Commit | Line | Data |
---|---|---|
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 | |
63 | ||
64 | #include <asm/uaccess.h> | |
7bc570c8 | 65 | #include <linux/mroute6.h> |
1da177e4 | 66 | |
a6024562 TH |
67 | #include "ip6_offload.h" |
68 | ||
1da177e4 LT |
69 | MODULE_AUTHOR("Cast of dozens"); |
70 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
71 | MODULE_LICENSE("GPL"); | |
72 | ||
f1267347 | 73 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
74 | * build a new socket. |
75 | */ | |
76 | static struct list_head inetsw6[SOCK_MAX]; | |
77 | static DEFINE_SPINLOCK(inetsw6_lock); | |
78 | ||
56d417b1 BH |
79 | struct ipv6_params ipv6_defaults = { |
80 | .disable_ipv6 = 0, | |
81 | .autoconf = 1, | |
82 | }; | |
83 | ||
647c0c70 | 84 | static int disable_ipv6_mod; |
56d417b1 BH |
85 | |
86 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
87 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
88 | ||
89 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
90 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
91 | ||
92 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
93 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 94 | |
1da177e4 LT |
95 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
96 | { | |
97 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
98 | ||
99 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
100 | } | |
101 | ||
3f378b68 EP |
102 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
103 | int kern) | |
1da177e4 LT |
104 | { |
105 | struct inet_sock *inet; | |
106 | struct ipv6_pinfo *np; | |
107 | struct sock *sk; | |
1da177e4 LT |
108 | struct inet_protosw *answer; |
109 | struct proto *answer_prot; | |
110 | unsigned char answer_flags; | |
af1afe86 YH |
111 | int try_loading_module = 0; |
112 | int err; | |
1da177e4 | 113 | |
79462ad0 HFS |
114 | if (protocol < 0 || protocol >= IPPROTO_MAX) |
115 | return -EINVAL; | |
116 | ||
1da177e4 | 117 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
118 | lookup_protocol: |
119 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 120 | rcu_read_lock(); |
696adfe8 | 121 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 122 | |
696adfe8 | 123 | err = 0; |
1da177e4 LT |
124 | /* Check the non-wild match. */ |
125 | if (protocol == answer->protocol) { | |
126 | if (protocol != IPPROTO_IP) | |
127 | break; | |
128 | } else { | |
129 | /* Check for the two wild cases. */ | |
130 | if (IPPROTO_IP == protocol) { | |
131 | protocol = answer->protocol; | |
132 | break; | |
133 | } | |
134 | if (IPPROTO_IP == answer->protocol) | |
135 | break; | |
136 | } | |
af1afe86 | 137 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
138 | } |
139 | ||
696adfe8 | 140 | if (err) { |
af1afe86 YH |
141 | if (try_loading_module < 2) { |
142 | rcu_read_unlock(); | |
143 | /* | |
144 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
145 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
146 | */ | |
147 | if (++try_loading_module == 1) | |
148 | request_module("net-pf-%d-proto-%d-type-%d", | |
149 | PF_INET6, protocol, sock->type); | |
150 | /* | |
151 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
152 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
153 | */ | |
154 | else | |
155 | request_module("net-pf-%d-proto-%d", | |
156 | PF_INET6, protocol); | |
157 | goto lookup_protocol; | |
158 | } else | |
159 | goto out_rcu_unlock; | |
160 | } | |
161 | ||
162 | err = -EPERM; | |
af31f412 EB |
163 | if (sock->type == SOCK_RAW && !kern && |
164 | !ns_capable(net->user_ns, CAP_NET_RAW)) | |
1da177e4 | 165 | goto out_rcu_unlock; |
1da177e4 LT |
166 | |
167 | sock->ops = answer->ops; | |
1da177e4 | 168 | answer_prot = answer->prot; |
1da177e4 LT |
169 | answer_flags = answer->flags; |
170 | rcu_read_unlock(); | |
171 | ||
63159f29 | 172 | WARN_ON(!answer_prot->slab); |
1da177e4 | 173 | |
af1afe86 | 174 | err = -ENOBUFS; |
11aa9c28 | 175 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot, kern); |
63159f29 | 176 | if (!sk) |
1da177e4 LT |
177 | goto out; |
178 | ||
179 | sock_init_data(sock, sk); | |
180 | ||
af1afe86 | 181 | err = 0; |
1da177e4 | 182 | if (INET_PROTOSW_REUSE & answer_flags) |
4a17fd52 | 183 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
184 | |
185 | inet = inet_sk(sk); | |
469de9b9 | 186 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
187 | |
188 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 189 | inet->inet_num = protocol; |
1da177e4 LT |
190 | if (IPPROTO_RAW == protocol) |
191 | inet->hdrincl = 1; | |
192 | } | |
193 | ||
e6848976 | 194 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
195 | sk->sk_family = PF_INET6; |
196 | sk->sk_protocol = protocol; | |
197 | ||
198 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
199 | ||
200 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
201 | np->hop_limit = -1; | |
f935aa9e | 202 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
203 | np->mc_loop = 1; |
204 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
42240901 | 205 | np->autoflowlabel = ip6_default_np_autolabel(sock_net(sk)); |
9fe516ba | 206 | sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 207 | |
1da177e4 LT |
208 | /* Init the ipv4 part of the socket since we can have sockets |
209 | * using v6 API for ipv4. | |
210 | */ | |
211 | inet->uc_ttl = -1; | |
212 | ||
213 | inet->mc_loop = 1; | |
214 | inet->mc_ttl = 1; | |
215 | inet->mc_index = 0; | |
216 | inet->mc_list = NULL; | |
4c507d28 | 217 | inet->rcv_tos = 0; |
1da177e4 | 218 | |
974eda11 | 219 | if (net->ipv4.sysctl_ip_no_pmtu_disc) |
1da177e4 LT |
220 | inet->pmtudisc = IP_PMTUDISC_DONT; |
221 | else | |
222 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 223 | /* |
e6848976 ACM |
224 | * Increment only the relevant sk_prot->socks debug field, this changes |
225 | * the previous behaviour of incrementing both the equivalent to | |
226 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
227 | * | |
228 | * This allows better debug granularity as we'll know exactly how many | |
229 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
230 | * transport protocol socks. -acme | |
231 | */ | |
232 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 233 | |
c720c7e8 | 234 | if (inet->inet_num) { |
1da177e4 LT |
235 | /* It assumes that any protocol which allows |
236 | * the user to assign a number at socket | |
237 | * creation time automatically shares. | |
238 | */ | |
c720c7e8 | 239 | inet->inet_sport = htons(inet->inet_num); |
086c653f CG |
240 | err = sk->sk_prot->hash(sk); |
241 | if (err) { | |
242 | sk_common_release(sk); | |
243 | goto out; | |
244 | } | |
1da177e4 LT |
245 | } |
246 | if (sk->sk_prot->init) { | |
af1afe86 YH |
247 | err = sk->sk_prot->init(sk); |
248 | if (err) { | |
1da177e4 LT |
249 | sk_common_release(sk); |
250 | goto out; | |
251 | } | |
252 | } | |
253 | out: | |
af1afe86 | 254 | return err; |
1da177e4 LT |
255 | out_rcu_unlock: |
256 | rcu_read_unlock(); | |
257 | goto out; | |
258 | } | |
259 | ||
260 | ||
261 | /* bind for INET6 API */ | |
262 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
263 | { | |
647c0c70 | 264 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
265 | struct sock *sk = sock->sk; |
266 | struct inet_sock *inet = inet_sk(sk); | |
267 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 268 | struct net *net = sock_net(sk); |
fd683222 | 269 | __be32 v4addr = 0; |
1da177e4 LT |
270 | unsigned short snum; |
271 | int addr_type = 0; | |
272 | int err = 0; | |
273 | ||
274 | /* If the socket has its own bind function then use it. */ | |
275 | if (sk->sk_prot->bind) | |
276 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
277 | ||
278 | if (addr_len < SIN6_LEN_RFC2133) | |
279 | return -EINVAL; | |
5a079c30 MM |
280 | |
281 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 282 | return -EAFNOSUPPORT; |
5a079c30 | 283 | |
1da177e4 LT |
284 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
285 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
286 | return -EINVAL; | |
287 | ||
288 | snum = ntohs(addr->sin6_port); | |
3594698a | 289 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
1da177e4 LT |
290 | return -EACCES; |
291 | ||
292 | lock_sock(sk); | |
293 | ||
294 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 295 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
296 | err = -EINVAL; |
297 | goto out; | |
298 | } | |
299 | ||
300 | /* Check if the address belongs to the host. */ | |
301 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
302 | int chk_addr_ret; |
303 | ||
783ed5a7 VY |
304 | /* Binding to v4-mapped address on a v6-only socket |
305 | * makes no sense | |
306 | */ | |
9fe516ba | 307 | if (sk->sk_ipv6only) { |
783ed5a7 VY |
308 | err = -EINVAL; |
309 | goto out; | |
310 | } | |
63d9950b | 311 | |
a34f0b31 | 312 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 313 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b | 314 | chk_addr_ret = inet_addr_type(net, v4addr); |
49a60158 | 315 | if (!net->ipv4.sysctl_ip_nonlocal_bind && |
63d9950b VY |
316 | !(inet->freebind || inet->transparent) && |
317 | v4addr != htonl(INADDR_ANY) && | |
318 | chk_addr_ret != RTN_LOCAL && | |
319 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
320 | chk_addr_ret != RTN_BROADCAST) { |
321 | err = -EADDRNOTAVAIL; | |
1da177e4 | 322 | goto out; |
ca6982b8 | 323 | } |
1da177e4 LT |
324 | } else { |
325 | if (addr_type != IPV6_ADDR_ANY) { | |
326 | struct net_device *dev = NULL; | |
327 | ||
16ba5e8e | 328 | rcu_read_lock(); |
842df073 | 329 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
330 | if (addr_len >= sizeof(struct sockaddr_in6) && |
331 | addr->sin6_scope_id) { | |
332 | /* Override any existing binding, if another one | |
333 | * is supplied by user. | |
334 | */ | |
335 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
336 | } | |
1ab1457c | 337 | |
1da177e4 LT |
338 | /* Binding to link-local address requires an interface */ |
339 | if (!sk->sk_bound_dev_if) { | |
340 | err = -EINVAL; | |
16ba5e8e | 341 | goto out_unlock; |
1da177e4 | 342 | } |
16ba5e8e | 343 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
344 | if (!dev) { |
345 | err = -ENODEV; | |
16ba5e8e | 346 | goto out_unlock; |
1da177e4 LT |
347 | } |
348 | } | |
349 | ||
350 | /* ipv4 addr of the socket is invalid. Only the | |
351 | * unspecified and mapped address have a v4 equivalent. | |
352 | */ | |
353 | v4addr = LOOPBACK4_IPV6; | |
354 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
35a256fe TH |
355 | if (!net->ipv6.sysctl.ip_nonlocal_bind && |
356 | !(inet->freebind || inet->transparent) && | |
0a513f6a | 357 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 358 | dev, 0)) { |
1da177e4 | 359 | err = -EADDRNOTAVAIL; |
16ba5e8e | 360 | goto out_unlock; |
1da177e4 LT |
361 | } |
362 | } | |
16ba5e8e | 363 | rcu_read_unlock(); |
1da177e4 LT |
364 | } |
365 | } | |
366 | ||
c720c7e8 ED |
367 | inet->inet_rcv_saddr = v4addr; |
368 | inet->inet_saddr = v4addr; | |
1da177e4 | 369 | |
efe4208f | 370 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
1ab1457c | 371 | |
1da177e4 | 372 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 373 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
374 | |
375 | /* Make sure we are allowed to bind here. */ | |
90c337da ED |
376 | if ((snum || !inet->bind_address_no_port) && |
377 | sk->sk_prot->get_port(sk, snum)) { | |
1da177e4 LT |
378 | inet_reset_saddr(sk); |
379 | err = -EADDRINUSE; | |
380 | goto out; | |
381 | } | |
382 | ||
0f8d3c7a | 383 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 384 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a | 385 | if (addr_type != IPV6_ADDR_MAPPED) |
9fe516ba | 386 | sk->sk_ipv6only = 1; |
0f8d3c7a | 387 | } |
1da177e4 LT |
388 | if (snum) |
389 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
390 | inet->inet_sport = htons(inet->inet_num); |
391 | inet->inet_dport = 0; | |
392 | inet->inet_daddr = 0; | |
1da177e4 LT |
393 | out: |
394 | release_sock(sk); | |
395 | return err; | |
16ba5e8e ED |
396 | out_unlock: |
397 | rcu_read_unlock(); | |
398 | goto out; | |
1da177e4 | 399 | } |
7159039a YH |
400 | EXPORT_SYMBOL(inet6_bind); |
401 | ||
1da177e4 LT |
402 | int inet6_release(struct socket *sock) |
403 | { | |
404 | struct sock *sk = sock->sk; | |
405 | ||
63159f29 | 406 | if (!sk) |
1da177e4 LT |
407 | return -EINVAL; |
408 | ||
409 | /* Free mc lists */ | |
410 | ipv6_sock_mc_close(sk); | |
411 | ||
412 | /* Free ac lists */ | |
413 | ipv6_sock_ac_close(sk); | |
414 | ||
415 | return inet_release(sock); | |
416 | } | |
7159039a YH |
417 | EXPORT_SYMBOL(inet6_release); |
418 | ||
7d06b2e0 | 419 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
420 | { |
421 | struct ipv6_pinfo *np = inet6_sk(sk); | |
422 | struct sk_buff *skb; | |
423 | struct ipv6_txoptions *opt; | |
424 | ||
1da177e4 LT |
425 | /* Release rx options */ |
426 | ||
647c0c70 | 427 | skb = xchg(&np->pktoptions, NULL); |
53b24b8f | 428 | if (skb) |
1da177e4 | 429 | kfree_skb(skb); |
4b340ae2 | 430 | |
647c0c70 | 431 | skb = xchg(&np->rxpmtu, NULL); |
53b24b8f | 432 | if (skb) |
4b340ae2 | 433 | kfree_skb(skb); |
1da177e4 LT |
434 | |
435 | /* Free flowlabels */ | |
436 | fl6_free_socklist(sk); | |
437 | ||
438 | /* Free tx options */ | |
439 | ||
45f6fad8 ED |
440 | opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL); |
441 | if (opt) { | |
442 | atomic_sub(opt->tot_len, &sk->sk_omem_alloc); | |
443 | txopt_put(opt); | |
444 | } | |
1da177e4 | 445 | } |
3cf3dc6c ACM |
446 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
447 | ||
1da177e4 LT |
448 | /* |
449 | * This does both peername and sockname. | |
450 | */ | |
1ab1457c | 451 | |
1da177e4 LT |
452 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
453 | int *uaddr_len, int peer) | |
454 | { | |
647c0c70 | 455 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
456 | struct sock *sk = sock->sk; |
457 | struct inet_sock *inet = inet_sk(sk); | |
458 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 459 | |
1da177e4 LT |
460 | sin->sin6_family = AF_INET6; |
461 | sin->sin6_flowinfo = 0; | |
462 | sin->sin6_scope_id = 0; | |
463 | if (peer) { | |
c720c7e8 | 464 | if (!inet->inet_dport) |
1da177e4 LT |
465 | return -ENOTCONN; |
466 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
467 | peer == 1) | |
468 | return -ENOTCONN; | |
c720c7e8 | 469 | sin->sin6_port = inet->inet_dport; |
efe4208f | 470 | sin->sin6_addr = sk->sk_v6_daddr; |
1da177e4 LT |
471 | if (np->sndflow) |
472 | sin->sin6_flowinfo = np->flow_label; | |
473 | } else { | |
efe4208f | 474 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
4e3fd7a0 | 475 | sin->sin6_addr = np->saddr; |
1da177e4 | 476 | else |
efe4208f | 477 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
1da177e4 | 478 | |
c720c7e8 | 479 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 480 | } |
842df073 HFS |
481 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
482 | sk->sk_bound_dev_if); | |
1da177e4 | 483 | *uaddr_len = sizeof(*sin); |
a02cec21 | 484 | return 0; |
1da177e4 | 485 | } |
7159039a YH |
486 | EXPORT_SYMBOL(inet6_getname); |
487 | ||
1da177e4 LT |
488 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
489 | { | |
490 | struct sock *sk = sock->sk; | |
3b1e0a65 | 491 | struct net *net = sock_net(sk); |
1da177e4 | 492 | |
647c0c70 | 493 | switch (cmd) { |
1da177e4 LT |
494 | case SIOCGSTAMP: |
495 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
496 | ||
ae40eb1e ED |
497 | case SIOCGSTAMPNS: |
498 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
499 | ||
1da177e4 LT |
500 | case SIOCADDRT: |
501 | case SIOCDELRT: | |
1ab1457c | 502 | |
a02cec21 | 503 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
504 | |
505 | case SIOCSIFADDR: | |
af284937 | 506 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 507 | case SIOCDIFADDR: |
af284937 | 508 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 509 | case SIOCSIFDSTADDR: |
af284937 | 510 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 511 | default: |
b5e5fa5e CH |
512 | if (!sk->sk_prot->ioctl) |
513 | return -ENOIOCTLCMD; | |
514 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
515 | } |
516 | /*NOTREACHED*/ | |
a02cec21 | 517 | return 0; |
1da177e4 | 518 | } |
7159039a YH |
519 | EXPORT_SYMBOL(inet6_ioctl); |
520 | ||
90ddc4f0 | 521 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
522 | .family = PF_INET6, |
523 | .owner = THIS_MODULE, | |
524 | .release = inet6_release, | |
525 | .bind = inet6_bind, | |
526 | .connect = inet_stream_connect, /* ok */ | |
527 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
528 | .accept = inet_accept, /* ok */ | |
529 | .getname = inet6_getname, | |
530 | .poll = tcp_poll, /* ok */ | |
531 | .ioctl = inet6_ioctl, /* must change */ | |
532 | .listen = inet_listen, /* ok */ | |
533 | .shutdown = inet_shutdown, /* ok */ | |
534 | .setsockopt = sock_common_setsockopt, /* ok */ | |
535 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
536 | .sendmsg = inet_sendmsg, /* ok */ |
537 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 538 | .mmap = sock_no_mmap, |
7ba42910 | 539 | .sendpage = inet_sendpage, |
a0974dd3 | 540 | .splice_read = tcp_splice_read, |
3fdadf7d | 541 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
542 | .compat_setsockopt = compat_sock_common_setsockopt, |
543 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 544 | #endif |
1da177e4 LT |
545 | }; |
546 | ||
90ddc4f0 | 547 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
548 | .family = PF_INET6, |
549 | .owner = THIS_MODULE, | |
550 | .release = inet6_release, | |
551 | .bind = inet6_bind, | |
552 | .connect = inet_dgram_connect, /* ok */ | |
553 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
554 | .accept = sock_no_accept, /* a do nothing */ | |
555 | .getname = inet6_getname, | |
556 | .poll = udp_poll, /* ok */ | |
557 | .ioctl = inet6_ioctl, /* must change */ | |
558 | .listen = sock_no_listen, /* ok */ | |
559 | .shutdown = inet_shutdown, /* ok */ | |
560 | .setsockopt = sock_common_setsockopt, /* ok */ | |
561 | .getsockopt = sock_common_getsockopt, /* ok */ | |
562 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 563 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
564 | .mmap = sock_no_mmap, |
565 | .sendpage = sock_no_sendpage, | |
627d2d6b | 566 | .set_peek_off = sk_set_peek_off, |
3fdadf7d | 567 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
568 | .compat_setsockopt = compat_sock_common_setsockopt, |
569 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 570 | #endif |
1da177e4 LT |
571 | }; |
572 | ||
ec1b4cf7 | 573 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
574 | .family = PF_INET6, |
575 | .create = inet6_create, | |
576 | .owner = THIS_MODULE, | |
577 | }; | |
578 | ||
87c3efbf | 579 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
580 | { |
581 | struct list_head *lh; | |
582 | struct inet_protosw *answer; | |
1da177e4 | 583 | struct list_head *last_perm; |
87c3efbf DL |
584 | int protocol = p->protocol; |
585 | int ret; | |
1da177e4 LT |
586 | |
587 | spin_lock_bh(&inetsw6_lock); | |
588 | ||
87c3efbf | 589 | ret = -EINVAL; |
1da177e4 LT |
590 | if (p->type >= SOCK_MAX) |
591 | goto out_illegal; | |
592 | ||
593 | /* If we are trying to override a permanent protocol, bail. */ | |
594 | answer = NULL; | |
87c3efbf | 595 | ret = -EPERM; |
1da177e4 LT |
596 | last_perm = &inetsw6[p->type]; |
597 | list_for_each(lh, &inetsw6[p->type]) { | |
598 | answer = list_entry(lh, struct inet_protosw, list); | |
599 | ||
600 | /* Check only the non-wild match. */ | |
601 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
602 | if (protocol == answer->protocol) | |
603 | break; | |
604 | last_perm = lh; | |
605 | } | |
606 | ||
607 | answer = NULL; | |
608 | } | |
609 | if (answer) | |
610 | goto out_permanent; | |
611 | ||
612 | /* Add the new entry after the last permanent entry if any, so that | |
613 | * the new entry does not override a permanent entry when matched with | |
614 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 615 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
616 | * system automatically returns to the old behavior. |
617 | */ | |
618 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 619 | ret = 0; |
1da177e4 LT |
620 | out: |
621 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 622 | return ret; |
1da177e4 LT |
623 | |
624 | out_permanent: | |
f3213831 | 625 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
626 | goto out; |
627 | ||
628 | out_illegal: | |
f3213831 | 629 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
630 | p->type); |
631 | goto out; | |
632 | } | |
7159039a YH |
633 | EXPORT_SYMBOL(inet6_register_protosw); |
634 | ||
1da177e4 LT |
635 | void |
636 | inet6_unregister_protosw(struct inet_protosw *p) | |
637 | { | |
638 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 639 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
640 | p->protocol); |
641 | } else { | |
642 | spin_lock_bh(&inetsw6_lock); | |
643 | list_del_rcu(&p->list); | |
644 | spin_unlock_bh(&inetsw6_lock); | |
645 | ||
646 | synchronize_net(); | |
647 | } | |
648 | } | |
7159039a YH |
649 | EXPORT_SYMBOL(inet6_unregister_protosw); |
650 | ||
b9750ce1 ACM |
651 | int inet6_sk_rebuild_header(struct sock *sk) |
652 | { | |
b9750ce1 | 653 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 654 | struct dst_entry *dst; |
b9750ce1 ACM |
655 | |
656 | dst = __sk_dst_check(sk, np->dst_cookie); | |
657 | ||
63159f29 | 658 | if (!dst) { |
b9750ce1 | 659 | struct inet_sock *inet = inet_sk(sk); |
20c59de2 | 660 | struct in6_addr *final_p, final; |
4c9483b2 DM |
661 | struct flowi6 fl6; |
662 | ||
663 | memset(&fl6, 0, sizeof(fl6)); | |
664 | fl6.flowi6_proto = sk->sk_protocol; | |
efe4208f | 665 | fl6.daddr = sk->sk_v6_daddr; |
4e3fd7a0 | 666 | fl6.saddr = np->saddr; |
4c9483b2 DM |
667 | fl6.flowlabel = np->flow_label; |
668 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
669 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
670 | fl6.fl6_dport = inet->inet_dport; |
671 | fl6.fl6_sport = inet->inet_sport; | |
4c9483b2 DM |
672 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
673 | ||
45f6fad8 ED |
674 | rcu_read_lock(); |
675 | final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), | |
676 | &final); | |
677 | rcu_read_unlock(); | |
4c9483b2 | 678 | |
0e0d44ab | 679 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
68d0c6d3 | 680 | if (IS_ERR(dst)) { |
b9750ce1 | 681 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
682 | sk->sk_err_soft = -PTR_ERR(dst); |
683 | return PTR_ERR(dst); | |
b9750ce1 ACM |
684 | } |
685 | ||
6bd4f355 | 686 | ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
687 | } |
688 | ||
689 | return 0; | |
690 | } | |
b9750ce1 ACM |
691 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
692 | ||
a224772d ED |
693 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, |
694 | const struct inet6_skb_parm *opt) | |
399c07de | 695 | { |
92113bfd | 696 | const struct ipv6_pinfo *np = inet6_sk(sk); |
399c07de ACM |
697 | |
698 | if (np->rxopt.all) { | |
8b58a398 FW |
699 | if (((opt->flags & IP6SKB_HOPBYHOP) && |
700 | (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) || | |
ac1eabca | 701 | (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) && |
399c07de ACM |
702 | np->rxopt.bits.rxflow) || |
703 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
704 | np->rxopt.bits.osrcrt)) || | |
705 | ((opt->dst1 || opt->dst0) && | |
706 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 707 | return true; |
399c07de | 708 | } |
92113bfd | 709 | return false; |
399c07de | 710 | } |
399c07de ACM |
711 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
712 | ||
7546dd97 | 713 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 714 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 715 | .func = ipv6_rcv, |
22061d80 VY |
716 | }; |
717 | ||
662397fd YH |
718 | static int __init ipv6_packet_init(void) |
719 | { | |
720 | dev_add_pack(&ipv6_packet_type); | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static void ipv6_packet_cleanup(void) | |
725 | { | |
726 | dev_remove_pack(&ipv6_packet_type); | |
727 | } | |
728 | ||
e43291cb DL |
729 | static int __net_init ipv6_init_mibs(struct net *net) |
730 | { | |
827da44c JS |
731 | int i; |
732 | ||
698365fa WC |
733 | net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); |
734 | if (!net->mib.udp_stats_in6) | |
0c7ed677 | 735 | return -ENOMEM; |
698365fa WC |
736 | net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); |
737 | if (!net->mib.udplite_stats_in6) | |
be713a44 | 738 | goto err_udplite_mib; |
698365fa WC |
739 | net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); |
740 | if (!net->mib.ipv6_statistics) | |
9261e537 | 741 | goto err_ip_mib; |
827da44c JS |
742 | |
743 | for_each_possible_cpu(i) { | |
744 | struct ipstats_mib *af_inet6_stats; | |
698365fa | 745 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); |
827da44c | 746 | u64_stats_init(&af_inet6_stats->syncp); |
827da44c JS |
747 | } |
748 | ||
749 | ||
698365fa WC |
750 | net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); |
751 | if (!net->mib.icmpv6_statistics) | |
9261e537 | 752 | goto err_icmp_mib; |
2a24444f ED |
753 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
754 | GFP_KERNEL); | |
755 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 756 | goto err_icmpmsg_mib; |
e43291cb | 757 | return 0; |
be713a44 | 758 | |
9261e537 | 759 | err_icmpmsg_mib: |
698365fa | 760 | free_percpu(net->mib.icmpv6_statistics); |
9261e537 | 761 | err_icmp_mib: |
698365fa | 762 | free_percpu(net->mib.ipv6_statistics); |
9261e537 | 763 | err_ip_mib: |
698365fa | 764 | free_percpu(net->mib.udplite_stats_in6); |
be713a44 | 765 | err_udplite_mib: |
698365fa | 766 | free_percpu(net->mib.udp_stats_in6); |
be713a44 | 767 | return -ENOMEM; |
e43291cb DL |
768 | } |
769 | ||
2c8c1e72 | 770 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 771 | { |
698365fa WC |
772 | free_percpu(net->mib.udp_stats_in6); |
773 | free_percpu(net->mib.udplite_stats_in6); | |
774 | free_percpu(net->mib.ipv6_statistics); | |
775 | free_percpu(net->mib.icmpv6_statistics); | |
2a24444f | 776 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
777 | } |
778 | ||
e7dc8494 | 779 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 780 | { |
0c96d8c5 DL |
781 | int err = 0; |
782 | ||
99bc9c4e | 783 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 784 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
6444f72b | 785 | net->ipv6.sysctl.flowlabel_consistency = 1; |
42240901 | 786 | net->ipv6.sysctl.auto_flowlabels = IP6_DEFAULT_AUTO_FLOW_LABELS; |
1855b7c3 HFS |
787 | net->ipv6.sysctl.idgen_retries = 3; |
788 | net->ipv6.sysctl.idgen_delay = 1 * HZ; | |
be26849b | 789 | net->ipv6.sysctl.flowlabel_state_ranges = 0; |
812918c4 | 790 | atomic_set(&net->ipv6.fib6_sernum, 1); |
e71e0349 | 791 | |
e43291cb DL |
792 | err = ipv6_init_mibs(net); |
793 | if (err) | |
794 | return err; | |
0c96d8c5 DL |
795 | #ifdef CONFIG_PROC_FS |
796 | err = udp6_proc_init(net); | |
797 | if (err) | |
798 | goto out; | |
6f8b13bc DL |
799 | err = tcp6_proc_init(net); |
800 | if (err) | |
801 | goto proc_tcp6_fail; | |
6ab57e7e DL |
802 | err = ac6_proc_init(net); |
803 | if (err) | |
804 | goto proc_ac6_fail; | |
0c96d8c5 DL |
805 | #endif |
806 | return err; | |
6f8b13bc DL |
807 | |
808 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
809 | proc_ac6_fail: |
810 | tcp6_proc_exit(net); | |
6f8b13bc DL |
811 | proc_tcp6_fail: |
812 | udp6_proc_exit(net); | |
e43291cb DL |
813 | out: |
814 | ipv6_cleanup_mibs(net); | |
815 | return err; | |
6f8b13bc | 816 | #endif |
81c1c178 DL |
817 | } |
818 | ||
2c8c1e72 | 819 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 820 | { |
0c96d8c5 DL |
821 | #ifdef CONFIG_PROC_FS |
822 | udp6_proc_exit(net); | |
6f8b13bc | 823 | tcp6_proc_exit(net); |
6ab57e7e | 824 | ac6_proc_exit(net); |
0c96d8c5 | 825 | #endif |
e43291cb | 826 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
827 | } |
828 | ||
829 | static struct pernet_operations inet6_net_ops = { | |
830 | .init = inet6_net_init, | |
831 | .exit = inet6_net_exit, | |
832 | }; | |
833 | ||
5f81bd2e CW |
834 | static const struct ipv6_stub ipv6_stub_impl = { |
835 | .ipv6_sock_mc_join = ipv6_sock_mc_join, | |
836 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, | |
837 | .ipv6_dst_lookup = ip6_dst_lookup, | |
838 | .udpv6_encap_enable = udpv6_encap_enable, | |
f564f45c | 839 | .ndisc_send_na = ndisc_send_na, |
e15a00aa | 840 | .nd_tbl = &nd_tbl, |
5f81bd2e CW |
841 | }; |
842 | ||
1da177e4 LT |
843 | static int __init inet6_init(void) |
844 | { | |
1ab1457c | 845 | struct list_head *r; |
fe7ca2e1 | 846 | int err = 0; |
1da177e4 | 847 | |
b4772ef8 | 848 | sock_skb_cb_check_size(sizeof(struct inet6_skb_parm)); |
ef047f5e | 849 | |
fe7ca2e1 | 850 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 851 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
852 | INIT_LIST_HEAD(r); |
853 | ||
56d417b1 | 854 | if (disable_ipv6_mod) { |
f3213831 | 855 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
856 | goto out; |
857 | } | |
858 | ||
1da177e4 LT |
859 | err = proto_register(&tcpv6_prot, 1); |
860 | if (err) | |
861 | goto out; | |
862 | ||
863 | err = proto_register(&udpv6_prot, 1); | |
864 | if (err) | |
865 | goto out_unregister_tcp_proto; | |
866 | ||
ba4e58ec | 867 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
868 | if (err) |
869 | goto out_unregister_udp_proto; | |
870 | ||
ba4e58ec GR |
871 | err = proto_register(&rawv6_prot, 1); |
872 | if (err) | |
873 | goto out_unregister_udplite_proto; | |
874 | ||
6d0bfe22 LC |
875 | err = proto_register(&pingv6_prot, 1); |
876 | if (err) | |
877 | goto out_unregister_ping_proto; | |
1da177e4 | 878 | |
1da177e4 LT |
879 | /* We MUST register RAW sockets before we create the ICMP6, |
880 | * IGMP6, or NDISC control sockets. | |
881 | */ | |
7f4e4868 DL |
882 | err = rawv6_init(); |
883 | if (err) | |
884 | goto out_unregister_raw_proto; | |
1da177e4 LT |
885 | |
886 | /* Register the family here so that the init calls below will | |
887 | * be able to create sockets. (?? is this dangerous ??) | |
888 | */ | |
8eb55910 DM |
889 | err = sock_register(&inet6_family_ops); |
890 | if (err) | |
7f4e4868 | 891 | goto out_sock_register_fail; |
1da177e4 | 892 | |
1da177e4 LT |
893 | /* |
894 | * ipngwg API draft makes clear that the correct semantics | |
895 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 896 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
897 | * able to communicate via both network protocols. |
898 | */ | |
899 | ||
81c1c178 DL |
900 | err = register_pernet_subsys(&inet6_net_ops); |
901 | if (err) | |
902 | goto register_pernet_fail; | |
9b0f976f | 903 | err = icmpv6_init(); |
1da177e4 LT |
904 | if (err) |
905 | goto icmp_fail; | |
623d1a1a WC |
906 | err = ip6_mr_init(); |
907 | if (err) | |
908 | goto ipmr_fail; | |
9b0f976f | 909 | err = ndisc_init(); |
1da177e4 LT |
910 | if (err) |
911 | goto ndisc_fail; | |
9b0f976f | 912 | err = igmp6_init(); |
1da177e4 LT |
913 | if (err) |
914 | goto igmp_fail; | |
5f81bd2e CW |
915 | |
916 | ipv6_stub = &ipv6_stub_impl; | |
917 | ||
2cc7d573 HW |
918 | err = ipv6_netfilter_init(); |
919 | if (err) | |
920 | goto netfilter_fail; | |
1da177e4 LT |
921 | /* Create /proc/foo6 entries. */ |
922 | #ifdef CONFIG_PROC_FS | |
923 | err = -ENOMEM; | |
924 | if (raw6_proc_init()) | |
925 | goto proc_raw6_fail; | |
ba4e58ec GR |
926 | if (udplite6_proc_init()) |
927 | goto proc_udplite6_fail; | |
1da177e4 LT |
928 | if (ipv6_misc_proc_init()) |
929 | goto proc_misc6_fail; | |
1da177e4 LT |
930 | if (if6_proc_init()) |
931 | goto proc_if6_fail; | |
932 | #endif | |
e2fddf5e DL |
933 | err = ip6_route_init(); |
934 | if (err) | |
935 | goto ip6_route_fail; | |
2c861cc6 MK |
936 | err = ndisc_late_init(); |
937 | if (err) | |
938 | goto ndisc_late_fail; | |
0a3e78ac DL |
939 | err = ip6_flowlabel_init(); |
940 | if (err) | |
941 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
942 | err = addrconf_init(); |
943 | if (err) | |
944 | goto addrconf_fail; | |
1da177e4 LT |
945 | |
946 | /* Init v6 extension headers. */ | |
248b238d DL |
947 | err = ipv6_exthdrs_init(); |
948 | if (err) | |
949 | goto ipv6_exthdrs_fail; | |
950 | ||
853cbbaa DL |
951 | err = ipv6_frag_init(); |
952 | if (err) | |
953 | goto ipv6_frag_fail; | |
1da177e4 LT |
954 | |
955 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
956 | err = udpv6_init(); |
957 | if (err) | |
958 | goto udpv6_fail; | |
e2ed4052 | 959 | |
7f4e4868 DL |
960 | err = udplitev6_init(); |
961 | if (err) | |
962 | goto udplitev6_fail; | |
963 | ||
a6024562 TH |
964 | err = udpv6_offload_init(); |
965 | if (err) | |
966 | goto udpv6_offload_fail; | |
967 | ||
7f4e4868 DL |
968 | err = tcpv6_init(); |
969 | if (err) | |
970 | goto tcpv6_fail; | |
971 | ||
972 | err = ipv6_packet_init(); | |
973 | if (err) | |
974 | goto ipv6_packet_fail; | |
94911fe3 | 975 | |
6d0bfe22 LC |
976 | err = pingv6_init(); |
977 | if (err) | |
978 | goto pingv6_fail; | |
979 | ||
94911fe3 BT |
980 | #ifdef CONFIG_SYSCTL |
981 | err = ipv6_sysctl_register(); | |
982 | if (err) | |
983 | goto sysctl_fail; | |
984 | #endif | |
1da177e4 LT |
985 | out: |
986 | return err; | |
987 | ||
94911fe3 BT |
988 | #ifdef CONFIG_SYSCTL |
989 | sysctl_fail: | |
eca42aaf | 990 | pingv6_exit(); |
94911fe3 | 991 | #endif |
6d0bfe22 | 992 | pingv6_fail: |
eca42aaf | 993 | ipv6_packet_cleanup(); |
7f4e4868 DL |
994 | ipv6_packet_fail: |
995 | tcpv6_exit(); | |
996 | tcpv6_fail: | |
a6024562 TH |
997 | udpv6_offload_exit(); |
998 | udpv6_offload_fail: | |
7f4e4868 DL |
999 | udplitev6_exit(); |
1000 | udplitev6_fail: | |
1001 | udpv6_exit(); | |
1002 | udpv6_fail: | |
1003 | ipv6_frag_exit(); | |
853cbbaa DL |
1004 | ipv6_frag_fail: |
1005 | ipv6_exthdrs_exit(); | |
248b238d DL |
1006 | ipv6_exthdrs_fail: |
1007 | addrconf_cleanup(); | |
1da177e4 LT |
1008 | addrconf_fail: |
1009 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1010 | ip6_flowlabel_fail: |
2c861cc6 MK |
1011 | ndisc_late_cleanup(); |
1012 | ndisc_late_fail: | |
1da177e4 | 1013 | ip6_route_cleanup(); |
e2fddf5e | 1014 | ip6_route_fail: |
1da177e4 LT |
1015 | #ifdef CONFIG_PROC_FS |
1016 | if6_proc_exit(); | |
1017 | proc_if6_fail: | |
1da177e4 LT |
1018 | ipv6_misc_proc_exit(); |
1019 | proc_misc6_fail: | |
ba4e58ec GR |
1020 | udplite6_proc_exit(); |
1021 | proc_udplite6_fail: | |
1da177e4 LT |
1022 | raw6_proc_exit(); |
1023 | proc_raw6_fail: | |
1024 | #endif | |
2cc7d573 HW |
1025 | ipv6_netfilter_fini(); |
1026 | netfilter_fail: | |
1da177e4 LT |
1027 | igmp6_cleanup(); |
1028 | igmp_fail: | |
1029 | ndisc_cleanup(); | |
1030 | ndisc_fail: | |
623d1a1a WC |
1031 | ip6_mr_cleanup(); |
1032 | ipmr_fail: | |
1da177e4 LT |
1033 | icmpv6_cleanup(); |
1034 | icmp_fail: | |
81c1c178 DL |
1035 | unregister_pernet_subsys(&inet6_net_ops); |
1036 | register_pernet_fail: | |
8eb55910 | 1037 | sock_unregister(PF_INET6); |
e2fddf5e | 1038 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1039 | out_sock_register_fail: |
1040 | rawv6_exit(); | |
6d0bfe22 LC |
1041 | out_unregister_ping_proto: |
1042 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1043 | out_unregister_raw_proto: |
1044 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1045 | out_unregister_udplite_proto: |
1046 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1047 | out_unregister_udp_proto: |
1048 | proto_unregister(&udpv6_prot); | |
1049 | out_unregister_tcp_proto: | |
1050 | proto_unregister(&tcpv6_prot); | |
1051 | goto out; | |
1052 | } | |
1053 | module_init(inet6_init); | |
1054 | ||
1da177e4 | 1055 | MODULE_ALIAS_NETPROTO(PF_INET6); |