blob: 9059e0ed7fe375e70d12740a1703526d89aba944 [file] [log] [blame]
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>
Herbert Xu20283d82007-07-30 17:05:49 -070020#include <net/if_inet6.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include <net/ndisc.h>
22#include <net/flow.h>
23#include <net/snmp.h>
24
25#define SIN6_LEN_RFC2133 24
26
27#define IPV6_MAXPLEN 65535
28
29/*
30 * NextHeader field of IPv6 header
31 */
32
33#define NEXTHDR_HOP 0 /* Hop-by-hop option header. */
34#define NEXTHDR_TCP 6 /* TCP segment. */
35#define NEXTHDR_UDP 17 /* UDP message. */
36#define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */
37#define NEXTHDR_ROUTING 43 /* Routing header. */
38#define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */
39#define NEXTHDR_ESP 50 /* Encapsulating security payload. */
40#define NEXTHDR_AUTH 51 /* Authentication header. */
41#define NEXTHDR_ICMP 58 /* ICMP for IPv6. */
42#define NEXTHDR_NONE 59 /* No next header */
43#define NEXTHDR_DEST 60 /* Destination options header. */
Masahide NAKAMURA2b741652006-08-23 20:34:26 -070044#define NEXTHDR_MOBILITY 135 /* Mobility header. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
46#define NEXTHDR_MAX 255
47
48
49
50#define IPV6_DEFAULT_HOPLIMIT 64
51#define IPV6_DEFAULT_MCASTHOPS 1
52
53/*
54 * Addr type
55 *
56 * type - unicast | multicast
57 * scope - local | site | global
58 * v4 - compat
59 * v4mapped
60 * any
61 * loopback
62 */
63
64#define IPV6_ADDR_ANY 0x0000U
65
66#define IPV6_ADDR_UNICAST 0x0001U
67#define IPV6_ADDR_MULTICAST 0x0002U
68
69#define IPV6_ADDR_LOOPBACK 0x0010U
70#define IPV6_ADDR_LINKLOCAL 0x0020U
71#define IPV6_ADDR_SITELOCAL 0x0040U
72
73#define IPV6_ADDR_COMPATv4 0x0080U
74
75#define IPV6_ADDR_SCOPE_MASK 0x00f0U
76
77#define IPV6_ADDR_MAPPED 0x1000U
78#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
79
80/*
81 * Addr scopes
82 */
83#ifdef __KERNEL__
84#define IPV6_ADDR_MC_SCOPE(a) \
85 ((a)->s6_addr[1] & 0x0f) /* nonstandard */
86#define __IPV6_ADDR_SCOPE_INVALID -1
87#endif
88#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
89#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
90#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
91#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
92#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
93
94/*
95 * fragmentation header
96 */
97
98struct frag_hdr {
Al Viro44473a62006-11-08 00:21:46 -080099 __u8 nexthdr;
100 __u8 reserved;
101 __be16 frag_off;
102 __be32 identification;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103};
104
105#define IP6_MF 0x0001
106
107#ifdef __KERNEL__
108
109#include <net/sock.h>
110
111/* sysctls */
112extern int sysctl_ipv6_bindv6only;
113extern int sysctl_mld_max_msf;
114
115/* MIBs */
116DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900117#define IP6_INC_STATS(idev,field) ({ \
118 struct inet6_dev *_idev = (idev); \
119 if (likely(_idev != NULL)) \
120 SNMP_INC_STATS(_idev->stats.ipv6, field); \
121 SNMP_INC_STATS(ipv6_statistics, field); \
122})
123#define IP6_INC_STATS_BH(idev,field) ({ \
124 struct inet6_dev *_idev = (idev); \
125 if (likely(_idev != NULL)) \
126 SNMP_INC_STATS_BH(_idev->stats.ipv6, field); \
127 SNMP_INC_STATS_BH(ipv6_statistics, field); \
128})
129#define IP6_INC_STATS_USER(idev,field) ({ \
130 struct inet6_dev *_idev = (idev); \
131 if (likely(_idev != NULL)) \
132 SNMP_INC_STATS_USER(_idev->stats.ipv6, field); \
133 SNMP_INC_STATS_USER(ipv6_statistics, field); \
134})
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
136#define ICMP6_INC_STATS(idev, field) ({ \
137 struct inet6_dev *_idev = (idev); \
138 if (likely(_idev != NULL)) \
139 SNMP_INC_STATS(idev->stats.icmpv6, field); \
140 SNMP_INC_STATS(icmpv6_statistics, field); \
141})
142#define ICMP6_INC_STATS_BH(idev, field) ({ \
143 struct inet6_dev *_idev = (idev); \
144 if (likely(_idev != NULL)) \
145 SNMP_INC_STATS_BH((_idev)->stats.icmpv6, field); \
146 SNMP_INC_STATS_BH(icmpv6_statistics, field); \
147})
148#define ICMP6_INC_STATS_USER(idev, field) ({ \
149 struct inet6_dev *_idev = (idev); \
150 if (likely(_idev != NULL)) \
151 SNMP_INC_STATS_USER(_idev->stats.icmpv6, field); \
152 SNMP_INC_STATS_USER(icmpv6_statistics, field); \
153})
154#define ICMP6_INC_STATS_OFFSET_BH(idev, field, offset) ({ \
155 struct inet6_dev *_idev = idev; \
156 __typeof__(offset) _offset = (offset); \
157 if (likely(_idev != NULL)) \
158 SNMP_INC_STATS_OFFSET_BH(_idev->stats.icmpv6, field, _offset); \
159 SNMP_INC_STATS_OFFSET_BH(icmpv6_statistics, field, _offset); \
160})
161DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800162DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6);
163#define UDP6_INC_STATS_BH(field, is_udplite) do { \
164 if (is_udplite) SNMP_INC_STATS_BH(udplite_stats_in6, field); \
165 else SNMP_INC_STATS_BH(udp_stats_in6, field); } while(0)
166#define UDP6_INC_STATS_USER(field, is_udplite) do { \
167 if (is_udplite) SNMP_INC_STATS_USER(udplite_stats_in6, field); \
168 else SNMP_INC_STATS_USER(udp_stats_in6, field); } while(0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170struct ip6_ra_chain
171{
172 struct ip6_ra_chain *next;
173 struct sock *sk;
174 int sel;
175 void (*destructor)(struct sock *);
176};
177
178extern struct ip6_ra_chain *ip6_ra_chain;
179extern rwlock_t ip6_ra_lock;
180
181/*
182 This structure is prepared by protocol, when parsing
183 ancillary data and passed to IPv6.
184 */
185
186struct ipv6_txoptions
187{
188 /* Length of this structure */
189 int tot_len;
190
191 /* length of extension headers */
192
193 __u16 opt_flen; /* after fragment hdr */
194 __u16 opt_nflen; /* before fragment hdr */
195
196 struct ipv6_opt_hdr *hopopt;
197 struct ipv6_opt_hdr *dst0opt;
198 struct ipv6_rt_hdr *srcrt; /* Routing Header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 struct ipv6_opt_hdr *dst1opt;
200
201 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
202};
203
204struct ip6_flowlabel
205{
206 struct ip6_flowlabel *next;
Al Viro90bcaf72006-11-08 00:25:17 -0800207 __be32 label;
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700208 atomic_t users;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 struct in6_addr dst;
210 struct ipv6_txoptions *opt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 unsigned long linger;
212 u8 share;
213 u32 owner;
214 unsigned long lastuse;
215 unsigned long expires;
216};
217
218#define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF)
219#define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF)
220
221struct ipv6_fl_socklist
222{
223 struct ipv6_fl_socklist *next;
224 struct ip6_flowlabel *fl;
225};
226
Al Viro90bcaf72006-11-08 00:25:17 -0800227extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
229 struct ip6_flowlabel * fl,
230 struct ipv6_txoptions * fopt);
231extern void fl6_free_socklist(struct sock *sk);
232extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
233extern void ip6_flowlabel_init(void);
234extern void ip6_flowlabel_cleanup(void);
235
236static inline void fl6_sock_release(struct ip6_flowlabel *fl)
237{
238 if (fl)
239 atomic_dec(&fl->users);
240}
241
242extern int ip6_ra_control(struct sock *sk, int sel,
243 void (*destructor)(struct sock *));
244
245
Masahide NAKAMURAa80ff032006-08-23 19:19:50 -0700246extern int ipv6_parse_hopopts(struct sk_buff **skbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
248extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900249extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
250 int newtype,
251 struct ipv6_opt_hdr __user *newopt,
252 int newoptlen);
YOSHIFUJI Hideakidf9890c2005-11-20 12:23:18 +0900253struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
254 struct ipv6_txoptions *opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
Arnaldo Carvalho de Melo399c07d2005-12-13 23:24:28 -0800256extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258extern int ip6_frag_nqueues;
259extern atomic_t ip6_frag_mem;
260
261#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */
262
263/*
264 * Function prototype for build_xmit
265 */
266
267typedef int (*inet_getfrag_t) (const void *data,
268 struct in6_addr *addr,
269 char *,
270 unsigned int, unsigned int);
271
YOSHIFUJI Hideakib1cacb62005-11-08 09:38:12 -0800272extern int __ipv6_addr_type(const struct in6_addr *addr);
273static inline int ipv6_addr_type(const struct in6_addr *addr)
274{
275 return __ipv6_addr_type(addr) & 0xffff;
276}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277
278static inline int ipv6_addr_scope(const struct in6_addr *addr)
279{
YOSHIFUJI Hideakib1cacb62005-11-08 09:38:12 -0800280 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
281}
282
283static inline int __ipv6_addr_src_scope(int type)
284{
285 return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
286}
287
288static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
289{
290 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291}
292
293static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
294{
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700295 return memcmp(a1, a2, sizeof(struct in6_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
Patrick McHardyf2ffd9e2006-03-20 18:03:16 -0800298static inline int
299ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
300 const struct in6_addr *a2)
301{
302 unsigned int i;
303
304 for (i = 0; i < 4; i++)
305 if ((a1->s6_addr32[i] ^ a2->s6_addr32[i]) & m->s6_addr32[i])
306 return 1;
307 return 0;
308}
309
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
311{
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700312 memcpy(a1, a2, sizeof(struct in6_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313}
314
315static inline void ipv6_addr_prefix(struct in6_addr *pfx,
316 const struct in6_addr *addr,
317 int plen)
318{
319 /* caller must guarantee 0 <= plen <= 128 */
320 int o = plen >> 3,
321 b = plen & 0x7;
322
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700323 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 memcpy(pfx->s6_addr, addr, o);
Eric Dumazetdb3459d2007-05-03 17:39:04 -0700325 if (b != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327}
328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329static inline void ipv6_addr_set(struct in6_addr *addr,
Al Viro48818f82006-09-27 18:44:54 -0700330 __be32 w1, __be32 w2,
331 __be32 w3, __be32 w4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332{
333 addr->s6_addr32[0] = w1;
334 addr->s6_addr32[1] = w2;
335 addr->s6_addr32[2] = w3;
336 addr->s6_addr32[3] = w4;
337}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339static inline int ipv6_addr_equal(const struct in6_addr *a1,
340 const struct in6_addr *a2)
341{
342 return (a1->s6_addr32[0] == a2->s6_addr32[0] &&
343 a1->s6_addr32[1] == a2->s6_addr32[1] &&
344 a1->s6_addr32[2] == a2->s6_addr32[2] &&
345 a1->s6_addr32[3] == a2->s6_addr32[3]);
346}
347
Al Viro48818f82006-09-27 18:44:54 -0700348static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 unsigned int prefixlen)
350{
351 unsigned pdw, pbi;
352
353 /* check complete u32 in prefix */
354 pdw = prefixlen >> 5;
355 if (pdw && memcmp(a1, a2, pdw << 2))
356 return 0;
357
358 /* check incomplete u32 in prefix */
359 pbi = prefixlen & 0x1f;
360 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
361 return 0;
362
363 return 1;
364}
365
366static inline int ipv6_prefix_equal(const struct in6_addr *a1,
367 const struct in6_addr *a2,
368 unsigned int prefixlen)
369{
370 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
371 prefixlen);
372}
373
374static inline int ipv6_addr_any(const struct in6_addr *a)
375{
376 return ((a->s6_addr32[0] | a->s6_addr32[1] |
377 a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
378}
379
380/*
YOSHIFUJI Hideaki971f3592005-11-08 09:37:56 -0800381 * find the first different bit between two addresses
382 * length of address must be a multiple of 32bits
383 */
384static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
385{
Al Viroef296f52006-11-14 20:56:33 -0800386 const __be32 *a1 = token1, *a2 = token2;
YOSHIFUJI Hideaki971f3592005-11-08 09:37:56 -0800387 int i;
388
389 addrlen >>= 2;
390
391 for (i = 0; i < addrlen; i++) {
Al Viroef296f52006-11-14 20:56:33 -0800392 __be32 xb = a1[i] ^ a2[i];
393 if (xb)
394 return i * 32 + 32 - fls(ntohl(xb));
YOSHIFUJI Hideaki971f3592005-11-08 09:37:56 -0800395 }
396
397 /*
398 * we should *never* get to this point since that
399 * would mean the addrs are equal
400 *
401 * However, we do get to it 8) And exacly, when
402 * addresses are equal 8)
403 *
404 * ip route add 1111::/128 via ...
405 * ip route add 1111::/64 via ...
406 * and we are here.
407 *
408 * Ideally, this function should stop comparison
409 * at prefix length. It does not, but it is still OK,
410 * if returned value is greater than prefix length.
411 * --ANK (980803)
412 */
413 return (addrlen << 5);
414}
415
416static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
417{
418 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
419}
420
421/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 * Prototypes exported by ipv6
423 */
424
425/*
426 * rcv function (called from netdevice level)
427 */
428
429extern int ipv6_rcv(struct sk_buff *skb,
430 struct net_device *dev,
David S. Millerf2ccd8f2005-08-09 19:34:12 -0700431 struct packet_type *pt,
432 struct net_device *orig_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Patrick McHardyb05e1062006-01-06 23:03:34 -0800434extern int ip6_rcv_finish(struct sk_buff *skb);
435
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436/*
437 * upper-layer output functions
438 */
439extern int ip6_xmit(struct sock *sk,
440 struct sk_buff *skb,
441 struct flowi *fl,
442 struct ipv6_txoptions *opt,
443 int ipfragok);
444
445extern int ip6_nd_hdr(struct sock *sk,
446 struct sk_buff *skb,
447 struct net_device *dev,
448 struct in6_addr *saddr,
449 struct in6_addr *daddr,
450 int proto, int len);
451
452extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
453
454extern int ip6_append_data(struct sock *sk,
455 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
456 void *from,
457 int length,
458 int transhdrlen,
459 int hlimit,
YOSHIFUJI Hideaki41a1f8e2005-09-08 10:19:03 +0900460 int tclass,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 struct ipv6_txoptions *opt,
462 struct flowi *fl,
463 struct rt6_info *rt,
464 unsigned int flags);
465
466extern int ip6_push_pending_frames(struct sock *sk);
467
468extern void ip6_flush_pending_frames(struct sock *sk);
469
470extern int ip6_dst_lookup(struct sock *sk,
471 struct dst_entry **dst,
472 struct flowi *fl);
David S. Miller14e50e52007-05-24 18:17:54 -0700473extern int ip6_dst_blackhole(struct sock *sk,
474 struct dst_entry **dst,
475 struct flowi *fl);
Herbert Xu497c6152006-07-30 20:19:33 -0700476extern int ip6_sk_dst_lookup(struct sock *sk,
477 struct dst_entry **dst,
478 struct flowi *fl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479
480/*
481 * skb processing functions
482 */
483
484extern int ip6_output(struct sk_buff *skb);
485extern int ip6_forward(struct sk_buff *skb);
486extern int ip6_input(struct sk_buff *skb);
487extern int ip6_mc_input(struct sk_buff *skb);
488
489/*
490 * Extension header (options) processing
491 */
492
493extern u8 * ipv6_build_nfrag_opts(struct sk_buff *skb,
494 u8 *prev_hdr,
495 struct ipv6_txoptions *opt,
496 struct in6_addr *daddr,
497 u32 jumbolen);
498extern u8 * ipv6_build_frag_opts(struct sk_buff *skb,
499 u8 *prev_hdr,
500 struct ipv6_txoptions *opt);
501extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
502 struct ipv6_txoptions *opt,
503 u8 *proto,
504 struct in6_addr **daddr_p);
505extern void ipv6_push_frag_opts(struct sk_buff *skb,
506 struct ipv6_txoptions *opt,
507 u8 *proto);
508
509extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
Herbert Xu0d3d0772005-04-24 20:16:19 -0700510 u8 *nexthdrp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
512extern int ipv6_ext_hdr(u8 nexthdr);
513
Masahide NAKAMURAc61a4042006-08-23 19:18:35 -0700514extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
515
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516/*
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 */