Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PF_INET6 socket protocol family |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 3 | * Linux INET6 implementation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * Authors: |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 6 | * Pedro Roque <roque@di.fc.ul.pt> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * Adapted from linux/net/ipv4/af_inet.c |
| 9 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 21 | |
| 22 | #include <linux/module.h> |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 23 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/errno.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/socket.h> |
| 27 | #include <linux/in.h> |
| 28 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/timer.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/sockios.h> |
| 32 | #include <linux/net.h> |
| 33 | #include <linux/fcntl.h> |
| 34 | #include <linux/mm.h> |
| 35 | #include <linux/interrupt.h> |
| 36 | #include <linux/proc_fs.h> |
| 37 | #include <linux/stat.h> |
| 38 | #include <linux/init.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 39 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | #include <linux/inet.h> |
| 42 | #include <linux/netdevice.h> |
| 43 | #include <linux/icmpv6.h> |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 44 | #include <linux/netfilter_ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #include <net/ip.h> |
| 47 | #include <net/ipv6.h> |
| 48 | #include <net/udp.h> |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 49 | #include <net/udplite.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include <net/tcp.h> |
| 51 | #include <net/ipip.h> |
| 52 | #include <net/protocol.h> |
| 53 | #include <net/inet_common.h> |
KOVACS Krisztian | 1668e01 | 2008-10-01 07:33:10 -0700 | [diff] [blame] | 54 | #include <net/route.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
| 63 | #include <asm/system.h> |
YOSHIFUJI Hideaki | 7bc570c | 2008-04-03 09:22:53 +0900 | [diff] [blame] | 64 | #include <linux/mroute6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | MODULE_AUTHOR("Cast of dozens"); |
| 67 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); |
| 68 | MODULE_LICENSE("GPL"); |
| 69 | |
Pavel Emelyanov | f126734 | 2007-11-23 21:28:44 +0800 | [diff] [blame] | 70 | /* The inetsw6 table contains everything that inet6_create needs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | * build a new socket. |
| 72 | */ |
| 73 | static struct list_head inetsw6[SOCK_MAX]; |
| 74 | static DEFINE_SPINLOCK(inetsw6_lock); |
| 75 | |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 76 | struct ipv6_params ipv6_defaults = { |
| 77 | .disable_ipv6 = 0, |
| 78 | .autoconf = 1, |
| 79 | }; |
| 80 | |
| 81 | static int disable_ipv6_mod = 0; |
| 82 | |
| 83 | module_param_named(disable, disable_ipv6_mod, int, 0444); |
| 84 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); |
| 85 | |
| 86 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); |
| 87 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); |
| 88 | |
| 89 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); |
| 90 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
| 93 | { |
| 94 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); |
| 95 | |
| 96 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); |
| 97 | } |
| 98 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 99 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
| 100 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | { |
| 102 | struct inet_sock *inet; |
| 103 | struct ipv6_pinfo *np; |
| 104 | struct sock *sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | struct inet_protosw *answer; |
| 106 | struct proto *answer_prot; |
| 107 | unsigned char answer_flags; |
| 108 | char answer_no_check; |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 109 | int try_loading_module = 0; |
| 110 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
David S. Miller | b3da2cf | 2007-03-23 11:40:27 -0700 | [diff] [blame] | 112 | if (sock->type != SOCK_RAW && |
| 113 | sock->type != SOCK_DGRAM && |
| 114 | !inet_ehash_secret) |
| 115 | build_ehash_secret(); |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | /* Look for the requested type/protocol pair. */ |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 118 | lookup_protocol: |
| 119 | err = -ESOCKTNOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | rcu_read_lock(); |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 121 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 123 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /* Check the non-wild match. */ |
| 125 | if (protocol == answer->protocol) { |
| 126 | if (protocol != IPPROTO_IP) |
| 127 | break; |
| 128 | } else { |
| 129 | /* Check for the two wild cases. */ |
| 130 | if (IPPROTO_IP == protocol) { |
| 131 | protocol = answer->protocol; |
| 132 | break; |
| 133 | } |
| 134 | if (IPPROTO_IP == answer->protocol) |
| 135 | break; |
| 136 | } |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 137 | err = -EPROTONOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | } |
| 139 | |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 140 | if (err) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 141 | if (try_loading_module < 2) { |
| 142 | rcu_read_unlock(); |
| 143 | /* |
| 144 | * Be more specific, e.g. net-pf-10-proto-132-type-1 |
| 145 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) |
| 146 | */ |
| 147 | if (++try_loading_module == 1) |
| 148 | request_module("net-pf-%d-proto-%d-type-%d", |
| 149 | PF_INET6, protocol, sock->type); |
| 150 | /* |
| 151 | * Fall back to generic, e.g. net-pf-10-proto-132 |
| 152 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) |
| 153 | */ |
| 154 | else |
| 155 | request_module("net-pf-%d-proto-%d", |
| 156 | PF_INET6, protocol); |
| 157 | goto lookup_protocol; |
| 158 | } else |
| 159 | goto out_rcu_unlock; |
| 160 | } |
| 161 | |
| 162 | err = -EPERM; |
Eric Paris | c84b326 | 2009-11-05 20:45:52 -0800 | [diff] [blame] | 163 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | goto out_rcu_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | sock->ops = answer->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | answer_prot = answer->prot; |
| 168 | answer_no_check = answer->no_check; |
| 169 | answer_flags = answer->flags; |
| 170 | rcu_read_unlock(); |
| 171 | |
Ilpo Järvinen | 547b792 | 2008-07-25 21:43:18 -0700 | [diff] [blame] | 172 | WARN_ON(answer_prot->slab == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 174 | err = -ENOBUFS; |
Pavel Emelyanov | 6257ff2 | 2007-11-01 00:39:31 -0700 | [diff] [blame] | 175 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | if (sk == NULL) |
| 177 | goto out; |
| 178 | |
| 179 | sock_init_data(sock, sk); |
| 180 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 181 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | sk->sk_no_check = answer_no_check; |
| 183 | if (INET_PROTOSW_REUSE & answer_flags) |
| 184 | sk->sk_reuse = 1; |
| 185 | |
| 186 | inet = inet_sk(sk); |
Paul Moore | 469de9b | 2007-01-09 14:37:06 -0800 | [diff] [blame] | 187 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
| 189 | if (SOCK_RAW == sock->type) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 190 | inet->inet_num = protocol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | if (IPPROTO_RAW == protocol) |
| 192 | inet->hdrincl = 1; |
| 193 | } |
| 194 | |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 195 | sk->sk_destruct = inet_sock_destruct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | sk->sk_family = PF_INET6; |
| 197 | sk->sk_protocol = protocol; |
| 198 | |
| 199 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; |
| 200 | |
| 201 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); |
| 202 | np->hop_limit = -1; |
David S. Miller | f935aa9 | 2010-05-03 23:42:27 -0700 | [diff] [blame] | 203 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | np->mc_loop = 1; |
| 205 | np->pmtudisc = IPV6_PMTUDISC_WANT; |
Pavel Emelyanov | 2e761e0 | 2008-06-09 15:53:30 -0700 | [diff] [blame] | 206 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | /* Init the ipv4 part of the socket since we can have sockets |
| 209 | * using v6 API for ipv4. |
| 210 | */ |
| 211 | inet->uc_ttl = -1; |
| 212 | |
| 213 | inet->mc_loop = 1; |
| 214 | inet->mc_ttl = 1; |
| 215 | inet->mc_index = 0; |
| 216 | inet->mc_list = NULL; |
| 217 | |
| 218 | if (ipv4_config.no_pmtu_disc) |
| 219 | inet->pmtudisc = IP_PMTUDISC_DONT; |
| 220 | else |
| 221 | inet->pmtudisc = IP_PMTUDISC_WANT; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 222 | /* |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 223 | * Increment only the relevant sk_prot->socks debug field, this changes |
| 224 | * the previous behaviour of incrementing both the equivalent to |
| 225 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. |
| 226 | * |
| 227 | * This allows better debug granularity as we'll know exactly how many |
| 228 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 |
| 229 | * transport protocol socks. -acme |
| 230 | */ |
| 231 | sk_refcnt_debug_inc(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 233 | if (inet->inet_num) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | /* It assumes that any protocol which allows |
| 235 | * the user to assign a number at socket |
| 236 | * creation time automatically shares. |
| 237 | */ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 238 | inet->inet_sport = htons(inet->inet_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | sk->sk_prot->hash(sk); |
| 240 | } |
| 241 | if (sk->sk_prot->init) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 242 | err = sk->sk_prot->init(sk); |
| 243 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | sk_common_release(sk); |
| 245 | goto out; |
| 246 | } |
| 247 | } |
| 248 | out: |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 249 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | out_rcu_unlock: |
| 251 | rcu_read_unlock(); |
| 252 | goto out; |
| 253 | } |
| 254 | |
| 255 | |
| 256 | /* bind for INET6 API */ |
| 257 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) |
| 258 | { |
| 259 | struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; |
| 260 | struct sock *sk = sock->sk; |
| 261 | struct inet_sock *inet = inet_sk(sk); |
| 262 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 263 | struct net *net = sock_net(sk); |
Al Viro | fd68322 | 2006-09-26 22:17:51 -0700 | [diff] [blame] | 264 | __be32 v4addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | unsigned short snum; |
| 266 | int addr_type = 0; |
| 267 | int err = 0; |
| 268 | |
| 269 | /* If the socket has its own bind function then use it. */ |
| 270 | if (sk->sk_prot->bind) |
| 271 | return sk->sk_prot->bind(sk, uaddr, addr_len); |
| 272 | |
| 273 | if (addr_len < SIN6_LEN_RFC2133) |
| 274 | return -EINVAL; |
Marcus Meissner | 5a079c3 | 2011-06-06 06:00:07 +0000 | [diff] [blame] | 275 | |
| 276 | if (addr->sin6_family != AF_INET6) |
Marcus Meissner | c349a52 | 2011-07-04 01:30:29 +0000 | [diff] [blame] | 277 | return -EAFNOSUPPORT; |
Marcus Meissner | 5a079c3 | 2011-06-06 06:00:07 +0000 | [diff] [blame] | 278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
| 280 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) |
| 281 | return -EINVAL; |
| 282 | |
| 283 | snum = ntohs(addr->sin6_port); |
| 284 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
| 285 | return -EACCES; |
| 286 | |
| 287 | lock_sock(sk); |
| 288 | |
| 289 | /* Check these errors (active socket, double bind). */ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 290 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | err = -EINVAL; |
| 292 | goto out; |
| 293 | } |
| 294 | |
| 295 | /* Check if the address belongs to the host. */ |
| 296 | if (addr_type == IPV6_ADDR_MAPPED) { |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 297 | int chk_addr_ret; |
| 298 | |
Vlad Yasevich | 783ed5a | 2009-03-24 16:24:48 +0000 | [diff] [blame] | 299 | /* Binding to v4-mapped address on a v6-only socket |
| 300 | * makes no sense |
| 301 | */ |
| 302 | if (np->ipv6only) { |
| 303 | err = -EINVAL; |
| 304 | goto out; |
| 305 | } |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 306 | |
Uwe Kleine-König | a34f0b3 | 2010-12-10 14:55:42 +0100 | [diff] [blame] | 307 | /* Reproduce AF_INET checks to make the bindings consistent */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | v4addr = addr->sin6_addr.s6_addr32[3]; |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 309 | chk_addr_ret = inet_addr_type(net, v4addr); |
| 310 | if (!sysctl_ip_nonlocal_bind && |
| 311 | !(inet->freebind || inet->transparent) && |
| 312 | v4addr != htonl(INADDR_ANY) && |
| 313 | chk_addr_ret != RTN_LOCAL && |
| 314 | chk_addr_ret != RTN_MULTICAST && |
Bruno Prémont | ca6982b | 2009-08-23 19:06:28 -0700 | [diff] [blame] | 315 | chk_addr_ret != RTN_BROADCAST) { |
| 316 | err = -EADDRNOTAVAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | goto out; |
Bruno Prémont | ca6982b | 2009-08-23 19:06:28 -0700 | [diff] [blame] | 318 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } else { |
| 320 | if (addr_type != IPV6_ADDR_ANY) { |
| 321 | struct net_device *dev = NULL; |
| 322 | |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 323 | rcu_read_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | if (addr_type & IPV6_ADDR_LINKLOCAL) { |
| 325 | if (addr_len >= sizeof(struct sockaddr_in6) && |
| 326 | addr->sin6_scope_id) { |
| 327 | /* Override any existing binding, if another one |
| 328 | * is supplied by user. |
| 329 | */ |
| 330 | sk->sk_bound_dev_if = addr->sin6_scope_id; |
| 331 | } |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | /* Binding to link-local address requires an interface */ |
| 334 | if (!sk->sk_bound_dev_if) { |
| 335 | err = -EINVAL; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 336 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 338 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | if (!dev) { |
| 340 | err = -ENODEV; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 341 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | } |
| 343 | } |
| 344 | |
| 345 | /* ipv4 addr of the socket is invalid. Only the |
| 346 | * unspecified and mapped address have a v4 equivalent. |
| 347 | */ |
| 348 | v4addr = LOOPBACK4_IPV6; |
| 349 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { |
Balazs Scheidler | 0a513f6 | 2010-10-21 16:10:03 +0200 | [diff] [blame] | 350 | if (!inet->transparent && |
| 351 | !ipv6_chk_addr(net, &addr->sin6_addr, |
Daniel Lezcano | bfeade0 | 2008-01-10 22:43:18 -0800 | [diff] [blame] | 352 | dev, 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | err = -EADDRNOTAVAIL; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 354 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | } |
| 356 | } |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 357 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | } |
| 360 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 361 | inet->inet_rcv_saddr = v4addr; |
| 362 | inet->inet_saddr = v4addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
| 367 | ipv6_addr_copy(&np->saddr, &addr->sin6_addr); |
| 368 | |
| 369 | /* Make sure we are allowed to bind here. */ |
| 370 | if (sk->sk_prot->get_port(sk, snum)) { |
| 371 | inet_reset_saddr(sk); |
| 372 | err = -EADDRINUSE; |
| 373 | goto out; |
| 374 | } |
| 375 | |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 376 | if (addr_type != IPV6_ADDR_ANY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 378 | if (addr_type != IPV6_ADDR_MAPPED) |
| 379 | np->ipv6only = 1; |
| 380 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | if (snum) |
| 382 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 383 | inet->inet_sport = htons(inet->inet_num); |
| 384 | inet->inet_dport = 0; |
| 385 | inet->inet_daddr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | out: |
| 387 | release_sock(sk); |
| 388 | return err; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 389 | out_unlock: |
| 390 | rcu_read_unlock(); |
| 391 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 394 | EXPORT_SYMBOL(inet6_bind); |
| 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | int inet6_release(struct socket *sock) |
| 397 | { |
| 398 | struct sock *sk = sock->sk; |
| 399 | |
| 400 | if (sk == NULL) |
| 401 | return -EINVAL; |
| 402 | |
| 403 | /* Free mc lists */ |
| 404 | ipv6_sock_mc_close(sk); |
| 405 | |
| 406 | /* Free ac lists */ |
| 407 | ipv6_sock_ac_close(sk); |
| 408 | |
| 409 | return inet_release(sock); |
| 410 | } |
| 411 | |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 412 | EXPORT_SYMBOL(inet6_release); |
| 413 | |
Brian Haley | 7d06b2e | 2008-06-14 17:04:49 -0700 | [diff] [blame] | 414 | void inet6_destroy_sock(struct sock *sk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | { |
| 416 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 417 | struct sk_buff *skb; |
| 418 | struct ipv6_txoptions *opt; |
| 419 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | /* Release rx options */ |
| 421 | |
| 422 | if ((skb = xchg(&np->pktoptions, NULL)) != NULL) |
| 423 | kfree_skb(skb); |
| 424 | |
Brian Haley | 4b340ae | 2010-04-23 11:26:09 +0000 | [diff] [blame] | 425 | if ((skb = xchg(&np->rxpmtu, NULL)) != NULL) |
| 426 | kfree_skb(skb); |
| 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | /* Free flowlabels */ |
| 429 | fl6_free_socklist(sk); |
| 430 | |
| 431 | /* Free tx options */ |
| 432 | |
| 433 | if ((opt = xchg(&np->opt, NULL)) != NULL) |
| 434 | sock_kfree_s(sk, opt, opt->tot_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | } |
| 436 | |
Arnaldo Carvalho de Melo | 3cf3dc6 | 2005-12-13 23:23:20 -0800 | [diff] [blame] | 437 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
| 438 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | /* |
| 440 | * This does both peername and sockname. |
| 441 | */ |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
| 444 | int *uaddr_len, int peer) |
| 445 | { |
| 446 | struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; |
| 447 | struct sock *sk = sock->sk; |
| 448 | struct inet_sock *inet = inet_sk(sk); |
| 449 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 450 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | sin->sin6_family = AF_INET6; |
| 452 | sin->sin6_flowinfo = 0; |
| 453 | sin->sin6_scope_id = 0; |
| 454 | if (peer) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 455 | if (!inet->inet_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | return -ENOTCONN; |
| 457 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && |
| 458 | peer == 1) |
| 459 | return -ENOTCONN; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 460 | sin->sin6_port = inet->inet_dport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | ipv6_addr_copy(&sin->sin6_addr, &np->daddr); |
| 462 | if (np->sndflow) |
| 463 | sin->sin6_flowinfo = np->flow_label; |
| 464 | } else { |
| 465 | if (ipv6_addr_any(&np->rcv_saddr)) |
| 466 | ipv6_addr_copy(&sin->sin6_addr, &np->saddr); |
| 467 | else |
| 468 | ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); |
| 469 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 470 | sin->sin6_port = inet->inet_sport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | } |
| 472 | if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) |
| 473 | sin->sin6_scope_id = sk->sk_bound_dev_if; |
| 474 | *uaddr_len = sizeof(*sin); |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 475 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | } |
| 477 | |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 478 | EXPORT_SYMBOL(inet6_getname); |
| 479 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 481 | { |
| 482 | struct sock *sk = sock->sk; |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 483 | struct net *net = sock_net(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 485 | switch(cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | { |
| 487 | case SIOCGSTAMP: |
| 488 | return sock_get_timestamp(sk, (struct timeval __user *)arg); |
| 489 | |
Eric Dumazet | ae40eb1 | 2007-03-18 17:33:16 -0700 | [diff] [blame] | 490 | case SIOCGSTAMPNS: |
| 491 | return sock_get_timestampns(sk, (struct timespec __user *)arg); |
| 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | case SIOCADDRT: |
| 494 | case SIOCDELRT: |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 495 | |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 496 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | case SIOCSIFADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 499 | return addrconf_add_ifaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | case SIOCDIFADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 501 | return addrconf_del_ifaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | case SIOCSIFDSTADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 503 | return addrconf_set_dstaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | default: |
Christoph Hellwig | b5e5fa5 | 2006-01-03 14:18:33 -0800 | [diff] [blame] | 505 | if (!sk->sk_prot->ioctl) |
| 506 | return -ENOIOCTLCMD; |
| 507 | return sk->sk_prot->ioctl(sk, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
| 509 | /*NOTREACHED*/ |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 510 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | } |
| 512 | |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 513 | EXPORT_SYMBOL(inet6_ioctl); |
| 514 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 515 | const struct proto_ops inet6_stream_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 516 | .family = PF_INET6, |
| 517 | .owner = THIS_MODULE, |
| 518 | .release = inet6_release, |
| 519 | .bind = inet6_bind, |
| 520 | .connect = inet_stream_connect, /* ok */ |
| 521 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 522 | .accept = inet_accept, /* ok */ |
| 523 | .getname = inet6_getname, |
| 524 | .poll = tcp_poll, /* ok */ |
| 525 | .ioctl = inet6_ioctl, /* must change */ |
| 526 | .listen = inet_listen, /* ok */ |
| 527 | .shutdown = inet_shutdown, /* ok */ |
| 528 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 529 | .getsockopt = sock_common_getsockopt, /* ok */ |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 530 | .sendmsg = inet_sendmsg, /* ok */ |
| 531 | .recvmsg = inet_recvmsg, /* ok */ |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 532 | .mmap = sock_no_mmap, |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 533 | .sendpage = inet_sendpage, |
Jens Axboe | a0974dd | 2007-11-06 23:31:58 -0800 | [diff] [blame] | 534 | .splice_read = tcp_splice_read, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 535 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 536 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 537 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 538 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | }; |
| 540 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 541 | const struct proto_ops inet6_dgram_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 542 | .family = PF_INET6, |
| 543 | .owner = THIS_MODULE, |
| 544 | .release = inet6_release, |
| 545 | .bind = inet6_bind, |
| 546 | .connect = inet_dgram_connect, /* ok */ |
| 547 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 548 | .accept = sock_no_accept, /* a do nothing */ |
| 549 | .getname = inet6_getname, |
| 550 | .poll = udp_poll, /* ok */ |
| 551 | .ioctl = inet6_ioctl, /* must change */ |
| 552 | .listen = sock_no_listen, /* ok */ |
| 553 | .shutdown = inet_shutdown, /* ok */ |
| 554 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 555 | .getsockopt = sock_common_getsockopt, /* ok */ |
| 556 | .sendmsg = inet_sendmsg, /* ok */ |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 557 | .recvmsg = inet_recvmsg, /* ok */ |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 558 | .mmap = sock_no_mmap, |
| 559 | .sendpage = sock_no_sendpage, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 560 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 561 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 562 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 563 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | }; |
| 565 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 566 | static const struct net_proto_family inet6_family_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | .family = PF_INET6, |
| 568 | .create = inet6_create, |
| 569 | .owner = THIS_MODULE, |
| 570 | }; |
| 571 | |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 572 | int inet6_register_protosw(struct inet_protosw *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
| 574 | struct list_head *lh; |
| 575 | struct inet_protosw *answer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | struct list_head *last_perm; |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 577 | int protocol = p->protocol; |
| 578 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
| 580 | spin_lock_bh(&inetsw6_lock); |
| 581 | |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 582 | ret = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | if (p->type >= SOCK_MAX) |
| 584 | goto out_illegal; |
| 585 | |
| 586 | /* If we are trying to override a permanent protocol, bail. */ |
| 587 | answer = NULL; |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 588 | ret = -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | last_perm = &inetsw6[p->type]; |
| 590 | list_for_each(lh, &inetsw6[p->type]) { |
| 591 | answer = list_entry(lh, struct inet_protosw, list); |
| 592 | |
| 593 | /* Check only the non-wild match. */ |
| 594 | if (INET_PROTOSW_PERMANENT & answer->flags) { |
| 595 | if (protocol == answer->protocol) |
| 596 | break; |
| 597 | last_perm = lh; |
| 598 | } |
| 599 | |
| 600 | answer = NULL; |
| 601 | } |
| 602 | if (answer) |
| 603 | goto out_permanent; |
| 604 | |
| 605 | /* Add the new entry after the last permanent entry if any, so that |
| 606 | * the new entry does not override a permanent entry when matched with |
| 607 | * a wild-card protocol. But it is allowed to override any existing |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 608 | * non-permanent entry. This means that when we remove this entry, the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | * system automatically returns to the old behavior. |
| 610 | */ |
| 611 | list_add_rcu(&p->list, last_perm); |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 612 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | out: |
| 614 | spin_unlock_bh(&inetsw6_lock); |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 615 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
| 617 | out_permanent: |
| 618 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", |
| 619 | protocol); |
| 620 | goto out; |
| 621 | |
| 622 | out_illegal: |
| 623 | printk(KERN_ERR |
| 624 | "Ignoring attempt to register invalid socket type %d.\n", |
| 625 | p->type); |
| 626 | goto out; |
| 627 | } |
| 628 | |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 629 | EXPORT_SYMBOL(inet6_register_protosw); |
| 630 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | void |
| 632 | inet6_unregister_protosw(struct inet_protosw *p) |
| 633 | { |
| 634 | if (INET_PROTOSW_PERMANENT & p->flags) { |
| 635 | printk(KERN_ERR |
| 636 | "Attempt to unregister permanent protocol %d.\n", |
| 637 | p->protocol); |
| 638 | } else { |
| 639 | spin_lock_bh(&inetsw6_lock); |
| 640 | list_del_rcu(&p->list); |
| 641 | spin_unlock_bh(&inetsw6_lock); |
| 642 | |
| 643 | synchronize_net(); |
| 644 | } |
| 645 | } |
| 646 | |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 647 | EXPORT_SYMBOL(inet6_unregister_protosw); |
| 648 | |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 649 | int inet6_sk_rebuild_header(struct sock *sk) |
| 650 | { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 651 | struct ipv6_pinfo *np = inet6_sk(sk); |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 652 | struct dst_entry *dst; |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 653 | |
| 654 | dst = __sk_dst_check(sk, np->dst_cookie); |
| 655 | |
| 656 | if (dst == NULL) { |
| 657 | struct inet_sock *inet = inet_sk(sk); |
Arnaud Ebalard | 20c59de | 2010-06-01 21:35:01 +0000 | [diff] [blame] | 658 | struct in6_addr *final_p, final; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 659 | struct flowi6 fl6; |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 660 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 661 | memset(&fl6, 0, sizeof(fl6)); |
| 662 | fl6.flowi6_proto = sk->sk_protocol; |
| 663 | ipv6_addr_copy(&fl6.daddr, &np->daddr); |
| 664 | ipv6_addr_copy(&fl6.saddr, &np->saddr); |
| 665 | fl6.flowlabel = np->flow_label; |
| 666 | fl6.flowi6_oif = sk->sk_bound_dev_if; |
| 667 | fl6.flowi6_mark = sk->sk_mark; |
David S. Miller | 1958b85 | 2011-03-12 16:36:19 -0500 | [diff] [blame] | 668 | fl6.fl6_dport = inet->inet_dport; |
| 669 | fl6.fl6_sport = inet->inet_sport; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 670 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 671 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 672 | final_p = fl6_update_dst(&fl6, np->opt, &final); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 673 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 674 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 675 | if (IS_ERR(dst)) { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 676 | sk->sk_route_caps = 0; |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 677 | sk->sk_err_soft = -PTR_ERR(dst); |
| 678 | return PTR_ERR(dst); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 679 | } |
| 680 | |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 681 | __ip6_dst_store(sk, dst, NULL, NULL); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | return 0; |
| 685 | } |
| 686 | |
| 687 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
| 688 | |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 689 | int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) |
| 690 | { |
| 691 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 692 | struct inet6_skb_parm *opt = IP6CB(skb); |
| 693 | |
| 694 | if (np->rxopt.all) { |
| 695 | if ((opt->hop && (np->rxopt.bits.hopopts || |
| 696 | np->rxopt.bits.ohopopts)) || |
Arnaldo Carvalho de Melo | d56f90a | 2007-04-10 20:50:43 -0700 | [diff] [blame] | 697 | ((IPV6_FLOWINFO_MASK & |
| 698 | *(__be32 *)skb_network_header(skb)) && |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 699 | np->rxopt.bits.rxflow) || |
| 700 | (opt->srcrt && (np->rxopt.bits.srcrt || |
| 701 | np->rxopt.bits.osrcrt)) || |
| 702 | ((opt->dst1 || opt->dst0) && |
| 703 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) |
| 704 | return 1; |
| 705 | } |
| 706 | return 0; |
| 707 | } |
| 708 | |
| 709 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
| 710 | |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 711 | static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto) |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 712 | { |
Alexey Dobriyan | 41135cc | 2009-09-14 12:22:28 +0000 | [diff] [blame] | 713 | const struct inet6_protocol *ops = NULL; |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 714 | |
| 715 | for (;;) { |
| 716 | struct ipv6_opt_hdr *opth; |
| 717 | int len; |
| 718 | |
| 719 | if (proto != NEXTHDR_HOP) { |
| 720 | ops = rcu_dereference(inet6_protos[proto]); |
| 721 | |
| 722 | if (unlikely(!ops)) |
| 723 | break; |
| 724 | |
| 725 | if (!(ops->flags & INET6_PROTO_GSO_EXTHDR)) |
| 726 | break; |
| 727 | } |
| 728 | |
| 729 | if (unlikely(!pskb_may_pull(skb, 8))) |
| 730 | break; |
| 731 | |
| 732 | opth = (void *)skb->data; |
| 733 | len = ipv6_optlen(opth); |
| 734 | |
| 735 | if (unlikely(!pskb_may_pull(skb, len))) |
| 736 | break; |
| 737 | |
| 738 | proto = opth->nexthdr; |
| 739 | __skb_pull(skb, len); |
| 740 | } |
| 741 | |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 742 | return proto; |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | static int ipv6_gso_send_check(struct sk_buff *skb) |
| 746 | { |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 747 | const struct ipv6hdr *ipv6h; |
Alexey Dobriyan | 41135cc | 2009-09-14 12:22:28 +0000 | [diff] [blame] | 748 | const struct inet6_protocol *ops; |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 749 | int err = -EINVAL; |
| 750 | |
| 751 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) |
| 752 | goto out; |
| 753 | |
| 754 | ipv6h = ipv6_hdr(skb); |
| 755 | __skb_pull(skb, sizeof(*ipv6h)); |
| 756 | err = -EPROTONOSUPPORT; |
| 757 | |
| 758 | rcu_read_lock(); |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 759 | ops = rcu_dereference(inet6_protos[ |
| 760 | ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]); |
| 761 | |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 762 | if (likely(ops && ops->gso_send_check)) { |
| 763 | skb_reset_transport_header(skb); |
| 764 | err = ops->gso_send_check(skb); |
| 765 | } |
| 766 | rcu_read_unlock(); |
| 767 | |
| 768 | out: |
| 769 | return err; |
| 770 | } |
| 771 | |
Michał Mirosław | 04ed3e7 | 2011-01-24 15:32:47 -0800 | [diff] [blame] | 772 | static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, u32 features) |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 773 | { |
| 774 | struct sk_buff *segs = ERR_PTR(-EINVAL); |
| 775 | struct ipv6hdr *ipv6h; |
Alexey Dobriyan | 41135cc | 2009-09-14 12:22:28 +0000 | [diff] [blame] | 776 | const struct inet6_protocol *ops; |
Sridhar Samudrala | ba73542 | 2009-07-09 08:10:04 +0000 | [diff] [blame] | 777 | int proto; |
| 778 | struct frag_hdr *fptr; |
| 779 | unsigned int unfrag_ip6hlen; |
| 780 | u8 *prevhdr; |
| 781 | int offset = 0; |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 782 | |
| 783 | if (!(features & NETIF_F_V6_CSUM)) |
| 784 | features &= ~NETIF_F_SG; |
| 785 | |
| 786 | if (unlikely(skb_shinfo(skb)->gso_type & |
| 787 | ~(SKB_GSO_UDP | |
| 788 | SKB_GSO_DODGY | |
| 789 | SKB_GSO_TCP_ECN | |
| 790 | SKB_GSO_TCPV6 | |
| 791 | 0))) |
| 792 | goto out; |
| 793 | |
| 794 | if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) |
| 795 | goto out; |
| 796 | |
| 797 | ipv6h = ipv6_hdr(skb); |
| 798 | __skb_pull(skb, sizeof(*ipv6h)); |
| 799 | segs = ERR_PTR(-EPROTONOSUPPORT); |
| 800 | |
Sridhar Samudrala | ba73542 | 2009-07-09 08:10:04 +0000 | [diff] [blame] | 801 | proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr); |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 802 | rcu_read_lock(); |
Sridhar Samudrala | ba73542 | 2009-07-09 08:10:04 +0000 | [diff] [blame] | 803 | ops = rcu_dereference(inet6_protos[proto]); |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 804 | if (likely(ops && ops->gso_segment)) { |
| 805 | skb_reset_transport_header(skb); |
| 806 | segs = ops->gso_segment(skb, features); |
| 807 | } |
| 808 | rcu_read_unlock(); |
| 809 | |
Tobias Klauser | 376d940 | 2010-12-09 04:37:48 +0000 | [diff] [blame] | 810 | if (IS_ERR(segs)) |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 811 | goto out; |
| 812 | |
| 813 | for (skb = segs; skb; skb = skb->next) { |
| 814 | ipv6h = ipv6_hdr(skb); |
| 815 | ipv6h->payload_len = htons(skb->len - skb->mac_len - |
| 816 | sizeof(*ipv6h)); |
Sridhar Samudrala | ba73542 | 2009-07-09 08:10:04 +0000 | [diff] [blame] | 817 | if (proto == IPPROTO_UDP) { |
| 818 | unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr); |
| 819 | fptr = (struct frag_hdr *)(skb_network_header(skb) + |
| 820 | unfrag_ip6hlen); |
| 821 | fptr->frag_off = htons(offset); |
| 822 | if (skb->next != NULL) |
| 823 | fptr->frag_off |= htons(IP6_MF); |
| 824 | offset += (ntohs(ipv6h->payload_len) - |
| 825 | sizeof(struct frag_hdr)); |
| 826 | } |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 827 | } |
| 828 | |
| 829 | out: |
| 830 | return segs; |
| 831 | } |
| 832 | |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 833 | struct ipv6_gro_cb { |
| 834 | struct napi_gro_cb napi; |
| 835 | int proto; |
| 836 | }; |
| 837 | |
| 838 | #define IPV6_GRO_CB(skb) ((struct ipv6_gro_cb *)(skb)->cb) |
| 839 | |
| 840 | static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, |
| 841 | struct sk_buff *skb) |
| 842 | { |
Alexey Dobriyan | 41135cc | 2009-09-14 12:22:28 +0000 | [diff] [blame] | 843 | const struct inet6_protocol *ops; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 844 | struct sk_buff **pp = NULL; |
| 845 | struct sk_buff *p; |
| 846 | struct ipv6hdr *iph; |
| 847 | unsigned int nlen; |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 848 | unsigned int hlen; |
| 849 | unsigned int off; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 850 | int flush = 1; |
| 851 | int proto; |
Herbert Xu | ebad18e | 2009-01-17 19:46:16 +0000 | [diff] [blame] | 852 | __wsum csum; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 853 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 854 | off = skb_gro_offset(skb); |
| 855 | hlen = off + sizeof(*iph); |
| 856 | iph = skb_gro_header_fast(skb, off); |
| 857 | if (skb_gro_header_hard(skb, hlen)) { |
| 858 | iph = skb_gro_header_slow(skb, hlen, off); |
| 859 | if (unlikely(!iph)) |
| 860 | goto out; |
| 861 | } |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 862 | |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 863 | skb_gro_pull(skb, sizeof(*iph)); |
| 864 | skb_set_transport_header(skb, skb_gro_offset(skb)); |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 865 | |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 866 | flush += ntohs(iph->payload_len) != skb_gro_len(skb); |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 867 | |
| 868 | rcu_read_lock(); |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 869 | proto = iph->nexthdr; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 870 | ops = rcu_dereference(inet6_protos[proto]); |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 871 | if (!ops || !ops->gro_receive) { |
| 872 | __pskb_pull(skb, skb_gro_offset(skb)); |
| 873 | proto = ipv6_gso_pull_exthdrs(skb, proto); |
| 874 | skb_gro_pull(skb, -skb_transport_offset(skb)); |
| 875 | skb_reset_transport_header(skb); |
| 876 | __skb_push(skb, skb_gro_offset(skb)); |
| 877 | |
Yan, Zheng | cdaf557 | 2011-10-08 22:34:35 +0000 | [diff] [blame^] | 878 | ops = rcu_dereference(inet6_protos[proto]); |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 879 | if (!ops || !ops->gro_receive) |
| 880 | goto out_unlock; |
| 881 | |
| 882 | iph = ipv6_hdr(skb); |
| 883 | } |
| 884 | |
| 885 | IPV6_GRO_CB(skb)->proto = proto; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 886 | |
| 887 | flush--; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 888 | nlen = skb_network_header_len(skb); |
| 889 | |
| 890 | for (p = *head; p; p = p->next) { |
| 891 | struct ipv6hdr *iph2; |
| 892 | |
| 893 | if (!NAPI_GRO_CB(p)->same_flow) |
| 894 | continue; |
| 895 | |
| 896 | iph2 = ipv6_hdr(p); |
| 897 | |
| 898 | /* All fields must match except length. */ |
| 899 | if (nlen != skb_network_header_len(p) || |
| 900 | memcmp(iph, iph2, offsetof(struct ipv6hdr, payload_len)) || |
| 901 | memcmp(&iph->nexthdr, &iph2->nexthdr, |
| 902 | nlen - offsetof(struct ipv6hdr, nexthdr))) { |
| 903 | NAPI_GRO_CB(p)->same_flow = 0; |
| 904 | continue; |
| 905 | } |
| 906 | |
| 907 | NAPI_GRO_CB(p)->flush |= flush; |
| 908 | } |
| 909 | |
| 910 | NAPI_GRO_CB(skb)->flush |= flush; |
| 911 | |
Herbert Xu | ebad18e | 2009-01-17 19:46:16 +0000 | [diff] [blame] | 912 | csum = skb->csum; |
| 913 | skb_postpull_rcsum(skb, iph, skb_network_header_len(skb)); |
| 914 | |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 915 | pp = ops->gro_receive(head, skb); |
| 916 | |
Herbert Xu | ebad18e | 2009-01-17 19:46:16 +0000 | [diff] [blame] | 917 | skb->csum = csum; |
| 918 | |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 919 | out_unlock: |
| 920 | rcu_read_unlock(); |
| 921 | |
| 922 | out: |
| 923 | NAPI_GRO_CB(skb)->flush |= flush; |
| 924 | |
| 925 | return pp; |
| 926 | } |
| 927 | |
| 928 | static int ipv6_gro_complete(struct sk_buff *skb) |
| 929 | { |
Alexey Dobriyan | 41135cc | 2009-09-14 12:22:28 +0000 | [diff] [blame] | 930 | const struct inet6_protocol *ops; |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 931 | struct ipv6hdr *iph = ipv6_hdr(skb); |
| 932 | int err = -ENOSYS; |
| 933 | |
| 934 | iph->payload_len = htons(skb->len - skb_network_offset(skb) - |
| 935 | sizeof(*iph)); |
| 936 | |
| 937 | rcu_read_lock(); |
| 938 | ops = rcu_dereference(inet6_protos[IPV6_GRO_CB(skb)->proto]); |
| 939 | if (WARN_ON(!ops || !ops->gro_complete)) |
| 940 | goto out_unlock; |
| 941 | |
| 942 | err = ops->gro_complete(skb); |
| 943 | |
| 944 | out_unlock: |
| 945 | rcu_read_unlock(); |
| 946 | |
| 947 | return err; |
| 948 | } |
| 949 | |
Stephen Hemminger | 7546dd9 | 2009-03-09 08:18:29 +0000 | [diff] [blame] | 950 | static struct packet_type ipv6_packet_type __read_mostly = { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 951 | .type = cpu_to_be16(ETH_P_IPV6), |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 952 | .func = ipv6_rcv, |
| 953 | .gso_send_check = ipv6_gso_send_check, |
| 954 | .gso_segment = ipv6_gso_segment, |
Herbert Xu | 787e920 | 2009-01-08 10:40:57 -0800 | [diff] [blame] | 955 | .gro_receive = ipv6_gro_receive, |
| 956 | .gro_complete = ipv6_gro_complete, |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 957 | }; |
| 958 | |
| 959 | static int __init ipv6_packet_init(void) |
| 960 | { |
| 961 | dev_add_pack(&ipv6_packet_type); |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | static void ipv6_packet_cleanup(void) |
| 966 | { |
| 967 | dev_remove_pack(&ipv6_packet_type); |
| 968 | } |
| 969 | |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 970 | static int __net_init ipv6_init_mibs(struct net *net) |
| 971 | { |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 972 | if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 973 | sizeof(struct udp_mib), |
| 974 | __alignof__(struct udp_mib)) < 0) |
Denis V. Lunev | 0c7ed67 | 2008-10-07 14:49:36 -0700 | [diff] [blame] | 975 | return -ENOMEM; |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 976 | if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 977 | sizeof(struct udp_mib), |
| 978 | __alignof__(struct udp_mib)) < 0) |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 979 | goto err_udplite_mib; |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 980 | if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 981 | sizeof(struct ipstats_mib), |
| 982 | __alignof__(struct ipstats_mib)) < 0) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 983 | goto err_ip_mib; |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 984 | if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 985 | sizeof(struct icmpv6_mib), |
| 986 | __alignof__(struct icmpv6_mib)) < 0) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 987 | goto err_icmp_mib; |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 988 | if (snmp_mib_init((void __percpu **)net->mib.icmpv6msg_statistics, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 989 | sizeof(struct icmpv6msg_mib), |
| 990 | __alignof__(struct icmpv6msg_mib)) < 0) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 991 | goto err_icmpmsg_mib; |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 992 | return 0; |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 993 | |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 994 | err_icmpmsg_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 995 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 996 | err_icmp_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 997 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 998 | err_ip_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 999 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 1000 | err_udplite_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 1001 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 1002 | return -ENOMEM; |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 1003 | } |
| 1004 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 1005 | static void ipv6_cleanup_mibs(struct net *net) |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 1006 | { |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 1007 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
| 1008 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
| 1009 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
| 1010 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
| 1011 | snmp_mib_free((void __percpu **)net->mib.icmpv6msg_statistics); |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 1012 | } |
| 1013 | |
Alexey Dobriyan | e7dc849 | 2008-10-13 18:54:07 -0700 | [diff] [blame] | 1014 | static int __net_init inet6_net_init(struct net *net) |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1015 | { |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 1016 | int err = 0; |
| 1017 | |
Daniel Lezcano | 99bc9c4 | 2008-01-10 02:54:53 -0800 | [diff] [blame] | 1018 | net->ipv6.sysctl.bindv6only = 0; |
Daniel Lezcano | 41a7690 | 2008-01-10 03:02:40 -0800 | [diff] [blame] | 1019 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
Daniel Lezcano | e71e034 | 2008-01-10 02:56:03 -0800 | [diff] [blame] | 1020 | |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 1021 | err = ipv6_init_mibs(net); |
| 1022 | if (err) |
| 1023 | return err; |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 1024 | #ifdef CONFIG_PROC_FS |
| 1025 | err = udp6_proc_init(net); |
| 1026 | if (err) |
| 1027 | goto out; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 1028 | err = tcp6_proc_init(net); |
| 1029 | if (err) |
| 1030 | goto proc_tcp6_fail; |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 1031 | err = ac6_proc_init(net); |
| 1032 | if (err) |
| 1033 | goto proc_ac6_fail; |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 1034 | #endif |
| 1035 | return err; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 1036 | |
| 1037 | #ifdef CONFIG_PROC_FS |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 1038 | proc_ac6_fail: |
| 1039 | tcp6_proc_exit(net); |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 1040 | proc_tcp6_fail: |
| 1041 | udp6_proc_exit(net); |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 1042 | out: |
| 1043 | ipv6_cleanup_mibs(net); |
| 1044 | return err; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 1045 | #endif |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1046 | } |
| 1047 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 1048 | static void __net_exit inet6_net_exit(struct net *net) |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1049 | { |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 1050 | #ifdef CONFIG_PROC_FS |
| 1051 | udp6_proc_exit(net); |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 1052 | tcp6_proc_exit(net); |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 1053 | ac6_proc_exit(net); |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 1054 | #endif |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 1055 | ipv6_cleanup_mibs(net); |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | static struct pernet_operations inet6_net_ops = { |
| 1059 | .init = inet6_net_init, |
| 1060 | .exit = inet6_net_exit, |
| 1061 | }; |
| 1062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | static int __init inet6_init(void) |
| 1064 | { |
| 1065 | struct sk_buff *dummy_skb; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 1066 | struct list_head *r; |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 1067 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | |
YOSHIFUJI Hideaki | ef047f5 | 2006-09-01 00:29:06 -0700 | [diff] [blame] | 1069 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); |
| 1070 | |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 1071 | /* Register the socket-side information for inet6_create. */ |
| 1072 | for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
| 1073 | INIT_LIST_HEAD(r); |
| 1074 | |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 1075 | if (disable_ipv6_mod) { |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 1076 | printk(KERN_INFO |
| 1077 | "IPv6: Loaded, but administratively disabled, " |
| 1078 | "reboot required to enable\n"); |
| 1079 | goto out; |
| 1080 | } |
| 1081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | err = proto_register(&tcpv6_prot, 1); |
| 1083 | if (err) |
| 1084 | goto out; |
| 1085 | |
| 1086 | err = proto_register(&udpv6_prot, 1); |
| 1087 | if (err) |
| 1088 | goto out_unregister_tcp_proto; |
| 1089 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1090 | err = proto_register(&udplitev6_prot, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | if (err) |
| 1092 | goto out_unregister_udp_proto; |
| 1093 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1094 | err = proto_register(&rawv6_prot, 1); |
| 1095 | if (err) |
| 1096 | goto out_unregister_udplite_proto; |
| 1097 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | /* We MUST register RAW sockets before we create the ICMP6, |
| 1100 | * IGMP6, or NDISC control sockets. |
| 1101 | */ |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1102 | err = rawv6_init(); |
| 1103 | if (err) |
| 1104 | goto out_unregister_raw_proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | |
| 1106 | /* Register the family here so that the init calls below will |
| 1107 | * be able to create sockets. (?? is this dangerous ??) |
| 1108 | */ |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 1109 | err = sock_register(&inet6_family_ops); |
| 1110 | if (err) |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1111 | goto out_sock_register_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
Al Viro | eeb61f7 | 2008-07-27 08:59:33 +0100 | [diff] [blame] | 1113 | #ifdef CONFIG_SYSCTL |
| 1114 | err = ipv6_static_sysctl_register(); |
| 1115 | if (err) |
| 1116 | goto static_sysctl_fail; |
| 1117 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | /* |
| 1119 | * ipngwg API draft makes clear that the correct semantics |
| 1120 | * for TCP and UDP is to consider one TCP and UDP instance |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1121 | * in a host available by both INET and INET6 APIs and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | * able to communicate via both network protocols. |
| 1123 | */ |
| 1124 | |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1125 | err = register_pernet_subsys(&inet6_net_ops); |
| 1126 | if (err) |
| 1127 | goto register_pernet_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 1128 | err = icmpv6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | if (err) |
| 1130 | goto icmp_fail; |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 1131 | err = ip6_mr_init(); |
| 1132 | if (err) |
| 1133 | goto ipmr_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 1134 | err = ndisc_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | if (err) |
| 1136 | goto ndisc_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 1137 | err = igmp6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | if (err) |
| 1139 | goto igmp_fail; |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 1140 | err = ipv6_netfilter_init(); |
| 1141 | if (err) |
| 1142 | goto netfilter_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | /* Create /proc/foo6 entries. */ |
| 1144 | #ifdef CONFIG_PROC_FS |
| 1145 | err = -ENOMEM; |
| 1146 | if (raw6_proc_init()) |
| 1147 | goto proc_raw6_fail; |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1148 | if (udplite6_proc_init()) |
| 1149 | goto proc_udplite6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | if (ipv6_misc_proc_init()) |
| 1151 | goto proc_misc6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | if (if6_proc_init()) |
| 1153 | goto proc_if6_fail; |
| 1154 | #endif |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 1155 | err = ip6_route_init(); |
| 1156 | if (err) |
| 1157 | goto ip6_route_fail; |
Daniel Lezcano | 0a3e78a | 2007-12-11 02:23:18 -0800 | [diff] [blame] | 1158 | err = ip6_flowlabel_init(); |
| 1159 | if (err) |
| 1160 | goto ip6_flowlabel_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | err = addrconf_init(); |
| 1162 | if (err) |
| 1163 | goto addrconf_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | |
| 1165 | /* Init v6 extension headers. */ |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 1166 | err = ipv6_exthdrs_init(); |
| 1167 | if (err) |
| 1168 | goto ipv6_exthdrs_fail; |
| 1169 | |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 1170 | err = ipv6_frag_init(); |
| 1171 | if (err) |
| 1172 | goto ipv6_frag_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | |
| 1174 | /* Init v6 transport protocols. */ |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1175 | err = udpv6_init(); |
| 1176 | if (err) |
| 1177 | goto udpv6_fail; |
Herbert Xu | e2ed405 | 2005-07-05 14:41:20 -0700 | [diff] [blame] | 1178 | |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1179 | err = udplitev6_init(); |
| 1180 | if (err) |
| 1181 | goto udplitev6_fail; |
| 1182 | |
| 1183 | err = tcpv6_init(); |
| 1184 | if (err) |
| 1185 | goto tcpv6_fail; |
| 1186 | |
| 1187 | err = ipv6_packet_init(); |
| 1188 | if (err) |
| 1189 | goto ipv6_packet_fail; |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 1190 | |
| 1191 | #ifdef CONFIG_SYSCTL |
| 1192 | err = ipv6_sysctl_register(); |
| 1193 | if (err) |
| 1194 | goto sysctl_fail; |
| 1195 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | out: |
| 1197 | return err; |
| 1198 | |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 1199 | #ifdef CONFIG_SYSCTL |
| 1200 | sysctl_fail: |
| 1201 | ipv6_packet_cleanup(); |
| 1202 | #endif |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1203 | ipv6_packet_fail: |
| 1204 | tcpv6_exit(); |
| 1205 | tcpv6_fail: |
| 1206 | udplitev6_exit(); |
| 1207 | udplitev6_fail: |
| 1208 | udpv6_exit(); |
| 1209 | udpv6_fail: |
| 1210 | ipv6_frag_exit(); |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 1211 | ipv6_frag_fail: |
| 1212 | ipv6_exthdrs_exit(); |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 1213 | ipv6_exthdrs_fail: |
| 1214 | addrconf_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | addrconf_fail: |
| 1216 | ip6_flowlabel_cleanup(); |
Daniel Lezcano | 0a3e78a | 2007-12-11 02:23:18 -0800 | [diff] [blame] | 1217 | ip6_flowlabel_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | ip6_route_cleanup(); |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 1219 | ip6_route_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | #ifdef CONFIG_PROC_FS |
| 1221 | if6_proc_exit(); |
| 1222 | proc_if6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | ipv6_misc_proc_exit(); |
| 1224 | proc_misc6_fail: |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1225 | udplite6_proc_exit(); |
| 1226 | proc_udplite6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | raw6_proc_exit(); |
| 1228 | proc_raw6_fail: |
| 1229 | #endif |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 1230 | ipv6_netfilter_fini(); |
| 1231 | netfilter_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | igmp6_cleanup(); |
| 1233 | igmp_fail: |
| 1234 | ndisc_cleanup(); |
| 1235 | ndisc_fail: |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 1236 | ip6_mr_cleanup(); |
| 1237 | ipmr_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | icmpv6_cleanup(); |
| 1239 | icmp_fail: |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1240 | unregister_pernet_subsys(&inet6_net_ops); |
| 1241 | register_pernet_fail: |
Al Viro | eeb61f7 | 2008-07-27 08:59:33 +0100 | [diff] [blame] | 1242 | #ifdef CONFIG_SYSCTL |
| 1243 | ipv6_static_sysctl_unregister(); |
| 1244 | static_sysctl_fail: |
| 1245 | #endif |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 1246 | sock_unregister(PF_INET6); |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 1247 | rtnl_unregister_all(PF_INET6); |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1248 | out_sock_register_fail: |
| 1249 | rawv6_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | out_unregister_raw_proto: |
| 1251 | proto_unregister(&rawv6_prot); |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1252 | out_unregister_udplite_proto: |
| 1253 | proto_unregister(&udplitev6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | out_unregister_udp_proto: |
| 1255 | proto_unregister(&udpv6_prot); |
| 1256 | out_unregister_tcp_proto: |
| 1257 | proto_unregister(&tcpv6_prot); |
| 1258 | goto out; |
| 1259 | } |
| 1260 | module_init(inet6_init); |
| 1261 | |
| 1262 | static void __exit inet6_exit(void) |
| 1263 | { |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 1264 | if (disable_ipv6_mod) |
John Dykstra | ff8cf9a | 2009-03-11 09:22:51 -0700 | [diff] [blame] | 1265 | return; |
| 1266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | /* First of all disallow new sockets creation. */ |
| 1268 | sock_unregister(PF_INET6); |
Thomas Graf | c127ea2 | 2007-03-22 11:58:32 -0700 | [diff] [blame] | 1269 | /* Disallow any further netlink messages */ |
| 1270 | rtnl_unregister_all(PF_INET6); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1271 | |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 1272 | #ifdef CONFIG_SYSCTL |
| 1273 | ipv6_sysctl_unregister(); |
| 1274 | #endif |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1275 | udpv6_exit(); |
| 1276 | udplitev6_exit(); |
| 1277 | tcpv6_exit(); |
| 1278 | |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1279 | /* Cleanup code parts. */ |
| 1280 | ipv6_packet_cleanup(); |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 1281 | ipv6_frag_exit(); |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 1282 | ipv6_exthdrs_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | addrconf_cleanup(); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1284 | ip6_flowlabel_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | ip6_route_cleanup(); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1286 | #ifdef CONFIG_PROC_FS |
| 1287 | |
| 1288 | /* Cleanup code parts. */ |
| 1289 | if6_proc_exit(); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1290 | ipv6_misc_proc_exit(); |
| 1291 | udplite6_proc_exit(); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1292 | raw6_proc_exit(); |
| 1293 | #endif |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 1294 | ipv6_netfilter_fini(); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1295 | igmp6_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | ndisc_cleanup(); |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 1297 | ip6_mr_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | icmpv6_cleanup(); |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1299 | rawv6_exit(); |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 1300 | |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1301 | unregister_pernet_subsys(&inet6_net_ops); |
Al Viro | eeb61f7 | 2008-07-27 08:59:33 +0100 | [diff] [blame] | 1302 | #ifdef CONFIG_SYSCTL |
| 1303 | ipv6_static_sysctl_unregister(); |
| 1304 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | proto_unregister(&rawv6_prot); |
Joe Jin | ca17c23 | 2007-02-20 01:30:15 -0800 | [diff] [blame] | 1306 | proto_unregister(&udplitev6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | proto_unregister(&udpv6_prot); |
| 1308 | proto_unregister(&tcpv6_prot); |
Jesper Dangaard Brouer | 1f2ccd0 | 2009-06-26 10:46:03 +0000 | [diff] [blame] | 1309 | |
| 1310 | rcu_barrier(); /* Wait for completion of call_rcu()'s */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | } |
| 1312 | module_exit(inet6_exit); |
| 1313 | |
| 1314 | MODULE_ALIAS_NETPROTO(PF_INET6); |