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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 | * | |
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 LT |
66 | |
67 | MODULE_AUTHOR("Cast of dozens"); | |
68 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
69 | MODULE_LICENSE("GPL"); | |
70 | ||
f1267347 | 71 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
72 | * build a new socket. |
73 | */ | |
74 | static struct list_head inetsw6[SOCK_MAX]; | |
75 | static DEFINE_SPINLOCK(inetsw6_lock); | |
76 | ||
56d417b1 BH |
77 | struct ipv6_params ipv6_defaults = { |
78 | .disable_ipv6 = 0, | |
79 | .autoconf = 1, | |
80 | }; | |
81 | ||
647c0c70 | 82 | static int disable_ipv6_mod; |
56d417b1 BH |
83 | |
84 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
85 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
86 | ||
87 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
88 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
89 | ||
90 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
91 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 92 | |
1da177e4 LT |
93 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
94 | { | |
95 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
96 | ||
97 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
98 | } | |
99 | ||
3f378b68 EP |
100 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
101 | int kern) | |
1da177e4 LT |
102 | { |
103 | struct inet_sock *inet; | |
104 | struct ipv6_pinfo *np; | |
105 | struct sock *sk; | |
1da177e4 LT |
106 | struct inet_protosw *answer; |
107 | struct proto *answer_prot; | |
108 | unsigned char answer_flags; | |
af1afe86 YH |
109 | int try_loading_module = 0; |
110 | int err; | |
1da177e4 LT |
111 | |
112 | /* Look for the requested type/protocol pair. */ | |
af1afe86 YH |
113 | lookup_protocol: |
114 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 115 | rcu_read_lock(); |
696adfe8 | 116 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 117 | |
696adfe8 | 118 | err = 0; |
1da177e4 LT |
119 | /* Check the non-wild match. */ |
120 | if (protocol == answer->protocol) { | |
121 | if (protocol != IPPROTO_IP) | |
122 | break; | |
123 | } else { | |
124 | /* Check for the two wild cases. */ | |
125 | if (IPPROTO_IP == protocol) { | |
126 | protocol = answer->protocol; | |
127 | break; | |
128 | } | |
129 | if (IPPROTO_IP == answer->protocol) | |
130 | break; | |
131 | } | |
af1afe86 | 132 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
133 | } |
134 | ||
696adfe8 | 135 | if (err) { |
af1afe86 YH |
136 | if (try_loading_module < 2) { |
137 | rcu_read_unlock(); | |
138 | /* | |
139 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
140 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
141 | */ | |
142 | if (++try_loading_module == 1) | |
143 | request_module("net-pf-%d-proto-%d-type-%d", | |
144 | PF_INET6, protocol, sock->type); | |
145 | /* | |
146 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
147 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
148 | */ | |
149 | else | |
150 | request_module("net-pf-%d-proto-%d", | |
151 | PF_INET6, protocol); | |
152 | goto lookup_protocol; | |
153 | } else | |
154 | goto out_rcu_unlock; | |
155 | } | |
156 | ||
157 | err = -EPERM; | |
af31f412 EB |
158 | if (sock->type == SOCK_RAW && !kern && |
159 | !ns_capable(net->user_ns, CAP_NET_RAW)) | |
1da177e4 | 160 | goto out_rcu_unlock; |
1da177e4 LT |
161 | |
162 | sock->ops = answer->ops; | |
1da177e4 | 163 | answer_prot = answer->prot; |
1da177e4 LT |
164 | answer_flags = answer->flags; |
165 | rcu_read_unlock(); | |
166 | ||
63159f29 | 167 | WARN_ON(!answer_prot->slab); |
1da177e4 | 168 | |
af1afe86 | 169 | err = -ENOBUFS; |
11aa9c28 | 170 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot, kern); |
63159f29 | 171 | if (!sk) |
1da177e4 LT |
172 | goto out; |
173 | ||
174 | sock_init_data(sock, sk); | |
175 | ||
af1afe86 | 176 | err = 0; |
1da177e4 | 177 | if (INET_PROTOSW_REUSE & answer_flags) |
4a17fd52 | 178 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
179 | |
180 | inet = inet_sk(sk); | |
469de9b9 | 181 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
182 | |
183 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 184 | inet->inet_num = protocol; |
1da177e4 LT |
185 | if (IPPROTO_RAW == protocol) |
186 | inet->hdrincl = 1; | |
187 | } | |
188 | ||
e6848976 | 189 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
190 | sk->sk_family = PF_INET6; |
191 | sk->sk_protocol = protocol; | |
192 | ||
193 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
194 | ||
195 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
196 | np->hop_limit = -1; | |
f935aa9e | 197 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
198 | np->mc_loop = 1; |
199 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
42240901 | 200 | np->autoflowlabel = ip6_default_np_autolabel(sock_net(sk)); |
9fe516ba | 201 | sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 202 | |
1da177e4 LT |
203 | /* Init the ipv4 part of the socket since we can have sockets |
204 | * using v6 API for ipv4. | |
205 | */ | |
206 | inet->uc_ttl = -1; | |
207 | ||
208 | inet->mc_loop = 1; | |
209 | inet->mc_ttl = 1; | |
210 | inet->mc_index = 0; | |
211 | inet->mc_list = NULL; | |
4c507d28 | 212 | inet->rcv_tos = 0; |
1da177e4 | 213 | |
974eda11 | 214 | if (net->ipv4.sysctl_ip_no_pmtu_disc) |
1da177e4 LT |
215 | inet->pmtudisc = IP_PMTUDISC_DONT; |
216 | else | |
217 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 218 | /* |
e6848976 ACM |
219 | * Increment only the relevant sk_prot->socks debug field, this changes |
220 | * the previous behaviour of incrementing both the equivalent to | |
221 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
222 | * | |
223 | * This allows better debug granularity as we'll know exactly how many | |
224 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
225 | * transport protocol socks. -acme | |
226 | */ | |
227 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 228 | |
c720c7e8 | 229 | if (inet->inet_num) { |
1da177e4 LT |
230 | /* It assumes that any protocol which allows |
231 | * the user to assign a number at socket | |
232 | * creation time automatically shares. | |
233 | */ | |
c720c7e8 | 234 | inet->inet_sport = htons(inet->inet_num); |
1da177e4 LT |
235 | sk->sk_prot->hash(sk); |
236 | } | |
237 | if (sk->sk_prot->init) { | |
af1afe86 YH |
238 | err = sk->sk_prot->init(sk); |
239 | if (err) { | |
1da177e4 LT |
240 | sk_common_release(sk); |
241 | goto out; | |
242 | } | |
243 | } | |
244 | out: | |
af1afe86 | 245 | return err; |
1da177e4 LT |
246 | out_rcu_unlock: |
247 | rcu_read_unlock(); | |
248 | goto out; | |
249 | } | |
250 | ||
251 | ||
252 | /* bind for INET6 API */ | |
253 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
254 | { | |
647c0c70 | 255 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
256 | struct sock *sk = sock->sk; |
257 | struct inet_sock *inet = inet_sk(sk); | |
258 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 259 | struct net *net = sock_net(sk); |
fd683222 | 260 | __be32 v4addr = 0; |
1da177e4 LT |
261 | unsigned short snum; |
262 | int addr_type = 0; | |
263 | int err = 0; | |
264 | ||
265 | /* If the socket has its own bind function then use it. */ | |
266 | if (sk->sk_prot->bind) | |
267 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
268 | ||
269 | if (addr_len < SIN6_LEN_RFC2133) | |
270 | return -EINVAL; | |
5a079c30 MM |
271 | |
272 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 273 | return -EAFNOSUPPORT; |
5a079c30 | 274 | |
1da177e4 LT |
275 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
276 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
277 | return -EINVAL; | |
278 | ||
279 | snum = ntohs(addr->sin6_port); | |
3594698a | 280 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
1da177e4 LT |
281 | return -EACCES; |
282 | ||
283 | lock_sock(sk); | |
284 | ||
285 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 286 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
287 | err = -EINVAL; |
288 | goto out; | |
289 | } | |
290 | ||
291 | /* Check if the address belongs to the host. */ | |
292 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
293 | int chk_addr_ret; |
294 | ||
783ed5a7 VY |
295 | /* Binding to v4-mapped address on a v6-only socket |
296 | * makes no sense | |
297 | */ | |
9fe516ba | 298 | if (sk->sk_ipv6only) { |
783ed5a7 VY |
299 | err = -EINVAL; |
300 | goto out; | |
301 | } | |
63d9950b | 302 | |
a34f0b31 | 303 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 304 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b | 305 | chk_addr_ret = inet_addr_type(net, v4addr); |
49a60158 | 306 | if (!net->ipv4.sysctl_ip_nonlocal_bind && |
63d9950b VY |
307 | !(inet->freebind || inet->transparent) && |
308 | v4addr != htonl(INADDR_ANY) && | |
309 | chk_addr_ret != RTN_LOCAL && | |
310 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
311 | chk_addr_ret != RTN_BROADCAST) { |
312 | err = -EADDRNOTAVAIL; | |
1da177e4 | 313 | goto out; |
ca6982b8 | 314 | } |
1da177e4 LT |
315 | } else { |
316 | if (addr_type != IPV6_ADDR_ANY) { | |
317 | struct net_device *dev = NULL; | |
318 | ||
16ba5e8e | 319 | rcu_read_lock(); |
842df073 | 320 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
321 | if (addr_len >= sizeof(struct sockaddr_in6) && |
322 | addr->sin6_scope_id) { | |
323 | /* Override any existing binding, if another one | |
324 | * is supplied by user. | |
325 | */ | |
326 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
327 | } | |
1ab1457c | 328 | |
1da177e4 LT |
329 | /* Binding to link-local address requires an interface */ |
330 | if (!sk->sk_bound_dev_if) { | |
331 | err = -EINVAL; | |
16ba5e8e | 332 | goto out_unlock; |
1da177e4 | 333 | } |
16ba5e8e | 334 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
335 | if (!dev) { |
336 | err = -ENODEV; | |
16ba5e8e | 337 | goto out_unlock; |
1da177e4 LT |
338 | } |
339 | } | |
340 | ||
341 | /* ipv4 addr of the socket is invalid. Only the | |
342 | * unspecified and mapped address have a v4 equivalent. | |
343 | */ | |
344 | v4addr = LOOPBACK4_IPV6; | |
345 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
35a256fe TH |
346 | if (!net->ipv6.sysctl.ip_nonlocal_bind && |
347 | !(inet->freebind || inet->transparent) && | |
0a513f6a | 348 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 349 | dev, 0)) { |
1da177e4 | 350 | err = -EADDRNOTAVAIL; |
16ba5e8e | 351 | goto out_unlock; |
1da177e4 LT |
352 | } |
353 | } | |
16ba5e8e | 354 | rcu_read_unlock(); |
1da177e4 LT |
355 | } |
356 | } | |
357 | ||
c720c7e8 ED |
358 | inet->inet_rcv_saddr = v4addr; |
359 | inet->inet_saddr = v4addr; | |
1da177e4 | 360 | |
efe4208f | 361 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
1ab1457c | 362 | |
1da177e4 | 363 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 364 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
365 | |
366 | /* Make sure we are allowed to bind here. */ | |
90c337da ED |
367 | if ((snum || !inet->bind_address_no_port) && |
368 | sk->sk_prot->get_port(sk, snum)) { | |
1da177e4 LT |
369 | inet_reset_saddr(sk); |
370 | err = -EADDRINUSE; | |
371 | goto out; | |
372 | } | |
373 | ||
0f8d3c7a | 374 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 375 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a | 376 | if (addr_type != IPV6_ADDR_MAPPED) |
9fe516ba | 377 | sk->sk_ipv6only = 1; |
0f8d3c7a | 378 | } |
1da177e4 LT |
379 | if (snum) |
380 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
381 | inet->inet_sport = htons(inet->inet_num); |
382 | inet->inet_dport = 0; | |
383 | inet->inet_daddr = 0; | |
1da177e4 LT |
384 | out: |
385 | release_sock(sk); | |
386 | return err; | |
16ba5e8e ED |
387 | out_unlock: |
388 | rcu_read_unlock(); | |
389 | goto out; | |
1da177e4 | 390 | } |
7159039a YH |
391 | EXPORT_SYMBOL(inet6_bind); |
392 | ||
1da177e4 LT |
393 | int inet6_release(struct socket *sock) |
394 | { | |
395 | struct sock *sk = sock->sk; | |
396 | ||
63159f29 | 397 | if (!sk) |
1da177e4 LT |
398 | return -EINVAL; |
399 | ||
400 | /* Free mc lists */ | |
401 | ipv6_sock_mc_close(sk); | |
402 | ||
403 | /* Free ac lists */ | |
404 | ipv6_sock_ac_close(sk); | |
405 | ||
406 | return inet_release(sock); | |
407 | } | |
7159039a YH |
408 | EXPORT_SYMBOL(inet6_release); |
409 | ||
7d06b2e0 | 410 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
411 | { |
412 | struct ipv6_pinfo *np = inet6_sk(sk); | |
413 | struct sk_buff *skb; | |
414 | struct ipv6_txoptions *opt; | |
415 | ||
1da177e4 LT |
416 | /* Release rx options */ |
417 | ||
647c0c70 | 418 | skb = xchg(&np->pktoptions, NULL); |
53b24b8f | 419 | if (skb) |
1da177e4 | 420 | kfree_skb(skb); |
4b340ae2 | 421 | |
647c0c70 | 422 | skb = xchg(&np->rxpmtu, NULL); |
53b24b8f | 423 | if (skb) |
4b340ae2 | 424 | kfree_skb(skb); |
1da177e4 LT |
425 | |
426 | /* Free flowlabels */ | |
427 | fl6_free_socklist(sk); | |
428 | ||
429 | /* Free tx options */ | |
430 | ||
45f6fad8 ED |
431 | opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL); |
432 | if (opt) { | |
433 | atomic_sub(opt->tot_len, &sk->sk_omem_alloc); | |
434 | txopt_put(opt); | |
435 | } | |
1da177e4 | 436 | } |
3cf3dc6c ACM |
437 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
438 | ||
1da177e4 LT |
439 | /* |
440 | * This does both peername and sockname. | |
441 | */ | |
1ab1457c | 442 | |
1da177e4 LT |
443 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
444 | int *uaddr_len, int peer) | |
445 | { | |
647c0c70 | 446 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
447 | struct sock *sk = sock->sk; |
448 | struct inet_sock *inet = inet_sk(sk); | |
449 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 450 | |
1da177e4 LT |
451 | sin->sin6_family = AF_INET6; |
452 | sin->sin6_flowinfo = 0; | |
453 | sin->sin6_scope_id = 0; | |
454 | if (peer) { | |
c720c7e8 | 455 | if (!inet->inet_dport) |
1da177e4 LT |
456 | return -ENOTCONN; |
457 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
458 | peer == 1) | |
459 | return -ENOTCONN; | |
c720c7e8 | 460 | sin->sin6_port = inet->inet_dport; |
efe4208f | 461 | sin->sin6_addr = sk->sk_v6_daddr; |
1da177e4 LT |
462 | if (np->sndflow) |
463 | sin->sin6_flowinfo = np->flow_label; | |
464 | } else { | |
efe4208f | 465 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
4e3fd7a0 | 466 | sin->sin6_addr = np->saddr; |
1da177e4 | 467 | else |
efe4208f | 468 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
1da177e4 | 469 | |
c720c7e8 | 470 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 471 | } |
842df073 HFS |
472 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
473 | sk->sk_bound_dev_if); | |
1da177e4 | 474 | *uaddr_len = sizeof(*sin); |
a02cec21 | 475 | return 0; |
1da177e4 | 476 | } |
7159039a YH |
477 | EXPORT_SYMBOL(inet6_getname); |
478 | ||
1da177e4 LT |
479 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
480 | { | |
481 | struct sock *sk = sock->sk; | |
3b1e0a65 | 482 | struct net *net = sock_net(sk); |
1da177e4 | 483 | |
647c0c70 | 484 | switch (cmd) { |
1da177e4 LT |
485 | case SIOCGSTAMP: |
486 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
487 | ||
ae40eb1e ED |
488 | case SIOCGSTAMPNS: |
489 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
490 | ||
1da177e4 LT |
491 | case SIOCADDRT: |
492 | case SIOCDELRT: | |
1ab1457c | 493 | |
a02cec21 | 494 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
495 | |
496 | case SIOCSIFADDR: | |
af284937 | 497 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 498 | case SIOCDIFADDR: |
af284937 | 499 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 500 | case SIOCSIFDSTADDR: |
af284937 | 501 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 502 | default: |
b5e5fa5e CH |
503 | if (!sk->sk_prot->ioctl) |
504 | return -ENOIOCTLCMD; | |
505 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
506 | } |
507 | /*NOTREACHED*/ | |
a02cec21 | 508 | return 0; |
1da177e4 | 509 | } |
7159039a YH |
510 | EXPORT_SYMBOL(inet6_ioctl); |
511 | ||
90ddc4f0 | 512 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
513 | .family = PF_INET6, |
514 | .owner = THIS_MODULE, | |
515 | .release = inet6_release, | |
516 | .bind = inet6_bind, | |
517 | .connect = inet_stream_connect, /* ok */ | |
518 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
519 | .accept = inet_accept, /* ok */ | |
520 | .getname = inet6_getname, | |
521 | .poll = tcp_poll, /* ok */ | |
522 | .ioctl = inet6_ioctl, /* must change */ | |
523 | .listen = inet_listen, /* ok */ | |
524 | .shutdown = inet_shutdown, /* ok */ | |
525 | .setsockopt = sock_common_setsockopt, /* ok */ | |
526 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
527 | .sendmsg = inet_sendmsg, /* ok */ |
528 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 529 | .mmap = sock_no_mmap, |
7ba42910 | 530 | .sendpage = inet_sendpage, |
a0974dd3 | 531 | .splice_read = tcp_splice_read, |
3fdadf7d | 532 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
533 | .compat_setsockopt = compat_sock_common_setsockopt, |
534 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 535 | #endif |
1da177e4 LT |
536 | }; |
537 | ||
90ddc4f0 | 538 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
539 | .family = PF_INET6, |
540 | .owner = THIS_MODULE, | |
541 | .release = inet6_release, | |
542 | .bind = inet6_bind, | |
543 | .connect = inet_dgram_connect, /* ok */ | |
544 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
545 | .accept = sock_no_accept, /* a do nothing */ | |
546 | .getname = inet6_getname, | |
547 | .poll = udp_poll, /* ok */ | |
548 | .ioctl = inet6_ioctl, /* must change */ | |
549 | .listen = sock_no_listen, /* ok */ | |
550 | .shutdown = inet_shutdown, /* ok */ | |
551 | .setsockopt = sock_common_setsockopt, /* ok */ | |
552 | .getsockopt = sock_common_getsockopt, /* ok */ | |
553 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 554 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
555 | .mmap = sock_no_mmap, |
556 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 557 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
558 | .compat_setsockopt = compat_sock_common_setsockopt, |
559 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 560 | #endif |
1da177e4 LT |
561 | }; |
562 | ||
ec1b4cf7 | 563 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
564 | .family = PF_INET6, |
565 | .create = inet6_create, | |
566 | .owner = THIS_MODULE, | |
567 | }; | |
568 | ||
87c3efbf | 569 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
570 | { |
571 | struct list_head *lh; | |
572 | struct inet_protosw *answer; | |
1da177e4 | 573 | struct list_head *last_perm; |
87c3efbf DL |
574 | int protocol = p->protocol; |
575 | int ret; | |
1da177e4 LT |
576 | |
577 | spin_lock_bh(&inetsw6_lock); | |
578 | ||
87c3efbf | 579 | ret = -EINVAL; |
1da177e4 LT |
580 | if (p->type >= SOCK_MAX) |
581 | goto out_illegal; | |
582 | ||
583 | /* If we are trying to override a permanent protocol, bail. */ | |
584 | answer = NULL; | |
87c3efbf | 585 | ret = -EPERM; |
1da177e4 LT |
586 | last_perm = &inetsw6[p->type]; |
587 | list_for_each(lh, &inetsw6[p->type]) { | |
588 | answer = list_entry(lh, struct inet_protosw, list); | |
589 | ||
590 | /* Check only the non-wild match. */ | |
591 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
592 | if (protocol == answer->protocol) | |
593 | break; | |
594 | last_perm = lh; | |
595 | } | |
596 | ||
597 | answer = NULL; | |
598 | } | |
599 | if (answer) | |
600 | goto out_permanent; | |
601 | ||
602 | /* Add the new entry after the last permanent entry if any, so that | |
603 | * the new entry does not override a permanent entry when matched with | |
604 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 605 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
606 | * system automatically returns to the old behavior. |
607 | */ | |
608 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 609 | ret = 0; |
1da177e4 LT |
610 | out: |
611 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 612 | return ret; |
1da177e4 LT |
613 | |
614 | out_permanent: | |
f3213831 | 615 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
616 | goto out; |
617 | ||
618 | out_illegal: | |
f3213831 | 619 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
620 | p->type); |
621 | goto out; | |
622 | } | |
7159039a YH |
623 | EXPORT_SYMBOL(inet6_register_protosw); |
624 | ||
1da177e4 LT |
625 | void |
626 | inet6_unregister_protosw(struct inet_protosw *p) | |
627 | { | |
628 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 629 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
630 | p->protocol); |
631 | } else { | |
632 | spin_lock_bh(&inetsw6_lock); | |
633 | list_del_rcu(&p->list); | |
634 | spin_unlock_bh(&inetsw6_lock); | |
635 | ||
636 | synchronize_net(); | |
637 | } | |
638 | } | |
7159039a YH |
639 | EXPORT_SYMBOL(inet6_unregister_protosw); |
640 | ||
b9750ce1 ACM |
641 | int inet6_sk_rebuild_header(struct sock *sk) |
642 | { | |
b9750ce1 | 643 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 644 | struct dst_entry *dst; |
b9750ce1 ACM |
645 | |
646 | dst = __sk_dst_check(sk, np->dst_cookie); | |
647 | ||
63159f29 | 648 | if (!dst) { |
b9750ce1 | 649 | struct inet_sock *inet = inet_sk(sk); |
20c59de2 | 650 | struct in6_addr *final_p, final; |
4c9483b2 DM |
651 | struct flowi6 fl6; |
652 | ||
653 | memset(&fl6, 0, sizeof(fl6)); | |
654 | fl6.flowi6_proto = sk->sk_protocol; | |
efe4208f | 655 | fl6.daddr = sk->sk_v6_daddr; |
4e3fd7a0 | 656 | fl6.saddr = np->saddr; |
4c9483b2 DM |
657 | fl6.flowlabel = np->flow_label; |
658 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
659 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
660 | fl6.fl6_dport = inet->inet_dport; |
661 | fl6.fl6_sport = inet->inet_sport; | |
4c9483b2 DM |
662 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
663 | ||
45f6fad8 ED |
664 | rcu_read_lock(); |
665 | final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), | |
666 | &final); | |
667 | rcu_read_unlock(); | |
4c9483b2 | 668 | |
0e0d44ab | 669 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
68d0c6d3 | 670 | if (IS_ERR(dst)) { |
b9750ce1 | 671 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
672 | sk->sk_err_soft = -PTR_ERR(dst); |
673 | return PTR_ERR(dst); | |
b9750ce1 ACM |
674 | } |
675 | ||
8e1ef0a9 | 676 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
677 | } |
678 | ||
679 | return 0; | |
680 | } | |
b9750ce1 ACM |
681 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
682 | ||
a224772d ED |
683 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, |
684 | const struct inet6_skb_parm *opt) | |
399c07de | 685 | { |
92113bfd | 686 | const struct ipv6_pinfo *np = inet6_sk(sk); |
399c07de ACM |
687 | |
688 | if (np->rxopt.all) { | |
8b58a398 FW |
689 | if (((opt->flags & IP6SKB_HOPBYHOP) && |
690 | (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) || | |
ac1eabca | 691 | (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) && |
399c07de ACM |
692 | np->rxopt.bits.rxflow) || |
693 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
694 | np->rxopt.bits.osrcrt)) || | |
695 | ((opt->dst1 || opt->dst0) && | |
696 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 697 | return true; |
399c07de | 698 | } |
92113bfd | 699 | return false; |
399c07de | 700 | } |
399c07de ACM |
701 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
702 | ||
7546dd97 | 703 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 704 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 705 | .func = ipv6_rcv, |
22061d80 VY |
706 | }; |
707 | ||
662397fd YH |
708 | static int __init ipv6_packet_init(void) |
709 | { | |
710 | dev_add_pack(&ipv6_packet_type); | |
711 | return 0; | |
712 | } | |
713 | ||
714 | static void ipv6_packet_cleanup(void) | |
715 | { | |
716 | dev_remove_pack(&ipv6_packet_type); | |
717 | } | |
718 | ||
e43291cb DL |
719 | static int __net_init ipv6_init_mibs(struct net *net) |
720 | { | |
827da44c JS |
721 | int i; |
722 | ||
698365fa WC |
723 | net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); |
724 | if (!net->mib.udp_stats_in6) | |
0c7ed677 | 725 | return -ENOMEM; |
698365fa WC |
726 | net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); |
727 | if (!net->mib.udplite_stats_in6) | |
be713a44 | 728 | goto err_udplite_mib; |
698365fa WC |
729 | net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); |
730 | if (!net->mib.ipv6_statistics) | |
9261e537 | 731 | goto err_ip_mib; |
827da44c JS |
732 | |
733 | for_each_possible_cpu(i) { | |
734 | struct ipstats_mib *af_inet6_stats; | |
698365fa | 735 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); |
827da44c | 736 | u64_stats_init(&af_inet6_stats->syncp); |
827da44c JS |
737 | } |
738 | ||
739 | ||
698365fa WC |
740 | net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); |
741 | if (!net->mib.icmpv6_statistics) | |
9261e537 | 742 | goto err_icmp_mib; |
2a24444f ED |
743 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
744 | GFP_KERNEL); | |
745 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 746 | goto err_icmpmsg_mib; |
e43291cb | 747 | return 0; |
be713a44 | 748 | |
9261e537 | 749 | err_icmpmsg_mib: |
698365fa | 750 | free_percpu(net->mib.icmpv6_statistics); |
9261e537 | 751 | err_icmp_mib: |
698365fa | 752 | free_percpu(net->mib.ipv6_statistics); |
9261e537 | 753 | err_ip_mib: |
698365fa | 754 | free_percpu(net->mib.udplite_stats_in6); |
be713a44 | 755 | err_udplite_mib: |
698365fa | 756 | free_percpu(net->mib.udp_stats_in6); |
be713a44 | 757 | return -ENOMEM; |
e43291cb DL |
758 | } |
759 | ||
2c8c1e72 | 760 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 761 | { |
698365fa WC |
762 | free_percpu(net->mib.udp_stats_in6); |
763 | free_percpu(net->mib.udplite_stats_in6); | |
764 | free_percpu(net->mib.ipv6_statistics); | |
765 | free_percpu(net->mib.icmpv6_statistics); | |
2a24444f | 766 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
767 | } |
768 | ||
e7dc8494 | 769 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 770 | { |
0c96d8c5 DL |
771 | int err = 0; |
772 | ||
99bc9c4e | 773 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 774 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
6444f72b | 775 | net->ipv6.sysctl.flowlabel_consistency = 1; |
42240901 | 776 | net->ipv6.sysctl.auto_flowlabels = IP6_DEFAULT_AUTO_FLOW_LABELS; |
1855b7c3 HFS |
777 | net->ipv6.sysctl.idgen_retries = 3; |
778 | net->ipv6.sysctl.idgen_delay = 1 * HZ; | |
be26849b | 779 | net->ipv6.sysctl.flowlabel_state_ranges = 0; |
812918c4 | 780 | atomic_set(&net->ipv6.fib6_sernum, 1); |
e71e0349 | 781 | |
e43291cb DL |
782 | err = ipv6_init_mibs(net); |
783 | if (err) | |
784 | return err; | |
0c96d8c5 DL |
785 | #ifdef CONFIG_PROC_FS |
786 | err = udp6_proc_init(net); | |
787 | if (err) | |
788 | goto out; | |
6f8b13bc DL |
789 | err = tcp6_proc_init(net); |
790 | if (err) | |
791 | goto proc_tcp6_fail; | |
6ab57e7e DL |
792 | err = ac6_proc_init(net); |
793 | if (err) | |
794 | goto proc_ac6_fail; | |
0c96d8c5 DL |
795 | #endif |
796 | return err; | |
6f8b13bc DL |
797 | |
798 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
799 | proc_ac6_fail: |
800 | tcp6_proc_exit(net); | |
6f8b13bc DL |
801 | proc_tcp6_fail: |
802 | udp6_proc_exit(net); | |
e43291cb DL |
803 | out: |
804 | ipv6_cleanup_mibs(net); | |
805 | return err; | |
6f8b13bc | 806 | #endif |
81c1c178 DL |
807 | } |
808 | ||
2c8c1e72 | 809 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 810 | { |
0c96d8c5 DL |
811 | #ifdef CONFIG_PROC_FS |
812 | udp6_proc_exit(net); | |
6f8b13bc | 813 | tcp6_proc_exit(net); |
6ab57e7e | 814 | ac6_proc_exit(net); |
0c96d8c5 | 815 | #endif |
e43291cb | 816 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
817 | } |
818 | ||
819 | static struct pernet_operations inet6_net_ops = { | |
820 | .init = inet6_net_init, | |
821 | .exit = inet6_net_exit, | |
822 | }; | |
823 | ||
5f81bd2e CW |
824 | static const struct ipv6_stub ipv6_stub_impl = { |
825 | .ipv6_sock_mc_join = ipv6_sock_mc_join, | |
826 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, | |
827 | .ipv6_dst_lookup = ip6_dst_lookup, | |
828 | .udpv6_encap_enable = udpv6_encap_enable, | |
f564f45c | 829 | .ndisc_send_na = ndisc_send_na, |
e15a00aa | 830 | .nd_tbl = &nd_tbl, |
5f81bd2e CW |
831 | }; |
832 | ||
1da177e4 LT |
833 | static int __init inet6_init(void) |
834 | { | |
1ab1457c | 835 | struct list_head *r; |
fe7ca2e1 | 836 | int err = 0; |
1da177e4 | 837 | |
b4772ef8 | 838 | sock_skb_cb_check_size(sizeof(struct inet6_skb_parm)); |
ef047f5e | 839 | |
fe7ca2e1 | 840 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 841 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
842 | INIT_LIST_HEAD(r); |
843 | ||
56d417b1 | 844 | if (disable_ipv6_mod) { |
f3213831 | 845 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
846 | goto out; |
847 | } | |
848 | ||
1da177e4 LT |
849 | err = proto_register(&tcpv6_prot, 1); |
850 | if (err) | |
851 | goto out; | |
852 | ||
853 | err = proto_register(&udpv6_prot, 1); | |
854 | if (err) | |
855 | goto out_unregister_tcp_proto; | |
856 | ||
ba4e58ec | 857 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
858 | if (err) |
859 | goto out_unregister_udp_proto; | |
860 | ||
ba4e58ec GR |
861 | err = proto_register(&rawv6_prot, 1); |
862 | if (err) | |
863 | goto out_unregister_udplite_proto; | |
864 | ||
6d0bfe22 LC |
865 | err = proto_register(&pingv6_prot, 1); |
866 | if (err) | |
867 | goto out_unregister_ping_proto; | |
1da177e4 | 868 | |
1da177e4 LT |
869 | /* We MUST register RAW sockets before we create the ICMP6, |
870 | * IGMP6, or NDISC control sockets. | |
871 | */ | |
7f4e4868 DL |
872 | err = rawv6_init(); |
873 | if (err) | |
874 | goto out_unregister_raw_proto; | |
1da177e4 LT |
875 | |
876 | /* Register the family here so that the init calls below will | |
877 | * be able to create sockets. (?? is this dangerous ??) | |
878 | */ | |
8eb55910 DM |
879 | err = sock_register(&inet6_family_ops); |
880 | if (err) | |
7f4e4868 | 881 | goto out_sock_register_fail; |
1da177e4 | 882 | |
1da177e4 LT |
883 | /* |
884 | * ipngwg API draft makes clear that the correct semantics | |
885 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 886 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
887 | * able to communicate via both network protocols. |
888 | */ | |
889 | ||
81c1c178 DL |
890 | err = register_pernet_subsys(&inet6_net_ops); |
891 | if (err) | |
892 | goto register_pernet_fail; | |
9b0f976f | 893 | err = icmpv6_init(); |
1da177e4 LT |
894 | if (err) |
895 | goto icmp_fail; | |
623d1a1a WC |
896 | err = ip6_mr_init(); |
897 | if (err) | |
898 | goto ipmr_fail; | |
9b0f976f | 899 | err = ndisc_init(); |
1da177e4 LT |
900 | if (err) |
901 | goto ndisc_fail; | |
9b0f976f | 902 | err = igmp6_init(); |
1da177e4 LT |
903 | if (err) |
904 | goto igmp_fail; | |
5f81bd2e CW |
905 | |
906 | ipv6_stub = &ipv6_stub_impl; | |
907 | ||
2cc7d573 HW |
908 | err = ipv6_netfilter_init(); |
909 | if (err) | |
910 | goto netfilter_fail; | |
1da177e4 LT |
911 | /* Create /proc/foo6 entries. */ |
912 | #ifdef CONFIG_PROC_FS | |
913 | err = -ENOMEM; | |
914 | if (raw6_proc_init()) | |
915 | goto proc_raw6_fail; | |
ba4e58ec GR |
916 | if (udplite6_proc_init()) |
917 | goto proc_udplite6_fail; | |
1da177e4 LT |
918 | if (ipv6_misc_proc_init()) |
919 | goto proc_misc6_fail; | |
1da177e4 LT |
920 | if (if6_proc_init()) |
921 | goto proc_if6_fail; | |
922 | #endif | |
e2fddf5e DL |
923 | err = ip6_route_init(); |
924 | if (err) | |
925 | goto ip6_route_fail; | |
2c861cc6 MK |
926 | err = ndisc_late_init(); |
927 | if (err) | |
928 | goto ndisc_late_fail; | |
0a3e78ac DL |
929 | err = ip6_flowlabel_init(); |
930 | if (err) | |
931 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
932 | err = addrconf_init(); |
933 | if (err) | |
934 | goto addrconf_fail; | |
1da177e4 LT |
935 | |
936 | /* Init v6 extension headers. */ | |
248b238d DL |
937 | err = ipv6_exthdrs_init(); |
938 | if (err) | |
939 | goto ipv6_exthdrs_fail; | |
940 | ||
853cbbaa DL |
941 | err = ipv6_frag_init(); |
942 | if (err) | |
943 | goto ipv6_frag_fail; | |
1da177e4 LT |
944 | |
945 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
946 | err = udpv6_init(); |
947 | if (err) | |
948 | goto udpv6_fail; | |
e2ed4052 | 949 | |
7f4e4868 DL |
950 | err = udplitev6_init(); |
951 | if (err) | |
952 | goto udplitev6_fail; | |
953 | ||
954 | err = tcpv6_init(); | |
955 | if (err) | |
956 | goto tcpv6_fail; | |
957 | ||
958 | err = ipv6_packet_init(); | |
959 | if (err) | |
960 | goto ipv6_packet_fail; | |
94911fe3 | 961 | |
6d0bfe22 LC |
962 | err = pingv6_init(); |
963 | if (err) | |
964 | goto pingv6_fail; | |
965 | ||
94911fe3 BT |
966 | #ifdef CONFIG_SYSCTL |
967 | err = ipv6_sysctl_register(); | |
968 | if (err) | |
969 | goto sysctl_fail; | |
970 | #endif | |
1da177e4 LT |
971 | out: |
972 | return err; | |
973 | ||
94911fe3 BT |
974 | #ifdef CONFIG_SYSCTL |
975 | sysctl_fail: | |
eca42aaf | 976 | pingv6_exit(); |
94911fe3 | 977 | #endif |
6d0bfe22 | 978 | pingv6_fail: |
eca42aaf | 979 | ipv6_packet_cleanup(); |
7f4e4868 DL |
980 | ipv6_packet_fail: |
981 | tcpv6_exit(); | |
982 | tcpv6_fail: | |
983 | udplitev6_exit(); | |
984 | udplitev6_fail: | |
985 | udpv6_exit(); | |
986 | udpv6_fail: | |
987 | ipv6_frag_exit(); | |
853cbbaa DL |
988 | ipv6_frag_fail: |
989 | ipv6_exthdrs_exit(); | |
248b238d DL |
990 | ipv6_exthdrs_fail: |
991 | addrconf_cleanup(); | |
1da177e4 LT |
992 | addrconf_fail: |
993 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 994 | ip6_flowlabel_fail: |
2c861cc6 MK |
995 | ndisc_late_cleanup(); |
996 | ndisc_late_fail: | |
1da177e4 | 997 | ip6_route_cleanup(); |
e2fddf5e | 998 | ip6_route_fail: |
1da177e4 LT |
999 | #ifdef CONFIG_PROC_FS |
1000 | if6_proc_exit(); | |
1001 | proc_if6_fail: | |
1da177e4 LT |
1002 | ipv6_misc_proc_exit(); |
1003 | proc_misc6_fail: | |
ba4e58ec GR |
1004 | udplite6_proc_exit(); |
1005 | proc_udplite6_fail: | |
1da177e4 LT |
1006 | raw6_proc_exit(); |
1007 | proc_raw6_fail: | |
1008 | #endif | |
2cc7d573 HW |
1009 | ipv6_netfilter_fini(); |
1010 | netfilter_fail: | |
1da177e4 LT |
1011 | igmp6_cleanup(); |
1012 | igmp_fail: | |
1013 | ndisc_cleanup(); | |
1014 | ndisc_fail: | |
623d1a1a WC |
1015 | ip6_mr_cleanup(); |
1016 | ipmr_fail: | |
1da177e4 LT |
1017 | icmpv6_cleanup(); |
1018 | icmp_fail: | |
81c1c178 DL |
1019 | unregister_pernet_subsys(&inet6_net_ops); |
1020 | register_pernet_fail: | |
8eb55910 | 1021 | sock_unregister(PF_INET6); |
e2fddf5e | 1022 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1023 | out_sock_register_fail: |
1024 | rawv6_exit(); | |
6d0bfe22 LC |
1025 | out_unregister_ping_proto: |
1026 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1027 | out_unregister_raw_proto: |
1028 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1029 | out_unregister_udplite_proto: |
1030 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1031 | out_unregister_udp_proto: |
1032 | proto_unregister(&udpv6_prot); | |
1033 | out_unregister_tcp_proto: | |
1034 | proto_unregister(&tcpv6_prot); | |
1035 | goto out; | |
1036 | } | |
1037 | module_init(inet6_init); | |
1038 | ||
1da177e4 | 1039 | MODULE_ALIAS_NETPROTO(PF_INET6); |