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 | * | |
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 | ||
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> |
1da177e4 LT |
52 | #include <net/protocol.h> |
53 | #include <net/inet_common.h> | |
1668e010 | 54 | #include <net/route.h> |
1da177e4 LT |
55 | #include <net/transp_v6.h> |
56 | #include <net/ip6_route.h> | |
57 | #include <net/addrconf.h> | |
58 | #ifdef CONFIG_IPV6_TUNNEL | |
59 | #include <net/ip6_tunnel.h> | |
60 | #endif | |
61 | ||
62 | #include <asm/uaccess.h> | |
7bc570c8 | 63 | #include <linux/mroute6.h> |
1da177e4 LT |
64 | |
65 | MODULE_AUTHOR("Cast of dozens"); | |
66 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
67 | MODULE_LICENSE("GPL"); | |
68 | ||
f1267347 | 69 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
70 | * build a new socket. |
71 | */ | |
72 | static struct list_head inetsw6[SOCK_MAX]; | |
73 | static DEFINE_SPINLOCK(inetsw6_lock); | |
74 | ||
56d417b1 BH |
75 | struct ipv6_params ipv6_defaults = { |
76 | .disable_ipv6 = 0, | |
77 | .autoconf = 1, | |
78 | }; | |
79 | ||
647c0c70 | 80 | static int disable_ipv6_mod; |
56d417b1 BH |
81 | |
82 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
83 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
84 | ||
85 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
86 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
87 | ||
88 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
89 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 90 | |
1da177e4 LT |
91 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
92 | { | |
93 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
94 | ||
95 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
96 | } | |
97 | ||
3f378b68 EP |
98 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
99 | int kern) | |
1da177e4 LT |
100 | { |
101 | struct inet_sock *inet; | |
102 | struct ipv6_pinfo *np; | |
103 | struct sock *sk; | |
1da177e4 LT |
104 | struct inet_protosw *answer; |
105 | struct proto *answer_prot; | |
106 | unsigned char answer_flags; | |
107 | char answer_no_check; | |
af1afe86 YH |
108 | int try_loading_module = 0; |
109 | int err; | |
1da177e4 | 110 | |
b3da2cf3 DM |
111 | if (sock->type != SOCK_RAW && |
112 | sock->type != SOCK_DGRAM && | |
113 | !inet_ehash_secret) | |
114 | build_ehash_secret(); | |
115 | ||
0b15bc29 HFS |
116 | if (protocol < 0 || protocol >= IPPROTO_MAX) |
117 | return -EINVAL; | |
118 | ||
1da177e4 | 119 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
120 | lookup_protocol: |
121 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 122 | rcu_read_lock(); |
696adfe8 | 123 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 124 | |
696adfe8 | 125 | err = 0; |
1da177e4 LT |
126 | /* Check the non-wild match. */ |
127 | if (protocol == answer->protocol) { | |
128 | if (protocol != IPPROTO_IP) | |
129 | break; | |
130 | } else { | |
131 | /* Check for the two wild cases. */ | |
132 | if (IPPROTO_IP == protocol) { | |
133 | protocol = answer->protocol; | |
134 | break; | |
135 | } | |
136 | if (IPPROTO_IP == answer->protocol) | |
137 | break; | |
138 | } | |
af1afe86 | 139 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
140 | } |
141 | ||
696adfe8 | 142 | if (err) { |
af1afe86 YH |
143 | if (try_loading_module < 2) { |
144 | rcu_read_unlock(); | |
145 | /* | |
146 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
147 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
148 | */ | |
149 | if (++try_loading_module == 1) | |
150 | request_module("net-pf-%d-proto-%d-type-%d", | |
151 | PF_INET6, protocol, sock->type); | |
152 | /* | |
153 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
154 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
155 | */ | |
156 | else | |
157 | request_module("net-pf-%d-proto-%d", | |
158 | PF_INET6, protocol); | |
159 | goto lookup_protocol; | |
160 | } else | |
161 | goto out_rcu_unlock; | |
162 | } | |
163 | ||
164 | err = -EPERM; | |
af31f412 EB |
165 | if (sock->type == SOCK_RAW && !kern && |
166 | !ns_capable(net->user_ns, CAP_NET_RAW)) | |
1da177e4 | 167 | goto out_rcu_unlock; |
1da177e4 LT |
168 | |
169 | sock->ops = answer->ops; | |
1da177e4 LT |
170 | answer_prot = answer->prot; |
171 | answer_no_check = answer->no_check; | |
172 | answer_flags = answer->flags; | |
173 | rcu_read_unlock(); | |
174 | ||
547b792c | 175 | WARN_ON(answer_prot->slab == NULL); |
1da177e4 | 176 | |
af1afe86 | 177 | err = -ENOBUFS; |
6257ff21 | 178 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
179 | if (sk == NULL) |
180 | goto out; | |
181 | ||
182 | sock_init_data(sock, sk); | |
183 | ||
af1afe86 | 184 | err = 0; |
1da177e4 LT |
185 | sk->sk_no_check = answer_no_check; |
186 | if (INET_PROTOSW_REUSE & answer_flags) | |
4a17fd52 | 187 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
188 | |
189 | inet = inet_sk(sk); | |
469de9b9 | 190 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
191 | |
192 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 193 | inet->inet_num = protocol; |
1da177e4 LT |
194 | if (IPPROTO_RAW == protocol) |
195 | inet->hdrincl = 1; | |
196 | } | |
197 | ||
e6848976 | 198 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
199 | sk->sk_family = PF_INET6; |
200 | sk->sk_protocol = protocol; | |
201 | ||
202 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
203 | ||
204 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
205 | np->hop_limit = -1; | |
f935aa9e | 206 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
207 | np->mc_loop = 1; |
208 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
2e761e05 | 209 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 210 | |
1da177e4 LT |
211 | /* Init the ipv4 part of the socket since we can have sockets |
212 | * using v6 API for ipv4. | |
213 | */ | |
214 | inet->uc_ttl = -1; | |
215 | ||
216 | inet->mc_loop = 1; | |
217 | inet->mc_ttl = 1; | |
218 | inet->mc_index = 0; | |
219 | inet->mc_list = NULL; | |
4c507d28 | 220 | inet->rcv_tos = 0; |
1da177e4 LT |
221 | |
222 | if (ipv4_config.no_pmtu_disc) | |
223 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
224 | else | |
225 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 226 | /* |
e6848976 ACM |
227 | * Increment only the relevant sk_prot->socks debug field, this changes |
228 | * the previous behaviour of incrementing both the equivalent to | |
229 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
230 | * | |
231 | * This allows better debug granularity as we'll know exactly how many | |
232 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
233 | * transport protocol socks. -acme | |
234 | */ | |
235 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 236 | |
c720c7e8 | 237 | if (inet->inet_num) { |
1da177e4 LT |
238 | /* It assumes that any protocol which allows |
239 | * the user to assign a number at socket | |
240 | * creation time automatically shares. | |
241 | */ | |
c720c7e8 | 242 | inet->inet_sport = htons(inet->inet_num); |
1da177e4 LT |
243 | sk->sk_prot->hash(sk); |
244 | } | |
245 | if (sk->sk_prot->init) { | |
af1afe86 YH |
246 | err = sk->sk_prot->init(sk); |
247 | if (err) { | |
1da177e4 LT |
248 | sk_common_release(sk); |
249 | goto out; | |
250 | } | |
251 | } | |
252 | out: | |
af1afe86 | 253 | return err; |
1da177e4 LT |
254 | out_rcu_unlock: |
255 | rcu_read_unlock(); | |
256 | goto out; | |
257 | } | |
258 | ||
259 | ||
260 | /* bind for INET6 API */ | |
261 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
262 | { | |
647c0c70 | 263 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
264 | struct sock *sk = sock->sk; |
265 | struct inet_sock *inet = inet_sk(sk); | |
266 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 267 | struct net *net = sock_net(sk); |
fd683222 | 268 | __be32 v4addr = 0; |
1da177e4 LT |
269 | unsigned short snum; |
270 | int addr_type = 0; | |
271 | int err = 0; | |
272 | ||
273 | /* If the socket has its own bind function then use it. */ | |
274 | if (sk->sk_prot->bind) | |
275 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
276 | ||
277 | if (addr_len < SIN6_LEN_RFC2133) | |
278 | return -EINVAL; | |
5a079c30 MM |
279 | |
280 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 281 | return -EAFNOSUPPORT; |
5a079c30 | 282 | |
1da177e4 LT |
283 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
284 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
285 | return -EINVAL; | |
286 | ||
287 | snum = ntohs(addr->sin6_port); | |
3594698a | 288 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
1da177e4 LT |
289 | return -EACCES; |
290 | ||
291 | lock_sock(sk); | |
292 | ||
293 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 294 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
295 | err = -EINVAL; |
296 | goto out; | |
297 | } | |
298 | ||
299 | /* Check if the address belongs to the host. */ | |
300 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
301 | int chk_addr_ret; |
302 | ||
783ed5a7 VY |
303 | /* Binding to v4-mapped address on a v6-only socket |
304 | * makes no sense | |
305 | */ | |
306 | if (np->ipv6only) { | |
307 | err = -EINVAL; | |
308 | goto out; | |
309 | } | |
63d9950b | 310 | |
a34f0b31 | 311 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 312 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b VY |
313 | chk_addr_ret = inet_addr_type(net, v4addr); |
314 | if (!sysctl_ip_nonlocal_bind && | |
315 | !(inet->freebind || inet->transparent) && | |
316 | v4addr != htonl(INADDR_ANY) && | |
317 | chk_addr_ret != RTN_LOCAL && | |
318 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
319 | chk_addr_ret != RTN_BROADCAST) { |
320 | err = -EADDRNOTAVAIL; | |
1da177e4 | 321 | goto out; |
ca6982b8 | 322 | } |
1da177e4 LT |
323 | } else { |
324 | if (addr_type != IPV6_ADDR_ANY) { | |
325 | struct net_device *dev = NULL; | |
326 | ||
16ba5e8e | 327 | rcu_read_lock(); |
842df073 | 328 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
329 | if (addr_len >= sizeof(struct sockaddr_in6) && |
330 | addr->sin6_scope_id) { | |
331 | /* Override any existing binding, if another one | |
332 | * is supplied by user. | |
333 | */ | |
334 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
335 | } | |
1ab1457c | 336 | |
1da177e4 LT |
337 | /* Binding to link-local address requires an interface */ |
338 | if (!sk->sk_bound_dev_if) { | |
339 | err = -EINVAL; | |
16ba5e8e | 340 | goto out_unlock; |
1da177e4 | 341 | } |
16ba5e8e | 342 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
343 | if (!dev) { |
344 | err = -ENODEV; | |
16ba5e8e | 345 | goto out_unlock; |
1da177e4 LT |
346 | } |
347 | } | |
348 | ||
349 | /* ipv4 addr of the socket is invalid. Only the | |
350 | * unspecified and mapped address have a v4 equivalent. | |
351 | */ | |
352 | v4addr = LOOPBACK4_IPV6; | |
353 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
f74024d9 | 354 | if (!(inet->freebind || inet->transparent) && |
0a513f6a | 355 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 356 | dev, 0)) { |
1da177e4 | 357 | err = -EADDRNOTAVAIL; |
16ba5e8e | 358 | goto out_unlock; |
1da177e4 LT |
359 | } |
360 | } | |
16ba5e8e | 361 | rcu_read_unlock(); |
1da177e4 LT |
362 | } |
363 | } | |
364 | ||
c720c7e8 ED |
365 | inet->inet_rcv_saddr = v4addr; |
366 | inet->inet_saddr = v4addr; | |
1da177e4 | 367 | |
4e3fd7a0 | 368 | np->rcv_saddr = addr->sin6_addr; |
1ab1457c | 369 | |
1da177e4 | 370 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 371 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
372 | |
373 | /* Make sure we are allowed to bind here. */ | |
374 | if (sk->sk_prot->get_port(sk, snum)) { | |
375 | inet_reset_saddr(sk); | |
376 | err = -EADDRINUSE; | |
377 | goto out; | |
378 | } | |
379 | ||
0f8d3c7a | 380 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 381 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a VY |
382 | if (addr_type != IPV6_ADDR_MAPPED) |
383 | np->ipv6only = 1; | |
384 | } | |
1da177e4 LT |
385 | if (snum) |
386 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
387 | inet->inet_sport = htons(inet->inet_num); |
388 | inet->inet_dport = 0; | |
389 | inet->inet_daddr = 0; | |
1da177e4 LT |
390 | out: |
391 | release_sock(sk); | |
392 | return err; | |
16ba5e8e ED |
393 | out_unlock: |
394 | rcu_read_unlock(); | |
395 | goto out; | |
1da177e4 | 396 | } |
7159039a YH |
397 | EXPORT_SYMBOL(inet6_bind); |
398 | ||
1da177e4 LT |
399 | int inet6_release(struct socket *sock) |
400 | { | |
401 | struct sock *sk = sock->sk; | |
402 | ||
403 | if (sk == NULL) | |
404 | return -EINVAL; | |
405 | ||
406 | /* Free mc lists */ | |
407 | ipv6_sock_mc_close(sk); | |
408 | ||
409 | /* Free ac lists */ | |
410 | ipv6_sock_ac_close(sk); | |
411 | ||
412 | return inet_release(sock); | |
413 | } | |
7159039a YH |
414 | EXPORT_SYMBOL(inet6_release); |
415 | ||
7d06b2e0 | 416 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
417 | { |
418 | struct ipv6_pinfo *np = inet6_sk(sk); | |
419 | struct sk_buff *skb; | |
420 | struct ipv6_txoptions *opt; | |
421 | ||
1da177e4 LT |
422 | /* Release rx options */ |
423 | ||
647c0c70 EZ |
424 | skb = xchg(&np->pktoptions, NULL); |
425 | if (skb != NULL) | |
1da177e4 | 426 | kfree_skb(skb); |
4b340ae2 | 427 | |
647c0c70 EZ |
428 | skb = xchg(&np->rxpmtu, NULL); |
429 | if (skb != NULL) | |
4b340ae2 | 430 | kfree_skb(skb); |
1da177e4 LT |
431 | |
432 | /* Free flowlabels */ | |
433 | fl6_free_socklist(sk); | |
434 | ||
435 | /* Free tx options */ | |
436 | ||
647c0c70 EZ |
437 | opt = xchg(&np->opt, NULL); |
438 | if (opt != NULL) | |
1da177e4 | 439 | sock_kfree_s(sk, opt, opt->tot_len); |
1da177e4 | 440 | } |
3cf3dc6c ACM |
441 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
442 | ||
1da177e4 LT |
443 | /* |
444 | * This does both peername and sockname. | |
445 | */ | |
1ab1457c | 446 | |
1da177e4 LT |
447 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
448 | int *uaddr_len, int peer) | |
449 | { | |
647c0c70 | 450 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
451 | struct sock *sk = sock->sk; |
452 | struct inet_sock *inet = inet_sk(sk); | |
453 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 454 | |
1da177e4 LT |
455 | sin->sin6_family = AF_INET6; |
456 | sin->sin6_flowinfo = 0; | |
457 | sin->sin6_scope_id = 0; | |
458 | if (peer) { | |
c720c7e8 | 459 | if (!inet->inet_dport) |
1da177e4 LT |
460 | return -ENOTCONN; |
461 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
462 | peer == 1) | |
463 | return -ENOTCONN; | |
c720c7e8 | 464 | sin->sin6_port = inet->inet_dport; |
4e3fd7a0 | 465 | sin->sin6_addr = np->daddr; |
1da177e4 LT |
466 | if (np->sndflow) |
467 | sin->sin6_flowinfo = np->flow_label; | |
468 | } else { | |
469 | if (ipv6_addr_any(&np->rcv_saddr)) | |
4e3fd7a0 | 470 | sin->sin6_addr = np->saddr; |
1da177e4 | 471 | else |
4e3fd7a0 | 472 | sin->sin6_addr = np->rcv_saddr; |
1da177e4 | 473 | |
c720c7e8 | 474 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 475 | } |
842df073 HFS |
476 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
477 | sk->sk_bound_dev_if); | |
1da177e4 | 478 | *uaddr_len = sizeof(*sin); |
a02cec21 | 479 | return 0; |
1da177e4 | 480 | } |
7159039a YH |
481 | EXPORT_SYMBOL(inet6_getname); |
482 | ||
1da177e4 LT |
483 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
484 | { | |
485 | struct sock *sk = sock->sk; | |
3b1e0a65 | 486 | struct net *net = sock_net(sk); |
1da177e4 | 487 | |
647c0c70 | 488 | switch (cmd) { |
1da177e4 LT |
489 | case SIOCGSTAMP: |
490 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
491 | ||
ae40eb1e ED |
492 | case SIOCGSTAMPNS: |
493 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
494 | ||
1da177e4 LT |
495 | case SIOCADDRT: |
496 | case SIOCDELRT: | |
1ab1457c | 497 | |
a02cec21 | 498 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
499 | |
500 | case SIOCSIFADDR: | |
af284937 | 501 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 502 | case SIOCDIFADDR: |
af284937 | 503 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 504 | case SIOCSIFDSTADDR: |
af284937 | 505 | return addrconf_set_dstaddr(net, (void __user *) arg); |
1da177e4 | 506 | default: |
b5e5fa5e CH |
507 | if (!sk->sk_prot->ioctl) |
508 | return -ENOIOCTLCMD; | |
509 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
510 | } |
511 | /*NOTREACHED*/ | |
a02cec21 | 512 | return 0; |
1da177e4 | 513 | } |
7159039a YH |
514 | EXPORT_SYMBOL(inet6_ioctl); |
515 | ||
90ddc4f0 | 516 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
517 | .family = PF_INET6, |
518 | .owner = THIS_MODULE, | |
519 | .release = inet6_release, | |
520 | .bind = inet6_bind, | |
521 | .connect = inet_stream_connect, /* ok */ | |
522 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
523 | .accept = inet_accept, /* ok */ | |
524 | .getname = inet6_getname, | |
525 | .poll = tcp_poll, /* ok */ | |
526 | .ioctl = inet6_ioctl, /* must change */ | |
527 | .listen = inet_listen, /* ok */ | |
528 | .shutdown = inet_shutdown, /* ok */ | |
529 | .setsockopt = sock_common_setsockopt, /* ok */ | |
530 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
531 | .sendmsg = inet_sendmsg, /* ok */ |
532 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 533 | .mmap = sock_no_mmap, |
7ba42910 | 534 | .sendpage = inet_sendpage, |
a0974dd3 | 535 | .splice_read = tcp_splice_read, |
3fdadf7d | 536 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
537 | .compat_setsockopt = compat_sock_common_setsockopt, |
538 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 539 | #endif |
1da177e4 LT |
540 | }; |
541 | ||
90ddc4f0 | 542 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
543 | .family = PF_INET6, |
544 | .owner = THIS_MODULE, | |
545 | .release = inet6_release, | |
546 | .bind = inet6_bind, | |
547 | .connect = inet_dgram_connect, /* ok */ | |
548 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
549 | .accept = sock_no_accept, /* a do nothing */ | |
550 | .getname = inet6_getname, | |
551 | .poll = udp_poll, /* ok */ | |
552 | .ioctl = inet6_ioctl, /* must change */ | |
553 | .listen = sock_no_listen, /* ok */ | |
554 | .shutdown = inet_shutdown, /* ok */ | |
555 | .setsockopt = sock_common_setsockopt, /* ok */ | |
556 | .getsockopt = sock_common_getsockopt, /* ok */ | |
557 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 558 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
559 | .mmap = sock_no_mmap, |
560 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 561 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
562 | .compat_setsockopt = compat_sock_common_setsockopt, |
563 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 564 | #endif |
1da177e4 LT |
565 | }; |
566 | ||
ec1b4cf7 | 567 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
568 | .family = PF_INET6, |
569 | .create = inet6_create, | |
570 | .owner = THIS_MODULE, | |
571 | }; | |
572 | ||
87c3efbf | 573 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
574 | { |
575 | struct list_head *lh; | |
576 | struct inet_protosw *answer; | |
1da177e4 | 577 | struct list_head *last_perm; |
87c3efbf DL |
578 | int protocol = p->protocol; |
579 | int ret; | |
1da177e4 LT |
580 | |
581 | spin_lock_bh(&inetsw6_lock); | |
582 | ||
87c3efbf | 583 | ret = -EINVAL; |
1da177e4 LT |
584 | if (p->type >= SOCK_MAX) |
585 | goto out_illegal; | |
586 | ||
587 | /* If we are trying to override a permanent protocol, bail. */ | |
588 | answer = NULL; | |
87c3efbf | 589 | ret = -EPERM; |
1da177e4 LT |
590 | last_perm = &inetsw6[p->type]; |
591 | list_for_each(lh, &inetsw6[p->type]) { | |
592 | answer = list_entry(lh, struct inet_protosw, list); | |
593 | ||
594 | /* Check only the non-wild match. */ | |
595 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
596 | if (protocol == answer->protocol) | |
597 | break; | |
598 | last_perm = lh; | |
599 | } | |
600 | ||
601 | answer = NULL; | |
602 | } | |
603 | if (answer) | |
604 | goto out_permanent; | |
605 | ||
606 | /* Add the new entry after the last permanent entry if any, so that | |
607 | * the new entry does not override a permanent entry when matched with | |
608 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 609 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
610 | * system automatically returns to the old behavior. |
611 | */ | |
612 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 613 | ret = 0; |
1da177e4 LT |
614 | out: |
615 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 616 | return ret; |
1da177e4 LT |
617 | |
618 | out_permanent: | |
f3213831 | 619 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
620 | goto out; |
621 | ||
622 | out_illegal: | |
f3213831 | 623 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
624 | p->type); |
625 | goto out; | |
626 | } | |
7159039a YH |
627 | EXPORT_SYMBOL(inet6_register_protosw); |
628 | ||
1da177e4 LT |
629 | void |
630 | inet6_unregister_protosw(struct inet_protosw *p) | |
631 | { | |
632 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 633 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
634 | p->protocol); |
635 | } else { | |
636 | spin_lock_bh(&inetsw6_lock); | |
637 | list_del_rcu(&p->list); | |
638 | spin_unlock_bh(&inetsw6_lock); | |
639 | ||
640 | synchronize_net(); | |
641 | } | |
642 | } | |
7159039a YH |
643 | EXPORT_SYMBOL(inet6_unregister_protosw); |
644 | ||
b9750ce1 ACM |
645 | int inet6_sk_rebuild_header(struct sock *sk) |
646 | { | |
b9750ce1 | 647 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 648 | struct dst_entry *dst; |
b9750ce1 ACM |
649 | |
650 | dst = __sk_dst_check(sk, np->dst_cookie); | |
651 | ||
652 | if (dst == NULL) { | |
653 | struct inet_sock *inet = inet_sk(sk); | |
20c59de2 | 654 | struct in6_addr *final_p, final; |
4c9483b2 DM |
655 | struct flowi6 fl6; |
656 | ||
657 | memset(&fl6, 0, sizeof(fl6)); | |
658 | fl6.flowi6_proto = sk->sk_protocol; | |
4e3fd7a0 AD |
659 | fl6.daddr = np->daddr; |
660 | fl6.saddr = np->saddr; | |
4c9483b2 DM |
661 | fl6.flowlabel = np->flow_label; |
662 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
663 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
664 | fl6.fl6_dport = inet->inet_dport; |
665 | fl6.fl6_sport = inet->inet_sport; | |
4c9483b2 DM |
666 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
667 | ||
668 | final_p = fl6_update_dst(&fl6, np->opt, &final); | |
669 | ||
670 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); | |
68d0c6d3 | 671 | if (IS_ERR(dst)) { |
b9750ce1 | 672 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
673 | sk->sk_err_soft = -PTR_ERR(dst); |
674 | return PTR_ERR(dst); | |
b9750ce1 ACM |
675 | } |
676 | ||
8e1ef0a9 | 677 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
678 | } |
679 | ||
680 | return 0; | |
681 | } | |
b9750ce1 ACM |
682 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
683 | ||
92113bfd | 684 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb) |
399c07de | 685 | { |
92113bfd ED |
686 | const struct ipv6_pinfo *np = inet6_sk(sk); |
687 | const struct inet6_skb_parm *opt = IP6CB(skb); | |
399c07de ACM |
688 | |
689 | if (np->rxopt.all) { | |
690 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
691 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
692 | ((IPV6_FLOWINFO_MASK & |
693 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
694 | np->rxopt.bits.rxflow) || |
695 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
696 | np->rxopt.bits.osrcrt)) || | |
697 | ((opt->dst1 || opt->dst0) && | |
698 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 699 | return true; |
399c07de | 700 | } |
92113bfd | 701 | return false; |
399c07de | 702 | } |
399c07de ACM |
703 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
704 | ||
7546dd97 | 705 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 706 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 707 | .func = ipv6_rcv, |
22061d80 VY |
708 | }; |
709 | ||
662397fd YH |
710 | static int __init ipv6_packet_init(void) |
711 | { | |
712 | dev_add_pack(&ipv6_packet_type); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | static void ipv6_packet_cleanup(void) | |
717 | { | |
718 | dev_remove_pack(&ipv6_packet_type); | |
719 | } | |
720 | ||
e43291cb DL |
721 | static int __net_init ipv6_init_mibs(struct net *net) |
722 | { | |
7d720c3e | 723 | if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6, |
1823e4c8 ED |
724 | sizeof(struct udp_mib), |
725 | __alignof__(struct udp_mib)) < 0) | |
0c7ed677 | 726 | return -ENOMEM; |
7d720c3e | 727 | if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6, |
1823e4c8 ED |
728 | sizeof(struct udp_mib), |
729 | __alignof__(struct udp_mib)) < 0) | |
be713a44 | 730 | goto err_udplite_mib; |
7d720c3e | 731 | if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics, |
1823e4c8 ED |
732 | sizeof(struct ipstats_mib), |
733 | __alignof__(struct ipstats_mib)) < 0) | |
9261e537 | 734 | goto err_ip_mib; |
7d720c3e | 735 | if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics, |
1823e4c8 ED |
736 | sizeof(struct icmpv6_mib), |
737 | __alignof__(struct icmpv6_mib)) < 0) | |
9261e537 | 738 | goto err_icmp_mib; |
2a24444f ED |
739 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
740 | GFP_KERNEL); | |
741 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 742 | goto err_icmpmsg_mib; |
e43291cb | 743 | return 0; |
be713a44 | 744 | |
9261e537 | 745 | err_icmpmsg_mib: |
7d720c3e | 746 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
9261e537 | 747 | err_icmp_mib: |
7d720c3e | 748 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
9261e537 | 749 | err_ip_mib: |
7d720c3e | 750 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
be713a44 | 751 | err_udplite_mib: |
7d720c3e | 752 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
be713a44 | 753 | return -ENOMEM; |
e43291cb DL |
754 | } |
755 | ||
2c8c1e72 | 756 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 757 | { |
7d720c3e TH |
758 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
759 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); | |
760 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); | |
761 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); | |
2a24444f | 762 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
763 | } |
764 | ||
e7dc8494 | 765 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 766 | { |
0c96d8c5 DL |
767 | int err = 0; |
768 | ||
99bc9c4e | 769 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 770 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 771 | |
e43291cb DL |
772 | err = ipv6_init_mibs(net); |
773 | if (err) | |
774 | return err; | |
0c96d8c5 DL |
775 | #ifdef CONFIG_PROC_FS |
776 | err = udp6_proc_init(net); | |
777 | if (err) | |
778 | goto out; | |
6f8b13bc DL |
779 | err = tcp6_proc_init(net); |
780 | if (err) | |
781 | goto proc_tcp6_fail; | |
6ab57e7e DL |
782 | err = ac6_proc_init(net); |
783 | if (err) | |
784 | goto proc_ac6_fail; | |
0c96d8c5 DL |
785 | #endif |
786 | return err; | |
6f8b13bc DL |
787 | |
788 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
789 | proc_ac6_fail: |
790 | tcp6_proc_exit(net); | |
6f8b13bc DL |
791 | proc_tcp6_fail: |
792 | udp6_proc_exit(net); | |
e43291cb DL |
793 | out: |
794 | ipv6_cleanup_mibs(net); | |
795 | return err; | |
6f8b13bc | 796 | #endif |
81c1c178 DL |
797 | } |
798 | ||
2c8c1e72 | 799 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 800 | { |
0c96d8c5 DL |
801 | #ifdef CONFIG_PROC_FS |
802 | udp6_proc_exit(net); | |
6f8b13bc | 803 | tcp6_proc_exit(net); |
6ab57e7e | 804 | ac6_proc_exit(net); |
0c96d8c5 | 805 | #endif |
e43291cb | 806 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
807 | } |
808 | ||
809 | static struct pernet_operations inet6_net_ops = { | |
810 | .init = inet6_net_init, | |
811 | .exit = inet6_net_exit, | |
812 | }; | |
813 | ||
1da177e4 LT |
814 | static int __init inet6_init(void) |
815 | { | |
1ab1457c | 816 | struct list_head *r; |
fe7ca2e1 | 817 | int err = 0; |
1da177e4 | 818 | |
ba96bcbc | 819 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb)); |
ef047f5e | 820 | |
fe7ca2e1 | 821 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 822 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
823 | INIT_LIST_HEAD(r); |
824 | ||
56d417b1 | 825 | if (disable_ipv6_mod) { |
f3213831 | 826 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
827 | goto out; |
828 | } | |
829 | ||
1da177e4 LT |
830 | err = proto_register(&tcpv6_prot, 1); |
831 | if (err) | |
832 | goto out; | |
833 | ||
834 | err = proto_register(&udpv6_prot, 1); | |
835 | if (err) | |
836 | goto out_unregister_tcp_proto; | |
837 | ||
ba4e58ec | 838 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
839 | if (err) |
840 | goto out_unregister_udp_proto; | |
841 | ||
ba4e58ec GR |
842 | err = proto_register(&rawv6_prot, 1); |
843 | if (err) | |
844 | goto out_unregister_udplite_proto; | |
845 | ||
1da177e4 | 846 | |
1da177e4 LT |
847 | /* We MUST register RAW sockets before we create the ICMP6, |
848 | * IGMP6, or NDISC control sockets. | |
849 | */ | |
7f4e4868 DL |
850 | err = rawv6_init(); |
851 | if (err) | |
852 | goto out_unregister_raw_proto; | |
1da177e4 LT |
853 | |
854 | /* Register the family here so that the init calls below will | |
855 | * be able to create sockets. (?? is this dangerous ??) | |
856 | */ | |
8eb55910 DM |
857 | err = sock_register(&inet6_family_ops); |
858 | if (err) | |
7f4e4868 | 859 | goto out_sock_register_fail; |
1da177e4 | 860 | |
3dc43e3e GC |
861 | tcpv6_prot.sysctl_mem = init_net.ipv4.sysctl_tcp_mem; |
862 | ||
1da177e4 LT |
863 | /* |
864 | * ipngwg API draft makes clear that the correct semantics | |
865 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 866 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
867 | * able to communicate via both network protocols. |
868 | */ | |
869 | ||
81c1c178 DL |
870 | err = register_pernet_subsys(&inet6_net_ops); |
871 | if (err) | |
872 | goto register_pernet_fail; | |
9b0f976f | 873 | err = icmpv6_init(); |
1da177e4 LT |
874 | if (err) |
875 | goto icmp_fail; | |
623d1a1a WC |
876 | err = ip6_mr_init(); |
877 | if (err) | |
878 | goto ipmr_fail; | |
9b0f976f | 879 | err = ndisc_init(); |
1da177e4 LT |
880 | if (err) |
881 | goto ndisc_fail; | |
9b0f976f | 882 | err = igmp6_init(); |
1da177e4 LT |
883 | if (err) |
884 | goto igmp_fail; | |
2cc7d573 HW |
885 | err = ipv6_netfilter_init(); |
886 | if (err) | |
887 | goto netfilter_fail; | |
1da177e4 LT |
888 | /* Create /proc/foo6 entries. */ |
889 | #ifdef CONFIG_PROC_FS | |
890 | err = -ENOMEM; | |
891 | if (raw6_proc_init()) | |
892 | goto proc_raw6_fail; | |
ba4e58ec GR |
893 | if (udplite6_proc_init()) |
894 | goto proc_udplite6_fail; | |
1da177e4 LT |
895 | if (ipv6_misc_proc_init()) |
896 | goto proc_misc6_fail; | |
1da177e4 LT |
897 | if (if6_proc_init()) |
898 | goto proc_if6_fail; | |
899 | #endif | |
e2fddf5e DL |
900 | err = ip6_route_init(); |
901 | if (err) | |
902 | goto ip6_route_fail; | |
0a3e78ac DL |
903 | err = ip6_flowlabel_init(); |
904 | if (err) | |
905 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
906 | err = addrconf_init(); |
907 | if (err) | |
908 | goto addrconf_fail; | |
1da177e4 LT |
909 | |
910 | /* Init v6 extension headers. */ | |
248b238d DL |
911 | err = ipv6_exthdrs_init(); |
912 | if (err) | |
913 | goto ipv6_exthdrs_fail; | |
914 | ||
853cbbaa DL |
915 | err = ipv6_frag_init(); |
916 | if (err) | |
917 | goto ipv6_frag_fail; | |
1da177e4 LT |
918 | |
919 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
920 | err = udpv6_init(); |
921 | if (err) | |
922 | goto udpv6_fail; | |
e2ed4052 | 923 | |
7f4e4868 DL |
924 | err = udplitev6_init(); |
925 | if (err) | |
926 | goto udplitev6_fail; | |
927 | ||
928 | err = tcpv6_init(); | |
929 | if (err) | |
930 | goto tcpv6_fail; | |
931 | ||
932 | err = ipv6_packet_init(); | |
933 | if (err) | |
934 | goto ipv6_packet_fail; | |
94911fe3 BT |
935 | |
936 | #ifdef CONFIG_SYSCTL | |
937 | err = ipv6_sysctl_register(); | |
938 | if (err) | |
939 | goto sysctl_fail; | |
940 | #endif | |
1da177e4 LT |
941 | out: |
942 | return err; | |
943 | ||
94911fe3 BT |
944 | #ifdef CONFIG_SYSCTL |
945 | sysctl_fail: | |
946 | ipv6_packet_cleanup(); | |
947 | #endif | |
7f4e4868 DL |
948 | ipv6_packet_fail: |
949 | tcpv6_exit(); | |
950 | tcpv6_fail: | |
951 | udplitev6_exit(); | |
952 | udplitev6_fail: | |
953 | udpv6_exit(); | |
954 | udpv6_fail: | |
955 | ipv6_frag_exit(); | |
853cbbaa DL |
956 | ipv6_frag_fail: |
957 | ipv6_exthdrs_exit(); | |
248b238d DL |
958 | ipv6_exthdrs_fail: |
959 | addrconf_cleanup(); | |
1da177e4 LT |
960 | addrconf_fail: |
961 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 962 | ip6_flowlabel_fail: |
1da177e4 | 963 | ip6_route_cleanup(); |
e2fddf5e | 964 | ip6_route_fail: |
1da177e4 LT |
965 | #ifdef CONFIG_PROC_FS |
966 | if6_proc_exit(); | |
967 | proc_if6_fail: | |
1da177e4 LT |
968 | ipv6_misc_proc_exit(); |
969 | proc_misc6_fail: | |
ba4e58ec GR |
970 | udplite6_proc_exit(); |
971 | proc_udplite6_fail: | |
1da177e4 LT |
972 | raw6_proc_exit(); |
973 | proc_raw6_fail: | |
974 | #endif | |
2cc7d573 HW |
975 | ipv6_netfilter_fini(); |
976 | netfilter_fail: | |
1da177e4 LT |
977 | igmp6_cleanup(); |
978 | igmp_fail: | |
979 | ndisc_cleanup(); | |
980 | ndisc_fail: | |
623d1a1a WC |
981 | ip6_mr_cleanup(); |
982 | ipmr_fail: | |
1da177e4 LT |
983 | icmpv6_cleanup(); |
984 | icmp_fail: | |
81c1c178 DL |
985 | unregister_pernet_subsys(&inet6_net_ops); |
986 | register_pernet_fail: | |
8eb55910 | 987 | sock_unregister(PF_INET6); |
e2fddf5e | 988 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
989 | out_sock_register_fail: |
990 | rawv6_exit(); | |
1da177e4 LT |
991 | out_unregister_raw_proto: |
992 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
993 | out_unregister_udplite_proto: |
994 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
995 | out_unregister_udp_proto: |
996 | proto_unregister(&udpv6_prot); | |
997 | out_unregister_tcp_proto: | |
998 | proto_unregister(&tcpv6_prot); | |
999 | goto out; | |
1000 | } | |
1001 | module_init(inet6_init); | |
1002 | ||
1003 | static void __exit inet6_exit(void) | |
1004 | { | |
56d417b1 | 1005 | if (disable_ipv6_mod) |
ff8cf9a9 JD |
1006 | return; |
1007 | ||
1da177e4 LT |
1008 | /* First of all disallow new sockets creation. */ |
1009 | sock_unregister(PF_INET6); | |
c127ea2c TG |
1010 | /* Disallow any further netlink messages */ |
1011 | rtnl_unregister_all(PF_INET6); | |
ca17c233 | 1012 | |
7f4e4868 DL |
1013 | udpv6_exit(); |
1014 | udplitev6_exit(); | |
1015 | tcpv6_exit(); | |
1016 | ||
ca17c233 JJ |
1017 | /* Cleanup code parts. */ |
1018 | ipv6_packet_cleanup(); | |
853cbbaa | 1019 | ipv6_frag_exit(); |
248b238d | 1020 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1021 | addrconf_cleanup(); |
1022 | ip6_flowlabel_cleanup(); | |
1023 | ip6_route_cleanup(); | |
1da177e4 | 1024 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1025 | |
1026 | /* Cleanup code parts. */ | |
1da177e4 | 1027 | if6_proc_exit(); |
1ab1457c | 1028 | ipv6_misc_proc_exit(); |
1ab1457c | 1029 | udplite6_proc_exit(); |
1ab1457c | 1030 | raw6_proc_exit(); |
2c8d7ca0 | 1031 | #endif |
2cc7d573 | 1032 | ipv6_netfilter_fini(); |
ca17c233 | 1033 | igmp6_cleanup(); |
1da177e4 | 1034 | ndisc_cleanup(); |
623d1a1a | 1035 | ip6_mr_cleanup(); |
1da177e4 | 1036 | icmpv6_cleanup(); |
7f4e4868 | 1037 | rawv6_exit(); |
94911fe3 | 1038 | |
81c1c178 | 1039 | unregister_pernet_subsys(&inet6_net_ops); |
1da177e4 | 1040 | proto_unregister(&rawv6_prot); |
ca17c233 | 1041 | proto_unregister(&udplitev6_prot); |
1da177e4 LT |
1042 | proto_unregister(&udpv6_prot); |
1043 | proto_unregister(&tcpv6_prot); | |
1f2ccd00 JDB |
1044 | |
1045 | rcu_barrier(); /* Wait for completion of call_rcu()'s */ | |
1da177e4 LT |
1046 | } |
1047 | module_exit(inet6_exit); | |
1048 | ||
1049 | MODULE_ALIAS_NETPROTO(PF_INET6); |