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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 | * | |
1da177e4 LT |
10 | * Fixes: |
11 | * piggy, Karl Knutson : Socket protocol table | |
12 | * Hideaki YOSHIFUJI : sin6_scope_id support | |
13 | * Arnaldo Melo : check proc_net_create return, cleanups | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
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. | |
19 | */ | |
20 | ||
21 | ||
22 | #include <linux/module.h> | |
4fc268d2 | 23 | #include <linux/capability.h> |
1da177e4 LT |
24 | #include <linux/errno.h> |
25 | #include <linux/types.h> | |
26 | #include <linux/socket.h> | |
27 | #include <linux/in.h> | |
28 | #include <linux/kernel.h> | |
1da177e4 LT |
29 | #include <linux/timer.h> |
30 | #include <linux/string.h> | |
31 | #include <linux/sockios.h> | |
32 | #include <linux/net.h> | |
33 | #include <linux/fcntl.h> | |
34 | #include <linux/mm.h> | |
35 | #include <linux/interrupt.h> | |
36 | #include <linux/proc_fs.h> | |
37 | #include <linux/stat.h> | |
38 | #include <linux/init.h> | |
39 | ||
40 | #include <linux/inet.h> | |
41 | #include <linux/netdevice.h> | |
42 | #include <linux/icmpv6.h> | |
2cc7d573 | 43 | #include <linux/netfilter_ipv6.h> |
1da177e4 LT |
44 | |
45 | #include <net/ip.h> | |
46 | #include <net/ipv6.h> | |
47 | #include <net/udp.h> | |
ba4e58ec | 48 | #include <net/udplite.h> |
1da177e4 LT |
49 | #include <net/tcp.h> |
50 | #include <net/ipip.h> | |
51 | #include <net/protocol.h> | |
52 | #include <net/inet_common.h> | |
53 | #include <net/transp_v6.h> | |
54 | #include <net/ip6_route.h> | |
55 | #include <net/addrconf.h> | |
56 | #ifdef CONFIG_IPV6_TUNNEL | |
57 | #include <net/ip6_tunnel.h> | |
58 | #endif | |
59 | ||
60 | #include <asm/uaccess.h> | |
61 | #include <asm/system.h> | |
7bc570c8 | 62 | #include <linux/mroute6.h> |
1da177e4 LT |
63 | |
64 | MODULE_AUTHOR("Cast of dozens"); | |
65 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
66 | MODULE_LICENSE("GPL"); | |
67 | ||
f1267347 | 68 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
69 | * build a new socket. |
70 | */ | |
71 | static struct list_head inetsw6[SOCK_MAX]; | |
72 | static DEFINE_SPINLOCK(inetsw6_lock); | |
73 | ||
1da177e4 LT |
74 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
75 | { | |
76 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
77 | ||
78 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
79 | } | |
80 | ||
1b8d7ae4 | 81 | static int inet6_create(struct net *net, struct socket *sock, int protocol) |
1da177e4 LT |
82 | { |
83 | struct inet_sock *inet; | |
84 | struct ipv6_pinfo *np; | |
85 | struct sock *sk; | |
1da177e4 LT |
86 | struct inet_protosw *answer; |
87 | struct proto *answer_prot; | |
88 | unsigned char answer_flags; | |
89 | char answer_no_check; | |
af1afe86 YH |
90 | int try_loading_module = 0; |
91 | int err; | |
1da177e4 | 92 | |
b3da2cf3 DM |
93 | if (sock->type != SOCK_RAW && |
94 | sock->type != SOCK_DGRAM && | |
95 | !inet_ehash_secret) | |
96 | build_ehash_secret(); | |
97 | ||
1da177e4 | 98 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
99 | lookup_protocol: |
100 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 101 | rcu_read_lock(); |
696adfe8 | 102 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 103 | |
696adfe8 | 104 | err = 0; |
1da177e4 LT |
105 | /* Check the non-wild match. */ |
106 | if (protocol == answer->protocol) { | |
107 | if (protocol != IPPROTO_IP) | |
108 | break; | |
109 | } else { | |
110 | /* Check for the two wild cases. */ | |
111 | if (IPPROTO_IP == protocol) { | |
112 | protocol = answer->protocol; | |
113 | break; | |
114 | } | |
115 | if (IPPROTO_IP == answer->protocol) | |
116 | break; | |
117 | } | |
af1afe86 | 118 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
119 | } |
120 | ||
696adfe8 | 121 | if (err) { |
af1afe86 YH |
122 | if (try_loading_module < 2) { |
123 | rcu_read_unlock(); | |
124 | /* | |
125 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
126 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
127 | */ | |
128 | if (++try_loading_module == 1) | |
129 | request_module("net-pf-%d-proto-%d-type-%d", | |
130 | PF_INET6, protocol, sock->type); | |
131 | /* | |
132 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
133 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
134 | */ | |
135 | else | |
136 | request_module("net-pf-%d-proto-%d", | |
137 | PF_INET6, protocol); | |
138 | goto lookup_protocol; | |
139 | } else | |
140 | goto out_rcu_unlock; | |
141 | } | |
142 | ||
143 | err = -EPERM; | |
1da177e4 LT |
144 | if (answer->capability > 0 && !capable(answer->capability)) |
145 | goto out_rcu_unlock; | |
1da177e4 LT |
146 | |
147 | sock->ops = answer->ops; | |
1da177e4 LT |
148 | answer_prot = answer->prot; |
149 | answer_no_check = answer->no_check; | |
150 | answer_flags = answer->flags; | |
151 | rcu_read_unlock(); | |
152 | ||
547b792c | 153 | WARN_ON(answer_prot->slab == NULL); |
1da177e4 | 154 | |
af1afe86 | 155 | err = -ENOBUFS; |
6257ff21 | 156 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
157 | if (sk == NULL) |
158 | goto out; | |
159 | ||
160 | sock_init_data(sock, sk); | |
161 | ||
af1afe86 | 162 | err = 0; |
1da177e4 LT |
163 | sk->sk_no_check = answer_no_check; |
164 | if (INET_PROTOSW_REUSE & answer_flags) | |
165 | sk->sk_reuse = 1; | |
166 | ||
167 | inet = inet_sk(sk); | |
469de9b9 | 168 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
169 | |
170 | if (SOCK_RAW == sock->type) { | |
171 | inet->num = protocol; | |
172 | if (IPPROTO_RAW == protocol) | |
173 | inet->hdrincl = 1; | |
174 | } | |
175 | ||
e6848976 | 176 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
177 | sk->sk_family = PF_INET6; |
178 | sk->sk_protocol = protocol; | |
179 | ||
180 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
181 | ||
182 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
183 | np->hop_limit = -1; | |
184 | np->mcast_hops = -1; | |
185 | np->mc_loop = 1; | |
186 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
2e761e05 | 187 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 188 | |
1da177e4 LT |
189 | /* Init the ipv4 part of the socket since we can have sockets |
190 | * using v6 API for ipv4. | |
191 | */ | |
192 | inet->uc_ttl = -1; | |
193 | ||
194 | inet->mc_loop = 1; | |
195 | inet->mc_ttl = 1; | |
196 | inet->mc_index = 0; | |
197 | inet->mc_list = NULL; | |
198 | ||
199 | if (ipv4_config.no_pmtu_disc) | |
200 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
201 | else | |
202 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 203 | /* |
e6848976 ACM |
204 | * Increment only the relevant sk_prot->socks debug field, this changes |
205 | * the previous behaviour of incrementing both the equivalent to | |
206 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
207 | * | |
208 | * This allows better debug granularity as we'll know exactly how many | |
209 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
210 | * transport protocol socks. -acme | |
211 | */ | |
212 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 213 | |
1da177e4 LT |
214 | if (inet->num) { |
215 | /* It assumes that any protocol which allows | |
216 | * the user to assign a number at socket | |
217 | * creation time automatically shares. | |
218 | */ | |
e69a4adc | 219 | inet->sport = htons(inet->num); |
1da177e4 LT |
220 | sk->sk_prot->hash(sk); |
221 | } | |
222 | if (sk->sk_prot->init) { | |
af1afe86 YH |
223 | err = sk->sk_prot->init(sk); |
224 | if (err) { | |
1da177e4 LT |
225 | sk_common_release(sk); |
226 | goto out; | |
227 | } | |
228 | } | |
229 | out: | |
af1afe86 | 230 | return err; |
1da177e4 LT |
231 | out_rcu_unlock: |
232 | rcu_read_unlock(); | |
233 | goto out; | |
234 | } | |
235 | ||
236 | ||
237 | /* bind for INET6 API */ | |
238 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
239 | { | |
240 | struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; | |
241 | struct sock *sk = sock->sk; | |
242 | struct inet_sock *inet = inet_sk(sk); | |
243 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 244 | struct net *net = sock_net(sk); |
fd683222 | 245 | __be32 v4addr = 0; |
1da177e4 LT |
246 | unsigned short snum; |
247 | int addr_type = 0; | |
248 | int err = 0; | |
249 | ||
250 | /* If the socket has its own bind function then use it. */ | |
251 | if (sk->sk_prot->bind) | |
252 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
253 | ||
254 | if (addr_len < SIN6_LEN_RFC2133) | |
255 | return -EINVAL; | |
256 | addr_type = ipv6_addr_type(&addr->sin6_addr); | |
257 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
258 | return -EINVAL; | |
259 | ||
260 | snum = ntohs(addr->sin6_port); | |
261 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
262 | return -EACCES; | |
263 | ||
264 | lock_sock(sk); | |
265 | ||
266 | /* Check these errors (active socket, double bind). */ | |
267 | if (sk->sk_state != TCP_CLOSE || inet->num) { | |
268 | err = -EINVAL; | |
269 | goto out; | |
270 | } | |
271 | ||
272 | /* Check if the address belongs to the host. */ | |
273 | if (addr_type == IPV6_ADDR_MAPPED) { | |
274 | v4addr = addr->sin6_addr.s6_addr32[3]; | |
075de939 | 275 | if (inet_addr_type(net, v4addr) != RTN_LOCAL) { |
1da177e4 LT |
276 | err = -EADDRNOTAVAIL; |
277 | goto out; | |
278 | } | |
279 | } else { | |
280 | if (addr_type != IPV6_ADDR_ANY) { | |
281 | struct net_device *dev = NULL; | |
282 | ||
283 | if (addr_type & IPV6_ADDR_LINKLOCAL) { | |
284 | if (addr_len >= sizeof(struct sockaddr_in6) && | |
285 | addr->sin6_scope_id) { | |
286 | /* Override any existing binding, if another one | |
287 | * is supplied by user. | |
288 | */ | |
289 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
290 | } | |
1ab1457c | 291 | |
1da177e4 LT |
292 | /* Binding to link-local address requires an interface */ |
293 | if (!sk->sk_bound_dev_if) { | |
294 | err = -EINVAL; | |
295 | goto out; | |
296 | } | |
075de939 | 297 | dev = dev_get_by_index(net, sk->sk_bound_dev_if); |
1da177e4 LT |
298 | if (!dev) { |
299 | err = -ENODEV; | |
300 | goto out; | |
301 | } | |
302 | } | |
303 | ||
304 | /* ipv4 addr of the socket is invalid. Only the | |
305 | * unspecified and mapped address have a v4 equivalent. | |
306 | */ | |
307 | v4addr = LOOPBACK4_IPV6; | |
308 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
075de939 | 309 | if (!ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 310 | dev, 0)) { |
1da177e4 LT |
311 | if (dev) |
312 | dev_put(dev); | |
313 | err = -EADDRNOTAVAIL; | |
314 | goto out; | |
315 | } | |
316 | } | |
317 | if (dev) | |
318 | dev_put(dev); | |
319 | } | |
320 | } | |
321 | ||
322 | inet->rcv_saddr = v4addr; | |
323 | inet->saddr = v4addr; | |
324 | ||
325 | ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); | |
1ab1457c | 326 | |
1da177e4 LT |
327 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
328 | ipv6_addr_copy(&np->saddr, &addr->sin6_addr); | |
329 | ||
330 | /* Make sure we are allowed to bind here. */ | |
331 | if (sk->sk_prot->get_port(sk, snum)) { | |
332 | inet_reset_saddr(sk); | |
333 | err = -EADDRINUSE; | |
334 | goto out; | |
335 | } | |
336 | ||
337 | if (addr_type != IPV6_ADDR_ANY) | |
338 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; | |
339 | if (snum) | |
340 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
e69a4adc | 341 | inet->sport = htons(inet->num); |
1da177e4 LT |
342 | inet->dport = 0; |
343 | inet->daddr = 0; | |
344 | out: | |
345 | release_sock(sk); | |
346 | return err; | |
347 | } | |
348 | ||
7159039a YH |
349 | EXPORT_SYMBOL(inet6_bind); |
350 | ||
1da177e4 LT |
351 | int inet6_release(struct socket *sock) |
352 | { | |
353 | struct sock *sk = sock->sk; | |
354 | ||
355 | if (sk == NULL) | |
356 | return -EINVAL; | |
357 | ||
358 | /* Free mc lists */ | |
359 | ipv6_sock_mc_close(sk); | |
360 | ||
361 | /* Free ac lists */ | |
362 | ipv6_sock_ac_close(sk); | |
363 | ||
364 | return inet_release(sock); | |
365 | } | |
366 | ||
7159039a YH |
367 | EXPORT_SYMBOL(inet6_release); |
368 | ||
7d06b2e0 | 369 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
370 | { |
371 | struct ipv6_pinfo *np = inet6_sk(sk); | |
372 | struct sk_buff *skb; | |
373 | struct ipv6_txoptions *opt; | |
374 | ||
1da177e4 LT |
375 | /* Release rx options */ |
376 | ||
377 | if ((skb = xchg(&np->pktoptions, NULL)) != NULL) | |
378 | kfree_skb(skb); | |
379 | ||
380 | /* Free flowlabels */ | |
381 | fl6_free_socklist(sk); | |
382 | ||
383 | /* Free tx options */ | |
384 | ||
385 | if ((opt = xchg(&np->opt, NULL)) != NULL) | |
386 | sock_kfree_s(sk, opt, opt->tot_len); | |
1da177e4 LT |
387 | } |
388 | ||
3cf3dc6c ACM |
389 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
390 | ||
1da177e4 LT |
391 | /* |
392 | * This does both peername and sockname. | |
393 | */ | |
1ab1457c | 394 | |
1da177e4 LT |
395 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
396 | int *uaddr_len, int peer) | |
397 | { | |
398 | struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; | |
399 | struct sock *sk = sock->sk; | |
400 | struct inet_sock *inet = inet_sk(sk); | |
401 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 402 | |
1da177e4 LT |
403 | sin->sin6_family = AF_INET6; |
404 | sin->sin6_flowinfo = 0; | |
405 | sin->sin6_scope_id = 0; | |
406 | if (peer) { | |
407 | if (!inet->dport) | |
408 | return -ENOTCONN; | |
409 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
410 | peer == 1) | |
411 | return -ENOTCONN; | |
412 | sin->sin6_port = inet->dport; | |
413 | ipv6_addr_copy(&sin->sin6_addr, &np->daddr); | |
414 | if (np->sndflow) | |
415 | sin->sin6_flowinfo = np->flow_label; | |
416 | } else { | |
417 | if (ipv6_addr_any(&np->rcv_saddr)) | |
418 | ipv6_addr_copy(&sin->sin6_addr, &np->saddr); | |
419 | else | |
420 | ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); | |
421 | ||
422 | sin->sin6_port = inet->sport; | |
423 | } | |
424 | if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
425 | sin->sin6_scope_id = sk->sk_bound_dev_if; | |
426 | *uaddr_len = sizeof(*sin); | |
427 | return(0); | |
428 | } | |
429 | ||
7159039a YH |
430 | EXPORT_SYMBOL(inet6_getname); |
431 | ||
1da177e4 LT |
432 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
433 | { | |
434 | struct sock *sk = sock->sk; | |
3b1e0a65 | 435 | struct net *net = sock_net(sk); |
1da177e4 | 436 | |
1ab1457c | 437 | switch(cmd) |
1da177e4 LT |
438 | { |
439 | case SIOCGSTAMP: | |
440 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
441 | ||
ae40eb1e ED |
442 | case SIOCGSTAMPNS: |
443 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
444 | ||
1da177e4 LT |
445 | case SIOCADDRT: |
446 | case SIOCDELRT: | |
1ab1457c | 447 | |
5578689a | 448 | return(ipv6_route_ioctl(net, cmd, (void __user *)arg)); |
1da177e4 LT |
449 | |
450 | case SIOCSIFADDR: | |
af284937 | 451 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 452 | case SIOCDIFADDR: |
af284937 | 453 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 454 | case SIOCSIFDSTADDR: |
af284937 | 455 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 456 | default: |
b5e5fa5e CH |
457 | if (!sk->sk_prot->ioctl) |
458 | return -ENOIOCTLCMD; | |
459 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
460 | } |
461 | /*NOTREACHED*/ | |
462 | return(0); | |
463 | } | |
464 | ||
7159039a YH |
465 | EXPORT_SYMBOL(inet6_ioctl); |
466 | ||
90ddc4f0 | 467 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
468 | .family = PF_INET6, |
469 | .owner = THIS_MODULE, | |
470 | .release = inet6_release, | |
471 | .bind = inet6_bind, | |
472 | .connect = inet_stream_connect, /* ok */ | |
473 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
474 | .accept = inet_accept, /* ok */ | |
475 | .getname = inet6_getname, | |
476 | .poll = tcp_poll, /* ok */ | |
477 | .ioctl = inet6_ioctl, /* must change */ | |
478 | .listen = inet_listen, /* ok */ | |
479 | .shutdown = inet_shutdown, /* ok */ | |
480 | .setsockopt = sock_common_setsockopt, /* ok */ | |
481 | .getsockopt = sock_common_getsockopt, /* ok */ | |
3516ffb0 | 482 | .sendmsg = tcp_sendmsg, /* ok */ |
543d9cfe ACM |
483 | .recvmsg = sock_common_recvmsg, /* ok */ |
484 | .mmap = sock_no_mmap, | |
485 | .sendpage = tcp_sendpage, | |
a0974dd3 | 486 | .splice_read = tcp_splice_read, |
3fdadf7d | 487 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
488 | .compat_setsockopt = compat_sock_common_setsockopt, |
489 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 490 | #endif |
1da177e4 LT |
491 | }; |
492 | ||
90ddc4f0 | 493 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
494 | .family = PF_INET6, |
495 | .owner = THIS_MODULE, | |
496 | .release = inet6_release, | |
497 | .bind = inet6_bind, | |
498 | .connect = inet_dgram_connect, /* ok */ | |
499 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
500 | .accept = sock_no_accept, /* a do nothing */ | |
501 | .getname = inet6_getname, | |
502 | .poll = udp_poll, /* ok */ | |
503 | .ioctl = inet6_ioctl, /* must change */ | |
504 | .listen = sock_no_listen, /* ok */ | |
505 | .shutdown = inet_shutdown, /* ok */ | |
506 | .setsockopt = sock_common_setsockopt, /* ok */ | |
507 | .getsockopt = sock_common_getsockopt, /* ok */ | |
508 | .sendmsg = inet_sendmsg, /* ok */ | |
509 | .recvmsg = sock_common_recvmsg, /* ok */ | |
510 | .mmap = sock_no_mmap, | |
511 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 512 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
513 | .compat_setsockopt = compat_sock_common_setsockopt, |
514 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 515 | #endif |
1da177e4 LT |
516 | }; |
517 | ||
518 | static struct net_proto_family inet6_family_ops = { | |
519 | .family = PF_INET6, | |
520 | .create = inet6_create, | |
521 | .owner = THIS_MODULE, | |
522 | }; | |
523 | ||
87c3efbf | 524 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
525 | { |
526 | struct list_head *lh; | |
527 | struct inet_protosw *answer; | |
1da177e4 | 528 | struct list_head *last_perm; |
87c3efbf DL |
529 | int protocol = p->protocol; |
530 | int ret; | |
1da177e4 LT |
531 | |
532 | spin_lock_bh(&inetsw6_lock); | |
533 | ||
87c3efbf | 534 | ret = -EINVAL; |
1da177e4 LT |
535 | if (p->type >= SOCK_MAX) |
536 | goto out_illegal; | |
537 | ||
538 | /* If we are trying to override a permanent protocol, bail. */ | |
539 | answer = NULL; | |
87c3efbf | 540 | ret = -EPERM; |
1da177e4 LT |
541 | last_perm = &inetsw6[p->type]; |
542 | list_for_each(lh, &inetsw6[p->type]) { | |
543 | answer = list_entry(lh, struct inet_protosw, list); | |
544 | ||
545 | /* Check only the non-wild match. */ | |
546 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
547 | if (protocol == answer->protocol) | |
548 | break; | |
549 | last_perm = lh; | |
550 | } | |
551 | ||
552 | answer = NULL; | |
553 | } | |
554 | if (answer) | |
555 | goto out_permanent; | |
556 | ||
557 | /* Add the new entry after the last permanent entry if any, so that | |
558 | * the new entry does not override a permanent entry when matched with | |
559 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 560 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
561 | * system automatically returns to the old behavior. |
562 | */ | |
563 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 564 | ret = 0; |
1da177e4 LT |
565 | out: |
566 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 567 | return ret; |
1da177e4 LT |
568 | |
569 | out_permanent: | |
570 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", | |
571 | protocol); | |
572 | goto out; | |
573 | ||
574 | out_illegal: | |
575 | printk(KERN_ERR | |
576 | "Ignoring attempt to register invalid socket type %d.\n", | |
577 | p->type); | |
578 | goto out; | |
579 | } | |
580 | ||
7159039a YH |
581 | EXPORT_SYMBOL(inet6_register_protosw); |
582 | ||
1da177e4 LT |
583 | void |
584 | inet6_unregister_protosw(struct inet_protosw *p) | |
585 | { | |
586 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
587 | printk(KERN_ERR | |
588 | "Attempt to unregister permanent protocol %d.\n", | |
589 | p->protocol); | |
590 | } else { | |
591 | spin_lock_bh(&inetsw6_lock); | |
592 | list_del_rcu(&p->list); | |
593 | spin_unlock_bh(&inetsw6_lock); | |
594 | ||
595 | synchronize_net(); | |
596 | } | |
597 | } | |
598 | ||
7159039a YH |
599 | EXPORT_SYMBOL(inet6_unregister_protosw); |
600 | ||
b9750ce1 ACM |
601 | int inet6_sk_rebuild_header(struct sock *sk) |
602 | { | |
603 | int err; | |
604 | struct dst_entry *dst; | |
605 | struct ipv6_pinfo *np = inet6_sk(sk); | |
606 | ||
607 | dst = __sk_dst_check(sk, np->dst_cookie); | |
608 | ||
609 | if (dst == NULL) { | |
610 | struct inet_sock *inet = inet_sk(sk); | |
611 | struct in6_addr *final_p = NULL, final; | |
612 | struct flowi fl; | |
613 | ||
614 | memset(&fl, 0, sizeof(fl)); | |
615 | fl.proto = sk->sk_protocol; | |
616 | ipv6_addr_copy(&fl.fl6_dst, &np->daddr); | |
617 | ipv6_addr_copy(&fl.fl6_src, &np->saddr); | |
618 | fl.fl6_flowlabel = np->flow_label; | |
619 | fl.oif = sk->sk_bound_dev_if; | |
620 | fl.fl_ip_dport = inet->dport; | |
621 | fl.fl_ip_sport = inet->sport; | |
beb8d13b | 622 | security_sk_classify_flow(sk, &fl); |
b9750ce1 ACM |
623 | |
624 | if (np->opt && np->opt->srcrt) { | |
625 | struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; | |
626 | ipv6_addr_copy(&final, &fl.fl6_dst); | |
627 | ipv6_addr_copy(&fl.fl6_dst, rt0->addr); | |
628 | final_p = &final; | |
629 | } | |
630 | ||
631 | err = ip6_dst_lookup(sk, &dst, &fl); | |
632 | if (err) { | |
633 | sk->sk_route_caps = 0; | |
634 | return err; | |
635 | } | |
636 | if (final_p) | |
637 | ipv6_addr_copy(&fl.fl6_dst, final_p); | |
638 | ||
639 | if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) { | |
640 | sk->sk_err_soft = -err; | |
641 | return err; | |
642 | } | |
643 | ||
8e1ef0a9 | 644 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
645 | } |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
650 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); | |
651 | ||
399c07de ACM |
652 | int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) |
653 | { | |
654 | struct ipv6_pinfo *np = inet6_sk(sk); | |
655 | struct inet6_skb_parm *opt = IP6CB(skb); | |
656 | ||
657 | if (np->rxopt.all) { | |
658 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
659 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
660 | ((IPV6_FLOWINFO_MASK & |
661 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
662 | np->rxopt.bits.rxflow) || |
663 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
664 | np->rxopt.bits.osrcrt)) || | |
665 | ((opt->dst1 || opt->dst0) && | |
666 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
667 | return 1; | |
668 | } | |
669 | return 0; | |
670 | } | |
671 | ||
672 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); | |
673 | ||
662397fd YH |
674 | static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb, |
675 | int proto) | |
676 | { | |
677 | struct inet6_protocol *ops = NULL; | |
678 | ||
679 | for (;;) { | |
680 | struct ipv6_opt_hdr *opth; | |
681 | int len; | |
682 | ||
683 | if (proto != NEXTHDR_HOP) { | |
684 | ops = rcu_dereference(inet6_protos[proto]); | |
685 | ||
686 | if (unlikely(!ops)) | |
687 | break; | |
688 | ||
689 | if (!(ops->flags & INET6_PROTO_GSO_EXTHDR)) | |
690 | break; | |
691 | } | |
692 | ||
693 | if (unlikely(!pskb_may_pull(skb, 8))) | |
694 | break; | |
695 | ||
696 | opth = (void *)skb->data; | |
697 | len = ipv6_optlen(opth); | |
698 | ||
699 | if (unlikely(!pskb_may_pull(skb, len))) | |
700 | break; | |
701 | ||
702 | proto = opth->nexthdr; | |
703 | __skb_pull(skb, len); | |
704 | } | |
705 | ||
706 | return ops; | |
707 | } | |
708 | ||
709 | static int ipv6_gso_send_check(struct sk_buff *skb) | |
710 | { | |
711 | struct ipv6hdr *ipv6h; | |
712 | struct inet6_protocol *ops; | |
713 | int err = -EINVAL; | |
714 | ||
715 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
716 | goto out; | |
717 | ||
718 | ipv6h = ipv6_hdr(skb); | |
719 | __skb_pull(skb, sizeof(*ipv6h)); | |
720 | err = -EPROTONOSUPPORT; | |
721 | ||
722 | rcu_read_lock(); | |
723 | ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); | |
724 | if (likely(ops && ops->gso_send_check)) { | |
725 | skb_reset_transport_header(skb); | |
726 | err = ops->gso_send_check(skb); | |
727 | } | |
728 | rcu_read_unlock(); | |
729 | ||
730 | out: | |
731 | return err; | |
732 | } | |
733 | ||
734 | static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features) | |
735 | { | |
736 | struct sk_buff *segs = ERR_PTR(-EINVAL); | |
737 | struct ipv6hdr *ipv6h; | |
738 | struct inet6_protocol *ops; | |
739 | ||
740 | if (!(features & NETIF_F_V6_CSUM)) | |
741 | features &= ~NETIF_F_SG; | |
742 | ||
743 | if (unlikely(skb_shinfo(skb)->gso_type & | |
744 | ~(SKB_GSO_UDP | | |
745 | SKB_GSO_DODGY | | |
746 | SKB_GSO_TCP_ECN | | |
747 | SKB_GSO_TCPV6 | | |
748 | 0))) | |
749 | goto out; | |
750 | ||
751 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
752 | goto out; | |
753 | ||
754 | ipv6h = ipv6_hdr(skb); | |
755 | __skb_pull(skb, sizeof(*ipv6h)); | |
756 | segs = ERR_PTR(-EPROTONOSUPPORT); | |
757 | ||
758 | rcu_read_lock(); | |
759 | ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); | |
760 | if (likely(ops && ops->gso_segment)) { | |
761 | skb_reset_transport_header(skb); | |
762 | segs = ops->gso_segment(skb, features); | |
763 | } | |
764 | rcu_read_unlock(); | |
765 | ||
766 | if (unlikely(IS_ERR(segs))) | |
767 | goto out; | |
768 | ||
769 | for (skb = segs; skb; skb = skb->next) { | |
770 | ipv6h = ipv6_hdr(skb); | |
771 | ipv6h->payload_len = htons(skb->len - skb->mac_len - | |
772 | sizeof(*ipv6h)); | |
773 | } | |
774 | ||
775 | out: | |
776 | return segs; | |
777 | } | |
778 | ||
779 | static struct packet_type ipv6_packet_type = { | |
780 | .type = __constant_htons(ETH_P_IPV6), | |
781 | .func = ipv6_rcv, | |
782 | .gso_send_check = ipv6_gso_send_check, | |
783 | .gso_segment = ipv6_gso_segment, | |
784 | }; | |
785 | ||
786 | static int __init ipv6_packet_init(void) | |
787 | { | |
788 | dev_add_pack(&ipv6_packet_type); | |
789 | return 0; | |
790 | } | |
791 | ||
792 | static void ipv6_packet_cleanup(void) | |
793 | { | |
794 | dev_remove_pack(&ipv6_packet_type); | |
795 | } | |
796 | ||
1da177e4 LT |
797 | static int __init init_ipv6_mibs(void) |
798 | { | |
c69bce20 YH |
799 | if (snmp_mib_init((void **)ipv6_statistics, |
800 | sizeof(struct ipstats_mib)) < 0) | |
1da177e4 | 801 | goto err_ip_mib; |
c69bce20 YH |
802 | if (snmp_mib_init((void **)icmpv6_statistics, |
803 | sizeof(struct icmpv6_mib)) < 0) | |
1da177e4 | 804 | goto err_icmp_mib; |
14878f75 | 805 | if (snmp_mib_init((void **)icmpv6msg_statistics, |
c69bce20 | 806 | sizeof(struct icmpv6msg_mib)) < 0) |
14878f75 | 807 | goto err_icmpmsg_mib; |
c69bce20 | 808 | if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0) |
1da177e4 | 809 | goto err_udp_mib; |
c69bce20 YH |
810 | if (snmp_mib_init((void **)udplite_stats_in6, |
811 | sizeof (struct udp_mib)) < 0) | |
ba4e58ec | 812 | goto err_udplite_mib; |
1da177e4 LT |
813 | return 0; |
814 | ||
ba4e58ec | 815 | err_udplite_mib: |
7f7d9a6b | 816 | snmp_mib_free((void **)udp_stats_in6); |
1da177e4 | 817 | err_udp_mib: |
14878f75 DS |
818 | snmp_mib_free((void **)icmpv6msg_statistics); |
819 | err_icmpmsg_mib: | |
7f7d9a6b | 820 | snmp_mib_free((void **)icmpv6_statistics); |
1da177e4 | 821 | err_icmp_mib: |
7f7d9a6b | 822 | snmp_mib_free((void **)ipv6_statistics); |
1da177e4 LT |
823 | err_ip_mib: |
824 | return -ENOMEM; | |
1ab1457c | 825 | |
1da177e4 LT |
826 | } |
827 | ||
828 | static void cleanup_ipv6_mibs(void) | |
829 | { | |
7f7d9a6b HX |
830 | snmp_mib_free((void **)ipv6_statistics); |
831 | snmp_mib_free((void **)icmpv6_statistics); | |
dc8a82ad | 832 | snmp_mib_free((void **)icmpv6msg_statistics); |
7f7d9a6b HX |
833 | snmp_mib_free((void **)udp_stats_in6); |
834 | snmp_mib_free((void **)udplite_stats_in6); | |
1da177e4 LT |
835 | } |
836 | ||
81c1c178 DL |
837 | static int inet6_net_init(struct net *net) |
838 | { | |
0c96d8c5 DL |
839 | int err = 0; |
840 | ||
99bc9c4e | 841 | net->ipv6.sysctl.bindv6only = 0; |
4990509f DL |
842 | net->ipv6.sysctl.flush_delay = 0; |
843 | net->ipv6.sysctl.ip6_rt_max_size = 4096; | |
844 | net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; | |
845 | net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; | |
846 | net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; | |
847 | net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; | |
848 | net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; | |
849 | net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; | |
41a76906 | 850 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 851 | |
0c96d8c5 DL |
852 | #ifdef CONFIG_PROC_FS |
853 | err = udp6_proc_init(net); | |
854 | if (err) | |
855 | goto out; | |
6f8b13bc DL |
856 | err = tcp6_proc_init(net); |
857 | if (err) | |
858 | goto proc_tcp6_fail; | |
6ab57e7e DL |
859 | err = ac6_proc_init(net); |
860 | if (err) | |
861 | goto proc_ac6_fail; | |
0c96d8c5 DL |
862 | out: |
863 | #endif | |
864 | return err; | |
6f8b13bc DL |
865 | |
866 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
867 | proc_ac6_fail: |
868 | tcp6_proc_exit(net); | |
6f8b13bc DL |
869 | proc_tcp6_fail: |
870 | udp6_proc_exit(net); | |
871 | goto out; | |
872 | #endif | |
81c1c178 DL |
873 | } |
874 | ||
875 | static void inet6_net_exit(struct net *net) | |
876 | { | |
0c96d8c5 DL |
877 | #ifdef CONFIG_PROC_FS |
878 | udp6_proc_exit(net); | |
6f8b13bc | 879 | tcp6_proc_exit(net); |
6ab57e7e | 880 | ac6_proc_exit(net); |
0c96d8c5 | 881 | #endif |
81c1c178 DL |
882 | } |
883 | ||
884 | static struct pernet_operations inet6_net_ops = { | |
885 | .init = inet6_net_init, | |
886 | .exit = inet6_net_exit, | |
887 | }; | |
888 | ||
1da177e4 LT |
889 | static int __init inet6_init(void) |
890 | { | |
891 | struct sk_buff *dummy_skb; | |
1ab1457c | 892 | struct list_head *r; |
1da177e4 LT |
893 | int err; |
894 | ||
ef047f5e YH |
895 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); |
896 | ||
1da177e4 LT |
897 | err = proto_register(&tcpv6_prot, 1); |
898 | if (err) | |
899 | goto out; | |
900 | ||
901 | err = proto_register(&udpv6_prot, 1); | |
902 | if (err) | |
903 | goto out_unregister_tcp_proto; | |
904 | ||
ba4e58ec | 905 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
906 | if (err) |
907 | goto out_unregister_udp_proto; | |
908 | ||
ba4e58ec GR |
909 | err = proto_register(&rawv6_prot, 1); |
910 | if (err) | |
911 | goto out_unregister_udplite_proto; | |
912 | ||
1da177e4 LT |
913 | |
914 | /* Register the socket-side information for inet6_create. */ | |
915 | for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) | |
916 | INIT_LIST_HEAD(r); | |
917 | ||
918 | /* We MUST register RAW sockets before we create the ICMP6, | |
919 | * IGMP6, or NDISC control sockets. | |
920 | */ | |
7f4e4868 DL |
921 | err = rawv6_init(); |
922 | if (err) | |
923 | goto out_unregister_raw_proto; | |
1da177e4 LT |
924 | |
925 | /* Register the family here so that the init calls below will | |
926 | * be able to create sockets. (?? is this dangerous ??) | |
927 | */ | |
8eb55910 DM |
928 | err = sock_register(&inet6_family_ops); |
929 | if (err) | |
7f4e4868 | 930 | goto out_sock_register_fail; |
1da177e4 LT |
931 | |
932 | /* Initialise ipv6 mibs */ | |
933 | err = init_ipv6_mibs(); | |
934 | if (err) | |
8eb55910 | 935 | goto out_unregister_sock; |
1ab1457c | 936 | |
1da177e4 LT |
937 | /* |
938 | * ipngwg API draft makes clear that the correct semantics | |
939 | * for TCP and UDP is to consider one TCP and UDP instance | |
940 | * in a host availiable by both INET and INET6 APIs and | |
941 | * able to communicate via both network protocols. | |
942 | */ | |
943 | ||
81c1c178 DL |
944 | err = register_pernet_subsys(&inet6_net_ops); |
945 | if (err) | |
946 | goto register_pernet_fail; | |
9b0f976f | 947 | err = icmpv6_init(); |
1da177e4 LT |
948 | if (err) |
949 | goto icmp_fail; | |
623d1a1a WC |
950 | err = ip6_mr_init(); |
951 | if (err) | |
952 | goto ipmr_fail; | |
9b0f976f | 953 | err = ndisc_init(); |
1da177e4 LT |
954 | if (err) |
955 | goto ndisc_fail; | |
9b0f976f | 956 | err = igmp6_init(); |
1da177e4 LT |
957 | if (err) |
958 | goto igmp_fail; | |
2cc7d573 HW |
959 | err = ipv6_netfilter_init(); |
960 | if (err) | |
961 | goto netfilter_fail; | |
1da177e4 LT |
962 | /* Create /proc/foo6 entries. */ |
963 | #ifdef CONFIG_PROC_FS | |
964 | err = -ENOMEM; | |
965 | if (raw6_proc_init()) | |
966 | goto proc_raw6_fail; | |
ba4e58ec GR |
967 | if (udplite6_proc_init()) |
968 | goto proc_udplite6_fail; | |
1da177e4 LT |
969 | if (ipv6_misc_proc_init()) |
970 | goto proc_misc6_fail; | |
1da177e4 LT |
971 | if (if6_proc_init()) |
972 | goto proc_if6_fail; | |
973 | #endif | |
e2fddf5e DL |
974 | err = ip6_route_init(); |
975 | if (err) | |
976 | goto ip6_route_fail; | |
0a3e78ac DL |
977 | err = ip6_flowlabel_init(); |
978 | if (err) | |
979 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
980 | err = addrconf_init(); |
981 | if (err) | |
982 | goto addrconf_fail; | |
1da177e4 LT |
983 | |
984 | /* Init v6 extension headers. */ | |
248b238d DL |
985 | err = ipv6_exthdrs_init(); |
986 | if (err) | |
987 | goto ipv6_exthdrs_fail; | |
988 | ||
853cbbaa DL |
989 | err = ipv6_frag_init(); |
990 | if (err) | |
991 | goto ipv6_frag_fail; | |
1da177e4 LT |
992 | |
993 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
994 | err = udpv6_init(); |
995 | if (err) | |
996 | goto udpv6_fail; | |
e2ed4052 | 997 | |
7f4e4868 DL |
998 | err = udplitev6_init(); |
999 | if (err) | |
1000 | goto udplitev6_fail; | |
1001 | ||
1002 | err = tcpv6_init(); | |
1003 | if (err) | |
1004 | goto tcpv6_fail; | |
1005 | ||
1006 | err = ipv6_packet_init(); | |
1007 | if (err) | |
1008 | goto ipv6_packet_fail; | |
94911fe3 BT |
1009 | |
1010 | #ifdef CONFIG_SYSCTL | |
1011 | err = ipv6_sysctl_register(); | |
1012 | if (err) | |
1013 | goto sysctl_fail; | |
1014 | #endif | |
1da177e4 LT |
1015 | out: |
1016 | return err; | |
1017 | ||
94911fe3 BT |
1018 | #ifdef CONFIG_SYSCTL |
1019 | sysctl_fail: | |
1020 | ipv6_packet_cleanup(); | |
1021 | #endif | |
7f4e4868 DL |
1022 | ipv6_packet_fail: |
1023 | tcpv6_exit(); | |
1024 | tcpv6_fail: | |
1025 | udplitev6_exit(); | |
1026 | udplitev6_fail: | |
1027 | udpv6_exit(); | |
1028 | udpv6_fail: | |
1029 | ipv6_frag_exit(); | |
853cbbaa DL |
1030 | ipv6_frag_fail: |
1031 | ipv6_exthdrs_exit(); | |
248b238d DL |
1032 | ipv6_exthdrs_fail: |
1033 | addrconf_cleanup(); | |
1da177e4 LT |
1034 | addrconf_fail: |
1035 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1036 | ip6_flowlabel_fail: |
1da177e4 | 1037 | ip6_route_cleanup(); |
e2fddf5e | 1038 | ip6_route_fail: |
1da177e4 LT |
1039 | #ifdef CONFIG_PROC_FS |
1040 | if6_proc_exit(); | |
1041 | proc_if6_fail: | |
1da177e4 LT |
1042 | ipv6_misc_proc_exit(); |
1043 | proc_misc6_fail: | |
ba4e58ec GR |
1044 | udplite6_proc_exit(); |
1045 | proc_udplite6_fail: | |
1da177e4 LT |
1046 | raw6_proc_exit(); |
1047 | proc_raw6_fail: | |
1048 | #endif | |
2cc7d573 HW |
1049 | ipv6_netfilter_fini(); |
1050 | netfilter_fail: | |
1da177e4 LT |
1051 | igmp6_cleanup(); |
1052 | igmp_fail: | |
1053 | ndisc_cleanup(); | |
1054 | ndisc_fail: | |
623d1a1a WC |
1055 | ip6_mr_cleanup(); |
1056 | ipmr_fail: | |
1da177e4 LT |
1057 | icmpv6_cleanup(); |
1058 | icmp_fail: | |
81c1c178 DL |
1059 | unregister_pernet_subsys(&inet6_net_ops); |
1060 | register_pernet_fail: | |
1da177e4 | 1061 | cleanup_ipv6_mibs(); |
8eb55910 DM |
1062 | out_unregister_sock: |
1063 | sock_unregister(PF_INET6); | |
e2fddf5e | 1064 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1065 | out_sock_register_fail: |
1066 | rawv6_exit(); | |
1da177e4 LT |
1067 | out_unregister_raw_proto: |
1068 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1069 | out_unregister_udplite_proto: |
1070 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1071 | out_unregister_udp_proto: |
1072 | proto_unregister(&udpv6_prot); | |
1073 | out_unregister_tcp_proto: | |
1074 | proto_unregister(&tcpv6_prot); | |
1075 | goto out; | |
1076 | } | |
1077 | module_init(inet6_init); | |
1078 | ||
1079 | static void __exit inet6_exit(void) | |
1080 | { | |
1081 | /* First of all disallow new sockets creation. */ | |
1082 | sock_unregister(PF_INET6); | |
c127ea2c TG |
1083 | /* Disallow any further netlink messages */ |
1084 | rtnl_unregister_all(PF_INET6); | |
ca17c233 | 1085 | |
94911fe3 BT |
1086 | #ifdef CONFIG_SYSCTL |
1087 | ipv6_sysctl_unregister(); | |
1088 | #endif | |
7f4e4868 DL |
1089 | udpv6_exit(); |
1090 | udplitev6_exit(); | |
1091 | tcpv6_exit(); | |
1092 | ||
ca17c233 JJ |
1093 | /* Cleanup code parts. */ |
1094 | ipv6_packet_cleanup(); | |
853cbbaa | 1095 | ipv6_frag_exit(); |
248b238d | 1096 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1097 | addrconf_cleanup(); |
1098 | ip6_flowlabel_cleanup(); | |
1099 | ip6_route_cleanup(); | |
1da177e4 | 1100 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1101 | |
1102 | /* Cleanup code parts. */ | |
1da177e4 | 1103 | if6_proc_exit(); |
1ab1457c | 1104 | ipv6_misc_proc_exit(); |
1ab1457c | 1105 | udplite6_proc_exit(); |
1ab1457c | 1106 | raw6_proc_exit(); |
2c8d7ca0 | 1107 | #endif |
2cc7d573 | 1108 | ipv6_netfilter_fini(); |
ca17c233 | 1109 | igmp6_cleanup(); |
1da177e4 | 1110 | ndisc_cleanup(); |
623d1a1a | 1111 | ip6_mr_cleanup(); |
1da177e4 | 1112 | icmpv6_cleanup(); |
7f4e4868 | 1113 | rawv6_exit(); |
94911fe3 | 1114 | |
81c1c178 | 1115 | unregister_pernet_subsys(&inet6_net_ops); |
1da177e4 LT |
1116 | cleanup_ipv6_mibs(); |
1117 | proto_unregister(&rawv6_prot); | |
ca17c233 | 1118 | proto_unregister(&udplitev6_prot); |
1da177e4 LT |
1119 | proto_unregister(&udpv6_prot); |
1120 | proto_unregister(&tcpv6_prot); | |
1121 | } | |
1122 | module_exit(inet6_exit); | |
1123 | ||
1124 | MODULE_ALIAS_NETPROTO(PF_INET6); |