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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 | * | |
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 | |
1b8d7ae4 EB |
95 | if (net != &init_net) |
96 | return -EAFNOSUPPORT; | |
97 | ||
b3da2cf3 DM |
98 | if (sock->type != SOCK_RAW && |
99 | sock->type != SOCK_DGRAM && | |
100 | !inet_ehash_secret) | |
101 | build_ehash_secret(); | |
102 | ||
1da177e4 LT |
103 | /* Look for the requested type/protocol pair. */ |
104 | answer = NULL; | |
af1afe86 YH |
105 | lookup_protocol: |
106 | err = -ESOCKTNOSUPPORT; | |
1da177e4 LT |
107 | rcu_read_lock(); |
108 | list_for_each_rcu(p, &inetsw6[sock->type]) { | |
109 | answer = list_entry(p, struct inet_protosw, list); | |
110 | ||
111 | /* Check the non-wild match. */ | |
112 | if (protocol == answer->protocol) { | |
113 | if (protocol != IPPROTO_IP) | |
114 | break; | |
115 | } else { | |
116 | /* Check for the two wild cases. */ | |
117 | if (IPPROTO_IP == protocol) { | |
118 | protocol = answer->protocol; | |
119 | break; | |
120 | } | |
121 | if (IPPROTO_IP == answer->protocol) | |
122 | break; | |
123 | } | |
af1afe86 | 124 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
125 | answer = NULL; |
126 | } | |
127 | ||
af1afe86 YH |
128 | if (!answer) { |
129 | if (try_loading_module < 2) { | |
130 | rcu_read_unlock(); | |
131 | /* | |
132 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
133 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
134 | */ | |
135 | if (++try_loading_module == 1) | |
136 | request_module("net-pf-%d-proto-%d-type-%d", | |
137 | PF_INET6, protocol, sock->type); | |
138 | /* | |
139 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
140 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
141 | */ | |
142 | else | |
143 | request_module("net-pf-%d-proto-%d", | |
144 | PF_INET6, protocol); | |
145 | goto lookup_protocol; | |
146 | } else | |
147 | goto out_rcu_unlock; | |
148 | } | |
149 | ||
150 | err = -EPERM; | |
1da177e4 LT |
151 | if (answer->capability > 0 && !capable(answer->capability)) |
152 | goto out_rcu_unlock; | |
1da177e4 LT |
153 | |
154 | sock->ops = answer->ops; | |
1da177e4 LT |
155 | answer_prot = answer->prot; |
156 | answer_no_check = answer->no_check; | |
157 | answer_flags = answer->flags; | |
158 | rcu_read_unlock(); | |
159 | ||
160 | BUG_TRAP(answer_prot->slab != NULL); | |
161 | ||
af1afe86 | 162 | err = -ENOBUFS; |
6257ff21 | 163 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
164 | if (sk == NULL) |
165 | goto out; | |
166 | ||
167 | sock_init_data(sock, sk); | |
168 | ||
af1afe86 | 169 | err = 0; |
1da177e4 LT |
170 | sk->sk_no_check = answer_no_check; |
171 | if (INET_PROTOSW_REUSE & answer_flags) | |
172 | sk->sk_reuse = 1; | |
173 | ||
174 | inet = inet_sk(sk); | |
469de9b9 | 175 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
176 | |
177 | if (SOCK_RAW == sock->type) { | |
178 | inet->num = protocol; | |
179 | if (IPPROTO_RAW == protocol) | |
180 | inet->hdrincl = 1; | |
181 | } | |
182 | ||
e6848976 | 183 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
184 | sk->sk_family = PF_INET6; |
185 | sk->sk_protocol = protocol; | |
186 | ||
187 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
188 | ||
189 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
190 | np->hop_limit = -1; | |
191 | np->mcast_hops = -1; | |
192 | np->mc_loop = 1; | |
193 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
99bc9c4e | 194 | np->ipv6only = init_net.ipv6.sysctl.bindv6only; |
1ab1457c | 195 | |
1da177e4 LT |
196 | /* Init the ipv4 part of the socket since we can have sockets |
197 | * using v6 API for ipv4. | |
198 | */ | |
199 | inet->uc_ttl = -1; | |
200 | ||
201 | inet->mc_loop = 1; | |
202 | inet->mc_ttl = 1; | |
203 | inet->mc_index = 0; | |
204 | inet->mc_list = NULL; | |
205 | ||
206 | if (ipv4_config.no_pmtu_disc) | |
207 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
208 | else | |
209 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 210 | /* |
e6848976 ACM |
211 | * Increment only the relevant sk_prot->socks debug field, this changes |
212 | * the previous behaviour of incrementing both the equivalent to | |
213 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
214 | * | |
215 | * This allows better debug granularity as we'll know exactly how many | |
216 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
217 | * transport protocol socks. -acme | |
218 | */ | |
219 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 220 | |
1da177e4 LT |
221 | if (inet->num) { |
222 | /* It assumes that any protocol which allows | |
223 | * the user to assign a number at socket | |
224 | * creation time automatically shares. | |
225 | */ | |
e69a4adc | 226 | inet->sport = htons(inet->num); |
1da177e4 LT |
227 | sk->sk_prot->hash(sk); |
228 | } | |
229 | if (sk->sk_prot->init) { | |
af1afe86 YH |
230 | err = sk->sk_prot->init(sk); |
231 | if (err) { | |
1da177e4 LT |
232 | sk_common_release(sk); |
233 | goto out; | |
234 | } | |
235 | } | |
236 | out: | |
af1afe86 | 237 | return err; |
1da177e4 LT |
238 | out_rcu_unlock: |
239 | rcu_read_unlock(); | |
240 | goto out; | |
241 | } | |
242 | ||
243 | ||
244 | /* bind for INET6 API */ | |
245 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
246 | { | |
247 | struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; | |
248 | struct sock *sk = sock->sk; | |
249 | struct inet_sock *inet = inet_sk(sk); | |
250 | struct ipv6_pinfo *np = inet6_sk(sk); | |
fd683222 | 251 | __be32 v4addr = 0; |
1da177e4 LT |
252 | unsigned short snum; |
253 | int addr_type = 0; | |
254 | int err = 0; | |
255 | ||
256 | /* If the socket has its own bind function then use it. */ | |
257 | if (sk->sk_prot->bind) | |
258 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
259 | ||
260 | if (addr_len < SIN6_LEN_RFC2133) | |
261 | return -EINVAL; | |
262 | addr_type = ipv6_addr_type(&addr->sin6_addr); | |
263 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
264 | return -EINVAL; | |
265 | ||
266 | snum = ntohs(addr->sin6_port); | |
267 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
268 | return -EACCES; | |
269 | ||
270 | lock_sock(sk); | |
271 | ||
272 | /* Check these errors (active socket, double bind). */ | |
273 | if (sk->sk_state != TCP_CLOSE || inet->num) { | |
274 | err = -EINVAL; | |
275 | goto out; | |
276 | } | |
277 | ||
278 | /* Check if the address belongs to the host. */ | |
279 | if (addr_type == IPV6_ADDR_MAPPED) { | |
280 | v4addr = addr->sin6_addr.s6_addr32[3]; | |
6b175b26 | 281 | if (inet_addr_type(&init_net, v4addr) != RTN_LOCAL) { |
1da177e4 LT |
282 | err = -EADDRNOTAVAIL; |
283 | goto out; | |
284 | } | |
285 | } else { | |
286 | if (addr_type != IPV6_ADDR_ANY) { | |
287 | struct net_device *dev = NULL; | |
288 | ||
289 | if (addr_type & IPV6_ADDR_LINKLOCAL) { | |
290 | if (addr_len >= sizeof(struct sockaddr_in6) && | |
291 | addr->sin6_scope_id) { | |
292 | /* Override any existing binding, if another one | |
293 | * is supplied by user. | |
294 | */ | |
295 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
296 | } | |
1ab1457c | 297 | |
1da177e4 LT |
298 | /* Binding to link-local address requires an interface */ |
299 | if (!sk->sk_bound_dev_if) { | |
300 | err = -EINVAL; | |
301 | goto out; | |
302 | } | |
881d966b | 303 | dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if); |
1da177e4 LT |
304 | if (!dev) { |
305 | err = -ENODEV; | |
306 | goto out; | |
307 | } | |
308 | } | |
309 | ||
310 | /* ipv4 addr of the socket is invalid. Only the | |
311 | * unspecified and mapped address have a v4 equivalent. | |
312 | */ | |
313 | v4addr = LOOPBACK4_IPV6; | |
314 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
bfeade08 DL |
315 | if (!ipv6_chk_addr(&init_net, &addr->sin6_addr, |
316 | dev, 0)) { | |
1da177e4 LT |
317 | if (dev) |
318 | dev_put(dev); | |
319 | err = -EADDRNOTAVAIL; | |
320 | goto out; | |
321 | } | |
322 | } | |
323 | if (dev) | |
324 | dev_put(dev); | |
325 | } | |
326 | } | |
327 | ||
328 | inet->rcv_saddr = v4addr; | |
329 | inet->saddr = v4addr; | |
330 | ||
331 | ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); | |
1ab1457c | 332 | |
1da177e4 LT |
333 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
334 | ipv6_addr_copy(&np->saddr, &addr->sin6_addr); | |
335 | ||
336 | /* Make sure we are allowed to bind here. */ | |
337 | if (sk->sk_prot->get_port(sk, snum)) { | |
338 | inet_reset_saddr(sk); | |
339 | err = -EADDRINUSE; | |
340 | goto out; | |
341 | } | |
342 | ||
343 | if (addr_type != IPV6_ADDR_ANY) | |
344 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; | |
345 | if (snum) | |
346 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
e69a4adc | 347 | inet->sport = htons(inet->num); |
1da177e4 LT |
348 | inet->dport = 0; |
349 | inet->daddr = 0; | |
350 | out: | |
351 | release_sock(sk); | |
352 | return err; | |
353 | } | |
354 | ||
7159039a YH |
355 | EXPORT_SYMBOL(inet6_bind); |
356 | ||
1da177e4 LT |
357 | int inet6_release(struct socket *sock) |
358 | { | |
359 | struct sock *sk = sock->sk; | |
360 | ||
361 | if (sk == NULL) | |
362 | return -EINVAL; | |
363 | ||
364 | /* Free mc lists */ | |
365 | ipv6_sock_mc_close(sk); | |
366 | ||
367 | /* Free ac lists */ | |
368 | ipv6_sock_ac_close(sk); | |
369 | ||
370 | return inet_release(sock); | |
371 | } | |
372 | ||
7159039a YH |
373 | EXPORT_SYMBOL(inet6_release); |
374 | ||
1da177e4 LT |
375 | int inet6_destroy_sock(struct sock *sk) |
376 | { | |
377 | struct ipv6_pinfo *np = inet6_sk(sk); | |
378 | struct sk_buff *skb; | |
379 | struct ipv6_txoptions *opt; | |
380 | ||
1da177e4 LT |
381 | /* Release rx options */ |
382 | ||
383 | if ((skb = xchg(&np->pktoptions, NULL)) != NULL) | |
384 | kfree_skb(skb); | |
385 | ||
386 | /* Free flowlabels */ | |
387 | fl6_free_socklist(sk); | |
388 | ||
389 | /* Free tx options */ | |
390 | ||
391 | if ((opt = xchg(&np->opt, NULL)) != NULL) | |
392 | sock_kfree_s(sk, opt, opt->tot_len); | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
3cf3dc6c ACM |
397 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
398 | ||
1da177e4 LT |
399 | /* |
400 | * This does both peername and sockname. | |
401 | */ | |
1ab1457c | 402 | |
1da177e4 LT |
403 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
404 | int *uaddr_len, int peer) | |
405 | { | |
406 | struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; | |
407 | struct sock *sk = sock->sk; | |
408 | struct inet_sock *inet = inet_sk(sk); | |
409 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 410 | |
1da177e4 LT |
411 | sin->sin6_family = AF_INET6; |
412 | sin->sin6_flowinfo = 0; | |
413 | sin->sin6_scope_id = 0; | |
414 | if (peer) { | |
415 | if (!inet->dport) | |
416 | return -ENOTCONN; | |
417 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
418 | peer == 1) | |
419 | return -ENOTCONN; | |
420 | sin->sin6_port = inet->dport; | |
421 | ipv6_addr_copy(&sin->sin6_addr, &np->daddr); | |
422 | if (np->sndflow) | |
423 | sin->sin6_flowinfo = np->flow_label; | |
424 | } else { | |
425 | if (ipv6_addr_any(&np->rcv_saddr)) | |
426 | ipv6_addr_copy(&sin->sin6_addr, &np->saddr); | |
427 | else | |
428 | ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); | |
429 | ||
430 | sin->sin6_port = inet->sport; | |
431 | } | |
432 | if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
433 | sin->sin6_scope_id = sk->sk_bound_dev_if; | |
434 | *uaddr_len = sizeof(*sin); | |
435 | return(0); | |
436 | } | |
437 | ||
7159039a YH |
438 | EXPORT_SYMBOL(inet6_getname); |
439 | ||
1da177e4 LT |
440 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
441 | { | |
442 | struct sock *sk = sock->sk; | |
5578689a | 443 | struct net *net = sk->sk_net; |
1da177e4 | 444 | |
1ab1457c | 445 | switch(cmd) |
1da177e4 LT |
446 | { |
447 | case SIOCGSTAMP: | |
448 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
449 | ||
ae40eb1e ED |
450 | case SIOCGSTAMPNS: |
451 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
452 | ||
1da177e4 LT |
453 | case SIOCADDRT: |
454 | case SIOCDELRT: | |
1ab1457c | 455 | |
5578689a | 456 | return(ipv6_route_ioctl(net, cmd, (void __user *)arg)); |
1da177e4 LT |
457 | |
458 | case SIOCSIFADDR: | |
459 | return addrconf_add_ifaddr((void __user *) arg); | |
460 | case SIOCDIFADDR: | |
461 | return addrconf_del_ifaddr((void __user *) arg); | |
462 | case SIOCSIFDSTADDR: | |
463 | return addrconf_set_dstaddr((void __user *) arg); | |
464 | default: | |
b5e5fa5e CH |
465 | if (!sk->sk_prot->ioctl) |
466 | return -ENOIOCTLCMD; | |
467 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
468 | } |
469 | /*NOTREACHED*/ | |
470 | return(0); | |
471 | } | |
472 | ||
7159039a YH |
473 | EXPORT_SYMBOL(inet6_ioctl); |
474 | ||
90ddc4f0 | 475 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
476 | .family = PF_INET6, |
477 | .owner = THIS_MODULE, | |
478 | .release = inet6_release, | |
479 | .bind = inet6_bind, | |
480 | .connect = inet_stream_connect, /* ok */ | |
481 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
482 | .accept = inet_accept, /* ok */ | |
483 | .getname = inet6_getname, | |
484 | .poll = tcp_poll, /* ok */ | |
485 | .ioctl = inet6_ioctl, /* must change */ | |
486 | .listen = inet_listen, /* ok */ | |
487 | .shutdown = inet_shutdown, /* ok */ | |
488 | .setsockopt = sock_common_setsockopt, /* ok */ | |
489 | .getsockopt = sock_common_getsockopt, /* ok */ | |
3516ffb0 | 490 | .sendmsg = tcp_sendmsg, /* ok */ |
543d9cfe ACM |
491 | .recvmsg = sock_common_recvmsg, /* ok */ |
492 | .mmap = sock_no_mmap, | |
493 | .sendpage = tcp_sendpage, | |
a0974dd3 | 494 | .splice_read = tcp_splice_read, |
3fdadf7d | 495 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
496 | .compat_setsockopt = compat_sock_common_setsockopt, |
497 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 498 | #endif |
1da177e4 LT |
499 | }; |
500 | ||
90ddc4f0 | 501 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
502 | .family = PF_INET6, |
503 | .owner = THIS_MODULE, | |
504 | .release = inet6_release, | |
505 | .bind = inet6_bind, | |
506 | .connect = inet_dgram_connect, /* ok */ | |
507 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
508 | .accept = sock_no_accept, /* a do nothing */ | |
509 | .getname = inet6_getname, | |
510 | .poll = udp_poll, /* ok */ | |
511 | .ioctl = inet6_ioctl, /* must change */ | |
512 | .listen = sock_no_listen, /* ok */ | |
513 | .shutdown = inet_shutdown, /* ok */ | |
514 | .setsockopt = sock_common_setsockopt, /* ok */ | |
515 | .getsockopt = sock_common_getsockopt, /* ok */ | |
516 | .sendmsg = inet_sendmsg, /* ok */ | |
517 | .recvmsg = sock_common_recvmsg, /* ok */ | |
518 | .mmap = sock_no_mmap, | |
519 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 520 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
521 | .compat_setsockopt = compat_sock_common_setsockopt, |
522 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 523 | #endif |
1da177e4 LT |
524 | }; |
525 | ||
526 | static struct net_proto_family inet6_family_ops = { | |
527 | .family = PF_INET6, | |
528 | .create = inet6_create, | |
529 | .owner = THIS_MODULE, | |
530 | }; | |
531 | ||
87c3efbf | 532 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
533 | { |
534 | struct list_head *lh; | |
535 | struct inet_protosw *answer; | |
1da177e4 | 536 | struct list_head *last_perm; |
87c3efbf DL |
537 | int protocol = p->protocol; |
538 | int ret; | |
1da177e4 LT |
539 | |
540 | spin_lock_bh(&inetsw6_lock); | |
541 | ||
87c3efbf | 542 | ret = -EINVAL; |
1da177e4 LT |
543 | if (p->type >= SOCK_MAX) |
544 | goto out_illegal; | |
545 | ||
546 | /* If we are trying to override a permanent protocol, bail. */ | |
547 | answer = NULL; | |
87c3efbf | 548 | ret = -EPERM; |
1da177e4 LT |
549 | last_perm = &inetsw6[p->type]; |
550 | list_for_each(lh, &inetsw6[p->type]) { | |
551 | answer = list_entry(lh, struct inet_protosw, list); | |
552 | ||
553 | /* Check only the non-wild match. */ | |
554 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
555 | if (protocol == answer->protocol) | |
556 | break; | |
557 | last_perm = lh; | |
558 | } | |
559 | ||
560 | answer = NULL; | |
561 | } | |
562 | if (answer) | |
563 | goto out_permanent; | |
564 | ||
565 | /* Add the new entry after the last permanent entry if any, so that | |
566 | * the new entry does not override a permanent entry when matched with | |
567 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 568 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
569 | * system automatically returns to the old behavior. |
570 | */ | |
571 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 572 | ret = 0; |
1da177e4 LT |
573 | out: |
574 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 575 | return ret; |
1da177e4 LT |
576 | |
577 | out_permanent: | |
578 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", | |
579 | protocol); | |
580 | goto out; | |
581 | ||
582 | out_illegal: | |
583 | printk(KERN_ERR | |
584 | "Ignoring attempt to register invalid socket type %d.\n", | |
585 | p->type); | |
586 | goto out; | |
587 | } | |
588 | ||
7159039a YH |
589 | EXPORT_SYMBOL(inet6_register_protosw); |
590 | ||
1da177e4 LT |
591 | void |
592 | inet6_unregister_protosw(struct inet_protosw *p) | |
593 | { | |
594 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
595 | printk(KERN_ERR | |
596 | "Attempt to unregister permanent protocol %d.\n", | |
597 | p->protocol); | |
598 | } else { | |
599 | spin_lock_bh(&inetsw6_lock); | |
600 | list_del_rcu(&p->list); | |
601 | spin_unlock_bh(&inetsw6_lock); | |
602 | ||
603 | synchronize_net(); | |
604 | } | |
605 | } | |
606 | ||
7159039a YH |
607 | EXPORT_SYMBOL(inet6_unregister_protosw); |
608 | ||
b9750ce1 ACM |
609 | int inet6_sk_rebuild_header(struct sock *sk) |
610 | { | |
611 | int err; | |
612 | struct dst_entry *dst; | |
613 | struct ipv6_pinfo *np = inet6_sk(sk); | |
614 | ||
615 | dst = __sk_dst_check(sk, np->dst_cookie); | |
616 | ||
617 | if (dst == NULL) { | |
618 | struct inet_sock *inet = inet_sk(sk); | |
619 | struct in6_addr *final_p = NULL, final; | |
620 | struct flowi fl; | |
621 | ||
622 | memset(&fl, 0, sizeof(fl)); | |
623 | fl.proto = sk->sk_protocol; | |
624 | ipv6_addr_copy(&fl.fl6_dst, &np->daddr); | |
625 | ipv6_addr_copy(&fl.fl6_src, &np->saddr); | |
626 | fl.fl6_flowlabel = np->flow_label; | |
627 | fl.oif = sk->sk_bound_dev_if; | |
628 | fl.fl_ip_dport = inet->dport; | |
629 | fl.fl_ip_sport = inet->sport; | |
beb8d13b | 630 | security_sk_classify_flow(sk, &fl); |
b9750ce1 ACM |
631 | |
632 | if (np->opt && np->opt->srcrt) { | |
633 | struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; | |
634 | ipv6_addr_copy(&final, &fl.fl6_dst); | |
635 | ipv6_addr_copy(&fl.fl6_dst, rt0->addr); | |
636 | final_p = &final; | |
637 | } | |
638 | ||
639 | err = ip6_dst_lookup(sk, &dst, &fl); | |
640 | if (err) { | |
641 | sk->sk_route_caps = 0; | |
642 | return err; | |
643 | } | |
644 | if (final_p) | |
645 | ipv6_addr_copy(&fl.fl6_dst, final_p); | |
646 | ||
647 | if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) { | |
648 | sk->sk_err_soft = -err; | |
649 | return err; | |
650 | } | |
651 | ||
8e1ef0a9 | 652 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
653 | } |
654 | ||
655 | return 0; | |
656 | } | |
657 | ||
658 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); | |
659 | ||
399c07de ACM |
660 | int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) |
661 | { | |
662 | struct ipv6_pinfo *np = inet6_sk(sk); | |
663 | struct inet6_skb_parm *opt = IP6CB(skb); | |
664 | ||
665 | if (np->rxopt.all) { | |
666 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
667 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
668 | ((IPV6_FLOWINFO_MASK & |
669 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
670 | np->rxopt.bits.rxflow) || |
671 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
672 | np->rxopt.bits.osrcrt)) || | |
673 | ((opt->dst1 || opt->dst0) && | |
674 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
675 | return 1; | |
676 | } | |
677 | return 0; | |
678 | } | |
679 | ||
680 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); | |
681 | ||
662397fd YH |
682 | static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb, |
683 | int proto) | |
684 | { | |
685 | struct inet6_protocol *ops = NULL; | |
686 | ||
687 | for (;;) { | |
688 | struct ipv6_opt_hdr *opth; | |
689 | int len; | |
690 | ||
691 | if (proto != NEXTHDR_HOP) { | |
692 | ops = rcu_dereference(inet6_protos[proto]); | |
693 | ||
694 | if (unlikely(!ops)) | |
695 | break; | |
696 | ||
697 | if (!(ops->flags & INET6_PROTO_GSO_EXTHDR)) | |
698 | break; | |
699 | } | |
700 | ||
701 | if (unlikely(!pskb_may_pull(skb, 8))) | |
702 | break; | |
703 | ||
704 | opth = (void *)skb->data; | |
705 | len = ipv6_optlen(opth); | |
706 | ||
707 | if (unlikely(!pskb_may_pull(skb, len))) | |
708 | break; | |
709 | ||
710 | proto = opth->nexthdr; | |
711 | __skb_pull(skb, len); | |
712 | } | |
713 | ||
714 | return ops; | |
715 | } | |
716 | ||
717 | static int ipv6_gso_send_check(struct sk_buff *skb) | |
718 | { | |
719 | struct ipv6hdr *ipv6h; | |
720 | struct inet6_protocol *ops; | |
721 | int err = -EINVAL; | |
722 | ||
723 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
724 | goto out; | |
725 | ||
726 | ipv6h = ipv6_hdr(skb); | |
727 | __skb_pull(skb, sizeof(*ipv6h)); | |
728 | err = -EPROTONOSUPPORT; | |
729 | ||
730 | rcu_read_lock(); | |
731 | ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); | |
732 | if (likely(ops && ops->gso_send_check)) { | |
733 | skb_reset_transport_header(skb); | |
734 | err = ops->gso_send_check(skb); | |
735 | } | |
736 | rcu_read_unlock(); | |
737 | ||
738 | out: | |
739 | return err; | |
740 | } | |
741 | ||
742 | static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features) | |
743 | { | |
744 | struct sk_buff *segs = ERR_PTR(-EINVAL); | |
745 | struct ipv6hdr *ipv6h; | |
746 | struct inet6_protocol *ops; | |
747 | ||
748 | if (!(features & NETIF_F_V6_CSUM)) | |
749 | features &= ~NETIF_F_SG; | |
750 | ||
751 | if (unlikely(skb_shinfo(skb)->gso_type & | |
752 | ~(SKB_GSO_UDP | | |
753 | SKB_GSO_DODGY | | |
754 | SKB_GSO_TCP_ECN | | |
755 | SKB_GSO_TCPV6 | | |
756 | 0))) | |
757 | goto out; | |
758 | ||
759 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
760 | goto out; | |
761 | ||
762 | ipv6h = ipv6_hdr(skb); | |
763 | __skb_pull(skb, sizeof(*ipv6h)); | |
764 | segs = ERR_PTR(-EPROTONOSUPPORT); | |
765 | ||
766 | rcu_read_lock(); | |
767 | ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); | |
768 | if (likely(ops && ops->gso_segment)) { | |
769 | skb_reset_transport_header(skb); | |
770 | segs = ops->gso_segment(skb, features); | |
771 | } | |
772 | rcu_read_unlock(); | |
773 | ||
774 | if (unlikely(IS_ERR(segs))) | |
775 | goto out; | |
776 | ||
777 | for (skb = segs; skb; skb = skb->next) { | |
778 | ipv6h = ipv6_hdr(skb); | |
779 | ipv6h->payload_len = htons(skb->len - skb->mac_len - | |
780 | sizeof(*ipv6h)); | |
781 | } | |
782 | ||
783 | out: | |
784 | return segs; | |
785 | } | |
786 | ||
787 | static struct packet_type ipv6_packet_type = { | |
788 | .type = __constant_htons(ETH_P_IPV6), | |
789 | .func = ipv6_rcv, | |
790 | .gso_send_check = ipv6_gso_send_check, | |
791 | .gso_segment = ipv6_gso_segment, | |
792 | }; | |
793 | ||
794 | static int __init ipv6_packet_init(void) | |
795 | { | |
796 | dev_add_pack(&ipv6_packet_type); | |
797 | return 0; | |
798 | } | |
799 | ||
800 | static void ipv6_packet_cleanup(void) | |
801 | { | |
802 | dev_remove_pack(&ipv6_packet_type); | |
803 | } | |
804 | ||
1da177e4 LT |
805 | static int __init init_ipv6_mibs(void) |
806 | { | |
c69bce20 YH |
807 | if (snmp_mib_init((void **)ipv6_statistics, |
808 | sizeof(struct ipstats_mib)) < 0) | |
1da177e4 | 809 | goto err_ip_mib; |
c69bce20 YH |
810 | if (snmp_mib_init((void **)icmpv6_statistics, |
811 | sizeof(struct icmpv6_mib)) < 0) | |
1da177e4 | 812 | goto err_icmp_mib; |
14878f75 | 813 | if (snmp_mib_init((void **)icmpv6msg_statistics, |
c69bce20 | 814 | sizeof(struct icmpv6msg_mib)) < 0) |
14878f75 | 815 | goto err_icmpmsg_mib; |
c69bce20 | 816 | if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0) |
1da177e4 | 817 | goto err_udp_mib; |
e898d4db | 818 | #ifdef CONFIG_IP_UDPLITE |
c69bce20 YH |
819 | if (snmp_mib_init((void **)udplite_stats_in6, |
820 | sizeof (struct udp_mib)) < 0) | |
ba4e58ec | 821 | goto err_udplite_mib; |
e898d4db | 822 | #endif |
1da177e4 LT |
823 | return 0; |
824 | ||
e898d4db | 825 | #ifdef CONFIG_IP_UDPLITE |
ba4e58ec | 826 | err_udplite_mib: |
e898d4db | 827 | #endif |
7f7d9a6b | 828 | snmp_mib_free((void **)udp_stats_in6); |
1da177e4 | 829 | err_udp_mib: |
14878f75 DS |
830 | snmp_mib_free((void **)icmpv6msg_statistics); |
831 | err_icmpmsg_mib: | |
7f7d9a6b | 832 | snmp_mib_free((void **)icmpv6_statistics); |
1da177e4 | 833 | err_icmp_mib: |
7f7d9a6b | 834 | snmp_mib_free((void **)ipv6_statistics); |
1da177e4 LT |
835 | err_ip_mib: |
836 | return -ENOMEM; | |
1ab1457c | 837 | |
1da177e4 LT |
838 | } |
839 | ||
840 | static void cleanup_ipv6_mibs(void) | |
841 | { | |
7f7d9a6b HX |
842 | snmp_mib_free((void **)ipv6_statistics); |
843 | snmp_mib_free((void **)icmpv6_statistics); | |
dc8a82ad | 844 | snmp_mib_free((void **)icmpv6msg_statistics); |
7f7d9a6b | 845 | snmp_mib_free((void **)udp_stats_in6); |
e898d4db | 846 | #ifdef CONFIG_IP_UDPLITE |
7f7d9a6b | 847 | snmp_mib_free((void **)udplite_stats_in6); |
e898d4db | 848 | #endif |
1da177e4 LT |
849 | } |
850 | ||
81c1c178 DL |
851 | static int inet6_net_init(struct net *net) |
852 | { | |
99bc9c4e | 853 | net->ipv6.sysctl.bindv6only = 0; |
4990509f DL |
854 | net->ipv6.sysctl.flush_delay = 0; |
855 | net->ipv6.sysctl.ip6_rt_max_size = 4096; | |
856 | net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; | |
857 | net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; | |
858 | net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; | |
859 | net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; | |
860 | net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; | |
861 | net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; | |
41a76906 | 862 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 863 | |
81c1c178 DL |
864 | return 0; |
865 | } | |
866 | ||
867 | static void inet6_net_exit(struct net *net) | |
868 | { | |
869 | return; | |
870 | } | |
871 | ||
872 | static struct pernet_operations inet6_net_ops = { | |
873 | .init = inet6_net_init, | |
874 | .exit = inet6_net_exit, | |
875 | }; | |
876 | ||
1da177e4 LT |
877 | static int __init inet6_init(void) |
878 | { | |
879 | struct sk_buff *dummy_skb; | |
1ab1457c | 880 | struct list_head *r; |
1da177e4 LT |
881 | int err; |
882 | ||
ef047f5e YH |
883 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); |
884 | ||
1da177e4 LT |
885 | err = proto_register(&tcpv6_prot, 1); |
886 | if (err) | |
887 | goto out; | |
888 | ||
889 | err = proto_register(&udpv6_prot, 1); | |
890 | if (err) | |
891 | goto out_unregister_tcp_proto; | |
892 | ||
e898d4db | 893 | #ifdef CONFIG_IP_UDPLITE |
ba4e58ec | 894 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
895 | if (err) |
896 | goto out_unregister_udp_proto; | |
e898d4db | 897 | #endif |
1da177e4 | 898 | |
ba4e58ec GR |
899 | err = proto_register(&rawv6_prot, 1); |
900 | if (err) | |
901 | goto out_unregister_udplite_proto; | |
902 | ||
1da177e4 LT |
903 | |
904 | /* Register the socket-side information for inet6_create. */ | |
905 | for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) | |
906 | INIT_LIST_HEAD(r); | |
907 | ||
908 | /* We MUST register RAW sockets before we create the ICMP6, | |
909 | * IGMP6, or NDISC control sockets. | |
910 | */ | |
7f4e4868 DL |
911 | err = rawv6_init(); |
912 | if (err) | |
913 | goto out_unregister_raw_proto; | |
1da177e4 LT |
914 | |
915 | /* Register the family here so that the init calls below will | |
916 | * be able to create sockets. (?? is this dangerous ??) | |
917 | */ | |
8eb55910 DM |
918 | err = sock_register(&inet6_family_ops); |
919 | if (err) | |
7f4e4868 | 920 | goto out_sock_register_fail; |
1da177e4 LT |
921 | |
922 | /* Initialise ipv6 mibs */ | |
923 | err = init_ipv6_mibs(); | |
924 | if (err) | |
8eb55910 | 925 | goto out_unregister_sock; |
1ab1457c | 926 | |
1da177e4 LT |
927 | /* |
928 | * ipngwg API draft makes clear that the correct semantics | |
929 | * for TCP and UDP is to consider one TCP and UDP instance | |
930 | * in a host availiable by both INET and INET6 APIs and | |
931 | * able to communicate via both network protocols. | |
932 | */ | |
933 | ||
81c1c178 DL |
934 | err = register_pernet_subsys(&inet6_net_ops); |
935 | if (err) | |
936 | goto register_pernet_fail; | |
937 | ||
1da177e4 | 938 | #ifdef CONFIG_SYSCTL |
291480c0 DL |
939 | err = ipv6_sysctl_register(); |
940 | if (err) | |
941 | goto sysctl_fail; | |
1da177e4 | 942 | #endif |
9b0f976f | 943 | err = icmpv6_init(); |
1da177e4 LT |
944 | if (err) |
945 | goto icmp_fail; | |
9b0f976f | 946 | err = ndisc_init(); |
1da177e4 LT |
947 | if (err) |
948 | goto ndisc_fail; | |
9b0f976f | 949 | err = igmp6_init(); |
1da177e4 LT |
950 | if (err) |
951 | goto igmp_fail; | |
2cc7d573 HW |
952 | err = ipv6_netfilter_init(); |
953 | if (err) | |
954 | goto netfilter_fail; | |
1da177e4 LT |
955 | /* Create /proc/foo6 entries. */ |
956 | #ifdef CONFIG_PROC_FS | |
957 | err = -ENOMEM; | |
958 | if (raw6_proc_init()) | |
959 | goto proc_raw6_fail; | |
960 | if (tcp6_proc_init()) | |
961 | goto proc_tcp6_fail; | |
962 | if (udp6_proc_init()) | |
963 | goto proc_udp6_fail; | |
ba4e58ec GR |
964 | if (udplite6_proc_init()) |
965 | goto proc_udplite6_fail; | |
1da177e4 LT |
966 | if (ipv6_misc_proc_init()) |
967 | goto proc_misc6_fail; | |
968 | ||
969 | if (ac6_proc_init()) | |
970 | goto proc_anycast6_fail; | |
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; | |
1da177e4 LT |
1009 | out: |
1010 | return err; | |
1011 | ||
7f4e4868 DL |
1012 | ipv6_packet_fail: |
1013 | tcpv6_exit(); | |
1014 | tcpv6_fail: | |
1015 | udplitev6_exit(); | |
1016 | udplitev6_fail: | |
1017 | udpv6_exit(); | |
1018 | udpv6_fail: | |
1019 | ipv6_frag_exit(); | |
853cbbaa DL |
1020 | ipv6_frag_fail: |
1021 | ipv6_exthdrs_exit(); | |
248b238d DL |
1022 | ipv6_exthdrs_fail: |
1023 | addrconf_cleanup(); | |
1da177e4 LT |
1024 | addrconf_fail: |
1025 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1026 | ip6_flowlabel_fail: |
1da177e4 | 1027 | ip6_route_cleanup(); |
e2fddf5e | 1028 | ip6_route_fail: |
1da177e4 LT |
1029 | #ifdef CONFIG_PROC_FS |
1030 | if6_proc_exit(); | |
1031 | proc_if6_fail: | |
1032 | ac6_proc_exit(); | |
1033 | proc_anycast6_fail: | |
1034 | ipv6_misc_proc_exit(); | |
1035 | proc_misc6_fail: | |
ba4e58ec GR |
1036 | udplite6_proc_exit(); |
1037 | proc_udplite6_fail: | |
1da177e4 LT |
1038 | udp6_proc_exit(); |
1039 | proc_udp6_fail: | |
1040 | tcp6_proc_exit(); | |
1041 | proc_tcp6_fail: | |
1042 | raw6_proc_exit(); | |
1043 | proc_raw6_fail: | |
1044 | #endif | |
2cc7d573 HW |
1045 | ipv6_netfilter_fini(); |
1046 | netfilter_fail: | |
1da177e4 LT |
1047 | igmp6_cleanup(); |
1048 | igmp_fail: | |
1049 | ndisc_cleanup(); | |
1050 | ndisc_fail: | |
1051 | icmpv6_cleanup(); | |
1052 | icmp_fail: | |
1053 | #ifdef CONFIG_SYSCTL | |
1054 | ipv6_sysctl_unregister(); | |
291480c0 | 1055 | sysctl_fail: |
1da177e4 | 1056 | #endif |
81c1c178 DL |
1057 | unregister_pernet_subsys(&inet6_net_ops); |
1058 | register_pernet_fail: | |
1da177e4 | 1059 | cleanup_ipv6_mibs(); |
8eb55910 DM |
1060 | out_unregister_sock: |
1061 | sock_unregister(PF_INET6); | |
e2fddf5e | 1062 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1063 | out_sock_register_fail: |
1064 | rawv6_exit(); | |
1da177e4 LT |
1065 | out_unregister_raw_proto: |
1066 | proto_unregister(&rawv6_prot); | |
ba4e58ec | 1067 | out_unregister_udplite_proto: |
e898d4db | 1068 | #ifdef CONFIG_IP_UDPLITE |
ba4e58ec | 1069 | proto_unregister(&udplitev6_prot); |
1da177e4 | 1070 | out_unregister_udp_proto: |
e898d4db | 1071 | #endif |
1da177e4 LT |
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 | |
7f4e4868 | 1086 | udpv6_exit(); |
e898d4db | 1087 | #ifdef CONFIG_IP_UDPLITE |
7f4e4868 | 1088 | udplitev6_exit(); |
e898d4db | 1089 | #endif |
7f4e4868 DL |
1090 | tcpv6_exit(); |
1091 | ||
ca17c233 JJ |
1092 | /* Cleanup code parts. */ |
1093 | ipv6_packet_cleanup(); | |
853cbbaa | 1094 | ipv6_frag_exit(); |
248b238d | 1095 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1096 | addrconf_cleanup(); |
1097 | ip6_flowlabel_cleanup(); | |
1098 | ip6_route_cleanup(); | |
1da177e4 | 1099 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1100 | |
1101 | /* Cleanup code parts. */ | |
1da177e4 LT |
1102 | if6_proc_exit(); |
1103 | ac6_proc_exit(); | |
1ab1457c | 1104 | ipv6_misc_proc_exit(); |
1ab1457c | 1105 | udplite6_proc_exit(); |
ca17c233 | 1106 | udp6_proc_exit(); |
1ab1457c YH |
1107 | tcp6_proc_exit(); |
1108 | raw6_proc_exit(); | |
2c8d7ca0 | 1109 | #endif |
2cc7d573 | 1110 | ipv6_netfilter_fini(); |
ca17c233 | 1111 | igmp6_cleanup(); |
1da177e4 LT |
1112 | ndisc_cleanup(); |
1113 | icmpv6_cleanup(); | |
7f4e4868 | 1114 | rawv6_exit(); |
1da177e4 | 1115 | #ifdef CONFIG_SYSCTL |
1ab1457c | 1116 | ipv6_sysctl_unregister(); |
1da177e4 | 1117 | #endif |
81c1c178 | 1118 | unregister_pernet_subsys(&inet6_net_ops); |
1da177e4 LT |
1119 | cleanup_ipv6_mibs(); |
1120 | proto_unregister(&rawv6_prot); | |
e898d4db | 1121 | #ifdef CONFIG_IP_UDPLITE |
ca17c233 | 1122 | proto_unregister(&udplitev6_prot); |
e898d4db | 1123 | #endif |
1da177e4 LT |
1124 | proto_unregister(&udpv6_prot); |
1125 | proto_unregister(&tcpv6_prot); | |
1126 | } | |
1127 | module_exit(inet6_exit); | |
1128 | ||
1129 | MODULE_ALIAS_NETPROTO(PF_INET6); |