Commit | Line | Data |
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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> | |
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 */ | |
112 | extern int sysctl_ipv6_bindv6only; | |
113 | extern int sysctl_mld_max_msf; | |
114 | ||
115 | /* MIBs */ | |
116 | DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics); | |
a11d206d YH |
117 | #define IP6_INC_STATS(idev,field) ({ \ |
118 | struct inet6_dev *_idev = (idev); \ | |
119 | if (likely(_idev != NULL)) \ | |
120 | SNMP_INC_STATS(_idev->stats.ipv6, field); \ | |
121 | SNMP_INC_STATS(ipv6_statistics, field); \ | |
122 | }) | |
123 | #define IP6_INC_STATS_BH(idev,field) ({ \ | |
124 | struct inet6_dev *_idev = (idev); \ | |
125 | if (likely(_idev != NULL)) \ | |
126 | SNMP_INC_STATS_BH(_idev->stats.ipv6, field); \ | |
127 | SNMP_INC_STATS_BH(ipv6_statistics, field); \ | |
128 | }) | |
129 | #define IP6_INC_STATS_USER(idev,field) ({ \ | |
130 | struct inet6_dev *_idev = (idev); \ | |
131 | if (likely(_idev != NULL)) \ | |
132 | SNMP_INC_STATS_USER(_idev->stats.ipv6, field); \ | |
133 | SNMP_INC_STATS_USER(ipv6_statistics, field); \ | |
134 | }) | |
1da177e4 LT |
135 | DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics); |
136 | #define ICMP6_INC_STATS(idev, field) ({ \ | |
137 | struct inet6_dev *_idev = (idev); \ | |
138 | if (likely(_idev != NULL)) \ | |
139 | SNMP_INC_STATS(idev->stats.icmpv6, field); \ | |
140 | SNMP_INC_STATS(icmpv6_statistics, field); \ | |
141 | }) | |
142 | #define ICMP6_INC_STATS_BH(idev, field) ({ \ | |
143 | struct inet6_dev *_idev = (idev); \ | |
144 | if (likely(_idev != NULL)) \ | |
145 | SNMP_INC_STATS_BH((_idev)->stats.icmpv6, field); \ | |
146 | SNMP_INC_STATS_BH(icmpv6_statistics, field); \ | |
147 | }) | |
148 | #define ICMP6_INC_STATS_USER(idev, field) ({ \ | |
149 | struct inet6_dev *_idev = (idev); \ | |
150 | if (likely(_idev != NULL)) \ | |
151 | SNMP_INC_STATS_USER(_idev->stats.icmpv6, field); \ | |
152 | SNMP_INC_STATS_USER(icmpv6_statistics, field); \ | |
153 | }) | |
154 | #define ICMP6_INC_STATS_OFFSET_BH(idev, field, offset) ({ \ | |
155 | struct inet6_dev *_idev = idev; \ | |
156 | __typeof__(offset) _offset = (offset); \ | |
157 | if (likely(_idev != NULL)) \ | |
158 | SNMP_INC_STATS_OFFSET_BH(_idev->stats.icmpv6, field, _offset); \ | |
159 | SNMP_INC_STATS_OFFSET_BH(icmpv6_statistics, field, _offset); \ | |
160 | }) | |
161 | DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6); | |
ba4e58ec GR |
162 | DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6); |
163 | #define UDP6_INC_STATS_BH(field, is_udplite) do { \ | |
164 | if (is_udplite) SNMP_INC_STATS_BH(udplite_stats_in6, field); \ | |
165 | else SNMP_INC_STATS_BH(udp_stats_in6, field); } while(0) | |
166 | #define UDP6_INC_STATS_USER(field, is_udplite) do { \ | |
167 | if (is_udplite) SNMP_INC_STATS_USER(udplite_stats_in6, field); \ | |
168 | else SNMP_INC_STATS_USER(udp_stats_in6, field); } while(0) | |
1da177e4 | 169 | |
1da177e4 LT |
170 | struct ip6_ra_chain |
171 | { | |
172 | struct ip6_ra_chain *next; | |
173 | struct sock *sk; | |
174 | int sel; | |
175 | void (*destructor)(struct sock *); | |
176 | }; | |
177 | ||
178 | extern struct ip6_ra_chain *ip6_ra_chain; | |
179 | extern rwlock_t ip6_ra_lock; | |
180 | ||
181 | /* | |
182 | This structure is prepared by protocol, when parsing | |
183 | ancillary data and passed to IPv6. | |
184 | */ | |
185 | ||
186 | struct ipv6_txoptions | |
187 | { | |
188 | /* Length of this structure */ | |
189 | int tot_len; | |
190 | ||
191 | /* length of extension headers */ | |
192 | ||
193 | __u16 opt_flen; /* after fragment hdr */ | |
194 | __u16 opt_nflen; /* before fragment hdr */ | |
195 | ||
196 | struct ipv6_opt_hdr *hopopt; | |
197 | struct ipv6_opt_hdr *dst0opt; | |
198 | struct ipv6_rt_hdr *srcrt; /* Routing Header */ | |
1da177e4 LT |
199 | struct ipv6_opt_hdr *dst1opt; |
200 | ||
201 | /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ | |
202 | }; | |
203 | ||
204 | struct ip6_flowlabel | |
205 | { | |
206 | struct ip6_flowlabel *next; | |
90bcaf7b | 207 | __be32 label; |
db3459d1 | 208 | atomic_t users; |
1da177e4 LT |
209 | struct in6_addr dst; |
210 | struct ipv6_txoptions *opt; | |
1da177e4 LT |
211 | unsigned long linger; |
212 | u8 share; | |
213 | u32 owner; | |
214 | unsigned long lastuse; | |
215 | unsigned long expires; | |
216 | }; | |
217 | ||
218 | #define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF) | |
219 | #define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF) | |
220 | ||
221 | struct ipv6_fl_socklist | |
222 | { | |
223 | struct ipv6_fl_socklist *next; | |
224 | struct ip6_flowlabel *fl; | |
225 | }; | |
226 | ||
90bcaf7b | 227 | extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); |
1da177e4 LT |
228 | extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space, |
229 | struct ip6_flowlabel * fl, | |
230 | struct ipv6_txoptions * fopt); | |
231 | extern void fl6_free_socklist(struct sock *sk); | |
232 | extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen); | |
233 | extern void ip6_flowlabel_init(void); | |
234 | extern void ip6_flowlabel_cleanup(void); | |
235 | ||
236 | static inline void fl6_sock_release(struct ip6_flowlabel *fl) | |
237 | { | |
238 | if (fl) | |
239 | atomic_dec(&fl->users); | |
240 | } | |
241 | ||
242 | extern int ip6_ra_control(struct sock *sk, int sel, | |
243 | void (*destructor)(struct sock *)); | |
244 | ||
245 | ||
a80ff03e | 246 | extern int ipv6_parse_hopopts(struct sk_buff **skbp); |
1da177e4 LT |
247 | |
248 | extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt); | |
333fad53 YH |
249 | extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt, |
250 | int newtype, | |
251 | struct ipv6_opt_hdr __user *newopt, | |
252 | int newoptlen); | |
df9890c3 YH |
253 | struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, |
254 | struct ipv6_txoptions *opt); | |
1da177e4 | 255 | |
399c07de ACM |
256 | extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb); |
257 | ||
1da177e4 LT |
258 | extern int ip6_frag_nqueues; |
259 | extern atomic_t ip6_frag_mem; | |
260 | ||
261 | #define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */ | |
262 | ||
263 | /* | |
264 | * Function prototype for build_xmit | |
265 | */ | |
266 | ||
267 | typedef int (*inet_getfrag_t) (const void *data, | |
268 | struct in6_addr *addr, | |
269 | char *, | |
270 | unsigned int, unsigned int); | |
271 | ||
b1cacb68 YH |
272 | extern int __ipv6_addr_type(const struct in6_addr *addr); |
273 | static inline int ipv6_addr_type(const struct in6_addr *addr) | |
274 | { | |
275 | return __ipv6_addr_type(addr) & 0xffff; | |
276 | } | |
1da177e4 LT |
277 | |
278 | static inline int ipv6_addr_scope(const struct in6_addr *addr) | |
279 | { | |
b1cacb68 YH |
280 | return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK; |
281 | } | |
282 | ||
283 | static inline int __ipv6_addr_src_scope(int type) | |
284 | { | |
285 | return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16)); | |
286 | } | |
287 | ||
288 | static inline int ipv6_addr_src_scope(const struct in6_addr *addr) | |
289 | { | |
290 | return __ipv6_addr_src_scope(__ipv6_addr_type(addr)); | |
1da177e4 LT |
291 | } |
292 | ||
293 | static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2) | |
294 | { | |
db3459d1 | 295 | return memcmp(a1, a2, sizeof(struct in6_addr)); |
1da177e4 LT |
296 | } |
297 | ||
f2ffd9ee PM |
298 | static inline int |
299 | ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, | |
300 | const struct in6_addr *a2) | |
301 | { | |
302 | unsigned int i; | |
303 | ||
304 | for (i = 0; i < 4; i++) | |
305 | if ((a1->s6_addr32[i] ^ a2->s6_addr32[i]) & m->s6_addr32[i]) | |
306 | return 1; | |
307 | return 0; | |
308 | } | |
309 | ||
1da177e4 LT |
310 | static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2) |
311 | { | |
db3459d1 | 312 | memcpy(a1, a2, sizeof(struct in6_addr)); |
1da177e4 LT |
313 | } |
314 | ||
315 | static inline void ipv6_addr_prefix(struct in6_addr *pfx, | |
316 | const struct in6_addr *addr, | |
317 | int plen) | |
318 | { | |
319 | /* caller must guarantee 0 <= plen <= 128 */ | |
320 | int o = plen >> 3, | |
321 | b = plen & 0x7; | |
322 | ||
db3459d1 | 323 | memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr)); |
1da177e4 | 324 | memcpy(pfx->s6_addr, addr, o); |
db3459d1 | 325 | if (b != 0) |
1da177e4 | 326 | pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); |
1da177e4 LT |
327 | } |
328 | ||
1da177e4 | 329 | static inline void ipv6_addr_set(struct in6_addr *addr, |
48818f82 AV |
330 | __be32 w1, __be32 w2, |
331 | __be32 w3, __be32 w4) | |
1da177e4 LT |
332 | { |
333 | addr->s6_addr32[0] = w1; | |
334 | addr->s6_addr32[1] = w2; | |
335 | addr->s6_addr32[2] = w3; | |
336 | addr->s6_addr32[3] = w4; | |
337 | } | |
1da177e4 LT |
338 | |
339 | static inline int ipv6_addr_equal(const struct in6_addr *a1, | |
340 | const struct in6_addr *a2) | |
341 | { | |
342 | return (a1->s6_addr32[0] == a2->s6_addr32[0] && | |
343 | a1->s6_addr32[1] == a2->s6_addr32[1] && | |
344 | a1->s6_addr32[2] == a2->s6_addr32[2] && | |
345 | a1->s6_addr32[3] == a2->s6_addr32[3]); | |
346 | } | |
347 | ||
48818f82 | 348 | static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2, |
1da177e4 LT |
349 | unsigned int prefixlen) |
350 | { | |
351 | unsigned pdw, pbi; | |
352 | ||
353 | /* check complete u32 in prefix */ | |
354 | pdw = prefixlen >> 5; | |
355 | if (pdw && memcmp(a1, a2, pdw << 2)) | |
356 | return 0; | |
357 | ||
358 | /* check incomplete u32 in prefix */ | |
359 | pbi = prefixlen & 0x1f; | |
360 | if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi)))) | |
361 | return 0; | |
362 | ||
363 | return 1; | |
364 | } | |
365 | ||
366 | static inline int ipv6_prefix_equal(const struct in6_addr *a1, | |
367 | const struct in6_addr *a2, | |
368 | unsigned int prefixlen) | |
369 | { | |
370 | return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32, | |
371 | prefixlen); | |
372 | } | |
373 | ||
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 | ||
971f359d YH |
386 | /* |
387 | * find the first different bit between two addresses | |
388 | * length of address must be a multiple of 32bits | |
389 | */ | |
390 | static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen) | |
391 | { | |
ef296f56 | 392 | const __be32 *a1 = token1, *a2 = token2; |
971f359d YH |
393 | int i; |
394 | ||
395 | addrlen >>= 2; | |
396 | ||
397 | for (i = 0; i < addrlen; i++) { | |
ef296f56 AV |
398 | __be32 xb = a1[i] ^ a2[i]; |
399 | if (xb) | |
400 | return i * 32 + 32 - fls(ntohl(xb)); | |
971f359d YH |
401 | } |
402 | ||
403 | /* | |
404 | * we should *never* get to this point since that | |
405 | * would mean the addrs are equal | |
406 | * | |
407 | * However, we do get to it 8) And exacly, when | |
408 | * addresses are equal 8) | |
409 | * | |
410 | * ip route add 1111::/128 via ... | |
411 | * ip route add 1111::/64 via ... | |
412 | * and we are here. | |
413 | * | |
414 | * Ideally, this function should stop comparison | |
415 | * at prefix length. It does not, but it is still OK, | |
416 | * if returned value is greater than prefix length. | |
417 | * --ANK (980803) | |
418 | */ | |
419 | return (addrlen << 5); | |
420 | } | |
421 | ||
422 | static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2) | |
423 | { | |
424 | return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); | |
425 | } | |
426 | ||
1da177e4 LT |
427 | /* |
428 | * Prototypes exported by ipv6 | |
429 | */ | |
430 | ||
431 | /* | |
432 | * rcv function (called from netdevice level) | |
433 | */ | |
434 | ||
435 | extern int ipv6_rcv(struct sk_buff *skb, | |
436 | struct net_device *dev, | |
f2ccd8fa DM |
437 | struct packet_type *pt, |
438 | struct net_device *orig_dev); | |
1da177e4 | 439 | |
b05e1066 PM |
440 | extern int ip6_rcv_finish(struct sk_buff *skb); |
441 | ||
1da177e4 LT |
442 | /* |
443 | * upper-layer output functions | |
444 | */ | |
445 | extern int ip6_xmit(struct sock *sk, | |
446 | struct sk_buff *skb, | |
447 | struct flowi *fl, | |
448 | struct ipv6_txoptions *opt, | |
449 | int ipfragok); | |
450 | ||
451 | extern int ip6_nd_hdr(struct sock *sk, | |
452 | struct sk_buff *skb, | |
453 | struct net_device *dev, | |
454 | struct in6_addr *saddr, | |
455 | struct in6_addr *daddr, | |
456 | int proto, int len); | |
457 | ||
458 | extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr); | |
459 | ||
460 | extern int ip6_append_data(struct sock *sk, | |
461 | int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), | |
462 | void *from, | |
463 | int length, | |
464 | int transhdrlen, | |
465 | int hlimit, | |
41a1f8ea | 466 | int tclass, |
1da177e4 LT |
467 | struct ipv6_txoptions *opt, |
468 | struct flowi *fl, | |
469 | struct rt6_info *rt, | |
470 | unsigned int flags); | |
471 | ||
472 | extern int ip6_push_pending_frames(struct sock *sk); | |
473 | ||
474 | extern void ip6_flush_pending_frames(struct sock *sk); | |
475 | ||
476 | extern int ip6_dst_lookup(struct sock *sk, | |
477 | struct dst_entry **dst, | |
478 | struct flowi *fl); | |
14e50e57 DM |
479 | extern int ip6_dst_blackhole(struct sock *sk, |
480 | struct dst_entry **dst, | |
481 | struct flowi *fl); | |
497c615a HX |
482 | extern int ip6_sk_dst_lookup(struct sock *sk, |
483 | struct dst_entry **dst, | |
484 | struct flowi *fl); | |
1da177e4 LT |
485 | |
486 | /* | |
487 | * skb processing functions | |
488 | */ | |
489 | ||
490 | extern int ip6_output(struct sk_buff *skb); | |
491 | extern int ip6_forward(struct sk_buff *skb); | |
492 | extern int ip6_input(struct sk_buff *skb); | |
493 | extern int ip6_mc_input(struct sk_buff *skb); | |
494 | ||
495 | /* | |
496 | * Extension header (options) processing | |
497 | */ | |
498 | ||
499 | extern u8 * ipv6_build_nfrag_opts(struct sk_buff *skb, | |
500 | u8 *prev_hdr, | |
501 | struct ipv6_txoptions *opt, | |
502 | struct in6_addr *daddr, | |
503 | u32 jumbolen); | |
504 | extern u8 * ipv6_build_frag_opts(struct sk_buff *skb, | |
505 | u8 *prev_hdr, | |
506 | struct ipv6_txoptions *opt); | |
507 | extern void ipv6_push_nfrag_opts(struct sk_buff *skb, | |
508 | struct ipv6_txoptions *opt, | |
509 | u8 *proto, | |
510 | struct in6_addr **daddr_p); | |
511 | extern void ipv6_push_frag_opts(struct sk_buff *skb, | |
512 | struct ipv6_txoptions *opt, | |
513 | u8 *proto); | |
514 | ||
515 | extern int ipv6_skip_exthdr(const struct sk_buff *, int start, | |
0d3d077c | 516 | u8 *nexthdrp); |
1da177e4 LT |
517 | |
518 | extern int ipv6_ext_hdr(u8 nexthdr); | |
519 | ||
c61a4043 MN |
520 | extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type); |
521 | ||
1da177e4 LT |
522 | /* |
523 | * socket options (ipv6_sockglue.c) | |
524 | */ | |
525 | ||
526 | extern int ipv6_setsockopt(struct sock *sk, int level, | |
527 | int optname, | |
528 | char __user *optval, | |
529 | int optlen); | |
530 | extern int ipv6_getsockopt(struct sock *sk, int level, | |
531 | int optname, | |
532 | char __user *optval, | |
533 | int __user *optlen); | |
3fdadf7d DM |
534 | extern int compat_ipv6_setsockopt(struct sock *sk, |
535 | int level, | |
536 | int optname, | |
537 | char __user *optval, | |
538 | int optlen); | |
539 | extern int compat_ipv6_getsockopt(struct sock *sk, | |
540 | int level, | |
541 | int optname, | |
542 | char __user *optval, | |
543 | int __user *optlen); | |
1da177e4 LT |
544 | |
545 | extern void ipv6_packet_init(void); | |
546 | ||
547 | extern void ipv6_packet_cleanup(void); | |
548 | ||
549 | extern int ip6_datagram_connect(struct sock *sk, | |
550 | struct sockaddr *addr, int addr_len); | |
551 | ||
552 | extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len); | |
e69a4adc | 553 | extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port, |
1da177e4 LT |
554 | u32 info, u8 *payload); |
555 | extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info); | |
556 | ||
557 | extern int inet6_release(struct socket *sock); | |
558 | extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, | |
559 | int addr_len); | |
560 | extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr, | |
561 | int *uaddr_len, int peer); | |
562 | extern int inet6_ioctl(struct socket *sock, unsigned int cmd, | |
563 | unsigned long arg); | |
564 | ||
d8313f5c ACM |
565 | extern int inet6_hash_connect(struct inet_timewait_death_row *death_row, |
566 | struct sock *sk); | |
567 | ||
1da177e4 LT |
568 | /* |
569 | * reassembly.c | |
570 | */ | |
571 | extern int sysctl_ip6frag_high_thresh; | |
572 | extern int sysctl_ip6frag_low_thresh; | |
573 | extern int sysctl_ip6frag_time; | |
574 | extern int sysctl_ip6frag_secret_interval; | |
575 | ||
90ddc4f0 ED |
576 | extern const struct proto_ops inet6_stream_ops; |
577 | extern const struct proto_ops inet6_dgram_ops; | |
20380731 | 578 | |
14c85021 ACM |
579 | struct group_source_req; |
580 | struct group_filter; | |
581 | ||
20380731 ACM |
582 | extern int ip6_mc_source(int add, int omode, struct sock *sk, |
583 | struct group_source_req *pgsr); | |
584 | extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf); | |
585 | extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf, | |
586 | struct group_filter __user *optval, | |
587 | int __user *optlen); | |
588 | ||
589 | #ifdef CONFIG_PROC_FS | |
590 | extern int ac6_proc_init(void); | |
591 | extern void ac6_proc_exit(void); | |
592 | extern int raw6_proc_init(void); | |
593 | extern void raw6_proc_exit(void); | |
594 | extern int tcp6_proc_init(void); | |
595 | extern void tcp6_proc_exit(void); | |
596 | extern int udp6_proc_init(void); | |
597 | extern void udp6_proc_exit(void); | |
ba4e58ec GR |
598 | extern int udplite6_proc_init(void); |
599 | extern void udplite6_proc_exit(void); | |
20380731 ACM |
600 | extern int ipv6_misc_proc_init(void); |
601 | extern void ipv6_misc_proc_exit(void); | |
7f7d9a6b HX |
602 | extern int snmp6_register_dev(struct inet6_dev *idev); |
603 | extern int snmp6_unregister_dev(struct inet6_dev *idev); | |
20380731 ACM |
604 | |
605 | extern struct rt6_statistics rt6_stats; | |
7f7d9a6b HX |
606 | #else |
607 | static inline int snmp6_register_dev(struct inet6_dev *idev) | |
608 | { | |
609 | return 0; | |
610 | } | |
611 | ||
612 | static inline int snmp6_unregister_dev(struct inet6_dev *idev) | |
613 | { | |
614 | return 0; | |
615 | } | |
20380731 | 616 | #endif |
1da177e4 | 617 | |
20380731 ACM |
618 | #ifdef CONFIG_SYSCTL |
619 | extern ctl_table ipv6_route_table[]; | |
620 | extern ctl_table ipv6_icmp_table[]; | |
1da177e4 | 621 | |
20380731 ACM |
622 | extern void ipv6_sysctl_register(void); |
623 | extern void ipv6_sysctl_unregister(void); | |
624 | #endif | |
1da177e4 | 625 | |
20380731 ACM |
626 | #endif /* __KERNEL__ */ |
627 | #endif /* _NET_IPV6_H */ |