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> |
6fa3eb70 | 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> | |
59 | #ifdef CONFIG_IPV6_TUNNEL | |
60 | #include <net/ip6_tunnel.h> | |
61 | #endif | |
62 | ||
63 | #include <asm/uaccess.h> | |
7bc570c8 | 64 | #include <linux/mroute6.h> |
1da177e4 | 65 | |
6fa3eb70 S |
66 | #ifdef CONFIG_ANDROID_PARANOID_NETWORK |
67 | #include <linux/android_aid.h> | |
68 | ||
69 | static inline int current_has_network(void) | |
70 | { | |
71 | return in_egroup_p(AID_INET) || capable(CAP_NET_RAW); | |
72 | } | |
73 | #else | |
74 | static inline int current_has_network(void) | |
75 | { | |
76 | return 1; | |
77 | } | |
78 | #endif | |
79 | ||
1da177e4 LT |
80 | MODULE_AUTHOR("Cast of dozens"); |
81 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); | |
82 | MODULE_LICENSE("GPL"); | |
83 | ||
f1267347 | 84 | /* The inetsw6 table contains everything that inet6_create needs to |
1da177e4 LT |
85 | * build a new socket. |
86 | */ | |
87 | static struct list_head inetsw6[SOCK_MAX]; | |
88 | static DEFINE_SPINLOCK(inetsw6_lock); | |
89 | ||
56d417b1 BH |
90 | struct ipv6_params ipv6_defaults = { |
91 | .disable_ipv6 = 0, | |
92 | .autoconf = 1, | |
93 | }; | |
94 | ||
647c0c70 | 95 | static int disable_ipv6_mod; |
56d417b1 BH |
96 | |
97 | module_param_named(disable, disable_ipv6_mod, int, 0444); | |
98 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); | |
99 | ||
100 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); | |
101 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); | |
102 | ||
103 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); | |
104 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); | |
fe7ca2e1 | 105 | |
1da177e4 LT |
106 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
107 | { | |
108 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); | |
109 | ||
110 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); | |
111 | } | |
112 | ||
3f378b68 EP |
113 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
114 | int kern) | |
1da177e4 LT |
115 | { |
116 | struct inet_sock *inet; | |
117 | struct ipv6_pinfo *np; | |
118 | struct sock *sk; | |
1da177e4 LT |
119 | struct inet_protosw *answer; |
120 | struct proto *answer_prot; | |
121 | unsigned char answer_flags; | |
122 | char answer_no_check; | |
af1afe86 YH |
123 | int try_loading_module = 0; |
124 | int err; | |
1da177e4 | 125 | |
6fa3eb70 S |
126 | if (!current_has_network()) |
127 | return -EACCES; | |
128 | ||
b3da2cf3 DM |
129 | if (sock->type != SOCK_RAW && |
130 | sock->type != SOCK_DGRAM && | |
131 | !inet_ehash_secret) | |
132 | build_ehash_secret(); | |
133 | ||
0b15bc29 HFS |
134 | if (protocol < 0 || protocol >= IPPROTO_MAX) |
135 | return -EINVAL; | |
136 | ||
1da177e4 | 137 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
138 | lookup_protocol: |
139 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 140 | rcu_read_lock(); |
696adfe8 | 141 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 142 | |
696adfe8 | 143 | err = 0; |
1da177e4 LT |
144 | /* Check the non-wild match. */ |
145 | if (protocol == answer->protocol) { | |
146 | if (protocol != IPPROTO_IP) | |
147 | break; | |
148 | } else { | |
149 | /* Check for the two wild cases. */ | |
150 | if (IPPROTO_IP == protocol) { | |
151 | protocol = answer->protocol; | |
152 | break; | |
153 | } | |
154 | if (IPPROTO_IP == answer->protocol) | |
155 | break; | |
156 | } | |
af1afe86 | 157 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
158 | } |
159 | ||
696adfe8 | 160 | if (err) { |
af1afe86 YH |
161 | if (try_loading_module < 2) { |
162 | rcu_read_unlock(); | |
163 | /* | |
164 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
165 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
166 | */ | |
167 | if (++try_loading_module == 1) | |
168 | request_module("net-pf-%d-proto-%d-type-%d", | |
169 | PF_INET6, protocol, sock->type); | |
170 | /* | |
171 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
172 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
173 | */ | |
174 | else | |
175 | request_module("net-pf-%d-proto-%d", | |
176 | PF_INET6, protocol); | |
177 | goto lookup_protocol; | |
178 | } else | |
179 | goto out_rcu_unlock; | |
180 | } | |
181 | ||
182 | err = -EPERM; | |
6fa3eb70 | 183 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) |
1da177e4 | 184 | goto out_rcu_unlock; |
1da177e4 LT |
185 | |
186 | sock->ops = answer->ops; | |
1da177e4 LT |
187 | answer_prot = answer->prot; |
188 | answer_no_check = answer->no_check; | |
189 | answer_flags = answer->flags; | |
190 | rcu_read_unlock(); | |
191 | ||
547b792c | 192 | WARN_ON(answer_prot->slab == NULL); |
1da177e4 | 193 | |
af1afe86 | 194 | err = -ENOBUFS; |
6257ff21 | 195 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
196 | if (sk == NULL) |
197 | goto out; | |
198 | ||
199 | sock_init_data(sock, sk); | |
200 | ||
af1afe86 | 201 | err = 0; |
1da177e4 LT |
202 | sk->sk_no_check = answer_no_check; |
203 | if (INET_PROTOSW_REUSE & answer_flags) | |
4a17fd52 | 204 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
205 | |
206 | inet = inet_sk(sk); | |
469de9b9 | 207 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
208 | |
209 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 210 | inet->inet_num = protocol; |
1da177e4 LT |
211 | if (IPPROTO_RAW == protocol) |
212 | inet->hdrincl = 1; | |
213 | } | |
214 | ||
e6848976 | 215 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
216 | sk->sk_family = PF_INET6; |
217 | sk->sk_protocol = protocol; | |
218 | ||
219 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
220 | ||
221 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
222 | np->hop_limit = -1; | |
f935aa9e | 223 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
224 | np->mc_loop = 1; |
225 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
2e761e05 | 226 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 227 | |
1da177e4 LT |
228 | /* Init the ipv4 part of the socket since we can have sockets |
229 | * using v6 API for ipv4. | |
230 | */ | |
231 | inet->uc_ttl = -1; | |
232 | ||
233 | inet->mc_loop = 1; | |
234 | inet->mc_ttl = 1; | |
235 | inet->mc_index = 0; | |
236 | inet->mc_list = NULL; | |
4c507d28 | 237 | inet->rcv_tos = 0; |
1da177e4 LT |
238 | |
239 | if (ipv4_config.no_pmtu_disc) | |
240 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
241 | else | |
242 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 243 | /* |
e6848976 ACM |
244 | * Increment only the relevant sk_prot->socks debug field, this changes |
245 | * the previous behaviour of incrementing both the equivalent to | |
246 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
247 | * | |
248 | * This allows better debug granularity as we'll know exactly how many | |
249 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
250 | * transport protocol socks. -acme | |
251 | */ | |
252 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 253 | |
c720c7e8 | 254 | if (inet->inet_num) { |
1da177e4 LT |
255 | /* It assumes that any protocol which allows |
256 | * the user to assign a number at socket | |
257 | * creation time automatically shares. | |
258 | */ | |
c720c7e8 | 259 | inet->inet_sport = htons(inet->inet_num); |
1da177e4 LT |
260 | sk->sk_prot->hash(sk); |
261 | } | |
262 | if (sk->sk_prot->init) { | |
af1afe86 YH |
263 | err = sk->sk_prot->init(sk); |
264 | if (err) { | |
1da177e4 LT |
265 | sk_common_release(sk); |
266 | goto out; | |
267 | } | |
268 | } | |
269 | out: | |
af1afe86 | 270 | return err; |
1da177e4 LT |
271 | out_rcu_unlock: |
272 | rcu_read_unlock(); | |
273 | goto out; | |
274 | } | |
275 | ||
276 | ||
277 | /* bind for INET6 API */ | |
278 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
279 | { | |
647c0c70 | 280 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
281 | struct sock *sk = sock->sk; |
282 | struct inet_sock *inet = inet_sk(sk); | |
283 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 284 | struct net *net = sock_net(sk); |
fd683222 | 285 | __be32 v4addr = 0; |
1da177e4 LT |
286 | unsigned short snum; |
287 | int addr_type = 0; | |
288 | int err = 0; | |
289 | ||
290 | /* If the socket has its own bind function then use it. */ | |
291 | if (sk->sk_prot->bind) | |
292 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
293 | ||
294 | if (addr_len < SIN6_LEN_RFC2133) | |
295 | return -EINVAL; | |
5a079c30 MM |
296 | |
297 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 298 | return -EAFNOSUPPORT; |
5a079c30 | 299 | |
1da177e4 LT |
300 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
301 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
302 | return -EINVAL; | |
303 | ||
304 | snum = ntohs(addr->sin6_port); | |
3594698a | 305 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
1da177e4 LT |
306 | return -EACCES; |
307 | ||
308 | lock_sock(sk); | |
309 | ||
310 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 311 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
312 | err = -EINVAL; |
313 | goto out; | |
314 | } | |
315 | ||
316 | /* Check if the address belongs to the host. */ | |
317 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
318 | int chk_addr_ret; |
319 | ||
783ed5a7 VY |
320 | /* Binding to v4-mapped address on a v6-only socket |
321 | * makes no sense | |
322 | */ | |
323 | if (np->ipv6only) { | |
324 | err = -EINVAL; | |
325 | goto out; | |
326 | } | |
63d9950b | 327 | |
a34f0b31 | 328 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 329 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b VY |
330 | chk_addr_ret = inet_addr_type(net, v4addr); |
331 | if (!sysctl_ip_nonlocal_bind && | |
332 | !(inet->freebind || inet->transparent) && | |
333 | v4addr != htonl(INADDR_ANY) && | |
334 | chk_addr_ret != RTN_LOCAL && | |
335 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
336 | chk_addr_ret != RTN_BROADCAST) { |
337 | err = -EADDRNOTAVAIL; | |
1da177e4 | 338 | goto out; |
ca6982b8 | 339 | } |
1da177e4 LT |
340 | } else { |
341 | if (addr_type != IPV6_ADDR_ANY) { | |
342 | struct net_device *dev = NULL; | |
343 | ||
16ba5e8e | 344 | rcu_read_lock(); |
842df073 | 345 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
346 | if (addr_len >= sizeof(struct sockaddr_in6) && |
347 | addr->sin6_scope_id) { | |
348 | /* Override any existing binding, if another one | |
349 | * is supplied by user. | |
350 | */ | |
351 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
352 | } | |
1ab1457c | 353 | |
1da177e4 LT |
354 | /* Binding to link-local address requires an interface */ |
355 | if (!sk->sk_bound_dev_if) { | |
356 | err = -EINVAL; | |
16ba5e8e | 357 | goto out_unlock; |
1da177e4 | 358 | } |
16ba5e8e | 359 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
360 | if (!dev) { |
361 | err = -ENODEV; | |
16ba5e8e | 362 | goto out_unlock; |
1da177e4 LT |
363 | } |
364 | } | |
365 | ||
366 | /* ipv4 addr of the socket is invalid. Only the | |
367 | * unspecified and mapped address have a v4 equivalent. | |
368 | */ | |
369 | v4addr = LOOPBACK4_IPV6; | |
370 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
f74024d9 | 371 | if (!(inet->freebind || inet->transparent) && |
0a513f6a | 372 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 373 | dev, 0)) { |
1da177e4 | 374 | err = -EADDRNOTAVAIL; |
16ba5e8e | 375 | goto out_unlock; |
1da177e4 LT |
376 | } |
377 | } | |
16ba5e8e | 378 | rcu_read_unlock(); |
1da177e4 LT |
379 | } |
380 | } | |
381 | ||
c720c7e8 ED |
382 | inet->inet_rcv_saddr = v4addr; |
383 | inet->inet_saddr = v4addr; | |
1da177e4 | 384 | |
4e3fd7a0 | 385 | np->rcv_saddr = addr->sin6_addr; |
1ab1457c | 386 | |
1da177e4 | 387 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 388 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
389 | |
390 | /* Make sure we are allowed to bind here. */ | |
391 | if (sk->sk_prot->get_port(sk, snum)) { | |
392 | inet_reset_saddr(sk); | |
393 | err = -EADDRINUSE; | |
394 | goto out; | |
395 | } | |
396 | ||
0f8d3c7a | 397 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 398 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a VY |
399 | if (addr_type != IPV6_ADDR_MAPPED) |
400 | np->ipv6only = 1; | |
401 | } | |
1da177e4 LT |
402 | if (snum) |
403 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
404 | inet->inet_sport = htons(inet->inet_num); |
405 | inet->inet_dport = 0; | |
406 | inet->inet_daddr = 0; | |
1da177e4 LT |
407 | out: |
408 | release_sock(sk); | |
409 | return err; | |
16ba5e8e ED |
410 | out_unlock: |
411 | rcu_read_unlock(); | |
412 | goto out; | |
1da177e4 | 413 | } |
7159039a YH |
414 | EXPORT_SYMBOL(inet6_bind); |
415 | ||
1da177e4 LT |
416 | int inet6_release(struct socket *sock) |
417 | { | |
418 | struct sock *sk = sock->sk; | |
419 | ||
420 | if (sk == NULL) | |
421 | return -EINVAL; | |
422 | ||
423 | /* Free mc lists */ | |
424 | ipv6_sock_mc_close(sk); | |
425 | ||
426 | /* Free ac lists */ | |
427 | ipv6_sock_ac_close(sk); | |
428 | ||
429 | return inet_release(sock); | |
430 | } | |
7159039a YH |
431 | EXPORT_SYMBOL(inet6_release); |
432 | ||
7d06b2e0 | 433 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
434 | { |
435 | struct ipv6_pinfo *np = inet6_sk(sk); | |
436 | struct sk_buff *skb; | |
437 | struct ipv6_txoptions *opt; | |
438 | ||
1da177e4 LT |
439 | /* Release rx options */ |
440 | ||
647c0c70 EZ |
441 | skb = xchg(&np->pktoptions, NULL); |
442 | if (skb != NULL) | |
1da177e4 | 443 | kfree_skb(skb); |
4b340ae2 | 444 | |
647c0c70 EZ |
445 | skb = xchg(&np->rxpmtu, NULL); |
446 | if (skb != NULL) | |
4b340ae2 | 447 | kfree_skb(skb); |
1da177e4 LT |
448 | |
449 | /* Free flowlabels */ | |
450 | fl6_free_socklist(sk); | |
451 | ||
452 | /* Free tx options */ | |
453 | ||
647c0c70 EZ |
454 | opt = xchg(&np->opt, NULL); |
455 | if (opt != NULL) | |
1da177e4 | 456 | sock_kfree_s(sk, opt, opt->tot_len); |
1da177e4 | 457 | } |
3cf3dc6c ACM |
458 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
459 | ||
1da177e4 LT |
460 | /* |
461 | * This does both peername and sockname. | |
462 | */ | |
1ab1457c | 463 | |
1da177e4 LT |
464 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
465 | int *uaddr_len, int peer) | |
466 | { | |
647c0c70 | 467 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
468 | struct sock *sk = sock->sk; |
469 | struct inet_sock *inet = inet_sk(sk); | |
470 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 471 | |
1da177e4 LT |
472 | sin->sin6_family = AF_INET6; |
473 | sin->sin6_flowinfo = 0; | |
474 | sin->sin6_scope_id = 0; | |
475 | if (peer) { | |
c720c7e8 | 476 | if (!inet->inet_dport) |
1da177e4 LT |
477 | return -ENOTCONN; |
478 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
479 | peer == 1) | |
480 | return -ENOTCONN; | |
c720c7e8 | 481 | sin->sin6_port = inet->inet_dport; |
4e3fd7a0 | 482 | sin->sin6_addr = np->daddr; |
1da177e4 LT |
483 | if (np->sndflow) |
484 | sin->sin6_flowinfo = np->flow_label; | |
485 | } else { | |
486 | if (ipv6_addr_any(&np->rcv_saddr)) | |
4e3fd7a0 | 487 | sin->sin6_addr = np->saddr; |
1da177e4 | 488 | else |
4e3fd7a0 | 489 | sin->sin6_addr = np->rcv_saddr; |
1da177e4 | 490 | |
c720c7e8 | 491 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 492 | } |
842df073 HFS |
493 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
494 | sk->sk_bound_dev_if); | |
1da177e4 | 495 | *uaddr_len = sizeof(*sin); |
a02cec21 | 496 | return 0; |
1da177e4 | 497 | } |
7159039a YH |
498 | EXPORT_SYMBOL(inet6_getname); |
499 | ||
6fa3eb70 S |
500 | int inet6_killaddr_ioctl(struct net *net, void __user *arg) { |
501 | struct in6_ifreq ireq; | |
502 | struct sockaddr_in6 sin6; | |
503 | ||
504 | if (!capable(CAP_NET_ADMIN)) | |
505 | return -EACCES; | |
506 | ||
507 | if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq))) | |
508 | return -EFAULT; | |
509 | ||
510 | sin6.sin6_family = AF_INET6; | |
511 | sin6.sin6_addr = ireq.ifr6_addr; | |
512 | return tcp_nuke_addr(net, (struct sockaddr *) &sin6); | |
513 | } | |
514 | ||
1da177e4 LT |
515 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
516 | { | |
517 | struct sock *sk = sock->sk; | |
3b1e0a65 | 518 | struct net *net = sock_net(sk); |
1da177e4 | 519 | |
647c0c70 | 520 | switch (cmd) { |
1da177e4 LT |
521 | case SIOCGSTAMP: |
522 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
523 | ||
ae40eb1e ED |
524 | case SIOCGSTAMPNS: |
525 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
526 | ||
1da177e4 LT |
527 | case SIOCADDRT: |
528 | case SIOCDELRT: | |
1ab1457c | 529 | |
a02cec21 | 530 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
531 | |
532 | case SIOCSIFADDR: | |
af284937 | 533 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 534 | case SIOCDIFADDR: |
af284937 | 535 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 536 | case SIOCSIFDSTADDR: |
af284937 | 537 | return addrconf_set_dstaddr(net, (void __user *) arg); |
6fa3eb70 S |
538 | case SIOCKILLADDR: |
539 | return inet6_killaddr_ioctl(net, (void __user *) arg); | |
1da177e4 | 540 | default: |
b5e5fa5e CH |
541 | if (!sk->sk_prot->ioctl) |
542 | return -ENOIOCTLCMD; | |
543 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
544 | } |
545 | /*NOTREACHED*/ | |
a02cec21 | 546 | return 0; |
1da177e4 | 547 | } |
7159039a YH |
548 | EXPORT_SYMBOL(inet6_ioctl); |
549 | ||
90ddc4f0 | 550 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
551 | .family = PF_INET6, |
552 | .owner = THIS_MODULE, | |
553 | .release = inet6_release, | |
554 | .bind = inet6_bind, | |
555 | .connect = inet_stream_connect, /* ok */ | |
556 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
557 | .accept = inet_accept, /* ok */ | |
558 | .getname = inet6_getname, | |
559 | .poll = tcp_poll, /* ok */ | |
560 | .ioctl = inet6_ioctl, /* must change */ | |
561 | .listen = inet_listen, /* ok */ | |
562 | .shutdown = inet_shutdown, /* ok */ | |
563 | .setsockopt = sock_common_setsockopt, /* ok */ | |
564 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
565 | .sendmsg = inet_sendmsg, /* ok */ |
566 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 567 | .mmap = sock_no_mmap, |
7ba42910 | 568 | .sendpage = inet_sendpage, |
a0974dd3 | 569 | .splice_read = tcp_splice_read, |
3fdadf7d | 570 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
571 | .compat_setsockopt = compat_sock_common_setsockopt, |
572 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 573 | #endif |
1da177e4 LT |
574 | }; |
575 | ||
90ddc4f0 | 576 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
577 | .family = PF_INET6, |
578 | .owner = THIS_MODULE, | |
579 | .release = inet6_release, | |
580 | .bind = inet6_bind, | |
581 | .connect = inet_dgram_connect, /* ok */ | |
582 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
583 | .accept = sock_no_accept, /* a do nothing */ | |
584 | .getname = inet6_getname, | |
585 | .poll = udp_poll, /* ok */ | |
586 | .ioctl = inet6_ioctl, /* must change */ | |
587 | .listen = sock_no_listen, /* ok */ | |
588 | .shutdown = inet_shutdown, /* ok */ | |
589 | .setsockopt = sock_common_setsockopt, /* ok */ | |
590 | .getsockopt = sock_common_getsockopt, /* ok */ | |
591 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 592 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
593 | .mmap = sock_no_mmap, |
594 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 595 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
596 | .compat_setsockopt = compat_sock_common_setsockopt, |
597 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 598 | #endif |
1da177e4 LT |
599 | }; |
600 | ||
ec1b4cf7 | 601 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
602 | .family = PF_INET6, |
603 | .create = inet6_create, | |
604 | .owner = THIS_MODULE, | |
605 | }; | |
606 | ||
87c3efbf | 607 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
608 | { |
609 | struct list_head *lh; | |
610 | struct inet_protosw *answer; | |
1da177e4 | 611 | struct list_head *last_perm; |
87c3efbf DL |
612 | int protocol = p->protocol; |
613 | int ret; | |
1da177e4 LT |
614 | |
615 | spin_lock_bh(&inetsw6_lock); | |
616 | ||
87c3efbf | 617 | ret = -EINVAL; |
1da177e4 LT |
618 | if (p->type >= SOCK_MAX) |
619 | goto out_illegal; | |
620 | ||
621 | /* If we are trying to override a permanent protocol, bail. */ | |
622 | answer = NULL; | |
87c3efbf | 623 | ret = -EPERM; |
1da177e4 LT |
624 | last_perm = &inetsw6[p->type]; |
625 | list_for_each(lh, &inetsw6[p->type]) { | |
626 | answer = list_entry(lh, struct inet_protosw, list); | |
627 | ||
628 | /* Check only the non-wild match. */ | |
629 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
630 | if (protocol == answer->protocol) | |
631 | break; | |
632 | last_perm = lh; | |
633 | } | |
634 | ||
635 | answer = NULL; | |
636 | } | |
637 | if (answer) | |
638 | goto out_permanent; | |
639 | ||
640 | /* Add the new entry after the last permanent entry if any, so that | |
641 | * the new entry does not override a permanent entry when matched with | |
642 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 643 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
644 | * system automatically returns to the old behavior. |
645 | */ | |
646 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 647 | ret = 0; |
1da177e4 LT |
648 | out: |
649 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 650 | return ret; |
1da177e4 LT |
651 | |
652 | out_permanent: | |
f3213831 | 653 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
654 | goto out; |
655 | ||
656 | out_illegal: | |
f3213831 | 657 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
658 | p->type); |
659 | goto out; | |
660 | } | |
7159039a YH |
661 | EXPORT_SYMBOL(inet6_register_protosw); |
662 | ||
1da177e4 LT |
663 | void |
664 | inet6_unregister_protosw(struct inet_protosw *p) | |
665 | { | |
666 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 667 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
668 | p->protocol); |
669 | } else { | |
670 | spin_lock_bh(&inetsw6_lock); | |
671 | list_del_rcu(&p->list); | |
672 | spin_unlock_bh(&inetsw6_lock); | |
673 | ||
674 | synchronize_net(); | |
675 | } | |
676 | } | |
7159039a YH |
677 | EXPORT_SYMBOL(inet6_unregister_protosw); |
678 | ||
b9750ce1 ACM |
679 | int inet6_sk_rebuild_header(struct sock *sk) |
680 | { | |
b9750ce1 | 681 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 682 | struct dst_entry *dst; |
b9750ce1 ACM |
683 | |
684 | dst = __sk_dst_check(sk, np->dst_cookie); | |
685 | ||
686 | if (dst == NULL) { | |
687 | struct inet_sock *inet = inet_sk(sk); | |
20c59de2 | 688 | struct in6_addr *final_p, final; |
4c9483b2 DM |
689 | struct flowi6 fl6; |
690 | ||
691 | memset(&fl6, 0, sizeof(fl6)); | |
692 | fl6.flowi6_proto = sk->sk_protocol; | |
4e3fd7a0 AD |
693 | fl6.daddr = np->daddr; |
694 | fl6.saddr = np->saddr; | |
4c9483b2 DM |
695 | fl6.flowlabel = np->flow_label; |
696 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
697 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
698 | fl6.fl6_dport = inet->inet_dport; |
699 | fl6.fl6_sport = inet->inet_sport; | |
6fa3eb70 | 700 | fl6.flowi6_uid = sock_i_uid(sk); |
4c9483b2 DM |
701 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
702 | ||
703 | final_p = fl6_update_dst(&fl6, np->opt, &final); | |
704 | ||
705 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); | |
68d0c6d3 | 706 | if (IS_ERR(dst)) { |
b9750ce1 | 707 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
708 | sk->sk_err_soft = -PTR_ERR(dst); |
709 | return PTR_ERR(dst); | |
b9750ce1 ACM |
710 | } |
711 | ||
8e1ef0a9 | 712 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
713 | } |
714 | ||
715 | return 0; | |
716 | } | |
b9750ce1 ACM |
717 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
718 | ||
92113bfd | 719 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb) |
399c07de | 720 | { |
92113bfd ED |
721 | const struct ipv6_pinfo *np = inet6_sk(sk); |
722 | const struct inet6_skb_parm *opt = IP6CB(skb); | |
399c07de ACM |
723 | |
724 | if (np->rxopt.all) { | |
725 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
726 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
727 | ((IPV6_FLOWINFO_MASK & |
728 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
729 | np->rxopt.bits.rxflow) || |
730 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
731 | np->rxopt.bits.osrcrt)) || | |
732 | ((opt->dst1 || opt->dst0) && | |
733 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 734 | return true; |
399c07de | 735 | } |
92113bfd | 736 | return false; |
399c07de | 737 | } |
399c07de ACM |
738 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
739 | ||
7546dd97 | 740 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 741 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 742 | .func = ipv6_rcv, |
22061d80 VY |
743 | }; |
744 | ||
662397fd YH |
745 | static int __init ipv6_packet_init(void) |
746 | { | |
747 | dev_add_pack(&ipv6_packet_type); | |
748 | return 0; | |
749 | } | |
750 | ||
751 | static void ipv6_packet_cleanup(void) | |
752 | { | |
753 | dev_remove_pack(&ipv6_packet_type); | |
754 | } | |
755 | ||
e43291cb DL |
756 | static int __net_init ipv6_init_mibs(struct net *net) |
757 | { | |
7d720c3e | 758 | if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6, |
1823e4c8 ED |
759 | sizeof(struct udp_mib), |
760 | __alignof__(struct udp_mib)) < 0) | |
0c7ed677 | 761 | return -ENOMEM; |
7d720c3e | 762 | if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6, |
1823e4c8 ED |
763 | sizeof(struct udp_mib), |
764 | __alignof__(struct udp_mib)) < 0) | |
be713a44 | 765 | goto err_udplite_mib; |
7d720c3e | 766 | if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics, |
1823e4c8 ED |
767 | sizeof(struct ipstats_mib), |
768 | __alignof__(struct ipstats_mib)) < 0) | |
9261e537 | 769 | goto err_ip_mib; |
7d720c3e | 770 | if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics, |
1823e4c8 ED |
771 | sizeof(struct icmpv6_mib), |
772 | __alignof__(struct icmpv6_mib)) < 0) | |
9261e537 | 773 | goto err_icmp_mib; |
2a24444f ED |
774 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
775 | GFP_KERNEL); | |
776 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 777 | goto err_icmpmsg_mib; |
e43291cb | 778 | return 0; |
be713a44 | 779 | |
9261e537 | 780 | err_icmpmsg_mib: |
7d720c3e | 781 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
9261e537 | 782 | err_icmp_mib: |
7d720c3e | 783 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
9261e537 | 784 | err_ip_mib: |
7d720c3e | 785 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
be713a44 | 786 | err_udplite_mib: |
7d720c3e | 787 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
be713a44 | 788 | return -ENOMEM; |
e43291cb DL |
789 | } |
790 | ||
2c8c1e72 | 791 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 792 | { |
7d720c3e TH |
793 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
794 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); | |
795 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); | |
796 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); | |
2a24444f | 797 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
798 | } |
799 | ||
e7dc8494 | 800 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 801 | { |
0c96d8c5 DL |
802 | int err = 0; |
803 | ||
99bc9c4e | 804 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 805 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 806 | |
e43291cb DL |
807 | err = ipv6_init_mibs(net); |
808 | if (err) | |
809 | return err; | |
0c96d8c5 DL |
810 | #ifdef CONFIG_PROC_FS |
811 | err = udp6_proc_init(net); | |
812 | if (err) | |
813 | goto out; | |
6f8b13bc DL |
814 | err = tcp6_proc_init(net); |
815 | if (err) | |
816 | goto proc_tcp6_fail; | |
6ab57e7e DL |
817 | err = ac6_proc_init(net); |
818 | if (err) | |
819 | goto proc_ac6_fail; | |
0c96d8c5 DL |
820 | #endif |
821 | return err; | |
6f8b13bc DL |
822 | |
823 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
824 | proc_ac6_fail: |
825 | tcp6_proc_exit(net); | |
6f8b13bc DL |
826 | proc_tcp6_fail: |
827 | udp6_proc_exit(net); | |
e43291cb DL |
828 | out: |
829 | ipv6_cleanup_mibs(net); | |
830 | return err; | |
6f8b13bc | 831 | #endif |
81c1c178 DL |
832 | } |
833 | ||
2c8c1e72 | 834 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 835 | { |
0c96d8c5 DL |
836 | #ifdef CONFIG_PROC_FS |
837 | udp6_proc_exit(net); | |
6f8b13bc | 838 | tcp6_proc_exit(net); |
6ab57e7e | 839 | ac6_proc_exit(net); |
0c96d8c5 | 840 | #endif |
e43291cb | 841 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
842 | } |
843 | ||
844 | static struct pernet_operations inet6_net_ops = { | |
845 | .init = inet6_net_init, | |
846 | .exit = inet6_net_exit, | |
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 | |
ba96bcbc | 854 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb)); |
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 | ||
6fa3eb70 S |
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 | |
3dc43e3e GC |
899 | tcpv6_prot.sysctl_mem = init_net.ipv4.sysctl_tcp_mem; |
900 | ||
1da177e4 LT |
901 | /* |
902 | * ipngwg API draft makes clear that the correct semantics | |
903 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 904 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
905 | * able to communicate via both network protocols. |
906 | */ | |
907 | ||
81c1c178 DL |
908 | err = register_pernet_subsys(&inet6_net_ops); |
909 | if (err) | |
910 | goto register_pernet_fail; | |
9b0f976f | 911 | err = icmpv6_init(); |
1da177e4 LT |
912 | if (err) |
913 | goto icmp_fail; | |
623d1a1a WC |
914 | err = ip6_mr_init(); |
915 | if (err) | |
916 | goto ipmr_fail; | |
9b0f976f | 917 | err = ndisc_init(); |
1da177e4 LT |
918 | if (err) |
919 | goto ndisc_fail; | |
9b0f976f | 920 | err = igmp6_init(); |
1da177e4 LT |
921 | if (err) |
922 | goto igmp_fail; | |
2cc7d573 HW |
923 | err = ipv6_netfilter_init(); |
924 | if (err) | |
925 | goto netfilter_fail; | |
1da177e4 LT |
926 | /* Create /proc/foo6 entries. */ |
927 | #ifdef CONFIG_PROC_FS | |
928 | err = -ENOMEM; | |
929 | if (raw6_proc_init()) | |
930 | goto proc_raw6_fail; | |
ba4e58ec GR |
931 | if (udplite6_proc_init()) |
932 | goto proc_udplite6_fail; | |
1da177e4 LT |
933 | if (ipv6_misc_proc_init()) |
934 | goto proc_misc6_fail; | |
1da177e4 LT |
935 | if (if6_proc_init()) |
936 | goto proc_if6_fail; | |
937 | #endif | |
e2fddf5e DL |
938 | err = ip6_route_init(); |
939 | if (err) | |
940 | goto ip6_route_fail; | |
0a3e78ac DL |
941 | err = ip6_flowlabel_init(); |
942 | if (err) | |
943 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
944 | err = addrconf_init(); |
945 | if (err) | |
946 | goto addrconf_fail; | |
1da177e4 LT |
947 | |
948 | /* Init v6 extension headers. */ | |
248b238d DL |
949 | err = ipv6_exthdrs_init(); |
950 | if (err) | |
951 | goto ipv6_exthdrs_fail; | |
952 | ||
853cbbaa DL |
953 | err = ipv6_frag_init(); |
954 | if (err) | |
955 | goto ipv6_frag_fail; | |
1da177e4 LT |
956 | |
957 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
958 | err = udpv6_init(); |
959 | if (err) | |
960 | goto udpv6_fail; | |
e2ed4052 | 961 | |
7f4e4868 DL |
962 | err = udplitev6_init(); |
963 | if (err) | |
964 | goto udplitev6_fail; | |
965 | ||
966 | err = tcpv6_init(); | |
967 | if (err) | |
968 | goto tcpv6_fail; | |
969 | ||
970 | err = ipv6_packet_init(); | |
971 | if (err) | |
972 | goto ipv6_packet_fail; | |
94911fe3 | 973 | |
6fa3eb70 S |
974 | err = pingv6_init(); |
975 | if (err) | |
976 | goto pingv6_fail; | |
977 | ||
94911fe3 BT |
978 | #ifdef CONFIG_SYSCTL |
979 | err = ipv6_sysctl_register(); | |
980 | if (err) | |
981 | goto sysctl_fail; | |
982 | #endif | |
1da177e4 LT |
983 | out: |
984 | return err; | |
985 | ||
94911fe3 BT |
986 | #ifdef CONFIG_SYSCTL |
987 | sysctl_fail: | |
988 | ipv6_packet_cleanup(); | |
989 | #endif | |
6fa3eb70 S |
990 | pingv6_fail: |
991 | pingv6_exit(); | |
7f4e4868 DL |
992 | ipv6_packet_fail: |
993 | tcpv6_exit(); | |
994 | tcpv6_fail: | |
995 | udplitev6_exit(); | |
996 | udplitev6_fail: | |
997 | udpv6_exit(); | |
998 | udpv6_fail: | |
999 | ipv6_frag_exit(); | |
853cbbaa DL |
1000 | ipv6_frag_fail: |
1001 | ipv6_exthdrs_exit(); | |
248b238d DL |
1002 | ipv6_exthdrs_fail: |
1003 | addrconf_cleanup(); | |
1da177e4 LT |
1004 | addrconf_fail: |
1005 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1006 | ip6_flowlabel_fail: |
1da177e4 | 1007 | ip6_route_cleanup(); |
e2fddf5e | 1008 | ip6_route_fail: |
1da177e4 LT |
1009 | #ifdef CONFIG_PROC_FS |
1010 | if6_proc_exit(); | |
1011 | proc_if6_fail: | |
1da177e4 LT |
1012 | ipv6_misc_proc_exit(); |
1013 | proc_misc6_fail: | |
ba4e58ec GR |
1014 | udplite6_proc_exit(); |
1015 | proc_udplite6_fail: | |
1da177e4 LT |
1016 | raw6_proc_exit(); |
1017 | proc_raw6_fail: | |
1018 | #endif | |
2cc7d573 HW |
1019 | ipv6_netfilter_fini(); |
1020 | netfilter_fail: | |
1da177e4 LT |
1021 | igmp6_cleanup(); |
1022 | igmp_fail: | |
1023 | ndisc_cleanup(); | |
1024 | ndisc_fail: | |
623d1a1a WC |
1025 | ip6_mr_cleanup(); |
1026 | ipmr_fail: | |
1da177e4 LT |
1027 | icmpv6_cleanup(); |
1028 | icmp_fail: | |
81c1c178 DL |
1029 | unregister_pernet_subsys(&inet6_net_ops); |
1030 | register_pernet_fail: | |
8eb55910 | 1031 | sock_unregister(PF_INET6); |
e2fddf5e | 1032 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1033 | out_sock_register_fail: |
1034 | rawv6_exit(); | |
6fa3eb70 S |
1035 | out_unregister_ping_proto: |
1036 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1037 | out_unregister_raw_proto: |
1038 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1039 | out_unregister_udplite_proto: |
1040 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1041 | out_unregister_udp_proto: |
1042 | proto_unregister(&udpv6_prot); | |
1043 | out_unregister_tcp_proto: | |
1044 | proto_unregister(&tcpv6_prot); | |
1045 | goto out; | |
1046 | } | |
1047 | module_init(inet6_init); | |
1048 | ||
1049 | static void __exit inet6_exit(void) | |
1050 | { | |
56d417b1 | 1051 | if (disable_ipv6_mod) |
ff8cf9a9 JD |
1052 | return; |
1053 | ||
1da177e4 LT |
1054 | /* First of all disallow new sockets creation. */ |
1055 | sock_unregister(PF_INET6); | |
c127ea2c TG |
1056 | /* Disallow any further netlink messages */ |
1057 | rtnl_unregister_all(PF_INET6); | |
ca17c233 | 1058 | |
7f4e4868 DL |
1059 | udpv6_exit(); |
1060 | udplitev6_exit(); | |
1061 | tcpv6_exit(); | |
1062 | ||
ca17c233 JJ |
1063 | /* Cleanup code parts. */ |
1064 | ipv6_packet_cleanup(); | |
853cbbaa | 1065 | ipv6_frag_exit(); |
248b238d | 1066 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1067 | addrconf_cleanup(); |
1068 | ip6_flowlabel_cleanup(); | |
1069 | ip6_route_cleanup(); | |
1da177e4 | 1070 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1071 | |
1072 | /* Cleanup code parts. */ | |
1da177e4 | 1073 | if6_proc_exit(); |
1ab1457c | 1074 | ipv6_misc_proc_exit(); |
1ab1457c | 1075 | udplite6_proc_exit(); |
1ab1457c | 1076 | raw6_proc_exit(); |
2c8d7ca0 | 1077 | #endif |
2cc7d573 | 1078 | ipv6_netfilter_fini(); |
ca17c233 | 1079 | igmp6_cleanup(); |
1da177e4 | 1080 | ndisc_cleanup(); |
623d1a1a | 1081 | ip6_mr_cleanup(); |
1da177e4 | 1082 | icmpv6_cleanup(); |
7f4e4868 | 1083 | rawv6_exit(); |
94911fe3 | 1084 | |
81c1c178 | 1085 | unregister_pernet_subsys(&inet6_net_ops); |
1da177e4 | 1086 | proto_unregister(&rawv6_prot); |
ca17c233 | 1087 | proto_unregister(&udplitev6_prot); |
1da177e4 LT |
1088 | proto_unregister(&udpv6_prot); |
1089 | proto_unregister(&tcpv6_prot); | |
1f2ccd00 JDB |
1090 | |
1091 | rcu_barrier(); /* Wait for completion of call_rcu()'s */ | |
1da177e4 LT |
1092 | } |
1093 | module_exit(inet6_exit); | |
1094 | ||
1095 | MODULE_ALIAS_NETPROTO(PF_INET6); |