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tcp: fix kernel panic with listening_get_next
[mirror_ubuntu-bionic-kernel.git] / include / net / ipv6.h
CommitLineData
1da177e4
LT		 1/*
2 * Linux INET6 implementation
3 *
4 * Authors:
5 * Pedro Roque <roque@di.fc.ul.pt>
6 *
1da177e4
LT		 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>
20283d84 18#include <net/if_inet6.h>
1da177e4
LT		 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. */
2b741653 42#define NEXTHDR_MOBILITY 135 /* Mobility header. */
1da177e4
LT		 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#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
77
78/*
79 * Addr scopes
80 */
81#ifdef __KERNEL__
82#define IPV6_ADDR_MC_SCOPE(a) \
83 ((a)->s6_addr[1] & 0x0f) /* nonstandard */
84#define __IPV6_ADDR_SCOPE_INVALID -1
85#endif
86#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
87#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
88#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
89#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
90#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
91
92/*
93 * fragmentation header
94 */
95
96struct frag_hdr {
44473a6b
AV		 97 __u8 nexthdr;
98 __u8 reserved;
99 __be16 frag_off;
100 __be32 identification;
1da177e4
LT		 101};
102
103#define IP6_MF 0x0001
104
105#ifdef __KERNEL__
106
107#include <net/sock.h>
108
109/* sysctls */
1da177e4 110extern int sysctl_mld_max_msf;
3d7cc2ba
PE		 111extern struct ctl_path net_ipv6_ctl_path[];
112
14878f75
DS		 113#define _DEVINC(statname, modifier, idev, field) \
114({ \
a11d206d
YH		 115 struct inet6_dev *_idev = (idev); \
116 if (likely(_idev != NULL)) \
14878f75
DS		 117 SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
118 SNMP_INC_STATS##modifier(statname##_statistics, (field)); \
a11d206d 119})
14878f75 120
8e7999c4
PE		 121#define _DEVADD(statname, modifier, idev, field, val) \
122({ \
123 struct inet6_dev *_idev = (idev); \
124 if (likely(_idev != NULL)) \
125 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
126 SNMP_ADD_STATS##modifier(statname##_statistics, (field), (val));\
127})
128
14878f75
DS		 129/* MIBs */
130DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
131
132#define IP6_INC_STATS(idev,field) _DEVINC(ipv6, , idev, field)
133#define IP6_INC_STATS_BH(idev,field) _DEVINC(ipv6, _BH, idev, field)
134#define IP6_INC_STATS_USER(idev,field) _DEVINC(ipv6, _USER, idev, field)
8e7999c4 135#define IP6_ADD_STATS_BH(idev,field,val) _DEVADD(ipv6, _BH, idev, field, val)
14878f75 136
1da177e4 137DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
14878f75
DS		 138DECLARE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg_statistics);
139
140#define ICMP6_INC_STATS(idev, field) _DEVINC(icmpv6, , idev, field)
141#define ICMP6_INC_STATS_BH(idev, field) _DEVINC(icmpv6, _BH, idev, field)
142#define ICMP6_INC_STATS_USER(idev, field) _DEVINC(icmpv6, _USER, idev, field)
143
14878f75
DS		 144#define ICMP6MSGOUT_INC_STATS(idev, field) \
145 _DEVINC(icmpv6msg, , idev, field +256)
146#define ICMP6MSGOUT_INC_STATS_BH(idev, field) \
147 _DEVINC(icmpv6msg, _BH, idev, field +256)
148#define ICMP6MSGOUT_INC_STATS_USER(idev, field) \
149 _DEVINC(icmpv6msg, _USER, idev, field +256)
150#define ICMP6MSGIN_INC_STATS(idev, field) \
151 _DEVINC(icmpv6msg, , idev, field)
152#define ICMP6MSGIN_INC_STATS_BH(idev, field) \
153 _DEVINC(icmpv6msg, _BH, idev, field)
154#define ICMP6MSGIN_INC_STATS_USER(idev, field) \
155 _DEVINC(icmpv6msg, _USER, idev, field)
156
1da177e4
LT		 157struct ip6_ra_chain
158{
159 struct ip6_ra_chain *next;
160 struct sock *sk;
161 int sel;
162 void (*destructor)(struct sock *);
163};
164
165extern struct ip6_ra_chain *ip6_ra_chain;
166extern rwlock_t ip6_ra_lock;
167
168/*
169 This structure is prepared by protocol, when parsing
170 ancillary data and passed to IPv6.
171 */
172
173struct ipv6_txoptions
174{
175 /* Length of this structure */
176 int tot_len;
177
178 /* length of extension headers */
179
180 __u16 opt_flen; /* after fragment hdr */
181 __u16 opt_nflen; /* before fragment hdr */
182
183 struct ipv6_opt_hdr *hopopt;
184 struct ipv6_opt_hdr *dst0opt;
185 struct ipv6_rt_hdr *srcrt; /* Routing Header */
1da177e4
LT		 186 struct ipv6_opt_hdr *dst1opt;
187
188 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
189};
190
191struct ip6_flowlabel
192{
193 struct ip6_flowlabel *next;
90bcaf7b 194 __be32 label;
db3459d1 195 atomic_t users;
1da177e4
LT		 196 struct in6_addr dst;
197 struct ipv6_txoptions *opt;
1da177e4
LT		 198 unsigned long linger;
199 u8 share;
200 u32 owner;
201 unsigned long lastuse;
202 unsigned long expires;
60e8fbc4 203 struct net *fl_net;
1da177e4
LT		 204};
205
206#define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF)
207#define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF)
208
209struct ipv6_fl_socklist
210{
211 struct ipv6_fl_socklist *next;
212 struct ip6_flowlabel *fl;
213};
214
90bcaf7b 215extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
1da177e4
LT		 216extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
217 struct ip6_flowlabel * fl,
218 struct ipv6_txoptions * fopt);
219extern void fl6_free_socklist(struct sock *sk);
220extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
0a3e78ac 221extern int ip6_flowlabel_init(void);
1da177e4
LT		 222extern void ip6_flowlabel_cleanup(void);
223
224static inline void fl6_sock_release(struct ip6_flowlabel *fl)
225{
226 if (fl)
227 atomic_dec(&fl->users);
228}
229
230extern int ip6_ra_control(struct sock *sk, int sel,
231 void (*destructor)(struct sock *));
232
233
e5bbef20 234extern int ipv6_parse_hopopts(struct sk_buff *skb);
1da177e4
LT		 235
236extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
333fad53
YH		 237extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
238 int newtype,
239 struct ipv6_opt_hdr __user *newopt,
240 int newoptlen);
df9890c3
YH		 241struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
242 struct ipv6_txoptions *opt);
1da177e4 243
399c07de
ACM		 244extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
245
e5a2bb84 246int ip6_frag_nqueues(struct net *net);
6ddc0822 247int ip6_frag_mem(struct net *net);
1da177e4
LT		 248
249#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */
250
b1cacb68
YH		 251extern int __ipv6_addr_type(const struct in6_addr *addr);
252static inline int ipv6_addr_type(const struct in6_addr *addr)
253{
254 return __ipv6_addr_type(addr) & 0xffff;
255}
1da177e4
LT		 256
257static inline int ipv6_addr_scope(const struct in6_addr *addr)
258{
b1cacb68
YH		 259 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
260}
261
262static inline int __ipv6_addr_src_scope(int type)
263{
264 return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
265}
266
267static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
268{
269 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
1da177e4
LT		 270}
271
272static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
273{
db3459d1 274 return memcmp(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 275}
276
f2ffd9ee
PM		 277static inline int
278ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
279 const struct in6_addr *a2)
280{
fed85383
YH		 281 return (!!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
282 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
283 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
284 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])));
f2ffd9ee
PM		 285}
286
1da177e4
LT		 287static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
288{
db3459d1 289 memcpy(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 290}
291
292static inline void ipv6_addr_prefix(struct in6_addr *pfx,
293 const struct in6_addr *addr,
294 int plen)
295{
296 /* caller must guarantee 0 <= plen <= 128 */
297 int o = plen >> 3,
298 b = plen & 0x7;
299
db3459d1 300 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
1da177e4 301 memcpy(pfx->s6_addr, addr, o);
db3459d1 302 if (b != 0)
1da177e4 303 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
1da177e4
LT		 304}
305
1da177e4 306static inline void ipv6_addr_set(struct in6_addr *addr,
48818f82
AV		 307 __be32 w1, __be32 w2,
308 __be32 w3, __be32 w4)
1da177e4
LT		 309{
310 addr->s6_addr32[0] = w1;
311 addr->s6_addr32[1] = w2;
312 addr->s6_addr32[2] = w3;
313 addr->s6_addr32[3] = w4;
314}
1da177e4
LT		 315
316static inline int ipv6_addr_equal(const struct in6_addr *a1,
317 const struct in6_addr *a2)
318{
fed85383
YH		 319 return (((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
320 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
321 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
322 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0);
1da177e4
LT		 323}
324
48818f82 325static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
1da177e4
LT		 326 unsigned int prefixlen)
327{
328 unsigned pdw, pbi;
329
330 /* check complete u32 in prefix */
331 pdw = prefixlen >> 5;
332 if (pdw && memcmp(a1, a2, pdw << 2))
333 return 0;
334
335 /* check incomplete u32 in prefix */
336 pbi = prefixlen & 0x1f;
337 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
338 return 0;
339
340 return 1;
341}
342
343static inline int ipv6_prefix_equal(const struct in6_addr *a1,
344 const struct in6_addr *a2,
345 unsigned int prefixlen)
346{
347 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
348 prefixlen);
349}
350
2588fe1d 351struct inet_frag_queue;
2588fe1d 352
c6fda282
PE		 353struct ip6_create_arg {
354 __be32 id;
355 struct in6_addr *src;
356 struct in6_addr *dst;
357};
358
359void ip6_frag_init(struct inet_frag_queue *q, void *a);
abd6523d 360int ip6_frag_match(struct inet_frag_queue *q, void *a);
c6fda282 361
1da177e4
LT		 362static inline int ipv6_addr_any(const struct in6_addr *a)
363{
364 return ((a->s6_addr32[0] | a->s6_addr32[1] |
365 a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
366}
367
f630e43a
YH		 368static inline int ipv6_addr_loopback(const struct in6_addr *a)
369{
370 return ((a->s6_addr32[0] | a->s6_addr32[1] |
371 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0);
372}
373
e773e4fa
BH		 374static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
375{
fed85383
YH		 376 return ((a->s6_addr32[0] | a->s6_addr32[1] |
377 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0);
e773e4fa
BH		 378}
379
99cd07a5
JMT		 380/*
381 * Check for a RFC 4843 ORCHID address
382 * (Overlay Routable Cryptographic Hash Identifiers)
383 */
384static inline int ipv6_addr_orchid(const struct in6_addr *a)
385{
386 return ((a->s6_addr32[0] & htonl(0xfffffff0))
387 == htonl(0x20010010));
388}
389
f15364bd
AC		 390static inline void ipv6_addr_set_v4mapped(const __be32 addr,
391 struct in6_addr *v4mapped)
392{
393 ipv6_addr_set(v4mapped,
394 0, 0,
395 htonl(0x0000FFFF),
396 addr);
397}
398
971f359d
YH		 399/*
400 * find the first different bit between two addresses
401 * length of address must be a multiple of 32bits
402 */
403static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
404{
ef296f56 405 const __be32 *a1 = token1, *a2 = token2;
971f359d
YH		 406 int i;
407
408 addrlen >>= 2;
409
410 for (i = 0; i < addrlen; i++) {
ef296f56
AV		 411 __be32 xb = a1[i] ^ a2[i];
412 if (xb)
413 return i * 32 + 32 - fls(ntohl(xb));
971f359d
YH		 414 }
415
416 /*
417 * we should *never* get to this point since that
418 * would mean the addrs are equal
419 *
420 * However, we do get to it 8) And exacly, when
421 * addresses are equal 8)
422 *
423 * ip route add 1111::/128 via ...
424 * ip route add 1111::/64 via ...
425 * and we are here.
426 *
427 * Ideally, this function should stop comparison
428 * at prefix length. It does not, but it is still OK,
429 * if returned value is greater than prefix length.
430 * --ANK (980803)
431 */
432 return (addrlen << 5);
433}
434
435static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
436{
437 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
438}
439
1da177e4
LT		 440/*
441 * Prototypes exported by ipv6
442 */
443
444/*
445 * rcv function (called from netdevice level)
446 */
447
448extern int ipv6_rcv(struct sk_buff *skb,
449 struct net_device *dev,
f2ccd8fa
DM		 450 struct packet_type *pt,
451 struct net_device *orig_dev);
1da177e4 452
b05e1066
PM		 453extern int ip6_rcv_finish(struct sk_buff *skb);
454
1da177e4
LT		 455/*
456 * upper-layer output functions
457 */
458extern int ip6_xmit(struct sock *sk,
459 struct sk_buff *skb,
460 struct flowi *fl,
461 struct ipv6_txoptions *opt,
462 int ipfragok);
463
464extern int ip6_nd_hdr(struct sock *sk,
465 struct sk_buff *skb,
466 struct net_device *dev,
9acd9f3a
YH		 467 const struct in6_addr *saddr,
468 const struct in6_addr *daddr,
1da177e4
LT		 469 int proto, int len);
470
471extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
472
473extern int ip6_append_data(struct sock *sk,
474 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
475 void *from,
476 int length,
477 int transhdrlen,
478 int hlimit,
41a1f8ea 479 int tclass,
1da177e4
LT		 480 struct ipv6_txoptions *opt,
481 struct flowi *fl,
482 struct rt6_info *rt,
483 unsigned int flags);
484
485extern int ip6_push_pending_frames(struct sock *sk);
486
487extern void ip6_flush_pending_frames(struct sock *sk);
488
489extern int ip6_dst_lookup(struct sock *sk,
490 struct dst_entry **dst,
491 struct flowi *fl);
14e50e57
DM		 492extern int ip6_dst_blackhole(struct sock *sk,
493 struct dst_entry **dst,
494 struct flowi *fl);
497c615a
HX		 495extern int ip6_sk_dst_lookup(struct sock *sk,
496 struct dst_entry **dst,
497 struct flowi *fl);
1da177e4
LT		 498
499/*
500 * skb processing functions
501 */
502
503extern int ip6_output(struct sk_buff *skb);
504extern int ip6_forward(struct sk_buff *skb);
505extern int ip6_input(struct sk_buff *skb);
506extern int ip6_mc_input(struct sk_buff *skb);
507
ef76bc23
HX		 508extern int __ip6_local_out(struct sk_buff *skb);
509extern int ip6_local_out(struct sk_buff *skb);
510
1da177e4
LT		 511/*
512 * Extension header (options) processing
513 */
514
1da177e4
LT		 515extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
516 struct ipv6_txoptions *opt,
517 u8 *proto,
518 struct in6_addr **daddr_p);
519extern void ipv6_push_frag_opts(struct sk_buff *skb,
520 struct ipv6_txoptions *opt,
521 u8 *proto);
522
523extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
0d3d077c 524 u8 *nexthdrp);
1da177e4
LT		 525
526extern int ipv6_ext_hdr(u8 nexthdr);
527
c61a4043
MN		 528extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
529
1da177e4
LT		 530/*
531 * socket options (ipv6_sockglue.c)
532 */
533
534extern int ipv6_setsockopt(struct sock *sk, int level,
535 int optname,
536 char __user *optval,
537 int optlen);
538extern int ipv6_getsockopt(struct sock *sk, int level,
539 int optname,
540 char __user *optval,
541 int __user *optlen);
3fdadf7d
DM		 542extern int compat_ipv6_setsockopt(struct sock *sk,
543 int level,
544 int optname,
545 char __user *optval,
546 int optlen);
547extern int compat_ipv6_getsockopt(struct sock *sk,
548 int level,
549 int optname,
550 char __user *optval,
551 int __user *optlen);
1da177e4 552
1da177e4
LT		 553extern int ip6_datagram_connect(struct sock *sk,
554 struct sockaddr *addr, int addr_len);
555
556extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
e69a4adc 557extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
1da177e4
LT		 558 u32 info, u8 *payload);
559extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info);
560
561extern int inet6_release(struct socket *sock);
562extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
563 int addr_len);
564extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
565 int *uaddr_len, int peer);
566extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
567 unsigned long arg);
568
d8313f5c
ACM		 569extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
570 struct sock *sk);
571
1da177e4
LT		 572/*
573 * reassembly.c
574 */
90ddc4f0
ED		 575extern const struct proto_ops inet6_stream_ops;
576extern const struct proto_ops inet6_dgram_ops;
20380731 577
14c85021
ACM		 578struct group_source_req;
579struct group_filter;
580
20380731
ACM		 581extern int ip6_mc_source(int add, int omode, struct sock *sk,
582 struct group_source_req *pgsr);
583extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
584extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
585 struct group_filter __user *optval,
586 int __user *optlen);
587
588#ifdef CONFIG_PROC_FS
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DL		 589extern int ac6_proc_init(struct net *net);
590extern void ac6_proc_exit(struct net *net);
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ACM		 591extern int raw6_proc_init(void);
592extern void raw6_proc_exit(void);
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DL		 593extern int tcp6_proc_init(struct net *net);
594extern void tcp6_proc_exit(struct net *net);
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DL		 595extern int udp6_proc_init(struct net *net);
596extern void udp6_proc_exit(struct net *net);
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GR		 597extern int udplite6_proc_init(void);
598extern void udplite6_proc_exit(void);
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ACM		 599extern int ipv6_misc_proc_init(void);
600extern void ipv6_misc_proc_exit(void);
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HX		 601extern int snmp6_register_dev(struct inet6_dev *idev);
602extern int snmp6_unregister_dev(struct inet6_dev *idev);
20380731 603
7f7d9a6b 604#else
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DL		 605static inline int ac6_proc_init(struct net *net) { return 0; }
606static inline void ac6_proc_exit(struct net *net) { }
607static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
608static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
20380731 609#endif
1da177e4 610
20380731 611#ifdef CONFIG_SYSCTL
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DL		 612extern ctl_table ipv6_route_table_template[];
613extern ctl_table ipv6_icmp_table_template[];
1da177e4 614
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DL		 615extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
616extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
291480c0 617extern int ipv6_sysctl_register(void);
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ACM		 618extern void ipv6_sysctl_unregister(void);
619#endif
1da177e4 620
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ACM		 621#endif /* __KERNEL__ */
622#endif /* _NET_IPV6_H */
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