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net: cleanup unsigned to unsigned int
[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
2a24444f
ED		 135/* per device and per net counters are atomic_long_t */
136#define _DEVINC_ATOMIC_ATOMIC(net, statname, idev, field) \
137({ \
138 struct inet6_dev *_idev = (idev); \
139 if (likely(_idev != NULL)) \
140 SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \
141 SNMP_INC_STATS_ATOMIC_LONG((net)->mib.statname##_statistics, (field));\
142})
143
087fe240 144#define _DEVADD(net, statname, modifier, idev, field, val) \
8e7999c4
PE		 145({ \
146 struct inet6_dev *_idev = (idev); \
147 if (likely(_idev != NULL)) \
148 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
9261e537 149 SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
8e7999c4
PE		 150})
151
edf391ff
NH		 152#define _DEVUPD(net, statname, modifier, idev, field, val) \
153({ \
154 struct inet6_dev *_idev = (idev); \
155 if (likely(_idev != NULL)) \
156 SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
157 SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
158})
159
14878f75 160/* MIBs */
14878f75 161
087fe240 162#define IP6_INC_STATS(net, idev,field) \
4ce3c183 163 _DEVINC(net, ipv6, 64, idev, field)
087fe240 164#define IP6_INC_STATS_BH(net, idev,field) \
4ce3c183 165 _DEVINC(net, ipv6, 64_BH, idev, field)
edf391ff 166#define IP6_ADD_STATS(net, idev,field,val) \
4ce3c183 167 _DEVADD(net, ipv6, 64, idev, field, val)
087fe240 168#define IP6_ADD_STATS_BH(net, idev,field,val) \
4ce3c183 169 _DEVADD(net, ipv6, 64_BH, idev, field, val)
edf391ff 170#define IP6_UPD_PO_STATS(net, idev,field,val) \
4ce3c183 171 _DEVUPD(net, ipv6, 64, idev, field, val)
edf391ff 172#define IP6_UPD_PO_STATS_BH(net, idev,field,val) \
4ce3c183 173 _DEVUPD(net, ipv6, 64_BH, idev, field, val)
087fe240 174#define ICMP6_INC_STATS(net, idev, field) \
be281e55 175 _DEVINCATOMIC(net, icmpv6, , idev, field)
087fe240 176#define ICMP6_INC_STATS_BH(net, idev, field) \
be281e55 177 _DEVINCATOMIC(net, icmpv6, _BH, idev, field)
087fe240
DL		 178
179#define ICMP6MSGOUT_INC_STATS(net, idev, field) \
2a24444f 180 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256)
087fe240 181#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
2a24444f 182 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256)
087fe240 183#define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
2a24444f 184 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field)
14878f75 185
fd2c3ef7 186struct ip6_ra_chain {
1da177e4
LT		 187 struct ip6_ra_chain *next;
188 struct sock *sk;
189 int sel;
190 void (*destructor)(struct sock *);
191};
192
193extern struct ip6_ra_chain *ip6_ra_chain;
194extern rwlock_t ip6_ra_lock;
195
196/*
197 This structure is prepared by protocol, when parsing
198 ancillary data and passed to IPv6.
199 */
200
fd2c3ef7 201struct ipv6_txoptions {
1da177e4
LT		 202 /* Length of this structure */
203 int tot_len;
204
205 /* length of extension headers */
206
207 __u16 opt_flen; /* after fragment hdr */
208 __u16 opt_nflen; /* before fragment hdr */
209
210 struct ipv6_opt_hdr *hopopt;
211 struct ipv6_opt_hdr *dst0opt;
212 struct ipv6_rt_hdr *srcrt; /* Routing Header */
1da177e4
LT		 213 struct ipv6_opt_hdr *dst1opt;
214
215 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
216};
217
fd2c3ef7 218struct ip6_flowlabel {
1da177e4 219 struct ip6_flowlabel *next;
90bcaf7b 220 __be32 label;
db3459d1 221 atomic_t users;
1da177e4
LT		 222 struct in6_addr dst;
223 struct ipv6_txoptions *opt;
1da177e4
LT		 224 unsigned long linger;
225 u8 share;
226 u32 owner;
227 unsigned long lastuse;
228 unsigned long expires;
60e8fbc4 229 struct net *fl_net;
1da177e4
LT		 230};
231
f3a7c66b
HH		 232#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
233#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
1da177e4 234
fd2c3ef7 235struct ipv6_fl_socklist {
1da177e4
LT		 236 struct ipv6_fl_socklist *next;
237 struct ip6_flowlabel *fl;
238};
239
90bcaf7b 240extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
1da177e4
LT		 241extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
242 struct ip6_flowlabel * fl,
243 struct ipv6_txoptions * fopt);
244extern void fl6_free_socklist(struct sock *sk);
245extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
0a3e78ac 246extern int ip6_flowlabel_init(void);
1da177e4
LT		 247extern void ip6_flowlabel_cleanup(void);
248
249static inline void fl6_sock_release(struct ip6_flowlabel *fl)
250{
251 if (fl)
252 atomic_dec(&fl->users);
253}
254
725a8ff0 255extern int ip6_ra_control(struct sock *sk, int sel);
1da177e4 256
e5bbef20 257extern int ipv6_parse_hopopts(struct sk_buff *skb);
1da177e4
LT		 258
259extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
333fad53
YH		 260extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
261 int newtype,
262 struct ipv6_opt_hdr __user *newopt,
263 int newoptlen);
df9890c3
YH		 264struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
265 struct ipv6_txoptions *opt);
1da177e4 266
399c07de
ACM		 267extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
268
e5a2bb84 269int ip6_frag_nqueues(struct net *net);
6ddc0822 270int ip6_frag_mem(struct net *net);
1da177e4 271
9874c41c
JP		 272#define IPV6_FRAG_HIGH_THRESH (256 * 1024) /* 262144 */
273#define IPV6_FRAG_LOW_THRESH (192 * 1024) /* 196608 */
274#define IPV6_FRAG_TIMEOUT (60 * HZ) /* 60 seconds */
1da177e4 275
b1cacb68
YH		 276extern int __ipv6_addr_type(const struct in6_addr *addr);
277static inline int ipv6_addr_type(const struct in6_addr *addr)
278{
279 return __ipv6_addr_type(addr) & 0xffff;
280}
1da177e4
LT		 281
282static inline int ipv6_addr_scope(const struct in6_addr *addr)
283{
b1cacb68
YH		 284 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
285}
286
287static inline int __ipv6_addr_src_scope(int type)
288{
a02cec21 289 return (type == IPV6_ADDR_ANY) ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16);
b1cacb68
YH		 290}
291
292static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
293{
294 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
1da177e4
LT		 295}
296
297static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
298{
db3459d1 299 return memcmp(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 300}
301
f2ffd9ee
PM		 302static inline int
303ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
304 const struct in6_addr *a2)
305{
a02cec21
ED		 306 return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
307 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
308 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
309 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3]));
f2ffd9ee
PM		 310}
311
1da177e4
LT		 312static inline void ipv6_addr_prefix(struct in6_addr *pfx,
313 const struct in6_addr *addr,
314 int plen)
315{
316 /* caller must guarantee 0 <= plen <= 128 */
317 int o = plen >> 3,
318 b = plen & 0x7;
319
db3459d1 320 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
1da177e4 321 memcpy(pfx->s6_addr, addr, o);
db3459d1 322 if (b != 0)
1da177e4 323 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
1da177e4
LT		 324}
325
1da177e4 326static inline void ipv6_addr_set(struct in6_addr *addr,
48818f82
AV		 327 __be32 w1, __be32 w2,
328 __be32 w3, __be32 w4)
1da177e4
LT		 329{
330 addr->s6_addr32[0] = w1;
331 addr->s6_addr32[1] = w2;
332 addr->s6_addr32[2] = w3;
333 addr->s6_addr32[3] = w4;
334}
1da177e4
LT		 335
336static inline int ipv6_addr_equal(const struct in6_addr *a1,
337 const struct in6_addr *a2)
338{
a02cec21
ED		 339 return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
340 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
341 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
342 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0;
1da177e4
LT		 343}
344
48818f82 345static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
1da177e4
LT		 346 unsigned int prefixlen)
347{
95c96174 348 unsigned int pdw, pbi;
1da177e4
LT		 349
350 /* check complete u32 in prefix */
351 pdw = prefixlen >> 5;
352 if (pdw && memcmp(a1, a2, pdw << 2))
353 return 0;
354
355 /* check incomplete u32 in prefix */
356 pbi = prefixlen & 0x1f;
357 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
358 return 0;
359
360 return 1;
361}
362
363static inline int ipv6_prefix_equal(const struct in6_addr *a1,
364 const struct in6_addr *a2,
365 unsigned int prefixlen)
366{
367 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
368 prefixlen);
369}
370
2588fe1d 371struct inet_frag_queue;
2588fe1d 372
0b5ccb2e
PM		 373enum ip6_defrag_users {
374 IP6_DEFRAG_LOCAL_DELIVER,
375 IP6_DEFRAG_CONNTRACK_IN,
4be929be 376 __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHRT_MAX,
0b5ccb2e 377 IP6_DEFRAG_CONNTRACK_OUT,
4be929be 378 __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHRT_MAX,
8fa9ff68 379 IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
4be929be 380 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
0b5ccb2e
PM		 381};
382
c6fda282
PE		 383struct ip6_create_arg {
384 __be32 id;
0b5ccb2e 385 u32 user;
b71d1d42
ED		 386 const struct in6_addr *src;
387 const struct in6_addr *dst;
c6fda282
PE		 388};
389
390void ip6_frag_init(struct inet_frag_queue *q, void *a);
abd6523d 391int ip6_frag_match(struct inet_frag_queue *q, void *a);
c6fda282 392
1da177e4
LT		 393static inline int ipv6_addr_any(const struct in6_addr *a)
394{
a02cec21
ED		 395 return (a->s6_addr32[0] | a->s6_addr32[1] |
396 a->s6_addr32[2] | a->s6_addr32[3]) == 0;
1da177e4
LT		 397}
398
f630e43a
YH		 399static inline int ipv6_addr_loopback(const struct in6_addr *a)
400{
a02cec21
ED		 401 return (a->s6_addr32[0] | a->s6_addr32[1] |
402 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0;
f630e43a
YH		 403}
404
e773e4fa
BH		 405static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
406{
a02cec21
ED		 407 return (a->s6_addr32[0] | a->s6_addr32[1] |
408 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0;
e773e4fa
BH		 409}
410
99cd07a5
JMT		 411/*
412 * Check for a RFC 4843 ORCHID address
413 * (Overlay Routable Cryptographic Hash Identifiers)
414 */
415static inline int ipv6_addr_orchid(const struct in6_addr *a)
416{
a02cec21 417 return (a->s6_addr32[0] & htonl(0xfffffff0)) == htonl(0x20010010);
99cd07a5
JMT		 418}
419
f15364bd
AC		 420static inline void ipv6_addr_set_v4mapped(const __be32 addr,
421 struct in6_addr *v4mapped)
422{
423 ipv6_addr_set(v4mapped,
424 0, 0,
425 htonl(0x0000FFFF),
426 addr);
427}
428
971f359d
YH		 429/*
430 * find the first different bit between two addresses
431 * length of address must be a multiple of 32bits
432 */
433static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
434{
ef296f56 435 const __be32 *a1 = token1, *a2 = token2;
971f359d
YH		 436 int i;
437
438 addrlen >>= 2;
439
440 for (i = 0; i < addrlen; i++) {
ef296f56
AV		 441 __be32 xb = a1[i] ^ a2[i];
442 if (xb)
d57b8fb8 443 return i * 32 + 31 - __fls(ntohl(xb));
971f359d
YH		 444 }
445
446 /*
447 * we should *never* get to this point since that
448 * would mean the addrs are equal
449 *
450 * However, we do get to it 8) And exacly, when
451 * addresses are equal 8)
452 *
453 * ip route add 1111::/128 via ...
454 * ip route add 1111::/64 via ...
455 * and we are here.
456 *
457 * Ideally, this function should stop comparison
458 * at prefix length. It does not, but it is still OK,
459 * if returned value is greater than prefix length.
460 * --ANK (980803)
461 */
a02cec21 462 return addrlen << 5;
971f359d
YH		 463}
464
465static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
466{
467 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
468}
469
87c48fa3 470extern void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);
7ea2f2c5 471
1da177e4
LT		 472/*
473 * Prototypes exported by ipv6
474 */
475
476/*
477 * rcv function (called from netdevice level)
478 */
479
480extern int ipv6_rcv(struct sk_buff *skb,
481 struct net_device *dev,
f2ccd8fa
DM		 482 struct packet_type *pt,
483 struct net_device *orig_dev);
1da177e4 484
b05e1066
PM		 485extern int ip6_rcv_finish(struct sk_buff *skb);
486
1da177e4
LT		 487/*
488 * upper-layer output functions
489 */
490extern int ip6_xmit(struct sock *sk,
491 struct sk_buff *skb,
4c9483b2 492 struct flowi6 *fl6,
b903d324
ED		 493 struct ipv6_txoptions *opt,
494 int tclass);
1da177e4
LT		 495
496extern int ip6_nd_hdr(struct sock *sk,
497 struct sk_buff *skb,
498 struct net_device *dev,
9acd9f3a
YH		 499 const struct in6_addr *saddr,
500 const struct in6_addr *daddr,
1da177e4
LT		 501 int proto, int len);
502
503extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
504
505extern int ip6_append_data(struct sock *sk,
506 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
507 void *from,
508 int length,
509 int transhdrlen,
510 int hlimit,
41a1f8ea 511 int tclass,
1da177e4 512 struct ipv6_txoptions *opt,
4c9483b2 513 struct flowi6 *fl6,
1da177e4 514 struct rt6_info *rt,
13b52cd4
BH		 515 unsigned int flags,
516 int dontfrag);
1da177e4
LT		 517
518extern int ip6_push_pending_frames(struct sock *sk);
519
520extern void ip6_flush_pending_frames(struct sock *sk);
521
522extern int ip6_dst_lookup(struct sock *sk,
523 struct dst_entry **dst,
4c9483b2 524 struct flowi6 *fl6);
68d0c6d3 525extern struct dst_entry * ip6_dst_lookup_flow(struct sock *sk,
4c9483b2 526 struct flowi6 *fl6,
68d0c6d3 527 const struct in6_addr *final_dst,
a1414715 528 bool can_sleep);
68d0c6d3 529extern struct dst_entry * ip6_sk_dst_lookup_flow(struct sock *sk,
4c9483b2 530 struct flowi6 *fl6,
68d0c6d3 531 const struct in6_addr *final_dst,
a1414715 532 bool can_sleep);
2774c131
DM		 533extern struct dst_entry * ip6_blackhole_route(struct net *net,
534 struct dst_entry *orig_dst);
1da177e4
LT		 535
536/*
537 * skb processing functions
538 */
539
540extern int ip6_output(struct sk_buff *skb);
541extern int ip6_forward(struct sk_buff *skb);
542extern int ip6_input(struct sk_buff *skb);
543extern int ip6_mc_input(struct sk_buff *skb);
544
ef76bc23
HX		 545extern int __ip6_local_out(struct sk_buff *skb);
546extern int ip6_local_out(struct sk_buff *skb);
547
1da177e4
LT		 548/*
549 * Extension header (options) processing
550 */
551
1da177e4
LT		 552extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
553 struct ipv6_txoptions *opt,
554 u8 *proto,
555 struct in6_addr **daddr_p);
556extern void ipv6_push_frag_opts(struct sk_buff *skb,
557 struct ipv6_txoptions *opt,
558 u8 *proto);
559
560extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
75f2811c 561 u8 *nexthdrp, __be16 *frag_offp);
1da177e4
LT		 562
563extern int ipv6_ext_hdr(u8 nexthdr);
564
c61a4043
MN		 565extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
566
4c9483b2 567extern struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
20c59de2
AE		 568 const struct ipv6_txoptions *opt,
569 struct in6_addr *orig);
570
1da177e4
LT		 571/*
572 * socket options (ipv6_sockglue.c)
573 */
574
575extern int ipv6_setsockopt(struct sock *sk, int level,
576 int optname,
577 char __user *optval,
b7058842 578 unsigned int optlen);
1da177e4
LT		 579extern int ipv6_getsockopt(struct sock *sk, int level,
580 int optname,
581 char __user *optval,
582 int __user *optlen);
3fdadf7d
DM		 583extern int compat_ipv6_setsockopt(struct sock *sk,
584 int level,
585 int optname,
586 char __user *optval,
b7058842 587 unsigned int optlen);
3fdadf7d
DM		 588extern int compat_ipv6_getsockopt(struct sock *sk,
589 int level,
590 int optname,
591 char __user *optval,
592 int __user *optlen);
1da177e4 593
1da177e4
LT		 594extern int ip6_datagram_connect(struct sock *sk,
595 struct sockaddr *addr, int addr_len);
596
597extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
4b340ae2 598extern int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len);
e69a4adc 599extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
1da177e4 600 u32 info, u8 *payload);
4c9483b2
DM		 601extern void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info);
602extern void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
1da177e4
LT		 603
604extern int inet6_release(struct socket *sock);
605extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
606 int addr_len);
607extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
608 int *uaddr_len, int peer);
609extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
610 unsigned long arg);
611
d8313f5c
ACM		 612extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
613 struct sock *sk);
614
1da177e4
LT		 615/*
616 * reassembly.c
617 */
90ddc4f0
ED		 618extern const struct proto_ops inet6_stream_ops;
619extern const struct proto_ops inet6_dgram_ops;
20380731 620
14c85021
ACM		 621struct group_source_req;
622struct group_filter;
623
20380731
ACM		 624extern int ip6_mc_source(int add, int omode, struct sock *sk,
625 struct group_source_req *pgsr);
626extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
627extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
628 struct group_filter __user *optval,
629 int __user *optlen);
93c8b90f
IJ		 630extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
631 const struct in6_addr *daddr, u32 rnd);
20380731
ACM		 632
633#ifdef CONFIG_PROC_FS
6ab57e7e
DL		 634extern int ac6_proc_init(struct net *net);
635extern void ac6_proc_exit(struct net *net);
20380731
ACM		 636extern int raw6_proc_init(void);
637extern void raw6_proc_exit(void);
6f8b13bc
DL		 638extern int tcp6_proc_init(struct net *net);
639extern void tcp6_proc_exit(struct net *net);
0c96d8c5
DL		 640extern int udp6_proc_init(struct net *net);
641extern void udp6_proc_exit(struct net *net);
ba4e58ec
GR		 642extern int udplite6_proc_init(void);
643extern void udplite6_proc_exit(void);
20380731
ACM		 644extern int ipv6_misc_proc_init(void);
645extern void ipv6_misc_proc_exit(void);
7f7d9a6b
HX		 646extern int snmp6_register_dev(struct inet6_dev *idev);
647extern int snmp6_unregister_dev(struct inet6_dev *idev);
20380731 648
7f7d9a6b 649#else
6ab57e7e
DL		 650static inline int ac6_proc_init(struct net *net) { return 0; }
651static inline void ac6_proc_exit(struct net *net) { }
652static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
653static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
20380731 654#endif
1da177e4 655
20380731 656#ifdef CONFIG_SYSCTL
760f2d01
DL		 657extern ctl_table ipv6_route_table_template[];
658extern ctl_table ipv6_icmp_table_template[];
1da177e4 659
6de1a910
DL		 660extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
661extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
291480c0 662extern int ipv6_sysctl_register(void);
20380731 663extern void ipv6_sysctl_unregister(void);
eeb61f71
AV		 664extern int ipv6_static_sysctl_register(void);
665extern void ipv6_static_sysctl_unregister(void);
20380731 666#endif
1da177e4 667
20380731 668#endif /* _NET_IPV6_H */
kernel source for telekom puls (alcatel/mediatek)