Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * PF_INET6 socket protocol family | |
1ab1457c | 3 | * Linux INET6 implementation |
1da177e4 LT |
4 | * |
5 | * Authors: | |
1ab1457c | 6 | * Pedro Roque <roque@di.fc.ul.pt> |
1da177e4 LT |
7 | * |
8 | * Adapted from linux/net/ipv4/af_inet.c | |
9 | * | |
67ba4152 | 10 | * Fixes: |
1da177e4 | 11 | * piggy, Karl Knutson : Socket protocol table |
67ba4152 IM |
12 | * Hideaki YOSHIFUJI : sin6_scope_id support |
13 | * Arnaldo Melo : check proc_net_create return, cleanups | |
1da177e4 LT |
14 | * |
15 | * This program is free software; you can redistribute it and/or | |
67ba4152 IM |
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. | |
1da177e4 LT |
19 | */ |
20 | ||
f3213831 | 21 | #define pr_fmt(fmt) "IPv6: " fmt |
1da177e4 LT |
22 | |
23 | #include <linux/module.h> | |
4fc268d2 | 24 | #include <linux/capability.h> |
1da177e4 LT |
25 | #include <linux/errno.h> |
26 | #include <linux/types.h> | |
27 | #include <linux/socket.h> | |
28 | #include <linux/in.h> | |
29 | #include <linux/kernel.h> | |
1da177e4 LT |
30 | #include <linux/timer.h> |
31 | #include <linux/string.h> | |
32 | #include <linux/sockios.h> | |
33 | #include <linux/net.h> | |
34 | #include <linux/fcntl.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/proc_fs.h> | |
38 | #include <linux/stat.h> | |
39 | #include <linux/init.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
1da177e4 LT |
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 | 51 | #include <net/tcp.h> |
6d0bfe22 | 52 | #include <net/ping.h> |
1da177e4 LT |
53 | #include <net/protocol.h> |
54 | #include <net/inet_common.h> | |
1668e010 | 55 | #include <net/route.h> |
1da177e4 LT |
56 | #include <net/transp_v6.h> |
57 | #include <net/ip6_route.h> | |
58 | #include <net/addrconf.h> | |
f564f45c | 59 | #include <net/ndisc.h> |
1da177e4 LT |
60 | #ifdef CONFIG_IPV6_TUNNEL |
61 | #include <net/ip6_tunnel.h> | |
62 | #endif | |
63 | ||
64 | #include <asm/uaccess.h> | |
7bc570c8 | 65 | #include <linux/mroute6.h> |
1da177e4 | 66 | |
a6024562 TH |
67 | #include "ip6_offload.h" |
68 | ||
1da177e4 LT |
69 | MODULE_AUTHOR("Cast of dozens"); |
70 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
71 | MODULE_LICENSE("GPL"); | |
72 | ||
f1267347 | 73 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
74 | * build a new socket. |
75 | */ | |
76 | static struct list_head inetsw6[SOCK_MAX]; | |
77 | static DEFINE_SPINLOCK(inetsw6_lock); | |
78 | ||
56d417b1 BH |
79 | struct ipv6_params ipv6_defaults = { |
80 | .disable_ipv6 = 0, | |
81 | .autoconf = 1, | |
82 | }; | |
83 | ||
647c0c70 | 84 | static int disable_ipv6_mod; |
56d417b1 BH |
85 | |
86 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
87 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
88 | ||
89 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
90 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
91 | ||
92 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
93 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 94 | |
e4348637 DA |
95 | bool ipv6_mod_enabled(void) |
96 | { | |
97 | return disable_ipv6_mod == 0; | |
98 | } | |
99 | EXPORT_SYMBOL_GPL(ipv6_mod_enabled); | |
100 | ||
1da177e4 LT |
101 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
102 | { | |
103 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
104 | ||
105 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
106 | } | |
107 | ||
3f378b68 EP |
108 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
109 | int kern) | |
1da177e4 LT |
110 | { |
111 | struct inet_sock *inet; | |
112 | struct ipv6_pinfo *np; | |
113 | struct sock *sk; | |
1da177e4 LT |
114 | struct inet_protosw *answer; |
115 | struct proto *answer_prot; | |
116 | unsigned char answer_flags; | |
af1afe86 YH |
117 | int try_loading_module = 0; |
118 | int err; | |
1da177e4 | 119 | |
79462ad0 HFS |
120 | if (protocol < 0 || protocol >= IPPROTO_MAX) |
121 | return -EINVAL; | |
122 | ||
1da177e4 | 123 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
124 | lookup_protocol: |
125 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 126 | rcu_read_lock(); |
696adfe8 | 127 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 128 | |
696adfe8 | 129 | err = 0; |
1da177e4 LT |
130 | /* Check the non-wild match. */ |
131 | if (protocol == answer->protocol) { | |
132 | if (protocol != IPPROTO_IP) | |
133 | break; | |
134 | } else { | |
135 | /* Check for the two wild cases. */ | |
136 | if (IPPROTO_IP == protocol) { | |
137 | protocol = answer->protocol; | |
138 | break; | |
139 | } | |
140 | if (IPPROTO_IP == answer->protocol) | |
141 | break; | |
142 | } | |
af1afe86 | 143 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
144 | } |
145 | ||
696adfe8 | 146 | if (err) { |
af1afe86 YH |
147 | if (try_loading_module < 2) { |
148 | rcu_read_unlock(); | |
149 | /* | |
150 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
151 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
152 | */ | |
153 | if (++try_loading_module == 1) | |
154 | request_module("net-pf-%d-proto-%d-type-%d", | |
155 | PF_INET6, protocol, sock->type); | |
156 | /* | |
157 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
158 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
159 | */ | |
160 | else | |
161 | request_module("net-pf-%d-proto-%d", | |
162 | PF_INET6, protocol); | |
163 | goto lookup_protocol; | |
164 | } else | |
165 | goto out_rcu_unlock; | |
166 | } | |
167 | ||
168 | err = -EPERM; | |
af31f412 EB |
169 | if (sock->type == SOCK_RAW && !kern && |
170 | !ns_capable(net->user_ns, CAP_NET_RAW)) | |
1da177e4 | 171 | goto out_rcu_unlock; |
1da177e4 LT |
172 | |
173 | sock->ops = answer->ops; | |
1da177e4 | 174 | answer_prot = answer->prot; |
1da177e4 LT |
175 | answer_flags = answer->flags; |
176 | rcu_read_unlock(); | |
177 | ||
63159f29 | 178 | WARN_ON(!answer_prot->slab); |
1da177e4 | 179 | |
af1afe86 | 180 | err = -ENOBUFS; |
11aa9c28 | 181 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot, kern); |
63159f29 | 182 | if (!sk) |
1da177e4 LT |
183 | goto out; |
184 | ||
185 | sock_init_data(sock, sk); | |
186 | ||
af1afe86 | 187 | err = 0; |
1da177e4 | 188 | if (INET_PROTOSW_REUSE & answer_flags) |
4a17fd52 | 189 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
190 | |
191 | inet = inet_sk(sk); | |
469de9b9 | 192 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
193 | |
194 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 195 | inet->inet_num = protocol; |
1da177e4 LT |
196 | if (IPPROTO_RAW == protocol) |
197 | inet->hdrincl = 1; | |
198 | } | |
199 | ||
e6848976 | 200 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
201 | sk->sk_family = PF_INET6; |
202 | sk->sk_protocol = protocol; | |
203 | ||
204 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
205 | ||
206 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
207 | np->hop_limit = -1; | |
f935aa9e | 208 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
209 | np->mc_loop = 1; |
210 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
42240901 | 211 | np->autoflowlabel = ip6_default_np_autolabel(sock_net(sk)); |
9fe516ba | 212 | sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 213 | |
1da177e4 LT |
214 | /* Init the ipv4 part of the socket since we can have sockets |
215 | * using v6 API for ipv4. | |
216 | */ | |
217 | inet->uc_ttl = -1; | |
218 | ||
219 | inet->mc_loop = 1; | |
220 | inet->mc_ttl = 1; | |
221 | inet->mc_index = 0; | |
222 | inet->mc_list = NULL; | |
4c507d28 | 223 | inet->rcv_tos = 0; |
1da177e4 | 224 | |
974eda11 | 225 | if (net->ipv4.sysctl_ip_no_pmtu_disc) |
1da177e4 LT |
226 | inet->pmtudisc = IP_PMTUDISC_DONT; |
227 | else | |
228 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 229 | /* |
e6848976 ACM |
230 | * Increment only the relevant sk_prot->socks debug field, this changes |
231 | * the previous behaviour of incrementing both the equivalent to | |
232 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
233 | * | |
234 | * This allows better debug granularity as we'll know exactly how many | |
235 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
236 | * transport protocol socks. -acme | |
237 | */ | |
238 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 239 | |
c720c7e8 | 240 | if (inet->inet_num) { |
1da177e4 LT |
241 | /* It assumes that any protocol which allows |
242 | * the user to assign a number at socket | |
243 | * creation time automatically shares. | |
244 | */ | |
c720c7e8 | 245 | inet->inet_sport = htons(inet->inet_num); |
086c653f CG |
246 | err = sk->sk_prot->hash(sk); |
247 | if (err) { | |
248 | sk_common_release(sk); | |
249 | goto out; | |
250 | } | |
1da177e4 LT |
251 | } |
252 | if (sk->sk_prot->init) { | |
af1afe86 YH |
253 | err = sk->sk_prot->init(sk); |
254 | if (err) { | |
1da177e4 LT |
255 | sk_common_release(sk); |
256 | goto out; | |
257 | } | |
258 | } | |
259 | out: | |
af1afe86 | 260 | return err; |
1da177e4 LT |
261 | out_rcu_unlock: |
262 | rcu_read_unlock(); | |
263 | goto out; | |
264 | } | |
265 | ||
266 | ||
267 | /* bind for INET6 API */ | |
268 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
269 | { | |
647c0c70 | 270 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
271 | struct sock *sk = sock->sk; |
272 | struct inet_sock *inet = inet_sk(sk); | |
273 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 274 | struct net *net = sock_net(sk); |
fd683222 | 275 | __be32 v4addr = 0; |
1da177e4 LT |
276 | unsigned short snum; |
277 | int addr_type = 0; | |
278 | int err = 0; | |
279 | ||
280 | /* If the socket has its own bind function then use it. */ | |
281 | if (sk->sk_prot->bind) | |
282 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
283 | ||
284 | if (addr_len < SIN6_LEN_RFC2133) | |
285 | return -EINVAL; | |
5a079c30 MM |
286 | |
287 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 288 | return -EAFNOSUPPORT; |
5a079c30 | 289 | |
1da177e4 LT |
290 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
291 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
292 | return -EINVAL; | |
293 | ||
294 | snum = ntohs(addr->sin6_port); | |
3594698a | 295 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
1da177e4 LT |
296 | return -EACCES; |
297 | ||
298 | lock_sock(sk); | |
299 | ||
300 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 301 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
302 | err = -EINVAL; |
303 | goto out; | |
304 | } | |
305 | ||
306 | /* Check if the address belongs to the host. */ | |
307 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
308 | int chk_addr_ret; |
309 | ||
783ed5a7 VY |
310 | /* Binding to v4-mapped address on a v6-only socket |
311 | * makes no sense | |
312 | */ | |
9fe516ba | 313 | if (sk->sk_ipv6only) { |
783ed5a7 VY |
314 | err = -EINVAL; |
315 | goto out; | |
316 | } | |
63d9950b | 317 | |
a34f0b31 | 318 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 319 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b | 320 | chk_addr_ret = inet_addr_type(net, v4addr); |
49a60158 | 321 | if (!net->ipv4.sysctl_ip_nonlocal_bind && |
63d9950b VY |
322 | !(inet->freebind || inet->transparent) && |
323 | v4addr != htonl(INADDR_ANY) && | |
324 | chk_addr_ret != RTN_LOCAL && | |
325 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
326 | chk_addr_ret != RTN_BROADCAST) { |
327 | err = -EADDRNOTAVAIL; | |
1da177e4 | 328 | goto out; |
ca6982b8 | 329 | } |
1da177e4 LT |
330 | } else { |
331 | if (addr_type != IPV6_ADDR_ANY) { | |
332 | struct net_device *dev = NULL; | |
333 | ||
16ba5e8e | 334 | rcu_read_lock(); |
842df073 | 335 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
336 | if (addr_len >= sizeof(struct sockaddr_in6) && |
337 | addr->sin6_scope_id) { | |
338 | /* Override any existing binding, if another one | |
339 | * is supplied by user. | |
340 | */ | |
341 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
342 | } | |
1ab1457c | 343 | |
1da177e4 LT |
344 | /* Binding to link-local address requires an interface */ |
345 | if (!sk->sk_bound_dev_if) { | |
346 | err = -EINVAL; | |
16ba5e8e | 347 | goto out_unlock; |
1da177e4 | 348 | } |
16ba5e8e | 349 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
350 | if (!dev) { |
351 | err = -ENODEV; | |
16ba5e8e | 352 | goto out_unlock; |
1da177e4 LT |
353 | } |
354 | } | |
355 | ||
356 | /* ipv4 addr of the socket is invalid. Only the | |
357 | * unspecified and mapped address have a v4 equivalent. | |
358 | */ | |
359 | v4addr = LOOPBACK4_IPV6; | |
360 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
35a256fe TH |
361 | if (!net->ipv6.sysctl.ip_nonlocal_bind && |
362 | !(inet->freebind || inet->transparent) && | |
0a513f6a | 363 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 364 | dev, 0)) { |
1da177e4 | 365 | err = -EADDRNOTAVAIL; |
16ba5e8e | 366 | goto out_unlock; |
1da177e4 LT |
367 | } |
368 | } | |
16ba5e8e | 369 | rcu_read_unlock(); |
1da177e4 LT |
370 | } |
371 | } | |
372 | ||
c720c7e8 ED |
373 | inet->inet_rcv_saddr = v4addr; |
374 | inet->inet_saddr = v4addr; | |
1da177e4 | 375 | |
efe4208f | 376 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
1ab1457c | 377 | |
1da177e4 | 378 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 379 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
380 | |
381 | /* Make sure we are allowed to bind here. */ | |
90c337da ED |
382 | if ((snum || !inet->bind_address_no_port) && |
383 | sk->sk_prot->get_port(sk, snum)) { | |
1da177e4 LT |
384 | inet_reset_saddr(sk); |
385 | err = -EADDRINUSE; | |
386 | goto out; | |
387 | } | |
388 | ||
0f8d3c7a | 389 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 390 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a | 391 | if (addr_type != IPV6_ADDR_MAPPED) |
9fe516ba | 392 | sk->sk_ipv6only = 1; |
0f8d3c7a | 393 | } |
1da177e4 LT |
394 | if (snum) |
395 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
396 | inet->inet_sport = htons(inet->inet_num); |
397 | inet->inet_dport = 0; | |
398 | inet->inet_daddr = 0; | |
1da177e4 LT |
399 | out: |
400 | release_sock(sk); | |
401 | return err; | |
16ba5e8e ED |
402 | out_unlock: |
403 | rcu_read_unlock(); | |
404 | goto out; | |
1da177e4 | 405 | } |
7159039a YH |
406 | EXPORT_SYMBOL(inet6_bind); |
407 | ||
1da177e4 LT |
408 | int inet6_release(struct socket *sock) |
409 | { | |
410 | struct sock *sk = sock->sk; | |
411 | ||
63159f29 | 412 | if (!sk) |
1da177e4 LT |
413 | return -EINVAL; |
414 | ||
415 | /* Free mc lists */ | |
416 | ipv6_sock_mc_close(sk); | |
417 | ||
418 | /* Free ac lists */ | |
419 | ipv6_sock_ac_close(sk); | |
420 | ||
421 | return inet_release(sock); | |
422 | } | |
7159039a YH |
423 | EXPORT_SYMBOL(inet6_release); |
424 | ||
7d06b2e0 | 425 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
426 | { |
427 | struct ipv6_pinfo *np = inet6_sk(sk); | |
428 | struct sk_buff *skb; | |
429 | struct ipv6_txoptions *opt; | |
430 | ||
1da177e4 LT |
431 | /* Release rx options */ |
432 | ||
647c0c70 | 433 | skb = xchg(&np->pktoptions, NULL); |
53b24b8f | 434 | if (skb) |
1da177e4 | 435 | kfree_skb(skb); |
4b340ae2 | 436 | |
647c0c70 | 437 | skb = xchg(&np->rxpmtu, NULL); |
53b24b8f | 438 | if (skb) |
4b340ae2 | 439 | kfree_skb(skb); |
1da177e4 LT |
440 | |
441 | /* Free flowlabels */ | |
442 | fl6_free_socklist(sk); | |
443 | ||
444 | /* Free tx options */ | |
445 | ||
45f6fad8 ED |
446 | opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL); |
447 | if (opt) { | |
448 | atomic_sub(opt->tot_len, &sk->sk_omem_alloc); | |
449 | txopt_put(opt); | |
450 | } | |
1da177e4 | 451 | } |
3cf3dc6c ACM |
452 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
453 | ||
1da177e4 LT |
454 | /* |
455 | * This does both peername and sockname. | |
456 | */ | |
1ab1457c | 457 | |
1da177e4 LT |
458 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
459 | int *uaddr_len, int peer) | |
460 | { | |
647c0c70 | 461 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
462 | struct sock *sk = sock->sk; |
463 | struct inet_sock *inet = inet_sk(sk); | |
464 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 465 | |
1da177e4 LT |
466 | sin->sin6_family = AF_INET6; |
467 | sin->sin6_flowinfo = 0; | |
468 | sin->sin6_scope_id = 0; | |
469 | if (peer) { | |
c720c7e8 | 470 | if (!inet->inet_dport) |
1da177e4 LT |
471 | return -ENOTCONN; |
472 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
473 | peer == 1) | |
474 | return -ENOTCONN; | |
c720c7e8 | 475 | sin->sin6_port = inet->inet_dport; |
efe4208f | 476 | sin->sin6_addr = sk->sk_v6_daddr; |
1da177e4 LT |
477 | if (np->sndflow) |
478 | sin->sin6_flowinfo = np->flow_label; | |
479 | } else { | |
efe4208f | 480 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
4e3fd7a0 | 481 | sin->sin6_addr = np->saddr; |
1da177e4 | 482 | else |
efe4208f | 483 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
1da177e4 | 484 | |
c720c7e8 | 485 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 486 | } |
842df073 HFS |
487 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
488 | sk->sk_bound_dev_if); | |
1da177e4 | 489 | *uaddr_len = sizeof(*sin); |
a02cec21 | 490 | return 0; |
1da177e4 | 491 | } |
7159039a YH |
492 | EXPORT_SYMBOL(inet6_getname); |
493 | ||
1da177e4 LT |
494 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
495 | { | |
496 | struct sock *sk = sock->sk; | |
3b1e0a65 | 497 | struct net *net = sock_net(sk); |
1da177e4 | 498 | |
647c0c70 | 499 | switch (cmd) { |
1da177e4 LT |
500 | case SIOCGSTAMP: |
501 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
502 | ||
ae40eb1e ED |
503 | case SIOCGSTAMPNS: |
504 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
505 | ||
1da177e4 LT |
506 | case SIOCADDRT: |
507 | case SIOCDELRT: | |
1ab1457c | 508 | |
a02cec21 | 509 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
510 | |
511 | case SIOCSIFADDR: | |
af284937 | 512 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 513 | case SIOCDIFADDR: |
af284937 | 514 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 515 | case SIOCSIFDSTADDR: |
af284937 | 516 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 517 | default: |
b5e5fa5e CH |
518 | if (!sk->sk_prot->ioctl) |
519 | return -ENOIOCTLCMD; | |
520 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
521 | } |
522 | /*NOTREACHED*/ | |
a02cec21 | 523 | return 0; |
1da177e4 | 524 | } |
7159039a YH |
525 | EXPORT_SYMBOL(inet6_ioctl); |
526 | ||
90ddc4f0 | 527 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
528 | .family = PF_INET6, |
529 | .owner = THIS_MODULE, | |
530 | .release = inet6_release, | |
531 | .bind = inet6_bind, | |
532 | .connect = inet_stream_connect, /* ok */ | |
533 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
534 | .accept = inet_accept, /* ok */ | |
535 | .getname = inet6_getname, | |
536 | .poll = tcp_poll, /* ok */ | |
537 | .ioctl = inet6_ioctl, /* must change */ | |
538 | .listen = inet_listen, /* ok */ | |
539 | .shutdown = inet_shutdown, /* ok */ | |
540 | .setsockopt = sock_common_setsockopt, /* ok */ | |
541 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
542 | .sendmsg = inet_sendmsg, /* ok */ |
543 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 544 | .mmap = sock_no_mmap, |
7ba42910 | 545 | .sendpage = inet_sendpage, |
a0974dd3 | 546 | .splice_read = tcp_splice_read, |
3fdadf7d | 547 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
548 | .compat_setsockopt = compat_sock_common_setsockopt, |
549 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 550 | #endif |
1da177e4 LT |
551 | }; |
552 | ||
90ddc4f0 | 553 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
554 | .family = PF_INET6, |
555 | .owner = THIS_MODULE, | |
556 | .release = inet6_release, | |
557 | .bind = inet6_bind, | |
558 | .connect = inet_dgram_connect, /* ok */ | |
559 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
560 | .accept = sock_no_accept, /* a do nothing */ | |
561 | .getname = inet6_getname, | |
562 | .poll = udp_poll, /* ok */ | |
563 | .ioctl = inet6_ioctl, /* must change */ | |
564 | .listen = sock_no_listen, /* ok */ | |
565 | .shutdown = inet_shutdown, /* ok */ | |
566 | .setsockopt = sock_common_setsockopt, /* ok */ | |
567 | .getsockopt = sock_common_getsockopt, /* ok */ | |
568 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 569 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
570 | .mmap = sock_no_mmap, |
571 | .sendpage = sock_no_sendpage, | |
627d2d6b | 572 | .set_peek_off = sk_set_peek_off, |
3fdadf7d | 573 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
574 | .compat_setsockopt = compat_sock_common_setsockopt, |
575 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 576 | #endif |
1da177e4 LT |
577 | }; |
578 | ||
ec1b4cf7 | 579 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
580 | .family = PF_INET6, |
581 | .create = inet6_create, | |
582 | .owner = THIS_MODULE, | |
583 | }; | |
584 | ||
87c3efbf | 585 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
586 | { |
587 | struct list_head *lh; | |
588 | struct inet_protosw *answer; | |
1da177e4 | 589 | struct list_head *last_perm; |
87c3efbf DL |
590 | int protocol = p->protocol; |
591 | int ret; | |
1da177e4 LT |
592 | |
593 | spin_lock_bh(&inetsw6_lock); | |
594 | ||
87c3efbf | 595 | ret = -EINVAL; |
1da177e4 LT |
596 | if (p->type >= SOCK_MAX) |
597 | goto out_illegal; | |
598 | ||
599 | /* If we are trying to override a permanent protocol, bail. */ | |
600 | answer = NULL; | |
87c3efbf | 601 | ret = -EPERM; |
1da177e4 LT |
602 | last_perm = &inetsw6[p->type]; |
603 | list_for_each(lh, &inetsw6[p->type]) { | |
604 | answer = list_entry(lh, struct inet_protosw, list); | |
605 | ||
606 | /* Check only the non-wild match. */ | |
607 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
608 | if (protocol == answer->protocol) | |
609 | break; | |
610 | last_perm = lh; | |
611 | } | |
612 | ||
613 | answer = NULL; | |
614 | } | |
615 | if (answer) | |
616 | goto out_permanent; | |
617 | ||
618 | /* Add the new entry after the last permanent entry if any, so that | |
619 | * the new entry does not override a permanent entry when matched with | |
620 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 621 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
622 | * system automatically returns to the old behavior. |
623 | */ | |
624 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 625 | ret = 0; |
1da177e4 LT |
626 | out: |
627 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 628 | return ret; |
1da177e4 LT |
629 | |
630 | out_permanent: | |
f3213831 | 631 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
632 | goto out; |
633 | ||
634 | out_illegal: | |
f3213831 | 635 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
636 | p->type); |
637 | goto out; | |
638 | } | |
7159039a YH |
639 | EXPORT_SYMBOL(inet6_register_protosw); |
640 | ||
1da177e4 LT |
641 | void |
642 | inet6_unregister_protosw(struct inet_protosw *p) | |
643 | { | |
644 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 645 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
646 | p->protocol); |
647 | } else { | |
648 | spin_lock_bh(&inetsw6_lock); | |
649 | list_del_rcu(&p->list); | |
650 | spin_unlock_bh(&inetsw6_lock); | |
651 | ||
652 | synchronize_net(); | |
653 | } | |
654 | } | |
7159039a YH |
655 | EXPORT_SYMBOL(inet6_unregister_protosw); |
656 | ||
b9750ce1 ACM |
657 | int inet6_sk_rebuild_header(struct sock *sk) |
658 | { | |
b9750ce1 | 659 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 660 | struct dst_entry *dst; |
b9750ce1 ACM |
661 | |
662 | dst = __sk_dst_check(sk, np->dst_cookie); | |
663 | ||
63159f29 | 664 | if (!dst) { |
b9750ce1 | 665 | struct inet_sock *inet = inet_sk(sk); |
20c59de2 | 666 | struct in6_addr *final_p, final; |
4c9483b2 DM |
667 | struct flowi6 fl6; |
668 | ||
669 | memset(&fl6, 0, sizeof(fl6)); | |
670 | fl6.flowi6_proto = sk->sk_protocol; | |
efe4208f | 671 | fl6.daddr = sk->sk_v6_daddr; |
4e3fd7a0 | 672 | fl6.saddr = np->saddr; |
4c9483b2 DM |
673 | fl6.flowlabel = np->flow_label; |
674 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
675 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
676 | fl6.fl6_dport = inet->inet_dport; |
677 | fl6.fl6_sport = inet->inet_sport; | |
4c9483b2 DM |
678 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
679 | ||
45f6fad8 ED |
680 | rcu_read_lock(); |
681 | final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), | |
682 | &final); | |
683 | rcu_read_unlock(); | |
4c9483b2 | 684 | |
0e0d44ab | 685 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
68d0c6d3 | 686 | if (IS_ERR(dst)) { |
b9750ce1 | 687 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
688 | sk->sk_err_soft = -PTR_ERR(dst); |
689 | return PTR_ERR(dst); | |
b9750ce1 ACM |
690 | } |
691 | ||
6bd4f355 | 692 | ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
693 | } |
694 | ||
695 | return 0; | |
696 | } | |
b9750ce1 ACM |
697 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
698 | ||
a224772d ED |
699 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, |
700 | const struct inet6_skb_parm *opt) | |
399c07de | 701 | { |
92113bfd | 702 | const struct ipv6_pinfo *np = inet6_sk(sk); |
399c07de ACM |
703 | |
704 | if (np->rxopt.all) { | |
8b58a398 FW |
705 | if (((opt->flags & IP6SKB_HOPBYHOP) && |
706 | (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) || | |
ac1eabca | 707 | (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) && |
399c07de ACM |
708 | np->rxopt.bits.rxflow) || |
709 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
710 | np->rxopt.bits.osrcrt)) || | |
711 | ((opt->dst1 || opt->dst0) && | |
712 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 713 | return true; |
399c07de | 714 | } |
92113bfd | 715 | return false; |
399c07de | 716 | } |
399c07de ACM |
717 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
718 | ||
7546dd97 | 719 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 720 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 721 | .func = ipv6_rcv, |
22061d80 VY |
722 | }; |
723 | ||
662397fd YH |
724 | static int __init ipv6_packet_init(void) |
725 | { | |
726 | dev_add_pack(&ipv6_packet_type); | |
727 | return 0; | |
728 | } | |
729 | ||
730 | static void ipv6_packet_cleanup(void) | |
731 | { | |
732 | dev_remove_pack(&ipv6_packet_type); | |
733 | } | |
734 | ||
e43291cb DL |
735 | static int __net_init ipv6_init_mibs(struct net *net) |
736 | { | |
827da44c JS |
737 | int i; |
738 | ||
698365fa WC |
739 | net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); |
740 | if (!net->mib.udp_stats_in6) | |
0c7ed677 | 741 | return -ENOMEM; |
698365fa WC |
742 | net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); |
743 | if (!net->mib.udplite_stats_in6) | |
be713a44 | 744 | goto err_udplite_mib; |
698365fa WC |
745 | net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); |
746 | if (!net->mib.ipv6_statistics) | |
9261e537 | 747 | goto err_ip_mib; |
827da44c JS |
748 | |
749 | for_each_possible_cpu(i) { | |
750 | struct ipstats_mib *af_inet6_stats; | |
698365fa | 751 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); |
827da44c | 752 | u64_stats_init(&af_inet6_stats->syncp); |
827da44c JS |
753 | } |
754 | ||
755 | ||
698365fa WC |
756 | net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); |
757 | if (!net->mib.icmpv6_statistics) | |
9261e537 | 758 | goto err_icmp_mib; |
2a24444f ED |
759 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
760 | GFP_KERNEL); | |
761 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 762 | goto err_icmpmsg_mib; |
e43291cb | 763 | return 0; |
be713a44 | 764 | |
9261e537 | 765 | err_icmpmsg_mib: |
698365fa | 766 | free_percpu(net->mib.icmpv6_statistics); |
9261e537 | 767 | err_icmp_mib: |
698365fa | 768 | free_percpu(net->mib.ipv6_statistics); |
9261e537 | 769 | err_ip_mib: |
698365fa | 770 | free_percpu(net->mib.udplite_stats_in6); |
be713a44 | 771 | err_udplite_mib: |
698365fa | 772 | free_percpu(net->mib.udp_stats_in6); |
be713a44 | 773 | return -ENOMEM; |
e43291cb DL |
774 | } |
775 | ||
2c8c1e72 | 776 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 777 | { |
698365fa WC |
778 | free_percpu(net->mib.udp_stats_in6); |
779 | free_percpu(net->mib.udplite_stats_in6); | |
780 | free_percpu(net->mib.ipv6_statistics); | |
781 | free_percpu(net->mib.icmpv6_statistics); | |
2a24444f | 782 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
783 | } |
784 | ||
e7dc8494 | 785 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 786 | { |
0c96d8c5 DL |
787 | int err = 0; |
788 | ||
99bc9c4e | 789 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 790 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
6444f72b | 791 | net->ipv6.sysctl.flowlabel_consistency = 1; |
42240901 | 792 | net->ipv6.sysctl.auto_flowlabels = IP6_DEFAULT_AUTO_FLOW_LABELS; |
1855b7c3 HFS |
793 | net->ipv6.sysctl.idgen_retries = 3; |
794 | net->ipv6.sysctl.idgen_delay = 1 * HZ; | |
be26849b | 795 | net->ipv6.sysctl.flowlabel_state_ranges = 0; |
812918c4 | 796 | atomic_set(&net->ipv6.fib6_sernum, 1); |
e71e0349 | 797 | |
e43291cb DL |
798 | err = ipv6_init_mibs(net); |
799 | if (err) | |
800 | return err; | |
0c96d8c5 DL |
801 | #ifdef CONFIG_PROC_FS |
802 | err = udp6_proc_init(net); | |
803 | if (err) | |
804 | goto out; | |
6f8b13bc DL |
805 | err = tcp6_proc_init(net); |
806 | if (err) | |
807 | goto proc_tcp6_fail; | |
6ab57e7e DL |
808 | err = ac6_proc_init(net); |
809 | if (err) | |
810 | goto proc_ac6_fail; | |
0c96d8c5 DL |
811 | #endif |
812 | return err; | |
6f8b13bc DL |
813 | |
814 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
815 | proc_ac6_fail: |
816 | tcp6_proc_exit(net); | |
6f8b13bc DL |
817 | proc_tcp6_fail: |
818 | udp6_proc_exit(net); | |
e43291cb DL |
819 | out: |
820 | ipv6_cleanup_mibs(net); | |
821 | return err; | |
6f8b13bc | 822 | #endif |
81c1c178 DL |
823 | } |
824 | ||
2c8c1e72 | 825 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 826 | { |
0c96d8c5 DL |
827 | #ifdef CONFIG_PROC_FS |
828 | udp6_proc_exit(net); | |
6f8b13bc | 829 | tcp6_proc_exit(net); |
6ab57e7e | 830 | ac6_proc_exit(net); |
0c96d8c5 | 831 | #endif |
e43291cb | 832 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
833 | } |
834 | ||
835 | static struct pernet_operations inet6_net_ops = { | |
836 | .init = inet6_net_init, | |
837 | .exit = inet6_net_exit, | |
838 | }; | |
839 | ||
5f81bd2e CW |
840 | static const struct ipv6_stub ipv6_stub_impl = { |
841 | .ipv6_sock_mc_join = ipv6_sock_mc_join, | |
842 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, | |
843 | .ipv6_dst_lookup = ip6_dst_lookup, | |
844 | .udpv6_encap_enable = udpv6_encap_enable, | |
f564f45c | 845 | .ndisc_send_na = ndisc_send_na, |
e15a00aa | 846 | .nd_tbl = &nd_tbl, |
5f81bd2e CW |
847 | }; |
848 | ||
1da177e4 LT |
849 | static int __init inet6_init(void) |
850 | { | |
1ab1457c | 851 | struct list_head *r; |
fe7ca2e1 | 852 | int err = 0; |
1da177e4 | 853 | |
b4772ef8 | 854 | sock_skb_cb_check_size(sizeof(struct inet6_skb_parm)); |
ef047f5e | 855 | |
fe7ca2e1 | 856 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 857 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
858 | INIT_LIST_HEAD(r); |
859 | ||
56d417b1 | 860 | if (disable_ipv6_mod) { |
f3213831 | 861 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
862 | goto out; |
863 | } | |
864 | ||
1da177e4 LT |
865 | err = proto_register(&tcpv6_prot, 1); |
866 | if (err) | |
867 | goto out; | |
868 | ||
869 | err = proto_register(&udpv6_prot, 1); | |
870 | if (err) | |
871 | goto out_unregister_tcp_proto; | |
872 | ||
ba4e58ec | 873 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
874 | if (err) |
875 | goto out_unregister_udp_proto; | |
876 | ||
ba4e58ec GR |
877 | err = proto_register(&rawv6_prot, 1); |
878 | if (err) | |
879 | goto out_unregister_udplite_proto; | |
880 | ||
6d0bfe22 LC |
881 | err = proto_register(&pingv6_prot, 1); |
882 | if (err) | |
883 | goto out_unregister_ping_proto; | |
1da177e4 | 884 | |
1da177e4 LT |
885 | /* We MUST register RAW sockets before we create the ICMP6, |
886 | * IGMP6, or NDISC control sockets. | |
887 | */ | |
7f4e4868 DL |
888 | err = rawv6_init(); |
889 | if (err) | |
890 | goto out_unregister_raw_proto; | |
1da177e4 LT |
891 | |
892 | /* Register the family here so that the init calls below will | |
893 | * be able to create sockets. (?? is this dangerous ??) | |
894 | */ | |
8eb55910 DM |
895 | err = sock_register(&inet6_family_ops); |
896 | if (err) | |
7f4e4868 | 897 | goto out_sock_register_fail; |
1da177e4 | 898 | |
1da177e4 LT |
899 | /* |
900 | * ipngwg API draft makes clear that the correct semantics | |
901 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 902 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
903 | * able to communicate via both network protocols. |
904 | */ | |
905 | ||
81c1c178 DL |
906 | err = register_pernet_subsys(&inet6_net_ops); |
907 | if (err) | |
908 | goto register_pernet_fail; | |
9b0f976f | 909 | err = icmpv6_init(); |
1da177e4 LT |
910 | if (err) |
911 | goto icmp_fail; | |
623d1a1a WC |
912 | err = ip6_mr_init(); |
913 | if (err) | |
914 | goto ipmr_fail; | |
9b0f976f | 915 | err = ndisc_init(); |
1da177e4 LT |
916 | if (err) |
917 | goto ndisc_fail; | |
9b0f976f | 918 | err = igmp6_init(); |
1da177e4 LT |
919 | if (err) |
920 | goto igmp_fail; | |
5f81bd2e CW |
921 | |
922 | ipv6_stub = &ipv6_stub_impl; | |
923 | ||
2cc7d573 HW |
924 | err = ipv6_netfilter_init(); |
925 | if (err) | |
926 | goto netfilter_fail; | |
1da177e4 LT |
927 | /* Create /proc/foo6 entries. */ |
928 | #ifdef CONFIG_PROC_FS | |
929 | err = -ENOMEM; | |
930 | if (raw6_proc_init()) | |
931 | goto proc_raw6_fail; | |
ba4e58ec GR |
932 | if (udplite6_proc_init()) |
933 | goto proc_udplite6_fail; | |
1da177e4 LT |
934 | if (ipv6_misc_proc_init()) |
935 | goto proc_misc6_fail; | |
1da177e4 LT |
936 | if (if6_proc_init()) |
937 | goto proc_if6_fail; | |
938 | #endif | |
e2fddf5e DL |
939 | err = ip6_route_init(); |
940 | if (err) | |
941 | goto ip6_route_fail; | |
2c861cc6 MK |
942 | err = ndisc_late_init(); |
943 | if (err) | |
944 | goto ndisc_late_fail; | |
0a3e78ac DL |
945 | err = ip6_flowlabel_init(); |
946 | if (err) | |
947 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
948 | err = addrconf_init(); |
949 | if (err) | |
950 | goto addrconf_fail; | |
1da177e4 LT |
951 | |
952 | /* Init v6 extension headers. */ | |
248b238d DL |
953 | err = ipv6_exthdrs_init(); |
954 | if (err) | |
955 | goto ipv6_exthdrs_fail; | |
956 | ||
853cbbaa DL |
957 | err = ipv6_frag_init(); |
958 | if (err) | |
959 | goto ipv6_frag_fail; | |
1da177e4 LT |
960 | |
961 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
962 | err = udpv6_init(); |
963 | if (err) | |
964 | goto udpv6_fail; | |
e2ed4052 | 965 | |
7f4e4868 DL |
966 | err = udplitev6_init(); |
967 | if (err) | |
968 | goto udplitev6_fail; | |
969 | ||
a6024562 TH |
970 | err = udpv6_offload_init(); |
971 | if (err) | |
972 | goto udpv6_offload_fail; | |
973 | ||
7f4e4868 DL |
974 | err = tcpv6_init(); |
975 | if (err) | |
976 | goto tcpv6_fail; | |
977 | ||
978 | err = ipv6_packet_init(); | |
979 | if (err) | |
980 | goto ipv6_packet_fail; | |
94911fe3 | 981 | |
6d0bfe22 LC |
982 | err = pingv6_init(); |
983 | if (err) | |
984 | goto pingv6_fail; | |
985 | ||
94911fe3 BT |
986 | #ifdef CONFIG_SYSCTL |
987 | err = ipv6_sysctl_register(); | |
988 | if (err) | |
989 | goto sysctl_fail; | |
990 | #endif | |
1da177e4 LT |
991 | out: |
992 | return err; | |
993 | ||
94911fe3 BT |
994 | #ifdef CONFIG_SYSCTL |
995 | sysctl_fail: | |
eca42aaf | 996 | pingv6_exit(); |
94911fe3 | 997 | #endif |
6d0bfe22 | 998 | pingv6_fail: |
eca42aaf | 999 | ipv6_packet_cleanup(); |
7f4e4868 DL |
1000 | ipv6_packet_fail: |
1001 | tcpv6_exit(); | |
1002 | tcpv6_fail: | |
a6024562 TH |
1003 | udpv6_offload_exit(); |
1004 | udpv6_offload_fail: | |
7f4e4868 DL |
1005 | udplitev6_exit(); |
1006 | udplitev6_fail: | |
1007 | udpv6_exit(); | |
1008 | udpv6_fail: | |
1009 | ipv6_frag_exit(); | |
853cbbaa DL |
1010 | ipv6_frag_fail: |
1011 | ipv6_exthdrs_exit(); | |
248b238d DL |
1012 | ipv6_exthdrs_fail: |
1013 | addrconf_cleanup(); | |
1da177e4 LT |
1014 | addrconf_fail: |
1015 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1016 | ip6_flowlabel_fail: |
2c861cc6 MK |
1017 | ndisc_late_cleanup(); |
1018 | ndisc_late_fail: | |
1da177e4 | 1019 | ip6_route_cleanup(); |
e2fddf5e | 1020 | ip6_route_fail: |
1da177e4 LT |
1021 | #ifdef CONFIG_PROC_FS |
1022 | if6_proc_exit(); | |
1023 | proc_if6_fail: | |
1da177e4 LT |
1024 | ipv6_misc_proc_exit(); |
1025 | proc_misc6_fail: | |
ba4e58ec GR |
1026 | udplite6_proc_exit(); |
1027 | proc_udplite6_fail: | |
1da177e4 LT |
1028 | raw6_proc_exit(); |
1029 | proc_raw6_fail: | |
1030 | #endif | |
2cc7d573 HW |
1031 | ipv6_netfilter_fini(); |
1032 | netfilter_fail: | |
1da177e4 LT |
1033 | igmp6_cleanup(); |
1034 | igmp_fail: | |
1035 | ndisc_cleanup(); | |
1036 | ndisc_fail: | |
623d1a1a WC |
1037 | ip6_mr_cleanup(); |
1038 | ipmr_fail: | |
1da177e4 LT |
1039 | icmpv6_cleanup(); |
1040 | icmp_fail: | |
81c1c178 DL |
1041 | unregister_pernet_subsys(&inet6_net_ops); |
1042 | register_pernet_fail: | |
8eb55910 | 1043 | sock_unregister(PF_INET6); |
e2fddf5e | 1044 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1045 | out_sock_register_fail: |
1046 | rawv6_exit(); | |
6d0bfe22 LC |
1047 | out_unregister_ping_proto: |
1048 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1049 | out_unregister_raw_proto: |
1050 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1051 | out_unregister_udplite_proto: |
1052 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1053 | out_unregister_udp_proto: |
1054 | proto_unregister(&udpv6_prot); | |
1055 | out_unregister_tcp_proto: | |
1056 | proto_unregister(&tcpv6_prot); | |
1057 | goto out; | |
1058 | } | |
1059 | module_init(inet6_init); | |
1060 | ||
1da177e4 | 1061 | MODULE_ALIAS_NETPROTO(PF_INET6); |