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-rw-r--r--libdde-linux26/contrib/include/net/ipv6.h617
1 files changed, 617 insertions, 0 deletions
diff --git a/libdde-linux26/contrib/include/net/ipv6.h b/libdde-linux26/contrib/include/net/ipv6.h
new file mode 100644
index 00000000..6d5b58a1
--- /dev/null
+++ b/libdde-linux26/contrib/include/net/ipv6.h
@@ -0,0 +1,617 @@
+/*
+ * Linux INET6 implementation
+ *
+ * Authors:
+ * Pedro Roque <roque@di.fc.ul.pt>
+ *
+ * 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.
+ */
+
+#ifndef _NET_IPV6_H
+#define _NET_IPV6_H
+
+#include <linux/ipv6.h>
+#include <linux/hardirq.h>
+#include <net/if_inet6.h>
+#include <net/ndisc.h>
+#include <net/flow.h>
+#include <net/snmp.h>
+
+#define SIN6_LEN_RFC2133 24
+
+#define IPV6_MAXPLEN 65535
+
+/*
+ * NextHeader field of IPv6 header
+ */
+
+#define NEXTHDR_HOP 0 /* Hop-by-hop option header. */
+#define NEXTHDR_TCP 6 /* TCP segment. */
+#define NEXTHDR_UDP 17 /* UDP message. */
+#define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */
+#define NEXTHDR_ROUTING 43 /* Routing header. */
+#define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */
+#define NEXTHDR_ESP 50 /* Encapsulating security payload. */
+#define NEXTHDR_AUTH 51 /* Authentication header. */
+#define NEXTHDR_ICMP 58 /* ICMP for IPv6. */
+#define NEXTHDR_NONE 59 /* No next header */
+#define NEXTHDR_DEST 60 /* Destination options header. */
+#define NEXTHDR_MOBILITY 135 /* Mobility header. */
+
+#define NEXTHDR_MAX 255
+
+
+
+#define IPV6_DEFAULT_HOPLIMIT 64
+#define IPV6_DEFAULT_MCASTHOPS 1
+
+/*
+ * Addr type
+ *
+ * type - unicast | multicast
+ * scope - local | site | global
+ * v4 - compat
+ * v4mapped
+ * any
+ * loopback
+ */
+
+#define IPV6_ADDR_ANY 0x0000U
+
+#define IPV6_ADDR_UNICAST 0x0001U
+#define IPV6_ADDR_MULTICAST 0x0002U
+
+#define IPV6_ADDR_LOOPBACK 0x0010U
+#define IPV6_ADDR_LINKLOCAL 0x0020U
+#define IPV6_ADDR_SITELOCAL 0x0040U
+
+#define IPV6_ADDR_COMPATv4 0x0080U
+
+#define IPV6_ADDR_SCOPE_MASK 0x00f0U
+
+#define IPV6_ADDR_MAPPED 0x1000U
+#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
+
+/*
+ * Addr scopes
+ */
+#ifdef __KERNEL__
+#define IPV6_ADDR_MC_SCOPE(a) \
+ ((a)->s6_addr[1] & 0x0f) /* nonstandard */
+#define __IPV6_ADDR_SCOPE_INVALID -1
+#endif
+#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
+#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
+#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
+#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
+#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
+
+/*
+ * fragmentation header
+ */
+
+struct frag_hdr {
+ __u8 nexthdr;
+ __u8 reserved;
+ __be16 frag_off;
+ __be32 identification;
+};
+
+#define IP6_MF 0x0001
+
+#ifdef __KERNEL__
+
+#include <net/sock.h>
+
+/* sysctls */
+extern int sysctl_mld_max_msf;
+extern struct ctl_path net_ipv6_ctl_path[];
+
+#define _DEVINC(net, statname, modifier, idev, field) \
+({ \
+ struct inet6_dev *_idev = (idev); \
+ if (likely(_idev != NULL)) \
+ SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
+ SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
+})
+
+#define _DEVADD(net, statname, modifier, idev, field, val) \
+({ \
+ struct inet6_dev *_idev = (idev); \
+ if (likely(_idev != NULL)) \
+ SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
+ SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
+})
+
+/* MIBs */
+
+#define IP6_INC_STATS(net, idev,field) \
+ _DEVINC(net, ipv6, , idev, field)
+#define IP6_INC_STATS_BH(net, idev,field) \
+ _DEVINC(net, ipv6, _BH, idev, field)
+#define IP6_ADD_STATS_BH(net, idev,field,val) \
+ _DEVADD(net, ipv6, _BH, idev, field, val)
+
+#define ICMP6_INC_STATS(net, idev, field) \
+ _DEVINC(net, icmpv6, , idev, field)
+#define ICMP6_INC_STATS_BH(net, idev, field) \
+ _DEVINC(net, icmpv6, _BH, idev, field)
+
+#define ICMP6MSGOUT_INC_STATS(net, idev, field) \
+ _DEVINC(net, icmpv6msg, , idev, field +256)
+#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
+ _DEVINC(net, icmpv6msg, _BH, idev, field +256)
+#define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
+ _DEVINC(net, icmpv6msg, _BH, idev, field)
+
+struct ip6_ra_chain
+{
+ struct ip6_ra_chain *next;
+ struct sock *sk;
+ int sel;
+ void (*destructor)(struct sock *);
+};
+
+extern struct ip6_ra_chain *ip6_ra_chain;
+extern rwlock_t ip6_ra_lock;
+
+/*
+ This structure is prepared by protocol, when parsing
+ ancillary data and passed to IPv6.
+ */
+
+struct ipv6_txoptions
+{
+ /* Length of this structure */
+ int tot_len;
+
+ /* length of extension headers */
+
+ __u16 opt_flen; /* after fragment hdr */
+ __u16 opt_nflen; /* before fragment hdr */
+
+ struct ipv6_opt_hdr *hopopt;
+ struct ipv6_opt_hdr *dst0opt;
+ struct ipv6_rt_hdr *srcrt; /* Routing Header */
+ struct ipv6_opt_hdr *dst1opt;
+
+ /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
+};
+
+struct ip6_flowlabel
+{
+ struct ip6_flowlabel *next;
+ __be32 label;
+ atomic_t users;
+ struct in6_addr dst;
+ struct ipv6_txoptions *opt;
+ unsigned long linger;
+ u8 share;
+ u32 owner;
+ unsigned long lastuse;
+ unsigned long expires;
+ struct net *fl_net;
+};
+
+#define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF)
+#define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF)
+
+struct ipv6_fl_socklist
+{
+ struct ipv6_fl_socklist *next;
+ struct ip6_flowlabel *fl;
+};
+
+extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
+extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
+ struct ip6_flowlabel * fl,
+ struct ipv6_txoptions * fopt);
+extern void fl6_free_socklist(struct sock *sk);
+extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
+extern int ip6_flowlabel_init(void);
+extern void ip6_flowlabel_cleanup(void);
+
+static inline void fl6_sock_release(struct ip6_flowlabel *fl)
+{
+ if (fl)
+ atomic_dec(&fl->users);
+}
+
+extern int ip6_ra_control(struct sock *sk, int sel);
+
+extern int ipv6_parse_hopopts(struct sk_buff *skb);
+
+extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
+extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
+ int newtype,
+ struct ipv6_opt_hdr __user *newopt,
+ int newoptlen);
+struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+ struct ipv6_txoptions *opt);
+
+extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
+
+int ip6_frag_nqueues(struct net *net);
+int ip6_frag_mem(struct net *net);
+
+#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */
+
+extern int __ipv6_addr_type(const struct in6_addr *addr);
+static inline int ipv6_addr_type(const struct in6_addr *addr)
+{
+ return __ipv6_addr_type(addr) & 0xffff;
+}
+
+static inline int ipv6_addr_scope(const struct in6_addr *addr)
+{
+ return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
+}
+
+static inline int __ipv6_addr_src_scope(int type)
+{
+ return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
+}
+
+static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
+{
+ return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
+}
+
+static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
+{
+ return memcmp(a1, a2, sizeof(struct in6_addr));
+}
+
+static inline int
+ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
+ const struct in6_addr *a2)
+{
+ return (!!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
+ ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
+ ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
+ ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])));
+}
+
+static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
+{
+ memcpy(a1, a2, sizeof(struct in6_addr));
+}
+
+static inline void ipv6_addr_prefix(struct in6_addr *pfx,
+ const struct in6_addr *addr,
+ int plen)
+{
+ /* caller must guarantee 0 <= plen <= 128 */
+ int o = plen >> 3,
+ b = plen & 0x7;
+
+ memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
+ memcpy(pfx->s6_addr, addr, o);
+ if (b != 0)
+ pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
+}
+
+static inline void ipv6_addr_set(struct in6_addr *addr,
+ __be32 w1, __be32 w2,
+ __be32 w3, __be32 w4)
+{
+ addr->s6_addr32[0] = w1;
+ addr->s6_addr32[1] = w2;
+ addr->s6_addr32[2] = w3;
+ addr->s6_addr32[3] = w4;
+}
+
+static inline int ipv6_addr_equal(const struct in6_addr *a1,
+ const struct in6_addr *a2)
+{
+ return (((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
+ (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
+ (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
+ (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0);
+}
+
+static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
+ unsigned int prefixlen)
+{
+ unsigned pdw, pbi;
+
+ /* check complete u32 in prefix */
+ pdw = prefixlen >> 5;
+ if (pdw && memcmp(a1, a2, pdw << 2))
+ return 0;
+
+ /* check incomplete u32 in prefix */
+ pbi = prefixlen & 0x1f;
+ if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
+ return 0;
+
+ return 1;
+}
+
+static inline int ipv6_prefix_equal(const struct in6_addr *a1,
+ const struct in6_addr *a2,
+ unsigned int prefixlen)
+{
+ return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
+ prefixlen);
+}
+
+struct inet_frag_queue;
+
+struct ip6_create_arg {
+ __be32 id;
+ struct in6_addr *src;
+ struct in6_addr *dst;
+};
+
+void ip6_frag_init(struct inet_frag_queue *q, void *a);
+int ip6_frag_match(struct inet_frag_queue *q, void *a);
+
+static inline int ipv6_addr_any(const struct in6_addr *a)
+{
+ return ((a->s6_addr32[0] | a->s6_addr32[1] |
+ a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
+}
+
+static inline int ipv6_addr_loopback(const struct in6_addr *a)
+{
+ return ((a->s6_addr32[0] | a->s6_addr32[1] |
+ a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0);
+}
+
+static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
+{
+ return ((a->s6_addr32[0] | a->s6_addr32[1] |
+ (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0);
+}
+
+/*
+ * Check for a RFC 4843 ORCHID address
+ * (Overlay Routable Cryptographic Hash Identifiers)
+ */
+static inline int ipv6_addr_orchid(const struct in6_addr *a)
+{
+ return ((a->s6_addr32[0] & htonl(0xfffffff0))
+ == htonl(0x20010010));
+}
+
+static inline void ipv6_addr_set_v4mapped(const __be32 addr,
+ struct in6_addr *v4mapped)
+{
+ ipv6_addr_set(v4mapped,
+ 0, 0,
+ htonl(0x0000FFFF),
+ addr);
+}
+
+/*
+ * find the first different bit between two addresses
+ * length of address must be a multiple of 32bits
+ */
+static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
+{
+ const __be32 *a1 = token1, *a2 = token2;
+ int i;
+
+ addrlen >>= 2;
+
+ for (i = 0; i < addrlen; i++) {
+ __be32 xb = a1[i] ^ a2[i];
+ if (xb)
+ return i * 32 + 32 - fls(ntohl(xb));
+ }
+
+ /*
+ * we should *never* get to this point since that
+ * would mean the addrs are equal
+ *
+ * However, we do get to it 8) And exacly, when
+ * addresses are equal 8)
+ *
+ * ip route add 1111::/128 via ...
+ * ip route add 1111::/64 via ...
+ * and we are here.
+ *
+ * Ideally, this function should stop comparison
+ * at prefix length. It does not, but it is still OK,
+ * if returned value is greater than prefix length.
+ * --ANK (980803)
+ */
+ return (addrlen << 5);
+}
+
+static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
+{
+ return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
+}
+
+/*
+ * Prototypes exported by ipv6
+ */
+
+/*
+ * rcv function (called from netdevice level)
+ */
+
+extern int ipv6_rcv(struct sk_buff *skb,
+ struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev);
+
+extern int ip6_rcv_finish(struct sk_buff *skb);
+
+/*
+ * upper-layer output functions
+ */
+extern int ip6_xmit(struct sock *sk,
+ struct sk_buff *skb,
+ struct flowi *fl,
+ struct ipv6_txoptions *opt,
+ int ipfragok);
+
+extern int ip6_nd_hdr(struct sock *sk,
+ struct sk_buff *skb,
+ struct net_device *dev,
+ const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
+ int proto, int len);
+
+extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
+
+extern int ip6_append_data(struct sock *sk,
+ int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
+ void *from,
+ int length,
+ int transhdrlen,
+ int hlimit,
+ int tclass,
+ struct ipv6_txoptions *opt,
+ struct flowi *fl,
+ struct rt6_info *rt,
+ unsigned int flags);
+
+extern int ip6_push_pending_frames(struct sock *sk);
+
+extern void ip6_flush_pending_frames(struct sock *sk);
+
+extern int ip6_dst_lookup(struct sock *sk,
+ struct dst_entry **dst,
+ struct flowi *fl);
+extern int ip6_dst_blackhole(struct sock *sk,
+ struct dst_entry **dst,
+ struct flowi *fl);
+extern int ip6_sk_dst_lookup(struct sock *sk,
+ struct dst_entry **dst,
+ struct flowi *fl);
+
+/*
+ * skb processing functions
+ */
+
+extern int ip6_output(struct sk_buff *skb);
+extern int ip6_forward(struct sk_buff *skb);
+extern int ip6_input(struct sk_buff *skb);
+extern int ip6_mc_input(struct sk_buff *skb);
+
+extern int __ip6_local_out(struct sk_buff *skb);
+extern int ip6_local_out(struct sk_buff *skb);
+
+/*
+ * Extension header (options) processing
+ */
+
+extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
+ struct ipv6_txoptions *opt,
+ u8 *proto,
+ struct in6_addr **daddr_p);
+extern void ipv6_push_frag_opts(struct sk_buff *skb,
+ struct ipv6_txoptions *opt,
+ u8 *proto);
+
+extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
+ u8 *nexthdrp);
+
+extern int ipv6_ext_hdr(u8 nexthdr);
+
+extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
+
+/*
+ * socket options (ipv6_sockglue.c)
+ */
+
+extern int ipv6_setsockopt(struct sock *sk, int level,
+ int optname,
+ char __user *optval,
+ int optlen);
+extern int ipv6_getsockopt(struct sock *sk, int level,
+ int optname,
+ char __user *optval,
+ int __user *optlen);
+extern int compat_ipv6_setsockopt(struct sock *sk,
+ int level,
+ int optname,
+ char __user *optval,
+ int optlen);
+extern int compat_ipv6_getsockopt(struct sock *sk,
+ int level,
+ int optname,
+ char __user *optval,
+ int __user *optlen);
+
+extern int ip6_datagram_connect(struct sock *sk,
+ struct sockaddr *addr, int addr_len);
+
+extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
+extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
+ u32 info, u8 *payload);
+extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info);
+
+extern int inet6_release(struct socket *sock);
+extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
+ int addr_len);
+extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
+ int *uaddr_len, int peer);
+extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
+ unsigned long arg);
+
+extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
+ struct sock *sk);
+
+/*
+ * reassembly.c
+ */
+extern const struct proto_ops inet6_stream_ops;
+extern const struct proto_ops inet6_dgram_ops;
+
+struct group_source_req;
+struct group_filter;
+
+extern int ip6_mc_source(int add, int omode, struct sock *sk,
+ struct group_source_req *pgsr);
+extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
+extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
+ struct group_filter __user *optval,
+ int __user *optlen);
+extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
+ const struct in6_addr *daddr, u32 rnd);
+
+#ifdef CONFIG_PROC_FS
+extern int ac6_proc_init(struct net *net);
+extern void ac6_proc_exit(struct net *net);
+extern int raw6_proc_init(void);
+extern void raw6_proc_exit(void);
+extern int tcp6_proc_init(struct net *net);
+extern void tcp6_proc_exit(struct net *net);
+extern int udp6_proc_init(struct net *net);
+extern void udp6_proc_exit(struct net *net);
+extern int udplite6_proc_init(void);
+extern void udplite6_proc_exit(void);
+extern int ipv6_misc_proc_init(void);
+extern void ipv6_misc_proc_exit(void);
+extern int snmp6_register_dev(struct inet6_dev *idev);
+extern int snmp6_unregister_dev(struct inet6_dev *idev);
+
+#else
+static inline int ac6_proc_init(struct net *net) { return 0; }
+static inline void ac6_proc_exit(struct net *net) { }
+static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
+static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
+#endif
+
+#ifdef CONFIG_SYSCTL
+extern ctl_table ipv6_route_table_template[];
+extern ctl_table ipv6_icmp_table_template[];
+
+extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
+extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
+extern int ipv6_sysctl_register(void);
+extern void ipv6_sysctl_unregister(void);
+extern int ipv6_static_sysctl_register(void);
+extern void ipv6_static_sysctl_unregister(void);
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _NET_IPV6_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 08:39:47 +0000