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 | ||
1da177e4 | 134 | /* Look for the requested type/protocol pair. */ |
af1afe86 YH |
135 | lookup_protocol: |
136 | err = -ESOCKTNOSUPPORT; | |
1da177e4 | 137 | rcu_read_lock(); |
696adfe8 | 138 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
1da177e4 | 139 | |
696adfe8 | 140 | err = 0; |
1da177e4 LT |
141 | /* Check the non-wild match. */ |
142 | if (protocol == answer->protocol) { | |
143 | if (protocol != IPPROTO_IP) | |
144 | break; | |
145 | } else { | |
146 | /* Check for the two wild cases. */ | |
147 | if (IPPROTO_IP == protocol) { | |
148 | protocol = answer->protocol; | |
149 | break; | |
150 | } | |
151 | if (IPPROTO_IP == answer->protocol) | |
152 | break; | |
153 | } | |
af1afe86 | 154 | err = -EPROTONOSUPPORT; |
1da177e4 LT |
155 | } |
156 | ||
696adfe8 | 157 | if (err) { |
af1afe86 YH |
158 | if (try_loading_module < 2) { |
159 | rcu_read_unlock(); | |
160 | /* | |
161 | * Be more specific, e.g. net-pf-10-proto-132-type-1 | |
162 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) | |
163 | */ | |
164 | if (++try_loading_module == 1) | |
165 | request_module("net-pf-%d-proto-%d-type-%d", | |
166 | PF_INET6, protocol, sock->type); | |
167 | /* | |
168 | * Fall back to generic, e.g. net-pf-10-proto-132 | |
169 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) | |
170 | */ | |
171 | else | |
172 | request_module("net-pf-%d-proto-%d", | |
173 | PF_INET6, protocol); | |
174 | goto lookup_protocol; | |
175 | } else | |
176 | goto out_rcu_unlock; | |
177 | } | |
178 | ||
179 | err = -EPERM; | |
6fa3eb70 | 180 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) |
1da177e4 | 181 | goto out_rcu_unlock; |
1da177e4 LT |
182 | |
183 | sock->ops = answer->ops; | |
1da177e4 LT |
184 | answer_prot = answer->prot; |
185 | answer_no_check = answer->no_check; | |
186 | answer_flags = answer->flags; | |
187 | rcu_read_unlock(); | |
188 | ||
547b792c | 189 | WARN_ON(answer_prot->slab == NULL); |
1da177e4 | 190 | |
af1afe86 | 191 | err = -ENOBUFS; |
6257ff21 | 192 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
1da177e4 LT |
193 | if (sk == NULL) |
194 | goto out; | |
195 | ||
196 | sock_init_data(sock, sk); | |
197 | ||
af1afe86 | 198 | err = 0; |
1da177e4 LT |
199 | sk->sk_no_check = answer_no_check; |
200 | if (INET_PROTOSW_REUSE & answer_flags) | |
4a17fd52 | 201 | sk->sk_reuse = SK_CAN_REUSE; |
1da177e4 LT |
202 | |
203 | inet = inet_sk(sk); | |
469de9b9 | 204 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
1da177e4 LT |
205 | |
206 | if (SOCK_RAW == sock->type) { | |
c720c7e8 | 207 | inet->inet_num = protocol; |
1da177e4 LT |
208 | if (IPPROTO_RAW == protocol) |
209 | inet->hdrincl = 1; | |
210 | } | |
211 | ||
e6848976 | 212 | sk->sk_destruct = inet_sock_destruct; |
1da177e4 LT |
213 | sk->sk_family = PF_INET6; |
214 | sk->sk_protocol = protocol; | |
215 | ||
216 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; | |
217 | ||
218 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); | |
219 | np->hop_limit = -1; | |
f935aa9e | 220 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
1da177e4 LT |
221 | np->mc_loop = 1; |
222 | np->pmtudisc = IPV6_PMTUDISC_WANT; | |
2e761e05 | 223 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
1ab1457c | 224 | |
1da177e4 LT |
225 | /* Init the ipv4 part of the socket since we can have sockets |
226 | * using v6 API for ipv4. | |
227 | */ | |
228 | inet->uc_ttl = -1; | |
229 | ||
230 | inet->mc_loop = 1; | |
231 | inet->mc_ttl = 1; | |
232 | inet->mc_index = 0; | |
233 | inet->mc_list = NULL; | |
4c507d28 | 234 | inet->rcv_tos = 0; |
1da177e4 LT |
235 | |
236 | if (ipv4_config.no_pmtu_disc) | |
237 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
238 | else | |
239 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
1ab1457c | 240 | /* |
e6848976 ACM |
241 | * Increment only the relevant sk_prot->socks debug field, this changes |
242 | * the previous behaviour of incrementing both the equivalent to | |
243 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. | |
244 | * | |
245 | * This allows better debug granularity as we'll know exactly how many | |
246 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 | |
247 | * transport protocol socks. -acme | |
248 | */ | |
249 | sk_refcnt_debug_inc(sk); | |
1da177e4 | 250 | |
c720c7e8 | 251 | if (inet->inet_num) { |
1da177e4 LT |
252 | /* It assumes that any protocol which allows |
253 | * the user to assign a number at socket | |
254 | * creation time automatically shares. | |
255 | */ | |
c720c7e8 | 256 | inet->inet_sport = htons(inet->inet_num); |
1da177e4 LT |
257 | sk->sk_prot->hash(sk); |
258 | } | |
259 | if (sk->sk_prot->init) { | |
af1afe86 YH |
260 | err = sk->sk_prot->init(sk); |
261 | if (err) { | |
1da177e4 LT |
262 | sk_common_release(sk); |
263 | goto out; | |
264 | } | |
265 | } | |
266 | out: | |
af1afe86 | 267 | return err; |
1da177e4 LT |
268 | out_rcu_unlock: |
269 | rcu_read_unlock(); | |
270 | goto out; | |
271 | } | |
272 | ||
273 | ||
274 | /* bind for INET6 API */ | |
275 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
276 | { | |
647c0c70 | 277 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
278 | struct sock *sk = sock->sk; |
279 | struct inet_sock *inet = inet_sk(sk); | |
280 | struct ipv6_pinfo *np = inet6_sk(sk); | |
3b1e0a65 | 281 | struct net *net = sock_net(sk); |
fd683222 | 282 | __be32 v4addr = 0; |
1da177e4 LT |
283 | unsigned short snum; |
284 | int addr_type = 0; | |
285 | int err = 0; | |
286 | ||
287 | /* If the socket has its own bind function then use it. */ | |
288 | if (sk->sk_prot->bind) | |
289 | return sk->sk_prot->bind(sk, uaddr, addr_len); | |
290 | ||
291 | if (addr_len < SIN6_LEN_RFC2133) | |
292 | return -EINVAL; | |
5a079c30 MM |
293 | |
294 | if (addr->sin6_family != AF_INET6) | |
c349a528 | 295 | return -EAFNOSUPPORT; |
5a079c30 | 296 | |
1da177e4 LT |
297 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
298 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) | |
299 | return -EINVAL; | |
300 | ||
301 | snum = ntohs(addr->sin6_port); | |
3594698a | 302 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
1da177e4 LT |
303 | return -EACCES; |
304 | ||
305 | lock_sock(sk); | |
306 | ||
307 | /* Check these errors (active socket, double bind). */ | |
c720c7e8 | 308 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
1da177e4 LT |
309 | err = -EINVAL; |
310 | goto out; | |
311 | } | |
312 | ||
313 | /* Check if the address belongs to the host. */ | |
314 | if (addr_type == IPV6_ADDR_MAPPED) { | |
63d9950b VY |
315 | int chk_addr_ret; |
316 | ||
783ed5a7 VY |
317 | /* Binding to v4-mapped address on a v6-only socket |
318 | * makes no sense | |
319 | */ | |
320 | if (np->ipv6only) { | |
321 | err = -EINVAL; | |
322 | goto out; | |
323 | } | |
63d9950b | 324 | |
a34f0b31 | 325 | /* Reproduce AF_INET checks to make the bindings consistent */ |
1da177e4 | 326 | v4addr = addr->sin6_addr.s6_addr32[3]; |
63d9950b VY |
327 | chk_addr_ret = inet_addr_type(net, v4addr); |
328 | if (!sysctl_ip_nonlocal_bind && | |
329 | !(inet->freebind || inet->transparent) && | |
330 | v4addr != htonl(INADDR_ANY) && | |
331 | chk_addr_ret != RTN_LOCAL && | |
332 | chk_addr_ret != RTN_MULTICAST && | |
ca6982b8 BP |
333 | chk_addr_ret != RTN_BROADCAST) { |
334 | err = -EADDRNOTAVAIL; | |
1da177e4 | 335 | goto out; |
ca6982b8 | 336 | } |
1da177e4 LT |
337 | } else { |
338 | if (addr_type != IPV6_ADDR_ANY) { | |
339 | struct net_device *dev = NULL; | |
340 | ||
16ba5e8e | 341 | rcu_read_lock(); |
842df073 | 342 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
343 | if (addr_len >= sizeof(struct sockaddr_in6) && |
344 | addr->sin6_scope_id) { | |
345 | /* Override any existing binding, if another one | |
346 | * is supplied by user. | |
347 | */ | |
348 | sk->sk_bound_dev_if = addr->sin6_scope_id; | |
349 | } | |
1ab1457c | 350 | |
1da177e4 LT |
351 | /* Binding to link-local address requires an interface */ |
352 | if (!sk->sk_bound_dev_if) { | |
353 | err = -EINVAL; | |
16ba5e8e | 354 | goto out_unlock; |
1da177e4 | 355 | } |
16ba5e8e | 356 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
1da177e4 LT |
357 | if (!dev) { |
358 | err = -ENODEV; | |
16ba5e8e | 359 | goto out_unlock; |
1da177e4 LT |
360 | } |
361 | } | |
362 | ||
363 | /* ipv4 addr of the socket is invalid. Only the | |
364 | * unspecified and mapped address have a v4 equivalent. | |
365 | */ | |
366 | v4addr = LOOPBACK4_IPV6; | |
367 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { | |
f74024d9 | 368 | if (!(inet->freebind || inet->transparent) && |
0a513f6a | 369 | !ipv6_chk_addr(net, &addr->sin6_addr, |
bfeade08 | 370 | dev, 0)) { |
1da177e4 | 371 | err = -EADDRNOTAVAIL; |
16ba5e8e | 372 | goto out_unlock; |
1da177e4 LT |
373 | } |
374 | } | |
16ba5e8e | 375 | rcu_read_unlock(); |
1da177e4 LT |
376 | } |
377 | } | |
378 | ||
c720c7e8 ED |
379 | inet->inet_rcv_saddr = v4addr; |
380 | inet->inet_saddr = v4addr; | |
1da177e4 | 381 | |
4e3fd7a0 | 382 | np->rcv_saddr = addr->sin6_addr; |
1ab1457c | 383 | |
1da177e4 | 384 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
4e3fd7a0 | 385 | np->saddr = addr->sin6_addr; |
1da177e4 LT |
386 | |
387 | /* Make sure we are allowed to bind here. */ | |
388 | if (sk->sk_prot->get_port(sk, snum)) { | |
389 | inet_reset_saddr(sk); | |
390 | err = -EADDRINUSE; | |
391 | goto out; | |
392 | } | |
393 | ||
0f8d3c7a | 394 | if (addr_type != IPV6_ADDR_ANY) { |
1da177e4 | 395 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
0f8d3c7a VY |
396 | if (addr_type != IPV6_ADDR_MAPPED) |
397 | np->ipv6only = 1; | |
398 | } | |
1da177e4 LT |
399 | if (snum) |
400 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
c720c7e8 ED |
401 | inet->inet_sport = htons(inet->inet_num); |
402 | inet->inet_dport = 0; | |
403 | inet->inet_daddr = 0; | |
1da177e4 LT |
404 | out: |
405 | release_sock(sk); | |
406 | return err; | |
16ba5e8e ED |
407 | out_unlock: |
408 | rcu_read_unlock(); | |
409 | goto out; | |
1da177e4 | 410 | } |
7159039a YH |
411 | EXPORT_SYMBOL(inet6_bind); |
412 | ||
1da177e4 LT |
413 | int inet6_release(struct socket *sock) |
414 | { | |
415 | struct sock *sk = sock->sk; | |
416 | ||
417 | if (sk == NULL) | |
418 | return -EINVAL; | |
419 | ||
420 | /* Free mc lists */ | |
421 | ipv6_sock_mc_close(sk); | |
422 | ||
423 | /* Free ac lists */ | |
424 | ipv6_sock_ac_close(sk); | |
425 | ||
426 | return inet_release(sock); | |
427 | } | |
7159039a YH |
428 | EXPORT_SYMBOL(inet6_release); |
429 | ||
7d06b2e0 | 430 | void inet6_destroy_sock(struct sock *sk) |
1da177e4 LT |
431 | { |
432 | struct ipv6_pinfo *np = inet6_sk(sk); | |
433 | struct sk_buff *skb; | |
434 | struct ipv6_txoptions *opt; | |
435 | ||
1da177e4 LT |
436 | /* Release rx options */ |
437 | ||
647c0c70 EZ |
438 | skb = xchg(&np->pktoptions, NULL); |
439 | if (skb != NULL) | |
1da177e4 | 440 | kfree_skb(skb); |
4b340ae2 | 441 | |
647c0c70 EZ |
442 | skb = xchg(&np->rxpmtu, NULL); |
443 | if (skb != NULL) | |
4b340ae2 | 444 | kfree_skb(skb); |
1da177e4 LT |
445 | |
446 | /* Free flowlabels */ | |
447 | fl6_free_socklist(sk); | |
448 | ||
449 | /* Free tx options */ | |
450 | ||
647c0c70 EZ |
451 | opt = xchg(&np->opt, NULL); |
452 | if (opt != NULL) | |
1da177e4 | 453 | sock_kfree_s(sk, opt, opt->tot_len); |
1da177e4 | 454 | } |
3cf3dc6c ACM |
455 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
456 | ||
1da177e4 LT |
457 | /* |
458 | * This does both peername and sockname. | |
459 | */ | |
1ab1457c | 460 | |
1da177e4 LT |
461 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
462 | int *uaddr_len, int peer) | |
463 | { | |
647c0c70 | 464 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
1da177e4 LT |
465 | struct sock *sk = sock->sk; |
466 | struct inet_sock *inet = inet_sk(sk); | |
467 | struct ipv6_pinfo *np = inet6_sk(sk); | |
1ab1457c | 468 | |
1da177e4 LT |
469 | sin->sin6_family = AF_INET6; |
470 | sin->sin6_flowinfo = 0; | |
471 | sin->sin6_scope_id = 0; | |
472 | if (peer) { | |
c720c7e8 | 473 | if (!inet->inet_dport) |
1da177e4 LT |
474 | return -ENOTCONN; |
475 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
476 | peer == 1) | |
477 | return -ENOTCONN; | |
c720c7e8 | 478 | sin->sin6_port = inet->inet_dport; |
4e3fd7a0 | 479 | sin->sin6_addr = np->daddr; |
1da177e4 LT |
480 | if (np->sndflow) |
481 | sin->sin6_flowinfo = np->flow_label; | |
482 | } else { | |
483 | if (ipv6_addr_any(&np->rcv_saddr)) | |
4e3fd7a0 | 484 | sin->sin6_addr = np->saddr; |
1da177e4 | 485 | else |
4e3fd7a0 | 486 | sin->sin6_addr = np->rcv_saddr; |
1da177e4 | 487 | |
c720c7e8 | 488 | sin->sin6_port = inet->inet_sport; |
1da177e4 | 489 | } |
842df073 HFS |
490 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
491 | sk->sk_bound_dev_if); | |
1da177e4 | 492 | *uaddr_len = sizeof(*sin); |
a02cec21 | 493 | return 0; |
1da177e4 | 494 | } |
7159039a YH |
495 | EXPORT_SYMBOL(inet6_getname); |
496 | ||
6fa3eb70 S |
497 | int inet6_killaddr_ioctl(struct net *net, void __user *arg) { |
498 | struct in6_ifreq ireq; | |
499 | struct sockaddr_in6 sin6; | |
500 | ||
501 | if (!capable(CAP_NET_ADMIN)) | |
502 | return -EACCES; | |
503 | ||
504 | if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq))) | |
505 | return -EFAULT; | |
506 | ||
507 | sin6.sin6_family = AF_INET6; | |
508 | sin6.sin6_addr = ireq.ifr6_addr; | |
509 | return tcp_nuke_addr(net, (struct sockaddr *) &sin6); | |
510 | } | |
511 | ||
1da177e4 LT |
512 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
513 | { | |
514 | struct sock *sk = sock->sk; | |
3b1e0a65 | 515 | struct net *net = sock_net(sk); |
1da177e4 | 516 | |
647c0c70 | 517 | switch (cmd) { |
1da177e4 LT |
518 | case SIOCGSTAMP: |
519 | return sock_get_timestamp(sk, (struct timeval __user *)arg); | |
520 | ||
ae40eb1e ED |
521 | case SIOCGSTAMPNS: |
522 | return sock_get_timestampns(sk, (struct timespec __user *)arg); | |
523 | ||
1da177e4 LT |
524 | case SIOCADDRT: |
525 | case SIOCDELRT: | |
1ab1457c | 526 | |
a02cec21 | 527 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
1da177e4 LT |
528 | |
529 | case SIOCSIFADDR: | |
af284937 | 530 | return addrconf_add_ifaddr(net, (void __user *) arg); |
1da177e4 | 531 | case SIOCDIFADDR: |
af284937 | 532 | return addrconf_del_ifaddr(net, (void __user *) arg); |
1da177e4 | 533 | case SIOCSIFDSTADDR: |
af284937 | 534 | return addrconf_set_dstaddr(net, (void __user *) arg); |
6fa3eb70 S |
535 | case SIOCKILLADDR: |
536 | return inet6_killaddr_ioctl(net, (void __user *) arg); | |
1da177e4 | 537 | default: |
b5e5fa5e CH |
538 | if (!sk->sk_prot->ioctl) |
539 | return -ENOIOCTLCMD; | |
540 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
1da177e4 LT |
541 | } |
542 | /*NOTREACHED*/ | |
a02cec21 | 543 | return 0; |
1da177e4 | 544 | } |
7159039a YH |
545 | EXPORT_SYMBOL(inet6_ioctl); |
546 | ||
90ddc4f0 | 547 | const struct proto_ops inet6_stream_ops = { |
543d9cfe ACM |
548 | .family = PF_INET6, |
549 | .owner = THIS_MODULE, | |
550 | .release = inet6_release, | |
551 | .bind = inet6_bind, | |
552 | .connect = inet_stream_connect, /* ok */ | |
553 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
554 | .accept = inet_accept, /* ok */ | |
555 | .getname = inet6_getname, | |
556 | .poll = tcp_poll, /* ok */ | |
557 | .ioctl = inet6_ioctl, /* must change */ | |
558 | .listen = inet_listen, /* ok */ | |
559 | .shutdown = inet_shutdown, /* ok */ | |
560 | .setsockopt = sock_common_setsockopt, /* ok */ | |
561 | .getsockopt = sock_common_getsockopt, /* ok */ | |
7ba42910 CG |
562 | .sendmsg = inet_sendmsg, /* ok */ |
563 | .recvmsg = inet_recvmsg, /* ok */ | |
543d9cfe | 564 | .mmap = sock_no_mmap, |
7ba42910 | 565 | .sendpage = inet_sendpage, |
a0974dd3 | 566 | .splice_read = tcp_splice_read, |
3fdadf7d | 567 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
568 | .compat_setsockopt = compat_sock_common_setsockopt, |
569 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 570 | #endif |
1da177e4 LT |
571 | }; |
572 | ||
90ddc4f0 | 573 | const struct proto_ops inet6_dgram_ops = { |
543d9cfe ACM |
574 | .family = PF_INET6, |
575 | .owner = THIS_MODULE, | |
576 | .release = inet6_release, | |
577 | .bind = inet6_bind, | |
578 | .connect = inet_dgram_connect, /* ok */ | |
579 | .socketpair = sock_no_socketpair, /* a do nothing */ | |
580 | .accept = sock_no_accept, /* a do nothing */ | |
581 | .getname = inet6_getname, | |
582 | .poll = udp_poll, /* ok */ | |
583 | .ioctl = inet6_ioctl, /* must change */ | |
584 | .listen = sock_no_listen, /* ok */ | |
585 | .shutdown = inet_shutdown, /* ok */ | |
586 | .setsockopt = sock_common_setsockopt, /* ok */ | |
587 | .getsockopt = sock_common_getsockopt, /* ok */ | |
588 | .sendmsg = inet_sendmsg, /* ok */ | |
7ba42910 | 589 | .recvmsg = inet_recvmsg, /* ok */ |
543d9cfe ACM |
590 | .mmap = sock_no_mmap, |
591 | .sendpage = sock_no_sendpage, | |
3fdadf7d | 592 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
593 | .compat_setsockopt = compat_sock_common_setsockopt, |
594 | .compat_getsockopt = compat_sock_common_getsockopt, | |
3fdadf7d | 595 | #endif |
1da177e4 LT |
596 | }; |
597 | ||
ec1b4cf7 | 598 | static const struct net_proto_family inet6_family_ops = { |
1da177e4 LT |
599 | .family = PF_INET6, |
600 | .create = inet6_create, | |
601 | .owner = THIS_MODULE, | |
602 | }; | |
603 | ||
87c3efbf | 604 | int inet6_register_protosw(struct inet_protosw *p) |
1da177e4 LT |
605 | { |
606 | struct list_head *lh; | |
607 | struct inet_protosw *answer; | |
1da177e4 | 608 | struct list_head *last_perm; |
87c3efbf DL |
609 | int protocol = p->protocol; |
610 | int ret; | |
1da177e4 LT |
611 | |
612 | spin_lock_bh(&inetsw6_lock); | |
613 | ||
87c3efbf | 614 | ret = -EINVAL; |
1da177e4 LT |
615 | if (p->type >= SOCK_MAX) |
616 | goto out_illegal; | |
617 | ||
618 | /* If we are trying to override a permanent protocol, bail. */ | |
619 | answer = NULL; | |
87c3efbf | 620 | ret = -EPERM; |
1da177e4 LT |
621 | last_perm = &inetsw6[p->type]; |
622 | list_for_each(lh, &inetsw6[p->type]) { | |
623 | answer = list_entry(lh, struct inet_protosw, list); | |
624 | ||
625 | /* Check only the non-wild match. */ | |
626 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
627 | if (protocol == answer->protocol) | |
628 | break; | |
629 | last_perm = lh; | |
630 | } | |
631 | ||
632 | answer = NULL; | |
633 | } | |
634 | if (answer) | |
635 | goto out_permanent; | |
636 | ||
637 | /* Add the new entry after the last permanent entry if any, so that | |
638 | * the new entry does not override a permanent entry when matched with | |
639 | * a wild-card protocol. But it is allowed to override any existing | |
1ab1457c | 640 | * non-permanent entry. This means that when we remove this entry, the |
1da177e4 LT |
641 | * system automatically returns to the old behavior. |
642 | */ | |
643 | list_add_rcu(&p->list, last_perm); | |
87c3efbf | 644 | ret = 0; |
1da177e4 LT |
645 | out: |
646 | spin_unlock_bh(&inetsw6_lock); | |
87c3efbf | 647 | return ret; |
1da177e4 LT |
648 | |
649 | out_permanent: | |
f3213831 | 650 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
1da177e4 LT |
651 | goto out; |
652 | ||
653 | out_illegal: | |
f3213831 | 654 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
1da177e4 LT |
655 | p->type); |
656 | goto out; | |
657 | } | |
7159039a YH |
658 | EXPORT_SYMBOL(inet6_register_protosw); |
659 | ||
1da177e4 LT |
660 | void |
661 | inet6_unregister_protosw(struct inet_protosw *p) | |
662 | { | |
663 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
f3213831 | 664 | pr_err("Attempt to unregister permanent protocol %d\n", |
1da177e4 LT |
665 | p->protocol); |
666 | } else { | |
667 | spin_lock_bh(&inetsw6_lock); | |
668 | list_del_rcu(&p->list); | |
669 | spin_unlock_bh(&inetsw6_lock); | |
670 | ||
671 | synchronize_net(); | |
672 | } | |
673 | } | |
7159039a YH |
674 | EXPORT_SYMBOL(inet6_unregister_protosw); |
675 | ||
b9750ce1 ACM |
676 | int inet6_sk_rebuild_header(struct sock *sk) |
677 | { | |
b9750ce1 | 678 | struct ipv6_pinfo *np = inet6_sk(sk); |
68d0c6d3 | 679 | struct dst_entry *dst; |
b9750ce1 ACM |
680 | |
681 | dst = __sk_dst_check(sk, np->dst_cookie); | |
682 | ||
683 | if (dst == NULL) { | |
684 | struct inet_sock *inet = inet_sk(sk); | |
20c59de2 | 685 | struct in6_addr *final_p, final; |
4c9483b2 DM |
686 | struct flowi6 fl6; |
687 | ||
688 | memset(&fl6, 0, sizeof(fl6)); | |
689 | fl6.flowi6_proto = sk->sk_protocol; | |
4e3fd7a0 AD |
690 | fl6.daddr = np->daddr; |
691 | fl6.saddr = np->saddr; | |
4c9483b2 DM |
692 | fl6.flowlabel = np->flow_label; |
693 | fl6.flowi6_oif = sk->sk_bound_dev_if; | |
694 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
695 | fl6.fl6_dport = inet->inet_dport; |
696 | fl6.fl6_sport = inet->inet_sport; | |
6fa3eb70 | 697 | fl6.flowi6_uid = sock_i_uid(sk); |
4c9483b2 DM |
698 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
699 | ||
700 | final_p = fl6_update_dst(&fl6, np->opt, &final); | |
701 | ||
702 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); | |
68d0c6d3 | 703 | if (IS_ERR(dst)) { |
b9750ce1 | 704 | sk->sk_route_caps = 0; |
68d0c6d3 DM |
705 | sk->sk_err_soft = -PTR_ERR(dst); |
706 | return PTR_ERR(dst); | |
b9750ce1 ACM |
707 | } |
708 | ||
8e1ef0a9 | 709 | __ip6_dst_store(sk, dst, NULL, NULL); |
b9750ce1 ACM |
710 | } |
711 | ||
712 | return 0; | |
713 | } | |
b9750ce1 ACM |
714 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
715 | ||
92113bfd | 716 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb) |
399c07de | 717 | { |
92113bfd ED |
718 | const struct ipv6_pinfo *np = inet6_sk(sk); |
719 | const struct inet6_skb_parm *opt = IP6CB(skb); | |
399c07de ACM |
720 | |
721 | if (np->rxopt.all) { | |
722 | if ((opt->hop && (np->rxopt.bits.hopopts || | |
723 | np->rxopt.bits.ohopopts)) || | |
d56f90a7 ACM |
724 | ((IPV6_FLOWINFO_MASK & |
725 | *(__be32 *)skb_network_header(skb)) && | |
399c07de ACM |
726 | np->rxopt.bits.rxflow) || |
727 | (opt->srcrt && (np->rxopt.bits.srcrt || | |
728 | np->rxopt.bits.osrcrt)) || | |
729 | ((opt->dst1 || opt->dst0) && | |
730 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) | |
92113bfd | 731 | return true; |
399c07de | 732 | } |
92113bfd | 733 | return false; |
399c07de | 734 | } |
399c07de ACM |
735 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
736 | ||
7546dd97 | 737 | static struct packet_type ipv6_packet_type __read_mostly = { |
09640e63 | 738 | .type = cpu_to_be16(ETH_P_IPV6), |
662397fd | 739 | .func = ipv6_rcv, |
22061d80 VY |
740 | }; |
741 | ||
662397fd YH |
742 | static int __init ipv6_packet_init(void) |
743 | { | |
744 | dev_add_pack(&ipv6_packet_type); | |
745 | return 0; | |
746 | } | |
747 | ||
748 | static void ipv6_packet_cleanup(void) | |
749 | { | |
750 | dev_remove_pack(&ipv6_packet_type); | |
751 | } | |
752 | ||
e43291cb DL |
753 | static int __net_init ipv6_init_mibs(struct net *net) |
754 | { | |
7d720c3e | 755 | if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6, |
1823e4c8 ED |
756 | sizeof(struct udp_mib), |
757 | __alignof__(struct udp_mib)) < 0) | |
0c7ed677 | 758 | return -ENOMEM; |
7d720c3e | 759 | if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6, |
1823e4c8 ED |
760 | sizeof(struct udp_mib), |
761 | __alignof__(struct udp_mib)) < 0) | |
be713a44 | 762 | goto err_udplite_mib; |
7d720c3e | 763 | if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics, |
1823e4c8 ED |
764 | sizeof(struct ipstats_mib), |
765 | __alignof__(struct ipstats_mib)) < 0) | |
9261e537 | 766 | goto err_ip_mib; |
7d720c3e | 767 | if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics, |
1823e4c8 ED |
768 | sizeof(struct icmpv6_mib), |
769 | __alignof__(struct icmpv6_mib)) < 0) | |
9261e537 | 770 | goto err_icmp_mib; |
2a24444f ED |
771 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
772 | GFP_KERNEL); | |
773 | if (!net->mib.icmpv6msg_statistics) | |
9261e537 | 774 | goto err_icmpmsg_mib; |
e43291cb | 775 | return 0; |
be713a44 | 776 | |
9261e537 | 777 | err_icmpmsg_mib: |
7d720c3e | 778 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
9261e537 | 779 | err_icmp_mib: |
7d720c3e | 780 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
9261e537 | 781 | err_ip_mib: |
7d720c3e | 782 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
be713a44 | 783 | err_udplite_mib: |
7d720c3e | 784 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
be713a44 | 785 | return -ENOMEM; |
e43291cb DL |
786 | } |
787 | ||
2c8c1e72 | 788 | static void ipv6_cleanup_mibs(struct net *net) |
e43291cb | 789 | { |
7d720c3e TH |
790 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
791 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); | |
792 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); | |
793 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); | |
2a24444f | 794 | kfree(net->mib.icmpv6msg_statistics); |
e43291cb DL |
795 | } |
796 | ||
e7dc8494 | 797 | static int __net_init inet6_net_init(struct net *net) |
81c1c178 | 798 | { |
0c96d8c5 DL |
799 | int err = 0; |
800 | ||
99bc9c4e | 801 | net->ipv6.sysctl.bindv6only = 0; |
41a76906 | 802 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
e71e0349 | 803 | |
e43291cb DL |
804 | err = ipv6_init_mibs(net); |
805 | if (err) | |
806 | return err; | |
0c96d8c5 DL |
807 | #ifdef CONFIG_PROC_FS |
808 | err = udp6_proc_init(net); | |
809 | if (err) | |
810 | goto out; | |
6f8b13bc DL |
811 | err = tcp6_proc_init(net); |
812 | if (err) | |
813 | goto proc_tcp6_fail; | |
6ab57e7e DL |
814 | err = ac6_proc_init(net); |
815 | if (err) | |
816 | goto proc_ac6_fail; | |
0c96d8c5 DL |
817 | #endif |
818 | return err; | |
6f8b13bc DL |
819 | |
820 | #ifdef CONFIG_PROC_FS | |
6ab57e7e DL |
821 | proc_ac6_fail: |
822 | tcp6_proc_exit(net); | |
6f8b13bc DL |
823 | proc_tcp6_fail: |
824 | udp6_proc_exit(net); | |
e43291cb DL |
825 | out: |
826 | ipv6_cleanup_mibs(net); | |
827 | return err; | |
6f8b13bc | 828 | #endif |
81c1c178 DL |
829 | } |
830 | ||
2c8c1e72 | 831 | static void __net_exit inet6_net_exit(struct net *net) |
81c1c178 | 832 | { |
0c96d8c5 DL |
833 | #ifdef CONFIG_PROC_FS |
834 | udp6_proc_exit(net); | |
6f8b13bc | 835 | tcp6_proc_exit(net); |
6ab57e7e | 836 | ac6_proc_exit(net); |
0c96d8c5 | 837 | #endif |
e43291cb | 838 | ipv6_cleanup_mibs(net); |
81c1c178 DL |
839 | } |
840 | ||
841 | static struct pernet_operations inet6_net_ops = { | |
842 | .init = inet6_net_init, | |
843 | .exit = inet6_net_exit, | |
844 | }; | |
845 | ||
1da177e4 LT |
846 | static int __init inet6_init(void) |
847 | { | |
1ab1457c | 848 | struct list_head *r; |
fe7ca2e1 | 849 | int err = 0; |
1da177e4 | 850 | |
ba96bcbc | 851 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb)); |
ef047f5e | 852 | |
fe7ca2e1 | 853 | /* Register the socket-side information for inet6_create. */ |
647c0c70 | 854 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
fe7ca2e1 BH |
855 | INIT_LIST_HEAD(r); |
856 | ||
56d417b1 | 857 | if (disable_ipv6_mod) { |
f3213831 | 858 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
fe7ca2e1 BH |
859 | goto out; |
860 | } | |
861 | ||
1da177e4 LT |
862 | err = proto_register(&tcpv6_prot, 1); |
863 | if (err) | |
864 | goto out; | |
865 | ||
866 | err = proto_register(&udpv6_prot, 1); | |
867 | if (err) | |
868 | goto out_unregister_tcp_proto; | |
869 | ||
ba4e58ec | 870 | err = proto_register(&udplitev6_prot, 1); |
1da177e4 LT |
871 | if (err) |
872 | goto out_unregister_udp_proto; | |
873 | ||
ba4e58ec GR |
874 | err = proto_register(&rawv6_prot, 1); |
875 | if (err) | |
876 | goto out_unregister_udplite_proto; | |
877 | ||
6fa3eb70 S |
878 | err = proto_register(&pingv6_prot, 1); |
879 | if (err) | |
880 | goto out_unregister_ping_proto; | |
1da177e4 | 881 | |
1da177e4 LT |
882 | /* We MUST register RAW sockets before we create the ICMP6, |
883 | * IGMP6, or NDISC control sockets. | |
884 | */ | |
7f4e4868 DL |
885 | err = rawv6_init(); |
886 | if (err) | |
887 | goto out_unregister_raw_proto; | |
1da177e4 LT |
888 | |
889 | /* Register the family here so that the init calls below will | |
890 | * be able to create sockets. (?? is this dangerous ??) | |
891 | */ | |
8eb55910 DM |
892 | err = sock_register(&inet6_family_ops); |
893 | if (err) | |
7f4e4868 | 894 | goto out_sock_register_fail; |
1da177e4 | 895 | |
3dc43e3e GC |
896 | tcpv6_prot.sysctl_mem = init_net.ipv4.sysctl_tcp_mem; |
897 | ||
1da177e4 LT |
898 | /* |
899 | * ipngwg API draft makes clear that the correct semantics | |
900 | * for TCP and UDP is to consider one TCP and UDP instance | |
25985edc | 901 | * in a host available by both INET and INET6 APIs and |
1da177e4 LT |
902 | * able to communicate via both network protocols. |
903 | */ | |
904 | ||
81c1c178 DL |
905 | err = register_pernet_subsys(&inet6_net_ops); |
906 | if (err) | |
907 | goto register_pernet_fail; | |
9b0f976f | 908 | err = icmpv6_init(); |
1da177e4 LT |
909 | if (err) |
910 | goto icmp_fail; | |
623d1a1a WC |
911 | err = ip6_mr_init(); |
912 | if (err) | |
913 | goto ipmr_fail; | |
9b0f976f | 914 | err = ndisc_init(); |
1da177e4 LT |
915 | if (err) |
916 | goto ndisc_fail; | |
9b0f976f | 917 | err = igmp6_init(); |
1da177e4 LT |
918 | if (err) |
919 | goto igmp_fail; | |
2cc7d573 HW |
920 | err = ipv6_netfilter_init(); |
921 | if (err) | |
922 | goto netfilter_fail; | |
1da177e4 LT |
923 | /* Create /proc/foo6 entries. */ |
924 | #ifdef CONFIG_PROC_FS | |
925 | err = -ENOMEM; | |
926 | if (raw6_proc_init()) | |
927 | goto proc_raw6_fail; | |
ba4e58ec GR |
928 | if (udplite6_proc_init()) |
929 | goto proc_udplite6_fail; | |
1da177e4 LT |
930 | if (ipv6_misc_proc_init()) |
931 | goto proc_misc6_fail; | |
1da177e4 LT |
932 | if (if6_proc_init()) |
933 | goto proc_if6_fail; | |
934 | #endif | |
e2fddf5e DL |
935 | err = ip6_route_init(); |
936 | if (err) | |
937 | goto ip6_route_fail; | |
0a3e78ac DL |
938 | err = ip6_flowlabel_init(); |
939 | if (err) | |
940 | goto ip6_flowlabel_fail; | |
1da177e4 LT |
941 | err = addrconf_init(); |
942 | if (err) | |
943 | goto addrconf_fail; | |
1da177e4 LT |
944 | |
945 | /* Init v6 extension headers. */ | |
248b238d DL |
946 | err = ipv6_exthdrs_init(); |
947 | if (err) | |
948 | goto ipv6_exthdrs_fail; | |
949 | ||
853cbbaa DL |
950 | err = ipv6_frag_init(); |
951 | if (err) | |
952 | goto ipv6_frag_fail; | |
1da177e4 LT |
953 | |
954 | /* Init v6 transport protocols. */ | |
7f4e4868 DL |
955 | err = udpv6_init(); |
956 | if (err) | |
957 | goto udpv6_fail; | |
e2ed4052 | 958 | |
7f4e4868 DL |
959 | err = udplitev6_init(); |
960 | if (err) | |
961 | goto udplitev6_fail; | |
962 | ||
963 | err = tcpv6_init(); | |
964 | if (err) | |
965 | goto tcpv6_fail; | |
966 | ||
967 | err = ipv6_packet_init(); | |
968 | if (err) | |
969 | goto ipv6_packet_fail; | |
94911fe3 | 970 | |
6fa3eb70 S |
971 | err = pingv6_init(); |
972 | if (err) | |
973 | goto pingv6_fail; | |
974 | ||
94911fe3 BT |
975 | #ifdef CONFIG_SYSCTL |
976 | err = ipv6_sysctl_register(); | |
977 | if (err) | |
978 | goto sysctl_fail; | |
979 | #endif | |
1da177e4 LT |
980 | out: |
981 | return err; | |
982 | ||
94911fe3 BT |
983 | #ifdef CONFIG_SYSCTL |
984 | sysctl_fail: | |
985 | ipv6_packet_cleanup(); | |
986 | #endif | |
6fa3eb70 S |
987 | pingv6_fail: |
988 | pingv6_exit(); | |
7f4e4868 DL |
989 | ipv6_packet_fail: |
990 | tcpv6_exit(); | |
991 | tcpv6_fail: | |
992 | udplitev6_exit(); | |
993 | udplitev6_fail: | |
994 | udpv6_exit(); | |
995 | udpv6_fail: | |
996 | ipv6_frag_exit(); | |
853cbbaa DL |
997 | ipv6_frag_fail: |
998 | ipv6_exthdrs_exit(); | |
248b238d DL |
999 | ipv6_exthdrs_fail: |
1000 | addrconf_cleanup(); | |
1da177e4 LT |
1001 | addrconf_fail: |
1002 | ip6_flowlabel_cleanup(); | |
0a3e78ac | 1003 | ip6_flowlabel_fail: |
1da177e4 | 1004 | ip6_route_cleanup(); |
e2fddf5e | 1005 | ip6_route_fail: |
1da177e4 LT |
1006 | #ifdef CONFIG_PROC_FS |
1007 | if6_proc_exit(); | |
1008 | proc_if6_fail: | |
1da177e4 LT |
1009 | ipv6_misc_proc_exit(); |
1010 | proc_misc6_fail: | |
ba4e58ec GR |
1011 | udplite6_proc_exit(); |
1012 | proc_udplite6_fail: | |
1da177e4 LT |
1013 | raw6_proc_exit(); |
1014 | proc_raw6_fail: | |
1015 | #endif | |
2cc7d573 HW |
1016 | ipv6_netfilter_fini(); |
1017 | netfilter_fail: | |
1da177e4 LT |
1018 | igmp6_cleanup(); |
1019 | igmp_fail: | |
1020 | ndisc_cleanup(); | |
1021 | ndisc_fail: | |
623d1a1a WC |
1022 | ip6_mr_cleanup(); |
1023 | ipmr_fail: | |
1da177e4 LT |
1024 | icmpv6_cleanup(); |
1025 | icmp_fail: | |
81c1c178 DL |
1026 | unregister_pernet_subsys(&inet6_net_ops); |
1027 | register_pernet_fail: | |
8eb55910 | 1028 | sock_unregister(PF_INET6); |
e2fddf5e | 1029 | rtnl_unregister_all(PF_INET6); |
7f4e4868 DL |
1030 | out_sock_register_fail: |
1031 | rawv6_exit(); | |
6fa3eb70 S |
1032 | out_unregister_ping_proto: |
1033 | proto_unregister(&pingv6_prot); | |
1da177e4 LT |
1034 | out_unregister_raw_proto: |
1035 | proto_unregister(&rawv6_prot); | |
ba4e58ec GR |
1036 | out_unregister_udplite_proto: |
1037 | proto_unregister(&udplitev6_prot); | |
1da177e4 LT |
1038 | out_unregister_udp_proto: |
1039 | proto_unregister(&udpv6_prot); | |
1040 | out_unregister_tcp_proto: | |
1041 | proto_unregister(&tcpv6_prot); | |
1042 | goto out; | |
1043 | } | |
1044 | module_init(inet6_init); | |
1045 | ||
1046 | static void __exit inet6_exit(void) | |
1047 | { | |
56d417b1 | 1048 | if (disable_ipv6_mod) |
ff8cf9a9 JD |
1049 | return; |
1050 | ||
1da177e4 LT |
1051 | /* First of all disallow new sockets creation. */ |
1052 | sock_unregister(PF_INET6); | |
c127ea2c TG |
1053 | /* Disallow any further netlink messages */ |
1054 | rtnl_unregister_all(PF_INET6); | |
ca17c233 | 1055 | |
7f4e4868 DL |
1056 | udpv6_exit(); |
1057 | udplitev6_exit(); | |
1058 | tcpv6_exit(); | |
1059 | ||
ca17c233 JJ |
1060 | /* Cleanup code parts. */ |
1061 | ipv6_packet_cleanup(); | |
853cbbaa | 1062 | ipv6_frag_exit(); |
248b238d | 1063 | ipv6_exthdrs_exit(); |
ca17c233 JJ |
1064 | addrconf_cleanup(); |
1065 | ip6_flowlabel_cleanup(); | |
1066 | ip6_route_cleanup(); | |
1da177e4 | 1067 | #ifdef CONFIG_PROC_FS |
ca17c233 JJ |
1068 | |
1069 | /* Cleanup code parts. */ | |
1da177e4 | 1070 | if6_proc_exit(); |
1ab1457c | 1071 | ipv6_misc_proc_exit(); |
1ab1457c | 1072 | udplite6_proc_exit(); |
1ab1457c | 1073 | raw6_proc_exit(); |
2c8d7ca0 | 1074 | #endif |
2cc7d573 | 1075 | ipv6_netfilter_fini(); |
ca17c233 | 1076 | igmp6_cleanup(); |
1da177e4 | 1077 | ndisc_cleanup(); |
623d1a1a | 1078 | ip6_mr_cleanup(); |
1da177e4 | 1079 | icmpv6_cleanup(); |
7f4e4868 | 1080 | rawv6_exit(); |
94911fe3 | 1081 | |
81c1c178 | 1082 | unregister_pernet_subsys(&inet6_net_ops); |
1da177e4 | 1083 | proto_unregister(&rawv6_prot); |
ca17c233 | 1084 | proto_unregister(&udplitev6_prot); |
1da177e4 LT |
1085 | proto_unregister(&udpv6_prot); |
1086 | proto_unregister(&tcpv6_prot); | |
1f2ccd00 JDB |
1087 | |
1088 | rcu_barrier(); /* Wait for completion of call_rcu()'s */ | |
1da177e4 LT |
1089 | } |
1090 | module_exit(inet6_exit); | |
1091 | ||
1092 | MODULE_ALIAS_NETPROTO(PF_INET6); |