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fs: fix do_mount_root() false positive kmemcheck warning
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / ipv6 / af_inet6.c
CommitLineData
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
65MODULE_AUTHOR("Cast of dozens");
66MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
67MODULE_LICENSE("GPL");
68
f1267347 69/* The inetsw6 table contains everything that inet6_create needs to
1da177e4
LT		 70 * build a new socket.
71 */
72static struct list_head inetsw6[SOCK_MAX];
73static DEFINE_SPINLOCK(inetsw6_lock);
74
fe7ca2e1
BH		 75static int disable_ipv6 = 0;
76module_param_named(disable, disable_ipv6, int, 0);
77MODULE_PARM_DESC(disable, "Disable IPv6 such that it is non-functional");
78
1da177e4
LT		 79static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
80{
81 const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
82
83 return (struct ipv6_pinfo *)(((u8 *)sk) + offset);
84}
85
1b8d7ae4 86static int inet6_create(struct net *net, struct socket *sock, int protocol)
1da177e4
LT		 87{
88 struct inet_sock *inet;
89 struct ipv6_pinfo *np;
90 struct sock *sk;
1da177e4
LT		 91 struct inet_protosw *answer;
92 struct proto *answer_prot;
93 unsigned char answer_flags;
94 char answer_no_check;
af1afe86
YH		 95 int try_loading_module = 0;
96 int err;
1da177e4 97
b3da2cf3
DM		 98 if (sock->type != SOCK_RAW &&
99 sock->type != SOCK_DGRAM &&
100 !inet_ehash_secret)
101 build_ehash_secret();
102
1da177e4 103 /* Look for the requested type/protocol pair. */
af1afe86
YH		 104lookup_protocol:
105 err = -ESOCKTNOSUPPORT;
1da177e4 106 rcu_read_lock();
696adfe8 107 list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) {
1da177e4 108
696adfe8 109 err = 0;
1da177e4
LT		 110 /* Check the non-wild match. */
111 if (protocol == answer->protocol) {
112 if (protocol != IPPROTO_IP)
113 break;
114 } else {
115 /* Check for the two wild cases. */
116 if (IPPROTO_IP == protocol) {
117 protocol = answer->protocol;
118 break;
119 }
120 if (IPPROTO_IP == answer->protocol)
121 break;
122 }
af1afe86 123 err = -EPROTONOSUPPORT;
1da177e4
LT		 124 }
125
696adfe8 126 if (err) {
af1afe86
YH		 127 if (try_loading_module < 2) {
128 rcu_read_unlock();
129 /*
130 * Be more specific, e.g. net-pf-10-proto-132-type-1
131 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
132 */
133 if (++try_loading_module == 1)
134 request_module("net-pf-%d-proto-%d-type-%d",
135 PF_INET6, protocol, sock->type);
136 /*
137 * Fall back to generic, e.g. net-pf-10-proto-132
138 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
139 */
140 else
141 request_module("net-pf-%d-proto-%d",
142 PF_INET6, protocol);
143 goto lookup_protocol;
144 } else
145 goto out_rcu_unlock;
146 }
147
148 err = -EPERM;
1da177e4
LT		 149 if (answer->capability > 0 && !capable(answer->capability))
150 goto out_rcu_unlock;
1da177e4
LT		 151
152 sock->ops = answer->ops;
1da177e4
LT		 153 answer_prot = answer->prot;
154 answer_no_check = answer->no_check;
155 answer_flags = answer->flags;
156 rcu_read_unlock();
157
547b792c 158 WARN_ON(answer_prot->slab == NULL);
1da177e4 159
af1afe86 160 err = -ENOBUFS;
6257ff21 161 sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot);
1da177e4
LT		 162 if (sk == NULL)
163 goto out;
164
165 sock_init_data(sock, sk);
166
af1afe86 167 err = 0;
1da177e4
LT		 168 sk->sk_no_check = answer_no_check;
169 if (INET_PROTOSW_REUSE & answer_flags)
170 sk->sk_reuse = 1;
171
172 inet = inet_sk(sk);
469de9b9 173 inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
1da177e4
LT		 174
175 if (SOCK_RAW == sock->type) {
176 inet->num = protocol;
177 if (IPPROTO_RAW == protocol)
178 inet->hdrincl = 1;
179 }
180
e6848976 181 sk->sk_destruct = inet_sock_destruct;
1da177e4
LT		 182 sk->sk_family = PF_INET6;
183 sk->sk_protocol = protocol;
184
185 sk->sk_backlog_rcv = answer->prot->backlog_rcv;
186
187 inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk);
188 np->hop_limit = -1;
189 np->mcast_hops = -1;
190 np->mc_loop = 1;
191 np->pmtudisc = IPV6_PMTUDISC_WANT;
2e761e05 192 np->ipv6only = net->ipv6.sysctl.bindv6only;
1ab1457c 193
1da177e4
LT		 194 /* Init the ipv4 part of the socket since we can have sockets
195 * using v6 API for ipv4.
196 */
197 inet->uc_ttl = -1;
198
199 inet->mc_loop = 1;
200 inet->mc_ttl = 1;
201 inet->mc_index = 0;
202 inet->mc_list = NULL;
203
204 if (ipv4_config.no_pmtu_disc)
205 inet->pmtudisc = IP_PMTUDISC_DONT;
206 else
207 inet->pmtudisc = IP_PMTUDISC_WANT;
1ab1457c 208 /*
e6848976
ACM		 209 * Increment only the relevant sk_prot->socks debug field, this changes
210 * the previous behaviour of incrementing both the equivalent to
211 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
212 *
213 * This allows better debug granularity as we'll know exactly how many
214 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
215 * transport protocol socks. -acme
216 */
217 sk_refcnt_debug_inc(sk);
1da177e4 218
1da177e4
LT		 219 if (inet->num) {
220 /* It assumes that any protocol which allows
221 * the user to assign a number at socket
222 * creation time automatically shares.
223 */
e69a4adc 224 inet->sport = htons(inet->num);
1da177e4
LT		 225 sk->sk_prot->hash(sk);
226 }
227 if (sk->sk_prot->init) {
af1afe86
YH		 228 err = sk->sk_prot->init(sk);
229 if (err) {
1da177e4
LT		 230 sk_common_release(sk);
231 goto out;
232 }
233 }
234out:
af1afe86 235 return err;
1da177e4
LT		 236out_rcu_unlock:
237 rcu_read_unlock();
238 goto out;
239}
240
241
242/* bind for INET6 API */
243int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
244{
245 struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr;
246 struct sock *sk = sock->sk;
247 struct inet_sock *inet = inet_sk(sk);
248 struct ipv6_pinfo *np = inet6_sk(sk);
3b1e0a65 249 struct net *net = sock_net(sk);
fd683222 250 __be32 v4addr = 0;
1da177e4
LT		 251 unsigned short snum;
252 int addr_type = 0;
253 int err = 0;
254
255 /* If the socket has its own bind function then use it. */
256 if (sk->sk_prot->bind)
257 return sk->sk_prot->bind(sk, uaddr, addr_len);
258
259 if (addr_len < SIN6_LEN_RFC2133)
260 return -EINVAL;
261 addr_type = ipv6_addr_type(&addr->sin6_addr);
262 if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
263 return -EINVAL;
264
265 snum = ntohs(addr->sin6_port);
266 if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
267 return -EACCES;
268
269 lock_sock(sk);
270
271 /* Check these errors (active socket, double bind). */
272 if (sk->sk_state != TCP_CLOSE || inet->num) {
273 err = -EINVAL;
274 goto out;
275 }
276
277 /* Check if the address belongs to the host. */
278 if (addr_type == IPV6_ADDR_MAPPED) {
63d9950b
VY		 279 int chk_addr_ret;
280
783ed5a7
VY		 281 /* Binding to v4-mapped address on a v6-only socket
282 * makes no sense
283 */
284 if (np->ipv6only) {
285 err = -EINVAL;
286 goto out;
287 }
63d9950b
VY		 288
289 /* Reproduce AF_INET checks to make the bindings consitant */
1da177e4 290 v4addr = addr->sin6_addr.s6_addr32[3];
63d9950b
VY		 291 chk_addr_ret = inet_addr_type(net, v4addr);
292 if (!sysctl_ip_nonlocal_bind &&
293 !(inet->freebind || inet->transparent) &&
294 v4addr != htonl(INADDR_ANY) &&
295 chk_addr_ret != RTN_LOCAL &&
296 chk_addr_ret != RTN_MULTICAST &&
297 chk_addr_ret != RTN_BROADCAST)
1da177e4 298 goto out;
1da177e4
LT		 299 } else {
300 if (addr_type != IPV6_ADDR_ANY) {
301 struct net_device *dev = NULL;
302
303 if (addr_type & IPV6_ADDR_LINKLOCAL) {
304 if (addr_len >= sizeof(struct sockaddr_in6) &&
305 addr->sin6_scope_id) {
306 /* Override any existing binding, if another one
307 * is supplied by user.
308 */
309 sk->sk_bound_dev_if = addr->sin6_scope_id;
310 }
1ab1457c 311
1da177e4
LT		 312 /* Binding to link-local address requires an interface */
313 if (!sk->sk_bound_dev_if) {
314 err = -EINVAL;
315 goto out;
316 }
075de939 317 dev = dev_get_by_index(net, sk->sk_bound_dev_if);
1da177e4
LT		 318 if (!dev) {
319 err = -ENODEV;
320 goto out;
321 }
322 }
323
324 /* ipv4 addr of the socket is invalid. Only the
325 * unspecified and mapped address have a v4 equivalent.
326 */
327 v4addr = LOOPBACK4_IPV6;
328 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
075de939 329 if (!ipv6_chk_addr(net, &addr->sin6_addr,
bfeade08 330 dev, 0)) {
1da177e4
LT		 331 if (dev)
332 dev_put(dev);
333 err = -EADDRNOTAVAIL;
334 goto out;
335 }
336 }
337 if (dev)
338 dev_put(dev);
339 }
340 }
341
342 inet->rcv_saddr = v4addr;
343 inet->saddr = v4addr;
344
345 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
1ab1457c 346
1da177e4
LT		 347 if (!(addr_type & IPV6_ADDR_MULTICAST))
348 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
349
350 /* Make sure we are allowed to bind here. */
351 if (sk->sk_prot->get_port(sk, snum)) {
352 inet_reset_saddr(sk);
353 err = -EADDRINUSE;
354 goto out;
355 }
356
0f8d3c7a 357 if (addr_type != IPV6_ADDR_ANY) {
1da177e4 358 sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
0f8d3c7a
VY		 359 if (addr_type != IPV6_ADDR_MAPPED)
360 np->ipv6only = 1;
361 }
1da177e4
LT		 362 if (snum)
363 sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
e69a4adc 364 inet->sport = htons(inet->num);
1da177e4
LT		 365 inet->dport = 0;
366 inet->daddr = 0;
367out:
368 release_sock(sk);
369 return err;
370}
371
7159039a
YH		 372EXPORT_SYMBOL(inet6_bind);
373
1da177e4
LT		 374int inet6_release(struct socket *sock)
375{
376 struct sock *sk = sock->sk;
377
378 if (sk == NULL)
379 return -EINVAL;
380
381 /* Free mc lists */
382 ipv6_sock_mc_close(sk);
383
384 /* Free ac lists */
385 ipv6_sock_ac_close(sk);
386
387 return inet_release(sock);
388}
389
7159039a
YH		 390EXPORT_SYMBOL(inet6_release);
391
7d06b2e0 392void inet6_destroy_sock(struct sock *sk)
1da177e4
LT		 393{
394 struct ipv6_pinfo *np = inet6_sk(sk);
395 struct sk_buff *skb;
396 struct ipv6_txoptions *opt;
397
1da177e4
LT		 398 /* Release rx options */
399
400 if ((skb = xchg(&np->pktoptions, NULL)) != NULL)
401 kfree_skb(skb);
402
403 /* Free flowlabels */
404 fl6_free_socklist(sk);
405
406 /* Free tx options */
407
408 if ((opt = xchg(&np->opt, NULL)) != NULL)
409 sock_kfree_s(sk, opt, opt->tot_len);
1da177e4
LT		 410}
411
3cf3dc6c
ACM		 412EXPORT_SYMBOL_GPL(inet6_destroy_sock);
413
1da177e4
LT		 414/*
415 * This does both peername and sockname.
416 */
1ab1457c 417
1da177e4
LT		 418int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
419 int *uaddr_len, int peer)
420{
421 struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr;
422 struct sock *sk = sock->sk;
423 struct inet_sock *inet = inet_sk(sk);
424 struct ipv6_pinfo *np = inet6_sk(sk);
1ab1457c 425
1da177e4
LT		 426 sin->sin6_family = AF_INET6;
427 sin->sin6_flowinfo = 0;
428 sin->sin6_scope_id = 0;
429 if (peer) {
430 if (!inet->dport)
431 return -ENOTCONN;
432 if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
433 peer == 1)
434 return -ENOTCONN;
435 sin->sin6_port = inet->dport;
436 ipv6_addr_copy(&sin->sin6_addr, &np->daddr);
437 if (np->sndflow)
438 sin->sin6_flowinfo = np->flow_label;
439 } else {
440 if (ipv6_addr_any(&np->rcv_saddr))
441 ipv6_addr_copy(&sin->sin6_addr, &np->saddr);
442 else
443 ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr);
444
445 sin->sin6_port = inet->sport;
446 }
447 if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
448 sin->sin6_scope_id = sk->sk_bound_dev_if;
449 *uaddr_len = sizeof(*sin);
450 return(0);
451}
452
7159039a
YH		 453EXPORT_SYMBOL(inet6_getname);
454
1da177e4
LT		 455int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
456{
457 struct sock *sk = sock->sk;
3b1e0a65 458 struct net *net = sock_net(sk);
1da177e4 459
1ab1457c 460 switch(cmd)
1da177e4
LT		 461 {
462 case SIOCGSTAMP:
463 return sock_get_timestamp(sk, (struct timeval __user *)arg);
464
ae40eb1e
ED		 465 case SIOCGSTAMPNS:
466 return sock_get_timestampns(sk, (struct timespec __user *)arg);
467
1da177e4
LT		 468 case SIOCADDRT:
469 case SIOCDELRT:
1ab1457c 470
5578689a 471 return(ipv6_route_ioctl(net, cmd, (void __user *)arg));
1da177e4
LT		 472
473 case SIOCSIFADDR:
af284937 474 return addrconf_add_ifaddr(net, (void __user *) arg);
1da177e4 475 case SIOCDIFADDR:
af284937 476 return addrconf_del_ifaddr(net, (void __user *) arg);
1da177e4 477 case SIOCSIFDSTADDR:
af284937 478 return addrconf_set_dstaddr(net, (void __user *) arg);
1da177e4 479 default:
b5e5fa5e
CH		 480 if (!sk->sk_prot->ioctl)
481 return -ENOIOCTLCMD;
482 return sk->sk_prot->ioctl(sk, cmd, arg);
1da177e4
LT		 483 }
484 /*NOTREACHED*/
485 return(0);
486}
487
7159039a
YH		 488EXPORT_SYMBOL(inet6_ioctl);
489
90ddc4f0 490const struct proto_ops inet6_stream_ops = {
543d9cfe
ACM		 491 .family = PF_INET6,
492 .owner = THIS_MODULE,
493 .release = inet6_release,
494 .bind = inet6_bind,
495 .connect = inet_stream_connect, /* ok */
496 .socketpair = sock_no_socketpair, /* a do nothing */
497 .accept = inet_accept, /* ok */
498 .getname = inet6_getname,
499 .poll = tcp_poll, /* ok */
500 .ioctl = inet6_ioctl, /* must change */
501 .listen = inet_listen, /* ok */
502 .shutdown = inet_shutdown, /* ok */
503 .setsockopt = sock_common_setsockopt, /* ok */
504 .getsockopt = sock_common_getsockopt, /* ok */
3516ffb0 505 .sendmsg = tcp_sendmsg, /* ok */
543d9cfe
ACM		 506 .recvmsg = sock_common_recvmsg, /* ok */
507 .mmap = sock_no_mmap,
508 .sendpage = tcp_sendpage,
a0974dd3 509 .splice_read = tcp_splice_read,
3fdadf7d 510#ifdef CONFIG_COMPAT
543d9cfe
ACM		 511 .compat_setsockopt = compat_sock_common_setsockopt,
512 .compat_getsockopt = compat_sock_common_getsockopt,
3fdadf7d 513#endif
1da177e4
LT		 514};
515
90ddc4f0 516const struct proto_ops inet6_dgram_ops = {
543d9cfe
ACM		 517 .family = PF_INET6,
518 .owner = THIS_MODULE,
519 .release = inet6_release,
520 .bind = inet6_bind,
521 .connect = inet_dgram_connect, /* ok */
522 .socketpair = sock_no_socketpair, /* a do nothing */
523 .accept = sock_no_accept, /* a do nothing */
524 .getname = inet6_getname,
525 .poll = udp_poll, /* ok */
526 .ioctl = inet6_ioctl, /* must change */
527 .listen = sock_no_listen, /* ok */
528 .shutdown = inet_shutdown, /* ok */
529 .setsockopt = sock_common_setsockopt, /* ok */
530 .getsockopt = sock_common_getsockopt, /* ok */
531 .sendmsg = inet_sendmsg, /* ok */
532 .recvmsg = sock_common_recvmsg, /* ok */
533 .mmap = sock_no_mmap,
534 .sendpage = sock_no_sendpage,
3fdadf7d 535#ifdef CONFIG_COMPAT
543d9cfe
ACM		 536 .compat_setsockopt = compat_sock_common_setsockopt,
537 .compat_getsockopt = compat_sock_common_getsockopt,
3fdadf7d 538#endif
1da177e4
LT		 539};
540
541static struct net_proto_family inet6_family_ops = {
542 .family = PF_INET6,
543 .create = inet6_create,
544 .owner = THIS_MODULE,
545};
546
87c3efbf 547int inet6_register_protosw(struct inet_protosw *p)
1da177e4
LT		 548{
549 struct list_head *lh;
550 struct inet_protosw *answer;
1da177e4 551 struct list_head *last_perm;
87c3efbf
DL		 552 int protocol = p->protocol;
553 int ret;
1da177e4
LT		 554
555 spin_lock_bh(&inetsw6_lock);
556
87c3efbf 557 ret = -EINVAL;
1da177e4
LT		 558 if (p->type >= SOCK_MAX)
559 goto out_illegal;
560
561 /* If we are trying to override a permanent protocol, bail. */
562 answer = NULL;
87c3efbf 563 ret = -EPERM;
1da177e4
LT		 564 last_perm = &inetsw6[p->type];
565 list_for_each(lh, &inetsw6[p->type]) {
566 answer = list_entry(lh, struct inet_protosw, list);
567
568 /* Check only the non-wild match. */
569 if (INET_PROTOSW_PERMANENT & answer->flags) {
570 if (protocol == answer->protocol)
571 break;
572 last_perm = lh;
573 }
574
575 answer = NULL;
576 }
577 if (answer)
578 goto out_permanent;
579
580 /* Add the new entry after the last permanent entry if any, so that
581 * the new entry does not override a permanent entry when matched with
582 * a wild-card protocol. But it is allowed to override any existing
1ab1457c 583 * non-permanent entry. This means that when we remove this entry, the
1da177e4
LT		 584 * system automatically returns to the old behavior.
585 */
586 list_add_rcu(&p->list, last_perm);
87c3efbf 587 ret = 0;
1da177e4
LT		 588out:
589 spin_unlock_bh(&inetsw6_lock);
87c3efbf 590 return ret;
1da177e4
LT		 591
592out_permanent:
593 printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
594 protocol);
595 goto out;
596
597out_illegal:
598 printk(KERN_ERR
599 "Ignoring attempt to register invalid socket type %d.\n",
600 p->type);
601 goto out;
602}
603
7159039a
YH		 604EXPORT_SYMBOL(inet6_register_protosw);
605
1da177e4
LT		 606void
607inet6_unregister_protosw(struct inet_protosw *p)
608{
609 if (INET_PROTOSW_PERMANENT & p->flags) {
610 printk(KERN_ERR
611 "Attempt to unregister permanent protocol %d.\n",
612 p->protocol);
613 } else {
614 spin_lock_bh(&inetsw6_lock);
615 list_del_rcu(&p->list);
616 spin_unlock_bh(&inetsw6_lock);
617
618 synchronize_net();
619 }
620}
621
7159039a
YH		 622EXPORT_SYMBOL(inet6_unregister_protosw);
623
b9750ce1
ACM		 624int inet6_sk_rebuild_header(struct sock *sk)
625{
626 int err;
627 struct dst_entry *dst;
628 struct ipv6_pinfo *np = inet6_sk(sk);
629
630 dst = __sk_dst_check(sk, np->dst_cookie);
631
632 if (dst == NULL) {
633 struct inet_sock *inet = inet_sk(sk);
634 struct in6_addr *final_p = NULL, final;
635 struct flowi fl;
636
637 memset(&fl, 0, sizeof(fl));
638 fl.proto = sk->sk_protocol;
639 ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
640 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
641 fl.fl6_flowlabel = np->flow_label;
642 fl.oif = sk->sk_bound_dev_if;
643 fl.fl_ip_dport = inet->dport;
644 fl.fl_ip_sport = inet->sport;
beb8d13b 645 security_sk_classify_flow(sk, &fl);
b9750ce1
ACM		 646
647 if (np->opt && np->opt->srcrt) {
648 struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
649 ipv6_addr_copy(&final, &fl.fl6_dst);
650 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
651 final_p = &final;
652 }
653
654 err = ip6_dst_lookup(sk, &dst, &fl);
655 if (err) {
656 sk->sk_route_caps = 0;
657 return err;
658 }
659 if (final_p)
660 ipv6_addr_copy(&fl.fl6_dst, final_p);
661
52479b62 662 if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0) {
b9750ce1
ACM		 663 sk->sk_err_soft = -err;
664 return err;
665 }
666
8e1ef0a9 667 __ip6_dst_store(sk, dst, NULL, NULL);
b9750ce1
ACM		 668 }
669
670 return 0;
671}
672
673EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
674
399c07de
ACM		 675int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
676{
677 struct ipv6_pinfo *np = inet6_sk(sk);
678 struct inet6_skb_parm *opt = IP6CB(skb);
679
680 if (np->rxopt.all) {
681 if ((opt->hop && (np->rxopt.bits.hopopts ||
682 np->rxopt.bits.ohopopts)) ||
d56f90a7
ACM		 683 ((IPV6_FLOWINFO_MASK &
684 *(__be32 *)skb_network_header(skb)) &&
399c07de
ACM		 685 np->rxopt.bits.rxflow) ||
686 (opt->srcrt && (np->rxopt.bits.srcrt ||
687 np->rxopt.bits.osrcrt)) ||
688 ((opt->dst1 || opt->dst0) &&
689 (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
690 return 1;
691 }
692 return 0;
693}
694
695EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
696
787e9208 697static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto)
662397fd
YH		 698{
699 struct inet6_protocol *ops = NULL;
700
701 for (;;) {
702 struct ipv6_opt_hdr *opth;
703 int len;
704
705 if (proto != NEXTHDR_HOP) {
706 ops = rcu_dereference(inet6_protos[proto]);
707
708 if (unlikely(!ops))
709 break;
710
711 if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
712 break;
713 }
714
715 if (unlikely(!pskb_may_pull(skb, 8)))
716 break;
717
718 opth = (void *)skb->data;
719 len = ipv6_optlen(opth);
720
721 if (unlikely(!pskb_may_pull(skb, len)))
722 break;
723
724 proto = opth->nexthdr;
725 __skb_pull(skb, len);
726 }
727
787e9208 728 return proto;
662397fd
YH		 729}
730
731static int ipv6_gso_send_check(struct sk_buff *skb)
732{
733 struct ipv6hdr *ipv6h;
734 struct inet6_protocol *ops;
735 int err = -EINVAL;
736
737 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
738 goto out;
739
740 ipv6h = ipv6_hdr(skb);
741 __skb_pull(skb, sizeof(*ipv6h));
742 err = -EPROTONOSUPPORT;
743
744 rcu_read_lock();
787e9208
HX		 745 ops = rcu_dereference(inet6_protos[
746 ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]);
747
662397fd
YH		 748 if (likely(ops && ops->gso_send_check)) {
749 skb_reset_transport_header(skb);
750 err = ops->gso_send_check(skb);
751 }
752 rcu_read_unlock();
753
754out:
755 return err;
756}
757
758static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
759{
760 struct sk_buff *segs = ERR_PTR(-EINVAL);
761 struct ipv6hdr *ipv6h;
762 struct inet6_protocol *ops;
763
764 if (!(features & NETIF_F_V6_CSUM))
765 features &= ~NETIF_F_SG;
766
767 if (unlikely(skb_shinfo(skb)->gso_type &
768 ~(SKB_GSO_UDP |
769 SKB_GSO_DODGY |
770 SKB_GSO_TCP_ECN |
771 SKB_GSO_TCPV6 |
772 0)))
773 goto out;
774
775 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
776 goto out;
777
778 ipv6h = ipv6_hdr(skb);
779 __skb_pull(skb, sizeof(*ipv6h));
780 segs = ERR_PTR(-EPROTONOSUPPORT);
781
782 rcu_read_lock();
787e9208
HX		 783 ops = rcu_dereference(inet6_protos[
784 ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]);
785
662397fd
YH		 786 if (likely(ops && ops->gso_segment)) {
787 skb_reset_transport_header(skb);
788 segs = ops->gso_segment(skb, features);
789 }
790 rcu_read_unlock();
791
792 if (unlikely(IS_ERR(segs)))
793 goto out;
794
795 for (skb = segs; skb; skb = skb->next) {
796 ipv6h = ipv6_hdr(skb);
797 ipv6h->payload_len = htons(skb->len - skb->mac_len -
798 sizeof(*ipv6h));
799 }
800
801out:
802 return segs;
803}
804
787e9208
HX		 805struct ipv6_gro_cb {
806 struct napi_gro_cb napi;
807 int proto;
808};
809
810#define IPV6_GRO_CB(skb) ((struct ipv6_gro_cb *)(skb)->cb)
811
812static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
813 struct sk_buff *skb)
814{
815 struct inet6_protocol *ops;
816 struct sk_buff **pp = NULL;
817 struct sk_buff *p;
818 struct ipv6hdr *iph;
819 unsigned int nlen;
820 int flush = 1;
821 int proto;
ebad18e9 822 __wsum csum;
787e9208 823
86911732
HX		 824 iph = skb_gro_header(skb, sizeof(*iph));
825 if (unlikely(!iph))
787e9208
HX		 826 goto out;
827
86911732
HX		 828 skb_gro_pull(skb, sizeof(*iph));
829 skb_set_transport_header(skb, skb_gro_offset(skb));
787e9208 830
86911732 831 flush += ntohs(iph->payload_len) != skb_gro_len(skb);
787e9208
HX		 832
833 rcu_read_lock();
86911732 834 proto = iph->nexthdr;
787e9208 835 ops = rcu_dereference(inet6_protos[proto]);
86911732
HX		 836 if (!ops || !ops->gro_receive) {
837 __pskb_pull(skb, skb_gro_offset(skb));
838 proto = ipv6_gso_pull_exthdrs(skb, proto);
839 skb_gro_pull(skb, -skb_transport_offset(skb));
840 skb_reset_transport_header(skb);
841 __skb_push(skb, skb_gro_offset(skb));
842
843 if (!ops || !ops->gro_receive)
844 goto out_unlock;
845
846 iph = ipv6_hdr(skb);
847 }
848
849 IPV6_GRO_CB(skb)->proto = proto;
787e9208
HX		 850
851 flush--;
787e9208
HX		 852 nlen = skb_network_header_len(skb);
853
854 for (p = *head; p; p = p->next) {
855 struct ipv6hdr *iph2;
856
857 if (!NAPI_GRO_CB(p)->same_flow)
858 continue;
859
860 iph2 = ipv6_hdr(p);
861
862 /* All fields must match except length. */
863 if (nlen != skb_network_header_len(p) ||
864 memcmp(iph, iph2, offsetof(struct ipv6hdr, payload_len)) ||
865 memcmp(&iph->nexthdr, &iph2->nexthdr,
866 nlen - offsetof(struct ipv6hdr, nexthdr))) {
867 NAPI_GRO_CB(p)->same_flow = 0;
868 continue;
869 }
870
871 NAPI_GRO_CB(p)->flush |= flush;
872 }
873
874 NAPI_GRO_CB(skb)->flush |= flush;
875
ebad18e9
HX		 876 csum = skb->csum;
877 skb_postpull_rcsum(skb, iph, skb_network_header_len(skb));
878
787e9208
HX		 879 pp = ops->gro_receive(head, skb);
880
ebad18e9
HX		 881 skb->csum = csum;
882
787e9208
HX		 883out_unlock:
884 rcu_read_unlock();
885
886out:
887 NAPI_GRO_CB(skb)->flush |= flush;
888
889 return pp;
890}
891
892static int ipv6_gro_complete(struct sk_buff *skb)
893{
894 struct inet6_protocol *ops;
895 struct ipv6hdr *iph = ipv6_hdr(skb);
896 int err = -ENOSYS;
897
898 iph->payload_len = htons(skb->len - skb_network_offset(skb) -
899 sizeof(*iph));
900
901 rcu_read_lock();
902 ops = rcu_dereference(inet6_protos[IPV6_GRO_CB(skb)->proto]);
903 if (WARN_ON(!ops || !ops->gro_complete))
904 goto out_unlock;
905
906 err = ops->gro_complete(skb);
907
908out_unlock:
909 rcu_read_unlock();
910
911 return err;
912}
913
7546dd97 914static struct packet_type ipv6_packet_type __read_mostly = {
09640e63 915 .type = cpu_to_be16(ETH_P_IPV6),
662397fd
YH		 916 .func = ipv6_rcv,
917 .gso_send_check = ipv6_gso_send_check,
918 .gso_segment = ipv6_gso_segment,
787e9208
HX		 919 .gro_receive = ipv6_gro_receive,
920 .gro_complete = ipv6_gro_complete,
662397fd
YH		 921};
922
923static int __init ipv6_packet_init(void)
924{
925 dev_add_pack(&ipv6_packet_type);
926 return 0;
927}
928
929static void ipv6_packet_cleanup(void)
930{
931 dev_remove_pack(&ipv6_packet_type);
932}
933
e43291cb
DL		 934static int __net_init ipv6_init_mibs(struct net *net)
935{
0c7ed677
DL		 936 if (snmp_mib_init((void **)net->mib.udp_stats_in6,
937 sizeof (struct udp_mib)) < 0)
938 return -ENOMEM;
be713a44
DL		 939 if (snmp_mib_init((void **)net->mib.udplite_stats_in6,
940 sizeof (struct udp_mib)) < 0)
941 goto err_udplite_mib;
9261e537
DL		 942 if (snmp_mib_init((void **)net->mib.ipv6_statistics,
943 sizeof(struct ipstats_mib)) < 0)
944 goto err_ip_mib;
945 if (snmp_mib_init((void **)net->mib.icmpv6_statistics,
946 sizeof(struct icmpv6_mib)) < 0)
947 goto err_icmp_mib;
948 if (snmp_mib_init((void **)net->mib.icmpv6msg_statistics,
949 sizeof(struct icmpv6msg_mib)) < 0)
950 goto err_icmpmsg_mib;
e43291cb 951 return 0;
be713a44 952
9261e537
DL		 953err_icmpmsg_mib:
954 snmp_mib_free((void **)net->mib.icmpv6_statistics);
955err_icmp_mib:
956 snmp_mib_free((void **)net->mib.ipv6_statistics);
957err_ip_mib:
958 snmp_mib_free((void **)net->mib.udplite_stats_in6);
be713a44
DL		 959err_udplite_mib:
960 snmp_mib_free((void **)net->mib.udp_stats_in6);
961 return -ENOMEM;
e43291cb
DL		 962}
963
964static void __net_exit ipv6_cleanup_mibs(struct net *net)
965{
0c7ed677 966 snmp_mib_free((void **)net->mib.udp_stats_in6);
be713a44 967 snmp_mib_free((void **)net->mib.udplite_stats_in6);
9261e537
DL		 968 snmp_mib_free((void **)net->mib.ipv6_statistics);
969 snmp_mib_free((void **)net->mib.icmpv6_statistics);
970 snmp_mib_free((void **)net->mib.icmpv6msg_statistics);
e43291cb
DL		 971}
972
e7dc8494 973static int __net_init inet6_net_init(struct net *net)
81c1c178 974{
0c96d8c5
DL		 975 int err = 0;
976
99bc9c4e 977 net->ipv6.sysctl.bindv6only = 0;
41a76906 978 net->ipv6.sysctl.icmpv6_time = 1*HZ;
e71e0349 979
e43291cb
DL		 980 err = ipv6_init_mibs(net);
981 if (err)
982 return err;
0c96d8c5
DL		 983#ifdef CONFIG_PROC_FS
984 err = udp6_proc_init(net);
985 if (err)
986 goto out;
6f8b13bc
DL		 987 err = tcp6_proc_init(net);
988 if (err)
989 goto proc_tcp6_fail;
6ab57e7e
DL		 990 err = ac6_proc_init(net);
991 if (err)
992 goto proc_ac6_fail;
0c96d8c5
DL		 993#endif
994 return err;
6f8b13bc
DL		 995
996#ifdef CONFIG_PROC_FS
6ab57e7e
DL		 997proc_ac6_fail:
998 tcp6_proc_exit(net);
6f8b13bc
DL		 999proc_tcp6_fail:
1000 udp6_proc_exit(net);
e43291cb
DL		 1001out:
1002 ipv6_cleanup_mibs(net);
1003 return err;
6f8b13bc 1004#endif
81c1c178
DL		 1005}
1006
1007static void inet6_net_exit(struct net *net)
1008{
0c96d8c5
DL		 1009#ifdef CONFIG_PROC_FS
1010 udp6_proc_exit(net);
6f8b13bc 1011 tcp6_proc_exit(net);
6ab57e7e 1012 ac6_proc_exit(net);
0c96d8c5 1013#endif
e43291cb 1014 ipv6_cleanup_mibs(net);
81c1c178
DL		 1015}
1016
1017static struct pernet_operations inet6_net_ops = {
1018 .init = inet6_net_init,
1019 .exit = inet6_net_exit,
1020};
1021
1da177e4
LT		 1022static int __init inet6_init(void)
1023{
1024 struct sk_buff *dummy_skb;
1ab1457c 1025 struct list_head *r;
fe7ca2e1 1026 int err = 0;
1da177e4 1027
ef047f5e
YH		 1028 BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
1029
fe7ca2e1
BH		 1030 /* Register the socket-side information for inet6_create. */
1031 for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
1032 INIT_LIST_HEAD(r);
1033
1034 if (disable_ipv6) {
1035 printk(KERN_INFO
1036 "IPv6: Loaded, but administratively disabled, "
1037 "reboot required to enable\n");
1038 goto out;
1039 }
1040
1da177e4
LT		 1041 err = proto_register(&tcpv6_prot, 1);
1042 if (err)
1043 goto out;
1044
1045 err = proto_register(&udpv6_prot, 1);
1046 if (err)
1047 goto out_unregister_tcp_proto;
1048
ba4e58ec 1049 err = proto_register(&udplitev6_prot, 1);
1da177e4
LT		 1050 if (err)
1051 goto out_unregister_udp_proto;
1052
ba4e58ec
GR		 1053 err = proto_register(&rawv6_prot, 1);
1054 if (err)
1055 goto out_unregister_udplite_proto;
1056
1da177e4 1057
1da177e4
LT		 1058 /* We MUST register RAW sockets before we create the ICMP6,
1059 * IGMP6, or NDISC control sockets.
1060 */
7f4e4868
DL		 1061 err = rawv6_init();
1062 if (err)
1063 goto out_unregister_raw_proto;
1da177e4
LT		 1064
1065 /* Register the family here so that the init calls below will
1066 * be able to create sockets. (?? is this dangerous ??)
1067 */
8eb55910
DM		 1068 err = sock_register(&inet6_family_ops);
1069 if (err)
7f4e4868 1070 goto out_sock_register_fail;
1da177e4 1071
eeb61f71
AV		 1072#ifdef CONFIG_SYSCTL
1073 err = ipv6_static_sysctl_register();
1074 if (err)
1075 goto static_sysctl_fail;
1076#endif
1da177e4
LT		 1077 /*
1078 * ipngwg API draft makes clear that the correct semantics
1079 * for TCP and UDP is to consider one TCP and UDP instance
1080 * in a host availiable by both INET and INET6 APIs and
1081 * able to communicate via both network protocols.
1082 */
1083
81c1c178
DL		 1084 err = register_pernet_subsys(&inet6_net_ops);
1085 if (err)
1086 goto register_pernet_fail;
9b0f976f 1087 err = icmpv6_init();
1da177e4
LT		 1088 if (err)
1089 goto icmp_fail;
623d1a1a
WC		 1090 err = ip6_mr_init();
1091 if (err)
1092 goto ipmr_fail;
9b0f976f 1093 err = ndisc_init();
1da177e4
LT		 1094 if (err)
1095 goto ndisc_fail;
9b0f976f 1096 err = igmp6_init();
1da177e4
LT		 1097 if (err)
1098 goto igmp_fail;
2cc7d573
HW		 1099 err = ipv6_netfilter_init();
1100 if (err)
1101 goto netfilter_fail;
1da177e4
LT		 1102 /* Create /proc/foo6 entries. */
1103#ifdef CONFIG_PROC_FS
1104 err = -ENOMEM;
1105 if (raw6_proc_init())
1106 goto proc_raw6_fail;
ba4e58ec
GR		 1107 if (udplite6_proc_init())
1108 goto proc_udplite6_fail;
1da177e4
LT		 1109 if (ipv6_misc_proc_init())
1110 goto proc_misc6_fail;
1da177e4
LT		 1111 if (if6_proc_init())
1112 goto proc_if6_fail;
1113#endif
e2fddf5e
DL		 1114 err = ip6_route_init();
1115 if (err)
1116 goto ip6_route_fail;
0a3e78ac
DL		 1117 err = ip6_flowlabel_init();
1118 if (err)
1119 goto ip6_flowlabel_fail;
1da177e4
LT		 1120 err = addrconf_init();
1121 if (err)
1122 goto addrconf_fail;
1da177e4
LT		 1123
1124 /* Init v6 extension headers. */
248b238d
DL		 1125 err = ipv6_exthdrs_init();
1126 if (err)
1127 goto ipv6_exthdrs_fail;
1128
853cbbaa
DL		 1129 err = ipv6_frag_init();
1130 if (err)
1131 goto ipv6_frag_fail;
1da177e4
LT		 1132
1133 /* Init v6 transport protocols. */
7f4e4868
DL		 1134 err = udpv6_init();
1135 if (err)
1136 goto udpv6_fail;
e2ed4052 1137
7f4e4868
DL		 1138 err = udplitev6_init();
1139 if (err)
1140 goto udplitev6_fail;
1141
1142 err = tcpv6_init();
1143 if (err)
1144 goto tcpv6_fail;
1145
1146 err = ipv6_packet_init();
1147 if (err)
1148 goto ipv6_packet_fail;
94911fe3
BT		 1149
1150#ifdef CONFIG_SYSCTL
1151 err = ipv6_sysctl_register();
1152 if (err)
1153 goto sysctl_fail;
1154#endif
1da177e4
LT		 1155out:
1156 return err;
1157
94911fe3
BT		 1158#ifdef CONFIG_SYSCTL
1159sysctl_fail:
1160 ipv6_packet_cleanup();
1161#endif
7f4e4868
DL		 1162ipv6_packet_fail:
1163 tcpv6_exit();
1164tcpv6_fail:
1165 udplitev6_exit();
1166udplitev6_fail:
1167 udpv6_exit();
1168udpv6_fail:
1169 ipv6_frag_exit();
853cbbaa
DL		 1170ipv6_frag_fail:
1171 ipv6_exthdrs_exit();
248b238d
DL		 1172ipv6_exthdrs_fail:
1173 addrconf_cleanup();
1da177e4
LT		 1174addrconf_fail:
1175 ip6_flowlabel_cleanup();
0a3e78ac 1176ip6_flowlabel_fail:
1da177e4 1177 ip6_route_cleanup();
e2fddf5e 1178ip6_route_fail:
1da177e4
LT		 1179#ifdef CONFIG_PROC_FS
1180 if6_proc_exit();
1181proc_if6_fail:
1da177e4
LT		 1182 ipv6_misc_proc_exit();
1183proc_misc6_fail:
ba4e58ec
GR		 1184 udplite6_proc_exit();
1185proc_udplite6_fail:
1da177e4
LT		 1186 raw6_proc_exit();
1187proc_raw6_fail:
1188#endif
2cc7d573
HW		 1189 ipv6_netfilter_fini();
1190netfilter_fail:
1da177e4
LT		 1191 igmp6_cleanup();
1192igmp_fail:
1193 ndisc_cleanup();
1194ndisc_fail:
623d1a1a
WC		 1195 ip6_mr_cleanup();
1196ipmr_fail:
1da177e4
LT		 1197 icmpv6_cleanup();
1198icmp_fail:
81c1c178
DL		 1199 unregister_pernet_subsys(&inet6_net_ops);
1200register_pernet_fail:
eeb61f71
AV		 1201#ifdef CONFIG_SYSCTL
1202 ipv6_static_sysctl_unregister();
1203static_sysctl_fail:
1204#endif
8eb55910 1205 sock_unregister(PF_INET6);
e2fddf5e 1206 rtnl_unregister_all(PF_INET6);
7f4e4868
DL		 1207out_sock_register_fail:
1208 rawv6_exit();
1da177e4
LT		 1209out_unregister_raw_proto:
1210 proto_unregister(&rawv6_prot);
ba4e58ec
GR		 1211out_unregister_udplite_proto:
1212 proto_unregister(&udplitev6_prot);
1da177e4
LT		 1213out_unregister_udp_proto:
1214 proto_unregister(&udpv6_prot);
1215out_unregister_tcp_proto:
1216 proto_unregister(&tcpv6_prot);
1217 goto out;
1218}
1219module_init(inet6_init);
1220
1221static void __exit inet6_exit(void)
1222{
ff8cf9a9
JD		 1223 if (disable_ipv6)
1224 return;
1225
1da177e4
LT		 1226 /* First of all disallow new sockets creation. */
1227 sock_unregister(PF_INET6);
c127ea2c
TG		 1228 /* Disallow any further netlink messages */
1229 rtnl_unregister_all(PF_INET6);
ca17c233 1230
94911fe3
BT		 1231#ifdef CONFIG_SYSCTL
1232 ipv6_sysctl_unregister();
1233#endif
7f4e4868
DL		 1234 udpv6_exit();
1235 udplitev6_exit();
1236 tcpv6_exit();
1237
ca17c233
JJ		 1238 /* Cleanup code parts. */
1239 ipv6_packet_cleanup();
853cbbaa 1240 ipv6_frag_exit();
248b238d 1241 ipv6_exthdrs_exit();
ca17c233
JJ		 1242 addrconf_cleanup();
1243 ip6_flowlabel_cleanup();
1244 ip6_route_cleanup();
1da177e4 1245#ifdef CONFIG_PROC_FS
ca17c233
JJ		 1246
1247 /* Cleanup code parts. */
1da177e4 1248 if6_proc_exit();
1ab1457c 1249 ipv6_misc_proc_exit();
1ab1457c 1250 udplite6_proc_exit();
1ab1457c 1251 raw6_proc_exit();
2c8d7ca0 1252#endif
2cc7d573 1253 ipv6_netfilter_fini();
ca17c233 1254 igmp6_cleanup();
1da177e4 1255 ndisc_cleanup();
623d1a1a 1256 ip6_mr_cleanup();
1da177e4 1257 icmpv6_cleanup();
7f4e4868 1258 rawv6_exit();
94911fe3 1259
81c1c178 1260 unregister_pernet_subsys(&inet6_net_ops);
eeb61f71
AV		 1261#ifdef CONFIG_SYSCTL
1262 ipv6_static_sysctl_unregister();
1263#endif
1da177e4 1264 proto_unregister(&rawv6_prot);
ca17c233 1265 proto_unregister(&udplitev6_prot);
1da177e4
LT		 1266 proto_unregister(&udpv6_prot);
1267 proto_unregister(&tcpv6_prot);
1268}
1269module_exit(inet6_exit);
1270
1271MODULE_ALIAS_NETPROTO(PF_INET6);
kernel source for telekom puls (alcatel/mediatek)