Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Linux INET6 implementation | |
3 | * | |
4 | * Authors: | |
5 | * Pedro Roque <roque@di.fc.ul.pt> | |
6 | * | |
7 | * $Id: ipv6.h,v 1.1 2002/05/20 15:13:07 jgrimm Exp $ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * as published by the Free Software Foundation; either version | |
12 | * 2 of the License, or (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #ifndef _NET_IPV6_H | |
16 | #define _NET_IPV6_H | |
17 | ||
18 | #include <linux/ipv6.h> | |
19 | #include <linux/hardirq.h> | |
20283d84 | 20 | #include <net/if_inet6.h> |
1da177e4 LT |
21 | #include <net/ndisc.h> |
22 | #include <net/flow.h> | |
23 | #include <net/snmp.h> | |
24 | ||
25 | #define SIN6_LEN_RFC2133 24 | |
26 | ||
27 | #define IPV6_MAXPLEN 65535 | |
28 | ||
29 | /* | |
30 | * NextHeader field of IPv6 header | |
31 | */ | |
32 | ||
33 | #define NEXTHDR_HOP 0 /* Hop-by-hop option header. */ | |
34 | #define NEXTHDR_TCP 6 /* TCP segment. */ | |
35 | #define NEXTHDR_UDP 17 /* UDP message. */ | |
36 | #define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */ | |
37 | #define NEXTHDR_ROUTING 43 /* Routing header. */ | |
38 | #define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */ | |
39 | #define NEXTHDR_ESP 50 /* Encapsulating security payload. */ | |
40 | #define NEXTHDR_AUTH 51 /* Authentication header. */ | |
41 | #define NEXTHDR_ICMP 58 /* ICMP for IPv6. */ | |
42 | #define NEXTHDR_NONE 59 /* No next header */ | |
43 | #define NEXTHDR_DEST 60 /* Destination options header. */ | |
2b741653 | 44 | #define NEXTHDR_MOBILITY 135 /* Mobility header. */ |
1da177e4 LT |
45 | |
46 | #define NEXTHDR_MAX 255 | |
47 | ||
48 | ||
49 | ||
50 | #define IPV6_DEFAULT_HOPLIMIT 64 | |
51 | #define IPV6_DEFAULT_MCASTHOPS 1 | |
52 | ||
53 | /* | |
54 | * Addr type | |
55 | * | |
56 | * type - unicast | multicast | |
57 | * scope - local | site | global | |
58 | * v4 - compat | |
59 | * v4mapped | |
60 | * any | |
61 | * loopback | |
62 | */ | |
63 | ||
64 | #define IPV6_ADDR_ANY 0x0000U | |
65 | ||
66 | #define IPV6_ADDR_UNICAST 0x0001U | |
67 | #define IPV6_ADDR_MULTICAST 0x0002U | |
68 | ||
69 | #define IPV6_ADDR_LOOPBACK 0x0010U | |
70 | #define IPV6_ADDR_LINKLOCAL 0x0020U | |
71 | #define IPV6_ADDR_SITELOCAL 0x0040U | |
72 | ||
73 | #define IPV6_ADDR_COMPATv4 0x0080U | |
74 | ||
75 | #define IPV6_ADDR_SCOPE_MASK 0x00f0U | |
76 | ||
77 | #define IPV6_ADDR_MAPPED 0x1000U | |
78 | #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ | |
79 | ||
80 | /* | |
81 | * Addr scopes | |
82 | */ | |
83 | #ifdef __KERNEL__ | |
84 | #define IPV6_ADDR_MC_SCOPE(a) \ | |
85 | ((a)->s6_addr[1] & 0x0f) /* nonstandard */ | |
86 | #define __IPV6_ADDR_SCOPE_INVALID -1 | |
87 | #endif | |
88 | #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 | |
89 | #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 | |
90 | #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 | |
91 | #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 | |
92 | #define IPV6_ADDR_SCOPE_GLOBAL 0x0e | |
93 | ||
94 | /* | |
95 | * fragmentation header | |
96 | */ | |
97 | ||
98 | struct frag_hdr { | |
44473a6b AV |
99 | __u8 nexthdr; |
100 | __u8 reserved; | |
101 | __be16 frag_off; | |
102 | __be32 identification; | |
1da177e4 LT |
103 | }; |
104 | ||
105 | #define IP6_MF 0x0001 | |
106 | ||
107 | #ifdef __KERNEL__ | |
108 | ||
109 | #include <net/sock.h> | |
110 | ||
111 | /* sysctls */ | |
1da177e4 | 112 | extern int sysctl_mld_max_msf; |
3d7cc2ba PE |
113 | extern struct ctl_path net_ipv6_ctl_path[]; |
114 | ||
14878f75 DS |
115 | #define _DEVINC(statname, modifier, idev, field) \ |
116 | ({ \ | |
a11d206d YH |
117 | struct inet6_dev *_idev = (idev); \ |
118 | if (likely(_idev != NULL)) \ | |
14878f75 DS |
119 | SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \ |
120 | SNMP_INC_STATS##modifier(statname##_statistics, (field)); \ | |
a11d206d | 121 | }) |
14878f75 | 122 | |
8e7999c4 PE |
123 | #define _DEVADD(statname, modifier, idev, field, val) \ |
124 | ({ \ | |
125 | struct inet6_dev *_idev = (idev); \ | |
126 | if (likely(_idev != NULL)) \ | |
127 | SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \ | |
128 | SNMP_ADD_STATS##modifier(statname##_statistics, (field), (val));\ | |
129 | }) | |
130 | ||
14878f75 DS |
131 | /* MIBs */ |
132 | DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics); | |
133 | ||
134 | #define IP6_INC_STATS(idev,field) _DEVINC(ipv6, , idev, field) | |
135 | #define IP6_INC_STATS_BH(idev,field) _DEVINC(ipv6, _BH, idev, field) | |
136 | #define IP6_INC_STATS_USER(idev,field) _DEVINC(ipv6, _USER, idev, field) | |
8e7999c4 | 137 | #define IP6_ADD_STATS_BH(idev,field,val) _DEVADD(ipv6, _BH, idev, field, val) |
14878f75 | 138 | |
1da177e4 | 139 | DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics); |
14878f75 DS |
140 | DECLARE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg_statistics); |
141 | ||
142 | #define ICMP6_INC_STATS(idev, field) _DEVINC(icmpv6, , idev, field) | |
143 | #define ICMP6_INC_STATS_BH(idev, field) _DEVINC(icmpv6, _BH, idev, field) | |
144 | #define ICMP6_INC_STATS_USER(idev, field) _DEVINC(icmpv6, _USER, idev, field) | |
145 | ||
14878f75 DS |
146 | #define ICMP6MSGOUT_INC_STATS(idev, field) \ |
147 | _DEVINC(icmpv6msg, , idev, field +256) | |
148 | #define ICMP6MSGOUT_INC_STATS_BH(idev, field) \ | |
149 | _DEVINC(icmpv6msg, _BH, idev, field +256) | |
150 | #define ICMP6MSGOUT_INC_STATS_USER(idev, field) \ | |
151 | _DEVINC(icmpv6msg, _USER, idev, field +256) | |
152 | #define ICMP6MSGIN_INC_STATS(idev, field) \ | |
153 | _DEVINC(icmpv6msg, , idev, field) | |
154 | #define ICMP6MSGIN_INC_STATS_BH(idev, field) \ | |
155 | _DEVINC(icmpv6msg, _BH, idev, field) | |
156 | #define ICMP6MSGIN_INC_STATS_USER(idev, field) \ | |
157 | _DEVINC(icmpv6msg, _USER, idev, field) | |
158 | ||
1da177e4 LT |
159 | struct ip6_ra_chain |
160 | { | |
161 | struct ip6_ra_chain *next; | |
162 | struct sock *sk; | |
163 | int sel; | |
164 | void (*destructor)(struct sock *); | |
165 | }; | |
166 | ||
167 | extern struct ip6_ra_chain *ip6_ra_chain; | |
168 | extern rwlock_t ip6_ra_lock; | |
169 | ||
170 | /* | |
171 | This structure is prepared by protocol, when parsing | |
172 | ancillary data and passed to IPv6. | |
173 | */ | |
174 | ||
175 | struct ipv6_txoptions | |
176 | { | |
177 | /* Length of this structure */ | |
178 | int tot_len; | |
179 | ||
180 | /* length of extension headers */ | |
181 | ||
182 | __u16 opt_flen; /* after fragment hdr */ | |
183 | __u16 opt_nflen; /* before fragment hdr */ | |
184 | ||
185 | struct ipv6_opt_hdr *hopopt; | |
186 | struct ipv6_opt_hdr *dst0opt; | |
187 | struct ipv6_rt_hdr *srcrt; /* Routing Header */ | |
1da177e4 LT |
188 | struct ipv6_opt_hdr *dst1opt; |
189 | ||
190 | /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ | |
191 | }; | |
192 | ||
193 | struct ip6_flowlabel | |
194 | { | |
195 | struct ip6_flowlabel *next; | |
90bcaf7b | 196 | __be32 label; |
db3459d1 | 197 | atomic_t users; |
1da177e4 LT |
198 | struct in6_addr dst; |
199 | struct ipv6_txoptions *opt; | |
1da177e4 LT |
200 | unsigned long linger; |
201 | u8 share; | |
202 | u32 owner; | |
203 | unsigned long lastuse; | |
204 | unsigned long expires; | |
205 | }; | |
206 | ||
207 | #define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF) | |
208 | #define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF) | |
209 | ||
210 | struct ipv6_fl_socklist | |
211 | { | |
212 | struct ipv6_fl_socklist *next; | |
213 | struct ip6_flowlabel *fl; | |
214 | }; | |
215 | ||
90bcaf7b | 216 | extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); |
1da177e4 LT |
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); | |
0a3e78ac | 222 | extern int ip6_flowlabel_init(void); |
1da177e4 LT |
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 | void (*destructor)(struct sock *)); | |
233 | ||
234 | ||
e5bbef20 | 235 | extern int ipv6_parse_hopopts(struct sk_buff *skb); |
1da177e4 LT |
236 | |
237 | extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt); | |
333fad53 YH |
238 | extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt, |
239 | int newtype, | |
240 | struct ipv6_opt_hdr __user *newopt, | |
241 | int newoptlen); | |
df9890c3 YH |
242 | struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, |
243 | struct ipv6_txoptions *opt); | |
1da177e4 | 244 | |
399c07de ACM |
245 | extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb); |
246 | ||
e5a2bb84 | 247 | int ip6_frag_nqueues(struct net *net); |
6ddc0822 | 248 | int ip6_frag_mem(struct net *net); |
1da177e4 LT |
249 | |
250 | #define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */ | |
251 | ||
252 | /* | |
253 | * Function prototype for build_xmit | |
254 | */ | |
255 | ||
256 | typedef int (*inet_getfrag_t) (const void *data, | |
257 | struct in6_addr *addr, | |
258 | char *, | |
259 | unsigned int, unsigned int); | |
260 | ||
b1cacb68 YH |
261 | extern int __ipv6_addr_type(const struct in6_addr *addr); |
262 | static inline int ipv6_addr_type(const struct in6_addr *addr) | |
263 | { | |
264 | return __ipv6_addr_type(addr) & 0xffff; | |
265 | } | |
1da177e4 LT |
266 | |
267 | static inline int ipv6_addr_scope(const struct in6_addr *addr) | |
268 | { | |
b1cacb68 YH |
269 | return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK; |
270 | } | |
271 | ||
272 | static inline int __ipv6_addr_src_scope(int type) | |
273 | { | |
274 | return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16)); | |
275 | } | |
276 | ||
277 | static inline int ipv6_addr_src_scope(const struct in6_addr *addr) | |
278 | { | |
279 | return __ipv6_addr_src_scope(__ipv6_addr_type(addr)); | |
1da177e4 LT |
280 | } |
281 | ||
282 | static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2) | |
283 | { | |
db3459d1 | 284 | return memcmp(a1, a2, sizeof(struct in6_addr)); |
1da177e4 LT |
285 | } |
286 | ||
f2ffd9ee PM |
287 | static inline int |
288 | ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, | |
289 | const struct in6_addr *a2) | |
290 | { | |
291 | unsigned int i; | |
292 | ||
293 | for (i = 0; i < 4; i++) | |
294 | if ((a1->s6_addr32[i] ^ a2->s6_addr32[i]) & m->s6_addr32[i]) | |
295 | return 1; | |
296 | return 0; | |
297 | } | |
298 | ||
1da177e4 LT |
299 | static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2) |
300 | { | |
db3459d1 | 301 | memcpy(a1, a2, sizeof(struct in6_addr)); |
1da177e4 LT |
302 | } |
303 | ||
304 | static inline void ipv6_addr_prefix(struct in6_addr *pfx, | |
305 | const struct in6_addr *addr, | |
306 | int plen) | |
307 | { | |
308 | /* caller must guarantee 0 <= plen <= 128 */ | |
309 | int o = plen >> 3, | |
310 | b = plen & 0x7; | |
311 | ||
db3459d1 | 312 | memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr)); |
1da177e4 | 313 | memcpy(pfx->s6_addr, addr, o); |
db3459d1 | 314 | if (b != 0) |
1da177e4 | 315 | pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); |
1da177e4 LT |
316 | } |
317 | ||
1da177e4 | 318 | static inline void ipv6_addr_set(struct in6_addr *addr, |
48818f82 AV |
319 | __be32 w1, __be32 w2, |
320 | __be32 w3, __be32 w4) | |
1da177e4 LT |
321 | { |
322 | addr->s6_addr32[0] = w1; | |
323 | addr->s6_addr32[1] = w2; | |
324 | addr->s6_addr32[2] = w3; | |
325 | addr->s6_addr32[3] = w4; | |
326 | } | |
1da177e4 LT |
327 | |
328 | static inline int ipv6_addr_equal(const struct in6_addr *a1, | |
329 | const struct in6_addr *a2) | |
330 | { | |
331 | return (a1->s6_addr32[0] == a2->s6_addr32[0] && | |
332 | a1->s6_addr32[1] == a2->s6_addr32[1] && | |
333 | a1->s6_addr32[2] == a2->s6_addr32[2] && | |
334 | a1->s6_addr32[3] == a2->s6_addr32[3]); | |
335 | } | |
336 | ||
48818f82 | 337 | static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2, |
1da177e4 LT |
338 | unsigned int prefixlen) |
339 | { | |
340 | unsigned pdw, pbi; | |
341 | ||
342 | /* check complete u32 in prefix */ | |
343 | pdw = prefixlen >> 5; | |
344 | if (pdw && memcmp(a1, a2, pdw << 2)) | |
345 | return 0; | |
346 | ||
347 | /* check incomplete u32 in prefix */ | |
348 | pbi = prefixlen & 0x1f; | |
349 | if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi)))) | |
350 | return 0; | |
351 | ||
352 | return 1; | |
353 | } | |
354 | ||
355 | static inline int ipv6_prefix_equal(const struct in6_addr *a1, | |
356 | const struct in6_addr *a2, | |
357 | unsigned int prefixlen) | |
358 | { | |
359 | return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32, | |
360 | prefixlen); | |
361 | } | |
362 | ||
2588fe1d | 363 | struct inet_frag_queue; |
2588fe1d | 364 | |
c6fda282 PE |
365 | struct ip6_create_arg { |
366 | __be32 id; | |
367 | struct in6_addr *src; | |
368 | struct in6_addr *dst; | |
369 | }; | |
370 | ||
371 | void ip6_frag_init(struct inet_frag_queue *q, void *a); | |
abd6523d | 372 | int ip6_frag_match(struct inet_frag_queue *q, void *a); |
c6fda282 | 373 | |
1da177e4 LT |
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 | ||
e773e4fa BH |
380 | static inline int ipv6_addr_v4mapped(const struct in6_addr *a) |
381 | { | |
382 | return ((a->s6_addr32[0] | a->s6_addr32[1]) == 0 && | |
383 | a->s6_addr32[2] == htonl(0x0000ffff)); | |
384 | } | |
385 | ||
99cd07a5 JMT |
386 | /* |
387 | * Check for a RFC 4843 ORCHID address | |
388 | * (Overlay Routable Cryptographic Hash Identifiers) | |
389 | */ | |
390 | static inline int ipv6_addr_orchid(const struct in6_addr *a) | |
391 | { | |
392 | return ((a->s6_addr32[0] & htonl(0xfffffff0)) | |
393 | == htonl(0x20010010)); | |
394 | } | |
395 | ||
971f359d YH |
396 | /* |
397 | * find the first different bit between two addresses | |
398 | * length of address must be a multiple of 32bits | |
399 | */ | |
400 | static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen) | |
401 | { | |
ef296f56 | 402 | const __be32 *a1 = token1, *a2 = token2; |
971f359d YH |
403 | int i; |
404 | ||
405 | addrlen >>= 2; | |
406 | ||
407 | for (i = 0; i < addrlen; i++) { | |
ef296f56 AV |
408 | __be32 xb = a1[i] ^ a2[i]; |
409 | if (xb) | |
410 | return i * 32 + 32 - fls(ntohl(xb)); | |
971f359d YH |
411 | } |
412 | ||
413 | /* | |
414 | * we should *never* get to this point since that | |
415 | * would mean the addrs are equal | |
416 | * | |
417 | * However, we do get to it 8) And exacly, when | |
418 | * addresses are equal 8) | |
419 | * | |
420 | * ip route add 1111::/128 via ... | |
421 | * ip route add 1111::/64 via ... | |
422 | * and we are here. | |
423 | * | |
424 | * Ideally, this function should stop comparison | |
425 | * at prefix length. It does not, but it is still OK, | |
426 | * if returned value is greater than prefix length. | |
427 | * --ANK (980803) | |
428 | */ | |
429 | return (addrlen << 5); | |
430 | } | |
431 | ||
432 | static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2) | |
433 | { | |
434 | return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); | |
435 | } | |
436 | ||
1da177e4 LT |
437 | /* |
438 | * Prototypes exported by ipv6 | |
439 | */ | |
440 | ||
441 | /* | |
442 | * rcv function (called from netdevice level) | |
443 | */ | |
444 | ||
445 | extern int ipv6_rcv(struct sk_buff *skb, | |
446 | struct net_device *dev, | |
f2ccd8fa DM |
447 | struct packet_type *pt, |
448 | struct net_device *orig_dev); | |
1da177e4 | 449 | |
b05e1066 PM |
450 | extern int ip6_rcv_finish(struct sk_buff *skb); |
451 | ||
1da177e4 LT |
452 | /* |
453 | * upper-layer output functions | |
454 | */ | |
455 | extern int ip6_xmit(struct sock *sk, | |
456 | struct sk_buff *skb, | |
457 | struct flowi *fl, | |
458 | struct ipv6_txoptions *opt, | |
459 | int ipfragok); | |
460 | ||
461 | extern int ip6_nd_hdr(struct sock *sk, | |
462 | struct sk_buff *skb, | |
463 | struct net_device *dev, | |
464 | struct in6_addr *saddr, | |
465 | struct in6_addr *daddr, | |
466 | int proto, int len); | |
467 | ||
468 | extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr); | |
469 | ||
470 | extern int ip6_append_data(struct sock *sk, | |
471 | int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), | |
472 | void *from, | |
473 | int length, | |
474 | int transhdrlen, | |
475 | int hlimit, | |
41a1f8ea | 476 | int tclass, |
1da177e4 LT |
477 | struct ipv6_txoptions *opt, |
478 | struct flowi *fl, | |
479 | struct rt6_info *rt, | |
480 | unsigned int flags); | |
481 | ||
482 | extern int ip6_push_pending_frames(struct sock *sk); | |
483 | ||
484 | extern void ip6_flush_pending_frames(struct sock *sk); | |
485 | ||
486 | extern int ip6_dst_lookup(struct sock *sk, | |
487 | struct dst_entry **dst, | |
488 | struct flowi *fl); | |
14e50e57 DM |
489 | extern int ip6_dst_blackhole(struct sock *sk, |
490 | struct dst_entry **dst, | |
491 | struct flowi *fl); | |
497c615a HX |
492 | extern int ip6_sk_dst_lookup(struct sock *sk, |
493 | struct dst_entry **dst, | |
494 | struct flowi *fl); | |
1da177e4 LT |
495 | |
496 | /* | |
497 | * skb processing functions | |
498 | */ | |
499 | ||
500 | extern int ip6_output(struct sk_buff *skb); | |
501 | extern int ip6_forward(struct sk_buff *skb); | |
502 | extern int ip6_input(struct sk_buff *skb); | |
503 | extern int ip6_mc_input(struct sk_buff *skb); | |
504 | ||
ef76bc23 HX |
505 | extern int __ip6_local_out(struct sk_buff *skb); |
506 | extern int ip6_local_out(struct sk_buff *skb); | |
507 | ||
1da177e4 LT |
508 | /* |
509 | * Extension header (options) processing | |
510 | */ | |
511 | ||
512 | extern u8 * ipv6_build_nfrag_opts(struct sk_buff *skb, | |
513 | u8 *prev_hdr, | |
514 | struct ipv6_txoptions *opt, | |
515 | struct in6_addr *daddr, | |
516 | u32 jumbolen); | |
517 | extern u8 * ipv6_build_frag_opts(struct sk_buff *skb, | |
518 | u8 *prev_hdr, | |
519 | struct ipv6_txoptions *opt); | |
520 | extern void ipv6_push_nfrag_opts(struct sk_buff *skb, | |
521 | struct ipv6_txoptions *opt, | |
522 | u8 *proto, | |
523 | struct in6_addr **daddr_p); | |
524 | extern void ipv6_push_frag_opts(struct sk_buff *skb, | |
525 | struct ipv6_txoptions *opt, | |
526 | u8 *proto); | |
527 | ||
528 | extern int ipv6_skip_exthdr(const struct sk_buff *, int start, | |
0d3d077c | 529 | u8 *nexthdrp); |
1da177e4 LT |
530 | |
531 | extern int ipv6_ext_hdr(u8 nexthdr); | |
532 | ||
c61a4043 MN |
533 | extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type); |
534 | ||
1da177e4 LT |
535 | /* |
536 | * socket options (ipv6_sockglue.c) | |
537 | */ | |
538 | ||
539 | extern int ipv6_setsockopt(struct sock *sk, int level, | |
540 | int optname, | |
541 | char __user *optval, | |
542 | int optlen); | |
543 | extern int ipv6_getsockopt(struct sock *sk, int level, | |
544 | int optname, | |
545 | char __user *optval, | |
546 | int __user *optlen); | |
3fdadf7d DM |
547 | extern int compat_ipv6_setsockopt(struct sock *sk, |
548 | int level, | |
549 | int optname, | |
550 | char __user *optval, | |
551 | int optlen); | |
552 | extern int compat_ipv6_getsockopt(struct sock *sk, | |
553 | int level, | |
554 | int optname, | |
555 | char __user *optval, | |
556 | int __user *optlen); | |
1da177e4 | 557 | |
1da177e4 LT |
558 | extern int ip6_datagram_connect(struct sock *sk, |
559 | struct sockaddr *addr, int addr_len); | |
560 | ||
561 | extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len); | |
e69a4adc | 562 | extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port, |
1da177e4 LT |
563 | u32 info, u8 *payload); |
564 | extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info); | |
565 | ||
566 | extern int inet6_release(struct socket *sock); | |
567 | extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, | |
568 | int addr_len); | |
569 | extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr, | |
570 | int *uaddr_len, int peer); | |
571 | extern int inet6_ioctl(struct socket *sock, unsigned int cmd, | |
572 | unsigned long arg); | |
573 | ||
d8313f5c ACM |
574 | extern int inet6_hash_connect(struct inet_timewait_death_row *death_row, |
575 | struct sock *sk); | |
576 | ||
1da177e4 LT |
577 | /* |
578 | * reassembly.c | |
579 | */ | |
90ddc4f0 ED |
580 | extern const struct proto_ops inet6_stream_ops; |
581 | extern const struct proto_ops inet6_dgram_ops; | |
20380731 | 582 | |
14c85021 ACM |
583 | struct group_source_req; |
584 | struct group_filter; | |
585 | ||
20380731 ACM |
586 | extern int ip6_mc_source(int add, int omode, struct sock *sk, |
587 | struct group_source_req *pgsr); | |
588 | extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf); | |
589 | extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf, | |
590 | struct group_filter __user *optval, | |
591 | int __user *optlen); | |
592 | ||
593 | #ifdef CONFIG_PROC_FS | |
594 | extern int ac6_proc_init(void); | |
595 | extern void ac6_proc_exit(void); | |
596 | extern int raw6_proc_init(void); | |
597 | extern void raw6_proc_exit(void); | |
598 | extern int tcp6_proc_init(void); | |
599 | extern void tcp6_proc_exit(void); | |
600 | extern int udp6_proc_init(void); | |
601 | extern void udp6_proc_exit(void); | |
ba4e58ec GR |
602 | extern int udplite6_proc_init(void); |
603 | extern void udplite6_proc_exit(void); | |
20380731 ACM |
604 | extern int ipv6_misc_proc_init(void); |
605 | extern void ipv6_misc_proc_exit(void); | |
7f7d9a6b HX |
606 | extern int snmp6_register_dev(struct inet6_dev *idev); |
607 | extern int snmp6_unregister_dev(struct inet6_dev *idev); | |
20380731 | 608 | |
7f7d9a6b HX |
609 | #else |
610 | static inline int snmp6_register_dev(struct inet6_dev *idev) | |
611 | { | |
612 | return 0; | |
613 | } | |
614 | ||
615 | static inline int snmp6_unregister_dev(struct inet6_dev *idev) | |
616 | { | |
617 | return 0; | |
618 | } | |
20380731 | 619 | #endif |
1da177e4 | 620 | |
20380731 | 621 | #ifdef CONFIG_SYSCTL |
760f2d01 DL |
622 | extern ctl_table ipv6_route_table_template[]; |
623 | extern ctl_table ipv6_icmp_table_template[]; | |
1da177e4 | 624 | |
6de1a910 DL |
625 | extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net); |
626 | extern struct ctl_table *ipv6_route_sysctl_init(struct net *net); | |
291480c0 | 627 | extern int ipv6_sysctl_register(void); |
20380731 ACM |
628 | extern void ipv6_sysctl_unregister(void); |
629 | #endif | |
1da177e4 | 630 | |
20380731 ACM |
631 | #endif /* __KERNEL__ */ |
632 | #endif /* _NET_IPV6_H */ |