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IPv6: reassembly: replace magic number with macro definitions
[net-next-2.6.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
087fe240 113#define _DEVINC(net, statname, modifier, idev, field) \
14878f75 114({ \
a11d206d
YH		 115 struct inet6_dev *_idev = (idev); \
116 if (likely(_idev != NULL)) \
14878f75 117 SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
9261e537 118 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
a11d206d 119})
14878f75 120
087fe240 121#define _DEVADD(net, statname, modifier, idev, field, val) \
8e7999c4
PE		 122({ \
123 struct inet6_dev *_idev = (idev); \
124 if (likely(_idev != NULL)) \
125 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
9261e537 126 SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
8e7999c4
PE		 127})
128
edf391ff
NH		 129#define _DEVUPD(net, statname, modifier, idev, field, val) \
130({ \
131 struct inet6_dev *_idev = (idev); \
132 if (likely(_idev != NULL)) \
133 SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
134 SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
135})
136
14878f75 137/* MIBs */
14878f75 138
087fe240
DL		 139#define IP6_INC_STATS(net, idev,field) \
140 _DEVINC(net, ipv6, , idev, field)
141#define IP6_INC_STATS_BH(net, idev,field) \
142 _DEVINC(net, ipv6, _BH, idev, field)
edf391ff
NH		 143#define IP6_ADD_STATS(net, idev,field,val) \
144 _DEVADD(net, ipv6, , idev, field, val)
087fe240
DL		 145#define IP6_ADD_STATS_BH(net, idev,field,val) \
146 _DEVADD(net, ipv6, _BH, idev, field, val)
edf391ff
NH		 147#define IP6_UPD_PO_STATS(net, idev,field,val) \
148 _DEVUPD(net, ipv6, , idev, field, val)
149#define IP6_UPD_PO_STATS_BH(net, idev,field,val) \
150 _DEVUPD(net, ipv6, _BH, idev, field, val)
087fe240
DL		 151#define ICMP6_INC_STATS(net, idev, field) \
152 _DEVINC(net, icmpv6, , idev, field)
153#define ICMP6_INC_STATS_BH(net, idev, field) \
154 _DEVINC(net, icmpv6, _BH, idev, field)
155
156#define ICMP6MSGOUT_INC_STATS(net, idev, field) \
157 _DEVINC(net, icmpv6msg, , idev, field +256)
158#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
159 _DEVINC(net, icmpv6msg, _BH, idev, field +256)
160#define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
161 _DEVINC(net, icmpv6msg, _BH, idev, field)
14878f75 162
fd2c3ef7 163struct ip6_ra_chain {
1da177e4
LT		 164 struct ip6_ra_chain *next;
165 struct sock *sk;
166 int sel;
167 void (*destructor)(struct sock *);
168};
169
170extern struct ip6_ra_chain *ip6_ra_chain;
171extern rwlock_t ip6_ra_lock;
172
173/*
174 This structure is prepared by protocol, when parsing
175 ancillary data and passed to IPv6.
176 */
177
fd2c3ef7 178struct ipv6_txoptions {
1da177e4
LT		 179 /* Length of this structure */
180 int tot_len;
181
182 /* length of extension headers */
183
184 __u16 opt_flen; /* after fragment hdr */
185 __u16 opt_nflen; /* before fragment hdr */
186
187 struct ipv6_opt_hdr *hopopt;
188 struct ipv6_opt_hdr *dst0opt;
189 struct ipv6_rt_hdr *srcrt; /* Routing Header */
1da177e4
LT		 190 struct ipv6_opt_hdr *dst1opt;
191
192 /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
193};
194
fd2c3ef7 195struct ip6_flowlabel {
1da177e4 196 struct ip6_flowlabel *next;
90bcaf7b 197 __be32 label;
db3459d1 198 atomic_t users;
1da177e4
LT		 199 struct in6_addr dst;
200 struct ipv6_txoptions *opt;
1da177e4
LT		 201 unsigned long linger;
202 u8 share;
203 u32 owner;
204 unsigned long lastuse;
205 unsigned long expires;
60e8fbc4 206 struct net *fl_net;
1da177e4
LT		 207};
208
f3a7c66b
HH		 209#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
210#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
1da177e4 211
fd2c3ef7 212struct ipv6_fl_socklist {
1da177e4
LT		 213 struct ipv6_fl_socklist *next;
214 struct ip6_flowlabel *fl;
215};
216
90bcaf7b 217extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
1da177e4
LT		 218extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
219 struct ip6_flowlabel * fl,
220 struct ipv6_txoptions * fopt);
221extern void fl6_free_socklist(struct sock *sk);
222extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
0a3e78ac 223extern int ip6_flowlabel_init(void);
1da177e4
LT		 224extern void ip6_flowlabel_cleanup(void);
225
226static inline void fl6_sock_release(struct ip6_flowlabel *fl)
227{
228 if (fl)
229 atomic_dec(&fl->users);
230}
231
725a8ff0 232extern int ip6_ra_control(struct sock *sk, int sel);
1da177e4 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 248
7c070aa9
SW		 249#define IPV6_FRAG_HIGH_THRESH 262144 /* == 256*1024 */
250#define IPV6_FRAG_LOW_THRESH 196608 /* == 192*1024 */
1da177e4
LT		 251#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */
252
b1cacb68
YH		 253extern int __ipv6_addr_type(const struct in6_addr *addr);
254static inline int ipv6_addr_type(const struct in6_addr *addr)
255{
256 return __ipv6_addr_type(addr) & 0xffff;
257}
1da177e4
LT		 258
259static inline int ipv6_addr_scope(const struct in6_addr *addr)
260{
b1cacb68
YH		 261 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
262}
263
264static inline int __ipv6_addr_src_scope(int type)
265{
266 return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
267}
268
269static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
270{
271 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
1da177e4
LT		 272}
273
274static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
275{
db3459d1 276 return memcmp(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 277}
278
f2ffd9ee
PM		 279static inline int
280ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
281 const struct in6_addr *a2)
282{
fed85383
YH		 283 return (!!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
284 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
285 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
286 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])));
f2ffd9ee
PM		 287}
288
1da177e4
LT		 289static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
290{
db3459d1 291 memcpy(a1, a2, sizeof(struct in6_addr));
1da177e4
LT		 292}
293
294static inline void ipv6_addr_prefix(struct in6_addr *pfx,
295 const struct in6_addr *addr,
296 int plen)
297{
298 /* caller must guarantee 0 <= plen <= 128 */
299 int o = plen >> 3,
300 b = plen & 0x7;
301
db3459d1 302 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
1da177e4 303 memcpy(pfx->s6_addr, addr, o);
db3459d1 304 if (b != 0)
1da177e4 305 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
1da177e4
LT		 306}
307
1da177e4 308static inline void ipv6_addr_set(struct in6_addr *addr,
48818f82
AV		 309 __be32 w1, __be32 w2,
310 __be32 w3, __be32 w4)
1da177e4
LT		 311{
312 addr->s6_addr32[0] = w1;
313 addr->s6_addr32[1] = w2;
314 addr->s6_addr32[2] = w3;
315 addr->s6_addr32[3] = w4;
316}
1da177e4
LT		 317
318static inline int ipv6_addr_equal(const struct in6_addr *a1,
319 const struct in6_addr *a2)
320{
fed85383
YH		 321 return (((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
322 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
323 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
324 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0);
1da177e4
LT		 325}
326
48818f82 327static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2,
1da177e4
LT		 328 unsigned int prefixlen)
329{
330 unsigned pdw, pbi;
331
332 /* check complete u32 in prefix */
333 pdw = prefixlen >> 5;
334 if (pdw && memcmp(a1, a2, pdw << 2))
335 return 0;
336
337 /* check incomplete u32 in prefix */
338 pbi = prefixlen & 0x1f;
339 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
340 return 0;
341
342 return 1;
343}
344
345static inline int ipv6_prefix_equal(const struct in6_addr *a1,
346 const struct in6_addr *a2,
347 unsigned int prefixlen)
348{
349 return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32,
350 prefixlen);
351}
352
2588fe1d 353struct inet_frag_queue;
2588fe1d 354
0b5ccb2e
PM		 355enum ip6_defrag_users {
356 IP6_DEFRAG_LOCAL_DELIVER,
357 IP6_DEFRAG_CONNTRACK_IN,
358 IP6_DEFRAG_CONNTRACK_OUT,
8fa9ff68 359 IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
0b5ccb2e
PM		 360};
361
c6fda282
PE		 362struct ip6_create_arg {
363 __be32 id;
0b5ccb2e 364 u32 user;
c6fda282
PE		 365 struct in6_addr *src;
366 struct in6_addr *dst;
367};
368
369void ip6_frag_init(struct inet_frag_queue *q, void *a);
abd6523d 370int ip6_frag_match(struct inet_frag_queue *q, void *a);
c6fda282 371
1da177e4
LT		 372static inline int ipv6_addr_any(const struct in6_addr *a)
373{
374 return ((a->s6_addr32[0] | a->s6_addr32[1] |
375 a->s6_addr32[2] | a->s6_addr32[3] ) == 0);
376}
377
f630e43a
YH		 378static inline int ipv6_addr_loopback(const struct in6_addr *a)
379{
380 return ((a->s6_addr32[0] | a->s6_addr32[1] |
381 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0);
382}
383
e773e4fa
BH		 384static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
385{
fed85383
YH		 386 return ((a->s6_addr32[0] | a->s6_addr32[1] |
387 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0);
e773e4fa
BH		 388}
389
99cd07a5
JMT		 390/*
391 * Check for a RFC 4843 ORCHID address
392 * (Overlay Routable Cryptographic Hash Identifiers)
393 */
394static inline int ipv6_addr_orchid(const struct in6_addr *a)
395{
396 return ((a->s6_addr32[0] & htonl(0xfffffff0))
397 == htonl(0x20010010));
398}
399
f15364bd
AC		 400static inline void ipv6_addr_set_v4mapped(const __be32 addr,
401 struct in6_addr *v4mapped)
402{
403 ipv6_addr_set(v4mapped,
404 0, 0,
405 htonl(0x0000FFFF),
406 addr);
407}
408
971f359d
YH		 409/*
410 * find the first different bit between two addresses
411 * length of address must be a multiple of 32bits
412 */
413static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
414{
ef296f56 415 const __be32 *a1 = token1, *a2 = token2;
971f359d
YH		 416 int i;
417
418 addrlen >>= 2;
419
420 for (i = 0; i < addrlen; i++) {
ef296f56
AV		 421 __be32 xb = a1[i] ^ a2[i];
422 if (xb)
423 return i * 32 + 32 - fls(ntohl(xb));
971f359d
YH		 424 }
425
426 /*
427 * we should *never* get to this point since that
428 * would mean the addrs are equal
429 *
430 * However, we do get to it 8) And exacly, when
431 * addresses are equal 8)
432 *
433 * ip route add 1111::/128 via ...
434 * ip route add 1111::/64 via ...
435 * and we are here.
436 *
437 * Ideally, this function should stop comparison
438 * at prefix length. It does not, but it is still OK,
439 * if returned value is greater than prefix length.
440 * --ANK (980803)
441 */
442 return (addrlen << 5);
443}
444
445static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
446{
447 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
448}
449
7ea2f2c5
SS		 450static __inline__ void ipv6_select_ident(struct frag_hdr *fhdr)
451{
452 static u32 ipv6_fragmentation_id = 1;
453 static DEFINE_SPINLOCK(ip6_id_lock);
454
455 spin_lock_bh(&ip6_id_lock);
456 fhdr->identification = htonl(ipv6_fragmentation_id);
457 if (++ipv6_fragmentation_id == 0)
458 ipv6_fragmentation_id = 1;
459 spin_unlock_bh(&ip6_id_lock);
460}
461
1da177e4
LT		 462/*
463 * Prototypes exported by ipv6
464 */
465
466/*
467 * rcv function (called from netdevice level)
468 */
469
470extern int ipv6_rcv(struct sk_buff *skb,
471 struct net_device *dev,
f2ccd8fa
DM		 472 struct packet_type *pt,
473 struct net_device *orig_dev);
1da177e4 474
b05e1066
PM		 475extern int ip6_rcv_finish(struct sk_buff *skb);
476
1da177e4
LT		 477/*
478 * upper-layer output functions
479 */
480extern int ip6_xmit(struct sock *sk,
481 struct sk_buff *skb,
482 struct flowi *fl,
483 struct ipv6_txoptions *opt,
484 int ipfragok);
485
486extern int ip6_nd_hdr(struct sock *sk,
487 struct sk_buff *skb,
488 struct net_device *dev,
9acd9f3a
YH		 489 const struct in6_addr *saddr,
490 const struct in6_addr *daddr,
1da177e4
LT		 491 int proto, int len);
492
493extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
494
495extern int ip6_append_data(struct sock *sk,
496 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
497 void *from,
498 int length,
499 int transhdrlen,
500 int hlimit,
41a1f8ea 501 int tclass,
1da177e4
LT		 502 struct ipv6_txoptions *opt,
503 struct flowi *fl,
504 struct rt6_info *rt,
505 unsigned int flags);
506
507extern int ip6_push_pending_frames(struct sock *sk);
508
509extern void ip6_flush_pending_frames(struct sock *sk);
510
511extern int ip6_dst_lookup(struct sock *sk,
512 struct dst_entry **dst,
513 struct flowi *fl);
14e50e57
DM		 514extern int ip6_dst_blackhole(struct sock *sk,
515 struct dst_entry **dst,
516 struct flowi *fl);
497c615a
HX		 517extern int ip6_sk_dst_lookup(struct sock *sk,
518 struct dst_entry **dst,
519 struct flowi *fl);
1da177e4
LT		 520
521/*
522 * skb processing functions
523 */
524
525extern int ip6_output(struct sk_buff *skb);
526extern int ip6_forward(struct sk_buff *skb);
527extern int ip6_input(struct sk_buff *skb);
528extern int ip6_mc_input(struct sk_buff *skb);
529
ef76bc23
HX		 530extern int __ip6_local_out(struct sk_buff *skb);
531extern int ip6_local_out(struct sk_buff *skb);
532
1da177e4
LT		 533/*
534 * Extension header (options) processing
535 */
536
1da177e4
LT		 537extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
538 struct ipv6_txoptions *opt,
539 u8 *proto,
540 struct in6_addr **daddr_p);
541extern void ipv6_push_frag_opts(struct sk_buff *skb,
542 struct ipv6_txoptions *opt,
543 u8 *proto);
544
545extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
0d3d077c 546 u8 *nexthdrp);
1da177e4
LT		 547
548extern int ipv6_ext_hdr(u8 nexthdr);
549
c61a4043
MN		 550extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
551
1da177e4
LT		 552/*
553 * socket options (ipv6_sockglue.c)
554 */
555
556extern int ipv6_setsockopt(struct sock *sk, int level,
557 int optname,
558 char __user *optval,
b7058842 559 unsigned int optlen);
1da177e4
LT		 560extern int ipv6_getsockopt(struct sock *sk, int level,
561 int optname,
562 char __user *optval,
563 int __user *optlen);
3fdadf7d
DM		 564extern int compat_ipv6_setsockopt(struct sock *sk,
565 int level,
566 int optname,
567 char __user *optval,
b7058842 568 unsigned int optlen);
3fdadf7d
DM		 569extern int compat_ipv6_getsockopt(struct sock *sk,
570 int level,
571 int optname,
572 char __user *optval,
573 int __user *optlen);
1da177e4 574
1da177e4
LT		 575extern int ip6_datagram_connect(struct sock *sk,
576 struct sockaddr *addr, int addr_len);
577
578extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
e69a4adc 579extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
1da177e4
LT		 580 u32 info, u8 *payload);
581extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info);
582
583extern int inet6_release(struct socket *sock);
584extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
585 int addr_len);
586extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
587 int *uaddr_len, int peer);
588extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
589 unsigned long arg);
590
d8313f5c
ACM		 591extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
592 struct sock *sk);
593
1da177e4
LT		 594/*
595 * reassembly.c
596 */
90ddc4f0
ED		 597extern const struct proto_ops inet6_stream_ops;
598extern const struct proto_ops inet6_dgram_ops;
20380731 599
14c85021
ACM		 600struct group_source_req;
601struct group_filter;
602
20380731
ACM		 603extern int ip6_mc_source(int add, int omode, struct sock *sk,
604 struct group_source_req *pgsr);
605extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
606extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
607 struct group_filter __user *optval,
608 int __user *optlen);
93c8b90f
IJ		 609extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
610 const struct in6_addr *daddr, u32 rnd);
20380731
ACM		 611
612#ifdef CONFIG_PROC_FS
6ab57e7e
DL		 613extern int ac6_proc_init(struct net *net);
614extern void ac6_proc_exit(struct net *net);
20380731
ACM		 615extern int raw6_proc_init(void);
616extern void raw6_proc_exit(void);
6f8b13bc
DL		 617extern int tcp6_proc_init(struct net *net);
618extern void tcp6_proc_exit(struct net *net);
0c96d8c5
DL		 619extern int udp6_proc_init(struct net *net);
620extern void udp6_proc_exit(struct net *net);
ba4e58ec
GR		 621extern int udplite6_proc_init(void);
622extern void udplite6_proc_exit(void);
20380731
ACM		 623extern int ipv6_misc_proc_init(void);
624extern void ipv6_misc_proc_exit(void);
7f7d9a6b
HX		 625extern int snmp6_register_dev(struct inet6_dev *idev);
626extern int snmp6_unregister_dev(struct inet6_dev *idev);
20380731 627
7f7d9a6b 628#else
6ab57e7e
DL		 629static inline int ac6_proc_init(struct net *net) { return 0; }
630static inline void ac6_proc_exit(struct net *net) { }
631static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
632static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
20380731 633#endif
1da177e4 634
20380731 635#ifdef CONFIG_SYSCTL
760f2d01
DL		 636extern ctl_table ipv6_route_table_template[];
637extern ctl_table ipv6_icmp_table_template[];
1da177e4 638
6de1a910
DL		 639extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
640extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
291480c0 641extern int ipv6_sysctl_register(void);
20380731 642extern void ipv6_sysctl_unregister(void);
eeb61f71
AV		 643extern int ipv6_static_sysctl_register(void);
644extern void ipv6_static_sysctl_unregister(void);
20380731 645#endif
1da177e4 646
20380731
ACM		 647#endif /* __KERNEL__ */
648#endif /* _NET_IPV6_H */
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