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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Linux INET6 implementation
3 *
4 * Authors:
5 * Pedro Roque <roque@di.fc.ul.pt>
6 *
7 * $Id: ipv6.h,v 1.1 2002/05/20 15:13:07 jgrimm Exp $
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 */
14
15#ifndef _NET_IPV6_H
16#define _NET_IPV6_H
17
18#include <linux/ipv6.h>
19#include <linux/hardirq.h>
20#include <net/ndisc.h>
21#include <net/flow.h>
22#include <net/snmp.h>
23
24#define SIN6_LEN_RFC2133 24
25
26#define IPV6_MAXPLEN 65535
27
28/*
29 * NextHeader field of IPv6 header
30 */
31
32#define NEXTHDR_HOP 0 /* Hop-by-hop option header. */
33#define NEXTHDR_TCP 6 /* TCP segment. */
34#define NEXTHDR_UDP 17 /* UDP message. */
35#define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */
36#define NEXTHDR_ROUTING 43 /* Routing header. */
37#define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */
38#define NEXTHDR_ESP 50 /* Encapsulating security payload. */
39#define NEXTHDR_AUTH 51 /* Authentication header. */
40#define NEXTHDR_ICMP 58 /* ICMP for IPv6. */
41#define NEXTHDR_NONE 59 /* No next header */
42#define NEXTHDR_DEST 60 /* Destination options header. */
Masahide NAKAMURA2b741652006-08-23 20:34:26 -070043#define NEXTHDR_MOBILITY 135 /* Mobility header. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45#define NEXTHDR_MAX 255
46
47
48
49#define IPV6_DEFAULT_HOPLIMIT 64
50#define IPV6_DEFAULT_MCASTHOPS 1
51
52/*
53 * Addr type
54 *
55 * type - unicast | multicast
56 * scope - local | site | global
57 * v4 - compat
58 * v4mapped
59 * any
60 * loopback
61 */
62
63#define IPV6_ADDR_ANY 0x0000U
64
65#define IPV6_ADDR_UNICAST 0x0001U
66#define IPV6_ADDR_MULTICAST 0x0002U
67
68#define IPV6_ADDR_LOOPBACK 0x0010U
69#define IPV6_ADDR_LINKLOCAL 0x0020U
70#define IPV6_ADDR_SITELOCAL 0x0040U
71
72#define IPV6_ADDR_COMPATv4 0x0080U
73
74#define IPV6_ADDR_SCOPE_MASK 0x00f0U
75
76#define IPV6_ADDR_MAPPED 0x1000U
77#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
78
79/*
80 * Addr scopes
81 */
82#ifdef __KERNEL__
83#define IPV6_ADDR_MC_SCOPE(a) \
84 ((a)->s6_addr[1] & 0x0f) /* nonstandard */
85#define __IPV6_ADDR_SCOPE_INVALID -1
86#endif
87#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
88#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
89#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
90#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
91#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
92
93/*
94 * fragmentation header
95 */
96
97struct frag_hdr {
Al Viro44473a62006-11-08 00:21:46 -080098 __u8 nexthdr;
99 __u8 reserved;
100 __be16 frag_off;
101 __be32 identification;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102};
103
104#define IP6_MF 0x0001
105
106#ifdef __KERNEL__
107
108#include <net/sock.h>
109
110/* sysctls */
111extern int sysctl_ipv6_bindv6only;
112extern int sysctl_mld_max_msf;
113
114/* MIBs */
115DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900116#define IP6_INC_STATS(idev,field) ({ \
117 struct inet6_dev *_idev = (idev); \
118 if (likely(_idev != NULL)) \
119 SNMP_INC_STATS(_idev->stats.ipv6, field); \
120 SNMP_INC_STATS(ipv6_statistics, field); \
121})
122#define IP6_INC_STATS_BH(idev,field) ({ \
123 struct inet6_dev *_idev = (idev); \
124 if (likely(_idev != NULL)) \
125 SNMP_INC_STATS_BH(_idev->stats.ipv6, field); \
126 SNMP_INC_STATS_BH(ipv6_statistics, field); \
127})
128#define IP6_INC_STATS_USER(idev,field) ({ \
129 struct inet6_dev *_idev = (idev); \
130 if (likely(_idev != NULL)) \
131 SNMP_INC_STATS_USER(_idev->stats.ipv6, field); \
132 SNMP_INC_STATS_USER(ipv6_statistics, field); \
133})
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
135#define ICMP6_INC_STATS(idev, field) ({ \
136 struct inet6_dev *_idev = (idev); \
137 if (likely(_idev != NULL)) \
138 SNMP_INC_STATS(idev->stats.icmpv6, field); \
139 SNMP_INC_STATS(icmpv6_statistics, field); \
140})
141#define ICMP6_INC_STATS_BH(idev, field) ({ \
142 struct inet6_dev *_idev = (idev); \
143 if (likely(_idev != NULL)) \
144 SNMP_INC_STATS_BH((_idev)->stats.icmpv6, field); \
145 SNMP_INC_STATS_BH(icmpv6_statistics, field); \
146})
147#define ICMP6_INC_STATS_USER(idev, field) ({ \
148 struct inet6_dev *_idev = (idev); \
149 if (likely(_idev != NULL)) \
150 SNMP_INC_STATS_USER(_idev->stats.icmpv6, field); \
151 SNMP_INC_STATS_USER(icmpv6_statistics, field); \
152})
153#define ICMP6_INC_STATS_OFFSET_BH(idev, field, offset) ({ \
154 struct inet6_dev *_idev = idev; \
155 __typeof__(offset) _offset = (offset); \
156 if (likely(_idev != NULL)) \
157 SNMP_INC_STATS_OFFSET_BH(_idev->stats.icmpv6, field, _offset); \
158 SNMP_INC_STATS_OFFSET_BH(icmpv6_statistics, field, _offset); \
159})
160DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800161DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6);
162#define UDP6_INC_STATS_BH(field, is_udplite) do { \
163 if (is_udplite) SNMP_INC_STATS_BH(udplite_stats_in6, field); \
164 else SNMP_INC_STATS_BH(udp_stats_in6, field); } while(0)
165#define UDP6_INC_STATS_USER(field, is_udplite) do { \
166 if (is_udplite) SNMP_INC_STATS_USER(udplite_stats_in6, field); \
167 else SNMP_INC_STATS_USER(udp_stats_in6, field); } while(0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169struct ip6_ra_chain
170{
171 struct ip6_ra_chain *next;
172 struct sock *sk;
173 int sel;
174 void (*destructor)(struct sock *);
175};
176
177extern struct ip6_ra_chain *ip6_ra_chain;
178extern rwlock_t ip6_ra_lock;
179
180/*
181 This structure is prepared by protocol, when parsing
182 ancillary data and passed to IPv6.
183 */
184
185struct ipv6_txoptions
186{
187 /* Length of this structure */
188 int tot_len;
189
190 /* length of extension headers */
191
192 __u16 opt_flen; /* after fragment hdr */
193 __u16 opt_nflen; /* before fragment hdr */
194
195 struct ipv6_opt_hdr *hopopt;
196 struct ipv6_opt_hdr *dst0opt;
197 struct ipv6_rt_hdr *srcrt; /* Routing Header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 struct ipv6_opt_hdr *dst1opt;
199
200 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
201};
202
203struct ip6_flowlabel
204{
205 struct ip6_flowlabel *next;
Al Viro90bcaf72006-11-08 00:25:17 -0800206 __be32 label;
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700207 atomic_t users;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 struct in6_addr dst;
209 struct ipv6_txoptions *opt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 unsigned long linger;
211 u8 share;
212 u32 owner;
213 unsigned long lastuse;
214 unsigned long expires;
215};
216
217#define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF)
218#define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF)
219
220struct ipv6_fl_socklist
221{
222 struct ipv6_fl_socklist *next;
223 struct ip6_flowlabel *fl;
224};
225
Al Viro90bcaf72006-11-08 00:25:17 -0800226extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
228 struct ip6_flowlabel * fl,
229 struct ipv6_txoptions * fopt);
230extern void fl6_free_socklist(struct sock *sk);
231extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
232extern void ip6_flowlabel_init(void);
233extern void ip6_flowlabel_cleanup(void);
234
235static inline void fl6_sock_release(struct ip6_flowlabel *fl)
236{
237 if (fl)
238 atomic_dec(&fl->users);
239}
240
241extern int ip6_ra_control(struct sock *sk, int sel,
242 void (*destructor)(struct sock *));
243
244
Masahide NAKAMURAa80ff032006-08-23 19:19:50 -0700245extern int ipv6_parse_hopopts(struct sk_buff **skbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
247extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900248extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
249 int newtype,
250 struct ipv6_opt_hdr __user *newopt,
251 int newoptlen);
YOSHIFUJI Hideakidf9890c2005-11-20 12:23:18 +0900252struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
253 struct ipv6_txoptions *opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
Arnaldo Carvalho de Melo399c07d2005-12-13 23:24:28 -0800255extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257extern int ip6_frag_nqueues;
258extern atomic_t ip6_frag_mem;
259
260#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */
261
262/*
263 * Function prototype for build_xmit
264 */
265
266typedef int (*inet_getfrag_t) (const void *data,
267 struct in6_addr *addr,
268 char *,
269 unsigned int, unsigned int);
270
YOSHIFUJI Hideakib1cacb62005-11-08 09:38:12 -0800271extern int __ipv6_addr_type(const struct in6_addr *addr);
272static inline int ipv6_addr_type(const struct in6_addr *addr)
273{
274 return __ipv6_addr_type(addr) & 0xffff;
275}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
277static inline int ipv6_addr_scope(const struct in6_addr *addr)
278{
YOSHIFUJI Hideakib1cacb62005-11-08 09:38:12 -0800279 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
280}
281
282static inline int __ipv6_addr_src_scope(int type)
283{
284 return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
285}
286
287static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
288{
289 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290}
291
292static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
293{
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700294 return memcmp(a1, a2, sizeof(struct in6_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295}
296
Patrick McHardyf2ffd9e2006-03-20 18:03:16 -0800297static inline int
298ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
299 const struct in6_addr *a2)
300{
301 unsigned int i;
302
303 for (i = 0; i < 4; i++)
304 if ((a1->s6_addr32[i] ^ a2->s6_addr32[i]) & m->s6_addr32[i])
305 return 1;
306 return 0;
307}
308
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
310{
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700311 memcpy(a1, a2, sizeof(struct in6_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312}
313
314static inline void ipv6_addr_prefix(struct in6_addr *pfx,
315 const struct in6_addr *addr,
316 int plen)
317{
318 /* caller must guarantee 0 <= plen <= 128 */
319 int o = plen >> 3,
320 b = plen & 0x7;
321
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700322 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 memcpy(pfx->s6_addr, addr, o);
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700324 if (b != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326}
327
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328static inline void ipv6_addr_set(struct in6_addr *addr,
Al Viro48818f82006-09-27 18:44:54 -0700329 __be32 w1, __be32 w2,
330 __be32 w3, __be32 w4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331{
332 addr->s6_addr32[0] = w1;
333 addr->s6_addr32[1] = w2;
334 addr->s6_addr32[2] = w3;
335 addr->s6_addr32[3] = w4;
336}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
338static inline int ipv6_addr_equal(const struct in6_addr *a1,
339 const struct in6_addr *a2)
340{
341 return (a1->s6_addr32[0] == a2->s6_addr32[0] &&
342 a1->s6_addr32[1] == a2->s6_addr32[1] &&
343 a1->s6_addr32[2] == a2->s6_addr32[2] &&
344 a1->s6_addr32[3] == a2->s6_addr32[3]);
345}
346
Al Viro48818f82006-09-27 18:44:54 -0700347static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 unsigned int prefixlen)
349{
350 unsigned pdw, pbi;
351
352 /* check complete u32 in prefix */
353 pdw = prefixlen >> 5;
354 if (pdw && memcmp(a1, a2, pdw << 2))
355 return 0;
356
357 /* check incomplete u32 in prefix */
358 pbi = prefixlen & 0x1f;
359 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
360 return 0;
361
362 return 1;
363}
364
365static inline int ipv6_prefix_equal(const struct in6_addr *a1,
366 const struct in6_addr *a2,
367 unsigned int prefixlen)
368{
369 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
370 prefixlen);
371}
372
373static inline int ipv6_addr_any(const struct in6_addr *a)
374{
375 return ((a->s6_addr32[0] | a->s6_addr32[1] |
376 a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
377}
378
379/*
YOSHIFUJI Hideaki971f3592005-11-08 09:37:56 -0800380 * find the first different bit between two addresses
381 * length of address must be a multiple of 32bits
382 */
383static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
384{
Al Viroef296f52006-11-14 20:56:33 -0800385 const __be32 *a1 = token1, *a2 = token2;
YOSHIFUJI Hideaki971f3592005-11-08 09:37:56 -0800386 int i;
387
388 addrlen >>= 2;
389
390 for (i = 0; i < addrlen; i++) {
Al Viroef296f52006-11-14 20:56:33 -0800391 __be32 xb = a1[i] ^ a2[i];
392 if (xb)
393 return i * 32 + 32 - fls(ntohl(xb));
YOSHIFUJI Hideaki971f3592005-11-08 09:37:56 -0800394 }
395
396 /*
397 * we should *never* get to this point since that
398 * would mean the addrs are equal
399 *
400 * However, we do get to it 8) And exacly, when
401 * addresses are equal 8)
402 *
403 * ip route add 1111::/128 via ...
404 * ip route add 1111::/64 via ...
405 * and we are here.
406 *
407 * Ideally, this function should stop comparison
408 * at prefix length. It does not, but it is still OK,
409 * if returned value is greater than prefix length.
410 * --ANK (980803)
411 */
412 return (addrlen << 5);
413}
414
415static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
416{
417 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
418}
419
420/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 * Prototypes exported by ipv6
422 */
423
424/*
425 * rcv function (called from netdevice level)
426 */
427
428extern int ipv6_rcv(struct sk_buff *skb,
429 struct net_device *dev,
David S. Millerf2ccd8f2005-08-09 19:34:12 -0700430 struct packet_type *pt,
431 struct net_device *orig_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432
Patrick McHardyb05e1062006-01-06 23:03:34 -0800433extern int ip6_rcv_finish(struct sk_buff *skb);
434
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435/*
436 * upper-layer output functions
437 */
438extern int ip6_xmit(struct sock *sk,
439 struct sk_buff *skb,
440 struct flowi *fl,
441 struct ipv6_txoptions *opt,
442 int ipfragok);
443
444extern int ip6_nd_hdr(struct sock *sk,
445 struct sk_buff *skb,
446 struct net_device *dev,
447 struct in6_addr *saddr,
448 struct in6_addr *daddr,
449 int proto, int len);
450
451extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
452
453extern int ip6_append_data(struct sock *sk,
454 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
455 void *from,
456 int length,
457 int transhdrlen,
458 int hlimit,
YOSHIFUJI Hideaki41a1f8e2005-09-08 10:19:03 +0900459 int tclass,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 struct ipv6_txoptions *opt,
461 struct flowi *fl,
462 struct rt6_info *rt,
463 unsigned int flags);
464
465extern int ip6_push_pending_frames(struct sock *sk);
466
467extern void ip6_flush_pending_frames(struct sock *sk);
468
469extern int ip6_dst_lookup(struct sock *sk,
470 struct dst_entry **dst,
471 struct flowi *fl);
Herbert Xu497c6152006-07-30 20:19:33 -0700472extern int ip6_sk_dst_lookup(struct sock *sk,
473 struct dst_entry **dst,
474 struct flowi *fl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
476/*
477 * skb processing functions
478 */
479
480extern int ip6_output(struct sk_buff *skb);
481extern int ip6_forward(struct sk_buff *skb);
482extern int ip6_input(struct sk_buff *skb);
483extern int ip6_mc_input(struct sk_buff *skb);
484
485/*
486 * Extension header (options) processing
487 */
488
489extern u8 * ipv6_build_nfrag_opts(struct sk_buff *skb,
490 u8 *prev_hdr,
491 struct ipv6_txoptions *opt,
492 struct in6_addr *daddr,
493 u32 jumbolen);
494extern u8 * ipv6_build_frag_opts(struct sk_buff *skb,
495 u8 *prev_hdr,
496 struct ipv6_txoptions *opt);
497extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
498 struct ipv6_txoptions *opt,
499 u8 *proto,
500 struct in6_addr **daddr_p);
501extern void ipv6_push_frag_opts(struct sk_buff *skb,
502 struct ipv6_txoptions *opt,
503 u8 *proto);
504
505extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
Herbert Xu0d3d0772005-04-24 20:16:19 -0700506 u8 *nexthdrp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
508extern int ipv6_ext_hdr(u8 nexthdr);
509
Masahide NAKAMURAc61a4042006-08-23 19:18:35 -0700510extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
511
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512extern struct ipv6_txoptions * ipv6_invert_rthdr(struct sock *sk,
513 struct ipv6_rt_hdr *hdr);
514
515
516/*
517 * socket options (ipv6_sockglue.c)
518 */
519
520extern int ipv6_setsockopt(struct sock *sk, int level,
521 int optname,
522 char __user *optval,
523 int optlen);
524extern int ipv6_getsockopt(struct sock *sk, int level,
525 int optname,
526 char __user *optval,
527 int __user *optlen);
Dmitry Mishin3fdadf72006-03-20 22:45:21 -0800528extern int compat_ipv6_setsockopt(struct sock *sk,
529 int level,
530 int optname,
531 char __user *optval,
532 int optlen);
533extern int compat_ipv6_getsockopt(struct sock *sk,
534 int level,
535 int optname,
536 char __user *optval,
537 int __user *optlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538
539extern void ipv6_packet_init(void);
540
541extern void ipv6_packet_cleanup(void);
542
543extern int ip6_datagram_connect(struct sock *sk,
544 struct sockaddr *addr, int addr_len);
545
546extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
Al Viroe69a4ad2006-11-14 20:56:00 -0800547extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548 u32 info, u8 *payload);
549extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info);
550
551extern int inet6_release(struct socket *sock);
552extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
553 int addr_len);
554extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
555 int *uaddr_len, int peer);
556extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
557 unsigned long arg);
558
Arnaldo Carvalho de Melod8313f52005-12-13 23:25:44 -0800559extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
560 struct sock *sk);
561
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562/*
563 * reassembly.c
564 */
565extern int sysctl_ip6frag_high_thresh;
566extern int sysctl_ip6frag_low_thresh;
567extern int sysctl_ip6frag_time;
568extern int sysctl_ip6frag_secret_interval;
569
Eric Dumazet90ddc4f2005-12-22 12:49:22 -0800570extern const struct proto_ops inet6_stream_ops;
571extern const struct proto_ops inet6_dgram_ops;
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300572
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -0200573struct group_source_req;
574struct group_filter;
575
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300576extern int ip6_mc_source(int add, int omode, struct sock *sk,
577 struct group_source_req *pgsr);
578extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
579extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
580 struct group_filter __user *optval,
581 int __user *optlen);
582
583#ifdef CONFIG_PROC_FS
584extern int ac6_proc_init(void);
585extern void ac6_proc_exit(void);
586extern int raw6_proc_init(void);
587extern void raw6_proc_exit(void);
588extern int tcp6_proc_init(void);
589extern void tcp6_proc_exit(void);
590extern int udp6_proc_init(void);
591extern void udp6_proc_exit(void);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800592extern int udplite6_proc_init(void);
593extern void udplite6_proc_exit(void);
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300594extern int ipv6_misc_proc_init(void);
595extern void ipv6_misc_proc_exit(void);
Herbert Xu7f7d9a62007-04-24 21:54:09 -0700596extern int snmp6_register_dev(struct inet6_dev *idev);
597extern int snmp6_unregister_dev(struct inet6_dev *idev);
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300598
599extern struct rt6_statistics rt6_stats;
Herbert Xu7f7d9a62007-04-24 21:54:09 -0700600#else
601static inline int snmp6_register_dev(struct inet6_dev *idev)
602{
603 return 0;
604}
605
606static inline int snmp6_unregister_dev(struct inet6_dev *idev)
607{
608 return 0;
609}
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300610#endif
611
612#ifdef CONFIG_SYSCTL
613extern ctl_table ipv6_route_table[];
614extern ctl_table ipv6_icmp_table[];
615
616extern void ipv6_sysctl_register(void);
617extern void ipv6_sysctl_unregister(void);
618#endif
619
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620#endif /* __KERNEL__ */
621#endif /* _NET_IPV6_H */