Root/
1 | /* |
2 | * Linux INET6 implementation |
3 | * |
4 | * Authors: |
5 | * Pedro Roque <roque@di.fc.ul.pt> |
6 | * |
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> |
18 | #include <net/if_inet6.h> |
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. */ |
42 | #define NEXTHDR_MOBILITY 135 /* Mobility header. */ |
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 | |
77 | /* |
78 | * Addr scopes |
79 | */ |
80 | #ifdef __KERNEL__ |
81 | #define IPV6_ADDR_MC_SCOPE(a) \ |
82 | ((a)->s6_addr[1] & 0x0f) /* nonstandard */ |
83 | #define __IPV6_ADDR_SCOPE_INVALID -1 |
84 | #endif |
85 | #define IPV6_ADDR_SCOPE_NODELOCAL 0x01 |
86 | #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02 |
87 | #define IPV6_ADDR_SCOPE_SITELOCAL 0x05 |
88 | #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 |
89 | #define IPV6_ADDR_SCOPE_GLOBAL 0x0e |
90 | |
91 | /* |
92 | * fragmentation header |
93 | */ |
94 | |
95 | struct frag_hdr { |
96 | __u8 nexthdr; |
97 | __u8 reserved; |
98 | __be16 frag_off; |
99 | __be32 identification; |
100 | }; |
101 | |
102 | #define IP6_MF 0x0001 |
103 | |
104 | #ifdef __KERNEL__ |
105 | |
106 | #include <net/sock.h> |
107 | |
108 | /* sysctls */ |
109 | extern int sysctl_mld_max_msf; |
110 | extern struct ctl_path net_ipv6_ctl_path[]; |
111 | |
112 | #define _DEVINC(net, statname, modifier, idev, field) \ |
113 | ({ \ |
114 | struct inet6_dev *_idev = (idev); \ |
115 | if (likely(_idev != NULL)) \ |
116 | SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \ |
117 | SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\ |
118 | }) |
119 | |
120 | #define _DEVADD(net, statname, modifier, idev, field, val) \ |
121 | ({ \ |
122 | struct inet6_dev *_idev = (idev); \ |
123 | if (likely(_idev != NULL)) \ |
124 | SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \ |
125 | SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\ |
126 | }) |
127 | |
128 | #define _DEVUPD(net, statname, modifier, idev, field, val) \ |
129 | ({ \ |
130 | struct inet6_dev *_idev = (idev); \ |
131 | if (likely(_idev != NULL)) \ |
132 | SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \ |
133 | SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\ |
134 | }) |
135 | |
136 | /* MIBs */ |
137 | |
138 | #define IP6_INC_STATS(net, idev,field) \ |
139 | _DEVINC(net, ipv6, , idev, field) |
140 | #define IP6_INC_STATS_BH(net, idev,field) \ |
141 | _DEVINC(net, ipv6, _BH, idev, field) |
142 | #define IP6_ADD_STATS(net, idev,field,val) \ |
143 | _DEVADD(net, ipv6, , idev, field, val) |
144 | #define IP6_ADD_STATS_BH(net, idev,field,val) \ |
145 | _DEVADD(net, ipv6, _BH, idev, field, val) |
146 | #define IP6_UPD_PO_STATS(net, idev,field,val) \ |
147 | _DEVUPD(net, ipv6, , idev, field, val) |
148 | #define IP6_UPD_PO_STATS_BH(net, idev,field,val) \ |
149 | _DEVUPD(net, ipv6, _BH, idev, field, val) |
150 | #define ICMP6_INC_STATS(net, idev, field) \ |
151 | _DEVINC(net, icmpv6, , idev, field) |
152 | #define ICMP6_INC_STATS_BH(net, idev, field) \ |
153 | _DEVINC(net, icmpv6, _BH, idev, field) |
154 | |
155 | #define ICMP6MSGOUT_INC_STATS(net, idev, field) \ |
156 | _DEVINC(net, icmpv6msg, , idev, field +256) |
157 | #define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \ |
158 | _DEVINC(net, icmpv6msg, _BH, idev, field +256) |
159 | #define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \ |
160 | _DEVINC(net, icmpv6msg, _BH, idev, field) |
161 | |
162 | struct ip6_ra_chain { |
163 | struct ip6_ra_chain *next; |
164 | struct sock *sk; |
165 | int sel; |
166 | void (*destructor)(struct sock *); |
167 | }; |
168 | |
169 | extern struct ip6_ra_chain *ip6_ra_chain; |
170 | extern rwlock_t ip6_ra_lock; |
171 | |
172 | /* |
173 | This structure is prepared by protocol, when parsing |
174 | ancillary data and passed to IPv6. |
175 | */ |
176 | |
177 | struct ipv6_txoptions { |
178 | /* Length of this structure */ |
179 | int tot_len; |
180 | |
181 | /* length of extension headers */ |
182 | |
183 | __u16 opt_flen; /* after fragment hdr */ |
184 | __u16 opt_nflen; /* before fragment hdr */ |
185 | |
186 | struct ipv6_opt_hdr *hopopt; |
187 | struct ipv6_opt_hdr *dst0opt; |
188 | struct ipv6_rt_hdr *srcrt; /* Routing Header */ |
189 | struct ipv6_opt_hdr *dst1opt; |
190 | |
191 | /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ |
192 | }; |
193 | |
194 | struct ip6_flowlabel { |
195 | struct ip6_flowlabel *next; |
196 | __be32 label; |
197 | atomic_t users; |
198 | struct in6_addr dst; |
199 | struct ipv6_txoptions *opt; |
200 | unsigned long linger; |
201 | u8 share; |
202 | u32 owner; |
203 | unsigned long lastuse; |
204 | unsigned long expires; |
205 | struct net *fl_net; |
206 | }; |
207 | |
208 | #define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF) |
209 | #define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF) |
210 | |
211 | struct ipv6_fl_socklist { |
212 | struct ipv6_fl_socklist *next; |
213 | struct ip6_flowlabel *fl; |
214 | }; |
215 | |
216 | extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); |
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); |
222 | extern int ip6_flowlabel_init(void); |
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 | |
233 | extern int ipv6_parse_hopopts(struct sk_buff *skb); |
234 | |
235 | extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt); |
236 | extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt, |
237 | int newtype, |
238 | struct ipv6_opt_hdr __user *newopt, |
239 | int newoptlen); |
240 | struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, |
241 | struct ipv6_txoptions *opt); |
242 | |
243 | extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb); |
244 | |
245 | int ip6_frag_nqueues(struct net *net); |
246 | int ip6_frag_mem(struct net *net); |
247 | |
248 | #define IPV6_FRAG_HIGH_THRESH (256 * 1024) /* 262144 */ |
249 | #define IPV6_FRAG_LOW_THRESH (192 * 1024) /* 196608 */ |
250 | #define IPV6_FRAG_TIMEOUT (60 * HZ) /* 60 seconds */ |
251 | |
252 | extern int __ipv6_addr_type(const struct in6_addr *addr); |
253 | static inline int ipv6_addr_type(const struct in6_addr *addr) |
254 | { |
255 | return __ipv6_addr_type(addr) & 0xffff; |
256 | } |
257 | |
258 | static inline int ipv6_addr_scope(const struct in6_addr *addr) |
259 | { |
260 | return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK; |
261 | } |
262 | |
263 | static inline int __ipv6_addr_src_scope(int type) |
264 | { |
265 | return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16)); |
266 | } |
267 | |
268 | static inline int ipv6_addr_src_scope(const struct in6_addr *addr) |
269 | { |
270 | return __ipv6_addr_src_scope(__ipv6_addr_type(addr)); |
271 | } |
272 | |
273 | static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2) |
274 | { |
275 | return memcmp(a1, a2, sizeof(struct in6_addr)); |
276 | } |
277 | |
278 | static inline int |
279 | ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, |
280 | const struct in6_addr *a2) |
281 | { |
282 | return (!!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) | |
283 | ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) | |
284 | ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) | |
285 | ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3]))); |
286 | } |
287 | |
288 | static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2) |
289 | { |
290 | memcpy(a1, a2, sizeof(struct in6_addr)); |
291 | } |
292 | |
293 | static inline void ipv6_addr_prefix(struct in6_addr *pfx, |
294 | const struct in6_addr *addr, |
295 | int plen) |
296 | { |
297 | /* caller must guarantee 0 <= plen <= 128 */ |
298 | int o = plen >> 3, |
299 | b = plen & 0x7; |
300 | |
301 | memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr)); |
302 | memcpy(pfx->s6_addr, addr, o); |
303 | if (b != 0) |
304 | pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); |
305 | } |
306 | |
307 | static inline void ipv6_addr_set(struct in6_addr *addr, |
308 | __be32 w1, __be32 w2, |
309 | __be32 w3, __be32 w4) |
310 | { |
311 | addr->s6_addr32[0] = w1; |
312 | addr->s6_addr32[1] = w2; |
313 | addr->s6_addr32[2] = w3; |
314 | addr->s6_addr32[3] = w4; |
315 | } |
316 | |
317 | static inline int ipv6_addr_equal(const struct in6_addr *a1, |
318 | const struct in6_addr *a2) |
319 | { |
320 | return (((a1->s6_addr32[0] ^ a2->s6_addr32[0]) | |
321 | (a1->s6_addr32[1] ^ a2->s6_addr32[1]) | |
322 | (a1->s6_addr32[2] ^ a2->s6_addr32[2]) | |
323 | (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0); |
324 | } |
325 | |
326 | static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2, |
327 | unsigned int prefixlen) |
328 | { |
329 | unsigned pdw, pbi; |
330 | |
331 | /* check complete u32 in prefix */ |
332 | pdw = prefixlen >> 5; |
333 | if (pdw && memcmp(a1, a2, pdw << 2)) |
334 | return 0; |
335 | |
336 | /* check incomplete u32 in prefix */ |
337 | pbi = prefixlen & 0x1f; |
338 | if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi)))) |
339 | return 0; |
340 | |
341 | return 1; |
342 | } |
343 | |
344 | static inline int ipv6_prefix_equal(const struct in6_addr *a1, |
345 | const struct in6_addr *a2, |
346 | unsigned int prefixlen) |
347 | { |
348 | return __ipv6_prefix_equal(a1->s6_addr32, a2->s6_addr32, |
349 | prefixlen); |
350 | } |
351 | |
352 | struct inet_frag_queue; |
353 | |
354 | enum ip6_defrag_users { |
355 | IP6_DEFRAG_LOCAL_DELIVER, |
356 | IP6_DEFRAG_CONNTRACK_IN, |
357 | __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHORT_MAX, |
358 | IP6_DEFRAG_CONNTRACK_OUT, |
359 | __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHORT_MAX, |
360 | IP6_DEFRAG_CONNTRACK_BRIDGE_IN, |
361 | __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHORT_MAX, |
362 | }; |
363 | |
364 | struct ip6_create_arg { |
365 | __be32 id; |
366 | u32 user; |
367 | struct in6_addr *src; |
368 | struct in6_addr *dst; |
369 | }; |
370 | |
371 | void ip6_frag_init(struct inet_frag_queue *q, void *a); |
372 | int ip6_frag_match(struct inet_frag_queue *q, void *a); |
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 | |
380 | static inline int ipv6_addr_loopback(const struct in6_addr *a) |
381 | { |
382 | return ((a->s6_addr32[0] | a->s6_addr32[1] | |
383 | a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0); |
384 | } |
385 | |
386 | static inline int ipv6_addr_v4mapped(const struct in6_addr *a) |
387 | { |
388 | return ((a->s6_addr32[0] | a->s6_addr32[1] | |
389 | (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0); |
390 | } |
391 | |
392 | /* |
393 | * Check for a RFC 4843 ORCHID address |
394 | * (Overlay Routable Cryptographic Hash Identifiers) |
395 | */ |
396 | static inline int ipv6_addr_orchid(const struct in6_addr *a) |
397 | { |
398 | return ((a->s6_addr32[0] & htonl(0xfffffff0)) |
399 | == htonl(0x20010010)); |
400 | } |
401 | |
402 | static inline void ipv6_addr_set_v4mapped(const __be32 addr, |
403 | struct in6_addr *v4mapped) |
404 | { |
405 | ipv6_addr_set(v4mapped, |
406 | 0, 0, |
407 | htonl(0x0000FFFF), |
408 | addr); |
409 | } |
410 | |
411 | /* |
412 | * find the first different bit between two addresses |
413 | * length of address must be a multiple of 32bits |
414 | */ |
415 | static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen) |
416 | { |
417 | const __be32 *a1 = token1, *a2 = token2; |
418 | int i; |
419 | |
420 | addrlen >>= 2; |
421 | |
422 | for (i = 0; i < addrlen; i++) { |
423 | __be32 xb = a1[i] ^ a2[i]; |
424 | if (xb) |
425 | return i * 32 + 32 - fls(ntohl(xb)); |
426 | } |
427 | |
428 | /* |
429 | * we should *never* get to this point since that |
430 | * would mean the addrs are equal |
431 | * |
432 | * However, we do get to it 8) And exacly, when |
433 | * addresses are equal 8) |
434 | * |
435 | * ip route add 1111::/128 via ... |
436 | * ip route add 1111::/64 via ... |
437 | * and we are here. |
438 | * |
439 | * Ideally, this function should stop comparison |
440 | * at prefix length. It does not, but it is still OK, |
441 | * if returned value is greater than prefix length. |
442 | * --ANK (980803) |
443 | */ |
444 | return (addrlen << 5); |
445 | } |
446 | |
447 | static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2) |
448 | { |
449 | return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); |
450 | } |
451 | |
452 | static __inline__ void ipv6_select_ident(struct frag_hdr *fhdr) |
453 | { |
454 | static u32 ipv6_fragmentation_id = 1; |
455 | static DEFINE_SPINLOCK(ip6_id_lock); |
456 | |
457 | spin_lock_bh(&ip6_id_lock); |
458 | fhdr->identification = htonl(ipv6_fragmentation_id); |
459 | if (++ipv6_fragmentation_id == 0) |
460 | ipv6_fragmentation_id = 1; |
461 | spin_unlock_bh(&ip6_id_lock); |
462 | } |
463 | |
464 | /* |
465 | * Prototypes exported by ipv6 |
466 | */ |
467 | |
468 | /* |
469 | * rcv function (called from netdevice level) |
470 | */ |
471 | |
472 | extern int ipv6_rcv(struct sk_buff *skb, |
473 | struct net_device *dev, |
474 | struct packet_type *pt, |
475 | struct net_device *orig_dev); |
476 | |
477 | extern int ip6_rcv_finish(struct sk_buff *skb); |
478 | |
479 | /* |
480 | * upper-layer output functions |
481 | */ |
482 | extern int ip6_xmit(struct sock *sk, |
483 | struct sk_buff *skb, |
484 | struct flowi *fl, |
485 | struct ipv6_txoptions *opt, |
486 | int ipfragok); |
487 | |
488 | extern int ip6_nd_hdr(struct sock *sk, |
489 | struct sk_buff *skb, |
490 | struct net_device *dev, |
491 | const struct in6_addr *saddr, |
492 | const struct in6_addr *daddr, |
493 | int proto, int len); |
494 | |
495 | extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr); |
496 | |
497 | extern int ip6_append_data(struct sock *sk, |
498 | int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), |
499 | void *from, |
500 | int length, |
501 | int transhdrlen, |
502 | int hlimit, |
503 | int tclass, |
504 | struct ipv6_txoptions *opt, |
505 | struct flowi *fl, |
506 | struct rt6_info *rt, |
507 | unsigned int flags); |
508 | |
509 | extern int ip6_push_pending_frames(struct sock *sk); |
510 | |
511 | extern void ip6_flush_pending_frames(struct sock *sk); |
512 | |
513 | extern int ip6_dst_lookup(struct sock *sk, |
514 | struct dst_entry **dst, |
515 | struct flowi *fl); |
516 | extern int ip6_dst_blackhole(struct sock *sk, |
517 | struct dst_entry **dst, |
518 | struct flowi *fl); |
519 | extern int ip6_sk_dst_lookup(struct sock *sk, |
520 | struct dst_entry **dst, |
521 | struct flowi *fl); |
522 | |
523 | /* |
524 | * skb processing functions |
525 | */ |
526 | |
527 | extern int ip6_output(struct sk_buff *skb); |
528 | extern int ip6_forward(struct sk_buff *skb); |
529 | extern int ip6_input(struct sk_buff *skb); |
530 | extern int ip6_mc_input(struct sk_buff *skb); |
531 | |
532 | extern int __ip6_local_out(struct sk_buff *skb); |
533 | extern int ip6_local_out(struct sk_buff *skb); |
534 | |
535 | /* |
536 | * Extension header (options) processing |
537 | */ |
538 | |
539 | extern void ipv6_push_nfrag_opts(struct sk_buff *skb, |
540 | struct ipv6_txoptions *opt, |
541 | u8 *proto, |
542 | struct in6_addr **daddr_p); |
543 | extern void ipv6_push_frag_opts(struct sk_buff *skb, |
544 | struct ipv6_txoptions *opt, |
545 | u8 *proto); |
546 | |
547 | extern int ipv6_skip_exthdr(const struct sk_buff *, int start, |
548 | u8 *nexthdrp); |
549 | |
550 | extern int ipv6_ext_hdr(u8 nexthdr); |
551 | |
552 | extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type); |
553 | |
554 | /* |
555 | * socket options (ipv6_sockglue.c) |
556 | */ |
557 | |
558 | extern int ipv6_setsockopt(struct sock *sk, int level, |
559 | int optname, |
560 | char __user *optval, |
561 | unsigned int optlen); |
562 | extern int ipv6_getsockopt(struct sock *sk, int level, |
563 | int optname, |
564 | char __user *optval, |
565 | int __user *optlen); |
566 | extern int compat_ipv6_setsockopt(struct sock *sk, |
567 | int level, |
568 | int optname, |
569 | char __user *optval, |
570 | unsigned int optlen); |
571 | extern int compat_ipv6_getsockopt(struct sock *sk, |
572 | int level, |
573 | int optname, |
574 | char __user *optval, |
575 | int __user *optlen); |
576 | |
577 | extern int ip6_datagram_connect(struct sock *sk, |
578 | struct sockaddr *addr, int addr_len); |
579 | |
580 | extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len); |
581 | extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port, |
582 | u32 info, u8 *payload); |
583 | extern void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info); |
584 | |
585 | extern int inet6_release(struct socket *sock); |
586 | extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr, |
587 | int addr_len); |
588 | extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
589 | int *uaddr_len, int peer); |
590 | extern int inet6_ioctl(struct socket *sock, unsigned int cmd, |
591 | unsigned long arg); |
592 | |
593 | extern int inet6_hash_connect(struct inet_timewait_death_row *death_row, |
594 | struct sock *sk); |
595 | |
596 | /* |
597 | * reassembly.c |
598 | */ |
599 | extern const struct proto_ops inet6_stream_ops; |
600 | extern const struct proto_ops inet6_dgram_ops; |
601 | |
602 | struct group_source_req; |
603 | struct group_filter; |
604 | |
605 | extern int ip6_mc_source(int add, int omode, struct sock *sk, |
606 | struct group_source_req *pgsr); |
607 | extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf); |
608 | extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf, |
609 | struct group_filter __user *optval, |
610 | int __user *optlen); |
611 | extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr, |
612 | const struct in6_addr *daddr, u32 rnd); |
613 | |
614 | #ifdef CONFIG_PROC_FS |
615 | extern int ac6_proc_init(struct net *net); |
616 | extern void ac6_proc_exit(struct net *net); |
617 | extern int raw6_proc_init(void); |
618 | extern void raw6_proc_exit(void); |
619 | extern int tcp6_proc_init(struct net *net); |
620 | extern void tcp6_proc_exit(struct net *net); |
621 | extern int udp6_proc_init(struct net *net); |
622 | extern void udp6_proc_exit(struct net *net); |
623 | extern int udplite6_proc_init(void); |
624 | extern void udplite6_proc_exit(void); |
625 | extern int ipv6_misc_proc_init(void); |
626 | extern void ipv6_misc_proc_exit(void); |
627 | extern int snmp6_register_dev(struct inet6_dev *idev); |
628 | extern int snmp6_unregister_dev(struct inet6_dev *idev); |
629 | |
630 | #else |
631 | static inline int ac6_proc_init(struct net *net) { return 0; } |
632 | static inline void ac6_proc_exit(struct net *net) { } |
633 | static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; } |
634 | static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; } |
635 | #endif |
636 | |
637 | #ifdef CONFIG_SYSCTL |
638 | extern ctl_table ipv6_route_table_template[]; |
639 | extern ctl_table ipv6_icmp_table_template[]; |
640 | |
641 | extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net); |
642 | extern struct ctl_table *ipv6_route_sysctl_init(struct net *net); |
643 | extern int ipv6_sysctl_register(void); |
644 | extern void ipv6_sysctl_unregister(void); |
645 | extern int ipv6_static_sysctl_register(void); |
646 | extern void ipv6_static_sysctl_unregister(void); |
647 | #endif |
648 | |
649 | #endif /* __KERNEL__ */ |
650 | #endif /* _NET_IPV6_H */ |
651 |
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