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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * PF_INET6 socket protocol family | |
1ab1457c | 3 | * Linux INET6 implementation |
1da177e4 LT |
4 | * |
5 | * Authors: | |
1ab1457c | 6 | * Pedro Roque <roque@di.fc.ul.pt> |
1da177e4 LT |
7 | * |
8 | * Adapted from linux/net/ipv4/af_inet.c | |
9 | * | |
67ba4152 | 10 | * Fixes: |
1da177e4 | 11 | * piggy, Karl Knutson : Socket protocol table |
67ba4152 IM |
12 | * Hideaki YOSHIFUJI : sin6_scope_id support |
13 | * Arnaldo Melo : check proc_net_create return, cleanups | |
1da177e4 LT |
14 | * |
15 | * This program is free software; you can redistribute it and/or | |
67ba4152 IM |
16 | * modify it under the terms of the GNU General Public License |
17 | * as published by the Free Software Foundation; either version | |
18 | * 2 of the License, or (at your option) any later version. | |
1da177e4 LT |
19 | */ |
20 | ||
f3213831 | 21 | #define pr_fmt(fmt) "IPv6: " fmt |
1da177e4 LT |
22 | |
23 | #include <linux/module.h> | |
4fc268d2 | 24 | #include <linux/capability.h> |
1da177e4 LT |
25 | #include <linux/errno.h> |
26 | #include <linux/types.h> | |
27 | #include <linux/socket.h> | |
28 | #include <linux/in.h> | |
29 | #include <linux/kernel.h> | |
1da177e4 LT |
30 | #include <linux/timer.h> |
31 | #include <linux/string.h> | |
32 | #include <linux/sockios.h> | |
33 | #include <linux/net.h> | |
34 | #include <linux/fcntl.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/proc_fs.h> | |
38 | #include <linux/stat.h> | |
39 | #include <linux/init.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
1da177e4 LT |
41 | |
42 | #include <linux/inet.h> | |
43 | #include <linux/netdevice.h> | |
44 | #include <linux/icmpv6.h> | |
2cc7d573 | 45 | #include <linux/netfilter_ipv6.h> |
1da177e4 LT |
46 | |
47 | #include <net/ip.h> | |
48 | #include <net/ipv6.h> | |
49 | #include <net/udp.h> | |
ba4e58ec | 50 | #include <net/udplite.h> |
1da177e4 | 51 | #include <net/tcp.h> |
6d0bfe22 | 52 | #include <net/ping.h> |
1da177e4 LT |
53 | #include <net/protocol.h> |
54 | #include <net/inet_common.h> | |
1668e010 | 55 | #include <net/route.h> |
1da177e4 LT |
56 | #include <net/transp_v6.h> |
57 | #include <net/ip6_route.h> | |
58 | #include <net/addrconf.h> | |
f564f45c | 59 | #include <net/ndisc.h> |
1da177e4 LT |
60 | #ifdef CONFIG_IPV6_TUNNEL |
61 | #include <net/ip6_tunnel.h> | |
62 | #endif | |
cb72d382 | 63 | #include <net/calipso.h> |
915d7e5e | 64 | #include <net/seg6.h> |
1da177e4 | 65 | |
7c0f6ba6 | 66 | #include <linux/uaccess.h> |
7bc570c8 | 67 | #include <linux/mroute6.h> |
1da177e4 | 68 | |
a6024562 TH |
69 | #include "ip6_offload.h" |
70 | ||
1da177e4 LT |
71 | MODULE_AUTHOR("Cast of dozens"); |
72 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
73 | MODULE_LICENSE("GPL"); | |
74 | ||
f1267347 | 75 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
76 | * build a new socket. |
77 | */ | |
78 | static struct list_head inetsw6[SOCK_MAX]; | |
79 | static DEFINE_SPINLOCK(inetsw6_lock); | |
80 | ||
56d417b1 BH |
81 | struct ipv6_params ipv6_defaults = { |
82 | .disable_ipv6 = 0, | |
83 | .autoconf = 1, | |
84 | }; | |
85 | ||
647c0c70 | 86 | static int disable_ipv6_mod; |
56d417b1 BH |
87 | |
88 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
89 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
90 | ||
91 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
92 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
93 | ||
94 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
95 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 96 | |
e4348637 DA |
97 | bool ipv6_mod_enabled(void) |
98 | { | |
99 | return disable_ipv6_mod == 0; | |
100 | } | |
101 | EXPORT_SYMBOL_GPL(ipv6_mod_enabled); | |
102 | ||
1da177e4 LT |
103 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
104 | { | |
105 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
106 | ||
107 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
108 | } | |
109 | ||
3f378b68 EP |
110 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
111 | int kern) | |
1da177e4 LT |
112 | { |
113 | struct inet_sock *inet; | |
114 | struct ipv6_pinfo *np; | |
115 | struct sock *sk; | |
1da177e4 LT |
116 | struct inet_protosw *answer; |
117 | struct proto *answer_prot; | |
118 | unsigned char answer_flags; | |
af1afe86 YH |
119 | int try_loading_module = 0; |
120 | int err; | |
1da177e4 | 121 | |
79462ad0 HFS |
122 | if (protocol < 0 || protocol >= IPPROTO_MAX) |
123 | return -EINVAL; | |
124 | ||
1da177e4 | 125 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
126 | lookup_protocol: |
127 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 128 | rcu_read_lock(); |
696adfe8 | 129 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 130 | |
696adfe8 | 131 | err = 0; |
1da177e4 LT |
132 | /* Check the non-wild match. */ |
133 | if (protocol == answer->protocol) { | |
134 | if (protocol != IPPROTO_IP) | |
135 | break; | |
136 | } else { | |
137 | /* Check for the two wild cases. */ | |
138 | if (IPPROTO_IP == protocol) { | |
139 | protocol = answer->protocol; | |
140 | break; | |
141 | } | |
142 | if (IPPROTO_IP == answer->protocol) | |
143 | break; | |
144 | } | |
af1afe86 | 145 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
146 | } |
147 | ||
696adfe8 | 148 | if (err) { |
af1afe86 YH |
149 | if (try_loading_module < 2) { |
150 | rcu_read_unlock(); | |
151 | /* | |
152 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
153 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
154 | */ | |
155 | if (++try_loading_module == 1) | |
156 | request_module("net-pf-%d-proto-%d-type-%d", | |
157 | PF_INET6, protocol, sock->type); | |
158 | /* | |
159 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
160 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
161 | */ | |
162 | else | |
163 | request_module("net-pf-%d-proto-%d", | |
164 | PF_INET6, protocol); | |
165 | goto lookup_protocol; | |
166 | } else | |
167 | goto out_rcu_unlock; | |
168 | } | |
169 | ||
170 | err = -EPERM; | |
af31f412 EB |
171 | if (sock->type == SOCK_RAW && !kern && |
172 | !ns_capable(net->user_ns, CAP_NET_RAW)) | |
1da177e4 | 173 | goto out_rcu_unlock; |
1da177e4 LT |
174 | |
175 | sock->ops = answer->ops; | |
1da177e4 | 176 | answer_prot = answer->prot; |
1da177e4 LT |
177 | answer_flags = answer->flags; |
178 | rcu_read_unlock(); | |
179 | ||
63159f29 | 180 | WARN_ON(!answer_prot->slab); |
1da177e4 | 181 | |
af1afe86 | 182 | err = -ENOBUFS; |
11aa9c28 | 183 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot, kern); |
63159f29 | 184 | if (!sk) |
1da177e4 LT |
185 | goto out; |
186 | ||
187 | sock_init_data(sock, sk); | |
188 | ||
af1afe86 | 189 | err = 0; |
1da177e4 | 190 | if (INET_PROTOSW_REUSE & answer_flags) |
4a17fd52 | 191 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
192 | |
193 | inet = inet_sk(sk); | |
469de9b9 | 194 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
195 | |
196 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 197 | inet->inet_num = protocol; |
1da177e4 LT |
198 | if (IPPROTO_RAW == protocol) |
199 | inet->hdrincl = 1; | |
200 | } | |
201 | ||
e6848976 | 202 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
203 | sk->sk_family = PF_INET6; |
204 | sk->sk_protocol = protocol; | |
205 | ||
206 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
207 | ||
208 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
209 | np->hop_limit = -1; | |
f935aa9e | 210 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
211 | np->mc_loop = 1; |
212 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
22b6722b | 213 | np->repflow = net->ipv6.sysctl.flowlabel_reflect; |
9fe516ba | 214 | sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 215 | |
1da177e4 LT |
216 | /* Init the ipv4 part of the socket since we can have sockets |
217 | * using v6 API for ipv4. | |
218 | */ | |
219 | inet->uc_ttl = -1; | |
220 | ||
221 | inet->mc_loop = 1; | |
222 | inet->mc_ttl = 1; | |
223 | inet->mc_index = 0; | |
224 | inet->mc_list = NULL; | |
4c507d28 | 225 | inet->rcv_tos = 0; |
1da177e4 | 226 | |
974eda11 | 227 | if (net->ipv4.sysctl_ip_no_pmtu_disc) |
1da177e4 LT |
228 | inet->pmtudisc = IP_PMTUDISC_DONT; |
229 | else | |
230 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 231 | /* |
e6848976 ACM |
232 | * Increment only the relevant sk_prot->socks debug field, this changes |
233 | * the previous behaviour of incrementing both the equivalent to | |
234 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
235 | * | |
236 | * This allows better debug granularity as we'll know exactly how many | |
237 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
238 | * transport protocol socks. -acme | |
239 | */ | |
240 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 241 | |
c720c7e8 | 242 | if (inet->inet_num) { |
1da177e4 LT |
243 | /* It assumes that any protocol which allows |
244 | * the user to assign a number at socket | |
245 | * creation time automatically shares. | |
246 | */ | |
c720c7e8 | 247 | inet->inet_sport = htons(inet->inet_num); |
086c653f CG |
248 | err = sk->sk_prot->hash(sk); |
249 | if (err) { | |
250 | sk_common_release(sk); | |
251 | goto out; | |
252 | } | |
1da177e4 LT |
253 | } |
254 | if (sk->sk_prot->init) { | |
af1afe86 YH |
255 | err = sk->sk_prot->init(sk); |
256 | if (err) { | |
1da177e4 LT |
257 | sk_common_release(sk); |
258 | goto out; | |
259 | } | |
260 | } | |
61023658 DA |
261 | |
262 | if (!kern) { | |
263 | err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk); | |
264 | if (err) { | |
265 | sk_common_release(sk); | |
266 | goto out; | |
267 | } | |
268 | } | |
1da177e4 | 269 | out: |
af1afe86 | 270 | return err; |
1da177e4 LT |
271 | out_rcu_unlock: |
272 | rcu_read_unlock(); | |
273 | goto out; | |
274 | } | |
275 | ||
276 | ||
277 | /* bind for INET6 API */ | |
278 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
279 | { | |
647c0c70 | 280 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
281 | struct sock *sk = sock->sk; |
282 | struct inet_sock *inet = inet_sk(sk); | |
283 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 284 | struct net *net = sock_net(sk); |
fd683222 | 285 | __be32 v4addr = 0; |
1da177e4 LT |
286 | unsigned short snum; |
287 | int addr_type = 0; | |
288 | int err = 0; | |
289 | ||
290 | /* If the socket has its own bind function then use it. */ | |
291 | if (sk->sk_prot->bind) | |
292 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
293 | ||
294 | if (addr_len < SIN6_LEN_RFC2133) | |
295 | return -EINVAL; | |
5a079c30 MM |
296 | |
297 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 298 | return -EAFNOSUPPORT; |
5a079c30 | 299 | |
1da177e4 LT |
300 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
301 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
302 | return -EINVAL; | |
303 | ||
304 | snum = ntohs(addr->sin6_port); | |
4548b683 KJ |
305 | if (snum && snum < inet_prot_sock(net) && |
306 | !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) | |
1da177e4 LT |
307 | return -EACCES; |
308 | ||
309 | lock_sock(sk); | |
310 | ||
311 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 312 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
313 | err = -EINVAL; |
314 | goto out; | |
315 | } | |
316 | ||
317 | /* Check if the address belongs to the host. */ | |
318 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
319 | int chk_addr_ret; |
320 | ||
783ed5a7 VY |
321 | /* Binding to v4-mapped address on a v6-only socket |
322 | * makes no sense | |
323 | */ | |
9fe516ba | 324 | if (sk->sk_ipv6only) { |
783ed5a7 VY |
325 | err = -EINVAL; |
326 | goto out; | |
327 | } | |
63d9950b | 328 | |
a34f0b31 | 329 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 330 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b | 331 | chk_addr_ret = inet_addr_type(net, v4addr); |
49a60158 | 332 | if (!net->ipv4.sysctl_ip_nonlocal_bind && |
63d9950b VY |
333 | !(inet->freebind || inet->transparent) && |
334 | v4addr != htonl(INADDR_ANY) && | |
335 | chk_addr_ret != RTN_LOCAL && | |
336 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
337 | chk_addr_ret != RTN_BROADCAST) { |
338 | err = -EADDRNOTAVAIL; | |
1da177e4 | 339 | goto out; |
ca6982b8 | 340 | } |
1da177e4 LT |
341 | } else { |
342 | if (addr_type != IPV6_ADDR_ANY) { | |
343 | struct net_device *dev = NULL; | |
344 | ||
16ba5e8e | 345 | rcu_read_lock(); |
842df073 | 346 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
347 | if (addr_len >= sizeof(struct sockaddr_in6) && |
348 | addr->sin6_scope_id) { | |
349 | /* Override any existing binding, if another one | |
350 | * is supplied by user. | |
351 | */ | |
352 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
353 | } | |
1ab1457c | 354 | |
1da177e4 LT |
355 | /* Binding to link-local address requires an interface */ |
356 | if (!sk->sk_bound_dev_if) { | |
357 | err = -EINVAL; | |
16ba5e8e | 358 | goto out_unlock; |
1da177e4 | 359 | } |
16ba5e8e | 360 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
361 | if (!dev) { |
362 | err = -ENODEV; | |
16ba5e8e | 363 | goto out_unlock; |
1da177e4 LT |
364 | } |
365 | } | |
366 | ||
367 | /* ipv4 addr of the socket is invalid. Only the | |
368 | * unspecified and mapped address have a v4 equivalent. | |
369 | */ | |
370 | v4addr = LOOPBACK4_IPV6; | |
371 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
35a256fe TH |
372 | if (!net->ipv6.sysctl.ip_nonlocal_bind && |
373 | !(inet->freebind || inet->transparent) && | |
0a513f6a | 374 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 375 | dev, 0)) { |
1da177e4 | 376 | err = -EADDRNOTAVAIL; |
16ba5e8e | 377 | goto out_unlock; |
1da177e4 LT |
378 | } |
379 | } | |
16ba5e8e | 380 | rcu_read_unlock(); |
1da177e4 LT |
381 | } |
382 | } | |
383 | ||
c720c7e8 ED |
384 | inet->inet_rcv_saddr = v4addr; |
385 | inet->inet_saddr = v4addr; | |
1da177e4 | 386 | |
efe4208f | 387 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
1ab1457c | 388 | |
1da177e4 | 389 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 390 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
391 | |
392 | /* Make sure we are allowed to bind here. */ | |
90c337da ED |
393 | if ((snum || !inet->bind_address_no_port) && |
394 | sk->sk_prot->get_port(sk, snum)) { | |
1da177e4 LT |
395 | inet_reset_saddr(sk); |
396 | err = -EADDRINUSE; | |
397 | goto out; | |
398 | } | |
399 | ||
0f8d3c7a | 400 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 401 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a | 402 | if (addr_type != IPV6_ADDR_MAPPED) |
9fe516ba | 403 | sk->sk_ipv6only = 1; |
0f8d3c7a | 404 | } |
1da177e4 LT |
405 | if (snum) |
406 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
407 | inet->inet_sport = htons(inet->inet_num); |
408 | inet->inet_dport = 0; | |
409 | inet->inet_daddr = 0; | |
1da177e4 LT |
410 | out: |
411 | release_sock(sk); | |
412 | return err; | |
16ba5e8e ED |
413 | out_unlock: |
414 | rcu_read_unlock(); | |
415 | goto out; | |
1da177e4 | 416 | } |
7159039a YH |
417 | EXPORT_SYMBOL(inet6_bind); |
418 | ||
1da177e4 LT |
419 | int inet6_release(struct socket *sock) |
420 | { | |
421 | struct sock *sk = sock->sk; | |
422 | ||
63159f29 | 423 | if (!sk) |
1da177e4 LT |
424 | return -EINVAL; |
425 | ||
426 | /* Free mc lists */ | |
427 | ipv6_sock_mc_close(sk); | |
428 | ||
429 | /* Free ac lists */ | |
430 | ipv6_sock_ac_close(sk); | |
431 | ||
432 | return inet_release(sock); | |
433 | } | |
7159039a YH |
434 | EXPORT_SYMBOL(inet6_release); |
435 | ||
7d06b2e0 | 436 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
437 | { |
438 | struct ipv6_pinfo *np = inet6_sk(sk); | |
439 | struct sk_buff *skb; | |
440 | struct ipv6_txoptions *opt; | |
441 | ||
1da177e4 LT |
442 | /* Release rx options */ |
443 | ||
647c0c70 | 444 | skb = xchg(&np->pktoptions, NULL); |
53b24b8f | 445 | if (skb) |
1da177e4 | 446 | kfree_skb(skb); |
4b340ae2 | 447 | |
647c0c70 | 448 | skb = xchg(&np->rxpmtu, NULL); |
53b24b8f | 449 | if (skb) |
4b340ae2 | 450 | kfree_skb(skb); |
1da177e4 LT |
451 | |
452 | /* Free flowlabels */ | |
453 | fl6_free_socklist(sk); | |
454 | ||
455 | /* Free tx options */ | |
456 | ||
45f6fad8 ED |
457 | opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL); |
458 | if (opt) { | |
459 | atomic_sub(opt->tot_len, &sk->sk_omem_alloc); | |
460 | txopt_put(opt); | |
461 | } | |
1da177e4 | 462 | } |
3cf3dc6c ACM |
463 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
464 | ||
1da177e4 LT |
465 | /* |
466 | * This does both peername and sockname. | |
467 | */ | |
1ab1457c | 468 | |
1da177e4 LT |
469 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
470 | int *uaddr_len, int peer) | |
471 | { | |
647c0c70 | 472 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
473 | struct sock *sk = sock->sk; |
474 | struct inet_sock *inet = inet_sk(sk); | |
475 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 476 | |
1da177e4 LT |
477 | sin->sin6_family = AF_INET6; |
478 | sin->sin6_flowinfo = 0; | |
479 | sin->sin6_scope_id = 0; | |
480 | if (peer) { | |
c720c7e8 | 481 | if (!inet->inet_dport) |
1da177e4 LT |
482 | return -ENOTCONN; |
483 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
484 | peer == 1) | |
485 | return -ENOTCONN; | |
c720c7e8 | 486 | sin->sin6_port = inet->inet_dport; |
efe4208f | 487 | sin->sin6_addr = sk->sk_v6_daddr; |
1da177e4 LT |
488 | if (np->sndflow) |
489 | sin->sin6_flowinfo = np->flow_label; | |
490 | } else { | |
efe4208f | 491 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
4e3fd7a0 | 492 | sin->sin6_addr = np->saddr; |
1da177e4 | 493 | else |
efe4208f | 494 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
1da177e4 | 495 | |
c720c7e8 | 496 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 497 | } |
842df073 HFS |
498 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
499 | sk->sk_bound_dev_if); | |
1da177e4 | 500 | *uaddr_len = sizeof(*sin); |
a02cec21 | 501 | return 0; |
1da177e4 | 502 | } |
7159039a YH |
503 | EXPORT_SYMBOL(inet6_getname); |
504 | ||
1da177e4 LT |
505 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
506 | { | |
507 | struct sock *sk = sock->sk; | |
3b1e0a65 | 508 | struct net *net = sock_net(sk); |
1da177e4 | 509 | |
647c0c70 | 510 | switch (cmd) { |
1da177e4 LT |
511 | case SIOCGSTAMP: |
512 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
513 | ||
ae40eb1e ED |
514 | case SIOCGSTAMPNS: |
515 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
516 | ||
1da177e4 LT |
517 | case SIOCADDRT: |
518 | case SIOCDELRT: | |
1ab1457c | 519 | |
a02cec21 | 520 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
521 | |
522 | case SIOCSIFADDR: | |
af284937 | 523 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 524 | case SIOCDIFADDR: |
af284937 | 525 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 526 | case SIOCSIFDSTADDR: |
af284937 | 527 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 528 | default: |
b5e5fa5e CH |
529 | if (!sk->sk_prot->ioctl) |
530 | return -ENOIOCTLCMD; | |
531 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
532 | } |
533 | /*NOTREACHED*/ | |
a02cec21 | 534 | return 0; |
1da177e4 | 535 | } |
7159039a YH |
536 | EXPORT_SYMBOL(inet6_ioctl); |
537 | ||
90ddc4f0 | 538 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
539 | .family = PF_INET6, |
540 | .owner = THIS_MODULE, | |
541 | .release = inet6_release, | |
542 | .bind = inet6_bind, | |
543 | .connect = inet_stream_connect, /* ok */ | |
544 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
545 | .accept = inet_accept, /* ok */ | |
546 | .getname = inet6_getname, | |
547 | .poll = tcp_poll, /* ok */ | |
548 | .ioctl = inet6_ioctl, /* must change */ | |
549 | .listen = inet_listen, /* ok */ | |
550 | .shutdown = inet_shutdown, /* ok */ | |
551 | .setsockopt = sock_common_setsockopt, /* ok */ | |
552 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
553 | .sendmsg = inet_sendmsg, /* ok */ |
554 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 555 | .mmap = sock_no_mmap, |
7ba42910 | 556 | .sendpage = inet_sendpage, |
45f91bdc JF |
557 | .sendmsg_locked = tcp_sendmsg_locked, |
558 | .sendpage_locked = tcp_sendpage_locked, | |
a0974dd3 | 559 | .splice_read = tcp_splice_read, |
32035585 TH |
560 | .read_sock = tcp_read_sock, |
561 | .peek_len = tcp_peek_len, | |
3fdadf7d | 562 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
563 | .compat_setsockopt = compat_sock_common_setsockopt, |
564 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 565 | #endif |
1da177e4 LT |
566 | }; |
567 | ||
90ddc4f0 | 568 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
569 | .family = PF_INET6, |
570 | .owner = THIS_MODULE, | |
571 | .release = inet6_release, | |
572 | .bind = inet6_bind, | |
573 | .connect = inet_dgram_connect, /* ok */ | |
574 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
575 | .accept = sock_no_accept, /* a do nothing */ | |
576 | .getname = inet6_getname, | |
577 | .poll = udp_poll, /* ok */ | |
578 | .ioctl = inet6_ioctl, /* must change */ | |
579 | .listen = sock_no_listen, /* ok */ | |
580 | .shutdown = inet_shutdown, /* ok */ | |
581 | .setsockopt = sock_common_setsockopt, /* ok */ | |
582 | .getsockopt = sock_common_getsockopt, /* ok */ | |
583 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 584 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
585 | .mmap = sock_no_mmap, |
586 | .sendpage = sock_no_sendpage, | |
627d2d6b | 587 | .set_peek_off = sk_set_peek_off, |
3fdadf7d | 588 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
589 | .compat_setsockopt = compat_sock_common_setsockopt, |
590 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 591 | #endif |
1da177e4 LT |
592 | }; |
593 | ||
ec1b4cf7 | 594 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
595 | .family = PF_INET6, |
596 | .create = inet6_create, | |
597 | .owner = THIS_MODULE, | |
598 | }; | |
599 | ||
87c3efbf | 600 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
601 | { |
602 | struct list_head *lh; | |
603 | struct inet_protosw *answer; | |
1da177e4 | 604 | struct list_head *last_perm; |
87c3efbf DL |
605 | int protocol = p->protocol; |
606 | int ret; | |
1da177e4 LT |
607 | |
608 | spin_lock_bh(&inetsw6_lock); | |
609 | ||
87c3efbf | 610 | ret = -EINVAL; |
1da177e4 LT |
611 | if (p->type >= SOCK_MAX) |
612 | goto out_illegal; | |
613 | ||
614 | /* If we are trying to override a permanent protocol, bail. */ | |
615 | answer = NULL; | |
87c3efbf | 616 | ret = -EPERM; |
1da177e4 LT |
617 | last_perm = &inetsw6[p->type]; |
618 | list_for_each(lh, &inetsw6[p->type]) { | |
619 | answer = list_entry(lh, struct inet_protosw, list); | |
620 | ||
621 | /* Check only the non-wild match. */ | |
622 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
623 | if (protocol == answer->protocol) | |
624 | break; | |
625 | last_perm = lh; | |
626 | } | |
627 | ||
628 | answer = NULL; | |
629 | } | |
630 | if (answer) | |
631 | goto out_permanent; | |
632 | ||
633 | /* Add the new entry after the last permanent entry if any, so that | |
634 | * the new entry does not override a permanent entry when matched with | |
635 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 636 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
637 | * system automatically returns to the old behavior. |
638 | */ | |
639 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 640 | ret = 0; |
1da177e4 LT |
641 | out: |
642 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 643 | return ret; |
1da177e4 LT |
644 | |
645 | out_permanent: | |
f3213831 | 646 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
647 | goto out; |
648 | ||
649 | out_illegal: | |
f3213831 | 650 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
651 | p->type); |
652 | goto out; | |
653 | } | |
7159039a YH |
654 | EXPORT_SYMBOL(inet6_register_protosw); |
655 | ||
1da177e4 LT |
656 | void |
657 | inet6_unregister_protosw(struct inet_protosw *p) | |
658 | { | |
659 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 660 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
661 | p->protocol); |
662 | } else { | |
663 | spin_lock_bh(&inetsw6_lock); | |
664 | list_del_rcu(&p->list); | |
665 | spin_unlock_bh(&inetsw6_lock); | |
666 | ||
667 | synchronize_net(); | |
668 | } | |
669 | } | |
7159039a YH |
670 | EXPORT_SYMBOL(inet6_unregister_protosw); |
671 | ||
b9750ce1 ACM |
672 | int inet6_sk_rebuild_header(struct sock *sk) |
673 | { | |
b9750ce1 | 674 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 675 | struct dst_entry *dst; |
b9750ce1 ACM |
676 | |
677 | dst = __sk_dst_check(sk, np->dst_cookie); | |
678 | ||
63159f29 | 679 | if (!dst) { |
b9750ce1 | 680 | struct inet_sock *inet = inet_sk(sk); |
20c59de2 | 681 | struct in6_addr *final_p, final; |
4c9483b2 DM |
682 | struct flowi6 fl6; |
683 | ||
684 | memset(&fl6, 0, sizeof(fl6)); | |
685 | fl6.flowi6_proto = sk->sk_protocol; | |
efe4208f | 686 | fl6.daddr = sk->sk_v6_daddr; |
4e3fd7a0 | 687 | fl6.saddr = np->saddr; |
4c9483b2 DM |
688 | fl6.flowlabel = np->flow_label; |
689 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
690 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
691 | fl6.fl6_dport = inet->inet_dport; |
692 | fl6.fl6_sport = inet->inet_sport; | |
e2d118a1 | 693 | fl6.flowi6_uid = sk->sk_uid; |
4c9483b2 DM |
694 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
695 | ||
45f6fad8 ED |
696 | rcu_read_lock(); |
697 | final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), | |
698 | &final); | |
699 | rcu_read_unlock(); | |
4c9483b2 | 700 | |
0e0d44ab | 701 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
68d0c6d3 | 702 | if (IS_ERR(dst)) { |
b9750ce1 | 703 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
704 | sk->sk_err_soft = -PTR_ERR(dst); |
705 | return PTR_ERR(dst); | |
b9750ce1 ACM |
706 | } |
707 | ||
6bd4f355 | 708 | ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
709 | } |
710 | ||
711 | return 0; | |
712 | } | |
b9750ce1 ACM |
713 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
714 | ||
a224772d ED |
715 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, |
716 | const struct inet6_skb_parm *opt) | |
399c07de | 717 | { |
92113bfd | 718 | const struct ipv6_pinfo *np = inet6_sk(sk); |
399c07de ACM |
719 | |
720 | if (np->rxopt.all) { | |
8b58a398 FW |
721 | if (((opt->flags & IP6SKB_HOPBYHOP) && |
722 | (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) || | |
ac1eabca | 723 | (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) && |
399c07de ACM |
724 | np->rxopt.bits.rxflow) || |
725 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
726 | np->rxopt.bits.osrcrt)) || | |
727 | ((opt->dst1 || opt->dst0) && | |
728 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 729 | return true; |
399c07de | 730 | } |
92113bfd | 731 | return false; |
399c07de | 732 | } |
399c07de ACM |
733 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
734 | ||
7546dd97 | 735 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 736 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 737 | .func = ipv6_rcv, |
22061d80 VY |
738 | }; |
739 | ||
662397fd YH |
740 | static int __init ipv6_packet_init(void) |
741 | { | |
742 | dev_add_pack(&ipv6_packet_type); | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static void ipv6_packet_cleanup(void) | |
747 | { | |
748 | dev_remove_pack(&ipv6_packet_type); | |
749 | } | |
750 | ||
e43291cb DL |
751 | static int __net_init ipv6_init_mibs(struct net *net) |
752 | { | |
827da44c JS |
753 | int i; |
754 | ||
698365fa WC |
755 | net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); |
756 | if (!net->mib.udp_stats_in6) | |
0c7ed677 | 757 | return -ENOMEM; |
698365fa WC |
758 | net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); |
759 | if (!net->mib.udplite_stats_in6) | |
be713a44 | 760 | goto err_udplite_mib; |
698365fa WC |
761 | net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); |
762 | if (!net->mib.ipv6_statistics) | |
9261e537 | 763 | goto err_ip_mib; |
827da44c JS |
764 | |
765 | for_each_possible_cpu(i) { | |
766 | struct ipstats_mib *af_inet6_stats; | |
698365fa | 767 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); |
827da44c | 768 | u64_stats_init(&af_inet6_stats->syncp); |
827da44c JS |
769 | } |
770 | ||
771 | ||
698365fa WC |
772 | net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); |
773 | if (!net->mib.icmpv6_statistics) | |
9261e537 | 774 | goto err_icmp_mib; |
2a24444f ED |
775 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
776 | GFP_KERNEL); | |
777 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 778 | goto err_icmpmsg_mib; |
e43291cb | 779 | return 0; |
be713a44 | 780 | |
9261e537 | 781 | err_icmpmsg_mib: |
698365fa | 782 | free_percpu(net->mib.icmpv6_statistics); |
9261e537 | 783 | err_icmp_mib: |
698365fa | 784 | free_percpu(net->mib.ipv6_statistics); |
9261e537 | 785 | err_ip_mib: |
698365fa | 786 | free_percpu(net->mib.udplite_stats_in6); |
be713a44 | 787 | err_udplite_mib: |
698365fa | 788 | free_percpu(net->mib.udp_stats_in6); |
be713a44 | 789 | return -ENOMEM; |
e43291cb DL |
790 | } |
791 | ||
2c8c1e72 | 792 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 793 | { |
698365fa WC |
794 | free_percpu(net->mib.udp_stats_in6); |
795 | free_percpu(net->mib.udplite_stats_in6); | |
796 | free_percpu(net->mib.ipv6_statistics); | |
797 | free_percpu(net->mib.icmpv6_statistics); | |
2a24444f | 798 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
799 | } |
800 | ||
e7dc8494 | 801 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 802 | { |
0c96d8c5 DL |
803 | int err = 0; |
804 | ||
99bc9c4e | 805 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 806 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
6444f72b | 807 | net->ipv6.sysctl.flowlabel_consistency = 1; |
42240901 | 808 | net->ipv6.sysctl.auto_flowlabels = IP6_DEFAULT_AUTO_FLOW_LABELS; |
1855b7c3 HFS |
809 | net->ipv6.sysctl.idgen_retries = 3; |
810 | net->ipv6.sysctl.idgen_delay = 1 * HZ; | |
be26849b | 811 | net->ipv6.sysctl.flowlabel_state_ranges = 0; |
47d3d7ac TH |
812 | net->ipv6.sysctl.max_dst_opts_cnt = IP6_DEFAULT_MAX_DST_OPTS_CNT; |
813 | net->ipv6.sysctl.max_hbh_opts_cnt = IP6_DEFAULT_MAX_HBH_OPTS_CNT; | |
814 | net->ipv6.sysctl.max_dst_opts_len = IP6_DEFAULT_MAX_DST_OPTS_LEN; | |
815 | net->ipv6.sysctl.max_hbh_opts_len = IP6_DEFAULT_MAX_HBH_OPTS_LEN; | |
812918c4 | 816 | atomic_set(&net->ipv6.fib6_sernum, 1); |
e71e0349 | 817 | |
e43291cb DL |
818 | err = ipv6_init_mibs(net); |
819 | if (err) | |
820 | return err; | |
0c96d8c5 DL |
821 | #ifdef CONFIG_PROC_FS |
822 | err = udp6_proc_init(net); | |
823 | if (err) | |
824 | goto out; | |
6f8b13bc DL |
825 | err = tcp6_proc_init(net); |
826 | if (err) | |
827 | goto proc_tcp6_fail; | |
6ab57e7e DL |
828 | err = ac6_proc_init(net); |
829 | if (err) | |
830 | goto proc_ac6_fail; | |
0c96d8c5 DL |
831 | #endif |
832 | return err; | |
6f8b13bc DL |
833 | |
834 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
835 | proc_ac6_fail: |
836 | tcp6_proc_exit(net); | |
6f8b13bc DL |
837 | proc_tcp6_fail: |
838 | udp6_proc_exit(net); | |
e43291cb DL |
839 | out: |
840 | ipv6_cleanup_mibs(net); | |
841 | return err; | |
6f8b13bc | 842 | #endif |
81c1c178 DL |
843 | } |
844 | ||
2c8c1e72 | 845 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 846 | { |
0c96d8c5 DL |
847 | #ifdef CONFIG_PROC_FS |
848 | udp6_proc_exit(net); | |
6f8b13bc | 849 | tcp6_proc_exit(net); |
6ab57e7e | 850 | ac6_proc_exit(net); |
0c96d8c5 | 851 | #endif |
e43291cb | 852 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
853 | } |
854 | ||
855 | static struct pernet_operations inet6_net_ops = { | |
856 | .init = inet6_net_init, | |
857 | .exit = inet6_net_exit, | |
858 | }; | |
859 | ||
5f81bd2e CW |
860 | static const struct ipv6_stub ipv6_stub_impl = { |
861 | .ipv6_sock_mc_join = ipv6_sock_mc_join, | |
862 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, | |
863 | .ipv6_dst_lookup = ip6_dst_lookup, | |
864 | .udpv6_encap_enable = udpv6_encap_enable, | |
f564f45c | 865 | .ndisc_send_na = ndisc_send_na, |
e15a00aa | 866 | .nd_tbl = &nd_tbl, |
5f81bd2e CW |
867 | }; |
868 | ||
1da177e4 LT |
869 | static int __init inet6_init(void) |
870 | { | |
1ab1457c | 871 | struct list_head *r; |
fe7ca2e1 | 872 | int err = 0; |
1da177e4 | 873 | |
b4772ef8 | 874 | sock_skb_cb_check_size(sizeof(struct inet6_skb_parm)); |
ef047f5e | 875 | |
fe7ca2e1 | 876 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 877 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
878 | INIT_LIST_HEAD(r); |
879 | ||
56d417b1 | 880 | if (disable_ipv6_mod) { |
f3213831 | 881 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
882 | goto out; |
883 | } | |
884 | ||
1da177e4 LT |
885 | err = proto_register(&tcpv6_prot, 1); |
886 | if (err) | |
887 | goto out; | |
888 | ||
889 | err = proto_register(&udpv6_prot, 1); | |
890 | if (err) | |
891 | goto out_unregister_tcp_proto; | |
892 | ||
ba4e58ec | 893 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
894 | if (err) |
895 | goto out_unregister_udp_proto; | |
896 | ||
ba4e58ec GR |
897 | err = proto_register(&rawv6_prot, 1); |
898 | if (err) | |
899 | goto out_unregister_udplite_proto; | |
900 | ||
6d0bfe22 LC |
901 | err = proto_register(&pingv6_prot, 1); |
902 | if (err) | |
903 | goto out_unregister_ping_proto; | |
1da177e4 | 904 | |
1da177e4 LT |
905 | /* We MUST register RAW sockets before we create the ICMP6, |
906 | * IGMP6, or NDISC control sockets. | |
907 | */ | |
7f4e4868 DL |
908 | err = rawv6_init(); |
909 | if (err) | |
910 | goto out_unregister_raw_proto; | |
1da177e4 LT |
911 | |
912 | /* Register the family here so that the init calls below will | |
913 | * be able to create sockets. (?? is this dangerous ??) | |
914 | */ | |
8eb55910 DM |
915 | err = sock_register(&inet6_family_ops); |
916 | if (err) | |
7f4e4868 | 917 | goto out_sock_register_fail; |
1da177e4 | 918 | |
1da177e4 LT |
919 | /* |
920 | * ipngwg API draft makes clear that the correct semantics | |
921 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 922 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
923 | * able to communicate via both network protocols. |
924 | */ | |
925 | ||
81c1c178 DL |
926 | err = register_pernet_subsys(&inet6_net_ops); |
927 | if (err) | |
928 | goto register_pernet_fail; | |
623d1a1a WC |
929 | err = ip6_mr_init(); |
930 | if (err) | |
931 | goto ipmr_fail; | |
15e66807 WC |
932 | err = icmpv6_init(); |
933 | if (err) | |
934 | goto icmp_fail; | |
9b0f976f | 935 | err = ndisc_init(); |
1da177e4 LT |
936 | if (err) |
937 | goto ndisc_fail; | |
9b0f976f | 938 | err = igmp6_init(); |
1da177e4 LT |
939 | if (err) |
940 | goto igmp_fail; | |
5f81bd2e | 941 | |
2cc7d573 HW |
942 | err = ipv6_netfilter_init(); |
943 | if (err) | |
944 | goto netfilter_fail; | |
1da177e4 LT |
945 | /* Create /proc/foo6 entries. */ |
946 | #ifdef CONFIG_PROC_FS | |
947 | err = -ENOMEM; | |
948 | if (raw6_proc_init()) | |
949 | goto proc_raw6_fail; | |
ba4e58ec GR |
950 | if (udplite6_proc_init()) |
951 | goto proc_udplite6_fail; | |
1da177e4 LT |
952 | if (ipv6_misc_proc_init()) |
953 | goto proc_misc6_fail; | |
1da177e4 LT |
954 | if (if6_proc_init()) |
955 | goto proc_if6_fail; | |
956 | #endif | |
e2fddf5e DL |
957 | err = ip6_route_init(); |
958 | if (err) | |
959 | goto ip6_route_fail; | |
2c861cc6 MK |
960 | err = ndisc_late_init(); |
961 | if (err) | |
962 | goto ndisc_late_fail; | |
0a3e78ac DL |
963 | err = ip6_flowlabel_init(); |
964 | if (err) | |
965 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
966 | err = addrconf_init(); |
967 | if (err) | |
968 | goto addrconf_fail; | |
1da177e4 LT |
969 | |
970 | /* Init v6 extension headers. */ | |
248b238d DL |
971 | err = ipv6_exthdrs_init(); |
972 | if (err) | |
973 | goto ipv6_exthdrs_fail; | |
974 | ||
853cbbaa DL |
975 | err = ipv6_frag_init(); |
976 | if (err) | |
977 | goto ipv6_frag_fail; | |
1da177e4 LT |
978 | |
979 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
980 | err = udpv6_init(); |
981 | if (err) | |
982 | goto udpv6_fail; | |
e2ed4052 | 983 | |
7f4e4868 DL |
984 | err = udplitev6_init(); |
985 | if (err) | |
986 | goto udplitev6_fail; | |
987 | ||
a6024562 TH |
988 | err = udpv6_offload_init(); |
989 | if (err) | |
990 | goto udpv6_offload_fail; | |
991 | ||
7f4e4868 DL |
992 | err = tcpv6_init(); |
993 | if (err) | |
994 | goto tcpv6_fail; | |
995 | ||
996 | err = ipv6_packet_init(); | |
997 | if (err) | |
998 | goto ipv6_packet_fail; | |
94911fe3 | 999 | |
6d0bfe22 LC |
1000 | err = pingv6_init(); |
1001 | if (err) | |
1002 | goto pingv6_fail; | |
1003 | ||
cb72d382 HD |
1004 | err = calipso_init(); |
1005 | if (err) | |
1006 | goto calipso_fail; | |
1007 | ||
915d7e5e DL |
1008 | err = seg6_init(); |
1009 | if (err) | |
1010 | goto seg6_fail; | |
1011 | ||
382ed724 VY |
1012 | err = igmp6_late_init(); |
1013 | if (err) | |
1014 | goto igmp6_late_err; | |
1015 | ||
94911fe3 BT |
1016 | #ifdef CONFIG_SYSCTL |
1017 | err = ipv6_sysctl_register(); | |
1018 | if (err) | |
1019 | goto sysctl_fail; | |
1020 | #endif | |
b7d6df57 PA |
1021 | |
1022 | /* ensure that ipv6 stubs are visible only after ipv6 is ready */ | |
1023 | wmb(); | |
1024 | ipv6_stub = &ipv6_stub_impl; | |
1da177e4 LT |
1025 | out: |
1026 | return err; | |
1027 | ||
94911fe3 BT |
1028 | #ifdef CONFIG_SYSCTL |
1029 | sysctl_fail: | |
382ed724 | 1030 | igmp6_late_cleanup(); |
94911fe3 | 1031 | #endif |
382ed724 VY |
1032 | igmp6_late_err: |
1033 | seg6_exit(); | |
915d7e5e DL |
1034 | seg6_fail: |
1035 | calipso_exit(); | |
cb72d382 HD |
1036 | calipso_fail: |
1037 | pingv6_exit(); | |
6d0bfe22 | 1038 | pingv6_fail: |
eca42aaf | 1039 | ipv6_packet_cleanup(); |
7f4e4868 DL |
1040 | ipv6_packet_fail: |
1041 | tcpv6_exit(); | |
1042 | tcpv6_fail: | |
a6024562 TH |
1043 | udpv6_offload_exit(); |
1044 | udpv6_offload_fail: | |
7f4e4868 DL |
1045 | udplitev6_exit(); |
1046 | udplitev6_fail: | |
1047 | udpv6_exit(); | |
1048 | udpv6_fail: | |
1049 | ipv6_frag_exit(); | |
853cbbaa DL |
1050 | ipv6_frag_fail: |
1051 | ipv6_exthdrs_exit(); | |
248b238d DL |
1052 | ipv6_exthdrs_fail: |
1053 | addrconf_cleanup(); | |
1da177e4 LT |
1054 | addrconf_fail: |
1055 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1056 | ip6_flowlabel_fail: |
2c861cc6 MK |
1057 | ndisc_late_cleanup(); |
1058 | ndisc_late_fail: | |
1da177e4 | 1059 | ip6_route_cleanup(); |
e2fddf5e | 1060 | ip6_route_fail: |
1da177e4 LT |
1061 | #ifdef CONFIG_PROC_FS |
1062 | if6_proc_exit(); | |
1063 | proc_if6_fail: | |
1da177e4 LT |
1064 | ipv6_misc_proc_exit(); |
1065 | proc_misc6_fail: | |
ba4e58ec GR |
1066 | udplite6_proc_exit(); |
1067 | proc_udplite6_fail: | |
1da177e4 LT |
1068 | raw6_proc_exit(); |
1069 | proc_raw6_fail: | |
1070 | #endif | |
2cc7d573 HW |
1071 | ipv6_netfilter_fini(); |
1072 | netfilter_fail: | |
1da177e4 LT |
1073 | igmp6_cleanup(); |
1074 | igmp_fail: | |
1075 | ndisc_cleanup(); | |
1076 | ndisc_fail: | |
623d1a1a | 1077 | ip6_mr_cleanup(); |
1da177e4 | 1078 | icmp_fail: |
81c1c178 | 1079 | unregister_pernet_subsys(&inet6_net_ops); |
15e66807 WC |
1080 | ipmr_fail: |
1081 | icmpv6_cleanup(); | |
81c1c178 | 1082 | register_pernet_fail: |
8eb55910 | 1083 | sock_unregister(PF_INET6); |
e2fddf5e | 1084 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1085 | out_sock_register_fail: |
1086 | rawv6_exit(); | |
6d0bfe22 LC |
1087 | out_unregister_ping_proto: |
1088 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1089 | out_unregister_raw_proto: |
1090 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1091 | out_unregister_udplite_proto: |
1092 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1093 | out_unregister_udp_proto: |
1094 | proto_unregister(&udpv6_prot); | |
1095 | out_unregister_tcp_proto: | |
1096 | proto_unregister(&tcpv6_prot); | |
1097 | goto out; | |
1098 | } | |
1099 | module_init(inet6_init); | |
1100 | ||
1da177e4 | 1101 | MODULE_ALIAS_NETPROTO(PF_INET6); |