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net: introduce ethernet teaming device
[GitHub/mt8127/android_kernel_alcatel_ttab.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
1da177e4
LT		 76
77/*
78 * Addr scopes
79 */
1da177e4
LT		 80#define IPV6_ADDR_MC_SCOPE(a) \
81 ((a)->s6_addr[1] & 0x0f) /* nonstandard */
82#define __IPV6_ADDR_SCOPE_INVALID -1
1da177e4
LT		 83#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
84#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
85#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
86#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
87#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
88
5ced1339
LL		 89/*
90 * Addr flags
91 */
5ced1339
LL		 92#define IPV6_ADDR_MC_FLAG_TRANSIENT(a) \
93 ((a)->s6_addr[1] & 0x10)
94#define IPV6_ADDR_MC_FLAG_PREFIX(a) \
95 ((a)->s6_addr[1] & 0x20)
96#define IPV6_ADDR_MC_FLAG_RENDEZVOUS(a) \
97 ((a)->s6_addr[1] & 0x40)
5ced1339 98
1da177e4
LT		 99/*
100 * fragmentation header
101 */
102
103struct frag_hdr {
44473a6b
AV		 104 __u8 nexthdr;
105 __u8 reserved;
106 __be16 frag_off;
107 __be32 identification;
1da177e4
LT		 108};
109
110#define IP6_MF 0x0001
111
1da177e4
LT		 112#include <net/sock.h>
113
114/* sysctls */
1da177e4 115extern int sysctl_mld_max_msf;
3d7cc2ba
PE		 116extern struct ctl_path net_ipv6_ctl_path[];
117
087fe240 118#define _DEVINC(net, statname, modifier, idev, field) \
14878f75 119({ \
a11d206d
YH		 120 struct inet6_dev *_idev = (idev); \
121 if (likely(_idev != NULL)) \
14878f75 122 SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
9261e537 123 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
a11d206d 124})
14878f75 125
be281e55
ED		 126/* per device counters are atomic_long_t */
127#define _DEVINCATOMIC(net, statname, modifier, idev, field) \
128({ \
129 struct inet6_dev *_idev = (idev); \
130 if (likely(_idev != NULL)) \
131 SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \
132 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
133})
134
087fe240 135#define _DEVADD(net, statname, modifier, idev, field, val) \
8e7999c4
PE		 136({ \
137 struct inet6_dev *_idev = (idev); \
138 if (likely(_idev != NULL)) \
139 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
9261e537 140 SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
8e7999c4
PE		 141})
142
edf391ff
NH		 143#define _DEVUPD(net, statname, modifier, idev, field, val) \
144({ \
145 struct inet6_dev *_idev = (idev); \
146 if (likely(_idev != NULL)) \
147 SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
148 SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
149})
150
14878f75 151/* MIBs */
14878f75 152
087fe240 153#define IP6_INC_STATS(net, idev,field) \
4ce3c183 154 _DEVINC(net, ipv6, 64, idev, field)
087fe240 155#define IP6_INC_STATS_BH(net, idev,field) \
4ce3c183 156 _DEVINC(net, ipv6, 64_BH, idev, field)
edf391ff 157#define IP6_ADD_STATS(net, idev,field,val) \
4ce3c183 158 _DEVADD(net, ipv6, 64, idev, field, val)
087fe240 159#define IP6_ADD_STATS_BH(net, idev,field,val) \
4ce3c183 160 _DEVADD(net, ipv6, 64_BH, idev, field, val)
edf391ff 161#define IP6_UPD_PO_STATS(net, idev,field,val) \
4ce3c183 162 _DEVUPD(net, ipv6, 64, idev, field, val)
edf391ff 163#define IP6_UPD_PO_STATS_BH(net, idev,field,val) \
4ce3c183 164 _DEVUPD(net, ipv6, 64_BH, idev, field, val)
087fe240 165#define ICMP6_INC_STATS(net, idev, field) \
be281e55 166 _DEVINCATOMIC(net, icmpv6, , idev, field)
087fe240 167#define ICMP6_INC_STATS_BH(net, idev, field) \
be281e55 168 _DEVINCATOMIC(net, icmpv6, _BH, idev, field)
087fe240
DL		 169
170#define ICMP6MSGOUT_INC_STATS(net, idev, field) \
be281e55 171 _DEVINCATOMIC(net, icmpv6msg, , idev, field +256)
087fe240 172#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
be281e55 173 _DEVINCATOMIC(net, icmpv6msg, _BH, idev, field +256)
087fe240 174#define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
be281e55 175 _DEVINCATOMIC(net, icmpv6msg, _BH, idev, field)
14878f75 176
fd2c3ef7 177struct ip6_ra_chain {
1da177e4
LT		 178 struct ip6_ra_chain *next;
179 struct sock *sk;
180 int sel;
181 void (*destructor)(struct sock *);
182};
183
184extern struct ip6_ra_chain *ip6_ra_chain;
185extern rwlock_t ip6_ra_lock;
186
187/*
188 This structure is prepared by protocol, when parsing
189 ancillary data and passed to IPv6.
190 */
191
fd2c3ef7 192struct ipv6_txoptions {
1da177e4
LT		 193 /* Length of this structure */
194 int tot_len;
195
196 /* length of extension headers */
197
198 __u16 opt_flen; /* after fragment hdr */
199 __u16 opt_nflen; /* before fragment hdr */
200
201 struct ipv6_opt_hdr *hopopt;
202 struct ipv6_opt_hdr *dst0opt;
203 struct ipv6_rt_hdr *srcrt; /* Routing Header */
1da177e4
LT		 204 struct ipv6_opt_hdr *dst1opt;
205
206 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
207};
208
fd2c3ef7 209struct ip6_flowlabel {
1da177e4 210 struct ip6_flowlabel *next;
90bcaf7b 211 __be32 label;
db3459d1 212 atomic_t users;
1da177e4
LT		 213 struct in6_addr dst;
214 struct ipv6_txoptions *opt;
1da177e4
LT		 215 unsigned long linger;
216 u8 share;
217 u32 owner;
218 unsigned long lastuse;
219 unsigned long expires;
60e8fbc4 220 struct net *fl_net;
1da177e4
LT		 221};
222
f3a7c66b
HH		 223#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
224#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
1da177e4 225
fd2c3ef7 226struct ipv6_fl_socklist {
1da177e4
LT		 227 struct ipv6_fl_socklist *next;
228 struct ip6_flowlabel *fl;
229};
230
90bcaf7b 231extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
1da177e4
LT		 232extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
233 struct ip6_flowlabel * fl,
234 struct ipv6_txoptions * fopt);
235extern void fl6_free_socklist(struct sock *sk);
236extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
0a3e78ac 237extern int ip6_flowlabel_init(void);
1da177e4
LT		 238extern void ip6_flowlabel_cleanup(void);
239
240static inline void fl6_sock_release(struct ip6_flowlabel *fl)
241{
242 if (fl)
243 atomic_dec(&fl->users);
244}
245
725a8ff0 246extern int ip6_ra_control(struct sock *sk, int sel);
1da177e4 247
e5bbef20 248extern int ipv6_parse_hopopts(struct sk_buff *skb);
1da177e4
LT		 249
250extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
333fad53
YH		 251extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
252 int newtype,
253 struct ipv6_opt_hdr __user *newopt,
254 int newoptlen);
df9890c3
YH		 255struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
256 struct ipv6_txoptions *opt);
1da177e4 257
399c07de
ACM		 258extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
259
e5a2bb84 260int ip6_frag_nqueues(struct net *net);
6ddc0822 261int ip6_frag_mem(struct net *net);
1da177e4 262
9874c41c
JP		 263#define IPV6_FRAG_HIGH_THRESH (256 * 1024) /* 262144 */
264#define IPV6_FRAG_LOW_THRESH (192 * 1024) /* 196608 */
265#define IPV6_FRAG_TIMEOUT (60 * HZ) /* 60 seconds */
1da177e4 266
b1cacb68
YH		 267extern int __ipv6_addr_type(const struct in6_addr *addr);
268static inline int ipv6_addr_type(const struct in6_addr *addr)
269{
270 return __ipv6_addr_type(addr) & 0xffff;
271}
1da177e4
LT		 272
273static inline int ipv6_addr_scope(const struct in6_addr *addr)
274{
b1cacb68
YH		 275 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
276}
277
278static inline int __ipv6_addr_src_scope(int type)
279{
a02cec21 280 return (type == IPV6_ADDR_ANY) ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16);
b1cacb68
YH		 281}
282
283static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
284{
285 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
1da177e4
LT		 286}
287
288static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
289{
db3459d1 290 return memcmp(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 291}
292
f2ffd9ee
PM		 293static inline int
294ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
295 const struct in6_addr *a2)
296{
a02cec21
ED		 297 return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
298 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
299 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
300 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3]));
f2ffd9ee
PM		 301}
302
1da177e4
LT		 303static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
304{
db3459d1 305 memcpy(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 306}
307
308static inline void ipv6_addr_prefix(struct in6_addr *pfx,
309 const struct in6_addr *addr,
310 int plen)
311{
312 /* caller must guarantee 0 <= plen <= 128 */
313 int o = plen >> 3,
314 b = plen & 0x7;
315
db3459d1 316 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
1da177e4 317 memcpy(pfx->s6_addr, addr, o);
db3459d1 318 if (b != 0)
1da177e4 319 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
1da177e4
LT		 320}
321
1da177e4 322static inline void ipv6_addr_set(struct in6_addr *addr,
48818f82
AV		 323 __be32 w1, __be32 w2,
324 __be32 w3, __be32 w4)
1da177e4
LT		 325{
326 addr->s6_addr32[0] = w1;
327 addr->s6_addr32[1] = w2;
328 addr->s6_addr32[2] = w3;
329 addr->s6_addr32[3] = w4;
330}
1da177e4
LT		 331
332static inline int ipv6_addr_equal(const struct in6_addr *a1,
333 const struct in6_addr *a2)
334{
a02cec21
ED		 335 return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
336 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
337 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
338 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0;
1da177e4
LT		 339}
340
48818f82 341static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
1da177e4
LT		 342 unsigned int prefixlen)
343{
344 unsigned pdw, pbi;
345
346 /* check complete u32 in prefix */
347 pdw = prefixlen >> 5;
348 if (pdw && memcmp(a1, a2, pdw << 2))
349 return 0;
350
351 /* check incomplete u32 in prefix */
352 pbi = prefixlen & 0x1f;
353 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
354 return 0;
355
356 return 1;
357}
358
359static inline int ipv6_prefix_equal(const struct in6_addr *a1,
360 const struct in6_addr *a2,
361 unsigned int prefixlen)
362{
363 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
364 prefixlen);
365}
366
2588fe1d 367struct inet_frag_queue;
2588fe1d 368
0b5ccb2e
PM		 369enum ip6_defrag_users {
370 IP6_DEFRAG_LOCAL_DELIVER,
371 IP6_DEFRAG_CONNTRACK_IN,
4be929be 372 __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHRT_MAX,
0b5ccb2e 373 IP6_DEFRAG_CONNTRACK_OUT,
4be929be 374 __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHRT_MAX,
8fa9ff68 375 IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
4be929be 376 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
0b5ccb2e
PM		 377};
378
c6fda282
PE		 379struct ip6_create_arg {
380 __be32 id;
0b5ccb2e 381 u32 user;
b71d1d42
ED		 382 const struct in6_addr *src;
383 const struct in6_addr *dst;
c6fda282
PE		 384};
385
386void ip6_frag_init(struct inet_frag_queue *q, void *a);
abd6523d 387int ip6_frag_match(struct inet_frag_queue *q, void *a);
c6fda282 388
1da177e4
LT		 389static inline int ipv6_addr_any(const struct in6_addr *a)
390{
a02cec21
ED		 391 return (a->s6_addr32[0] | a->s6_addr32[1] |
392 a->s6_addr32[2] | a->s6_addr32[3]) == 0;
1da177e4
LT		 393}
394
f630e43a
YH		 395static inline int ipv6_addr_loopback(const struct in6_addr *a)
396{
a02cec21
ED		 397 return (a->s6_addr32[0] | a->s6_addr32[1] |
398 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0;
f630e43a
YH		 399}
400
e773e4fa
BH		 401static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
402{
a02cec21
ED		 403 return (a->s6_addr32[0] | a->s6_addr32[1] |
404 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0;
e773e4fa
BH		 405}
406
99cd07a5
JMT		 407/*
408 * Check for a RFC 4843 ORCHID address
409 * (Overlay Routable Cryptographic Hash Identifiers)
410 */
411static inline int ipv6_addr_orchid(const struct in6_addr *a)
412{
a02cec21 413 return (a->s6_addr32[0] & htonl(0xfffffff0)) == htonl(0x20010010);
99cd07a5
JMT		 414}
415
f15364bd
AC		 416static inline void ipv6_addr_set_v4mapped(const __be32 addr,
417 struct in6_addr *v4mapped)
418{
419 ipv6_addr_set(v4mapped,
420 0, 0,
421 htonl(0x0000FFFF),
422 addr);
423}
424
971f359d
YH		 425/*
426 * find the first different bit between two addresses
427 * length of address must be a multiple of 32bits
428 */
429static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
430{
ef296f56 431 const __be32 *a1 = token1, *a2 = token2;
971f359d
YH		 432 int i;
433
434 addrlen >>= 2;
435
436 for (i = 0; i < addrlen; i++) {
ef296f56
AV		 437 __be32 xb = a1[i] ^ a2[i];
438 if (xb)
d57b8fb8 439 return i * 32 + 31 - __fls(ntohl(xb));
971f359d
YH		 440 }
441
442 /*
443 * we should *never* get to this point since that
444 * would mean the addrs are equal
445 *
446 * However, we do get to it 8) And exacly, when
447 * addresses are equal 8)
448 *
449 * ip route add 1111::/128 via ...
450 * ip route add 1111::/64 via ...
451 * and we are here.
452 *
453 * Ideally, this function should stop comparison
454 * at prefix length. It does not, but it is still OK,
455 * if returned value is greater than prefix length.
456 * --ANK (980803)
457 */
a02cec21 458 return addrlen << 5;
971f359d
YH		 459}
460
461static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
462{
463 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
464}
465
87c48fa3 466extern void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);
7ea2f2c5 467
1da177e4
LT		 468/*
469 * Prototypes exported by ipv6
470 */
471
472/*
473 * rcv function (called from netdevice level)
474 */
475
476extern int ipv6_rcv(struct sk_buff *skb,
477 struct net_device *dev,
f2ccd8fa
DM		 478 struct packet_type *pt,
479 struct net_device *orig_dev);
1da177e4 480
b05e1066
PM		 481extern int ip6_rcv_finish(struct sk_buff *skb);
482
1da177e4
LT		 483/*
484 * upper-layer output functions
485 */
486extern int ip6_xmit(struct sock *sk,
487 struct sk_buff *skb,
4c9483b2 488 struct flowi6 *fl6,
b903d324
ED		 489 struct ipv6_txoptions *opt,
490 int tclass);
1da177e4
LT		 491
492extern int ip6_nd_hdr(struct sock *sk,
493 struct sk_buff *skb,
494 struct net_device *dev,
9acd9f3a
YH		 495 const struct in6_addr *saddr,
496 const struct in6_addr *daddr,
1da177e4
LT		 497 int proto, int len);
498
499extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
500
501extern int ip6_append_data(struct sock *sk,
502 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
503 void *from,
504 int length,
505 int transhdrlen,
506 int hlimit,
41a1f8ea 507 int tclass,
1da177e4 508 struct ipv6_txoptions *opt,
4c9483b2 509 struct flowi6 *fl6,
1da177e4 510 struct rt6_info *rt,
13b52cd4
BH		 511 unsigned int flags,
512 int dontfrag);
1da177e4
LT		 513
514extern int ip6_push_pending_frames(struct sock *sk);
515
516extern void ip6_flush_pending_frames(struct sock *sk);
517
518extern int ip6_dst_lookup(struct sock *sk,
519 struct dst_entry **dst,
4c9483b2 520 struct flowi6 *fl6);
68d0c6d3 521extern struct dst_entry * ip6_dst_lookup_flow(struct sock *sk,
4c9483b2 522 struct flowi6 *fl6,
68d0c6d3 523 const struct in6_addr *final_dst,
a1414715 524 bool can_sleep);
68d0c6d3 525extern struct dst_entry * ip6_sk_dst_lookup_flow(struct sock *sk,
4c9483b2 526 struct flowi6 *fl6,
68d0c6d3 527 const struct in6_addr *final_dst,
a1414715 528 bool can_sleep);
2774c131
DM		 529extern struct dst_entry * ip6_blackhole_route(struct net *net,
530 struct dst_entry *orig_dst);
1da177e4
LT		 531
532/*
533 * skb processing functions
534 */
535
536extern int ip6_output(struct sk_buff *skb);
537extern int ip6_forward(struct sk_buff *skb);
538extern int ip6_input(struct sk_buff *skb);
539extern int ip6_mc_input(struct sk_buff *skb);
540
ef76bc23
HX		 541extern int __ip6_local_out(struct sk_buff *skb);
542extern int ip6_local_out(struct sk_buff *skb);
543
1da177e4
LT		 544/*
545 * Extension header (options) processing
546 */
547
1da177e4
LT		 548extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
549 struct ipv6_txoptions *opt,
550 u8 *proto,
551 struct in6_addr **daddr_p);
552extern void ipv6_push_frag_opts(struct sk_buff *skb,
553 struct ipv6_txoptions *opt,
554 u8 *proto);
555
556extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
0d3d077c 557 u8 *nexthdrp);
1da177e4
LT		 558
559extern int ipv6_ext_hdr(u8 nexthdr);
560
c61a4043
MN		 561extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
562
4c9483b2 563extern struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
20c59de2
AE		 564 const struct ipv6_txoptions *opt,
565 struct in6_addr *orig);
566
1da177e4
LT		 567/*
568 * socket options (ipv6_sockglue.c)
569 */
570
571extern int ipv6_setsockopt(struct sock *sk, int level,
572 int optname,
573 char __user *optval,
b7058842 574 unsigned int optlen);
1da177e4
LT		 575extern int ipv6_getsockopt(struct sock *sk, int level,
576 int optname,
577 char __user *optval,
578 int __user *optlen);
3fdadf7d
DM		 579extern int compat_ipv6_setsockopt(struct sock *sk,
580 int level,
581 int optname,
582 char __user *optval,
b7058842 583 unsigned int optlen);
3fdadf7d
DM		 584extern int compat_ipv6_getsockopt(struct sock *sk,
585 int level,
586 int optname,
587 char __user *optval,
588 int __user *optlen);
1da177e4 589
1da177e4
LT		 590extern int ip6_datagram_connect(struct sock *sk,
591 struct sockaddr *addr, int addr_len);
592
593extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
4b340ae2 594extern int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len);
e69a4adc 595extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
1da177e4 596 u32 info, u8 *payload);
4c9483b2
DM		 597extern void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info);
598extern void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
1da177e4
LT		 599
600extern int inet6_release(struct socket *sock);
601extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
602 int addr_len);
603extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
604 int *uaddr_len, int peer);
605extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
606 unsigned long arg);
607
d8313f5c
ACM		 608extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
609 struct sock *sk);
610
1da177e4
LT		 611/*
612 * reassembly.c
613 */
90ddc4f0
ED		 614extern const struct proto_ops inet6_stream_ops;
615extern const struct proto_ops inet6_dgram_ops;
20380731 616
14c85021
ACM		 617struct group_source_req;
618struct group_filter;
619
20380731
ACM		 620extern int ip6_mc_source(int add, int omode, struct sock *sk,
621 struct group_source_req *pgsr);
622extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
623extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
624 struct group_filter __user *optval,
625 int __user *optlen);
93c8b90f
IJ		 626extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
627 const struct in6_addr *daddr, u32 rnd);
20380731
ACM		 628
629#ifdef CONFIG_PROC_FS
6ab57e7e
DL		 630extern int ac6_proc_init(struct net *net);
631extern void ac6_proc_exit(struct net *net);
20380731
ACM		 632extern int raw6_proc_init(void);
633extern void raw6_proc_exit(void);
6f8b13bc
DL		 634extern int tcp6_proc_init(struct net *net);
635extern void tcp6_proc_exit(struct net *net);
0c96d8c5
DL		 636extern int udp6_proc_init(struct net *net);
637extern void udp6_proc_exit(struct net *net);
ba4e58ec
GR		 638extern int udplite6_proc_init(void);
639extern void udplite6_proc_exit(void);
20380731
ACM		 640extern int ipv6_misc_proc_init(void);
641extern void ipv6_misc_proc_exit(void);
7f7d9a6b
HX		 642extern int snmp6_register_dev(struct inet6_dev *idev);
643extern int snmp6_unregister_dev(struct inet6_dev *idev);
20380731 644
7f7d9a6b 645#else
6ab57e7e
DL		 646static inline int ac6_proc_init(struct net *net) { return 0; }
647static inline void ac6_proc_exit(struct net *net) { }
648static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
649static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
20380731 650#endif
1da177e4 651
20380731 652#ifdef CONFIG_SYSCTL
760f2d01
DL		 653extern ctl_table ipv6_route_table_template[];
654extern ctl_table ipv6_icmp_table_template[];
1da177e4 655
6de1a910
DL		 656extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
657extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
291480c0 658extern int ipv6_sysctl_register(void);
20380731 659extern void ipv6_sysctl_unregister(void);
eeb61f71
AV		 660extern int ipv6_static_sysctl_register(void);
661extern void ipv6_static_sysctl_unregister(void);
20380731 662#endif
1da177e4 663
20380731 664#endif /* _NET_IPV6_H */
kernel source for telekom puls (alcatel/mediatek)