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ipv6: reallocate addrconf router for ipv6 address when lo device up
[linux/fpc-iii.git] / include / net / ipv6.h
blobfa7af9183dc9f33b89902ee8f8882e188b80799f
1 /*
2 * Linux INET6 implementation
3 *
4 * Authors:
5 * Pedro Roque <roque@di.fc.ul.pt>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13 #ifndef _NET_IPV6_H
14 #define _NET_IPV6_H
15
16 #include <linux/ipv6.h>
17 #include <linux/hardirq.h>
18 #include <linux/jhash.h>
19 #include <net/if_inet6.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. */
43 #define NEXTHDR_MOBILITY 135 /* Mobility header. */
44
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
78 /*
79 * Addr scopes
80 */
81 #define IPV6_ADDR_MC_SCOPE(a) \
82 ((a)->s6_addr[1] & 0x0f) /* nonstandard */
83 #define __IPV6_ADDR_SCOPE_INVALID -1
84 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
85 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
86 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
87 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
88 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
89
90 /*
91 * Addr flags
92 */
93 #define IPV6_ADDR_MC_FLAG_TRANSIENT(a) \
94 ((a)->s6_addr[1] & 0x10)
95 #define IPV6_ADDR_MC_FLAG_PREFIX(a) \
96 ((a)->s6_addr[1] & 0x20)
97 #define IPV6_ADDR_MC_FLAG_RENDEZVOUS(a) \
98 ((a)->s6_addr[1] & 0x40)
99
100 /*
101 * fragmentation header
102 */
103
104 struct frag_hdr {
105 __u8 nexthdr;
106 __u8 reserved;
107 __be16 frag_off;
108 __be32 identification;
109 };
110
111 #define IP6_MF 0x0001
112
113 #include <net/sock.h>
114
115 /* sysctls */
116 extern int sysctl_mld_max_msf;
117 extern struct ctl_path net_ipv6_ctl_path[];
118
119 #define _DEVINC(net, statname, modifier, idev, field) \
120 ({ \
121 struct inet6_dev *_idev = (idev); \
122 if (likely(_idev != NULL)) \
123 SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
124 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
125 })
126
127 /* per device counters are atomic_long_t */
128 #define _DEVINCATOMIC(net, statname, modifier, idev, field) \
129 ({ \
130 struct inet6_dev *_idev = (idev); \
131 if (likely(_idev != NULL)) \
132 SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \
133 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
134 })
135
136 /* per device and per net counters are atomic_long_t */
137 #define _DEVINC_ATOMIC_ATOMIC(net, statname, idev, field) \
138 ({ \
139 struct inet6_dev *_idev = (idev); \
140 if (likely(_idev != NULL)) \
141 SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \
142 SNMP_INC_STATS_ATOMIC_LONG((net)->mib.statname##_statistics, (field));\
143 })
144
145 #define _DEVADD(net, statname, modifier, idev, field, val) \
146 ({ \
147 struct inet6_dev *_idev = (idev); \
148 if (likely(_idev != NULL)) \
149 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
150 SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
151 })
152
153 #define _DEVUPD(net, statname, modifier, idev, field, val) \
154 ({ \
155 struct inet6_dev *_idev = (idev); \
156 if (likely(_idev != NULL)) \
157 SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
158 SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
159 })
160
161 /* MIBs */
162
163 #define IP6_INC_STATS(net, idev,field) \
164 _DEVINC(net, ipv6, 64, idev, field)
165 #define IP6_INC_STATS_BH(net, idev,field) \
166 _DEVINC(net, ipv6, 64_BH, idev, field)
167 #define IP6_ADD_STATS(net, idev,field,val) \
168 _DEVADD(net, ipv6, 64, idev, field, val)
169 #define IP6_ADD_STATS_BH(net, idev,field,val) \
170 _DEVADD(net, ipv6, 64_BH, idev, field, val)
171 #define IP6_UPD_PO_STATS(net, idev,field,val) \
172 _DEVUPD(net, ipv6, 64, idev, field, val)
173 #define IP6_UPD_PO_STATS_BH(net, idev,field,val) \
174 _DEVUPD(net, ipv6, 64_BH, idev, field, val)
175 #define ICMP6_INC_STATS(net, idev, field) \
176 _DEVINCATOMIC(net, icmpv6, , idev, field)
177 #define ICMP6_INC_STATS_BH(net, idev, field) \
178 _DEVINCATOMIC(net, icmpv6, _BH, idev, field)
179
180 #define ICMP6MSGOUT_INC_STATS(net, idev, field) \
181 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256)
182 #define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
183 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256)
184 #define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
185 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field)
186
187 struct ip6_ra_chain {
188 struct ip6_ra_chain *next;
189 struct sock *sk;
190 int sel;
191 void (*destructor)(struct sock *);
192 };
193
194 extern struct ip6_ra_chain *ip6_ra_chain;
195 extern rwlock_t ip6_ra_lock;
196
197 /*
198 This structure is prepared by protocol, when parsing
199 ancillary data and passed to IPv6.
200 */
201
202 struct ipv6_txoptions {
203 /* Length of this structure */
204 int tot_len;
205
206 /* length of extension headers */
207
208 __u16 opt_flen; /* after fragment hdr */
209 __u16 opt_nflen; /* before fragment hdr */
210
211 struct ipv6_opt_hdr *hopopt;
212 struct ipv6_opt_hdr *dst0opt;
213 struct ipv6_rt_hdr *srcrt; /* Routing Header */
214 struct ipv6_opt_hdr *dst1opt;
215
216 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
217 };
218
219 struct ip6_flowlabel {
220 struct ip6_flowlabel *next;
221 __be32 label;
222 atomic_t users;
223 struct in6_addr dst;
224 struct ipv6_txoptions *opt;
225 unsigned long linger;
226 u8 share;
227 u32 owner;
228 unsigned long lastuse;
229 unsigned long expires;
230 struct net *fl_net;
231 };
232
233 #define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
234 #define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
235
236 struct ipv6_fl_socklist {
237 struct ipv6_fl_socklist *next;
238 struct ip6_flowlabel *fl;
239 };
240
241 extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
242 extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
243 struct ip6_flowlabel * fl,
244 struct ipv6_txoptions * fopt);
245 extern void fl6_free_socklist(struct sock *sk);
246 extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
247 extern int ip6_flowlabel_init(void);
248 extern void ip6_flowlabel_cleanup(void);
249
250 static inline void fl6_sock_release(struct ip6_flowlabel *fl)
251 {
252 if (fl)
253 atomic_dec(&fl->users);
254 }
255
256 extern int ip6_ra_control(struct sock *sk, int sel);
257
258 extern int ipv6_parse_hopopts(struct sk_buff *skb);
259
260 extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
261 extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
262 int newtype,
263 struct ipv6_opt_hdr __user *newopt,
264 int newoptlen);
265 struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
266 struct ipv6_txoptions *opt);
267
268 extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
269
270 int ip6_frag_nqueues(struct net *net);
271 int ip6_frag_mem(struct net *net);
272
273 #define IPV6_FRAG_HIGH_THRESH (256 * 1024) /* 262144 */
274 #define IPV6_FRAG_LOW_THRESH (192 * 1024) /* 196608 */
275 #define IPV6_FRAG_TIMEOUT (60 * HZ) /* 60 seconds */
276
277 extern int __ipv6_addr_type(const struct in6_addr *addr);
278 static inline int ipv6_addr_type(const struct in6_addr *addr)
279 {
280 return __ipv6_addr_type(addr) & 0xffff;
281 }
282
283 static inline int ipv6_addr_scope(const struct in6_addr *addr)
284 {
285 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
286 }
287
288 static inline int __ipv6_addr_src_scope(int type)
289 {
290 return (type == IPV6_ADDR_ANY) ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16);
291 }
292
293 static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
294 {
295 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
296 }
297
298 static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
299 {
300 return memcmp(a1, a2, sizeof(struct in6_addr));
301 }
302
303 static inline int
304 ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
305 const struct in6_addr *a2)
306 {
307 return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
308 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
309 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
310 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3]));
311 }
312
313 static inline void ipv6_addr_prefix(struct in6_addr *pfx,
314 const struct in6_addr *addr,
315 int plen)
316 {
317 /* caller must guarantee 0 <= plen <= 128 */
318 int o = plen >> 3,
319 b = plen & 0x7;
320
321 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
322 memcpy(pfx->s6_addr, addr, o);
323 if (b != 0)
324 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
325 }
326
327 static inline void ipv6_addr_set(struct in6_addr *addr,
328 __be32 w1, __be32 w2,
329 __be32 w3, __be32 w4)
330 {
331 addr->s6_addr32[0] = w1;
332 addr->s6_addr32[1] = w2;
333 addr->s6_addr32[2] = w3;
334 addr->s6_addr32[3] = w4;
335 }
336
337 static inline int ipv6_addr_equal(const struct in6_addr *a1,
338 const struct in6_addr *a2)
339 {
340 return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
341 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
342 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
343 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0;
344 }
345
346 static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
347 unsigned int prefixlen)
348 {
349 unsigned pdw, pbi;
350
351 /* check complete u32 in prefix */
352 pdw = prefixlen >> 5;
353 if (pdw && memcmp(a1, a2, pdw << 2))
354 return 0;
355
356 /* check incomplete u32 in prefix */
357 pbi = prefixlen & 0x1f;
358 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
359 return 0;
360
361 return 1;
362 }
363
364 static inline int ipv6_prefix_equal(const struct in6_addr *a1,
365 const struct in6_addr *a2,
366 unsigned int prefixlen)
367 {
368 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
369 prefixlen);
370 }
371
372 struct inet_frag_queue;
373
374 enum ip6_defrag_users {
375 IP6_DEFRAG_LOCAL_DELIVER,
376 IP6_DEFRAG_CONNTRACK_IN,
377 __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHRT_MAX,
378 IP6_DEFRAG_CONNTRACK_OUT,
379 __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHRT_MAX,
380 IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
381 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
382 };
383
384 struct ip6_create_arg {
385 __be32 id;
386 u32 user;
387 const struct in6_addr *src;
388 const struct in6_addr *dst;
389 };
390
391 void ip6_frag_init(struct inet_frag_queue *q, void *a);
392 int ip6_frag_match(struct inet_frag_queue *q, void *a);
393
394 /* more secured version of ipv6_addr_hash() */
395 static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
396 {
397 u32 v = (__force u32)a->s6_addr32[0] ^ (__force u32)a->s6_addr32[1];
398
399 return jhash_3words(v,
400 (__force u32)a->s6_addr32[2],
401 (__force u32)a->s6_addr32[3],
402 ipv6_hash_secret);
403 }
404
405 static inline int ipv6_addr_any(const struct in6_addr *a)
406 {
407 return (a->s6_addr32[0] | a->s6_addr32[1] |
408 a->s6_addr32[2] | a->s6_addr32[3]) == 0;
409 }
410
411 static inline int ipv6_addr_loopback(const struct in6_addr *a)
412 {
413 return (a->s6_addr32[0] | a->s6_addr32[1] |
414 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0;
415 }
416
417 static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
418 {
419 return (a->s6_addr32[0] | a->s6_addr32[1] |
420 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0;
421 }
422
423 /*
424 * Check for a RFC 4843 ORCHID address
425 * (Overlay Routable Cryptographic Hash Identifiers)
426 */
427 static inline int ipv6_addr_orchid(const struct in6_addr *a)
428 {
429 return (a->s6_addr32[0] & htonl(0xfffffff0)) == htonl(0x20010010);
430 }
431
432 static inline void ipv6_addr_set_v4mapped(const __be32 addr,
433 struct in6_addr *v4mapped)
434 {
435 ipv6_addr_set(v4mapped,
436 0, 0,
437 htonl(0x0000FFFF),
438 addr);
439 }
440
441 /*
442 * find the first different bit between two addresses
443 * length of address must be a multiple of 32bits
444 */
445 static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
446 {
447 const __be32 *a1 = token1, *a2 = token2;
448 int i;
449
450 addrlen >>= 2;
451
452 for (i = 0; i < addrlen; i++) {
453 __be32 xb = a1[i] ^ a2[i];
454 if (xb)
455 return i * 32 + 31 - __fls(ntohl(xb));
456 }
457
458 /*
459 * we should *never* get to this point since that
460 * would mean the addrs are equal
461 *
462 * However, we do get to it 8) And exacly, when
463 * addresses are equal 8)
464 *
465 * ip route add 1111::/128 via ...
466 * ip route add 1111::/64 via ...
467 * and we are here.
468 *
469 * Ideally, this function should stop comparison
470 * at prefix length. It does not, but it is still OK,
471 * if returned value is greater than prefix length.
472 * --ANK (980803)
473 */
474 return addrlen << 5;
475 }
476
477 static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
478 {
479 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
480 }
481
482 extern void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);
483
484 /*
485 * Prototypes exported by ipv6
486 */
487
488 /*
489 * rcv function (called from netdevice level)
490 */
491
492 extern int ipv6_rcv(struct sk_buff *skb,
493 struct net_device *dev,
494 struct packet_type *pt,
495 struct net_device *orig_dev);
496
497 extern int ip6_rcv_finish(struct sk_buff *skb);
498
499 /*
500 * upper-layer output functions
501 */
502 extern int ip6_xmit(struct sock *sk,
503 struct sk_buff *skb,
504 struct flowi6 *fl6,
505 struct ipv6_txoptions *opt,
506 int tclass);
507
508 extern int ip6_nd_hdr(struct sock *sk,
509 struct sk_buff *skb,
510 struct net_device *dev,
511 const struct in6_addr *saddr,
512 const struct in6_addr *daddr,
513 int proto, int len);
514
515 extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
516
517 extern int ip6_append_data(struct sock *sk,
518 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
519 void *from,
520 int length,
521 int transhdrlen,
522 int hlimit,
523 int tclass,
524 struct ipv6_txoptions *opt,
525 struct flowi6 *fl6,
526 struct rt6_info *rt,
527 unsigned int flags,
528 int dontfrag);
529
530 extern int ip6_push_pending_frames(struct sock *sk);
531
532 extern void ip6_flush_pending_frames(struct sock *sk);
533
534 extern int ip6_dst_lookup(struct sock *sk,
535 struct dst_entry **dst,
536 struct flowi6 *fl6);
537 extern struct dst_entry * ip6_dst_lookup_flow(struct sock *sk,
538 struct flowi6 *fl6,
539 const struct in6_addr *final_dst,
540 bool can_sleep);
541 extern struct dst_entry * ip6_sk_dst_lookup_flow(struct sock *sk,
542 struct flowi6 *fl6,
543 const struct in6_addr *final_dst,
544 bool can_sleep);
545 extern struct dst_entry * ip6_blackhole_route(struct net *net,
546 struct dst_entry *orig_dst);
547
548 /*
549 * skb processing functions
550 */
551
552 extern int ip6_output(struct sk_buff *skb);
553 extern int ip6_forward(struct sk_buff *skb);
554 extern int ip6_input(struct sk_buff *skb);
555 extern int ip6_mc_input(struct sk_buff *skb);
556
557 extern int __ip6_local_out(struct sk_buff *skb);
558 extern int ip6_local_out(struct sk_buff *skb);
559
560 /*
561 * Extension header (options) processing
562 */
563
564 extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
565 struct ipv6_txoptions *opt,
566 u8 *proto,
567 struct in6_addr **daddr_p);
568 extern void ipv6_push_frag_opts(struct sk_buff *skb,
569 struct ipv6_txoptions *opt,
570 u8 *proto);
571
572 extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
573 u8 *nexthdrp, __be16 *frag_offp);
574
575 extern int ipv6_ext_hdr(u8 nexthdr);
576
577 extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
578
579 extern struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
580 const struct ipv6_txoptions *opt,
581 struct in6_addr *orig);
582
583 /*
584 * socket options (ipv6_sockglue.c)
585 */
586
587 extern int ipv6_setsockopt(struct sock *sk, int level,
588 int optname,
589 char __user *optval,
590 unsigned int optlen);
591 extern int ipv6_getsockopt(struct sock *sk, int level,
592 int optname,
593 char __user *optval,
594 int __user *optlen);
595 extern int compat_ipv6_setsockopt(struct sock *sk,
596 int level,
597 int optname,
598 char __user *optval,
599 unsigned int optlen);
600 extern int compat_ipv6_getsockopt(struct sock *sk,
601 int level,
602 int optname,
603 char __user *optval,
604 int __user *optlen);
605
606 extern int ip6_datagram_connect(struct sock *sk,
607 struct sockaddr *addr, int addr_len);
608
609 extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len,
610 int *addr_len);
611 extern int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len,
612 int *addr_len);
613 extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
614 u32 info, u8 *payload);
615 extern void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info);
616 extern void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
617
618 extern int inet6_release(struct socket *sock);
619 extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
620 int addr_len);
621 extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
622 int *uaddr_len, int peer);
623 extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
624 unsigned long arg);
625
626 extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
627 struct sock *sk);
628
629 /*
630 * reassembly.c
631 */
632 extern const struct proto_ops inet6_stream_ops;
633 extern const struct proto_ops inet6_dgram_ops;
634
635 struct group_source_req;
636 struct group_filter;
637
638 extern int ip6_mc_source(int add, int omode, struct sock *sk,
639 struct group_source_req *pgsr);
640 extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
641 extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
642 struct group_filter __user *optval,
643 int __user *optlen);
644 extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
645 const struct in6_addr *daddr, u32 rnd);
646
647 #ifdef CONFIG_PROC_FS
648 extern int ac6_proc_init(struct net *net);
649 extern void ac6_proc_exit(struct net *net);
650 extern int raw6_proc_init(void);
651 extern void raw6_proc_exit(void);
652 extern int tcp6_proc_init(struct net *net);
653 extern void tcp6_proc_exit(struct net *net);
654 extern int udp6_proc_init(struct net *net);
655 extern void udp6_proc_exit(struct net *net);
656 extern int udplite6_proc_init(void);
657 extern void udplite6_proc_exit(void);
658 extern int ipv6_misc_proc_init(void);
659 extern void ipv6_misc_proc_exit(void);
660 extern int snmp6_register_dev(struct inet6_dev *idev);
661 extern int snmp6_unregister_dev(struct inet6_dev *idev);
662
663 #else
664 static inline int ac6_proc_init(struct net *net) { return 0; }
665 static inline void ac6_proc_exit(struct net *net) { }
666 static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
667 static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
668 #endif
669
670 #ifdef CONFIG_SYSCTL
671 extern ctl_table ipv6_route_table_template[];
672 extern ctl_table ipv6_icmp_table_template[];
673
674 extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
675 extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
676 extern int ipv6_sysctl_register(void);
677 extern void ipv6_sysctl_unregister(void);
678 extern int ipv6_static_sysctl_register(void);
679 extern void ipv6_static_sysctl_unregister(void);
680 #endif
681
682 #endif /* _NET_IPV6_H */
Linux with added FPC-III support