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 */ | |
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; | |
60e8fbc4 | 205 | struct net *fl_net; |
1da177e4 LT |
206 | }; |
207 | ||
208 | #define IPV6_FLOWINFO_MASK __constant_htonl(0x0FFFFFFF) | |
209 | #define IPV6_FLOWLABEL_MASK __constant_htonl(0x000FFFFF) | |
210 | ||
211 | struct ipv6_fl_socklist | |
212 | { | |
213 | struct ipv6_fl_socklist *next; | |
214 | struct ip6_flowlabel *fl; | |
215 | }; | |
216 | ||
90bcaf7b | 217 | extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); |
1da177e4 LT |
218 | extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space, |
219 | struct ip6_flowlabel * fl, | |
220 | struct ipv6_txoptions * fopt); | |
221 | extern void fl6_free_socklist(struct sock *sk); | |
222 | extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen); | |
0a3e78ac | 223 | extern int ip6_flowlabel_init(void); |
1da177e4 LT |
224 | extern void ip6_flowlabel_cleanup(void); |
225 | ||
226 | static inline void fl6_sock_release(struct ip6_flowlabel *fl) | |
227 | { | |
228 | if (fl) | |
229 | atomic_dec(&fl->users); | |
230 | } | |
231 | ||
232 | extern int ip6_ra_control(struct sock *sk, int sel, | |
233 | void (*destructor)(struct sock *)); | |
234 | ||
235 | ||
e5bbef20 | 236 | extern int ipv6_parse_hopopts(struct sk_buff *skb); |
1da177e4 LT |
237 | |
238 | extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt); | |
333fad53 YH |
239 | extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt, |
240 | int newtype, | |
241 | struct ipv6_opt_hdr __user *newopt, | |
242 | int newoptlen); | |
df9890c3 YH |
243 | struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, |
244 | struct ipv6_txoptions *opt); | |
1da177e4 | 245 | |
399c07de ACM |
246 | extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb); |
247 | ||
e5a2bb84 | 248 | int ip6_frag_nqueues(struct net *net); |
6ddc0822 | 249 | int ip6_frag_mem(struct net *net); |
1da177e4 LT |
250 | |
251 | #define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */ | |
252 | ||
b1cacb68 YH |
253 | extern int __ipv6_addr_type(const struct in6_addr *addr); |
254 | static inline int ipv6_addr_type(const struct in6_addr *addr) | |
255 | { | |
256 | return __ipv6_addr_type(addr) & 0xffff; | |
257 | } | |
1da177e4 LT |
258 | |
259 | static 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 | ||
264 | static inline int __ipv6_addr_src_scope(int type) | |
265 | { | |
266 | return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16)); | |
267 | } | |
268 | ||
269 | static 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 | ||
274 | static 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 |
279 | static inline int |
280 | ipv6_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 |
289 | static 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 | ||
294 | static 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 | 308 | static 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 | |
318 | static 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 | 327 | static 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 | ||
345 | static 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 | 353 | struct inet_frag_queue; |
2588fe1d | 354 | |
c6fda282 PE |
355 | struct ip6_create_arg { |
356 | __be32 id; | |
357 | struct in6_addr *src; | |
358 | struct in6_addr *dst; | |
359 | }; | |
360 | ||
361 | void ip6_frag_init(struct inet_frag_queue *q, void *a); | |
abd6523d | 362 | int ip6_frag_match(struct inet_frag_queue *q, void *a); |
c6fda282 | 363 | |
1da177e4 LT |
364 | static inline int ipv6_addr_any(const struct in6_addr *a) |
365 | { | |
366 | return ((a->s6_addr32[0] | a->s6_addr32[1] | | |
367 | a->s6_addr32[2] | a->s6_addr32[3] ) == 0); | |
368 | } | |
369 | ||
e773e4fa BH |
370 | static inline int ipv6_addr_v4mapped(const struct in6_addr *a) |
371 | { | |
fed85383 YH |
372 | return ((a->s6_addr32[0] | a->s6_addr32[1] | |
373 | (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0); | |
e773e4fa BH |
374 | } |
375 | ||
99cd07a5 JMT |
376 | /* |
377 | * Check for a RFC 4843 ORCHID address | |
378 | * (Overlay Routable Cryptographic Hash Identifiers) | |
379 | */ | |
380 | static inline int ipv6_addr_orchid(const struct in6_addr *a) | |
381 | { | |
382 | return ((a->s6_addr32[0] & htonl(0xfffffff0)) | |
383 | == htonl(0x20010010)); | |
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, | |
9acd9f3a YH |
454 | const struct in6_addr *saddr, |
455 | const struct in6_addr *daddr, | |
1da177e4 LT |
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 | ||
ef76bc23 HX |
495 | extern int __ip6_local_out(struct sk_buff *skb); |
496 | extern int ip6_local_out(struct sk_buff *skb); | |
497 | ||
1da177e4 LT |
498 | /* |
499 | * Extension header (options) processing | |
500 | */ | |
501 | ||
1da177e4 LT |
502 | extern void ipv6_push_nfrag_opts(struct sk_buff *skb, |
503 | struct ipv6_txoptions *opt, | |
504 | u8 *proto, | |
505 | struct in6_addr **daddr_p); | |
506 | extern void ipv6_push_frag_opts(struct sk_buff *skb, | |
507 | struct ipv6_txoptions *opt, | |
508 | u8 *proto); | |
509 | ||
510 | extern int ipv6_skip_exthdr(const struct sk_buff *, int start, | |
0d3d077c | 511 | u8 *nexthdrp); |
1da177e4 LT |
512 | |
513 | extern int ipv6_ext_hdr(u8 nexthdr); | |
514 | ||
c61a4043 MN |
515 | extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type); |
516 | ||
1da177e4 LT |
517 | /* |
518 | * socket options (ipv6_sockglue.c) | |
519 | */ | |
520 | ||
521 | extern int ipv6_setsockopt(struct sock *sk, int level, | |
522 | int optname, | |
523 | char __user *optval, | |
524 | int optlen); | |
525 | extern int ipv6_getsockopt(struct sock *sk, int level, | |
526 | int optname, | |
527 | char __user *optval, | |
528 | int __user *optlen); | |
3fdadf7d DM |
529 | extern int compat_ipv6_setsockopt(struct sock *sk, |
530 | int level, | |
531 | int optname, | |
532 | char __user *optval, | |
533 | int optlen); | |
534 | extern int compat_ipv6_getsockopt(struct sock *sk, | |
535 | int level, | |
536 | int optname, | |
537 | char __user *optval, | |
538 | int __user *optlen); | |
1da177e4 | 539 | |
1da177e4 LT |
540 | extern int ip6_datagram_connect(struct sock *sk, |
541 | struct sockaddr *addr, int addr_len); | |
542 | ||
543 | extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len); | |
e69a4adc | 544 | extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port, |
1da177e4 LT |
545 | u32 info, u8 *payload); |
546 | extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info); | |
547 | ||
548 | extern int inet6_release(struct socket *sock); | |
549 | extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, | |
550 | int addr_len); | |
551 | extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr, | |
552 | int *uaddr_len, int peer); | |
553 | extern int inet6_ioctl(struct socket *sock, unsigned int cmd, | |
554 | unsigned long arg); | |
555 | ||
d8313f5c ACM |
556 | extern int inet6_hash_connect(struct inet_timewait_death_row *death_row, |
557 | struct sock *sk); | |
558 | ||
1da177e4 LT |
559 | /* |
560 | * reassembly.c | |
561 | */ | |
90ddc4f0 ED |
562 | extern const struct proto_ops inet6_stream_ops; |
563 | extern const struct proto_ops inet6_dgram_ops; | |
20380731 | 564 | |
14c85021 ACM |
565 | struct group_source_req; |
566 | struct group_filter; | |
567 | ||
20380731 ACM |
568 | extern int ip6_mc_source(int add, int omode, struct sock *sk, |
569 | struct group_source_req *pgsr); | |
570 | extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf); | |
571 | extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf, | |
572 | struct group_filter __user *optval, | |
573 | int __user *optlen); | |
574 | ||
575 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
576 | extern int ac6_proc_init(struct net *net); |
577 | extern void ac6_proc_exit(struct net *net); | |
20380731 ACM |
578 | extern int raw6_proc_init(void); |
579 | extern void raw6_proc_exit(void); | |
6f8b13bc DL |
580 | extern int tcp6_proc_init(struct net *net); |
581 | extern void tcp6_proc_exit(struct net *net); | |
0c96d8c5 DL |
582 | extern int udp6_proc_init(struct net *net); |
583 | extern void udp6_proc_exit(struct net *net); | |
ba4e58ec GR |
584 | extern int udplite6_proc_init(void); |
585 | extern void udplite6_proc_exit(void); | |
20380731 ACM |
586 | extern int ipv6_misc_proc_init(void); |
587 | extern void ipv6_misc_proc_exit(void); | |
7f7d9a6b HX |
588 | extern int snmp6_register_dev(struct inet6_dev *idev); |
589 | extern int snmp6_unregister_dev(struct inet6_dev *idev); | |
20380731 | 590 | |
7f7d9a6b | 591 | #else |
6ab57e7e DL |
592 | static inline int ac6_proc_init(struct net *net) { return 0; } |
593 | static inline void ac6_proc_exit(struct net *net) { } | |
594 | static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; } | |
595 | static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; } | |
20380731 | 596 | #endif |
1da177e4 | 597 | |
20380731 | 598 | #ifdef CONFIG_SYSCTL |
760f2d01 DL |
599 | extern ctl_table ipv6_route_table_template[]; |
600 | extern ctl_table ipv6_icmp_table_template[]; | |
1da177e4 | 601 | |
6de1a910 DL |
602 | extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net); |
603 | extern struct ctl_table *ipv6_route_sysctl_init(struct net *net); | |
291480c0 | 604 | extern int ipv6_sysctl_register(void); |
20380731 ACM |
605 | extern void ipv6_sysctl_unregister(void); |
606 | #endif | |
1da177e4 | 607 | |
20380731 ACM |
608 | #endif /* __KERNEL__ */ |
609 | #endif /* _NET_IPV6_H */ |