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 | * | |
10 | * $Id: af_inet6.c,v 1.66 2002/02/01 22:01:04 davem Exp $ | |
11 | * | |
12 | * Fixes: | |
13 | * piggy, Karl Knutson : Socket protocol table | |
14 | * Hideaki YOSHIFUJI : sin6_scope_id support | |
15 | * Arnaldo Melo : check proc_net_create return, cleanups | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License | |
19 | * as published by the Free Software Foundation; either version | |
20 | * 2 of the License, or (at your option) any later version. | |
21 | */ | |
22 | ||
23 | ||
24 | #include <linux/module.h> | |
4fc268d2 | 25 | #include <linux/capability.h> |
1da177e4 LT |
26 | #include <linux/errno.h> |
27 | #include <linux/types.h> | |
28 | #include <linux/socket.h> | |
29 | #include <linux/in.h> | |
30 | #include <linux/kernel.h> | |
1da177e4 LT |
31 | #include <linux/timer.h> |
32 | #include <linux/string.h> | |
33 | #include <linux/sockios.h> | |
34 | #include <linux/net.h> | |
35 | #include <linux/fcntl.h> | |
36 | #include <linux/mm.h> | |
37 | #include <linux/interrupt.h> | |
38 | #include <linux/proc_fs.h> | |
39 | #include <linux/stat.h> | |
40 | #include <linux/init.h> | |
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 LT |
51 | #include <net/tcp.h> |
52 | #include <net/ipip.h> | |
53 | #include <net/protocol.h> | |
54 | #include <net/inet_common.h> | |
55 | #include <net/transp_v6.h> | |
56 | #include <net/ip6_route.h> | |
57 | #include <net/addrconf.h> | |
58 | #ifdef CONFIG_IPV6_TUNNEL | |
59 | #include <net/ip6_tunnel.h> | |
60 | #endif | |
61 | ||
62 | #include <asm/uaccess.h> | |
63 | #include <asm/system.h> | |
64 | ||
65 | MODULE_AUTHOR("Cast of dozens"); | |
66 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
67 | MODULE_LICENSE("GPL"); | |
68 | ||
f1267347 | 69 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
70 | * build a new socket. |
71 | */ | |
72 | static struct list_head inetsw6[SOCK_MAX]; | |
73 | static DEFINE_SPINLOCK(inetsw6_lock); | |
74 | ||
1da177e4 LT |
75 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
76 | { | |
77 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
78 | ||
79 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
80 | } | |
81 | ||
1b8d7ae4 | 82 | static int inet6_create(struct net *net, struct socket *sock, int protocol) |
1da177e4 LT |
83 | { |
84 | struct inet_sock *inet; | |
85 | struct ipv6_pinfo *np; | |
86 | struct sock *sk; | |
87 | struct list_head *p; | |
88 | struct inet_protosw *answer; | |
89 | struct proto *answer_prot; | |
90 | unsigned char answer_flags; | |
91 | char answer_no_check; | |
af1afe86 YH |
92 | int try_loading_module = 0; |
93 | int err; | |
1da177e4 | 94 | |
b3da2cf3 DM |
95 | if (sock->type != SOCK_RAW && |
96 | sock->type != SOCK_DGRAM && | |
97 | !inet_ehash_secret) | |
98 | build_ehash_secret(); | |
99 | ||
1da177e4 LT |
100 | /* Look for the requested type/protocol pair. */ |
101 | answer = NULL; | |
af1afe86 YH |
102 | lookup_protocol: |
103 | err = -ESOCKTNOSUPPORT; | |
1da177e4 LT |
104 | rcu_read_lock(); |
105 | list_for_each_rcu(p, &inetsw6[sock->type]) { | |
106 | answer = list_entry(p, struct inet_protosw, list); | |
107 | ||
108 | /* Check the non-wild match. */ | |
109 | if (protocol == answer->protocol) { | |
110 | if (protocol != IPPROTO_IP) | |
111 | break; | |
112 | } else { | |
113 | /* Check for the two wild cases. */ | |
114 | if (IPPROTO_IP == protocol) { | |
115 | protocol = answer->protocol; | |
116 | break; | |
117 | } | |
118 | if (IPPROTO_IP == answer->protocol) | |
119 | break; | |
120 | } | |
af1afe86 | 121 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
122 | answer = NULL; |
123 | } | |
124 | ||
af1afe86 YH |
125 | if (!answer) { |
126 | if (try_loading_module < 2) { | |
127 | rcu_read_unlock(); | |
128 | /* | |
129 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
130 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
131 | */ | |
132 | if (++try_loading_module == 1) | |
133 | request_module("net-pf-%d-proto-%d-type-%d", | |
134 | PF_INET6, protocol, sock->type); | |
135 | /* | |
136 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
137 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
138 | */ | |
139 | else | |
140 | request_module("net-pf-%d-proto-%d", | |
141 | PF_INET6, protocol); | |
142 | goto lookup_protocol; | |
143 | } else | |
144 | goto out_rcu_unlock; | |
145 | } | |
146 | ||
147 | err = -EPERM; | |
1da177e4 LT |
148 | if (answer->capability > 0 && !capable(answer->capability)) |
149 | goto out_rcu_unlock; | |
1da177e4 LT |
150 | |
151 | sock->ops = answer->ops; | |
1da177e4 LT |
152 | answer_prot = answer->prot; |
153 | answer_no_check = answer->no_check; | |
154 | answer_flags = answer->flags; | |
155 | rcu_read_unlock(); | |
156 | ||
157 | BUG_TRAP(answer_prot->slab != NULL); | |
158 | ||
af1afe86 | 159 | err = -ENOBUFS; |
6257ff21 | 160 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
161 | if (sk == NULL) |
162 | goto out; | |
163 | ||
164 | sock_init_data(sock, sk); | |
165 | ||
af1afe86 | 166 | err = 0; |
1da177e4 LT |
167 | sk->sk_no_check = answer_no_check; |
168 | if (INET_PROTOSW_REUSE & answer_flags) | |
169 | sk->sk_reuse = 1; | |
170 | ||
171 | inet = inet_sk(sk); | |
469de9b9 | 172 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
173 | |
174 | if (SOCK_RAW == sock->type) { | |
175 | inet->num = protocol; | |
176 | if (IPPROTO_RAW == protocol) | |
177 | inet->hdrincl = 1; | |
178 | } | |
179 | ||
e6848976 | 180 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
181 | sk->sk_family = PF_INET6; |
182 | sk->sk_protocol = protocol; | |
183 | ||
184 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
185 | ||
186 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
187 | np->hop_limit = -1; | |
188 | np->mcast_hops = -1; | |
189 | np->mc_loop = 1; | |
190 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
99bc9c4e | 191 | np->ipv6only = init_net.ipv6.sysctl.bindv6only; |
1ab1457c | 192 | |
1da177e4 LT |
193 | /* Init the ipv4 part of the socket since we can have sockets |
194 | * using v6 API for ipv4. | |
195 | */ | |
196 | inet->uc_ttl = -1; | |
197 | ||
198 | inet->mc_loop = 1; | |
199 | inet->mc_ttl = 1; | |
200 | inet->mc_index = 0; | |
201 | inet->mc_list = NULL; | |
202 | ||
203 | if (ipv4_config.no_pmtu_disc) | |
204 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
205 | else | |
206 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 207 | /* |
e6848976 ACM |
208 | * Increment only the relevant sk_prot->socks debug field, this changes |
209 | * the previous behaviour of incrementing both the equivalent to | |
210 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
211 | * | |
212 | * This allows better debug granularity as we'll know exactly how many | |
213 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
214 | * transport protocol socks. -acme | |
215 | */ | |
216 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 217 | |
1da177e4 LT |
218 | if (inet->num) { |
219 | /* It assumes that any protocol which allows | |
220 | * the user to assign a number at socket | |
221 | * creation time automatically shares. | |
222 | */ | |
e69a4adc | 223 | inet->sport = htons(inet->num); |
1da177e4 LT |
224 | sk->sk_prot->hash(sk); |
225 | } | |
226 | if (sk->sk_prot->init) { | |
af1afe86 YH |
227 | err = sk->sk_prot->init(sk); |
228 | if (err) { | |
1da177e4 LT |
229 | sk_common_release(sk); |
230 | goto out; | |
231 | } | |
232 | } | |
233 | out: | |
af1afe86 | 234 | return err; |
1da177e4 LT |
235 | out_rcu_unlock: |
236 | rcu_read_unlock(); | |
237 | goto out; | |
238 | } | |
239 | ||
240 | ||
241 | /* bind for INET6 API */ | |
242 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
243 | { | |
244 | struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; | |
245 | struct sock *sk = sock->sk; | |
246 | struct inet_sock *inet = inet_sk(sk); | |
247 | struct ipv6_pinfo *np = inet6_sk(sk); | |
075de939 | 248 | struct net *net = sk->sk_net; |
fd683222 | 249 | __be32 v4addr = 0; |
1da177e4 LT |
250 | unsigned short snum; |
251 | int addr_type = 0; | |
252 | int err = 0; | |
253 | ||
254 | /* If the socket has its own bind function then use it. */ | |
255 | if (sk->sk_prot->bind) | |
256 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
257 | ||
258 | if (addr_len < SIN6_LEN_RFC2133) | |
259 | return -EINVAL; | |
260 | addr_type = ipv6_addr_type(&addr->sin6_addr); | |
261 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
262 | return -EINVAL; | |
263 | ||
264 | snum = ntohs(addr->sin6_port); | |
265 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
266 | return -EACCES; | |
267 | ||
268 | lock_sock(sk); | |
269 | ||
270 | /* Check these errors (active socket, double bind). */ | |
271 | if (sk->sk_state != TCP_CLOSE || inet->num) { | |
272 | err = -EINVAL; | |
273 | goto out; | |
274 | } | |
275 | ||
276 | /* Check if the address belongs to the host. */ | |
277 | if (addr_type == IPV6_ADDR_MAPPED) { | |
278 | v4addr = addr->sin6_addr.s6_addr32[3]; | |
075de939 | 279 | if (inet_addr_type(net, v4addr) != RTN_LOCAL) { |
1da177e4 LT |
280 | err = -EADDRNOTAVAIL; |
281 | goto out; | |
282 | } | |
283 | } else { | |
284 | if (addr_type != IPV6_ADDR_ANY) { | |
285 | struct net_device *dev = NULL; | |
286 | ||
287 | if (addr_type & IPV6_ADDR_LINKLOCAL) { | |
288 | if (addr_len >= sizeof(struct sockaddr_in6) && | |
289 | addr->sin6_scope_id) { | |
290 | /* Override any existing binding, if another one | |
291 | * is supplied by user. | |
292 | */ | |
293 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
294 | } | |
1ab1457c | 295 | |
1da177e4 LT |
296 | /* Binding to link-local address requires an interface */ |
297 | if (!sk->sk_bound_dev_if) { | |
298 | err = -EINVAL; | |
299 | goto out; | |
300 | } | |
075de939 | 301 | dev = dev_get_by_index(net, sk->sk_bound_dev_if); |
1da177e4 LT |
302 | if (!dev) { |
303 | err = -ENODEV; | |
304 | goto out; | |
305 | } | |
306 | } | |
307 | ||
308 | /* ipv4 addr of the socket is invalid. Only the | |
309 | * unspecified and mapped address have a v4 equivalent. | |
310 | */ | |
311 | v4addr = LOOPBACK4_IPV6; | |
312 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
075de939 | 313 | if (!ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 314 | dev, 0)) { |
1da177e4 LT |
315 | if (dev) |
316 | dev_put(dev); | |
317 | err = -EADDRNOTAVAIL; | |
318 | goto out; | |
319 | } | |
320 | } | |
321 | if (dev) | |
322 | dev_put(dev); | |
323 | } | |
324 | } | |
325 | ||
326 | inet->rcv_saddr = v4addr; | |
327 | inet->saddr = v4addr; | |
328 | ||
329 | ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); | |
1ab1457c | 330 | |
1da177e4 LT |
331 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
332 | ipv6_addr_copy(&np->saddr, &addr->sin6_addr); | |
333 | ||
334 | /* Make sure we are allowed to bind here. */ | |
335 | if (sk->sk_prot->get_port(sk, snum)) { | |
336 | inet_reset_saddr(sk); | |
337 | err = -EADDRINUSE; | |
338 | goto out; | |
339 | } | |
340 | ||
341 | if (addr_type != IPV6_ADDR_ANY) | |
342 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; | |
343 | if (snum) | |
344 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
e69a4adc | 345 | inet->sport = htons(inet->num); |
1da177e4 LT |
346 | inet->dport = 0; |
347 | inet->daddr = 0; | |
348 | out: | |
349 | release_sock(sk); | |
350 | return err; | |
351 | } | |
352 | ||
7159039a YH |
353 | EXPORT_SYMBOL(inet6_bind); |
354 | ||
1da177e4 LT |
355 | int inet6_release(struct socket *sock) |
356 | { | |
357 | struct sock *sk = sock->sk; | |
358 | ||
359 | if (sk == NULL) | |
360 | return -EINVAL; | |
361 | ||
362 | /* Free mc lists */ | |
363 | ipv6_sock_mc_close(sk); | |
364 | ||
365 | /* Free ac lists */ | |
366 | ipv6_sock_ac_close(sk); | |
367 | ||
368 | return inet_release(sock); | |
369 | } | |
370 | ||
7159039a YH |
371 | EXPORT_SYMBOL(inet6_release); |
372 | ||
1da177e4 LT |
373 | int inet6_destroy_sock(struct sock *sk) |
374 | { | |
375 | struct ipv6_pinfo *np = inet6_sk(sk); | |
376 | struct sk_buff *skb; | |
377 | struct ipv6_txoptions *opt; | |
378 | ||
1da177e4 LT |
379 | /* Release rx options */ |
380 | ||
381 | if ((skb = xchg(&np->pktoptions, NULL)) != NULL) | |
382 | kfree_skb(skb); | |
383 | ||
384 | /* Free flowlabels */ | |
385 | fl6_free_socklist(sk); | |
386 | ||
387 | /* Free tx options */ | |
388 | ||
389 | if ((opt = xchg(&np->opt, NULL)) != NULL) | |
390 | sock_kfree_s(sk, opt, opt->tot_len); | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
3cf3dc6c ACM |
395 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
396 | ||
1da177e4 LT |
397 | /* |
398 | * This does both peername and sockname. | |
399 | */ | |
1ab1457c | 400 | |
1da177e4 LT |
401 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
402 | int *uaddr_len, int peer) | |
403 | { | |
404 | struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; | |
405 | struct sock *sk = sock->sk; | |
406 | struct inet_sock *inet = inet_sk(sk); | |
407 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 408 | |
1da177e4 LT |
409 | sin->sin6_family = AF_INET6; |
410 | sin->sin6_flowinfo = 0; | |
411 | sin->sin6_scope_id = 0; | |
412 | if (peer) { | |
413 | if (!inet->dport) | |
414 | return -ENOTCONN; | |
415 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
416 | peer == 1) | |
417 | return -ENOTCONN; | |
418 | sin->sin6_port = inet->dport; | |
419 | ipv6_addr_copy(&sin->sin6_addr, &np->daddr); | |
420 | if (np->sndflow) | |
421 | sin->sin6_flowinfo = np->flow_label; | |
422 | } else { | |
423 | if (ipv6_addr_any(&np->rcv_saddr)) | |
424 | ipv6_addr_copy(&sin->sin6_addr, &np->saddr); | |
425 | else | |
426 | ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); | |
427 | ||
428 | sin->sin6_port = inet->sport; | |
429 | } | |
430 | if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
431 | sin->sin6_scope_id = sk->sk_bound_dev_if; | |
432 | *uaddr_len = sizeof(*sin); | |
433 | return(0); | |
434 | } | |
435 | ||
7159039a YH |
436 | EXPORT_SYMBOL(inet6_getname); |
437 | ||
1da177e4 LT |
438 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
439 | { | |
440 | struct sock *sk = sock->sk; | |
5578689a | 441 | struct net *net = sk->sk_net; |
1da177e4 | 442 | |
1ab1457c | 443 | switch(cmd) |
1da177e4 LT |
444 | { |
445 | case SIOCGSTAMP: | |
446 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
447 | ||
ae40eb1e ED |
448 | case SIOCGSTAMPNS: |
449 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
450 | ||
1da177e4 LT |
451 | case SIOCADDRT: |
452 | case SIOCDELRT: | |
1ab1457c | 453 | |
5578689a | 454 | return(ipv6_route_ioctl(net, cmd, (void __user *)arg)); |
1da177e4 LT |
455 | |
456 | case SIOCSIFADDR: | |
af284937 | 457 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 458 | case SIOCDIFADDR: |
af284937 | 459 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 460 | case SIOCSIFDSTADDR: |
af284937 | 461 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 462 | default: |
b5e5fa5e CH |
463 | if (!sk->sk_prot->ioctl) |
464 | return -ENOIOCTLCMD; | |
465 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
466 | } |
467 | /*NOTREACHED*/ | |
468 | return(0); | |
469 | } | |
470 | ||
7159039a YH |
471 | EXPORT_SYMBOL(inet6_ioctl); |
472 | ||
90ddc4f0 | 473 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
474 | .family = PF_INET6, |
475 | .owner = THIS_MODULE, | |
476 | .release = inet6_release, | |
477 | .bind = inet6_bind, | |
478 | .connect = inet_stream_connect, /* ok */ | |
479 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
480 | .accept = inet_accept, /* ok */ | |
481 | .getname = inet6_getname, | |
482 | .poll = tcp_poll, /* ok */ | |
483 | .ioctl = inet6_ioctl, /* must change */ | |
484 | .listen = inet_listen, /* ok */ | |
485 | .shutdown = inet_shutdown, /* ok */ | |
486 | .setsockopt = sock_common_setsockopt, /* ok */ | |
487 | .getsockopt = sock_common_getsockopt, /* ok */ | |
3516ffb0 | 488 | .sendmsg = tcp_sendmsg, /* ok */ |
543d9cfe ACM |
489 | .recvmsg = sock_common_recvmsg, /* ok */ |
490 | .mmap = sock_no_mmap, | |
491 | .sendpage = tcp_sendpage, | |
a0974dd3 | 492 | .splice_read = tcp_splice_read, |
3fdadf7d | 493 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
494 | .compat_setsockopt = compat_sock_common_setsockopt, |
495 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 496 | #endif |
1da177e4 LT |
497 | }; |
498 | ||
90ddc4f0 | 499 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
500 | .family = PF_INET6, |
501 | .owner = THIS_MODULE, | |
502 | .release = inet6_release, | |
503 | .bind = inet6_bind, | |
504 | .connect = inet_dgram_connect, /* ok */ | |
505 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
506 | .accept = sock_no_accept, /* a do nothing */ | |
507 | .getname = inet6_getname, | |
508 | .poll = udp_poll, /* ok */ | |
509 | .ioctl = inet6_ioctl, /* must change */ | |
510 | .listen = sock_no_listen, /* ok */ | |
511 | .shutdown = inet_shutdown, /* ok */ | |
512 | .setsockopt = sock_common_setsockopt, /* ok */ | |
513 | .getsockopt = sock_common_getsockopt, /* ok */ | |
514 | .sendmsg = inet_sendmsg, /* ok */ | |
515 | .recvmsg = sock_common_recvmsg, /* ok */ | |
516 | .mmap = sock_no_mmap, | |
517 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 518 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
519 | .compat_setsockopt = compat_sock_common_setsockopt, |
520 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 521 | #endif |
1da177e4 LT |
522 | }; |
523 | ||
524 | static struct net_proto_family inet6_family_ops = { | |
525 | .family = PF_INET6, | |
526 | .create = inet6_create, | |
527 | .owner = THIS_MODULE, | |
528 | }; | |
529 | ||
87c3efbf | 530 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
531 | { |
532 | struct list_head *lh; | |
533 | struct inet_protosw *answer; | |
1da177e4 | 534 | struct list_head *last_perm; |
87c3efbf DL |
535 | int protocol = p->protocol; |
536 | int ret; | |
1da177e4 LT |
537 | |
538 | spin_lock_bh(&inetsw6_lock); | |
539 | ||
87c3efbf | 540 | ret = -EINVAL; |
1da177e4 LT |
541 | if (p->type >= SOCK_MAX) |
542 | goto out_illegal; | |
543 | ||
544 | /* If we are trying to override a permanent protocol, bail. */ | |
545 | answer = NULL; | |
87c3efbf | 546 | ret = -EPERM; |
1da177e4 LT |
547 | last_perm = &inetsw6[p->type]; |
548 | list_for_each(lh, &inetsw6[p->type]) { | |
549 | answer = list_entry(lh, struct inet_protosw, list); | |
550 | ||
551 | /* Check only the non-wild match. */ | |
552 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
553 | if (protocol == answer->protocol) | |
554 | break; | |
555 | last_perm = lh; | |
556 | } | |
557 | ||
558 | answer = NULL; | |
559 | } | |
560 | if (answer) | |
561 | goto out_permanent; | |
562 | ||
563 | /* Add the new entry after the last permanent entry if any, so that | |
564 | * the new entry does not override a permanent entry when matched with | |
565 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 566 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
567 | * system automatically returns to the old behavior. |
568 | */ | |
569 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 570 | ret = 0; |
1da177e4 LT |
571 | out: |
572 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 573 | return ret; |
1da177e4 LT |
574 | |
575 | out_permanent: | |
576 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", | |
577 | protocol); | |
578 | goto out; | |
579 | ||
580 | out_illegal: | |
581 | printk(KERN_ERR | |
582 | "Ignoring attempt to register invalid socket type %d.\n", | |
583 | p->type); | |
584 | goto out; | |
585 | } | |
586 | ||
7159039a YH |
587 | EXPORT_SYMBOL(inet6_register_protosw); |
588 | ||
1da177e4 LT |
589 | void |
590 | inet6_unregister_protosw(struct inet_protosw *p) | |
591 | { | |
592 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
593 | printk(KERN_ERR | |
594 | "Attempt to unregister permanent protocol %d.\n", | |
595 | p->protocol); | |
596 | } else { | |
597 | spin_lock_bh(&inetsw6_lock); | |
598 | list_del_rcu(&p->list); | |
599 | spin_unlock_bh(&inetsw6_lock); | |
600 | ||
601 | synchronize_net(); | |
602 | } | |
603 | } | |
604 | ||
7159039a YH |
605 | EXPORT_SYMBOL(inet6_unregister_protosw); |
606 | ||
b9750ce1 ACM |
607 | int inet6_sk_rebuild_header(struct sock *sk) |
608 | { | |
609 | int err; | |
610 | struct dst_entry *dst; | |
611 | struct ipv6_pinfo *np = inet6_sk(sk); | |
612 | ||
613 | dst = __sk_dst_check(sk, np->dst_cookie); | |
614 | ||
615 | if (dst == NULL) { | |
616 | struct inet_sock *inet = inet_sk(sk); | |
617 | struct in6_addr *final_p = NULL, final; | |
618 | struct flowi fl; | |
619 | ||
620 | memset(&fl, 0, sizeof(fl)); | |
621 | fl.proto = sk->sk_protocol; | |
622 | ipv6_addr_copy(&fl.fl6_dst, &np->daddr); | |
623 | ipv6_addr_copy(&fl.fl6_src, &np->saddr); | |
624 | fl.fl6_flowlabel = np->flow_label; | |
625 | fl.oif = sk->sk_bound_dev_if; | |
626 | fl.fl_ip_dport = inet->dport; | |
627 | fl.fl_ip_sport = inet->sport; | |
beb8d13b | 628 | security_sk_classify_flow(sk, &fl); |
b9750ce1 ACM |
629 | |
630 | if (np->opt && np->opt->srcrt) { | |
631 | struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; | |
632 | ipv6_addr_copy(&final, &fl.fl6_dst); | |
633 | ipv6_addr_copy(&fl.fl6_dst, rt0->addr); | |
634 | final_p = &final; | |
635 | } | |
636 | ||
637 | err = ip6_dst_lookup(sk, &dst, &fl); | |
638 | if (err) { | |
639 | sk->sk_route_caps = 0; | |
640 | return err; | |
641 | } | |
642 | if (final_p) | |
643 | ipv6_addr_copy(&fl.fl6_dst, final_p); | |
644 | ||
645 | if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) { | |
646 | sk->sk_err_soft = -err; | |
647 | return err; | |
648 | } | |
649 | ||
8e1ef0a9 | 650 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
651 | } |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); | |
657 | ||
399c07de ACM |
658 | int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) |
659 | { | |
660 | struct ipv6_pinfo *np = inet6_sk(sk); | |
661 | struct inet6_skb_parm *opt = IP6CB(skb); | |
662 | ||
663 | if (np->rxopt.all) { | |
664 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
665 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
666 | ((IPV6_FLOWINFO_MASK & |
667 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
668 | np->rxopt.bits.rxflow) || |
669 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
670 | np->rxopt.bits.osrcrt)) || | |
671 | ((opt->dst1 || opt->dst0) && | |
672 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
673 | return 1; | |
674 | } | |
675 | return 0; | |
676 | } | |
677 | ||
678 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); | |
679 | ||
662397fd YH |
680 | static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb, |
681 | int proto) | |
682 | { | |
683 | struct inet6_protocol *ops = NULL; | |
684 | ||
685 | for (;;) { | |
686 | struct ipv6_opt_hdr *opth; | |
687 | int len; | |
688 | ||
689 | if (proto != NEXTHDR_HOP) { | |
690 | ops = rcu_dereference(inet6_protos[proto]); | |
691 | ||
692 | if (unlikely(!ops)) | |
693 | break; | |
694 | ||
695 | if (!(ops->flags & INET6_PROTO_GSO_EXTHDR)) | |
696 | break; | |
697 | } | |
698 | ||
699 | if (unlikely(!pskb_may_pull(skb, 8))) | |
700 | break; | |
701 | ||
702 | opth = (void *)skb->data; | |
703 | len = ipv6_optlen(opth); | |
704 | ||
705 | if (unlikely(!pskb_may_pull(skb, len))) | |
706 | break; | |
707 | ||
708 | proto = opth->nexthdr; | |
709 | __skb_pull(skb, len); | |
710 | } | |
711 | ||
712 | return ops; | |
713 | } | |
714 | ||
715 | static int ipv6_gso_send_check(struct sk_buff *skb) | |
716 | { | |
717 | struct ipv6hdr *ipv6h; | |
718 | struct inet6_protocol *ops; | |
719 | int err = -EINVAL; | |
720 | ||
721 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
722 | goto out; | |
723 | ||
724 | ipv6h = ipv6_hdr(skb); | |
725 | __skb_pull(skb, sizeof(*ipv6h)); | |
726 | err = -EPROTONOSUPPORT; | |
727 | ||
728 | rcu_read_lock(); | |
729 | ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); | |
730 | if (likely(ops && ops->gso_send_check)) { | |
731 | skb_reset_transport_header(skb); | |
732 | err = ops->gso_send_check(skb); | |
733 | } | |
734 | rcu_read_unlock(); | |
735 | ||
736 | out: | |
737 | return err; | |
738 | } | |
739 | ||
740 | static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features) | |
741 | { | |
742 | struct sk_buff *segs = ERR_PTR(-EINVAL); | |
743 | struct ipv6hdr *ipv6h; | |
744 | struct inet6_protocol *ops; | |
745 | ||
746 | if (!(features & NETIF_F_V6_CSUM)) | |
747 | features &= ~NETIF_F_SG; | |
748 | ||
749 | if (unlikely(skb_shinfo(skb)->gso_type & | |
750 | ~(SKB_GSO_UDP | | |
751 | SKB_GSO_DODGY | | |
752 | SKB_GSO_TCP_ECN | | |
753 | SKB_GSO_TCPV6 | | |
754 | 0))) | |
755 | goto out; | |
756 | ||
757 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
758 | goto out; | |
759 | ||
760 | ipv6h = ipv6_hdr(skb); | |
761 | __skb_pull(skb, sizeof(*ipv6h)); | |
762 | segs = ERR_PTR(-EPROTONOSUPPORT); | |
763 | ||
764 | rcu_read_lock(); | |
765 | ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); | |
766 | if (likely(ops && ops->gso_segment)) { | |
767 | skb_reset_transport_header(skb); | |
768 | segs = ops->gso_segment(skb, features); | |
769 | } | |
770 | rcu_read_unlock(); | |
771 | ||
772 | if (unlikely(IS_ERR(segs))) | |
773 | goto out; | |
774 | ||
775 | for (skb = segs; skb; skb = skb->next) { | |
776 | ipv6h = ipv6_hdr(skb); | |
777 | ipv6h->payload_len = htons(skb->len - skb->mac_len - | |
778 | sizeof(*ipv6h)); | |
779 | } | |
780 | ||
781 | out: | |
782 | return segs; | |
783 | } | |
784 | ||
785 | static struct packet_type ipv6_packet_type = { | |
786 | .type = __constant_htons(ETH_P_IPV6), | |
787 | .func = ipv6_rcv, | |
788 | .gso_send_check = ipv6_gso_send_check, | |
789 | .gso_segment = ipv6_gso_segment, | |
790 | }; | |
791 | ||
792 | static int __init ipv6_packet_init(void) | |
793 | { | |
794 | dev_add_pack(&ipv6_packet_type); | |
795 | return 0; | |
796 | } | |
797 | ||
798 | static void ipv6_packet_cleanup(void) | |
799 | { | |
800 | dev_remove_pack(&ipv6_packet_type); | |
801 | } | |
802 | ||
1da177e4 LT |
803 | static int __init init_ipv6_mibs(void) |
804 | { | |
c69bce20 YH |
805 | if (snmp_mib_init((void **)ipv6_statistics, |
806 | sizeof(struct ipstats_mib)) < 0) | |
1da177e4 | 807 | goto err_ip_mib; |
c69bce20 YH |
808 | if (snmp_mib_init((void **)icmpv6_statistics, |
809 | sizeof(struct icmpv6_mib)) < 0) | |
1da177e4 | 810 | goto err_icmp_mib; |
14878f75 | 811 | if (snmp_mib_init((void **)icmpv6msg_statistics, |
c69bce20 | 812 | sizeof(struct icmpv6msg_mib)) < 0) |
14878f75 | 813 | goto err_icmpmsg_mib; |
c69bce20 | 814 | if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0) |
1da177e4 | 815 | goto err_udp_mib; |
c69bce20 YH |
816 | if (snmp_mib_init((void **)udplite_stats_in6, |
817 | sizeof (struct udp_mib)) < 0) | |
ba4e58ec | 818 | goto err_udplite_mib; |
1da177e4 LT |
819 | return 0; |
820 | ||
ba4e58ec | 821 | err_udplite_mib: |
7f7d9a6b | 822 | snmp_mib_free((void **)udp_stats_in6); |
1da177e4 | 823 | err_udp_mib: |
14878f75 DS |
824 | snmp_mib_free((void **)icmpv6msg_statistics); |
825 | err_icmpmsg_mib: | |
7f7d9a6b | 826 | snmp_mib_free((void **)icmpv6_statistics); |
1da177e4 | 827 | err_icmp_mib: |
7f7d9a6b | 828 | snmp_mib_free((void **)ipv6_statistics); |
1da177e4 LT |
829 | err_ip_mib: |
830 | return -ENOMEM; | |
1ab1457c | 831 | |
1da177e4 LT |
832 | } |
833 | ||
834 | static void cleanup_ipv6_mibs(void) | |
835 | { | |
7f7d9a6b HX |
836 | snmp_mib_free((void **)ipv6_statistics); |
837 | snmp_mib_free((void **)icmpv6_statistics); | |
dc8a82ad | 838 | snmp_mib_free((void **)icmpv6msg_statistics); |
7f7d9a6b HX |
839 | snmp_mib_free((void **)udp_stats_in6); |
840 | snmp_mib_free((void **)udplite_stats_in6); | |
1da177e4 LT |
841 | } |
842 | ||
81c1c178 DL |
843 | static int inet6_net_init(struct net *net) |
844 | { | |
99bc9c4e | 845 | net->ipv6.sysctl.bindv6only = 0; |
4990509f DL |
846 | net->ipv6.sysctl.flush_delay = 0; |
847 | net->ipv6.sysctl.ip6_rt_max_size = 4096; | |
848 | net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; | |
849 | net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; | |
850 | net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; | |
851 | net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; | |
852 | net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; | |
853 | net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; | |
41a76906 | 854 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 855 | |
81c1c178 DL |
856 | return 0; |
857 | } | |
858 | ||
859 | static void inet6_net_exit(struct net *net) | |
860 | { | |
861 | return; | |
862 | } | |
863 | ||
864 | static struct pernet_operations inet6_net_ops = { | |
865 | .init = inet6_net_init, | |
866 | .exit = inet6_net_exit, | |
867 | }; | |
868 | ||
1da177e4 LT |
869 | static int __init inet6_init(void) |
870 | { | |
871 | struct sk_buff *dummy_skb; | |
1ab1457c | 872 | struct list_head *r; |
1da177e4 LT |
873 | int err; |
874 | ||
ef047f5e YH |
875 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); |
876 | ||
1da177e4 LT |
877 | err = proto_register(&tcpv6_prot, 1); |
878 | if (err) | |
879 | goto out; | |
880 | ||
881 | err = proto_register(&udpv6_prot, 1); | |
882 | if (err) | |
883 | goto out_unregister_tcp_proto; | |
884 | ||
ba4e58ec | 885 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
886 | if (err) |
887 | goto out_unregister_udp_proto; | |
888 | ||
ba4e58ec GR |
889 | err = proto_register(&rawv6_prot, 1); |
890 | if (err) | |
891 | goto out_unregister_udplite_proto; | |
892 | ||
1da177e4 LT |
893 | |
894 | /* Register the socket-side information for inet6_create. */ | |
895 | for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) | |
896 | INIT_LIST_HEAD(r); | |
897 | ||
898 | /* We MUST register RAW sockets before we create the ICMP6, | |
899 | * IGMP6, or NDISC control sockets. | |
900 | */ | |
7f4e4868 DL |
901 | err = rawv6_init(); |
902 | if (err) | |
903 | goto out_unregister_raw_proto; | |
1da177e4 LT |
904 | |
905 | /* Register the family here so that the init calls below will | |
906 | * be able to create sockets. (?? is this dangerous ??) | |
907 | */ | |
8eb55910 DM |
908 | err = sock_register(&inet6_family_ops); |
909 | if (err) | |
7f4e4868 | 910 | goto out_sock_register_fail; |
1da177e4 LT |
911 | |
912 | /* Initialise ipv6 mibs */ | |
913 | err = init_ipv6_mibs(); | |
914 | if (err) | |
8eb55910 | 915 | goto out_unregister_sock; |
1ab1457c | 916 | |
1da177e4 LT |
917 | /* |
918 | * ipngwg API draft makes clear that the correct semantics | |
919 | * for TCP and UDP is to consider one TCP and UDP instance | |
920 | * in a host availiable by both INET and INET6 APIs and | |
921 | * able to communicate via both network protocols. | |
922 | */ | |
923 | ||
81c1c178 DL |
924 | err = register_pernet_subsys(&inet6_net_ops); |
925 | if (err) | |
926 | goto register_pernet_fail; | |
9b0f976f | 927 | err = icmpv6_init(); |
1da177e4 LT |
928 | if (err) |
929 | goto icmp_fail; | |
9b0f976f | 930 | err = ndisc_init(); |
1da177e4 LT |
931 | if (err) |
932 | goto ndisc_fail; | |
9b0f976f | 933 | err = igmp6_init(); |
1da177e4 LT |
934 | if (err) |
935 | goto igmp_fail; | |
2cc7d573 HW |
936 | err = ipv6_netfilter_init(); |
937 | if (err) | |
938 | goto netfilter_fail; | |
1da177e4 LT |
939 | /* Create /proc/foo6 entries. */ |
940 | #ifdef CONFIG_PROC_FS | |
941 | err = -ENOMEM; | |
942 | if (raw6_proc_init()) | |
943 | goto proc_raw6_fail; | |
944 | if (tcp6_proc_init()) | |
945 | goto proc_tcp6_fail; | |
946 | if (udp6_proc_init()) | |
947 | goto proc_udp6_fail; | |
ba4e58ec GR |
948 | if (udplite6_proc_init()) |
949 | goto proc_udplite6_fail; | |
1da177e4 LT |
950 | if (ipv6_misc_proc_init()) |
951 | goto proc_misc6_fail; | |
952 | ||
953 | if (ac6_proc_init()) | |
954 | goto proc_anycast6_fail; | |
955 | if (if6_proc_init()) | |
956 | goto proc_if6_fail; | |
957 | #endif | |
e2fddf5e DL |
958 | err = ip6_route_init(); |
959 | if (err) | |
960 | goto ip6_route_fail; | |
0a3e78ac DL |
961 | err = ip6_flowlabel_init(); |
962 | if (err) | |
963 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
964 | err = addrconf_init(); |
965 | if (err) | |
966 | goto addrconf_fail; | |
1da177e4 LT |
967 | |
968 | /* Init v6 extension headers. */ | |
248b238d DL |
969 | err = ipv6_exthdrs_init(); |
970 | if (err) | |
971 | goto ipv6_exthdrs_fail; | |
972 | ||
853cbbaa DL |
973 | err = ipv6_frag_init(); |
974 | if (err) | |
975 | goto ipv6_frag_fail; | |
1da177e4 LT |
976 | |
977 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
978 | err = udpv6_init(); |
979 | if (err) | |
980 | goto udpv6_fail; | |
e2ed4052 | 981 | |
7f4e4868 DL |
982 | err = udplitev6_init(); |
983 | if (err) | |
984 | goto udplitev6_fail; | |
985 | ||
986 | err = tcpv6_init(); | |
987 | if (err) | |
988 | goto tcpv6_fail; | |
989 | ||
990 | err = ipv6_packet_init(); | |
991 | if (err) | |
992 | goto ipv6_packet_fail; | |
94911fe3 BT |
993 | |
994 | #ifdef CONFIG_SYSCTL | |
995 | err = ipv6_sysctl_register(); | |
996 | if (err) | |
997 | goto sysctl_fail; | |
998 | #endif | |
1da177e4 LT |
999 | out: |
1000 | return err; | |
1001 | ||
94911fe3 BT |
1002 | #ifdef CONFIG_SYSCTL |
1003 | sysctl_fail: | |
1004 | ipv6_packet_cleanup(); | |
1005 | #endif | |
7f4e4868 DL |
1006 | ipv6_packet_fail: |
1007 | tcpv6_exit(); | |
1008 | tcpv6_fail: | |
1009 | udplitev6_exit(); | |
1010 | udplitev6_fail: | |
1011 | udpv6_exit(); | |
1012 | udpv6_fail: | |
1013 | ipv6_frag_exit(); | |
853cbbaa DL |
1014 | ipv6_frag_fail: |
1015 | ipv6_exthdrs_exit(); | |
248b238d DL |
1016 | ipv6_exthdrs_fail: |
1017 | addrconf_cleanup(); | |
1da177e4 LT |
1018 | addrconf_fail: |
1019 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1020 | ip6_flowlabel_fail: |
1da177e4 | 1021 | ip6_route_cleanup(); |
e2fddf5e | 1022 | ip6_route_fail: |
1da177e4 LT |
1023 | #ifdef CONFIG_PROC_FS |
1024 | if6_proc_exit(); | |
1025 | proc_if6_fail: | |
1026 | ac6_proc_exit(); | |
1027 | proc_anycast6_fail: | |
1028 | ipv6_misc_proc_exit(); | |
1029 | proc_misc6_fail: | |
ba4e58ec GR |
1030 | udplite6_proc_exit(); |
1031 | proc_udplite6_fail: | |
1da177e4 LT |
1032 | udp6_proc_exit(); |
1033 | proc_udp6_fail: | |
1034 | tcp6_proc_exit(); | |
1035 | proc_tcp6_fail: | |
1036 | raw6_proc_exit(); | |
1037 | proc_raw6_fail: | |
1038 | #endif | |
2cc7d573 HW |
1039 | ipv6_netfilter_fini(); |
1040 | netfilter_fail: | |
1da177e4 LT |
1041 | igmp6_cleanup(); |
1042 | igmp_fail: | |
1043 | ndisc_cleanup(); | |
1044 | ndisc_fail: | |
1045 | icmpv6_cleanup(); | |
1046 | icmp_fail: | |
81c1c178 DL |
1047 | unregister_pernet_subsys(&inet6_net_ops); |
1048 | register_pernet_fail: | |
1da177e4 | 1049 | cleanup_ipv6_mibs(); |
8eb55910 DM |
1050 | out_unregister_sock: |
1051 | sock_unregister(PF_INET6); | |
e2fddf5e | 1052 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1053 | out_sock_register_fail: |
1054 | rawv6_exit(); | |
1da177e4 LT |
1055 | out_unregister_raw_proto: |
1056 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1057 | out_unregister_udplite_proto: |
1058 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1059 | out_unregister_udp_proto: |
1060 | proto_unregister(&udpv6_prot); | |
1061 | out_unregister_tcp_proto: | |
1062 | proto_unregister(&tcpv6_prot); | |
1063 | goto out; | |
1064 | } | |
1065 | module_init(inet6_init); | |
1066 | ||
1067 | static void __exit inet6_exit(void) | |
1068 | { | |
1069 | /* First of all disallow new sockets creation. */ | |
1070 | sock_unregister(PF_INET6); | |
c127ea2c TG |
1071 | /* Disallow any further netlink messages */ |
1072 | rtnl_unregister_all(PF_INET6); | |
ca17c233 | 1073 | |
94911fe3 BT |
1074 | #ifdef CONFIG_SYSCTL |
1075 | ipv6_sysctl_unregister(); | |
1076 | #endif | |
7f4e4868 DL |
1077 | udpv6_exit(); |
1078 | udplitev6_exit(); | |
1079 | tcpv6_exit(); | |
1080 | ||
ca17c233 JJ |
1081 | /* Cleanup code parts. */ |
1082 | ipv6_packet_cleanup(); | |
853cbbaa | 1083 | ipv6_frag_exit(); |
248b238d | 1084 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1085 | addrconf_cleanup(); |
1086 | ip6_flowlabel_cleanup(); | |
1087 | ip6_route_cleanup(); | |
1da177e4 | 1088 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1089 | |
1090 | /* Cleanup code parts. */ | |
1da177e4 LT |
1091 | if6_proc_exit(); |
1092 | ac6_proc_exit(); | |
1ab1457c | 1093 | ipv6_misc_proc_exit(); |
1ab1457c | 1094 | udplite6_proc_exit(); |
ca17c233 | 1095 | udp6_proc_exit(); |
1ab1457c YH |
1096 | tcp6_proc_exit(); |
1097 | raw6_proc_exit(); | |
2c8d7ca0 | 1098 | #endif |
2cc7d573 | 1099 | ipv6_netfilter_fini(); |
ca17c233 | 1100 | igmp6_cleanup(); |
1da177e4 LT |
1101 | ndisc_cleanup(); |
1102 | icmpv6_cleanup(); | |
7f4e4868 | 1103 | rawv6_exit(); |
94911fe3 | 1104 | |
81c1c178 | 1105 | unregister_pernet_subsys(&inet6_net_ops); |
1da177e4 LT |
1106 | cleanup_ipv6_mibs(); |
1107 | proto_unregister(&rawv6_prot); | |
ca17c233 | 1108 | proto_unregister(&udplitev6_prot); |
1da177e4 LT |
1109 | proto_unregister(&udpv6_prot); |
1110 | proto_unregister(&tcpv6_prot); | |
1111 | } | |
1112 | module_exit(inet6_exit); | |
1113 | ||
1114 | MODULE_ALIAS_NETPROTO(PF_INET6); |