bh(&dev_base_lock);
+		dev->operstate = operstate;
+		write_unlock_bh(&dev_base_lock);
+		netdev_state_change(dev);
+	}
+}
+
+static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
+				 const struct net_device_stats *b)
+{
+	a->rx_packets = b->rx_packets;
+	a->tx_packets = b->tx_packets;
+	a->rx_bytes = b->rx_bytes;
+	a->tx_bytes = b->tx_bytes;
+	a->rx_errors = b->rx_errors;
+	a->tx_errors = b->tx_errors;
+	a->rx_dropped = b->rx_dropped;
+	a->tx_dropped = b->tx_dropped;
+
+	a->multicast = b->multicast;
+	a->collisions = b->collisions;
+
+	a->rx_length_errors = b->rx_length_errors;
+	a->rx_over_errors = b->rx_over_errors;
+	a->rx_crc_errors = b->rx_crc_errors;
+	a->rx_frame_errors = b->rx_frame_errors;
+	a->rx_fifo_errors = b->rx_fifo_errors;
+	a->rx_missed_errors = b->rx_missed_errors;
+
+	a->tx_aborted_errors = b->tx_aborted_errors;
+	a->tx_carrier_errors = b->tx_carrier_errors;
+	a->tx_fifo_errors = b->tx_fifo_errors;
+	a->tx_heartbeat_errors = b->tx_heartbeat_errors;
+	a->tx_window_errors = b->tx_window_errors;
+
+	a->rx_compressed = b->rx_compressed;
+	a->tx_compressed = b->tx_compressed;
+};
+
+static inline size_t if_nlmsg_size(const struct net_device *dev)
+{
+	return NLMSG_ALIGN(sizeof(struct ifinfomsg))
+	       + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
+	       + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
+	       + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
+	       + nla_total_size(sizeof(struct rtnl_link_ifmap))
+	       + nla_total_size(sizeof(struct rtnl_link_stats))
+	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
+	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
+	       + nla_total_size(4) /* IFLA_TXQLEN */
+	       + nla_total_size(4) /* IFLA_WEIGHT */
+	       + nla_total_size(4) /* IFLA_MTU */
+	       + nla_total_size(4) /* IFLA_LINK */
+	       + nla_total_size(4) /* IFLA_MASTER */
+	       + nla_total_size(1) /* IFLA_OPERSTATE */
+	       + nla_total_size(1) /* IFLA_LINKMODE */
+	       + rtnl_link_get_size(dev); /* IFLA_LINKINFO */
+}
+
+static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
+			    int type, u32 pid, u32 seq, u32 change,
+			    unsigned int flags)
+{
+	struct netdev_queue *txq;
+	struct ifinfomsg *ifm;
+	struct nlmsghdr *nlh;
+	const struct net_device_stats *stats;
+	struct nlattr *attr;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ifm = nlmsg_data(nlh);
+	ifm->ifi_family = AF_UNSPEC;
+	ifm->__ifi_pad = 0;
+	ifm->ifi_type = dev->type;
+	ifm->ifi_index = dev->ifindex;
+	ifm->ifi_flags = dev_get_flags(dev);
+	ifm->ifi_change = change;
+
+	NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
+	NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len);
+	NLA_PUT_U8(skb, IFLA_OPERSTATE,
+		   netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
+	NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode);
+	NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
+
+	if (dev->ifindex != dev->iflink)
+		NLA_PUT_U32(skb, IFLA_LINK, dev->iflink);
+
+	if (dev->master)
+		NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
+
+	txq = netdev_get_tx_queue(dev, 0);
+	if (txq->qdisc_sleeping)
+		NLA_PUT_STRING(skb, IFLA_QDISC, txq->qdisc_sleeping->ops->id);
+
+	if (dev->ifalias)
+		NLA_PUT_STRING(skb, IFLA_IFALIAS, dev->ifalias);
+
+	if (1) {
+		struct rtnl_link_ifmap map = {
+			.mem_start   = dev->mem_start,
+			.mem_end     = dev->mem_end,
+			.base_addr   = dev->base_addr,
+			.irq         = dev->irq,
+			.dma         = dev->dma,
+			.port        = dev->if_port,
+		};
+		NLA_PUT(skb, IFLA_MAP, sizeof(map), &map);
+	}
+
+	if (dev->addr_len) {
+		NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
+		NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast);
+	}
+
+	attr = nla_reserve(skb, IFLA_STATS,
+			sizeof(struct rtnl_link_stats));
+	if (attr == NULL)
+		goto nla_put_failure;
+
+	stats = dev_get_stats(dev);
+	copy_rtnl_link_stats(nla_data(attr), stats);
+
+	if (dev->rtnl_link_ops) {
+		if (rtnl_link_fill(skb, dev) < 0)
+			goto nla_put_failure;
+	}
+
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct net *net = sock_net(skb->sk);
+	int idx;
+	int s_idx = cb->args[0];
+	struct net_device *dev;
+
+	idx = 0;
+	for_each_netdev(net, dev) {
+		if (idx < s_idx)
+			goto cont;
+		if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
+				     NETLINK_CB(cb->skb).pid,
+				     cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0)
+			break;
+cont:
+		idx++;
+	}
+	cb->args[0] = idx;
+
+	return skb->len;
+}
+
+const struct nla_policy ifla_policy[IFLA_MAX+1] = {
+	[IFLA_IFNAME]		= { .type = NLA_STRING, .len = IFNAMSIZ-1 },
+	[IFLA_ADDRESS]		= { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
+	[IFLA_BROADCAST]	= { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
+	[IFLA_MAP]		= { .len = sizeof(struct rtnl_link_ifmap) },
+	[IFLA_MTU]		= { .type = NLA_U32 },
+	[IFLA_LINK]		= { .type = NLA_U32 },
+	[IFLA_TXQLEN]		= { .type = NLA_U32 },
+	[IFLA_WEIGHT]		= { .type = NLA_U32 },
+	[IFLA_OPERSTATE]	= { .type = NLA_U8 },
+	[IFLA_LINKMODE]		= { .type = NLA_U8 },
+	[IFLA_LINKINFO]		= { .type = NLA_NESTED },
+	[IFLA_NET_NS_PID]	= { .type = NLA_U32 },
+	[IFLA_IFALIAS]	        = { .type = NLA_STRING, .len = IFALIASZ-1 },
+};
+
+static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
+	[IFLA_INFO_KIND]	= { .type = NLA_STRING },
+	[IFLA_INFO_DATA]	= { .type = NLA_NESTED },
+};
+
+static struct net *get_net_ns_by_pid(pid_t pid)
+{
+	struct task_struct *tsk;
+	struct net *net;
+
+	/* Lookup the network namespace */
+	net = ERR_PTR(-ESRCH);
+	rcu_read_lock();
+	tsk = find_task_by_vpid(pid);
+	if (tsk) {
+		struct nsproxy *nsproxy;
+		nsproxy = task_nsproxy(tsk);
+		if (nsproxy)
+			net = get_net(nsproxy->net_ns);
+	}
+	rcu_read_unlock();
+	return net;
+}
+
+static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
+{
+	if (dev) {
+		if (tb[IFLA_ADDRESS] &&
+		    nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
+			return -EINVAL;
+
+		if (tb[IFLA_BROADCAST] &&
+		    nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
+		      struct nlattr **tb, char *ifname, int modified)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int send_addr_notify = 0;
+	int err;
+
+	if (tb[IFLA_NET_NS_PID]) {
+		struct net *net;
+		net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
+		if (IS_ERR(net)) {
+			err = PTR_ERR(net);
+			goto errout;
+		}
+		err = dev_change_net_namespace(dev, net, ifname);
+		put_net(net);
+		if (err)
+			goto errout;
+		modified = 1;
+	}
+
+	if (tb[IFLA_MAP]) {
+		struct rtnl_link_ifmap *u_map;
+		struct ifmap k_map;
+
+		if (!ops->ndo_set_config) {
+			err = -EOPNOTSUPP;
+			goto errout;
+		}
+
+		if (!netif_device_present(dev)) {
+			err = -ENODEV;
+			goto errout;
+		}
+
+		u_map = nla_data(tb[IFLA_MAP]);
+		k_map.mem_start = (unsigned long) u_map->mem_start;
+		k_map.mem_end = (unsigned long) u_map->mem_end;
+		k_map.base_addr = (unsigned short) u_map->base_addr;
+		k_map.irq = (unsigned char) u_map->irq;
+		k_map.dma = (unsigned char) u_map->dma;
+		k_map.port = (unsigned char) u_map->port;
+
+		err = ops->ndo_set_config(dev, &k_map);
+		if (err < 0)
+			goto errout;
+
+		modified = 1;
+	}
+
+	if (tb[IFLA_ADDRESS]) {
+		struct sockaddr *sa;
+		int len;
+
+		if (!ops->ndo_set_mac_address) {
+			err = -EOPNOTSUPP;
+			goto errout;
+		}
+
+		if (!netif_device_present(dev)) {
+			err = -ENODEV;
+			goto errout;
+		}
+
+		len = sizeof(sa_family_t) + dev->addr_len;
+		sa = kmalloc(len, GFP_KERNEL);
+		if (!sa) {
+			err = -ENOMEM;
+			goto errout;
+		}
+		sa->sa_family = dev->type;
+		memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
+		       dev->addr_len);
+		err = ops->ndo_set_mac_address(dev, sa);
+		kfree(sa);
+		if (err)
+			goto errout;
+		send_addr_notify = 1;
+		modified = 1;
+	}
+
+	if (tb[IFLA_MTU]) {
+		err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
+		if (err < 0)
+			goto errout;
+		modified = 1;
+	}
+
+	/*
+	 * Interface selected by interface index but interface
+	 * name provided implies that a name change has been
+	 * requested.
+	 */
+	if (ifm->ifi_index > 0 && ifname[0]) {
+		err = dev_change_name(dev, ifname);
+		if (err < 0)
+			goto errout;
+		modified = 1;
+	}
+
+	if (tb[IFLA_IFALIAS]) {
+		err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
+				    nla_len(tb[IFLA_IFALIAS]));
+		if (err < 0)
+			goto errout;
+		modified = 1;
+	}
+
+	if (tb[IFLA_BROADCAST]) {
+		nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
+		send_addr_notify = 1;
+	}
+
+	if (ifm->ifi_flags || ifm->ifi_change) {
+		unsigned int flags = ifm->ifi_flags;
+
+		/* bugwards compatibility: ifi_change == 0 is treated as ~0 */
+		if (ifm->ifi_change)
+			flags = (flags & ifm->ifi_change) |
+				(dev->flags & ~ifm->ifi_change);
+		err = dev_change_flags(dev, flags);
+		if (err < 0)
+			goto errout;
+	}
+
+	if (tb[IFLA_TXQLEN])
+		dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
+
+	if (tb[IFLA_OPERSTATE])
+		set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
+
+	if (tb[IFLA_LINKMODE]) {
+		write_lock_bh(&dev_base_lock);
+		dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+		write_unlock_bh(&dev_base_lock);
+	}
+
+	err = 0;
+
+errout:
+	if (err < 0 && modified && net_ratelimit())
+		printk(KERN_WARNING "A link change request failed with "
+		       "some changes comitted already. Interface %s may "
+		       "have been left with an inconsistent configuration, "
+		       "please check.\n", dev->name);
+
+	if (send_addr_notify)
+		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+	return err;
+}
+
+static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ifinfomsg *ifm;
+	struct net_device *dev;
+	int err;
+	struct nlattr *tb[IFLA_MAX+1];
+	char ifname[IFNAMSIZ];
+
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		goto errout;
+
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+	else
+		ifname[0] = '\0';
+
+	err = -EINVAL;
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0)
+		dev = dev_get_by_index(net, ifm->ifi_index);
+	else if (tb[IFLA_IFNAME])
+		dev = dev_get_by_name(net, ifname);
+	else
+		goto errout;
+
+	if (dev == NULL) {
+		err = -ENODEV;
+		goto errout;
+	}
+
+	if ((err = validate_linkmsg(dev, tb)) < 0)
+		goto errout_dev;
+
+	err = do_setlink(dev, ifm, tb, ifname, 0);
+errout_dev:
+	dev_put(dev);
+errout:
+	return err;
+}
+
+static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	const struct rtnl_link_ops *ops;
+	struct net_device *dev;
+	struct ifinfomsg *ifm;
+	char ifname[IFNAMSIZ];
+	struct nlattr *tb[IFLA_MAX+1];
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		return err;
+
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0)
+		dev = __dev_get_by_index(net, ifm->ifi_index);
+	else if (tb[IFLA_IFNAME])
+		dev = __dev_get_by_name(net, ifname);
+	else
+		return -EINVAL;
+
+	if (!dev)
+		return -ENODEV;
+
+	ops = dev->rtnl_link_ops;
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	ops->dellink(dev);
+	return 0;
+}
+
+struct net_device *rtnl_create_link(struct net *net, char *ifname,
+		const struct rtnl_link_ops *ops, struct nlattr *tb[])
+{
+	int err;
+	struct net_device *dev;
+
+	err = -ENOMEM;
+	dev = alloc_netdev(ops->priv_size, ifname, ops->setup);
+	if (!dev)
+		goto err;
+
+	if (strchr(dev->name, '%')) {
+		err = dev_alloc_name(dev, dev->name);
+		if (err < 0)
+			goto err_free;
+	}
+
+	dev_net_set(dev, net);
+	dev->rtnl_link_ops = ops;
+
+	if (tb[IFLA_MTU])
+		dev->mtu = nla_get_u32(tb[IFLA_MTU]);
+	if (tb[IFLA_ADDRESS])
+		memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
+				nla_len(tb[IFLA_ADDRESS]));
+	if (tb[IFLA_BROADCAST])
+		memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
+				nla_len(tb[IFLA_BROADCAST]));
+	if (tb[IFLA_TXQLEN])
+		dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
+	if (tb[IFLA_OPERSTATE])
+		set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
+	if (tb[IFLA_LINKMODE])
+		dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+
+	return dev;
+
+err_free:
+	free_netdev(dev);
+err:
+	return ERR_PTR(err);
+}
+
+static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	const struct rtnl_link_ops *ops;
+	struct net_device *dev;
+	struct ifinfomsg *ifm;
+	char kind[MODULE_NAME_LEN];
+	char ifname[IFNAMSIZ];
+	struct nlattr *tb[IFLA_MAX+1];
+	struct nlattr *linkinfo[IFLA_INFO_MAX+1];
+	int err;
+
+#ifdef CONFIG_MODULES
+replay:
+#endif
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		return err;
+
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+	else
+		ifname[0] = '\0';
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0)
+		dev = __dev_get_by_index(net, ifm->ifi_index);
+	else if (ifname[0])
+		dev = __dev_get_by_name(net, ifname);
+	else
+		dev = NULL;
+
+	if ((err = validate_linkmsg(dev, tb)) < 0)
+		return err;
+
+	if (tb[IFLA_LINKINFO]) {
+		err = nla_parse_nested(linkinfo, IFLA_INFO_MAX,
+				       tb[IFLA_LINKINFO], ifla_info_policy);
+		if (err < 0)
+			return err;
+	} else
+		memset(linkinfo, 0, sizeof(linkinfo));
+
+	if (linkinfo[IFLA_INFO_KIND]) {
+		nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
+		ops = rtnl_link_ops_get(kind);
+	} else {
+		kind[0] = '\0';
+		ops = NULL;
+	}
+
+	if (1) {
+		struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL;
+
+		if (ops) {
+			if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
+				err = nla_parse_nested(attr, ops->maxtype,
+						       linkinfo[IFLA_INFO_DATA],
+						       ops->policy);
+				if (err < 0)
+					return err;
+				data = attr;
+			}
+			if (ops->validate) {
+				err = ops->validate(tb, data);
+				if (err < 0)
+					return err;
+			}
+		}
+
+		if (dev) {
+			int modified = 0;
+
+			if (nlh->nlmsg_flags & NLM_F_EXCL)
+				return -EEXIST;
+			if (nlh->nlmsg_flags & NLM_F_REPLACE)
+				return -EOPNOTSUPP;
+
+			if (linkinfo[IFLA_INFO_DATA]) {
+				if (!ops || ops != dev->rtnl_link_ops ||
+				    !ops->changelink)
+					return -EOPNOTSUPP;
+
+				err = ops->changelink(dev, tb, data);
+				if (err < 0)
+					return err;
+				modified = 1;
+			}
+
+			return do_setlink(dev, ifm, tb, ifname, modified);
+		}
+
+		if (!(nlh->nlmsg_flags & NLM_F_CREATE))
+			return -ENODEV;
+
+		if (ifm->ifi_index || ifm->ifi_flags || ifm->ifi_change)
+			return -EOPNOTSUPP;
+		if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
+			return -EOPNOTSUPP;
+
+		if (!ops) {
+#ifdef CONFIG_MODULES
+			if (kind[0]) {
+				__rtnl_unlock();
+				request_module("rtnl-link-%s", kind);
+				rtnl_lock();
+				ops = rtnl_link_ops_get(kind);
+				if (ops)
+					goto replay;
+			}
+#endif
+			return -EOPNOTSUPP;
+		}
+
+		if (!ifname[0])
+			snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
+
+		dev = rtnl_create_link(net, ifname, ops, tb);
+
+		if (IS_ERR(dev))
+			err = PTR_ERR(dev);
+		else if (ops->newlink)
+			err = ops->newlink(dev, tb, data);
+		else
+			err = register_netdevice(dev);
+
+		if (err < 0 && !IS_ERR(dev))
+			free_netdev(dev);
+		return err;
+	}
+}
+
+static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ifinfomsg *ifm;
+	struct nlattr *tb[IFLA_MAX+1];
+	struct net_device *dev = NULL;
+	struct sk_buff *nskb;
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		return err;
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0) {
+		dev = dev_get_by_index(net, ifm->ifi_index);
+		if (dev == NULL)
+			return -ENODEV;
+	} else
+		return -EINVAL;
+
+	nskb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
+	if (nskb == NULL) {
+		err = -ENOBUFS;
+		goto errout;
+	}
+
+	err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).pid,
+			       nlh->nlmsg_seq, 0, 0);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in if_nlmsg_size */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(nskb);
+		goto errout;
+	}
+	err = rtnl_unicast(nskb, net, NETLINK_CB(skb).pid);
+errout:
+	dev_put(dev);
+
+	return err;
+}
+
+static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	int idx;
+	int s_idx = cb->family;
+
+	if (s_idx == 0)
+		s_idx = 1;
+	for (idx=1; idx<NPROTO; idx++) {
+		int type = cb->nlh->nlmsg_type-RTM_BASE;
+		if (idx < s_idx || idx == PF_PACKET)
+			continue;
+		if (rtnl_msg_handlers[idx] == NULL ||
+		    rtnl_msg_handlers[idx][type].dumpit == NULL)
+			continue;
+		if (idx > s_idx)
+			memset(&cb->args[0], 0, sizeof(cb->args));
+		if (rtnl_msg_handlers[idx][type].dumpit(skb, cb))
+			break;
+	}
+	cb->family = idx;
+
+	return skb->len;
+}
+
+void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
+{
+	struct net *net = dev_net(dev);
+	struct sk_buff *skb;
+	int err = -ENOBUFS;
+
+	skb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
+	if (skb == NULL)
+		goto errout;
+
+	err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in if_nlmsg_size() */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(skb);
+		goto errout;
+	}
+	err = rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
+errout:
+	if (err < 0)
+		rtnl_set_sk_err(net, RTNLGRP_LINK, err);
+}
+
+/* Protected by RTNL sempahore.  */
+static struct rtattr **rta_buf;
+static int rtattr_max;
+
+/* Process one rtnetlink message. */
+
+static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+{
+	struct net *net = sock_net(skb->sk);
+	rtnl_doit_func doit;
+	int sz_idx, kind;
+	int min_len;
+	int family;
+	int type;
+	int err;
+
+	type = nlh->nlmsg_type;
+	if (type > RTM_MAX)
+		return -EOPNOTSUPP;
+
+	type -= RTM_BASE;
+
+	/* All the messages must have at least 1 byte length */
+	if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
+		return 0;
+
+	family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family;
+	if (family >= NPROTO)
+		return -EAFNOSUPPORT;
+
+	sz_idx = type>>2;
+	kind = type&3;
+
+	if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
+		struct sock *rtnl;
+		rtnl_dumpit_func dumpit;
+
+		dumpit = rtnl_get_dumpit(family, type);
+		if (dumpit == NULL)
+			return -EOPNOTSUPP;
+
+		__rtnl_unlock();
+		rtnl = net->rtnl;
+		err = netlink_dump_start(rtnl, skb, nlh, dumpit, NULL);
+		rtnl_lock();
+		return err;
+	}
+
+	memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
+
+	min_len = rtm_min[sz_idx];
+	if (nlh->nlmsg_len < min_len)
+		return -EINVAL;
+
+	if (nlh->nlmsg_len > min_len) {
+		int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
+		struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len);
+
+		while (RTA_OK(attr, attrlen)) {
+			unsigned flavor = attr->rta_type;
+			if (flavor) {
+				if (flavor > rta_max[sz_idx])
+					return -EINVAL;
+				rta_buf[flavor-1] = attr;
+			}
+			attr = RTA_NEXT(attr, attrlen);
+		}
+	}
+
+	doit = rtnl_get_doit(family, type);
+	if (doit == NULL)
+		return -EOPNOTSUPP;
+
+	return doit(skb, nlh, (void *)&rta_buf[0]);
+}
+
+static void rtnetlink_rcv(struct sk_buff *skb)
+{
+	rtnl_lock();
+	netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
+	rtnl_unlock();
+}
+
+static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+	struct net_device *dev = ptr;
+
+	switch (event) {
+	case NETDEV_UNREGISTER:
+		rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
+		break;
+	case NETDEV_REGISTER:
+		rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
+		break;
+	case NETDEV_UP:
+	case NETDEV_DOWN:
+		rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
+		break;
+	case NETDEV_CHANGE:
+	case NETDEV_GOING_DOWN:
+		break;
+	default:
+		rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
+		break;
+	}
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block rtnetlink_dev_notifier = {
+	.notifier_call	= rtnetlink_event,
+};
+
+
+static int rtnetlink_net_init(struct net *net)
+{
+	struct sock *sk;
+	sk = netlink_kernel_create(net, NETLINK_ROUTE, RTNLGRP_MAX,
+				   rtnetlink_rcv, &rtnl_mutex, THIS_MODULE);
+	if (!sk)
+		return -ENOMEM;
+	net->rtnl = sk;
+	return 0;
+}
+
+static void rtnetlink_net_exit(struct net *net)
+{
+	netlink_kernel_release(net->rtnl);
+	net->rtnl = NULL;
+}
+
+static struct pernet_operations rtnetlink_net_ops = {
+	.init = rtnetlink_net_init,
+	.exit = rtnetlink_net_exit,
+};
+
+void __init rtnetlink_init(void)
+{
+	int i;
+
+	rtattr_max = 0;
+	for (i = 0; i < ARRAY_SIZE(rta_max); i++)
+		if (rta_max[i] > rtattr_max)
+			rtattr_max = rta_max[i];
+	rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL);
+	if (!rta_buf)
+		panic("rtnetlink_init: cannot allocate rta_buf\n");
+
+	if (register_pernet_subsys(&rtnetlink_net_ops))
+		panic("rtnetlink_init: cannot initialize rtnetlink\n");
+
+	netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);
+	register_netdevice_notifier(&rtnetlink_dev_notifier);
+
+	rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, rtnl_dump_ifinfo);
+	rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL);
+	rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL);
+	rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL);
+
+	rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all);
+	rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all);
+}
+
+EXPORT_SYMBOL(__rta_fill);
+EXPORT_SYMBOL(rtnetlink_put_metrics);
+EXPORT_SYMBOL(rtnl_lock);
+EXPORT_SYMBOL(rtnl_trylock);
+EXPORT_SYMBOL(rtnl_unlock);
+EXPORT_SYMBOL(rtnl_is_locked);
+EXPORT_SYMBOL(rtnl_unicast);
+EXPORT_SYMBOL(rtnl_notify);
+EXPORT_SYMBOL(rtnl_set_sk_err);
+EXPORT_SYMBOL(rtnl_create_link);
+EXPORT_SYMBOL(ifla_policy);
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/skb_dma_map.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/skb_dma_map.c.svn-base
new file mode 100644
index 00000000..86234923
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/skb_dma_map.c.svn-base
@@ -0,0 +1,66 @@
+/* skb_dma_map.c: DMA mapping helpers for socket buffers.
+ *
+ * Copyright (C) David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/skbuff.h>
+
+int skb_dma_map(struct device *dev, struct sk_buff *skb,
+		enum dma_data_direction dir)
+{
+	struct skb_shared_info *sp = skb_shinfo(skb);
+	dma_addr_t map;
+	int i;
+
+	map = dma_map_single(dev, skb->data,
+			     skb_headlen(skb), dir);
+	if (dma_mapping_error(dev, map))
+		goto out_err;
+
+	sp->dma_maps[0] = map;
+	for (i = 0; i < sp->nr_frags; i++) {
+		skb_frag_t *fp = &sp->frags[i];
+
+		map = dma_map_page(dev, fp->page, fp->page_offset,
+				   fp->size, dir);
+		if (dma_mapping_error(dev, map))
+			goto unwind;
+		sp->dma_maps[i + 1] = map;
+	}
+	sp->num_dma_maps = i + 1;
+
+	return 0;
+
+unwind:
+	while (--i >= 0) {
+		skb_frag_t *fp = &sp->frags[i];
+
+		dma_unmap_page(dev, sp->dma_maps[i + 1],
+			       fp->size, dir);
+	}
+	dma_unmap_single(dev, sp->dma_maps[0],
+			 skb_headlen(skb), dir);
+out_err:
+	return -ENOMEM;
+}
+EXPORT_SYMBOL(skb_dma_map);
+
+void skb_dma_unmap(struct device *dev, struct sk_buff *skb,
+		   enum dma_data_direction dir)
+{
+	struct skb_shared_info *sp = skb_shinfo(skb);
+	int i;
+
+	dma_unmap_single(dev, sp->dma_maps[0],
+			 skb_headlen(skb), dir);
+	for (i = 0; i < sp->nr_frags; i++) {
+		skb_frag_t *fp = &sp->frags[i];
+
+		dma_unmap_page(dev, sp->dma_maps[i + 1],
+			       fp->size, dir);
+	}
+}
+EXPORT_SYMBOL(skb_dma_unmap);
diff --git a/libdde_linux26/contrib/net/core/.svn/text-base/sock.c.svn-base b/libdde_linux26/contrib/net/core/.svn/text-base/sock.c.svn-base
new file mode 100644
index 00000000..5f97caa1
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/.svn/text-base/sock.c.svn-base
@@ -0,0 +1,2297 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Generic socket support routines. Memory allocators, socket lock/release
+ *		handler for protocols to use and generic option handler.
+ *
+ *
+ * Authors:	Ross Biro
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *		Florian La Roche, <flla@stud.uni-sb.de>
+ *		Alan Cox, <A.Cox@swansea.ac.uk>
+ *
+ * Fixes:
+ *		Alan Cox	: 	Numerous verify_area() problems
+ *		Alan Cox	:	Connecting on a connecting socket
+ *					now returns an error for tcp.
+ *		Alan Cox	:	sock->protocol is set correctly.
+ *					and is not sometimes left as 0.
+ *		Alan Cox	:	connect handles icmp errors on a
+ *					connect properly. Unfortunately there
+ *					is a restart syscall nasty there. I
+ *					can't match BSD without hacking the C
+ *					library. Ideas urgently sought!
+ *		Alan Cox	:	Disallow bind() to addresses that are
+ *					not ours - especially broadcast ones!!
+ *		Alan Cox	:	Socket 1024 _IS_ ok for users. (fencepost)
+ *		Alan Cox	:	sock_wfree/sock_rfree don't destroy sockets,
+ *					instead they leave that for the DESTROY timer.
+ *		Alan Cox	:	Clean up error flag in accept
+ *		Alan Cox	:	TCP ack handling is buggy, the DESTROY timer
+ *					was buggy. Put a remove_sock() in the handler
+ *					for memory when we hit 0. Also altered the timer
+ *					code. The ACK stuff can wait and needs major
+ *					TCP layer surgery.
+ *		Alan Cox	:	Fixed TCP ack bug, removed remove sock
+ *					and fixed timer/inet_bh race.
+ *		Alan Cox	:	Added zapped flag for TCP
+ *		Alan Cox	:	Move kfree_skb into skbuff.c and tidied up surplus code
+ *		Alan Cox	:	for new sk_buff allocations wmalloc/rmalloc now call alloc_skb
+ *		Alan Cox	:	kfree_s calls now are kfree_skbmem so we can track skb resources
+ *		Alan Cox	:	Supports socket option broadcast now as does udp. Packet and raw need fixing.
+ *		Alan Cox	:	Added RCVBUF,SNDBUF size setting. It suddenly occurred to me how easy it was so...
+ *		Rick Sladkey	:	Relaxed UDP rules for matching packets.
+ *		C.E.Hawkins	:	IFF_PROMISC/SIOCGHWADDR support
+ *	Pauline Middelink	:	identd support
+ *		Alan Cox	:	Fixed connect() taking signals I think.
+ *		Alan Cox	:	SO_LINGER supported
+ *		Alan Cox	:	Error reporting fixes
+ *		Anonymous	:	inet_create tidied up (sk->reuse setting)
+ *		Alan Cox	:	inet sockets don't set sk->type!
+ *		Alan Cox	:	Split socket option code
+ *		Alan Cox	:	Callbacks
+ *		Alan Cox	:	Nagle flag for Charles & Johannes stuff
+ *		Alex		:	Removed restriction on inet fioctl
+ *		Alan Cox	:	Splitting INET from NET core
+ *		Alan Cox	:	Fixed bogus SO_TYPE handling in getsockopt()
+ *		Adam Caldwell	:	Missing return in SO_DONTROUTE/SO_DEBUG code
+ *		Alan Cox	:	Split IP from generic code
+ *		Alan Cox	:	New kfree_skbmem()
+ *		Alan Cox	:	Make SO_DEBUG superuser only.
+ *		Alan Cox	:	Allow anyone to clear SO_DEBUG
+ *					(compatibility fix)
+ *		Alan Cox	:	Added optimistic memory grabbing for AF_UNIX throughput.
+ *		Alan Cox	:	Allocator for a socket is settable.
+ *		Alan Cox	:	SO_ERROR includes soft errors.
+ *		Alan Cox	:	Allow NULL arguments on some SO_ opts
+ *		Alan Cox	: 	Generic socket allocation to make hooks
+ *					easier (suggested by Craig Metz).
+ *		Michael Pall	:	SO_ERROR returns positive errno again
+ *              Steve Whitehouse:       Added default destructor to free
+ *                                      protocol private data.
+ *              Steve Whitehouse:       Added various other default routines
+ *                                      common to several socket families.
+ *              Chris Evans     :       Call suser() check last on F_SETOWN
+ *		Jay Schulist	:	Added SO_ATTACH_FILTER and SO_DETACH_FILTER.
+ *		Andi Kleen	:	Add sock_kmalloc()/sock_kfree_s()
+ *		Andi Kleen	:	Fix write_space callback
+ *		Chris Evans	:	Security fixes - signedness again
+ *		Arnaldo C. Melo :       cleanups, use skb_queue_purge
+ *
+ * To Fix:
+ *
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/poll.h>
+#include <linux/tcp.h>
+#include <linux/init.h>
+#include <linux/highmem.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/netdevice.h>
+#include <net/protocol.h>
+#include <linux/skbuff.h>
+#include <net/net_namespace.h>
+#include <net/request_sock.h>
+#include <net/sock.h>
+#include <net/xfrm.h>
+#include <linux/ipsec.h>
+
+#include <linux/filter.h>
+
+#ifdef CONFIG_INET
+#include <net/tcp.h>
+#endif
+
+/*
+ * Each address family might have different locking rules, so we have
+ * one slock key per address family:
+ */
+static struct lock_class_key af_family_keys[AF_MAX];
+static struct lock_class_key af_family_slock_keys[AF_MAX];
+
+/*
+ * Make lock validator output more readable. (we pre-construct these
+ * strings build-time, so that runtime initialization of socket
+ * locks is fast):
+ */
+static const char *af_family_key_strings[AF_MAX+1] = {
+  "sk_lock-AF_UNSPEC", "sk_lock-AF_UNIX"     , "sk_lock-AF_INET"     ,
+  "sk_lock-AF_AX25"  , "sk_lock-AF_IPX"      , "sk_lock-AF_APPLETALK",
+  "sk_lock-AF_NETROM", "sk_lock-AF_BRIDGE"   , "sk_lock-AF_ATMPVC"   ,
+  "sk_lock-AF_X25"   , "sk_lock-AF_INET6"    , "sk_lock-AF_ROSE"     ,
+  "sk_lock-AF_DECnet", "sk_lock-AF_NETBEUI"  , "sk_lock-AF_SECURITY" ,
+  "sk_lock-AF_KEY"   , "sk_lock-AF_NETLINK"  , "sk_lock-AF_PACKET"   ,
+  "sk_lock-AF_ASH"   , "sk_lock-AF_ECONET"   , "sk_lock-AF_ATMSVC"   ,
+  "sk_lock-21"       , "sk_lock-AF_SNA"      , "sk_lock-AF_IRDA"     ,
+  "sk_lock-AF_PPPOX" , "sk_lock-AF_WANPIPE"  , "sk_lock-AF_LLC"      ,
+  "sk_lock-27"       , "sk_lock-28"          , "sk_lock-AF_CAN"      ,
+  "sk_lock-AF_TIPC"  , "sk_lock-AF_BLUETOOTH", "sk_lock-IUCV"        ,
+  "sk_lock-AF_RXRPC" , "sk_lock-AF_ISDN"     , "sk_lock-AF_PHONET"   ,
+  "sk_lock-AF_MAX"
+};
+static const char *af_family_slock_key_strings[AF_MAX+1] = {
+  "slock-AF_UNSPEC", "slock-AF_UNIX"     , "slock-AF_INET"     ,
+  "slock-AF_AX25"  , "slock-AF_IPX"      , "slock-AF_APPLETALK",
+  "slock-AF_NETROM", "slock-AF_BRIDGE"   , "slock-AF_ATMPVC"   ,
+  "slock-AF_X25"   , "slock-AF_INET6"    , "slock-AF_ROSE"     ,
+  "slock-AF_DECnet", "slock-AF_NETBEUI"  , "slock-AF_SECURITY" ,
+  "slock-AF_KEY"   , "slock-AF_NETLINK"  , "slock-AF_PACKET"   ,
+  "slock-AF_ASH"   , "slock-AF_ECONET"   , "slock-AF_ATMSVC"   ,
+  "slock-21"       , "slock-AF_SNA"      , "slock-AF_IRDA"     ,
+  "slock-AF_PPPOX" , "slock-AF_WANPIPE"  , "slock-AF_LLC"      ,
+  "slock-27"       , "slock-28"          , "slock-AF_CAN"      ,
+  "slock-AF_TIPC"  , "slock-AF_BLUETOOTH", "slock-AF_IUCV"     ,
+  "slock-AF_RXRPC" , "slock-AF_ISDN"     , "slock-AF_PHONET"   ,
+  "slock-AF_MAX"
+};
+static const char *af_family_clock_key_strings[AF_MAX+1] = {
+  "clock-AF_UNSPEC", "clock-AF_UNIX"     , "clock-AF_INET"     ,
+  "clock-AF_AX25"  , "clock-AF_IPX"      , "clock-AF_APPLETALK",
+  "clock-AF_NETROM", "clock-AF_BRIDGE"   , "clock-AF_ATMPVC"   ,
+  "clock-AF_X25"   , "clock-AF_INET6"    , "clock-AF_ROSE"     ,
+  "clock-AF_DECnet", "clock-AF_NETBEUI"  , "clock-AF_SECURITY" ,
+  "clock-AF_KEY"   , "clock-AF_NETLINK"  , "clock-AF_PACKET"   ,
+  "clock-AF_ASH"   , "clock-AF_ECONET"   , "clock-AF_ATMSVC"   ,
+  "clock-21"       , "clock-AF_SNA"      , "clock-AF_IRDA"     ,
+  "clock-AF_PPPOX" , "clock-AF_WANPIPE"  , "clock-AF_LLC"      ,
+  "clock-27"       , "clock-28"          , "clock-AF_CAN"      ,
+  "clock-AF_TIPC"  , "clock-AF_BLUETOOTH", "clock-AF_IUCV"     ,
+  "clock-AF_RXRPC" , "clock-AF_ISDN"     , "clock-AF_PHONET"   ,
+  "clock-AF_MAX"
+};
+
+/*
+ * sk_callback_lock locking rules are per-address-family,
+ * so split the lock classes by using a per-AF key:
+ */
+static struct lock_class_key af_callback_keys[AF_MAX];
+
+/* Take into consideration the size of the struct sk_buff overhead in the
+ * determination of these values, since that is non-constant across
+ * platforms.  This makes socket queueing behavior and performance
+ * not depend upon such differences.
+ */
+#define _SK_MEM_PACKETS		256
+#define _SK_MEM_OVERHEAD	(sizeof(struct sk_buff) + 256)
+#define SK_WMEM_MAX		(_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
+#define SK_RMEM_MAX		(_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
+
+/* Run time adjustable parameters. */
+__u32 sysctl_wmem_max __read_mostly = SK_WMEM_MAX;
+__u32 sysctl_rmem_max __read_mostly = SK_RMEM_MAX;
+__u32 sysctl_wmem_default __read_mostly = SK_WMEM_MAX;
+__u32 sysctl_rmem_default __read_mostly = SK_RMEM_MAX;
+
+/* Maximal space eaten by iovec or ancilliary data plus some space */
+int sysctl_optmem_max __read_mostly = sizeof(unsigned long)*(2*UIO_MAXIOV+512);
+
+static int sock_set_timeout(long *timeo_p, char __user *optval, int optlen)
+{
+	struct timeval tv;
+
+	if (optlen < sizeof(tv))
+		return -EINVAL;
+	if (copy_from_user(&tv, optval, sizeof(tv)))
+		return -EFAULT;
+	if (tv.tv_usec < 0 || tv.tv_usec >= USEC_PER_SEC)
+		return -EDOM;
+
+	if (tv.tv_sec < 0) {
+		static int warned __read_mostly;
+
+		*timeo_p = 0;
+		if (warned < 10 && net_ratelimit()) {
+			warned++;
+			printk(KERN_INFO "sock_set_timeout: `%s' (pid %d) "
+			       "tries to set negative timeout\n",
+				current->comm, task_pid_nr(current));
+		}
+		return 0;
+	}
+	*timeo_p = MAX_SCHEDULE_TIMEOUT;
+	if (tv.tv_sec == 0 && tv.tv_usec == 0)
+		return 0;
+	if (tv.tv_sec < (MAX_SCHEDULE_TIMEOUT/HZ - 1))
+		*timeo_p = tv.tv_sec*HZ + (tv.tv_usec+(1000000/HZ-1))/(1000000/HZ);
+	return 0;
+}
+
+static void sock_warn_obsolete_bsdism(const char *name)
+{
+	static int warned;
+	static char warncomm[TASK_COMM_LEN];
+	if (strcmp(warncomm, current->comm) && warned < 5) {
+		strcpy(warncomm,  current->comm);
+		printk(KERN_WARNING "process `%s' is using obsolete "
+		       "%s SO_BSDCOMPAT\n", warncomm, name);
+		warned++;
+	}
+}
+
+static void sock_disable_timestamp(struct sock *sk)
+{
+	if (sock_flag(sk, SOCK_TIMESTAMP)) {
+		sock_reset_flag(sk, SOCK_TIMESTAMP);
+		net_disable_timestamp();
+	}
+}
+
+
+int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+{
+	int err = 0;
+	int skb_len;
+
+	/* Cast sk->rcvbuf to unsigned... It's pointless, but reduces
+	   number of warnings when compiling with -W --ANK
+	 */
+	if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
+	    (unsigned)sk->sk_rcvbuf) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = sk_filter(sk, skb);
+	if (err)
+		goto out;
+
+	if (!sk_rmem_schedule(sk, skb->truesize)) {
+		err = -ENOBUFS;
+		goto out;
+	}
+
+	skb->dev = NULL;
+	skb_set_owner_r(skb, sk);
+
+	/* Cache the SKB length before we tack it onto the receive
+	 * queue.  Once it is added it no longer belongs to us and
+	 * may be freed by other threads of control pulling packets
+	 * from the queue.
+	 */
+	skb_len = skb->len;
+
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+
+	if (!sock_flag(sk, SOCK_DEAD))
+		sk->sk_data_ready(sk, skb_len);
+out:
+	return err;
+}
+EXPORT_SYMBOL(sock_queue_rcv_skb);
+
+int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)
+{
+	int rc = NET_RX_SUCCESS;
+
+	if (sk_filter(sk, skb))
+		goto discard_and_relse;
+
+	skb->dev = NULL;
+
+	if (nested)
+		bh_lock_sock_nested(sk);
+	else
+		bh_lock_sock(sk);
+	if (!sock_owned_by_user(sk)) {
+		/*
+		 * trylock + unlock semantics:
+		 */
+		mutex_acquire(&sk->sk_lock.dep_map, 0, 1, _RET_IP_);
+
+		rc = sk_backlog_rcv(sk, skb);
+
+		mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
+	} else
+		sk_add_backlog(sk, skb);
+	bh_unlock_sock(sk);
+out:
+	sock_put(sk);
+	return rc;
+discard_and_relse:
+	kfree_skb(skb);
+	goto out;
+}
+EXPORT_SYMBOL(sk_receive_skb);
+
+struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie)
+{
+	struct dst_entry *dst = sk->sk_dst_cache;
+
+	if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
+		sk->sk_dst_cache = NULL;
+		dst_release(dst);
+		return NULL;
+	}
+
+	return dst;
+}
+EXPORT_SYMBOL(__sk_dst_check);
+
+struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie)
+{
+	struct dst_entry *dst = sk_dst_get(sk);
+
+	if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
+		sk_dst_reset(sk);
+		dst_release(dst);
+		return NULL;
+	}
+
+	return dst;
+}
+EXPORT_SYMBOL(sk_dst_check);
+
+static int sock_bindtodevice(struct sock *sk, char __user *optval, int optlen)
+{
+	int ret = -ENOPROTOOPT;
+#ifdef CONFIG_NETDEVICES
+	struct net *net = sock_net(sk);
+	char devname[IFNAMSIZ];
+	int index;
+
+	/* Sorry... */
+	ret = -EPERM;
+	if (!capable(CAP_NET_RAW))
+		goto out;
+
+	ret = -EINVAL;
+	if (optlen < 0)
+		goto out;
+
+	/* Bind this socket to a particular device like "eth0",
+	 * as specified in the passed interface name. If the
+	 * name is "" or the option length is zero the socket
+	 * is not bound.
+	 */
+	if (optlen > IFNAMSIZ - 1)
+		optlen = IFNAMSIZ - 1;
+	memset(devname, 0, sizeof(devname));
+
+	ret = -EFAULT;
+	if (copy_from_user(devname, optval, optlen))
+		goto out;
+
+	if (devname[0] == '\0') {
+		index = 0;
+	} else {
+		struct net_device *dev = dev_get_by_name(net, devname);
+
+		ret = -ENODEV;
+		if (!dev)
+			goto out;
+
+		index = dev->ifindex;
+		dev_put(dev);
+	}
+
+	lock_sock(sk);
+	sk->sk_bound_dev_if = index;
+	sk_dst_reset(sk);
+	release_sock(sk);
+
+	ret = 0;
+
+out:
+#endif
+
+	return ret;
+}
+
+static inline void sock_valbool_flag(struct sock *sk, int bit, int valbool)
+{
+	if (valbool)
+		sock_set_flag(sk, bit);
+	else
+		sock_reset_flag(sk, bit);
+}
+
+/*
+ *	This is meant for all protocols to use and covers goings on
+ *	at the socket level. Everything here is generic.
+ */
+
+int sock_setsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	struct sock *sk=sock->sk;
+	int val;
+	int valbool;
+	struct linger ling;
+	int ret = 0;
+
+	/*
+	 *	Options without arguments
+	 */
+
+	if (optname == SO_BINDTODEVICE)
+		return sock_bindtodevice(sk, optval, optlen);
+
+	if (optlen < sizeof(int))
+		return -EINVAL;
+
+	if (get_user(val, (int __user *)optval))
+		return -EFAULT;
+
+	valbool = val?1:0;
+
+	lock_sock(sk);
+
+	switch(optname) {
+	case SO_DEBUG:
+		if (val && !capable(CAP_NET_ADMIN)) {
+			ret = -EACCES;
+		} else
+			sock_valbool_flag(sk, SOCK_DBG, valbool);
+		break;
+	case SO_REUSEADDR:
+		sk->sk_reuse = valbool;
+		break;
+	case SO_TYPE:
+	case SO_ERROR:
+		ret = -ENOPROTOOPT;
+		break;
+	case SO_DONTROUTE:
+		sock_valbool_flag(sk, SOCK_LOCALROUTE, valbool);
+		break;
+	case SO_BROADCAST:
+		sock_valbool_flag(sk, SOCK_BROADCAST, valbool);
+		break;
+	case SO_SNDBUF:
+		/* Don't error on this BSD doesn't and if you think
+		   about it this is right. Otherwise apps have to
+		   play 'guess the biggest size' games. RCVBUF/SNDBUF
+		   are treated in BSD as hints */
+
+		if (val > sysctl_wmem_max)
+			val = sysctl_wmem_max;
+set_sndbuf:
+		sk->sk_userlocks |= SOCK_SNDBUF_LOCK;
+		if ((val * 2) < SOCK_MIN_SNDBUF)
+			sk->sk_sndbuf = SOCK_MIN_SNDBUF;
+		else
+			sk->sk_sndbuf = val * 2;
+
+		/*
+		 *	Wake up sending tasks if we
+		 *	upped the value.
+		 */
+		sk->sk_write_space(sk);
+		break;
+
+	case SO_SNDBUFFORCE:
+		if (!capable(CAP_NET_ADMIN)) {
+			ret = -EPERM;
+			break;
+		}
+		goto set_sndbuf;
+
+	case SO_RCVBUF:
+		/* Don't error on this BSD doesn't and if you think
+		   about it this is right. Otherwise apps have to
+		   play 'guess the biggest size' games. RCVBUF/SNDBUF
+		   are treated in BSD as hints */
+
+		if (val > sysctl_rmem_max)
+			val = sysctl_rmem_max;
+set_rcvbuf:
+		sk->sk_userlocks |= SOCK_RCVBUF_LOCK;
+		/*
+		 * We double it on the way in to account for
+		 * "struct sk_buff" etc. overhead.   Applications
+		 * assume that the SO_RCVBUF setting they make will
+		 * allow that much actual data to be received on that
+		 * socket.
+		 *
+		 * Applications are unaware that "struct sk_buff" and
+		 * other overheads allocate from the receive buffer
+		 * during socket buffer allocation.
+		 *
+		 * And after considering the possible alternatives,
+		 * returning the value we actually used in getsockopt
+		 * is the most desirable behavior.
+		 */
+		if ((val * 2) < SOCK_MIN_RCVBUF)
+			sk->sk_rcvbuf = SOCK_MIN_RCVBUF;
+		else
+			sk->sk_rcvbuf = val * 2;
+		break;
+
+	case SO_RCVBUFFORCE:
+		if (!capable(CAP_NET_ADMIN)) {
+			ret = -EPERM;
+			break;
+		}
+		goto set_rcvbuf;
+
+	case SO_KEEPALIVE:
+#ifdef CONFIG_INET
+		if (sk->sk_protocol == IPPROTO_TCP)
+			tcp_set_keepalive(sk, valbool);
+#endif
+		sock_valbool_flag(sk, SOCK_KEEPOPEN, valbool);
+		break;
+
+	case SO_OOBINLINE:
+		sock_valbool_flag(sk, SOCK_URGINLINE, valbool);
+		break;
+
+	case SO_NO_CHECK:
+		sk->sk_no_check = valbool;
+		break;
+
+	case SO_PRIORITY:
+		if ((val >= 0 && val <= 6) || capable(CAP_NET_ADMIN))
+			sk->sk_priority = val;
+		else
+			ret = -EPERM;
+		break;
+
+	case SO_LINGER:
+		if (optlen < sizeof(ling)) {
+			ret = -EINVAL;	/* 1003.1g */
+			break;
+		}
+		if (copy_from_user(&ling,optval,sizeof(ling))) {
+			ret = -EFAULT;
+			break;
+		}
+		if (!ling.l_onoff)
+			sock_reset_flag(sk, SOCK_LINGER);
+		else {
+#if (BITS_PER_LONG == 32)
+			if ((unsigned int)ling.l_linger >= MAX_SCHEDULE_TIMEOUT/HZ)
+				sk->sk_lingertime = MAX_SCHEDULE_TIMEOUT;
+			else
+#endif
+				sk->sk_lingertime = (unsigned int)ling.l_linger * HZ;
+			sock_set_flag(sk, SOCK_LINGER);
+		}
+		break;
+
+	case SO_BSDCOMPAT:
+		sock_warn_obsolete_bsdism("setsockopt");
+		break;
+
+	case SO_PASSCRED:
+		if (valbool)
+			set_bit(SOCK_PASSCRED, &sock->flags);
+		else
+			clear_bit(SOCK_PASSCRED, &sock->flags);
+		break;
+
+	case SO_TIMESTAMP:
+	case SO_TIMESTAMPNS:
+		if (valbool)  {
+			if (optname == SO_TIMESTAMP)
+				sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+			else
+				sock_set_flag(sk, SOCK_RCVTSTAMPNS);
+			sock_set_flag(sk, SOCK_RCVTSTAMP);
+			sock_enable_timestamp(sk);
+		} else {
+			sock_reset_flag(sk, SOCK_RCVTSTAMP);
+			sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+		}
+		break;
+
+	case SO_RCVLOWAT:
+		if (val < 0)
+			val = INT_MAX;
+		sk->sk_rcvlowat = val ? : 1;
+		break;
+
+	case SO_RCVTIMEO:
+		ret = sock_set_timeout(&sk->sk_rcvtimeo, optval, optlen);
+		break;
+
+	case SO_SNDTIMEO:
+		ret = sock_set_timeout(&sk->sk_sndtimeo, optval, optlen);
+		break;
+
+	case SO_ATTACH_FILTER:
+		ret = -EINVAL;
+		if (optlen == sizeof(struct sock_fprog)) {
+			struct sock_fprog fprog;
+
+			ret = -EFAULT;
+			if (copy_from_user(&fprog, optval, sizeof(fprog)))
+				break;
+
+			ret = sk_attach_filter(&fprog, sk);
+		}
+		break;
+
+	case SO_DETACH_FILTER:
+		ret = sk_detach_filter(sk);
+		break;
+
+	case SO_PASSSEC:
+		if (valbool)
+			set_bit(SOCK_PASSSEC, &sock->flags);
+		else
+			clear_bit(SOCK_PASSSEC, &sock->flags);
+		break;
+	case SO_MARK:
+		if (!capable(CAP_NET_ADMIN))
+			ret = -EPERM;
+		else {
+			sk->sk_mark = val;
+		}
+		break;
+
+		/* We implement the SO_SNDLOWAT etc to
+		   not be settable (1003.1g 5.3) */
+	default:
+		ret = -ENOPROTOOPT;
+		break;
+	}
+	release_sock(sk);
+	return ret;
+}
+
+
+int sock_getsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	union {
+		int val;
+		struct linger ling;
+		struct timeval tm;
+	} v;
+
+	unsigned int lv = sizeof(int);
+	int len;
+
+	if (get_user(len, optlen))
+		return -EFAULT;
+	if (len < 0)
+		return -EINVAL;
+
+	memset(&v, 0, sizeof(v));
+
+	switch(optname) {
+	case SO_DEBUG:
+		v.val = sock_flag(sk, SOCK_DBG);
+		break;
+
+	case SO_DONTROUTE:
+		v.val = sock_flag(sk, SOCK_LOCALROUTE);
+		break;
+
+	case SO_BROADCAST:
+		v.val = !!sock_flag(sk, SOCK_BROADCAST);
+		break;
+
+	case SO_SNDBUF:
+		v.val = sk->sk_sndbuf;
+		break;
+
+	case SO_RCVBUF:
+		v.val = sk->sk_rcvbuf;
+		break;
+
+	case SO_REUSEADDR:
+		v.val = sk->sk_reuse;
+		break;
+
+	case SO_KEEPALIVE:
+		v.val = !!sock_flag(sk, SOCK_KEEPOPEN);
+		break;
+
+	case SO_TYPE:
+		v.val = sk->sk_type;
+		break;
+
+	case SO_ERROR:
+		v.val = -sock_error(sk);
+		if (v.val==0)
+			v.val = xchg(&sk->sk_err_soft, 0);
+		break;
+
+	case SO_OOBINLINE:
+		v.val = !!sock_flag(sk, SOCK_URGINLINE);
+		break;
+
+	case SO_NO_CHECK:
+		v.val = sk->sk_no_check;
+		break;
+
+	case SO_PRIORITY:
+		v.val = sk->sk_priority;
+		break;
+
+	case SO_LINGER:
+		lv		= sizeof(v.ling);
+		v.ling.l_onoff	= !!sock_flag(sk, SOCK_LINGER);
+		v.ling.l_linger	= sk->sk_lingertime / HZ;
+		break;
+
+	case SO_BSDCOMPAT:
+		sock_warn_obsolete_bsdism("getsockopt");
+		break;
+
+	case SO_TIMESTAMP:
+		v.val = sock_flag(sk, SOCK_RCVTSTAMP) &&
+				!sock_flag(sk, SOCK_RCVTSTAMPNS);
+		break;
+
+	case SO_TIMESTAMPNS:
+		v.val = sock_flag(sk, SOCK_RCVTSTAMPNS);
+		break;
+
+	case SO_RCVTIMEO:
+		lv=sizeof(struct timeval);
+		if (sk->sk_rcvtimeo == MAX_SCHEDULE_TIMEOUT) {
+			v.tm.tv_sec = 0;
+			v.tm.tv_usec = 0;
+		} else {
+			v.tm.tv_sec = sk->sk_rcvtimeo / HZ;
+			v.tm.tv_usec = ((sk->sk_rcvtimeo % HZ) * 1000000) / HZ;
+		}
+		break;
+
+	case SO_SNDTIMEO:
+		lv=sizeof(struct timeval);
+		if (sk->sk_sndtimeo == MAX_SCHEDULE_TIMEOUT) {
+			v.tm.tv_sec = 0;
+			v.tm.tv_usec = 0;
+		} else {
+			v.tm.tv_sec = sk->sk_sndtimeo / HZ;
+			v.tm.tv_usec = ((sk->sk_sndtimeo % HZ) * 1000000) / HZ;
+		}
+		break;
+
+	case SO_RCVLOWAT:
+		v.val = sk->sk_rcvlowat;
+		break;
+
+	case SO_SNDLOWAT:
+		v.val=1;
+		break;
+
+	case SO_PASSCRED:
+		v.val = test_bit(SOCK_PASSCRED, &sock->flags) ? 1 : 0;
+		break;
+
+	case SO_PEERCRED:
+		if (len > sizeof(sk->sk_peercred))
+			len = sizeof(sk->sk_peercred);
+		if (copy_to_user(optval, &sk->sk_peercred, len))
+			return -EFAULT;
+		goto lenout;
+
+	case SO_PEERNAME:
+	{
+		char address[128];
+
+		if (sock->ops->getname(sock, (struct sockaddr *)address, &lv, 2))
+			return -ENOTCONN;
+		if (lv < len)
+			return -EINVAL;
+		if (copy_to_user(optval, address, len))
+			return -EFAULT;
+		goto lenout;
+	}
+
+	/* Dubious BSD thing... Probably nobody even uses it, but
+	 * the UNIX standard wants it for whatever reason... -DaveM
+	 */
+	case SO_ACCEPTCONN:
+		v.val = sk->sk_state == TCP_LISTEN;
+		break;
+
+	case SO_PASSSEC:
+		v.val = test_bit(SOCK_PASSSEC, &sock->flags) ? 1 : 0;
+		break;
+
+	case SO_PEERSEC:
+		return security_socket_getpeersec_stream(sock, optval, optlen, len);
+
+	case SO_MARK:
+		v.val = sk->sk_mark;
+		break;
+
+	default:
+		return -ENOPROTOOPT;
+	}
+
+	if (len > lv)
+		len = lv;
+	if (copy_to_user(optval, &v, len))
+		return -EFAULT;
+lenout:
+	if (put_user(len, optlen))
+		return -EFAULT;
+	return 0;
+}
+
+/*
+ * Initialize an sk_lock.
+ *
+ * (We also register the sk_lock with the lock validator.)
+ */
+static inline void sock_lock_init(struct sock *sk)
+{
+	sock_lock_init_class_and_name(sk,
+			af_family_slock_key_strings[sk->sk_family],
+			af_family_slock_keys + sk->sk_family,
+			af_family_key_strings[sk->sk_family],
+			af_family_keys + sk->sk_family);
+}
+
+static void sock_copy(struct sock *nsk, const struct sock *osk)
+{
+#ifdef CONFIG_SECURITY_NETWORK
+	void *sptr = nsk->sk_security;
+#endif
+
+	memcpy(nsk, osk, osk->sk_prot->obj_size);
+#ifdef CONFIG_SECURITY_NETWORK
+	nsk->sk_security = sptr;
+	security_sk_clone(osk, nsk);
+#endif
+}
+
+static struct sock *sk_prot_alloc(struct proto *prot, gfp_t priority,
+		int family)
+{
+	struct sock *sk;
+	struct kmem_cache *slab;
+
+	slab = prot->slab;
+	if (slab != NULL)
+		sk = kmem_cache_alloc(slab, priority);
+	else
+		sk = kmalloc(prot->obj_size, priority);
+
+	if (sk != NULL) {
+		if (security_sk_alloc(sk, family, priority))
+			goto out_free;
+
+		if (!try_module_get(prot->owner))
+			goto out_free_sec;
+	}
+
+	return sk;
+
+out_free_sec:
+	security_sk_free(sk);
+out_free:
+	if (slab != NULL)
+		kmem_cache_free(slab, sk);
+	else
+		kfree(sk);
+	return NULL;
+}
+
+static void sk_prot_free(struct proto *prot, struct sock *sk)
+{
+	struct kmem_cache *slab;
+	struct module *owner;
+
+	owner = prot->owner;
+	slab = prot->slab;
+
+	security_sk_free(sk);
+	if (slab != NULL)
+		kmem_cache_free(slab, sk);
+	else
+		kfree(sk);
+	module_put(owner);
+}
+
+/**
+ *	sk_alloc - All socket objects are allocated here
+ *	@net: the applicable net namespace
+ *	@family: protocol family
+ *	@priority: for allocation (%GFP_KERNEL, %GFP_ATOMIC, etc)
+ *	@prot: struct proto associated with this new sock instance
+ */
+struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
+		      struct proto *prot)
+{
+	struct sock *sk;
+
+	sk = sk_prot_alloc(prot, priority | __GFP_ZERO, family);
+	if (sk) {
+		sk->sk_family = family;
+		/*
+		 * See comment in struct sock definition to understand
+		 * why we need sk_prot_creator -acme
+		 */
+		sk->sk_prot = sk->sk_prot_creator = prot;
+		sock_lock_init(sk);
+		sock_net_set(sk, get_net(net));
+	}
+
+	return sk;
+}
+
+void sk_free(struct sock *sk)
+{
+	struct sk_filter *filter;
+
+	if (sk->sk_destruct)
+		sk->sk_destruct(sk);
+
+	filter = rcu_dereference(sk->sk_filter);
+	if (filter) {
+		sk_filter_uncharge(sk, filter);
+		rcu_assign_pointer(sk->sk_filter, NULL);
+	}
+
+	sock_disable_timestamp(sk);
+
+	if (atomic_read(&sk->sk_omem_alloc))
+		printk(KERN_DEBUG "%s: optmem leakage (%d bytes) detected.\n",
+		       __func__, atomic_read(&sk->sk_omem_alloc));
+
+	put_net(sock_net(sk));
+	sk_prot_free(sk->sk_prot_creator, sk);
+}
+
+/*
+ * Last sock_put should drop referrence to sk->sk_net. It has already
+ * been dropped in sk_change_net. Taking referrence to stopping namespace
+ * is not an option.
+ * Take referrence to a socket to remove it from hash _alive_ and after that
+ * destroy it in the context of init_net.
+ */
+void sk_release_kernel(struct sock *sk)
+{
+	if (sk == NULL || sk->sk_socket == NULL)
+		return;
+
+	sock_hold(sk);
+	sock_release(sk->sk_socket);
+	release_net(sock_net(sk));
+	sock_net_set(sk, get_net(&init_net));
+	sock_put(sk);
+}
+EXPORT_SYMBOL(sk_release_kernel);
+
+struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
+{
+	struct sock *newsk;
+
+	newsk = sk_prot_alloc(sk->sk_prot, priority, sk->sk_family);
+	if (newsk != NULL) {
+		struct sk_filter *filter;
+
+		sock_copy(newsk, sk);
+
+		/* SANITY */
+		get_net(sock_net(newsk));
+		sk_node_init(&newsk->sk_node);
+		sock_lock_init(newsk);
+		bh_lock_sock(newsk);
+		newsk->sk_backlog.head	= newsk->sk_backlog.tail = NULL;
+
+		atomic_set(&newsk->sk_rmem_alloc, 0);
+		atomic_set(&newsk->sk_wmem_alloc, 0);
+		atomic_set(&newsk->sk_omem_alloc, 0);
+		skb_queue_head_init(&newsk->sk_receive_queue);
+		skb_queue_head_init(&newsk->sk_write_queue);
+#ifdef CONFIG_NET_DMA
+		skb_queue_head_init(&newsk->sk_async_wait_queue);
+#endif
+
+		rwlock_init(&newsk->sk_dst_lock);
+		rwlock_init(&newsk->sk_callback_lock);
+		lockdep_set_class_and_name(&newsk->sk_callback_lock,
+				af_callback_keys + newsk->sk_family,
+				af_family_clock_key_strings[newsk->sk_family]);
+
+		newsk->sk_dst_cache	= NULL;
+		newsk->sk_wmem_queued	= 0;
+		newsk->sk_forward_alloc = 0;
+		newsk->sk_send_head	= NULL;
+		newsk->sk_userlocks	= sk->sk_userlocks & ~SOCK_BINDPORT_LOCK;
+
+		sock_reset_flag(newsk, SOCK_DONE);
+		skb_queue_head_init(&newsk->sk_error_queue);
+
+		filter = newsk->sk_filter;
+		if (filter != NULL)
+			sk_filter_charge(newsk, filter);
+
+		if (unlikely(xfrm_sk_clone_policy(newsk))) {
+			/* It is still raw copy of parent, so invalidate
+			 * destructor and make plain sk_free() */
+			newsk->sk_destruct = NULL;
+			sk_free(newsk);
+			newsk = NULL;
+			goto out;
+		}
+
+		newsk->sk_err	   = 0;
+		newsk->sk_priority = 0;
+		atomic_set(&newsk->sk_refcnt, 2);
+
+		/*
+		 * Increment the counter in the same struct proto as the master
+		 * sock (sk_refcnt_debug_inc uses newsk->sk_prot->socks, that
+		 * is the same as sk->sk_prot->socks, as this field was copied
+		 * with memcpy).
+		 *
+		 * This _changes_ the previous behaviour, where
+		 * tcp_create_openreq_child always was incrementing the
+		 * equivalent to tcp_prot->socks (inet_sock_nr), so this have
+		 * to be taken into account in all callers. -acme
+		 */
+		sk_refcnt_debug_inc(newsk);
+		sk_set_socket(newsk, NULL);
+		newsk->sk_sleep	 = NULL;
+
+		if (newsk->sk_prot->sockets_allocated)
+			percpu_counter_inc(newsk->sk_prot->sockets_allocated);
+	}
+out:
+	return newsk;
+}
+
+EXPORT_SYMBOL_GPL(sk_clone);
+
+void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
+{
+	__sk_dst_set(sk, dst);
+	sk->sk_route_caps = dst->dev->features;
+	if (sk->sk_route_caps & NETIF_F_GSO)
+		sk->sk_route_caps |= NETIF_F_GSO_SOFTWARE;
+	if (sk_can_gso(sk)) {
+		if (dst->header_len) {
+			sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+		} else {
+			sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM;
+			sk->sk_gso_max_size = dst->dev->gso_max_size;
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(sk_setup_caps);
+
+void __init sk_init(void)
+{
+	if (num_physpages <= 4096) {
+		sysctl_wmem_max = 32767;
+		sysctl_rmem_max = 32767;
+		sysctl_wmem_default = 32767;
+		sysctl_rmem_default = 32767;
+	} else if (num_physpages >= 131072) {
+		sysctl_wmem_max = 131071;
+		sysctl_rmem_max = 131071;
+	}
+}
+
+/*
+ *	Simple resource managers for sockets.
+ */
+
+
+/*
+ * Write buffer destructor automatically called from kfree_skb.
+ */
+void sock_wfree(struct sk_buff *skb)
+{
+	struct sock *sk = skb->sk;
+
+	/* In case it might be waiting for more memory. */
+	atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
+	if (!sock_flag(sk, SOCK_USE_WRITE_QUEUE))
+		sk->sk_write_space(sk);
+	sock_put(sk);
+}
+
+/*
+ * Read buffer destructor automatically called from kfree_skb.
+ */
+void sock_rfree(struct sk_buff *skb)
+{
+	struct sock *sk = skb->sk;
+
+	atomic_sub(skb->truesize, &sk->sk_rmem_alloc);
+	sk_mem_uncharge(skb->sk, skb->truesize);
+}
+
+
+int sock_i_uid(struct sock *sk)
+{
+	int uid;
+
+	read_lock(&sk->sk_callback_lock);
+	uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : 0;
+	read_unlock(&sk->sk_callback_lock);
+	return uid;
+}
+
+unsigned long sock_i_ino(struct sock *sk)
+{
+	unsigned long ino;
+
+	read_lock(&sk->sk_callback_lock);
+	ino = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_ino : 0;
+	read_unlock(&sk->sk_callback_lock);
+	return ino;
+}
+
+/*
+ * Allocate a skb from the socket's send buffer.
+ */
+struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force,
+			     gfp_t priority)
+{
+	if (force || atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) {
+		struct sk_buff * skb = alloc_skb(size, priority);
+		if (skb) {
+			skb_set_owner_w(skb, sk);
+			return skb;
+		}
+	}
+	return NULL;
+}
+
+/*
+ * Allocate a skb from the socket's receive buffer.
+ */
+struct sk_buff *sock_rmalloc(struct sock *sk, unsigned long size, int force,
+			     gfp_t priority)
+{
+	if (force || atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf) {
+		struct sk_buff *skb = alloc_skb(size, priority);
+		if (skb) {
+			skb_set_owner_r(skb, sk);
+			return skb;
+		}
+	}
+	return NULL;
+}
+
+/*
+ * Allocate a memory block from the socket's option memory buffer.
+ */
+void *sock_kmalloc(struct sock *sk, int size, gfp_t priority)
+{
+	if ((unsigned)size <= sysctl_optmem_max &&
+	    atomic_read(&sk->sk_omem_alloc) + size < sysctl_optmem_max) {
+		void *mem;
+		/* First do the add, to avoid the race if kmalloc
+		 * might sleep.
+		 */
+		atomic_add(size, &sk->sk_omem_alloc);
+		mem = kmalloc(size, priority);
+		if (mem)
+			return mem;
+		atomic_sub(size, &sk->sk_omem_alloc);
+	}
+	return NULL;
+}
+
+/*
+ * Free an option memory block.
+ */
+void sock_kfree_s(struct sock *sk, void *mem, int size)
+{
+	kfree(mem);
+	atomic_sub(size, &sk->sk_omem_alloc);
+}
+
+/* It is almost wait_for_tcp_memory minus release_sock/lock_sock.
+   I think, these locks should be removed for datagram sockets.
+ */
+static long sock_wait_for_wmem(struct sock * sk, long timeo)
+{
+	DEFINE_WAIT(wait);
+
+	clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+	for (;;) {
+		if (!timeo)
+			break;
+		if (signal_pending(current))
+			break;
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		if (atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf)
+			break;
+		if (sk->sk_shutdown & SEND_SHUTDOWN)
+			break;
+		if (sk->sk_err)
+			break;
+		timeo = schedule_timeout(timeo);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	return timeo;
+}
+
+
+/*
+ *	Generic send/receive buffer handlers
+ */
+
+static struct sk_buff *sock_alloc_send_pskb(struct sock *sk,
+					    unsigned long header_len,
+					    unsigned long data_len,
+					    int noblock, int *errcode)
+{
+	struct sk_buff *skb;
+	gfp_t gfp_mask;
+	long timeo;
+	int err;
+
+	gfp_mask = sk->sk_allocation;
+	if (gfp_mask & __GFP_WAIT)
+		gfp_mask |= __GFP_REPEAT;
+
+	timeo = sock_sndtimeo(sk, noblock);
+	while (1) {
+		err = sock_error(sk);
+		if (err != 0)
+			goto failure;
+
+		err = -EPIPE;
+		if (sk->sk_shutdown & SEND_SHUTDOWN)
+			goto failure;
+
+		if (atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) {
+			skb = alloc_skb(header_len, gfp_mask);
+			if (skb) {
+				int npages;
+				int i;
+
+				/* No pages, we're done... */
+				if (!data_len)
+					break;
+
+				npages = (data_len + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+				skb->truesize += data_len;
+				skb_shinfo(skb)->nr_frags = npages;
+				for (i = 0; i < npages; i++) {
+					struct page *page;
+					skb_frag_t *frag;
+
+					page = alloc_pages(sk->sk_allocation, 0);
+					if (!page) {
+						err = -ENOBUFS;
+						skb_shinfo(skb)->nr_frags = i;
+						kfree_skb(skb);
+						goto failure;
+					}
+
+					frag = &skb_shinfo(skb)->frags[i];
+					frag->page = page;
+					frag->page_offset = 0;
+					frag->size = (data_len >= PAGE_SIZE ?
+						      PAGE_SIZE :
+						      data_len);
+					data_len -= PAGE_SIZE;
+				}
+
+				/* Full success... */
+				break;
+			}
+			err = -ENOBUFS;
+			goto failure;
+		}
+		set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+		err = -EAGAIN;
+		if (!timeo)
+			goto failure;
+		if (signal_pending(current))
+			goto interrupted;
+		timeo = sock_wait_for_wmem(sk, timeo);
+	}
+
+	skb_set_owner_w(skb, sk);
+	return skb;
+
+interrupted:
+	err = sock_intr_errno(timeo);
+failure:
+	*errcode = err;
+	return NULL;
+}
+
+struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size,
+				    int noblock, int *errcode)
+{
+	return sock_alloc_send_pskb(sk, size, 0, noblock, errcode);
+}
+
+static void __lock_sock(struct sock *sk)
+{
+	DEFINE_WAIT(wait);
+
+	for (;;) {
+		prepare_to_wait_exclusive(&sk->sk_lock.wq, &wait,
+					TASK_UNINTERRUPTIBLE);
+		spin_unlock_bh(&sk->sk_lock.slock);
+		schedule();
+		spin_lock_bh(&sk->sk_lock.slock);
+		if (!sock_owned_by_user(sk))
+			break;
+	}
+	finish_wait(&sk->sk_lock.wq, &wait);
+}
+
+static void __release_sock(struct sock *sk)
+{
+	struct sk_buff *skb = sk->sk_backlog.head;
+
+	do {
+		sk->sk_backlog.head = sk->sk_backlog.tail = NULL;
+		bh_unlock_sock(sk);
+
+		do {
+			struct sk_buff *next = skb->next;
+
+			skb->next = NULL;
+			sk_backlog_rcv(sk, skb);
+
+			/*
+			 * We are in process context here with softirqs
+			 * disabled, use cond_resched_softirq() to preempt.
+			 * This is safe to do because we've taken the backlog
+			 * queue private:
+			 */
+			cond_resched_softirq();
+
+			skb = next;
+		} while (skb != NULL);
+
+		bh_lock_sock(sk);
+	} while ((skb = sk->sk_backlog.head) != NULL);
+}
+
+/**
+ * sk_wait_data - wait for data to arrive at sk_receive_queue
+ * @sk:    sock to wait on
+ * @timeo: for how long
+ *
+ * Now socket state including sk->sk_err is changed only under lock,
+ * hence we may omit checks after joining wait queue.
+ * We check receive queue before schedule() only as optimization;
+ * it is very likely that release_sock() added new data.
+ */
+int sk_wait_data(struct sock *sk, long *timeo)
+{
+	int rc;
+	DEFINE_WAIT(wait);
+
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+	rc = sk_wait_event(sk, timeo, !skb_queue_empty(&sk->sk_receive_queue));
+	clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+	finish_wait(sk->sk_sleep, &wait);
+	return rc;
+}
+
+EXPORT_SYMBOL(sk_wait_data);
+
+/**
+ *	__sk_mem_schedule - increase sk_forward_alloc and memory_allocated
+ *	@sk: socket
+ *	@size: memory size to allocate
+ *	@kind: allocation type
+ *
+ *	If kind is SK_MEM_SEND, it means wmem allocation. Otherwise it means
+ *	rmem allocation. This function assumes that protocols which have
+ *	memory_pressure use sk_wmem_queued as write buffer accounting.
+ */
+int __sk_mem_schedule(struct sock *sk, int size, int kind)
+{
+	struct proto *prot = sk->sk_prot;
+	int amt = sk_mem_pages(size);
+	int allocated;
+
+	sk->sk_forward_alloc += amt * SK_MEM_QUANTUM;
+	allocated = atomic_add_return(amt, prot->memory_allocated);
+
+	/* Under limit. */
+	if (allocated <= prot->sysctl_mem[0]) {
+		if (prot->memory_pressure && *prot->memory_pressure)
+			*prot->memory_pressure = 0;
+		return 1;
+	}
+
+	/* Under pressure. */
+	if (allocated > prot->sysctl_mem[1])
+		if (prot->enter_memory_pressure)
+			prot->enter_memory_pressure(sk);
+
+	/* Over hard limit. */
+	if (allocated > prot->sysctl_mem[2])
+		goto suppress_allocation;
+
+	/* guarantee minimum buffer size under pressure */
+	if (kind == SK_MEM_RECV) {
+		if (atomic_read(&sk->sk_rmem_alloc) < prot->sysctl_rmem[0])
+			return 1;
+	} else { /* SK_MEM_SEND */
+		if (sk->sk_type == SOCK_STREAM) {
+			if (sk->sk_wmem_queued < prot->sysctl_wmem[0])
+				return 1;
+		} else if (atomic_read(&sk->sk_wmem_alloc) <
+			   prot->sysctl_wmem[0])
+				return 1;
+	}
+
+	if (prot->memory_pressure) {
+		int alloc;
+
+		if (!*prot->memory_pressure)
+			return 1;
+		alloc = percpu_counter_read_positive(prot->sockets_allocated);
+		if (prot->sysctl_mem[2] > alloc *
+		    sk_mem_pages(sk->sk_wmem_queued +
+				 atomic_read(&sk->sk_rmem_alloc) +
+				 sk->sk_forward_alloc))
+			return 1;
+	}
+
+suppress_allocation:
+
+	if (kind == SK_MEM_SEND && sk->sk_type == SOCK_STREAM) {
+		sk_stream_moderate_sndbuf(sk);
+
+		/* Fail only if socket is _under_ its sndbuf.
+		 * In this case we cannot block, so that we have to fail.
+		 */
+		if (sk->sk_wmem_queued + size >= sk->sk_sndbuf)
+			return 1;
+	}
+
+	/* Alas. Undo changes. */
+	sk->sk_forward_alloc -= amt * SK_MEM_QUANTUM;
+	atomic_sub(amt, prot->memory_allocated);
+	return 0;
+}
+
+EXPORT_SYMBOL(__sk_mem_schedule);
+
+/**
+ *	__sk_reclaim - reclaim memory_allocated
+ *	@sk: socket
+ */
+void __sk_mem_reclaim(struct sock *sk)
+{
+	struct proto *prot = sk->sk_prot;
+
+	atomic_sub(sk->sk_forward_alloc >> SK_MEM_QUANTUM_SHIFT,
+		   prot->memory_allocated);
+	sk->sk_forward_alloc &= SK_MEM_QUANTUM - 1;
+
+	if (prot->memory_pressure && *prot->memory_pressure &&
+	    (atomic_read(prot->memory_allocated) < prot->sysctl_mem[0]))
+		*prot->memory_pressure = 0;
+}
+
+EXPORT_SYMBOL(__sk_mem_reclaim);
+
+
+/*
+ * Set of default routines for initialising struct proto_ops when
+ * the protocol does not support a particular function. In certain
+ * cases where it makes no sense for a protocol to have a "do nothing"
+ * function, some default processing is provided.
+ */
+
+int sock_no_bind(struct socket *sock, struct sockaddr *saddr, int len)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_connect(struct socket *sock, struct sockaddr *saddr,
+		    int len, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_socketpair(struct socket *sock1, struct socket *sock2)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_getname(struct socket *sock, struct sockaddr *saddr,
+		    int *len, int peer)
+{
+	return -EOPNOTSUPP;
+}
+
+unsigned int sock_no_poll(struct file * file, struct socket *sock, poll_table *pt)
+{
+	return 0;
+}
+
+int sock_no_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_listen(struct socket *sock, int backlog)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_shutdown(struct socket *sock, int how)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_setsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_getsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int __user *optlen)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
+		    size_t len)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
+		    size_t len, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_mmap(struct file *file, struct socket *sock, struct vm_area_struct *vma)
+{
+	/* Mirror missing mmap method error code */
+	return -ENODEV;
+}
+
+ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags)
+{
+	ssize_t res;
+	struct msghdr msg = {.msg_flags = flags};
+	struct kvec iov;
+	char *kaddr = kmap(page);
+	iov.iov_base = kaddr + offset;
+	iov.iov_len = size;
+	res = kernel_sendmsg(sock, &msg, &iov, 1, size);
+	kunmap(page);
+	return res;
+}
+
+/*
+ *	Default Socket Callbacks
+ */
+
+static void sock_def_wakeup(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up_interruptible_all(sk->sk_sleep);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_error_report(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up_interruptible(sk->sk_sleep);
+	sk_wake_async(sk, SOCK_WAKE_IO, POLL_ERR);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_readable(struct sock *sk, int len)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up_interruptible_sync(sk->sk_sleep);
+	sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_write_space(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+
+	/* Do not wake up a writer until he can make "significant"
+	 * progress.  --DaveM
+	 */
+	if ((atomic_read(&sk->sk_wmem_alloc) << 1) <= sk->sk_sndbuf) {
+		if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+			wake_up_interruptible_sync(sk->sk_sleep);
+
+		/* Should agree with poll, otherwise some programs break */
+		if (sock_writeable(sk))
+			sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
+	}
+
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_destruct(struct sock *sk)
+{
+	kfree(sk->sk_protinfo);
+}
+
+void sk_send_sigurg(struct sock *sk)
+{
+	if (sk->sk_socket && sk->sk_socket->file)
+		if (send_sigurg(&sk->sk_socket->file->f_owner))
+			sk_wake_async(sk, SOCK_WAKE_URG, POLL_PRI);
+}
+
+void sk_reset_timer(struct sock *sk, struct timer_list* timer,
+		    unsigned long expires)
+{
+	if (!mod_timer(timer, expires))
+		sock_hold(sk);
+}
+
+EXPORT_SYMBOL(sk_reset_timer);
+
+void sk_stop_timer(struct sock *sk, struct timer_list* timer)
+{
+	if (timer_pending(timer) && del_timer(timer))
+		__sock_put(sk);
+}
+
+EXPORT_SYMBOL(sk_stop_timer);
+
+void sock_init_data(struct socket *sock, struct sock *sk)
+{
+	skb_queue_head_init(&sk->sk_receive_queue);
+	skb_queue_head_init(&sk->sk_write_queue);
+	skb_queue_head_init(&sk->sk_error_queue);
+#ifdef CONFIG_NET_DMA
+	skb_queue_head_init(&sk->sk_async_wait_queue);
+#endif
+
+	sk->sk_send_head	=	NULL;
+
+	init_timer(&sk->sk_timer);
+
+	sk->sk_allocation	=	GFP_KERNEL;
+	sk->sk_rcvbuf		=	sysctl_rmem_default;
+	sk->sk_sndbuf		=	sysctl_wmem_default;
+	sk->sk_state		=	TCP_CLOSE;
+	sk_set_socket(sk, sock);
+
+	sock_set_flag(sk, SOCK_ZAPPED);
+
+	if (sock) {
+		sk->sk_type	=	sock->type;
+		sk->sk_sleep	=	&sock->wait;
+		sock->sk	=	sk;
+	} else
+		sk->sk_sleep	=	NULL;
+
+	rwlock_init(&sk->sk_dst_lock);
+	rwlock_init(&sk->sk_callback_lock);
+	lockdep_set_class_and_name(&sk->sk_callback_lock,
+			af_callback_keys + sk->sk_family,
+			af_family_clock_key_strings[sk->sk_family]);
+
+	sk->sk_state_change	=	sock_def_wakeup;
+	sk->sk_data_ready	=	sock_def_readable;
+	sk->sk_write_space	=	sock_def_write_space;
+	sk->sk_error_report	=	sock_def_error_report;
+	sk->sk_destruct		=	sock_def_destruct;
+
+	sk->sk_sndmsg_page	=	NULL;
+	sk->sk_sndmsg_off	=	0;
+
+	sk->sk_peercred.pid 	=	0;
+	sk->sk_peercred.uid	=	-1;
+	sk->sk_peercred.gid	=	-1;
+	sk->sk_write_pending	=	0;
+	sk->sk_rcvlowat		=	1;
+	sk->sk_rcvtimeo		=	MAX_SCHEDULE_TIMEOUT;
+	sk->sk_sndtimeo		=	MAX_SCHEDULE_TIMEOUT;
+
+	sk->sk_stamp = ktime_set(-1L, 0);
+
+	atomic_set(&sk->sk_refcnt, 1);
+	atomic_set(&sk->sk_drops, 0);
+}
+
+void lock_sock_nested(struct sock *sk, int subclass)
+{
+	might_sleep();
+	spin_lock_bh(&sk->sk_lock.slock);
+	if (sk->sk_lock.owned)
+		__lock_sock(sk);
+	sk->sk_lock.owned = 1;
+	spin_unlock(&sk->sk_lock.slock);
+	/*
+	 * The sk_lock has mutex_lock() semantics here:
+	 */
+	mutex_acquire(&sk->sk_lock.dep_map, subclass, 0, _RET_IP_);
+	local_bh_enable();
+}
+
+EXPORT_SYMBOL(lock_sock_nested);
+
+void release_sock(struct sock *sk)
+{
+	/*
+	 * The sk_lock has mutex_unlock() semantics:
+	 */
+	mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
+
+	spin_lock_bh(&sk->sk_lock.slock);
+	if (sk->sk_backlog.tail)
+		__release_sock(sk);
+	sk->sk_lock.owned = 0;
+	if (waitqueue_active(&sk->sk_lock.wq))
+		wake_up(&sk->sk_lock.wq);
+	spin_unlock_bh(&sk->sk_lock.slock);
+}
+EXPORT_SYMBOL(release_sock);
+
+int sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
+{
+	struct timeval tv;
+	if (!sock_flag(sk, SOCK_TIMESTAMP))
+		sock_enable_timestamp(sk);
+	tv = ktime_to_timeval(sk->sk_stamp);
+	if (tv.tv_sec == -1)
+		return -ENOENT;
+	if (tv.tv_sec == 0) {
+		sk->sk_stamp = ktime_get_real();
+		tv = ktime_to_timeval(sk->sk_stamp);
+	}
+	return copy_to_user(userstamp, &tv, sizeof(tv)) ? -EFAULT : 0;
+}
+EXPORT_SYMBOL(sock_get_timestamp);
+
+int sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
+{
+	struct timespec ts;
+	if (!sock_flag(sk, SOCK_TIMESTAMP))
+		sock_enable_timestamp(sk);
+	ts = ktime_to_timespec(sk->sk_stamp);
+	if (ts.tv_sec == -1)
+		return -ENOENT;
+	if (ts.tv_sec == 0) {
+		sk->sk_stamp = ktime_get_real();
+		ts = ktime_to_timespec(sk->sk_stamp);
+	}
+	return copy_to_user(userstamp, &ts, sizeof(ts)) ? -EFAULT : 0;
+}
+EXPORT_SYMBOL(sock_get_timestampns);
+
+void sock_enable_timestamp(struct sock *sk)
+{
+	if (!sock_flag(sk, SOCK_TIMESTAMP)) {
+		sock_set_flag(sk, SOCK_TIMESTAMP);
+		net_enable_timestamp();
+	}
+}
+
+/*
+ *	Get a socket option on an socket.
+ *
+ *	FIX: POSIX 1003.1g is very ambiguous here. It states that
+ *	asynchronous errors should be reported by getsockopt. We assume
+ *	this means if you specify SO_ERROR (otherwise whats the point of it).
+ */
+int sock_common_getsockopt(struct socket *sock, int level, int optname,
+			   char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
+}
+
+EXPORT_SYMBOL(sock_common_getsockopt);
+
+#ifdef CONFIG_COMPAT
+int compat_sock_common_getsockopt(struct socket *sock, int level, int optname,
+				  char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk->sk_prot->compat_getsockopt != NULL)
+		return sk->sk_prot->compat_getsockopt(sk, level, optname,
+						      optval, optlen);
+	return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_getsockopt);
+#endif
+
+int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock,
+			struct msghdr *msg, size_t size, int flags)
+{
+	struct sock *sk = sock->sk;
+	int addr_len = 0;
+	int err;
+
+	err = sk->sk_prot->recvmsg(iocb, sk, msg, size, flags & MSG_DONTWAIT,
+				   flags & ~MSG_DONTWAIT, &addr_len);
+	if (err >= 0)
+		msg->msg_namelen = addr_len;
+	return err;
+}
+
+EXPORT_SYMBOL(sock_common_recvmsg);
+
+/*
+ *	Set socket options on an inet socket.
+ */
+int sock_common_setsockopt(struct socket *sock, int level, int optname,
+			   char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+
+	return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
+}
+
+EXPORT_SYMBOL(sock_common_setsockopt);
+
+#ifdef CONFIG_COMPAT
+int compat_sock_common_setsockopt(struct socket *sock, int level, int optname,
+				  char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk->sk_prot->compat_setsockopt != NULL)
+		return sk->sk_prot->compat_setsockopt(sk, level, optname,
+						      optval, optlen);
+	return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_setsockopt);
+#endif
+
+void sk_common_release(struct sock *sk)
+{
+	if (sk->sk_prot->destroy)
+		sk->sk_prot->destroy(sk);
+
+	/*
+	 * Observation: when sock_common_release is called, processes have
+	 * no access to socket. But net still has.
+	 * Step one, detach it from networking:
+	 *
+	 * A. Remove from hash tables.
+	 */
+
+	sk->sk_prot->unhash(sk);
+
+	/*
+	 * In this point socket cannot receive new packets, but it is possible
+	 * that some packets are in flight because some CPU runs receiver and
+	 * did hash table lookup before we unhashed socket. They will achieve
+	 * receive queue and will be purged by socket destructor.
+	 *
+	 * Also we still have packets pending on receive queue and probably,
+	 * our own packets waiting in device queues. sock_destroy will drain
+	 * receive queue, but transmitted packets will delay socket destruction
+	 * until the last reference will be released.
+	 */
+
+	sock_orphan(sk);
+
+	xfrm_sk_free_policy(sk);
+
+	sk_refcnt_debug_release(sk);
+	sock_put(sk);
+}
+
+EXPORT_SYMBOL(sk_common_release);
+
+static DEFINE_RWLOCK(proto_list_lock);
+static LIST_HEAD(proto_list);
+
+#ifdef CONFIG_PROC_FS
+#define PROTO_INUSE_NR	64	/* should be enough for the first time */
+struct prot_inuse {
+	int val[PROTO_INUSE_NR];
+};
+
+static DECLARE_BITMAP(proto_inuse_idx, PROTO_INUSE_NR);
+
+#ifdef CONFIG_NET_NS
+void sock_prot_inuse_add(struct net *net, struct proto *prot, int val)
+{
+	int cpu = smp_processor_id();
+	per_cpu_ptr(net->core.inuse, cpu)->val[prot->inuse_idx] += val;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_add);
+
+int sock_prot_inuse_get(struct net *net, struct proto *prot)
+{
+	int cpu, idx = prot->inuse_idx;
+	int res = 0;
+
+	for_each_possible_cpu(cpu)
+		res += per_cpu_ptr(net->core.inuse, cpu)->val[idx];
+
+	return res >= 0 ? res : 0;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_get);
+
+static int sock_inuse_init_net(struct net *net)
+{
+	net->core.inuse = alloc_percpu(struct prot_inuse);
+	return net->core.inuse ? 0 : -ENOMEM;
+}
+
+static void sock_inuse_exit_net(struct net *net)
+{
+	free_percpu(net->core.inuse);
+}
+
+static struct pernet_operations net_inuse_ops = {
+	.init = sock_inuse_init_net,
+	.exit = sock_inuse_exit_net,
+};
+
+static __init int net_inuse_init(void)
+{
+	if (register_pernet_subsys(&net_inuse_ops))
+		panic("Cannot initialize net inuse counters");
+
+	return 0;
+}
+
+core_initcall(net_inuse_init);
+#else
+static DEFINE_PER_CPU(struct prot_inuse, prot_inuse);
+
+void sock_prot_inuse_add(struct net *net, struct proto *prot, int val)
+{
+	__get_cpu_var(prot_inuse).val[prot->inuse_idx] += val;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_add);
+
+int sock_prot_inuse_get(struct net *net, struct proto *prot)
+{
+	int cpu, idx = prot->inuse_idx;
+	int res = 0;
+
+	for_each_possible_cpu(cpu)
+		res += per_cpu(prot_inuse, cpu).val[idx];
+
+	return res >= 0 ? res : 0;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_get);
+#endif
+
+static void assign_proto_idx(struct proto *prot)
+{
+	prot->inuse_idx = find_first_zero_bit(proto_inuse_idx, PROTO_INUSE_NR);
+
+	if (unlikely(prot->inuse_idx == PROTO_INUSE_NR - 1)) {
+		printk(KERN_ERR "PROTO_INUSE_NR exhausted\n");
+		return;
+	}
+
+	set_bit(prot->inuse_idx, proto_inuse_idx);
+}
+
+static void release_proto_idx(struct proto *prot)
+{
+	if (prot->inuse_idx != PROTO_INUSE_NR - 1)
+		clear_bit(prot->inuse_idx, proto_inuse_idx);
+}
+#else
+static inline void assign_proto_idx(struct proto *prot)
+{
+}
+
+static inline void release_proto_idx(struct proto *prot)
+{
+}
+#endif
+
+int proto_register(struct proto *prot, int alloc_slab)
+{
+	if (alloc_slab) {
+		prot->slab = kmem_cache_create(prot->name, prot->obj_size, 0,
+					SLAB_HWCACHE_ALIGN | prot->slab_flags,
+					NULL);
+
+		if (prot->slab == NULL) {
+			printk(KERN_CRIT "%s: Can't create sock SLAB cache!\n",
+			       prot->name);
+			goto out;
+		}
+
+		if (prot->rsk_prot != NULL) {
+			static const char mask[] = "request_sock_%s";
+
+			prot->rsk_prot->slab_name = kmalloc(strlen(prot->name) + sizeof(mask) - 1, GFP_KERNEL);
+			if (prot->rsk_prot->slab_name == NULL)
+				goto out_free_sock_slab;
+
+			sprintf(prot->rsk_prot->slab_name, mask, prot->name);
+			prot->rsk_prot->slab = kmem_cache_create(prot->rsk_prot->slab_name,
+								 prot->rsk_prot->obj_size, 0,
+								 SLAB_HWCACHE_ALIGN, NULL);
+
+			if (prot->rsk_prot->slab == NULL) {
+				printk(KERN_CRIT "%s: Can't create request sock SLAB cache!\n",
+				       prot->name);
+				goto out_free_request_sock_slab_name;
+			}
+		}
+
+		if (prot->twsk_prot != NULL) {
+			static const char mask[] = "tw_sock_%s";
+
+			prot->twsk_prot->twsk_slab_name = kmalloc(strlen(prot->name) + sizeof(mask) - 1, GFP_KERNEL);
+
+			if (prot->twsk_prot->twsk_slab_name == NULL)
+				goto out_free_request_sock_slab;
+
+			sprintf(prot->twsk_prot->twsk_slab_name, mask, prot->name);
+			prot->twsk_prot->twsk_slab =
+				kmem_cache_create(prot->twsk_prot->twsk_slab_name,
+						  prot->twsk_prot->twsk_obj_size,
+						  0,
+						  SLAB_HWCACHE_ALIGN |
+							prot->slab_flags,
+						  NULL);
+			if (prot->twsk_prot->twsk_slab == NULL)
+				goto out_free_timewait_sock_slab_name;
+		}
+	}
+
+	write_lock(&proto_list_lock);
+	list_add(&prot->node, &proto_list);
+	assign_proto_idx(prot);
+	write_unlock(&proto_list_lock);
+	return 0;
+
+out_free_timewait_sock_slab_name:
+	kfree(prot->twsk_prot->twsk_slab_name);
+out_free_request_sock_slab:
+	if (prot->rsk_prot && prot->rsk_prot->slab) {
+		kmem_cache_destroy(prot->rsk_prot->slab);
+		prot->rsk_prot->slab = NULL;
+	}
+out_free_request_sock_slab_name:
+	kfree(prot->rsk_prot->slab_name);
+out_free_sock_slab:
+	kmem_cache_destroy(prot->slab);
+	prot->slab = NULL;
+out:
+	return -ENOBUFS;
+}
+
+EXPORT_SYMBOL(proto_register);
+
+void proto_unregister(struct proto *prot)
+{
+	write_lock(&proto_list_lock);
+	release_proto_idx(prot);
+	list_del(&prot->node);
+	write_unlock(&proto_list_lock);
+
+	if (prot->slab != NULL) {
+		kmem_cache_destroy(prot->slab);
+		prot->slab = NULL;
+	}
+
+	if (prot->rsk_prot != NULL && prot->rsk_prot->slab != NULL) {
+		kmem_cache_destroy(prot->rsk_prot->slab);
+		kfree(prot->rsk_prot->slab_name);
+		prot->rsk_prot->slab = NULL;
+	}
+
+	if (prot->twsk_prot != NULL && prot->twsk_prot->twsk_slab != NULL) {
+		kmem_cache_destroy(prot->twsk_prot->twsk_slab);
+		kfree(prot->twsk_prot->twsk_slab_name);
+		prot->twsk_prot->twsk_slab = NULL;
+	}
+}
+
+EXPORT_SYMBOL(proto_unregister);
+
+#ifdef CONFIG_PROC_FS
+static void *proto_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(proto_list_lock)
+{
+	read_lock(&proto_list_lock);
+	return seq_list_start_head(&proto_list, *pos);
+}
+
+static void *proto_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	return seq_list_next(v, &proto_list, pos);
+}
+
+static void proto_seq_stop(struct seq_file *seq, void *v)
+	__releases(proto_list_lock)
+{
+	read_unlock(&proto_list_lock);
+}
+
+static char proto_method_implemented(const void *method)
+{
+	return method == NULL ? 'n' : 'y';
+}
+
+static void proto_seq_printf(struct seq_file *seq, struct proto *proto)
+{
+	seq_printf(seq, "%-9s %4u %6d  %6d   %-3s %6u   %-3s  %-10s "
+			"%2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c\n",
+		   proto->name,
+		   proto->obj_size,
+		   sock_prot_inuse_get(seq_file_net(seq), proto),
+		   proto->memory_allocated != NULL ? atomic_read(proto->memory_allocated) : -1,
+		   proto->memory_pressure != NULL ? *proto->memory_pressure ? "yes" : "no" : "NI",
+		   proto->max_header,
+		   proto->slab == NULL ? "no" : "yes",
+		   module_name(proto->owner),
+		   proto_method_implemented(proto->close),
+		   proto_method_implemented(proto->connect),
+		   proto_method_implemented(proto->disconnect),
+		   proto_method_implemented(proto->accept),
+		   proto_method_implemented(proto->ioctl),
+		   proto_method_implemented(proto->init),
+		   proto_method_implemented(proto->destroy),
+		   proto_method_implemented(proto->shutdown),
+		   proto_method_implemented(proto->setsockopt),
+		   proto_method_implemented(proto->getsockopt),
+		   proto_method_implemented(proto->sendmsg),
+		   proto_method_implemented(proto->recvmsg),
+		   proto_method_implemented(proto->sendpage),
+		   proto_method_implemented(proto->bind),
+		   proto_method_implemented(proto->backlog_rcv),
+		   proto_method_implemented(proto->hash),
+		   proto_method_implemented(proto->unhash),
+		   proto_method_implemented(proto->get_port),
+		   proto_method_implemented(proto->enter_memory_pressure));
+}
+
+static int proto_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == &proto_list)
+		seq_printf(seq, "%-9s %-4s %-8s %-6s %-5s %-7s %-4s %-10s %s",
+			   "protocol",
+			   "size",
+			   "sockets",
+			   "memory",
+			   "press",
+			   "maxhdr",
+			   "slab",
+			   "module",
+			   "cl co di ac io in de sh ss gs se re sp bi br ha uh gp em\n");
+	else
+		proto_seq_printf(seq, list_entry(v, struct proto, node));
+	return 0;
+}
+
+static const struct seq_operations proto_seq_ops = {
+	.start  = proto_seq_start,
+	.next   = proto_seq_next,
+	.stop   = proto_seq_stop,
+	.show   = proto_seq_show,
+};
+
+static int proto_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &proto_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations proto_seq_fops = {
+	.owner		= THIS_MODULE,
+	.open		= proto_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release_net,
+};
+
+static __net_init int proto_init_net(struct net *net)
+{
+	if (!proc_net_fops_create(net, "protocols", S_IRUGO, &proto_seq_fops))
+		return -ENOMEM;
+
+	return 0;
+}
+
+static __net_exit void proto_exit_net(struct net *net)
+{
+	proc_net_remove(net, "protocols");
+}
+
+
+static __net_initdata struct pernet_operations proto_net_ops = {
+	.init = proto_init_net,
+	.exit = proto_exit_net,
+};
+
+static int __init proto_init(void)
+{
+	return register_pernet_subsys(&proto_net_ops);
+}
+
+subsys_initcall(proto_init);
+
+#endif /* PROC_FS */
+
+EXPORT_SYMBOL(sk_alloc);
+EXPORT_SYMBOL(sk_free);
+EXPORT_SYMBOL(sk_send_sigurg);
+EXPORT_SYMBOL(sock_alloc_send_skb);
+EXPORT_SYMBOL(sock_init_data);
+EXPORT_SYMBOL(sock_kfree_s);
+EXPORT_SYMBOL(sock_kmalloc);
+EXPORT_SYMBOL(sock_no_accept);
+EXPORT_SYMBOL(sock_no_bind);
+EXPORT_SYMBOL(sock_no_connect);
+EXPORT_SYMBOL(sock_no_getname);
+EXPORT_SYMBOL(sock_no_getsockopt);
+EXPORT_SYMBOL(sock_no_ioctl);
+EXPORT_SYMBOL(sock_no_listen);
+EXPORT_SYMBOL(sock_no_mmap);
+EXPORT_SYMBOL(sock_no_poll);
+EXPORT_SYMBOL(sock_no_recvmsg);
+EXPORT_SYMBOL(sock_no_sendmsg);
+EXPORT_SYMBOL(sock_no_sendpage);
+EXPORT_SYMBOL(sock_no_setsockopt);
+EXPORT_SYMBOL(sock_no_shutdown);
+EXPORT_SYMBOL(sock_no_socketpair);
+EXPORT_SYMBOL(sock_rfree);
+EXPORT_SYMBOL(sock_setsockopt);
+EXPORT_SYMBOL(sock_wfree);
+EXPORT_SYMBOL(sock_wmalloc);
+EXPORT_SYMBOL(sock_i_uid);
+EXPORT_SYMBOL(sock_i_ino);
+EXPORT_SYMBOL(sysctl_optmem_max);
diff --git a/libdde_linux26/contrib/net/core/dev.c b/libdde_linux26/contrib/net/core/dev.c
new file mode 100644
index 00000000..e3fe5c70
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/dev.c
@@ -0,0 +1,5277 @@
+/*
+ * 	NET3	Protocol independent device support routines.
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *	Derived from the non IP parts of dev.c 1.0.19
+ * 		Authors:	Ross Biro
+ *				Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *				Mark Evans, <evansmp@uhura.aston.ac.uk>
+ *
+ *	Additional Authors:
+ *		Florian la Roche <rzsfl@rz.uni-sb.de>
+ *		Alan Cox <gw4pts@gw4pts.ampr.org>
+ *		David Hinds <dahinds@users.sourceforge.net>
+ *		Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
+ *		Adam Sulmicki <adam@cfar.umd.edu>
+ *              Pekka Riikonen <priikone@poesidon.pspt.fi>
+ *
+ *	Changes:
+ *              D.J. Barrow     :       Fixed bug where dev->refcnt gets set
+ *              			to 2 if register_netdev gets called
+ *              			before net_dev_init & also removed a
+ *              			few lines of code in the process.
+ *		Alan Cox	:	device private ioctl copies fields back.
+ *		Alan Cox	:	Transmit queue code does relevant
+ *					stunts to keep the queue safe.
+ *		Alan Cox	:	Fixed double lock.
+ *		Alan Cox	:	Fixed promisc NULL pointer trap
+ *		????????	:	Support the full private ioctl range
+ *		Alan Cox	:	Moved ioctl permission check into
+ *					drivers
+ *		Tim Kordas	:	SIOCADDMULTI/SIOCDELMULTI
+ *		Alan Cox	:	100 backlog just doesn't cut it when
+ *					you start doing multicast video 8)
+ *		Alan Cox	:	Rewrote net_bh and list manager.
+ *		Alan Cox	: 	Fix ETH_P_ALL echoback lengths.
+ *		Alan Cox	:	Took out transmit every packet pass
+ *					Saved a few bytes in the ioctl handler
+ *		Alan Cox	:	Network driver sets packet type before
+ *					calling netif_rx. Saves a function
+ *					call a packet.
+ *		Alan Cox	:	Hashed net_bh()
+ *		Richard Kooijman:	Timestamp fixes.
+ *		Alan Cox	:	Wrong field in SIOCGIFDSTADDR
+ *		Alan Cox	:	Device lock protection.
+ *		Alan Cox	: 	Fixed nasty side effect of device close
+ *					changes.
+ *		Rudi Cilibrasi	:	Pass the right thing to
+ *					set_mac_address()
+ *		Dave Miller	:	32bit quantity for the device lock to
+ *					make it work out on a Sparc.
+ *		Bjorn Ekwall	:	Added KERNELD hack.
+ *		Alan Cox	:	Cleaned up the backlog initialise.
+ *		Craig Metz	:	SIOCGIFCONF fix if space for under
+ *					1 device.
+ *	    Thomas Bogendoerfer :	Return ENODEV for dev_open, if there
+ *					is no device open function.
+ *		Andi Kleen	:	Fix error reporting for SIOCGIFCONF
+ *	    Michael Chastain	:	Fix signed/unsigned for SIOCGIFCONF
+ *		Cyrus Durgin	:	Cleaned for KMOD
+ *		Adam Sulmicki   :	Bug Fix : Network Device Unload
+ *					A network device unload needs to purge
+ *					the backlog queue.
+ *	Paul Rusty Russell	:	SIOCSIFNAME
+ *              Pekka Riikonen  :	Netdev boot-time settings code
+ *              Andrew Morton   :       Make unregister_netdevice wait
+ *              			indefinitely on dev->refcnt
+ * 		J Hadi Salim	:	- Backlog queue sampling
+ *				        - netif_rx() feedback
+ */
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <linux/bitops.h>
+#include <linux/capability.h>
+#include <linux/cpu.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mutex.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/notifier.h>
+#include <linux/skbuff.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <linux/rtnetlink.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/if_bridge.h>
+#include <linux/if_macvlan.h>
+#include <net/dst.h>
+#include <net/pkt_sched.h>
+#include <net/checksum.h>
+#include <linux/highmem.h>
+#include <linux/init.h>
+#include <linux/kmod.h>
+#include <linux/module.h>
+#include <linux/netpoll.h>
+#include <linux/rcupdate.h>
+#include <linux/delay.h>
+#include <net/wext.h>
+#include <net/iw_handler.h>
+#include <asm/current.h>
+#include <linux/audit.h>
+#include <linux/dmaengine.h>
+#include <linux/err.h>
+#include <linux/ctype.h>
+#include <linux/if_arp.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <net/ip.h>
+#include <linux/ipv6.h>
+#include <linux/in.h>
+#include <linux/jhash.h>
+#include <linux/random.h>
+
+#include "net-sysfs.h"
+
+/* Instead of increasing this, you should create a hash table. */
+#define MAX_GRO_SKBS 8
+
+/* This should be increased if a protocol with a bigger head is added. */
+#define GRO_MAX_HEAD (MAX_HEADER + 128)
+
+/*
+ *	The list of packet types we will receive (as opposed to discard)
+ *	and the routines to invoke.
+ *
+ *	Why 16. Because with 16 the only overlap we get on a hash of the
+ *	low nibble of the protocol value is RARP/SNAP/X.25.
+ *
+ *      NOTE:  That is no longer true with the addition of VLAN tags.  Not
+ *             sure which should go first, but I bet it won't make much
+ *             difference if we are running VLANs.  The good news is that
+ *             this protocol won't be in the list unless compiled in, so
+ *             the average user (w/out VLANs) will not be adversely affected.
+ *             --BLG
+ *
+ *		0800	IP
+ *		8100    802.1Q VLAN
+ *		0001	802.3
+ *		0002	AX.25
+ *		0004	802.2
+ *		8035	RARP
+ *		0005	SNAP
+ *		0805	X.25
+ *		0806	ARP
+ *		8137	IPX
+ *		0009	Localtalk
+ *		86DD	IPv6
+ */
+
+#define PTYPE_HASH_SIZE	(16)
+#define PTYPE_HASH_MASK	(PTYPE_HASH_SIZE - 1)
+
+static DEFINE_SPINLOCK(ptype_lock);
+static struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
+static struct list_head ptype_all __read_mostly;	/* Taps */
+
+/*
+ * The @dev_base_head list is protected by @dev_base_lock and the rtnl
+ * semaphore.
+ *
+ * Pure readers hold dev_base_lock for reading.
+ *
+ * Writers must hold the rtnl semaphore while they loop through the
+ * dev_base_head list, and hold dev_base_lock for writing when they do the
+ * actual updates.  This allows pure readers to access the list even
+ * while a writer is preparing to update it.
+ *
+ * To put it another way, dev_base_lock is held for writing only to
+ * protect against pure readers; the rtnl semaphore provides the
+ * protection against other writers.
+ *
+ * See, for example usages, register_netdevice() and
+ * unregister_netdevice(), which must be called with the rtnl
+ * semaphore held.
+ */
+DEFINE_RWLOCK(dev_base_lock);
+
+EXPORT_SYMBOL(dev_base_lock);
+
+#define NETDEV_HASHBITS	8
+#define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS)
+
+static inline struct hlist_head *dev_name_hash(struct net *net, const char *name)
+{
+	unsigned hash = full_name_hash(name, strnlen(name, IFNAMSIZ));
+	return &net->dev_name_head[hash & ((1 << NETDEV_HASHBITS) - 1)];
+}
+
+static inline struct hlist_head *dev_index_hash(struct net *net, int ifindex)
+{
+	return &net->dev_index_head[ifindex & ((1 << NETDEV_HASHBITS) - 1)];
+}
+
+/* Device list insertion */
+static int list_netdevice(struct net_device *dev)
+{
+	struct net *net = dev_net(dev);
+
+	ASSERT_RTNL();
+
+	write_lock_bh(&dev_base_lock);
+	list_add_tail(&dev->dev_list, &net->dev_base_head);
+	hlist_add_head(&dev->name_hlist, dev_name_hash(net, dev->name));
+	hlist_add_head(&dev->index_hlist, dev_index_hash(net, dev->ifindex));
+	write_unlock_bh(&dev_base_lock);
+	return 0;
+}
+
+/* Device list removal */
+static void unlist_netdevice(struct net_device *dev)
+{
+	ASSERT_RTNL();
+
+	/* Unlink dev from the device chain */
+	write_lock_bh(&dev_base_lock);
+	list_del(&dev->dev_list);
+	hlist_del(&dev->name_hlist);
+	hlist_del(&dev->index_hlist);
+	write_unlock_bh(&dev_base_lock);
+}
+
+/*
+ *	Our notifier list
+ */
+
+static RAW_NOTIFIER_HEAD(netdev_chain);
+
+/*
+ *	Device drivers call our routines to queue packets here. We empty the
+ *	queue in the local softnet handler.
+ */
+
+DEFINE_PER_CPU(struct softnet_data, softnet_data);
+
+#ifdef CONFIG_LOCKDEP
+/*
+ * register_netdevice() inits txq->_xmit_lock and sets lockdep class
+ * according to dev->type
+ */
+static const unsigned short netdev_lock_type[] =
+	{ARPHRD_NETROM, ARPHRD_ETHER, ARPHRD_EETHER, ARPHRD_AX25,
+	 ARPHRD_PRONET, ARPHRD_CHAOS, ARPHRD_IEEE802, ARPHRD_ARCNET,
+	 ARPHRD_APPLETLK, ARPHRD_DLCI, ARPHRD_ATM, ARPHRD_METRICOM,
+	 ARPHRD_IEEE1394, ARPHRD_EUI64, ARPHRD_INFINIBAND, ARPHRD_SLIP,
+	 ARPHRD_CSLIP, ARPHRD_SLIP6, ARPHRD_CSLIP6, ARPHRD_RSRVD,
+	 ARPHRD_ADAPT, ARPHRD_ROSE, ARPHRD_X25, ARPHRD_HWX25,
+	 ARPHRD_PPP, ARPHRD_CISCO, ARPHRD_LAPB, ARPHRD_DDCMP,
+	 ARPHRD_RAWHDLC, ARPHRD_TUNNEL, ARPHRD_TUNNEL6, ARPHRD_FRAD,
+	 ARPHRD_SKIP, ARPHRD_LOOPBACK, ARPHRD_LOCALTLK, ARPHRD_FDDI,
+	 ARPHRD_BIF, ARPHRD_SIT, ARPHRD_IPDDP, ARPHRD_IPGRE,
+	 ARPHRD_PIMREG, ARPHRD_HIPPI, ARPHRD_ASH, ARPHRD_ECONET,
+	 ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
+	 ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211,
+	 ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET,
+	 ARPHRD_PHONET_PIPE, ARPHRD_VOID, ARPHRD_NONE};
+
+static const char *netdev_lock_name[] =
+	{"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25",
+	 "_xmit_PRONET", "_xmit_CHAOS", "_xmit_IEEE802", "_xmit_ARCNET",
+	 "_xmit_APPLETLK", "_xmit_DLCI", "_xmit_ATM", "_xmit_METRICOM",
+	 "_xmit_IEEE1394", "_xmit_EUI64", "_xmit_INFINIBAND", "_xmit_SLIP",
+	 "_xmit_CSLIP", "_xmit_SLIP6", "_xmit_CSLIP6", "_xmit_RSRVD",
+	 "_xmit_ADAPT", "_xmit_ROSE", "_xmit_X25", "_xmit_HWX25",
+	 "_xmit_PPP", "_xmit_CISCO", "_xmit_LAPB", "_xmit_DDCMP",
+	 "_xmit_RAWHDLC", "_xmit_TUNNEL", "_xmit_TUNNEL6", "_xmit_FRAD",
+	 "_xmit_SKIP", "_xmit_LOOPBACK", "_xmit_LOCALTLK", "_xmit_FDDI",
+	 "_xmit_BIF", "_xmit_SIT", "_xmit_IPDDP", "_xmit_IPGRE",
+	 "_xmit_PIMREG", "_xmit_HIPPI", "_xmit_ASH", "_xmit_ECONET",
+	 "_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
+	 "_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211",
+	 "_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET",
+	 "_xmit_PHONET_PIPE", "_xmit_VOID", "_xmit_NONE"};
+
+static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
+static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)];
+
+static inline unsigned short netdev_lock_pos(unsigned short dev_type)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(netdev_lock_type); i++)
+		if (netdev_lock_type[i] == dev_type)
+			return i;
+	/* the last key is used by default */
+	return ARRAY_SIZE(netdev_lock_type) - 1;
+}
+
+static inline void netdev_set_xmit_lockdep_class(spinlock_t *lock,
+						 unsigned short dev_type)
+{
+	int i;
+
+	i = netdev_lock_pos(dev_type);
+	lockdep_set_class_and_name(lock, &netdev_xmit_lock_key[i],
+				   netdev_lock_name[i]);
+}
+
+static inline void netdev_set_addr_lockdep_class(struct net_device *dev)
+{
+	int i;
+
+	i = netdev_lock_pos(dev->type);
+	lockdep_set_class_and_name(&dev->addr_list_lock,
+				   &netdev_addr_lock_key[i],
+				   netdev_lock_name[i]);
+}
+#else
+static inline void netdev_set_xmit_lockdep_class(spinlock_t *lock,
+						 unsigned short dev_type)
+{
+}
+static inline void netdev_set_addr_lockdep_class(struct net_device *dev)
+{
+}
+#endif
+
+/*******************************************************************************
+
+		Protocol management and registration routines
+
+*******************************************************************************/
+
+/*
+ *	Add a protocol ID to the list. Now that the input handler is
+ *	smarter we can dispense with all the messy stuff that used to be
+ *	here.
+ *
+ *	BEWARE!!! Protocol handlers, mangling input packets,
+ *	MUST BE last in hash buckets and checking protocol handlers
+ *	MUST start from promiscuous ptype_all chain in net_bh.
+ *	It is true now, do not change it.
+ *	Explanation follows: if protocol handler, mangling packet, will
+ *	be the first on list, it is not able to sense, that packet
+ *	is cloned and should be copied-on-write, so that it will
+ *	change it and subsequent readers will get broken packet.
+ *							--ANK (980803)
+ */
+
+/**
+ *	dev_add_pack - add packet handler
+ *	@pt: packet type declaration
+ *
+ *	Add a protocol handler to the networking stack. The passed &packet_type
+ *	is linked into kernel lists and may not be freed until it has been
+ *	removed from the kernel lists.
+ *
+ *	This call does not sleep therefore it can not
+ *	guarantee all CPU's that are in middle of receiving packets
+ *	will see the new packet type (until the next received packet).
+ */
+
+void dev_add_pack(struct packet_type *pt)
+{
+	int hash;
+
+	spin_lock_bh(&ptype_lock);
+	if (pt->type == htons(ETH_P_ALL))
+		list_add_rcu(&pt->list, &ptype_all);
+	else {
+		hash = ntohs(pt->type) & PTYPE_HASH_MASK;
+		list_add_rcu(&pt->list, &ptype_base[hash]);
+	}
+	spin_unlock_bh(&ptype_lock);
+}
+
+/**
+ *	__dev_remove_pack	 - remove packet handler
+ *	@pt: packet type declaration
+ *
+ *	Remove a protocol handler that was previously added to the kernel
+ *	protocol handlers by dev_add_pack(). The passed &packet_type is removed
+ *	from the kernel lists and can be freed or reused once this function
+ *	returns.
+ *
+ *      The packet type might still be in use by receivers
+ *	and must not be freed until after all the CPU's have gone
+ *	through a quiescent state.
+ */
+void __dev_remove_pack(struct packet_type *pt)
+{
+	struct list_head *head;
+	struct packet_type *pt1;
+
+	spin_lock_bh(&ptype_lock);
+
+	if (pt->type == htons(ETH_P_ALL))
+		head = &ptype_all;
+	else
+		head = &ptype_base[ntohs(pt->type) & PTYPE_HASH_MASK];
+
+	list_for_each_entry(pt1, head, list) {
+		if (pt == pt1) {
+			list_del_rcu(&pt->list);
+			goto out;
+		}
+	}
+
+	printk(KERN_WARNING "dev_remove_pack: %p not found.\n", pt);
+out:
+	spin_unlock_bh(&ptype_lock);
+}
+/**
+ *	dev_remove_pack	 - remove packet handler
+ *	@pt: packet type declaration
+ *
+ *	Remove a protocol handler that was previously added to the kernel
+ *	protocol handlers by dev_add_pack(). The passed &packet_type is removed
+ *	from the kernel lists and can be freed or reused once this function
+ *	returns.
+ *
+ *	This call sleeps to guarantee that no CPU is looking at the packet
+ *	type after return.
+ */
+void dev_remove_pack(struct packet_type *pt)
+{
+	__dev_remove_pack(pt);
+
+	synchronize_net();
+}
+
+/******************************************************************************
+
+		      Device Boot-time Settings Routines
+
+*******************************************************************************/
+
+/* Boot time configuration table */
+static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
+
+/**
+ *	netdev_boot_setup_add	- add new setup entry
+ *	@name: name of the device
+ *	@map: configured settings for the device
+ *
+ *	Adds new setup entry to the dev_boot_setup list.  The function
+ *	returns 0 on error and 1 on success.  This is a generic routine to
+ *	all netdevices.
+ */
+static int netdev_boot_setup_add(char *name, struct ifmap *map)
+{
+	struct netdev_boot_setup *s;
+	int i;
+
+	s = dev_boot_setup;
+	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
+		if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
+			memset(s[i].name, 0, sizeof(s[i].name));
+			strlcpy(s[i].name, name, IFNAMSIZ);
+			memcpy(&s[i].map, map, sizeof(s[i].map));
+			break;
+		}
+	}
+
+	return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
+}
+
+/**
+ *	netdev_boot_setup_check	- check boot time settings
+ *	@dev: the netdevice
+ *
+ * 	Check boot time settings for the device.
+ *	The found settings are set for the device to be used
+ *	later in the device probing.
+ *	Returns 0 if no settings found, 1 if they are.
+ */
+int netdev_boot_setup_check(struct net_device *dev)
+{
+	struct netdev_boot_setup *s = dev_boot_setup;
+	int i;
+
+	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
+		if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
+		    !strcmp(dev->name, s[i].name)) {
+			dev->irq 	= s[i].map.irq;
+			dev->base_addr 	= s[i].map.base_addr;
+			dev->mem_start 	= s[i].map.mem_start;
+			dev->mem_end 	= s[i].map.mem_end;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+
+/**
+ *	netdev_boot_base	- get address from boot time settings
+ *	@prefix: prefix for network device
+ *	@unit: id for network device
+ *
+ * 	Check boot time settings for the base address of device.
+ *	The found settings are set for the device to be used
+ *	later in the device probing.
+ *	Returns 0 if no settings found.
+ */
+unsigned long netdev_boot_base(const char *prefix, int unit)
+{
+	const struct netdev_boot_setup *s = dev_boot_setup;
+	char name[IFNAMSIZ];
+	int i;
+
+	sprintf(name, "%s%d", prefix, unit);
+
+	/*
+	 * If device already registered then return base of 1
+	 * to indicate not to probe for this interface
+	 */
+	if (__dev_get_by_name(&init_net, name))
+		return 1;
+
+	for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++)
+		if (!strcmp(name, s[i].name))
+			return s[i].map.base_addr;
+	return 0;
+}
+
+/*
+ * Saves at boot time configured settings for any netdevice.
+ */
+int __init netdev_boot_setup(char *str)
+{
+	int ints[5];
+	struct ifmap map;
+
+	str = get_options(str, ARRAY_SIZE(ints), ints);
+	if (!str || !*str)
+		return 0;
+
+	/* Save settings */
+	memset(&map, 0, sizeof(map));
+	if (ints[0] > 0)
+		map.irq = ints[1];
+	if (ints[0] > 1)
+		map.base_addr = ints[2];
+	if (ints[0] > 2)
+		map.mem_start = ints[3];
+	if (ints[0] > 3)
+		map.mem_end = ints[4];
+
+	/* Add new entry to the list */
+	return netdev_boot_setup_add(str, &map);
+}
+
+__setup("netdev=", netdev_boot_setup);
+
+/*******************************************************************************
+
+			    Device Interface Subroutines
+
+*******************************************************************************/
+
+/**
+ *	__dev_get_by_name	- find a device by its name
+ *	@net: the applicable net namespace
+ *	@name: name to find
+ *
+ *	Find an interface by name. Must be called under RTNL semaphore
+ *	or @dev_base_lock. If the name is found a pointer to the device
+ *	is returned. If the name is not found then %NULL is returned. The
+ *	reference counters are not incremented so the caller must be
+ *	careful with locks.
+ */
+
+struct net_device *__dev_get_by_name(struct net *net, const char *name)
+{
+	struct hlist_node *p;
+
+	hlist_for_each(p, dev_name_hash(net, name)) {
+		struct net_device *dev
+			= hlist_entry(p, struct net_device, name_hlist);
+		if (!strncmp(dev->name, name, IFNAMSIZ))
+			return dev;
+	}
+	return NULL;
+}
+
+/**
+ *	dev_get_by_name		- find a device by its name
+ *	@net: the applicable net namespace
+ *	@name: name to find
+ *
+ *	Find an interface by name. This can be called from any
+ *	context and does its own locking. The returned handle has
+ *	the usage count incremented and the caller must use dev_put() to
+ *	release it when it is no longer needed. %NULL is returned if no
+ *	matching device is found.
+ */
+
+struct net_device *dev_get_by_name(struct net *net, const char *name)
+{
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_name(net, name);
+	if (dev)
+		dev_hold(dev);
+	read_unlock(&dev_base_lock);
+	return dev;
+}
+
+/**
+ *	__dev_get_by_index - find a device by its ifindex
+ *	@net: the applicable net namespace
+ *	@ifindex: index of device
+ *
+ *	Search for an interface by index. Returns %NULL if the device
+ *	is not found or a pointer to the device. The device has not
+ *	had its reference counter increased so the caller must be careful
+ *	about locking. The caller must hold either the RTNL semaphore
+ *	or @dev_base_lock.
+ */
+
+struct net_device *__dev_get_by_index(struct net *net, int ifindex)
+{
+	struct hlist_node *p;
+
+	hlist_for_each(p, dev_index_hash(net, ifindex)) {
+		struct net_device *dev
+			= hlist_entry(p, struct net_device, index_hlist);
+		if (dev->ifindex == ifindex)
+			return dev;
+	}
+	return NULL;
+}
+
+
+/**
+ *	dev_get_by_index - find a device by its ifindex
+ *	@net: the applicable net namespace
+ *	@ifindex: index of device
+ *
+ *	Search for an interface by index. Returns NULL if the device
+ *	is not found or a pointer to the device. The device returned has
+ *	had a reference added and the pointer is safe until the user calls
+ *	dev_put to indicate they have finished with it.
+ */
+
+struct net_device *dev_get_by_index(struct net *net, int ifindex)
+{
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_index(net, ifindex);
+	if (dev)
+		dev_hold(dev);
+	read_unlock(&dev_base_lock);
+	return dev;
+}
+
+/**
+ *	dev_getbyhwaddr - find a device by its hardware address
+ *	@net: the applicable net namespace
+ *	@type: media type of device
+ *	@ha: hardware address
+ *
+ *	Search for an interface by MAC address. Returns NULL if the device
+ *	is not found or a pointer to the device. The caller must hold the
+ *	rtnl semaphore. The returned device has not had its ref count increased
+ *	and the caller must therefore be careful about locking
+ *
+ *	BUGS:
+ *	If the API was consistent this would be __dev_get_by_hwaddr
+ */
+
+struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *ha)
+{
+	struct net_device *dev;
+
+	ASSERT_RTNL();
+
+	for_each_netdev(net, dev)
+		if (dev->type == type &&
+		    !memcmp(dev->dev_addr, ha, dev->addr_len))
+			return dev;
+
+	return NULL;
+}
+
+EXPORT_SYMBOL(dev_getbyhwaddr);
+
+struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type)
+{
+	struct net_device *dev;
+
+	ASSERT_RTNL();
+	for_each_netdev(net, dev)
+		if (dev->type == type)
+			return dev;
+
+	return NULL;
+}
+
+EXPORT_SYMBOL(__dev_getfirstbyhwtype);
+
+struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type)
+{
+	struct net_device *dev;
+
+	rtnl_lock();
+	dev = __dev_getfirstbyhwtype(net, type);
+	if (dev)
+		dev_hold(dev);
+	rtnl_unlock();
+	return dev;
+}
+
+EXPORT_SYMBOL(dev_getfirstbyhwtype);
+
+/**
+ *	dev_get_by_flags - find any device with given flags
+ *	@net: the applicable net namespace
+ *	@if_flags: IFF_* values
+ *	@mask: bitmask of bits in if_flags to check
+ *
+ *	Search for any interface with the given flags. Returns NULL if a device
+ *	is not found or a pointer to the device. The device returned has
+ *	had a reference added and the pointer is safe until the user calls
+ *	dev_put to indicate they have finished with it.
+ */
+
+struct net_device * dev_get_by_flags(struct net *net, unsigned short if_flags, unsigned short mask)
+{
+	struct net_device *dev, *ret;
+
+	ret = NULL;
+	read_lock(&dev_base_lock);
+	for_each_netdev(net, dev) {
+		if (((dev->flags ^ if_flags) & mask) == 0) {
+			dev_hold(dev);
+			ret = dev;
+			break;
+		}
+	}
+	read_unlock(&dev_base_lock);
+	return ret;
+}
+
+/**
+ *	dev_valid_name - check if name is okay for network device
+ *	@name: name string
+ *
+ *	Network device names need to be valid file names to
+ *	to allow sysfs to work.  We also disallow any kind of
+ *	whitespace.
+ */
+int dev_valid_name(const char *name)
+{
+	if (*name == '\0')
+		return 0;
+	if (strlen(name) >= IFNAMSIZ)
+		return 0;
+	if (!strcmp(name, ".") || !strcmp(name, ".."))
+		return 0;
+
+	while (*name) {
+		if (*name == '/' || isspace(*name))
+			return 0;
+		name++;
+	}
+	return 1;
+}
+
+/**
+ *	__dev_alloc_name - allocate a name for a device
+ *	@net: network namespace to allocate the device name in
+ *	@name: name format string
+ *	@buf:  scratch buffer and result name string
+ *
+ *	Passed a format string - eg "lt%d" it will try and find a suitable
+ *	id. It scans list of devices to build up a free map, then chooses
+ *	the first empty slot. The caller must hold the dev_base or rtnl lock
+ *	while allocating the name and adding the device in order to avoid
+ *	duplicates.
+ *	Limited to bits_per_byte * page size devices (ie 32K on most platforms).
+ *	Returns the number of the unit assigned or a negative errno code.
+ */
+
+static int __dev_alloc_name(struct net *net, const char *name, char *buf)
+{
+	int i = 0;
+	const char *p;
+	const int max_netdevices = 8*PAGE_SIZE;
+	unsigned long *inuse;
+	struct net_device *d;
+
+	p = strnchr(name, IFNAMSIZ-1, '%');
+	if (p) {
+		/*
+		 * Verify the string as this thing may have come from
+		 * the user.  There must be either one "%d" and no other "%"
+		 * characters.
+		 */
+		if (p[1] != 'd' || strchr(p + 2, '%'))
+			return -EINVAL;
+
+		/* Use one page as a bit array of possible slots */
+		inuse = (unsigned long *) get_zeroed_page(GFP_ATOMIC);
+		if (!inuse)
+			return -ENOMEM;
+
+		for_each_netdev(net, d) {
+			if (!sscanf(d->name, name, &i))
+				continue;
+			if (i < 0 || i >= max_netdevices)
+				continue;
+
+			/*  avoid cases where sscanf is not exact inverse of printf */
+			snprintf(buf, IFNAMSIZ, name, i);
+			if (!strncmp(buf, d->name, IFNAMSIZ))
+				set_bit(i, inuse);
+		}
+
+		i = find_first_zero_bit(inuse, max_netdevices);
+		free_page((unsigned long) inuse);
+	}
+
+	snprintf(buf, IFNAMSIZ, name, i);
+	if (!__dev_get_by_name(net, buf))
+		return i;
+
+	/* It is possible to run out of possible slots
+	 * when the name is long and there isn't enough space left
+	 * for the digits, or if all bits are used.
+	 */
+	return -ENFILE;
+}
+
+/**
+ *	dev_alloc_name - allocate a name for a device
+ *	@dev: device
+ *	@name: name format string
+ *
+ *	Passed a format string - eg "lt%d" it will try and find a suitable
+ *	id. It scans list of devices to build up a free map, then chooses
+ *	the first empty slot. The caller must hold the dev_base or rtnl lock
+ *	while allocating the name and adding the device in order to avoid
+ *	duplicates.
+ *	Limited to bits_per_byte * page size devices (ie 32K on most platforms).
+ *	Returns the number of the unit assigned or a negative errno code.
+ */
+
+int dev_alloc_name(struct net_device *dev, const char *name)
+{
+	char buf[IFNAMSIZ];
+	struct net *net;
+	int ret;
+
+	BUG_ON(!dev_net(dev));
+	net = dev_net(dev);
+	ret = __dev_alloc_name(net, name, buf);
+	if (ret >= 0)
+		strlcpy(dev->name, buf, IFNAMSIZ);
+	return ret;
+}
+
+
+/**
+ *	dev_change_name - change name of a device
+ *	@dev: device
+ *	@newname: name (or format string) must be at least IFNAMSIZ
+ *
+ *	Change name of a device, can pass format strings "eth%d".
+ *	for wildcarding.
+ */
+int dev_change_name(struct net_device *dev, const char *newname)
+{
+	char oldname[IFNAMSIZ];
+	int err = 0;
+	int ret;
+	struct net *net;
+
+	ASSERT_RTNL();
+	BUG_ON(!dev_net(dev));
+
+	net = dev_net(dev);
+	if (dev->flags & IFF_UP)
+		return -EBUSY;
+
+	if (!dev_valid_name(newname))
+		return -EINVAL;
+
+	if (strncmp(newname, dev->name, IFNAMSIZ) == 0)
+		return 0;
+
+	memcpy(oldname, dev->name, IFNAMSIZ);
+
+	if (strchr(newname, '%')) {
+		err = dev_alloc_name(dev, newname);
+		if (err < 0)
+			return err;
+	}
+	else if (__dev_get_by_name(net, newname))
+		return -EEXIST;
+	else
+		strlcpy(dev->name, newname, IFNAMSIZ);
+
+rollback:
+	/* For now only devices in the initial network namespace
+	 * are in sysfs.
+	 */
+	if (net == &init_net) {
+		ret = device_rename(&dev->dev, dev->name);
+		if (ret) {
+			memcpy(dev->name, oldname, IFNAMSIZ);
+			return ret;
+		}
+	}
+
+	write_lock_bh(&dev_base_lock);
+	hlist_del(&dev->name_hlist);
+	hlist_add_head(&dev->name_hlist, dev_name_hash(net, dev->name));
+	write_unlock_bh(&dev_base_lock);
+
+	ret = call_netdevice_notifiers(NETDEV_CHANGENAME, dev);
+	ret = notifier_to_errno(ret);
+
+	if (ret) {
+		if (err) {
+			printk(KERN_ERR
+			       "%s: name change rollback failed: %d.\n",
+			       dev->name, ret);
+		} else {
+			err = ret;
+			memcpy(dev->name, oldname, IFNAMSIZ);
+			goto rollback;
+		}
+	}
+
+	return err;
+}
+
+/**
+ *	dev_set_alias - change ifalias of a device
+ *	@dev: device
+ *	@alias: name up to IFALIASZ
+ *	@len: limit of bytes to copy from info
+ *
+ *	Set ifalias for a device,
+ */
+int dev_set_alias(struct net_device *dev, const char *alias, size_t len)
+{
+	ASSERT_RTNL();
+
+	if (len >= IFALIASZ)
+		return -EINVAL;
+
+	if (!len) {
+		if (dev->ifalias) {
+			kfree(dev->ifalias);
+			dev->ifalias = NULL;
+		}
+		return 0;
+	}
+
+	dev->ifalias = krealloc(dev->ifalias, len+1, GFP_KERNEL);
+	if (!dev->ifalias)
+		return -ENOMEM;
+
+	strlcpy(dev->ifalias, alias, len+1);
+	return len;
+}
+
+
+/**
+ *	netdev_features_change - device changes features
+ *	@dev: device to cause notification
+ *
+ *	Called to indicate a device has changed features.
+ */
+void netdev_features_change(struct net_device *dev)
+{
+	call_netdevice_notifiers(NETDEV_FEAT_CHANGE, dev);
+}
+EXPORT_SYMBOL(netdev_features_change);
+
+/**
+ *	netdev_state_change - device changes state
+ *	@dev: device to cause notification
+ *
+ *	Called to indicate a device has changed state. This function calls
+ *	the notifier chains for netdev_chain and sends a NEWLINK message
+ *	to the routing socket.
+ */
+void netdev_state_change(struct net_device *dev)
+{
+	if (dev->flags & IFF_UP) {
+		call_netdevice_notifiers(NETDEV_CHANGE, dev);
+		rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
+	}
+}
+
+void netdev_bonding_change(struct net_device *dev)
+{
+	call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, dev);
+}
+EXPORT_SYMBOL(netdev_bonding_change);
+
+/**
+ *	dev_load 	- load a network module
+ *	@net: the applicable net namespace
+ *	@name: name of interface
+ *
+ *	If a network interface is not present and the process has suitable
+ *	privileges this function loads the module. If module loading is not
+ *	available in this kernel then it becomes a nop.
+ */
+
+void dev_load(struct net *net, const char *name)
+{
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_name(net, name);
+	read_unlock(&dev_base_lock);
+
+	if (!dev && capable(CAP_SYS_MODULE))
+		request_module("%s", name);
+}
+
+/**
+ *	dev_open	- prepare an interface for use.
+ *	@dev:	device to open
+ *
+ *	Takes a device from down to up state. The device's private open
+ *	function is invoked and then the multicast lists are loaded. Finally
+ *	the device is moved into the up state and a %NETDEV_UP message is
+ *	sent to the netdev notifier chain.
+ *
+ *	Calling this function on an active interface is a nop. On a failure
+ *	a negative errno code is returned.
+ */
+int dev_open(struct net_device *dev)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int ret = 0;
+
+	ASSERT_RTNL();
+
+	/*
+	 *	Is it already up?
+	 */
+
+	if (dev->flags & IFF_UP)
+		return 0;
+
+	/*
+	 *	Is it even present?
+	 */
+	if (!netif_device_present(dev))
+		return -ENODEV;
+
+	/*
+	 *	Call device private open method
+	 */
+	set_bit(__LINK_STATE_START, &dev->state);
+
+	if (ops->ndo_validate_addr)
+		ret = ops->ndo_validate_addr(dev);
+
+	if (!ret && ops->ndo_open)
+		ret = ops->ndo_open(dev);
+
+	/*
+	 *	If it went open OK then:
+	 */
+
+	if (ret)
+		clear_bit(__LINK_STATE_START, &dev->state);
+	else {
+		/*
+		 *	Set the flags.
+		 */
+		dev->flags |= IFF_UP;
+
+		/*
+		 *	Enable NET_DMA
+		 */
+		net_dmaengine_get();
+
+		/*
+		 *	Initialize multicasting status
+		 */
+		dev_set_rx_mode(dev);
+
+		/*
+		 *	Wakeup transmit queue engine
+		 */
+		dev_activate(dev);
+
+		/*
+		 *	... and announce new interface.
+		 */
+		call_netdevice_notifiers(NETDEV_UP, dev);
+	}
+
+	return ret;
+}
+
+/**
+ *	dev_close - shutdown an interface.
+ *	@dev: device to shutdown
+ *
+ *	This function moves an active device into down state. A
+ *	%NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device
+ *	is then deactivated and finally a %NETDEV_DOWN is sent to the notifier
+ *	chain.
+ */
+int dev_close(struct net_device *dev)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	ASSERT_RTNL();
+
+	might_sleep();
+
+	if (!(dev->flags & IFF_UP))
+		return 0;
+
+	/*
+	 *	Tell people we are going down, so that they can
+	 *	prepare to death, when device is still operating.
+	 */
+	call_netdevice_notifiers(NETDEV_GOING_DOWN, dev);
+
+	clear_bit(__LINK_STATE_START, &dev->state);
+
+	/* Synchronize to scheduled poll. We cannot touch poll list,
+	 * it can be even on different cpu. So just clear netif_running().
+	 *
+	 * dev->stop() will invoke napi_disable() on all of it's
+	 * napi_struct instances on this device.
+	 */
+	smp_mb__after_clear_bit(); /* Commit netif_running(). */
+
+	dev_deactivate(dev);
+
+	/*
+	 *	Call the device specific close. This cannot fail.
+	 *	Only if device is UP
+	 *
+	 *	We allow it to be called even after a DETACH hot-plug
+	 *	event.
+	 */
+	if (ops->ndo_stop)
+		ops->ndo_stop(dev);
+
+	/*
+	 *	Device is now down.
+	 */
+
+	dev->flags &= ~IFF_UP;
+
+	/*
+	 * Tell people we are down
+	 */
+	call_netdevice_notifiers(NETDEV_DOWN, dev);
+
+	/*
+	 *	Shutdown NET_DMA
+	 */
+	net_dmaengine_put();
+
+	return 0;
+}
+
+
+/**
+ *	dev_disable_lro - disable Large Receive Offload on a device
+ *	@dev: device
+ *
+ *	Disable Large Receive Offload (LRO) on a net device.  Must be
+ *	called under RTNL.  This is needed if received packets may be
+ *	forwarded to another interface.
+ */
+void dev_disable_lro(struct net_device *dev)
+{
+	if (dev->ethtool_ops && dev->ethtool_ops->get_flags &&
+	    dev->ethtool_ops->set_flags) {
+		u32 flags = dev->ethtool_ops->get_flags(dev);
+		if (flags & ETH_FLAG_LRO) {
+			flags &= ~ETH_FLAG_LRO;
+			dev->ethtool_ops->set_flags(dev, flags);
+		}
+	}
+	WARN_ON(dev->features & NETIF_F_LRO);
+}
+EXPORT_SYMBOL(dev_disable_lro);
+
+
+static int dev_boot_phase = 1;
+
+/*
+ *	Device change register/unregister. These are not inline or static
+ *	as we export them to the world.
+ */
+
+/**
+ *	register_netdevice_notifier - register a network notifier block
+ *	@nb: notifier
+ *
+ *	Register a notifier to be called when network device events occur.
+ *	The notifier passed is linked into the kernel structures and must
+ *	not be reused until it has been unregistered. A negative errno code
+ *	is returned on a failure.
+ *
+ * 	When registered all registration and up events are replayed
+ *	to the new notifier to allow device to have a race free
+ *	view of the network device list.
+ */
+
+int register_netdevice_notifier(struct notifier_block *nb)
+{
+	struct net_device *dev;
+	struct net_device *last;
+	struct net *net;
+	int err;
+
+	rtnl_lock();
+	err = raw_notifier_chain_register(&netdev_chain, nb);
+	if (err)
+		goto unlock;
+	if (dev_boot_phase)
+		goto unlock;
+	for_each_net(net) {
+		for_each_netdev(net, dev) {
+			err = nb->notifier_call(nb, NETDEV_REGISTER, dev);
+			err = notifier_to_errno(err);
+			if (err)
+				goto rollback;
+
+			if (!(dev->flags & IFF_UP))
+				continue;
+
+			nb->notifier_call(nb, NETDEV_UP, dev);
+		}
+	}
+
+unlock:
+	rtnl_unlock();
+	return err;
+
+rollback:
+	last = dev;
+	for_each_net(net) {
+		for_each_netdev(net, dev) {
+			if (dev == last)
+				break;
+
+			if (dev->flags & IFF_UP) {
+				nb->notifier_call(nb, NETDEV_GOING_DOWN, dev);
+				nb->notifier_call(nb, NETDEV_DOWN, dev);
+			}
+			nb->notifier_call(nb, NETDEV_UNREGISTER, dev);
+		}
+	}
+
+	raw_notifier_chain_unregister(&netdev_chain, nb);
+	goto unlock;
+}
+
+/**
+ *	unregister_netdevice_notifier - unregister a network notifier block
+ *	@nb: notifier
+ *
+ *	Unregister a notifier previously registered by
+ *	register_netdevice_notifier(). The notifier is unlinked into the
+ *	kernel structures and may then be reused. A negative errno code
+ *	is returned on a failure.
+ */
+
+int unregister_netdevice_notifier(struct notifier_block *nb)
+{
+	int err;
+
+	rtnl_lock();
+	err = raw_notifier_chain_unregister(&netdev_chain, nb);
+	rtnl_unlock();
+	return err;
+}
+
+/**
+ *	call_netdevice_notifiers - call all network notifier blocks
+ *      @val: value passed unmodified to notifier function
+ *      @dev: net_device pointer passed unmodified to notifier function
+ *
+ *	Call all network notifier blocks.  Parameters and return value
+ *	are as for raw_notifier_call_chain().
+ */
+
+int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
+{
+	return raw_notifier_call_chain(&netdev_chain, val, dev);
+}
+
+/* When > 0 there are consumers of rx skb time stamps */
+static atomic_t netstamp_needed = ATOMIC_INIT(0);
+
+void net_enable_timestamp(void)
+{
+	atomic_inc(&netstamp_needed);
+}
+
+void net_disable_timestamp(void)
+{
+	atomic_dec(&netstamp_needed);
+}
+
+static inline void net_timestamp(struct sk_buff *skb)
+{
+	if (atomic_read(&netstamp_needed))
+		__net_timestamp(skb);
+	else
+		skb->tstamp.tv64 = 0;
+}
+
+/*
+ *	Support routine. Sends outgoing frames to any network
+ *	taps currently in use.
+ */
+
+static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct packet_type *ptype;
+
+	net_timestamp(skb);
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, &ptype_all, list) {
+		/* Never send packets back to the socket
+		 * they originated from - MvS (miquels@drinkel.ow.org)
+		 */
+		if ((ptype->dev == dev || !ptype->dev) &&
+		    (ptype->af_packet_priv == NULL ||
+		     (struct sock *)ptype->af_packet_priv != skb->sk)) {
+			struct sk_buff *skb2= skb_clone(skb, GFP_ATOMIC);
+			if (!skb2)
+				break;
+
+			/* skb->nh should be correctly
+			   set by sender, so that the second statement is
+			   just protection against buggy protocols.
+			 */
+			skb_reset_mac_header(skb2);
+
+			if (skb_network_header(skb2) < skb2->data ||
+			    skb2->network_header > skb2->tail) {
+				if (net_ratelimit())
+					printk(KERN_CRIT "protocol %04x is "
+					       "buggy, dev %s\n",
+					       skb2->protocol, dev->name);
+				skb_reset_network_header(skb2);
+			}
+
+			skb2->transport_header = skb2->network_header;
+			skb2->pkt_type = PACKET_OUTGOING;
+			ptype->func(skb2, skb->dev, ptype, skb->dev);
+		}
+	}
+	rcu_read_unlock();
+}
+
+
+static inline void __netif_reschedule(struct Qdisc *q)
+{
+	struct softnet_data *sd;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	sd = &__get_cpu_var(softnet_data);
+	q->next_sched = sd->output_queue;
+	sd->output_queue = q;
+	raise_softirq_irqoff(NET_TX_SOFTIRQ);
+	local_irq_restore(flags);
+}
+
+void __netif_schedule(struct Qdisc *q)
+{
+	if (!test_and_set_bit(__QDISC_STATE_SCHED, &q->state))
+		__netif_reschedule(q);
+}
+EXPORT_SYMBOL(__netif_schedule);
+
+void dev_kfree_skb_irq(struct sk_buff *skb)
+{
+	if (atomic_dec_and_test(&skb->users)) {
+		struct softnet_data *sd;
+		unsigned long flags;
+
+		local_irq_save(flags);
+		sd = &__get_cpu_var(softnet_data);
+		skb->next = sd->completion_queue;
+		sd->completion_queue = skb;
+		raise_softirq_irqoff(NET_TX_SOFTIRQ);
+		local_irq_restore(flags);
+	}
+}
+EXPORT_SYMBOL(dev_kfree_skb_irq);
+
+void dev_kfree_skb_any(struct sk_buff *skb)
+{
+	if (in_irq() || irqs_disabled())
+		dev_kfree_skb_irq(skb);
+	else
+		dev_kfree_skb(skb);
+}
+EXPORT_SYMBOL(dev_kfree_skb_any);
+
+
+/**
+ * netif_device_detach - mark device as removed
+ * @dev: network device
+ *
+ * Mark device as removed from system and therefore no longer available.
+ */
+void netif_device_detach(struct net_device *dev)
+{
+	if (test_and_clear_bit(__LINK_STATE_PRESENT, &dev->state) &&
+	    netif_running(dev)) {
+		netif_stop_queue(dev);
+	}
+}
+EXPORT_SYMBOL(netif_device_detach);
+
+/**
+ * netif_device_attach - mark device as attached
+ * @dev: network device
+ *
+ * Mark device as attached from system and restart if needed.
+ */
+void netif_device_attach(struct net_device *dev)
+{
+	if (!test_and_set_bit(__LINK_STATE_PRESENT, &dev->state) &&
+	    netif_running(dev)) {
+		netif_wake_queue(dev);
+		__netdev_watchdog_up(dev);
+	}
+}
+EXPORT_SYMBOL(netif_device_attach);
+
+static bool can_checksum_protocol(unsigned long features, __be16 protocol)
+{
+	return ((features & NETIF_F_GEN_CSUM) ||
+		((features & NETIF_F_IP_CSUM) &&
+		 protocol == htons(ETH_P_IP)) ||
+		((features & NETIF_F_IPV6_CSUM) &&
+		 protocol == htons(ETH_P_IPV6)));
+}
+
+static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb)
+{
+	if (can_checksum_protocol(dev->features, skb->protocol))
+		return true;
+
+	if (skb->protocol == htons(ETH_P_8021Q)) {
+		struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
+		if (can_checksum_protocol(dev->features & dev->vlan_features,
+					  veh->h_vlan_encapsulated_proto))
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * Invalidate hardware checksum when packet is to be mangled, and
+ * complete checksum manually on outgoing path.
+ */
+int skb_checksum_help(struct sk_buff *skb)
+{
+	__wsum csum;
+	int ret = 0, offset;
+
+	if (skb->ip_summed == CHECKSUM_COMPLETE)
+		goto out_set_summed;
+
+	if (unlikely(skb_shinfo(skb)->gso_size)) {
+		/* Let GSO fix up the checksum. */
+		goto out_set_summed;
+	}
+
+	offset = skb->csum_start - skb_headroom(skb);
+	BUG_ON(offset >= skb_headlen(skb));
+	csum = skb_checksum(skb, offset, skb->len - offset, 0);
+
+	offset += skb->csum_offset;
+	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		if (ret)
+			goto out;
+	}
+
+	*(__sum16 *)(skb->data + offset) = csum_fold(csum);
+out_set_summed:
+	skb->ip_summed = CHECKSUM_NONE;
+out:
+	return ret;
+}
+
+/**
+ *	skb_gso_segment - Perform segmentation on skb.
+ *	@skb: buffer to segment
+ *	@features: features for the output path (see dev->features)
+ *
+ *	This function segments the given skb and returns a list of segments.
+ *
+ *	It may return NULL if the skb requires no segmentation.  This is
+ *	only possible when GSO is used for verifying header integrity.
+ */
+struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
+{
+	struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);
+	struct packet_type *ptype;
+	__be16 type = skb->protocol;
+	int err;
+
+	skb_reset_mac_header(skb);
+	skb->mac_len = skb->network_header - skb->mac_header;
+	__skb_pull(skb, skb->mac_len);
+
+	if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
+		struct net_device *dev = skb->dev;
+		struct ethtool_drvinfo info = {};
+
+		if (dev && dev->ethtool_ops && dev->ethtool_ops->get_drvinfo)
+			dev->ethtool_ops->get_drvinfo(dev, &info);
+
+		WARN(1, "%s: caps=(0x%lx, 0x%lx) len=%d data_len=%d "
+			"ip_summed=%d",
+		     info.driver, dev ? dev->features : 0L,
+		     skb->sk ? skb->sk->sk_route_caps : 0L,
+		     skb->len, skb->data_len, skb->ip_summed);
+
+		if (skb_header_cloned(skb) &&
+		    (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
+			return ERR_PTR(err);
+	}
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype,
+			&ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
+		if (ptype->type == type && !ptype->dev && ptype->gso_segment) {
+			if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
+				err = ptype->gso_send_check(skb);
+				segs = ERR_PTR(err);
+				if (err || skb_gso_ok(skb, features))
+					break;
+				__skb_push(skb, (skb->data -
+						 skb_network_header(skb)));
+			}
+			segs = ptype->gso_segment(skb, features);
+			break;
+		}
+	}
+	rcu_read_unlock();
+
+	__skb_push(skb, skb->data - skb_mac_header(skb));
+
+	return segs;
+}
+
+EXPORT_SYMBOL(skb_gso_segment);
+
+/* Take action when hardware reception checksum errors are detected. */
+#ifdef CONFIG_BUG
+void netdev_rx_csum_fault(struct net_device *dev)
+{
+	if (net_ratelimit()) {
+		printk(KERN_ERR "%s: hw csum failure.\n",
+			dev ? dev->name : "<unknown>");
+		dump_stack();
+	}
+}
+EXPORT_SYMBOL(netdev_rx_csum_fault);
+#endif
+
+/* Actually, we should eliminate this check as soon as we know, that:
+ * 1. IOMMU is present and allows to map all the memory.
+ * 2. No high memory really exists on this machine.
+ */
+
+static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
+{
+#ifdef CONFIG_HIGHMEM
+	int i;
+
+	if (dev->features & NETIF_F_HIGHDMA)
+		return 0;
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
+		if (PageHighMem(skb_shinfo(skb)->frags[i].page))
+			return 1;
+
+#endif
+	return 0;
+}
+
+struct dev_gso_cb {
+	void (*destructor)(struct sk_buff *skb);
+};
+
+#define DEV_GSO_CB(skb) ((struct dev_gso_cb *)(skb)->cb)
+
+static void dev_gso_skb_destructor(struct sk_buff *skb)
+{
+	struct dev_gso_cb *cb;
+
+	do {
+		struct sk_buff *nskb = skb->next;
+
+		skb->next = nskb->next;
+		nskb->next = NULL;
+		kfree_skb(nskb);
+	} while (skb->next);
+
+	cb = DEV_GSO_CB(skb);
+	if (cb->destructor)
+		cb->destructor(skb);
+}
+
+/**
+ *	dev_gso_segment - Perform emulated hardware segmentation on skb.
+ *	@skb: buffer to segment
+ *
+ *	This function segments the given skb and stores the list of segments
+ *	in skb->next.
+ */
+static int dev_gso_segment(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	struct sk_buff *segs;
+	int features = dev->features & ~(illegal_highdma(dev, skb) ?
+					 NETIF_F_SG : 0);
+
+	segs = skb_gso_segment(skb, features);
+
+	/* Verifying header integrity only. */
+	if (!segs)
+		return 0;
+
+	if (IS_ERR(segs))
+		return PTR_ERR(segs);
+
+	skb->next = segs;
+	DEV_GSO_CB(skb)->destructor = skb->destructor;
+	skb->destructor = dev_gso_skb_destructor;
+
+	return 0;
+}
+
+int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
+			struct netdev_queue *txq)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	prefetch(&dev->netdev_ops->ndo_start_xmit);
+	if (likely(!skb->next)) {
+		if (!list_empty(&ptype_all))
+			dev_queue_xmit_nit(skb, dev);
+
+		if (netif_needs_gso(dev, skb)) {
+			if (unlikely(dev_gso_segment(skb)))
+				goto out_kfree_skb;
+			if (skb->next)
+				goto gso;
+		}
+
+		return ops->ndo_start_xmit(skb, dev);
+	}
+
+gso:
+	do {
+		struct sk_buff *nskb = skb->next;
+		int rc;
+
+		skb->next = nskb->next;
+		nskb->next = NULL;
+		rc = ops->ndo_start_xmit(nskb, dev);
+		if (unlikely(rc)) {
+			nskb->next = skb->next;
+			skb->next = nskb;
+			return rc;
+		}
+		if (unlikely(netif_tx_queue_stopped(txq) && skb->next))
+			return NETDEV_TX_BUSY;
+	} while (skb->next);
+
+	skb->destructor = DEV_GSO_CB(skb)->destructor;
+
+out_kfree_skb:
+	kfree_skb(skb);
+	return 0;
+}
+
+static u32 simple_tx_hashrnd;
+static int simple_tx_hashrnd_initialized = 0;
+
+static u16 simple_tx_hash(struct net_device *dev, struct sk_buff *skb)
+{
+	u32 addr1, addr2, ports;
+	u32 hash, ihl;
+	u8 ip_proto = 0;
+
+	if (unlikely(!simple_tx_hashrnd_initialized)) {
+		get_random_bytes(&simple_tx_hashrnd, 4);
+		simple_tx_hashrnd_initialized = 1;
+	}
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		if (!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)))
+			ip_proto = ip_hdr(skb)->protocol;
+		addr1 = ip_hdr(skb)->saddr;
+		addr2 = ip_hdr(skb)->daddr;
+		ihl = ip_hdr(skb)->ihl;
+		break;
+	case htons(ETH_P_IPV6):
+		ip_proto = ipv6_hdr(skb)->nexthdr;
+		addr1 = ipv6_hdr(skb)->saddr.s6_addr32[3];
+		addr2 = ipv6_hdr(skb)->daddr.s6_addr32[3];
+		ihl = (40 >> 2);
+		break;
+	default:
+		return 0;
+	}
+
+
+	switch (ip_proto) {
+	case IPPROTO_TCP:
+	case IPPROTO_UDP:
+	case IPPROTO_DCCP:
+	case IPPROTO_ESP:
+	case IPPROTO_AH:
+	case IPPROTO_SCTP:
+	case IPPROTO_UDPLITE:
+		ports = *((u32 *) (skb_network_header(skb) + (ihl * 4)));
+		break;
+
+	default:
+		ports = 0;
+		break;
+	}
+
+	hash = jhash_3words(addr1, addr2, ports, simple_tx_hashrnd);
+
+	return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
+}
+
+static struct netdev_queue *dev_pick_tx(struct net_device *dev,
+					struct sk_buff *skb)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	u16 queue_index = 0;
+
+	if (ops->ndo_select_queue)
+		queue_index = ops->ndo_select_queue(dev, skb);
+	else if (dev->real_num_tx_queues > 1)
+		queue_index = simple_tx_hash(dev, skb);
+
+	skb_set_queue_mapping(skb, queue_index);
+	return netdev_get_tx_queue(dev, queue_index);
+}
+
+/**
+ *	dev_queue_xmit - transmit a buffer
+ *	@skb: buffer to transmit
+ *
+ *	Queue a buffer for transmission to a network device. The caller must
+ *	have set the device and priority and built the buffer before calling
+ *	this function. The function can be called from an interrupt.
+ *
+ *	A negative errno code is returned on a failure. A success does not
+ *	guarantee the frame will be transmitted as it may be dropped due
+ *	to congestion or traffic shaping.
+ *
+ * -----------------------------------------------------------------------------------
+ *      I notice this method can also return errors from the queue disciplines,
+ *      including NET_XMIT_DROP, which is a positive value.  So, errors can also
+ *      be positive.
+ *
+ *      Regardless of the return value, the skb is consumed, so it is currently
+ *      difficult to retry a send to this method.  (You can bump the ref count
+ *      before sending to hold a reference for retry if you are careful.)
+ *
+ *      When calling this method, interrupts MUST be enabled.  This is because
+ *      the BH enable code must have IRQs enabled so that it will not deadlock.
+ *          --BLG
+ */
+int dev_queue_xmit(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	struct netdev_queue *txq;
+	struct Qdisc *q;
+	int rc = -ENOMEM;
+
+	/* GSO will handle the following emulations directly. */
+	if (netif_needs_gso(dev, skb))
+		goto gso;
+
+	if (skb_shinfo(skb)->frag_list &&
+	    !(dev->features & NETIF_F_FRAGLIST) &&
+	    __skb_linearize(skb))
+		goto out_kfree_skb;
+
+	/* Fragmented skb is linearized if device does not support SG,
+	 * or if at least one of fragments is in highmem and device
+	 * does not support DMA from it.
+	 */
+	if (skb_shinfo(skb)->nr_frags &&
+	    (!(dev->features & NETIF_F_SG) || illegal_highdma(dev, skb)) &&
+	    __skb_linearize(skb))
+		goto out_kfree_skb;
+
+	/* If packet is not checksummed and device does not support
+	 * checksumming for this protocol, complete checksumming here.
+	 */
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		skb_set_transport_header(skb, skb->csum_start -
+					      skb_headroom(skb));
+		if (!dev_can_checksum(dev, skb) && skb_checksum_help(skb))
+			goto out_kfree_skb;
+	}
+
+gso:
+	/* Disable soft irqs for various locks below. Also
+	 * stops preemption for RCU.
+	 */
+	rcu_read_lock_bh();
+
+	txq = dev_pick_tx(dev, skb);
+	q = rcu_dereference(txq->qdisc);
+
+#ifdef CONFIG_NET_CLS_ACT
+	skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS);
+#endif
+	if (q->enqueue) {
+		spinlock_t *root_lock = qdisc_lock(q);
+
+		spin_lock(root_lock);
+
+		if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) {
+			kfree_skb(skb);
+			rc = NET_XMIT_DROP;
+		} else {
+			rc = qdisc_enqueue_root(skb, q);
+			qdisc_run(q);
+		}
+		spin_unlock(root_lock);
+
+		goto out;
+	}
+
+	/* The device has no queue. Common case for software devices:
+	   loopback, all the sorts of tunnels...
+
+	   Really, it is unlikely that netif_tx_lock protection is necessary
+	   here.  (f.e. loopback and IP tunnels are clean ignoring statistics
+	   counters.)
+	   However, it is possible, that they rely on protection
+	   made by us here.
+
+	   Check this and shot the lock. It is not prone from deadlocks.
+	   Either shot noqueue qdisc, it is even simpler 8)
+	 */
+	if (dev->flags & IFF_UP) {
+		int cpu = smp_processor_id(); /* ok because BHs are off */
+
+		if (txq->xmit_lock_owner != cpu) {
+
+			HARD_TX_LOCK(dev, txq, cpu);
+
+			if (!netif_tx_queue_stopped(txq)) {
+				rc = 0;
+				if (!dev_hard_start_xmit(skb, dev, txq)) {
+					HARD_TX_UNLOCK(dev, txq);
+					goto out;
+				}
+			}
+			HARD_TX_UNLOCK(dev, txq);
+			if (net_ratelimit())
+				printk(KERN_CRIT "Virtual device %s asks to "
+				       "queue packet!\n", dev->name);
+		} else {
+			/* Recursion is detected! It is possible,
+			 * unfortunately */
+			if (net_ratelimit())
+				printk(KERN_CRIT "Dead loop on virtual device "
+				       "%s, fix it urgently!\n", dev->name);
+		}
+	}
+
+	rc = -ENETDOWN;
+	rcu_read_unlock_bh();
+
+out_kfree_skb:
+	kfree_skb(skb);
+	return rc;
+out:
+	rcu_read_unlock_bh();
+	return rc;
+}
+
+
+/*=======================================================================
+			Receiver routines
+  =======================================================================*/
+
+int netdev_max_backlog __read_mostly = 1000;
+int netdev_budget __read_mostly = 300;
+int weight_p __read_mostly = 64;            /* old backlog weight */
+
+DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, };
+
+
+/**
+ *	netif_rx	-	post buffer to the network code
+ *	@skb: buffer to post
+ *
+ *	This function receives a packet from a device driver and queues it for
+ *	the upper (protocol) levels to process.  It always succeeds. The buffer
+ *	may be dropped during processing for congestion control or by the
+ *	protocol layers.
+ *
+ *	return values:
+ *	NET_RX_SUCCESS	(no congestion)
+ *	NET_RX_DROP     (packet was dropped)
+ *
+ */
+
+int netif_rx(struct sk_buff *skb)
+{
+	struct softnet_data *queue;
+	unsigned long flags;
+
+	/* if netpoll wants it, pretend we never saw it */
+	if (netpoll_rx(skb))
+		return NET_RX_DROP;
+
+	if (!skb->tstamp.tv64)
+		net_timestamp(skb);
+
+	/*
+	 * The code is rearranged so that the path is the most
+	 * short when CPU is congested, but is still operating.
+	 */
+	local_irq_save(flags);
+	queue = &__get_cpu_var(softnet_data);
+
+	__get_cpu_var(netdev_rx_stat).total++;
+	if (queue->input_pkt_queue.qlen <= netdev_max_backlog) {
+		if (queue->input_pkt_queue.qlen) {
+enqueue:
+			__skb_queue_tail(&queue->input_pkt_queue, skb);
+			local_irq_restore(flags);
+			return NET_RX_SUCCESS;
+		}
+
+		napi_schedule(&queue->backlog);
+		goto enqueue;
+	}
+
+	__get_cpu_var(netdev_rx_stat).dropped++;
+	local_irq_restore(flags);
+
+	kfree_skb(skb);
+	return NET_RX_DROP;
+}
+
+int netif_rx_ni(struct sk_buff *skb)
+{
+	int err;
+
+	preempt_disable();
+	err = netif_rx(skb);
+	if (local_softirq_pending())
+		do_softirq();
+	preempt_enable();
+
+	return err;
+}
+
+EXPORT_SYMBOL(netif_rx_ni);
+
+static void net_tx_action(struct softirq_action *h)
+{
+	struct softnet_data *sd = &__get_cpu_var(softnet_data);
+
+	if (sd->completion_queue) {
+		struct sk_buff *clist;
+
+		local_irq_disable();
+		clist = sd->completion_queue;
+		sd->completion_queue = NULL;
+		local_irq_enable();
+
+		while (clist) {
+			struct sk_buff *skb = clist;
+			clist = clist->next;
+
+			WARN_ON(atomic_read(&skb->users));
+			__kfree_skb(skb);
+		}
+	}
+
+	if (sd->output_queue) {
+		struct Qdisc *head;
+
+		local_irq_disable();
+		head = sd->output_queue;
+		sd->output_queue = NULL;
+		local_irq_enable();
+
+		while (head) {
+			struct Qdisc *q = head;
+			spinlock_t *root_lock;
+
+			head = head->next_sched;
+
+			root_lock = qdisc_lock(q);
+			if (spin_trylock(root_lock)) {
+				smp_mb__before_clear_bit();
+				clear_bit(__QDISC_STATE_SCHED,
+					  &q->state);
+				qdisc_run(q);
+				spin_unlock(root_lock);
+			} else {
+				if (!test_bit(__QDISC_STATE_DEACTIVATED,
+					      &q->state)) {
+					__netif_reschedule(q);
+				} else {
+					smp_mb__before_clear_bit();
+					clear_bit(__QDISC_STATE_SCHED,
+						  &q->state);
+				}
+			}
+		}
+	}
+}
+
+static inline int deliver_skb(struct sk_buff *skb,
+			      struct packet_type *pt_prev,
+			      struct net_device *orig_dev)
+{
+	atomic_inc(&skb->users);
+	return pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
+}
+
+#if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE)
+/* These hooks defined here for ATM */
+struct net_bridge;
+struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
+						unsigned char *addr);
+void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly;
+
+/*
+ * If bridge module is loaded call bridging hook.
+ *  returns NULL if packet was consumed.
+ */
+struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p,
+					struct sk_buff *skb) __read_mostly;
+static inline struct sk_buff *handle_bridge(struct sk_buff *skb,
+					    struct packet_type **pt_prev, int *ret,
+					    struct net_device *orig_dev)
+{
+	struct net_bridge_port *port;
+
+	if (skb->pkt_type == PACKET_LOOPBACK ||
+	    (port = rcu_dereference(skb->dev->br_port)) == NULL)
+		return skb;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	}
+
+	return br_handle_frame_hook(port, skb);
+}
+#else
+#define handle_bridge(skb, pt_prev, ret, orig_dev)	(skb)
+#endif
+
+#if defined(CONFIG_MACVLAN) || defined(CONFIG_MACVLAN_MODULE)
+struct sk_buff *(*macvlan_handle_frame_hook)(struct sk_buff *skb) __read_mostly;
+EXPORT_SYMBOL_GPL(macvlan_handle_frame_hook);
+
+static inline struct sk_buff *handle_macvlan(struct sk_buff *skb,
+					     struct packet_type **pt_prev,
+					     int *ret,
+					     struct net_device *orig_dev)
+{
+	if (skb->dev->macvlan_port == NULL)
+		return skb;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	}
+	return macvlan_handle_frame_hook(skb);
+}
+#else
+#define handle_macvlan(skb, pt_prev, ret, orig_dev)	(skb)
+#endif
+
+#ifdef CONFIG_NET_CLS_ACT
+/* TODO: Maybe we should just force sch_ingress to be compiled in
+ * when CONFIG_NET_CLS_ACT is? otherwise some useless instructions
+ * a compare and 2 stores extra right now if we dont have it on
+ * but have CONFIG_NET_CLS_ACT
+ * NOTE: This doesnt stop any functionality; if you dont have
+ * the ingress scheduler, you just cant add policies on ingress.
+ *
+ */
+static int ing_filter(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	u32 ttl = G_TC_RTTL(skb->tc_verd);
+	struct netdev_queue *rxq;
+	int result = TC_ACT_OK;
+	struct Qdisc *q;
+
+	if (MAX_RED_LOOP < ttl++) {
+		printk(KERN_WARNING
+		       "Redir loop detected Dropping packet (%d->%d)\n",
+		       skb->iif, dev->ifindex);
+		return TC_ACT_SHOT;
+	}
+
+	skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl);
+	skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS);
+
+	rxq = &dev->rx_queue;
+
+	q = rxq->qdisc;
+	if (q != &noop_qdisc) {
+		spin_lock(qdisc_lock(q));
+		if (likely(!test_bit(__QDISC_STATE_DEACTIVATED, &q->state)))
+			result = qdisc_enqueue_root(skb, q);
+		spin_unlock(qdisc_lock(q));
+	}
+
+	return result;
+}
+
+static inline struct sk_buff *handle_ing(struct sk_buff *skb,
+					 struct packet_type **pt_prev,
+					 int *ret, struct net_device *orig_dev)
+{
+	if (skb->dev->rx_queue.qdisc == &noop_qdisc)
+		goto out;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	} else {
+		/* Huh? Why does turning on AF_PACKET affect this? */
+		skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
+	}
+
+	switch (ing_filter(skb)) {
+	case TC_ACT_SHOT:
+	case TC_ACT_STOLEN:
+		kfree_skb(skb);
+		return NULL;
+	}
+
+out:
+	skb->tc_verd = 0;
+	return skb;
+}
+#endif
+
+/*
+ * 	netif_nit_deliver - deliver received packets to network taps
+ * 	@skb: buffer
+ *
+ * 	This function is used to deliver incoming packets to network
+ * 	taps. It should be used when the normal netif_receive_skb path
+ * 	is bypassed, for example because of VLAN acceleration.
+ */
+void netif_nit_deliver(struct sk_buff *skb)
+{
+	struct packet_type *ptype;
+
+	if (list_empty(&ptype_all))
+		return;
+
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+	skb->mac_len = skb->network_header - skb->mac_header;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, &ptype_all, list) {
+		if (!ptype->dev || ptype->dev == skb->dev)
+			deliver_skb(skb, ptype, skb->dev);
+	}
+	rcu_read_unlock();
+}
+
+/**
+ *	netif_receive_skb - process receive buffer from network
+ *	@skb: buffer to process
+ *
+ *	netif_receive_skb() is the main receive data processing function.
+ *	It always succeeds. The buffer may be dropped during processing
+ *	for congestion control or by the protocol layers.
+ *
+ *	This function may only be called from softirq context and interrupts
+ *	should be enabled.
+ *
+ *	Return values (usually ignored):
+ *	NET_RX_SUCCESS: no congestion
+ *	NET_RX_DROP: packet was dropped
+ */
+int netif_receive_skb(struct sk_buff *skb)
+{
+	struct packet_type *ptype, *pt_prev;
+	struct net_device *orig_dev;
+	struct net_device *null_or_orig;
+	int ret = NET_RX_DROP;
+	__be16 type;
+
+	if (skb->vlan_tci && vlan_hwaccel_do_receive(skb))
+		return NET_RX_SUCCESS;
+
+	/* if we've gotten here through NAPI, check netpoll */
+	if (netpoll_receive_skb(skb))
+		return NET_RX_DROP;
+
+	if (!skb->tstamp.tv64)
+		net_timestamp(skb);
+
+	if (!skb->iif)
+		skb->iif = skb->dev->ifindex;
+
+	null_or_orig = NULL;
+	orig_dev = skb->dev;
+	if (orig_dev->master) {
+		if (skb_bond_should_drop(skb))
+			null_or_orig = orig_dev; /* deliver only exact match */
+		else
+			skb->dev = orig_dev->master;
+	}
+
+	__get_cpu_var(netdev_rx_stat).total++;
+
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+	skb->mac_len = skb->network_header - skb->mac_header;
+
+	pt_prev = NULL;
+
+	rcu_read_lock();
+
+#ifdef CONFIG_NET_CLS_ACT
+	if (skb->tc_verd & TC_NCLS) {
+		skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
+		goto ncls;
+	}
+#endif
+
+	list_for_each_entry_rcu(ptype, &ptype_all, list) {
+		if (ptype->dev == null_or_orig || ptype->dev == skb->dev ||
+		    ptype->dev == orig_dev) {
+			if (pt_prev)
+				ret = deliver_skb(skb, pt_prev, orig_dev);
+			pt_prev = ptype;
+		}
+	}
+
+#ifdef CONFIG_NET_CLS_ACT
+	skb = handle_ing(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
+		goto out;
+ncls:
+#endif
+
+	skb = handle_bridge(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
+		goto out;
+	skb = handle_macvlan(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
+		goto out;
+
+	type = skb->protocol;
+	list_for_each_entry_rcu(ptype,
+			&ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
+		if (ptype->type == type &&
+		    (ptype->dev == null_or_orig || ptype->dev == skb->dev ||
+		     ptype->dev == orig_dev)) {
+			if (pt_prev)
+				ret = deliver_skb(skb, pt_prev, orig_dev);
+			pt_prev = ptype;
+		}
+	}
+
+	if (pt_prev) {
+		ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
+	} else {
+		kfree_skb(skb);
+		/* Jamal, now you will not able to escape explaining
+		 * me how you were going to use this. :-)
+		 */
+		ret = NET_RX_DROP;
+	}
+
+out:
+	rcu_read_unlock();
+	return ret;
+}
+
+/* Network device is going away, flush any packets still pending  */
+static void flush_backlog(void *arg)
+{
+	struct net_device *dev = arg;
+	struct softnet_data *queue = &__get_cpu_var(softnet_data);
+	struct sk_buff *skb, *tmp;
+
+	skb_queue_walk_safe(&queue->input_pkt_queue, skb, tmp)
+		if (skb->dev == dev) {
+			__skb_unlink(skb, &queue->input_pkt_queue);
+			kfree_skb(skb);
+		}
+}
+
+static int napi_gro_complete(struct sk_buff *skb)
+{
+	struct packet_type *ptype;
+	__be16 type = skb->protocol;
+	struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];
+	int err = -ENOENT;
+
+	if (NAPI_GRO_CB(skb)->count == 1)
+		goto out;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, head, list) {
+		if (ptype->type != type || ptype->dev || !ptype->gro_complete)
+			continue;
+
+		err = ptype->gro_complete(skb);
+		break;
+	}
+	rcu_read_unlock();
+
+	if (err) {
+		WARN_ON(&ptype->list == head);
+		kfree_skb(skb);
+		return NET_RX_SUCCESS;
+	}
+
+out:
+	skb_shinfo(skb)->gso_size = 0;
+	__skb_push(skb, -skb_network_offset(skb));
+	return netif_receive_skb(skb);
+}
+
+void napi_gro_flush(struct napi_struct *napi)
+{
+	struct sk_buff *skb, *next;
+
+	for (skb = napi->gro_list; skb; skb = next) {
+		next = skb->next;
+		skb->next = NULL;
+		napi_gro_complete(skb);
+	}
+
+	napi->gro_list = NULL;
+}
+EXPORT_SYMBOL(napi_gro_flush);
+
+int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+{
+	struct sk_buff **pp = NULL;
+	struct packet_type *ptype;
+	__be16 type = skb->protocol;
+	struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];
+	int count = 0;
+	int same_flow;
+	int mac_len;
+	int free;
+
+	if (!(skb->dev->features & NETIF_F_GRO))
+		goto normal;
+
+	if (skb_is_gso(skb) || skb_shinfo(skb)->frag_list)
+		goto normal;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ptype, head, list) {
+		struct sk_buff *p;
+
+		if (ptype->type != type || ptype->dev || !ptype->gro_receive)
+			continue;
+
+		skb_reset_network_header(skb);
+		mac_len = skb->network_header - skb->mac_header;
+		skb->mac_len = mac_len;
+		NAPI_GRO_CB(skb)->same_flow = 0;
+		NAPI_GRO_CB(skb)->flush = 0;
+		NAPI_GRO_CB(skb)->free = 0;
+
+		for (p = napi->gro_list; p; p = p->next) {
+			count++;
+
+			if (!NAPI_GRO_CB(p)->same_flow)
+				continue;
+
+			if (p->mac_len != mac_len ||
+			    memcmp(skb_mac_header(p), skb_mac_header(skb),
+				   mac_len))
+				NAPI_GRO_CB(p)->same_flow = 0;
+		}
+
+		pp = ptype->gro_receive(&napi->gro_list, skb);
+		break;
+	}
+	rcu_read_unlock();
+
+	if (&ptype->list == head)
+		goto normal;
+
+	same_flow = NAPI_GRO_CB(skb)->same_flow;
+	free = NAPI_GRO_CB(skb)->free;
+
+	if (pp) {
+		struct sk_buff *nskb = *pp;
+
+		*pp = nskb->next;
+		nskb->next = NULL;
+		napi_gro_complete(nskb);
+		count--;
+	}
+
+	if (same_flow)
+		goto ok;
+
+	if (NAPI_GRO_CB(skb)->flush || count >= MAX_GRO_SKBS) {
+		__skb_push(skb, -skb_network_offset(skb));
+		goto normal;
+	}
+
+	NAPI_GRO_CB(skb)->count = 1;
+	skb_shinfo(skb)->gso_size = skb->len;
+	skb->next = napi->gro_list;
+	napi->gro_list = skb;
+
+ok:
+	return free;
+
+normal:
+	return -1;
+}
+EXPORT_SYMBOL(dev_gro_receive);
+
+static int __napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+{
+	struct sk_buff *p;
+
+	for (p = napi->gro_list; p; p = p->next) {
+		NAPI_GRO_CB(p)->same_flow = 1;
+		NAPI_GRO_CB(p)->flush = 0;
+	}
+
+	return dev_gro_receive(napi, skb);
+}
+
+int napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+{
+	if (netpoll_receive_skb(skb))
+		return NET_RX_DROP;
+
+	switch (__napi_gro_receive(napi, skb)) {
+	case -1:
+		return netif_receive_skb(skb);
+
+	case 1:
+		kfree_skb(skb);
+		break;
+	}
+
+	return NET_RX_SUCCESS;
+}
+EXPORT_SYMBOL(napi_gro_receive);
+
+void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
+{
+	__skb_pull(skb, skb_headlen(skb));
+	skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
+
+	napi->skb = skb;
+}
+EXPORT_SYMBOL(napi_reuse_skb);
+
+struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi,
+				  struct napi_gro_fraginfo *info)
+{
+	struct net_device *dev = napi->dev;
+	struct sk_buff *skb = napi->skb;
+
+	napi->skb = NULL;
+
+	if (!skb) {
+		skb = netdev_alloc_skb(dev, GRO_MAX_HEAD + NET_IP_ALIGN);
+		if (!skb)
+			goto out;
+
+		skb_reserve(skb, NET_IP_ALIGN);
+	}
+
+	BUG_ON(info->nr_frags > MAX_SKB_FRAGS);
+	skb_shinfo(skb)->nr_frags = info->nr_frags;
+	memcpy(skb_shinfo(skb)->frags, info->frags, sizeof(info->frags));
+
+	skb->data_len = info->len;
+	skb->len += info->len;
+	skb->truesize += info->len;
+
+	if (!pskb_may_pull(skb, ETH_HLEN)) {
+		napi_reuse_skb(napi, skb);
+		skb = NULL;
+		goto out;
+	}
+
+	skb->protocol = eth_type_trans(skb, dev);
+
+	skb->ip_summed = info->ip_summed;
+	skb->csum = info->csum;
+
+out:
+	return skb;
+}
+EXPORT_SYMBOL(napi_fraginfo_skb);
+
+int napi_gro_frags(struct napi_struct *napi, struct napi_gro_fraginfo *info)
+{
+	struct sk_buff *skb = napi_fraginfo_skb(napi, info);
+	int err = NET_RX_DROP;
+
+	if (!skb)
+		goto out;
+
+	if (netpoll_receive_skb(skb))
+		goto out;
+
+	err = NET_RX_SUCCESS;
+
+	switch (__napi_gro_receive(napi, skb)) {
+	case -1:
+		return netif_receive_skb(skb);
+
+	case 0:
+		goto out;
+	}
+
+	napi_reuse_skb(napi, skb);
+
+out:
+	return err;
+}
+EXPORT_SYMBOL(napi_gro_frags);
+
+static int process_backlog(struct napi_struct *napi, int quota)
+{
+	int work = 0;
+	struct softnet_data *queue = &__get_cpu_var(softnet_data);
+	unsigned long start_time = jiffies;
+
+	napi->weight = weight_p;
+	do {
+		struct sk_buff *skb;
+
+		local_irq_disable();
+		skb = __skb_dequeue(&queue->input_pkt_queue);
+		if (!skb) {
+			local_irq_enable();
+			napi_complete(napi);
+			goto out;
+		}
+		local_irq_enable();
+
+		napi_gro_receive(napi, skb);
+	} while (++work < quota && jiffies == start_time);
+
+	napi_gro_flush(napi);
+
+out:
+	return work;
+}
+
+/**
+ * __napi_schedule - schedule for receive
+ * @n: entry to schedule
+ *
+ * The entry's receive function will be scheduled to run
+ */
+void __napi_schedule(struct napi_struct *n)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	list_add_tail(&n->poll_list, &__get_cpu_var(softnet_data).poll_list);
+	__raise_softirq_irqoff(NET_RX_SOFTIRQ);
+	local_irq_restore(flags);
+}
+EXPORT_SYMBOL(__napi_schedule);
+
+void __napi_complete(struct napi_struct *n)
+{
+	BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
+	BUG_ON(n->gro_list);
+
+	list_del(&n->poll_list);
+	smp_mb__before_clear_bit();
+	clear_bit(NAPI_STATE_SCHED, &n->state);
+}
+EXPORT_SYMBOL(__napi_complete);
+
+void napi_complete(struct napi_struct *n)
+{
+	unsigned long flags;
+
+	/*
+	 * don't let napi dequeue from the cpu poll list
+	 * just in case its running on a different cpu
+	 */
+	if (unlikely(test_bit(NAPI_STATE_NPSVC, &n->state)))
+		return;
+
+	napi_gro_flush(n);
+	local_irq_save(flags);
+	__napi_complete(n);
+	local_irq_restore(flags);
+}
+EXPORT_SYMBOL(napi_complete);
+
+void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
+		    int (*poll)(struct napi_struct *, int), int weight)
+{
+	INIT_LIST_HEAD(&napi->poll_list);
+	napi->gro_list = NULL;
+	napi->skb = NULL;
+	napi->poll = poll;
+	napi->weight = weight;
+	list_add(&napi->dev_list, &dev->napi_list);
+	napi->dev = dev;
+#ifdef CONFIG_NETPOLL
+	spin_lock_init(&napi->poll_lock);
+	napi->poll_owner = -1;
+#endif
+	set_bit(NAPI_STATE_SCHED, &napi->state);
+}
+EXPORT_SYMBOL(netif_napi_add);
+
+void netif_napi_del(struct napi_struct *napi)
+{
+	struct sk_buff *skb, *next;
+
+	list_del_init(&napi->dev_list);
+	kfree_skb(napi->skb);
+
+	for (skb = napi->gro_list; skb; skb = next) {
+		next = skb->next;
+		skb->next = NULL;
+		kfree_skb(skb);
+	}
+
+	napi->gro_list = NULL;
+}
+EXPORT_SYMBOL(netif_napi_del);
+
+
+static void net_rx_action(struct softirq_action *h)
+{
+	struct list_head *list = &__get_cpu_var(softnet_data).poll_list;
+	unsigned long time_limit = jiffies + 2;
+	int budget = netdev_budget;
+	void *have;
+
+	local_irq_disable();
+
+	while (!list_empty(list)) {
+		struct napi_struct *n;
+		int work, weight;
+
+		/* If softirq window is exhuasted then punt.
+		 * Allow this to run for 2 jiffies since which will allow
+		 * an average latency of 1.5/HZ.
+		 */
+		if (unlikely(budget <= 0 || time_after(jiffies, time_limit)))
+			goto softnet_break;
+
+		local_irq_enable();
+
+		/* Even though interrupts have been re-enabled, this
+		 * access is safe because interrupts can only add new
+		 * entries to the tail of this list, and only ->poll()
+		 * calls can remove this head entry from the list.
+		 */
+		n = list_entry(list->next, struct napi_struct, poll_list);
+
+		have = netpoll_poll_lock(n);
+
+		weight = n->weight;
+
+		/* This NAPI_STATE_SCHED test is for avoiding a race
+		 * with netpoll's poll_napi().  Only the entity which
+		 * obtains the lock and sees NAPI_STATE_SCHED set will
+		 * actually make the ->poll() call.  Therefore we avoid
+		 * accidently calling ->poll() when NAPI is not scheduled.
+		 */
+		work = 0;
+		if (test_bit(NAPI_STATE_SCHED, &n->state))
+			work = n->poll(n, weight);
+
+		WARN_ON_ONCE(work > weight);
+
+		budget -= work;
+
+		local_irq_disable();
+
+		/* Drivers must not modify the NAPI state if they
+		 * consume the entire weight.  In such cases this code
+		 * still "owns" the NAPI instance and therefore can
+		 * move the instance around on the list at-will.
+		 */
+		if (unlikely(work == weight)) {
+			if (unlikely(napi_disable_pending(n)))
+				__napi_complete(n);
+			else
+				list_move_tail(&n->poll_list, list);
+		}
+
+		netpoll_poll_unlock(have);
+	}
+out:
+	local_irq_enable();
+
+#ifdef CONFIG_NET_DMA
+	/*
+	 * There may not be any more sk_buffs coming right now, so push
+	 * any pending DMA copies to hardware
+	 */
+	dma_issue_pending_all();
+#endif
+
+	return;
+
+softnet_break:
+	__get_cpu_var(netdev_rx_stat).time_squeeze++;
+	__raise_softirq_irqoff(NET_RX_SOFTIRQ);
+	goto out;
+}
+
+static gifconf_func_t * gifconf_list [NPROTO];
+
+/**
+ *	register_gifconf	-	register a SIOCGIF handler
+ *	@family: Address family
+ *	@gifconf: Function handler
+ *
+ *	Register protocol dependent address dumping routines. The handler
+ *	that is passed must not be freed or reused until it has been replaced
+ *	by another handler.
+ */
+int register_gifconf(unsigned int family, gifconf_func_t * gifconf)
+{
+	if (family >= NPROTO)
+		return -EINVAL;
+	gifconf_list[family] = gifconf;
+	return 0;
+}
+
+
+/*
+ *	Map an interface index to its name (SIOCGIFNAME)
+ */
+
+/*
+ *	We need this ioctl for efficient implementation of the
+ *	if_indextoname() function required by the IPv6 API.  Without
+ *	it, we would have to search all the interfaces to find a
+ *	match.  --pb
+ */
+
+static int dev_ifname(struct net *net, struct ifreq __user *arg)
+{
+	struct net_device *dev;
+	struct ifreq ifr;
+
+	/*
+	 *	Fetch the caller's info block.
+	 */
+
+	if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
+		return -EFAULT;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_index(net, ifr.ifr_ifindex);
+	if (!dev) {
+		read_unlock(&dev_base_lock);
+		return -ENODEV;
+	}
+
+	strcpy(ifr.ifr_name, dev->name);
+	read_unlock(&dev_base_lock);
+
+	if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
+		return -EFAULT;
+	return 0;
+}
+
+/*
+ *	Perform a SIOCGIFCONF call. This structure will change
+ *	size eventually, and there is nothing I can do about it.
+ *	Thus we will need a 'compatibility mode'.
+ */
+
+static int dev_ifconf(struct net *net, char __user *arg)
+{
+	struct ifconf ifc;
+	struct net_device *dev;
+	char __user *pos;
+	int len;
+	int total;
+	int i;
+
+	/*
+	 *	Fetch the caller's info block.
+	 */
+
+	if (copy_from_user(&ifc, arg, sizeof(struct ifconf)))
+		return -EFAULT;
+
+	pos = ifc.ifc_buf;
+	len = ifc.ifc_len;
+
+	/*
+	 *	Loop over the interfaces, and write an info block for each.
+	 */
+
+	total = 0;
+	for_each_netdev(net, dev) {
+		for (i = 0; i < NPROTO; i++) {
+			if (gifconf_list[i]) {
+				int done;
+				if (!pos)
+					done = gifconf_list[i](dev, NULL, 0);
+				else
+					done = gifconf_list[i](dev, pos + total,
+							       len - total);
+				if (done < 0)
+					return -EFAULT;
+				total += done;
+			}
+		}
+	}
+
+	/*
+	 *	All done.  Write the updated control block back to the caller.
+	 */
+	ifc.ifc_len = total;
+
+	/*
+	 * 	Both BSD and Solaris return 0 here, so we do too.
+	 */
+	return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0;
+}
+
+#ifdef CONFIG_PROC_FS
+/*
+ *	This is invoked by the /proc filesystem handler to display a device
+ *	in detail.
+ */
+void *dev_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(dev_base_lock)
+{
+	struct net *net = seq_file_net(seq);
+	loff_t off;
+	struct net_device *dev;
+
+	read_lock(&dev_base_lock);
+	if (!*pos)
+		return SEQ_START_TOKEN;
+
+	off = 1;
+	for_each_netdev(net, dev)
+		if (off++ == *pos)
+			return dev;
+
+	return NULL;
+}
+
+void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct net *net = seq_file_net(seq);
+	++*pos;
+	return v == SEQ_START_TOKEN ?
+		first_net_device(net) : next_net_device((struct net_device *)v);
+}
+
+void dev_seq_stop(struct seq_file *seq, void *v)
+	__releases(dev_base_lock)
+{
+	read_unlock(&dev_base_lock);
+}
+
+static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
+{
+	const struct net_device_stats *stats = dev_get_stats(dev);
+
+	seq_printf(seq, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
+		   "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
+		   dev->name, stats->rx_bytes, stats->rx_packets,
+		   stats->rx_errors,
+		   stats->rx_dropped + stats->rx_missed_errors,
+		   stats->rx_fifo_errors,
+		   stats->rx_length_errors + stats->rx_over_errors +
+		    stats->rx_crc_errors + stats->rx_frame_errors,
+		   stats->rx_compressed, stats->multicast,
+		   stats->tx_bytes, stats->tx_packets,
+		   stats->tx_errors, stats->tx_dropped,
+		   stats->tx_fifo_errors, stats->collisions,
+		   stats->tx_carrier_errors +
+		    stats->tx_aborted_errors +
+		    stats->tx_window_errors +
+		    stats->tx_heartbeat_errors,
+		   stats->tx_compressed);
+}
+
+/*
+ *	Called from the PROCfs module. This now uses the new arbitrary sized
+ *	/proc/net interface to create /proc/net/dev
+ */
+static int dev_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == SEQ_START_TOKEN)
+		seq_puts(seq, "Inter-|   Receive                            "
+			      "                    |  Transmit\n"
+			      " face |bytes    packets errs drop fifo frame "
+			      "compressed multicast|bytes    packets errs "
+			      "drop fifo colls carrier compressed\n");
+	else
+		dev_seq_printf_stats(seq, v);
+	return 0;
+}
+
+static struct netif_rx_stats *softnet_get_online(loff_t *pos)
+{
+	struct netif_rx_stats *rc = NULL;
+
+	while (*pos < nr_cpu_ids)
+		if (cpu_online(*pos)) {
+			rc = &per_cpu(netdev_rx_stat, *pos);
+			break;
+		} else
+			++*pos;
+	return rc;
+}
+
+static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	return softnet_get_online(pos);
+}
+
+static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	return softnet_get_online(pos);
+}
+
+static void softnet_seq_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int softnet_seq_show(struct seq_file *seq, void *v)
+{
+	struct netif_rx_stats *s = v;
+
+	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+		   s->total, s->dropped, s->time_squeeze, 0,
+		   0, 0, 0, 0, /* was fastroute */
+		   s->cpu_collision );
+	return 0;
+}
+
+static const struct seq_operations dev_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = dev_seq_show,
+};
+
+static int dev_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &dev_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations dev_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = dev_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+static const struct seq_operations softnet_seq_ops = {
+	.start = softnet_seq_start,
+	.next  = softnet_seq_next,
+	.stop  = softnet_seq_stop,
+	.show  = softnet_seq_show,
+};
+
+static int softnet_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &softnet_seq_ops);
+}
+
+static const struct file_operations softnet_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = softnet_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
+
+static void *ptype_get_idx(loff_t pos)
+{
+	struct packet_type *pt = NULL;
+	loff_t i = 0;
+	int t;
+
+	list_for_each_entry_rcu(pt, &ptype_all, list) {
+		if (i == pos)
+			return pt;
+		++i;
+	}
+
+	for (t = 0; t < PTYPE_HASH_SIZE; t++) {
+		list_for_each_entry_rcu(pt, &ptype_base[t], list) {
+			if (i == pos)
+				return pt;
+			++i;
+		}
+	}
+	return NULL;
+}
+
+static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(RCU)
+{
+	rcu_read_lock();
+	return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
+}
+
+static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct packet_type *pt;
+	struct list_head *nxt;
+	int hash;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN)
+		return ptype_get_idx(0);
+
+	pt = v;
+	nxt = pt->list.next;
+	if (pt->type == htons(ETH_P_ALL)) {
+		if (nxt != &ptype_all)
+			goto found;
+		hash = 0;
+		nxt = ptype_base[0].next;
+	} else
+		hash = ntohs(pt->type) & PTYPE_HASH_MASK;
+
+	while (nxt == &ptype_base[hash]) {
+		if (++hash >= PTYPE_HASH_SIZE)
+			return NULL;
+		nxt = ptype_base[hash].next;
+	}
+found:
+	return list_entry(nxt, struct packet_type, list);
+}
+
+static void ptype_seq_stop(struct seq_file *seq, void *v)
+	__releases(RCU)
+{
+	rcu_read_unlock();
+}
+
+static int ptype_seq_show(struct seq_file *seq, void *v)
+{
+	struct packet_type *pt = v;
+
+	if (v == SEQ_START_TOKEN)
+		seq_puts(seq, "Type Device      Function\n");
+	else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
+		if (pt->type == htons(ETH_P_ALL))
+			seq_puts(seq, "ALL ");
+		else
+			seq_printf(seq, "%04x", ntohs(pt->type));
+
+		seq_printf(seq, " %-8s %pF\n",
+			   pt->dev ? pt->dev->name : "", pt->func);
+	}
+
+	return 0;
+}
+
+static const struct seq_operations ptype_seq_ops = {
+	.start = ptype_seq_start,
+	.next  = ptype_seq_next,
+	.stop  = ptype_seq_stop,
+	.show  = ptype_seq_show,
+};
+
+static int ptype_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &ptype_seq_ops,
+			sizeof(struct seq_net_private));
+}
+
+static const struct file_operations ptype_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = ptype_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+
+static int __net_init dev_proc_net_init(struct net *net)
+{
+	int rc = -ENOMEM;
+
+	if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
+		goto out;
+	if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
+		goto out_dev;
+	if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
+		goto out_softnet;
+
+	if (wext_proc_init(net))
+		goto out_ptype;
+	rc = 0;
+out:
+	return rc;
+out_ptype:
+	proc_net_remove(net, "ptype");
+out_softnet:
+	proc_net_remove(net, "softnet_stat");
+out_dev:
+	proc_net_remove(net, "dev");
+	goto out;
+}
+
+static void __net_exit dev_proc_net_exit(struct net *net)
+{
+	wext_proc_exit(net);
+
+	proc_net_remove(net, "ptype");
+	proc_net_remove(net, "softnet_stat");
+	proc_net_remove(net, "dev");
+}
+
+static struct pernet_operations __net_initdata dev_proc_ops = {
+	.init = dev_proc_net_init,
+	.exit = dev_proc_net_exit,
+};
+
+static int __init dev_proc_init(void)
+{
+	return register_pernet_subsys(&dev_proc_ops);
+}
+#else
+#define dev_proc_init() 0
+#endif	/* CONFIG_PROC_FS */
+
+
+/**
+ *	netdev_set_master	-	set up master/slave pair
+ *	@slave: slave device
+ *	@master: new master device
+ *
+ *	Changes the master device of the slave. Pass %NULL to break the
+ *	bonding. The caller must hold the RTNL semaphore. On a failure
+ *	a negative errno code is returned. On success the reference counts
+ *	are adjusted, %RTM_NEWLINK is sent to the routing socket and the
+ *	function returns zero.
+ */
+int netdev_set_master(struct net_device *slave, struct net_device *master)
+{
+	struct net_device *old = slave->master;
+
+	ASSERT_RTNL();
+
+	if (master) {
+		if (old)
+			return -EBUSY;
+		dev_hold(master);
+	}
+
+	slave->master = master;
+
+	synchronize_net();
+
+	if (old)
+		dev_put(old);
+
+	if (master)
+		slave->flags |= IFF_SLAVE;
+	else
+		slave->flags &= ~IFF_SLAVE;
+
+	rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE);
+	return 0;
+}
+
+static void dev_change_rx_flags(struct net_device *dev, int flags)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	if ((dev->flags & IFF_UP) && ops->ndo_change_rx_flags)
+		ops->ndo_change_rx_flags(dev, flags);
+}
+
+static int __dev_set_promiscuity(struct net_device *dev, int inc)
+{
+	unsigned short old_flags = dev->flags;
+	uid_t uid;
+	gid_t gid;
+
+	ASSERT_RTNL();
+
+	dev->flags |= IFF_PROMISC;
+	dev->promiscuity += inc;
+	if (dev->promiscuity == 0) {
+		/*
+		 * Avoid overflow.
+		 * If inc causes overflow, untouch promisc and return error.
+		 */
+		if (inc < 0)
+			dev->flags &= ~IFF_PROMISC;
+		else {
+			dev->promiscuity -= inc;
+			printk(KERN_WARNING "%s: promiscuity touches roof, "
+				"set promiscuity failed, promiscuity feature "
+				"of device might be broken.\n", dev->name);
+			return -EOVERFLOW;
+		}
+	}
+	if (dev->flags != old_flags) {
+		printk(KERN_INFO "device %s %s promiscuous mode\n",
+		       dev->name, (dev->flags & IFF_PROMISC) ? "entered" :
+							       "left");
+		if (audit_enabled) {
+			current_uid_gid(&uid, &gid);
+			audit_log(current->audit_context, GFP_ATOMIC,
+				AUDIT_ANOM_PROMISCUOUS,
+				"dev=%s prom=%d old_prom=%d auid=%u uid=%u gid=%u ses=%u",
+				dev->name, (dev->flags & IFF_PROMISC),
+				(old_flags & IFF_PROMISC),
+				audit_get_loginuid(current),
+				uid, gid,
+				audit_get_sessionid(current));
+		}
+
+		dev_change_rx_flags(dev, IFF_PROMISC);
+	}
+	return 0;
+}
+
+/**
+ *	dev_set_promiscuity	- update promiscuity count on a device
+ *	@dev: device
+ *	@inc: modifier
+ *
+ *	Add or remove promiscuity from a device. While the count in the device
+ *	remains above zero the interface remains promiscuous. Once it hits zero
+ *	the device reverts back to normal filtering operation. A negative inc
+ *	value is used to drop promiscuity on the device.
+ *	Return 0 if successful or a negative errno code on error.
+ */
+int dev_set_promiscuity(struct net_device *dev, int inc)
+{
+	unsigned short old_flags = dev->flags;
+	int err;
+
+	err = __dev_set_promiscuity(dev, inc);
+	if (err < 0)
+		return err;
+	if (dev->flags != old_flags)
+		dev_set_rx_mode(dev);
+	return err;
+}
+
+/**
+ *	dev_set_allmulti	- update allmulti count on a device
+ *	@dev: device
+ *	@inc: modifier
+ *
+ *	Add or remove reception of all multicast frames to a device. While the
+ *	count in the device remains above zero the interface remains listening
+ *	to all interfaces. Once it hits zero the device reverts back to normal
+ *	filtering operation. A negative @inc value is used to drop the counter
+ *	when releasing a resource needing all multicasts.
+ *	Return 0 if successful or a negative errno code on error.
+ */
+
+int dev_set_allmulti(struct net_device *dev, int inc)
+{
+	unsigned short old_flags = dev->flags;
+
+	ASSERT_RTNL();
+
+	dev->flags |= IFF_ALLMULTI;
+	dev->allmulti += inc;
+	if (dev->allmulti == 0) {
+		/*
+		 * Avoid overflow.
+		 * If inc causes overflow, untouch allmulti and return error.
+		 */
+		if (inc < 0)
+			dev->flags &= ~IFF_ALLMULTI;
+		else {
+			dev->allmulti -= inc;
+			printk(KERN_WARNING "%s: allmulti touches roof, "
+				"set allmulti failed, allmulti feature of "
+				"device might be broken.\n", dev->name);
+			return -EOVERFLOW;
+		}
+	}
+	if (dev->flags ^ old_flags) {
+		dev_change_rx_flags(dev, IFF_ALLMULTI);
+		dev_set_rx_mode(dev);
+	}
+	return 0;
+}
+
+/*
+ *	Upload unicast and multicast address lists to device and
+ *	configure RX filtering. When the device doesn't support unicast
+ *	filtering it is put in promiscuous mode while unicast addresses
+ *	are present.
+ */
+void __dev_set_rx_mode(struct net_device *dev)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	/* dev_open will call this function so the list will stay sane. */
+	if (!(dev->flags&IFF_UP))
+		return;
+
+	if (!netif_device_present(dev))
+		return;
+
+	if (ops->ndo_set_rx_mode)
+		ops->ndo_set_rx_mode(dev);
+	else {
+		/* Unicast addresses changes may only happen under the rtnl,
+		 * therefore calling __dev_set_promiscuity here is safe.
+		 */
+		if (dev->uc_count > 0 && !dev->uc_promisc) {
+			__dev_set_promiscuity(dev, 1);
+			dev->uc_promisc = 1;
+		} else if (dev->uc_count == 0 && dev->uc_promisc) {
+			__dev_set_promiscuity(dev, -1);
+			dev->uc_promisc = 0;
+		}
+
+		if (ops->ndo_set_multicast_list)
+			ops->ndo_set_multicast_list(dev);
+	}
+}
+
+void dev_set_rx_mode(struct net_device *dev)
+{
+	netif_addr_lock_bh(dev);
+	__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+}
+
+int __dev_addr_delete(struct dev_addr_list **list, int *count,
+		      void *addr, int alen, int glbl)
+{
+	struct dev_addr_list *da;
+
+	for (; (da = *list) != NULL; list = &da->next) {
+		if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+		    alen == da->da_addrlen) {
+			if (glbl) {
+				int old_glbl = da->da_gusers;
+				da->da_gusers = 0;
+				if (old_glbl == 0)
+					break;
+			}
+			if (--da->da_users)
+				return 0;
+
+			*list = da->next;
+			kfree(da);
+			(*count)--;
+			return 0;
+		}
+	}
+	return -ENOENT;
+}
+
+int __dev_addr_add(struct dev_addr_list **list, int *count,
+		   void *addr, int alen, int glbl)
+{
+	struct dev_addr_list *da;
+
+	for (da = *list; da != NULL; da = da->next) {
+		if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+		    da->da_addrlen == alen) {
+			if (glbl) {
+				int old_glbl = da->da_gusers;
+				da->da_gusers = 1;
+				if (old_glbl)
+					return 0;
+			}
+			da->da_users++;
+			return 0;
+		}
+	}
+
+	da = kzalloc(sizeof(*da), GFP_ATOMIC);
+	if (da == NULL)
+		return -ENOMEM;
+	memcpy(da->da_addr, addr, alen);
+	da->da_addrlen = alen;
+	da->da_users = 1;
+	da->da_gusers = glbl ? 1 : 0;
+	da->next = *list;
+	*list = da;
+	(*count)++;
+	return 0;
+}
+
+/**
+ *	dev_unicast_delete	- Release secondary unicast address.
+ *	@dev: device
+ *	@addr: address to delete
+ *	@alen: length of @addr
+ *
+ *	Release reference to a secondary unicast address and remove it
+ *	from the device if the reference count drops to zero.
+ *
+ * 	The caller must hold the rtnl_mutex.
+ */
+int dev_unicast_delete(struct net_device *dev, void *addr, int alen)
+{
+	int err;
+
+	ASSERT_RTNL();
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
+	if (!err)
+		__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+EXPORT_SYMBOL(dev_unicast_delete);
+
+/**
+ *	dev_unicast_add		- add a secondary unicast address
+ *	@dev: device
+ *	@addr: address to add
+ *	@alen: length of @addr
+ *
+ *	Add a secondary unicast address to the device or increase
+ *	the reference count if it already exists.
+ *
+ *	The caller must hold the rtnl_mutex.
+ */
+int dev_unicast_add(struct net_device *dev, void *addr, int alen)
+{
+	int err;
+
+	ASSERT_RTNL();
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
+	if (!err)
+		__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+EXPORT_SYMBOL(dev_unicast_add);
+
+int __dev_addr_sync(struct dev_addr_list **to, int *to_count,
+		    struct dev_addr_list **from, int *from_count)
+{
+	struct dev_addr_list *da, *next;
+	int err = 0;
+
+	da = *from;
+	while (da != NULL) {
+		next = da->next;
+		if (!da->da_synced) {
+			err = __dev_addr_add(to, to_count,
+					     da->da_addr, da->da_addrlen, 0);
+			if (err < 0)
+				break;
+			da->da_synced = 1;
+			da->da_users++;
+		} else if (da->da_users == 1) {
+			__dev_addr_delete(to, to_count,
+					  da->da_addr, da->da_addrlen, 0);
+			__dev_addr_delete(from, from_count,
+					  da->da_addr, da->da_addrlen, 0);
+		}
+		da = next;
+	}
+	return err;
+}
+
+void __dev_addr_unsync(struct dev_addr_list **to, int *to_count,
+		       struct dev_addr_list **from, int *from_count)
+{
+	struct dev_addr_list *da, *next;
+
+	da = *from;
+	while (da != NULL) {
+		next = da->next;
+		if (da->da_synced) {
+			__dev_addr_delete(to, to_count,
+					  da->da_addr, da->da_addrlen, 0);
+			da->da_synced = 0;
+			__dev_addr_delete(from, from_count,
+					  da->da_addr, da->da_addrlen, 0);
+		}
+		da = next;
+	}
+}
+
+/**
+ *	dev_unicast_sync - Synchronize device's unicast list to another device
+ *	@to: destination device
+ *	@from: source device
+ *
+ *	Add newly added addresses to the destination device and release
+ *	addresses that have no users left. The source device must be
+ *	locked by netif_tx_lock_bh.
+ *
+ *	This function is intended to be called from the dev->set_rx_mode
+ *	function of layered software devices.
+ */
+int dev_unicast_sync(struct net_device *to, struct net_device *from)
+{
+	int err = 0;
+
+	netif_addr_lock_bh(to);
+	err = __dev_addr_sync(&to->uc_list, &to->uc_count,
+			      &from->uc_list, &from->uc_count);
+	if (!err)
+		__dev_set_rx_mode(to);
+	netif_addr_unlock_bh(to);
+	return err;
+}
+EXPORT_SYMBOL(dev_unicast_sync);
+
+/**
+ *	dev_unicast_unsync - Remove synchronized addresses from the destination device
+ *	@to: destination device
+ *	@from: source device
+ *
+ *	Remove all addresses that were added to the destination device by
+ *	dev_unicast_sync(). This function is intended to be called from the
+ *	dev->stop function of layered software devices.
+ */
+void dev_unicast_unsync(struct net_device *to, struct net_device *from)
+{
+	netif_addr_lock_bh(from);
+	netif_addr_lock(to);
+
+	__dev_addr_unsync(&to->uc_list, &to->uc_count,
+			  &from->uc_list, &from->uc_count);
+	__dev_set_rx_mode(to);
+
+	netif_addr_unlock(to);
+	netif_addr_unlock_bh(from);
+}
+EXPORT_SYMBOL(dev_unicast_unsync);
+
+static void __dev_addr_discard(struct dev_addr_list **list)
+{
+	struct dev_addr_list *tmp;
+
+	while (*list != NULL) {
+		tmp = *list;
+		*list = tmp->next;
+		if (tmp->da_users > tmp->da_gusers)
+			printk("__dev_addr_discard: address leakage! "
+			       "da_users=%d\n", tmp->da_users);
+		kfree(tmp);
+	}
+}
+
+static void dev_addr_discard(struct net_device *dev)
+{
+	netif_addr_lock_bh(dev);
+
+	__dev_addr_discard(&dev->uc_list);
+	dev->uc_count = 0;
+
+	__dev_addr_discard(&dev->mc_list);
+	dev->mc_count = 0;
+
+	netif_addr_unlock_bh(dev);
+}
+
+/**
+ *	dev_get_flags - get flags reported to userspace
+ *	@dev: device
+ *
+ *	Get the combination of flag bits exported through APIs to userspace.
+ */
+unsigned dev_get_flags(const struct net_device *dev)
+{
+	unsigned flags;
+
+	flags = (dev->flags & ~(IFF_PROMISC |
+				IFF_ALLMULTI |
+				IFF_RUNNING |
+				IFF_LOWER_UP |
+				IFF_DORMANT)) |
+		(dev->gflags & (IFF_PROMISC |
+				IFF_ALLMULTI));
+
+	if (netif_running(dev)) {
+		if (netif_oper_up(dev))
+			flags |= IFF_RUNNING;
+		if (netif_carrier_ok(dev))
+			flags |= IFF_LOWER_UP;
+		if (netif_dormant(dev))
+			flags |= IFF_DORMANT;
+	}
+
+	return flags;
+}
+
+/**
+ *	dev_change_flags - change device settings
+ *	@dev: device
+ *	@flags: device state flags
+ *
+ *	Change settings on device based state flags. The flags are
+ *	in the userspace exported format.
+ */
+int dev_change_flags(struct net_device *dev, unsigned flags)
+{
+	int ret, changes;
+	int old_flags = dev->flags;
+
+	ASSERT_RTNL();
+
+	/*
+	 *	Set the flags on our device.
+	 */
+
+	dev->flags = (flags & (IFF_DEBUG | IFF_NOTRAILERS | IFF_NOARP |
+			       IFF_DYNAMIC | IFF_MULTICAST | IFF_PORTSEL |
+			       IFF_AUTOMEDIA)) |
+		     (dev->flags & (IFF_UP | IFF_VOLATILE | IFF_PROMISC |
+				    IFF_ALLMULTI));
+
+	/*
+	 *	Load in the correct multicast list now the flags have changed.
+	 */
+
+	if ((old_flags ^ flags) & IFF_MULTICAST)
+		dev_change_rx_flags(dev, IFF_MULTICAST);
+
+	dev_set_rx_mode(dev);
+
+	/*
+	 *	Have we downed the interface. We handle IFF_UP ourselves
+	 *	according to user attempts to set it, rather than blindly
+	 *	setting it.
+	 */
+
+	ret = 0;
+	if ((old_flags ^ flags) & IFF_UP) {	/* Bit is different  ? */
+		ret = ((old_flags & IFF_UP) ? dev_close : dev_open)(dev);
+
+		if (!ret)
+			dev_set_rx_mode(dev);
+	}
+
+	if (dev->flags & IFF_UP &&
+	    ((old_flags ^ dev->flags) &~ (IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
+					  IFF_VOLATILE)))
+		call_netdevice_notifiers(NETDEV_CHANGE, dev);
+
+	if ((flags ^ dev->gflags) & IFF_PROMISC) {
+		int inc = (flags & IFF_PROMISC) ? +1 : -1;
+		dev->gflags ^= IFF_PROMISC;
+		dev_set_promiscuity(dev, inc);
+	}
+
+	/* NOTE: order of synchronization of IFF_PROMISC and IFF_ALLMULTI
+	   is important. Some (broken) drivers set IFF_PROMISC, when
+	   IFF_ALLMULTI is requested not asking us and not reporting.
+	 */
+	if ((flags ^ dev->gflags) & IFF_ALLMULTI) {
+		int inc = (flags & IFF_ALLMULTI) ? +1 : -1;
+		dev->gflags ^= IFF_ALLMULTI;
+		dev_set_allmulti(dev, inc);
+	}
+
+	/* Exclude state transition flags, already notified */
+	changes = (old_flags ^ dev->flags) & ~(IFF_UP | IFF_RUNNING);
+	if (changes)
+		rtmsg_ifinfo(RTM_NEWLINK, dev, changes);
+
+	return ret;
+}
+
+/**
+ *	dev_set_mtu - Change maximum transfer unit
+ *	@dev: device
+ *	@new_mtu: new transfer unit
+ *
+ *	Change the maximum transfer size of the network device.
+ */
+int dev_set_mtu(struct net_device *dev, int new_mtu)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int err;
+
+	if (new_mtu == dev->mtu)
+		return 0;
+
+	/*	MTU must be positive.	 */
+	if (new_mtu < 0)
+		return -EINVAL;
+
+	if (!netif_device_present(dev))
+		return -ENODEV;
+
+	err = 0;
+	if (ops->ndo_change_mtu)
+		err = ops->ndo_change_mtu(dev, new_mtu);
+	else
+		dev->mtu = new_mtu;
+
+	if (!err && dev->flags & IFF_UP)
+		call_netdevice_notifiers(NETDEV_CHANGEMTU, dev);
+	return err;
+}
+
+/**
+ *	dev_set_mac_address - Change Media Access Control Address
+ *	@dev: device
+ *	@sa: new address
+ *
+ *	Change the hardware (MAC) address of the device
+ */
+int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int err;
+
+	if (!ops->ndo_set_mac_address)
+		return -EOPNOTSUPP;
+	if (sa->sa_family != dev->type)
+		return -EINVAL;
+	if (!netif_device_present(dev))
+		return -ENODEV;
+	err = ops->ndo_set_mac_address(dev, sa);
+	if (!err)
+		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+	return err;
+}
+
+/*
+ *	Perform the SIOCxIFxxx calls, inside read_lock(dev_base_lock)
+ */
+static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cmd)
+{
+	int err;
+	struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
+
+	if (!dev)
+		return -ENODEV;
+
+	switch (cmd) {
+		case SIOCGIFFLAGS:	/* Get interface flags */
+			ifr->ifr_flags = dev_get_flags(dev);
+			return 0;
+
+		case SIOCGIFMETRIC:	/* Get the metric on the interface
+					   (currently unused) */
+			ifr->ifr_metric = 0;
+			return 0;
+
+		case SIOCGIFMTU:	/* Get the MTU of a device */
+			ifr->ifr_mtu = dev->mtu;
+			return 0;
+
+		case SIOCGIFHWADDR:
+			if (!dev->addr_len)
+				memset(ifr->ifr_hwaddr.sa_data, 0, sizeof ifr->ifr_hwaddr.sa_data);
+			else
+				memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr,
+				       min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
+			ifr->ifr_hwaddr.sa_family = dev->type;
+			return 0;
+
+		case SIOCGIFSLAVE:
+			err = -EINVAL;
+			break;
+
+		case SIOCGIFMAP:
+			ifr->ifr_map.mem_start = dev->mem_start;
+			ifr->ifr_map.mem_end   = dev->mem_end;
+			ifr->ifr_map.base_addr = dev->base_addr;
+			ifr->ifr_map.irq       = dev->irq;
+			ifr->ifr_map.dma       = dev->dma;
+			ifr->ifr_map.port      = dev->if_port;
+			return 0;
+
+		case SIOCGIFINDEX:
+			ifr->ifr_ifindex = dev->ifindex;
+			return 0;
+
+		case SIOCGIFTXQLEN:
+			ifr->ifr_qlen = dev->tx_queue_len;
+			return 0;
+
+		default:
+			/* dev_ioctl() should ensure this case
+			 * is never reached
+			 */
+			WARN_ON(1);
+			err = -EINVAL;
+			break;
+
+	}
+	return err;
+}
+
+/*
+ *	Perform the SIOCxIFxxx calls, inside rtnl_lock()
+ */
+static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
+{
+	int err;
+	struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
+	const struct net_device_ops *ops;
+
+	if (!dev)
+		return -ENODEV;
+
+	ops = dev->netdev_ops;
+
+	switch (cmd) {
+		case SIOCSIFFLAGS:	/* Set interface flags */
+			return dev_change_flags(dev, ifr->ifr_flags);
+
+		case SIOCSIFMETRIC:	/* Set the metric on the interface
+					   (currently unused) */
+			return -EOPNOTSUPP;
+
+		case SIOCSIFMTU:	/* Set the MTU of a device */
+			return dev_set_mtu(dev, ifr->ifr_mtu);
+
+		case SIOCSIFHWADDR:
+			return dev_set_mac_address(dev, &ifr->ifr_hwaddr);
+
+		case SIOCSIFHWBROADCAST:
+			if (ifr->ifr_hwaddr.sa_family != dev->type)
+				return -EINVAL;
+			memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
+			       min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
+			call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+			return 0;
+
+		case SIOCSIFMAP:
+			if (ops->ndo_set_config) {
+				if (!netif_device_present(dev))
+					return -ENODEV;
+				return ops->ndo_set_config(dev, &ifr->ifr_map);
+			}
+			return -EOPNOTSUPP;
+
+		case SIOCADDMULTI:
+			if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+			    ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
+				return -EINVAL;
+			if (!netif_device_present(dev))
+				return -ENODEV;
+			return dev_mc_add(dev, ifr->ifr_hwaddr.sa_data,
+					  dev->addr_len, 1);
+
+		case SIOCDELMULTI:
+			if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+			    ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
+				return -EINVAL;
+			if (!netif_device_present(dev))
+				return -ENODEV;
+			return dev_mc_delete(dev, ifr->ifr_hwaddr.sa_data,
+					     dev->addr_len, 1);
+
+		case SIOCSIFTXQLEN:
+			if (ifr->ifr_qlen < 0)
+				return -EINVAL;
+			dev->tx_queue_len = ifr->ifr_qlen;
+			return 0;
+
+		case SIOCSIFNAME:
+			ifr->ifr_newname[IFNAMSIZ-1] = '\0';
+			return dev_change_name(dev, ifr->ifr_newname);
+
+		/*
+		 *	Unknown or private ioctl
+		 */
+
+		default:
+			if ((cmd >= SIOCDEVPRIVATE &&
+			    cmd <= SIOCDEVPRIVATE + 15) ||
+			    cmd == SIOCBONDENSLAVE ||
+			    cmd == SIOCBONDRELEASE ||
+			    cmd == SIOCBONDSETHWADDR ||
+			    cmd == SIOCBONDSLAVEINFOQUERY ||
+			    cmd == SIOCBONDINFOQUERY ||
+			    cmd == SIOCBONDCHANGEACTIVE ||
+			    cmd == SIOCGMIIPHY ||
+			    cmd == SIOCGMIIREG ||
+			    cmd == SIOCSMIIREG ||
+			    cmd == SIOCBRADDIF ||
+			    cmd == SIOCBRDELIF ||
+			    cmd == SIOCWANDEV) {
+				err = -EOPNOTSUPP;
+				if (ops->ndo_do_ioctl) {
+					if (netif_device_present(dev))
+						err = ops->ndo_do_ioctl(dev, ifr, cmd);
+					else
+						err = -ENODEV;
+				}
+			} else
+				err = -EINVAL;
+
+	}
+	return err;
+}
+
+/*
+ *	This function handles all "interface"-type I/O control requests. The actual
+ *	'doing' part of this is dev_ifsioc above.
+ */
+
+/**
+ *	dev_ioctl	-	network device ioctl
+ *	@net: the applicable net namespace
+ *	@cmd: command to issue
+ *	@arg: pointer to a struct ifreq in user space
+ *
+ *	Issue ioctl functions to devices. This is normally called by the
+ *	user space syscall interfaces but can sometimes be useful for
+ *	other purposes. The return value is the return from the syscall if
+ *	positive or a negative errno code on error.
+ */
+
+int dev_ioctl(struct net *net, unsigned int cmd, void __user *arg)
+{
+	struct ifreq ifr;
+	int ret;
+	char *colon;
+
+	/* One special case: SIOCGIFCONF takes ifconf argument
+	   and requires shared lock, because it sleeps writing
+	   to user space.
+	 */
+
+	if (cmd == SIOCGIFCONF) {
+		rtnl_lock();
+		ret = dev_ifconf(net, (char __user *) arg);
+		rtnl_unlock();
+		return ret;
+	}
+	if (cmd == SIOCGIFNAME)
+		return dev_ifname(net, (struct ifreq __user *)arg);
+
+	if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
+		return -EFAULT;
+
+	ifr.ifr_name[IFNAMSIZ-1] = 0;
+
+	colon = strchr(ifr.ifr_name, ':');
+	if (colon)
+		*colon = 0;
+
+	/*
+	 *	See which interface the caller is talking about.
+	 */
+
+	switch (cmd) {
+		/*
+		 *	These ioctl calls:
+		 *	- can be done by all.
+		 *	- atomic and do not require locking.
+		 *	- return a value
+		 */
+		case SIOCGIFFLAGS:
+		case SIOCGIFMETRIC:
+		case SIOCGIFMTU:
+		case SIOCGIFHWADDR:
+		case SIOCGIFSLAVE:
+		case SIOCGIFMAP:
+		case SIOCGIFINDEX:
+		case SIOCGIFTXQLEN:
+			dev_load(net, ifr.ifr_name);
+			read_lock(&dev_base_lock);
+			ret = dev_ifsioc_locked(net, &ifr, cmd);
+			read_unlock(&dev_base_lock);
+			if (!ret) {
+				if (colon)
+					*colon = ':';
+				if (copy_to_user(arg, &ifr,
+						 sizeof(struct ifreq)))
+					ret = -EFAULT;
+			}
+			return ret;
+
+		case SIOCETHTOOL:
+			dev_load(net, ifr.ifr_name);
+			rtnl_lock();
+			ret = dev_ethtool(net, &ifr);
+			rtnl_unlock();
+			if (!ret) {
+				if (colon)
+					*colon = ':';
+				if (copy_to_user(arg, &ifr,
+						 sizeof(struct ifreq)))
+					ret = -EFAULT;
+			}
+			return ret;
+
+		/*
+		 *	These ioctl calls:
+		 *	- require superuser power.
+		 *	- require strict serialization.
+		 *	- return a value
+		 */
+		case SIOCGMIIPHY:
+		case SIOCGMIIREG:
+		case SIOCSIFNAME:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			dev_load(net, ifr.ifr_name);
+			rtnl_lock();
+			ret = dev_ifsioc(net, &ifr, cmd);
+			rtnl_unlock();
+			if (!ret) {
+				if (colon)
+					*colon = ':';
+				if (copy_to_user(arg, &ifr,
+						 sizeof(struct ifreq)))
+					ret = -EFAULT;
+			}
+			return ret;
+
+		/*
+		 *	These ioctl calls:
+		 *	- require superuser power.
+		 *	- require strict serialization.
+		 *	- do not return a value
+		 */
+		case SIOCSIFFLAGS:
+		case SIOCSIFMETRIC:
+		case SIOCSIFMTU:
+		case SIOCSIFMAP:
+		case SIOCSIFHWADDR:
+		case SIOCSIFSLAVE:
+		case SIOCADDMULTI:
+		case SIOCDELMULTI:
+		case SIOCSIFHWBROADCAST:
+		case SIOCSIFTXQLEN:
+		case SIOCSMIIREG:
+		case SIOCBONDENSLAVE:
+		case SIOCBONDRELEASE:
+		case SIOCBONDSETHWADDR:
+		case SIOCBONDCHANGEACTIVE:
+		case SIOCBRADDIF:
+		case SIOCBRDELIF:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			/* fall through */
+		case SIOCBONDSLAVEINFOQUERY:
+		case SIOCBONDINFOQUERY:
+			dev_load(net, ifr.ifr_name);
+			rtnl_lock();
+			ret = dev_ifsioc(net, &ifr, cmd);
+			rtnl_unlock();
+			return ret;
+
+		case SIOCGIFMEM:
+			/* Get the per device memory space. We can add this but
+			 * currently do not support it */
+		case SIOCSIFMEM:
+			/* Set the per device memory buffer space.
+			 * Not applicable in our case */
+		case SIOCSIFLINK:
+			return -EINVAL;
+
+		/*
+		 *	Unknown or private ioctl.
+		 */
+		default:
+			if (cmd == SIOCWANDEV ||
+			    (cmd >= SIOCDEVPRIVATE &&
+			     cmd <= SIOCDEVPRIVATE + 15)) {
+				dev_load(net, ifr.ifr_name);
+				rtnl_lock();
+				ret = dev_ifsioc(net, &ifr, cmd);
+				rtnl_unlock();
+				if (!ret && copy_to_user(arg, &ifr,
+							 sizeof(struct ifreq)))
+					ret = -EFAULT;
+				return ret;
+			}
+			/* Take care of Wireless Extensions */
+			if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)
+				return wext_handle_ioctl(net, &ifr, cmd, arg);
+			return -EINVAL;
+	}
+}
+
+
+/**
+ *	dev_new_index	-	allocate an ifindex
+ *	@net: the applicable net namespace
+ *
+ *	Returns a suitable unique value for a new device interface
+ *	number.  The caller must hold the rtnl semaphore or the
+ *	dev_base_lock to be sure it remains unique.
+ */
+static int dev_new_index(struct net *net)
+{
+	static int ifindex;
+	for (;;) {
+		if (++ifindex <= 0)
+			ifindex = 1;
+		if (!__dev_get_by_index(net, ifindex))
+			return ifindex;
+	}
+}
+
+/* Delayed registration/unregisteration */
+static LIST_HEAD(net_todo_list);
+
+static void net_set_todo(struct net_device *dev)
+{
+	list_add_tail(&dev->todo_list, &net_todo_list);
+}
+
+static void rollback_registered(struct net_device *dev)
+{
+	BUG_ON(dev_boot_phase);
+	ASSERT_RTNL();
+
+	/* Some devices call without registering for initialization unwind. */
+	if (dev->reg_state == NETREG_UNINITIALIZED) {
+		printk(KERN_DEBUG "unregister_netdevice: device %s/%p never "
+				  "was registered\n", dev->name, dev);
+
+		WARN_ON(1);
+		return;
+	}
+
+	BUG_ON(dev->reg_state != NETREG_REGISTERED);
+
+	/* If device is running, close it first. */
+	dev_close(dev);
+
+	/* And unlink it from device chain. */
+	unlist_netdevice(dev);
+
+	dev->reg_state = NETREG_UNREGISTERING;
+
+	synchronize_net();
+
+	/* Shutdown queueing discipline. */
+	dev_shutdown(dev);
+
+
+	/* Notify protocols, that we are about to destroy
+	   this device. They should clean all the things.
+	*/
+	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+	/*
+	 *	Flush the unicast and multicast chains
+	 */
+	dev_addr_discard(dev);
+
+	if (dev->netdev_ops->ndo_uninit)
+		dev->netdev_ops->ndo_uninit(dev);
+
+	/* Notifier chain MUST detach us from master device. */
+	WARN_ON(dev->master);
+
+	/* Remove entries from kobject tree */
+	netdev_unregister_kobject(dev);
+
+	synchronize_net();
+
+	dev_put(dev);
+}
+
+static void __netdev_init_queue_locks_one(struct net_device *dev,
+					  struct netdev_queue *dev_queue,
+					  void *_unused)
+{
+	spin_lock_init(&dev_queue->_xmit_lock);
+	netdev_set_xmit_lockdep_class(&dev_queue->_xmit_lock, dev->type);
+	dev_queue->xmit_lock_owner = -1;
+}
+
+static void netdev_init_queue_locks(struct net_device *dev)
+{
+	netdev_for_each_tx_queue(dev, __netdev_init_queue_locks_one, NULL);
+	__netdev_init_queue_locks_one(dev, &dev->rx_queue, NULL);
+}
+
+unsigned long netdev_fix_features(unsigned long features, const char *name)
+{
+	/* Fix illegal SG+CSUM combinations. */
+	if ((features & NETIF_F_SG) &&
+	    !(features & NETIF_F_ALL_CSUM)) {
+		if (name)
+			printk(KERN_NOTICE "%s: Dropping NETIF_F_SG since no "
+			       "checksum feature.\n", name);
+		features &= ~NETIF_F_SG;
+	}
+
+	/* TSO requires that SG is present as well. */
+	if ((features & NETIF_F_TSO) && !(features & NETIF_F_SG)) {
+		if (name)
+			printk(KERN_NOTICE "%s: Dropping NETIF_F_TSO since no "
+			       "SG feature.\n", name);
+		features &= ~NETIF_F_TSO;
+	}
+
+	if (features & NETIF_F_UFO) {
+		if (!(features & NETIF_F_GEN_CSUM)) {
+			if (name)
+				printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
+				       "since no NETIF_F_HW_CSUM feature.\n",
+				       name);
+			features &= ~NETIF_F_UFO;
+		}
+
+		if (!(features & NETIF_F_SG)) {
+			if (name)
+				printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
+				       "since no NETIF_F_SG feature.\n", name);
+			features &= ~NETIF_F_UFO;
+		}
+	}
+
+	return features;
+}
+EXPORT_SYMBOL(netdev_fix_features);
+
+/* Some devices need to (re-)set their netdev_ops inside
+ * ->init() or similar.  If that happens, we have to setup
+ * the compat pointers again.
+ */
+void netdev_resync_ops(struct net_device *dev)
+{
+#ifdef CONFIG_COMPAT_NET_DEV_OPS
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	dev->init = ops->ndo_init;
+	dev->uninit = ops->ndo_uninit;
+	dev->open = ops->ndo_open;
+	dev->change_rx_flags = ops->ndo_change_rx_flags;
+	dev->set_rx_mode = ops->ndo_set_rx_mode;
+	dev->set_multicast_list = ops->ndo_set_multicast_list;
+	dev->set_mac_address = ops->ndo_set_mac_address;
+	dev->validate_addr = ops->ndo_validate_addr;
+	dev->do_ioctl = ops->ndo_do_ioctl;
+	dev->set_config = ops->ndo_set_config;
+	dev->change_mtu = ops->ndo_change_mtu;
+	dev->neigh_setup = ops->ndo_neigh_setup;
+	dev->tx_timeout = ops->ndo_tx_timeout;
+	dev->get_stats = ops->ndo_get_stats;
+	dev->vlan_rx_register = ops->ndo_vlan_rx_register;
+	dev->vlan_rx_add_vid = ops->ndo_vlan_rx_add_vid;
+	dev->vlan_rx_kill_vid = ops->ndo_vlan_rx_kill_vid;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = ops->ndo_poll_controller;
+#endif
+#endif
+}
+EXPORT_SYMBOL(netdev_resync_ops);
+
+/**
+ *	register_netdevice	- register a network device
+ *	@dev: device to register
+ *
+ *	Take a completed network device structure and add it to the kernel
+ *	interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
+ *	chain. 0 is returned on success. A negative errno code is returned
+ *	on a failure to set up the device, or if the name is a duplicate.
+ *
+ *	Callers must hold the rtnl semaphore. You may want
+ *	register_netdev() instead of this.
+ *
+ *	BUGS:
+ *	The locking appears insufficient to guarantee two parallel registers
+ *	will not get the same name.
+ */
+
+int register_netdevice(struct net_device *dev)
+{
+	struct hlist_head *head;
+	struct hlist_node *p;
+	int ret;
+	struct net *net = dev_net(dev);
+
+	BUG_ON(dev_boot_phase);
+	ASSERT_RTNL();
+
+	might_sleep();
+
+	/* When net_device's are persistent, this will be fatal. */
+	BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
+	BUG_ON(!net);
+
+	spin_lock_init(&dev->addr_list_lock);
+	netdev_set_addr_lockdep_class(dev);
+	netdev_init_queue_locks(dev);
+
+	dev->iflink = -1;
+
+#ifdef CONFIG_COMPAT_NET_DEV_OPS
+	/* Netdevice_ops API compatiability support.
+	 * This is temporary until all network devices are converted.
+	 */
+	if (dev->netdev_ops) {
+		netdev_resync_ops(dev);
+	} else {
+		char drivername[64];
+		pr_info("%s (%s): not using net_device_ops yet\n",
+			dev->name, netdev_drivername(dev, drivername, 64));
+
+		/* This works only because net_device_ops and the
+		   compatiablity structure are the same. */
+		dev->netdev_ops = (void *) &(dev->init);
+	}
+#endif
+
+	/* Init, if this function is available */
+	if (dev->netdev_ops->ndo_init) {
+		ret = dev->netdev_ops->ndo_init(dev);
+		if (ret) {
+			if (ret > 0)
+				ret = -EIO;
+			goto out;
+		}
+	}
+
+	if (!dev_valid_name(dev->name)) {
+		ret = -EINVAL;
+		goto err_uninit;
+	}
+
+	dev->ifindex = dev_new_index(net);
+	if (dev->iflink == -1)
+		dev->iflink = dev->ifindex;
+
+	/* Check for existence of name */
+	head = dev_name_hash(net, dev->name);
+	hlist_for_each(p, head) {
+		struct net_device *d
+			= hlist_entry(p, struct net_device, name_hlist);
+		if (!strncmp(d->name, dev->name, IFNAMSIZ)) {
+			ret = -EEXIST;
+			goto err_uninit;
+		}
+	}
+
+	/* Fix illegal checksum combinations */
+	if ((dev->features & NETIF_F_HW_CSUM) &&
+	    (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
+		printk(KERN_NOTICE "%s: mixed HW and IP checksum settings.\n",
+		       dev->name);
+		dev->features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM);
+	}
+
+	if ((dev->features & NETIF_F_NO_CSUM) &&
+	    (dev->features & (NETIF_F_HW_CSUM|NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
+		printk(KERN_NOTICE "%s: mixed no checksumming and other settings.\n",
+		       dev->name);
+		dev->features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM|NETIF_F_HW_CSUM);
+	}
+
+	dev->features = netdev_fix_features(dev->features, dev->name);
+
+	/* Enable software GSO if SG is supported. */
+	if (dev->features & NETIF_F_SG)
+		dev->features |= NETIF_F_GSO;
+
+	netdev_initialize_kobject(dev);
+	ret = netdev_register_kobject(dev);
+	if (ret)
+		goto err_uninit;
+	dev->reg_state = NETREG_REGISTERED;
+
+	/*
+	 *	Default initial state at registry is that the
+	 *	device is present.
+	 */
+
+	set_bit(__LINK_STATE_PRESENT, &dev->state);
+
+	dev_init_scheduler(dev);
+	dev_hold(dev);
+	list_netdevice(dev);
+
+	/* Notify protocols, that a new device appeared. */
+	ret = call_netdevice_notifiers(NETDEV_REGISTER, dev);
+	ret = notifier_to_errno(ret);
+	if (ret) {
+		rollback_registered(dev);
+		dev->reg_state = NETREG_UNREGISTERED;
+	}
+
+out:
+	return ret;
+
+err_uninit:
+	if (dev->netdev_ops->ndo_uninit)
+		dev->netdev_ops->ndo_uninit(dev);
+	goto out;
+}
+
+/**
+ *	init_dummy_netdev	- init a dummy network device for NAPI
+ *	@dev: device to init
+ *
+ *	This takes a network device structure and initialize the minimum
+ *	amount of fields so it can be used to schedule NAPI polls without
+ *	registering a full blown interface. This is to be used by drivers
+ *	that need to tie several hardware interfaces to a single NAPI
+ *	poll scheduler due to HW limitations.
+ */
+int init_dummy_netdev(struct net_device *dev)
+{
+	/* Clear everything. Note we don't initialize spinlocks
+	 * are they aren't supposed to be taken by any of the
+	 * NAPI code and this dummy netdev is supposed to be
+	 * only ever used for NAPI polls
+	 */
+	memset(dev, 0, sizeof(struct net_device));
+
+	/* make sure we BUG if trying to hit standard
+	 * register/unregister code path
+	 */
+	dev->reg_state = NETREG_DUMMY;
+
+	/* initialize the ref count */
+	atomic_set(&dev->refcnt, 1);
+
+	/* NAPI wants this */
+	INIT_LIST_HEAD(&dev->napi_list);
+
+	/* a dummy interface is started by default */
+	set_bit(__LINK_STATE_PRESENT, &dev->state);
+	set_bit(__LINK_STATE_START, &dev->state);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(init_dummy_netdev);
+
+
+/**
+ *	register_netdev	- register a network device
+ *	@dev: device to register
+ *
+ *	Take a completed network device structure and add it to the kernel
+ *	interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
+ *	chain. 0 is returned on success. A negative errno code is returned
+ *	on a failure to set up the device, or if the name is a duplicate.
+ *
+ *	This is a wrapper around register_netdevice that takes the rtnl semaphore
+ *	and expands the device name if you passed a format string to
+ *	alloc_netdev.
+ */
+int register_netdev(struct net_device *dev)
+{
+	int err;
+
+	rtnl_lock();
+
+	/*
+	 * If the name is a format string the caller wants us to do a
+	 * name allocation.
+	 */
+	if (strchr(dev->name, '%')) {
+		err = dev_alloc_name(dev, dev->name);
+		if (err < 0)
+			goto out;
+	}
+
+	err = register_netdevice(dev);
+out:
+	rtnl_unlock();
+	return err;
+}
+EXPORT_SYMBOL(register_netdev);
+
+/*
+ * netdev_wait_allrefs - wait until all references are gone.
+ *
+ * This is called when unregistering network devices.
+ *
+ * Any protocol or device that holds a reference should register
+ * for netdevice notification, and cleanup and put back the
+ * reference if they receive an UNREGISTER event.
+ * We can get stuck here if buggy protocols don't correctly
+ * call dev_put.
+ */
+static void netdev_wait_allrefs(struct net_device *dev)
+{
+	unsigned long rebroadcast_time, warning_time;
+
+	rebroadcast_time = warning_time = jiffies;
+	while (atomic_read(&dev->refcnt) != 0) {
+		if (time_after(jiffies, rebroadcast_time + 1 * HZ)) {
+			rtnl_lock();
+
+			/* Rebroadcast unregister notification */
+			call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+			if (test_bit(__LINK_STATE_LINKWATCH_PENDING,
+				     &dev->state)) {
+				/* We must not have linkwatch events
+				 * pending on unregister. If this
+				 * happens, we simply run the queue
+				 * unscheduled, resulting in a noop
+				 * for this device.
+				 */
+				linkwatch_run_queue();
+			}
+
+			__rtnl_unlock();
+
+			rebroadcast_time = jiffies;
+		}
+
+		msleep(250);
+
+		if (time_after(jiffies, warning_time + 10 * HZ)) {
+			printk(KERN_EMERG "unregister_netdevice: "
+			       "waiting for %s to become free. Usage "
+			       "count = %d\n",
+			       dev->name, atomic_read(&dev->refcnt));
+			warning_time = jiffies;
+		}
+	}
+}
+
+/* The sequence is:
+ *
+ *	rtnl_lock();
+ *	...
+ *	register_netdevice(x1);
+ *	register_netdevice(x2);
+ *	...
+ *	unregister_netdevice(y1);
+ *	unregister_netdevice(y2);
+ *      ...
+ *	rtnl_unlock();
+ *	free_netdev(y1);
+ *	free_netdev(y2);
+ *
+ * We are invoked by rtnl_unlock().
+ * This allows us to deal with problems:
+ * 1) We can delete sysfs objects which invoke hotplug
+ *    without deadlocking with linkwatch via keventd.
+ * 2) Since we run with the RTNL semaphore not held, we can sleep
+ *    safely in order to wait for the netdev refcnt to drop to zero.
+ *
+ * We must not return until all unregister events added during
+ * the interval the lock was held have been completed.
+ */
+void netdev_run_todo(void)
+{
+	struct list_head list;
+
+	/* Snapshot list, allow later requests */
+	list_replace_init(&net_todo_list, &list);
+
+	__rtnl_unlock();
+
+	while (!list_empty(&list)) {
+		struct net_device *dev
+			= list_entry(list.next, struct net_device, todo_list);
+		list_del(&dev->todo_list);
+
+		if (unlikely(dev->reg_state != NETREG_UNREGISTERING)) {
+			printk(KERN_ERR "network todo '%s' but state %d\n",
+			       dev->name, dev->reg_state);
+			dump_stack();
+			continue;
+		}
+
+		dev->reg_state = NETREG_UNREGISTERED;
+
+		on_each_cpu(flush_backlog, dev, 1);
+
+		netdev_wait_allrefs(dev);
+
+		/* paranoia */
+		BUG_ON(atomic_read(&dev->refcnt));
+		WARN_ON(dev->ip_ptr);
+		WARN_ON(dev->ip6_ptr);
+		WARN_ON(dev->dn_ptr);
+
+		if (dev->destructor)
+			dev->destructor(dev);
+
+		/* Free network device */
+		kobject_put(&dev->dev.kobj);
+	}
+}
+
+/**
+ *	dev_get_stats	- get network device statistics
+ *	@dev: device to get statistics from
+ *
+ *	Get network statistics from device. The device driver may provide
+ *	its own method by setting dev->netdev_ops->get_stats; otherwise
+ *	the internal statistics structure is used.
+ */
+const struct net_device_stats *dev_get_stats(struct net_device *dev)
+ {
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	if (ops->ndo_get_stats)
+		return ops->ndo_get_stats(dev);
+	else
+		return &dev->stats;
+}
+EXPORT_SYMBOL(dev_get_stats);
+
+static void netdev_init_one_queue(struct net_device *dev,
+				  struct netdev_queue *queue,
+				  void *_unused)
+{
+	queue->dev = dev;
+}
+
+static void netdev_init_queues(struct net_device *dev)
+{
+	netdev_init_one_queue(dev, &dev->rx_queue, NULL);
+	netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
+	spin_lock_init(&dev->tx_global_lock);
+}
+
+/**
+ *	alloc_netdev_mq - allocate network device
+ *	@sizeof_priv:	size of private data to allocate space for
+ *	@name:		device name format string
+ *	@setup:		callback to initialize device
+ *	@queue_count:	the number of subqueues to allocate
+ *
+ *	Allocates a struct net_device with private data area for driver use
+ *	and performs basic initialization.  Also allocates subquue structs
+ *	for each queue on the device at the end of the netdevice.
+ */
+struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
+		void (*setup)(struct net_device *), unsigned int queue_count)
+{
+	struct netdev_queue *tx;
+	struct net_device *dev;
+	size_t alloc_size;
+	void *p;
+
+	BUG_ON(strlen(name) >= sizeof(dev->name));
+
+	alloc_size = sizeof(struct net_device);
+	if (sizeof_priv) {
+		/* ensure 32-byte alignment of private area */
+		alloc_size = (alloc_size + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST;
+		alloc_size += sizeof_priv;
+	}
+	/* ensure 32-byte alignment of whole construct */
+	alloc_size += NETDEV_ALIGN_CONST;
+
+	p = kzalloc(alloc_size, GFP_KERNEL);
+	if (!p) {
+		printk(KERN_ERR "alloc_netdev: Unable to allocate device.\n");
+		return NULL;
+	}
+
+	tx = kcalloc(queue_count, sizeof(struct netdev_queue), GFP_KERNEL);
+	if (!tx) {
+		printk(KERN_ERR "alloc_netdev: Unable to allocate "
+		       "tx qdiscs.\n");
+		kfree(p);
+		return NULL;
+	}
+
+	dev = (struct net_device *)
+		(((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+	dev->padded = (char *)dev - (char *)p;
+	dev_net_set(dev, &init_net);
+
+	dev->_tx = tx;
+	dev->num_tx_queues = queue_count;
+	dev->real_num_tx_queues = queue_count;
+
+	dev->gso_max_size = GSO_MAX_SIZE;
+
+	netdev_init_queues(dev);
+
+	INIT_LIST_HEAD(&dev->napi_list);
+	setup(dev);
+	strcpy(dev->name, name);
+	return dev;
+}
+EXPORT_SYMBOL(alloc_netdev_mq);
+
+/**
+ *	free_netdev - free network device
+ *	@dev: device
+ *
+ *	This function does the last stage of destroying an allocated device
+ * 	interface. The reference to the device object is released.
+ *	If this is the last reference then it will be freed.
+ */
+void free_netdev(struct net_device *dev)
+{
+	struct napi_struct *p, *n;
+
+	release_net(dev_net(dev));
+
+	kfree(dev->_tx);
+
+	list_for_each_entry_safe(p, n, &dev->napi_list, dev_list)
+		netif_napi_del(p);
+
+	/*  Compatibility with error handling in drivers */
+	if (dev->reg_state == NETREG_UNINITIALIZED) {
+		kfree((char *)dev - dev->padded);
+		return;
+	}
+
+	BUG_ON(dev->reg_state != NETREG_UNREGISTERED);
+	dev->reg_state = NETREG_RELEASED;
+
+	/* will free via device release */
+	put_device(&dev->dev);
+}
+
+/**
+ *	synchronize_net -  Synchronize with packet receive processing
+ *
+ *	Wait for packets currently being received to be done.
+ *	Does not block later packets from starting.
+ */
+void synchronize_net(void)
+{
+	might_sleep();
+	synchronize_rcu();
+}
+
+/**
+ *	unregister_netdevice - remove device from the kernel
+ *	@dev: device
+ *
+ *	This function shuts down a device interface and removes it
+ *	from the kernel tables.
+ *
+ *	Callers must hold the rtnl semaphore.  You may want
+ *	unregister_netdev() instead of this.
+ */
+
+void unregister_netdevice(struct net_device *dev)
+{
+	ASSERT_RTNL();
+
+	rollback_registered(dev);
+	/* Finish processing unregister after unlock */
+	net_set_todo(dev);
+}
+
+/**
+ *	unregister_netdev - remove device from the kernel
+ *	@dev: device
+ *
+ *	This function shuts down a device interface and removes it
+ *	from the kernel tables.
+ *
+ *	This is just a wrapper for unregister_netdevice that takes
+ *	the rtnl semaphore.  In general you want to use this and not
+ *	unregister_netdevice.
+ */
+void unregister_netdev(struct net_device *dev)
+{
+	rtnl_lock();
+	unregister_netdevice(dev);
+	rtnl_unlock();
+}
+
+EXPORT_SYMBOL(unregister_netdev);
+
+/**
+ *	dev_change_net_namespace - move device to different nethost namespace
+ *	@dev: device
+ *	@net: network namespace
+ *	@pat: If not NULL name pattern to try if the current device name
+ *	      is already taken in the destination network namespace.
+ *
+ *	This function shuts down a device interface and moves it
+ *	to a new network namespace. On success 0 is returned, on
+ *	a failure a netagive errno code is returned.
+ *
+ *	Callers must hold the rtnl semaphore.
+ */
+
+int dev_change_net_namespace(struct net_device *dev, struct net *net, const char *pat)
+{
+	char buf[IFNAMSIZ];
+	const char *destname;
+	int err;
+
+	ASSERT_RTNL();
+
+	/* Don't allow namespace local devices to be moved. */
+	err = -EINVAL;
+	if (dev->features & NETIF_F_NETNS_LOCAL)
+		goto out;
+
+#ifdef CONFIG_SYSFS
+	/* Don't allow real devices to be moved when sysfs
+	 * is enabled.
+	 */
+	err = -EINVAL;
+	if (dev->dev.parent)
+		goto out;
+#endif
+
+	/* Ensure the device has been registrered */
+	err = -EINVAL;
+	if (dev->reg_state != NETREG_REGISTERED)
+		goto out;
+
+	/* Get out if there is nothing todo */
+	err = 0;
+	if (net_eq(dev_net(dev), net))
+		goto out;
+
+	/* Pick the destination device name, and ensure
+	 * we can use it in the destination network namespace.
+	 */
+	err = -EEXIST;
+	destname = dev->name;
+	if (__dev_get_by_name(net, destname)) {
+		/* We get here if we can't use the current device name */
+		if (!pat)
+			goto out;
+		if (!dev_valid_name(pat))
+			goto out;
+		if (strchr(pat, '%')) {
+			if (__dev_alloc_name(net, pat, buf) < 0)
+				goto out;
+			destname = buf;
+		} else
+			destname = pat;
+		if (__dev_get_by_name(net, destname))
+			goto out;
+	}
+
+	/*
+	 * And now a mini version of register_netdevice unregister_netdevice.
+	 */
+
+	/* If device is running close it first. */
+	dev_close(dev);
+
+	/* And unlink it from device chain */
+	err = -ENODEV;
+	unlist_netdevice(dev);
+
+	synchronize_net();
+
+	/* Shutdown queueing discipline. */
+	dev_shutdown(dev);
+
+	/* Notify protocols, that we are about to destroy
+	   this device. They should clean all the things.
+	*/
+	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+
+	/*
+	 *	Flush the unicast and multicast chains
+	 */
+	dev_addr_discard(dev);
+
+	netdev_unregister_kobject(dev);
+
+	/* Actually switch the network namespace */
+	dev_net_set(dev, net);
+
+	/* Assign the new device name */
+	if (destname != dev->name)
+		strcpy(dev->name, destname);
+
+	/* If there is an ifindex conflict assign a new one */
+	if (__dev_get_by_index(net, dev->ifindex)) {
+		int iflink = (dev->iflink == dev->ifindex);
+		dev->ifindex = dev_new_index(net);
+		if (iflink)
+			dev->iflink = dev->ifindex;
+	}
+
+	/* Fixup kobjects */
+	err = netdev_register_kobject(dev);
+	WARN_ON(err);
+
+	/* Add the device back in the hashes */
+	list_netdevice(dev);
+
+	/* Notify protocols, that a new device appeared. */
+	call_netdevice_notifiers(NETDEV_REGISTER, dev);
+
+	synchronize_net();
+	err = 0;
+out:
+	return err;
+}
+
+static int dev_cpu_callback(struct notifier_block *nfb,
+			    unsigned long action,
+			    void *ocpu)
+{
+	struct sk_buff **list_skb;
+	struct Qdisc **list_net;
+	struct sk_buff *skb;
+	unsigned int cpu, oldcpu = (unsigned long)ocpu;
+	struct softnet_data *sd, *oldsd;
+
+	if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
+		return NOTIFY_OK;
+
+	local_irq_disable();
+	cpu = smp_processor_id();
+	sd = &per_cpu(softnet_data, cpu);
+	oldsd = &per_cpu(softnet_data, oldcpu);
+
+	/* Find end of our completion_queue. */
+	list_skb = &sd->completion_queue;
+	while (*list_skb)
+		list_skb = &(*list_skb)->next;
+	/* Append completion queue from offline CPU. */
+	*list_skb = oldsd->completion_queue;
+	oldsd->completion_queue = NULL;
+
+	/* Find end of our output_queue. */
+	list_net = &sd->output_queue;
+	while (*list_net)
+		list_net = &(*list_net)->next_sched;
+	/* Append output queue from offline CPU. */
+	*list_net = oldsd->output_queue;
+	oldsd->output_queue = NULL;
+
+	raise_softirq_irqoff(NET_TX_SOFTIRQ);
+	local_irq_enable();
+
+	/* Process offline CPU's input_pkt_queue */
+	while ((skb = __skb_dequeue(&oldsd->input_pkt_queue)))
+		netif_rx(skb);
+
+	return NOTIFY_OK;
+}
+
+
+/**
+ *	netdev_increment_features - increment feature set by one
+ *	@all: current feature set
+ *	@one: new feature set
+ *	@mask: mask feature set
+ *
+ *	Computes a new feature set after adding a device with feature set
+ *	@one to the master device with current feature set @all.  Will not
+ *	enable anything that is off in @mask. Returns the new feature set.
+ */
+unsigned long netdev_increment_features(unsigned long all, unsigned long one,
+					unsigned long mask)
+{
+	/* If device needs checksumming, downgrade to it. */
+        if (all & NETIF_F_NO_CSUM && !(one & NETIF_F_NO_CSUM))
+		all ^= NETIF_F_NO_CSUM | (one & NETIF_F_ALL_CSUM);
+	else if (mask & NETIF_F_ALL_CSUM) {
+		/* If one device supports v4/v6 checksumming, set for all. */
+		if (one & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM) &&
+		    !(all & NETIF_F_GEN_CSUM)) {
+			all &= ~NETIF_F_ALL_CSUM;
+			all |= one & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+		}
+
+		/* If one device supports hw checksumming, set for all. */
+		if (one & NETIF_F_GEN_CSUM && !(all & NETIF_F_GEN_CSUM)) {
+			all &= ~NETIF_F_ALL_CSUM;
+			all |= NETIF_F_HW_CSUM;
+		}
+	}
+
+	one |= NETIF_F_ALL_CSUM;
+
+	one |= all & NETIF_F_ONE_FOR_ALL;
+	all &= one | NETIF_F_LLTX | NETIF_F_GSO;
+	all |= one & mask & NETIF_F_ONE_FOR_ALL;
+
+	return all;
+}
+EXPORT_SYMBOL(netdev_increment_features);
+
+static struct hlist_head *netdev_create_hash(void)
+{
+	int i;
+	struct hlist_head *hash;
+
+	hash = kmalloc(sizeof(*hash) * NETDEV_HASHENTRIES, GFP_KERNEL);
+	if (hash != NULL)
+		for (i = 0; i < NETDEV_HASHENTRIES; i++)
+			INIT_HLIST_HEAD(&hash[i]);
+
+	return hash;
+}
+
+/* Initialize per network namespace state */
+static int __net_init netdev_init(struct net *net)
+{
+	INIT_LIST_HEAD(&net->dev_base_head);
+
+	net->dev_name_head = netdev_create_hash();
+	if (net->dev_name_head == NULL)
+		goto err_name;
+
+	net->dev_index_head = netdev_create_hash();
+	if (net->dev_index_head == NULL)
+		goto err_idx;
+
+	return 0;
+
+err_idx:
+	kfree(net->dev_name_head);
+err_name:
+	return -ENOMEM;
+}
+
+/**
+ *	netdev_drivername - network driver for the device
+ *	@dev: network device
+ *	@buffer: buffer for resulting name
+ *	@len: size of buffer
+ *
+ *	Determine network driver for device.
+ */
+char *netdev_drivername(const struct net_device *dev, char *buffer, int len)
+{
+	const struct device_driver *driver;
+	const struct device *parent;
+
+	if (len <= 0 || !buffer)
+		return buffer;
+	buffer[0] = 0;
+
+	parent = dev->dev.parent;
+
+	if (!parent)
+		return buffer;
+
+	driver = parent->driver;
+	if (driver && driver->name)
+		strlcpy(buffer, driver->name, len);
+	return buffer;
+}
+
+static void __net_exit netdev_exit(struct net *net)
+{
+	kfree(net->dev_name_head);
+	kfree(net->dev_index_head);
+}
+
+static struct pernet_operations __net_initdata netdev_net_ops = {
+	.init = netdev_init,
+	.exit = netdev_exit,
+};
+
+static void __net_exit default_device_exit(struct net *net)
+{
+	struct net_device *dev;
+	/*
+	 * Push all migratable of the network devices back to the
+	 * initial network namespace
+	 */
+	rtnl_lock();
+restart:
+	for_each_netdev(net, dev) {
+		int err;
+		char fb_name[IFNAMSIZ];
+
+		/* Ignore unmoveable devices (i.e. loopback) */
+		if (dev->features & NETIF_F_NETNS_LOCAL)
+			continue;
+
+		/* Delete virtual devices */
+		if (dev->rtnl_link_ops && dev->rtnl_link_ops->dellink) {
+			dev->rtnl_link_ops->dellink(dev);
+			goto restart;
+		}
+
+		/* Push remaing network devices to init_net */
+		snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
+		err = dev_change_net_namespace(dev, &init_net, fb_name);
+		if (err) {
+			printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n",
+				__func__, dev->name, err);
+			BUG();
+		}
+		goto restart;
+	}
+	rtnl_unlock();
+}
+
+static struct pernet_operations __net_initdata default_device_ops = {
+	.exit = default_device_exit,
+};
+
+/*
+ *	Initialize the DEV module. At boot time this walks the device list and
+ *	unhooks any devices that fail to initialise (normally hardware not
+ *	present) and leaves us with a valid list of present and active devices.
+ *
+ */
+
+/*
+ *       This is called single threaded during boot, so no need
+ *       to take the rtnl semaphore.
+ */
+static int __init net_dev_init(void)
+{
+	int i, rc = -ENOMEM;
+
+	BUG_ON(!dev_boot_phase);
+
+	if (dev_proc_init())
+		goto out;
+
+	if (netdev_kobject_init())
+		goto out;
+
+	INIT_LIST_HEAD(&ptype_all);
+	for (i = 0; i < PTYPE_HASH_SIZE; i++)
+		INIT_LIST_HEAD(&ptype_base[i]);
+
+	if (register_pernet_subsys(&netdev_net_ops))
+		goto out;
+
+	/*
+	 *	Initialise the packet receive queues.
+	 */
+
+	for_each_possible_cpu(i) {
+		struct softnet_data *queue;
+
+		queue = &per_cpu(softnet_data, i);
+		skb_queue_head_init(&queue->input_pkt_queue);
+		queue->completion_queue = NULL;
+		INIT_LIST_HEAD(&queue->poll_list);
+
+		queue->backlog.poll = process_backlog;
+		queue->backlog.weight = weight_p;
+		queue->backlog.gro_list = NULL;
+	}
+
+	dev_boot_phase = 0;
+
+	/* The loopback device is special if any other network devices
+	 * is present in a network namespace the loopback device must
+	 * be present. Since we now dynamically allocate and free the
+	 * loopback device ensure this invariant is maintained by
+	 * keeping the loopback device as the first device on the
+	 * list of network devices.  Ensuring the loopback devices
+	 * is the first device that appears and the last network device
+	 * that disappears.
+	 */
+	if (register_pernet_device(&loopback_net_ops))
+		goto out;
+
+	if (register_pernet_device(&default_device_ops))
+		goto out;
+
+	open_softirq(NET_TX_SOFTIRQ, net_tx_action);
+	open_softirq(NET_RX_SOFTIRQ, net_rx_action);
+
+	hotcpu_notifier(dev_cpu_callback, 0);
+	dst_init();
+	dev_mcast_init();
+	rc = 0;
+out:
+	return rc;
+}
+
+subsys_initcall(net_dev_init);
+
+EXPORT_SYMBOL(__dev_get_by_index);
+EXPORT_SYMBOL(__dev_get_by_name);
+EXPORT_SYMBOL(__dev_remove_pack);
+EXPORT_SYMBOL(dev_valid_name);
+EXPORT_SYMBOL(dev_add_pack);
+EXPORT_SYMBOL(dev_alloc_name);
+EXPORT_SYMBOL(dev_close);
+EXPORT_SYMBOL(dev_get_by_flags);
+EXPORT_SYMBOL(dev_get_by_index);
+EXPORT_SYMBOL(dev_get_by_name);
+EXPORT_SYMBOL(dev_open);
+EXPORT_SYMBOL(dev_queue_xmit);
+EXPORT_SYMBOL(dev_remove_pack);
+EXPORT_SYMBOL(dev_set_allmulti);
+EXPORT_SYMBOL(dev_set_promiscuity);
+EXPORT_SYMBOL(dev_change_flags);
+EXPORT_SYMBOL(dev_set_mtu);
+EXPORT_SYMBOL(dev_set_mac_address);
+EXPORT_SYMBOL(free_netdev);
+EXPORT_SYMBOL(netdev_boot_setup_check);
+EXPORT_SYMBOL(netdev_set_master);
+EXPORT_SYMBOL(netdev_state_change);
+EXPORT_SYMBOL(netif_receive_skb);
+EXPORT_SYMBOL(netif_rx);
+EXPORT_SYMBOL(register_gifconf);
+EXPORT_SYMBOL(register_netdevice);
+EXPORT_SYMBOL(register_netdevice_notifier);
+EXPORT_SYMBOL(skb_checksum_help);
+EXPORT_SYMBOL(synchronize_net);
+EXPORT_SYMBOL(unregister_netdevice);
+EXPORT_SYMBOL(unregister_netdevice_notifier);
+EXPORT_SYMBOL(net_enable_timestamp);
+EXPORT_SYMBOL(net_disable_timestamp);
+EXPORT_SYMBOL(dev_get_flags);
+
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+EXPORT_SYMBOL(br_handle_frame_hook);
+EXPORT_SYMBOL(br_fdb_get_hook);
+EXPORT_SYMBOL(br_fdb_put_hook);
+#endif
+
+EXPORT_SYMBOL(dev_load);
+
+EXPORT_PER_CPU_SYMBOL(softnet_data);
diff --git a/libdde_linux26/contrib/net/core/dev_mcast.c b/libdde_linux26/contrib/net/core/dev_mcast.c
new file mode 100644
index 00000000..9e2fa39f
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/dev_mcast.c
@@ -0,0 +1,229 @@
+/*
+ *	Linux NET3:	Multicast List maintenance.
+ *
+ *	Authors:
+ *		Tim Kordas <tjk@nostromo.eeap.cwru.edu>
+ *		Richard Underwood <richard@wuzz.demon.co.uk>
+ *
+ *	Stir fried together from the IP multicast and CAP patches above
+ *		Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ *	Fixes:
+ *		Alan Cox	:	Update the device on a real delete
+ *					rather than any time but...
+ *		Alan Cox	:	IFF_ALLMULTI support.
+ *		Alan Cox	: 	New format set_multicast_list() calls.
+ *		Gleb Natapov    :       Remove dev_mc_lock.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <linux/bitops.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/in.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <net/net_namespace.h>
+#include <net/ip.h>
+#include <net/route.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <net/arp.h>
+
+
+/*
+ *	Device multicast list maintenance.
+ *
+ *	This is used both by IP and by the user level maintenance functions.
+ *	Unlike BSD we maintain a usage count on a given multicast address so
+ *	that a casual user application can add/delete multicasts used by
+ *	protocols without doing damage to the protocols when it deletes the
+ *	entries. It also helps IP as it tracks overlapping maps.
+ *
+ *	Device mc lists are changed by bh at least if IPv6 is enabled,
+ *	so that it must be bh protected.
+ *
+ *	We block accesses to device mc filters with netif_tx_lock.
+ */
+
+/*
+ *	Delete a device level multicast
+ */
+
+int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
+{
+	int err;
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_delete(&dev->mc_list, &dev->mc_count,
+				addr, alen, glbl);
+	if (!err) {
+		/*
+		 *	We have altered the list, so the card
+		 *	loaded filter is now wrong. Fix it
+		 */
+
+		__dev_set_rx_mode(dev);
+	}
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+
+/*
+ *	Add a device level multicast
+ */
+
+int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
+{
+	int err;
+
+	netif_addr_lock_bh(dev);
+	err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
+	if (!err)
+		__dev_set_rx_mode(dev);
+	netif_addr_unlock_bh(dev);
+	return err;
+}
+
+/**
+ *	dev_mc_sync	- Synchronize device's multicast list to another device
+ *	@to: destination device
+ *	@from: source device
+ *
+ * 	Add newly added addresses to the destination device and release
+ * 	addresses that have no users left. The source device must be
+ * 	locked by netif_tx_lock_bh.
+ *
+ *	This function is intended to be called from the dev->set_multicast_list
+ *	or dev->set_rx_mode function of layered software devices.
+ */
+int dev_mc_sync(struct net_device *to, struct net_device *from)
+{
+	int err = 0;
+
+	netif_addr_lock_bh(to);
+	err = __dev_addr_sync(&to->mc_list, &to->mc_count,
+			      &from->mc_list, &from->mc_count);
+	if (!err)
+		__dev_set_rx_mode(to);
+	netif_addr_unlock_bh(to);
+
+	return err;
+}
+EXPORT_SYMBOL(dev_mc_sync);
+
+
+/**
+ * 	dev_mc_unsync	- Remove synchronized addresses from the destination
+ * 			  device
+ *	@to: destination device
+ *	@from: source device
+ *
+ * 	Remove all addresses that were added to the destination device by
+ * 	dev_mc_sync(). This function is intended to be called from the
+ * 	dev->stop function of layered software devices.
+ */
+void dev_mc_unsync(struct net_device *to, struct net_device *from)
+{
+	netif_addr_lock_bh(from);
+	netif_addr_lock(to);
+
+	__dev_addr_unsync(&to->mc_list, &to->mc_count,
+			  &from->mc_list, &from->mc_count);
+	__dev_set_rx_mode(to);
+
+	netif_addr_unlock(to);
+	netif_addr_unlock_bh(from);
+}
+EXPORT_SYMBOL(dev_mc_unsync);
+
+#ifdef CONFIG_PROC_FS
+static int dev_mc_seq_show(struct seq_file *seq, void *v)
+{
+	struct dev_addr_list *m;
+	struct net_device *dev = v;
+
+	if (v == SEQ_START_TOKEN)
+		return 0;
+
+	netif_addr_lock_bh(dev);
+	for (m = dev->mc_list; m; m = m->next) {
+		int i;
+
+		seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
+			   dev->name, m->dmi_users, m->dmi_gusers);
+
+		for (i = 0; i < m->dmi_addrlen; i++)
+			seq_printf(seq, "%02x", m->dmi_addr[i]);
+
+		seq_putc(seq, '\n');
+	}
+	netif_addr_unlock_bh(dev);
+	return 0;
+}
+
+static const struct seq_operations dev_mc_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = dev_mc_seq_show,
+};
+
+static int dev_mc_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &dev_mc_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations dev_mc_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = dev_mc_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+#endif
+
+static int __net_init dev_mc_net_init(struct net *net)
+{
+	if (!proc_net_fops_create(net, "dev_mcast", 0, &dev_mc_seq_fops))
+		return -ENOMEM;
+	return 0;
+}
+
+static void __net_exit dev_mc_net_exit(struct net *net)
+{
+	proc_net_remove(net, "dev_mcast");
+}
+
+static struct pernet_operations __net_initdata dev_mc_net_ops = {
+	.init = dev_mc_net_init,
+	.exit = dev_mc_net_exit,
+};
+
+void __init dev_mcast_init(void)
+{
+	register_pernet_subsys(&dev_mc_net_ops);
+}
+
+EXPORT_SYMBOL(dev_mc_add);
+EXPORT_SYMBOL(dev_mc_delete);
diff --git a/libdde_linux26/contrib/net/core/ethtool.c b/libdde_linux26/contrib/net/core/ethtool.c
new file mode 100644
index 00000000..947710a3
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/ethtool.c
@@ -0,0 +1,1091 @@
+/*
+ * net/core/ethtool.c - Ethtool ioctl handler
+ * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
+ *
+ * This file is where we call all the ethtool_ops commands to get
+ * the information ethtool needs.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <asm/uaccess.h>
+
+/*
+ * Some useful ethtool_ops methods that're device independent.
+ * If we find that all drivers want to do the same thing here,
+ * we can turn these into dev_() function calls.
+ */
+
+u32 ethtool_op_get_link(struct net_device *dev)
+{
+	return netif_carrier_ok(dev) ? 1 : 0;
+}
+
+u32 ethtool_op_get_tx_csum(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_ALL_CSUM) != 0;
+}
+
+int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_IP_CSUM;
+	else
+		dev->features &= ~NETIF_F_IP_CSUM;
+
+	return 0;
+}
+
+int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_HW_CSUM;
+	else
+		dev->features &= ~NETIF_F_HW_CSUM;
+
+	return 0;
+}
+
+int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	else
+		dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+
+	return 0;
+}
+
+u32 ethtool_op_get_sg(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_SG) != 0;
+}
+
+int ethtool_op_set_sg(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_SG;
+	else
+		dev->features &= ~NETIF_F_SG;
+
+	return 0;
+}
+
+u32 ethtool_op_get_tso(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_TSO) != 0;
+}
+
+int ethtool_op_set_tso(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_TSO;
+	else
+		dev->features &= ~NETIF_F_TSO;
+
+	return 0;
+}
+
+u32 ethtool_op_get_ufo(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_UFO) != 0;
+}
+
+int ethtool_op_set_ufo(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= NETIF_F_UFO;
+	else
+		dev->features &= ~NETIF_F_UFO;
+	return 0;
+}
+
+/* the following list of flags are the same as their associated
+ * NETIF_F_xxx values in include/linux/netdevice.h
+ */
+static const u32 flags_dup_features =
+	ETH_FLAG_LRO;
+
+u32 ethtool_op_get_flags(struct net_device *dev)
+{
+	/* in the future, this function will probably contain additional
+	 * handling for flags which are not so easily handled
+	 * by a simple masking operation
+	 */
+
+	return dev->features & flags_dup_features;
+}
+
+int ethtool_op_set_flags(struct net_device *dev, u32 data)
+{
+	if (data & ETH_FLAG_LRO)
+		dev->features |= NETIF_F_LRO;
+	else
+		dev->features &= ~NETIF_F_LRO;
+
+	return 0;
+}
+
+/* Handlers for each ethtool command */
+
+static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_cmd cmd = { ETHTOOL_GSET };
+	int err;
+
+	if (!dev->ethtool_ops->get_settings)
+		return -EOPNOTSUPP;
+
+	err = dev->ethtool_ops->get_settings(dev, &cmd);
+	if (err < 0)
+		return err;
+
+	if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_cmd cmd;
+
+	if (!dev->ethtool_ops->set_settings)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_settings(dev, &cmd);
+}
+
+static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_drvinfo info;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+
+	if (!ops->get_drvinfo)
+		return -EOPNOTSUPP;
+
+	memset(&info, 0, sizeof(info));
+	info.cmd = ETHTOOL_GDRVINFO;
+	ops->get_drvinfo(dev, &info);
+
+	if (ops->get_sset_count) {
+		int rc;
+
+		rc = ops->get_sset_count(dev, ETH_SS_TEST);
+		if (rc >= 0)
+			info.testinfo_len = rc;
+		rc = ops->get_sset_count(dev, ETH_SS_STATS);
+		if (rc >= 0)
+			info.n_stats = rc;
+		rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
+		if (rc >= 0)
+			info.n_priv_flags = rc;
+	} else {
+		/* code path for obsolete hooks */
+
+		if (ops->self_test_count)
+			info.testinfo_len = ops->self_test_count(dev);
+		if (ops->get_stats_count)
+			info.n_stats = ops->get_stats_count(dev);
+	}
+	if (ops->get_regs_len)
+		info.regdump_len = ops->get_regs_len(dev);
+	if (ops->get_eeprom_len)
+		info.eedump_len = ops->get_eeprom_len(dev);
+
+	if (copy_to_user(useraddr, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_rxhash(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_rxnfc cmd;
+
+	if (!dev->ethtool_ops->set_rxhash)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_rxhash(dev, &cmd);
+}
+
+static int ethtool_get_rxhash(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_rxnfc info;
+
+	if (!dev->ethtool_ops->get_rxhash)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&info, useraddr, sizeof(info)))
+		return -EFAULT;
+
+	dev->ethtool_ops->get_rxhash(dev, &info);
+
+	if (copy_to_user(useraddr, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_regs regs;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	void *regbuf;
+	int reglen, ret;
+
+	if (!ops->get_regs || !ops->get_regs_len)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&regs, useraddr, sizeof(regs)))
+		return -EFAULT;
+
+	reglen = ops->get_regs_len(dev);
+	if (regs.len > reglen)
+		regs.len = reglen;
+
+	regbuf = kmalloc(reglen, GFP_USER);
+	if (!regbuf)
+		return -ENOMEM;
+
+	ops->get_regs(dev, &regs, regbuf);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &regs, sizeof(regs)))
+		goto out;
+	useraddr += offsetof(struct ethtool_regs, data);
+	if (copy_to_user(useraddr, regbuf, regs.len))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(regbuf);
+	return ret;
+}
+
+static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
+
+	if (!dev->ethtool_ops->get_wol)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_wol(dev, &wol);
+
+	if (copy_to_user(useraddr, &wol, sizeof(wol)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_wolinfo wol;
+
+	if (!dev->ethtool_ops->set_wol)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&wol, useraddr, sizeof(wol)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_wol(dev, &wol);
+}
+
+static int ethtool_nway_reset(struct net_device *dev)
+{
+	if (!dev->ethtool_ops->nway_reset)
+		return -EOPNOTSUPP;
+
+	return dev->ethtool_ops->nway_reset(dev);
+}
+
+static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_eeprom eeprom;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	void __user *userbuf = useraddr + sizeof(eeprom);
+	u32 bytes_remaining;
+	u8 *data;
+	int ret = 0;
+
+	if (!ops->get_eeprom || !ops->get_eeprom_len)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
+		return -EFAULT;
+
+	/* Check for wrap and zero */
+	if (eeprom.offset + eeprom.len <= eeprom.offset)
+		return -EINVAL;
+
+	/* Check for exceeding total eeprom len */
+	if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
+		return -EINVAL;
+
+	data = kmalloc(PAGE_SIZE, GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	bytes_remaining = eeprom.len;
+	while (bytes_remaining > 0) {
+		eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
+
+		ret = ops->get_eeprom(dev, &eeprom, data);
+		if (ret)
+			break;
+		if (copy_to_user(userbuf, data, eeprom.len)) {
+			ret = -EFAULT;
+			break;
+		}
+		userbuf += eeprom.len;
+		eeprom.offset += eeprom.len;
+		bytes_remaining -= eeprom.len;
+	}
+
+	eeprom.len = userbuf - (useraddr + sizeof(eeprom));
+	eeprom.offset -= eeprom.len;
+	if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
+		ret = -EFAULT;
+
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_eeprom eeprom;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	void __user *userbuf = useraddr + sizeof(eeprom);
+	u32 bytes_remaining;
+	u8 *data;
+	int ret = 0;
+
+	if (!ops->set_eeprom || !ops->get_eeprom_len)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
+		return -EFAULT;
+
+	/* Check for wrap and zero */
+	if (eeprom.offset + eeprom.len <= eeprom.offset)
+		return -EINVAL;
+
+	/* Check for exceeding total eeprom len */
+	if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
+		return -EINVAL;
+
+	data = kmalloc(PAGE_SIZE, GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	bytes_remaining = eeprom.len;
+	while (bytes_remaining > 0) {
+		eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
+
+		if (copy_from_user(data, userbuf, eeprom.len)) {
+			ret = -EFAULT;
+			break;
+		}
+		ret = ops->set_eeprom(dev, &eeprom, data);
+		if (ret)
+			break;
+		userbuf += eeprom.len;
+		eeprom.offset += eeprom.len;
+		bytes_remaining -= eeprom.len;
+	}
+
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE };
+
+	if (!dev->ethtool_ops->get_coalesce)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_coalesce(dev, &coalesce);
+
+	if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_coalesce coalesce;
+
+	if (!dev->ethtool_ops->set_coalesce)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_coalesce(dev, &coalesce);
+}
+
+static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM };
+
+	if (!dev->ethtool_ops->get_ringparam)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_ringparam(dev, &ringparam);
+
+	if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_ringparam ringparam;
+
+	if (!dev->ethtool_ops->set_ringparam)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_ringparam(dev, &ringparam);
+}
+
+static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
+
+	if (!dev->ethtool_ops->get_pauseparam)
+		return -EOPNOTSUPP;
+
+	dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
+
+	if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_pauseparam pauseparam;
+
+	if (!dev->ethtool_ops->set_pauseparam)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
+}
+
+static int __ethtool_set_sg(struct net_device *dev, u32 data)
+{
+	int err;
+
+	if (!data && dev->ethtool_ops->set_tso) {
+		err = dev->ethtool_ops->set_tso(dev, 0);
+		if (err)
+			return err;
+	}
+
+	if (!data && dev->ethtool_ops->set_ufo) {
+		err = dev->ethtool_ops->set_ufo(dev, 0);
+		if (err)
+			return err;
+	}
+	return dev->ethtool_ops->set_sg(dev, data);
+}
+
+static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+	int err;
+
+	if (!dev->ethtool_ops->set_tx_csum)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (!edata.data && dev->ethtool_ops->set_sg) {
+		err = __ethtool_set_sg(dev, 0);
+		if (err)
+			return err;
+	}
+
+	return dev->ethtool_ops->set_tx_csum(dev, edata.data);
+}
+
+static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_rx_csum)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (!edata.data && dev->ethtool_ops->set_sg)
+		dev->features &= ~NETIF_F_GRO;
+
+	return dev->ethtool_ops->set_rx_csum(dev, edata.data);
+}
+
+static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_sg)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (edata.data &&
+	    !(dev->features & NETIF_F_ALL_CSUM))
+		return -EINVAL;
+
+	return __ethtool_set_sg(dev, edata.data);
+}
+
+static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_tso)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (edata.data && !(dev->features & NETIF_F_SG))
+		return -EINVAL;
+
+	return dev->ethtool_ops->set_tso(dev, edata.data);
+}
+
+static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (!dev->ethtool_ops->set_ufo)
+		return -EOPNOTSUPP;
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+	if (edata.data && !(dev->features & NETIF_F_SG))
+		return -EINVAL;
+	if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+		return -EINVAL;
+	return dev->ethtool_ops->set_ufo(dev, edata.data);
+}
+
+static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata = { ETHTOOL_GGSO };
+
+	edata.data = dev->features & NETIF_F_GSO;
+	if (copy_to_user(useraddr, &edata, sizeof(edata)))
+		 return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+	if (edata.data)
+		dev->features |= NETIF_F_GSO;
+	else
+		dev->features &= ~NETIF_F_GSO;
+	return 0;
+}
+
+static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata = { ETHTOOL_GGRO };
+
+	edata.data = dev->features & NETIF_F_GRO;
+	if (copy_to_user(useraddr, &edata, sizeof(edata)))
+		 return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value edata;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	if (edata.data) {
+		if (!dev->ethtool_ops->get_rx_csum ||
+		    !dev->ethtool_ops->get_rx_csum(dev))
+			return -EINVAL;
+		dev->features |= NETIF_F_GRO;
+	} else
+		dev->features &= ~NETIF_F_GRO;
+
+	return 0;
+}
+
+static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_test test;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	u64 *data;
+	int ret, test_len;
+
+	if (!ops->self_test)
+		return -EOPNOTSUPP;
+	if (!ops->get_sset_count && !ops->self_test_count)
+		return -EOPNOTSUPP;
+
+	if (ops->get_sset_count)
+		test_len = ops->get_sset_count(dev, ETH_SS_TEST);
+	else
+		/* code path for obsolete hook */
+		test_len = ops->self_test_count(dev);
+	if (test_len < 0)
+		return test_len;
+	WARN_ON(test_len == 0);
+
+	if (copy_from_user(&test, useraddr, sizeof(test)))
+		return -EFAULT;
+
+	test.len = test_len;
+	data = kmalloc(test_len * sizeof(u64), GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	ops->self_test(dev, &test, data);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &test, sizeof(test)))
+		goto out;
+	useraddr += sizeof(test);
+	if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_gstrings gstrings;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	u8 *data;
+	int ret;
+
+	if (!ops->get_strings)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
+		return -EFAULT;
+
+	if (ops->get_sset_count) {
+		ret = ops->get_sset_count(dev, gstrings.string_set);
+		if (ret < 0)
+			return ret;
+
+		gstrings.len = ret;
+	} else {
+		/* code path for obsolete hooks */
+
+		switch (gstrings.string_set) {
+		case ETH_SS_TEST:
+			if (!ops->self_test_count)
+				return -EOPNOTSUPP;
+			gstrings.len = ops->self_test_count(dev);
+			break;
+		case ETH_SS_STATS:
+			if (!ops->get_stats_count)
+				return -EOPNOTSUPP;
+			gstrings.len = ops->get_stats_count(dev);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	ops->get_strings(dev, gstrings.string_set, data);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
+		goto out;
+	useraddr += sizeof(gstrings);
+	if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_value id;
+
+	if (!dev->ethtool_ops->phys_id)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&id, useraddr, sizeof(id)))
+		return -EFAULT;
+
+	return dev->ethtool_ops->phys_id(dev, id.data);
+}
+
+static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_stats stats;
+	const struct ethtool_ops *ops = dev->ethtool_ops;
+	u64 *data;
+	int ret, n_stats;
+
+	if (!ops->get_ethtool_stats)
+		return -EOPNOTSUPP;
+	if (!ops->get_sset_count && !ops->get_stats_count)
+		return -EOPNOTSUPP;
+
+	if (ops->get_sset_count)
+		n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
+	else
+		/* code path for obsolete hook */
+		n_stats = ops->get_stats_count(dev);
+	if (n_stats < 0)
+		return n_stats;
+	WARN_ON(n_stats == 0);
+
+	if (copy_from_user(&stats, useraddr, sizeof(stats)))
+		return -EFAULT;
+
+	stats.n_stats = n_stats;
+	data = kmalloc(n_stats * sizeof(u64), GFP_USER);
+	if (!data)
+		return -ENOMEM;
+
+	ops->get_ethtool_stats(dev, &stats, data);
+
+	ret = -EFAULT;
+	if (copy_to_user(useraddr, &stats, sizeof(stats)))
+		goto out;
+	useraddr += sizeof(stats);
+	if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
+		goto out;
+	ret = 0;
+
+ out:
+	kfree(data);
+	return ret;
+}
+
+static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
+{
+	struct ethtool_perm_addr epaddr;
+
+	if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
+		return -EFAULT;
+
+	if (epaddr.size < dev->addr_len)
+		return -ETOOSMALL;
+	epaddr.size = dev->addr_len;
+
+	if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
+		return -EFAULT;
+	useraddr += sizeof(epaddr);
+	if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
+			     u32 cmd, u32 (*actor)(struct net_device *))
+{
+	struct ethtool_value edata = { cmd };
+
+	if (!actor)
+		return -EOPNOTSUPP;
+
+	edata.data = actor(dev);
+
+	if (copy_to_user(useraddr, &edata, sizeof(edata)))
+		return -EFAULT;
+	return 0;
+}
+
+static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
+			     void (*actor)(struct net_device *, u32))
+{
+	struct ethtool_value edata;
+
+	if (!actor)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	actor(dev, edata.data);
+	return 0;
+}
+
+static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
+			     int (*actor)(struct net_device *, u32))
+{
+	struct ethtool_value edata;
+
+	if (!actor)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&edata, useraddr, sizeof(edata)))
+		return -EFAULT;
+
+	return actor(dev, edata.data);
+}
+
+/* The main entry point in this file.  Called from net/core/dev.c */
+
+int dev_ethtool(struct net *net, struct ifreq *ifr)
+{
+	struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
+	void __user *useraddr = ifr->ifr_data;
+	u32 ethcmd;
+	int rc;
+	unsigned long old_features;
+
+	if (!dev || !netif_device_present(dev))
+		return -ENODEV;
+
+	if (!dev->ethtool_ops)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&ethcmd, useraddr, sizeof (ethcmd)))
+		return -EFAULT;
+
+	/* Allow some commands to be done by anyone */
+	switch(ethcmd) {
+	case ETHTOOL_GDRVINFO:
+	case ETHTOOL_GMSGLVL:
+	case ETHTOOL_GCOALESCE:
+	case ETHTOOL_GRINGPARAM:
+	case ETHTOOL_GPAUSEPARAM:
+	case ETHTOOL_GRXCSUM:
+	case ETHTOOL_GTXCSUM:
+	case ETHTOOL_GSG:
+	case ETHTOOL_GSTRINGS:
+	case ETHTOOL_GTSO:
+	case ETHTOOL_GPERMADDR:
+	case ETHTOOL_GUFO:
+	case ETHTOOL_GGSO:
+	case ETHTOOL_GFLAGS:
+	case ETHTOOL_GPFLAGS:
+	case ETHTOOL_GRXFH:
+		break;
+	default:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+	}
+
+	if (dev->ethtool_ops->begin)
+		if ((rc = dev->ethtool_ops->begin(dev)) < 0)
+			return rc;
+
+	old_features = dev->features;
+
+	switch (ethcmd) {
+	case ETHTOOL_GSET:
+		rc = ethtool_get_settings(dev, useraddr);
+		break;
+	case ETHTOOL_SSET:
+		rc = ethtool_set_settings(dev, useraddr);
+		break;
+	case ETHTOOL_GDRVINFO:
+		rc = ethtool_get_drvinfo(dev, useraddr);
+		break;
+	case ETHTOOL_GREGS:
+		rc = ethtool_get_regs(dev, useraddr);
+		break;
+	case ETHTOOL_GWOL:
+		rc = ethtool_get_wol(dev, useraddr);
+		break;
+	case ETHTOOL_SWOL:
+		rc = ethtool_set_wol(dev, useraddr);
+		break;
+	case ETHTOOL_GMSGLVL:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_msglevel);
+		break;
+	case ETHTOOL_SMSGLVL:
+		rc = ethtool_set_value_void(dev, useraddr,
+				       dev->ethtool_ops->set_msglevel);
+		break;
+	case ETHTOOL_NWAY_RST:
+		rc = ethtool_nway_reset(dev);
+		break;
+	case ETHTOOL_GLINK:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_link);
+		break;
+	case ETHTOOL_GEEPROM:
+		rc = ethtool_get_eeprom(dev, useraddr);
+		break;
+	case ETHTOOL_SEEPROM:
+		rc = ethtool_set_eeprom(dev, useraddr);
+		break;
+	case ETHTOOL_GCOALESCE:
+		rc = ethtool_get_coalesce(dev, useraddr);
+		break;
+	case ETHTOOL_SCOALESCE:
+		rc = ethtool_set_coalesce(dev, useraddr);
+		break;
+	case ETHTOOL_GRINGPARAM:
+		rc = ethtool_get_ringparam(dev, useraddr);
+		break;
+	case ETHTOOL_SRINGPARAM:
+		rc = ethtool_set_ringparam(dev, useraddr);
+		break;
+	case ETHTOOL_GPAUSEPARAM:
+		rc = ethtool_get_pauseparam(dev, useraddr);
+		break;
+	case ETHTOOL_SPAUSEPARAM:
+		rc = ethtool_set_pauseparam(dev, useraddr);
+		break;
+	case ETHTOOL_GRXCSUM:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_rx_csum);
+		break;
+	case ETHTOOL_SRXCSUM:
+		rc = ethtool_set_rx_csum(dev, useraddr);
+		break;
+	case ETHTOOL_GTXCSUM:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_tx_csum ?
+					dev->ethtool_ops->get_tx_csum :
+					ethtool_op_get_tx_csum));
+		break;
+	case ETHTOOL_STXCSUM:
+		rc = ethtool_set_tx_csum(dev, useraddr);
+		break;
+	case ETHTOOL_GSG:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_sg ?
+					dev->ethtool_ops->get_sg :
+					ethtool_op_get_sg));
+		break;
+	case ETHTOOL_SSG:
+		rc = ethtool_set_sg(dev, useraddr);
+		break;
+	case ETHTOOL_GTSO:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_tso ?
+					dev->ethtool_ops->get_tso :
+					ethtool_op_get_tso));
+		break;
+	case ETHTOOL_STSO:
+		rc = ethtool_set_tso(dev, useraddr);
+		break;
+	case ETHTOOL_TEST:
+		rc = ethtool_self_test(dev, useraddr);
+		break;
+	case ETHTOOL_GSTRINGS:
+		rc = ethtool_get_strings(dev, useraddr);
+		break;
+	case ETHTOOL_PHYS_ID:
+		rc = ethtool_phys_id(dev, useraddr);
+		break;
+	case ETHTOOL_GSTATS:
+		rc = ethtool_get_stats(dev, useraddr);
+		break;
+	case ETHTOOL_GPERMADDR:
+		rc = ethtool_get_perm_addr(dev, useraddr);
+		break;
+	case ETHTOOL_GUFO:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       (dev->ethtool_ops->get_ufo ?
+					dev->ethtool_ops->get_ufo :
+					ethtool_op_get_ufo));
+		break;
+	case ETHTOOL_SUFO:
+		rc = ethtool_set_ufo(dev, useraddr);
+		break;
+	case ETHTOOL_GGSO:
+		rc = ethtool_get_gso(dev, useraddr);
+		break;
+	case ETHTOOL_SGSO:
+		rc = ethtool_set_gso(dev, useraddr);
+		break;
+	case ETHTOOL_GFLAGS:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_flags);
+		break;
+	case ETHTOOL_SFLAGS:
+		rc = ethtool_set_value(dev, useraddr,
+				       dev->ethtool_ops->set_flags);
+		break;
+	case ETHTOOL_GPFLAGS:
+		rc = ethtool_get_value(dev, useraddr, ethcmd,
+				       dev->ethtool_ops->get_priv_flags);
+		break;
+	case ETHTOOL_SPFLAGS:
+		rc = ethtool_set_value(dev, useraddr,
+				       dev->ethtool_ops->set_priv_flags);
+		break;
+	case ETHTOOL_GRXFH:
+		rc = ethtool_get_rxhash(dev, useraddr);
+		break;
+	case ETHTOOL_SRXFH:
+		rc = ethtool_set_rxhash(dev, useraddr);
+		break;
+	case ETHTOOL_GGRO:
+		rc = ethtool_get_gro(dev, useraddr);
+		break;
+	case ETHTOOL_SGRO:
+		rc = ethtool_set_gro(dev, useraddr);
+		break;
+	default:
+		rc = -EOPNOTSUPP;
+	}
+
+	if (dev->ethtool_ops->complete)
+		dev->ethtool_ops->complete(dev);
+
+	if (old_features != dev->features)
+		netdev_features_change(dev);
+
+	return rc;
+}
+
+EXPORT_SYMBOL(ethtool_op_get_link);
+EXPORT_SYMBOL(ethtool_op_get_sg);
+EXPORT_SYMBOL(ethtool_op_get_tso);
+EXPORT_SYMBOL(ethtool_op_get_tx_csum);
+EXPORT_SYMBOL(ethtool_op_set_sg);
+EXPORT_SYMBOL(ethtool_op_set_tso);
+EXPORT_SYMBOL(ethtool_op_set_tx_csum);
+EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
+EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
+EXPORT_SYMBOL(ethtool_op_set_ufo);
+EXPORT_SYMBOL(ethtool_op_get_ufo);
+EXPORT_SYMBOL(ethtool_op_set_flags);
+EXPORT_SYMBOL(ethtool_op_get_flags);
diff --git a/libdde_linux26/contrib/net/core/filter.c b/libdde_linux26/contrib/net/core/filter.c
new file mode 100644
index 00000000..d1d779ca
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/filter.c
@@ -0,0 +1,541 @@
+/*
+ * Linux Socket Filter - Kernel level socket filtering
+ *
+ * Author:
+ *     Jay Schulist <jschlst@samba.org>
+ *
+ * Based on the design of:
+ *     - The Berkeley Packet Filter
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Andi Kleen - Fix a few bad bugs and races.
+ * Kris Katterjohn - Added many additional checks in sk_chk_filter()
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/fcntl.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/if_packet.h>
+#include <net/ip.h>
+#include <net/protocol.h>
+#include <net/netlink.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+#include <linux/filter.h>
+
+/* No hurry in this branch */
+static void *__load_pointer(struct sk_buff *skb, int k)
+{
+	u8 *ptr = NULL;
+
+	if (k >= SKF_NET_OFF)
+		ptr = skb_network_header(skb) + k - SKF_NET_OFF;
+	else if (k >= SKF_LL_OFF)
+		ptr = skb_mac_header(skb) + k - SKF_LL_OFF;
+
+	if (ptr >= skb->head && ptr < skb_tail_pointer(skb))
+		return ptr;
+	return NULL;
+}
+
+static inline void *load_pointer(struct sk_buff *skb, int k,
+				 unsigned int size, void *buffer)
+{
+	if (k >= 0)
+		return skb_header_pointer(skb, k, size, buffer);
+	else {
+		if (k >= SKF_AD_OFF)
+			return NULL;
+		return __load_pointer(skb, k);
+	}
+}
+
+/**
+ *	sk_filter - run a packet through a socket filter
+ *	@sk: sock associated with &sk_buff
+ *	@skb: buffer to filter
+ *
+ * Run the filter code and then cut skb->data to correct size returned by
+ * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller
+ * than pkt_len we keep whole skb->data. This is the socket level
+ * wrapper to sk_run_filter. It returns 0 if the packet should
+ * be accepted or -EPERM if the packet should be tossed.
+ *
+ */
+int sk_filter(struct sock *sk, struct sk_buff *skb)
+{
+	int err;
+	struct sk_filter *filter;
+
+	err = security_sock_rcv_skb(sk, skb);
+	if (err)
+		return err;
+
+	rcu_read_lock_bh();
+	filter = rcu_dereference(sk->sk_filter);
+	if (filter) {
+		unsigned int pkt_len = sk_run_filter(skb, filter->insns,
+				filter->len);
+		err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
+	}
+	rcu_read_unlock_bh();
+
+	return err;
+}
+EXPORT_SYMBOL(sk_filter);
+
+/**
+ *	sk_run_filter - run a filter on a socket
+ *	@skb: buffer to run the filter on
+ *	@filter: filter to apply
+ *	@flen: length of filter
+ *
+ * Decode and apply filter instructions to the skb->data.
+ * Return length to keep, 0 for none. skb is the data we are
+ * filtering, filter is the array of filter instructions, and
+ * len is the number of filter blocks in the array.
+ */
+unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen)
+{
+	struct sock_filter *fentry;	/* We walk down these */
+	void *ptr;
+	u32 A = 0;			/* Accumulator */
+	u32 X = 0;			/* Index Register */
+	u32 mem[BPF_MEMWORDS];		/* Scratch Memory Store */
+	u32 tmp;
+	int k;
+	int pc;
+
+	/*
+	 * Process array of filter instructions.
+	 */
+	for (pc = 0; pc < flen; pc++) {
+		fentry = &filter[pc];
+
+		switch (fentry->code) {
+		case BPF_ALU|BPF_ADD|BPF_X:
+			A += X;
+			continue;
+		case BPF_ALU|BPF_ADD|BPF_K:
+			A += fentry->k;
+			continue;
+		case BPF_ALU|BPF_SUB|BPF_X:
+			A -= X;
+			continue;
+		case BPF_ALU|BPF_SUB|BPF_K:
+			A -= fentry->k;
+			continue;
+		case BPF_ALU|BPF_MUL|BPF_X:
+			A *= X;
+			continue;
+		case BPF_ALU|BPF_MUL|BPF_K:
+			A *= fentry->k;
+			continue;
+		case BPF_ALU|BPF_DIV|BPF_X:
+			if (X == 0)
+				return 0;
+			A /= X;
+			continue;
+		case BPF_ALU|BPF_DIV|BPF_K:
+			A /= fentry->k;
+			continue;
+		case BPF_ALU|BPF_AND|BPF_X:
+			A &= X;
+			continue;
+		case BPF_ALU|BPF_AND|BPF_K:
+			A &= fentry->k;
+			continue;
+		case BPF_ALU|BPF_OR|BPF_X:
+			A |= X;
+			continue;
+		case BPF_ALU|BPF_OR|BPF_K:
+			A |= fentry->k;
+			continue;
+		case BPF_ALU|BPF_LSH|BPF_X:
+			A <<= X;
+			continue;
+		case BPF_ALU|BPF_LSH|BPF_K:
+			A <<= fentry->k;
+			continue;
+		case BPF_ALU|BPF_RSH|BPF_X:
+			A >>= X;
+			continue;
+		case BPF_ALU|BPF_RSH|BPF_K:
+			A >>= fentry->k;
+			continue;
+		case BPF_ALU|BPF_NEG:
+			A = -A;
+			continue;
+		case BPF_JMP|BPF_JA:
+			pc += fentry->k;
+			continue;
+		case BPF_JMP|BPF_JGT|BPF_K:
+			pc += (A > fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JGE|BPF_K:
+			pc += (A >= fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JEQ|BPF_K:
+			pc += (A == fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JSET|BPF_K:
+			pc += (A & fentry->k) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JGT|BPF_X:
+			pc += (A > X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JGE|BPF_X:
+			pc += (A >= X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JEQ|BPF_X:
+			pc += (A == X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_JMP|BPF_JSET|BPF_X:
+			pc += (A & X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_LD|BPF_W|BPF_ABS:
+			k = fentry->k;
+load_w:
+			ptr = load_pointer(skb, k, 4, &tmp);
+			if (ptr != NULL) {
+				A = get_unaligned_be32(ptr);
+				continue;
+			}
+			break;
+		case BPF_LD|BPF_H|BPF_ABS:
+			k = fentry->k;
+load_h:
+			ptr = load_pointer(skb, k, 2, &tmp);
+			if (ptr != NULL) {
+				A = get_unaligned_be16(ptr);
+				continue;
+			}
+			break;
+		case BPF_LD|BPF_B|BPF_ABS:
+			k = fentry->k;
+load_b:
+			ptr = load_pointer(skb, k, 1, &tmp);
+			if (ptr != NULL) {
+				A = *(u8 *)ptr;
+				continue;
+			}
+			break;
+		case BPF_LD|BPF_W|BPF_LEN:
+			A = skb->len;
+			continue;
+		case BPF_LDX|BPF_W|BPF_LEN:
+			X = skb->len;
+			continue;
+		case BPF_LD|BPF_W|BPF_IND:
+			k = X + fentry->k;
+			goto load_w;
+		case BPF_LD|BPF_H|BPF_IND:
+			k = X + fentry->k;
+			goto load_h;
+		case BPF_LD|BPF_B|BPF_IND:
+			k = X + fentry->k;
+			goto load_b;
+		case BPF_LDX|BPF_B|BPF_MSH:
+			ptr = load_pointer(skb, fentry->k, 1, &tmp);
+			if (ptr != NULL) {
+				X = (*(u8 *)ptr & 0xf) << 2;
+				continue;
+			}
+			return 0;
+		case BPF_LD|BPF_IMM:
+			A = fentry->k;
+			continue;
+		case BPF_LDX|BPF_IMM:
+			X = fentry->k;
+			continue;
+		case BPF_LD|BPF_MEM:
+			A = mem[fentry->k];
+			continue;
+		case BPF_LDX|BPF_MEM:
+			X = mem[fentry->k];
+			continue;
+		case BPF_MISC|BPF_TAX:
+			X = A;
+			continue;
+		case BPF_MISC|BPF_TXA:
+			A = X;
+			continue;
+		case BPF_RET|BPF_K:
+			return fentry->k;
+		case BPF_RET|BPF_A:
+			return A;
+		case BPF_ST:
+			mem[fentry->k] = A;
+			continue;
+		case BPF_STX:
+			mem[fentry->k] = X;
+			continue;
+		default:
+			WARN_ON(1);
+			return 0;
+		}
+
+		/*
+		 * Handle ancillary data, which are impossible
+		 * (or very difficult) to get parsing packet contents.
+		 */
+		switch (k-SKF_AD_OFF) {
+		case SKF_AD_PROTOCOL:
+			A = ntohs(skb->protocol);
+			continue;
+		case SKF_AD_PKTTYPE:
+			A = skb->pkt_type;
+			continue;
+		case SKF_AD_IFINDEX:
+			A = skb->dev->ifindex;
+			continue;
+		case SKF_AD_NLATTR: {
+			struct nlattr *nla;
+
+			if (skb_is_nonlinear(skb))
+				return 0;
+			if (A > skb->len - sizeof(struct nlattr))
+				return 0;
+
+			nla = nla_find((struct nlattr *)&skb->data[A],
+				       skb->len - A, X);
+			if (nla)
+				A = (void *)nla - (void *)skb->data;
+			else
+				A = 0;
+			continue;
+		}
+		case SKF_AD_NLATTR_NEST: {
+			struct nlattr *nla;
+
+			if (skb_is_nonlinear(skb))
+				return 0;
+			if (A > skb->len - sizeof(struct nlattr))
+				return 0;
+
+			nla = (struct nlattr *)&skb->data[A];
+			if (nla->nla_len > A - skb->len)
+				return 0;
+
+			nla = nla_find_nested(nla, X);
+			if (nla)
+				A = (void *)nla - (void *)skb->data;
+			else
+				A = 0;
+			continue;
+		}
+		default:
+			return 0;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(sk_run_filter);
+
+/**
+ *	sk_chk_filter - verify socket filter code
+ *	@filter: filter to verify
+ *	@flen: length of filter
+ *
+ * Check the user's filter code. If we let some ugly
+ * filter code slip through kaboom! The filter must contain
+ * no references or jumps that are out of range, no illegal
+ * instructions, and must end with a RET instruction.
+ *
+ * All jumps are forward as they are not signed.
+ *
+ * Returns 0 if the rule set is legal or -EINVAL if not.
+ */
+int sk_chk_filter(struct sock_filter *filter, int flen)
+{
+	struct sock_filter *ftest;
+	int pc;
+
+	if (flen == 0 || flen > BPF_MAXINSNS)
+		return -EINVAL;
+
+	/* check the filter code now */
+	for (pc = 0; pc < flen; pc++) {
+		ftest = &filter[pc];
+
+		/* Only allow valid instructions */
+		switch (ftest->code) {
+		case BPF_ALU|BPF_ADD|BPF_K:
+		case BPF_ALU|BPF_ADD|BPF_X:
+		case BPF_ALU|BPF_SUB|BPF_K:
+		case BPF_ALU|BPF_SUB|BPF_X:
+		case BPF_ALU|BPF_MUL|BPF_K:
+		case BPF_ALU|BPF_MUL|BPF_X:
+		case BPF_ALU|BPF_DIV|BPF_X:
+		case BPF_ALU|BPF_AND|BPF_K:
+		case BPF_ALU|BPF_AND|BPF_X:
+		case BPF_ALU|BPF_OR|BPF_K:
+		case BPF_ALU|BPF_OR|BPF_X:
+		case BPF_ALU|BPF_LSH|BPF_K:
+		case BPF_ALU|BPF_LSH|BPF_X:
+		case BPF_ALU|BPF_RSH|BPF_K:
+		case BPF_ALU|BPF_RSH|BPF_X:
+		case BPF_ALU|BPF_NEG:
+		case BPF_LD|BPF_W|BPF_ABS:
+		case BPF_LD|BPF_H|BPF_ABS:
+		case BPF_LD|BPF_B|BPF_ABS:
+		case BPF_LD|BPF_W|BPF_LEN:
+		case BPF_LD|BPF_W|BPF_IND:
+		case BPF_LD|BPF_H|BPF_IND:
+		case BPF_LD|BPF_B|BPF_IND:
+		case BPF_LD|BPF_IMM:
+		case BPF_LDX|BPF_W|BPF_LEN:
+		case BPF_LDX|BPF_B|BPF_MSH:
+		case BPF_LDX|BPF_IMM:
+		case BPF_MISC|BPF_TAX:
+		case BPF_MISC|BPF_TXA:
+		case BPF_RET|BPF_K:
+		case BPF_RET|BPF_A:
+			break;
+
+		/* Some instructions need special checks */
+
+		case BPF_ALU|BPF_DIV|BPF_K:
+			/* check for division by zero */
+			if (ftest->k == 0)
+				return -EINVAL;
+			break;
+
+		case BPF_LD|BPF_MEM:
+		case BPF_LDX|BPF_MEM:
+		case BPF_ST:
+		case BPF_STX:
+			/* check for invalid memory addresses */
+			if (ftest->k >= BPF_MEMWORDS)
+				return -EINVAL;
+			break;
+
+		case BPF_JMP|BPF_JA:
+			/*
+			 * Note, the large ftest->k might cause loops.
+			 * Compare this with conditional jumps below,
+			 * where offsets are limited. --ANK (981016)
+			 */
+			if (ftest->k >= (unsigned)(flen-pc-1))
+				return -EINVAL;
+			break;
+
+		case BPF_JMP|BPF_JEQ|BPF_K:
+		case BPF_JMP|BPF_JEQ|BPF_X:
+		case BPF_JMP|BPF_JGE|BPF_K:
+		case BPF_JMP|BPF_JGE|BPF_X:
+		case BPF_JMP|BPF_JGT|BPF_K:
+		case BPF_JMP|BPF_JGT|BPF_X:
+		case BPF_JMP|BPF_JSET|BPF_K:
+		case BPF_JMP|BPF_JSET|BPF_X:
+			/* for conditionals both must be safe */
+			if (pc + ftest->jt + 1 >= flen ||
+			    pc + ftest->jf + 1 >= flen)
+				return -EINVAL;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
+}
+EXPORT_SYMBOL(sk_chk_filter);
+
+/**
+ * 	sk_filter_rcu_release: Release a socket filter by rcu_head
+ *	@rcu: rcu_head that contains the sk_filter to free
+ */
+static void sk_filter_rcu_release(struct rcu_head *rcu)
+{
+	struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
+
+	sk_filter_release(fp);
+}
+
+static void sk_filter_delayed_uncharge(struct sock *sk, struct sk_filter *fp)
+{
+	unsigned int size = sk_filter_len(fp);
+
+	atomic_sub(size, &sk->sk_omem_alloc);
+	call_rcu_bh(&fp->rcu, sk_filter_rcu_release);
+}
+
+/**
+ *	sk_attach_filter - attach a socket filter
+ *	@fprog: the filter program
+ *	@sk: the socket to use
+ *
+ * Attach the user's filter code. We first run some sanity checks on
+ * it to make sure it does not explode on us later. If an error
+ * occurs or there is insufficient memory for the filter a negative
+ * errno code is returned. On success the return is zero.
+ */
+int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
+{
+	struct sk_filter *fp, *old_fp;
+	unsigned int fsize = sizeof(struct sock_filter) * fprog->len;
+	int err;
+
+	/* Make sure new filter is there and in the right amounts. */
+	if (fprog->filter == NULL)
+		return -EINVAL;
+
+	fp = sock_kmalloc(sk, fsize+sizeof(*fp), GFP_KERNEL);
+	if (!fp)
+		return -ENOMEM;
+	if (copy_from_user(fp->insns, fprog->filter, fsize)) {
+		sock_kfree_s(sk, fp, fsize+sizeof(*fp));
+		return -EFAULT;
+	}
+
+	atomic_set(&fp->refcnt, 1);
+	fp->len = fprog->len;
+
+	err = sk_chk_filter(fp->insns, fp->len);
+	if (err) {
+		sk_filter_uncharge(sk, fp);
+		return err;
+	}
+
+	rcu_read_lock_bh();
+	old_fp = rcu_dereference(sk->sk_filter);
+	rcu_assign_pointer(sk->sk_filter, fp);
+	rcu_read_unlock_bh();
+
+	if (old_fp)
+		sk_filter_delayed_uncharge(sk, old_fp);
+	return 0;
+}
+
+int sk_detach_filter(struct sock *sk)
+{
+	int ret = -ENOENT;
+	struct sk_filter *filter;
+
+	rcu_read_lock_bh();
+	filter = rcu_dereference(sk->sk_filter);
+	if (filter) {
+		rcu_assign_pointer(sk->sk_filter, NULL);
+		sk_filter_delayed_uncharge(sk, filter);
+		ret = 0;
+	}
+	rcu_read_unlock_bh();
+	return ret;
+}
diff --git a/libdde_linux26/contrib/net/core/kmap_skb.h b/libdde_linux26/contrib/net/core/kmap_skb.h
new file mode 100644
index 00000000..283c2b99
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/kmap_skb.h
@@ -0,0 +1,19 @@
+#include <linux/highmem.h>
+
+static inline void *kmap_skb_frag(const skb_frag_t *frag)
+{
+#ifdef CONFIG_HIGHMEM
+	BUG_ON(in_irq());
+
+	local_bh_disable();
+#endif
+	return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
+}
+
+static inline void kunmap_skb_frag(void *vaddr)
+{
+	kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
+#ifdef CONFIG_HIGHMEM
+	local_bh_enable();
+#endif
+}
diff --git a/libdde_linux26/contrib/net/core/neighbour.c b/libdde_linux26/contrib/net/core/neighbour.c
new file mode 100644
index 00000000..278a142d
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/neighbour.c
@@ -0,0 +1,2824 @@
+/*
+ *	Generic address resolution entity
+ *
+ *	Authors:
+ *	Pedro Roque		<roque@di.fc.ul.pt>
+ *	Alexey Kuznetsov	<kuznet@ms2.inr.ac.ru>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *	Fixes:
+ *	Vitaly E. Lavrov	releasing NULL neighbor in neigh_add.
+ *	Harald Welte		Add neighbour cache statistics like rtstat
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/socket.h>
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#ifdef CONFIG_SYSCTL
+#include <linux/sysctl.h>
+#endif
+#include <linux/times.h>
+#include <net/net_namespace.h>
+#include <net/neighbour.h>
+#include <net/dst.h>
+#include <net/sock.h>
+#include <net/netevent.h>
+#include <net/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/random.h>
+#include <linux/string.h>
+#include <linux/log2.h>
+
+#define NEIGH_DEBUG 1
+
+#define NEIGH_PRINTK(x...) printk(x)
+#define NEIGH_NOPRINTK(x...) do { ; } while(0)
+#define NEIGH_PRINTK0 NEIGH_PRINTK
+#define NEIGH_PRINTK1 NEIGH_NOPRINTK
+#define NEIGH_PRINTK2 NEIGH_NOPRINTK
+
+#if NEIGH_DEBUG >= 1
+#undef NEIGH_PRINTK1
+#define NEIGH_PRINTK1 NEIGH_PRINTK
+#endif
+#if NEIGH_DEBUG >= 2
+#undef NEIGH_PRINTK2
+#define NEIGH_PRINTK2 NEIGH_PRINTK
+#endif
+
+#define PNEIGH_HASHMASK		0xF
+
+static void neigh_timer_handler(unsigned long arg);
+static void __neigh_notify(struct neighbour *n, int type, int flags);
+static void neigh_update_notify(struct neighbour *neigh);
+static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev);
+
+static struct neigh_table *neigh_tables;
+#ifdef CONFIG_PROC_FS
+static const struct file_operations neigh_stat_seq_fops;
+#endif
+
+/*
+   Neighbour hash table buckets are protected with rwlock tbl->lock.
+
+   - All the scans/updates to hash buckets MUST be made under this lock.
+   - NOTHING clever should be made under this lock: no callbacks
+     to protocol backends, no attempts to send something to network.
+     It will result in deadlocks, if backend/driver wants to use neighbour
+     cache.
+   - If the entry requires some non-trivial actions, increase
+     its reference count and release table lock.
+
+   Neighbour entries are protected:
+   - with reference count.
+   - with rwlock neigh->lock
+
+   Reference count prevents destruction.
+
+   neigh->lock mainly serializes ll address data and its validity state.
+   However, the same lock is used to protect another entry fields:
+    - timer
+    - resolution queue
+
+   Again, nothing clever shall be made under neigh->lock,
+   the most complicated procedure, which we allow is dev->hard_header.
+   It is supposed, that dev->hard_header is simplistic and does
+   not make callbacks to neighbour tables.
+
+   The last lock is neigh_tbl_lock. It is pure SMP lock, protecting
+   list of neighbour tables. This list is used only in process context,
+ */
+
+static DEFINE_RWLOCK(neigh_tbl_lock);
+
+static int neigh_blackhole(struct sk_buff *skb)
+{
+	kfree_skb(skb);
+	return -ENETDOWN;
+}
+
+static void neigh_cleanup_and_release(struct neighbour *neigh)
+{
+	if (neigh->parms->neigh_cleanup)
+		neigh->parms->neigh_cleanup(neigh);
+
+	__neigh_notify(neigh, RTM_DELNEIGH, 0);
+	neigh_release(neigh);
+}
+
+/*
+ * It is random distribution in the interval (1/2)*base...(3/2)*base.
+ * It corresponds to default IPv6 settings and is not overridable,
+ * because it is really reasonable choice.
+ */
+
+unsigned long neigh_rand_reach_time(unsigned long base)
+{
+	return (base ? (net_random() % base) + (base >> 1) : 0);
+}
+EXPORT_SYMBOL(neigh_rand_reach_time);
+
+
+static int neigh_forced_gc(struct neigh_table *tbl)
+{
+	int shrunk = 0;
+	int i;
+
+	NEIGH_CACHE_STAT_INC(tbl, forced_gc_runs);
+
+	write_lock_bh(&tbl->lock);
+	for (i = 0; i <= tbl->hash_mask; i++) {
+		struct neighbour *n, **np;
+
+		np = &tbl->hash_buckets[i];
+		while ((n = *np) != NULL) {
+			/* Neighbour record may be discarded if:
+			 * - nobody refers to it.
+			 * - it is not permanent
+			 */
+			write_lock(&n->lock);
+			if (atomic_read(&n->refcnt) == 1 &&
+			    !(n->nud_state & NUD_PERMANENT)) {
+				*np	= n->next;
+				n->dead = 1;
+				shrunk	= 1;
+				write_unlock(&n->lock);
+				neigh_cleanup_and_release(n);
+				continue;
+			}
+			write_unlock(&n->lock);
+			np = &n->next;
+		}
+	}
+
+	tbl->last_flush = jiffies;
+
+	write_unlock_bh(&tbl->lock);
+
+	return shrunk;
+}
+
+static void neigh_add_timer(struct neighbour *n, unsigned long when)
+{
+	neigh_hold(n);
+	if (unlikely(mod_timer(&n->timer, when))) {
+		printk("NEIGH: BUG, double timer add, state is %x\n",
+		       n->nud_state);
+		dump_stack();
+	}
+}
+
+static int neigh_del_timer(struct neighbour *n)
+{
+	if ((n->nud_state & NUD_IN_TIMER) &&
+	    del_timer(&n->timer)) {
+		neigh_release(n);
+		return 1;
+	}
+	return 0;
+}
+
+static void pneigh_queue_purge(struct sk_buff_head *list)
+{
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(list)) != NULL) {
+		dev_put(skb->dev);
+		kfree_skb(skb);
+	}
+}
+
+static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev)
+{
+	int i;
+
+	for (i = 0; i <= tbl->hash_mask; i++) {
+		struct neighbour *n, **np = &tbl->hash_buckets[i];
+
+		while ((n = *np) != NULL) {
+			if (dev && n->dev != dev) {
+				np = &n->next;
+				continue;
+			}
+			*np = n->next;
+			write_lock(&n->lock);
+			neigh_del_timer(n);
+			n->dead = 1;
+
+			if (atomic_read(&n->refcnt) != 1) {
+				/* The most unpleasant situation.
+				   We must destroy neighbour entry,
+				   but someone still uses it.
+
+				   The destroy will be delayed until
+				   the last user releases us, but
+				   we must kill timers etc. and move
+				   it to safe state.
+				 */
+				skb_queue_purge(&n->arp_queue);
+				n->output = neigh_blackhole;
+				if (n->nud_state & NUD_VALID)
+					n->nud_state = NUD_NOARP;
+				else
+					n->nud_state = NUD_NONE;
+				NEIGH_PRINTK2("neigh %p is stray.\n", n);
+			}
+			write_unlock(&n->lock);
+			neigh_cleanup_and_release(n);
+		}
+	}
+}
+
+void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev)
+{
+	write_lock_bh(&tbl->lock);
+	neigh_flush_dev(tbl, dev);
+	write_unlock_bh(&tbl->lock);
+}
+EXPORT_SYMBOL(neigh_changeaddr);
+
+int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
+{
+	write_lock_bh(&tbl->lock);
+	neigh_flush_dev(tbl, dev);
+	pneigh_ifdown(tbl, dev);
+	write_unlock_bh(&tbl->lock);
+
+	del_timer_sync(&tbl->proxy_timer);
+	pneigh_queue_purge(&tbl->proxy_queue);
+	return 0;
+}
+EXPORT_SYMBOL(neigh_ifdown);
+
+static struct neighbour *neigh_alloc(struct neigh_table *tbl)
+{
+	struct neighbour *n = NULL;
+	unsigned long now = jiffies;
+	int entries;
+
+	entries = atomic_inc_return(&tbl->entries) - 1;
+	if (entries >= tbl->gc_thresh3 ||
+	    (entries >= tbl->gc_thresh2 &&
+	     time_after(now, tbl->last_flush + 5 * HZ))) {
+		if (!neigh_forced_gc(tbl) &&
+		    entries >= tbl->gc_thresh3)
+			goto out_entries;
+	}
+
+	n = kmem_cache_zalloc(tbl->kmem_cachep, GFP_ATOMIC);
+	if (!n)
+		goto out_entries;
+
+	skb_queue_head_init(&n->arp_queue);
+	rwlock_init(&n->lock);
+	n->updated	  = n->used = now;
+	n->nud_state	  = NUD_NONE;
+	n->output	  = neigh_blackhole;
+	n->parms	  = neigh_parms_clone(&tbl->parms);
+	setup_timer(&n->timer, neigh_timer_handler, (unsigned long)n);
+
+	NEIGH_CACHE_STAT_INC(tbl, allocs);
+	n->tbl		  = tbl;
+	atomic_set(&n->refcnt, 1);
+	n->dead		  = 1;
+out:
+	return n;
+
+out_entries:
+	atomic_dec(&tbl->entries);
+	goto out;
+}
+
+static struct neighbour **neigh_hash_alloc(unsigned int entries)
+{
+	unsigned long size = entries * sizeof(struct neighbour *);
+	struct neighbour **ret;
+
+	if (size <= PAGE_SIZE) {
+		ret = kzalloc(size, GFP_ATOMIC);
+	} else {
+		ret = (struct neighbour **)
+		      __get_free_pages(GFP_ATOMIC|__GFP_ZERO, get_order(size));
+	}
+	return ret;
+}
+
+static void neigh_hash_free(struct neighbour **hash, unsigned int entries)
+{
+	unsigned long size = entries * sizeof(struct neighbour *);
+
+	if (size <= PAGE_SIZE)
+		kfree(hash);
+	else
+		free_pages((unsigned long)hash, get_order(size));
+}
+
+static void neigh_hash_grow(struct neigh_table *tbl, unsigned long new_entries)
+{
+	struct neighbour **new_hash, **old_hash;
+	unsigned int i, new_hash_mask, old_entries;
+
+	NEIGH_CACHE_STAT_INC(tbl, hash_grows);
+
+	BUG_ON(!is_power_of_2(new_entries));
+	new_hash = neigh_hash_alloc(new_entries);
+	if (!new_hash)
+		return;
+
+	old_entries = tbl->hash_mask + 1;
+	new_hash_mask = new_entries - 1;
+	old_hash = tbl->hash_buckets;
+
+	get_random_bytes(&tbl->hash_rnd, sizeof(tbl->hash_rnd));
+	for (i = 0; i < old_entries; i++) {
+		struct neighbour *n, *next;
+
+		for (n = old_hash[i]; n; n = next) {
+			unsigned int hash_val = tbl->hash(n->primary_key, n->dev);
+
+			hash_val &= new_hash_mask;
+			next = n->next;
+
+			n->next = new_hash[hash_val];
+			new_hash[hash_val] = n;
+		}
+	}
+	tbl->hash_buckets = new_hash;
+	tbl->hash_mask = new_hash_mask;
+
+	neigh_hash_free(old_hash, old_entries);
+}
+
+struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey,
+			       struct net_device *dev)
+{
+	struct neighbour *n;
+	int key_len = tbl->key_len;
+	u32 hash_val;
+
+	NEIGH_CACHE_STAT_INC(tbl, lookups);
+
+	read_lock_bh(&tbl->lock);
+	hash_val = tbl->hash(pkey, dev);
+	for (n = tbl->hash_buckets[hash_val & tbl->hash_mask]; n; n = n->next) {
+		if (dev == n->dev && !memcmp(n->primary_key, pkey, key_len)) {
+			neigh_hold(n);
+			NEIGH_CACHE_STAT_INC(tbl, hits);
+			break;
+		}
+	}
+	read_unlock_bh(&tbl->lock);
+	return n;
+}
+EXPORT_SYMBOL(neigh_lookup);
+
+struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net,
+				     const void *pkey)
+{
+	struct neighbour *n;
+	int key_len = tbl->key_len;
+	u32 hash_val;
+
+	NEIGH_CACHE_STAT_INC(tbl, lookups);
+
+	read_lock_bh(&tbl->lock);
+	hash_val = tbl->hash(pkey, NULL);
+	for (n = tbl->hash_buckets[hash_val & tbl->hash_mask]; n; n = n->next) {
+		if (!memcmp(n->primary_key, pkey, key_len) &&
+		    net_eq(dev_net(n->dev), net)) {
+			neigh_hold(n);
+			NEIGH_CACHE_STAT_INC(tbl, hits);
+			break;
+		}
+	}
+	read_unlock_bh(&tbl->lock);
+	return n;
+}
+EXPORT_SYMBOL(neigh_lookup_nodev);
+
+struct neighbour *neigh_create(struct neigh_table *tbl, const void *pkey,
+			       struct net_device *dev)
+{
+	u32 hash_val;
+	int key_len = tbl->key_len;
+	int error;
+	struct neighbour *n1, *rc, *n = neigh_alloc(tbl);
+
+	if (!n) {
+		rc = ERR_PTR(-ENOBUFS);
+		goto out;
+	}
+
+	memcpy(n->primary_key, pkey, key_len);
+	n->dev = dev;
+	dev_hold(dev);
+
+	/* Protocol specific setup. */
+	if (tbl->constructor &&	(error = tbl->constructor(n)) < 0) {
+		rc = ERR_PTR(error);
+		goto out_neigh_release;
+	}
+
+	/* Device specific setup. */
+	if (n->parms->neigh_setup &&
+	    (error = n->parms->neigh_setup(n)) < 0) {
+		rc = ERR_PTR(error);
+		goto out_neigh_release;
+	}
+
+	n->confirmed = jiffies - (n->parms->base_reachable_time << 1);
+
+	write_lock_bh(&tbl->lock);
+
+	if (atomic_read(&tbl->entries) > (tbl->hash_mask + 1))
+		neigh_hash_grow(tbl, (tbl->hash_mask + 1) << 1);
+
+	hash_val = tbl->hash(pkey, dev) & tbl->hash_mask;
+
+	if (n->parms->dead) {
+		rc = ERR_PTR(-EINVAL);
+		goto out_tbl_unlock;
+	}
+
+	for (n1 = tbl->hash_buckets[hash_val]; n1; n1 = n1->next) {
+		if (dev == n1->dev && !memcmp(n1->primary_key, pkey, key_len)) {
+			neigh_hold(n1);
+			rc = n1;
+			goto out_tbl_unlock;
+		}
+	}
+
+	n->next = tbl->hash_buckets[hash_val];
+	tbl->hash_buckets[hash_val] = n;
+	n->dead = 0;
+	neigh_hold(n);
+	write_unlock_bh(&tbl->lock);
+	NEIGH_PRINTK2("neigh %p is created.\n", n);
+	rc = n;
+out:
+	return rc;
+out_tbl_unlock:
+	write_unlock_bh(&tbl->lock);
+out_neigh_release:
+	neigh_release(n);
+	goto out;
+}
+EXPORT_SYMBOL(neigh_create);
+
+static u32 pneigh_hash(const void *pkey, int key_len)
+{
+	u32 hash_val = *(u32 *)(pkey + key_len - 4);
+	hash_val ^= (hash_val >> 16);
+	hash_val ^= hash_val >> 8;
+	hash_val ^= hash_val >> 4;
+	hash_val &= PNEIGH_HASHMASK;
+	return hash_val;
+}
+
+static struct pneigh_entry *__pneigh_lookup_1(struct pneigh_entry *n,
+					      struct net *net,
+					      const void *pkey,
+					      int key_len,
+					      struct net_device *dev)
+{
+	while (n) {
+		if (!memcmp(n->key, pkey, key_len) &&
+		    net_eq(pneigh_net(n), net) &&
+		    (n->dev == dev || !n->dev))
+			return n;
+		n = n->next;
+	}
+	return NULL;
+}
+
+struct pneigh_entry *__pneigh_lookup(struct neigh_table *tbl,
+		struct net *net, const void *pkey, struct net_device *dev)
+{
+	int key_len = tbl->key_len;
+	u32 hash_val = pneigh_hash(pkey, key_len);
+
+	return __pneigh_lookup_1(tbl->phash_buckets[hash_val],
+				 net, pkey, key_len, dev);
+}
+EXPORT_SYMBOL_GPL(__pneigh_lookup);
+
+struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
+				    struct net *net, const void *pkey,
+				    struct net_device *dev, int creat)
+{
+	struct pneigh_entry *n;
+	int key_len = tbl->key_len;
+	u32 hash_val = pneigh_hash(pkey, key_len);
+
+	read_lock_bh(&tbl->lock);
+	n = __pneigh_lookup_1(tbl->phash_buckets[hash_val],
+			      net, pkey, key_len, dev);
+	read_unlock_bh(&tbl->lock);
+
+	if (n || !creat)
+		goto out;
+
+	ASSERT_RTNL();
+
+	n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
+	if (!n)
+		goto out;
+
+	write_pnet(&n->net, hold_net(net));
+	memcpy(n->key, pkey, key_len);
+	n->dev = dev;
+	if (dev)
+		dev_hold(dev);
+
+	if (tbl->pconstructor && tbl->pconstructor(n)) {
+		if (dev)
+			dev_put(dev);
+		release_net(net);
+		kfree(n);
+		n = NULL;
+		goto out;
+	}
+
+	write_lock_bh(&tbl->lock);
+	n->next = tbl->phash_buckets[hash_val];
+	tbl->phash_buckets[hash_val] = n;
+	write_unlock_bh(&tbl->lock);
+out:
+	return n;
+}
+EXPORT_SYMBOL(pneigh_lookup);
+
+
+int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *pkey,
+		  struct net_device *dev)
+{
+	struct pneigh_entry *n, **np;
+	int key_len = tbl->key_len;
+	u32 hash_val = pneigh_hash(pkey, key_len);
+
+	write_lock_bh(&tbl->lock);
+	for (np = &tbl->phash_buckets[hash_val]; (n = *np) != NULL;
+	     np = &n->next) {
+		if (!memcmp(n->key, pkey, key_len) && n->dev == dev &&
+		    net_eq(pneigh_net(n), net)) {
+			*np = n->next;
+			write_unlock_bh(&tbl->lock);
+			if (tbl->pdestructor)
+				tbl->pdestructor(n);
+			if (n->dev)
+				dev_put(n->dev);
+			release_net(pneigh_net(n));
+			kfree(n);
+			return 0;
+		}
+	}
+	write_unlock_bh(&tbl->lock);
+	return -ENOENT;
+}
+
+static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
+{
+	struct pneigh_entry *n, **np;
+	u32 h;
+
+	for (h = 0; h <= PNEIGH_HASHMASK; h++) {
+		np = &tbl->phash_buckets[h];
+		while ((n = *np) != NULL) {
+			if (!dev || n->dev == dev) {
+				*np = n->next;
+				if (tbl->pdestructor)
+					tbl->pdestructor(n);
+				if (n->dev)
+					dev_put(n->dev);
+				release_net(pneigh_net(n));
+				kfree(n);
+				continue;
+			}
+			np = &n->next;
+		}
+	}
+	return -ENOENT;
+}
+
+static void neigh_parms_destroy(struct neigh_parms *parms);
+
+static inline void neigh_parms_put(struct neigh_parms *parms)
+{
+	if (atomic_dec_and_test(&parms->refcnt))
+		neigh_parms_destroy(parms);
+}
+
+/*
+ *	neighbour must already be out of the table;
+ *
+ */
+void neigh_destroy(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+
+	NEIGH_CACHE_STAT_INC(neigh->tbl, destroys);
+
+	if (!neigh->dead) {
+		printk(KERN_WARNING
+		       "Destroying alive neighbour %p\n", neigh);
+		dump_stack();
+		return;
+	}
+
+	if (neigh_del_timer(neigh))
+		printk(KERN_WARNING "Impossible event.\n");
+
+	while ((hh = neigh->hh) != NULL) {
+		neigh->hh = hh->hh_next;
+		hh->hh_next = NULL;
+
+		write_seqlock_bh(&hh->hh_lock);
+		hh->hh_output = neigh_blackhole;
+		write_sequnlock_bh(&hh->hh_lock);
+		if (atomic_dec_and_test(&hh->hh_refcnt))
+			kfree(hh);
+	}
+
+	skb_queue_purge(&neigh->arp_queue);
+
+	dev_put(neigh->dev);
+	neigh_parms_put(neigh->parms);
+
+	NEIGH_PRINTK2("neigh %p is destroyed.\n", neigh);
+
+	atomic_dec(&neigh->tbl->entries);
+	kmem_cache_free(neigh->tbl->kmem_cachep, neigh);
+}
+EXPORT_SYMBOL(neigh_destroy);
+
+/* Neighbour state is suspicious;
+   disable fast path.
+
+   Called with write_locked neigh.
+ */
+static void neigh_suspect(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+
+	NEIGH_PRINTK2("neigh %p is suspected.\n", neigh);
+
+	neigh->output = neigh->ops->output;
+
+	for (hh = neigh->hh; hh; hh = hh->hh_next)
+		hh->hh_output = neigh->ops->output;
+}
+
+/* Neighbour state is OK;
+   enable fast path.
+
+   Called with write_locked neigh.
+ */
+static void neigh_connect(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+
+	NEIGH_PRINTK2("neigh %p is connected.\n", neigh);
+
+	neigh->output = neigh->ops->connected_output;
+
+	for (hh = neigh->hh; hh; hh = hh->hh_next)
+		hh->hh_output = neigh->ops->hh_output;
+}
+
+static void neigh_periodic_timer(unsigned long arg)
+{
+	struct neigh_table *tbl = (struct neigh_table *)arg;
+	struct neighbour *n, **np;
+	unsigned long expire, now = jiffies;
+
+	NEIGH_CACHE_STAT_INC(tbl, periodic_gc_runs);
+
+	write_lock(&tbl->lock);
+
+	/*
+	 *	periodically recompute ReachableTime from random function
+	 */
+
+	if (time_after(now, tbl->last_rand + 300 * HZ)) {
+		struct neigh_parms *p;
+		tbl->last_rand = now;
+		for (p = &tbl->parms; p; p = p->next)
+			p->reachable_time =
+				neigh_rand_reach_time(p->base_reachable_time);
+	}
+
+	np = &tbl->hash_buckets[tbl->hash_chain_gc];
+	tbl->hash_chain_gc = ((tbl->hash_chain_gc + 1) & tbl->hash_mask);
+
+	while ((n = *np) != NULL) {
+		unsigned int state;
+
+		write_lock(&n->lock);
+
+		state = n->nud_state;
+		if (state & (NUD_PERMANENT | NUD_IN_TIMER)) {
+			write_unlock(&n->lock);
+			goto next_elt;
+		}
+
+		if (time_before(n->used, n->confirmed))
+			n->used = n->confirmed;
+
+		if (atomic_read(&n->refcnt) == 1 &&
+		    (state == NUD_FAILED ||
+		     time_after(now, n->used + n->parms->gc_staletime))) {
+			*np = n->next;
+			n->dead = 1;
+			write_unlock(&n->lock);
+			neigh_cleanup_and_release(n);
+			continue;
+		}
+		write_unlock(&n->lock);
+
+next_elt:
+		np = &n->next;
+	}
+
+	/* Cycle through all hash buckets every base_reachable_time/2 ticks.
+	 * ARP entry timeouts range from 1/2 base_reachable_time to 3/2
+	 * base_reachable_time.
+	 */
+	expire = tbl->parms.base_reachable_time >> 1;
+	expire /= (tbl->hash_mask + 1);
+	if (!expire)
+		expire = 1;
+
+	if (expire>HZ)
+		mod_timer(&tbl->gc_timer, round_jiffies(now + expire));
+	else
+		mod_timer(&tbl->gc_timer, now + expire);
+
+	write_unlock(&tbl->lock);
+}
+
+static __inline__ int neigh_max_probes(struct neighbour *n)
+{
+	struct neigh_parms *p = n->parms;
+	return (n->nud_state & NUD_PROBE ?
+		p->ucast_probes :
+		p->ucast_probes + p->app_probes + p->mcast_probes);
+}
+
+/* Called when a timer expires for a neighbour entry. */
+
+static void neigh_timer_handler(unsigned long arg)
+{
+	unsigned long now, next;
+	struct neighbour *neigh = (struct neighbour *)arg;
+	unsigned state;
+	int notify = 0;
+
+	write_lock(&neigh->lock);
+
+	state = neigh->nud_state;
+	now = jiffies;
+	next = now + HZ;
+
+	if (!(state & NUD_IN_TIMER)) {
+#ifndef CONFIG_SMP
+		printk(KERN_WARNING "neigh: timer & !nud_in_timer\n");
+#endif
+		goto out;
+	}
+
+	if (state & NUD_REACHABLE) {
+		if (time_before_eq(now,
+				   neigh->confirmed + neigh->parms->reachable_time)) {
+			NEIGH_PRINTK2("neigh %p is still alive.\n", neigh);
+			next = neigh->confirmed + neigh->parms->reachable_time;
+		} else if (time_before_eq(now,
+					  neigh->used + neigh->parms->delay_probe_time)) {
+			NEIGH_PRINTK2("neigh %p is delayed.\n", neigh);
+			neigh->nud_state = NUD_DELAY;
+			neigh->updated = jiffies;
+			neigh_suspect(neigh);
+			next = now + neigh->parms->delay_probe_time;
+		} else {
+			NEIGH_PRINTK2("neigh %p is suspected.\n", neigh);
+			neigh->nud_state = NUD_STALE;
+			neigh->updated = jiffies;
+			neigh_suspect(neigh);
+			notify = 1;
+		}
+	} else if (state & NUD_DELAY) {
+		if (time_before_eq(now,
+				   neigh->confirmed + neigh->parms->delay_probe_time)) {
+			NEIGH_PRINTK2("neigh %p is now reachable.\n", neigh);
+			neigh->nud_state = NUD_REACHABLE;
+			neigh->updated = jiffies;
+			neigh_connect(neigh);
+			notify = 1;
+			next = neigh->confirmed + neigh->parms->reachable_time;
+		} else {
+			NEIGH_PRINTK2("neigh %p is probed.\n", neigh);
+			neigh->nud_state = NUD_PROBE;
+			neigh->updated = jiffies;
+			atomic_set(&neigh->probes, 0);
+			next = now + neigh->parms->retrans_time;
+		}
+	} else {
+		/* NUD_PROBE|NUD_INCOMPLETE */
+		next = now + neigh->parms->retrans_time;
+	}
+
+	if ((neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) &&
+	    atomic_read(&neigh->probes) >= neigh_max_probes(neigh)) {
+		struct sk_buff *skb;
+
+		neigh->nud_state = NUD_FAILED;
+		neigh->updated = jiffies;
+		notify = 1;
+		NEIGH_CACHE_STAT_INC(neigh->tbl, res_failed);
+		NEIGH_PRINTK2("neigh %p is failed.\n", neigh);
+
+		/* It is very thin place. report_unreachable is very complicated
+		   routine. Particularly, it can hit the same neighbour entry!
+
+		   So that, we try to be accurate and avoid dead loop. --ANK
+		 */
+		while (neigh->nud_state == NUD_FAILED &&
+		       (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
+			write_unlock(&neigh->lock);
+			neigh->ops->error_report(neigh, skb);
+			write_lock(&neigh->lock);
+		}
+		skb_queue_purge(&neigh->arp_queue);
+	}
+
+	if (neigh->nud_state & NUD_IN_TIMER) {
+		if (time_before(next, jiffies + HZ/2))
+			next = jiffies + HZ/2;
+		if (!mod_timer(&neigh->timer, next))
+			neigh_hold(neigh);
+	}
+	if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) {
+		struct sk_buff *skb = skb_peek(&neigh->arp_queue);
+		/* keep skb alive even if arp_queue overflows */
+		if (skb)
+			skb = skb_copy(skb, GFP_ATOMIC);
+		write_unlock(&neigh->lock);
+		neigh->ops->solicit(neigh, skb);
+		atomic_inc(&neigh->probes);
+		if (skb)
+			kfree_skb(skb);
+	} else {
+out:
+		write_unlock(&neigh->lock);
+	}
+
+	if (notify)
+		neigh_update_notify(neigh);
+
+	neigh_release(neigh);
+}
+
+int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+{
+	int rc;
+	unsigned long now;
+
+	write_lock_bh(&neigh->lock);
+
+	rc = 0;
+	if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
+		goto out_unlock_bh;
+
+	now = jiffies;
+
+	if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
+		if (neigh->parms->mcast_probes + neigh->parms->app_probes) {
+			atomic_set(&neigh->probes, neigh->parms->ucast_probes);
+			neigh->nud_state     = NUD_INCOMPLETE;
+			neigh->updated = jiffies;
+			neigh_add_timer(neigh, now + 1);
+		} else {
+			neigh->nud_state = NUD_FAILED;
+			neigh->updated = jiffies;
+			write_unlock_bh(&neigh->lock);
+
+			if (skb)
+				kfree_skb(skb);
+			return 1;
+		}
+	} else if (neigh->nud_state & NUD_STALE) {
+		NEIGH_PRINTK2("neigh %p is delayed.\n", neigh);
+		neigh->nud_state = NUD_DELAY;
+		neigh->updated = jiffies;
+		neigh_add_timer(neigh,
+				jiffies + neigh->parms->delay_probe_time);
+	}
+
+	if (neigh->nud_state == NUD_INCOMPLETE) {
+		if (skb) {
+			if (skb_queue_len(&neigh->arp_queue) >=
+			    neigh->parms->queue_len) {
+				struct sk_buff *buff;
+				buff = __skb_dequeue(&neigh->arp_queue);
+				kfree_skb(buff);
+				NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards);
+			}
+			__skb_queue_tail(&neigh->arp_queue, skb);
+		}
+		rc = 1;
+	}
+out_unlock_bh:
+	write_unlock_bh(&neigh->lock);
+	return rc;
+}
+EXPORT_SYMBOL(__neigh_event_send);
+
+static void neigh_update_hhs(struct neighbour *neigh)
+{
+	struct hh_cache *hh;
+	void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *)
+		= neigh->dev->header_ops->cache_update;
+
+	if (update) {
+		for (hh = neigh->hh; hh; hh = hh->hh_next) {
+			write_seqlock_bh(&hh->hh_lock);
+			update(hh, neigh->dev, neigh->ha);
+			write_sequnlock_bh(&hh->hh_lock);
+		}
+	}
+}
+
+
+
+/* Generic update routine.
+   -- lladdr is new lladdr or NULL, if it is not supplied.
+   -- new    is new state.
+   -- flags
+	NEIGH_UPDATE_F_OVERRIDE allows to override existing lladdr,
+				if it is different.
+	NEIGH_UPDATE_F_WEAK_OVERRIDE will suspect existing "connected"
+				lladdr instead of overriding it
+				if it is different.
+				It also allows to retain current state
+				if lladdr is unchanged.
+	NEIGH_UPDATE_F_ADMIN	means that the change is administrative.
+
+	NEIGH_UPDATE_F_OVERRIDE_ISROUTER allows to override existing
+				NTF_ROUTER flag.
+	NEIGH_UPDATE_F_ISROUTER	indicates if the neighbour is known as
+				a router.
+
+   Caller MUST hold reference count on the entry.
+ */
+
+int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
+		 u32 flags)
+{
+	u8 old;
+	int err;
+	int notify = 0;
+	struct net_device *dev;
+	int update_isrouter = 0;
+
+	write_lock_bh(&neigh->lock);
+
+	dev    = neigh->dev;
+	old    = neigh->nud_state;
+	err    = -EPERM;
+
+	if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
+	    (old & (NUD_NOARP | NUD_PERMANENT)))
+		goto out;
+
+	if (!(new & NUD_VALID)) {
+		neigh_del_timer(neigh);
+		if (old & NUD_CONNECTED)
+			neigh_suspect(neigh);
+		neigh->nud_state = new;
+		err = 0;
+		notify = old & NUD_VALID;
+		goto out;
+	}
+
+	/* Compare new lladdr with cached one */
+	if (!dev->addr_len) {
+		/* First case: device needs no address. */
+		lladdr = neigh->ha;
+	} else if (lladdr) {
+		/* The second case: if something is already cached
+		   and a new address is proposed:
+		   - compare new & old
+		   - if they are different, check override flag
+		 */
+		if ((old & NUD_VALID) &&
+		    !memcmp(lladdr, neigh->ha, dev->addr_len))
+			lladdr = neigh->ha;
+	} else {
+		/* No address is supplied; if we know something,
+		   use it, otherwise discard the request.
+		 */
+		err = -EINVAL;
+		if (!(old & NUD_VALID))
+			goto out;
+		lladdr = neigh->ha;
+	}
+
+	if (new & NUD_CONNECTED)
+		neigh->confirmed = jiffies;
+	neigh->updated = jiffies;
+
+	/* If entry was valid and address is not changed,
+	   do not change entry state, if new one is STALE.
+	 */
+	err = 0;
+	update_isrouter = flags & NEIGH_UPDATE_F_OVERRIDE_ISROUTER;
+	if (old & NUD_VALID) {
+		if (lladdr != neigh->ha && !(flags & NEIGH_UPDATE_F_OVERRIDE)) {
+			update_isrouter = 0;
+			if ((flags & NEIGH_UPDATE_F_WEAK_OVERRIDE) &&
+			    (old & NUD_CONNECTED)) {
+				lladdr = neigh->ha;
+				new = NUD_STALE;
+			} else
+				goto out;
+		} else {
+			if (lladdr == neigh->ha && new == NUD_STALE &&
+			    ((flags & NEIGH_UPDATE_F_WEAK_OVERRIDE) ||
+			     (old & NUD_CONNECTED))
+			    )
+				new = old;
+		}
+	}
+
+	if (new != old) {
+		neigh_del_timer(neigh);
+		if (new & NUD_IN_TIMER)
+			neigh_add_timer(neigh, (jiffies +
+						((new & NUD_REACHABLE) ?
+						 neigh->parms->reachable_time :
+						 0)));
+		neigh->nud_state = new;
+	}
+
+	if (lladdr != neigh->ha) {
+		memcpy(&neigh->ha, lladdr, dev->addr_len);
+		neigh_update_hhs(neigh);
+		if (!(new & NUD_CONNECTED))
+			neigh->confirmed = jiffies -
+				      (neigh->parms->base_reachable_time << 1);
+		notify = 1;
+	}
+	if (new == old)
+		goto out;
+	if (new & NUD_CONNECTED)
+		neigh_connect(neigh);
+	else
+		neigh_suspect(neigh);
+	if (!(old & NUD_VALID)) {
+		struct sk_buff *skb;
+
+		/* Again: avoid dead loop if something went wrong */
+
+		while (neigh->nud_state & NUD_VALID &&
+		       (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
+			struct neighbour *n1 = neigh;
+			write_unlock_bh(&neigh->lock);
+			/* On shaper/eql skb->dst->neighbour != neigh :( */
+			if (skb->dst && skb->dst->neighbour)
+				n1 = skb->dst->neighbour;
+			n1->output(skb);
+			write_lock_bh(&neigh->lock);
+		}
+		skb_queue_purge(&neigh->arp_queue);
+	}
+out:
+	if (update_isrouter) {
+		neigh->flags = (flags & NEIGH_UPDATE_F_ISROUTER) ?
+			(neigh->flags | NTF_ROUTER) :
+			(neigh->flags & ~NTF_ROUTER);
+	}
+	write_unlock_bh(&neigh->lock);
+
+	if (notify)
+		neigh_update_notify(neigh);
+
+	return err;
+}
+EXPORT_SYMBOL(neigh_update);
+
+struct neighbour *neigh_event_ns(struct neigh_table *tbl,
+				 u8 *lladdr, void *saddr,
+				 struct net_device *dev)
+{
+	struct neighbour *neigh = __neigh_lookup(tbl, saddr, dev,
+						 lladdr || !dev->addr_len);
+	if (neigh)
+		neigh_update(neigh, lladdr, NUD_STALE,
+			     NEIGH_UPDATE_F_OVERRIDE);
+	return neigh;
+}
+EXPORT_SYMBOL(neigh_event_ns);
+
+static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst,
+			  __be16 protocol)
+{
+	struct hh_cache	*hh;
+	struct net_device *dev = dst->dev;
+
+	for (hh = n->hh; hh; hh = hh->hh_next)
+		if (hh->hh_type == protocol)
+			break;
+
+	if (!hh && (hh = kzalloc(sizeof(*hh), GFP_ATOMIC)) != NULL) {
+		seqlock_init(&hh->hh_lock);
+		hh->hh_type = protocol;
+		atomic_set(&hh->hh_refcnt, 0);
+		hh->hh_next = NULL;
+
+		if (dev->header_ops->cache(n, hh)) {
+			kfree(hh);
+			hh = NULL;
+		} else {
+			atomic_inc(&hh->hh_refcnt);
+			hh->hh_next = n->hh;
+			n->hh	    = hh;
+			if (n->nud_state & NUD_CONNECTED)
+				hh->hh_output = n->ops->hh_output;
+			else
+				hh->hh_output = n->ops->output;
+		}
+	}
+	if (hh)	{
+		atomic_inc(&hh->hh_refcnt);
+		dst->hh = hh;
+	}
+}
+
+/* This function can be used in contexts, where only old dev_queue_xmit
+   worked, f.e. if you want to override normal output path (eql, shaper),
+   but resolution is not made yet.
+ */
+
+int neigh_compat_output(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+
+	__skb_pull(skb, skb_network_offset(skb));
+
+	if (dev_hard_header(skb, dev, ntohs(skb->protocol), NULL, NULL,
+			    skb->len) < 0 &&
+	    dev->header_ops->rebuild(skb))
+		return 0;
+
+	return dev_queue_xmit(skb);
+}
+EXPORT_SYMBOL(neigh_compat_output);
+
+/* Slow and careful. */
+
+int neigh_resolve_output(struct sk_buff *skb)
+{
+	struct dst_entry *dst = skb->dst;
+	struct neighbour *neigh;
+	int rc = 0;
+
+	if (!dst || !(neigh = dst->neighbour))
+		goto discard;
+
+	__skb_pull(skb, skb_network_offset(skb));
+
+	if (!neigh_event_send(neigh, skb)) {
+		int err;
+		struct net_device *dev = neigh->dev;
+		if (dev->header_ops->cache && !dst->hh) {
+			write_lock_bh(&neigh->lock);
+			if (!dst->hh)
+				neigh_hh_init(neigh, dst, dst->ops->protocol);
+			err = dev_hard_header(skb, dev, ntohs(skb->protocol),
+					      neigh->ha, NULL, skb->len);
+			write_unlock_bh(&neigh->lock);
+		} else {
+			read_lock_bh(&neigh->lock);
+			err = dev_hard_header(skb, dev, ntohs(skb->protocol),
+					      neigh->ha, NULL, skb->len);
+			read_unlock_bh(&neigh->lock);
+		}
+		if (err >= 0)
+			rc = neigh->ops->queue_xmit(skb);
+		else
+			goto out_kfree_skb;
+	}
+out:
+	return rc;
+discard:
+	NEIGH_PRINTK1("neigh_resolve_output: dst=%p neigh=%p\n",
+		      dst, dst ? dst->neighbour : NULL);
+out_kfree_skb:
+	rc = -EINVAL;
+	kfree_skb(skb);
+	goto out;
+}
+EXPORT_SYMBOL(neigh_resolve_output);
+
+/* As fast as possible without hh cache */
+
+int neigh_connected_output(struct sk_buff *skb)
+{
+	int err;
+	struct dst_entry *dst = skb->dst;
+	struct neighbour *neigh = dst->neighbour;
+	struct net_device *dev = neigh->dev;
+
+	__skb_pull(skb, skb_network_offset(skb));
+
+	read_lock_bh(&neigh->lock);
+	err = dev_hard_header(skb, dev, ntohs(skb->protocol),
+			      neigh->ha, NULL, skb->len);
+	read_unlock_bh(&neigh->lock);
+	if (err >= 0)
+		err = neigh->ops->queue_xmit(skb);
+	else {
+		err = -EINVAL;
+		kfree_skb(skb);
+	}
+	return err;
+}
+EXPORT_SYMBOL(neigh_connected_output);
+
+static void neigh_proxy_process(unsigned long arg)
+{
+	struct neigh_table *tbl = (struct neigh_table *)arg;
+	long sched_next = 0;
+	unsigned long now = jiffies;
+	struct sk_buff *skb, *n;
+
+	spin_lock(&tbl->proxy_queue.lock);
+
+	skb_queue_walk_safe(&tbl->proxy_queue, skb, n) {
+		long tdif = NEIGH_CB(skb)->sched_next - now;
+
+		if (tdif <= 0) {
+			struct net_device *dev = skb->dev;
+			__skb_unlink(skb, &tbl->proxy_queue);
+			if (tbl->proxy_redo && netif_running(dev))
+				tbl->proxy_redo(skb);
+			else
+				kfree_skb(skb);
+
+			dev_put(dev);
+		} else if (!sched_next || tdif < sched_next)
+			sched_next = tdif;
+	}
+	del_timer(&tbl->proxy_timer);
+	if (sched_next)
+		mod_timer(&tbl->proxy_timer, jiffies + sched_next);
+	spin_unlock(&tbl->proxy_queue.lock);
+}
+
+void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
+		    struct sk_buff *skb)
+{
+	unsigned long now = jiffies;
+	unsigned long sched_next = now + (net_random() % p->proxy_delay);
+
+	if (tbl->proxy_queue.qlen > p->proxy_qlen) {
+		kfree_skb(skb);
+		return;
+	}
+
+	NEIGH_CB(skb)->sched_next = sched_next;
+	NEIGH_CB(skb)->flags |= LOCALLY_ENQUEUED;
+
+	spin_lock(&tbl->proxy_queue.lock);
+	if (del_timer(&tbl->proxy_timer)) {
+		if (time_before(tbl->proxy_timer.expires, sched_next))
+			sched_next = tbl->proxy_timer.expires;
+	}
+	dst_release(skb->dst);
+	skb->dst = NULL;
+	dev_hold(skb->dev);
+	__skb_queue_tail(&tbl->proxy_queue, skb);
+	mod_timer(&tbl->proxy_timer, sched_next);
+	spin_unlock(&tbl->proxy_queue.lock);
+}
+EXPORT_SYMBOL(pneigh_enqueue);
+
+static inline struct neigh_parms *lookup_neigh_params(struct neigh_table *tbl,
+						      struct net *net, int ifindex)
+{
+	struct neigh_parms *p;
+
+	for (p = &tbl->parms; p; p = p->next) {
+		if ((p->dev && p->dev->ifindex == ifindex && net_eq(neigh_parms_net(p), net)) ||
+		    (!p->dev && !ifindex))
+			return p;
+	}
+
+	return NULL;
+}
+
+struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
+				      struct neigh_table *tbl)
+{
+	struct neigh_parms *p, *ref;
+	struct net *net = dev_net(dev);
+	const struct net_device_ops *ops = dev->netdev_ops;
+
+	ref = lookup_neigh_params(tbl, net, 0);
+	if (!ref)
+		return NULL;
+
+	p = kmemdup(ref, sizeof(*p), GFP_KERNEL);
+	if (p) {
+		p->tbl		  = tbl;
+		atomic_set(&p->refcnt, 1);
+		p->reachable_time =
+				neigh_rand_reach_time(p->base_reachable_time);
+
+		if (ops->ndo_neigh_setup && ops->ndo_neigh_setup(dev, p)) {
+			kfree(p);
+			return NULL;
+		}
+
+		dev_hold(dev);
+		p->dev = dev;
+		write_pnet(&p->net, hold_net(net));
+		p->sysctl_table = NULL;
+		write_lock_bh(&tbl->lock);
+		p->next		= tbl->parms.next;
+		tbl->parms.next = p;
+		write_unlock_bh(&tbl->lock);
+	}
+	return p;
+}
+EXPORT_SYMBOL(neigh_parms_alloc);
+
+static void neigh_rcu_free_parms(struct rcu_head *head)
+{
+	struct neigh_parms *parms =
+		container_of(head, struct neigh_parms, rcu_head);
+
+	neigh_parms_put(parms);
+}
+
+void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms)
+{
+	struct neigh_parms **p;
+
+	if (!parms || parms == &tbl->parms)
+		return;
+	write_lock_bh(&tbl->lock);
+	for (p = &tbl->parms.next; *p; p = &(*p)->next) {
+		if (*p == parms) {
+			*p = parms->next;
+			parms->dead = 1;
+			write_unlock_bh(&tbl->lock);
+			if (parms->dev)
+				dev_put(parms->dev);
+			call_rcu(&parms->rcu_head, neigh_rcu_free_parms);
+			return;
+		}
+	}
+	write_unlock_bh(&tbl->lock);
+	NEIGH_PRINTK1("neigh_parms_release: not found\n");
+}
+EXPORT_SYMBOL(neigh_parms_release);
+
+static void neigh_parms_destroy(struct neigh_parms *parms)
+{
+	release_net(neigh_parms_net(parms));
+	kfree(parms);
+}
+
+static struct lock_class_key neigh_table_proxy_queue_class;
+
+void neigh_table_init_no_netlink(struct neigh_table *tbl)
+{
+	unsigned long now = jiffies;
+	unsigned long phsize;
+
+	write_pnet(&tbl->parms.net, &init_net);
+	atomic_set(&tbl->parms.refcnt, 1);
+	tbl->parms.reachable_time =
+			  neigh_rand_reach_time(tbl->parms.base_reachable_time);
+
+	if (!tbl->kmem_cachep)
+		tbl->kmem_cachep =
+			kmem_cache_create(tbl->id, tbl->entry_size, 0,
+					  SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+					  NULL);
+	tbl->stats = alloc_percpu(struct neigh_statistics);
+	if (!tbl->stats)
+		panic("cannot create neighbour cache statistics");
+
+#ifdef CONFIG_PROC_FS
+	if (!proc_create_data(tbl->id, 0, init_net.proc_net_stat,
+			      &neigh_stat_seq_fops, tbl))
+		panic("cannot create neighbour proc dir entry");
+#endif
+
+	tbl->hash_mask = 1;
+	tbl->hash_buckets = neigh_hash_alloc(tbl->hash_mask + 1);
+
+	phsize = (PNEIGH_HASHMASK + 1) * sizeof(struct pneigh_entry *);
+	tbl->phash_buckets = kzalloc(phsize, GFP_KERNEL);
+
+	if (!tbl->hash_buckets || !tbl->phash_buckets)
+		panic("cannot allocate neighbour cache hashes");
+
+	get_random_bytes(&tbl->hash_rnd, sizeof(tbl->hash_rnd));
+
+	rwlock_init(&tbl->lock);
+	setup_timer(&tbl->gc_timer, neigh_periodic_timer, (unsigned long)tbl);
+	tbl->gc_timer.expires  = now + 1;
+	add_timer(&tbl->gc_timer);
+
+	setup_timer(&tbl->proxy_timer, neigh_proxy_process, (unsigned long)tbl);
+	skb_queue_head_init_class(&tbl->proxy_queue,
+			&neigh_table_proxy_queue_class);
+
+	tbl->last_flush = now;
+	tbl->last_rand	= now + tbl->parms.reachable_time * 20;
+}
+EXPORT_SYMBOL(neigh_table_init_no_netlink);
+
+void neigh_table_init(struct neigh_table *tbl)
+{
+	struct neigh_table *tmp;
+
+	neigh_table_init_no_netlink(tbl);
+	write_lock(&neigh_tbl_lock);
+	for (tmp = neigh_tables; tmp; tmp = tmp->next) {
+		if (tmp->family == tbl->family)
+			break;
+	}
+	tbl->next	= neigh_tables;
+	neigh_tables	= tbl;
+	write_unlock(&neigh_tbl_lock);
+
+	if (unlikely(tmp)) {
+		printk(KERN_ERR "NEIGH: Registering multiple tables for "
+		       "family %d\n", tbl->family);
+		dump_stack();
+	}
+}
+EXPORT_SYMBOL(neigh_table_init);
+
+int neigh_table_clear(struct neigh_table *tbl)
+{
+	struct neigh_table **tp;
+
+	/* It is not clean... Fix it to unload IPv6 module safely */
+	del_timer_sync(&tbl->gc_timer);
+	del_timer_sync(&tbl->proxy_timer);
+	pneigh_queue_purge(&tbl->proxy_queue);
+	neigh_ifdown(tbl, NULL);
+	if (atomic_read(&tbl->entries))
+		printk(KERN_CRIT "neighbour leakage\n");
+	write_lock(&neigh_tbl_lock);
+	for (tp = &neigh_tables; *tp; tp = &(*tp)->next) {
+		if (*tp == tbl) {
+			*tp = tbl->next;
+			break;
+		}
+	}
+	write_unlock(&neigh_tbl_lock);
+
+	neigh_hash_free(tbl->hash_buckets, tbl->hash_mask + 1);
+	tbl->hash_buckets = NULL;
+
+	kfree(tbl->phash_buckets);
+	tbl->phash_buckets = NULL;
+
+	remove_proc_entry(tbl->id, init_net.proc_net_stat);
+
+	free_percpu(tbl->stats);
+	tbl->stats = NULL;
+
+	kmem_cache_destroy(tbl->kmem_cachep);
+	tbl->kmem_cachep = NULL;
+
+	return 0;
+}
+EXPORT_SYMBOL(neigh_table_clear);
+
+static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ndmsg *ndm;
+	struct nlattr *dst_attr;
+	struct neigh_table *tbl;
+	struct net_device *dev = NULL;
+	int err = -EINVAL;
+
+	if (nlmsg_len(nlh) < sizeof(*ndm))
+		goto out;
+
+	dst_attr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_DST);
+	if (dst_attr == NULL)
+		goto out;
+
+	ndm = nlmsg_data(nlh);
+	if (ndm->ndm_ifindex) {
+		dev = dev_get_by_index(net, ndm->ndm_ifindex);
+		if (dev == NULL) {
+			err = -ENODEV;
+			goto out;
+		}
+	}
+
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables; tbl; tbl = tbl->next) {
+		struct neighbour *neigh;
+
+		if (tbl->family != ndm->ndm_family)
+			continue;
+		read_unlock(&neigh_tbl_lock);
+
+		if (nla_len(dst_attr) < tbl->key_len)
+			goto out_dev_put;
+
+		if (ndm->ndm_flags & NTF_PROXY) {
+			err = pneigh_delete(tbl, net, nla_data(dst_attr), dev);
+			goto out_dev_put;
+		}
+
+		if (dev == NULL)
+			goto out_dev_put;
+
+		neigh = neigh_lookup(tbl, nla_data(dst_attr), dev);
+		if (neigh == NULL) {
+			err = -ENOENT;
+			goto out_dev_put;
+		}
+
+		err = neigh_update(neigh, NULL, NUD_FAILED,
+				   NEIGH_UPDATE_F_OVERRIDE |
+				   NEIGH_UPDATE_F_ADMIN);
+		neigh_release(neigh);
+		goto out_dev_put;
+	}
+	read_unlock(&neigh_tbl_lock);
+	err = -EAFNOSUPPORT;
+
+out_dev_put:
+	if (dev)
+		dev_put(dev);
+out:
+	return err;
+}
+
+static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ndmsg *ndm;
+	struct nlattr *tb[NDA_MAX+1];
+	struct neigh_table *tbl;
+	struct net_device *dev = NULL;
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
+	if (err < 0)
+		goto out;
+
+	err = -EINVAL;
+	if (tb[NDA_DST] == NULL)
+		goto out;
+
+	ndm = nlmsg_data(nlh);
+	if (ndm->ndm_ifindex) {
+		dev = dev_get_by_index(net, ndm->ndm_ifindex);
+		if (dev == NULL) {
+			err = -ENODEV;
+			goto out;
+		}
+
+		if (tb[NDA_LLADDR] && nla_len(tb[NDA_LLADDR]) < dev->addr_len)
+			goto out_dev_put;
+	}
+
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables; tbl; tbl = tbl->next) {
+		int flags = NEIGH_UPDATE_F_ADMIN | NEIGH_UPDATE_F_OVERRIDE;
+		struct neighbour *neigh;
+		void *dst, *lladdr;
+
+		if (tbl->family != ndm->ndm_family)
+			continue;
+		read_unlock(&neigh_tbl_lock);
+
+		if (nla_len(tb[NDA_DST]) < tbl->key_len)
+			goto out_dev_put;
+		dst = nla_data(tb[NDA_DST]);
+		lladdr = tb[NDA_LLADDR] ? nla_data(tb[NDA_LLADDR]) : NULL;
+
+		if (ndm->ndm_flags & NTF_PROXY) {
+			struct pneigh_entry *pn;
+
+			err = -ENOBUFS;
+			pn = pneigh_lookup(tbl, net, dst, dev, 1);
+			if (pn) {
+				pn->flags = ndm->ndm_flags;
+				err = 0;
+			}
+			goto out_dev_put;
+		}
+
+		if (dev == NULL)
+			goto out_dev_put;
+
+		neigh = neigh_lookup(tbl, dst, dev);
+		if (neigh == NULL) {
+			if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
+				err = -ENOENT;
+				goto out_dev_put;
+			}
+
+			neigh = __neigh_lookup_errno(tbl, dst, dev);
+			if (IS_ERR(neigh)) {
+				err = PTR_ERR(neigh);
+				goto out_dev_put;
+			}
+		} else {
+			if (nlh->nlmsg_flags & NLM_F_EXCL) {
+				err = -EEXIST;
+				neigh_release(neigh);
+				goto out_dev_put;
+			}
+
+			if (!(nlh->nlmsg_flags & NLM_F_REPLACE))
+				flags &= ~NEIGH_UPDATE_F_OVERRIDE;
+		}
+
+		err = neigh_update(neigh, lladdr, ndm->ndm_state, flags);
+		neigh_release(neigh);
+		goto out_dev_put;
+	}
+
+	read_unlock(&neigh_tbl_lock);
+	err = -EAFNOSUPPORT;
+
+out_dev_put:
+	if (dev)
+		dev_put(dev);
+out:
+	return err;
+}
+
+static int neightbl_fill_parms(struct sk_buff *skb, struct neigh_parms *parms)
+{
+	struct nlattr *nest;
+
+	nest = nla_nest_start(skb, NDTA_PARMS);
+	if (nest == NULL)
+		return -ENOBUFS;
+
+	if (parms->dev)
+		NLA_PUT_U32(skb, NDTPA_IFINDEX, parms->dev->ifindex);
+
+	NLA_PUT_U32(skb, NDTPA_REFCNT, atomic_read(&parms->refcnt));
+	NLA_PUT_U32(skb, NDTPA_QUEUE_LEN, parms->queue_len);
+	NLA_PUT_U32(skb, NDTPA_PROXY_QLEN, parms->proxy_qlen);
+	NLA_PUT_U32(skb, NDTPA_APP_PROBES, parms->app_probes);
+	NLA_PUT_U32(skb, NDTPA_UCAST_PROBES, parms->ucast_probes);
+	NLA_PUT_U32(skb, NDTPA_MCAST_PROBES, parms->mcast_probes);
+	NLA_PUT_MSECS(skb, NDTPA_REACHABLE_TIME, parms->reachable_time);
+	NLA_PUT_MSECS(skb, NDTPA_BASE_REACHABLE_TIME,
+		      parms->base_reachable_time);
+	NLA_PUT_MSECS(skb, NDTPA_GC_STALETIME, parms->gc_staletime);
+	NLA_PUT_MSECS(skb, NDTPA_DELAY_PROBE_TIME, parms->delay_probe_time);
+	NLA_PUT_MSECS(skb, NDTPA_RETRANS_TIME, parms->retrans_time);
+	NLA_PUT_MSECS(skb, NDTPA_ANYCAST_DELAY, parms->anycast_delay);
+	NLA_PUT_MSECS(skb, NDTPA_PROXY_DELAY, parms->proxy_delay);
+	NLA_PUT_MSECS(skb, NDTPA_LOCKTIME, parms->locktime);
+
+	return nla_nest_end(skb, nest);
+
+nla_put_failure:
+	nla_nest_cancel(skb, nest);
+	return -EMSGSIZE;
+}
+
+static int neightbl_fill_info(struct sk_buff *skb, struct neigh_table *tbl,
+			      u32 pid, u32 seq, int type, int flags)
+{
+	struct nlmsghdr *nlh;
+	struct ndtmsg *ndtmsg;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ndtmsg = nlmsg_data(nlh);
+
+	read_lock_bh(&tbl->lock);
+	ndtmsg->ndtm_family = tbl->family;
+	ndtmsg->ndtm_pad1   = 0;
+	ndtmsg->ndtm_pad2   = 0;
+
+	NLA_PUT_STRING(skb, NDTA_NAME, tbl->id);
+	NLA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
+	NLA_PUT_U32(skb, NDTA_THRESH1, tbl->gc_thresh1);
+	NLA_PUT_U32(skb, NDTA_THRESH2, tbl->gc_thresh2);
+	NLA_PUT_U32(skb, NDTA_THRESH3, tbl->gc_thresh3);
+
+	{
+		unsigned long now = jiffies;
+		unsigned int flush_delta = now - tbl->last_flush;
+		unsigned int rand_delta = now - tbl->last_rand;
+
+		struct ndt_config ndc = {
+			.ndtc_key_len		= tbl->key_len,
+			.ndtc_entry_size	= tbl->entry_size,
+			.ndtc_entries		= atomic_read(&tbl->entries),
+			.ndtc_last_flush	= jiffies_to_msecs(flush_delta),
+			.ndtc_last_rand		= jiffies_to_msecs(rand_delta),
+			.ndtc_hash_rnd		= tbl->hash_rnd,
+			.ndtc_hash_mask		= tbl->hash_mask,
+			.ndtc_hash_chain_gc	= tbl->hash_chain_gc,
+			.ndtc_proxy_qlen	= tbl->proxy_queue.qlen,
+		};
+
+		NLA_PUT(skb, NDTA_CONFIG, sizeof(ndc), &ndc);
+	}
+
+	{
+		int cpu;
+		struct ndt_stats ndst;
+
+		memset(&ndst, 0, sizeof(ndst));
+
+		for_each_possible_cpu(cpu) {
+			struct neigh_statistics	*st;
+
+			st = per_cpu_ptr(tbl->stats, cpu);
+			ndst.ndts_allocs		+= st->allocs;
+			ndst.ndts_destroys		+= st->destroys;
+			ndst.ndts_hash_grows		+= st->hash_grows;
+			ndst.ndts_res_failed		+= st->res_failed;
+			ndst.ndts_lookups		+= st->lookups;
+			ndst.ndts_hits			+= st->hits;
+			ndst.ndts_rcv_probes_mcast	+= st->rcv_probes_mcast;
+			ndst.ndts_rcv_probes_ucast	+= st->rcv_probes_ucast;
+			ndst.ndts_periodic_gc_runs	+= st->periodic_gc_runs;
+			ndst.ndts_forced_gc_runs	+= st->forced_gc_runs;
+		}
+
+		NLA_PUT(skb, NDTA_STATS, sizeof(ndst), &ndst);
+	}
+
+	BUG_ON(tbl->parms.dev);
+	if (neightbl_fill_parms(skb, &tbl->parms) < 0)
+		goto nla_put_failure;
+
+	read_unlock_bh(&tbl->lock);
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	read_unlock_bh(&tbl->lock);
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static int neightbl_fill_param_info(struct sk_buff *skb,
+				    struct neigh_table *tbl,
+				    struct neigh_parms *parms,
+				    u32 pid, u32 seq, int type,
+				    unsigned int flags)
+{
+	struct ndtmsg *ndtmsg;
+	struct nlmsghdr *nlh;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ndtmsg = nlmsg_data(nlh);
+
+	read_lock_bh(&tbl->lock);
+	ndtmsg->ndtm_family = tbl->family;
+	ndtmsg->ndtm_pad1   = 0;
+	ndtmsg->ndtm_pad2   = 0;
+
+	if (nla_put_string(skb, NDTA_NAME, tbl->id) < 0 ||
+	    neightbl_fill_parms(skb, parms) < 0)
+		goto errout;
+
+	read_unlock_bh(&tbl->lock);
+	return nlmsg_end(skb, nlh);
+errout:
+	read_unlock_bh(&tbl->lock);
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static const struct nla_policy nl_neightbl_policy[NDTA_MAX+1] = {
+	[NDTA_NAME]		= { .type = NLA_STRING },
+	[NDTA_THRESH1]		= { .type = NLA_U32 },
+	[NDTA_THRESH2]		= { .type = NLA_U32 },
+	[NDTA_THRESH3]		= { .type = NLA_U32 },
+	[NDTA_GC_INTERVAL]	= { .type = NLA_U64 },
+	[NDTA_PARMS]		= { .type = NLA_NESTED },
+};
+
+static const struct nla_policy nl_ntbl_parm_policy[NDTPA_MAX+1] = {
+	[NDTPA_IFINDEX]			= { .type = NLA_U32 },
+	[NDTPA_QUEUE_LEN]		= { .type = NLA_U32 },
+	[NDTPA_PROXY_QLEN]		= { .type = NLA_U32 },
+	[NDTPA_APP_PROBES]		= { .type = NLA_U32 },
+	[NDTPA_UCAST_PROBES]		= { .type = NLA_U32 },
+	[NDTPA_MCAST_PROBES]		= { .type = NLA_U32 },
+	[NDTPA_BASE_REACHABLE_TIME]	= { .type = NLA_U64 },
+	[NDTPA_GC_STALETIME]		= { .type = NLA_U64 },
+	[NDTPA_DELAY_PROBE_TIME]	= { .type = NLA_U64 },
+	[NDTPA_RETRANS_TIME]		= { .type = NLA_U64 },
+	[NDTPA_ANYCAST_DELAY]		= { .type = NLA_U64 },
+	[NDTPA_PROXY_DELAY]		= { .type = NLA_U64 },
+	[NDTPA_LOCKTIME]		= { .type = NLA_U64 },
+};
+
+static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct neigh_table *tbl;
+	struct ndtmsg *ndtmsg;
+	struct nlattr *tb[NDTA_MAX+1];
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ndtmsg), tb, NDTA_MAX,
+			  nl_neightbl_policy);
+	if (err < 0)
+		goto errout;
+
+	if (tb[NDTA_NAME] == NULL) {
+		err = -EINVAL;
+		goto errout;
+	}
+
+	ndtmsg = nlmsg_data(nlh);
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables; tbl; tbl = tbl->next) {
+		if (ndtmsg->ndtm_family && tbl->family != ndtmsg->ndtm_family)
+			continue;
+
+		if (nla_strcmp(tb[NDTA_NAME], tbl->id) == 0)
+			break;
+	}
+
+	if (tbl == NULL) {
+		err = -ENOENT;
+		goto errout_locked;
+	}
+
+	/*
+	 * We acquire tbl->lock to be nice to the periodic timers and
+	 * make sure they always see a consistent set of values.
+	 */
+	write_lock_bh(&tbl->lock);
+
+	if (tb[NDTA_PARMS]) {
+		struct nlattr *tbp[NDTPA_MAX+1];
+		struct neigh_parms *p;
+		int i, ifindex = 0;
+
+		err = nla_parse_nested(tbp, NDTPA_MAX, tb[NDTA_PARMS],
+				       nl_ntbl_parm_policy);
+		if (err < 0)
+			goto errout_tbl_lock;
+
+		if (tbp[NDTPA_IFINDEX])
+			ifindex = nla_get_u32(tbp[NDTPA_IFINDEX]);
+
+		p = lookup_neigh_params(tbl, net, ifindex);
+		if (p == NULL) {
+			err = -ENOENT;
+			goto errout_tbl_lock;
+		}
+
+		for (i = 1; i <= NDTPA_MAX; i++) {
+			if (tbp[i] == NULL)
+				continue;
+
+			switch (i) {
+			case NDTPA_QUEUE_LEN:
+				p->queue_len = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_PROXY_QLEN:
+				p->proxy_qlen = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_APP_PROBES:
+				p->app_probes = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_UCAST_PROBES:
+				p->ucast_probes = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_MCAST_PROBES:
+				p->mcast_probes = nla_get_u32(tbp[i]);
+				break;
+			case NDTPA_BASE_REACHABLE_TIME:
+				p->base_reachable_time = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_GC_STALETIME:
+				p->gc_staletime = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_DELAY_PROBE_TIME:
+				p->delay_probe_time = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_RETRANS_TIME:
+				p->retrans_time = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_ANYCAST_DELAY:
+				p->anycast_delay = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_PROXY_DELAY:
+				p->proxy_delay = nla_get_msecs(tbp[i]);
+				break;
+			case NDTPA_LOCKTIME:
+				p->locktime = nla_get_msecs(tbp[i]);
+				break;
+			}
+		}
+	}
+
+	if (tb[NDTA_THRESH1])
+		tbl->gc_thresh1 = nla_get_u32(tb[NDTA_THRESH1]);
+
+	if (tb[NDTA_THRESH2])
+		tbl->gc_thresh2 = nla_get_u32(tb[NDTA_THRESH2]);
+
+	if (tb[NDTA_THRESH3])
+		tbl->gc_thresh3 = nla_get_u32(tb[NDTA_THRESH3]);
+
+	if (tb[NDTA_GC_INTERVAL])
+		tbl->gc_interval = nla_get_msecs(tb[NDTA_GC_INTERVAL]);
+
+	err = 0;
+
+errout_tbl_lock:
+	write_unlock_bh(&tbl->lock);
+errout_locked:
+	read_unlock(&neigh_tbl_lock);
+errout:
+	return err;
+}
+
+static int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct net *net = sock_net(skb->sk);
+	int family, tidx, nidx = 0;
+	int tbl_skip = cb->args[0];
+	int neigh_skip = cb->args[1];
+	struct neigh_table *tbl;
+
+	family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
+
+	read_lock(&neigh_tbl_lock);
+	for (tbl = neigh_tables, tidx = 0; tbl; tbl = tbl->next, tidx++) {
+		struct neigh_parms *p;
+
+		if (tidx < tbl_skip || (family && tbl->family != family))
+			continue;
+
+		if (neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).pid,
+				       cb->nlh->nlmsg_seq, RTM_NEWNEIGHTBL,
+				       NLM_F_MULTI) <= 0)
+			break;
+
+		for (nidx = 0, p = tbl->parms.next; p; p = p->next) {
+			if (!net_eq(neigh_parms_net(p), net))
+				continue;
+
+			if (nidx < neigh_skip)
+				goto next;
+
+			if (neightbl_fill_param_info(skb, tbl, p,
+						     NETLINK_CB(cb->skb).pid,
+						     cb->nlh->nlmsg_seq,
+						     RTM_NEWNEIGHTBL,
+						     NLM_F_MULTI) <= 0)
+				goto out;
+		next:
+			nidx++;
+		}
+
+		neigh_skip = 0;
+	}
+out:
+	read_unlock(&neigh_tbl_lock);
+	cb->args[0] = tidx;
+	cb->args[1] = nidx;
+
+	return skb->len;
+}
+
+static int neigh_fill_info(struct sk_buff *skb, struct neighbour *neigh,
+			   u32 pid, u32 seq, int type, unsigned int flags)
+{
+	unsigned long now = jiffies;
+	struct nda_cacheinfo ci;
+	struct nlmsghdr *nlh;
+	struct ndmsg *ndm;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ndm = nlmsg_data(nlh);
+	ndm->ndm_family	 = neigh->ops->family;
+	ndm->ndm_pad1    = 0;
+	ndm->ndm_pad2    = 0;
+	ndm->ndm_flags	 = neigh->flags;
+	ndm->ndm_type	 = neigh->type;
+	ndm->ndm_ifindex = neigh->dev->ifindex;
+
+	NLA_PUT(skb, NDA_DST, neigh->tbl->key_len, neigh->primary_key);
+
+	read_lock_bh(&neigh->lock);
+	ndm->ndm_state	 = neigh->nud_state;
+	if ((neigh->nud_state & NUD_VALID) &&
+	    nla_put(skb, NDA_LLADDR, neigh->dev->addr_len, neigh->ha) < 0) {
+		read_unlock_bh(&neigh->lock);
+		goto nla_put_failure;
+	}
+
+	ci.ndm_used	 = jiffies_to_clock_t(now - neigh->used);
+	ci.ndm_confirmed = jiffies_to_clock_t(now - neigh->confirmed);
+	ci.ndm_updated	 = jiffies_to_clock_t(now - neigh->updated);
+	ci.ndm_refcnt	 = atomic_read(&neigh->refcnt) - 1;
+	read_unlock_bh(&neigh->lock);
+
+	NLA_PUT_U32(skb, NDA_PROBES, atomic_read(&neigh->probes));
+	NLA_PUT(skb, NDA_CACHEINFO, sizeof(ci), &ci);
+
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static void neigh_update_notify(struct neighbour *neigh)
+{
+	call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh);
+	__neigh_notify(neigh, RTM_NEWNEIGH, 0);
+}
+
+static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
+			    struct netlink_callback *cb)
+{
+	struct net * net = sock_net(skb->sk);
+	struct neighbour *n;
+	int rc, h, s_h = cb->args[1];
+	int idx, s_idx = idx = cb->args[2];
+
+	read_lock_bh(&tbl->lock);
+	for (h = 0; h <= tbl->hash_mask; h++) {
+		if (h < s_h)
+			continue;
+		if (h > s_h)
+			s_idx = 0;
+		for (n = tbl->hash_buckets[h], idx = 0; n; n = n->next) {
+			if (dev_net(n->dev) != net)
+				continue;
+			if (idx < s_idx)
+				goto next;
+			if (neigh_fill_info(skb, n, NETLINK_CB(cb->skb).pid,
+					    cb->nlh->nlmsg_seq,
+					    RTM_NEWNEIGH,
+					    NLM_F_MULTI) <= 0) {
+				read_unlock_bh(&tbl->lock);
+				rc = -1;
+				goto out;
+			}
+		next:
+			idx++;
+		}
+	}
+	read_unlock_bh(&tbl->lock);
+	rc = skb->len;
+out:
+	cb->args[1] = h;
+	cb->args[2] = idx;
+	return rc;
+}
+
+static int neigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct neigh_table *tbl;
+	int t, family, s_t;
+
+	read_lock(&neigh_tbl_lock);
+	family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
+	s_t = cb->args[0];
+
+	for (tbl = neigh_tables, t = 0; tbl; tbl = tbl->next, t++) {
+		if (t < s_t || (family && tbl->family != family))
+			continue;
+		if (t > s_t)
+			memset(&cb->args[1], 0, sizeof(cb->args) -
+						sizeof(cb->args[0]));
+		if (neigh_dump_table(tbl, skb, cb) < 0)
+			break;
+	}
+	read_unlock(&neigh_tbl_lock);
+
+	cb->args[0] = t;
+	return skb->len;
+}
+
+void neigh_for_each(struct neigh_table *tbl, void (*cb)(struct neighbour *, void *), void *cookie)
+{
+	int chain;
+
+	read_lock_bh(&tbl->lock);
+	for (chain = 0; chain <= tbl->hash_mask; chain++) {
+		struct neighbour *n;
+
+		for (n = tbl->hash_buckets[chain]; n; n = n->next)
+			cb(n, cookie);
+	}
+	read_unlock_bh(&tbl->lock);
+}
+EXPORT_SYMBOL(neigh_for_each);
+
+/* The tbl->lock must be held as a writer and BH disabled. */
+void __neigh_for_each_release(struct neigh_table *tbl,
+			      int (*cb)(struct neighbour *))
+{
+	int chain;
+
+	for (chain = 0; chain <= tbl->hash_mask; chain++) {
+		struct neighbour *n, **np;
+
+		np = &tbl->hash_buckets[chain];
+		while ((n = *np) != NULL) {
+			int release;
+
+			write_lock(&n->lock);
+			release = cb(n);
+			if (release) {
+				*np = n->next;
+				n->dead = 1;
+			} else
+				np = &n->next;
+			write_unlock(&n->lock);
+			if (release)
+				neigh_cleanup_and_release(n);
+		}
+	}
+}
+EXPORT_SYMBOL(__neigh_for_each_release);
+
+#ifdef CONFIG_PROC_FS
+
+static struct neighbour *neigh_get_first(struct seq_file *seq)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+	struct neighbour *n = NULL;
+	int bucket = state->bucket;
+
+	state->flags &= ~NEIGH_SEQ_IS_PNEIGH;
+	for (bucket = 0; bucket <= tbl->hash_mask; bucket++) {
+		n = tbl->hash_buckets[bucket];
+
+		while (n) {
+			if (!net_eq(dev_net(n->dev), net))
+				goto next;
+			if (state->neigh_sub_iter) {
+				loff_t fakep = 0;
+				void *v;
+
+				v = state->neigh_sub_iter(state, n, &fakep);
+				if (!v)
+					goto next;
+			}
+			if (!(state->flags & NEIGH_SEQ_SKIP_NOARP))
+				break;
+			if (n->nud_state & ~NUD_NOARP)
+				break;
+		next:
+			n = n->next;
+		}
+
+		if (n)
+			break;
+	}
+	state->bucket = bucket;
+
+	return n;
+}
+
+static struct neighbour *neigh_get_next(struct seq_file *seq,
+					struct neighbour *n,
+					loff_t *pos)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+
+	if (state->neigh_sub_iter) {
+		void *v = state->neigh_sub_iter(state, n, pos);
+		if (v)
+			return n;
+	}
+	n = n->next;
+
+	while (1) {
+		while (n) {
+			if (!net_eq(dev_net(n->dev), net))
+				goto next;
+			if (state->neigh_sub_iter) {
+				void *v = state->neigh_sub_iter(state, n, pos);
+				if (v)
+					return n;
+				goto next;
+			}
+			if (!(state->flags & NEIGH_SEQ_SKIP_NOARP))
+				break;
+
+			if (n->nud_state & ~NUD_NOARP)
+				break;
+		next:
+			n = n->next;
+		}
+
+		if (n)
+			break;
+
+		if (++state->bucket > tbl->hash_mask)
+			break;
+
+		n = tbl->hash_buckets[state->bucket];
+	}
+
+	if (n && pos)
+		--(*pos);
+	return n;
+}
+
+static struct neighbour *neigh_get_idx(struct seq_file *seq, loff_t *pos)
+{
+	struct neighbour *n = neigh_get_first(seq);
+
+	if (n) {
+		--(*pos);
+		while (*pos) {
+			n = neigh_get_next(seq, n, pos);
+			if (!n)
+				break;
+		}
+	}
+	return *pos ? NULL : n;
+}
+
+static struct pneigh_entry *pneigh_get_first(struct seq_file *seq)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+	struct pneigh_entry *pn = NULL;
+	int bucket = state->bucket;
+
+	state->flags |= NEIGH_SEQ_IS_PNEIGH;
+	for (bucket = 0; bucket <= PNEIGH_HASHMASK; bucket++) {
+		pn = tbl->phash_buckets[bucket];
+		while (pn && !net_eq(pneigh_net(pn), net))
+			pn = pn->next;
+		if (pn)
+			break;
+	}
+	state->bucket = bucket;
+
+	return pn;
+}
+
+static struct pneigh_entry *pneigh_get_next(struct seq_file *seq,
+					    struct pneigh_entry *pn,
+					    loff_t *pos)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct neigh_table *tbl = state->tbl;
+
+	pn = pn->next;
+	while (!pn) {
+		if (++state->bucket > PNEIGH_HASHMASK)
+			break;
+		pn = tbl->phash_buckets[state->bucket];
+		while (pn && !net_eq(pneigh_net(pn), net))
+			pn = pn->next;
+		if (pn)
+			break;
+	}
+
+	if (pn && pos)
+		--(*pos);
+
+	return pn;
+}
+
+static struct pneigh_entry *pneigh_get_idx(struct seq_file *seq, loff_t *pos)
+{
+	struct pneigh_entry *pn = pneigh_get_first(seq);
+
+	if (pn) {
+		--(*pos);
+		while (*pos) {
+			pn = pneigh_get_next(seq, pn, pos);
+			if (!pn)
+				break;
+		}
+	}
+	return *pos ? NULL : pn;
+}
+
+static void *neigh_get_idx_any(struct seq_file *seq, loff_t *pos)
+{
+	struct neigh_seq_state *state = seq->private;
+	void *rc;
+	loff_t idxpos = *pos;
+
+	rc = neigh_get_idx(seq, &idxpos);
+	if (!rc && !(state->flags & NEIGH_SEQ_NEIGH_ONLY))
+		rc = pneigh_get_idx(seq, &idxpos);
+
+	return rc;
+}
+
+void *neigh_seq_start(struct seq_file *seq, loff_t *pos, struct neigh_table *tbl, unsigned int neigh_seq_flags)
+	__acquires(tbl->lock)
+{
+	struct neigh_seq_state *state = seq->private;
+
+	state->tbl = tbl;
+	state->bucket = 0;
+	state->flags = (neigh_seq_flags & ~NEIGH_SEQ_IS_PNEIGH);
+
+	read_lock_bh(&tbl->lock);
+
+	return *pos ? neigh_get_idx_any(seq, pos) : SEQ_START_TOKEN;
+}
+EXPORT_SYMBOL(neigh_seq_start);
+
+void *neigh_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct neigh_seq_state *state;
+	void *rc;
+
+	if (v == SEQ_START_TOKEN) {
+		rc = neigh_get_first(seq);
+		goto out;
+	}
+
+	state = seq->private;
+	if (!(state->flags & NEIGH_SEQ_IS_PNEIGH)) {
+		rc = neigh_get_next(seq, v, NULL);
+		if (rc)
+			goto out;
+		if (!(state->flags & NEIGH_SEQ_NEIGH_ONLY))
+			rc = pneigh_get_first(seq);
+	} else {
+		BUG_ON(state->flags & NEIGH_SEQ_NEIGH_ONLY);
+		rc = pneigh_get_next(seq, v, NULL);
+	}
+out:
+	++(*pos);
+	return rc;
+}
+EXPORT_SYMBOL(neigh_seq_next);
+
+void neigh_seq_stop(struct seq_file *seq, void *v)
+	__releases(tbl->lock)
+{
+	struct neigh_seq_state *state = seq->private;
+	struct neigh_table *tbl = state->tbl;
+
+	read_unlock_bh(&tbl->lock);
+}
+EXPORT_SYMBOL(neigh_seq_stop);
+
+/* statistics via seq_file */
+
+static void *neigh_stat_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct proc_dir_entry *pde = seq->private;
+	struct neigh_table *tbl = pde->data;
+	int cpu;
+
+	if (*pos == 0)
+		return SEQ_START_TOKEN;
+
+	for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
+		if (!cpu_possible(cpu))
+			continue;
+		*pos = cpu+1;
+		return per_cpu_ptr(tbl->stats, cpu);
+	}
+	return NULL;
+}
+
+static void *neigh_stat_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct proc_dir_entry *pde = seq->private;
+	struct neigh_table *tbl = pde->data;
+	int cpu;
+
+	for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
+		if (!cpu_possible(cpu))
+			continue;
+		*pos = cpu+1;
+		return per_cpu_ptr(tbl->stats, cpu);
+	}
+	return NULL;
+}
+
+static void neigh_stat_seq_stop(struct seq_file *seq, void *v)
+{
+
+}
+
+static int neigh_stat_seq_show(struct seq_file *seq, void *v)
+{
+	struct proc_dir_entry *pde = seq->private;
+	struct neigh_table *tbl = pde->data;
+	struct neigh_statistics *st = v;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_printf(seq, "entries  allocs destroys hash_grows  lookups hits  res_failed  rcv_probes_mcast rcv_probes_ucast  periodic_gc_runs forced_gc_runs unresolved_discards\n");
+		return 0;
+	}
+
+	seq_printf(seq, "%08x  %08lx %08lx %08lx  %08lx %08lx  %08lx  "
+			"%08lx %08lx  %08lx %08lx %08lx\n",
+		   atomic_read(&tbl->entries),
+
+		   st->allocs,
+		   st->destroys,
+		   st->hash_grows,
+
+		   st->lookups,
+		   st->hits,
+
+		   st->res_failed,
+
+		   st->rcv_probes_mcast,
+		   st->rcv_probes_ucast,
+
+		   st->periodic_gc_runs,
+		   st->forced_gc_runs,
+		   st->unres_discards
+		   );
+
+	return 0;
+}
+
+static const struct seq_operations neigh_stat_seq_ops = {
+	.start	= neigh_stat_seq_start,
+	.next	= neigh_stat_seq_next,
+	.stop	= neigh_stat_seq_stop,
+	.show	= neigh_stat_seq_show,
+};
+
+static int neigh_stat_seq_open(struct inode *inode, struct file *file)
+{
+	int ret = seq_open(file, &neigh_stat_seq_ops);
+
+	if (!ret) {
+		struct seq_file *sf = file->private_data;
+		sf->private = PDE(inode);
+	}
+	return ret;
+};
+
+static const struct file_operations neigh_stat_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open 	 = neigh_stat_seq_open,
+	.read	 = seq_read,
+	.llseek	 = seq_lseek,
+	.release = seq_release,
+};
+
+#endif /* CONFIG_PROC_FS */
+
+static inline size_t neigh_nlmsg_size(void)
+{
+	return NLMSG_ALIGN(sizeof(struct ndmsg))
+	       + nla_total_size(MAX_ADDR_LEN) /* NDA_DST */
+	       + nla_total_size(MAX_ADDR_LEN) /* NDA_LLADDR */
+	       + nla_total_size(sizeof(struct nda_cacheinfo))
+	       + nla_total_size(4); /* NDA_PROBES */
+}
+
+static void __neigh_notify(struct neighbour *n, int type, int flags)
+{
+	struct net *net = dev_net(n->dev);
+	struct sk_buff *skb;
+	int err = -ENOBUFS;
+
+	skb = nlmsg_new(neigh_nlmsg_size(), GFP_ATOMIC);
+	if (skb == NULL)
+		goto errout;
+
+	err = neigh_fill_info(skb, n, 0, 0, type, flags);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in neigh_nlmsg_size() */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(skb);
+		goto errout;
+	}
+	err = rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
+errout:
+	if (err < 0)
+		rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
+}
+
+#ifdef CONFIG_ARPD
+void neigh_app_ns(struct neighbour *n)
+{
+	__neigh_notify(n, RTM_GETNEIGH, NLM_F_REQUEST);
+}
+EXPORT_SYMBOL(neigh_app_ns);
+#endif /* CONFIG_ARPD */
+
+#ifdef CONFIG_SYSCTL
+
+static struct neigh_sysctl_table {
+	struct ctl_table_header *sysctl_header;
+	struct ctl_table neigh_vars[__NET_NEIGH_MAX];
+	char *dev_name;
+} neigh_sysctl_template __read_mostly = {
+	.neigh_vars = {
+		{
+			.ctl_name	= NET_NEIGH_MCAST_SOLICIT,
+			.procname	= "mcast_solicit",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_UCAST_SOLICIT,
+			.procname	= "ucast_solicit",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_APP_SOLICIT,
+			.procname	= "app_solicit",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.procname	= "retrans_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_REACHABLE_TIME,
+			.procname	= "base_reachable_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_DELAY_PROBE_TIME,
+			.procname	= "delay_first_probe_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_STALE_TIME,
+			.procname	= "gc_stale_time",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_UNRES_QLEN,
+			.procname	= "unres_qlen",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_PROXY_QLEN,
+			.procname	= "proxy_qlen",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.procname	= "anycast_delay",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.procname	= "proxy_delay",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.procname	= "locktime",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_userhz_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_RETRANS_TIME_MS,
+			.procname	= "retrans_time_ms",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_ms_jiffies,
+			.strategy	= sysctl_ms_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_REACHABLE_TIME_MS,
+			.procname	= "base_reachable_time_ms",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_ms_jiffies,
+			.strategy	= sysctl_ms_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_INTERVAL,
+			.procname	= "gc_interval",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec_jiffies,
+			.strategy	= sysctl_jiffies,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_THRESH1,
+			.procname	= "gc_thresh1",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_THRESH2,
+			.procname	= "gc_thresh2",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{
+			.ctl_name	= NET_NEIGH_GC_THRESH3,
+			.procname	= "gc_thresh3",
+			.maxlen		= sizeof(int),
+			.mode		= 0644,
+			.proc_handler	= proc_dointvec,
+		},
+		{},
+	},
+};
+
+int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
+			  int p_id, int pdev_id, char *p_name,
+			  proc_handler *handler, ctl_handler *strategy)
+{
+	struct neigh_sysctl_table *t;
+	const char *dev_name_source = NULL;
+
+#define NEIGH_CTL_PATH_ROOT	0
+#define NEIGH_CTL_PATH_PROTO	1
+#define NEIGH_CTL_PATH_NEIGH	2
+#define NEIGH_CTL_PATH_DEV	3
+
+	struct ctl_path neigh_path[] = {
+		{ .procname = "net",	 .ctl_name = CTL_NET, },
+		{ .procname = "proto",	 .ctl_name = 0, },
+		{ .procname = "neigh",	 .ctl_name = 0, },
+		{ .procname = "default", .ctl_name = NET_PROTO_CONF_DEFAULT, },
+		{ },
+	};
+
+	t = kmemdup(&neigh_sysctl_template, sizeof(*t), GFP_KERNEL);
+	if (!t)
+		goto err;
+
+	t->neigh_vars[0].data  = &p->mcast_probes;
+	t->neigh_vars[1].data  = &p->ucast_probes;
+	t->neigh_vars[2].data  = &p->app_probes;
+	t->neigh_vars[3].data  = &p->retrans_time;
+	t->neigh_vars[4].data  = &p->base_reachable_time;
+	t->neigh_vars[5].data  = &p->delay_probe_time;
+	t->neigh_vars[6].data  = &p->gc_staletime;
+	t->neigh_vars[7].data  = &p->queue_len;
+	t->neigh_vars[8].data  = &p->proxy_qlen;
+	t->neigh_vars[9].data  = &p->anycast_delay;
+	t->neigh_vars[10].data = &p->proxy_delay;
+	t->neigh_vars[11].data = &p->locktime;
+	t->neigh_vars[12].data  = &p->retrans_time;
+	t->neigh_vars[13].data  = &p->base_reachable_time;
+
+	if (dev) {
+		dev_name_source = dev->name;
+		neigh_path[NEIGH_CTL_PATH_DEV].ctl_name = dev->ifindex;
+		/* Terminate the table early */
+		memset(&t->neigh_vars[14], 0, sizeof(t->neigh_vars[14]));
+	} else {
+		dev_name_source = neigh_path[NEIGH_CTL_PATH_DEV].procname;
+		t->neigh_vars[14].data = (int *)(p + 1);
+		t->neigh_vars[15].data = (int *)(p + 1) + 1;
+		t->neigh_vars[16].data = (int *)(p + 1) + 2;
+		t->neigh_vars[17].data = (int *)(p + 1) + 3;
+	}
+
+
+	if (handler || strategy) {
+		/* RetransTime */
+		t->neigh_vars[3].proc_handler = handler;
+		t->neigh_vars[3].strategy = strategy;
+		t->neigh_vars[3].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[3].ctl_name = CTL_UNNUMBERED;
+		/* ReachableTime */
+		t->neigh_vars[4].proc_handler = handler;
+		t->neigh_vars[4].strategy = strategy;
+		t->neigh_vars[4].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[4].ctl_name = CTL_UNNUMBERED;
+		/* RetransTime (in milliseconds)*/
+		t->neigh_vars[12].proc_handler = handler;
+		t->neigh_vars[12].strategy = strategy;
+		t->neigh_vars[12].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[12].ctl_name = CTL_UNNUMBERED;
+		/* ReachableTime (in milliseconds) */
+		t->neigh_vars[13].proc_handler = handler;
+		t->neigh_vars[13].strategy = strategy;
+		t->neigh_vars[13].extra1 = dev;
+		if (!strategy)
+			t->neigh_vars[13].ctl_name = CTL_UNNUMBERED;
+	}
+
+	t->dev_name = kstrdup(dev_name_source, GFP_KERNEL);
+	if (!t->dev_name)
+		goto free;
+
+	neigh_path[NEIGH_CTL_PATH_DEV].procname = t->dev_name;
+	neigh_path[NEIGH_CTL_PATH_NEIGH].ctl_name = pdev_id;
+	neigh_path[NEIGH_CTL_PATH_PROTO].procname = p_name;
+	neigh_path[NEIGH_CTL_PATH_PROTO].ctl_name = p_id;
+
+	t->sysctl_header =
+		register_net_sysctl_table(neigh_parms_net(p), neigh_path, t->neigh_vars);
+	if (!t->sysctl_header)
+		goto free_procname;
+
+	p->sysctl_table = t;
+	return 0;
+
+free_procname:
+	kfree(t->dev_name);
+free:
+	kfree(t);
+err:
+	return -ENOBUFS;
+}
+EXPORT_SYMBOL(neigh_sysctl_register);
+
+void neigh_sysctl_unregister(struct neigh_parms *p)
+{
+	if (p->sysctl_table) {
+		struct neigh_sysctl_table *t = p->sysctl_table;
+		p->sysctl_table = NULL;
+		unregister_sysctl_table(t->sysctl_header);
+		kfree(t->dev_name);
+		kfree(t);
+	}
+}
+EXPORT_SYMBOL(neigh_sysctl_unregister);
+
+#endif	/* CONFIG_SYSCTL */
+
+static int __init neigh_init(void)
+{
+	rtnl_register(PF_UNSPEC, RTM_NEWNEIGH, neigh_add, NULL);
+	rtnl_register(PF_UNSPEC, RTM_DELNEIGH, neigh_delete, NULL);
+	rtnl_register(PF_UNSPEC, RTM_GETNEIGH, NULL, neigh_dump_info);
+
+	rtnl_register(PF_UNSPEC, RTM_GETNEIGHTBL, NULL, neightbl_dump_info);
+	rtnl_register(PF_UNSPEC, RTM_SETNEIGHTBL, neightbl_set, NULL);
+
+	return 0;
+}
+
+subsys_initcall(neigh_init);
+
diff --git a/libdde_linux26/contrib/net/core/net-sysfs.c b/libdde_linux26/contrib/net/core/net-sysfs.c
new file mode 100644
index 00000000..484f5875
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/net-sysfs.c
@@ -0,0 +1,540 @@
+/*
+ * net-sysfs.c - network device class and attributes
+ *
+ * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/capability.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <net/sock.h>
+#include <linux/rtnetlink.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+
+#include "net-sysfs.h"
+
+#ifdef CONFIG_SYSFS
+static const char fmt_hex[] = "%#x\n";
+static const char fmt_long_hex[] = "%#lx\n";
+static const char fmt_dec[] = "%d\n";
+static const char fmt_ulong[] = "%lu\n";
+
+static inline int dev_isalive(const struct net_device *dev)
+{
+	return dev->reg_state <= NETREG_REGISTERED;
+}
+
+/* use same locking rules as GIF* ioctl's */
+static ssize_t netdev_show(const struct device *dev,
+			   struct device_attribute *attr, char *buf,
+			   ssize_t (*format)(const struct net_device *, char *))
+{
+	struct net_device *net = to_net_dev(dev);
+	ssize_t ret = -EINVAL;
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(net))
+		ret = (*format)(net, buf);
+	read_unlock(&dev_base_lock);
+
+	return ret;
+}
+
+/* generate a show function for simple field */
+#define NETDEVICE_SHOW(field, format_string)				\
+static ssize_t format_##field(const struct net_device *net, char *buf)	\
+{									\
+	return sprintf(buf, format_string, net->field);			\
+}									\
+static ssize_t show_##field(struct device *dev,				\
+			    struct device_attribute *attr, char *buf)	\
+{									\
+	return netdev_show(dev, attr, buf, format_##field);		\
+}
+
+
+/* use same locking and permission rules as SIF* ioctl's */
+static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t len,
+			    int (*set)(struct net_device *, unsigned long))
+{
+	struct net_device *net = to_net_dev(dev);
+	char *endp;
+	unsigned long new;
+	int ret = -EINVAL;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	new = simple_strtoul(buf, &endp, 0);
+	if (endp == buf)
+		goto err;
+
+	if (!rtnl_trylock())
+		return -ERESTARTSYS;
+
+	if (dev_isalive(net)) {
+		if ((ret = (*set)(net, new)) == 0)
+			ret = len;
+	}
+	rtnl_unlock();
+ err:
+	return ret;
+}
+
+NETDEVICE_SHOW(dev_id, fmt_hex);
+NETDEVICE_SHOW(addr_len, fmt_dec);
+NETDEVICE_SHOW(iflink, fmt_dec);
+NETDEVICE_SHOW(ifindex, fmt_dec);
+NETDEVICE_SHOW(features, fmt_long_hex);
+NETDEVICE_SHOW(type, fmt_dec);
+NETDEVICE_SHOW(link_mode, fmt_dec);
+
+/* use same locking rules as GIFHWADDR ioctl's */
+static ssize_t show_address(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	struct net_device *net = to_net_dev(dev);
+	ssize_t ret = -EINVAL;
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(net))
+		ret = sysfs_format_mac(buf, net->dev_addr, net->addr_len);
+	read_unlock(&dev_base_lock);
+	return ret;
+}
+
+static ssize_t show_broadcast(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct net_device *net = to_net_dev(dev);
+	if (dev_isalive(net))
+		return sysfs_format_mac(buf, net->broadcast, net->addr_len);
+	return -EINVAL;
+}
+
+static ssize_t show_carrier(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct net_device *netdev = to_net_dev(dev);
+	if (netif_running(netdev)) {
+		return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev));
+	}
+	return -EINVAL;
+}
+
+static ssize_t show_dormant(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct net_device *netdev = to_net_dev(dev);
+
+	if (netif_running(netdev))
+		return sprintf(buf, fmt_dec, !!netif_dormant(netdev));
+
+	return -EINVAL;
+}
+
+static const char *operstates[] = {
+	"unknown",
+	"notpresent", /* currently unused */
+	"down",
+	"lowerlayerdown",
+	"testing", /* currently unused */
+	"dormant",
+	"up"
+};
+
+static ssize_t show_operstate(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	const struct net_device *netdev = to_net_dev(dev);
+	unsigned char operstate;
+
+	read_lock(&dev_base_lock);
+	operstate = netdev->operstate;
+	if (!netif_running(netdev))
+		operstate = IF_OPER_DOWN;
+	read_unlock(&dev_base_lock);
+
+	if (operstate >= ARRAY_SIZE(operstates))
+		return -EINVAL; /* should not happen */
+
+	return sprintf(buf, "%s\n", operstates[operstate]);
+}
+
+/* read-write attributes */
+NETDEVICE_SHOW(mtu, fmt_dec);
+
+static int change_mtu(struct net_device *net, unsigned long new_mtu)
+{
+	return dev_set_mtu(net, (int) new_mtu);
+}
+
+static ssize_t store_mtu(struct device *dev, struct device_attribute *attr,
+			 const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_mtu);
+}
+
+NETDEVICE_SHOW(flags, fmt_hex);
+
+static int change_flags(struct net_device *net, unsigned long new_flags)
+{
+	return dev_change_flags(net, (unsigned) new_flags);
+}
+
+static ssize_t store_flags(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_flags);
+}
+
+NETDEVICE_SHOW(tx_queue_len, fmt_ulong);
+
+static int change_tx_queue_len(struct net_device *net, unsigned long new_len)
+{
+	net->tx_queue_len = new_len;
+	return 0;
+}
+
+static ssize_t store_tx_queue_len(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_tx_queue_len);
+}
+
+static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr,
+			     const char *buf, size_t len)
+{
+	struct net_device *netdev = to_net_dev(dev);
+	size_t count = len;
+	ssize_t ret;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	/* ignore trailing newline */
+	if (len >  0 && buf[len - 1] == '\n')
+		--count;
+
+	rtnl_lock();
+	ret = dev_set_alias(netdev, buf, count);
+	rtnl_unlock();
+
+	return ret < 0 ? ret : len;
+}
+
+static ssize_t show_ifalias(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	const struct net_device *netdev = to_net_dev(dev);
+	ssize_t ret = 0;
+
+	rtnl_lock();
+	if (netdev->ifalias)
+		ret = sprintf(buf, "%s\n", netdev->ifalias);
+	rtnl_unlock();
+	return ret;
+}
+
+static struct device_attribute net_class_attributes[] = {
+	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
+	__ATTR(dev_id, S_IRUGO, show_dev_id, NULL),
+	__ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias),
+	__ATTR(iflink, S_IRUGO, show_iflink, NULL),
+	__ATTR(ifindex, S_IRUGO, show_ifindex, NULL),
+	__ATTR(features, S_IRUGO, show_features, NULL),
+	__ATTR(type, S_IRUGO, show_type, NULL),
+	__ATTR(link_mode, S_IRUGO, show_link_mode, NULL),
+	__ATTR(address, S_IRUGO, show_address, NULL),
+	__ATTR(broadcast, S_IRUGO, show_broadcast, NULL),
+	__ATTR(carrier, S_IRUGO, show_carrier, NULL),
+	__ATTR(dormant, S_IRUGO, show_dormant, NULL),
+	__ATTR(operstate, S_IRUGO, show_operstate, NULL),
+	__ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu),
+	__ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),
+	__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,
+	       store_tx_queue_len),
+	{}
+};
+
+/* Show a given an attribute in the statistics group */
+static ssize_t netstat_show(const struct device *d,
+			    struct device_attribute *attr, char *buf,
+			    unsigned long offset)
+{
+	struct net_device *dev = to_net_dev(d);
+	ssize_t ret = -EINVAL;
+
+	WARN_ON(offset > sizeof(struct net_device_stats) ||
+			offset % sizeof(unsigned long) != 0);
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(dev)) {
+		const struct net_device_stats *stats = dev_get_stats(dev);
+		ret = sprintf(buf, fmt_ulong,
+			      *(unsigned long *)(((u8 *) stats) + offset));
+	}
+	read_unlock(&dev_base_lock);
+	return ret;
+}
+
+/* generate a read-only statistics attribute */
+#define NETSTAT_ENTRY(name)						\
+static ssize_t show_##name(struct device *d,				\
+			   struct device_attribute *attr, char *buf) 	\
+{									\
+	return netstat_show(d, attr, buf,				\
+			    offsetof(struct net_device_stats, name));	\
+}									\
+static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
+
+NETSTAT_ENTRY(rx_packets);
+NETSTAT_ENTRY(tx_packets);
+NETSTAT_ENTRY(rx_bytes);
+NETSTAT_ENTRY(tx_bytes);
+NETSTAT_ENTRY(rx_errors);
+NETSTAT_ENTRY(tx_errors);
+NETSTAT_ENTRY(rx_dropped);
+NETSTAT_ENTRY(tx_dropped);
+NETSTAT_ENTRY(multicast);
+NETSTAT_ENTRY(collisions);
+NETSTAT_ENTRY(rx_length_errors);
+NETSTAT_ENTRY(rx_over_errors);
+NETSTAT_ENTRY(rx_crc_errors);
+NETSTAT_ENTRY(rx_frame_errors);
+NETSTAT_ENTRY(rx_fifo_errors);
+NETSTAT_ENTRY(rx_missed_errors);
+NETSTAT_ENTRY(tx_aborted_errors);
+NETSTAT_ENTRY(tx_carrier_errors);
+NETSTAT_ENTRY(tx_fifo_errors);
+NETSTAT_ENTRY(tx_heartbeat_errors);
+NETSTAT_ENTRY(tx_window_errors);
+NETSTAT_ENTRY(rx_compressed);
+NETSTAT_ENTRY(tx_compressed);
+
+static struct attribute *netstat_attrs[] = {
+	&dev_attr_rx_packets.attr,
+	&dev_attr_tx_packets.attr,
+	&dev_attr_rx_bytes.attr,
+	&dev_attr_tx_bytes.attr,
+	&dev_attr_rx_errors.attr,
+	&dev_attr_tx_errors.attr,
+	&dev_attr_rx_dropped.attr,
+	&dev_attr_tx_dropped.attr,
+	&dev_attr_multicast.attr,
+	&dev_attr_collisions.attr,
+	&dev_attr_rx_length_errors.attr,
+	&dev_attr_rx_over_errors.attr,
+	&dev_attr_rx_crc_errors.attr,
+	&dev_attr_rx_frame_errors.attr,
+	&dev_attr_rx_fifo_errors.attr,
+	&dev_attr_rx_missed_errors.attr,
+	&dev_attr_tx_aborted_errors.attr,
+	&dev_attr_tx_carrier_errors.attr,
+	&dev_attr_tx_fifo_errors.attr,
+	&dev_attr_tx_heartbeat_errors.attr,
+	&dev_attr_tx_window_errors.attr,
+	&dev_attr_rx_compressed.attr,
+	&dev_attr_tx_compressed.attr,
+	NULL
+};
+
+
+static struct attribute_group netstat_group = {
+	.name  = "statistics",
+	.attrs  = netstat_attrs,
+};
+
+#ifdef CONFIG_WIRELESS_EXT_SYSFS
+/* helper function that does all the locking etc for wireless stats */
+static ssize_t wireless_show(struct device *d, char *buf,
+			     ssize_t (*format)(const struct iw_statistics *,
+					       char *))
+{
+	struct net_device *dev = to_net_dev(d);
+	const struct iw_statistics *iw = NULL;
+	ssize_t ret = -EINVAL;
+
+	read_lock(&dev_base_lock);
+	if (dev_isalive(dev)) {
+		if (dev->wireless_handlers &&
+		    dev->wireless_handlers->get_wireless_stats)
+			iw = dev->wireless_handlers->get_wireless_stats(dev);
+		if (iw != NULL)
+			ret = (*format)(iw, buf);
+	}
+	read_unlock(&dev_base_lock);
+
+	return ret;
+}
+
+/* show function template for wireless fields */
+#define WIRELESS_SHOW(name, field, format_string)			\
+static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \
+{									\
+	return sprintf(buf, format_string, iw->field);			\
+}									\
+static ssize_t show_iw_##name(struct device *d,				\
+			      struct device_attribute *attr, char *buf)	\
+{									\
+	return wireless_show(d, buf, format_iw_##name);			\
+}									\
+static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL)
+
+WIRELESS_SHOW(status, status, fmt_hex);
+WIRELESS_SHOW(link, qual.qual, fmt_dec);
+WIRELESS_SHOW(level, qual.level, fmt_dec);
+WIRELESS_SHOW(noise, qual.noise, fmt_dec);
+WIRELESS_SHOW(nwid, discard.nwid, fmt_dec);
+WIRELESS_SHOW(crypt, discard.code, fmt_dec);
+WIRELESS_SHOW(fragment, discard.fragment, fmt_dec);
+WIRELESS_SHOW(misc, discard.misc, fmt_dec);
+WIRELESS_SHOW(retries, discard.retries, fmt_dec);
+WIRELESS_SHOW(beacon, miss.beacon, fmt_dec);
+
+static struct attribute *wireless_attrs[] = {
+	&dev_attr_status.attr,
+	&dev_attr_link.attr,
+	&dev_attr_level.attr,
+	&dev_attr_noise.attr,
+	&dev_attr_nwid.attr,
+	&dev_attr_crypt.attr,
+	&dev_attr_fragment.attr,
+	&dev_attr_retries.attr,
+	&dev_attr_misc.attr,
+	&dev_attr_beacon.attr,
+	NULL
+};
+
+static struct attribute_group wireless_group = {
+	.name = "wireless",
+	.attrs = wireless_attrs,
+};
+#endif
+
+#endif /* CONFIG_SYSFS */
+
+#ifdef CONFIG_HOTPLUG
+static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
+{
+	struct net_device *dev = to_net_dev(d);
+	int retval;
+
+	if (!net_eq(dev_net(dev), &init_net))
+		return 0;
+
+	/* pass interface to uevent. */
+	retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
+	if (retval)
+		goto exit;
+
+	/* pass ifindex to uevent.
+	 * ifindex is useful as it won't change (interface name may change)
+	 * and is what RtNetlink uses natively. */
+	retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex);
+
+exit:
+	return retval;
+}
+#endif
+
+/*
+ *	netdev_release -- destroy and free a dead device.
+ *	Called when last reference to device kobject is gone.
+ */
+static void netdev_release(struct device *d)
+{
+	struct net_device *dev = to_net_dev(d);
+
+	BUG_ON(dev->reg_state != NETREG_RELEASED);
+
+	kfree(dev->ifalias);
+	kfree((char *)dev - dev->padded);
+}
+
+static struct class net_class = {
+	.name = "net",
+	.dev_release = netdev_release,
+#ifdef CONFIG_SYSFS
+	.dev_attrs = net_class_attributes,
+#endif /* CONFIG_SYSFS */
+#ifdef CONFIG_HOTPLUG
+	.dev_uevent = netdev_uevent,
+#endif
+};
+
+/* Delete sysfs entries but hold kobject reference until after all
+ * netdev references are gone.
+ */
+void netdev_unregister_kobject(struct net_device * net)
+{
+	struct device *dev = &(net->dev);
+
+	kobject_get(&dev->kobj);
+
+	if (dev_net(net) != &init_net)
+		return;
+
+	device_del(dev);
+}
+
+/* Create sysfs entries for network device. */
+int netdev_register_kobject(struct net_device *net)
+{
+	struct device *dev = &(net->dev);
+	struct attribute_group **groups = net->sysfs_groups;
+
+	dev->class = &net_class;
+	dev->platform_data = net;
+	dev->groups = groups;
+
+	BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ);
+	dev_set_name(dev, net->name);
+
+#ifdef CONFIG_SYSFS
+	*groups++ = &netstat_group;
+
+#ifdef CONFIG_WIRELESS_EXT_SYSFS
+	if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats)
+		*groups++ = &wireless_group;
+#endif
+#endif /* CONFIG_SYSFS */
+
+	if (dev_net(net) != &init_net)
+		return 0;
+
+	return device_add(dev);
+}
+
+int netdev_class_create_file(struct class_attribute *class_attr)
+{
+	return class_create_file(&net_class, class_attr);
+}
+
+void netdev_class_remove_file(struct class_attribute *class_attr)
+{
+	class_remove_file(&net_class, class_attr);
+}
+
+EXPORT_SYMBOL(netdev_class_create_file);
+EXPORT_SYMBOL(netdev_class_remove_file);
+
+void netdev_initialize_kobject(struct net_device *net)
+{
+	struct device *device = &(net->dev);
+	device_initialize(device);
+}
+
+int netdev_kobject_init(void)
+{
+	return class_register(&net_class);
+}
diff --git a/libdde_linux26/contrib/net/core/net-sysfs.h b/libdde_linux26/contrib/net/core/net-sysfs.h
new file mode 100644
index 00000000..14e75242
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/net-sysfs.h
@@ -0,0 +1,8 @@
+#ifndef __NET_SYSFS_H__
+#define __NET_SYSFS_H__
+
+int netdev_kobject_init(void);
+int netdev_register_kobject(struct net_device *);
+void netdev_unregister_kobject(struct net_device *);
+void netdev_initialize_kobject(struct net_device *);
+#endif
diff --git a/libdde_linux26/contrib/net/core/netevent.c b/libdde_linux26/contrib/net/core/netevent.c
new file mode 100644
index 00000000..95f81de8
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/netevent.c
@@ -0,0 +1,70 @@
+/*
+ *	Network event notifiers
+ *
+ *	Authors:
+ *      Tom Tucker             <tom@opengridcomputing.com>
+ *      Steve Wise             <swise@opengridcomputing.com>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *	Fixes:
+ */
+
+#include <linux/rtnetlink.h>
+#include <linux/notifier.h>
+#include <net/netevent.h>
+
+static ATOMIC_NOTIFIER_HEAD(netevent_notif_chain);
+
+/**
+ *	register_netevent_notifier - register a netevent notifier block
+ *	@nb: notifier
+ *
+ *	Register a notifier to be called when a netevent occurs.
+ *	The notifier passed is linked into the kernel structures and must
+ *	not be reused until it has been unregistered. A negative errno code
+ *	is returned on a failure.
+ */
+int register_netevent_notifier(struct notifier_block *nb)
+{
+	int err;
+
+	err = atomic_notifier_chain_register(&netevent_notif_chain, nb);
+	return err;
+}
+
+/**
+ *	netevent_unregister_notifier - unregister a netevent notifier block
+ *	@nb: notifier
+ *
+ *	Unregister a notifier previously registered by
+ *	register_neigh_notifier(). The notifier is unlinked into the
+ *	kernel structures and may then be reused. A negative errno code
+ *	is returned on a failure.
+ */
+
+int unregister_netevent_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&netevent_notif_chain, nb);
+}
+
+/**
+ *	call_netevent_notifiers - call all netevent notifier blocks
+ *      @val: value passed unmodified to notifier function
+ *      @v:   pointer passed unmodified to notifier function
+ *
+ *	Call all neighbour notifier blocks.  Parameters and return value
+ *	are as for notifier_call_chain().
+ */
+
+int call_netevent_notifiers(unsigned long val, void *v)
+{
+	return atomic_notifier_call_chain(&netevent_notif_chain, val, v);
+}
+
+EXPORT_SYMBOL_GPL(register_netevent_notifier);
+EXPORT_SYMBOL_GPL(unregister_netevent_notifier);
+EXPORT_SYMBOL_GPL(call_netevent_notifiers);
diff --git a/libdde_linux26/contrib/net/core/rtnetlink.c b/libdde_linux26/contrib/net/core/rtnetlink.c
new file mode 100644
index 00000000..790dd205
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/rtnetlink.c
@@ -0,0 +1,1430 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Routing netlink socket interface: protocol independent part.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *	Fixes:
+ *	Vitaly E. Lavrov		RTA_OK arithmetics was wrong.
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/capability.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/security.h>
+#include <linux/mutex.h>
+#include <linux/if_addr.h>
+#include <linux/nsproxy.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/string.h>
+
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <net/ip.h>
+#include <net/protocol.h>
+#include <net/arp.h>
+#include <net/route.h>
+#include <net/udp.h>
+#include <net/sock.h>
+#include <net/pkt_sched.h>
+#include <net/fib_rules.h>
+#include <net/rtnetlink.h>
+
+struct rtnl_link
+{
+	rtnl_doit_func		doit;
+	rtnl_dumpit_func	dumpit;
+};
+
+static DEFINE_MUTEX(rtnl_mutex);
+
+void rtnl_lock(void)
+{
+	mutex_lock(&rtnl_mutex);
+}
+
+void __rtnl_unlock(void)
+{
+	mutex_unlock(&rtnl_mutex);
+}
+
+void rtnl_unlock(void)
+{
+	/* This fellow will unlock it for us. */
+	netdev_run_todo();
+}
+
+int rtnl_trylock(void)
+{
+	return mutex_trylock(&rtnl_mutex);
+}
+
+int rtnl_is_locked(void)
+{
+	return mutex_is_locked(&rtnl_mutex);
+}
+
+static struct rtnl_link *rtnl_msg_handlers[NPROTO];
+
+static inline int rtm_msgindex(int msgtype)
+{
+	int msgindex = msgtype - RTM_BASE;
+
+	/*
+	 * msgindex < 0 implies someone tried to register a netlink
+	 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
+	 * the message type has not been added to linux/rtnetlink.h
+	 */
+	BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES);
+
+	return msgindex;
+}
+
+static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex)
+{
+	struct rtnl_link *tab;
+
+	tab = rtnl_msg_handlers[protocol];
+	if (tab == NULL || tab[msgindex].doit == NULL)
+		tab = rtnl_msg_handlers[PF_UNSPEC];
+
+	return tab ? tab[msgindex].doit : NULL;
+}
+
+static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex)
+{
+	struct rtnl_link *tab;
+
+	tab = rtnl_msg_handlers[protocol];
+	if (tab == NULL || tab[msgindex].dumpit == NULL)
+		tab = rtnl_msg_handlers[PF_UNSPEC];
+
+	return tab ? tab[msgindex].dumpit : NULL;
+}
+
+/**
+ * __rtnl_register - Register a rtnetlink message type
+ * @protocol: Protocol family or PF_UNSPEC
+ * @msgtype: rtnetlink message type
+ * @doit: Function pointer called for each request message
+ * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
+ *
+ * Registers the specified function pointers (at least one of them has
+ * to be non-NULL) to be called whenever a request message for the
+ * specified protocol family and message type is received.
+ *
+ * The special protocol family PF_UNSPEC may be used to define fallback
+ * function pointers for the case when no entry for the specific protocol
+ * family exists.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int __rtnl_register(int protocol, int msgtype,
+		    rtnl_doit_func doit, rtnl_dumpit_func dumpit)
+{
+	struct rtnl_link *tab;
+	int msgindex;
+
+	BUG_ON(protocol < 0 || protocol >= NPROTO);
+	msgindex = rtm_msgindex(msgtype);
+
+	tab = rtnl_msg_handlers[protocol];
+	if (tab == NULL) {
+		tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL);
+		if (tab == NULL)
+			return -ENOBUFS;
+
+		rtnl_msg_handlers[protocol] = tab;
+	}
+
+	if (doit)
+		tab[msgindex].doit = doit;
+
+	if (dumpit)
+		tab[msgindex].dumpit = dumpit;
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(__rtnl_register);
+
+/**
+ * rtnl_register - Register a rtnetlink message type
+ *
+ * Identical to __rtnl_register() but panics on failure. This is useful
+ * as failure of this function is very unlikely, it can only happen due
+ * to lack of memory when allocating the chain to store all message
+ * handlers for a protocol. Meant for use in init functions where lack
+ * of memory implies no sense in continueing.
+ */
+void rtnl_register(int protocol, int msgtype,
+		   rtnl_doit_func doit, rtnl_dumpit_func dumpit)
+{
+	if (__rtnl_register(protocol, msgtype, doit, dumpit) < 0)
+		panic("Unable to register rtnetlink message handler, "
+		      "protocol = %d, message type = %d\n",
+		      protocol, msgtype);
+}
+
+EXPORT_SYMBOL_GPL(rtnl_register);
+
+/**
+ * rtnl_unregister - Unregister a rtnetlink message type
+ * @protocol: Protocol family or PF_UNSPEC
+ * @msgtype: rtnetlink message type
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int rtnl_unregister(int protocol, int msgtype)
+{
+	int msgindex;
+
+	BUG_ON(protocol < 0 || protocol >= NPROTO);
+	msgindex = rtm_msgindex(msgtype);
+
+	if (rtnl_msg_handlers[protocol] == NULL)
+		return -ENOENT;
+
+	rtnl_msg_handlers[protocol][msgindex].doit = NULL;
+	rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(rtnl_unregister);
+
+/**
+ * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
+ * @protocol : Protocol family or PF_UNSPEC
+ *
+ * Identical to calling rtnl_unregster() for all registered message types
+ * of a certain protocol family.
+ */
+void rtnl_unregister_all(int protocol)
+{
+	BUG_ON(protocol < 0 || protocol >= NPROTO);
+
+	kfree(rtnl_msg_handlers[protocol]);
+	rtnl_msg_handlers[protocol] = NULL;
+}
+
+EXPORT_SYMBOL_GPL(rtnl_unregister_all);
+
+static LIST_HEAD(link_ops);
+
+/**
+ * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
+ * @ops: struct rtnl_link_ops * to register
+ *
+ * The caller must hold the rtnl_mutex. This function should be used
+ * by drivers that create devices during module initialization. It
+ * must be called before registering the devices.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int __rtnl_link_register(struct rtnl_link_ops *ops)
+{
+	if (!ops->dellink)
+		ops->dellink = unregister_netdevice;
+
+	list_add_tail(&ops->list, &link_ops);
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(__rtnl_link_register);
+
+/**
+ * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
+ * @ops: struct rtnl_link_ops * to register
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int rtnl_link_register(struct rtnl_link_ops *ops)
+{
+	int err;
+
+	rtnl_lock();
+	err = __rtnl_link_register(ops);
+	rtnl_unlock();
+	return err;
+}
+
+EXPORT_SYMBOL_GPL(rtnl_link_register);
+
+static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
+{
+	struct net_device *dev;
+restart:
+	for_each_netdev(net, dev) {
+		if (dev->rtnl_link_ops == ops) {
+			ops->dellink(dev);
+			goto restart;
+		}
+	}
+}
+
+void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
+{
+	rtnl_lock();
+	__rtnl_kill_links(net, ops);
+	rtnl_unlock();
+}
+EXPORT_SYMBOL_GPL(rtnl_kill_links);
+
+/**
+ * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
+ * @ops: struct rtnl_link_ops * to unregister
+ *
+ * The caller must hold the rtnl_mutex.
+ */
+void __rtnl_link_unregister(struct rtnl_link_ops *ops)
+{
+	struct net *net;
+
+	for_each_net(net) {
+		__rtnl_kill_links(net, ops);
+	}
+	list_del(&ops->list);
+}
+
+EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
+
+/**
+ * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
+ * @ops: struct rtnl_link_ops * to unregister
+ */
+void rtnl_link_unregister(struct rtnl_link_ops *ops)
+{
+	rtnl_lock();
+	__rtnl_link_unregister(ops);
+	rtnl_unlock();
+}
+
+EXPORT_SYMBOL_GPL(rtnl_link_unregister);
+
+static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
+{
+	const struct rtnl_link_ops *ops;
+
+	list_for_each_entry(ops, &link_ops, list) {
+		if (!strcmp(ops->kind, kind))
+			return ops;
+	}
+	return NULL;
+}
+
+static size_t rtnl_link_get_size(const struct net_device *dev)
+{
+	const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
+	size_t size;
+
+	if (!ops)
+		return 0;
+
+	size = nlmsg_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */
+	       nlmsg_total_size(strlen(ops->kind) + 1);	 /* IFLA_INFO_KIND */
+
+	if (ops->get_size)
+		/* IFLA_INFO_DATA + nested data */
+		size += nlmsg_total_size(sizeof(struct nlattr)) +
+			ops->get_size(dev);
+
+	if (ops->get_xstats_size)
+		size += ops->get_xstats_size(dev);	/* IFLA_INFO_XSTATS */
+
+	return size;
+}
+
+static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
+{
+	const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
+	struct nlattr *linkinfo, *data;
+	int err = -EMSGSIZE;
+
+	linkinfo = nla_nest_start(skb, IFLA_LINKINFO);
+	if (linkinfo == NULL)
+		goto out;
+
+	if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0)
+		goto err_cancel_link;
+	if (ops->fill_xstats) {
+		err = ops->fill_xstats(skb, dev);
+		if (err < 0)
+			goto err_cancel_link;
+	}
+	if (ops->fill_info) {
+		data = nla_nest_start(skb, IFLA_INFO_DATA);
+		if (data == NULL)
+			goto err_cancel_link;
+		err = ops->fill_info(skb, dev);
+		if (err < 0)
+			goto err_cancel_data;
+		nla_nest_end(skb, data);
+	}
+
+	nla_nest_end(skb, linkinfo);
+	return 0;
+
+err_cancel_data:
+	nla_nest_cancel(skb, data);
+err_cancel_link:
+	nla_nest_cancel(skb, linkinfo);
+out:
+	return err;
+}
+
+static const int rtm_min[RTM_NR_FAMILIES] =
+{
+	[RTM_FAM(RTM_NEWLINK)]      = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+	[RTM_FAM(RTM_NEWADDR)]      = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
+	[RTM_FAM(RTM_NEWROUTE)]     = NLMSG_LENGTH(sizeof(struct rtmsg)),
+	[RTM_FAM(RTM_NEWRULE)]      = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)),
+	[RTM_FAM(RTM_NEWQDISC)]     = NLMSG_LENGTH(sizeof(struct tcmsg)),
+	[RTM_FAM(RTM_NEWTCLASS)]    = NLMSG_LENGTH(sizeof(struct tcmsg)),
+	[RTM_FAM(RTM_NEWTFILTER)]   = NLMSG_LENGTH(sizeof(struct tcmsg)),
+	[RTM_FAM(RTM_NEWACTION)]    = NLMSG_LENGTH(sizeof(struct tcamsg)),
+	[RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+	[RTM_FAM(RTM_GETANYCAST)]   = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+};
+
+static const int rta_max[RTM_NR_FAMILIES] =
+{
+	[RTM_FAM(RTM_NEWLINK)]      = IFLA_MAX,
+	[RTM_FAM(RTM_NEWADDR)]      = IFA_MAX,
+	[RTM_FAM(RTM_NEWROUTE)]     = RTA_MAX,
+	[RTM_FAM(RTM_NEWRULE)]      = FRA_MAX,
+	[RTM_FAM(RTM_NEWQDISC)]     = TCA_MAX,
+	[RTM_FAM(RTM_NEWTCLASS)]    = TCA_MAX,
+	[RTM_FAM(RTM_NEWTFILTER)]   = TCA_MAX,
+	[RTM_FAM(RTM_NEWACTION)]    = TCAA_MAX,
+};
+
+void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
+{
+	struct rtattr *rta;
+	int size = RTA_LENGTH(attrlen);
+
+	rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
+	rta->rta_type = attrtype;
+	rta->rta_len = size;
+	memcpy(RTA_DATA(rta), data, attrlen);
+	memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
+}
+
+int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned group, int echo)
+{
+	struct sock *rtnl = net->rtnl;
+	int err = 0;
+
+	NETLINK_CB(skb).dst_group = group;
+	if (echo)
+		atomic_inc(&skb->users);
+	netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
+	if (echo)
+		err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
+	return err;
+}
+
+int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid)
+{
+	struct sock *rtnl = net->rtnl;
+
+	return nlmsg_unicast(rtnl, skb, pid);
+}
+
+int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
+		struct nlmsghdr *nlh, gfp_t flags)
+{
+	struct sock *rtnl = net->rtnl;
+	int report = 0;
+
+	if (nlh)
+		report = nlmsg_report(nlh);
+
+	return nlmsg_notify(rtnl, skb, pid, group, report, flags);
+}
+
+void rtnl_set_sk_err(struct net *net, u32 group, int error)
+{
+	struct sock *rtnl = net->rtnl;
+
+	netlink_set_err(rtnl, 0, group, error);
+}
+
+int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
+{
+	struct nlattr *mx;
+	int i, valid = 0;
+
+	mx = nla_nest_start(skb, RTA_METRICS);
+	if (mx == NULL)
+		return -ENOBUFS;
+
+	for (i = 0; i < RTAX_MAX; i++) {
+		if (metrics[i]) {
+			valid++;
+			NLA_PUT_U32(skb, i+1, metrics[i]);
+		}
+	}
+
+	if (!valid) {
+		nla_nest_cancel(skb, mx);
+		return 0;
+	}
+
+	return nla_nest_end(skb, mx);
+
+nla_put_failure:
+	nla_nest_cancel(skb, mx);
+	return -EMSGSIZE;
+}
+
+int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
+		       u32 ts, u32 tsage, long expires, u32 error)
+{
+	struct rta_cacheinfo ci = {
+		.rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse),
+		.rta_used = dst->__use,
+		.rta_clntref = atomic_read(&(dst->__refcnt)),
+		.rta_error = error,
+		.rta_id =  id,
+		.rta_ts = ts,
+		.rta_tsage = tsage,
+	};
+
+	if (expires)
+		ci.rta_expires = jiffies_to_clock_t(expires);
+
+	return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
+}
+
+EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
+
+static void set_operstate(struct net_device *dev, unsigned char transition)
+{
+	unsigned char operstate = dev->operstate;
+
+	switch(transition) {
+	case IF_OPER_UP:
+		if ((operstate == IF_OPER_DORMANT ||
+		     operstate == IF_OPER_UNKNOWN) &&
+		    !netif_dormant(dev))
+			operstate = IF_OPER_UP;
+		break;
+
+	case IF_OPER_DORMANT:
+		if (operstate == IF_OPER_UP ||
+		    operstate == IF_OPER_UNKNOWN)
+			operstate = IF_OPER_DORMANT;
+		break;
+	}
+
+	if (dev->operstate != operstate) {
+		write_lock_bh(&dev_base_lock);
+		dev->operstate = operstate;
+		write_unlock_bh(&dev_base_lock);
+		netdev_state_change(dev);
+	}
+}
+
+static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
+				 const struct net_device_stats *b)
+{
+	a->rx_packets = b->rx_packets;
+	a->tx_packets = b->tx_packets;
+	a->rx_bytes = b->rx_bytes;
+	a->tx_bytes = b->tx_bytes;
+	a->rx_errors = b->rx_errors;
+	a->tx_errors = b->tx_errors;
+	a->rx_dropped = b->rx_dropped;
+	a->tx_dropped = b->tx_dropped;
+
+	a->multicast = b->multicast;
+	a->collisions = b->collisions;
+
+	a->rx_length_errors = b->rx_length_errors;
+	a->rx_over_errors = b->rx_over_errors;
+	a->rx_crc_errors = b->rx_crc_errors;
+	a->rx_frame_errors = b->rx_frame_errors;
+	a->rx_fifo_errors = b->rx_fifo_errors;
+	a->rx_missed_errors = b->rx_missed_errors;
+
+	a->tx_aborted_errors = b->tx_aborted_errors;
+	a->tx_carrier_errors = b->tx_carrier_errors;
+	a->tx_fifo_errors = b->tx_fifo_errors;
+	a->tx_heartbeat_errors = b->tx_heartbeat_errors;
+	a->tx_window_errors = b->tx_window_errors;
+
+	a->rx_compressed = b->rx_compressed;
+	a->tx_compressed = b->tx_compressed;
+};
+
+static inline size_t if_nlmsg_size(const struct net_device *dev)
+{
+	return NLMSG_ALIGN(sizeof(struct ifinfomsg))
+	       + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
+	       + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
+	       + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
+	       + nla_total_size(sizeof(struct rtnl_link_ifmap))
+	       + nla_total_size(sizeof(struct rtnl_link_stats))
+	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
+	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
+	       + nla_total_size(4) /* IFLA_TXQLEN */
+	       + nla_total_size(4) /* IFLA_WEIGHT */
+	       + nla_total_size(4) /* IFLA_MTU */
+	       + nla_total_size(4) /* IFLA_LINK */
+	       + nla_total_size(4) /* IFLA_MASTER */
+	       + nla_total_size(1) /* IFLA_OPERSTATE */
+	       + nla_total_size(1) /* IFLA_LINKMODE */
+	       + rtnl_link_get_size(dev); /* IFLA_LINKINFO */
+}
+
+static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
+			    int type, u32 pid, u32 seq, u32 change,
+			    unsigned int flags)
+{
+	struct netdev_queue *txq;
+	struct ifinfomsg *ifm;
+	struct nlmsghdr *nlh;
+	const struct net_device_stats *stats;
+	struct nlattr *attr;
+
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	ifm = nlmsg_data(nlh);
+	ifm->ifi_family = AF_UNSPEC;
+	ifm->__ifi_pad = 0;
+	ifm->ifi_type = dev->type;
+	ifm->ifi_index = dev->ifindex;
+	ifm->ifi_flags = dev_get_flags(dev);
+	ifm->ifi_change = change;
+
+	NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
+	NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len);
+	NLA_PUT_U8(skb, IFLA_OPERSTATE,
+		   netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
+	NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode);
+	NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
+
+	if (dev->ifindex != dev->iflink)
+		NLA_PUT_U32(skb, IFLA_LINK, dev->iflink);
+
+	if (dev->master)
+		NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
+
+	txq = netdev_get_tx_queue(dev, 0);
+	if (txq->qdisc_sleeping)
+		NLA_PUT_STRING(skb, IFLA_QDISC, txq->qdisc_sleeping->ops->id);
+
+	if (dev->ifalias)
+		NLA_PUT_STRING(skb, IFLA_IFALIAS, dev->ifalias);
+
+	if (1) {
+		struct rtnl_link_ifmap map = {
+			.mem_start   = dev->mem_start,
+			.mem_end     = dev->mem_end,
+			.base_addr   = dev->base_addr,
+			.irq         = dev->irq,
+			.dma         = dev->dma,
+			.port        = dev->if_port,
+		};
+		NLA_PUT(skb, IFLA_MAP, sizeof(map), &map);
+	}
+
+	if (dev->addr_len) {
+		NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
+		NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast);
+	}
+
+	attr = nla_reserve(skb, IFLA_STATS,
+			sizeof(struct rtnl_link_stats));
+	if (attr == NULL)
+		goto nla_put_failure;
+
+	stats = dev_get_stats(dev);
+	copy_rtnl_link_stats(nla_data(attr), stats);
+
+	if (dev->rtnl_link_ops) {
+		if (rtnl_link_fill(skb, dev) < 0)
+			goto nla_put_failure;
+	}
+
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct net *net = sock_net(skb->sk);
+	int idx;
+	int s_idx = cb->args[0];
+	struct net_device *dev;
+
+	idx = 0;
+	for_each_netdev(net, dev) {
+		if (idx < s_idx)
+			goto cont;
+		if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
+				     NETLINK_CB(cb->skb).pid,
+				     cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0)
+			break;
+cont:
+		idx++;
+	}
+	cb->args[0] = idx;
+
+	return skb->len;
+}
+
+const struct nla_policy ifla_policy[IFLA_MAX+1] = {
+	[IFLA_IFNAME]		= { .type = NLA_STRING, .len = IFNAMSIZ-1 },
+	[IFLA_ADDRESS]		= { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
+	[IFLA_BROADCAST]	= { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
+	[IFLA_MAP]		= { .len = sizeof(struct rtnl_link_ifmap) },
+	[IFLA_MTU]		= { .type = NLA_U32 },
+	[IFLA_LINK]		= { .type = NLA_U32 },
+	[IFLA_TXQLEN]		= { .type = NLA_U32 },
+	[IFLA_WEIGHT]		= { .type = NLA_U32 },
+	[IFLA_OPERSTATE]	= { .type = NLA_U8 },
+	[IFLA_LINKMODE]		= { .type = NLA_U8 },
+	[IFLA_LINKINFO]		= { .type = NLA_NESTED },
+	[IFLA_NET_NS_PID]	= { .type = NLA_U32 },
+	[IFLA_IFALIAS]	        = { .type = NLA_STRING, .len = IFALIASZ-1 },
+};
+
+static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
+	[IFLA_INFO_KIND]	= { .type = NLA_STRING },
+	[IFLA_INFO_DATA]	= { .type = NLA_NESTED },
+};
+
+static struct net *get_net_ns_by_pid(pid_t pid)
+{
+	struct task_struct *tsk;
+	struct net *net;
+
+	/* Lookup the network namespace */
+	net = ERR_PTR(-ESRCH);
+	rcu_read_lock();
+	tsk = find_task_by_vpid(pid);
+	if (tsk) {
+		struct nsproxy *nsproxy;
+		nsproxy = task_nsproxy(tsk);
+		if (nsproxy)
+			net = get_net(nsproxy->net_ns);
+	}
+	rcu_read_unlock();
+	return net;
+}
+
+static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
+{
+	if (dev) {
+		if (tb[IFLA_ADDRESS] &&
+		    nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
+			return -EINVAL;
+
+		if (tb[IFLA_BROADCAST] &&
+		    nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
+		      struct nlattr **tb, char *ifname, int modified)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int send_addr_notify = 0;
+	int err;
+
+	if (tb[IFLA_NET_NS_PID]) {
+		struct net *net;
+		net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
+		if (IS_ERR(net)) {
+			err = PTR_ERR(net);
+			goto errout;
+		}
+		err = dev_change_net_namespace(dev, net, ifname);
+		put_net(net);
+		if (err)
+			goto errout;
+		modified = 1;
+	}
+
+	if (tb[IFLA_MAP]) {
+		struct rtnl_link_ifmap *u_map;
+		struct ifmap k_map;
+
+		if (!ops->ndo_set_config) {
+			err = -EOPNOTSUPP;
+			goto errout;
+		}
+
+		if (!netif_device_present(dev)) {
+			err = -ENODEV;
+			goto errout;
+		}
+
+		u_map = nla_data(tb[IFLA_MAP]);
+		k_map.mem_start = (unsigned long) u_map->mem_start;
+		k_map.mem_end = (unsigned long) u_map->mem_end;
+		k_map.base_addr = (unsigned short) u_map->base_addr;
+		k_map.irq = (unsigned char) u_map->irq;
+		k_map.dma = (unsigned char) u_map->dma;
+		k_map.port = (unsigned char) u_map->port;
+
+		err = ops->ndo_set_config(dev, &k_map);
+		if (err < 0)
+			goto errout;
+
+		modified = 1;
+	}
+
+	if (tb[IFLA_ADDRESS]) {
+		struct sockaddr *sa;
+		int len;
+
+		if (!ops->ndo_set_mac_address) {
+			err = -EOPNOTSUPP;
+			goto errout;
+		}
+
+		if (!netif_device_present(dev)) {
+			err = -ENODEV;
+			goto errout;
+		}
+
+		len = sizeof(sa_family_t) + dev->addr_len;
+		sa = kmalloc(len, GFP_KERNEL);
+		if (!sa) {
+			err = -ENOMEM;
+			goto errout;
+		}
+		sa->sa_family = dev->type;
+		memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
+		       dev->addr_len);
+		err = ops->ndo_set_mac_address(dev, sa);
+		kfree(sa);
+		if (err)
+			goto errout;
+		send_addr_notify = 1;
+		modified = 1;
+	}
+
+	if (tb[IFLA_MTU]) {
+		err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
+		if (err < 0)
+			goto errout;
+		modified = 1;
+	}
+
+	/*
+	 * Interface selected by interface index but interface
+	 * name provided implies that a name change has been
+	 * requested.
+	 */
+	if (ifm->ifi_index > 0 && ifname[0]) {
+		err = dev_change_name(dev, ifname);
+		if (err < 0)
+			goto errout;
+		modified = 1;
+	}
+
+	if (tb[IFLA_IFALIAS]) {
+		err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
+				    nla_len(tb[IFLA_IFALIAS]));
+		if (err < 0)
+			goto errout;
+		modified = 1;
+	}
+
+	if (tb[IFLA_BROADCAST]) {
+		nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
+		send_addr_notify = 1;
+	}
+
+	if (ifm->ifi_flags || ifm->ifi_change) {
+		unsigned int flags = ifm->ifi_flags;
+
+		/* bugwards compatibility: ifi_change == 0 is treated as ~0 */
+		if (ifm->ifi_change)
+			flags = (flags & ifm->ifi_change) |
+				(dev->flags & ~ifm->ifi_change);
+		err = dev_change_flags(dev, flags);
+		if (err < 0)
+			goto errout;
+	}
+
+	if (tb[IFLA_TXQLEN])
+		dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
+
+	if (tb[IFLA_OPERSTATE])
+		set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
+
+	if (tb[IFLA_LINKMODE]) {
+		write_lock_bh(&dev_base_lock);
+		dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+		write_unlock_bh(&dev_base_lock);
+	}
+
+	err = 0;
+
+errout:
+	if (err < 0 && modified && net_ratelimit())
+		printk(KERN_WARNING "A link change request failed with "
+		       "some changes comitted already. Interface %s may "
+		       "have been left with an inconsistent configuration, "
+		       "please check.\n", dev->name);
+
+	if (send_addr_notify)
+		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+	return err;
+}
+
+static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ifinfomsg *ifm;
+	struct net_device *dev;
+	int err;
+	struct nlattr *tb[IFLA_MAX+1];
+	char ifname[IFNAMSIZ];
+
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		goto errout;
+
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+	else
+		ifname[0] = '\0';
+
+	err = -EINVAL;
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0)
+		dev = dev_get_by_index(net, ifm->ifi_index);
+	else if (tb[IFLA_IFNAME])
+		dev = dev_get_by_name(net, ifname);
+	else
+		goto errout;
+
+	if (dev == NULL) {
+		err = -ENODEV;
+		goto errout;
+	}
+
+	if ((err = validate_linkmsg(dev, tb)) < 0)
+		goto errout_dev;
+
+	err = do_setlink(dev, ifm, tb, ifname, 0);
+errout_dev:
+	dev_put(dev);
+errout:
+	return err;
+}
+
+static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	const struct rtnl_link_ops *ops;
+	struct net_device *dev;
+	struct ifinfomsg *ifm;
+	char ifname[IFNAMSIZ];
+	struct nlattr *tb[IFLA_MAX+1];
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		return err;
+
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0)
+		dev = __dev_get_by_index(net, ifm->ifi_index);
+	else if (tb[IFLA_IFNAME])
+		dev = __dev_get_by_name(net, ifname);
+	else
+		return -EINVAL;
+
+	if (!dev)
+		return -ENODEV;
+
+	ops = dev->rtnl_link_ops;
+	if (!ops)
+		return -EOPNOTSUPP;
+
+	ops->dellink(dev);
+	return 0;
+}
+
+struct net_device *rtnl_create_link(struct net *net, char *ifname,
+		const struct rtnl_link_ops *ops, struct nlattr *tb[])
+{
+	int err;
+	struct net_device *dev;
+
+	err = -ENOMEM;
+	dev = alloc_netdev(ops->priv_size, ifname, ops->setup);
+	if (!dev)
+		goto err;
+
+	if (strchr(dev->name, '%')) {
+		err = dev_alloc_name(dev, dev->name);
+		if (err < 0)
+			goto err_free;
+	}
+
+	dev_net_set(dev, net);
+	dev->rtnl_link_ops = ops;
+
+	if (tb[IFLA_MTU])
+		dev->mtu = nla_get_u32(tb[IFLA_MTU]);
+	if (tb[IFLA_ADDRESS])
+		memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
+				nla_len(tb[IFLA_ADDRESS]));
+	if (tb[IFLA_BROADCAST])
+		memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
+				nla_len(tb[IFLA_BROADCAST]));
+	if (tb[IFLA_TXQLEN])
+		dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
+	if (tb[IFLA_OPERSTATE])
+		set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
+	if (tb[IFLA_LINKMODE])
+		dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+
+	return dev;
+
+err_free:
+	free_netdev(dev);
+err:
+	return ERR_PTR(err);
+}
+
+static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	const struct rtnl_link_ops *ops;
+	struct net_device *dev;
+	struct ifinfomsg *ifm;
+	char kind[MODULE_NAME_LEN];
+	char ifname[IFNAMSIZ];
+	struct nlattr *tb[IFLA_MAX+1];
+	struct nlattr *linkinfo[IFLA_INFO_MAX+1];
+	int err;
+
+#ifdef CONFIG_MODULES
+replay:
+#endif
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		return err;
+
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+	else
+		ifname[0] = '\0';
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0)
+		dev = __dev_get_by_index(net, ifm->ifi_index);
+	else if (ifname[0])
+		dev = __dev_get_by_name(net, ifname);
+	else
+		dev = NULL;
+
+	if ((err = validate_linkmsg(dev, tb)) < 0)
+		return err;
+
+	if (tb[IFLA_LINKINFO]) {
+		err = nla_parse_nested(linkinfo, IFLA_INFO_MAX,
+				       tb[IFLA_LINKINFO], ifla_info_policy);
+		if (err < 0)
+			return err;
+	} else
+		memset(linkinfo, 0, sizeof(linkinfo));
+
+	if (linkinfo[IFLA_INFO_KIND]) {
+		nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
+		ops = rtnl_link_ops_get(kind);
+	} else {
+		kind[0] = '\0';
+		ops = NULL;
+	}
+
+	if (1) {
+		struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL;
+
+		if (ops) {
+			if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
+				err = nla_parse_nested(attr, ops->maxtype,
+						       linkinfo[IFLA_INFO_DATA],
+						       ops->policy);
+				if (err < 0)
+					return err;
+				data = attr;
+			}
+			if (ops->validate) {
+				err = ops->validate(tb, data);
+				if (err < 0)
+					return err;
+			}
+		}
+
+		if (dev) {
+			int modified = 0;
+
+			if (nlh->nlmsg_flags & NLM_F_EXCL)
+				return -EEXIST;
+			if (nlh->nlmsg_flags & NLM_F_REPLACE)
+				return -EOPNOTSUPP;
+
+			if (linkinfo[IFLA_INFO_DATA]) {
+				if (!ops || ops != dev->rtnl_link_ops ||
+				    !ops->changelink)
+					return -EOPNOTSUPP;
+
+				err = ops->changelink(dev, tb, data);
+				if (err < 0)
+					return err;
+				modified = 1;
+			}
+
+			return do_setlink(dev, ifm, tb, ifname, modified);
+		}
+
+		if (!(nlh->nlmsg_flags & NLM_F_CREATE))
+			return -ENODEV;
+
+		if (ifm->ifi_index || ifm->ifi_flags || ifm->ifi_change)
+			return -EOPNOTSUPP;
+		if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
+			return -EOPNOTSUPP;
+
+		if (!ops) {
+#ifdef CONFIG_MODULES
+			if (kind[0]) {
+				__rtnl_unlock();
+				request_module("rtnl-link-%s", kind);
+				rtnl_lock();
+				ops = rtnl_link_ops_get(kind);
+				if (ops)
+					goto replay;
+			}
+#endif
+			return -EOPNOTSUPP;
+		}
+
+		if (!ifname[0])
+			snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
+
+		dev = rtnl_create_link(net, ifname, ops, tb);
+
+		if (IS_ERR(dev))
+			err = PTR_ERR(dev);
+		else if (ops->newlink)
+			err = ops->newlink(dev, tb, data);
+		else
+			err = register_netdevice(dev);
+
+		if (err < 0 && !IS_ERR(dev))
+			free_netdev(dev);
+		return err;
+	}
+}
+
+static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
+{
+	struct net *net = sock_net(skb->sk);
+	struct ifinfomsg *ifm;
+	struct nlattr *tb[IFLA_MAX+1];
+	struct net_device *dev = NULL;
+	struct sk_buff *nskb;
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+	if (err < 0)
+		return err;
+
+	ifm = nlmsg_data(nlh);
+	if (ifm->ifi_index > 0) {
+		dev = dev_get_by_index(net, ifm->ifi_index);
+		if (dev == NULL)
+			return -ENODEV;
+	} else
+		return -EINVAL;
+
+	nskb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
+	if (nskb == NULL) {
+		err = -ENOBUFS;
+		goto errout;
+	}
+
+	err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).pid,
+			       nlh->nlmsg_seq, 0, 0);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in if_nlmsg_size */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(nskb);
+		goto errout;
+	}
+	err = rtnl_unicast(nskb, net, NETLINK_CB(skb).pid);
+errout:
+	dev_put(dev);
+
+	return err;
+}
+
+static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	int idx;
+	int s_idx = cb->family;
+
+	if (s_idx == 0)
+		s_idx = 1;
+	for (idx=1; idx<NPROTO; idx++) {
+		int type = cb->nlh->nlmsg_type-RTM_BASE;
+		if (idx < s_idx || idx == PF_PACKET)
+			continue;
+		if (rtnl_msg_handlers[idx] == NULL ||
+		    rtnl_msg_handlers[idx][type].dumpit == NULL)
+			continue;
+		if (idx > s_idx)
+			memset(&cb->args[0], 0, sizeof(cb->args));
+		if (rtnl_msg_handlers[idx][type].dumpit(skb, cb))
+			break;
+	}
+	cb->family = idx;
+
+	return skb->len;
+}
+
+void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
+{
+	struct net *net = dev_net(dev);
+	struct sk_buff *skb;
+	int err = -ENOBUFS;
+
+	skb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
+	if (skb == NULL)
+		goto errout;
+
+	err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0);
+	if (err < 0) {
+		/* -EMSGSIZE implies BUG in if_nlmsg_size() */
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(skb);
+		goto errout;
+	}
+	err = rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
+errout:
+	if (err < 0)
+		rtnl_set_sk_err(net, RTNLGRP_LINK, err);
+}
+
+/* Protected by RTNL sempahore.  */
+static struct rtattr **rta_buf;
+static int rtattr_max;
+
+/* Process one rtnetlink message. */
+
+static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
+{
+	struct net *net = sock_net(skb->sk);
+	rtnl_doit_func doit;
+	int sz_idx, kind;
+	int min_len;
+	int family;
+	int type;
+	int err;
+
+	type = nlh->nlmsg_type;
+	if (type > RTM_MAX)
+		return -EOPNOTSUPP;
+
+	type -= RTM_BASE;
+
+	/* All the messages must have at least 1 byte length */
+	if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
+		return 0;
+
+	family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family;
+	if (family >= NPROTO)
+		return -EAFNOSUPPORT;
+
+	sz_idx = type>>2;
+	kind = type&3;
+
+	if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
+		struct sock *rtnl;
+		rtnl_dumpit_func dumpit;
+
+		dumpit = rtnl_get_dumpit(family, type);
+		if (dumpit == NULL)
+			return -EOPNOTSUPP;
+
+		__rtnl_unlock();
+		rtnl = net->rtnl;
+		err = netlink_dump_start(rtnl, skb, nlh, dumpit, NULL);
+		rtnl_lock();
+		return err;
+	}
+
+	memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
+
+	min_len = rtm_min[sz_idx];
+	if (nlh->nlmsg_len < min_len)
+		return -EINVAL;
+
+	if (nlh->nlmsg_len > min_len) {
+		int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
+		struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len);
+
+		while (RTA_OK(attr, attrlen)) {
+			unsigned flavor = attr->rta_type;
+			if (flavor) {
+				if (flavor > rta_max[sz_idx])
+					return -EINVAL;
+				rta_buf[flavor-1] = attr;
+			}
+			attr = RTA_NEXT(attr, attrlen);
+		}
+	}
+
+	doit = rtnl_get_doit(family, type);
+	if (doit == NULL)
+		return -EOPNOTSUPP;
+
+	return doit(skb, nlh, (void *)&rta_buf[0]);
+}
+
+static void rtnetlink_rcv(struct sk_buff *skb)
+{
+	rtnl_lock();
+	netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
+	rtnl_unlock();
+}
+
+static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+	struct net_device *dev = ptr;
+
+	switch (event) {
+	case NETDEV_UNREGISTER:
+		rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
+		break;
+	case NETDEV_REGISTER:
+		rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
+		break;
+	case NETDEV_UP:
+	case NETDEV_DOWN:
+		rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
+		break;
+	case NETDEV_CHANGE:
+	case NETDEV_GOING_DOWN:
+		break;
+	default:
+		rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
+		break;
+	}
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block rtnetlink_dev_notifier = {
+	.notifier_call	= rtnetlink_event,
+};
+
+
+static int rtnetlink_net_init(struct net *net)
+{
+	struct sock *sk;
+	sk = netlink_kernel_create(net, NETLINK_ROUTE, RTNLGRP_MAX,
+				   rtnetlink_rcv, &rtnl_mutex, THIS_MODULE);
+	if (!sk)
+		return -ENOMEM;
+	net->rtnl = sk;
+	return 0;
+}
+
+static void rtnetlink_net_exit(struct net *net)
+{
+	netlink_kernel_release(net->rtnl);
+	net->rtnl = NULL;
+}
+
+static struct pernet_operations rtnetlink_net_ops = {
+	.init = rtnetlink_net_init,
+	.exit = rtnetlink_net_exit,
+};
+
+void __init rtnetlink_init(void)
+{
+	int i;
+
+	rtattr_max = 0;
+	for (i = 0; i < ARRAY_SIZE(rta_max); i++)
+		if (rta_max[i] > rtattr_max)
+			rtattr_max = rta_max[i];
+	rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL);
+	if (!rta_buf)
+		panic("rtnetlink_init: cannot allocate rta_buf\n");
+
+	if (register_pernet_subsys(&rtnetlink_net_ops))
+		panic("rtnetlink_init: cannot initialize rtnetlink\n");
+
+	netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);
+	register_netdevice_notifier(&rtnetlink_dev_notifier);
+
+	rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, rtnl_dump_ifinfo);
+	rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL);
+	rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL);
+	rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL);
+
+	rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all);
+	rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all);
+}
+
+EXPORT_SYMBOL(__rta_fill);
+EXPORT_SYMBOL(rtnetlink_put_metrics);
+EXPORT_SYMBOL(rtnl_lock);
+EXPORT_SYMBOL(rtnl_trylock);
+EXPORT_SYMBOL(rtnl_unlock);
+EXPORT_SYMBOL(rtnl_is_locked);
+EXPORT_SYMBOL(rtnl_unicast);
+EXPORT_SYMBOL(rtnl_notify);
+EXPORT_SYMBOL(rtnl_set_sk_err);
+EXPORT_SYMBOL(rtnl_create_link);
+EXPORT_SYMBOL(ifla_policy);
diff --git a/libdde_linux26/contrib/net/core/skb_dma_map.c b/libdde_linux26/contrib/net/core/skb_dma_map.c
new file mode 100644
index 00000000..86234923
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/skb_dma_map.c
@@ -0,0 +1,66 @@
+/* skb_dma_map.c: DMA mapping helpers for socket buffers.
+ *
+ * Copyright (C) David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/skbuff.h>
+
+int skb_dma_map(struct device *dev, struct sk_buff *skb,
+		enum dma_data_direction dir)
+{
+	struct skb_shared_info *sp = skb_shinfo(skb);
+	dma_addr_t map;
+	int i;
+
+	map = dma_map_single(dev, skb->data,
+			     skb_headlen(skb), dir);
+	if (dma_mapping_error(dev, map))
+		goto out_err;
+
+	sp->dma_maps[0] = map;
+	for (i = 0; i < sp->nr_frags; i++) {
+		skb_frag_t *fp = &sp->frags[i];
+
+		map = dma_map_page(dev, fp->page, fp->page_offset,
+				   fp->size, dir);
+		if (dma_mapping_error(dev, map))
+			goto unwind;
+		sp->dma_maps[i + 1] = map;
+	}
+	sp->num_dma_maps = i + 1;
+
+	return 0;
+
+unwind:
+	while (--i >= 0) {
+		skb_frag_t *fp = &sp->frags[i];
+
+		dma_unmap_page(dev, sp->dma_maps[i + 1],
+			       fp->size, dir);
+	}
+	dma_unmap_single(dev, sp->dma_maps[0],
+			 skb_headlen(skb), dir);
+out_err:
+	return -ENOMEM;
+}
+EXPORT_SYMBOL(skb_dma_map);
+
+void skb_dma_unmap(struct device *dev, struct sk_buff *skb,
+		   enum dma_data_direction dir)
+{
+	struct skb_shared_info *sp = skb_shinfo(skb);
+	int i;
+
+	dma_unmap_single(dev, sp->dma_maps[0],
+			 skb_headlen(skb), dir);
+	for (i = 0; i < sp->nr_frags; i++) {
+		skb_frag_t *fp = &sp->frags[i];
+
+		dma_unmap_page(dev, sp->dma_maps[i + 1],
+			       fp->size, dir);
+	}
+}
+EXPORT_SYMBOL(skb_dma_unmap);
diff --git a/libdde_linux26/contrib/net/core/sock.c b/libdde_linux26/contrib/net/core/sock.c
new file mode 100644
index 00000000..5f97caa1
--- /dev/null
+++ b/libdde_linux26/contrib/net/core/sock.c
@@ -0,0 +1,2297 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Generic socket support routines. Memory allocators, socket lock/release
+ *		handler for protocols to use and generic option handler.
+ *
+ *
+ * Authors:	Ross Biro
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *		Florian La Roche, <flla@stud.uni-sb.de>
+ *		Alan Cox, <A.Cox@swansea.ac.uk>
+ *
+ * Fixes:
+ *		Alan Cox	: 	Numerous verify_area() problems
+ *		Alan Cox	:	Connecting on a connecting socket
+ *					now returns an error for tcp.
+ *		Alan Cox	:	sock->protocol is set correctly.
+ *					and is not sometimes left as 0.
+ *		Alan Cox	:	connect handles icmp errors on a
+ *					connect properly. Unfortunately there
+ *					is a restart syscall nasty there. I
+ *					can't match BSD without hacking the C
+ *					library. Ideas urgently sought!
+ *		Alan Cox	:	Disallow bind() to addresses that are
+ *					not ours - especially broadcast ones!!
+ *		Alan Cox	:	Socket 1024 _IS_ ok for users. (fencepost)
+ *		Alan Cox	:	sock_wfree/sock_rfree don't destroy sockets,
+ *					instead they leave that for the DESTROY timer.
+ *		Alan Cox	:	Clean up error flag in accept
+ *		Alan Cox	:	TCP ack handling is buggy, the DESTROY timer
+ *					was buggy. Put a remove_sock() in the handler
+ *					for memory when we hit 0. Also altered the timer
+ *					code. The ACK stuff can wait and needs major
+ *					TCP layer surgery.
+ *		Alan Cox	:	Fixed TCP ack bug, removed remove sock
+ *					and fixed timer/inet_bh race.
+ *		Alan Cox	:	Added zapped flag for TCP
+ *		Alan Cox	:	Move kfree_skb into skbuff.c and tidied up surplus code
+ *		Alan Cox	:	for new sk_buff allocations wmalloc/rmalloc now call alloc_skb
+ *		Alan Cox	:	kfree_s calls now are kfree_skbmem so we can track skb resources
+ *		Alan Cox	:	Supports socket option broadcast now as does udp. Packet and raw need fixing.
+ *		Alan Cox	:	Added RCVBUF,SNDBUF size setting. It suddenly occurred to me how easy it was so...
+ *		Rick Sladkey	:	Relaxed UDP rules for matching packets.
+ *		C.E.Hawkins	:	IFF_PROMISC/SIOCGHWADDR support
+ *	Pauline Middelink	:	identd support
+ *		Alan Cox	:	Fixed connect() taking signals I think.
+ *		Alan Cox	:	SO_LINGER supported
+ *		Alan Cox	:	Error reporting fixes
+ *		Anonymous	:	inet_create tidied up (sk->reuse setting)
+ *		Alan Cox	:	inet sockets don't set sk->type!
+ *		Alan Cox	:	Split socket option code
+ *		Alan Cox	:	Callbacks
+ *		Alan Cox	:	Nagle flag for Charles & Johannes stuff
+ *		Alex		:	Removed restriction on inet fioctl
+ *		Alan Cox	:	Splitting INET from NET core
+ *		Alan Cox	:	Fixed bogus SO_TYPE handling in getsockopt()
+ *		Adam Caldwell	:	Missing return in SO_DONTROUTE/SO_DEBUG code
+ *		Alan Cox	:	Split IP from generic code
+ *		Alan Cox	:	New kfree_skbmem()
+ *		Alan Cox	:	Make SO_DEBUG superuser only.
+ *		Alan Cox	:	Allow anyone to clear SO_DEBUG
+ *					(compatibility fix)
+ *		Alan Cox	:	Added optimistic memory grabbing for AF_UNIX throughput.
+ *		Alan Cox	:	Allocator for a socket is settable.
+ *		Alan Cox	:	SO_ERROR includes soft errors.
+ *		Alan Cox	:	Allow NULL arguments on some SO_ opts
+ *		Alan Cox	: 	Generic socket allocation to make hooks
+ *					easier (suggested by Craig Metz).
+ *		Michael Pall	:	SO_ERROR returns positive errno again
+ *              Steve Whitehouse:       Added default destructor to free
+ *                                      protocol private data.
+ *              Steve Whitehouse:       Added various other default routines
+ *                                      common to several socket families.
+ *              Chris Evans     :       Call suser() check last on F_SETOWN
+ *		Jay Schulist	:	Added SO_ATTACH_FILTER and SO_DETACH_FILTER.
+ *		Andi Kleen	:	Add sock_kmalloc()/sock_kfree_s()
+ *		Andi Kleen	:	Fix write_space callback
+ *		Chris Evans	:	Security fixes - signedness again
+ *		Arnaldo C. Melo :       cleanups, use skb_queue_purge
+ *
+ * To Fix:
+ *
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/poll.h>
+#include <linux/tcp.h>
+#include <linux/init.h>
+#include <linux/highmem.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/netdevice.h>
+#include <net/protocol.h>
+#include <linux/skbuff.h>
+#include <net/net_namespace.h>
+#include <net/request_sock.h>
+#include <net/sock.h>
+#include <net/xfrm.h>
+#include <linux/ipsec.h>
+
+#include <linux/filter.h>
+
+#ifdef CONFIG_INET
+#include <net/tcp.h>
+#endif
+
+/*
+ * Each address family might have different locking rules, so we have
+ * one slock key per address family:
+ */
+static struct lock_class_key af_family_keys[AF_MAX];
+static struct lock_class_key af_family_slock_keys[AF_MAX];
+
+/*
+ * Make lock validator output more readable. (we pre-construct these
+ * strings build-time, so that runtime initialization of socket
+ * locks is fast):
+ */
+static const char *af_family_key_strings[AF_MAX+1] = {
+  "sk_lock-AF_UNSPEC", "sk_lock-AF_UNIX"     , "sk_lock-AF_INET"     ,
+  "sk_lock-AF_AX25"  , "sk_lock-AF_IPX"      , "sk_lock-AF_APPLETALK",
+  "sk_lock-AF_NETROM", "sk_lock-AF_BRIDGE"   , "sk_lock-AF_ATMPVC"   ,
+  "sk_lock-AF_X25"   , "sk_lock-AF_INET6"    , "sk_lock-AF_ROSE"     ,
+  "sk_lock-AF_DECnet", "sk_lock-AF_NETBEUI"  , "sk_lock-AF_SECURITY" ,
+  "sk_lock-AF_KEY"   , "sk_lock-AF_NETLINK"  , "sk_lock-AF_PACKET"   ,
+  "sk_lock-AF_ASH"   , "sk_lock-AF_ECONET"   , "sk_lock-AF_ATMSVC"   ,
+  "sk_lock-21"       , "sk_lock-AF_SNA"      , "sk_lock-AF_IRDA"     ,
+  "sk_lock-AF_PPPOX" , "sk_lock-AF_WANPIPE"  , "sk_lock-AF_LLC"      ,
+  "sk_lock-27"       , "sk_lock-28"          , "sk_lock-AF_CAN"      ,
+  "sk_lock-AF_TIPC"  , "sk_lock-AF_BLUETOOTH", "sk_lock-IUCV"        ,
+  "sk_lock-AF_RXRPC" , "sk_lock-AF_ISDN"     , "sk_lock-AF_PHONET"   ,
+  "sk_lock-AF_MAX"
+};
+static const char *af_family_slock_key_strings[AF_MAX+1] = {
+  "slock-AF_UNSPEC", "slock-AF_UNIX"     , "slock-AF_INET"     ,
+  "slock-AF_AX25"  , "slock-AF_IPX"      , "slock-AF_APPLETALK",
+  "slock-AF_NETROM", "slock-AF_BRIDGE"   , "slock-AF_ATMPVC"   ,
+  "slock-AF_X25"   , "slock-AF_INET6"    , "slock-AF_ROSE"     ,
+  "slock-AF_DECnet", "slock-AF_NETBEUI"  , "slock-AF_SECURITY" ,
+  "slock-AF_KEY"   , "slock-AF_NETLINK"  , "slock-AF_PACKET"   ,
+  "slock-AF_ASH"   , "slock-AF_ECONET"   , "slock-AF_ATMSVC"   ,
+  "slock-21"       , "slock-AF_SNA"      , "slock-AF_IRDA"     ,
+  "slock-AF_PPPOX" , "slock-AF_WANPIPE"  , "slock-AF_LLC"      ,
+  "slock-27"       , "slock-28"          , "slock-AF_CAN"      ,
+  "slock-AF_TIPC"  , "slock-AF_BLUETOOTH", "slock-AF_IUCV"     ,
+  "slock-AF_RXRPC" , "slock-AF_ISDN"     , "slock-AF_PHONET"   ,
+  "slock-AF_MAX"
+};
+static const char *af_family_clock_key_strings[AF_MAX+1] = {
+  "clock-AF_UNSPEC", "clock-AF_UNIX"     , "clock-AF_INET"     ,
+  "clock-AF_AX25"  , "clock-AF_IPX"      , "clock-AF_APPLETALK",
+  "clock-AF_NETROM", "clock-AF_BRIDGE"   , "clock-AF_ATMPVC"   ,
+  "clock-AF_X25"   , "clock-AF_INET6"    , "clock-AF_ROSE"     ,
+  "clock-AF_DECnet", "clock-AF_NETBEUI"  , "clock-AF_SECURITY" ,
+  "clock-AF_KEY"   , "clock-AF_NETLINK"  , "clock-AF_PACKET"   ,
+  "clock-AF_ASH"   , "clock-AF_ECONET"   , "clock-AF_ATMSVC"   ,
+  "clock-21"       , "clock-AF_SNA"      , "clock-AF_IRDA"     ,
+  "clock-AF_PPPOX" , "clock-AF_WANPIPE"  , "clock-AF_LLC"      ,
+  "clock-27"       , "clock-28"          , "clock-AF_CAN"      ,
+  "clock-AF_TIPC"  , "clock-AF_BLUETOOTH", "clock-AF_IUCV"     ,
+  "clock-AF_RXRPC" , "clock-AF_ISDN"     , "clock-AF_PHONET"   ,
+  "clock-AF_MAX"
+};
+
+/*
+ * sk_callback_lock locking rules are per-address-family,
+ * so split the lock classes by using a per-AF key:
+ */
+static struct lock_class_key af_callback_keys[AF_MAX];
+
+/* Take into consideration the size of the struct sk_buff overhead in the
+ * determination of these values, since that is non-constant across
+ * platforms.  This makes socket queueing behavior and performance
+ * not depend upon such differences.
+ */
+#define _SK_MEM_PACKETS		256
+#define _SK_MEM_OVERHEAD	(sizeof(struct sk_buff) + 256)
+#define SK_WMEM_MAX		(_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
+#define SK_RMEM_MAX		(_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
+
+/* Run time adjustable parameters. */
+__u32 sysctl_wmem_max __read_mostly = SK_WMEM_MAX;
+__u32 sysctl_rmem_max __read_mostly = SK_RMEM_MAX;
+__u32 sysctl_wmem_default __read_mostly = SK_WMEM_MAX;
+__u32 sysctl_rmem_default __read_mostly = SK_RMEM_MAX;
+
+/* Maximal space eaten by iovec or ancilliary data plus some space */
+int sysctl_optmem_max __read_mostly = sizeof(unsigned long)*(2*UIO_MAXIOV+512);
+
+static int sock_set_timeout(long *timeo_p, char __user *optval, int optlen)
+{
+	struct timeval tv;
+
+	if (optlen < sizeof(tv))
+		return -EINVAL;
+	if (copy_from_user(&tv, optval, sizeof(tv)))
+		return -EFAULT;
+	if (tv.tv_usec < 0 || tv.tv_usec >= USEC_PER_SEC)
+		return -EDOM;
+
+	if (tv.tv_sec < 0) {
+		static int warned __read_mostly;
+
+		*timeo_p = 0;
+		if (warned < 10 && net_ratelimit()) {
+			warned++;
+			printk(KERN_INFO "sock_set_timeout: `%s' (pid %d) "
+			       "tries to set negative timeout\n",
+				current->comm, task_pid_nr(current));
+		}
+		return 0;
+	}
+	*timeo_p = MAX_SCHEDULE_TIMEOUT;
+	if (tv.tv_sec == 0 && tv.tv_usec == 0)
+		return 0;
+	if (tv.tv_sec < (MAX_SCHEDULE_TIMEOUT/HZ - 1))
+		*timeo_p = tv.tv_sec*HZ + (tv.tv_usec+(1000000/HZ-1))/(1000000/HZ);
+	return 0;
+}
+
+static void sock_warn_obsolete_bsdism(const char *name)
+{
+	static int warned;
+	static char warncomm[TASK_COMM_LEN];
+	if (strcmp(warncomm, current->comm) && warned < 5) {
+		strcpy(warncomm,  current->comm);
+		printk(KERN_WARNING "process `%s' is using obsolete "
+		       "%s SO_BSDCOMPAT\n", warncomm, name);
+		warned++;
+	}
+}
+
+static void sock_disable_timestamp(struct sock *sk)
+{
+	if (sock_flag(sk, SOCK_TIMESTAMP)) {
+		sock_reset_flag(sk, SOCK_TIMESTAMP);
+		net_disable_timestamp();
+	}
+}
+
+
+int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+{
+	int err = 0;
+	int skb_len;
+
+	/* Cast sk->rcvbuf to unsigned... It's pointless, but reduces
+	   number of warnings when compiling with -W --ANK
+	 */
+	if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
+	    (unsigned)sk->sk_rcvbuf) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = sk_filter(sk, skb);
+	if (err)
+		goto out;
+
+	if (!sk_rmem_schedule(sk, skb->truesize)) {
+		err = -ENOBUFS;
+		goto out;
+	}
+
+	skb->dev = NULL;
+	skb_set_owner_r(skb, sk);
+
+	/* Cache the SKB length before we tack it onto the receive
+	 * queue.  Once it is added it no longer belongs to us and
+	 * may be freed by other threads of control pulling packets
+	 * from the queue.
+	 */
+	skb_len = skb->len;
+
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+
+	if (!sock_flag(sk, SOCK_DEAD))
+		sk->sk_data_ready(sk, skb_len);
+out:
+	return err;
+}
+EXPORT_SYMBOL(sock_queue_rcv_skb);
+
+int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)
+{
+	int rc = NET_RX_SUCCESS;
+
+	if (sk_filter(sk, skb))
+		goto discard_and_relse;
+
+	skb->dev = NULL;
+
+	if (nested)
+		bh_lock_sock_nested(sk);
+	else
+		bh_lock_sock(sk);
+	if (!sock_owned_by_user(sk)) {
+		/*
+		 * trylock + unlock semantics:
+		 */
+		mutex_acquire(&sk->sk_lock.dep_map, 0, 1, _RET_IP_);
+
+		rc = sk_backlog_rcv(sk, skb);
+
+		mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
+	} else
+		sk_add_backlog(sk, skb);
+	bh_unlock_sock(sk);
+out:
+	sock_put(sk);
+	return rc;
+discard_and_relse:
+	kfree_skb(skb);
+	goto out;
+}
+EXPORT_SYMBOL(sk_receive_skb);
+
+struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie)
+{
+	struct dst_entry *dst = sk->sk_dst_cache;
+
+	if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
+		sk->sk_dst_cache = NULL;
+		dst_release(dst);
+		return NULL;
+	}
+
+	return dst;
+}
+EXPORT_SYMBOL(__sk_dst_check);
+
+struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie)
+{
+	struct dst_entry *dst = sk_dst_get(sk);
+
+	if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
+		sk_dst_reset(sk);
+		dst_release(dst);
+		return NULL;
+	}
+
+	return dst;
+}
+EXPORT_SYMBOL(sk_dst_check);
+
+static int sock_bindtodevice(struct sock *sk, char __user *optval, int optlen)
+{
+	int ret = -ENOPROTOOPT;
+#ifdef CONFIG_NETDEVICES
+	struct net *net = sock_net(sk);
+	char devname[IFNAMSIZ];
+	int index;
+
+	/* Sorry... */
+	ret = -EPERM;
+	if (!capable(CAP_NET_RAW))
+		goto out;
+
+	ret = -EINVAL;
+	if (optlen < 0)
+		goto out;
+
+	/* Bind this socket to a particular device like "eth0",
+	 * as specified in the passed interface name. If the
+	 * name is "" or the option length is zero the socket
+	 * is not bound.
+	 */
+	if (optlen > IFNAMSIZ - 1)
+		optlen = IFNAMSIZ - 1;
+	memset(devname, 0, sizeof(devname));
+
+	ret = -EFAULT;
+	if (copy_from_user(devname, optval, optlen))
+		goto out;
+
+	if (devname[0] == '\0') {
+		index = 0;
+	} else {
+		struct net_device *dev = dev_get_by_name(net, devname);
+
+		ret = -ENODEV;
+		if (!dev)
+			goto out;
+
+		index = dev->ifindex;
+		dev_put(dev);
+	}
+
+	lock_sock(sk);
+	sk->sk_bound_dev_if = index;
+	sk_dst_reset(sk);
+	release_sock(sk);
+
+	ret = 0;
+
+out:
+#endif
+
+	return ret;
+}
+
+static inline void sock_valbool_flag(struct sock *sk, int bit, int valbool)
+{
+	if (valbool)
+		sock_set_flag(sk, bit);
+	else
+		sock_reset_flag(sk, bit);
+}
+
+/*
+ *	This is meant for all protocols to use and covers goings on
+ *	at the socket level. Everything here is generic.
+ */
+
+int sock_setsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	struct sock *sk=sock->sk;
+	int val;
+	int valbool;
+	struct linger ling;
+	int ret = 0;
+
+	/*
+	 *	Options without arguments
+	 */
+
+	if (optname == SO_BINDTODEVICE)
+		return sock_bindtodevice(sk, optval, optlen);
+
+	if (optlen < sizeof(int))
+		return -EINVAL;
+
+	if (get_user(val, (int __user *)optval))
+		return -EFAULT;
+
+	valbool = val?1:0;
+
+	lock_sock(sk);
+
+	switch(optname) {
+	case SO_DEBUG:
+		if (val && !capable(CAP_NET_ADMIN)) {
+			ret = -EACCES;
+		} else
+			sock_valbool_flag(sk, SOCK_DBG, valbool);
+		break;
+	case SO_REUSEADDR:
+		sk->sk_reuse = valbool;
+		break;
+	case SO_TYPE:
+	case SO_ERROR:
+		ret = -ENOPROTOOPT;
+		break;
+	case SO_DONTROUTE:
+		sock_valbool_flag(sk, SOCK_LOCALROUTE, valbool);
+		break;
+	case SO_BROADCAST:
+		sock_valbool_flag(sk, SOCK_BROADCAST, valbool);
+		break;
+	case SO_SNDBUF:
+		/* Don't error on this BSD doesn't and if you think
+		   about it this is right. Otherwise apps have to
+		   play 'guess the biggest size' games. RCVBUF/SNDBUF
+		   are treated in BSD as hints */
+
+		if (val > sysctl_wmem_max)
+			val = sysctl_wmem_max;
+set_sndbuf:
+		sk->sk_userlocks |= SOCK_SNDBUF_LOCK;
+		if ((val * 2) < SOCK_MIN_SNDBUF)
+			sk->sk_sndbuf = SOCK_MIN_SNDBUF;
+		else
+			sk->sk_sndbuf = val * 2;
+
+		/*
+		 *	Wake up sending tasks if we
+		 *	upped the value.
+		 */
+		sk->sk_write_space(sk);
+		break;
+
+	case SO_SNDBUFFORCE:
+		if (!capable(CAP_NET_ADMIN)) {
+			ret = -EPERM;
+			break;
+		}
+		goto set_sndbuf;
+
+	case SO_RCVBUF:
+		/* Don't error on this BSD doesn't and if you think
+		   about it this is right. Otherwise apps have to
+		   play 'guess the biggest size' games. RCVBUF/SNDBUF
+		   are treated in BSD as hints */
+
+		if (val > sysctl_rmem_max)
+			val = sysctl_rmem_max;
+set_rcvbuf:
+		sk->sk_userlocks |= SOCK_RCVBUF_LOCK;
+		/*
+		 * We double it on the way in to account for
+		 * "struct sk_buff" etc. overhead.   Applications
+		 * assume that the SO_RCVBUF setting they make will
+		 * allow that much actual data to be received on that
+		 * socket.
+		 *
+		 * Applications are unaware that "struct sk_buff" and
+		 * other overheads allocate from the receive buffer
+		 * during socket buffer allocation.
+		 *
+		 * And after considering the possible alternatives,
+		 * returning the value we actually used in getsockopt
+		 * is the most desirable behavior.
+		 */
+		if ((val * 2) < SOCK_MIN_RCVBUF)
+			sk->sk_rcvbuf = SOCK_MIN_RCVBUF;
+		else
+			sk->sk_rcvbuf = val * 2;
+		break;
+
+	case SO_RCVBUFFORCE:
+		if (!capable(CAP_NET_ADMIN)) {
+			ret = -EPERM;
+			break;
+		}
+		goto set_rcvbuf;
+
+	case SO_KEEPALIVE:
+#ifdef CONFIG_INET
+		if (sk->sk_protocol == IPPROTO_TCP)
+			tcp_set_keepalive(sk, valbool);
+#endif
+		sock_valbool_flag(sk, SOCK_KEEPOPEN, valbool);
+		break;
+
+	case SO_OOBINLINE:
+		sock_valbool_flag(sk, SOCK_URGINLINE, valbool);
+		break;
+
+	case SO_NO_CHECK:
+		sk->sk_no_check = valbool;
+		break;
+
+	case SO_PRIORITY:
+		if ((val >= 0 && val <= 6) || capable(CAP_NET_ADMIN))
+			sk->sk_priority = val;
+		else
+			ret = -EPERM;
+		break;
+
+	case SO_LINGER:
+		if (optlen < sizeof(ling)) {
+			ret = -EINVAL;	/* 1003.1g */
+			break;
+		}
+		if (copy_from_user(&ling,optval,sizeof(ling))) {
+			ret = -EFAULT;
+			break;
+		}
+		if (!ling.l_onoff)
+			sock_reset_flag(sk, SOCK_LINGER);
+		else {
+#if (BITS_PER_LONG == 32)
+			if ((unsigned int)ling.l_linger >= MAX_SCHEDULE_TIMEOUT/HZ)
+				sk->sk_lingertime = MAX_SCHEDULE_TIMEOUT;
+			else
+#endif
+				sk->sk_lingertime = (unsigned int)ling.l_linger * HZ;
+			sock_set_flag(sk, SOCK_LINGER);
+		}
+		break;
+
+	case SO_BSDCOMPAT:
+		sock_warn_obsolete_bsdism("setsockopt");
+		break;
+
+	case SO_PASSCRED:
+		if (valbool)
+			set_bit(SOCK_PASSCRED, &sock->flags);
+		else
+			clear_bit(SOCK_PASSCRED, &sock->flags);
+		break;
+
+	case SO_TIMESTAMP:
+	case SO_TIMESTAMPNS:
+		if (valbool)  {
+			if (optname == SO_TIMESTAMP)
+				sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+			else
+				sock_set_flag(sk, SOCK_RCVTSTAMPNS);
+			sock_set_flag(sk, SOCK_RCVTSTAMP);
+			sock_enable_timestamp(sk);
+		} else {
+			sock_reset_flag(sk, SOCK_RCVTSTAMP);
+			sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+		}
+		break;
+
+	case SO_RCVLOWAT:
+		if (val < 0)
+			val = INT_MAX;
+		sk->sk_rcvlowat = val ? : 1;
+		break;
+
+	case SO_RCVTIMEO:
+		ret = sock_set_timeout(&sk->sk_rcvtimeo, optval, optlen);
+		break;
+
+	case SO_SNDTIMEO:
+		ret = sock_set_timeout(&sk->sk_sndtimeo, optval, optlen);
+		break;
+
+	case SO_ATTACH_FILTER:
+		ret = -EINVAL;
+		if (optlen == sizeof(struct sock_fprog)) {
+			struct sock_fprog fprog;
+
+			ret = -EFAULT;
+			if (copy_from_user(&fprog, optval, sizeof(fprog)))
+				break;
+
+			ret = sk_attach_filter(&fprog, sk);
+		}
+		break;
+
+	case SO_DETACH_FILTER:
+		ret = sk_detach_filter(sk);
+		break;
+
+	case SO_PASSSEC:
+		if (valbool)
+			set_bit(SOCK_PASSSEC, &sock->flags);
+		else
+			clear_bit(SOCK_PASSSEC, &sock->flags);
+		break;
+	case SO_MARK:
+		if (!capable(CAP_NET_ADMIN))
+			ret = -EPERM;
+		else {
+			sk->sk_mark = val;
+		}
+		break;
+
+		/* We implement the SO_SNDLOWAT etc to
+		   not be settable (1003.1g 5.3) */
+	default:
+		ret = -ENOPROTOOPT;
+		break;
+	}
+	release_sock(sk);
+	return ret;
+}
+
+
+int sock_getsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	union {
+		int val;
+		struct linger ling;
+		struct timeval tm;
+	} v;
+
+	unsigned int lv = sizeof(int);
+	int len;
+
+	if (get_user(len, optlen))
+		return -EFAULT;
+	if (len < 0)
+		return -EINVAL;
+
+	memset(&v, 0, sizeof(v));
+
+	switch(optname) {
+	case SO_DEBUG:
+		v.val = sock_flag(sk, SOCK_DBG);
+		break;
+
+	case SO_DONTROUTE:
+		v.val = sock_flag(sk, SOCK_LOCALROUTE);
+		break;
+
+	case SO_BROADCAST:
+		v.val = !!sock_flag(sk, SOCK_BROADCAST);
+		break;
+
+	case SO_SNDBUF:
+		v.val = sk->sk_sndbuf;
+		break;
+
+	case SO_RCVBUF:
+		v.val = sk->sk_rcvbuf;
+		break;
+
+	case SO_REUSEADDR:
+		v.val = sk->sk_reuse;
+		break;
+
+	case SO_KEEPALIVE:
+		v.val = !!sock_flag(sk, SOCK_KEEPOPEN);
+		break;
+
+	case SO_TYPE:
+		v.val = sk->sk_type;
+		break;
+
+	case SO_ERROR:
+		v.val = -sock_error(sk);
+		if (v.val==0)
+			v.val = xchg(&sk->sk_err_soft, 0);
+		break;
+
+	case SO_OOBINLINE:
+		v.val = !!sock_flag(sk, SOCK_URGINLINE);
+		break;
+
+	case SO_NO_CHECK:
+		v.val = sk->sk_no_check;
+		break;
+
+	case SO_PRIORITY:
+		v.val = sk->sk_priority;
+		break;
+
+	case SO_LINGER:
+		lv		= sizeof(v.ling);
+		v.ling.l_onoff	= !!sock_flag(sk, SOCK_LINGER);
+		v.ling.l_linger	= sk->sk_lingertime / HZ;
+		break;
+
+	case SO_BSDCOMPAT:
+		sock_warn_obsolete_bsdism("getsockopt");
+		break;
+
+	case SO_TIMESTAMP:
+		v.val = sock_flag(sk, SOCK_RCVTSTAMP) &&
+				!sock_flag(sk, SOCK_RCVTSTAMPNS);
+		break;
+
+	case SO_TIMESTAMPNS:
+		v.val = sock_flag(sk, SOCK_RCVTSTAMPNS);
+		break;
+
+	case SO_RCVTIMEO:
+		lv=sizeof(struct timeval);
+		if (sk->sk_rcvtimeo == MAX_SCHEDULE_TIMEOUT) {
+			v.tm.tv_sec = 0;
+			v.tm.tv_usec = 0;
+		} else {
+			v.tm.tv_sec = sk->sk_rcvtimeo / HZ;
+			v.tm.tv_usec = ((sk->sk_rcvtimeo % HZ) * 1000000) / HZ;
+		}
+		break;
+
+	case SO_SNDTIMEO:
+		lv=sizeof(struct timeval);
+		if (sk->sk_sndtimeo == MAX_SCHEDULE_TIMEOUT) {
+			v.tm.tv_sec = 0;
+			v.tm.tv_usec = 0;
+		} else {
+			v.tm.tv_sec = sk->sk_sndtimeo / HZ;
+			v.tm.tv_usec = ((sk->sk_sndtimeo % HZ) * 1000000) / HZ;
+		}
+		break;
+
+	case SO_RCVLOWAT:
+		v.val = sk->sk_rcvlowat;
+		break;
+
+	case SO_SNDLOWAT:
+		v.val=1;
+		break;
+
+	case SO_PASSCRED:
+		v.val = test_bit(SOCK_PASSCRED, &sock->flags) ? 1 : 0;
+		break;
+
+	case SO_PEERCRED:
+		if (len > sizeof(sk->sk_peercred))
+			len = sizeof(sk->sk_peercred);
+		if (copy_to_user(optval, &sk->sk_peercred, len))
+			return -EFAULT;
+		goto lenout;
+
+	case SO_PEERNAME:
+	{
+		char address[128];
+
+		if (sock->ops->getname(sock, (struct sockaddr *)address, &lv, 2))
+			return -ENOTCONN;
+		if (lv < len)
+			return -EINVAL;
+		if (copy_to_user(optval, address, len))
+			return -EFAULT;
+		goto lenout;
+	}
+
+	/* Dubious BSD thing... Probably nobody even uses it, but
+	 * the UNIX standard wants it for whatever reason... -DaveM
+	 */
+	case SO_ACCEPTCONN:
+		v.val = sk->sk_state == TCP_LISTEN;
+		break;
+
+	case SO_PASSSEC:
+		v.val = test_bit(SOCK_PASSSEC, &sock->flags) ? 1 : 0;
+		break;
+
+	case SO_PEERSEC:
+		return security_socket_getpeersec_stream(sock, optval, optlen, len);
+
+	case SO_MARK:
+		v.val = sk->sk_mark;
+		break;
+
+	default:
+		return -ENOPROTOOPT;
+	}
+
+	if (len > lv)
+		len = lv;
+	if (copy_to_user(optval, &v, len))
+		return -EFAULT;
+lenout:
+	if (put_user(len, optlen))
+		return -EFAULT;
+	return 0;
+}
+
+/*
+ * Initialize an sk_lock.
+ *
+ * (We also register the sk_lock with the lock validator.)
+ */
+static inline void sock_lock_init(struct sock *sk)
+{
+	sock_lock_init_class_and_name(sk,
+			af_family_slock_key_strings[sk->sk_family],
+			af_family_slock_keys + sk->sk_family,
+			af_family_key_strings[sk->sk_family],
+			af_family_keys + sk->sk_family);
+}
+
+static void sock_copy(struct sock *nsk, const struct sock *osk)
+{
+#ifdef CONFIG_SECURITY_NETWORK
+	void *sptr = nsk->sk_security;
+#endif
+
+	memcpy(nsk, osk, osk->sk_prot->obj_size);
+#ifdef CONFIG_SECURITY_NETWORK
+	nsk->sk_security = sptr;
+	security_sk_clone(osk, nsk);
+#endif
+}
+
+static struct sock *sk_prot_alloc(struct proto *prot, gfp_t priority,
+		int family)
+{
+	struct sock *sk;
+	struct kmem_cache *slab;
+
+	slab = prot->slab;
+	if (slab != NULL)
+		sk = kmem_cache_alloc(slab, priority);
+	else
+		sk = kmalloc(prot->obj_size, priority);
+
+	if (sk != NULL) {
+		if (security_sk_alloc(sk, family, priority))
+			goto out_free;
+
+		if (!try_module_get(prot->owner))
+			goto out_free_sec;
+	}
+
+	return sk;
+
+out_free_sec:
+	security_sk_free(sk);
+out_free:
+	if (slab != NULL)
+		kmem_cache_free(slab, sk);
+	else
+		kfree(sk);
+	return NULL;
+}
+
+static void sk_prot_free(struct proto *prot, struct sock *sk)
+{
+	struct kmem_cache *slab;
+	struct module *owner;
+
+	owner = prot->owner;
+	slab = prot->slab;
+
+	security_sk_free(sk);
+	if (slab != NULL)
+		kmem_cache_free(slab, sk);
+	else
+		kfree(sk);
+	module_put(owner);
+}
+
+/**
+ *	sk_alloc - All socket objects are allocated here
+ *	@net: the applicable net namespace
+ *	@family: protocol family
+ *	@priority: for allocation (%GFP_KERNEL, %GFP_ATOMIC, etc)
+ *	@prot: struct proto associated with this new sock instance
+ */
+struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
+		      struct proto *prot)
+{
+	struct sock *sk;
+
+	sk = sk_prot_alloc(prot, priority | __GFP_ZERO, family);
+	if (sk) {
+		sk->sk_family = family;
+		/*
+		 * See comment in struct sock definition to understand
+		 * why we need sk_prot_creator -acme
+		 */
+		sk->sk_prot = sk->sk_prot_creator = prot;
+		sock_lock_init(sk);
+		sock_net_set(sk, get_net(net));
+	}
+
+	return sk;
+}
+
+void sk_free(struct sock *sk)
+{
+	struct sk_filter *filter;
+
+	if (sk->sk_destruct)
+		sk->sk_destruct(sk);
+
+	filter = rcu_dereference(sk->sk_filter);
+	if (filter) {
+		sk_filter_uncharge(sk, filter);
+		rcu_assign_pointer(sk->sk_filter, NULL);
+	}
+
+	sock_disable_timestamp(sk);
+
+	if (atomic_read(&sk->sk_omem_alloc))
+		printk(KERN_DEBUG "%s: optmem leakage (%d bytes) detected.\n",
+		       __func__, atomic_read(&sk->sk_omem_alloc));
+
+	put_net(sock_net(sk));
+	sk_prot_free(sk->sk_prot_creator, sk);
+}
+
+/*
+ * Last sock_put should drop referrence to sk->sk_net. It has already
+ * been dropped in sk_change_net. Taking referrence to stopping namespace
+ * is not an option.
+ * Take referrence to a socket to remove it from hash _alive_ and after that
+ * destroy it in the context of init_net.
+ */
+void sk_release_kernel(struct sock *sk)
+{
+	if (sk == NULL || sk->sk_socket == NULL)
+		return;
+
+	sock_hold(sk);
+	sock_release(sk->sk_socket);
+	release_net(sock_net(sk));
+	sock_net_set(sk, get_net(&init_net));
+	sock_put(sk);
+}
+EXPORT_SYMBOL(sk_release_kernel);
+
+struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
+{
+	struct sock *newsk;
+
+	newsk = sk_prot_alloc(sk->sk_prot, priority, sk->sk_family);
+	if (newsk != NULL) {
+		struct sk_filter *filter;
+
+		sock_copy(newsk, sk);
+
+		/* SANITY */
+		get_net(sock_net(newsk));
+		sk_node_init(&newsk->sk_node);
+		sock_lock_init(newsk);
+		bh_lock_sock(newsk);
+		newsk->sk_backlog.head	= newsk->sk_backlog.tail = NULL;
+
+		atomic_set(&newsk->sk_rmem_alloc, 0);
+		atomic_set(&newsk->sk_wmem_alloc, 0);
+		atomic_set(&newsk->sk_omem_alloc, 0);
+		skb_queue_head_init(&newsk->sk_receive_queue);
+		skb_queue_head_init(&newsk->sk_write_queue);
+#ifdef CONFIG_NET_DMA
+		skb_queue_head_init(&newsk->sk_async_wait_queue);
+#endif
+
+		rwlock_init(&newsk->sk_dst_lock);
+		rwlock_init(&newsk->sk_callback_lock);
+		lockdep_set_class_and_name(&newsk->sk_callback_lock,
+				af_callback_keys + newsk->sk_family,
+				af_family_clock_key_strings[newsk->sk_family]);
+
+		newsk->sk_dst_cache	= NULL;
+		newsk->sk_wmem_queued	= 0;
+		newsk->sk_forward_alloc = 0;
+		newsk->sk_send_head	= NULL;
+		newsk->sk_userlocks	= sk->sk_userlocks & ~SOCK_BINDPORT_LOCK;
+
+		sock_reset_flag(newsk, SOCK_DONE);
+		skb_queue_head_init(&newsk->sk_error_queue);
+
+		filter = newsk->sk_filter;
+		if (filter != NULL)
+			sk_filter_charge(newsk, filter);
+
+		if (unlikely(xfrm_sk_clone_policy(newsk))) {
+			/* It is still raw copy of parent, so invalidate
+			 * destructor and make plain sk_free() */
+			newsk->sk_destruct = NULL;
+			sk_free(newsk);
+			newsk = NULL;
+			goto out;
+		}
+
+		newsk->sk_err	   = 0;
+		newsk->sk_priority = 0;
+		atomic_set(&newsk->sk_refcnt, 2);
+
+		/*
+		 * Increment the counter in the same struct proto as the master
+		 * sock (sk_refcnt_debug_inc uses newsk->sk_prot->socks, that
+		 * is the same as sk->sk_prot->socks, as this field was copied
+		 * with memcpy).
+		 *
+		 * This _changes_ the previous behaviour, where
+		 * tcp_create_openreq_child always was incrementing the
+		 * equivalent to tcp_prot->socks (inet_sock_nr), so this have
+		 * to be taken into account in all callers. -acme
+		 */
+		sk_refcnt_debug_inc(newsk);
+		sk_set_socket(newsk, NULL);
+		newsk->sk_sleep	 = NULL;
+
+		if (newsk->sk_prot->sockets_allocated)
+			percpu_counter_inc(newsk->sk_prot->sockets_allocated);
+	}
+out:
+	return newsk;
+}
+
+EXPORT_SYMBOL_GPL(sk_clone);
+
+void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
+{
+	__sk_dst_set(sk, dst);
+	sk->sk_route_caps = dst->dev->features;
+	if (sk->sk_route_caps & NETIF_F_GSO)
+		sk->sk_route_caps |= NETIF_F_GSO_SOFTWARE;
+	if (sk_can_gso(sk)) {
+		if (dst->header_len) {
+			sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+		} else {
+			sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM;
+			sk->sk_gso_max_size = dst->dev->gso_max_size;
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(sk_setup_caps);
+
+void __init sk_init(void)
+{
+	if (num_physpages <= 4096) {
+		sysctl_wmem_max = 32767;
+		sysctl_rmem_max = 32767;
+		sysctl_wmem_default = 32767;
+		sysctl_rmem_default = 32767;
+	} else if (num_physpages >= 131072) {
+		sysctl_wmem_max = 131071;
+		sysctl_rmem_max = 131071;
+	}
+}
+
+/*
+ *	Simple resource managers for sockets.
+ */
+
+
+/*
+ * Write buffer destructor automatically called from kfree_skb.
+ */
+void sock_wfree(struct sk_buff *skb)
+{
+	struct sock *sk = skb->sk;
+
+	/* In case it might be waiting for more memory. */
+	atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
+	if (!sock_flag(sk, SOCK_USE_WRITE_QUEUE))
+		sk->sk_write_space(sk);
+	sock_put(sk);
+}
+
+/*
+ * Read buffer destructor automatically called from kfree_skb.
+ */
+void sock_rfree(struct sk_buff *skb)
+{
+	struct sock *sk = skb->sk;
+
+	atomic_sub(skb->truesize, &sk->sk_rmem_alloc);
+	sk_mem_uncharge(skb->sk, skb->truesize);
+}
+
+
+int sock_i_uid(struct sock *sk)
+{
+	int uid;
+
+	read_lock(&sk->sk_callback_lock);
+	uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : 0;
+	read_unlock(&sk->sk_callback_lock);
+	return uid;
+}
+
+unsigned long sock_i_ino(struct sock *sk)
+{
+	unsigned long ino;
+
+	read_lock(&sk->sk_callback_lock);
+	ino = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_ino : 0;
+	read_unlock(&sk->sk_callback_lock);
+	return ino;
+}
+
+/*
+ * Allocate a skb from the socket's send buffer.
+ */
+struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force,
+			     gfp_t priority)
+{
+	if (force || atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) {
+		struct sk_buff * skb = alloc_skb(size, priority);
+		if (skb) {
+			skb_set_owner_w(skb, sk);
+			return skb;
+		}
+	}
+	return NULL;
+}
+
+/*
+ * Allocate a skb from the socket's receive buffer.
+ */
+struct sk_buff *sock_rmalloc(struct sock *sk, unsigned long size, int force,
+			     gfp_t priority)
+{
+	if (force || atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf) {
+		struct sk_buff *skb = alloc_skb(size, priority);
+		if (skb) {
+			skb_set_owner_r(skb, sk);
+			return skb;
+		}
+	}
+	return NULL;
+}
+
+/*
+ * Allocate a memory block from the socket's option memory buffer.
+ */
+void *sock_kmalloc(struct sock *sk, int size, gfp_t priority)
+{
+	if ((unsigned)size <= sysctl_optmem_max &&
+	    atomic_read(&sk->sk_omem_alloc) + size < sysctl_optmem_max) {
+		void *mem;
+		/* First do the add, to avoid the race if kmalloc
+		 * might sleep.
+		 */
+		atomic_add(size, &sk->sk_omem_alloc);
+		mem = kmalloc(size, priority);
+		if (mem)
+			return mem;
+		atomic_sub(size, &sk->sk_omem_alloc);
+	}
+	return NULL;
+}
+
+/*
+ * Free an option memory block.
+ */
+void sock_kfree_s(struct sock *sk, void *mem, int size)
+{
+	kfree(mem);
+	atomic_sub(size, &sk->sk_omem_alloc);
+}
+
+/* It is almost wait_for_tcp_memory minus release_sock/lock_sock.
+   I think, these locks should be removed for datagram sockets.
+ */
+static long sock_wait_for_wmem(struct sock * sk, long timeo)
+{
+	DEFINE_WAIT(wait);
+
+	clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+	for (;;) {
+		if (!timeo)
+			break;
+		if (signal_pending(current))
+			break;
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		if (atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf)
+			break;
+		if (sk->sk_shutdown & SEND_SHUTDOWN)
+			break;
+		if (sk->sk_err)
+			break;
+		timeo = schedule_timeout(timeo);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	return timeo;
+}
+
+
+/*
+ *	Generic send/receive buffer handlers
+ */
+
+static struct sk_buff *sock_alloc_send_pskb(struct sock *sk,
+					    unsigned long header_len,
+					    unsigned long data_len,
+					    int noblock, int *errcode)
+{
+	struct sk_buff *skb;
+	gfp_t gfp_mask;
+	long timeo;
+	int err;
+
+	gfp_mask = sk->sk_allocation;
+	if (gfp_mask & __GFP_WAIT)
+		gfp_mask |= __GFP_REPEAT;
+
+	timeo = sock_sndtimeo(sk, noblock);
+	while (1) {
+		err = sock_error(sk);
+		if (err != 0)
+			goto failure;
+
+		err = -EPIPE;
+		if (sk->sk_shutdown & SEND_SHUTDOWN)
+			goto failure;
+
+		if (atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) {
+			skb = alloc_skb(header_len, gfp_mask);
+			if (skb) {
+				int npages;
+				int i;
+
+				/* No pages, we're done... */
+				if (!data_len)
+					break;
+
+				npages = (data_len + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
+				skb->truesize += data_len;
+				skb_shinfo(skb)->nr_frags = npages;
+				for (i = 0; i < npages; i++) {
+					struct page *page;
+					skb_frag_t *frag;
+
+					page = alloc_pages(sk->sk_allocation, 0);
+					if (!page) {
+						err = -ENOBUFS;
+						skb_shinfo(skb)->nr_frags = i;
+						kfree_skb(skb);
+						goto failure;
+					}
+
+					frag = &skb_shinfo(skb)->frags[i];
+					frag->page = page;
+					frag->page_offset = 0;
+					frag->size = (data_len >= PAGE_SIZE ?
+						      PAGE_SIZE :
+						      data_len);
+					data_len -= PAGE_SIZE;
+				}
+
+				/* Full success... */
+				break;
+			}
+			err = -ENOBUFS;
+			goto failure;
+		}
+		set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+		set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+		err = -EAGAIN;
+		if (!timeo)
+			goto failure;
+		if (signal_pending(current))
+			goto interrupted;
+		timeo = sock_wait_for_wmem(sk, timeo);
+	}
+
+	skb_set_owner_w(skb, sk);
+	return skb;
+
+interrupted:
+	err = sock_intr_errno(timeo);
+failure:
+	*errcode = err;
+	return NULL;
+}
+
+struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size,
+				    int noblock, int *errcode)
+{
+	return sock_alloc_send_pskb(sk, size, 0, noblock, errcode);
+}
+
+static void __lock_sock(struct sock *sk)
+{
+	DEFINE_WAIT(wait);
+
+	for (;;) {
+		prepare_to_wait_exclusive(&sk->sk_lock.wq, &wait,
+					TASK_UNINTERRUPTIBLE);
+		spin_unlock_bh(&sk->sk_lock.slock);
+		schedule();
+		spin_lock_bh(&sk->sk_lock.slock);
+		if (!sock_owned_by_user(sk))
+			break;
+	}
+	finish_wait(&sk->sk_lock.wq, &wait);
+}
+
+static void __release_sock(struct sock *sk)
+{
+	struct sk_buff *skb = sk->sk_backlog.head;
+
+	do {
+		sk->sk_backlog.head = sk->sk_backlog.tail = NULL;
+		bh_unlock_sock(sk);
+
+		do {
+			struct sk_buff *next = skb->next;
+
+			skb->next = NULL;
+			sk_backlog_rcv(sk, skb);
+
+			/*
+			 * We are in process context here with softirqs
+			 * disabled, use cond_resched_softirq() to preempt.
+			 * This is safe to do because we've taken the backlog
+			 * queue private:
+			 */
+			cond_resched_softirq();
+
+			skb = next;
+		} while (skb != NULL);
+
+		bh_lock_sock(sk);
+	} while ((skb = sk->sk_backlog.head) != NULL);
+}
+
+/**
+ * sk_wait_data - wait for data to arrive at sk_receive_queue
+ * @sk:    sock to wait on
+ * @timeo: for how long
+ *
+ * Now socket state including sk->sk_err is changed only under lock,
+ * hence we may omit checks after joining wait queue.
+ * We check receive queue before schedule() only as optimization;
+ * it is very likely that release_sock() added new data.
+ */
+int sk_wait_data(struct sock *sk, long *timeo)
+{
+	int rc;
+	DEFINE_WAIT(wait);
+
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+	rc = sk_wait_event(sk, timeo, !skb_queue_empty(&sk->sk_receive_queue));
+	clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+	finish_wait(sk->sk_sleep, &wait);
+	return rc;
+}
+
+EXPORT_SYMBOL(sk_wait_data);
+
+/**
+ *	__sk_mem_schedule - increase sk_forward_alloc and memory_allocated
+ *	@sk: socket
+ *	@size: memory size to allocate
+ *	@kind: allocation type
+ *
+ *	If kind is SK_MEM_SEND, it means wmem allocation. Otherwise it means
+ *	rmem allocation. This function assumes that protocols which have
+ *	memory_pressure use sk_wmem_queued as write buffer accounting.
+ */
+int __sk_mem_schedule(struct sock *sk, int size, int kind)
+{
+	struct proto *prot = sk->sk_prot;
+	int amt = sk_mem_pages(size);
+	int allocated;
+
+	sk->sk_forward_alloc += amt * SK_MEM_QUANTUM;
+	allocated = atomic_add_return(amt, prot->memory_allocated);
+
+	/* Under limit. */
+	if (allocated <= prot->sysctl_mem[0]) {
+		if (prot->memory_pressure && *prot->memory_pressure)
+			*prot->memory_pressure = 0;
+		return 1;
+	}
+
+	/* Under pressure. */
+	if (allocated > prot->sysctl_mem[1])
+		if (prot->enter_memory_pressure)
+			prot->enter_memory_pressure(sk);
+
+	/* Over hard limit. */
+	if (allocated > prot->sysctl_mem[2])
+		goto suppress_allocation;
+
+	/* guarantee minimum buffer size under pressure */
+	if (kind == SK_MEM_RECV) {
+		if (atomic_read(&sk->sk_rmem_alloc) < prot->sysctl_rmem[0])
+			return 1;
+	} else { /* SK_MEM_SEND */
+		if (sk->sk_type == SOCK_STREAM) {
+			if (sk->sk_wmem_queued < prot->sysctl_wmem[0])
+				return 1;
+		} else if (atomic_read(&sk->sk_wmem_alloc) <
+			   prot->sysctl_wmem[0])
+				return 1;
+	}
+
+	if (prot->memory_pressure) {
+		int alloc;
+
+		if (!*prot->memory_pressure)
+			return 1;
+		alloc = percpu_counter_read_positive(prot->sockets_allocated);
+		if (prot->sysctl_mem[2] > alloc *
+		    sk_mem_pages(sk->sk_wmem_queued +
+				 atomic_read(&sk->sk_rmem_alloc) +
+				 sk->sk_forward_alloc))
+			return 1;
+	}
+
+suppress_allocation:
+
+	if (kind == SK_MEM_SEND && sk->sk_type == SOCK_STREAM) {
+		sk_stream_moderate_sndbuf(sk);
+
+		/* Fail only if socket is _under_ its sndbuf.
+		 * In this case we cannot block, so that we have to fail.
+		 */
+		if (sk->sk_wmem_queued + size >= sk->sk_sndbuf)
+			return 1;
+	}
+
+	/* Alas. Undo changes. */
+	sk->sk_forward_alloc -= amt * SK_MEM_QUANTUM;
+	atomic_sub(amt, prot->memory_allocated);
+	return 0;
+}
+
+EXPORT_SYMBOL(__sk_mem_schedule);
+
+/**
+ *	__sk_reclaim - reclaim memory_allocated
+ *	@sk: socket
+ */
+void __sk_mem_reclaim(struct sock *sk)
+{
+	struct proto *prot = sk->sk_prot;
+
+	atomic_sub(sk->sk_forward_alloc >> SK_MEM_QUANTUM_SHIFT,
+		   prot->memory_allocated);
+	sk->sk_forward_alloc &= SK_MEM_QUANTUM - 1;
+
+	if (prot->memory_pressure && *prot->memory_pressure &&
+	    (atomic_read(prot->memory_allocated) < prot->sysctl_mem[0]))
+		*prot->memory_pressure = 0;
+}
+
+EXPORT_SYMBOL(__sk_mem_reclaim);
+
+
+/*
+ * Set of default routines for initialising struct proto_ops when
+ * the protocol does not support a particular function. In certain
+ * cases where it makes no sense for a protocol to have a "do nothing"
+ * function, some default processing is provided.
+ */
+
+int sock_no_bind(struct socket *sock, struct sockaddr *saddr, int len)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_connect(struct socket *sock, struct sockaddr *saddr,
+		    int len, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_socketpair(struct socket *sock1, struct socket *sock2)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_getname(struct socket *sock, struct sockaddr *saddr,
+		    int *len, int peer)
+{
+	return -EOPNOTSUPP;
+}
+
+unsigned int sock_no_poll(struct file * file, struct socket *sock, poll_table *pt)
+{
+	return 0;
+}
+
+int sock_no_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_listen(struct socket *sock, int backlog)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_shutdown(struct socket *sock, int how)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_setsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_getsockopt(struct socket *sock, int level, int optname,
+		    char __user *optval, int __user *optlen)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
+		    size_t len)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
+		    size_t len, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+int sock_no_mmap(struct file *file, struct socket *sock, struct vm_area_struct *vma)
+{
+	/* Mirror missing mmap method error code */
+	return -ENODEV;
+}
+
+ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags)
+{
+	ssize_t res;
+	struct msghdr msg = {.msg_flags = flags};
+	struct kvec iov;
+	char *kaddr = kmap(page);
+	iov.iov_base = kaddr + offset;
+	iov.iov_len = size;
+	res = kernel_sendmsg(sock, &msg, &iov, 1, size);
+	kunmap(page);
+	return res;
+}
+
+/*
+ *	Default Socket Callbacks
+ */
+
+static void sock_def_wakeup(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up_interruptible_all(sk->sk_sleep);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_error_report(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up_interruptible(sk->sk_sleep);
+	sk_wake_async(sk, SOCK_WAKE_IO, POLL_ERR);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_readable(struct sock *sk, int len)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up_interruptible_sync(sk->sk_sleep);
+	sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_write_space(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+
+	/* Do not wake up a writer until he can make "significant"
+	 * progress.  --DaveM
+	 */
+	if ((atomic_read(&sk->sk_wmem_alloc) << 1) <= sk->sk_sndbuf) {
+		if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+			wake_up_interruptible_sync(sk->sk_sleep);
+
+		/* Should agree with poll, otherwise some programs break */
+		if (sock_writeable(sk))
+			sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
+	}
+
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_def_destruct(struct sock *sk)
+{
+	kfree(sk->sk_protinfo);
+}
+
+void sk_send_sigurg(struct sock *sk)
+{
+	if (sk->sk_socket && sk->sk_socket->file)
+		if (send_sigurg(&sk->sk_socket->file->f_owner))
+			sk_wake_async(sk, SOCK_WAKE_URG, POLL_PRI);
+}
+
+void sk_reset_timer(struct sock *sk, struct timer_list* timer,
+		    unsigned long expires)
+{
+	if (!mod_timer(timer, expires))
+		sock_hold(sk);
+}
+
+EXPORT_SYMBOL(sk_reset_timer);
+
+void sk_stop_timer(struct sock *sk, struct timer_list* timer)
+{
+	if (timer_pending(timer) && del_timer(timer))
+		__sock_put(sk);
+}
+
+EXPORT_SYMBOL(sk_stop_timer);
+
+void sock_init_data(struct socket *sock, struct sock *sk)
+{
+	skb_queue_head_init(&sk->sk_receive_queue);
+	skb_queue_head_init(&sk->sk_write_queue);
+	skb_queue_head_init(&sk->sk_error_queue);
+#ifdef CONFIG_NET_DMA
+	skb_queue_head_init(&sk->sk_async_wait_queue);
+#endif
+
+	sk->sk_send_head	=	NULL;
+
+	init_timer(&sk->sk_timer);
+
+	sk->sk_allocation	=	GFP_KERNEL;
+	sk->sk_rcvbuf		=	sysctl_rmem_default;
+	sk->sk_sndbuf		=	sysctl_wmem_default;
+	sk->sk_state		=	TCP_CLOSE;
+	sk_set_socket(sk, sock);
+
+	sock_set_flag(sk, SOCK_ZAPPED);
+
+	if (sock) {
+		sk->sk_type	=	sock->type;
+		sk->sk_sleep	=	&sock->wait;
+		sock->sk	=	sk;
+	} else
+		sk->sk_sleep	=	NULL;
+
+	rwlock_init(&sk->sk_dst_lock);
+	rwlock_init(&sk->sk_callback_lock);
+	lockdep_set_class_and_name(&sk->sk_callback_lock,
+			af_callback_keys + sk->sk_family,
+			af_family_clock_key_strings[sk->sk_family]);
+
+	sk->sk_state_change	=	sock_def_wakeup;
+	sk->sk_data_ready	=	sock_def_readable;
+	sk->sk_write_space	=	sock_def_write_space;
+	sk->sk_error_report	=	sock_def_error_report;
+	sk->sk_destruct		=	sock_def_destruct;
+
+	sk->sk_sndmsg_page	=	NULL;
+	sk->sk_sndmsg_off	=	0;
+
+	sk->sk_peercred.pid 	=	0;
+	sk->sk_peercred.uid	=	-1;
+	sk->sk_peercred.gid	=	-1;
+	sk->sk_write_pending	=	0;
+	sk->sk_rcvlowat		=	1;
+	sk->sk_rcvtimeo		=	MAX_SCHEDULE_TIMEOUT;
+	sk->sk_sndtimeo		=	MAX_SCHEDULE_TIMEOUT;
+
+	sk->sk_stamp = ktime_set(-1L, 0);
+
+	atomic_set(&sk->sk_refcnt, 1);
+	atomic_set(&sk->sk_drops, 0);
+}
+
+void lock_sock_nested(struct sock *sk, int subclass)
+{
+	might_sleep();
+	spin_lock_bh(&sk->sk_lock.slock);
+	if (sk->sk_lock.owned)
+		__lock_sock(sk);
+	sk->sk_lock.owned = 1;
+	spin_unlock(&sk->sk_lock.slock);
+	/*
+	 * The sk_lock has mutex_lock() semantics here:
+	 */
+	mutex_acquire(&sk->sk_lock.dep_map, subclass, 0, _RET_IP_);
+	local_bh_enable();
+}
+
+EXPORT_SYMBOL(lock_sock_nested);
+
+void release_sock(struct sock *sk)
+{
+	/*
+	 * The sk_lock has mutex_unlock() semantics:
+	 */
+	mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
+
+	spin_lock_bh(&sk->sk_lock.slock);
+	if (sk->sk_backlog.tail)
+		__release_sock(sk);
+	sk->sk_lock.owned = 0;
+	if (waitqueue_active(&sk->sk_lock.wq))
+		wake_up(&sk->sk_lock.wq);
+	spin_unlock_bh(&sk->sk_lock.slock);
+}
+EXPORT_SYMBOL(release_sock);
+
+int sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
+{
+	struct timeval tv;
+	if (!sock_flag(sk, SOCK_TIMESTAMP))
+		sock_enable_timestamp(sk);
+	tv = ktime_to_timeval(sk->sk_stamp);
+	if (tv.tv_sec == -1)
+		return -ENOENT;
+	if (tv.tv_sec == 0) {
+		sk->sk_stamp = ktime_get_real();
+		tv = ktime_to_timeval(sk->sk_stamp);
+	}
+	return copy_to_user(userstamp, &tv, sizeof(tv)) ? -EFAULT : 0;
+}
+EXPORT_SYMBOL(sock_get_timestamp);
+
+int sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
+{
+	struct timespec ts;
+	if (!sock_flag(sk, SOCK_TIMESTAMP))
+		sock_enable_timestamp(sk);
+	ts = ktime_to_timespec(sk->sk_stamp);
+	if (ts.tv_sec == -1)
+		return -ENOENT;
+	if (ts.tv_sec == 0) {
+		sk->sk_stamp = ktime_get_real();
+		ts = ktime_to_timespec(sk->sk_stamp);
+	}
+	return copy_to_user(userstamp, &ts, sizeof(ts)) ? -EFAULT : 0;
+}
+EXPORT_SYMBOL(sock_get_timestampns);
+
+void sock_enable_timestamp(struct sock *sk)
+{
+	if (!sock_flag(sk, SOCK_TIMESTAMP)) {
+		sock_set_flag(sk, SOCK_TIMESTAMP);
+		net_enable_timestamp();
+	}
+}
+
+/*
+ *	Get a socket option on an socket.
+ *
+ *	FIX: POSIX 1003.1g is very ambiguous here. It states that
+ *	asynchronous errors should be reported by getsockopt. We assume
+ *	this means if you specify SO_ERROR (otherwise whats the point of it).
+ */
+int sock_common_getsockopt(struct socket *sock, int level, int optname,
+			   char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
+}
+
+EXPORT_SYMBOL(sock_common_getsockopt);
+
+#ifdef CONFIG_COMPAT
+int compat_sock_common_getsockopt(struct socket *sock, int level, int optname,
+				  char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk->sk_prot->compat_getsockopt != NULL)
+		return sk->sk_prot->compat_getsockopt(sk, level, optname,
+						      optval, optlen);
+	return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_getsockopt);
+#endif
+
+int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock,
+			struct msghdr *msg, size_t size, int flags)
+{
+	struct sock *sk = sock->sk;
+	int addr_len = 0;
+	int err;
+
+	err = sk->sk_prot->recvmsg(iocb, sk, msg, size, flags & MSG_DONTWAIT,
+				   flags & ~MSG_DONTWAIT, &addr_len);
+	if (err >= 0)
+		msg->msg_namelen = addr_len;
+	return err;
+}
+
+EXPORT_SYMBOL(sock_common_recvmsg);
+
+/*
+ *	Set socket options on an inet socket.
+ */
+int sock_common_setsockopt(struct socket *sock, int level, int optname,
+			   char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+
+	return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
+}
+
+EXPORT_SYMBOL(sock_common_setsockopt);
+
+#ifdef CONFIG_COMPAT
+int compat_sock_common_setsockopt(struct socket *sock, int level, int optname,
+				  char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk->sk_prot->compat_setsockopt != NULL)
+		return sk->sk_prot->compat_setsockopt(sk, level, optname,
+						      optval, optlen);
+	return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_setsockopt);
+#endif
+
+void sk_common_release(struct sock *sk)
+{
+	if (sk->sk_prot->destroy)
+		sk->sk_prot->destroy(sk);
+
+	/*
+	 * Observation: when sock_common_release is called, processes have
+	 * no access to socket. But net still has.
+	 * Step one, detach it from networking:
+	 *
+	 * A. Remove from hash tables.
+	 */
+
+	sk->sk_prot->unhash(sk);
+
+	/*
+	 * In this point socket cannot receive new packets, but it is possible
+	 * that some packets are in flight because some CPU runs receiver and
+	 * did hash table lookup before we unhashed socket. They will achieve
+	 * receive queue and will be purged by socket destructor.
+	 *
+	 * Also we still have packets pending on receive queue and probably,
+	 * our own packets waiting in device queues. sock_destroy will drain
+	 * receive queue, but transmitted packets will delay socket destruction
+	 * until the last reference will be released.
+	 */
+
+	sock_orphan(sk);
+
+	xfrm_sk_free_policy(sk);
+
+	sk_refcnt_debug_release(sk);
+	sock_put(sk);
+}
+
+EXPORT_SYMBOL(sk_common_release);
+
+static DEFINE_RWLOCK(proto_list_lock);
+static LIST_HEAD(proto_list);
+
+#ifdef CONFIG_PROC_FS
+#define PROTO_INUSE_NR	64	/* should be enough for the first time */
+struct prot_inuse {
+	int val[PROTO_INUSE_NR];
+};
+
+static DECLARE_BITMAP(proto_inuse_idx, PROTO_INUSE_NR);
+
+#ifdef CONFIG_NET_NS
+void sock_prot_inuse_add(struct net *net, struct proto *prot, int val)
+{
+	int cpu = smp_processor_id();
+	per_cpu_ptr(net->core.inuse, cpu)->val[prot->inuse_idx] += val;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_add);
+
+int sock_prot_inuse_get(struct net *net, struct proto *prot)
+{
+	int cpu, idx = prot->inuse_idx;
+	int res = 0;
+
+	for_each_possible_cpu(cpu)
+		res += per_cpu_ptr(net->core.inuse, cpu)->val[idx];
+
+	return res >= 0 ? res : 0;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_get);
+
+static int sock_inuse_init_net(struct net *net)
+{
+	net->core.inuse = alloc_percpu(struct prot_inuse);
+	return net->core.inuse ? 0 : -ENOMEM;
+}
+
+static void sock_inuse_exit_net(struct net *net)
+{
+	free_percpu(net->core.inuse);
+}
+
+static struct pernet_operations net_inuse_ops = {
+	.init = sock_inuse_init_net,
+	.exit = sock_inuse_exit_net,
+};
+
+static __init int net_inuse_init(void)
+{
+	if (register_pernet_subsys(&net_inuse_ops))
+		panic("Cannot initialize net inuse counters");
+
+	return 0;
+}
+
+core_initcall(net_inuse_init);
+#else
+static DEFINE_PER_CPU(struct prot_inuse, prot_inuse);
+
+void sock_prot_inuse_add(struct net *net, struct proto *prot, int val)
+{
+	__get_cpu_var(prot_inuse).val[prot->inuse_idx] += val;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_add);
+
+int sock_prot_inuse_get(struct net *net, struct proto *prot)
+{
+	int cpu, idx = prot->inuse_idx;
+	int res = 0;
+
+	for_each_possible_cpu(cpu)
+		res += per_cpu(prot_inuse, cpu).val[idx];
+
+	return res >= 0 ? res : 0;
+}
+EXPORT_SYMBOL_GPL(sock_prot_inuse_get);
+#endif
+
+static void assign_proto_idx(struct proto *prot)
+{
+	prot->inuse_idx = find_first_zero_bit(proto_inuse_idx, PROTO_INUSE_NR);
+
+	if (unlikely(prot->inuse_idx == PROTO_INUSE_NR - 1)) {
+		printk(KERN_ERR "PROTO_INUSE_NR exhausted\n");
+		return;
+	}
+
+	set_bit(prot->inuse_idx, proto_inuse_idx);
+}
+
+static void release_proto_idx(struct proto *prot)
+{
+	if (prot->inuse_idx != PROTO_INUSE_NR - 1)
+		clear_bit(prot->inuse_idx, proto_inuse_idx);
+}
+#else
+static inline void assign_proto_idx(struct proto *prot)
+{
+}
+
+static inline void release_proto_idx(struct proto *prot)
+{
+}
+#endif
+
+int proto_register(struct proto *prot, int alloc_slab)
+{
+	if (alloc_slab) {
+		prot->slab = kmem_cache_create(prot->name, prot->obj_size, 0,
+					SLAB_HWCACHE_ALIGN | prot->slab_flags,
+					NULL);
+
+		if (prot->slab == NULL) {
+			printk(KERN_CRIT "%s: Can't create sock SLAB cache!\n",
+			       prot->name);
+			goto out;
+		}
+
+		if (prot->rsk_prot != NULL) {
+			static const char mask[] = "request_sock_%s";
+
+			prot->rsk_prot->slab_name = kmalloc(strlen(prot->name) + sizeof(mask) - 1, GFP_KERNEL);
+			if (prot->rsk_prot->slab_name == NULL)
+				goto out_free_sock_slab;
+
+			sprintf(prot->rsk_prot->slab_name, mask, prot->name);
+			prot->rsk_prot->slab = kmem_cache_create(prot->rsk_prot->slab_name,
+								 prot->rsk_prot->obj_size, 0,
+								 SLAB_HWCACHE_ALIGN, NULL);
+
+			if (prot->rsk_prot->slab == NULL) {
+				printk(KERN_CRIT "%s: Can't create request sock SLAB cache!\n",
+				       prot->name);
+				goto out_free_request_sock_slab_name;
+			}
+		}
+
+		if (prot->twsk_prot != NULL) {
+			static const char mask[] = "tw_sock_%s";
+
+			prot->twsk_prot->twsk_slab_name = kmalloc(strlen(prot->name) + sizeof(mask) - 1, GFP_KERNEL);
+
+			if (prot->twsk_prot->twsk_slab_name == NULL)
+				goto out_free_request_sock_slab;
+
+			sprintf(prot->twsk_prot->twsk_slab_name, mask, prot->name);
+			prot->twsk_prot->twsk_slab =
+				kmem_cache_create(prot->twsk_prot->twsk_slab_name,
+						  prot->twsk_prot->twsk_obj_size,
+						  0,
+						  SLAB_HWCACHE_ALIGN |
+							prot->slab_flags,
+						  NULL);
+			if (prot->twsk_prot->twsk_slab == NULL)
+				goto out_free_timewait_sock_slab_name;
+		}
+	}
+
+	write_lock(&proto_list_lock);
+	list_add(&prot->node, &proto_list);
+	assign_proto_idx(prot);
+	write_unlock(&proto_list_lock);
+	return 0;
+
+out_free_timewait_sock_slab_name:
+	kfree(prot->twsk_prot->twsk_slab_name);
+out_free_request_sock_slab:
+	if (prot->rsk_prot && prot->rsk_prot->slab) {
+		kmem_cache_destroy(prot->rsk_prot->slab);
+		prot->rsk_prot->slab = NULL;
+	}
+out_free_request_sock_slab_name:
+	kfree(prot->rsk_prot->slab_name);
+out_free_sock_slab:
+	kmem_cache_destroy(prot->slab);
+	prot->slab = NULL;
+out:
+	return -ENOBUFS;
+}
+
+EXPORT_SYMBOL(proto_register);
+
+void proto_unregister(struct proto *prot)
+{
+	write_lock(&proto_list_lock);
+	release_proto_idx(prot);
+	list_del(&prot->node);
+	write_unlock(&proto_list_lock);
+
+	if (prot->slab != NULL) {
+		kmem_cache_destroy(prot->slab);
+		prot->slab = NULL;
+	}
+
+	if (prot->rsk_prot != NULL && prot->rsk_prot->slab != NULL) {
+		kmem_cache_destroy(prot->rsk_prot->slab);
+		kfree(prot->rsk_prot->slab_name);
+		prot->rsk_prot->slab = NULL;
+	}
+
+	if (prot->twsk_prot != NULL && prot->twsk_prot->twsk_slab != NULL) {
+		kmem_cache_destroy(prot->twsk_prot->twsk_slab);
+		kfree(prot->twsk_prot->twsk_slab_name);
+		prot->twsk_prot->twsk_slab = NULL;
+	}
+}
+
+EXPORT_SYMBOL(proto_unregister);
+
+#ifdef CONFIG_PROC_FS
+static void *proto_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(proto_list_lock)
+{
+	read_lock(&proto_list_lock);
+	return seq_list_start_head(&proto_list, *pos);
+}
+
+static void *proto_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	return seq_list_next(v, &proto_list, pos);
+}
+
+static void proto_seq_stop(struct seq_file *seq, void *v)
+	__releases(proto_list_lock)
+{
+	read_unlock(&proto_list_lock);
+}
+
+static char proto_method_implemented(const void *method)
+{
+	return method == NULL ? 'n' : 'y';
+}
+
+static void proto_seq_printf(struct seq_file *seq, struct proto *proto)
+{
+	seq_printf(seq, "%-9s %4u %6d  %6d   %-3s %6u   %-3s  %-10s "
+			"%2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c\n",
+		   proto->name,
+		   proto->obj_size,
+		   sock_prot_inuse_get(seq_file_net(seq), proto),
+		   proto->memory_allocated != NULL ? atomic_read(proto->memory_allocated) : -1,
+		   proto->memory_pressure != NULL ? *proto->memory_pressure ? "yes" : "no" : "NI",
+		   proto->max_header,
+		   proto->slab == NULL ? "no" : "yes",
+		   module_name(proto->owner),
+		   proto_method_implemented(proto->close),
+		   proto_method_implemented(proto->connect),
+		   proto_method_implemented(proto->disconnect),
+		   proto_method_implemented(proto->accept),
+		   proto_method_implemented(proto->ioctl),
+		   proto_method_implemented(proto->init),
+		   proto_method_implemented(proto->destroy),
+		   proto_method_implemented(proto->shutdown),
+		   proto_method_implemented(proto->setsockopt),
+		   proto_method_implemented(proto->getsockopt),
+		   proto_method_implemented(proto->sendmsg),
+		   proto_method_implemented(proto->recvmsg),
+		   proto_method_implemented(proto->sendpage),
+		   proto_method_implemented(proto->bind),
+		   proto_method_implemented(proto->backlog_rcv),
+		   proto_method_implemented(proto->hash),
+		   proto_method_implemented(proto->unhash),
+		   proto_method_implemented(proto->get_port),
+		   proto_method_implemented(proto->enter_memory_pressure));
+}
+
+static int proto_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == &proto_list)
+		seq_printf(seq, "%-9s %-4s %-8s %-6s %-5s %-7s %-4s %-10s %s",
+			   "protocol",
+			   "size",
+			   "sockets",
+			   "memory",
+			   "press",
+			   "maxhdr",
+			   "slab",
+			   "module",
+			   "cl co di ac io in de sh ss gs se re sp bi br ha uh gp em\n");
+	else
+		proto_seq_printf(seq, list_entry(v, struct proto, node));
+	return 0;
+}
+
+static const struct seq_operations proto_seq_ops = {
+	.start  = proto_seq_start,
+	.next   = proto_seq_next,
+	.stop   = proto_seq_stop,
+	.show   = proto_seq_show,
+};
+
+static int proto_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &proto_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations proto_seq_fops = {
+	.owner		= THIS_MODULE,
+	.open		= proto_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release_net,
+};
+
+static __net_init int proto_init_net(struct net *net)
+{
+	if (!proc_net_fops_create(net, "protocols", S_IRUGO, &proto_seq_fops))
+		return -ENOMEM;
+
+	return 0;
+}
+
+static __net_exit void proto_exit_net(struct net *net)
+{
+	proc_net_remove(net, "protocols");
+}
+
+
+static __net_initdata struct pernet_operations proto_net_ops = {
+	.init = proto_init_net,
+	.exit = proto_exit_net,
+};
+
+static int __init proto_init(void)
+{
+	return register_pernet_subsys(&proto_net_ops);
+}
+
+subsys_initcall(proto_init);
+
+#endif /* PROC_FS */
+
+EXPORT_SYMBOL(sk_alloc);
+EXPORT_SYMBOL(sk_free);
+EXPORT_SYMBOL(sk_send_sigurg);
+EXPORT_SYMBOL(sock_alloc_send_skb);
+EXPORT_SYMBOL(sock_init_data);
+EXPORT_SYMBOL(sock_kfree_s);
+EXPORT_SYMBOL(sock_kmalloc);
+EXPORT_SYMBOL(sock_no_accept);
+EXPORT_SYMBOL(sock_no_bind);
+EXPORT_SYMBOL(sock_no_connect);
+EXPORT_SYMBOL(sock_no_getname);
+EXPORT_SYMBOL(sock_no_getsockopt);
+EXPORT_SYMBOL(sock_no_ioctl);
+EXPORT_SYMBOL(sock_no_listen);
+EXPORT_SYMBOL(sock_no_mmap);
+EXPORT_SYMBOL(sock_no_poll);
+EXPORT_SYMBOL(sock_no_recvmsg);
+EXPORT_SYMBOL(sock_no_sendmsg);
+EXPORT_SYMBOL(sock_no_sendpage);
+EXPORT_SYMBOL(sock_no_setsockopt);
+EXPORT_SYMBOL(sock_no_shutdown);
+EXPORT_SYMBOL(sock_no_socketpair);
+EXPORT_SYMBOL(sock_rfree);
+EXPORT_SYMBOL(sock_setsockopt);
+EXPORT_SYMBOL(sock_wfree);
+EXPORT_SYMBOL(sock_wmalloc);
+EXPORT_SYMBOL(sock_i_uid);
+EXPORT_SYMBOL(sock_i_ino);
+EXPORT_SYMBOL(sysctl_optmem_max);
diff --git a/libdde_linux26/contrib/net/ethernet/.svn/all-wcprops b/libdde_linux26/contrib/net/ethernet/.svn/all-wcprops
new file mode 100644
index 00000000..927d242c
--- /dev/null
+++ b/libdde_linux26/contrib/net/ethernet/.svn/all-wcprops
@@ -0,0 +1,11 @@
+K 25
+svn:wc:ra_dav:version-url
+V 71
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/ethernet
+END
+eth.c
+K 25
+svn:wc:ra_dav:version-url
+V 77
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/ethernet/eth.c
+END
diff --git a/libdde_linux26/contrib/net/ethernet/.svn/entries b/libdde_linux26/contrib/net/ethernet/.svn/entries
new file mode 100644
index 00000000..1a83a365
--- /dev/null
+++ b/libdde_linux26/contrib/net/ethernet/.svn/entries
@@ -0,0 +1,62 @@
+9
+
+dir
+465
+http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/contrib/net/ethernet
+http://svn.tudos.org/repos/tudos
+
+
+
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+svn:special svn:externals svn:needs-lock
+
+
+
+
+
+
+
+
+
+
+
+a704ac0b-3a55-4d43-a2a9-7be6f07c34fb
+
+eth.c
+file
+
+
+
+
+2009-11-15T17:16:35.000000Z
+9e32e52c590d3469dc0e13f209149807
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+11140
+
diff --git a/libdde_linux26/contrib/net/ethernet/.svn/format b/libdde_linux26/contrib/net/ethernet/.svn/format
new file mode 100644
index 00000000..ec635144
--- /dev/null
+++ b/libdde_linux26/contrib/net/ethernet/.svn/format
@@ -0,0 +1 @@
+9
diff --git a/libdde_linux26/contrib/net/ethernet/.svn/text-base/eth.c.svn-base b/libdde_linux26/contrib/net/ethernet/.svn/text-base/eth.c.svn-base
new file mode 100644
index 00000000..280352ab
--- /dev/null
+++ b/libdde_linux26/contrib/net/ethernet/.svn/text-base/eth.c.svn-base
@@ -0,0 +1,407 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Ethernet-type device handling.
+ *
+ * Version:	@(#)eth.c	1.0.7	05/25/93
+ *
+ * Authors:	Ross Biro
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *		Mark Evans, <evansmp@uhura.aston.ac.uk>
+ *		Florian  La Roche, <rzsfl@rz.uni-sb.de>
+ *		Alan Cox, <gw4pts@gw4pts.ampr.org>
+ *
+ * Fixes:
+ *		Mr Linux	: Arp problems
+ *		Alan Cox	: Generic queue tidyup (very tiny here)
+ *		Alan Cox	: eth_header ntohs should be htons
+ *		Alan Cox	: eth_rebuild_header missing an htons and
+ *				  minor other things.
+ *		Tegge		: Arp bug fixes.
+ *		Florian		: Removed many unnecessary functions, code cleanup
+ *				  and changes for new arp and skbuff.
+ *		Alan Cox	: Redid header building to reflect new format.
+ *		Alan Cox	: ARP only when compiled with CONFIG_INET
+ *		Greg Page	: 802.2 and SNAP stuff.
+ *		Alan Cox	: MAC layer pointers/new format.
+ *		Paul Gortmaker	: eth_copy_and_sum shouldn't csum padding.
+ *		Alan Cox	: Protect against forwarding explosions with
+ *				  older network drivers and IFF_ALLMULTI.
+ *	Christer Weinigel	: Better rebuild header message.
+ *             Andrew Morton    : 26Feb01: kill ether_setup() - use netdev_boot_setup().
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/if_ether.h>
+#include <net/dst.h>
+#include <net/arp.h>
+#include <net/sock.h>
+#include <net/ipv6.h>
+#include <net/ip.h>
+#include <net/dsa.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+__setup("ether=", netdev_boot_setup);
+
+/**
+ * eth_header - create the Ethernet header
+ * @skb:	buffer to alter
+ * @dev:	source device
+ * @type:	Ethernet type field
+ * @daddr: destination address (NULL leave destination address)
+ * @saddr: source address (NULL use device source address)
+ * @len:   packet length (<= skb->len)
+ *
+ *
+ * Set the protocol type. For a packet of type ETH_P_802_3 we put the length
+ * in here instead. It is up to the 802.2 layer to carry protocol information.
+ */
+int eth_header(struct sk_buff *skb, struct net_device *dev,
+	       unsigned short type,
+	       const void *daddr, const void *saddr, unsigned len)
+{
+	struct ethhdr *eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
+
+	if (type != ETH_P_802_3)
+		eth->h_proto = htons(type);
+	else
+		eth->h_proto = htons(len);
+
+	/*
+	 *      Set the source hardware address.
+	 */
+
+	if (!saddr)
+		saddr = dev->dev_addr;
+	memcpy(eth->h_source, saddr, ETH_ALEN);
+
+	if (daddr) {
+		memcpy(eth->h_dest, daddr, ETH_ALEN);
+		return ETH_HLEN;
+	}
+
+	/*
+	 *      Anyway, the loopback-device should never use this function...
+	 */
+
+	if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
+		memset(eth->h_dest, 0, ETH_ALEN);
+		return ETH_HLEN;
+	}
+
+	return -ETH_HLEN;
+}
+EXPORT_SYMBOL(eth_header);
+
+/**
+ * eth_rebuild_header- rebuild the Ethernet MAC header.
+ * @skb: socket buffer to update
+ *
+ * This is called after an ARP or IPV6 ndisc it's resolution on this
+ * sk_buff. We now let protocol (ARP) fill in the other fields.
+ *
+ * This routine CANNOT use cached dst->neigh!
+ * Really, it is used only when dst->neigh is wrong.
+ */
+int eth_rebuild_header(struct sk_buff *skb)
+{
+	struct ethhdr *eth = (struct ethhdr *)skb->data;
+	struct net_device *dev = skb->dev;
+
+	switch (eth->h_proto) {
+#ifdef CONFIG_INET
+	case htons(ETH_P_IP):
+		return arp_find(eth->h_dest, skb);
+#endif
+	default:
+		printk(KERN_DEBUG
+		       "%s: unable to resolve type %X addresses.\n",
+		       dev->name, (int)eth->h_proto);
+
+		memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
+		break;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(eth_rebuild_header);
+
+/**
+ * eth_type_trans - determine the packet's protocol ID.
+ * @skb: received socket data
+ * @dev: receiving network device
+ *
+ * The rule here is that we
+ * assume 802.3 if the type field is short enough to be a length.
+ * This is normal practice and works for any 'now in use' protocol.
+ */
+__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ethhdr *eth;
+	unsigned char *rawp;
+
+	skb->dev = dev;
+	skb_reset_mac_header(skb);
+	skb_pull(skb, ETH_HLEN);
+	eth = eth_hdr(skb);
+
+	if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
+		if (!compare_ether_addr_64bits(eth->h_dest, dev->broadcast))
+			skb->pkt_type = PACKET_BROADCAST;
+		else
+			skb->pkt_type = PACKET_MULTICAST;
+	}
+
+	/*
+	 *      This ALLMULTI check should be redundant by 1.4
+	 *      so don't forget to remove it.
+	 *
+	 *      Seems, you forgot to remove it. All silly devices
+	 *      seems to set IFF_PROMISC.
+	 */
+
+	else if (1 /*dev->flags&IFF_PROMISC */ ) {
+		if (unlikely(compare_ether_addr_64bits(eth->h_dest, dev->dev_addr)))
+			skb->pkt_type = PACKET_OTHERHOST;
+	}
+
+	/*
+	 * Some variants of DSA tagging don't have an ethertype field
+	 * at all, so we check here whether one of those tagging
+	 * variants has been configured on the receiving interface,
+	 * and if so, set skb->protocol without looking at the packet.
+	 */
+	if (netdev_uses_dsa_tags(dev))
+		return htons(ETH_P_DSA);
+	if (netdev_uses_trailer_tags(dev))
+		return htons(ETH_P_TRAILER);
+
+	if (ntohs(eth->h_proto) >= 1536)
+		return eth->h_proto;
+
+	rawp = skb->data;
+
+	/*
+	 *      This is a magic hack to spot IPX packets. Older Novell breaks
+	 *      the protocol design and runs IPX over 802.3 without an 802.2 LLC
+	 *      layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
+	 *      won't work for fault tolerant netware but does for the rest.
+	 */
+	if (*(unsigned short *)rawp == 0xFFFF)
+		return htons(ETH_P_802_3);
+
+	/*
+	 *      Real 802.2 LLC
+	 */
+	return htons(ETH_P_802_2);
+}
+EXPORT_SYMBOL(eth_type_trans);
+
+/**
+ * eth_header_parse - extract hardware address from packet
+ * @skb: packet to extract header from
+ * @haddr: destination buffer
+ */
+int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+	const struct ethhdr *eth = eth_hdr(skb);
+	memcpy(haddr, eth->h_source, ETH_ALEN);
+	return ETH_ALEN;
+}
+EXPORT_SYMBOL(eth_header_parse);
+
+/**
+ * eth_header_cache - fill cache entry from neighbour
+ * @neigh: source neighbour
+ * @hh: destination cache entry
+ * Create an Ethernet header template from the neighbour.
+ */
+int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh)
+{
+	__be16 type = hh->hh_type;
+	struct ethhdr *eth;
+	const struct net_device *dev = neigh->dev;
+
+	eth = (struct ethhdr *)
+	    (((u8 *) hh->hh_data) + (HH_DATA_OFF(sizeof(*eth))));
+
+	if (type == htons(ETH_P_802_3))
+		return -1;
+
+	eth->h_proto = type;
+	memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
+	memcpy(eth->h_dest, neigh->ha, ETH_ALEN);
+	hh->hh_len = ETH_HLEN;
+	return 0;
+}
+EXPORT_SYMBOL(eth_header_cache);
+
+/**
+ * eth_header_cache_update - update cache entry
+ * @hh: destination cache entry
+ * @dev: network device
+ * @haddr: new hardware address
+ *
+ * Called by Address Resolution module to notify changes in address.
+ */
+void eth_header_cache_update(struct hh_cache *hh,
+			     const struct net_device *dev,
+			     const unsigned char *haddr)
+{
+	memcpy(((u8 *) hh->hh_data) + HH_DATA_OFF(sizeof(struct ethhdr)),
+	       haddr, ETH_ALEN);
+}
+EXPORT_SYMBOL(eth_header_cache_update);
+
+/**
+ * eth_mac_addr - set new Ethernet hardware address
+ * @dev: network device
+ * @p: socket address
+ * Change hardware address of device.
+ *
+ * This doesn't change hardware matching, so needs to be overridden
+ * for most real devices.
+ */
+int eth_mac_addr(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
+	if (netif_running(dev))
+		return -EBUSY;
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+	return 0;
+}
+EXPORT_SYMBOL(eth_mac_addr);
+
+/**
+ * eth_change_mtu - set new MTU size
+ * @dev: network device
+ * @new_mtu: new Maximum Transfer Unit
+ *
+ * Allow changing MTU size. Needs to be overridden for devices
+ * supporting jumbo frames.
+ */
+int eth_change_mtu(struct net_device *dev, int new_mtu)
+{
+	if (new_mtu < 68 || new_mtu > ETH_DATA_LEN)
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	return 0;
+}
+EXPORT_SYMBOL(eth_change_mtu);
+
+int eth_validate_addr(struct net_device *dev)
+{
+	if (!is_valid_ether_addr(dev->dev_addr))
+		return -EADDRNOTAVAIL;
+
+	return 0;
+}
+EXPORT_SYMBOL(eth_validate_addr);
+
+const struct header_ops eth_header_ops ____cacheline_aligned = {
+	.create		= eth_header,
+	.parse		= eth_header_parse,
+	.rebuild	= eth_rebuild_header,
+	.cache		= eth_header_cache,
+	.cache_update	= eth_header_cache_update,
+};
+
+/**
+ * ether_setup - setup Ethernet network device
+ * @dev: network device
+ * Fill in the fields of the device structure with Ethernet-generic values.
+ */
+void ether_setup(struct net_device *dev)
+{
+	dev->header_ops		= &eth_header_ops;
+#ifdef CONFIG_COMPAT_NET_DEV_OPS
+	dev->change_mtu		= eth_change_mtu;
+	dev->set_mac_address 	= eth_mac_addr;
+	dev->validate_addr	= eth_validate_addr;
+#endif
+	dev->type		= ARPHRD_ETHER;
+	dev->hard_header_len 	= ETH_HLEN;
+	dev->mtu		= ETH_DATA_LEN;
+	dev->addr_len		= ETH_ALEN;
+	dev->tx_queue_len	= 1000;	/* Ethernet wants good queues */
+	dev->flags		= IFF_BROADCAST|IFF_MULTICAST;
+
+	memset(dev->broadcast, 0xFF, ETH_ALEN);
+
+}
+EXPORT_SYMBOL(ether_setup);
+
+/**
+ * alloc_etherdev_mq - Allocates and sets up an Ethernet device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ *	for this Ethernet device
+ * @queue_count: The number of queues this device has.
+ *
+ * Fill in the fields of the device structure with Ethernet-generic
+ * values. Basically does everything except registering the device.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size (sizeof_priv).  A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+
+struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count)
+{
+	return alloc_netdev_mq(sizeof_priv, "eth%d", ether_setup, queue_count);
+}
+EXPORT_SYMBOL(alloc_etherdev_mq);
+
+static size_t _format_mac_addr(char *buf, int buflen,
+				const unsigned char *addr, int len)
+{
+	int i;
+	char *cp = buf;
+
+	for (i = 0; i < len; i++) {
+		cp += scnprintf(cp, buflen - (cp - buf), "%02x", addr[i]);
+		if (i == len - 1)
+			break;
+		cp += strlcpy(cp, ":", buflen - (cp - buf));
+	}
+	return cp - buf;
+}
+
+ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
+{
+	size_t l;
+
+	l = _format_mac_addr(buf, PAGE_SIZE, addr, len);
+	l += strlcpy(buf + l, "\n", PAGE_SIZE - l);
+	return ((ssize_t) l);
+}
+EXPORT_SYMBOL(sysfs_format_mac);
+
+char *print_mac(char *buf, const unsigned char *addr)
+{
+	_format_mac_addr(buf, MAC_BUF_SIZE, addr, ETH_ALEN);
+	return buf;
+}
+EXPORT_SYMBOL(print_mac);
diff --git a/libdde_linux26/contrib/net/ethernet/eth.c b/libdde_linux26/contrib/net/ethernet/eth.c
new file mode 100644
index 00000000..280352ab
--- /dev/null
+++ b/libdde_linux26/contrib/net/ethernet/eth.c
@@ -0,0 +1,407 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Ethernet-type device handling.
+ *
+ * Version:	@(#)eth.c	1.0.7	05/25/93
+ *
+ * Authors:	Ross Biro
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *		Mark Evans, <evansmp@uhura.aston.ac.uk>
+ *		Florian  La Roche, <rzsfl@rz.uni-sb.de>
+ *		Alan Cox, <gw4pts@gw4pts.ampr.org>
+ *
+ * Fixes:
+ *		Mr Linux	: Arp problems
+ *		Alan Cox	: Generic queue tidyup (very tiny here)
+ *		Alan Cox	: eth_header ntohs should be htons
+ *		Alan Cox	: eth_rebuild_header missing an htons and
+ *				  minor other things.
+ *		Tegge		: Arp bug fixes.
+ *		Florian		: Removed many unnecessary functions, code cleanup
+ *				  and changes for new arp and skbuff.
+ *		Alan Cox	: Redid header building to reflect new format.
+ *		Alan Cox	: ARP only when compiled with CONFIG_INET
+ *		Greg Page	: 802.2 and SNAP stuff.
+ *		Alan Cox	: MAC layer pointers/new format.
+ *		Paul Gortmaker	: eth_copy_and_sum shouldn't csum padding.
+ *		Alan Cox	: Protect against forwarding explosions with
+ *				  older network drivers and IFF_ALLMULTI.
+ *	Christer Weinigel	: Better rebuild header message.
+ *             Andrew Morton    : 26Feb01: kill ether_setup() - use netdev_boot_setup().
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/if_ether.h>
+#include <net/dst.h>
+#include <net/arp.h>
+#include <net/sock.h>
+#include <net/ipv6.h>
+#include <net/ip.h>
+#include <net/dsa.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+__setup("ether=", netdev_boot_setup);
+
+/**
+ * eth_header - create the Ethernet header
+ * @skb:	buffer to alter
+ * @dev:	source device
+ * @type:	Ethernet type field
+ * @daddr: destination address (NULL leave destination address)
+ * @saddr: source address (NULL use device source address)
+ * @len:   packet length (<= skb->len)
+ *
+ *
+ * Set the protocol type. For a packet of type ETH_P_802_3 we put the length
+ * in here instead. It is up to the 802.2 layer to carry protocol information.
+ */
+int eth_header(struct sk_buff *skb, struct net_device *dev,
+	       unsigned short type,
+	       const void *daddr, const void *saddr, unsigned len)
+{
+	struct ethhdr *eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
+
+	if (type != ETH_P_802_3)
+		eth->h_proto = htons(type);
+	else
+		eth->h_proto = htons(len);
+
+	/*
+	 *      Set the source hardware address.
+	 */
+
+	if (!saddr)
+		saddr = dev->dev_addr;
+	memcpy(eth->h_source, saddr, ETH_ALEN);
+
+	if (daddr) {
+		memcpy(eth->h_dest, daddr, ETH_ALEN);
+		return ETH_HLEN;
+	}
+
+	/*
+	 *      Anyway, the loopback-device should never use this function...
+	 */
+
+	if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
+		memset(eth->h_dest, 0, ETH_ALEN);
+		return ETH_HLEN;
+	}
+
+	return -ETH_HLEN;
+}
+EXPORT_SYMBOL(eth_header);
+
+/**
+ * eth_rebuild_header- rebuild the Ethernet MAC header.
+ * @skb: socket buffer to update
+ *
+ * This is called after an ARP or IPV6 ndisc it's resolution on this
+ * sk_buff. We now let protocol (ARP) fill in the other fields.
+ *
+ * This routine CANNOT use cached dst->neigh!
+ * Really, it is used only when dst->neigh is wrong.
+ */
+int eth_rebuild_header(struct sk_buff *skb)
+{
+	struct ethhdr *eth = (struct ethhdr *)skb->data;
+	struct net_device *dev = skb->dev;
+
+	switch (eth->h_proto) {
+#ifdef CONFIG_INET
+	case htons(ETH_P_IP):
+		return arp_find(eth->h_dest, skb);
+#endif
+	default:
+		printk(KERN_DEBUG
+		       "%s: unable to resolve type %X addresses.\n",
+		       dev->name, (int)eth->h_proto);
+
+		memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
+		break;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(eth_rebuild_header);
+
+/**
+ * eth_type_trans - determine the packet's protocol ID.
+ * @skb: received socket data
+ * @dev: receiving network device
+ *
+ * The rule here is that we
+ * assume 802.3 if the type field is short enough to be a length.
+ * This is normal practice and works for any 'now in use' protocol.
+ */
+__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ethhdr *eth;
+	unsigned char *rawp;
+
+	skb->dev = dev;
+	skb_reset_mac_header(skb);
+	skb_pull(skb, ETH_HLEN);
+	eth = eth_hdr(skb);
+
+	if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
+		if (!compare_ether_addr_64bits(eth->h_dest, dev->broadcast))
+			skb->pkt_type = PACKET_BROADCAST;
+		else
+			skb->pkt_type = PACKET_MULTICAST;
+	}
+
+	/*
+	 *      This ALLMULTI check should be redundant by 1.4
+	 *      so don't forget to remove it.
+	 *
+	 *      Seems, you forgot to remove it. All silly devices
+	 *      seems to set IFF_PROMISC.
+	 */
+
+	else if (1 /*dev->flags&IFF_PROMISC */ ) {
+		if (unlikely(compare_ether_addr_64bits(eth->h_dest, dev->dev_addr)))
+			skb->pkt_type = PACKET_OTHERHOST;
+	}
+
+	/*
+	 * Some variants of DSA tagging don't have an ethertype field
+	 * at all, so we check here whether one of those tagging
+	 * variants has been configured on the receiving interface,
+	 * and if so, set skb->protocol without looking at the packet.
+	 */
+	if (netdev_uses_dsa_tags(dev))
+		return htons(ETH_P_DSA);
+	if (netdev_uses_trailer_tags(dev))
+		return htons(ETH_P_TRAILER);
+
+	if (ntohs(eth->h_proto) >= 1536)
+		return eth->h_proto;
+
+	rawp = skb->data;
+
+	/*
+	 *      This is a magic hack to spot IPX packets. Older Novell breaks
+	 *      the protocol design and runs IPX over 802.3 without an 802.2 LLC
+	 *      layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
+	 *      won't work for fault tolerant netware but does for the rest.
+	 */
+	if (*(unsigned short *)rawp == 0xFFFF)
+		return htons(ETH_P_802_3);
+
+	/*
+	 *      Real 802.2 LLC
+	 */
+	return htons(ETH_P_802_2);
+}
+EXPORT_SYMBOL(eth_type_trans);
+
+/**
+ * eth_header_parse - extract hardware address from packet
+ * @skb: packet to extract header from
+ * @haddr: destination buffer
+ */
+int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+	const struct ethhdr *eth = eth_hdr(skb);
+	memcpy(haddr, eth->h_source, ETH_ALEN);
+	return ETH_ALEN;
+}
+EXPORT_SYMBOL(eth_header_parse);
+
+/**
+ * eth_header_cache - fill cache entry from neighbour
+ * @neigh: source neighbour
+ * @hh: destination cache entry
+ * Create an Ethernet header template from the neighbour.
+ */
+int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh)
+{
+	__be16 type = hh->hh_type;
+	struct ethhdr *eth;
+	const struct net_device *dev = neigh->dev;
+
+	eth = (struct ethhdr *)
+	    (((u8 *) hh->hh_data) + (HH_DATA_OFF(sizeof(*eth))));
+
+	if (type == htons(ETH_P_802_3))
+		return -1;
+
+	eth->h_proto = type;
+	memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
+	memcpy(eth->h_dest, neigh->ha, ETH_ALEN);
+	hh->hh_len = ETH_HLEN;
+	return 0;
+}
+EXPORT_SYMBOL(eth_header_cache);
+
+/**
+ * eth_header_cache_update - update cache entry
+ * @hh: destination cache entry
+ * @dev: network device
+ * @haddr: new hardware address
+ *
+ * Called by Address Resolution module to notify changes in address.
+ */
+void eth_header_cache_update(struct hh_cache *hh,
+			     const struct net_device *dev,
+			     const unsigned char *haddr)
+{
+	memcpy(((u8 *) hh->hh_data) + HH_DATA_OFF(sizeof(struct ethhdr)),
+	       haddr, ETH_ALEN);
+}
+EXPORT_SYMBOL(eth_header_cache_update);
+
+/**
+ * eth_mac_addr - set new Ethernet hardware address
+ * @dev: network device
+ * @p: socket address
+ * Change hardware address of device.
+ *
+ * This doesn't change hardware matching, so needs to be overridden
+ * for most real devices.
+ */
+int eth_mac_addr(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
+	if (netif_running(dev))
+		return -EBUSY;
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+	return 0;
+}
+EXPORT_SYMBOL(eth_mac_addr);
+
+/**
+ * eth_change_mtu - set new MTU size
+ * @dev: network device
+ * @new_mtu: new Maximum Transfer Unit
+ *
+ * Allow changing MTU size. Needs to be overridden for devices
+ * supporting jumbo frames.
+ */
+int eth_change_mtu(struct net_device *dev, int new_mtu)
+{
+	if (new_mtu < 68 || new_mtu > ETH_DATA_LEN)
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	return 0;
+}
+EXPORT_SYMBOL(eth_change_mtu);
+
+int eth_validate_addr(struct net_device *dev)
+{
+	if (!is_valid_ether_addr(dev->dev_addr))
+		return -EADDRNOTAVAIL;
+
+	return 0;
+}
+EXPORT_SYMBOL(eth_validate_addr);
+
+const struct header_ops eth_header_ops ____cacheline_aligned = {
+	.create		= eth_header,
+	.parse		= eth_header_parse,
+	.rebuild	= eth_rebuild_header,
+	.cache		= eth_header_cache,
+	.cache_update	= eth_header_cache_update,
+};
+
+/**
+ * ether_setup - setup Ethernet network device
+ * @dev: network device
+ * Fill in the fields of the device structure with Ethernet-generic values.
+ */
+void ether_setup(struct net_device *dev)
+{
+	dev->header_ops		= &eth_header_ops;
+#ifdef CONFIG_COMPAT_NET_DEV_OPS
+	dev->change_mtu		= eth_change_mtu;
+	dev->set_mac_address 	= eth_mac_addr;
+	dev->validate_addr	= eth_validate_addr;
+#endif
+	dev->type		= ARPHRD_ETHER;
+	dev->hard_header_len 	= ETH_HLEN;
+	dev->mtu		= ETH_DATA_LEN;
+	dev->addr_len		= ETH_ALEN;
+	dev->tx_queue_len	= 1000;	/* Ethernet wants good queues */
+	dev->flags		= IFF_BROADCAST|IFF_MULTICAST;
+
+	memset(dev->broadcast, 0xFF, ETH_ALEN);
+
+}
+EXPORT_SYMBOL(ether_setup);
+
+/**
+ * alloc_etherdev_mq - Allocates and sets up an Ethernet device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ *	for this Ethernet device
+ * @queue_count: The number of queues this device has.
+ *
+ * Fill in the fields of the device structure with Ethernet-generic
+ * values. Basically does everything except registering the device.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size (sizeof_priv).  A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+
+struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count)
+{
+	return alloc_netdev_mq(sizeof_priv, "eth%d", ether_setup, queue_count);
+}
+EXPORT_SYMBOL(alloc_etherdev_mq);
+
+static size_t _format_mac_addr(char *buf, int buflen,
+				const unsigned char *addr, int len)
+{
+	int i;
+	char *cp = buf;
+
+	for (i = 0; i < len; i++) {
+		cp += scnprintf(cp, buflen - (cp - buf), "%02x", addr[i]);
+		if (i == len - 1)
+			break;
+		cp += strlcpy(cp, ":", buflen - (cp - buf));
+	}
+	return cp - buf;
+}
+
+ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
+{
+	size_t l;
+
+	l = _format_mac_addr(buf, PAGE_SIZE, addr, len);
+	l += strlcpy(buf + l, "\n", PAGE_SIZE - l);
+	return ((ssize_t) l);
+}
+EXPORT_SYMBOL(sysfs_format_mac);
+
+char *print_mac(char *buf, const unsigned char *addr)
+{
+	_format_mac_addr(buf, MAC_BUF_SIZE, addr, ETH_ALEN);
+	return buf;
+}
+EXPORT_SYMBOL(print_mac);
diff --git a/libdde_linux26/contrib/net/netlink/.svn/all-wcprops b/libdde_linux26/contrib/net/netlink/.svn/all-wcprops
new file mode 100644
index 00000000..ce1fb1f4
--- /dev/null
+++ b/libdde_linux26/contrib/net/netlink/.svn/all-wcprops
@@ -0,0 +1,11 @@
+K 25
+svn:wc:ra_dav:version-url
+V 70
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/netlink
+END
+attr.c
+K 25
+svn:wc:ra_dav:version-url
+V 77
+/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/net/netlink/attr.c
+END
diff --git a/libdde_linux26/contrib/net/netlink/.svn/entries b/libdde_linux26/contrib/net/netlink/.svn/entries
new file mode 100644
index 00000000..266f7da2
--- /dev/null
+++ b/libdde_linux26/contrib/net/netlink/.svn/entries
@@ -0,0 +1,62 @@
+9
+
+dir
+465
+http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/contrib/net/netlink
+http://svn.tudos.org/repos/tudos
+
+
+
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+svn:special svn:externals svn:needs-lock
+
+
+
+
+
+
+
+
+
+
+
+a704ac0b-3a55-4d43-a2a9-7be6f07c34fb
+
+attr.c
+file
+
+
+
+
+2009-11-15T17:16:31.000000Z
+947f16bcde5e9f39a59a4ea48b74cc1b
+2009-05-20T14:32:55.606606Z
+455
+l4check
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+11827
+
diff --git a/libdde_linux26/contrib/net/netlink/.svn/format b/libdde_linux26/contrib/net/netlink/.svn/format
new file mode 100644
index 00000000..ec635144
--- /dev/null
+++ b/libdde_linux26/contrib/net/netlink/.svn/format
@@ -0,0 +1 @@
+9
diff --git a/libdde_linux26/contrib/net/netlink/.svn/text-base/attr.c.svn-base b/libdde_linux26/contrib/net/netlink/.svn/text-base/attr.c.svn-base
new file mode 100644
index 00000000..56c3ce7f
--- /dev/null
+++ b/libdde_linux26/contrib/net/netlink/.svn/text-base/attr.c.svn-base
@@ -0,0 +1,473 @@
+/*
+ * NETLINK      Netlink attributes
+ *
+ * 		Authors:	Thomas Graf <tgraf@suug.ch>
+ * 				Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/jiffies.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <net/netlink.h>
+
+static u16 nla_attr_minlen[NLA_TYPE_MAX+1] __read_mostly = {
+	[NLA_U8]	= sizeof(u8),
+	[NLA_U16]	= sizeof(u16),
+	[NLA_U32]	= sizeof(u32),
+	[NLA_U64]	= sizeof(u64),
+	[NLA_NESTED]	= NLA_HDRLEN,
+};
+
+static int validate_nla(struct nlattr *nla, int maxtype,
+			const struct nla_policy *policy)
+{
+	const struct nla_policy *pt;
+	int minlen = 0, attrlen = nla_len(nla), type = nla_type(nla);
+
+	if (type <= 0 || type > maxtype)
+		return 0;
+
+	pt = &policy[type];
+
+	BUG_ON(pt->type > NLA_TYPE_MAX);
+
+	switch (pt->type) {
+	case NLA_FLAG:
+		if (attrlen > 0)
+			return -ERANGE;
+		break;
+
+	case NLA_NUL_STRING:
+		if (pt->len)
+			minlen = min_t(int, attrlen, pt->len + 1);
+		else
+			minlen = attrlen;
+
+		if (!minlen || memchr(nla_data(nla), '\0', minlen) == NULL)
+			return -EINVAL;
+		/* fall through */
+
+	case NLA_STRING:
+		if (attrlen < 1)
+			return -ERANGE;
+
+		if (pt->len) {
+			char *buf = nla_data(nla);
+
+			if (buf[attrlen - 1] == '\0')
+				attrlen--;
+
+			if (attrlen > pt->len)
+				return -ERANGE;
+		}
+		break;
+
+	case NLA_BINARY:
+		if (pt->len && attrlen > pt->len)
+			return -ERANGE;
+		break;
+
+	case NLA_NESTED_COMPAT:
+		if (attrlen < pt->len)
+			return -ERANGE;
+		if (attrlen < NLA_ALIGN(pt->len))
+			break;
+		if (attrlen < NLA_ALIGN(pt->len) + NLA_HDRLEN)
+			return -ERANGE;
+		nla = nla_data(nla) + NLA_ALIGN(pt->len);
+		if (attrlen < NLA_ALIGN(pt->len) + NLA_HDRLEN + nla_len(nla))
+			return -ERANGE;
+		break;
+	case NLA_NESTED:
+		/* a nested attributes is allowed to be empty; if its not,
+		 * it must have a size of at least NLA_HDRLEN.
+		 */
+		if (attrlen == 0)
+			break;
+	default:
+		if (pt->len)
+			minlen = pt->len;
+		else if (pt->type != NLA_UNSPEC)
+			minlen = nla_attr_minlen[pt->type];
+
+		if (attrlen < minlen)
+			return -ERANGE;
+	}
+
+	return 0;
+}
+
+/**
+ * nla_validate - Validate a stream of attributes
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @maxtype: maximum attribute type to be expected
+ * @policy: validation policy
+ *
+ * Validates all attributes in the specified attribute stream against the
+ * specified policy. Attributes with a type exceeding maxtype will be
+ * ignored. See documenation of struct nla_policy for more details.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int nla_validate(struct nlattr *head, int len, int maxtype,
+		 const struct nla_policy *policy)
+{
+	struct nlattr *nla;
+	int rem, err;
+
+	nla_for_each_attr(nla, head, len, rem) {
+		err = validate_nla(nla, maxtype, policy);
+		if (err < 0)
+			goto errout;
+	}
+
+	err = 0;
+errout:
+	return err;
+}
+
+/**
+ * nla_parse - Parse a stream of attributes into a tb buffer
+ * @tb: destination array with maxtype+1 elements
+ * @maxtype: maximum attribute type to be expected
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @policy: validation policy
+ *
+ * Parses a stream of attributes and stores a pointer to each attribute in
+ * the tb array accessable via the attribute type. Attributes with a type
+ * exceeding maxtype will be silently ignored for backwards compatibility
+ * reasons. policy may be set to NULL if no validation is required.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head, int len,
+	      const struct nla_policy *policy)
+{
+	struct nlattr *nla;
+	int rem, err;
+
+	memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1));
+
+	nla_for_each_attr(nla, head, len, rem) {
+		u16 type = nla_type(nla);
+
+		if (type > 0 && type <= maxtype) {
+			if (policy) {
+				err = validate_nla(nla, maxtype, policy);
+				if (err < 0)
+					goto errout;
+			}
+
+			tb[type] = nla;
+		}
+	}
+
+	if (unlikely(rem > 0))
+		printk(KERN_WARNING "netlink: %d bytes leftover after parsing "
+		       "attributes.\n", rem);
+
+	err = 0;
+errout:
+	return err;
+}
+
+/**
+ * nla_find - Find a specific attribute in a stream of attributes
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @attrtype: type of attribute to look for
+ *
+ * Returns the first attribute in the stream matching the specified type.
+ */
+struct nlattr *nla_find(struct nlattr *head, int len, int attrtype)
+{
+	struct nlattr *nla;
+	int rem;
+
+	nla_for_each_attr(nla, head, len, rem)
+		if (nla_type(nla) == attrtype)
+			return nla;
+
+	return NULL;
+}
+
+/**
+ * nla_strlcpy - Copy string attribute payload into a sized buffer
+ * @dst: where to copy the string to
+ * @nla: attribute to copy the string from
+ * @dstsize: size of destination buffer
+ *
+ * Copies at most dstsize - 1 bytes into the destination buffer.
+ * The result is always a valid NUL-terminated string. Unlike
+ * strlcpy the destination buffer is always padded out.
+ *
+ * Returns the length of the source buffer.
+ */
+size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize)
+{
+	size_t srclen = nla_len(nla);
+	char *src = nla_data(nla);
+
+	if (srclen > 0 && src[srclen - 1] == '\0')
+		srclen--;
+
+	if (dstsize > 0) {
+		size_t len = (srclen >= dstsize) ? dstsize - 1 : srclen;
+
+		memset(dst, 0, dstsize);
+		memcpy(dst, src, len);
+	}
+
+	return srclen;
+}
+
+/**
+ * nla_memcpy - Copy a netlink attribute into another memory area
+ * @dest: where to copy to memcpy
+ * @src: netlink attribute to copy from
+ * @count: size of the destination area
+ *
+ * Note: The number of bytes copied is limited by the length of
+ *       attribute's payload. memcpy
+ *
+ * Returns the number of bytes copied.
+ */
+int nla_memcpy(void *dest, const struct nlattr *src, int count)
+{
+	int minlen = min_t(int, count, nla_len(src));
+
+	memcpy(dest, nla_data(src), minlen);
+
+	return minlen;
+}
+
+/**
+ * nla_memcmp - Compare an attribute with sized memory area
+ * @nla: netlink attribute
+ * @data: memory area
+ * @size: size of memory area
+ */
+int nla_memcmp(const struct nlattr *nla, const void *data,
+			     size_t size)
+{
+	int d = nla_len(nla) - size;
+
+	if (d == 0)
+		d = memcmp(nla_data(nla), data, size);
+
+	return d;
+}
+
+/**
+ * nla_strcmp - Compare a string attribute against a string
+ * @nla: netlink string attribute
+ * @str: another string
+ */
+int nla_strcmp(const struct nlattr *nla, const char *str)
+{
+	int len = strlen(str) + 1;
+	int d = nla_len(nla) - len;
+
+	if (d == 0)
+		d = memcmp(nla_data(nla), str, len);
+
+	return d;
+}
+
+/**
+ * __nla_reserve - reserve room for attribute on the skb
+ * @skb: socket buffer to reserve room on
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ *
+ * Adds a netlink attribute header to a socket buffer and reserves
+ * room for the payload but does not copy it.
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the attribute header and payload.
+ */
+struct nlattr *__nla_reserve(struct sk_buff *skb, int attrtype, int attrlen)
+{
+	struct nlattr *nla;
+
+	nla = (struct nlattr *) skb_put(skb, nla_total_size(attrlen));
+	nla->nla_type = attrtype;
+	nla->nla_len = nla_attr_size(attrlen);
+
+	memset((unsigned char *) nla + nla->nla_len, 0, nla_padlen(attrlen));
+
+	return nla;
+}
+
+/**
+ * __nla_reserve_nohdr - reserve room for attribute without header
+ * @skb: socket buffer to reserve room on
+ * @attrlen: length of attribute payload
+ *
+ * Reserves room for attribute payload without a header.
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the payload.
+ */
+void *__nla_reserve_nohdr(struct sk_buff *skb, int attrlen)
+{
+	void *start;
+
+	start = skb_put(skb, NLA_ALIGN(attrlen));
+	memset(start, 0, NLA_ALIGN(attrlen));
+
+	return start;
+}
+
+/**
+ * nla_reserve - reserve room for attribute on the skb
+ * @skb: socket buffer to reserve room on
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ *
+ * Adds a netlink attribute header to a socket buffer and reserves
+ * room for the payload but does not copy it.
+ *
+ * Returns NULL if the tailroom of the skb is insufficient to store
+ * the attribute header and payload.
+ */
+struct nlattr *nla_reserve(struct sk_buff *skb, int attrtype, int attrlen)
+{
+	if (unlikely(skb_tailroom(skb) < nla_total_size(attrlen)))
+		return NULL;
+
+	return __nla_reserve(skb, attrtype, attrlen);
+}
+
+/**
+ * nla_reserve_nohdr - reserve room for attribute without header
+ * @skb: socket buffer to reserve room on
+ * @attrlen: length of attribute payload
+ *
+ * Reserves room for attribute payload without a header.
+ *
+ * Returns NULL if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+void *nla_reserve_nohdr(struct sk_buff *skb, int attrlen)
+{
+	if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+		return NULL;
+
+	return __nla_reserve_nohdr(skb, attrlen);
+}
+
+/**
+ * __nla_put - Add a netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the attribute header and payload.
+ */
+void __nla_put(struct sk_buff *skb, int attrtype, int attrlen,
+			     const void *data)
+{
+	struct nlattr *nla;
+
+	nla = __nla_reserve(skb, attrtype, attrlen);
+	memcpy(nla_data(nla), data, attrlen);
+}
+
+/**
+ * __nla_put_nohdr - Add a netlink attribute without header
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the attribute payload.
+ */
+void __nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
+{
+	void *start;
+
+	start = __nla_reserve_nohdr(skb, attrlen);
+	memcpy(start, data, attrlen);
+}
+
+/**
+ * nla_put - Add a netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute header and payload.
+ */
+int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
+{
+	if (unlikely(skb_tailroom(skb) < nla_total_size(attrlen)))
+		return -EMSGSIZE;
+
+	__nla_put(skb, attrtype, attrlen, data);
+	return 0;
+}
+
+/**
+ * nla_put_nohdr - Add a netlink attribute without header
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+int nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
+{
+	if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+		return -EMSGSIZE;
+
+	__nla_put_nohdr(skb, attrlen, data);
+	return 0;
+}
+
+/**
+ * nla_append - Add a netlink attribute without header or padding
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+int nla_append(struct sk_buff *skb, int attrlen, const void *data)
+{
+	if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+		return -EMSGSIZE;
+
+	memcpy(skb_put(skb, attrlen), data, attrlen);
+	return 0;
+}
+
+EXPORT_SYMBOL(nla_validate);
+EXPORT_SYMBOL(nla_parse);
+EXPORT_SYMBOL(nla_find);
+EXPORT_SYMBOL(nla_strlcpy);
+EXPORT_SYMBOL(__nla_reserve);
+EXPORT_SYMBOL(__nla_reserve_nohdr);
+EXPORT_SYMBOL(nla_reserve);
+EXPORT_SYMBOL(nla_reserve_nohdr);
+EXPORT_SYMBOL(__nla_put);
+EXPORT_SYMBOL(__nla_put_nohdr);
+EXPORT_SYMBOL(nla_put);
+EXPORT_SYMBOL(nla_put_nohdr);
+EXPORT_SYMBOL(nla_memcpy);
+EXPORT_SYMBOL(nla_memcmp);
+EXPORT_SYMBOL(nla_strcmp);
+EXPORT_SYMBOL(nla_append);
diff --git a/libdde_linux26/contrib/net/netlink/attr.c b/libdde_linux26/contrib/net/netlink/attr.c
new file mode 100644
index 00000000..56c3ce7f
--- /dev/null
+++ b/libdde_linux26/contrib/net/netlink/attr.c
@@ -0,0 +1,473 @@
+/*
+ * NETLINK      Netlink attributes
+ *
+ * 		Authors:	Thomas Graf <tgraf@suug.ch>
+ * 				Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/jiffies.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <net/netlink.h>
+
+static u16 nla_attr_minlen[NLA_TYPE_MAX+1] __read_mostly = {
+	[NLA_U8]	= sizeof(u8),
+	[NLA_U16]	= sizeof(u16),
+	[NLA_U32]	= sizeof(u32),
+	[NLA_U64]	= sizeof(u64),
+	[NLA_NESTED]	= NLA_HDRLEN,
+};
+
+static int validate_nla(struct nlattr *nla, int maxtype,
+			const struct nla_policy *policy)
+{
+	const struct nla_policy *pt;
+	int minlen = 0, attrlen = nla_len(nla), type = nla_type(nla);
+
+	if (type <= 0 || type > maxtype)
+		return 0;
+
+	pt = &policy[type];
+
+	BUG_ON(pt->type > NLA_TYPE_MAX);
+
+	switch (pt->type) {
+	case NLA_FLAG:
+		if (attrlen > 0)
+			return -ERANGE;
+		break;
+
+	case NLA_NUL_STRING:
+		if (pt->len)
+			minlen = min_t(int, attrlen, pt->len + 1);
+		else
+			minlen = attrlen;
+
+		if (!minlen || memchr(nla_data(nla), '\0', minlen) == NULL)
+			return -EINVAL;
+		/* fall through */
+
+	case NLA_STRING:
+		if (attrlen < 1)
+			return -ERANGE;
+
+		if (pt->len) {
+			char *buf = nla_data(nla);
+
+			if (buf[attrlen - 1] == '\0')
+				attrlen--;
+
+			if (attrlen > pt->len)
+				return -ERANGE;
+		}
+		break;
+
+	case NLA_BINARY:
+		if (pt->len && attrlen > pt->len)
+			return -ERANGE;
+		break;
+
+	case NLA_NESTED_COMPAT:
+		if (attrlen < pt->len)
+			return -ERANGE;
+		if (attrlen < NLA_ALIGN(pt->len))
+			break;
+		if (attrlen < NLA_ALIGN(pt->len) + NLA_HDRLEN)
+			return -ERANGE;
+		nla = nla_data(nla) + NLA_ALIGN(pt->len);
+		if (attrlen < NLA_ALIGN(pt->len) + NLA_HDRLEN + nla_len(nla))
+			return -ERANGE;
+		break;
+	case NLA_NESTED:
+		/* a nested attributes is allowed to be empty; if its not,
+		 * it must have a size of at least NLA_HDRLEN.
+		 */
+		if (attrlen == 0)
+			break;
+	default:
+		if (pt->len)
+			minlen = pt->len;
+		else if (pt->type != NLA_UNSPEC)
+			minlen = nla_attr_minlen[pt->type];
+
+		if (attrlen < minlen)
+			return -ERANGE;
+	}
+
+	return 0;
+}
+
+/**
+ * nla_validate - Validate a stream of attributes
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @maxtype: maximum attribute type to be expected
+ * @policy: validation policy
+ *
+ * Validates all attributes in the specified attribute stream against the
+ * specified policy. Attributes with a type exceeding maxtype will be
+ * ignored. See documenation of struct nla_policy for more details.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int nla_validate(struct nlattr *head, int len, int maxtype,
+		 const struct nla_policy *policy)
+{
+	struct nlattr *nla;
+	int rem, err;
+
+	nla_for_each_attr(nla, head, len, rem) {
+		err = validate_nla(nla, maxtype, policy);
+		if (err < 0)
+			goto errout;
+	}
+
+	err = 0;
+errout:
+	return err;
+}
+
+/**
+ * nla_parse - Parse a stream of attributes into a tb buffer
+ * @tb: destination array with maxtype+1 elements
+ * @maxtype: maximum attribute type to be expected
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @policy: validation policy
+ *
+ * Parses a stream of attributes and stores a pointer to each attribute in
+ * the tb array accessable via the attribute type. Attributes with a type
+ * exceeding maxtype will be silently ignored for backwards compatibility
+ * reasons. policy may be set to NULL if no validation is required.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head, int len,
+	      const struct nla_policy *policy)
+{
+	struct nlattr *nla;
+	int rem, err;
+
+	memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1));
+
+	nla_for_each_attr(nla, head, len, rem) {
+		u16 type = nla_type(nla);
+
+		if (type > 0 && type <= maxtype) {
+			if (policy) {
+				err = validate_nla(nla, maxtype, policy);
+				if (err < 0)
+					goto errout;
+			}
+
+			tb[type] = nla;
+		}
+	}
+
+	if (unlikely(rem > 0))
+		printk(KERN_WARNING "netlink: %d bytes leftover after parsing "
+		       "attributes.\n", rem);
+
+	err = 0;
+errout:
+	return err;
+}
+
+/**
+ * nla_find - Find a specific attribute in a stream of attributes
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @attrtype: type of attribute to look for
+ *
+ * Returns the first attribute in the stream matching the specified type.
+ */
+struct nlattr *nla_find(struct nlattr *head, int len, int attrtype)
+{
+	struct nlattr *nla;
+	int rem;
+
+	nla_for_each_attr(nla, head, len, rem)
+		if (nla_type(nla) == attrtype)
+			return nla;
+
+	return NULL;
+}
+
+/**
+ * nla_strlcpy - Copy string attribute payload into a sized buffer
+ * @dst: where to copy the string to
+ * @nla: attribute to copy the string from
+ * @dstsize: size of destination buffer
+ *
+ * Copies at most dstsize - 1 bytes into the destination buffer.
+ * The result is always a valid NUL-terminated string. Unlike
+ * strlcpy the destination buffer is always padded out.
+ *
+ * Returns the length of the source buffer.
+ */
+size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize)
+{
+	size_t srclen = nla_len(nla);
+	char *src = nla_data(nla);
+
+	if (srclen > 0 && src[srclen - 1] == '\0')
+		srclen--;
+
+	if (dstsize > 0) {
+		size_t len = (srclen >= dstsize) ? dstsize - 1 : srclen;
+
+		memset(dst, 0, dstsize);
+		memcpy(dst, src, len);
+	}
+
+	return srclen;
+}
+
+/**
+ * nla_memcpy - Copy a netlink attribute into another memory area
+ * @dest: where to copy to memcpy
+ * @src: netlink attribute to copy from
+ * @count: size of the destination area
+ *
+ * Note: The number of bytes copied is limited by the length of
+ *       attribute's payload. memcpy
+ *
+ * Returns the number of bytes copied.
+ */
+int nla_memcpy(void *dest, const struct nlattr *src, int count)
+{
+	int minlen = min_t(int, count, nla_len(src));
+
+	memcpy(dest, nla_data(src), minlen);
+
+	return minlen;
+}
+
+/**
+ * nla_memcmp - Compare an attribute with sized memory area
+ * @nla: netlink attribute
+ * @data: memory area
+ * @size: size of memory area
+ */
+int nla_memcmp(const struct nlattr *nla, const void *data,
+			     size_t size)
+{
+	int d = nla_len(nla) - size;
+
+	if (d == 0)
+		d = memcmp(nla_data(nla), data, size);
+
+	return d;
+}
+
+/**
+ * nla_strcmp - Compare a string attribute against a string
+ * @nla: netlink string attribute
+ * @str: another string
+ */
+int nla_strcmp(const struct nlattr *nla, const char *str)
+{
+	int len = strlen(str) + 1;
+	int d = nla_len(nla) - len;
+
+	if (d == 0)
+		d = memcmp(nla_data(nla), str, len);
+
+	return d;
+}
+
+/**
+ * __nla_reserve - reserve room for attribute on the skb
+ * @skb: socket buffer to reserve room on
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ *
+ * Adds a netlink attribute header to a socket buffer and reserves
+ * room for the payload but does not copy it.
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the attribute header and payload.
+ */
+struct nlattr *__nla_reserve(struct sk_buff *skb, int attrtype, int attrlen)
+{
+	struct nlattr *nla;
+
+	nla = (struct nlattr *) skb_put(skb, nla_total_size(attrlen));
+	nla->nla_type = attrtype;
+	nla->nla_len = nla_attr_size(attrlen);
+
+	memset((unsigned char *) nla + nla->nla_len, 0, nla_padlen(attrlen));
+
+	return nla;
+}
+
+/**
+ * __nla_reserve_nohdr - reserve room for attribute without header
+ * @skb: socket buffer to reserve room on
+ * @attrlen: length of attribute payload
+ *
+ * Reserves room for attribute payload without a header.
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the payload.
+ */
+void *__nla_reserve_nohdr(struct sk_buff *skb, int attrlen)
+{
+	void *start;
+
+	start = skb_put(skb, NLA_ALIGN(attrlen));
+	memset(start, 0, NLA_ALIGN(attrlen));
+
+	return start;
+}
+
+/**
+ * nla_reserve - reserve room for attribute on the skb
+ * @skb: socket buffer to reserve room on
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ *
+ * Adds a netlink attribute header to a socket buffer and reserves
+ * room for the payload but does not copy it.
+ *
+ * Returns NULL if the tailroom of the skb is insufficient to store
+ * the attribute header and payload.
+ */
+struct nlattr *nla_reserve(struct sk_buff *skb, int attrtype, int attrlen)
+{
+	if (unlikely(skb_tailroom(skb) < nla_total_size(attrlen)))
+		return NULL;
+
+	return __nla_reserve(skb, attrtype, attrlen);
+}
+
+/**
+ * nla_reserve_nohdr - reserve room for attribute without header
+ * @skb: socket buffer to reserve room on
+ * @attrlen: length of attribute payload
+ *
+ * Reserves room for attribute payload without a header.
+ *
+ * Returns NULL if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+void *nla_reserve_nohdr(struct sk_buff *skb, int attrlen)
+{
+	if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+		return NULL;
+
+	return __nla_reserve_nohdr(skb, attrlen);
+}
+
+/**
+ * __nla_put - Add a netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the attribute header and payload.
+ */
+void __nla_put(struct sk_buff *skb, int attrtype, int attrlen,
+			     const void *data)
+{
+	struct nlattr *nla;
+
+	nla = __nla_reserve(skb, attrtype, attrlen);
+	memcpy(nla_data(nla), data, attrlen);
+}
+
+/**
+ * __nla_put_nohdr - Add a netlink attribute without header
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for the attribute payload.
+ */
+void __nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
+{
+	void *start;
+
+	start = __nla_reserve_nohdr(skb, attrlen);
+	memcpy(start, data, attrlen);
+}
+
+/**
+ * nla_put - Add a netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute header and payload.
+ */
+int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
+{
+	if (unlikely(skb_tailroom(skb) < nla_total_size(attrlen)))
+		return -EMSGSIZE;
+
+	__nla_put(skb, attrtype, attrlen, data);
+	return 0;
+}
+
+/**
+ * nla_put_nohdr - Add a netlink attribute without header
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+int nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
+{
+	if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+		return -EMSGSIZE;
+
+	__nla_put_nohdr(skb, attrlen, data);
+	return 0;
+}
+
+/**
+ * nla_append - Add a netlink attribute without header or padding
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+int nla_append(struct sk_buff *skb, int attrlen, const void *data)
+{
+	if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+		return -EMSGSIZE;
+
+	memcpy(skb_put(skb, attrlen), data, attrlen);
+	return 0;
+}
+
+EXPORT_SYMBOL(nla_validate);
+EXPORT_SYMBOL(nla_parse);
+EXPORT_SYMBOL(nla_find);
+EXPORT_SYMBOL(nla_strlcpy);
+EXPORT_SYMBOL(__nla_reserve);
+EXPORT_SYMBOL(__nla_reserve_nohdr);
+EXPORT_SYMBOL(nla_reserve);
+EXPORT_SYMBOL(nla_reserve_nohdr);
+EXPORT_SYMBOL(__nla_put);
+EXPORT_SYMBOL(__nla_put_nohdr);
+EXPORT_SYMBOL(nla_put);
+EXPORT_SYMBOL(nla_put_nohdr);
+EXPORT_SYMBOL(nla_memcpy);
+EXPORT_SYMBOL(nla_memcmp);
+EXPORT_SYMBOL(nla_strcmp);
+EXPORT_SYMBOL(nla_append);
diff --git a/libdde_linux26/contrib/net/sched/.svn/all-wcprops b/libdde_linux26/contrib/net/sched/.svn/all-wcprops
new file mode 100644
index 00000000..1afccd56
--- /dev/null
+++ b/libdde_linux26/contrib/net/sched/.svn/all-wcprops
@@ -0,0 +1,5 @@
+K 25
+svn:wc:ra_dav:version-url
+V 68
+/repos/tudos/!svn/ver/174/trunk/l4/pkg/dde/linux26/contrib/net/sched
+END
diff --git a/libdde_linux26/contrib/net/sched/.svn/entries b/libdde_linux26/contrib/net/sched/.svn/entries
new file mode 100644
index 00000000..71f93f72
--- /dev/null
+++ b/libdde_linux26/contrib/net/sched/.svn/entries
@@ -0,0 +1,28 @@
+9
+
+dir
+465
+http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/contrib/net/sched
+http://svn.tudos.org/repos/tudos
+
+
+
+2007-09-08T19:44:13.897747Z
+174
+l4check
+
+
+svn:special svn:externals svn:needs-lock
+
+
+
+
+
+
+
+
+
+
+
+a704ac0b-3a55-4d43-a2a9-7be6f07c34fb
+
diff --git a/libdde_linux26/contrib/net/sched/.svn/format b/libdde_linux26/contrib/net/sched/.svn/format
new file mode 100644
index 00000000..ec635144
--- /dev/null
+++ b/libdde_linux26/contrib/net/sched/.svn/format
@@ -0,0 +1 @@
+9
diff --git a/libdde_linux26/contrib/net/socket.c b/libdde_linux26/contrib/net/socket.c
new file mode 100644
index 00000000..35dd7371
--- /dev/null
+++ b/libdde_linux26/contrib/net/socket.c
@@ -0,0 +1,2406 @@
+/*
+ * NET		An implementation of the SOCKET network access protocol.
+ *
+ * Version:	@(#)socket.c	1.1.93	18/02/95
+ *
+ * Authors:	Orest Zborowski, <obz@Kodak.COM>
+ *		Ross Biro
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *
+ * Fixes:
+ *		Anonymous	:	NOTSOCK/BADF cleanup. Error fix in
+ *					shutdown()
+ *		Alan Cox	:	verify_area() fixes
+ *		Alan Cox	:	Removed DDI
+ *		Jonathan Kamens	:	SOCK_DGRAM reconnect bug
+ *		Alan Cox	:	Moved a load of checks to the very
+ *					top level.
+ *		Alan Cox	:	Move address structures to/from user
+ *					mode above the protocol layers.
+ *		Rob Janssen	:	Allow 0 length sends.
+ *		Alan Cox	:	Asynchronous I/O support (cribbed from the
+ *					tty drivers).
+ *		Niibe Yutaka	:	Asynchronous I/O for writes (4.4BSD style)
+ *		Jeff Uphoff	:	Made max number of sockets command-line
+ *					configurable.
+ *		Matti Aarnio	:	Made the number of sockets dynamic,
+ *					to be allocated when needed, and mr.
+ *					Uphoff's max is used as max to be
+ *					allowed to allocate.
+ *		Linus		:	Argh. removed all the socket allocation
+ *					altogether: it's in the inode now.
+ *		Alan Cox	:	Made sock_alloc()/sock_release() public
+ *					for NetROM and future kernel nfsd type
+ *					stuff.
+ *		Alan Cox	:	sendmsg/recvmsg basics.
+ *		Tom Dyas	:	Export net symbols.
+ *		Marcin Dalecki	:	Fixed problems with CONFIG_NET="n".
+ *		Alan Cox	:	Added thread locking to sys_* calls
+ *					for sockets. May have errors at the
+ *					moment.
+ *		Kevin Buhr	:	Fixed the dumb errors in the above.
+ *		Andi Kleen	:	Some small cleanups, optimizations,
+ *					and fixed a copy_from_user() bug.
+ *		Tigran Aivazian	:	sys_send(args) calls sys_sendto(args, NULL, 0)
+ *		Tigran Aivazian	:	Made listen(2) backlog sanity checks
+ *					protocol-independent
+ *
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *
+ *	This module is effectively the top level interface to the BSD socket
+ *	paradigm.
+ *
+ *	Based upon Swansea University Computer Society NET3.039
+ */
+
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/file.h>
+#include <linux/net.h>
+#include <linux/interrupt.h>
+#include <linux/thread_info.h>
+#include <linux/rcupdate.h>
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/mutex.h>
+#include <linux/wanrouter.h>
+#include <linux/if_bridge.h>
+#include <linux/if_frad.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/cache.h>
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/mount.h>
+#include <linux/security.h>
+#include <linux/syscalls.h>
+#include <linux/compat.h>
+#include <linux/kmod.h>
+#include <linux/audit.h>
+#include <linux/wireless.h>
+#include <linux/nsproxy.h>
+
+#include <asm/uaccess.h>
+#include <asm/unistd.h>
+
+#include <net/compat.h>
+#include <net/wext.h>
+
+#include <net/sock.h>
+#include <linux/netfilter.h>
+
+static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
+static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
+			 unsigned long nr_segs, loff_t pos);
+static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
+			  unsigned long nr_segs, loff_t pos);
+static int sock_mmap(struct file *file, struct vm_area_struct *vma);
+
+static int sock_close(struct inode *inode, struct file *file);
+static unsigned int sock_poll(struct file *file,
+			      struct poll_table_struct *wait);
+static long sock_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+static long compat_sock_ioctl(struct file *file,
+			      unsigned int cmd, unsigned long arg);
+#endif
+static int sock_fasync(int fd, struct file *filp, int on);
+static ssize_t sock_sendpage(struct file *file, struct page *page,
+			     int offset, size_t size, loff_t *ppos, int more);
+static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
+			        struct pipe_inode_info *pipe, size_t len,
+				unsigned int flags);
+
+/*
+ *	Socket files have a set of 'special' operations as well as the generic file ones. These don't appear
+ *	in the operation structures but are done directly via the socketcall() multiplexor.
+ */
+
+static const struct file_operations socket_file_ops = {
+	.owner =	THIS_MODULE,
+	.llseek =	no_llseek,
+	.aio_read =	sock_aio_read,
+	.aio_write =	sock_aio_write,
+	.poll =		sock_poll,
+	.unlocked_ioctl = sock_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = compat_sock_ioctl,
+#endif
+	.mmap =		sock_mmap,
+	.open =		sock_no_open,	/* special open code to disallow open via /proc */
+	.release =	sock_close,
+	.fasync =	sock_fasync,
+	.sendpage =	sock_sendpage,
+	.splice_write = generic_splice_sendpage,
+	.splice_read =	sock_splice_read,
+};
+
+/*
+ *	The protocol list. Each protocol is registered in here.
+ */
+
+static DEFINE_SPINLOCK(net_family_lock);
+static const struct net_proto_family *net_families[NPROTO] __read_mostly;
+
+/*
+ *	Statistics counters of the socket lists
+ */
+
+static DEFINE_PER_CPU(int, sockets_in_use) = 0;
+
+/*
+ * Support routines.
+ * Move socket addresses back and forth across the kernel/user
+ * divide and look after the messy bits.
+ */
+
+#define MAX_SOCK_ADDR	128		/* 108 for Unix domain -
+					   16 for IP, 16 for IPX,
+					   24 for IPv6,
+					   about 80 for AX.25
+					   must be at least one bigger than
+					   the AF_UNIX size (see net/unix/af_unix.c
+					   :unix_mkname()).
+					 */
+
+/**
+ *	move_addr_to_kernel	-	copy a socket address into kernel space
+ *	@uaddr: Address in user space
+ *	@kaddr: Address in kernel space
+ *	@ulen: Length in user space
+ *
+ *	The address is copied into kernel space. If the provided address is
+ *	too long an error code of -EINVAL is returned. If the copy gives
+ *	invalid addresses -EFAULT is returned. On a success 0 is returned.
+ */
+
+int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr)
+{
+	if (ulen < 0 || ulen > sizeof(struct sockaddr_storage))
+		return -EINVAL;
+	if (ulen == 0)
+		return 0;
+	if (copy_from_user(kaddr, uaddr, ulen))
+		return -EFAULT;
+	return audit_sockaddr(ulen, kaddr);
+}
+
+/**
+ *	move_addr_to_user	-	copy an address to user space
+ *	@kaddr: kernel space address
+ *	@klen: length of address in kernel
+ *	@uaddr: user space address
+ *	@ulen: pointer to user length field
+ *
+ *	The value pointed to by ulen on entry is the buffer length available.
+ *	This is overwritten with the buffer space used. -EINVAL is returned
+ *	if an overlong buffer is specified or a negative buffer size. -EFAULT
+ *	is returned if either the buffer or the length field are not
+ *	accessible.
+ *	After copying the data up to the limit the user specifies, the true
+ *	length of the data is written over the length limit the user
+ *	specified. Zero is returned for a success.
+ */
+
+int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr,
+		      int __user *ulen)
+{
+	int err;
+	int len;
+
+	err = get_user(len, ulen);
+	if (err)
+		return err;
+	if (len > klen)
+		len = klen;
+	if (len < 0 || len > sizeof(struct sockaddr_storage))
+		return -EINVAL;
+	if (len) {
+		if (audit_sockaddr(klen, kaddr))
+			return -ENOMEM;
+		if (copy_to_user(uaddr, kaddr, len))
+			return -EFAULT;
+	}
+	/*
+	 *      "fromlen shall refer to the value before truncation.."
+	 *                      1003.1g
+	 */
+	return __put_user(klen, ulen);
+}
+
+#define SOCKFS_MAGIC 0x534F434B
+
+static struct kmem_cache *sock_inode_cachep __read_mostly;
+
+static struct inode *sock_alloc_inode(struct super_block *sb)
+{
+	struct socket_alloc *ei;
+
+	ei = kmem_cache_alloc(sock_inode_cachep, GFP_KERNEL);
+	if (!ei)
+		return NULL;
+	init_waitqueue_head(&ei->socket.wait);
+
+	ei->socket.fasync_list = NULL;
+	ei->socket.state = SS_UNCONNECTED;
+	ei->socket.flags = 0;
+	ei->socket.ops = NULL;
+	ei->socket.sk = NULL;
+	ei->socket.file = NULL;
+
+	return &ei->vfs_inode;
+}
+
+static void sock_destroy_inode(struct inode *inode)
+{
+	kmem_cache_free(sock_inode_cachep,
+			container_of(inode, struct socket_alloc, vfs_inode));
+}
+
+static void init_once(void *foo)
+{
+	struct socket_alloc *ei = (struct socket_alloc *)foo;
+
+	inode_init_once(&ei->vfs_inode);
+}
+
+static int init_inodecache(void)
+{
+	sock_inode_cachep = kmem_cache_create("sock_inode_cache",
+					      sizeof(struct socket_alloc),
+					      0,
+					      (SLAB_HWCACHE_ALIGN |
+					       SLAB_RECLAIM_ACCOUNT |
+					       SLAB_MEM_SPREAD),
+					      init_once);
+	if (sock_inode_cachep == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
+static struct super_operations sockfs_ops = {
+	.alloc_inode =	sock_alloc_inode,
+	.destroy_inode =sock_destroy_inode,
+	.statfs =	simple_statfs,
+};
+
+static int sockfs_get_sb(struct file_system_type *fs_type,
+			 int flags, const char *dev_name, void *data,
+			 struct vfsmount *mnt)
+{
+	return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC,
+			     mnt);
+}
+
+static struct vfsmount *sock_mnt __read_mostly;
+
+static struct file_system_type sock_fs_type = {
+	.name =		"sockfs",
+	.get_sb =	sockfs_get_sb,
+	.kill_sb =	kill_anon_super,
+};
+
+static int sockfs_delete_dentry(struct dentry *dentry)
+{
+	/*
+	 * At creation time, we pretended this dentry was hashed
+	 * (by clearing DCACHE_UNHASHED bit in d_flags)
+	 * At delete time, we restore the truth : not hashed.
+	 * (so that dput() can proceed correctly)
+	 */
+	dentry->d_flags |= DCACHE_UNHASHED;
+	return 0;
+}
+
+/*
+ * sockfs_dname() is called from d_path().
+ */
+static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen)
+{
+	return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]",
+				dentry->d_inode->i_ino);
+}
+
+static struct dentry_operations sockfs_dentry_operations = {
+	.d_delete = sockfs_delete_dentry,
+	.d_dname  = sockfs_dname,
+};
+
+/*
+ *	Obtains the first available file descriptor and sets it up for use.
+ *
+ *	These functions create file structures and maps them to fd space
+ *	of the current process. On success it returns file descriptor
+ *	and file struct implicitly stored in sock->file.
+ *	Note that another thread may close file descriptor before we return
+ *	from this function. We use the fact that now we do not refer
+ *	to socket after mapping. If one day we will need it, this
+ *	function will increment ref. count on file by 1.
+ *
+ *	In any case returned fd MAY BE not valid!
+ *	This race condition is unavoidable
+ *	with shared fd spaces, we cannot solve it inside kernel,
+ *	but we take care of internal coherence yet.
+ */
+
+static int sock_alloc_fd(struct file **filep, int flags)
+{
+	int fd;
+
+	fd = get_unused_fd_flags(flags);
+	if (likely(fd >= 0)) {
+		struct file *file = get_empty_filp();
+
+		*filep = file;
+		if (unlikely(!file)) {
+			put_unused_fd(fd);
+			return -ENFILE;
+		}
+	} else
+		*filep = NULL;
+	return fd;
+}
+
+static int sock_attach_fd(struct socket *sock, struct file *file, int flags)
+{
+	struct dentry *dentry;
+	struct qstr name = { .name = "" };
+
+	dentry = d_alloc(sock_mnt->mnt_sb->s_root, &name);
+	if (unlikely(!dentry))
+		return -ENOMEM;
+
+	dentry->d_op = &sockfs_dentry_operations;
+	/*
+	 * We dont want to push this dentry into global dentry hash table.
+	 * We pretend dentry is already hashed, by unsetting DCACHE_UNHASHED
+	 * This permits a working /proc/$pid/fd/XXX on sockets
+	 */
+	dentry->d_flags &= ~DCACHE_UNHASHED;
+	d_instantiate(dentry, SOCK_INODE(sock));
+
+	sock->file = file;
+	init_file(file, sock_mnt, dentry, FMODE_READ | FMODE_WRITE,
+		  &socket_file_ops);
+	SOCK_INODE(sock)->i_fop = &socket_file_ops;
+	file->f_flags = O_RDWR | (flags & O_NONBLOCK);
+	file->f_pos = 0;
+	file->private_data = sock;
+
+	return 0;
+}
+
+int sock_map_fd(struct socket *sock, int flags)
+{
+	struct file *newfile;
+	int fd = sock_alloc_fd(&newfile, flags);
+
+	if (likely(fd >= 0)) {
+		int err = sock_attach_fd(sock, newfile, flags);
+
+		if (unlikely(err < 0)) {
+			put_filp(newfile);
+			put_unused_fd(fd);
+			return err;
+		}
+		fd_install(fd, newfile);
+	}
+	return fd;
+}
+
+static struct socket *sock_from_file(struct file *file, int *err)
+{
+	if (file->f_op == &socket_file_ops)
+		return file->private_data;	/* set in sock_map_fd */
+
+	*err = -ENOTSOCK;
+	return NULL;
+}
+
+/**
+ *	sockfd_lookup	- 	Go from a file number to its socket slot
+ *	@fd: file handle
+ *	@err: pointer to an error code return
+ *
+ *	The file handle passed in is locked and the socket it is bound
+ *	too is returned. If an error occurs the err pointer is overwritten
+ *	with a negative errno code and NULL is returned. The function checks
+ *	for both invalid handles and passing a handle which is not a socket.
+ *
+ *	On a success the socket object pointer is returned.
+ */
+
+struct socket *sockfd_lookup(int fd, int *err)
+{
+	struct file *file;
+	struct socket *sock;
+
+	file = fget(fd);
+	if (!file) {
+		*err = -EBADF;
+		return NULL;
+	}
+
+	sock = sock_from_file(file, err);
+	if (!sock)
+		fput(file);
+	return sock;
+}
+
+static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
+{
+	struct file *file;
+	struct socket *sock;
+
+	*err = -EBADF;
+	file = fget_light(fd, fput_needed);
+	if (file) {
+		sock = sock_from_file(file, err);
+		if (sock)
+			return sock;
+		fput_light(file, *fput_needed);
+	}
+	return NULL;
+}
+
+/**
+ *	sock_alloc	-	allocate a socket
+ *
+ *	Allocate a new inode and socket object. The two are bound together
+ *	and initialised. The socket is then returned. If we are out of inodes
+ *	NULL is returned.
+ */
+
+static struct socket *sock_alloc(void)
+{
+	struct inode *inode;
+	struct socket *sock;
+
+	inode = new_inode(sock_mnt->mnt_sb);
+	if (!inode)
+		return NULL;
+
+	sock = SOCKET_I(inode);
+
+	inode->i_mode = S_IFSOCK | S_IRWXUGO;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
+
+	get_cpu_var(sockets_in_use)++;
+	put_cpu_var(sockets_in_use);
+	return sock;
+}
+
+/*
+ *	In theory you can't get an open on this inode, but /proc provides
+ *	a back door. Remember to keep it shut otherwise you'll let the
+ *	creepy crawlies in.
+ */
+
+static int sock_no_open(struct inode *irrelevant, struct file *dontcare)
+{
+	return -ENXIO;
+}
+
+const struct file_operations bad_sock_fops = {
+	.owner = THIS_MODULE,
+	.open = sock_no_open,
+};
+
+/**
+ *	sock_release	-	close a socket
+ *	@sock: socket to close
+ *
+ *	The socket is released from the protocol stack if it has a release
+ *	callback, and the inode is then released if the socket is bound to
+ *	an inode not a file.
+ */
+
+void sock_release(struct socket *sock)
+{
+	if (sock->ops) {
+		struct module *owner = sock->ops->owner;
+
+		sock->ops->release(sock);
+		sock->ops = NULL;
+		module_put(owner);
+	}
+
+	if (sock->fasync_list)
+		printk(KERN_ERR "sock_release: fasync list not empty!\n");
+
+	get_cpu_var(sockets_in_use)--;
+	put_cpu_var(sockets_in_use);
+	if (!sock->file) {
+		iput(SOCK_INODE(sock));
+		return;
+	}
+	sock->file = NULL;
+}
+
+static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
+				 struct msghdr *msg, size_t size)
+{
+	struct sock_iocb *si = kiocb_to_siocb(iocb);
+	int err;
+
+	si->sock = sock;
+	si->scm = NULL;
+	si->msg = msg;
+	si->size = size;
+
+	err = security_socket_sendmsg(sock, msg, size);
+	if (err)
+		return err;
+
+	return sock->ops->sendmsg(iocb, sock, msg, size);
+}
+
+int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
+{
+	struct kiocb iocb;
+	struct sock_iocb siocb;
+	int ret;
+
+	init_sync_kiocb(&iocb, NULL);
+	iocb.private = &siocb;
+	ret = __sock_sendmsg(&iocb, sock, msg, size);
+	if (-EIOCBQUEUED == ret)
+		ret = wait_on_sync_kiocb(&iocb);
+	return ret;
+}
+
+int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
+		   struct kvec *vec, size_t num, size_t size)
+{
+	mm_segment_t oldfs = get_fs();
+	int result;
+
+	set_fs(KERNEL_DS);
+	/*
+	 * the following is safe, since for compiler definitions of kvec and
+	 * iovec are identical, yielding the same in-core layout and alignment
+	 */
+	msg->msg_iov = (struct iovec *)vec;
+	msg->msg_iovlen = num;
+	result = sock_sendmsg(sock, msg, size);
+	set_fs(oldfs);
+	return result;
+}
+
+/*
+ * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP)
+ */
+void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
+	struct sk_buff *skb)
+{
+	ktime_t kt = skb->tstamp;
+
+	if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) {
+		struct timeval tv;
+		/* Race occurred between timestamp enabling and packet
+		   receiving.  Fill in the current time for now. */
+		if (kt.tv64 == 0)
+			kt = ktime_get_real();
+		skb->tstamp = kt;
+		tv = ktime_to_timeval(kt);
+		put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMP, sizeof(tv), &tv);
+	} else {
+		struct timespec ts;
+		/* Race occurred between timestamp enabling and packet
+		   receiving.  Fill in the current time for now. */
+		if (kt.tv64 == 0)
+			kt = ktime_get_real();
+		skb->tstamp = kt;
+		ts = ktime_to_timespec(kt);
+		put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPNS, sizeof(ts), &ts);
+	}
+}
+
+EXPORT_SYMBOL_GPL(__sock_recv_timestamp);
+
+static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
+				 struct msghdr *msg, size_t size, int flags)
+{
+	int err;
+	struct sock_iocb *si = kiocb_to_siocb(iocb);
+
+	si->sock = sock;
+	si->scm = NULL;
+	si->msg = msg;
+	si->size = size;
+	si->flags = flags;
+
+	err = security_socket_recvmsg(sock, msg, size, flags);
+	if (err)
+		return err;
+
+	return sock->ops->recvmsg(iocb, sock, msg, size, flags);
+}
+
+int sock_recvmsg(struct socket *sock, struct msghdr *msg,
+		 size_t size, int flags)
+{
+	struct kiocb iocb;
+	struct sock_iocb siocb;
+	int ret;
+
+	init_sync_kiocb(&iocb, NULL);
+	iocb.private = &siocb;
+	ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
+	if (-EIOCBQUEUED == ret)
+		ret = wait_on_sync_kiocb(&iocb);
+	return ret;
+}
+
+int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
+		   struct kvec *vec, size_t num, size_t size, int flags)
+{
+	mm_segment_t oldfs = get_fs();
+	int result;
+
+	set_fs(KERNEL_DS);
+	/*
+	 * the following is safe, since for compiler definitions of kvec and
+	 * iovec are identical, yielding the same in-core layout and alignment
+	 */
+	msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num;
+	result = sock_recvmsg(sock, msg, size, flags);
+	set_fs(oldfs);
+	return result;
+}
+
+static void sock_aio_dtor(struct kiocb *iocb)
+{
+	kfree(iocb->private);
+}
+
+static ssize_t sock_sendpage(struct file *file, struct page *page,
+			     int offset, size_t size, loff_t *ppos, int more)
+{
+	struct socket *sock;
+	int flags;
+
+	sock = file->private_data;
+
+	flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+	if (more)
+		flags |= MSG_MORE;
+
+	return sock->ops->sendpage(sock, page, offset, size, flags);
+}
+
+static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
+			        struct pipe_inode_info *pipe, size_t len,
+				unsigned int flags)
+{
+	struct socket *sock = file->private_data;
+
+	if (unlikely(!sock->ops->splice_read))
+		return -EINVAL;
+
+	return sock->ops->splice_read(sock, ppos, pipe, len, flags);
+}
+
+static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
+					 struct sock_iocb *siocb)
+{
+	if (!is_sync_kiocb(iocb)) {
+		siocb = kmalloc(sizeof(*siocb), GFP_KERNEL);
+		if (!siocb)
+			return NULL;
+		iocb->ki_dtor = sock_aio_dtor;
+	}
+
+	siocb->kiocb = iocb;
+	iocb->private = siocb;
+	return siocb;
+}
+
+static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
+		struct file *file, const struct iovec *iov,
+		unsigned long nr_segs)
+{
+	struct socket *sock = file->private_data;
+	size_t size = 0;
+	int i;
+
+	for (i = 0; i < nr_segs; i++)
+		size += iov[i].iov_len;
+
+	msg->msg_name = NULL;
+	msg->msg_namelen = 0;
+	msg->msg_control = NULL;
+	msg->msg_controllen = 0;
+	msg->msg_iov = (struct iovec *)iov;
+	msg->msg_iovlen = nr_segs;
+	msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+
+	return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
+}
+
+static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
+				unsigned long nr_segs, loff_t pos)
+{
+	struct sock_iocb siocb, *x;
+
+	if (pos != 0)
+		return -ESPIPE;
+
+	if (iocb->ki_left == 0)	/* Match SYS5 behaviour */
+		return 0;
+
+
+	x = alloc_sock_iocb(iocb, &siocb);
+	if (!x)
+		return -ENOMEM;
+	return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs);
+}
+
+static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
+			struct file *file, const struct iovec *iov,
+			unsigned long nr_segs)
+{
+	struct socket *sock = file->private_data;
+	size_t size = 0;
+	int i;
+
+	for (i = 0; i < nr_segs; i++)
+		size += iov[i].iov_len;
+
+	msg->msg_name = NULL;
+	msg->msg_namelen = 0;
+	msg->msg_control = NULL;
+	msg->msg_controllen = 0;
+	msg->msg_iov = (struct iovec *)iov;
+	msg->msg_iovlen = nr_segs;
+	msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+	if (sock->type == SOCK_SEQPACKET)
+		msg->msg_flags |= MSG_EOR;
+
+	return __sock_sendmsg(iocb, sock, msg, size);
+}
+
+static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
+			  unsigned long nr_segs, loff_t pos)
+{
+	struct sock_iocb siocb, *x;
+
+	if (pos != 0)
+		return -ESPIPE;
+
+	x = alloc_sock_iocb(iocb, &siocb);
+	if (!x)
+		return -ENOMEM;
+
+	return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs);
+}
+
+/*
+ * Atomic setting of ioctl hooks to avoid race
+ * with module unload.
+ */
+
+static DEFINE_MUTEX(br_ioctl_mutex);
+static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg) = NULL;
+
+void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *))
+{
+	mutex_lock(&br_ioctl_mutex);
+	br_ioctl_hook = hook;
+	mutex_unlock(&br_ioctl_mutex);
+}
+
+EXPORT_SYMBOL(brioctl_set);
+
+static DEFINE_MUTEX(vlan_ioctl_mutex);
+static int (*vlan_ioctl_hook) (struct net *, void __user *arg);
+
+void vlan_ioctl_set(int (*hook) (struct net *, void __user *))
+{
+	mutex_lock(&vlan_ioctl_mutex);
+	vlan_ioctl_hook = hook;
+	mutex_unlock(&vlan_ioctl_mutex);
+}
+
+EXPORT_SYMBOL(vlan_ioctl_set);
+
+static DEFINE_MUTEX(dlci_ioctl_mutex);
+static int (*dlci_ioctl_hook) (unsigned int, void __user *);
+
+void dlci_ioctl_set(int (*hook) (unsigned int, void __user *))
+{
+	mutex_lock(&dlci_ioctl_mutex);
+	dlci_ioctl_hook = hook;
+	mutex_unlock(&dlci_ioctl_mutex);
+}
+
+EXPORT_SYMBOL(dlci_ioctl_set);
+
+/*
+ *	With an ioctl, arg may well be a user mode pointer, but we don't know
+ *	what to do with it - that's up to the protocol still.
+ */
+
+static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
+{
+	struct socket *sock;
+	struct sock *sk;
+	void __user *argp = (void __user *)arg;
+	int pid, err;
+	struct net *net;
+
+	sock = file->private_data;
+	sk = sock->sk;
+	net = sock_net(sk);
+	if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
+		err = dev_ioctl(net, cmd, argp);
+	} else
+#ifdef CONFIG_WIRELESS_EXT
+	if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
+		err = dev_ioctl(net, cmd, argp);
+	} else
+#endif				/* CONFIG_WIRELESS_EXT */
+		switch (cmd) {
+		case FIOSETOWN:
+		case SIOCSPGRP:
+			err = -EFAULT;
+			if (get_user(pid, (int __user *)argp))
+				break;
+			err = f_setown(sock->file, pid, 1);
+			break;
+		case FIOGETOWN:
+		case SIOCGPGRP:
+			err = put_user(f_getown(sock->file),
+				       (int __user *)argp);
+			break;
+		case SIOCGIFBR:
+		case SIOCSIFBR:
+		case SIOCBRADDBR:
+		case SIOCBRDELBR:
+			err = -ENOPKG;
+			if (!br_ioctl_hook)
+				request_module("bridge");
+
+			mutex_lock(&br_ioctl_mutex);
+			if (br_ioctl_hook)
+				err = br_ioctl_hook(net, cmd, argp);
+			mutex_unlock(&br_ioctl_mutex);
+			break;
+		case SIOCGIFVLAN:
+		case SIOCSIFVLAN:
+			err = -ENOPKG;
+			if (!vlan_ioctl_hook)
+				request_module("8021q");
+
+			mutex_lock(&vlan_ioctl_mutex);
+			if (vlan_ioctl_hook)
+				err = vlan_ioctl_hook(net, argp);
+			mutex_unlock(&vlan_ioctl_mutex);
+			break;
+		case SIOCADDDLCI:
+		case SIOCDELDLCI:
+			err = -ENOPKG;
+			if (!dlci_ioctl_hook)
+				request_module("dlci");
+
+			mutex_lock(&dlci_ioctl_mutex);
+			if (dlci_ioctl_hook)
+				err = dlci_ioctl_hook(cmd, argp);
+			mutex_unlock(&dlci_ioctl_mutex);
+			break;
+		default:
+			err = sock->ops->ioctl(sock, cmd, arg);
+
+			/*
+			 * If this ioctl is unknown try to hand it down
+			 * to the NIC driver.
+			 */
+			if (err == -ENOIOCTLCMD)
+				err = dev_ioctl(net, cmd, argp);
+			break;
+		}
+	return err;
+}
+
+int sock_create_lite(int family, int type, int protocol, struct socket **res)
+{
+	int err;
+	struct socket *sock = NULL;
+
+	err = security_socket_create(family, type, protocol, 1);
+	if (err)
+		goto out;
+
+	sock = sock_alloc();
+	if (!sock) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	sock->type = type;
+	err = security_socket_post_create(sock, family, type, protocol, 1);
+	if (err)
+		goto out_release;
+
+out:
+	*res = sock;
+	return err;
+out_release:
+	sock_release(sock);
+	sock = NULL;
+	goto out;
+}
+
+/* No kernel lock held - perfect */
+static unsigned int sock_poll(struct file *file, poll_table *wait)
+{
+	struct socket *sock;
+
+	/*
+	 *      We can't return errors to poll, so it's either yes or no.
+	 */
+	sock = file->private_data;
+	return sock->ops->poll(file, sock, wait);
+}
+
+static int sock_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct socket *sock = file->private_data;
+
+	return sock->ops->mmap(file, sock, vma);
+}
+
+static int sock_close(struct inode *inode, struct file *filp)
+{
+	/*
+	 *      It was possible the inode is NULL we were
+	 *      closing an unfinished socket.
+	 */
+
+	if (!inode) {
+		printk(KERN_DEBUG "sock_close: NULL inode\n");
+		return 0;
+	}
+	sock_release(SOCKET_I(inode));
+	return 0;
+}
+
+/*
+ *	Update the socket async list
+ *
+ *	Fasync_list locking strategy.
+ *
+ *	1. fasync_list is modified only under process context socket lock
+ *	   i.e. under semaphore.
+ *	2. fasync_list is used under read_lock(&sk->sk_callback_lock)
+ *	   or under socket lock.
+ *	3. fasync_list can be used from softirq context, so that
+ *	   modification under socket lock have to be enhanced with
+ *	   write_lock_bh(&sk->sk_callback_lock).
+ *							--ANK (990710)
+ */
+
+static int sock_fasync(int fd, struct file *filp, int on)
+{
+	struct fasync_struct *fa, *fna = NULL, **prev;
+	struct socket *sock;
+	struct sock *sk;
+
+	if (on) {
+		fna = kmalloc(sizeof(struct fasync_struct), GFP_KERNEL);
+		if (fna == NULL)
+			return -ENOMEM;
+	}
+
+	sock = filp->private_data;
+
+	sk = sock->sk;
+	if (sk == NULL) {
+		kfree(fna);
+		return -EINVAL;
+	}
+
+	lock_sock(sk);
+
+	prev = &(sock->fasync_list);
+
+	for (fa = *prev; fa != NULL; prev = &fa->fa_next, fa = *prev)
+		if (fa->fa_file == filp)
+			break;
+
+	if (on) {
+		if (fa != NULL) {
+			write_lock_bh(&sk->sk_callback_lock);
+			fa->fa_fd = fd;
+			write_unlock_bh(&sk->sk_callback_lock);
+
+			kfree(fna);
+			goto out;
+		}
+		fna->fa_file = filp;
+		fna->fa_fd = fd;
+		fna->magic = FASYNC_MAGIC;
+		fna->fa_next = sock->fasync_list;
+		write_lock_bh(&sk->sk_callback_lock);
+		sock->fasync_list = fna;
+		write_unlock_bh(&sk->sk_callback_lock);
+	} else {
+		if (fa != NULL) {
+			write_lock_bh(&sk->sk_callback_lock);
+			*prev = fa->fa_next;
+			write_unlock_bh(&sk->sk_callback_lock);
+			kfree(fa);
+		}
+	}
+
+out:
+	release_sock(sock->sk);
+	return 0;
+}
+
+/* This function may be called only under socket lock or callback_lock */
+
+int sock_wake_async(struct socket *sock, int how, int band)
+{
+	if (!sock || !sock->fasync_list)
+		return -1;
+	switch (how) {
+	case SOCK_WAKE_WAITD:
+		if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
+			break;
+		goto call_kill;
+	case SOCK_WAKE_SPACE:
+		if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags))
+			break;
+		/* fall through */
+	case SOCK_WAKE_IO:
+call_kill:
+		__kill_fasync(sock->fasync_list, SIGIO, band);
+		break;
+	case SOCK_WAKE_URG:
+		__kill_fasync(sock->fasync_list, SIGURG, band);
+	}
+	return 0;
+}
+
+static int __sock_create(struct net *net, int family, int type, int protocol,
+			 struct socket **res, int kern)
+{
+	int err;
+	struct socket *sock;
+	const struct net_proto_family *pf;
+
+	/*
+	 *      Check protocol is in range
+	 */
+	if (family < 0 || family >= NPROTO)
+		return -EAFNOSUPPORT;
+	if (type < 0 || type >= SOCK_MAX)
+		return -EINVAL;
+
+	/* Compatibility.
+
+	   This uglymoron is moved from INET layer to here to avoid
+	   deadlock in module load.
+	 */
+	if (family == PF_INET && type == SOCK_PACKET) {
+		static int warned;
+		if (!warned) {
+			warned = 1;
+			printk(KERN_INFO "%s uses obsolete (PF_INET,SOCK_PACKET)\n",
+			       current->comm);
+		}
+		family = PF_PACKET;
+	}
+
+	err = security_socket_create(family, type, protocol, kern);
+	if (err)
+		return err;
+
+	/*
+	 *	Allocate the socket and allow the family to set things up. if
+	 *	the protocol is 0, the family is instructed to select an appropriate
+	 *	default.
+	 */
+	sock = sock_alloc();
+	if (!sock) {
+		if (net_ratelimit())
+			printk(KERN_WARNING "socket: no more sockets\n");
+		return -ENFILE;	/* Not exactly a match, but its the
+				   closest posix thing */
+	}
+
+	sock->type = type;
+
+#ifdef CONFIG_MODULES
+	/* Attempt to load a protocol module if the find failed.
+	 *
+	 * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user
+	 * requested real, full-featured networking support upon configuration.
+	 * Otherwise module support will break!
+	 */
+	if (net_families[family] == NULL)
+		request_module("net-pf-%d", family);
+#endif
+
+	rcu_read_lock();
+	pf = rcu_dereference(net_families[family]);
+	err = -EAFNOSUPPORT;
+	if (!pf)
+		goto out_release;
+
+	/*
+	 * We will call the ->create function, that possibly is in a loadable
+	 * module, so we have to bump that loadable module refcnt first.
+	 */
+	if (!try_module_get(pf->owner))
+		goto out_release;
+
+	/* Now protected by module ref count */
+	rcu_read_unlock();
+
+	err = pf->create(net, sock, protocol);
+	if (err < 0)
+		goto out_module_put;
+
+	/*
+	 * Now to bump the refcnt of the [loadable] module that owns this
+	 * socket at sock_release time we decrement its refcnt.
+	 */
+	if (!try_module_get(sock->ops->owner))
+		goto out_module_busy;
+
+	/*
+	 * Now that we're done with the ->create function, the [loadable]
+	 * module can have its refcnt decremented
+	 */
+	module_put(pf->owner);
+	err = security_socket_post_create(sock, family, type, protocol, kern);
+	if (err)
+		goto out_sock_release;
+	*res = sock;
+
+	return 0;
+
+out_module_busy:
+	err = -EAFNOSUPPORT;
+out_module_put:
+	sock->ops = NULL;
+	module_put(pf->owner);
+out_sock_release:
+	sock_release(sock);
+	return err;
+
+out_release:
+	rcu_read_unlock();
+	goto out_sock_release;
+}
+
+int sock_create(int family, int type, int protocol, struct socket **res)
+{
+	return __sock_create(current->nsproxy->net_ns, family, type, protocol, res, 0);
+}
+
+int sock_create_kern(int family, int type, int protocol, struct socket **res)
+{
+	return __sock_create(&init_net, family, type, protocol, res, 1);
+}
+
+SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
+{
+	int retval;
+	struct socket *sock;
+	int flags;
+
+	/* Check the SOCK_* constants for consistency.  */
+	BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC);
+	BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK);
+	BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK);
+	BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK);
+
+	flags = type & ~SOCK_TYPE_MASK;
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
+		return -EINVAL;
+	type &= SOCK_TYPE_MASK;
+
+	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
+		flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK;
+
+	retval = sock_create(family, type, protocol, &sock);
+	if (retval < 0)
+		goto out;
+
+	retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK));
+	if (retval < 0)
+		goto out_release;
+
+out:
+	/* It may be already another descriptor 8) Not kernel problem. */
+	return retval;
+
+out_release:
+	sock_release(sock);
+	return retval;
+}
+
+/*
+ *	Create a pair of connected sockets.
+ */
+
+SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol,
+		int __user *, usockvec)
+{
+	struct socket *sock1, *sock2;
+	int fd1, fd2, err;
+	struct file *newfile1, *newfile2;
+	int flags;
+
+	flags = type & ~SOCK_TYPE_MASK;
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
+		return -EINVAL;
+	type &= SOCK_TYPE_MASK;
+
+	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
+		flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK;
+
+	/*
+	 * Obtain the first socket and check if the underlying protocol
+	 * supports the socketpair call.
+	 */
+
+	err = sock_create(family, type, protocol, &sock1);
+	if (err < 0)
+		goto out;
+
+	err = sock_create(family, type, protocol, &sock2);
+	if (err < 0)
+		goto out_release_1;
+
+	err = sock1->ops->socketpair(sock1, sock2);
+	if (err < 0)
+		goto out_release_both;
+
+	fd1 = sock_alloc_fd(&newfile1, flags & O_CLOEXEC);
+	if (unlikely(fd1 < 0)) {
+		err = fd1;
+		goto out_release_both;
+	}
+
+	fd2 = sock_alloc_fd(&newfile2, flags & O_CLOEXEC);
+	if (unlikely(fd2 < 0)) {
+		err = fd2;
+		put_filp(newfile1);
+		put_unused_fd(fd1);
+		goto out_release_both;
+	}
+
+	err = sock_attach_fd(sock1, newfile1, flags & O_NONBLOCK);
+	if (unlikely(err < 0)) {
+		goto out_fd2;
+	}
+
+	err = sock_attach_fd(sock2, newfile2, flags & O_NONBLOCK);
+	if (unlikely(err < 0)) {
+		fput(newfile1);
+		goto out_fd1;
+	}
+
+	audit_fd_pair(fd1, fd2);
+	fd_install(fd1, newfile1);
+	fd_install(fd2, newfile2);
+	/* fd1 and fd2 may be already another descriptors.
+	 * Not kernel problem.
+	 */
+
+	err = put_user(fd1, &usockvec[0]);
+	if (!err)
+		err = put_user(fd2, &usockvec[1]);
+	if (!err)
+		return 0;
+
+	sys_close(fd2);
+	sys_close(fd1);
+	return err;
+
+out_release_both:
+	sock_release(sock2);
+out_release_1:
+	sock_release(sock1);
+out:
+	return err;
+
+out_fd2:
+	put_filp(newfile1);
+	sock_release(sock1);
+out_fd1:
+	put_filp(newfile2);
+	sock_release(sock2);
+	put_unused_fd(fd1);
+	put_unused_fd(fd2);
+	goto out;
+}
+
+/*
+ *	Bind a name to a socket. Nothing much to do here since it's
+ *	the protocol's responsibility to handle the local address.
+ *
+ *	We move the socket address to kernel space before we call
+ *	the protocol layer (having also checked the address is ok).
+ */
+
+SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock) {
+		err = move_addr_to_kernel(umyaddr, addrlen, (struct sockaddr *)&address);
+		if (err >= 0) {
+			err = security_socket_bind(sock,
+						   (struct sockaddr *)&address,
+						   addrlen);
+			if (!err)
+				err = sock->ops->bind(sock,
+						      (struct sockaddr *)
+						      &address, addrlen);
+		}
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Perform a listen. Basically, we allow the protocol to do anything
+ *	necessary for a listen, and if that works, we mark the socket as
+ *	ready for listening.
+ */
+
+SYSCALL_DEFINE2(listen, int, fd, int, backlog)
+{
+	struct socket *sock;
+	int err, fput_needed;
+	int somaxconn;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock) {
+		somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn;
+		if ((unsigned)backlog > somaxconn)
+			backlog = somaxconn;
+
+		err = security_socket_listen(sock, backlog);
+		if (!err)
+			err = sock->ops->listen(sock, backlog);
+
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	For accept, we attempt to create a new socket, set up the link
+ *	with the client, wake up the client, then return the new
+ *	connected fd. We collect the address of the connector in kernel
+ *	space and move it to user at the very end. This is unclean because
+ *	we open the socket then return an error.
+ *
+ *	1003.1g adds the ability to recvmsg() to query connection pending
+ *	status to recvmsg. We need to add that support in a way thats
+ *	clean when we restucture accept also.
+ */
+
+SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
+		int __user *, upeer_addrlen, int, flags)
+{
+	struct socket *sock, *newsock;
+	struct file *newfile;
+	int err, len, newfd, fput_needed;
+	struct sockaddr_storage address;
+
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
+		return -EINVAL;
+
+	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
+		flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	err = -ENFILE;
+	if (!(newsock = sock_alloc()))
+		goto out_put;
+
+	newsock->type = sock->type;
+	newsock->ops = sock->ops;
+
+	/*
+	 * We don't need try_module_get here, as the listening socket (sock)
+	 * has the protocol module (sock->ops->owner) held.
+	 */
+	__module_get(newsock->ops->owner);
+
+	newfd = sock_alloc_fd(&newfile, flags & O_CLOEXEC);
+	if (unlikely(newfd < 0)) {
+		err = newfd;
+		sock_release(newsock);
+		goto out_put;
+	}
+
+	err = sock_attach_fd(newsock, newfile, flags & O_NONBLOCK);
+	if (err < 0)
+		goto out_fd_simple;
+
+	err = security_socket_accept(sock, newsock);
+	if (err)
+		goto out_fd;
+
+	err = sock->ops->accept(sock, newsock, sock->file->f_flags);
+	if (err < 0)
+		goto out_fd;
+
+	if (upeer_sockaddr) {
+		if (newsock->ops->getname(newsock, (struct sockaddr *)&address,
+					  &len, 2) < 0) {
+			err = -ECONNABORTED;
+			goto out_fd;
+		}
+		err = move_addr_to_user((struct sockaddr *)&address,
+					len, upeer_sockaddr, upeer_addrlen);
+		if (err < 0)
+			goto out_fd;
+	}
+
+	/* File flags are not inherited via accept() unlike another OSes. */
+
+	fd_install(newfd, newfile);
+	err = newfd;
+
+	security_socket_post_accept(sock, newsock);
+
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+out_fd_simple:
+	sock_release(newsock);
+	put_filp(newfile);
+	put_unused_fd(newfd);
+	goto out_put;
+out_fd:
+	fput(newfile);
+	put_unused_fd(newfd);
+	goto out_put;
+}
+
+SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr,
+		int __user *, upeer_addrlen)
+{
+	return sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0);
+}
+
+/*
+ *	Attempt to connect to a socket with the server address.  The address
+ *	is in user space so we verify it is OK and move it to kernel space.
+ *
+ *	For 1003.1g we need to add clean support for a bind to AF_UNSPEC to
+ *	break bindings
+ *
+ *	NOTE: 1003.1g draft 6.3 is broken with respect to AX.25/NetROM and
+ *	other SEQPACKET protocols that take time to connect() as it doesn't
+ *	include the -EINPROGRESS status for such sockets.
+ */
+
+SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr,
+		int, addrlen)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+	err = move_addr_to_kernel(uservaddr, addrlen, (struct sockaddr *)&address);
+	if (err < 0)
+		goto out_put;
+
+	err =
+	    security_socket_connect(sock, (struct sockaddr *)&address, addrlen);
+	if (err)
+		goto out_put;
+
+	err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen,
+				 sock->file->f_flags);
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Get the local address ('name') of a socket object. Move the obtained
+ *	name to user space.
+ */
+
+SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
+		int __user *, usockaddr_len)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int len, err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	err = security_socket_getsockname(sock);
+	if (err)
+		goto out_put;
+
+	err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0);
+	if (err)
+		goto out_put;
+	err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, usockaddr_len);
+
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Get the remote address ('name') of a socket object. Move the obtained
+ *	name to user space.
+ */
+
+SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr,
+		int __user *, usockaddr_len)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int len, err, fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_getpeername(sock);
+		if (err) {
+			fput_light(sock->file, fput_needed);
+			return err;
+		}
+
+		err =
+		    sock->ops->getname(sock, (struct sockaddr *)&address, &len,
+				       1);
+		if (!err)
+			err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr,
+						usockaddr_len);
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Send a datagram to a given address. We move the address into kernel
+ *	space and check the user space data area is readable before invoking
+ *	the protocol.
+ */
+
+SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len,
+		unsigned, flags, struct sockaddr __user *, addr,
+		int, addr_len)
+{
+	struct socket *sock;
+	struct sockaddr_storage address;
+	int err;
+	struct msghdr msg;
+	struct iovec iov;
+	int fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	iov.iov_base = buff;
+	iov.iov_len = len;
+	msg.msg_name = NULL;
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_namelen = 0;
+	if (addr) {
+		err = move_addr_to_kernel(addr, addr_len, (struct sockaddr *)&address);
+		if (err < 0)
+			goto out_put;
+		msg.msg_name = (struct sockaddr *)&address;
+		msg.msg_namelen = addr_len;
+	}
+	if (sock->file->f_flags & O_NONBLOCK)
+		flags |= MSG_DONTWAIT;
+	msg.msg_flags = flags;
+	err = sock_sendmsg(sock, &msg, len);
+
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Send a datagram down a socket.
+ */
+
+SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len,
+		unsigned, flags)
+{
+	return sys_sendto(fd, buff, len, flags, NULL, 0);
+}
+
+/*
+ *	Receive a frame from the socket and optionally record the address of the
+ *	sender. We verify the buffers are writable and if needed move the
+ *	sender address from kernel to user space.
+ */
+
+SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
+		unsigned, flags, struct sockaddr __user *, addr,
+		int __user *, addr_len)
+{
+	struct socket *sock;
+	struct iovec iov;
+	struct msghdr msg;
+	struct sockaddr_storage address;
+	int err, err2;
+	int fput_needed;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_iovlen = 1;
+	msg.msg_iov = &iov;
+	iov.iov_len = size;
+	iov.iov_base = ubuf;
+	msg.msg_name = (struct sockaddr *)&address;
+	msg.msg_namelen = sizeof(address);
+	if (sock->file->f_flags & O_NONBLOCK)
+		flags |= MSG_DONTWAIT;
+	err = sock_recvmsg(sock, &msg, size, flags);
+
+	if (err >= 0 && addr != NULL) {
+		err2 = move_addr_to_user((struct sockaddr *)&address,
+					 msg.msg_namelen, addr, addr_len);
+		if (err2 < 0)
+			err = err2;
+	}
+
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	Receive a datagram from a socket.
+ */
+
+asmlinkage long sys_recv(int fd, void __user *ubuf, size_t size,
+			 unsigned flags)
+{
+	return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL);
+}
+
+/*
+ *	Set a socket option. Because we don't know the option lengths we have
+ *	to pass the user mode parameter for the protocols to sort out.
+ */
+
+SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
+		char __user *, optval, int, optlen)
+{
+	int err, fput_needed;
+	struct socket *sock;
+
+	if (optlen < 0)
+		return -EINVAL;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_setsockopt(sock, level, optname);
+		if (err)
+			goto out_put;
+
+		if (level == SOL_SOCKET)
+			err =
+			    sock_setsockopt(sock, level, optname, optval,
+					    optlen);
+		else
+			err =
+			    sock->ops->setsockopt(sock, level, optname, optval,
+						  optlen);
+out_put:
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Get a socket option. Because we don't know the option lengths we have
+ *	to pass a user mode parameter for the protocols to sort out.
+ */
+
+SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
+		char __user *, optval, int __user *, optlen)
+{
+	int err, fput_needed;
+	struct socket *sock;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_getsockopt(sock, level, optname);
+		if (err)
+			goto out_put;
+
+		if (level == SOL_SOCKET)
+			err =
+			    sock_getsockopt(sock, level, optname, optval,
+					    optlen);
+		else
+			err =
+			    sock->ops->getsockopt(sock, level, optname, optval,
+						  optlen);
+out_put:
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/*
+ *	Shutdown a socket.
+ */
+
+SYSCALL_DEFINE2(shutdown, int, fd, int, how)
+{
+	int err, fput_needed;
+	struct socket *sock;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (sock != NULL) {
+		err = security_socket_shutdown(sock, how);
+		if (!err)
+			err = sock->ops->shutdown(sock, how);
+		fput_light(sock->file, fput_needed);
+	}
+	return err;
+}
+
+/* A couple of helpful macros for getting the address of the 32/64 bit
+ * fields which are the same type (int / unsigned) on our platforms.
+ */
+#define COMPAT_MSG(msg, member)	((MSG_CMSG_COMPAT & flags) ? &msg##_compat->member : &msg->member)
+#define COMPAT_NAMELEN(msg)	COMPAT_MSG(msg, msg_namelen)
+#define COMPAT_FLAGS(msg)	COMPAT_MSG(msg, msg_flags)
+
+/*
+ *	BSD sendmsg interface
+ */
+
+SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
+{
+	struct compat_msghdr __user *msg_compat =
+	    (struct compat_msghdr __user *)msg;
+	struct socket *sock;
+	struct sockaddr_storage address;
+	struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
+	unsigned char ctl[sizeof(struct cmsghdr) + 20]
+	    __attribute__ ((aligned(sizeof(__kernel_size_t))));
+	/* 20 is size of ipv6_pktinfo */
+	unsigned char *ctl_buf = ctl;
+	struct msghdr msg_sys;
+	int err, ctl_len, iov_size, total_len;
+	int fput_needed;
+
+	err = -EFAULT;
+	if (MSG_CMSG_COMPAT & flags) {
+		if (get_compat_msghdr(&msg_sys, msg_compat))
+			return -EFAULT;
+	}
+	else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+		return -EFAULT;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	/* do not move before msg_sys is valid */
+	err = -EMSGSIZE;
+	if (msg_sys.msg_iovlen > UIO_MAXIOV)
+		goto out_put;
+
+	/* Check whether to allocate the iovec area */
+	err = -ENOMEM;
+	iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
+	if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+		iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
+		if (!iov)
+			goto out_put;
+	}
+
+	/* This will also move the address data into kernel space */
+	if (MSG_CMSG_COMPAT & flags) {
+		err = verify_compat_iovec(&msg_sys, iov,
+					  (struct sockaddr *)&address,
+					  VERIFY_READ);
+	} else
+		err = verify_iovec(&msg_sys, iov,
+				   (struct sockaddr *)&address,
+				   VERIFY_READ);
+	if (err < 0)
+		goto out_freeiov;
+	total_len = err;
+
+	err = -ENOBUFS;
+
+	if (msg_sys.msg_controllen > INT_MAX)
+		goto out_freeiov;
+	ctl_len = msg_sys.msg_controllen;
+	if ((MSG_CMSG_COMPAT & flags) && ctl_len) {
+		err =
+		    cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl,
+						     sizeof(ctl));
+		if (err)
+			goto out_freeiov;
+		ctl_buf = msg_sys.msg_control;
+		ctl_len = msg_sys.msg_controllen;
+	} else if (ctl_len) {
+		if (ctl_len > sizeof(ctl)) {
+			ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL);
+			if (ctl_buf == NULL)
+				goto out_freeiov;
+		}
+		err = -EFAULT;
+		/*
+		 * Careful! Before this, msg_sys.msg_control contains a user pointer.
+		 * Afterwards, it will be a kernel pointer. Thus the compiler-assisted
+		 * checking falls down on this.
+		 */
+		if (copy_from_user(ctl_buf, (void __user *)msg_sys.msg_control,
+				   ctl_len))
+			goto out_freectl;
+		msg_sys.msg_control = ctl_buf;
+	}
+	msg_sys.msg_flags = flags;
+
+	if (sock->file->f_flags & O_NONBLOCK)
+		msg_sys.msg_flags |= MSG_DONTWAIT;
+	err = sock_sendmsg(sock, &msg_sys, total_len);
+
+out_freectl:
+	if (ctl_buf != ctl)
+		sock_kfree_s(sock->sk, ctl_buf, ctl_len);
+out_freeiov:
+	if (iov != iovstack)
+		sock_kfree_s(sock->sk, iov, iov_size);
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+/*
+ *	BSD recvmsg interface
+ */
+
+SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg,
+		unsigned int, flags)
+{
+	struct compat_msghdr __user *msg_compat =
+	    (struct compat_msghdr __user *)msg;
+	struct socket *sock;
+	struct iovec iovstack[UIO_FASTIOV];
+	struct iovec *iov = iovstack;
+	struct msghdr msg_sys;
+	unsigned long cmsg_ptr;
+	int err, iov_size, total_len, len;
+	int fput_needed;
+
+	/* kernel mode address */
+	struct sockaddr_storage addr;
+
+	/* user mode address pointers */
+	struct sockaddr __user *uaddr;
+	int __user *uaddr_len;
+
+	if (MSG_CMSG_COMPAT & flags) {
+		if (get_compat_msghdr(&msg_sys, msg_compat))
+			return -EFAULT;
+	}
+	else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+		return -EFAULT;
+
+	sock = sockfd_lookup_light(fd, &err, &fput_needed);
+	if (!sock)
+		goto out;
+
+	err = -EMSGSIZE;
+	if (msg_sys.msg_iovlen > UIO_MAXIOV)
+		goto out_put;
+
+	/* Check whether to allocate the iovec area */
+	err = -ENOMEM;
+	iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
+	if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+		iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
+		if (!iov)
+			goto out_put;
+	}
+
+	/*
+	 *      Save the user-mode address (verify_iovec will change the
+	 *      kernel msghdr to use the kernel address space)
+	 */
+
+	uaddr = (__force void __user *)msg_sys.msg_name;
+	uaddr_len = COMPAT_NAMELEN(msg);
+	if (MSG_CMSG_COMPAT & flags) {
+		err = verify_compat_iovec(&msg_sys, iov,
+					  (struct sockaddr *)&addr,
+					  VERIFY_WRITE);
+	} else
+		err = verify_iovec(&msg_sys, iov,
+				   (struct sockaddr *)&addr,
+				   VERIFY_WRITE);
+	if (err < 0)
+		goto out_freeiov;
+	total_len = err;
+
+	cmsg_ptr = (unsigned long)msg_sys.msg_control;
+	msg_sys.msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT);
+
+	if (sock->file->f_flags & O_NONBLOCK)
+		flags |= MSG_DONTWAIT;
+	err = sock_recvmsg(sock, &msg_sys, total_len, flags);
+	if (err < 0)
+		goto out_freeiov;
+	len = err;
+
+	if (uaddr != NULL) {
+		err = move_addr_to_user((struct sockaddr *)&addr,
+					msg_sys.msg_namelen, uaddr,
+					uaddr_len);
+		if (err < 0)
+			goto out_freeiov;
+	}
+	err = __put_user((msg_sys.msg_flags & ~MSG_CMSG_COMPAT),
+			 COMPAT_FLAGS(msg));
+	if (err)
+		goto out_freeiov;
+	if (MSG_CMSG_COMPAT & flags)
+		err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
+				 &msg_compat->msg_controllen);
+	else
+		err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
+				 &msg->msg_controllen);
+	if (err)
+		goto out_freeiov;
+	err = len;
+
+out_freeiov:
+	if (iov != iovstack)
+		sock_kfree_s(sock->sk, iov, iov_size);
+out_put:
+	fput_light(sock->file, fput_needed);
+out:
+	return err;
+}
+
+#ifdef __ARCH_WANT_SYS_SOCKETCALL
+
+/* Argument list sizes for sys_socketcall */
+#define AL(x) ((x) * sizeof(unsigned long))
+static const unsigned char nargs[19]={
+	AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
+	AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
+	AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
+	AL(4)
+};
+
+#undef AL
+
+/*
+ *	System call vectors.
+ *
+ *	Argument checking cleaned up. Saved 20% in size.
+ *  This function doesn't need to set the kernel lock because
+ *  it is set by the callees.
+ */
+
+SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
+{
+	unsigned long a[6];
+	unsigned long a0, a1;
+	int err;
+
+	if (call < 1 || call > SYS_ACCEPT4)
+		return -EINVAL;
+
+	/* copy_from_user should be SMP safe. */
+	if (copy_from_user(a, args, nargs[call]))
+		return -EFAULT;
+
+	audit_socketcall(nargs[call] / sizeof(unsigned long), a);
+
+	a0 = a[0];
+	a1 = a[1];
+
+	switch (call) {
+	case SYS_SOCKET:
+		err = sys_socket(a0, a1, a[2]);
+		break;
+	case SYS_BIND:
+		err = sys_bind(a0, (struct sockaddr __user *)a1, a[2]);
+		break;
+	case SYS_CONNECT:
+		err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]);
+		break;
+	case SYS_LISTEN:
+		err = sys_listen(a0, a1);
+		break;
+	case SYS_ACCEPT:
+		err = sys_accept4(a0, (struct sockaddr __user *)a1,
+				  (int __user *)a[2], 0);
+		break;
+	case SYS_GETSOCKNAME:
+		err =
+		    sys_getsockname(a0, (struct sockaddr __user *)a1,
+				    (int __user *)a[2]);
+		break;
+	case SYS_GETPEERNAME:
+		err =
+		    sys_getpeername(a0, (struct sockaddr __user *)a1,
+				    (int __user *)a[2]);
+		break;
+	case SYS_SOCKETPAIR:
+		err = sys_socketpair(a0, a1, a[2], (int __user *)a[3]);
+		break;
+	case SYS_SEND:
+		err = sys_send(a0, (void __user *)a1, a[2], a[3]);
+		break;
+	case SYS_SENDTO:
+		err = sys_sendto(a0, (void __user *)a1, a[2], a[3],
+				 (struct sockaddr __user *)a[4], a[5]);
+		break;
+	case SYS_RECV:
+		err = sys_recv(a0, (void __user *)a1, a[2], a[3]);
+		break;
+	case SYS_RECVFROM:
+		err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3],
+				   (struct sockaddr __user *)a[4],
+				   (int __user *)a[5]);
+		break;
+	case SYS_SHUTDOWN:
+		err = sys_shutdown(a0, a1);
+		break;
+	case SYS_SETSOCKOPT:
+		err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]);
+		break;
+	case SYS_GETSOCKOPT:
+		err =
+		    sys_getsockopt(a0, a1, a[2], (char __user *)a[3],
+				   (int __user *)a[4]);
+		break;
+	case SYS_SENDMSG:
+		err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]);
+		break;
+	case SYS_RECVMSG:
+		err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]);
+		break;
+	case SYS_ACCEPT4:
+		err = sys_accept4(a0, (struct sockaddr __user *)a1,
+				  (int __user *)a[2], a[3]);
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+	return err;
+}
+
+#endif				/* __ARCH_WANT_SYS_SOCKETCALL */
+
+/**
+ *	sock_register - add a socket protocol handler
+ *	@ops: description of protocol
+ *
+ *	This function is called by a protocol handler that wants to
+ *	advertise its address family, and have it linked into the
+ *	socket interface. The value ops->family coresponds to the
+ *	socket system call protocol family.
+ */
+int sock_register(const struct net_proto_family *ops)
+{
+	int err;
+
+	if (ops->family >= NPROTO) {
+		printk(KERN_CRIT "protocol %d >= NPROTO(%d)\n", ops->family,
+		       NPROTO);
+		return -ENOBUFS;
+	}
+
+	spin_lock(&net_family_lock);
+	if (net_families[ops->family])
+		err = -EEXIST;
+	else {
+		net_families[ops->family] = ops;
+		err = 0;
+	}
+	spin_unlock(&net_family_lock);
+
+	printk(KERN_INFO "NET: Registered protocol family %d\n", ops->family);
+	return err;
+}
+
+/**
+ *	sock_unregister - remove a protocol handler
+ *	@family: protocol family to remove
+ *
+ *	This function is called by a protocol handler that wants to
+ *	remove its address family, and have it unlinked from the
+ *	new socket creation.
+ *
+ *	If protocol handler is a module, then it can use module reference
+ *	counts to protect against new references. If protocol handler is not
+ *	a module then it needs to provide its own protection in
+ *	the ops->create routine.
+ */
+void sock_unregister(int family)
+{
+	BUG_ON(family < 0 || family >= NPROTO);
+
+	spin_lock(&net_family_lock);
+	net_families[family] = NULL;
+	spin_unlock(&net_family_lock);
+
+	synchronize_rcu();
+
+	printk(KERN_INFO "NET: Unregistered protocol family %d\n", family);
+}
+
+static int __init sock_init(void)
+{
+	/*
+	 *      Initialize sock SLAB cache.
+	 */
+
+	sk_init();
+
+	/*
+	 *      Initialize skbuff SLAB cache
+	 */
+	skb_init();
+
+	/*
+	 *      Initialize the protocols module.
+	 */
+
+	init_inodecache();
+	register_filesystem(&sock_fs_type);
+	sock_mnt = kern_mount(&sock_fs_type);
+
+	/* The real protocol initialization is performed in later initcalls.
+	 */
+
+#ifdef CONFIG_NETFILTER
+	netfilter_init();
+#endif
+
+	return 0;
+}
+
+core_initcall(sock_init);	/* early initcall */
+
+#ifdef CONFIG_PROC_FS
+void socket_seq_show(struct seq_file *seq)
+{
+	int cpu;
+	int counter = 0;
+
+	for_each_possible_cpu(cpu)
+	    counter += per_cpu(sockets_in_use, cpu);
+
+	/* It can be negative, by the way. 8) */
+	if (counter < 0)
+		counter = 0;
+
+	seq_printf(seq, "sockets: used %d\n", counter);
+}
+#endif				/* CONFIG_PROC_FS */
+
+#ifdef CONFIG_COMPAT
+static long compat_sock_ioctl(struct file *file, unsigned cmd,
+			      unsigned long arg)
+{
+	struct socket *sock = file->private_data;
+	int ret = -ENOIOCTLCMD;
+	struct sock *sk;
+	struct net *net;
+
+	sk = sock->sk;
+	net = sock_net(sk);
+
+	if (sock->ops->compat_ioctl)
+		ret = sock->ops->compat_ioctl(sock, cmd, arg);
+
+	if (ret == -ENOIOCTLCMD &&
+	    (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST))
+		ret = compat_wext_handle_ioctl(net, cmd, arg);
+
+	return ret;
+}
+#endif
+
+int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
+{
+	return sock->ops->bind(sock, addr, addrlen);
+}
+
+int kernel_listen(struct socket *sock, int backlog)
+{
+	return sock->ops->listen(sock, backlog);
+}
+
+int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
+{
+	struct sock *sk = sock->sk;
+	int err;
+
+	err = sock_create_lite(sk->sk_family, sk->sk_type, sk->sk_protocol,
+			       newsock);
+	if (err < 0)
+		goto done;
+
+	err = sock->ops->accept(sock, *newsock, flags);
+	if (err < 0) {
+		sock_release(*newsock);
+		*newsock = NULL;
+		goto done;
+	}
+
+	(*newsock)->ops = sock->ops;
+	__module_get((*newsock)->ops->owner);
+
+done:
+	return err;
+}
+
+int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
+		   int flags)
+{
+	return sock->ops->connect(sock, addr, addrlen, flags);
+}
+
+int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
+			 int *addrlen)
+{
+	return sock->ops->getname(sock, addr, addrlen, 0);
+}
+
+int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
+			 int *addrlen)
+{
+	return sock->ops->getname(sock, addr, addrlen, 1);
+}
+
+int kernel_getsockopt(struct socket *sock, int level, int optname,
+			char *optval, int *optlen)
+{
+	mm_segment_t oldfs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	if (level == SOL_SOCKET)
+		err = sock_getsockopt(sock, level, optname, optval, optlen);
+	else
+		err = sock->ops->getsockopt(sock, level, optname, optval,
+					    optlen);
+	set_fs(oldfs);
+	return err;
+}
+
+int kernel_setsockopt(struct socket *sock, int level, int optname,
+			char *optval, int optlen)
+{
+	mm_segment_t oldfs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	if (level == SOL_SOCKET)
+		err = sock_setsockopt(sock, level, optname, optval, optlen);
+	else
+		err = sock->ops->setsockopt(sock, level, optname, optval,
+					    optlen);
+	set_fs(oldfs);
+	return err;
+}
+
+int kernel_sendpage(struct socket *sock, struct page *page, int offset,
+		    size_t size, int flags)
+{
+	if (sock->ops->sendpage)
+		return sock->ops->sendpage(sock, page, offset, size, flags);
+
+	return sock_no_sendpage(sock, page, offset, size, flags);
+}
+
+int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)
+{
+	mm_segment_t oldfs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	err = sock->ops->ioctl(sock, cmd, arg);
+	set_fs(oldfs);
+
+	return err;
+}
+
+int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how)
+{
+	return sock->ops->shutdown(sock, how);
+}
+
+EXPORT_SYMBOL(sock_create);
+EXPORT_SYMBOL(sock_create_kern);
+EXPORT_SYMBOL(sock_create_lite);
+EXPORT_SYMBOL(sock_map_fd);
+EXPORT_SYMBOL(sock_recvmsg);
+EXPORT_SYMBOL(sock_register);
+EXPORT_SYMBOL(sock_release);
+EXPORT_SYMBOL(sock_sendmsg);
+EXPORT_SYMBOL(sock_unregister);
+EXPORT_SYMBOL(sock_wake_async);
+EXPORT_SYMBOL(sockfd_lookup);
+EXPORT_SYMBOL(kernel_sendmsg);
+EXPORT_SYMBOL(kernel_recvmsg);
+EXPORT_SYMBOL(kernel_bind);
+EXPORT_SYMBOL(kernel_listen);
+EXPORT_SYMBOL(kernel_accept);
+EXPORT_SYMBOL(kernel_connect);
+EXPORT_SYMBOL(kernel_getsockname);
+EXPORT_SYMBOL(kernel_getpeername);
+EXPORT_SYMBOL(kernel_getsockopt);
+EXPORT_SYMBOL(kernel_setsockopt);
+EXPORT_SYMBOL(kernel_sendpage);
+EXPORT_SYMBOL(kernel_sock_ioctl);
+EXPORT_SYMBOL(kernel_sock_shutdown);