remove .svn directories

4 files changed, 0 insertions, 2087 deletions

diff --git a/libdde_linux26/lib/src/net/netlink/.svn/all-wcprops b/libdde_linux26/lib/src/net/netlink/.svn/all-wcprops
deleted file mode 100644
index 0a8a5102..00000000
--- a/libdde_linux26/lib/src/net/netlink/.svn/all-wcprops
+++ /dev/null
@@ -1,11 +0,0 @@
-K 25
-svn:wc:ra_dav:version-url
-V 70
-/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/lib/src/net/netlink
-END
-af_netlink.c
-K 25
-svn:wc:ra_dav:version-url
-V 83
-/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/lib/src/net/netlink/af_netlink.c
-END
diff --git a/libdde_linux26/lib/src/net/netlink/.svn/entries b/libdde_linux26/lib/src/net/netlink/.svn/entries
deleted file mode 100644
index 402cf7d8..00000000
--- a/libdde_linux26/lib/src/net/netlink/.svn/entries
+++ /dev/null
@@ -1,62 +0,0 @@
-9
-
-dir
-465
-http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/lib/src/net/netlink
-http://svn.tudos.org/repos/tudos
-
-
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-2009-05-20T14:32:55.606606Z
-455
-l4check
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-svn:special svn:externals svn:needs-lock
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-a704ac0b-3a55-4d43-a2a9-7be6f07c34fb
-
-af_netlink.c
-file
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-2009-11-15T17:17:07.000000Z
-d6f60c20045cf045ccf3ecffb1d15d18
-2009-05-20T14:32:55.606606Z
-455
-l4check
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-45165
-
diff --git a/libdde_linux26/lib/src/net/netlink/.svn/format b/libdde_linux26/lib/src/net/netlink/.svn/format
deleted file mode 100644
index ec635144..00000000
--- a/libdde_linux26/lib/src/net/netlink/.svn/format
+++ /dev/null
@@ -1 +0,0 @@
-9
diff --git a/libdde_linux26/lib/src/net/netlink/.svn/text-base/af_netlink.c.svn-base b/libdde_linux26/lib/src/net/netlink/.svn/text-base/af_netlink.c.svn-base
deleted file mode 100644
index 3f00a014..00000000
--- a/libdde_linux26/lib/src/net/netlink/.svn/text-base/af_netlink.c.svn-base
+++ /dev/null
@@ -1,2013 +0,0 @@
-/*
- * NETLINK      Kernel-user communication protocol.
- *
- * 		Authors:	Alan Cox <alan@lxorguk.ukuu.org.uk>
- * 				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.
- *
- * Tue Jun 26 14:36:48 MEST 2001 Herbert "herp" Rosmanith
- *                               added netlink_proto_exit
- * Tue Jan 22 18:32:44 BRST 2002 Arnaldo C. de Melo <acme@conectiva.com.br>
- * 				 use nlk_sk, as sk->protinfo is on a diet 8)
- * Fri Jul 22 19:51:12 MEST 2005 Harald Welte <laforge@gnumonks.org>
- * 				 - inc module use count of module that owns
- * 				   the kernel socket in case userspace opens
- * 				   socket of same protocol
- * 				 - remove all module support, since netlink is
- * 				   mandatory if CONFIG_NET=y these days
- */
-
-#include <linux/module.h>
-
-#include <linux/capability.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/socket.h>
-#include <linux/un.h>
-#include <linux/fcntl.h>
-#include <linux/termios.h>
-#include <linux/sockios.h>
-#include <linux/net.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <asm/uaccess.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/rtnetlink.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/notifier.h>
-#include <linux/security.h>
-#include <linux/jhash.h>
-#include <linux/jiffies.h>
-#include <linux/random.h>
-#include <linux/bitops.h>
-#include <linux/mm.h>
-#include <linux/types.h>
-#include <linux/audit.h>
-#include <linux/mutex.h>
-
-#include <net/net_namespace.h>
-#include <net/sock.h>
-#include <net/scm.h>
-#include <net/netlink.h>
-
-#define NLGRPSZ(x)	(ALIGN(x, sizeof(unsigned long) * 8) / 8)
-#define NLGRPLONGS(x)	(NLGRPSZ(x)/sizeof(unsigned long))
-
-struct netlink_sock {
-	/* struct sock has to be the first member of netlink_sock */
-	struct sock		sk;
-	u32			pid;
-	u32			dst_pid;
-	u32			dst_group;
-	u32			flags;
-	u32			subscriptions;
-	u32			ngroups;
-	unsigned long		*groups;
-	unsigned long		state;
-	wait_queue_head_t	wait;
-	struct netlink_callback	*cb;
-	struct mutex		*cb_mutex;
-	struct mutex		cb_def_mutex;
-	void			(*netlink_rcv)(struct sk_buff *skb);
-	struct module		*module;
-};
-
-#define NETLINK_KERNEL_SOCKET	0x1
-#define NETLINK_RECV_PKTINFO	0x2
-
-static inline struct netlink_sock *nlk_sk(struct sock *sk)
-{
-	return container_of(sk, struct netlink_sock, sk);
-}
-
-static inline int netlink_is_kernel(struct sock *sk)
-{
-	return nlk_sk(sk)->flags & NETLINK_KERNEL_SOCKET;
-}
-
-struct nl_pid_hash {
-	struct hlist_head *table;
-	unsigned long rehash_time;
-
-	unsigned int mask;
-	unsigned int shift;
-
-	unsigned int entries;
-	unsigned int max_shift;
-
-	u32 rnd;
-};
-
-struct netlink_table {
-	struct nl_pid_hash hash;
-	struct hlist_head mc_list;
-	unsigned long *listeners;
-	unsigned int nl_nonroot;
-	unsigned int groups;
-	struct mutex *cb_mutex;
-	struct module *module;
-	int registered;
-};
-
-static struct netlink_table *nl_table;
-
-static DECLARE_WAIT_QUEUE_HEAD(nl_table_wait);
-
-static int netlink_dump(struct sock *sk);
-static void netlink_destroy_callback(struct netlink_callback *cb);
-
-static DEFINE_RWLOCK(nl_table_lock);
-static atomic_t nl_table_users = ATOMIC_INIT(0);
-
-static ATOMIC_NOTIFIER_HEAD(netlink_chain);
-
-static u32 netlink_group_mask(u32 group)
-{
-	return group ? 1 << (group - 1) : 0;
-}
-
-static struct hlist_head *nl_pid_hashfn(struct nl_pid_hash *hash, u32 pid)
-{
-	return &hash->table[jhash_1word(pid, hash->rnd) & hash->mask];
-}
-
-static void netlink_sock_destruct(struct sock *sk)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-
-	if (nlk->cb) {
-		if (nlk->cb->done)
-			nlk->cb->done(nlk->cb);
-		netlink_destroy_callback(nlk->cb);
-	}
-
-	skb_queue_purge(&sk->sk_receive_queue);
-
-	if (!sock_flag(sk, SOCK_DEAD)) {
-		printk(KERN_ERR "Freeing alive netlink socket %p\n", sk);
-		return;
-	}
-
-	WARN_ON(atomic_read(&sk->sk_rmem_alloc));
-	WARN_ON(atomic_read(&sk->sk_wmem_alloc));
-	WARN_ON(nlk_sk(sk)->groups);
-}
-
-/* This lock without WQ_FLAG_EXCLUSIVE is good on UP and it is _very_ bad on
- * SMP. Look, when several writers sleep and reader wakes them up, all but one
- * immediately hit write lock and grab all the cpus. Exclusive sleep solves
- * this, _but_ remember, it adds useless work on UP machines.
- */
-
-static void netlink_table_grab(void)
-	__acquires(nl_table_lock)
-{
-	write_lock_irq(&nl_table_lock);
-
-	if (atomic_read(&nl_table_users)) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		add_wait_queue_exclusive(&nl_table_wait, &wait);
-		for (;;) {
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			if (atomic_read(&nl_table_users) == 0)
-				break;
-			write_unlock_irq(&nl_table_lock);
-			schedule();
-			write_lock_irq(&nl_table_lock);
-		}
-
-		__set_current_state(TASK_RUNNING);
-		remove_wait_queue(&nl_table_wait, &wait);
-	}
-}
-
-static void netlink_table_ungrab(void)
-	__releases(nl_table_lock)
-{
-	write_unlock_irq(&nl_table_lock);
-	wake_up(&nl_table_wait);
-}
-
-static inline void
-netlink_lock_table(void)
-{
-	/* read_lock() synchronizes us to netlink_table_grab */
-
-	read_lock(&nl_table_lock);
-	atomic_inc(&nl_table_users);
-	read_unlock(&nl_table_lock);
-}
-
-static inline void
-netlink_unlock_table(void)
-{
-	if (atomic_dec_and_test(&nl_table_users))
-		wake_up(&nl_table_wait);
-}
-
-static inline struct sock *netlink_lookup(struct net *net, int protocol,
-					  u32 pid)
-{
-	struct nl_pid_hash *hash = &nl_table[protocol].hash;
-	struct hlist_head *head;
-	struct sock *sk;
-	struct hlist_node *node;
-
-	read_lock(&nl_table_lock);
-	head = nl_pid_hashfn(hash, pid);
-	sk_for_each(sk, node, head) {
-		if (net_eq(sock_net(sk), net) && (nlk_sk(sk)->pid == pid)) {
-			sock_hold(sk);
-			goto found;
-		}
-	}
-	sk = NULL;
-found:
-	read_unlock(&nl_table_lock);
-	return sk;
-}
-
-static inline struct hlist_head *nl_pid_hash_zalloc(size_t size)
-{
-	if (size <= PAGE_SIZE)
-		return kzalloc(size, GFP_ATOMIC);
-	else
-		return (struct hlist_head *)
-			__get_free_pages(GFP_ATOMIC | __GFP_ZERO,
-					 get_order(size));
-}
-
-static inline void nl_pid_hash_free(struct hlist_head *table, size_t size)
-{
-	if (size <= PAGE_SIZE)
-		kfree(table);
-	else
-		free_pages((unsigned long)table, get_order(size));
-}
-
-static int nl_pid_hash_rehash(struct nl_pid_hash *hash, int grow)
-{
-	unsigned int omask, mask, shift;
-	size_t osize, size;
-	struct hlist_head *otable, *table;
-	int i;
-
-	omask = mask = hash->mask;
-	osize = size = (mask + 1) * sizeof(*table);
-	shift = hash->shift;
-
-	if (grow) {
-		if (++shift > hash->max_shift)
-			return 0;
-		mask = mask * 2 + 1;
-		size *= 2;
-	}
-
-	table = nl_pid_hash_zalloc(size);
-	if (!table)
-		return 0;
-
-	otable = hash->table;
-	hash->table = table;
-	hash->mask = mask;
-	hash->shift = shift;
-	get_random_bytes(&hash->rnd, sizeof(hash->rnd));
-
-	for (i = 0; i <= omask; i++) {
-		struct sock *sk;
-		struct hlist_node *node, *tmp;
-
-		sk_for_each_safe(sk, node, tmp, &otable[i])
-			__sk_add_node(sk, nl_pid_hashfn(hash, nlk_sk(sk)->pid));
-	}
-
-	nl_pid_hash_free(otable, osize);
-	hash->rehash_time = jiffies + 10 * 60 * HZ;
-	return 1;
-}
-
-static inline int nl_pid_hash_dilute(struct nl_pid_hash *hash, int len)
-{
-	int avg = hash->entries >> hash->shift;
-
-	if (unlikely(avg > 1) && nl_pid_hash_rehash(hash, 1))
-		return 1;
-
-	if (unlikely(len > avg) && time_after(jiffies, hash->rehash_time)) {
-		nl_pid_hash_rehash(hash, 0);
-		return 1;
-	}
-
-	return 0;
-}
-
-static const struct proto_ops netlink_ops;
-
-static void
-netlink_update_listeners(struct sock *sk)
-{
-	struct netlink_table *tbl = &nl_table[sk->sk_protocol];
-	struct hlist_node *node;
-	unsigned long mask;
-	unsigned int i;
-
-	for (i = 0; i < NLGRPLONGS(tbl->groups); i++) {
-		mask = 0;
-		sk_for_each_bound(sk, node, &tbl->mc_list) {
-			if (i < NLGRPLONGS(nlk_sk(sk)->ngroups))
-				mask |= nlk_sk(sk)->groups[i];
-		}
-		tbl->listeners[i] = mask;
-	}
-	/* this function is only called with the netlink table "grabbed", which
-	 * makes sure updates are visible before bind or setsockopt return. */
-}
-
-static int netlink_insert(struct sock *sk, struct net *net, u32 pid)
-{
-	struct nl_pid_hash *hash = &nl_table[sk->sk_protocol].hash;
-	struct hlist_head *head;
-	int err = -EADDRINUSE;
-	struct sock *osk;
-	struct hlist_node *node;
-	int len;
-
-	netlink_table_grab();
-	head = nl_pid_hashfn(hash, pid);
-	len = 0;
-	sk_for_each(osk, node, head) {
-		if (net_eq(sock_net(osk), net) && (nlk_sk(osk)->pid == pid))
-			break;
-		len++;
-	}
-	if (node)
-		goto err;
-
-	err = -EBUSY;
-	if (nlk_sk(sk)->pid)
-		goto err;
-
-	err = -ENOMEM;
-	if (BITS_PER_LONG > 32 && unlikely(hash->entries >= UINT_MAX))
-		goto err;
-
-	if (len && nl_pid_hash_dilute(hash, len))
-		head = nl_pid_hashfn(hash, pid);
-	hash->entries++;
-	nlk_sk(sk)->pid = pid;
-	sk_add_node(sk, head);
-	err = 0;
-
-err:
-	netlink_table_ungrab();
-	return err;
-}
-
-static void netlink_remove(struct sock *sk)
-{
-	netlink_table_grab();
-	if (sk_del_node_init(sk))
-		nl_table[sk->sk_protocol].hash.entries--;
-	if (nlk_sk(sk)->subscriptions)
-		__sk_del_bind_node(sk);
-	netlink_table_ungrab();
-}
-
-static struct proto netlink_proto = {
-	.name	  = "NETLINK",
-	.owner	  = THIS_MODULE,
-	.obj_size = sizeof(struct netlink_sock),
-};
-
-static int __netlink_create(struct net *net, struct socket *sock,
-			    struct mutex *cb_mutex, int protocol)
-{
-	struct sock *sk;
-	struct netlink_sock *nlk;
-
-	sock->ops = &netlink_ops;
-
-	sk = sk_alloc(net, PF_NETLINK, GFP_KERNEL, &netlink_proto);
-	if (!sk)
-		return -ENOMEM;
-
-	sock_init_data(sock, sk);
-
-	nlk = nlk_sk(sk);
-	if (cb_mutex)
-		nlk->cb_mutex = cb_mutex;
-	else {
-		nlk->cb_mutex = &nlk->cb_def_mutex;
-		mutex_init(nlk->cb_mutex);
-	}
-	init_waitqueue_head(&nlk->wait);
-
-	sk->sk_destruct = netlink_sock_destruct;
-	sk->sk_protocol = protocol;
-	return 0;
-}
-
-static int netlink_create(struct net *net, struct socket *sock, int protocol)
-{
-	struct module *module = NULL;
-	struct mutex *cb_mutex;
-	struct netlink_sock *nlk;
-	int err = 0;
-
-	sock->state = SS_UNCONNECTED;
-
-	if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
-		return -ESOCKTNOSUPPORT;
-
-	if (protocol < 0 || protocol >= MAX_LINKS)
-		return -EPROTONOSUPPORT;
-
-	netlink_lock_table();
-#ifdef CONFIG_MODULES
-	if (!nl_table[protocol].registered) {
-		netlink_unlock_table();
-		request_module("net-pf-%d-proto-%d", PF_NETLINK, protocol);
-		netlink_lock_table();
-	}
-#endif
-	if (nl_table[protocol].registered &&
-	    try_module_get(nl_table[protocol].module))
-		module = nl_table[protocol].module;
-	cb_mutex = nl_table[protocol].cb_mutex;
-	netlink_unlock_table();
-
-	err = __netlink_create(net, sock, cb_mutex, protocol);
-	if (err < 0)
-		goto out_module;
-
-	local_bh_disable();
-	sock_prot_inuse_add(net, &netlink_proto, 1);
-	local_bh_enable();
-
-	nlk = nlk_sk(sock->sk);
-	nlk->module = module;
-out:
-	return err;
-
-out_module:
-	module_put(module);
-	goto out;
-}
-
-static int netlink_release(struct socket *sock)
-{
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk;
-
-	if (!sk)
-		return 0;
-
-	netlink_remove(sk);
-	sock_orphan(sk);
-	nlk = nlk_sk(sk);
-
-	/*
-	 * OK. Socket is unlinked, any packets that arrive now
-	 * will be purged.
-	 */
-
-	sock->sk = NULL;
-	wake_up_interruptible_all(&nlk->wait);
-
-	skb_queue_purge(&sk->sk_write_queue);
-
-	if (nlk->pid && !nlk->subscriptions) {
-		struct netlink_notify n = {
-						.net = sock_net(sk),
-						.protocol = sk->sk_protocol,
-						.pid = nlk->pid,
-					  };
-		atomic_notifier_call_chain(&netlink_chain,
-				NETLINK_URELEASE, &n);
-	}
-
-	module_put(nlk->module);
-
-	netlink_table_grab();
-	if (netlink_is_kernel(sk)) {
-		BUG_ON(nl_table[sk->sk_protocol].registered == 0);
-		if (--nl_table[sk->sk_protocol].registered == 0) {
-			kfree(nl_table[sk->sk_protocol].listeners);
-			nl_table[sk->sk_protocol].module = NULL;
-			nl_table[sk->sk_protocol].registered = 0;
-		}
-	} else if (nlk->subscriptions)
-		netlink_update_listeners(sk);
-	netlink_table_ungrab();
-
-	kfree(nlk->groups);
-	nlk->groups = NULL;
-
-	local_bh_disable();
-	sock_prot_inuse_add(sock_net(sk), &netlink_proto, -1);
-	local_bh_enable();
-	sock_put(sk);
-	return 0;
-}
-
-static int netlink_autobind(struct socket *sock)
-{
-	struct sock *sk = sock->sk;
-	struct net *net = sock_net(sk);
-	struct nl_pid_hash *hash = &nl_table[sk->sk_protocol].hash;
-	struct hlist_head *head;
-	struct sock *osk;
-	struct hlist_node *node;
-	s32 pid = current->tgid;
-	int err;
-	static s32 rover = -4097;
-
-retry:
-	cond_resched();
-	netlink_table_grab();
-	head = nl_pid_hashfn(hash, pid);
-	sk_for_each(osk, node, head) {
-		if (!net_eq(sock_net(osk), net))
-			continue;
-		if (nlk_sk(osk)->pid == pid) {
-			/* Bind collision, search negative pid values. */
-			pid = rover--;
-			if (rover > -4097)
-				rover = -4097;
-			netlink_table_ungrab();
-			goto retry;
-		}
-	}
-	netlink_table_ungrab();
-
-	err = netlink_insert(sk, net, pid);
-	if (err == -EADDRINUSE)
-		goto retry;
-
-	/* If 2 threads race to autobind, that is fine.  */
-	if (err == -EBUSY)
-		err = 0;
-
-	return err;
-}
-
-static inline int netlink_capable(struct socket *sock, unsigned int flag)
-{
-	return (nl_table[sock->sk->sk_protocol].nl_nonroot & flag) ||
-	       capable(CAP_NET_ADMIN);
-}
-
-static void
-netlink_update_subscriptions(struct sock *sk, unsigned int subscriptions)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-
-	if (nlk->subscriptions && !subscriptions)
-		__sk_del_bind_node(sk);
-	else if (!nlk->subscriptions && subscriptions)
-		sk_add_bind_node(sk, &nl_table[sk->sk_protocol].mc_list);
-	nlk->subscriptions = subscriptions;
-}
-
-static int netlink_realloc_groups(struct sock *sk)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-	unsigned int groups;
-	unsigned long *new_groups;
-	int err = 0;
-
-	netlink_table_grab();
-
-	groups = nl_table[sk->sk_protocol].groups;
-	if (!nl_table[sk->sk_protocol].registered) {
-		err = -ENOENT;
-		goto out_unlock;
-	}
-
-	if (nlk->ngroups >= groups)
-		goto out_unlock;
-
-	new_groups = krealloc(nlk->groups, NLGRPSZ(groups), GFP_ATOMIC);
-	if (new_groups == NULL) {
-		err = -ENOMEM;
-		goto out_unlock;
-	}
-	memset((char *)new_groups + NLGRPSZ(nlk->ngroups), 0,
-	       NLGRPSZ(groups) - NLGRPSZ(nlk->ngroups));
-
-	nlk->groups = new_groups;
-	nlk->ngroups = groups;
- out_unlock:
-	netlink_table_ungrab();
-	return err;
-}
-
-static int netlink_bind(struct socket *sock, struct sockaddr *addr,
-			int addr_len)
-{
-	struct sock *sk = sock->sk;
-	struct net *net = sock_net(sk);
-	struct netlink_sock *nlk = nlk_sk(sk);
-	struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
-	int err;
-
-	if (nladdr->nl_family != AF_NETLINK)
-		return -EINVAL;
-
-	/* Only superuser is allowed to listen multicasts */
-	if (nladdr->nl_groups) {
-		if (!netlink_capable(sock, NL_NONROOT_RECV))
-			return -EPERM;
-		err = netlink_realloc_groups(sk);
-		if (err)
-			return err;
-	}
-
-	if (nlk->pid) {
-		if (nladdr->nl_pid != nlk->pid)
-			return -EINVAL;
-	} else {
-		err = nladdr->nl_pid ?
-			netlink_insert(sk, net, nladdr->nl_pid) :
-			netlink_autobind(sock);
-		if (err)
-			return err;
-	}
-
-	if (!nladdr->nl_groups && (nlk->groups == NULL || !(u32)nlk->groups[0]))
-		return 0;
-
-	netlink_table_grab();
-	netlink_update_subscriptions(sk, nlk->subscriptions +
-					 hweight32(nladdr->nl_groups) -
-					 hweight32(nlk->groups[0]));
-	nlk->groups[0] = (nlk->groups[0] & ~0xffffffffUL) | nladdr->nl_groups;
-	netlink_update_listeners(sk);
-	netlink_table_ungrab();
-
-	return 0;
-}
-
-static int netlink_connect(struct socket *sock, struct sockaddr *addr,
-			   int alen, int flags)
-{
-	int err = 0;
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk = nlk_sk(sk);
-	struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
-
-	if (addr->sa_family == AF_UNSPEC) {
-		sk->sk_state	= NETLINK_UNCONNECTED;
-		nlk->dst_pid	= 0;
-		nlk->dst_group  = 0;
-		return 0;
-	}
-	if (addr->sa_family != AF_NETLINK)
-		return -EINVAL;
-
-	/* Only superuser is allowed to send multicasts */
-	if (nladdr->nl_groups && !netlink_capable(sock, NL_NONROOT_SEND))
-		return -EPERM;
-
-	if (!nlk->pid)
-		err = netlink_autobind(sock);
-
-	if (err == 0) {
-		sk->sk_state	= NETLINK_CONNECTED;
-		nlk->dst_pid 	= nladdr->nl_pid;
-		nlk->dst_group  = ffs(nladdr->nl_groups);
-	}
-
-	return err;
-}
-
-static int netlink_getname(struct socket *sock, struct sockaddr *addr,
-			   int *addr_len, int peer)
-{
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk = nlk_sk(sk);
-	struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
-
-	nladdr->nl_family = AF_NETLINK;
-	nladdr->nl_pad = 0;
-	*addr_len = sizeof(*nladdr);
-
-	if (peer) {
-		nladdr->nl_pid = nlk->dst_pid;
-		nladdr->nl_groups = netlink_group_mask(nlk->dst_group);
-	} else {
-		nladdr->nl_pid = nlk->pid;
-		nladdr->nl_groups = nlk->groups ? nlk->groups[0] : 0;
-	}
-	return 0;
-}
-
-static void netlink_overrun(struct sock *sk)
-{
-	if (!test_and_set_bit(0, &nlk_sk(sk)->state)) {
-		sk->sk_err = ENOBUFS;
-		sk->sk_error_report(sk);
-	}
-}
-
-static struct sock *netlink_getsockbypid(struct sock *ssk, u32 pid)
-{
-	struct sock *sock;
-	struct netlink_sock *nlk;
-
-	sock = netlink_lookup(sock_net(ssk), ssk->sk_protocol, pid);
-	if (!sock)
-		return ERR_PTR(-ECONNREFUSED);
-
-	/* Don't bother queuing skb if kernel socket has no input function */
-	nlk = nlk_sk(sock);
-	if (sock->sk_state == NETLINK_CONNECTED &&
-	    nlk->dst_pid != nlk_sk(ssk)->pid) {
-		sock_put(sock);
-		return ERR_PTR(-ECONNREFUSED);
-	}
-	return sock;
-}
-
-struct sock *netlink_getsockbyfilp(struct file *filp)
-{
-	struct inode *inode = filp->f_path.dentry->d_inode;
-	struct sock *sock;
-
-	if (!S_ISSOCK(inode->i_mode))
-		return ERR_PTR(-ENOTSOCK);
-
-	sock = SOCKET_I(inode)->sk;
-	if (sock->sk_family != AF_NETLINK)
-		return ERR_PTR(-EINVAL);
-
-	sock_hold(sock);
-	return sock;
-}
-
-/*
- * Attach a skb to a netlink socket.
- * The caller must hold a reference to the destination socket. On error, the
- * reference is dropped. The skb is not send to the destination, just all
- * all error checks are performed and memory in the queue is reserved.
- * Return values:
- * < 0: error. skb freed, reference to sock dropped.
- * 0: continue
- * 1: repeat lookup - reference dropped while waiting for socket memory.
- */
-int netlink_attachskb(struct sock *sk, struct sk_buff *skb,
-		      long *timeo, struct sock *ssk)
-{
-	struct netlink_sock *nlk;
-
-	nlk = nlk_sk(sk);
-
-	if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
-	    test_bit(0, &nlk->state)) {
-		DECLARE_WAITQUEUE(wait, current);
-		if (!*timeo) {
-			if (!ssk || netlink_is_kernel(ssk))
-				netlink_overrun(sk);
-			sock_put(sk);
-			kfree_skb(skb);
-			return -EAGAIN;
-		}
-
-		__set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&nlk->wait, &wait);
-
-		if ((atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
-		     test_bit(0, &nlk->state)) &&
-		    !sock_flag(sk, SOCK_DEAD))
-			*timeo = schedule_timeout(*timeo);
-
-		__set_current_state(TASK_RUNNING);
-		remove_wait_queue(&nlk->wait, &wait);
-		sock_put(sk);
-
-		if (signal_pending(current)) {
-			kfree_skb(skb);
-			return sock_intr_errno(*timeo);
-		}
-		return 1;
-	}
-	skb_set_owner_r(skb, sk);
-	return 0;
-}
-
-int netlink_sendskb(struct sock *sk, struct sk_buff *skb)
-{
-	int len = skb->len;
-
-	skb_queue_tail(&sk->sk_receive_queue, skb);
-	sk->sk_data_ready(sk, len);
-	sock_put(sk);
-	return len;
-}
-
-void netlink_detachskb(struct sock *sk, struct sk_buff *skb)
-{
-	kfree_skb(skb);
-	sock_put(sk);
-}
-
-static inline struct sk_buff *netlink_trim(struct sk_buff *skb,
-					   gfp_t allocation)
-{
-	int delta;
-
-	skb_orphan(skb);
-
-	delta = skb->end - skb->tail;
-	if (delta * 2 < skb->truesize)
-		return skb;
-
-	if (skb_shared(skb)) {
-		struct sk_buff *nskb = skb_clone(skb, allocation);
-		if (!nskb)
-			return skb;
-		kfree_skb(skb);
-		skb = nskb;
-	}
-
-	if (!pskb_expand_head(skb, 0, -delta, allocation))
-		skb->truesize -= delta;
-
-	return skb;
-}
-
-static inline void netlink_rcv_wake(struct sock *sk)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-
-	if (skb_queue_empty(&sk->sk_receive_queue))
-		clear_bit(0, &nlk->state);
-	if (!test_bit(0, &nlk->state))
-		wake_up_interruptible(&nlk->wait);
-}
-
-static inline int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb)
-{
-	int ret;
-	struct netlink_sock *nlk = nlk_sk(sk);
-
-	ret = -ECONNREFUSED;
-	if (nlk->netlink_rcv != NULL) {
-		ret = skb->len;
-		skb_set_owner_r(skb, sk);
-		nlk->netlink_rcv(skb);
-	}
-	kfree_skb(skb);
-	sock_put(sk);
-	return ret;
-}
-
-int netlink_unicast(struct sock *ssk, struct sk_buff *skb,
-		    u32 pid, int nonblock)
-{
-	struct sock *sk;
-	int err;
-	long timeo;
-
-	skb = netlink_trim(skb, gfp_any());
-
-	timeo = sock_sndtimeo(ssk, nonblock);
-retry:
-	sk = netlink_getsockbypid(ssk, pid);
-	if (IS_ERR(sk)) {
-		kfree_skb(skb);
-		return PTR_ERR(sk);
-	}
-	if (netlink_is_kernel(sk))
-		return netlink_unicast_kernel(sk, skb);
-
-	if (sk_filter(sk, skb)) {
-		err = skb->len;
-		kfree_skb(skb);
-		sock_put(sk);
-		return err;
-	}
-
-	err = netlink_attachskb(sk, skb, &timeo, ssk);
-	if (err == 1)
-		goto retry;
-	if (err)
-		return err;
-
-	return netlink_sendskb(sk, skb);
-}
-EXPORT_SYMBOL(netlink_unicast);
-
-int netlink_has_listeners(struct sock *sk, unsigned int group)
-{
-	int res = 0;
-	unsigned long *listeners;
-
-	BUG_ON(!netlink_is_kernel(sk));
-
-	rcu_read_lock();
-	listeners = rcu_dereference(nl_table[sk->sk_protocol].listeners);
-
-	if (group - 1 < nl_table[sk->sk_protocol].groups)
-		res = test_bit(group - 1, listeners);
-
-	rcu_read_unlock();
-
-	return res;
-}
-EXPORT_SYMBOL_GPL(netlink_has_listeners);
-
-static inline int netlink_broadcast_deliver(struct sock *sk,
-					    struct sk_buff *skb)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-
-	if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf &&
-	    !test_bit(0, &nlk->state)) {
-		skb_set_owner_r(skb, sk);
-		skb_queue_tail(&sk->sk_receive_queue, skb);
-		sk->sk_data_ready(sk, skb->len);
-		return atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf;
-	}
-	return -1;
-}
-
-struct netlink_broadcast_data {
-	struct sock *exclude_sk;
-	struct net *net;
-	u32 pid;
-	u32 group;
-	int failure;
-	int congested;
-	int delivered;
-	gfp_t allocation;
-	struct sk_buff *skb, *skb2;
-};
-
-static inline int do_one_broadcast(struct sock *sk,
-				   struct netlink_broadcast_data *p)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-	int val;
-
-	if (p->exclude_sk == sk)
-		goto out;
-
-	if (nlk->pid == p->pid || p->group - 1 >= nlk->ngroups ||
-	    !test_bit(p->group - 1, nlk->groups))
-		goto out;
-
-	if (!net_eq(sock_net(sk), p->net))
-		goto out;
-
-	if (p->failure) {
-		netlink_overrun(sk);
-		goto out;
-	}
-
-	sock_hold(sk);
-	if (p->skb2 == NULL) {
-		if (skb_shared(p->skb)) {
-			p->skb2 = skb_clone(p->skb, p->allocation);
-		} else {
-			p->skb2 = skb_get(p->skb);
-			/*
-			 * skb ownership may have been set when
-			 * delivered to a previous socket.
-			 */
-			skb_orphan(p->skb2);
-		}
-	}
-	if (p->skb2 == NULL) {
-		netlink_overrun(sk);
-		/* Clone failed. Notify ALL listeners. */
-		p->failure = 1;
-	} else if (sk_filter(sk, p->skb2)) {
-		kfree_skb(p->skb2);
-		p->skb2 = NULL;
-	} else if ((val = netlink_broadcast_deliver(sk, p->skb2)) < 0) {
-		netlink_overrun(sk);
-	} else {
-		p->congested |= val;
-		p->delivered = 1;
-		p->skb2 = NULL;
-	}
-	sock_put(sk);
-
-out:
-	return 0;
-}
-
-int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
-		      u32 group, gfp_t allocation)
-{
-	struct net *net = sock_net(ssk);
-	struct netlink_broadcast_data info;
-	struct hlist_node *node;
-	struct sock *sk;
-
-	skb = netlink_trim(skb, allocation);
-
-	info.exclude_sk = ssk;
-	info.net = net;
-	info.pid = pid;
-	info.group = group;
-	info.failure = 0;
-	info.congested = 0;
-	info.delivered = 0;
-	info.allocation = allocation;
-	info.skb = skb;
-	info.skb2 = NULL;
-
-	/* While we sleep in clone, do not allow to change socket list */
-
-	netlink_lock_table();
-
-	sk_for_each_bound(sk, node, &nl_table[ssk->sk_protocol].mc_list)
-		do_one_broadcast(sk, &info);
-
-	kfree_skb(skb);
-
-	netlink_unlock_table();
-
-	if (info.skb2)
-		kfree_skb(info.skb2);
-
-	if (info.delivered) {
-		if (info.congested && (allocation & __GFP_WAIT))
-			yield();
-		return 0;
-	}
-	if (info.failure)
-		return -ENOBUFS;
-	return -ESRCH;
-}
-EXPORT_SYMBOL(netlink_broadcast);
-
-struct netlink_set_err_data {
-	struct sock *exclude_sk;
-	u32 pid;
-	u32 group;
-	int code;
-};
-
-static inline int do_one_set_err(struct sock *sk,
-				 struct netlink_set_err_data *p)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-
-	if (sk == p->exclude_sk)
-		goto out;
-
-	if (sock_net(sk) != sock_net(p->exclude_sk))
-		goto out;
-
-	if (nlk->pid == p->pid || p->group - 1 >= nlk->ngroups ||
-	    !test_bit(p->group - 1, nlk->groups))
-		goto out;
-
-	sk->sk_err = p->code;
-	sk->sk_error_report(sk);
-out:
-	return 0;
-}
-
-/**
- * netlink_set_err - report error to broadcast listeners
- * @ssk: the kernel netlink socket, as returned by netlink_kernel_create()
- * @pid: the PID of a process that we want to skip (if any)
- * @groups: the broadcast group that will notice the error
- * @code: error code, must be negative (as usual in kernelspace)
- */
-void netlink_set_err(struct sock *ssk, u32 pid, u32 group, int code)
-{
-	struct netlink_set_err_data info;
-	struct hlist_node *node;
-	struct sock *sk;
-
-	info.exclude_sk = ssk;
-	info.pid = pid;
-	info.group = group;
-	/* sk->sk_err wants a positive error value */
-	info.code = -code;
-
-	read_lock(&nl_table_lock);
-
-	sk_for_each_bound(sk, node, &nl_table[ssk->sk_protocol].mc_list)
-		do_one_set_err(sk, &info);
-
-	read_unlock(&nl_table_lock);
-}
-
-/* must be called with netlink table grabbed */
-static void netlink_update_socket_mc(struct netlink_sock *nlk,
-				     unsigned int group,
-				     int is_new)
-{
-	int old, new = !!is_new, subscriptions;
-
-	old = test_bit(group - 1, nlk->groups);
-	subscriptions = nlk->subscriptions - old + new;
-	if (new)
-		__set_bit(group - 1, nlk->groups);
-	else
-		__clear_bit(group - 1, nlk->groups);
-	netlink_update_subscriptions(&nlk->sk, subscriptions);
-	netlink_update_listeners(&nlk->sk);
-}
-
-static int netlink_setsockopt(struct socket *sock, int level, int optname,
-			      char __user *optval, int optlen)
-{
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk = nlk_sk(sk);
-	unsigned int val = 0;
-	int err;
-
-	if (level != SOL_NETLINK)
-		return -ENOPROTOOPT;
-
-	if (optlen >= sizeof(int) &&
-	    get_user(val, (unsigned int __user *)optval))
-		return -EFAULT;
-
-	switch (optname) {
-	case NETLINK_PKTINFO:
-		if (val)
-			nlk->flags |= NETLINK_RECV_PKTINFO;
-		else
-			nlk->flags &= ~NETLINK_RECV_PKTINFO;
-		err = 0;
-		break;
-	case NETLINK_ADD_MEMBERSHIP:
-	case NETLINK_DROP_MEMBERSHIP: {
-		if (!netlink_capable(sock, NL_NONROOT_RECV))
-			return -EPERM;
-		err = netlink_realloc_groups(sk);
-		if (err)
-			return err;
-		if (!val || val - 1 >= nlk->ngroups)
-			return -EINVAL;
-		netlink_table_grab();
-		netlink_update_socket_mc(nlk, val,
-					 optname == NETLINK_ADD_MEMBERSHIP);
-		netlink_table_ungrab();
-		err = 0;
-		break;
-	}
-	default:
-		err = -ENOPROTOOPT;
-	}
-	return err;
-}
-
-static int netlink_getsockopt(struct socket *sock, int level, int optname,
-			      char __user *optval, int __user *optlen)
-{
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk = nlk_sk(sk);
-	int len, val, err;
-
-	if (level != SOL_NETLINK)
-		return -ENOPROTOOPT;
-
-	if (get_user(len, optlen))
-		return -EFAULT;
-	if (len < 0)
-		return -EINVAL;
-
-	switch (optname) {
-	case NETLINK_PKTINFO:
-		if (len < sizeof(int))
-			return -EINVAL;
-		len = sizeof(int);
-		val = nlk->flags & NETLINK_RECV_PKTINFO ? 1 : 0;
-		if (put_user(len, optlen) ||
-		    put_user(val, optval))
-			return -EFAULT;
-		err = 0;
-		break;
-	default:
-		err = -ENOPROTOOPT;
-	}
-	return err;
-}
-
-static void netlink_cmsg_recv_pktinfo(struct msghdr *msg, struct sk_buff *skb)
-{
-	struct nl_pktinfo info;
-
-	info.group = NETLINK_CB(skb).dst_group;
-	put_cmsg(msg, SOL_NETLINK, NETLINK_PKTINFO, sizeof(info), &info);
-}
-
-static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
-			   struct msghdr *msg, size_t len)
-{
-	struct sock_iocb *siocb = kiocb_to_siocb(kiocb);
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk = nlk_sk(sk);
-	struct sockaddr_nl *addr = msg->msg_name;
-	u32 dst_pid;
-	u32 dst_group;
-	struct sk_buff *skb;
-	int err;
-	struct scm_cookie scm;
-
-	if (msg->msg_flags&MSG_OOB)
-		return -EOPNOTSUPP;
-
-	if (NULL == siocb->scm)
-		siocb->scm = &scm;
-	err = scm_send(sock, msg, siocb->scm);
-	if (err < 0)
-		return err;
-
-	if (msg->msg_namelen) {
-		if (addr->nl_family != AF_NETLINK)
-			return -EINVAL;
-		dst_pid = addr->nl_pid;
-		dst_group = ffs(addr->nl_groups);
-		if (dst_group && !netlink_capable(sock, NL_NONROOT_SEND))
-			return -EPERM;
-	} else {
-		dst_pid = nlk->dst_pid;
-		dst_group = nlk->dst_group;
-	}
-
-	if (!nlk->pid) {
-		err = netlink_autobind(sock);
-		if (err)
-			goto out;
-	}
-
-	err = -EMSGSIZE;
-	if (len > sk->sk_sndbuf - 32)
-		goto out;
-	err = -ENOBUFS;
-	skb = alloc_skb(len, GFP_KERNEL);
-	if (skb == NULL)
-		goto out;
-
-	NETLINK_CB(skb).pid	= nlk->pid;
-	NETLINK_CB(skb).dst_group = dst_group;
-	NETLINK_CB(skb).loginuid = audit_get_loginuid(current);
-	NETLINK_CB(skb).sessionid = audit_get_sessionid(current);
-	security_task_getsecid(current, &(NETLINK_CB(skb).sid));
-	memcpy(NETLINK_CREDS(skb), &siocb->scm->creds, sizeof(struct ucred));
-
-	/* What can I do? Netlink is asynchronous, so that
-	   we will have to save current capabilities to
-	   check them, when this message will be delivered
-	   to corresponding kernel module.   --ANK (980802)
-	 */
-
-	err = -EFAULT;
-	if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
-		kfree_skb(skb);
-		goto out;
-	}
-
-	err = security_netlink_send(sk, skb);
-	if (err) {
-		kfree_skb(skb);
-		goto out;
-	}
-
-	if (dst_group) {
-		atomic_inc(&skb->users);
-		netlink_broadcast(sk, skb, dst_pid, dst_group, GFP_KERNEL);
-	}
-	err = netlink_unicast(sk, skb, dst_pid, msg->msg_flags&MSG_DONTWAIT);
-
-out:
-	return err;
-}
-
-static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
-			   struct msghdr *msg, size_t len,
-			   int flags)
-{
-	struct sock_iocb *siocb = kiocb_to_siocb(kiocb);
-	struct scm_cookie scm;
-	struct sock *sk = sock->sk;
-	struct netlink_sock *nlk = nlk_sk(sk);
-	int noblock = flags&MSG_DONTWAIT;
-	size_t copied;
-	struct sk_buff *skb;
-	int err;
-
-	if (flags&MSG_OOB)
-		return -EOPNOTSUPP;
-
-	copied = 0;
-
-	skb = skb_recv_datagram(sk, flags, noblock, &err);
-	if (skb == NULL)
-		goto out;
-
-	msg->msg_namelen = 0;
-
-	copied = skb->len;
-	if (len < copied) {
-		msg->msg_flags |= MSG_TRUNC;
-		copied = len;
-	}
-
-	skb_reset_transport_header(skb);
-	err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
-
-	if (msg->msg_name) {
-		struct sockaddr_nl *addr = (struct sockaddr_nl *)msg->msg_name;
-		addr->nl_family = AF_NETLINK;
-		addr->nl_pad    = 0;
-		addr->nl_pid	= NETLINK_CB(skb).pid;
-		addr->nl_groups	= netlink_group_mask(NETLINK_CB(skb).dst_group);
-		msg->msg_namelen = sizeof(*addr);
-	}
-
-	if (nlk->flags & NETLINK_RECV_PKTINFO)
-		netlink_cmsg_recv_pktinfo(msg, skb);
-
-	if (NULL == siocb->scm) {
-		memset(&scm, 0, sizeof(scm));
-		siocb->scm = &scm;
-	}
-	siocb->scm->creds = *NETLINK_CREDS(skb);
-	if (flags & MSG_TRUNC)
-		copied = skb->len;
-	skb_free_datagram(sk, skb);
-
-	if (nlk->cb && atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf / 2)
-		netlink_dump(sk);
-
-	scm_recv(sock, msg, siocb->scm, flags);
-out:
-	netlink_rcv_wake(sk);
-	return err ? : copied;
-}
-
-static void netlink_data_ready(struct sock *sk, int len)
-{
-	BUG();
-}
-
-/*
- *	We export these functions to other modules. They provide a
- *	complete set of kernel non-blocking support for message
- *	queueing.
- */
-
-struct sock *
-netlink_kernel_create(struct net *net, int unit, unsigned int groups,
-		      void (*input)(struct sk_buff *skb),
-		      struct mutex *cb_mutex, struct module *module)
-{
-	struct socket *sock;
-	struct sock *sk;
-	struct netlink_sock *nlk;
-	unsigned long *listeners = NULL;
-
-	BUG_ON(!nl_table);
-
-	if (unit < 0 || unit >= MAX_LINKS)
-		return NULL;
-
-	if (sock_create_lite(PF_NETLINK, SOCK_DGRAM, unit, &sock))
-		return NULL;
-
-	/*
-	 * We have to just have a reference on the net from sk, but don't
-	 * get_net it. Besides, we cannot get and then put the net here.
-	 * So we create one inside init_net and the move it to net.
-	 */
-
-	if (__netlink_create(&init_net, sock, cb_mutex, unit) < 0)
-		goto out_sock_release_nosk;
-
-	sk = sock->sk;
-	sk_change_net(sk, net);
-
-	if (groups < 32)
-		groups = 32;
-
-	listeners = kzalloc(NLGRPSZ(groups), GFP_KERNEL);
-	if (!listeners)
-		goto out_sock_release;
-
-	sk->sk_data_ready = netlink_data_ready;
-	if (input)
-		nlk_sk(sk)->netlink_rcv = input;
-
-	if (netlink_insert(sk, net, 0))
-		goto out_sock_release;
-
-	nlk = nlk_sk(sk);
-	nlk->flags |= NETLINK_KERNEL_SOCKET;
-
-	netlink_table_grab();
-	if (!nl_table[unit].registered) {
-		nl_table[unit].groups = groups;
-		nl_table[unit].listeners = listeners;
-		nl_table[unit].cb_mutex = cb_mutex;
-		nl_table[unit].module = module;
-		nl_table[unit].registered = 1;
-	} else {
-		kfree(listeners);
-		nl_table[unit].registered++;
-	}
-	netlink_table_ungrab();
-	return sk;
-
-out_sock_release:
-	kfree(listeners);
-	netlink_kernel_release(sk);
-	return NULL;
-
-out_sock_release_nosk:
-	sock_release(sock);
-	return NULL;
-}
-EXPORT_SYMBOL(netlink_kernel_create);
-
-
-void
-netlink_kernel_release(struct sock *sk)
-{
-	sk_release_kernel(sk);
-}
-EXPORT_SYMBOL(netlink_kernel_release);
-
-
-/**
- * netlink_change_ngroups - change number of multicast groups
- *
- * This changes the number of multicast groups that are available
- * on a certain netlink family. Note that it is not possible to
- * change the number of groups to below 32. Also note that it does
- * not implicitly call netlink_clear_multicast_users() when the
- * number of groups is reduced.
- *
- * @sk: The kernel netlink socket, as returned by netlink_kernel_create().
- * @groups: The new number of groups.
- */
-int netlink_change_ngroups(struct sock *sk, unsigned int groups)
-{
-	unsigned long *listeners, *old = NULL;
-	struct netlink_table *tbl = &nl_table[sk->sk_protocol];
-	int err = 0;
-
-	if (groups < 32)
-		groups = 32;
-
-	netlink_table_grab();
-	if (NLGRPSZ(tbl->groups) < NLGRPSZ(groups)) {
-		listeners = kzalloc(NLGRPSZ(groups), GFP_ATOMIC);
-		if (!listeners) {
-			err = -ENOMEM;
-			goto out_ungrab;
-		}
-		old = tbl->listeners;
-		memcpy(listeners, old, NLGRPSZ(tbl->groups));
-		rcu_assign_pointer(tbl->listeners, listeners);
-	}
-	tbl->groups = groups;
-
- out_ungrab:
-	netlink_table_ungrab();
-	synchronize_rcu();
-	kfree(old);
-	return err;
-}
-EXPORT_SYMBOL(netlink_change_ngroups);
-
-/**
- * netlink_clear_multicast_users - kick off multicast listeners
- *
- * This function removes all listeners from the given group.
- * @ksk: The kernel netlink socket, as returned by
- *	netlink_kernel_create().
- * @group: The multicast group to clear.
- */
-void netlink_clear_multicast_users(struct sock *ksk, unsigned int group)
-{
-	struct sock *sk;
-	struct hlist_node *node;
-	struct netlink_table *tbl = &nl_table[ksk->sk_protocol];
-
-	netlink_table_grab();
-
-	sk_for_each_bound(sk, node, &tbl->mc_list)
-		netlink_update_socket_mc(nlk_sk(sk), group, 0);
-
-	netlink_table_ungrab();
-}
-EXPORT_SYMBOL(netlink_clear_multicast_users);
-
-void netlink_set_nonroot(int protocol, unsigned int flags)
-{
-	if ((unsigned int)protocol < MAX_LINKS)
-		nl_table[protocol].nl_nonroot = flags;
-}
-EXPORT_SYMBOL(netlink_set_nonroot);
-
-static void netlink_destroy_callback(struct netlink_callback *cb)
-{
-	if (cb->skb)
-		kfree_skb(cb->skb);
-	kfree(cb);
-}
-
-/*
- * It looks a bit ugly.
- * It would be better to create kernel thread.
- */
-
-static int netlink_dump(struct sock *sk)
-{
-	struct netlink_sock *nlk = nlk_sk(sk);
-	struct netlink_callback *cb;
-	struct sk_buff *skb;
-	struct nlmsghdr *nlh;
-	int len, err = -ENOBUFS;
-
-	skb = sock_rmalloc(sk, NLMSG_GOODSIZE, 0, GFP_KERNEL);
-	if (!skb)
-		goto errout;
-
-	mutex_lock(nlk->cb_mutex);
-
-	cb = nlk->cb;
-	if (cb == NULL) {
-		err = -EINVAL;
-		goto errout_skb;
-	}
-
-	len = cb->dump(skb, cb);
-
-	if (len > 0) {
-		mutex_unlock(nlk->cb_mutex);
-
-		if (sk_filter(sk, skb))
-			kfree_skb(skb);
-		else {
-			skb_queue_tail(&sk->sk_receive_queue, skb);
-			sk->sk_data_ready(sk, skb->len);
-		}
-		return 0;
-	}
-
-	nlh = nlmsg_put_answer(skb, cb, NLMSG_DONE, sizeof(len), NLM_F_MULTI);
-	if (!nlh)
-		goto errout_skb;
-
-	memcpy(nlmsg_data(nlh), &len, sizeof(len));
-
-	if (sk_filter(sk, skb))
-		kfree_skb(skb);
-	else {
-		skb_queue_tail(&sk->sk_receive_queue, skb);
-		sk->sk_data_ready(sk, skb->len);
-	}
-
-	if (cb->done)
-		cb->done(cb);
-	nlk->cb = NULL;
-	mutex_unlock(nlk->cb_mutex);
-
-	netlink_destroy_callback(cb);
-	return 0;
-
-errout_skb:
-	mutex_unlock(nlk->cb_mutex);
-	kfree_skb(skb);
-errout:
-	return err;
-}
-
-int netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
-		       struct nlmsghdr *nlh,
-		       int (*dump)(struct sk_buff *skb,
-				   struct netlink_callback *),
-		       int (*done)(struct netlink_callback *))
-{
-#ifdef DDE_LINUX
-	return -ENOBUFS;
-#else
-	struct netlink_callback *cb;
-	struct sock *sk;
-	struct netlink_sock *nlk;
-
-	cb = kzalloc(sizeof(*cb), GFP_KERNEL);
-	if (cb == NULL)
-		return -ENOBUFS;
-
-	cb->dump = dump;
-	cb->done = done;
-	cb->nlh = nlh;
-	atomic_inc(&skb->users);
-	cb->skb = skb;
-
-	sk = netlink_lookup(sock_net(ssk), ssk->sk_protocol, NETLINK_CB(skb).pid);
-	if (sk == NULL) {
-		netlink_destroy_callback(cb);
-		return -ECONNREFUSED;
-	}
-	nlk = nlk_sk(sk);
-	/* A dump is in progress... */
-	mutex_lock(nlk->cb_mutex);
-	if (nlk->cb) {
-		mutex_unlock(nlk->cb_mutex);
-		netlink_destroy_callback(cb);
-		sock_put(sk);
-		return -EBUSY;
-	}
-	nlk->cb = cb;
-	mutex_unlock(nlk->cb_mutex);
-
-	netlink_dump(sk);
-	sock_put(sk);
-
-	/* We successfully started a dump, by returning -EINTR we
-	 * signal not to send ACK even if it was requested.
-	 */
-	return -EINTR;
-#endif
-}
-EXPORT_SYMBOL(netlink_dump_start);
-
-void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err)
-{
-	struct sk_buff *skb;
-	struct nlmsghdr *rep;
-	struct nlmsgerr *errmsg;
-	size_t payload = sizeof(*errmsg);
-
-	/* error messages get the original request appened */
-	if (err)
-		payload += nlmsg_len(nlh);
-
-	skb = nlmsg_new(payload, GFP_KERNEL);
-	if (!skb) {
-		struct sock *sk;
-
-		sk = netlink_lookup(sock_net(in_skb->sk),
-				    in_skb->sk->sk_protocol,
-				    NETLINK_CB(in_skb).pid);
-		if (sk) {
-			sk->sk_err = ENOBUFS;
-			sk->sk_error_report(sk);
-			sock_put(sk);
-		}
-		return;
-	}
-
-	rep = __nlmsg_put(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
-			  NLMSG_ERROR, sizeof(struct nlmsgerr), 0);
-	errmsg = nlmsg_data(rep);
-	errmsg->error = err;
-	memcpy(&errmsg->msg, nlh, err ? nlh->nlmsg_len : sizeof(*nlh));
-	netlink_unicast(in_skb->sk, skb, NETLINK_CB(in_skb).pid, MSG_DONTWAIT);
-}
-EXPORT_SYMBOL(netlink_ack);
-
-int netlink_rcv_skb(struct sk_buff *skb, int (*cb)(struct sk_buff *,
-						     struct nlmsghdr *))
-{
-	struct nlmsghdr *nlh;
-	int err;
-
-	while (skb->len >= nlmsg_total_size(0)) {
-		int msglen;
-
-		nlh = nlmsg_hdr(skb);
-		err = 0;
-
-		if (nlh->nlmsg_len < NLMSG_HDRLEN || skb->len < nlh->nlmsg_len)
-			return 0;
-
-		/* Only requests are handled by the kernel */
-		if (!(nlh->nlmsg_flags & NLM_F_REQUEST))
-			goto ack;
-
-		/* Skip control messages */
-		if (nlh->nlmsg_type < NLMSG_MIN_TYPE)
-			goto ack;
-
-		err = cb(skb, nlh);
-		if (err == -EINTR)
-			goto skip;
-
-ack:
-		if (nlh->nlmsg_flags & NLM_F_ACK || err)
-			netlink_ack(skb, nlh, err);
-
-skip:
-		msglen = NLMSG_ALIGN(nlh->nlmsg_len);
-		if (msglen > skb->len)
-			msglen = skb->len;
-		skb_pull(skb, msglen);
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(netlink_rcv_skb);
-
-/**
- * nlmsg_notify - send a notification netlink message
- * @sk: netlink socket to use
- * @skb: notification message
- * @pid: destination netlink pid for reports or 0
- * @group: destination multicast group or 0
- * @report: 1 to report back, 0 to disable
- * @flags: allocation flags
- */
-int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 pid,
-		 unsigned int group, int report, gfp_t flags)
-{
-	int err = 0;
-
-	if (group) {
-		int exclude_pid = 0;
-
-		if (report) {
-			atomic_inc(&skb->users);
-			exclude_pid = pid;
-		}
-
-		/* errors reported via destination sk->sk_err */
-		nlmsg_multicast(sk, skb, exclude_pid, group, flags);
-	}
-
-	if (report)
-		err = nlmsg_unicast(sk, skb, pid);
-
-	return err;
-}
-EXPORT_SYMBOL(nlmsg_notify);
-
-#ifdef CONFIG_PROC_FS
-struct nl_seq_iter {
-	struct seq_net_private p;
-	int link;
-	int hash_idx;
-};
-
-static struct sock *netlink_seq_socket_idx(struct seq_file *seq, loff_t pos)
-{
-	struct nl_seq_iter *iter = seq->private;
-	int i, j;
-	struct sock *s;
-	struct hlist_node *node;
-	loff_t off = 0;
-
-	for (i = 0; i < MAX_LINKS; i++) {
-		struct nl_pid_hash *hash = &nl_table[i].hash;
-
-		for (j = 0; j <= hash->mask; j++) {
-			sk_for_each(s, node, &hash->table[j]) {
-				if (sock_net(s) != seq_file_net(seq))
-					continue;
-				if (off == pos) {
-					iter->link = i;
-					iter->hash_idx = j;
-					return s;
-				}
-				++off;
-			}
-		}
-	}
-	return NULL;
-}
-
-static void *netlink_seq_start(struct seq_file *seq, loff_t *pos)
-	__acquires(nl_table_lock)
-{
-	read_lock(&nl_table_lock);
-	return *pos ? netlink_seq_socket_idx(seq, *pos - 1) : SEQ_START_TOKEN;
-}
-
-static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
-	struct sock *s;
-	struct nl_seq_iter *iter;
-	int i, j;
-
-	++*pos;
-
-	if (v == SEQ_START_TOKEN)
-		return netlink_seq_socket_idx(seq, 0);
-
-	iter = seq->private;
-	s = v;
-	do {
-		s = sk_next(s);
-	} while (s && sock_net(s) != seq_file_net(seq));
-	if (s)
-		return s;
-
-	i = iter->link;
-	j = iter->hash_idx + 1;
-
-	do {
-		struct nl_pid_hash *hash = &nl_table[i].hash;
-
-		for (; j <= hash->mask; j++) {
-			s = sk_head(&hash->table[j]);
-			while (s && sock_net(s) != seq_file_net(seq))
-				s = sk_next(s);
-			if (s) {
-				iter->link = i;
-				iter->hash_idx = j;
-				return s;
-			}
-		}
-
-		j = 0;
-	} while (++i < MAX_LINKS);
-
-	return NULL;
-}
-
-static void netlink_seq_stop(struct seq_file *seq, void *v)
-	__releases(nl_table_lock)
-{
-	read_unlock(&nl_table_lock);
-}
-
-
-static int netlink_seq_show(struct seq_file *seq, void *v)
-{
-	if (v == SEQ_START_TOKEN)
-		seq_puts(seq,
-			 "sk       Eth Pid    Groups   "
-			 "Rmem     Wmem     Dump     Locks\n");
-	else {
-		struct sock *s = v;
-		struct netlink_sock *nlk = nlk_sk(s);
-
-		seq_printf(seq, "%p %-3d %-6d %08x %-8d %-8d %p %d\n",
-			   s,
-			   s->sk_protocol,
-			   nlk->pid,
-			   nlk->groups ? (u32)nlk->groups[0] : 0,
-			   atomic_read(&s->sk_rmem_alloc),
-			   atomic_read(&s->sk_wmem_alloc),
-			   nlk->cb,
-			   atomic_read(&s->sk_refcnt)
-			);
-
-	}
-	return 0;
-}
-
-static const struct seq_operations netlink_seq_ops = {
-	.start  = netlink_seq_start,
-	.next   = netlink_seq_next,
-	.stop   = netlink_seq_stop,
-	.show   = netlink_seq_show,
-};
-
-
-static int netlink_seq_open(struct inode *inode, struct file *file)
-{
-	return seq_open_net(inode, file, &netlink_seq_ops,
-				sizeof(struct nl_seq_iter));
-}
-
-static const struct file_operations netlink_seq_fops = {
-	.owner		= THIS_MODULE,
-	.open		= netlink_seq_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release_net,
-};
-
-#endif
-
-int netlink_register_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&netlink_chain, nb);
-}
-EXPORT_SYMBOL(netlink_register_notifier);
-
-int netlink_unregister_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_unregister(&netlink_chain, nb);
-}
-EXPORT_SYMBOL(netlink_unregister_notifier);
-
-static const struct proto_ops netlink_ops = {
-	.family =	PF_NETLINK,
-	.owner =	THIS_MODULE,
-	.release =	netlink_release,
-	.bind =		netlink_bind,
-	.connect =	netlink_connect,
-	.socketpair =	sock_no_socketpair,
-	.accept =	sock_no_accept,
-	.getname =	netlink_getname,
-	.poll =		datagram_poll,
-	.ioctl =	sock_no_ioctl,
-	.listen =	sock_no_listen,
-	.shutdown =	sock_no_shutdown,
-	.setsockopt =	netlink_setsockopt,
-	.getsockopt =	netlink_getsockopt,
-	.sendmsg =	netlink_sendmsg,
-	.recvmsg =	netlink_recvmsg,
-	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
-};
-
-static struct net_proto_family netlink_family_ops = {
-	.family = PF_NETLINK,
-	.create = netlink_create,
-	.owner	= THIS_MODULE,	/* for consistency 8) */
-};
-
-static int __net_init netlink_net_init(struct net *net)
-{
-#ifdef CONFIG_PROC_FS
-	if (!proc_net_fops_create(net, "netlink", 0, &netlink_seq_fops))
-		return -ENOMEM;
-#endif
-	return 0;
-}
-
-static void __net_exit netlink_net_exit(struct net *net)
-{
-#ifdef CONFIG_PROC_FS
-	proc_net_remove(net, "netlink");
-#endif
-}
-
-static struct pernet_operations __net_initdata netlink_net_ops = {
-	.init = netlink_net_init,
-	.exit = netlink_net_exit,
-};
-
-static int __init netlink_proto_init(void)
-{
-	struct sk_buff *dummy_skb;
-	int i;
-	unsigned long limit;
-	unsigned int order;
-	int err = proto_register(&netlink_proto, 0);
-
-	if (err != 0)
-		goto out;
-
-	BUILD_BUG_ON(sizeof(struct netlink_skb_parms) > sizeof(dummy_skb->cb));
-
-	nl_table = kcalloc(MAX_LINKS, sizeof(*nl_table), GFP_KERNEL);
-	if (!nl_table)
-		goto panic;
-
-	if (num_physpages >= (128 * 1024))
-		limit = num_physpages >> (21 - PAGE_SHIFT);
-	else
-		limit = num_physpages >> (23 - PAGE_SHIFT);
-
-	order = get_bitmask_order(limit) - 1 + PAGE_SHIFT;
-	limit = (1UL << order) / sizeof(struct hlist_head);
-	order = get_bitmask_order(min(limit, (unsigned long)UINT_MAX)) - 1;
-
-	for (i = 0; i < MAX_LINKS; i++) {
-		struct nl_pid_hash *hash = &nl_table[i].hash;
-
-		hash->table = nl_pid_hash_zalloc(1 * sizeof(*hash->table));
-		if (!hash->table) {
-			while (i-- > 0)
-				nl_pid_hash_free(nl_table[i].hash.table,
-						 1 * sizeof(*hash->table));
-			kfree(nl_table);
-			goto panic;
-		}
-		hash->max_shift = order;
-		hash->shift = 0;
-		hash->mask = 0;
-		hash->rehash_time = jiffies;
-	}
-
-	sock_register(&netlink_family_ops);
-	register_pernet_subsys(&netlink_net_ops);
-	/* The netlink device handler may be needed early. */
-	rtnetlink_init();
-out:
-	return err;
-panic:
-	panic("netlink_init: Cannot allocate nl_table\n");
-}
-
-core_initcall(netlink_proto_init);