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Linux 2.6.35.8
[linux/fpc-iii.git] / include / net / ipv6.h
blob2600b69757b8c63d6ab8c570b9f0e26f195468c4
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 <net/if_inet6.h>
19 #include <net/ndisc.h>
20 #include <net/flow.h>
21 #include <net/snmp.h>
22
23 #define SIN6_LEN_RFC2133 24
24
25 #define IPV6_MAXPLEN 65535
26
27 /*
28 * NextHeader field of IPv6 header
29 */
30
31 #define NEXTHDR_HOP 0 /* Hop-by-hop option header. */
32 #define NEXTHDR_TCP 6 /* TCP segment. */
33 #define NEXTHDR_UDP 17 /* UDP message. */
34 #define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */
35 #define NEXTHDR_ROUTING 43 /* Routing header. */
36 #define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */
37 #define NEXTHDR_ESP 50 /* Encapsulating security payload. */
38 #define NEXTHDR_AUTH 51 /* Authentication header. */
39 #define NEXTHDR_ICMP 58 /* ICMP for IPv6. */
40 #define NEXTHDR_NONE 59 /* No next header */
41 #define NEXTHDR_DEST 60 /* Destination options header. */
42 #define NEXTHDR_MOBILITY 135 /* Mobility header. */
43
44 #define NEXTHDR_MAX 255
45
46
47
48 #define IPV6_DEFAULT_HOPLIMIT 64
49 #define IPV6_DEFAULT_MCASTHOPS 1
50
51 /*
52 * Addr type
53 *
54 * type - unicast | multicast
55 * scope - local | site | global
56 * v4 - compat
57 * v4mapped
58 * any
59 * loopback
60 */
61
62 #define IPV6_ADDR_ANY 0x0000U
63
64 #define IPV6_ADDR_UNICAST 0x0001U
65 #define IPV6_ADDR_MULTICAST 0x0002U
66
67 #define IPV6_ADDR_LOOPBACK 0x0010U
68 #define IPV6_ADDR_LINKLOCAL 0x0020U
69 #define IPV6_ADDR_SITELOCAL 0x0040U
70
71 #define IPV6_ADDR_COMPATv4 0x0080U
72
73 #define IPV6_ADDR_SCOPE_MASK 0x00f0U
74
75 #define IPV6_ADDR_MAPPED 0x1000U
76
77 /*
78 * Addr scopes
79 */
80 #ifdef __KERNEL__
81 #define IPV6_ADDR_MC_SCOPE(a) \
82 ((a)->s6_addr[1] & 0x0f) /* nonstandard */
83 #define __IPV6_ADDR_SCOPE_INVALID -1
84 #endif
85 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
86 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
87 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
88 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
89 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
90
91 /*
92 * fragmentation header
93 */
94
95 struct frag_hdr {
96 __u8 nexthdr;
97 __u8 reserved;
98 __be16 frag_off;
99 __be32 identification;
100 };
101
102 #define IP6_MF 0x0001
103
104 #ifdef __KERNEL__
105
106 #include <net/sock.h>
107
108 /* sysctls */
109 extern int sysctl_mld_max_msf;
110 extern struct ctl_path net_ipv6_ctl_path[];
111
112 #define _DEVINC(net, statname, modifier, idev, field) \
113 ({ \
114 struct inet6_dev *_idev = (idev); \
115 if (likely(_idev != NULL)) \
116 SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
117 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
118 })
119
120 #define _DEVADD(net, statname, modifier, idev, field, val) \
121 ({ \
122 struct inet6_dev *_idev = (idev); \
123 if (likely(_idev != NULL)) \
124 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
125 SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
126 })
127
128 #define _DEVUPD(net, statname, modifier, idev, field, val) \
129 ({ \
130 struct inet6_dev *_idev = (idev); \
131 if (likely(_idev != NULL)) \
132 SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
133 SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
134 })
135
136 /* MIBs */
137
138 #define IP6_INC_STATS(net, idev,field) \
139 _DEVINC(net, ipv6, , idev, field)
140 #define IP6_INC_STATS_BH(net, idev,field) \
141 _DEVINC(net, ipv6, _BH, idev, field)
142 #define IP6_ADD_STATS(net, idev,field,val) \
143 _DEVADD(net, ipv6, , idev, field, val)
144 #define IP6_ADD_STATS_BH(net, idev,field,val) \
145 _DEVADD(net, ipv6, _BH, idev, field, val)
146 #define IP6_UPD_PO_STATS(net, idev,field,val) \
147 _DEVUPD(net, ipv6, , idev, field, val)
148 #define IP6_UPD_PO_STATS_BH(net, idev,field,val) \
149 _DEVUPD(net, ipv6, _BH, idev, field, val)
150 #define ICMP6_INC_STATS(net, idev, field) \
151 _DEVINC(net, icmpv6, , idev, field)
152 #define ICMP6_INC_STATS_BH(net, idev, field) \
153 _DEVINC(net, icmpv6, _BH, idev, field)
154
155 #define ICMP6MSGOUT_INC_STATS(net, idev, field) \
156 _DEVINC(net, icmpv6msg, , idev, field +256)
157 #define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
158 _DEVINC(net, icmpv6msg, _BH, idev, field +256)
159 #define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
160 _DEVINC(net, icmpv6msg, _BH, idev, field)
161
162 struct ip6_ra_chain {
163 struct ip6_ra_chain *next;
164 struct sock *sk;
165 int sel;
166 void (*destructor)(struct sock *);
167 };
168
169 extern struct ip6_ra_chain *ip6_ra_chain;
170 extern rwlock_t ip6_ra_lock;
171
172 /*
173 This structure is prepared by protocol, when parsing
174 ancillary data and passed to IPv6.
175 */
176
177 struct ipv6_txoptions {
178 /* Length of this structure */
179 int tot_len;
180
181 /* length of extension headers */
182
183 __u16 opt_flen; /* after fragment hdr */
184 __u16 opt_nflen; /* before fragment hdr */
185
186 struct ipv6_opt_hdr *hopopt;
187 struct ipv6_opt_hdr *dst0opt;
188 struct ipv6_rt_hdr *srcrt; /* Routing Header */
189 struct ipv6_opt_hdr *dst1opt;
190
191 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
192 };
193
194 struct ip6_flowlabel {
195 struct ip6_flowlabel *next;
196 __be32 label;
197 atomic_t users;
198 struct in6_addr dst;
199 struct ipv6_txoptions *opt;
200 unsigned long linger;
201 u8 share;
202 u32 owner;
203 unsigned long lastuse;
204 unsigned long expires;
205 struct net *fl_net;
206 };
207
208 #define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
209 #define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
210
211 struct ipv6_fl_socklist {
212 struct ipv6_fl_socklist *next;
213 struct ip6_flowlabel *fl;
214 };
215
216 extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
217 extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
218 struct ip6_flowlabel * fl,
219 struct ipv6_txoptions * fopt);
220 extern void fl6_free_socklist(struct sock *sk);
221 extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
222 extern int ip6_flowlabel_init(void);
223 extern void ip6_flowlabel_cleanup(void);
224
225 static inline void fl6_sock_release(struct ip6_flowlabel *fl)
226 {
227 if (fl)
228 atomic_dec(&fl->users);
229 }
230
231 extern int ip6_ra_control(struct sock *sk, int sel);
232
233 extern int ipv6_parse_hopopts(struct sk_buff *skb);
234
235 extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
236 extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
237 int newtype,
238 struct ipv6_opt_hdr __user *newopt,
239 int newoptlen);
240 struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
241 struct ipv6_txoptions *opt);
242
243 extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
244
245 int ip6_frag_nqueues(struct net *net);
246 int ip6_frag_mem(struct net *net);
247
248 #define IPV6_FRAG_HIGH_THRESH (256 * 1024) /* 262144 */
249 #define IPV6_FRAG_LOW_THRESH (192 * 1024) /* 196608 */
250 #define IPV6_FRAG_TIMEOUT (60 * HZ) /* 60 seconds */
251
252 extern int __ipv6_addr_type(const struct in6_addr *addr);
253 static inline int ipv6_addr_type(const struct in6_addr *addr)
254 {
255 return __ipv6_addr_type(addr) & 0xffff;
256 }
257
258 static inline int ipv6_addr_scope(const struct in6_addr *addr)
259 {
260 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
261 }
262
263 static inline int __ipv6_addr_src_scope(int type)
264 {
265 return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
266 }
267
268 static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
269 {
270 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
271 }
272
273 static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
274 {
275 return memcmp(a1, a2, sizeof(struct in6_addr));
276 }
277
278 static inline int
279 ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
280 const struct in6_addr *a2)
281 {
282 return (!!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
283 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
284 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
285 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])));
286 }
287
288 static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
289 {
290 memcpy(a1, a2, sizeof(struct in6_addr));
291 }
292
293 static inline void ipv6_addr_prefix(struct in6_addr *pfx,
294 const struct in6_addr *addr,
295 int plen)
296 {
297 /* caller must guarantee 0 <= plen <= 128 */
298 int o = plen >> 3,
299 b = plen & 0x7;
300
301 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
302 memcpy(pfx->s6_addr, addr, o);
303 if (b != 0)
304 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
305 }
306
307 static inline void ipv6_addr_set(struct in6_addr *addr,
308 __be32 w1, __be32 w2,
309 __be32 w3, __be32 w4)
310 {
311 addr->s6_addr32[0] = w1;
312 addr->s6_addr32[1] = w2;
313 addr->s6_addr32[2] = w3;
314 addr->s6_addr32[3] = w4;
315 }
316
317 static inline int ipv6_addr_equal(const struct in6_addr *a1,
318 const struct in6_addr *a2)
319 {
320 return (((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
321 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
322 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
323 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0);
324 }
325
326 static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
327 unsigned int prefixlen)
328 {
329 unsigned pdw, pbi;
330
331 /* check complete u32 in prefix */
332 pdw = prefixlen >> 5;
333 if (pdw && memcmp(a1, a2, pdw << 2))
334 return 0;
335
336 /* check incomplete u32 in prefix */
337 pbi = prefixlen & 0x1f;
338 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
339 return 0;
340
341 return 1;
342 }
343
344 static inline int ipv6_prefix_equal(const struct in6_addr *a1,
345 const struct in6_addr *a2,
346 unsigned int prefixlen)
347 {
348 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
349 prefixlen);
350 }
351
352 struct inet_frag_queue;
353
354 enum ip6_defrag_users {
355 IP6_DEFRAG_LOCAL_DELIVER,
356 IP6_DEFRAG_CONNTRACK_IN,
357 __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHRT_MAX,
358 IP6_DEFRAG_CONNTRACK_OUT,
359 __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHRT_MAX,
360 IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
361 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
362 };
363
364 struct ip6_create_arg {
365 __be32 id;
366 u32 user;
367 struct in6_addr *src;
368 struct in6_addr *dst;
369 };
370
371 void ip6_frag_init(struct inet_frag_queue *q, void *a);
372 int ip6_frag_match(struct inet_frag_queue *q, void *a);
373
374 static 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 static inline int ipv6_addr_loopback(const struct in6_addr *a)
381 {
382 return ((a->s6_addr32[0] | a->s6_addr32[1] |
383 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0);
384 }
385
386 static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
387 {
388 return ((a->s6_addr32[0] | a->s6_addr32[1] |
389 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0);
390 }
391
392 /*
393 * Check for a RFC 4843 ORCHID address
394 * (Overlay Routable Cryptographic Hash Identifiers)
395 */
396 static inline int ipv6_addr_orchid(const struct in6_addr *a)
397 {
398 return ((a->s6_addr32[0] & htonl(0xfffffff0))
399 == htonl(0x20010010));
400 }
401
402 static inline void ipv6_addr_set_v4mapped(const __be32 addr,
403 struct in6_addr *v4mapped)
404 {
405 ipv6_addr_set(v4mapped,
406 0, 0,
407 htonl(0x0000FFFF),
408 addr);
409 }
410
411 /*
412 * find the first different bit between two addresses
413 * length of address must be a multiple of 32bits
414 */
415 static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
416 {
417 const __be32 *a1 = token1, *a2 = token2;
418 int i;
419
420 addrlen >>= 2;
421
422 for (i = 0; i < addrlen; i++) {
423 __be32 xb = a1[i] ^ a2[i];
424 if (xb)
425 return i * 32 + 31 - __fls(ntohl(xb));
426 }
427
428 /*
429 * we should *never* get to this point since that
430 * would mean the addrs are equal
431 *
432 * However, we do get to it 8) And exacly, when
433 * addresses are equal 8)
434 *
435 * ip route add 1111::/128 via ...
436 * ip route add 1111::/64 via ...
437 * and we are here.
438 *
439 * Ideally, this function should stop comparison
440 * at prefix length. It does not, but it is still OK,
441 * if returned value is greater than prefix length.
442 * --ANK (980803)
443 */
444 return (addrlen << 5);
445 }
446
447 static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
448 {
449 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
450 }
451
452 static __inline__ void ipv6_select_ident(struct frag_hdr *fhdr)
453 {
454 static u32 ipv6_fragmentation_id = 1;
455 static DEFINE_SPINLOCK(ip6_id_lock);
456
457 spin_lock_bh(&ip6_id_lock);
458 fhdr->identification = htonl(ipv6_fragmentation_id);
459 if (++ipv6_fragmentation_id == 0)
460 ipv6_fragmentation_id = 1;
461 spin_unlock_bh(&ip6_id_lock);
462 }
463
464 /*
465 * Prototypes exported by ipv6
466 */
467
468 /*
469 * rcv function (called from netdevice level)
470 */
471
472 extern int ipv6_rcv(struct sk_buff *skb,
473 struct net_device *dev,
474 struct packet_type *pt,
475 struct net_device *orig_dev);
476
477 extern int ip6_rcv_finish(struct sk_buff *skb);
478
479 /*
480 * upper-layer output functions
481 */
482 extern int ip6_xmit(struct sock *sk,
483 struct sk_buff *skb,
484 struct flowi *fl,
485 struct ipv6_txoptions *opt);
486
487 extern int ip6_nd_hdr(struct sock *sk,
488 struct sk_buff *skb,
489 struct net_device *dev,
490 const struct in6_addr *saddr,
491 const struct in6_addr *daddr,
492 int proto, int len);
493
494 extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
495
496 extern int ip6_append_data(struct sock *sk,
497 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
498 void *from,
499 int length,
500 int transhdrlen,
501 int hlimit,
502 int tclass,
503 struct ipv6_txoptions *opt,
504 struct flowi *fl,
505 struct rt6_info *rt,
506 unsigned int flags,
507 int dontfrag);
508
509 extern int ip6_push_pending_frames(struct sock *sk);
510
511 extern void ip6_flush_pending_frames(struct sock *sk);
512
513 extern int ip6_dst_lookup(struct sock *sk,
514 struct dst_entry **dst,
515 struct flowi *fl);
516 extern int ip6_dst_blackhole(struct sock *sk,
517 struct dst_entry **dst,
518 struct flowi *fl);
519 extern int ip6_sk_dst_lookup(struct sock *sk,
520 struct dst_entry **dst,
521 struct flowi *fl);
522
523 /*
524 * skb processing functions
525 */
526
527 extern int ip6_output(struct sk_buff *skb);
528 extern int ip6_forward(struct sk_buff *skb);
529 extern int ip6_input(struct sk_buff *skb);
530 extern int ip6_mc_input(struct sk_buff *skb);
531
532 extern int __ip6_local_out(struct sk_buff *skb);
533 extern int ip6_local_out(struct sk_buff *skb);
534
535 /*
536 * Extension header (options) processing
537 */
538
539 extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
540 struct ipv6_txoptions *opt,
541 u8 *proto,
542 struct in6_addr **daddr_p);
543 extern void ipv6_push_frag_opts(struct sk_buff *skb,
544 struct ipv6_txoptions *opt,
545 u8 *proto);
546
547 extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
548 u8 *nexthdrp);
549
550 extern int ipv6_ext_hdr(u8 nexthdr);
551
552 extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
553
554 /*
555 * socket options (ipv6_sockglue.c)
556 */
557
558 extern int ipv6_setsockopt(struct sock *sk, int level,
559 int optname,
560 char __user *optval,
561 unsigned int optlen);
562 extern int ipv6_getsockopt(struct sock *sk, int level,
563 int optname,
564 char __user *optval,
565 int __user *optlen);
566 extern int compat_ipv6_setsockopt(struct sock *sk,
567 int level,
568 int optname,
569 char __user *optval,
570 unsigned int optlen);
571 extern int compat_ipv6_getsockopt(struct sock *sk,
572 int level,
573 int optname,
574 char __user *optval,
575 int __user *optlen);
576
577 extern int ip6_datagram_connect(struct sock *sk,
578 struct sockaddr *addr, int addr_len);
579
580 extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
581 extern int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len);
582 extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
583 u32 info, u8 *payload);
584 extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info);
585 extern void ipv6_local_rxpmtu(struct sock *sk, struct flowi *fl, u32 mtu);
586
587 extern int inet6_release(struct socket *sock);
588 extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
589 int addr_len);
590 extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
591 int *uaddr_len, int peer);
592 extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
593 unsigned long arg);
594
595 extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
596 struct sock *sk);
597
598 /*
599 * reassembly.c
600 */
601 extern const struct proto_ops inet6_stream_ops;
602 extern const struct proto_ops inet6_dgram_ops;
603
604 struct group_source_req;
605 struct group_filter;
606
607 extern int ip6_mc_source(int add, int omode, struct sock *sk,
608 struct group_source_req *pgsr);
609 extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
610 extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
611 struct group_filter __user *optval,
612 int __user *optlen);
613 extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
614 const struct in6_addr *daddr, u32 rnd);
615
616 #ifdef CONFIG_PROC_FS
617 extern int ac6_proc_init(struct net *net);
618 extern void ac6_proc_exit(struct net *net);
619 extern int raw6_proc_init(void);
620 extern void raw6_proc_exit(void);
621 extern int tcp6_proc_init(struct net *net);
622 extern void tcp6_proc_exit(struct net *net);
623 extern int udp6_proc_init(struct net *net);
624 extern void udp6_proc_exit(struct net *net);
625 extern int udplite6_proc_init(void);
626 extern void udplite6_proc_exit(void);
627 extern int ipv6_misc_proc_init(void);
628 extern void ipv6_misc_proc_exit(void);
629 extern int snmp6_register_dev(struct inet6_dev *idev);
630 extern int snmp6_unregister_dev(struct inet6_dev *idev);
631
632 #else
633 static inline int ac6_proc_init(struct net *net) { return 0; }
634 static inline void ac6_proc_exit(struct net *net) { }
635 static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
636 static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
637 #endif
638
639 #ifdef CONFIG_SYSCTL
640 extern ctl_table ipv6_route_table_template[];
641 extern ctl_table ipv6_icmp_table_template[];
642
643 extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
644 extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
645 extern int ipv6_sysctl_register(void);
646 extern void ipv6_sysctl_unregister(void);
647 extern int ipv6_static_sysctl_register(void);
648 extern void ipv6_static_sysctl_unregister(void);
649 #endif
650
651 #endif /* __KERNEL__ */
652 #endif /* _NET_IPV6_H */
Linux with added FPC-III support