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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> | |
1668e010 | 53 | #include <net/route.h> |
1da177e4 LT |
54 | #include <net/transp_v6.h> |
55 | #include <net/ip6_route.h> | |
56 | #include <net/addrconf.h> | |
57 | #ifdef CONFIG_IPV6_TUNNEL | |
58 | #include <net/ip6_tunnel.h> | |
59 | #endif | |
60 | ||
61 | #include <asm/uaccess.h> | |
62 | #include <asm/system.h> | |
7bc570c8 | 63 | #include <linux/mroute6.h> |
1da177e4 LT |
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; | |
1da177e4 LT |
87 | struct inet_protosw *answer; |
88 | struct proto *answer_prot; | |
89 | unsigned char answer_flags; | |
90 | char answer_no_check; | |
af1afe86 YH |
91 | int try_loading_module = 0; |
92 | int err; | |
1da177e4 | 93 | |
b3da2cf3 DM |
94 | if (sock->type != SOCK_RAW && |
95 | sock->type != SOCK_DGRAM && | |
96 | !inet_ehash_secret) | |
97 | build_ehash_secret(); | |
98 | ||
1da177e4 | 99 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
100 | lookup_protocol: |
101 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 102 | rcu_read_lock(); |
696adfe8 | 103 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 104 | |
696adfe8 | 105 | err = 0; |
1da177e4 LT |
106 | /* Check the non-wild match. */ |
107 | if (protocol == answer->protocol) { | |
108 | if (protocol != IPPROTO_IP) | |
109 | break; | |
110 | } else { | |
111 | /* Check for the two wild cases. */ | |
112 | if (IPPROTO_IP == protocol) { | |
113 | protocol = answer->protocol; | |
114 | break; | |
115 | } | |
116 | if (IPPROTO_IP == answer->protocol) | |
117 | break; | |
118 | } | |
af1afe86 | 119 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
120 | } |
121 | ||
696adfe8 | 122 | if (err) { |
af1afe86 YH |
123 | if (try_loading_module < 2) { |
124 | rcu_read_unlock(); | |
125 | /* | |
126 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
127 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
128 | */ | |
129 | if (++try_loading_module == 1) | |
130 | request_module("net-pf-%d-proto-%d-type-%d", | |
131 | PF_INET6, protocol, sock->type); | |
132 | /* | |
133 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
134 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
135 | */ | |
136 | else | |
137 | request_module("net-pf-%d-proto-%d", | |
138 | PF_INET6, protocol); | |
139 | goto lookup_protocol; | |
140 | } else | |
141 | goto out_rcu_unlock; | |
142 | } | |
143 | ||
144 | err = -EPERM; | |
1da177e4 LT |
145 | if (answer->capability > 0 && !capable(answer->capability)) |
146 | goto out_rcu_unlock; | |
1da177e4 LT |
147 | |
148 | sock->ops = answer->ops; | |
1da177e4 LT |
149 | answer_prot = answer->prot; |
150 | answer_no_check = answer->no_check; | |
151 | answer_flags = answer->flags; | |
152 | rcu_read_unlock(); | |
153 | ||
547b792c | 154 | WARN_ON(answer_prot->slab == NULL); |
1da177e4 | 155 | |
af1afe86 | 156 | err = -ENOBUFS; |
6257ff21 | 157 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
158 | if (sk == NULL) |
159 | goto out; | |
160 | ||
161 | sock_init_data(sock, sk); | |
162 | ||
af1afe86 | 163 | err = 0; |
1da177e4 LT |
164 | sk->sk_no_check = answer_no_check; |
165 | if (INET_PROTOSW_REUSE & answer_flags) | |
166 | sk->sk_reuse = 1; | |
167 | ||
168 | inet = inet_sk(sk); | |
469de9b9 | 169 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
170 | |
171 | if (SOCK_RAW == sock->type) { | |
172 | inet->num = protocol; | |
173 | if (IPPROTO_RAW == protocol) | |
174 | inet->hdrincl = 1; | |
175 | } | |
176 | ||
e6848976 | 177 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
178 | sk->sk_family = PF_INET6; |
179 | sk->sk_protocol = protocol; | |
180 | ||
181 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
182 | ||
183 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
184 | np->hop_limit = -1; | |
185 | np->mcast_hops = -1; | |
186 | np->mc_loop = 1; | |
187 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
2e761e05 | 188 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 189 | |
1da177e4 LT |
190 | /* Init the ipv4 part of the socket since we can have sockets |
191 | * using v6 API for ipv4. | |
192 | */ | |
193 | inet->uc_ttl = -1; | |
194 | ||
195 | inet->mc_loop = 1; | |
196 | inet->mc_ttl = 1; | |
197 | inet->mc_index = 0; | |
198 | inet->mc_list = NULL; | |
199 | ||
200 | if (ipv4_config.no_pmtu_disc) | |
201 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
202 | else | |
203 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 204 | /* |
e6848976 ACM |
205 | * Increment only the relevant sk_prot->socks debug field, this changes |
206 | * the previous behaviour of incrementing both the equivalent to | |
207 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
208 | * | |
209 | * This allows better debug granularity as we'll know exactly how many | |
210 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
211 | * transport protocol socks. -acme | |
212 | */ | |
213 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 214 | |
1da177e4 LT |
215 | if (inet->num) { |
216 | /* It assumes that any protocol which allows | |
217 | * the user to assign a number at socket | |
218 | * creation time automatically shares. | |
219 | */ | |
e69a4adc | 220 | inet->sport = htons(inet->num); |
1da177e4 LT |
221 | sk->sk_prot->hash(sk); |
222 | } | |
223 | if (sk->sk_prot->init) { | |
af1afe86 YH |
224 | err = sk->sk_prot->init(sk); |
225 | if (err) { | |
1da177e4 LT |
226 | sk_common_release(sk); |
227 | goto out; | |
228 | } | |
229 | } | |
230 | out: | |
af1afe86 | 231 | return err; |
1da177e4 LT |
232 | out_rcu_unlock: |
233 | rcu_read_unlock(); | |
234 | goto out; | |
235 | } | |
236 | ||
237 | ||
238 | /* bind for INET6 API */ | |
239 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
240 | { | |
241 | struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; | |
242 | struct sock *sk = sock->sk; | |
243 | struct inet_sock *inet = inet_sk(sk); | |
244 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 245 | struct net *net = sock_net(sk); |
fd683222 | 246 | __be32 v4addr = 0; |
1da177e4 LT |
247 | unsigned short snum; |
248 | int addr_type = 0; | |
249 | int err = 0; | |
250 | ||
251 | /* If the socket has its own bind function then use it. */ | |
252 | if (sk->sk_prot->bind) | |
253 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
254 | ||
255 | if (addr_len < SIN6_LEN_RFC2133) | |
256 | return -EINVAL; | |
257 | addr_type = ipv6_addr_type(&addr->sin6_addr); | |
258 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
259 | return -EINVAL; | |
260 | ||
261 | snum = ntohs(addr->sin6_port); | |
262 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
263 | return -EACCES; | |
264 | ||
265 | lock_sock(sk); | |
266 | ||
267 | /* Check these errors (active socket, double bind). */ | |
268 | if (sk->sk_state != TCP_CLOSE || inet->num) { | |
269 | err = -EINVAL; | |
270 | goto out; | |
271 | } | |
272 | ||
273 | /* Check if the address belongs to the host. */ | |
274 | if (addr_type == IPV6_ADDR_MAPPED) { | |
275 | v4addr = addr->sin6_addr.s6_addr32[3]; | |
075de939 | 276 | if (inet_addr_type(net, v4addr) != RTN_LOCAL) { |
1da177e4 LT |
277 | err = -EADDRNOTAVAIL; |
278 | goto out; | |
279 | } | |
280 | } else { | |
281 | if (addr_type != IPV6_ADDR_ANY) { | |
282 | struct net_device *dev = NULL; | |
283 | ||
284 | if (addr_type & IPV6_ADDR_LINKLOCAL) { | |
285 | if (addr_len >= sizeof(struct sockaddr_in6) && | |
286 | addr->sin6_scope_id) { | |
287 | /* Override any existing binding, if another one | |
288 | * is supplied by user. | |
289 | */ | |
290 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
291 | } | |
1ab1457c | 292 | |
1da177e4 LT |
293 | /* Binding to link-local address requires an interface */ |
294 | if (!sk->sk_bound_dev_if) { | |
295 | err = -EINVAL; | |
296 | goto out; | |
297 | } | |
075de939 | 298 | dev = dev_get_by_index(net, sk->sk_bound_dev_if); |
1da177e4 LT |
299 | if (!dev) { |
300 | err = -ENODEV; | |
301 | goto out; | |
302 | } | |
303 | } | |
304 | ||
305 | /* ipv4 addr of the socket is invalid. Only the | |
306 | * unspecified and mapped address have a v4 equivalent. | |
307 | */ | |
308 | v4addr = LOOPBACK4_IPV6; | |
309 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
075de939 | 310 | if (!ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 311 | dev, 0)) { |
1da177e4 LT |
312 | if (dev) |
313 | dev_put(dev); | |
314 | err = -EADDRNOTAVAIL; | |
315 | goto out; | |
316 | } | |
317 | } | |
318 | if (dev) | |
319 | dev_put(dev); | |
320 | } | |
321 | } | |
322 | ||
323 | inet->rcv_saddr = v4addr; | |
324 | inet->saddr = v4addr; | |
325 | ||
326 | ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); | |
1ab1457c | 327 | |
1da177e4 LT |
328 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
329 | ipv6_addr_copy(&np->saddr, &addr->sin6_addr); | |
330 | ||
331 | /* Make sure we are allowed to bind here. */ | |
332 | if (sk->sk_prot->get_port(sk, snum)) { | |
333 | inet_reset_saddr(sk); | |
334 | err = -EADDRINUSE; | |
335 | goto out; | |
336 | } | |
337 | ||
338 | if (addr_type != IPV6_ADDR_ANY) | |
339 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; | |
340 | if (snum) | |
341 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
e69a4adc | 342 | inet->sport = htons(inet->num); |
1da177e4 LT |
343 | inet->dport = 0; |
344 | inet->daddr = 0; | |
345 | out: | |
346 | release_sock(sk); | |
347 | return err; | |
348 | } | |
349 | ||
7159039a YH |
350 | EXPORT_SYMBOL(inet6_bind); |
351 | ||
1da177e4 LT |
352 | int inet6_release(struct socket *sock) |
353 | { | |
354 | struct sock *sk = sock->sk; | |
355 | ||
356 | if (sk == NULL) | |
357 | return -EINVAL; | |
358 | ||
359 | /* Free mc lists */ | |
360 | ipv6_sock_mc_close(sk); | |
361 | ||
362 | /* Free ac lists */ | |
363 | ipv6_sock_ac_close(sk); | |
364 | ||
365 | return inet_release(sock); | |
366 | } | |
367 | ||
7159039a YH |
368 | EXPORT_SYMBOL(inet6_release); |
369 | ||
7d06b2e0 | 370 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
371 | { |
372 | struct ipv6_pinfo *np = inet6_sk(sk); | |
373 | struct sk_buff *skb; | |
374 | struct ipv6_txoptions *opt; | |
375 | ||
1da177e4 LT |
376 | /* Release rx options */ |
377 | ||
378 | if ((skb = xchg(&np->pktoptions, NULL)) != NULL) | |
379 | kfree_skb(skb); | |
380 | ||
381 | /* Free flowlabels */ | |
382 | fl6_free_socklist(sk); | |
383 | ||
384 | /* Free tx options */ | |
385 | ||
386 | if ((opt = xchg(&np->opt, NULL)) != NULL) | |
387 | sock_kfree_s(sk, opt, opt->tot_len); | |
1da177e4 LT |
388 | } |
389 | ||
3cf3dc6c ACM |
390 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
391 | ||
1da177e4 LT |
392 | /* |
393 | * This does both peername and sockname. | |
394 | */ | |
1ab1457c | 395 | |
1da177e4 LT |
396 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
397 | int *uaddr_len, int peer) | |
398 | { | |
399 | struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; | |
400 | struct sock *sk = sock->sk; | |
401 | struct inet_sock *inet = inet_sk(sk); | |
402 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 403 | |
1da177e4 LT |
404 | sin->sin6_family = AF_INET6; |
405 | sin->sin6_flowinfo = 0; | |
406 | sin->sin6_scope_id = 0; | |
407 | if (peer) { | |
408 | if (!inet->dport) | |
409 | return -ENOTCONN; | |
410 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
411 | peer == 1) | |
412 | return -ENOTCONN; | |
413 | sin->sin6_port = inet->dport; | |
414 | ipv6_addr_copy(&sin->sin6_addr, &np->daddr); | |
415 | if (np->sndflow) | |
416 | sin->sin6_flowinfo = np->flow_label; | |
417 | } else { | |
418 | if (ipv6_addr_any(&np->rcv_saddr)) | |
419 | ipv6_addr_copy(&sin->sin6_addr, &np->saddr); | |
420 | else | |
421 | ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); | |
422 | ||
423 | sin->sin6_port = inet->sport; | |
424 | } | |
425 | if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
426 | sin->sin6_scope_id = sk->sk_bound_dev_if; | |
427 | *uaddr_len = sizeof(*sin); | |
428 | return(0); | |
429 | } | |
430 | ||
7159039a YH |
431 | EXPORT_SYMBOL(inet6_getname); |
432 | ||
1da177e4 LT |
433 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
434 | { | |
435 | struct sock *sk = sock->sk; | |
3b1e0a65 | 436 | struct net *net = sock_net(sk); |
1da177e4 | 437 | |
1ab1457c | 438 | switch(cmd) |
1da177e4 LT |
439 | { |
440 | case SIOCGSTAMP: | |
441 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
442 | ||
ae40eb1e ED |
443 | case SIOCGSTAMPNS: |
444 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
445 | ||
1da177e4 LT |
446 | case SIOCADDRT: |
447 | case SIOCDELRT: | |
1ab1457c | 448 | |
5578689a | 449 | return(ipv6_route_ioctl(net, cmd, (void __user *)arg)); |
1da177e4 LT |
450 | |
451 | case SIOCSIFADDR: | |
af284937 | 452 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 453 | case SIOCDIFADDR: |
af284937 | 454 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 455 | case SIOCSIFDSTADDR: |
af284937 | 456 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 457 | default: |
b5e5fa5e CH |
458 | if (!sk->sk_prot->ioctl) |
459 | return -ENOIOCTLCMD; | |
460 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
461 | } |
462 | /*NOTREACHED*/ | |
463 | return(0); | |
464 | } | |
465 | ||
7159039a YH |
466 | EXPORT_SYMBOL(inet6_ioctl); |
467 | ||
90ddc4f0 | 468 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
469 | .family = PF_INET6, |
470 | .owner = THIS_MODULE, | |
471 | .release = inet6_release, | |
472 | .bind = inet6_bind, | |
473 | .connect = inet_stream_connect, /* ok */ | |
474 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
475 | .accept = inet_accept, /* ok */ | |
476 | .getname = inet6_getname, | |
477 | .poll = tcp_poll, /* ok */ | |
478 | .ioctl = inet6_ioctl, /* must change */ | |
479 | .listen = inet_listen, /* ok */ | |
480 | .shutdown = inet_shutdown, /* ok */ | |
481 | .setsockopt = sock_common_setsockopt, /* ok */ | |
482 | .getsockopt = sock_common_getsockopt, /* ok */ | |
3516ffb0 | 483 | .sendmsg = tcp_sendmsg, /* ok */ |
543d9cfe ACM |
484 | .recvmsg = sock_common_recvmsg, /* ok */ |
485 | .mmap = sock_no_mmap, | |
486 | .sendpage = tcp_sendpage, | |
a0974dd3 | 487 | .splice_read = tcp_splice_read, |
3fdadf7d | 488 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
489 | .compat_setsockopt = compat_sock_common_setsockopt, |
490 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 491 | #endif |
1da177e4 LT |
492 | }; |
493 | ||
90ddc4f0 | 494 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
495 | .family = PF_INET6, |
496 | .owner = THIS_MODULE, | |
497 | .release = inet6_release, | |
498 | .bind = inet6_bind, | |
499 | .connect = inet_dgram_connect, /* ok */ | |
500 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
501 | .accept = sock_no_accept, /* a do nothing */ | |
502 | .getname = inet6_getname, | |
503 | .poll = udp_poll, /* ok */ | |
504 | .ioctl = inet6_ioctl, /* must change */ | |
505 | .listen = sock_no_listen, /* ok */ | |
506 | .shutdown = inet_shutdown, /* ok */ | |
507 | .setsockopt = sock_common_setsockopt, /* ok */ | |
508 | .getsockopt = sock_common_getsockopt, /* ok */ | |
509 | .sendmsg = inet_sendmsg, /* ok */ | |
510 | .recvmsg = sock_common_recvmsg, /* ok */ | |
511 | .mmap = sock_no_mmap, | |
512 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 513 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
514 | .compat_setsockopt = compat_sock_common_setsockopt, |
515 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 516 | #endif |
1da177e4 LT |
517 | }; |
518 | ||
519 | static struct net_proto_family inet6_family_ops = { | |
520 | .family = PF_INET6, | |
521 | .create = inet6_create, | |
522 | .owner = THIS_MODULE, | |
523 | }; | |
524 | ||
87c3efbf | 525 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
526 | { |
527 | struct list_head *lh; | |
528 | struct inet_protosw *answer; | |
1da177e4 | 529 | struct list_head *last_perm; |
87c3efbf DL |
530 | int protocol = p->protocol; |
531 | int ret; | |
1da177e4 LT |
532 | |
533 | spin_lock_bh(&inetsw6_lock); | |
534 | ||
87c3efbf | 535 | ret = -EINVAL; |
1da177e4 LT |
536 | if (p->type >= SOCK_MAX) |
537 | goto out_illegal; | |
538 | ||
539 | /* If we are trying to override a permanent protocol, bail. */ | |
540 | answer = NULL; | |
87c3efbf | 541 | ret = -EPERM; |
1da177e4 LT |
542 | last_perm = &inetsw6[p->type]; |
543 | list_for_each(lh, &inetsw6[p->type]) { | |
544 | answer = list_entry(lh, struct inet_protosw, list); | |
545 | ||
546 | /* Check only the non-wild match. */ | |
547 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
548 | if (protocol == answer->protocol) | |
549 | break; | |
550 | last_perm = lh; | |
551 | } | |
552 | ||
553 | answer = NULL; | |
554 | } | |
555 | if (answer) | |
556 | goto out_permanent; | |
557 | ||
558 | /* Add the new entry after the last permanent entry if any, so that | |
559 | * the new entry does not override a permanent entry when matched with | |
560 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 561 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
562 | * system automatically returns to the old behavior. |
563 | */ | |
564 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 565 | ret = 0; |
1da177e4 LT |
566 | out: |
567 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 568 | return ret; |
1da177e4 LT |
569 | |
570 | out_permanent: | |
571 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", | |
572 | protocol); | |
573 | goto out; | |
574 | ||
575 | out_illegal: | |
576 | printk(KERN_ERR | |
577 | "Ignoring attempt to register invalid socket type %d.\n", | |
578 | p->type); | |
579 | goto out; | |
580 | } | |
581 | ||
7159039a YH |
582 | EXPORT_SYMBOL(inet6_register_protosw); |
583 | ||
1da177e4 LT |
584 | void |
585 | inet6_unregister_protosw(struct inet_protosw *p) | |
586 | { | |
587 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
588 | printk(KERN_ERR | |
589 | "Attempt to unregister permanent protocol %d.\n", | |
590 | p->protocol); | |
591 | } else { | |
592 | spin_lock_bh(&inetsw6_lock); | |
593 | list_del_rcu(&p->list); | |
594 | spin_unlock_bh(&inetsw6_lock); | |
595 | ||
596 | synchronize_net(); | |
597 | } | |
598 | } | |
599 | ||
7159039a YH |
600 | EXPORT_SYMBOL(inet6_unregister_protosw); |
601 | ||
b9750ce1 ACM |
602 | int inet6_sk_rebuild_header(struct sock *sk) |
603 | { | |
604 | int err; | |
605 | struct dst_entry *dst; | |
606 | struct ipv6_pinfo *np = inet6_sk(sk); | |
607 | ||
608 | dst = __sk_dst_check(sk, np->dst_cookie); | |
609 | ||
610 | if (dst == NULL) { | |
611 | struct inet_sock *inet = inet_sk(sk); | |
612 | struct in6_addr *final_p = NULL, final; | |
613 | struct flowi fl; | |
614 | ||
615 | memset(&fl, 0, sizeof(fl)); | |
616 | fl.proto = sk->sk_protocol; | |
617 | ipv6_addr_copy(&fl.fl6_dst, &np->daddr); | |
618 | ipv6_addr_copy(&fl.fl6_src, &np->saddr); | |
619 | fl.fl6_flowlabel = np->flow_label; | |
620 | fl.oif = sk->sk_bound_dev_if; | |
621 | fl.fl_ip_dport = inet->dport; | |
622 | fl.fl_ip_sport = inet->sport; | |
beb8d13b | 623 | security_sk_classify_flow(sk, &fl); |
b9750ce1 ACM |
624 | |
625 | if (np->opt && np->opt->srcrt) { | |
626 | struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; | |
627 | ipv6_addr_copy(&final, &fl.fl6_dst); | |
628 | ipv6_addr_copy(&fl.fl6_dst, rt0->addr); | |
629 | final_p = &final; | |
630 | } | |
631 | ||
632 | err = ip6_dst_lookup(sk, &dst, &fl); | |
633 | if (err) { | |
634 | sk->sk_route_caps = 0; | |
635 | return err; | |
636 | } | |
637 | if (final_p) | |
638 | ipv6_addr_copy(&fl.fl6_dst, final_p); | |
639 | ||
52479b62 | 640 | if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0) { |
b9750ce1 ACM |
641 | sk->sk_err_soft = -err; |
642 | return err; | |
643 | } | |
644 | ||
8e1ef0a9 | 645 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
646 | } |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); | |
652 | ||
399c07de ACM |
653 | int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) |
654 | { | |
655 | struct ipv6_pinfo *np = inet6_sk(sk); | |
656 | struct inet6_skb_parm *opt = IP6CB(skb); | |
657 | ||
658 | if (np->rxopt.all) { | |
659 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
660 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
661 | ((IPV6_FLOWINFO_MASK & |
662 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
663 | np->rxopt.bits.rxflow) || |
664 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
665 | np->rxopt.bits.osrcrt)) || | |
666 | ((opt->dst1 || opt->dst0) && | |
667 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
668 | return 1; | |
669 | } | |
670 | return 0; | |
671 | } | |
672 | ||
673 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); | |
674 | ||
787e9208 | 675 | static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto) |
662397fd YH |
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 | ||
787e9208 | 706 | return proto; |
662397fd YH |
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(); | |
787e9208 HX |
723 | ops = rcu_dereference(inet6_protos[ |
724 | ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]); | |
725 | ||
662397fd YH |
726 | if (likely(ops && ops->gso_send_check)) { |
727 | skb_reset_transport_header(skb); | |
728 | err = ops->gso_send_check(skb); | |
729 | } | |
730 | rcu_read_unlock(); | |
731 | ||
732 | out: | |
733 | return err; | |
734 | } | |
735 | ||
736 | static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features) | |
737 | { | |
738 | struct sk_buff *segs = ERR_PTR(-EINVAL); | |
739 | struct ipv6hdr *ipv6h; | |
740 | struct inet6_protocol *ops; | |
741 | ||
742 | if (!(features & NETIF_F_V6_CSUM)) | |
743 | features &= ~NETIF_F_SG; | |
744 | ||
745 | if (unlikely(skb_shinfo(skb)->gso_type & | |
746 | ~(SKB_GSO_UDP | | |
747 | SKB_GSO_DODGY | | |
748 | SKB_GSO_TCP_ECN | | |
749 | SKB_GSO_TCPV6 | | |
750 | 0))) | |
751 | goto out; | |
752 | ||
753 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) | |
754 | goto out; | |
755 | ||
756 | ipv6h = ipv6_hdr(skb); | |
757 | __skb_pull(skb, sizeof(*ipv6h)); | |
758 | segs = ERR_PTR(-EPROTONOSUPPORT); | |
759 | ||
760 | rcu_read_lock(); | |
787e9208 HX |
761 | ops = rcu_dereference(inet6_protos[ |
762 | ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]); | |
763 | ||
662397fd YH |
764 | if (likely(ops && ops->gso_segment)) { |
765 | skb_reset_transport_header(skb); | |
766 | segs = ops->gso_segment(skb, features); | |
767 | } | |
768 | rcu_read_unlock(); | |
769 | ||
770 | if (unlikely(IS_ERR(segs))) | |
771 | goto out; | |
772 | ||
773 | for (skb = segs; skb; skb = skb->next) { | |
774 | ipv6h = ipv6_hdr(skb); | |
775 | ipv6h->payload_len = htons(skb->len - skb->mac_len - | |
776 | sizeof(*ipv6h)); | |
777 | } | |
778 | ||
779 | out: | |
780 | return segs; | |
781 | } | |
782 | ||
787e9208 HX |
783 | struct ipv6_gro_cb { |
784 | struct napi_gro_cb napi; | |
785 | int proto; | |
786 | }; | |
787 | ||
788 | #define IPV6_GRO_CB(skb) ((struct ipv6_gro_cb *)(skb)->cb) | |
789 | ||
790 | static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, | |
791 | struct sk_buff *skb) | |
792 | { | |
793 | struct inet6_protocol *ops; | |
794 | struct sk_buff **pp = NULL; | |
795 | struct sk_buff *p; | |
796 | struct ipv6hdr *iph; | |
797 | unsigned int nlen; | |
798 | int flush = 1; | |
799 | int proto; | |
ebad18e9 | 800 | __wsum csum; |
787e9208 HX |
801 | |
802 | if (unlikely(!pskb_may_pull(skb, sizeof(*iph)))) | |
803 | goto out; | |
804 | ||
805 | iph = ipv6_hdr(skb); | |
806 | __skb_pull(skb, sizeof(*iph)); | |
807 | ||
808 | flush += ntohs(iph->payload_len) != skb->len; | |
809 | ||
810 | rcu_read_lock(); | |
811 | proto = ipv6_gso_pull_exthdrs(skb, iph->nexthdr); | |
ebad18e9 | 812 | iph = ipv6_hdr(skb); |
787e9208 HX |
813 | IPV6_GRO_CB(skb)->proto = proto; |
814 | ops = rcu_dereference(inet6_protos[proto]); | |
815 | if (!ops || !ops->gro_receive) | |
816 | goto out_unlock; | |
817 | ||
818 | flush--; | |
819 | skb_reset_transport_header(skb); | |
820 | nlen = skb_network_header_len(skb); | |
821 | ||
822 | for (p = *head; p; p = p->next) { | |
823 | struct ipv6hdr *iph2; | |
824 | ||
825 | if (!NAPI_GRO_CB(p)->same_flow) | |
826 | continue; | |
827 | ||
828 | iph2 = ipv6_hdr(p); | |
829 | ||
830 | /* All fields must match except length. */ | |
831 | if (nlen != skb_network_header_len(p) || | |
832 | memcmp(iph, iph2, offsetof(struct ipv6hdr, payload_len)) || | |
833 | memcmp(&iph->nexthdr, &iph2->nexthdr, | |
834 | nlen - offsetof(struct ipv6hdr, nexthdr))) { | |
835 | NAPI_GRO_CB(p)->same_flow = 0; | |
836 | continue; | |
837 | } | |
838 | ||
839 | NAPI_GRO_CB(p)->flush |= flush; | |
840 | } | |
841 | ||
842 | NAPI_GRO_CB(skb)->flush |= flush; | |
843 | ||
ebad18e9 HX |
844 | csum = skb->csum; |
845 | skb_postpull_rcsum(skb, iph, skb_network_header_len(skb)); | |
846 | ||
787e9208 HX |
847 | pp = ops->gro_receive(head, skb); |
848 | ||
ebad18e9 HX |
849 | skb->csum = csum; |
850 | ||
787e9208 HX |
851 | out_unlock: |
852 | rcu_read_unlock(); | |
853 | ||
854 | out: | |
855 | NAPI_GRO_CB(skb)->flush |= flush; | |
856 | ||
857 | return pp; | |
858 | } | |
859 | ||
860 | static int ipv6_gro_complete(struct sk_buff *skb) | |
861 | { | |
862 | struct inet6_protocol *ops; | |
863 | struct ipv6hdr *iph = ipv6_hdr(skb); | |
864 | int err = -ENOSYS; | |
865 | ||
866 | iph->payload_len = htons(skb->len - skb_network_offset(skb) - | |
867 | sizeof(*iph)); | |
868 | ||
869 | rcu_read_lock(); | |
870 | ops = rcu_dereference(inet6_protos[IPV6_GRO_CB(skb)->proto]); | |
871 | if (WARN_ON(!ops || !ops->gro_complete)) | |
872 | goto out_unlock; | |
873 | ||
874 | err = ops->gro_complete(skb); | |
875 | ||
876 | out_unlock: | |
877 | rcu_read_unlock(); | |
878 | ||
879 | return err; | |
880 | } | |
881 | ||
662397fd YH |
882 | static struct packet_type ipv6_packet_type = { |
883 | .type = __constant_htons(ETH_P_IPV6), | |
884 | .func = ipv6_rcv, | |
885 | .gso_send_check = ipv6_gso_send_check, | |
886 | .gso_segment = ipv6_gso_segment, | |
787e9208 HX |
887 | .gro_receive = ipv6_gro_receive, |
888 | .gro_complete = ipv6_gro_complete, | |
662397fd YH |
889 | }; |
890 | ||
891 | static int __init ipv6_packet_init(void) | |
892 | { | |
893 | dev_add_pack(&ipv6_packet_type); | |
894 | return 0; | |
895 | } | |
896 | ||
897 | static void ipv6_packet_cleanup(void) | |
898 | { | |
899 | dev_remove_pack(&ipv6_packet_type); | |
900 | } | |
901 | ||
e43291cb DL |
902 | static int __net_init ipv6_init_mibs(struct net *net) |
903 | { | |
0c7ed677 DL |
904 | if (snmp_mib_init((void **)net->mib.udp_stats_in6, |
905 | sizeof (struct udp_mib)) < 0) | |
906 | return -ENOMEM; | |
be713a44 DL |
907 | if (snmp_mib_init((void **)net->mib.udplite_stats_in6, |
908 | sizeof (struct udp_mib)) < 0) | |
909 | goto err_udplite_mib; | |
9261e537 DL |
910 | if (snmp_mib_init((void **)net->mib.ipv6_statistics, |
911 | sizeof(struct ipstats_mib)) < 0) | |
912 | goto err_ip_mib; | |
913 | if (snmp_mib_init((void **)net->mib.icmpv6_statistics, | |
914 | sizeof(struct icmpv6_mib)) < 0) | |
915 | goto err_icmp_mib; | |
916 | if (snmp_mib_init((void **)net->mib.icmpv6msg_statistics, | |
917 | sizeof(struct icmpv6msg_mib)) < 0) | |
918 | goto err_icmpmsg_mib; | |
e43291cb | 919 | return 0; |
be713a44 | 920 | |
9261e537 DL |
921 | err_icmpmsg_mib: |
922 | snmp_mib_free((void **)net->mib.icmpv6_statistics); | |
923 | err_icmp_mib: | |
924 | snmp_mib_free((void **)net->mib.ipv6_statistics); | |
925 | err_ip_mib: | |
926 | snmp_mib_free((void **)net->mib.udplite_stats_in6); | |
be713a44 DL |
927 | err_udplite_mib: |
928 | snmp_mib_free((void **)net->mib.udp_stats_in6); | |
929 | return -ENOMEM; | |
e43291cb DL |
930 | } |
931 | ||
932 | static void __net_exit ipv6_cleanup_mibs(struct net *net) | |
933 | { | |
0c7ed677 | 934 | snmp_mib_free((void **)net->mib.udp_stats_in6); |
be713a44 | 935 | snmp_mib_free((void **)net->mib.udplite_stats_in6); |
9261e537 DL |
936 | snmp_mib_free((void **)net->mib.ipv6_statistics); |
937 | snmp_mib_free((void **)net->mib.icmpv6_statistics); | |
938 | snmp_mib_free((void **)net->mib.icmpv6msg_statistics); | |
e43291cb DL |
939 | } |
940 | ||
e7dc8494 | 941 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 942 | { |
0c96d8c5 DL |
943 | int err = 0; |
944 | ||
99bc9c4e | 945 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 946 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 947 | |
e43291cb DL |
948 | err = ipv6_init_mibs(net); |
949 | if (err) | |
950 | return err; | |
0c96d8c5 DL |
951 | #ifdef CONFIG_PROC_FS |
952 | err = udp6_proc_init(net); | |
953 | if (err) | |
954 | goto out; | |
6f8b13bc DL |
955 | err = tcp6_proc_init(net); |
956 | if (err) | |
957 | goto proc_tcp6_fail; | |
6ab57e7e DL |
958 | err = ac6_proc_init(net); |
959 | if (err) | |
960 | goto proc_ac6_fail; | |
0c96d8c5 DL |
961 | #endif |
962 | return err; | |
6f8b13bc DL |
963 | |
964 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
965 | proc_ac6_fail: |
966 | tcp6_proc_exit(net); | |
6f8b13bc DL |
967 | proc_tcp6_fail: |
968 | udp6_proc_exit(net); | |
e43291cb DL |
969 | out: |
970 | ipv6_cleanup_mibs(net); | |
971 | return err; | |
6f8b13bc | 972 | #endif |
81c1c178 DL |
973 | } |
974 | ||
975 | static void inet6_net_exit(struct net *net) | |
976 | { | |
0c96d8c5 DL |
977 | #ifdef CONFIG_PROC_FS |
978 | udp6_proc_exit(net); | |
6f8b13bc | 979 | tcp6_proc_exit(net); |
6ab57e7e | 980 | ac6_proc_exit(net); |
0c96d8c5 | 981 | #endif |
e43291cb | 982 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
983 | } |
984 | ||
985 | static struct pernet_operations inet6_net_ops = { | |
986 | .init = inet6_net_init, | |
987 | .exit = inet6_net_exit, | |
988 | }; | |
989 | ||
1da177e4 LT |
990 | static int __init inet6_init(void) |
991 | { | |
992 | struct sk_buff *dummy_skb; | |
1ab1457c | 993 | struct list_head *r; |
1da177e4 LT |
994 | int err; |
995 | ||
ef047f5e YH |
996 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); |
997 | ||
1da177e4 LT |
998 | err = proto_register(&tcpv6_prot, 1); |
999 | if (err) | |
1000 | goto out; | |
1001 | ||
1002 | err = proto_register(&udpv6_prot, 1); | |
1003 | if (err) | |
1004 | goto out_unregister_tcp_proto; | |
1005 | ||
ba4e58ec | 1006 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
1007 | if (err) |
1008 | goto out_unregister_udp_proto; | |
1009 | ||
ba4e58ec GR |
1010 | err = proto_register(&rawv6_prot, 1); |
1011 | if (err) | |
1012 | goto out_unregister_udplite_proto; | |
1013 | ||
1da177e4 LT |
1014 | |
1015 | /* Register the socket-side information for inet6_create. */ | |
1016 | for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) | |
1017 | INIT_LIST_HEAD(r); | |
1018 | ||
1019 | /* We MUST register RAW sockets before we create the ICMP6, | |
1020 | * IGMP6, or NDISC control sockets. | |
1021 | */ | |
7f4e4868 DL |
1022 | err = rawv6_init(); |
1023 | if (err) | |
1024 | goto out_unregister_raw_proto; | |
1da177e4 LT |
1025 | |
1026 | /* Register the family here so that the init calls below will | |
1027 | * be able to create sockets. (?? is this dangerous ??) | |
1028 | */ | |
8eb55910 DM |
1029 | err = sock_register(&inet6_family_ops); |
1030 | if (err) | |
7f4e4868 | 1031 | goto out_sock_register_fail; |
1da177e4 | 1032 | |
eeb61f71 AV |
1033 | #ifdef CONFIG_SYSCTL |
1034 | err = ipv6_static_sysctl_register(); | |
1035 | if (err) | |
1036 | goto static_sysctl_fail; | |
1037 | #endif | |
1da177e4 LT |
1038 | /* |
1039 | * ipngwg API draft makes clear that the correct semantics | |
1040 | * for TCP and UDP is to consider one TCP and UDP instance | |
1041 | * in a host availiable by both INET and INET6 APIs and | |
1042 | * able to communicate via both network protocols. | |
1043 | */ | |
1044 | ||
81c1c178 DL |
1045 | err = register_pernet_subsys(&inet6_net_ops); |
1046 | if (err) | |
1047 | goto register_pernet_fail; | |
9b0f976f | 1048 | err = icmpv6_init(); |
1da177e4 LT |
1049 | if (err) |
1050 | goto icmp_fail; | |
623d1a1a WC |
1051 | err = ip6_mr_init(); |
1052 | if (err) | |
1053 | goto ipmr_fail; | |
9b0f976f | 1054 | err = ndisc_init(); |
1da177e4 LT |
1055 | if (err) |
1056 | goto ndisc_fail; | |
9b0f976f | 1057 | err = igmp6_init(); |
1da177e4 LT |
1058 | if (err) |
1059 | goto igmp_fail; | |
2cc7d573 HW |
1060 | err = ipv6_netfilter_init(); |
1061 | if (err) | |
1062 | goto netfilter_fail; | |
1da177e4 LT |
1063 | /* Create /proc/foo6 entries. */ |
1064 | #ifdef CONFIG_PROC_FS | |
1065 | err = -ENOMEM; | |
1066 | if (raw6_proc_init()) | |
1067 | goto proc_raw6_fail; | |
ba4e58ec GR |
1068 | if (udplite6_proc_init()) |
1069 | goto proc_udplite6_fail; | |
1da177e4 LT |
1070 | if (ipv6_misc_proc_init()) |
1071 | goto proc_misc6_fail; | |
1da177e4 LT |
1072 | if (if6_proc_init()) |
1073 | goto proc_if6_fail; | |
1074 | #endif | |
e2fddf5e DL |
1075 | err = ip6_route_init(); |
1076 | if (err) | |
1077 | goto ip6_route_fail; | |
0a3e78ac DL |
1078 | err = ip6_flowlabel_init(); |
1079 | if (err) | |
1080 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
1081 | err = addrconf_init(); |
1082 | if (err) | |
1083 | goto addrconf_fail; | |
1da177e4 LT |
1084 | |
1085 | /* Init v6 extension headers. */ | |
248b238d DL |
1086 | err = ipv6_exthdrs_init(); |
1087 | if (err) | |
1088 | goto ipv6_exthdrs_fail; | |
1089 | ||
853cbbaa DL |
1090 | err = ipv6_frag_init(); |
1091 | if (err) | |
1092 | goto ipv6_frag_fail; | |
1da177e4 LT |
1093 | |
1094 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
1095 | err = udpv6_init(); |
1096 | if (err) | |
1097 | goto udpv6_fail; | |
e2ed4052 | 1098 | |
7f4e4868 DL |
1099 | err = udplitev6_init(); |
1100 | if (err) | |
1101 | goto udplitev6_fail; | |
1102 | ||
1103 | err = tcpv6_init(); | |
1104 | if (err) | |
1105 | goto tcpv6_fail; | |
1106 | ||
1107 | err = ipv6_packet_init(); | |
1108 | if (err) | |
1109 | goto ipv6_packet_fail; | |
94911fe3 BT |
1110 | |
1111 | #ifdef CONFIG_SYSCTL | |
1112 | err = ipv6_sysctl_register(); | |
1113 | if (err) | |
1114 | goto sysctl_fail; | |
1115 | #endif | |
1da177e4 LT |
1116 | out: |
1117 | return err; | |
1118 | ||
94911fe3 BT |
1119 | #ifdef CONFIG_SYSCTL |
1120 | sysctl_fail: | |
1121 | ipv6_packet_cleanup(); | |
1122 | #endif | |
7f4e4868 DL |
1123 | ipv6_packet_fail: |
1124 | tcpv6_exit(); | |
1125 | tcpv6_fail: | |
1126 | udplitev6_exit(); | |
1127 | udplitev6_fail: | |
1128 | udpv6_exit(); | |
1129 | udpv6_fail: | |
1130 | ipv6_frag_exit(); | |
853cbbaa DL |
1131 | ipv6_frag_fail: |
1132 | ipv6_exthdrs_exit(); | |
248b238d DL |
1133 | ipv6_exthdrs_fail: |
1134 | addrconf_cleanup(); | |
1da177e4 LT |
1135 | addrconf_fail: |
1136 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1137 | ip6_flowlabel_fail: |
1da177e4 | 1138 | ip6_route_cleanup(); |
e2fddf5e | 1139 | ip6_route_fail: |
1da177e4 LT |
1140 | #ifdef CONFIG_PROC_FS |
1141 | if6_proc_exit(); | |
1142 | proc_if6_fail: | |
1da177e4 LT |
1143 | ipv6_misc_proc_exit(); |
1144 | proc_misc6_fail: | |
ba4e58ec GR |
1145 | udplite6_proc_exit(); |
1146 | proc_udplite6_fail: | |
1da177e4 LT |
1147 | raw6_proc_exit(); |
1148 | proc_raw6_fail: | |
1149 | #endif | |
2cc7d573 HW |
1150 | ipv6_netfilter_fini(); |
1151 | netfilter_fail: | |
1da177e4 LT |
1152 | igmp6_cleanup(); |
1153 | igmp_fail: | |
1154 | ndisc_cleanup(); | |
1155 | ndisc_fail: | |
623d1a1a WC |
1156 | ip6_mr_cleanup(); |
1157 | ipmr_fail: | |
1da177e4 LT |
1158 | icmpv6_cleanup(); |
1159 | icmp_fail: | |
81c1c178 DL |
1160 | unregister_pernet_subsys(&inet6_net_ops); |
1161 | register_pernet_fail: | |
eeb61f71 AV |
1162 | #ifdef CONFIG_SYSCTL |
1163 | ipv6_static_sysctl_unregister(); | |
1164 | static_sysctl_fail: | |
1165 | #endif | |
8eb55910 | 1166 | sock_unregister(PF_INET6); |
e2fddf5e | 1167 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1168 | out_sock_register_fail: |
1169 | rawv6_exit(); | |
1da177e4 LT |
1170 | out_unregister_raw_proto: |
1171 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1172 | out_unregister_udplite_proto: |
1173 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1174 | out_unregister_udp_proto: |
1175 | proto_unregister(&udpv6_prot); | |
1176 | out_unregister_tcp_proto: | |
1177 | proto_unregister(&tcpv6_prot); | |
1178 | goto out; | |
1179 | } | |
1180 | module_init(inet6_init); | |
1181 | ||
1182 | static void __exit inet6_exit(void) | |
1183 | { | |
1184 | /* First of all disallow new sockets creation. */ | |
1185 | sock_unregister(PF_INET6); | |
c127ea2c TG |
1186 | /* Disallow any further netlink messages */ |
1187 | rtnl_unregister_all(PF_INET6); | |
ca17c233 | 1188 | |
94911fe3 BT |
1189 | #ifdef CONFIG_SYSCTL |
1190 | ipv6_sysctl_unregister(); | |
1191 | #endif | |
7f4e4868 DL |
1192 | udpv6_exit(); |
1193 | udplitev6_exit(); | |
1194 | tcpv6_exit(); | |
1195 | ||
ca17c233 JJ |
1196 | /* Cleanup code parts. */ |
1197 | ipv6_packet_cleanup(); | |
853cbbaa | 1198 | ipv6_frag_exit(); |
248b238d | 1199 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1200 | addrconf_cleanup(); |
1201 | ip6_flowlabel_cleanup(); | |
1202 | ip6_route_cleanup(); | |
1da177e4 | 1203 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1204 | |
1205 | /* Cleanup code parts. */ | |
1da177e4 | 1206 | if6_proc_exit(); |
1ab1457c | 1207 | ipv6_misc_proc_exit(); |
1ab1457c | 1208 | udplite6_proc_exit(); |
1ab1457c | 1209 | raw6_proc_exit(); |
2c8d7ca0 | 1210 | #endif |
2cc7d573 | 1211 | ipv6_netfilter_fini(); |
ca17c233 | 1212 | igmp6_cleanup(); |
1da177e4 | 1213 | ndisc_cleanup(); |
623d1a1a | 1214 | ip6_mr_cleanup(); |
1da177e4 | 1215 | icmpv6_cleanup(); |
7f4e4868 | 1216 | rawv6_exit(); |
94911fe3 | 1217 | |
81c1c178 | 1218 | unregister_pernet_subsys(&inet6_net_ops); |
eeb61f71 AV |
1219 | #ifdef CONFIG_SYSCTL |
1220 | ipv6_static_sysctl_unregister(); | |
1221 | #endif | |
1da177e4 | 1222 | proto_unregister(&rawv6_prot); |
ca17c233 | 1223 | proto_unregister(&udplitev6_prot); |
1da177e4 LT |
1224 | proto_unregister(&udpv6_prot); |
1225 | proto_unregister(&tcpv6_prot); | |
1226 | } | |
1227 | module_exit(inet6_exit); | |
1228 | ||
1229 | MODULE_ALIAS_NETPROTO(PF_INET6); |