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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> | |
20 | #include <net/ndisc.h> | |
21 | #include <net/flow.h> | |
22 | #include <net/snmp.h> | |
23 | ||
24 | #define SIN6_LEN_RFC2133 24 | |
25 | ||
26 | #define IPV6_MAXPLEN 65535 | |
27 | ||
28 | /* | |
29 | * NextHeader field of IPv6 header | |
30 | */ | |
31 | ||
32 | #define NEXTHDR_HOP 0 /* Hop-by-hop option header. */ | |
33 | #define NEXTHDR_TCP 6 /* TCP segment. */ | |
34 | #define NEXTHDR_UDP 17 /* UDP message. */ | |
35 | #define NEXTHDR_IPV6 41 /* IPv6 in IPv6 */ | |
36 | #define NEXTHDR_ROUTING 43 /* Routing header. */ | |
37 | #define NEXTHDR_FRAGMENT 44 /* Fragmentation/reassembly header. */ | |
38 | #define NEXTHDR_ESP 50 /* Encapsulating security payload. */ | |
39 | #define NEXTHDR_AUTH 51 /* Authentication header. */ | |
40 | #define NEXTHDR_ICMP 58 /* ICMP for IPv6. */ | |
41 | #define NEXTHDR_NONE 59 /* No next header */ | |
42 | #define NEXTHDR_DEST 60 /* Destination options header. */ | |
2b741653 | 43 | #define NEXTHDR_MOBILITY 135 /* Mobility header. */ |
1da177e4 LT |
44 | |
45 | #define NEXTHDR_MAX 255 | |
46 | ||
47 | ||
48 | ||
49 | #define IPV6_DEFAULT_HOPLIMIT 64 | |
50 | #define IPV6_DEFAULT_MCASTHOPS 1 | |
51 | ||
52 | /* | |
53 | * Addr type | |
54 | * | |
55 | * type - unicast | multicast | |
56 | * scope - local | site | global | |
57 | * v4 - compat | |
58 | * v4mapped | |
59 | * any | |
60 | * loopback | |
61 | */ | |
62 | ||
63 | #define IPV6_ADDR_ANY 0x0000U | |
64 | ||
65 | #define IPV6_ADDR_UNICAST 0x0001U | |
66 | #define IPV6_ADDR_MULTICAST 0x0002U | |
67 | ||
68 | #define IPV6_ADDR_LOOPBACK 0x0010U | |
69 | #define IPV6_ADDR_LINKLOCAL 0x0020U | |
70 | #define IPV6_ADDR_SITELOCAL 0x0040U | |
71 | ||
72 | #define IPV6_ADDR_COMPATv4 0x0080U | |
73 | ||
74 | #define IPV6_ADDR_SCOPE_MASK 0x00f0U | |
75 | ||
76 | #define IPV6_ADDR_MAPPED 0x1000U | |
77 | #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ | |
78 | ||
79 | /* | |
80 | * Addr scopes | |
81 | */ | |
82 | #ifdef __KERNEL__ | |
83 | #define IPV6_ADDR_MC_SCOPE(a) \ | |
84 | ((a)->s6_addr[1] & 0x0f) /* nonstandard */ | |
85 | #define __IPV6_ADDR_SCOPE_INVALID -1 | |
86 | #endif | |
87 | #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 | |
88 | #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 | |
89 | #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 | |
90 | #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 | |
91 | #define IPV6_ADDR_SCOPE_GLOBAL 0x0e | |
92 | ||
93 | /* | |
94 | * fragmentation header | |
95 | */ | |
96 | ||
97 | struct frag_hdr { | |
44473a6b AV |
98 | __u8 nexthdr; |
99 | __u8 reserved; | |
100 | __be16 frag_off; | |
101 | __be32 identification; | |
1da177e4 LT |
102 | }; |
103 | ||
104 | #define IP6_MF 0x0001 | |
105 | ||
106 | #ifdef __KERNEL__ | |
107 | ||
108 | #include <net/sock.h> | |
109 | ||
110 | /* sysctls */ | |
111 | extern int sysctl_ipv6_bindv6only; | |
112 | extern int sysctl_mld_max_msf; | |
113 | ||
114 | /* MIBs */ | |
115 | DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics); | |
a11d206d YH |
116 | #define IP6_INC_STATS(idev,field) ({ \ |
117 | struct inet6_dev *_idev = (idev); \ | |
118 | if (likely(_idev != NULL)) \ | |
119 | SNMP_INC_STATS(_idev->stats.ipv6, field); \ | |
120 | SNMP_INC_STATS(ipv6_statistics, field); \ | |
121 | }) | |
122 | #define IP6_INC_STATS_BH(idev,field) ({ \ | |
123 | struct inet6_dev *_idev = (idev); \ | |
124 | if (likely(_idev != NULL)) \ | |
125 | SNMP_INC_STATS_BH(_idev->stats.ipv6, field); \ | |
126 | SNMP_INC_STATS_BH(ipv6_statistics, field); \ | |
127 | }) | |
128 | #define IP6_INC_STATS_USER(idev,field) ({ \ | |
129 | struct inet6_dev *_idev = (idev); \ | |
130 | if (likely(_idev != NULL)) \ | |
131 | SNMP_INC_STATS_USER(_idev->stats.ipv6, field); \ | |
132 | SNMP_INC_STATS_USER(ipv6_statistics, field); \ | |
133 | }) | |
1da177e4 LT |
134 | DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics); |
135 | #define ICMP6_INC_STATS(idev, field) ({ \ | |
136 | struct inet6_dev *_idev = (idev); \ | |
137 | if (likely(_idev != NULL)) \ | |
138 | SNMP_INC_STATS(idev->stats.icmpv6, field); \ | |
139 | SNMP_INC_STATS(icmpv6_statistics, field); \ | |
140 | }) | |
141 | #define ICMP6_INC_STATS_BH(idev, field) ({ \ | |
142 | struct inet6_dev *_idev = (idev); \ | |
143 | if (likely(_idev != NULL)) \ | |
144 | SNMP_INC_STATS_BH((_idev)->stats.icmpv6, field); \ | |
145 | SNMP_INC_STATS_BH(icmpv6_statistics, field); \ | |
146 | }) | |
147 | #define ICMP6_INC_STATS_USER(idev, field) ({ \ | |
148 | struct inet6_dev *_idev = (idev); \ | |
149 | if (likely(_idev != NULL)) \ | |
150 | SNMP_INC_STATS_USER(_idev->stats.icmpv6, field); \ | |
151 | SNMP_INC_STATS_USER(icmpv6_statistics, field); \ | |
152 | }) | |
153 | #define ICMP6_INC_STATS_OFFSET_BH(idev, field, offset) ({ \ | |
154 | struct inet6_dev *_idev = idev; \ | |
155 | __typeof__(offset) _offset = (offset); \ | |
156 | if (likely(_idev != NULL)) \ | |
157 | SNMP_INC_STATS_OFFSET_BH(_idev->stats.icmpv6, field, _offset); \ | |
158 | SNMP_INC_STATS_OFFSET_BH(icmpv6_statistics, field, _offset); \ | |
159 | }) | |
160 | DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6); | |
ba4e58ec GR |
161 | DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6); |
162 | #define UDP6_INC_STATS_BH(field, is_udplite) do { \ | |
163 | if (is_udplite) SNMP_INC_STATS_BH(udplite_stats_in6, field); \ | |
164 | else SNMP_INC_STATS_BH(udp_stats_in6, field); } while(0) | |
165 | #define UDP6_INC_STATS_USER(field, is_udplite) do { \ | |
166 | if (is_udplite) SNMP_INC_STATS_USER(udplite_stats_in6, field); \ | |
167 | else SNMP_INC_STATS_USER(udp_stats_in6, field); } while(0) | |
1da177e4 LT |
168 | |
169 | int snmp6_register_dev(struct inet6_dev *idev); | |
170 | int snmp6_unregister_dev(struct inet6_dev *idev); | |
171 | int snmp6_alloc_dev(struct inet6_dev *idev); | |
172 | int snmp6_free_dev(struct inet6_dev *idev); | |
173 | int snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign); | |
174 | void snmp6_mib_free(void *ptr[2]); | |
175 | ||
176 | struct ip6_ra_chain | |
177 | { | |
178 | struct ip6_ra_chain *next; | |
179 | struct sock *sk; | |
180 | int sel; | |
181 | void (*destructor)(struct sock *); | |
182 | }; | |
183 | ||
184 | extern struct ip6_ra_chain *ip6_ra_chain; | |
185 | extern 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 | ||
192 | struct ipv6_txoptions | |
193 | { | |
194 | /* Length of this structure */ | |
195 | int tot_len; | |
196 | ||
197 | /* length of extension headers */ | |
198 | ||
199 | __u16 opt_flen; /* after fragment hdr */ | |
200 | __u16 opt_nflen; /* before fragment hdr */ | |
201 | ||
202 | struct ipv6_opt_hdr *hopopt; | |
203 | struct ipv6_opt_hdr *dst0opt; | |
204 | struct ipv6_rt_hdr *srcrt; /* Routing Header */ | |
1da177e4 LT |
205 | struct ipv6_opt_hdr *dst1opt; |
206 | ||
207 | /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ | |
208 | }; | |
209 | ||
210 | struct ip6_flowlabel | |
211 | { | |
212 | struct ip6_flowlabel *next; | |
90bcaf7b | 213 | __be32 label; |
1da177e4 LT |
214 | struct in6_addr dst; |
215 | struct ipv6_txoptions *opt; | |
216 | atomic_t users; | |
217 | unsigned long linger; | |
218 | u8 share; | |
219 | u32 owner; | |
220 | unsigned long lastuse; | |
221 | unsigned long expires; | |
222 | }; | |
223 | ||
224 | #define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF) | |
225 | #define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF) | |
226 | ||
227 | struct ipv6_fl_socklist | |
228 | { | |
229 | struct ipv6_fl_socklist *next; | |
230 | struct ip6_flowlabel *fl; | |
231 | }; | |
232 | ||
90bcaf7b | 233 | extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); |
1da177e4 LT |
234 | extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space, |
235 | struct ip6_flowlabel * fl, | |
236 | struct ipv6_txoptions * fopt); | |
237 | extern void fl6_free_socklist(struct sock *sk); | |
238 | extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen); | |
239 | extern void ip6_flowlabel_init(void); | |
240 | extern void ip6_flowlabel_cleanup(void); | |
241 | ||
242 | static inline void fl6_sock_release(struct ip6_flowlabel *fl) | |
243 | { | |
244 | if (fl) | |
245 | atomic_dec(&fl->users); | |
246 | } | |
247 | ||
248 | extern int ip6_ra_control(struct sock *sk, int sel, | |
249 | void (*destructor)(struct sock *)); | |
250 | ||
251 | ||
a80ff03e | 252 | extern int ipv6_parse_hopopts(struct sk_buff **skbp); |
1da177e4 LT |
253 | |
254 | extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt); | |
333fad53 YH |
255 | extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt, |
256 | int newtype, | |
257 | struct ipv6_opt_hdr __user *newopt, | |
258 | int newoptlen); | |
df9890c3 YH |
259 | struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, |
260 | struct ipv6_txoptions *opt); | |
1da177e4 | 261 | |
399c07de ACM |
262 | extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb); |
263 | ||
1da177e4 LT |
264 | extern int ip6_frag_nqueues; |
265 | extern atomic_t ip6_frag_mem; | |
266 | ||
267 | #define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */ | |
268 | ||
269 | /* | |
270 | * Function prototype for build_xmit | |
271 | */ | |
272 | ||
273 | typedef int (*inet_getfrag_t) (const void *data, | |
274 | struct in6_addr *addr, | |
275 | char *, | |
276 | unsigned int, unsigned int); | |
277 | ||
b1cacb68 YH |
278 | extern int __ipv6_addr_type(const struct in6_addr *addr); |
279 | static inline int ipv6_addr_type(const struct in6_addr *addr) | |
280 | { | |
281 | return __ipv6_addr_type(addr) & 0xffff; | |
282 | } | |
1da177e4 LT |
283 | |
284 | static inline int ipv6_addr_scope(const struct in6_addr *addr) | |
285 | { | |
b1cacb68 YH |
286 | return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK; |
287 | } | |
288 | ||
289 | static inline int __ipv6_addr_src_scope(int type) | |
290 | { | |
291 | return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16)); | |
292 | } | |
293 | ||
294 | static inline int ipv6_addr_src_scope(const struct in6_addr *addr) | |
295 | { | |
296 | return __ipv6_addr_src_scope(__ipv6_addr_type(addr)); | |
1da177e4 LT |
297 | } |
298 | ||
299 | static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2) | |
300 | { | |
301 | return memcmp((const void *) a1, (const void *) a2, sizeof(struct in6_addr)); | |
302 | } | |
303 | ||
f2ffd9ee PM |
304 | static inline int |
305 | ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, | |
306 | const struct in6_addr *a2) | |
307 | { | |
308 | unsigned int i; | |
309 | ||
310 | for (i = 0; i < 4; i++) | |
311 | if ((a1->s6_addr32[i] ^ a2->s6_addr32[i]) & m->s6_addr32[i]) | |
312 | return 1; | |
313 | return 0; | |
314 | } | |
315 | ||
1da177e4 LT |
316 | static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2) |
317 | { | |
318 | memcpy((void *) a1, (const void *) a2, sizeof(struct in6_addr)); | |
319 | } | |
320 | ||
321 | static inline void ipv6_addr_prefix(struct in6_addr *pfx, | |
322 | const struct in6_addr *addr, | |
323 | int plen) | |
324 | { | |
325 | /* caller must guarantee 0 <= plen <= 128 */ | |
326 | int o = plen >> 3, | |
327 | b = plen & 0x7; | |
328 | ||
329 | memcpy(pfx->s6_addr, addr, o); | |
330 | if (b != 0) { | |
331 | pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); | |
332 | o++; | |
333 | } | |
334 | if (o < 16) | |
335 | memset(pfx->s6_addr + o, 0, 16 - o); | |
336 | } | |
337 | ||
338 | #ifndef __HAVE_ARCH_ADDR_SET | |
339 | static inline void ipv6_addr_set(struct in6_addr *addr, | |
48818f82 AV |
340 | __be32 w1, __be32 w2, |
341 | __be32 w3, __be32 w4) | |
1da177e4 LT |
342 | { |
343 | addr->s6_addr32[0] = w1; | |
344 | addr->s6_addr32[1] = w2; | |
345 | addr->s6_addr32[2] = w3; | |
346 | addr->s6_addr32[3] = w4; | |
347 | } | |
348 | #endif | |
349 | ||
350 | static inline int ipv6_addr_equal(const struct in6_addr *a1, | |
351 | const struct in6_addr *a2) | |
352 | { | |
353 | return (a1->s6_addr32[0] == a2->s6_addr32[0] && | |
354 | a1->s6_addr32[1] == a2->s6_addr32[1] && | |
355 | a1->s6_addr32[2] == a2->s6_addr32[2] && | |
356 | a1->s6_addr32[3] == a2->s6_addr32[3]); | |
357 | } | |
358 | ||
48818f82 | 359 | static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2, |
1da177e4 LT |
360 | unsigned int prefixlen) |
361 | { | |
362 | unsigned pdw, pbi; | |
363 | ||
364 | /* check complete u32 in prefix */ | |
365 | pdw = prefixlen >> 5; | |
366 | if (pdw && memcmp(a1, a2, pdw << 2)) | |
367 | return 0; | |
368 | ||
369 | /* check incomplete u32 in prefix */ | |
370 | pbi = prefixlen & 0x1f; | |
371 | if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi)))) | |
372 | return 0; | |
373 | ||
374 | return 1; | |
375 | } | |
376 | ||
377 | static inline int ipv6_prefix_equal(const struct in6_addr *a1, | |
378 | const struct in6_addr *a2, | |
379 | unsigned int prefixlen) | |
380 | { | |
381 | return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32, | |
382 | prefixlen); | |
383 | } | |
384 | ||
385 | static inline int ipv6_addr_any(const struct in6_addr *a) | |
386 | { | |
387 | return ((a->s6_addr32[0] | a->s6_addr32[1] | | |
388 | a->s6_addr32[2] | a->s6_addr32[3] ) == 0); | |
389 | } | |
390 | ||
971f359d YH |
391 | /* |
392 | * find the first different bit between two addresses | |
393 | * length of address must be a multiple of 32bits | |
394 | */ | |
395 | static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen) | |
396 | { | |
397 | const __u32 *a1 = token1, *a2 = token2; | |
398 | int i; | |
399 | ||
400 | addrlen >>= 2; | |
401 | ||
402 | for (i = 0; i < addrlen; i++) { | |
403 | __u32 xb = a1[i] ^ a2[i]; | |
404 | if (xb) { | |
405 | int j = 31; | |
406 | ||
407 | xb = ntohl(xb); | |
408 | while ((xb & (1 << j)) == 0) | |
409 | j--; | |
410 | ||
411 | return (i * 32 + 31 - j); | |
412 | } | |
413 | } | |
414 | ||
415 | /* | |
416 | * we should *never* get to this point since that | |
417 | * would mean the addrs are equal | |
418 | * | |
419 | * However, we do get to it 8) And exacly, when | |
420 | * addresses are equal 8) | |
421 | * | |
422 | * ip route add 1111::/128 via ... | |
423 | * ip route add 1111::/64 via ... | |
424 | * and we are here. | |
425 | * | |
426 | * Ideally, this function should stop comparison | |
427 | * at prefix length. It does not, but it is still OK, | |
428 | * if returned value is greater than prefix length. | |
429 | * --ANK (980803) | |
430 | */ | |
431 | return (addrlen << 5); | |
432 | } | |
433 | ||
434 | static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2) | |
435 | { | |
436 | return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); | |
437 | } | |
438 | ||
1da177e4 LT |
439 | /* |
440 | * Prototypes exported by ipv6 | |
441 | */ | |
442 | ||
443 | /* | |
444 | * rcv function (called from netdevice level) | |
445 | */ | |
446 | ||
447 | extern int ipv6_rcv(struct sk_buff *skb, | |
448 | struct net_device *dev, | |
f2ccd8fa DM |
449 | struct packet_type *pt, |
450 | struct net_device *orig_dev); | |
1da177e4 | 451 | |
b05e1066 PM |
452 | extern int ip6_rcv_finish(struct sk_buff *skb); |
453 | ||
1da177e4 LT |
454 | /* |
455 | * upper-layer output functions | |
456 | */ | |
457 | extern int ip6_xmit(struct sock *sk, | |
458 | struct sk_buff *skb, | |
459 | struct flowi *fl, | |
460 | struct ipv6_txoptions *opt, | |
461 | int ipfragok); | |
462 | ||
463 | extern int ip6_nd_hdr(struct sock *sk, | |
464 | struct sk_buff *skb, | |
465 | struct net_device *dev, | |
466 | struct in6_addr *saddr, | |
467 | struct in6_addr *daddr, | |
468 | int proto, int len); | |
469 | ||
470 | extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr); | |
471 | ||
472 | extern int ip6_append_data(struct sock *sk, | |
473 | int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), | |
474 | void *from, | |
475 | int length, | |
476 | int transhdrlen, | |
477 | int hlimit, | |
41a1f8ea | 478 | int tclass, |
1da177e4 LT |
479 | struct ipv6_txoptions *opt, |
480 | struct flowi *fl, | |
481 | struct rt6_info *rt, | |
482 | unsigned int flags); | |
483 | ||
484 | extern int ip6_push_pending_frames(struct sock *sk); | |
485 | ||
486 | extern void ip6_flush_pending_frames(struct sock *sk); | |
487 | ||
488 | extern int ip6_dst_lookup(struct sock *sk, | |
489 | struct dst_entry **dst, | |
490 | struct flowi *fl); | |
497c615a HX |
491 | extern int ip6_sk_dst_lookup(struct sock *sk, |
492 | struct dst_entry **dst, | |
493 | struct flowi *fl); | |
1da177e4 LT |
494 | |
495 | /* | |
496 | * skb processing functions | |
497 | */ | |
498 | ||
499 | extern int ip6_output(struct sk_buff *skb); | |
500 | extern int ip6_forward(struct sk_buff *skb); | |
501 | extern int ip6_input(struct sk_buff *skb); | |
502 | extern int ip6_mc_input(struct sk_buff *skb); | |
503 | ||
504 | /* | |
505 | * Extension header (options) processing | |
506 | */ | |
507 | ||
508 | extern u8 * ipv6_build_nfrag_opts(struct sk_buff *skb, | |
509 | u8 *prev_hdr, | |
510 | struct ipv6_txoptions *opt, | |
511 | struct in6_addr *daddr, | |
512 | u32 jumbolen); | |
513 | extern u8 * ipv6_build_frag_opts(struct sk_buff *skb, | |
514 | u8 *prev_hdr, | |
515 | struct ipv6_txoptions *opt); | |
516 | extern void ipv6_push_nfrag_opts(struct sk_buff *skb, | |
517 | struct ipv6_txoptions *opt, | |
518 | u8 *proto, | |
519 | struct in6_addr **daddr_p); | |
520 | extern void ipv6_push_frag_opts(struct sk_buff *skb, | |
521 | struct ipv6_txoptions *opt, | |
522 | u8 *proto); | |
523 | ||
524 | extern int ipv6_skip_exthdr(const struct sk_buff *, int start, | |
0d3d077c | 525 | u8 *nexthdrp); |
1da177e4 LT |
526 | |
527 | extern int ipv6_ext_hdr(u8 nexthdr); | |
528 | ||
c61a4043 MN |
529 | extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type); |
530 | ||
1da177e4 LT |
531 | extern struct ipv6_txoptions * ipv6_invert_rthdr(struct sock *sk, |
532 | struct ipv6_rt_hdr *hdr); | |
533 | ||
534 | ||
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 LT |
557 | |
558 | extern void ipv6_packet_init(void); | |
559 | ||
560 | extern void ipv6_packet_cleanup(void); | |
561 | ||
562 | extern int ip6_datagram_connect(struct sock *sk, | |
563 | struct sockaddr *addr, int addr_len); | |
564 | ||
565 | extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len); | |
566 | extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, u16 port, | |
567 | u32 info, u8 *payload); | |
568 | extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info); | |
569 | ||
570 | extern int inet6_release(struct socket *sock); | |
571 | extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, | |
572 | int addr_len); | |
573 | extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr, | |
574 | int *uaddr_len, int peer); | |
575 | extern int inet6_ioctl(struct socket *sock, unsigned int cmd, | |
576 | unsigned long arg); | |
577 | ||
d8313f5c ACM |
578 | extern int inet6_hash_connect(struct inet_timewait_death_row *death_row, |
579 | struct sock *sk); | |
580 | ||
1da177e4 LT |
581 | /* |
582 | * reassembly.c | |
583 | */ | |
584 | extern int sysctl_ip6frag_high_thresh; | |
585 | extern int sysctl_ip6frag_low_thresh; | |
586 | extern int sysctl_ip6frag_time; | |
587 | extern int sysctl_ip6frag_secret_interval; | |
588 | ||
90ddc4f0 ED |
589 | extern const struct proto_ops inet6_stream_ops; |
590 | extern const struct proto_ops inet6_dgram_ops; | |
20380731 | 591 | |
14c85021 ACM |
592 | struct group_source_req; |
593 | struct group_filter; | |
594 | ||
20380731 ACM |
595 | extern int ip6_mc_source(int add, int omode, struct sock *sk, |
596 | struct group_source_req *pgsr); | |
597 | extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf); | |
598 | extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf, | |
599 | struct group_filter __user *optval, | |
600 | int __user *optlen); | |
601 | ||
602 | #ifdef CONFIG_PROC_FS | |
603 | extern int ac6_proc_init(void); | |
604 | extern void ac6_proc_exit(void); | |
605 | extern int raw6_proc_init(void); | |
606 | extern void raw6_proc_exit(void); | |
607 | extern int tcp6_proc_init(void); | |
608 | extern void tcp6_proc_exit(void); | |
609 | extern int udp6_proc_init(void); | |
610 | extern void udp6_proc_exit(void); | |
ba4e58ec GR |
611 | extern int udplite6_proc_init(void); |
612 | extern void udplite6_proc_exit(void); | |
20380731 ACM |
613 | extern int ipv6_misc_proc_init(void); |
614 | extern void ipv6_misc_proc_exit(void); | |
615 | ||
616 | extern struct rt6_statistics rt6_stats; | |
617 | #endif | |
1da177e4 | 618 | |
20380731 ACM |
619 | #ifdef CONFIG_SYSCTL |
620 | extern ctl_table ipv6_route_table[]; | |
621 | extern ctl_table ipv6_icmp_table[]; | |
1da177e4 | 622 | |
20380731 ACM |
623 | extern void ipv6_sysctl_register(void); |
624 | extern void ipv6_sysctl_unregister(void); | |
625 | #endif | |
1da177e4 | 626 | |
20380731 ACM |
627 | #endif /* __KERNEL__ */ |
628 | #endif /* _NET_IPV6_H */ |