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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 | * | |
1da177e4 LT |
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> | |
08dcdbf6 | 18 | #include <linux/jhash.h> |
20283d84 | 19 | #include <net/if_inet6.h> |
1da177e4 LT |
20 | #include <net/ndisc.h> |
21 | #include <net/flow.h> | |
b73c3d0e | 22 | #include <net/flow_keys.h> |
1da177e4 LT |
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. */ | |
c12b395a | 39 | #define NEXTHDR_GRE 47 /* GRE header. */ |
1da177e4 LT |
40 | #define NEXTHDR_ESP 50 /* Encapsulating security payload. */ |
41 | #define NEXTHDR_AUTH 51 /* Authentication header. */ | |
42 | #define NEXTHDR_ICMP 58 /* ICMP for IPv6. */ | |
43 | #define NEXTHDR_NONE 59 /* No next header */ | |
44 | #define NEXTHDR_DEST 60 /* Destination options header. */ | |
280c571e | 45 | #define NEXTHDR_SCTP 132 /* SCTP message. */ |
2b741653 | 46 | #define NEXTHDR_MOBILITY 135 /* Mobility header. */ |
1da177e4 LT |
47 | |
48 | #define NEXTHDR_MAX 255 | |
49 | ||
50 | ||
51 | ||
52 | #define IPV6_DEFAULT_HOPLIMIT 64 | |
53 | #define IPV6_DEFAULT_MCASTHOPS 1 | |
54 | ||
55 | /* | |
56 | * Addr type | |
57 | * | |
58 | * type - unicast | multicast | |
59 | * scope - local | site | global | |
60 | * v4 - compat | |
61 | * v4mapped | |
62 | * any | |
63 | * loopback | |
64 | */ | |
65 | ||
66 | #define IPV6_ADDR_ANY 0x0000U | |
67 | ||
68 | #define IPV6_ADDR_UNICAST 0x0001U | |
69 | #define IPV6_ADDR_MULTICAST 0x0002U | |
70 | ||
71 | #define IPV6_ADDR_LOOPBACK 0x0010U | |
72 | #define IPV6_ADDR_LINKLOCAL 0x0020U | |
73 | #define IPV6_ADDR_SITELOCAL 0x0040U | |
74 | ||
75 | #define IPV6_ADDR_COMPATv4 0x0080U | |
76 | ||
77 | #define IPV6_ADDR_SCOPE_MASK 0x00f0U | |
78 | ||
79 | #define IPV6_ADDR_MAPPED 0x1000U | |
1da177e4 LT |
80 | |
81 | /* | |
82 | * Addr scopes | |
83 | */ | |
1da177e4 LT |
84 | #define IPV6_ADDR_MC_SCOPE(a) \ |
85 | ((a)->s6_addr[1] & 0x0f) /* nonstandard */ | |
86 | #define __IPV6_ADDR_SCOPE_INVALID -1 | |
1da177e4 LT |
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 | ||
5ced1339 LL |
93 | /* |
94 | * Addr flags | |
95 | */ | |
5ced1339 LL |
96 | #define IPV6_ADDR_MC_FLAG_TRANSIENT(a) \ |
97 | ((a)->s6_addr[1] & 0x10) | |
98 | #define IPV6_ADDR_MC_FLAG_PREFIX(a) \ | |
99 | ((a)->s6_addr[1] & 0x20) | |
100 | #define IPV6_ADDR_MC_FLAG_RENDEZVOUS(a) \ | |
101 | ((a)->s6_addr[1] & 0x40) | |
5ced1339 | 102 | |
1da177e4 LT |
103 | /* |
104 | * fragmentation header | |
105 | */ | |
106 | ||
107 | struct frag_hdr { | |
44473a6b AV |
108 | __u8 nexthdr; |
109 | __u8 reserved; | |
110 | __be16 frag_off; | |
111 | __be32 identification; | |
1da177e4 LT |
112 | }; |
113 | ||
1431fb31 PD |
114 | #define IP6_MF 0x0001 |
115 | #define IP6_OFFSET 0xFFF8 | |
1da177e4 | 116 | |
e110861f LC |
117 | #define IP6_REPLY_MARK(net, mark) \ |
118 | ((net)->ipv6.sysctl.fwmark_reflect ? (mark) : 0) | |
119 | ||
1da177e4 LT |
120 | #include <net/sock.h> |
121 | ||
122 | /* sysctls */ | |
1da177e4 | 123 | extern int sysctl_mld_max_msf; |
2f711939 | 124 | extern int sysctl_mld_qrv; |
3d7cc2ba | 125 | |
087fe240 | 126 | #define _DEVINC(net, statname, modifier, idev, field) \ |
14878f75 | 127 | ({ \ |
a11d206d YH |
128 | struct inet6_dev *_idev = (idev); \ |
129 | if (likely(_idev != NULL)) \ | |
14878f75 | 130 | SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \ |
9261e537 | 131 | SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\ |
a11d206d | 132 | }) |
14878f75 | 133 | |
be281e55 ED |
134 | /* per device counters are atomic_long_t */ |
135 | #define _DEVINCATOMIC(net, statname, modifier, idev, field) \ | |
136 | ({ \ | |
137 | struct inet6_dev *_idev = (idev); \ | |
138 | if (likely(_idev != NULL)) \ | |
139 | SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \ | |
140 | SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\ | |
141 | }) | |
142 | ||
2a24444f ED |
143 | /* per device and per net counters are atomic_long_t */ |
144 | #define _DEVINC_ATOMIC_ATOMIC(net, statname, idev, field) \ | |
145 | ({ \ | |
146 | struct inet6_dev *_idev = (idev); \ | |
147 | if (likely(_idev != NULL)) \ | |
148 | SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \ | |
149 | SNMP_INC_STATS_ATOMIC_LONG((net)->mib.statname##_statistics, (field));\ | |
150 | }) | |
151 | ||
087fe240 | 152 | #define _DEVADD(net, statname, modifier, idev, field, val) \ |
8e7999c4 PE |
153 | ({ \ |
154 | struct inet6_dev *_idev = (idev); \ | |
155 | if (likely(_idev != NULL)) \ | |
156 | SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \ | |
9261e537 | 157 | SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\ |
8e7999c4 PE |
158 | }) |
159 | ||
edf391ff NH |
160 | #define _DEVUPD(net, statname, modifier, idev, field, val) \ |
161 | ({ \ | |
162 | struct inet6_dev *_idev = (idev); \ | |
163 | if (likely(_idev != NULL)) \ | |
164 | SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \ | |
165 | SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\ | |
166 | }) | |
167 | ||
14878f75 | 168 | /* MIBs */ |
14878f75 | 169 | |
087fe240 | 170 | #define IP6_INC_STATS(net, idev,field) \ |
4ce3c183 | 171 | _DEVINC(net, ipv6, 64, idev, field) |
087fe240 | 172 | #define IP6_INC_STATS_BH(net, idev,field) \ |
4ce3c183 | 173 | _DEVINC(net, ipv6, 64_BH, idev, field) |
edf391ff | 174 | #define IP6_ADD_STATS(net, idev,field,val) \ |
4ce3c183 | 175 | _DEVADD(net, ipv6, 64, idev, field, val) |
087fe240 | 176 | #define IP6_ADD_STATS_BH(net, idev,field,val) \ |
4ce3c183 | 177 | _DEVADD(net, ipv6, 64_BH, idev, field, val) |
edf391ff | 178 | #define IP6_UPD_PO_STATS(net, idev,field,val) \ |
4ce3c183 | 179 | _DEVUPD(net, ipv6, 64, idev, field, val) |
edf391ff | 180 | #define IP6_UPD_PO_STATS_BH(net, idev,field,val) \ |
4ce3c183 | 181 | _DEVUPD(net, ipv6, 64_BH, idev, field, val) |
087fe240 | 182 | #define ICMP6_INC_STATS(net, idev, field) \ |
be281e55 | 183 | _DEVINCATOMIC(net, icmpv6, , idev, field) |
087fe240 | 184 | #define ICMP6_INC_STATS_BH(net, idev, field) \ |
be281e55 | 185 | _DEVINCATOMIC(net, icmpv6, _BH, idev, field) |
087fe240 DL |
186 | |
187 | #define ICMP6MSGOUT_INC_STATS(net, idev, field) \ | |
2a24444f | 188 | _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256) |
087fe240 | 189 | #define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \ |
2a24444f | 190 | _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256) |
087fe240 | 191 | #define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \ |
2a24444f | 192 | _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field) |
14878f75 | 193 | |
fd2c3ef7 | 194 | struct ip6_ra_chain { |
1da177e4 LT |
195 | struct ip6_ra_chain *next; |
196 | struct sock *sk; | |
197 | int sel; | |
198 | void (*destructor)(struct sock *); | |
199 | }; | |
200 | ||
201 | extern struct ip6_ra_chain *ip6_ra_chain; | |
202 | extern rwlock_t ip6_ra_lock; | |
203 | ||
204 | /* | |
205 | This structure is prepared by protocol, when parsing | |
206 | ancillary data and passed to IPv6. | |
207 | */ | |
208 | ||
fd2c3ef7 | 209 | struct ipv6_txoptions { |
1da177e4 LT |
210 | /* Length of this structure */ |
211 | int tot_len; | |
212 | ||
213 | /* length of extension headers */ | |
214 | ||
215 | __u16 opt_flen; /* after fragment hdr */ | |
216 | __u16 opt_nflen; /* before fragment hdr */ | |
217 | ||
218 | struct ipv6_opt_hdr *hopopt; | |
219 | struct ipv6_opt_hdr *dst0opt; | |
220 | struct ipv6_rt_hdr *srcrt; /* Routing Header */ | |
1da177e4 LT |
221 | struct ipv6_opt_hdr *dst1opt; |
222 | ||
223 | /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ | |
224 | }; | |
225 | ||
fd2c3ef7 | 226 | struct ip6_flowlabel { |
7f0e44ac | 227 | struct ip6_flowlabel __rcu *next; |
90bcaf7b | 228 | __be32 label; |
db3459d1 | 229 | atomic_t users; |
1da177e4 LT |
230 | struct in6_addr dst; |
231 | struct ipv6_txoptions *opt; | |
1da177e4 | 232 | unsigned long linger; |
d3aedd5e | 233 | struct rcu_head rcu; |
1da177e4 | 234 | u8 share; |
4f82f457 EB |
235 | union { |
236 | struct pid *pid; | |
237 | kuid_t uid; | |
238 | } owner; | |
1da177e4 LT |
239 | unsigned long lastuse; |
240 | unsigned long expires; | |
60e8fbc4 | 241 | struct net *fl_net; |
1da177e4 LT |
242 | }; |
243 | ||
f3a7c66b HH |
244 | #define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF) |
245 | #define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF) | |
37cfee90 | 246 | #define IPV6_TCLASS_MASK (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK) |
d76ed22b | 247 | #define IPV6_TCLASS_SHIFT 20 |
1da177e4 | 248 | |
fd2c3ef7 | 249 | struct ipv6_fl_socklist { |
7f0e44ac ED |
250 | struct ipv6_fl_socklist __rcu *next; |
251 | struct ip6_flowlabel *fl; | |
252 | struct rcu_head rcu; | |
1da177e4 LT |
253 | }; |
254 | ||
5c3a0fd7 JP |
255 | struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); |
256 | struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space, | |
257 | struct ip6_flowlabel *fl, | |
258 | struct ipv6_txoptions *fopt); | |
259 | void fl6_free_socklist(struct sock *sk); | |
260 | int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen); | |
46e5f401 FF |
261 | int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq, |
262 | int flags); | |
5c3a0fd7 JP |
263 | int ip6_flowlabel_init(void); |
264 | void ip6_flowlabel_cleanup(void); | |
1da177e4 LT |
265 | |
266 | static inline void fl6_sock_release(struct ip6_flowlabel *fl) | |
267 | { | |
268 | if (fl) | |
269 | atomic_dec(&fl->users); | |
270 | } | |
271 | ||
5c3a0fd7 | 272 | void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info); |
b94f1c09 | 273 | |
6d0bfe22 LC |
274 | int icmpv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6, |
275 | struct icmp6hdr *thdr, int len); | |
276 | ||
5c3a0fd7 | 277 | int ip6_ra_control(struct sock *sk, int sel); |
1da177e4 | 278 | |
5c3a0fd7 | 279 | int ipv6_parse_hopopts(struct sk_buff *skb); |
1da177e4 | 280 | |
5c3a0fd7 JP |
281 | struct ipv6_txoptions *ipv6_dup_options(struct sock *sk, |
282 | struct ipv6_txoptions *opt); | |
283 | struct ipv6_txoptions *ipv6_renew_options(struct sock *sk, | |
284 | struct ipv6_txoptions *opt, | |
285 | int newtype, | |
286 | struct ipv6_opt_hdr __user *newopt, | |
287 | int newoptlen); | |
df9890c3 YH |
288 | struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, |
289 | struct ipv6_txoptions *opt); | |
1da177e4 | 290 | |
5c3a0fd7 | 291 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb); |
399c07de | 292 | |
aeaf6e9d SL |
293 | static inline bool ipv6_accept_ra(struct inet6_dev *idev) |
294 | { | |
295 | /* If forwarding is enabled, RA are not accepted unless the special | |
296 | * hybrid mode (accept_ra=2) is enabled. | |
297 | */ | |
298 | return idev->cnf.forwarding ? idev->cnf.accept_ra == 2 : | |
299 | idev->cnf.accept_ra; | |
300 | } | |
301 | ||
d4915c08 | 302 | #if IS_ENABLED(CONFIG_IPV6) |
d4915c08 AW |
303 | static inline int ip6_frag_mem(struct net *net) |
304 | { | |
d433673e | 305 | return sum_frag_mem_limit(&net->ipv6.frags); |
d4915c08 AW |
306 | } |
307 | #endif | |
1da177e4 | 308 | |
c2a93660 JDB |
309 | #define IPV6_FRAG_HIGH_THRESH (4 * 1024*1024) /* 4194304 */ |
310 | #define IPV6_FRAG_LOW_THRESH (3 * 1024*1024) /* 3145728 */ | |
9874c41c | 311 | #define IPV6_FRAG_TIMEOUT (60 * HZ) /* 60 seconds */ |
1da177e4 | 312 | |
5c3a0fd7 | 313 | int __ipv6_addr_type(const struct in6_addr *addr); |
b1cacb68 YH |
314 | static inline int ipv6_addr_type(const struct in6_addr *addr) |
315 | { | |
316 | return __ipv6_addr_type(addr) & 0xffff; | |
317 | } | |
1da177e4 LT |
318 | |
319 | static inline int ipv6_addr_scope(const struct in6_addr *addr) | |
320 | { | |
b1cacb68 YH |
321 | return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK; |
322 | } | |
323 | ||
324 | static inline int __ipv6_addr_src_scope(int type) | |
325 | { | |
a02cec21 | 326 | return (type == IPV6_ADDR_ANY) ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16); |
b1cacb68 YH |
327 | } |
328 | ||
329 | static inline int ipv6_addr_src_scope(const struct in6_addr *addr) | |
330 | { | |
331 | return __ipv6_addr_src_scope(__ipv6_addr_type(addr)); | |
1da177e4 LT |
332 | } |
333 | ||
b7ef213e HFS |
334 | static inline bool __ipv6_addr_needs_scope_id(int type) |
335 | { | |
336 | return type & IPV6_ADDR_LINKLOCAL || | |
337 | (type & IPV6_ADDR_MULTICAST && | |
338 | (type & (IPV6_ADDR_LOOPBACK|IPV6_ADDR_LINKLOCAL))); | |
339 | } | |
340 | ||
341 | static inline __u32 ipv6_iface_scope_id(const struct in6_addr *addr, int iface) | |
342 | { | |
343 | return __ipv6_addr_needs_scope_id(__ipv6_addr_type(addr)) ? iface : 0; | |
344 | } | |
345 | ||
1da177e4 LT |
346 | static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2) |
347 | { | |
db3459d1 | 348 | return memcmp(a1, a2, sizeof(struct in6_addr)); |
1da177e4 LT |
349 | } |
350 | ||
1a203cb3 | 351 | static inline bool |
f2ffd9ee PM |
352 | ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, |
353 | const struct in6_addr *a2) | |
354 | { | |
1a203cb3 ED |
355 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
356 | const unsigned long *ul1 = (const unsigned long *)a1; | |
357 | const unsigned long *ulm = (const unsigned long *)m; | |
358 | const unsigned long *ul2 = (const unsigned long *)a2; | |
359 | ||
360 | return !!(((ul1[0] ^ ul2[0]) & ulm[0]) | | |
361 | ((ul1[1] ^ ul2[1]) & ulm[1])); | |
362 | #else | |
a02cec21 ED |
363 | return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) | |
364 | ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) | | |
365 | ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) | | |
366 | ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])); | |
1a203cb3 | 367 | #endif |
f2ffd9ee PM |
368 | } |
369 | ||
1da177e4 LT |
370 | static inline void ipv6_addr_prefix(struct in6_addr *pfx, |
371 | const struct in6_addr *addr, | |
372 | int plen) | |
373 | { | |
374 | /* caller must guarantee 0 <= plen <= 128 */ | |
375 | int o = plen >> 3, | |
376 | b = plen & 0x7; | |
377 | ||
db3459d1 | 378 | memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr)); |
1da177e4 | 379 | memcpy(pfx->s6_addr, addr, o); |
db3459d1 | 380 | if (b != 0) |
1da177e4 | 381 | pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); |
1da177e4 LT |
382 | } |
383 | ||
5206c579 YH |
384 | static inline void __ipv6_addr_set_half(__be32 *addr, |
385 | __be32 wh, __be32 wl) | |
386 | { | |
387 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 | |
388 | #if defined(__BIG_ENDIAN) | |
389 | if (__builtin_constant_p(wh) && __builtin_constant_p(wl)) { | |
390 | *(__force u64 *)addr = ((__force u64)(wh) << 32 | (__force u64)(wl)); | |
391 | return; | |
392 | } | |
393 | #elif defined(__LITTLE_ENDIAN) | |
394 | if (__builtin_constant_p(wl) && __builtin_constant_p(wh)) { | |
395 | *(__force u64 *)addr = ((__force u64)(wl) << 32 | (__force u64)(wh)); | |
396 | return; | |
397 | } | |
398 | #endif | |
399 | #endif | |
400 | addr[0] = wh; | |
401 | addr[1] = wl; | |
402 | } | |
403 | ||
1da177e4 | 404 | static inline void ipv6_addr_set(struct in6_addr *addr, |
48818f82 AV |
405 | __be32 w1, __be32 w2, |
406 | __be32 w3, __be32 w4) | |
1da177e4 | 407 | { |
5206c579 YH |
408 | __ipv6_addr_set_half(&addr->s6_addr32[0], w1, w2); |
409 | __ipv6_addr_set_half(&addr->s6_addr32[2], w3, w4); | |
1da177e4 | 410 | } |
1da177e4 | 411 | |
92113bfd ED |
412 | static inline bool ipv6_addr_equal(const struct in6_addr *a1, |
413 | const struct in6_addr *a2) | |
1da177e4 | 414 | { |
1a203cb3 ED |
415 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
416 | const unsigned long *ul1 = (const unsigned long *)a1; | |
417 | const unsigned long *ul2 = (const unsigned long *)a2; | |
418 | ||
419 | return ((ul1[0] ^ ul2[0]) | (ul1[1] ^ ul2[1])) == 0UL; | |
420 | #else | |
a02cec21 ED |
421 | return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) | |
422 | (a1->s6_addr32[1] ^ a2->s6_addr32[1]) | | |
423 | (a1->s6_addr32[2] ^ a2->s6_addr32[2]) | | |
424 | (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0; | |
1a203cb3 | 425 | #endif |
1da177e4 LT |
426 | } |
427 | ||
38675170 YH |
428 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
429 | static inline bool __ipv6_prefix_equal64_half(const __be64 *a1, | |
430 | const __be64 *a2, | |
431 | unsigned int len) | |
432 | { | |
512613d7 | 433 | if (len && ((*a1 ^ *a2) & cpu_to_be64((~0UL) << (64 - len)))) |
38675170 YH |
434 | return false; |
435 | return true; | |
436 | } | |
437 | ||
438 | static inline bool ipv6_prefix_equal(const struct in6_addr *addr1, | |
439 | const struct in6_addr *addr2, | |
440 | unsigned int prefixlen) | |
441 | { | |
442 | const __be64 *a1 = (const __be64 *)addr1; | |
443 | const __be64 *a2 = (const __be64 *)addr2; | |
444 | ||
445 | if (prefixlen >= 64) { | |
446 | if (a1[0] ^ a2[0]) | |
447 | return false; | |
448 | return __ipv6_prefix_equal64_half(a1 + 1, a2 + 1, prefixlen - 64); | |
449 | } | |
450 | return __ipv6_prefix_equal64_half(a1, a2, prefixlen); | |
451 | } | |
452 | #else | |
2ef97332 YH |
453 | static inline bool ipv6_prefix_equal(const struct in6_addr *addr1, |
454 | const struct in6_addr *addr2, | |
455 | unsigned int prefixlen) | |
1da177e4 | 456 | { |
2ef97332 YH |
457 | const __be32 *a1 = addr1->s6_addr32; |
458 | const __be32 *a2 = addr2->s6_addr32; | |
95c96174 | 459 | unsigned int pdw, pbi; |
1da177e4 LT |
460 | |
461 | /* check complete u32 in prefix */ | |
462 | pdw = prefixlen >> 5; | |
463 | if (pdw && memcmp(a1, a2, pdw << 2)) | |
92113bfd | 464 | return false; |
1da177e4 LT |
465 | |
466 | /* check incomplete u32 in prefix */ | |
467 | pbi = prefixlen & 0x1f; | |
468 | if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi)))) | |
92113bfd | 469 | return false; |
1da177e4 | 470 | |
92113bfd | 471 | return true; |
1da177e4 | 472 | } |
38675170 | 473 | #endif |
1da177e4 | 474 | |
2588fe1d | 475 | struct inet_frag_queue; |
2588fe1d | 476 | |
0b5ccb2e PM |
477 | enum ip6_defrag_users { |
478 | IP6_DEFRAG_LOCAL_DELIVER, | |
479 | IP6_DEFRAG_CONNTRACK_IN, | |
4be929be | 480 | __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHRT_MAX, |
0b5ccb2e | 481 | IP6_DEFRAG_CONNTRACK_OUT, |
4be929be | 482 | __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHRT_MAX, |
8fa9ff68 | 483 | IP6_DEFRAG_CONNTRACK_BRIDGE_IN, |
4be929be | 484 | __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX, |
0b5ccb2e PM |
485 | }; |
486 | ||
c6fda282 PE |
487 | struct ip6_create_arg { |
488 | __be32 id; | |
0b5ccb2e | 489 | u32 user; |
b71d1d42 ED |
490 | const struct in6_addr *src; |
491 | const struct in6_addr *dst; | |
eec2e618 | 492 | u8 ecn; |
c6fda282 PE |
493 | }; |
494 | ||
36c77782 FW |
495 | void ip6_frag_init(struct inet_frag_queue *q, const void *a); |
496 | bool ip6_frag_match(const struct inet_frag_queue *q, const void *a); | |
c6fda282 | 497 | |
b836c99f AW |
498 | /* |
499 | * Equivalent of ipv4 struct ip | |
500 | */ | |
501 | struct frag_queue { | |
502 | struct inet_frag_queue q; | |
503 | ||
504 | __be32 id; /* fragment id */ | |
505 | u32 user; | |
506 | struct in6_addr saddr; | |
507 | struct in6_addr daddr; | |
508 | ||
509 | int iif; | |
510 | unsigned int csum; | |
511 | __u16 nhoffset; | |
eec2e618 | 512 | u8 ecn; |
b836c99f AW |
513 | }; |
514 | ||
515 | void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq, | |
516 | struct inet_frags *frags); | |
517 | ||
92113bfd | 518 | static inline bool ipv6_addr_any(const struct in6_addr *a) |
1da177e4 | 519 | { |
1a203cb3 ED |
520 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
521 | const unsigned long *ul = (const unsigned long *)a; | |
522 | ||
523 | return (ul[0] | ul[1]) == 0UL; | |
524 | #else | |
a02cec21 ED |
525 | return (a->s6_addr32[0] | a->s6_addr32[1] | |
526 | a->s6_addr32[2] | a->s6_addr32[3]) == 0; | |
1a203cb3 | 527 | #endif |
1da177e4 LT |
528 | } |
529 | ||
ddbe5032 ED |
530 | static inline u32 ipv6_addr_hash(const struct in6_addr *a) |
531 | { | |
532 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 | |
533 | const unsigned long *ul = (const unsigned long *)a; | |
534 | unsigned long x = ul[0] ^ ul[1]; | |
535 | ||
536 | return (u32)(x ^ (x >> 32)); | |
537 | #else | |
538 | return (__force u32)(a->s6_addr32[0] ^ a->s6_addr32[1] ^ | |
539 | a->s6_addr32[2] ^ a->s6_addr32[3]); | |
540 | #endif | |
541 | } | |
542 | ||
08dcdbf6 | 543 | /* more secured version of ipv6_addr_hash() */ |
b50026b5 | 544 | static inline u32 __ipv6_addr_jhash(const struct in6_addr *a, const u32 initval) |
08dcdbf6 ED |
545 | { |
546 | u32 v = (__force u32)a->s6_addr32[0] ^ (__force u32)a->s6_addr32[1]; | |
547 | ||
548 | return jhash_3words(v, | |
549 | (__force u32)a->s6_addr32[2], | |
550 | (__force u32)a->s6_addr32[3], | |
b50026b5 | 551 | initval); |
08dcdbf6 ED |
552 | } |
553 | ||
92113bfd | 554 | static inline bool ipv6_addr_loopback(const struct in6_addr *a) |
f630e43a | 555 | { |
e287656b | 556 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
1373a773 | 557 | const __be64 *be = (const __be64 *)a; |
e287656b | 558 | |
1373a773 | 559 | return (be[0] | (be[1] ^ cpu_to_be64(1))) == 0UL; |
e287656b | 560 | #else |
a02cec21 | 561 | return (a->s6_addr32[0] | a->s6_addr32[1] | |
1373a773 | 562 | a->s6_addr32[2] | (a->s6_addr32[3] ^ cpu_to_be32(1))) == 0; |
e287656b | 563 | #endif |
f630e43a YH |
564 | } |
565 | ||
1373a773 JL |
566 | /* |
567 | * Note that we must __force cast these to unsigned long to make sparse happy, | |
568 | * since all of the endian-annotated types are fixed size regardless of arch. | |
569 | */ | |
92113bfd | 570 | static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) |
e773e4fa | 571 | { |
a04d40b8 YH |
572 | return ( |
573 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 | |
1373a773 | 574 | *(unsigned long *)a | |
a04d40b8 | 575 | #else |
1373a773 | 576 | (__force unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | |
a04d40b8 | 577 | #endif |
1373a773 JL |
578 | (__force unsigned long)(a->s6_addr32[2] ^ |
579 | cpu_to_be32(0x0000ffff))) == 0UL; | |
e773e4fa BH |
580 | } |
581 | ||
99cd07a5 JMT |
582 | /* |
583 | * Check for a RFC 4843 ORCHID address | |
584 | * (Overlay Routable Cryptographic Hash Identifiers) | |
585 | */ | |
92113bfd | 586 | static inline bool ipv6_addr_orchid(const struct in6_addr *a) |
99cd07a5 | 587 | { |
a02cec21 | 588 | return (a->s6_addr32[0] & htonl(0xfffffff0)) == htonl(0x20010010); |
99cd07a5 JMT |
589 | } |
590 | ||
5c98631c LC |
591 | static inline bool ipv6_addr_is_multicast(const struct in6_addr *addr) |
592 | { | |
593 | return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000); | |
594 | } | |
595 | ||
f15364bd AC |
596 | static inline void ipv6_addr_set_v4mapped(const __be32 addr, |
597 | struct in6_addr *v4mapped) | |
598 | { | |
599 | ipv6_addr_set(v4mapped, | |
600 | 0, 0, | |
601 | htonl(0x0000FFFF), | |
602 | addr); | |
603 | } | |
604 | ||
971f359d YH |
605 | /* |
606 | * find the first different bit between two addresses | |
607 | * length of address must be a multiple of 32bits | |
608 | */ | |
9f2e7334 | 609 | static inline int __ipv6_addr_diff32(const void *token1, const void *token2, int addrlen) |
971f359d | 610 | { |
ef296f56 | 611 | const __be32 *a1 = token1, *a2 = token2; |
971f359d YH |
612 | int i; |
613 | ||
614 | addrlen >>= 2; | |
615 | ||
616 | for (i = 0; i < addrlen; i++) { | |
ef296f56 AV |
617 | __be32 xb = a1[i] ^ a2[i]; |
618 | if (xb) | |
d57b8fb8 | 619 | return i * 32 + 31 - __fls(ntohl(xb)); |
971f359d YH |
620 | } |
621 | ||
622 | /* | |
623 | * we should *never* get to this point since that | |
624 | * would mean the addrs are equal | |
625 | * | |
626 | * However, we do get to it 8) And exacly, when | |
627 | * addresses are equal 8) | |
628 | * | |
629 | * ip route add 1111::/128 via ... | |
630 | * ip route add 1111::/64 via ... | |
631 | * and we are here. | |
632 | * | |
633 | * Ideally, this function should stop comparison | |
634 | * at prefix length. It does not, but it is still OK, | |
635 | * if returned value is greater than prefix length. | |
636 | * --ANK (980803) | |
637 | */ | |
a02cec21 | 638 | return addrlen << 5; |
971f359d YH |
639 | } |
640 | ||
9f2e7334 YH |
641 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
642 | static inline int __ipv6_addr_diff64(const void *token1, const void *token2, int addrlen) | |
643 | { | |
644 | const __be64 *a1 = token1, *a2 = token2; | |
645 | int i; | |
646 | ||
647 | addrlen >>= 3; | |
648 | ||
649 | for (i = 0; i < addrlen; i++) { | |
650 | __be64 xb = a1[i] ^ a2[i]; | |
651 | if (xb) | |
652 | return i * 64 + 63 - __fls(be64_to_cpu(xb)); | |
653 | } | |
654 | ||
655 | return addrlen << 6; | |
656 | } | |
657 | #endif | |
658 | ||
659 | static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen) | |
660 | { | |
661 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 | |
662 | if (__builtin_constant_p(addrlen) && !(addrlen & 7)) | |
663 | return __ipv6_addr_diff64(token1, token2, addrlen); | |
664 | #endif | |
665 | return __ipv6_addr_diff32(token1, token2, addrlen); | |
666 | } | |
667 | ||
971f359d YH |
668 | static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2) |
669 | { | |
670 | return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); | |
671 | } | |
672 | ||
5c3a0fd7 | 673 | int ip6_dst_hoplimit(struct dst_entry *dst); |
3ce9b35f | 674 | |
5c98631c LC |
675 | static inline int ip6_sk_dst_hoplimit(struct ipv6_pinfo *np, struct flowi6 *fl6, |
676 | struct dst_entry *dst) | |
677 | { | |
678 | int hlimit; | |
679 | ||
680 | if (ipv6_addr_is_multicast(&fl6->daddr)) | |
681 | hlimit = np->mcast_hops; | |
682 | else | |
683 | hlimit = np->hop_limit; | |
684 | if (hlimit < 0) | |
685 | hlimit = ip6_dst_hoplimit(dst); | |
686 | return hlimit; | |
687 | } | |
688 | ||
a37934fc | 689 | #if IS_ENABLED(CONFIG_IPV6) |
b73c3d0e TH |
690 | static inline void ip6_set_txhash(struct sock *sk) |
691 | { | |
692 | struct inet_sock *inet = inet_sk(sk); | |
693 | struct ipv6_pinfo *np = inet6_sk(sk); | |
694 | struct flow_keys keys; | |
695 | ||
696 | keys.src = (__force __be32)ipv6_addr_hash(&np->saddr); | |
697 | keys.dst = (__force __be32)ipv6_addr_hash(&sk->sk_v6_daddr); | |
698 | keys.port16[0] = inet->inet_sport; | |
699 | keys.port16[1] = inet->inet_dport; | |
700 | ||
701 | sk->sk_txhash = flow_hash_from_keys(&keys); | |
702 | } | |
703 | ||
cb1ce2ef TH |
704 | static inline __be32 ip6_make_flowlabel(struct net *net, struct sk_buff *skb, |
705 | __be32 flowlabel, bool autolabel) | |
706 | { | |
707 | if (!flowlabel && (autolabel || net->ipv6.sysctl.auto_flowlabels)) { | |
708 | __be32 hash; | |
709 | ||
710 | hash = skb_get_hash(skb); | |
711 | ||
712 | /* Since this is being sent on the wire obfuscate hash a bit | |
713 | * to minimize possbility that any useful information to an | |
714 | * attacker is leaked. Only lower 20 bits are relevant. | |
715 | */ | |
716 | hash ^= hash >> 12; | |
717 | ||
718 | flowlabel = hash & IPV6_FLOWLABEL_MASK; | |
719 | } | |
720 | ||
721 | return flowlabel; | |
722 | } | |
a37934fc FF |
723 | #else |
724 | static inline void ip6_set_txhash(struct sock *sk) { } | |
725 | static inline __be32 ip6_make_flowlabel(struct net *net, struct sk_buff *skb, | |
726 | __be32 flowlabel, bool autolabel) | |
727 | { | |
728 | return flowlabel; | |
729 | } | |
730 | #endif | |
731 | ||
cb1ce2ef | 732 | |
3e4e4c1f YH |
733 | /* |
734 | * Header manipulation | |
735 | */ | |
736 | static inline void ip6_flow_hdr(struct ipv6hdr *hdr, unsigned int tclass, | |
737 | __be32 flowlabel) | |
738 | { | |
07f623d3 | 739 | *(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | flowlabel; |
3e4e4c1f YH |
740 | } |
741 | ||
6502ca52 YH |
742 | static inline __be32 ip6_flowinfo(const struct ipv6hdr *hdr) |
743 | { | |
744 | return *(__be32 *)hdr & IPV6_FLOWINFO_MASK; | |
745 | } | |
746 | ||
3308de2b FF |
747 | static inline __be32 ip6_flowlabel(const struct ipv6hdr *hdr) |
748 | { | |
749 | return *(__be32 *)hdr & IPV6_FLOWLABEL_MASK; | |
750 | } | |
751 | ||
d76ed22b LR |
752 | static inline u8 ip6_tclass(__be32 flowinfo) |
753 | { | |
754 | return ntohl(flowinfo & IPV6_TCLASS_MASK) >> IPV6_TCLASS_SHIFT; | |
755 | } | |
1da177e4 LT |
756 | /* |
757 | * Prototypes exported by ipv6 | |
758 | */ | |
759 | ||
760 | /* | |
761 | * rcv function (called from netdevice level) | |
762 | */ | |
763 | ||
5c3a0fd7 JP |
764 | int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, |
765 | struct packet_type *pt, struct net_device *orig_dev); | |
1da177e4 | 766 | |
5c3a0fd7 | 767 | int ip6_rcv_finish(struct sk_buff *skb); |
b05e1066 | 768 | |
1da177e4 LT |
769 | /* |
770 | * upper-layer output functions | |
771 | */ | |
5c3a0fd7 JP |
772 | int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, |
773 | struct ipv6_txoptions *opt, int tclass); | |
774 | ||
775 | int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr); | |
776 | ||
777 | int ip6_append_data(struct sock *sk, | |
778 | int getfrag(void *from, char *to, int offset, int len, | |
779 | int odd, struct sk_buff *skb), | |
780 | void *from, int length, int transhdrlen, int hlimit, | |
781 | int tclass, struct ipv6_txoptions *opt, struct flowi6 *fl6, | |
782 | struct rt6_info *rt, unsigned int flags, int dontfrag); | |
783 | ||
784 | int ip6_push_pending_frames(struct sock *sk); | |
785 | ||
786 | void ip6_flush_pending_frames(struct sock *sk); | |
787 | ||
788 | int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6); | |
789 | struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6, | |
0e0d44ab | 790 | const struct in6_addr *final_dst); |
5c3a0fd7 | 791 | struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6, |
0e0d44ab | 792 | const struct in6_addr *final_dst); |
5c3a0fd7 JP |
793 | struct dst_entry *ip6_blackhole_route(struct net *net, |
794 | struct dst_entry *orig_dst); | |
1da177e4 LT |
795 | |
796 | /* | |
797 | * skb processing functions | |
798 | */ | |
799 | ||
aad88724 | 800 | int ip6_output(struct sock *sk, struct sk_buff *skb); |
5c3a0fd7 JP |
801 | int ip6_forward(struct sk_buff *skb); |
802 | int ip6_input(struct sk_buff *skb); | |
803 | int ip6_mc_input(struct sk_buff *skb); | |
1da177e4 | 804 | |
5c3a0fd7 JP |
805 | int __ip6_local_out(struct sk_buff *skb); |
806 | int ip6_local_out(struct sk_buff *skb); | |
ef76bc23 | 807 | |
1da177e4 LT |
808 | /* |
809 | * Extension header (options) processing | |
810 | */ | |
811 | ||
5c3a0fd7 JP |
812 | void ipv6_push_nfrag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt, |
813 | u8 *proto, struct in6_addr **daddr_p); | |
814 | void ipv6_push_frag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt, | |
815 | u8 *proto); | |
1da177e4 | 816 | |
5c3a0fd7 JP |
817 | int ipv6_skip_exthdr(const struct sk_buff *, int start, u8 *nexthdrp, |
818 | __be16 *frag_offp); | |
1da177e4 | 819 | |
5c3a0fd7 | 820 | bool ipv6_ext_hdr(u8 nexthdr); |
1da177e4 | 821 | |
f8f62675 | 822 | enum { |
9195bb8e AA |
823 | IP6_FH_F_FRAG = (1 << 0), |
824 | IP6_FH_F_AUTH = (1 << 1), | |
825 | IP6_FH_F_SKIP_RH = (1 << 2), | |
f8f62675 JG |
826 | }; |
827 | ||
828 | /* find specified header and get offset to it */ | |
5c3a0fd7 JP |
829 | int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset, int target, |
830 | unsigned short *fragoff, int *fragflg); | |
f8f62675 | 831 | |
5c3a0fd7 | 832 | int ipv6_find_tlv(struct sk_buff *skb, int offset, int type); |
c61a4043 | 833 | |
5c3a0fd7 JP |
834 | struct in6_addr *fl6_update_dst(struct flowi6 *fl6, |
835 | const struct ipv6_txoptions *opt, | |
836 | struct in6_addr *orig); | |
20c59de2 | 837 | |
1da177e4 LT |
838 | /* |
839 | * socket options (ipv6_sockglue.c) | |
840 | */ | |
841 | ||
5c3a0fd7 JP |
842 | int ipv6_setsockopt(struct sock *sk, int level, int optname, |
843 | char __user *optval, unsigned int optlen); | |
844 | int ipv6_getsockopt(struct sock *sk, int level, int optname, | |
845 | char __user *optval, int __user *optlen); | |
846 | int compat_ipv6_setsockopt(struct sock *sk, int level, int optname, | |
847 | char __user *optval, unsigned int optlen); | |
848 | int compat_ipv6_getsockopt(struct sock *sk, int level, int optname, | |
849 | char __user *optval, int __user *optlen); | |
850 | ||
851 | int ip6_datagram_connect(struct sock *sk, struct sockaddr *addr, int addr_len); | |
82b276cd HFS |
852 | int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *addr, |
853 | int addr_len); | |
5c3a0fd7 | 854 | |
85fbaa75 HFS |
855 | int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, |
856 | int *addr_len); | |
857 | int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len, | |
858 | int *addr_len); | |
5c3a0fd7 JP |
859 | void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port, |
860 | u32 info, u8 *payload); | |
861 | void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info); | |
862 | void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu); | |
863 | ||
864 | int inet6_release(struct socket *sock); | |
865 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len); | |
866 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, | |
867 | int peer); | |
868 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); | |
869 | ||
870 | int inet6_hash_connect(struct inet_timewait_death_row *death_row, | |
d8313f5c ACM |
871 | struct sock *sk); |
872 | ||
1da177e4 LT |
873 | /* |
874 | * reassembly.c | |
875 | */ | |
90ddc4f0 ED |
876 | extern const struct proto_ops inet6_stream_ops; |
877 | extern const struct proto_ops inet6_dgram_ops; | |
20380731 | 878 | |
14c85021 ACM |
879 | struct group_source_req; |
880 | struct group_filter; | |
881 | ||
5c3a0fd7 JP |
882 | int ip6_mc_source(int add, int omode, struct sock *sk, |
883 | struct group_source_req *pgsr); | |
884 | int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf); | |
885 | int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf, | |
886 | struct group_filter __user *optval, int __user *optlen); | |
20380731 ACM |
887 | |
888 | #ifdef CONFIG_PROC_FS | |
5c3a0fd7 JP |
889 | int ac6_proc_init(struct net *net); |
890 | void ac6_proc_exit(struct net *net); | |
891 | int raw6_proc_init(void); | |
892 | void raw6_proc_exit(void); | |
893 | int tcp6_proc_init(struct net *net); | |
894 | void tcp6_proc_exit(struct net *net); | |
895 | int udp6_proc_init(struct net *net); | |
896 | void udp6_proc_exit(struct net *net); | |
897 | int udplite6_proc_init(void); | |
898 | void udplite6_proc_exit(void); | |
899 | int ipv6_misc_proc_init(void); | |
900 | void ipv6_misc_proc_exit(void); | |
901 | int snmp6_register_dev(struct inet6_dev *idev); | |
902 | int snmp6_unregister_dev(struct inet6_dev *idev); | |
20380731 | 903 | |
7f7d9a6b | 904 | #else |
6ab57e7e DL |
905 | static inline int ac6_proc_init(struct net *net) { return 0; } |
906 | static inline void ac6_proc_exit(struct net *net) { } | |
907 | static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; } | |
908 | static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; } | |
20380731 | 909 | #endif |
1da177e4 | 910 | |
20380731 | 911 | #ifdef CONFIG_SYSCTL |
9e8cda3b | 912 | extern struct ctl_table ipv6_route_table_template[]; |
1da177e4 | 913 | |
5c3a0fd7 JP |
914 | struct ctl_table *ipv6_icmp_sysctl_init(struct net *net); |
915 | struct ctl_table *ipv6_route_sysctl_init(struct net *net); | |
916 | int ipv6_sysctl_register(void); | |
917 | void ipv6_sysctl_unregister(void); | |
20380731 | 918 | #endif |
1da177e4 | 919 | |
20380731 | 920 | #endif /* _NET_IPV6_H */ |