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 | |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 21 | #define pr_fmt(fmt) "IPv6: " fmt |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | #include <linux/module.h> |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 24 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 40 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | #include <linux/inet.h> |
| 43 | #include <linux/netdevice.h> |
| 44 | #include <linux/icmpv6.h> |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 45 | #include <linux/netfilter_ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | #include <net/ip.h> |
| 48 | #include <net/ipv6.h> |
| 49 | #include <net/udp.h> |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 50 | #include <net/udplite.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #include <net/tcp.h> |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 52 | #include <net/ping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <net/protocol.h> |
| 54 | #include <net/inet_common.h> |
KOVACS Krisztian | 1668e01 | 2008-10-01 07:33:10 -0700 | [diff] [blame] | 55 | #include <net/route.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <net/transp_v6.h> |
| 57 | #include <net/ip6_route.h> |
| 58 | #include <net/addrconf.h> |
Cong Wang | f564f45 | 2013-08-31 13:44:36 +0800 | [diff] [blame] | 59 | #include <net/ndisc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #ifdef CONFIG_IPV6_TUNNEL |
| 61 | #include <net/ip6_tunnel.h> |
| 62 | #endif |
| 63 | |
| 64 | #include <asm/uaccess.h> |
YOSHIFUJI Hideaki | 7bc570c | 2008-04-03 09:22:53 +0900 | [diff] [blame] | 65 | #include <linux/mroute6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
| 67 | MODULE_AUTHOR("Cast of dozens"); |
| 68 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); |
| 69 | MODULE_LICENSE("GPL"); |
| 70 | |
Pavel Emelyanov | f126734 | 2007-11-23 21:28:44 +0800 | [diff] [blame] | 71 | /* The inetsw6 table contains everything that inet6_create needs to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | * build a new socket. |
| 73 | */ |
| 74 | static struct list_head inetsw6[SOCK_MAX]; |
| 75 | static DEFINE_SPINLOCK(inetsw6_lock); |
| 76 | |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 77 | struct ipv6_params ipv6_defaults = { |
| 78 | .disable_ipv6 = 0, |
| 79 | .autoconf = 1, |
| 80 | }; |
| 81 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 82 | static int disable_ipv6_mod; |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 83 | |
| 84 | module_param_named(disable, disable_ipv6_mod, int, 0444); |
| 85 | MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional"); |
| 86 | |
| 87 | module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444); |
| 88 | MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces"); |
| 89 | |
| 90 | module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444); |
| 91 | MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces"); |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 92 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
| 94 | { |
| 95 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); |
| 96 | |
| 97 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); |
| 98 | } |
| 99 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 100 | static int inet6_create(struct net *net, struct socket *sock, int protocol, |
| 101 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | { |
| 103 | struct inet_sock *inet; |
| 104 | struct ipv6_pinfo *np; |
| 105 | struct sock *sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | struct inet_protosw *answer; |
| 107 | struct proto *answer_prot; |
| 108 | unsigned char answer_flags; |
| 109 | char answer_no_check; |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 110 | int try_loading_module = 0; |
| 111 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | /* Look for the requested type/protocol pair. */ |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 114 | lookup_protocol: |
| 115 | err = -ESOCKTNOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | rcu_read_lock(); |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 117 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 119 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | /* Check the non-wild match. */ |
| 121 | if (protocol == answer->protocol) { |
| 122 | if (protocol != IPPROTO_IP) |
| 123 | break; |
| 124 | } else { |
| 125 | /* Check for the two wild cases. */ |
| 126 | if (IPPROTO_IP == protocol) { |
| 127 | protocol = answer->protocol; |
| 128 | break; |
| 129 | } |
| 130 | if (IPPROTO_IP == answer->protocol) |
| 131 | break; |
| 132 | } |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 133 | err = -EPROTONOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | } |
| 135 | |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 136 | if (err) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 137 | if (try_loading_module < 2) { |
| 138 | rcu_read_unlock(); |
| 139 | /* |
| 140 | * Be more specific, e.g. net-pf-10-proto-132-type-1 |
| 141 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) |
| 142 | */ |
| 143 | if (++try_loading_module == 1) |
| 144 | request_module("net-pf-%d-proto-%d-type-%d", |
| 145 | PF_INET6, protocol, sock->type); |
| 146 | /* |
| 147 | * Fall back to generic, e.g. net-pf-10-proto-132 |
| 148 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) |
| 149 | */ |
| 150 | else |
| 151 | request_module("net-pf-%d-proto-%d", |
| 152 | PF_INET6, protocol); |
| 153 | goto lookup_protocol; |
| 154 | } else |
| 155 | goto out_rcu_unlock; |
| 156 | } |
| 157 | |
| 158 | err = -EPERM; |
Eric W. Biederman | af31f41 | 2012-11-16 03:03:06 +0000 | [diff] [blame] | 159 | if (sock->type == SOCK_RAW && !kern && |
| 160 | !ns_capable(net->user_ns, CAP_NET_RAW)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | goto out_rcu_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
| 163 | sock->ops = answer->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | answer_prot = answer->prot; |
| 165 | answer_no_check = answer->no_check; |
| 166 | answer_flags = answer->flags; |
| 167 | rcu_read_unlock(); |
| 168 | |
Ilpo Järvinen | 547b792 | 2008-07-25 21:43:18 -0700 | [diff] [blame] | 169 | WARN_ON(answer_prot->slab == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 171 | err = -ENOBUFS; |
Pavel Emelyanov | 6257ff2 | 2007-11-01 00:39:31 -0700 | [diff] [blame] | 172 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | if (sk == NULL) |
| 174 | goto out; |
| 175 | |
| 176 | sock_init_data(sock, sk); |
| 177 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 178 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | sk->sk_no_check = answer_no_check; |
| 180 | if (INET_PROTOSW_REUSE & answer_flags) |
Pavel Emelyanov | 4a17fd5 | 2012-04-19 03:39:36 +0000 | [diff] [blame] | 181 | sk->sk_reuse = SK_CAN_REUSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | inet = inet_sk(sk); |
Paul Moore | 469de9b | 2007-01-09 14:37:06 -0800 | [diff] [blame] | 184 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
| 186 | if (SOCK_RAW == sock->type) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 187 | inet->inet_num = protocol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | if (IPPROTO_RAW == protocol) |
| 189 | inet->hdrincl = 1; |
| 190 | } |
| 191 | |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 192 | sk->sk_destruct = inet_sock_destruct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | sk->sk_family = PF_INET6; |
| 194 | sk->sk_protocol = protocol; |
| 195 | |
| 196 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; |
| 197 | |
| 198 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); |
| 199 | np->hop_limit = -1; |
David S. Miller | f935aa9 | 2010-05-03 23:42:27 -0700 | [diff] [blame] | 200 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | np->mc_loop = 1; |
| 202 | np->pmtudisc = IPV6_PMTUDISC_WANT; |
Pavel Emelyanov | 2e761e0 | 2008-06-09 15:53:30 -0700 | [diff] [blame] | 203 | np->ipv6only = net->ipv6.sysctl.bindv6only; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | /* Init the ipv4 part of the socket since we can have sockets |
| 206 | * using v6 API for ipv4. |
| 207 | */ |
| 208 | inet->uc_ttl = -1; |
| 209 | |
| 210 | inet->mc_loop = 1; |
| 211 | inet->mc_ttl = 1; |
| 212 | inet->mc_index = 0; |
| 213 | inet->mc_list = NULL; |
Jiri Benc | 4c507d2 | 2012-02-09 09:35:49 +0000 | [diff] [blame] | 214 | inet->rcv_tos = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
| 216 | if (ipv4_config.no_pmtu_disc) |
| 217 | inet->pmtudisc = IP_PMTUDISC_DONT; |
| 218 | else |
| 219 | inet->pmtudisc = IP_PMTUDISC_WANT; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 220 | /* |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 221 | * Increment only the relevant sk_prot->socks debug field, this changes |
| 222 | * the previous behaviour of incrementing both the equivalent to |
| 223 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. |
| 224 | * |
| 225 | * This allows better debug granularity as we'll know exactly how many |
| 226 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 |
| 227 | * transport protocol socks. -acme |
| 228 | */ |
| 229 | sk_refcnt_debug_inc(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 231 | if (inet->inet_num) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | /* It assumes that any protocol which allows |
| 233 | * the user to assign a number at socket |
| 234 | * creation time automatically shares. |
| 235 | */ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 236 | inet->inet_sport = htons(inet->inet_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | sk->sk_prot->hash(sk); |
| 238 | } |
| 239 | if (sk->sk_prot->init) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 240 | err = sk->sk_prot->init(sk); |
| 241 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | sk_common_release(sk); |
| 243 | goto out; |
| 244 | } |
| 245 | } |
| 246 | out: |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 247 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | out_rcu_unlock: |
| 249 | rcu_read_unlock(); |
| 250 | goto out; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | /* bind for INET6 API */ |
| 255 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) |
| 256 | { |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 257 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | struct sock *sk = sock->sk; |
| 259 | struct inet_sock *inet = inet_sk(sk); |
| 260 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 261 | struct net *net = sock_net(sk); |
Al Viro | fd68322 | 2006-09-26 22:17:51 -0700 | [diff] [blame] | 262 | __be32 v4addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | unsigned short snum; |
| 264 | int addr_type = 0; |
| 265 | int err = 0; |
| 266 | |
| 267 | /* If the socket has its own bind function then use it. */ |
| 268 | if (sk->sk_prot->bind) |
| 269 | return sk->sk_prot->bind(sk, uaddr, addr_len); |
| 270 | |
| 271 | if (addr_len < SIN6_LEN_RFC2133) |
| 272 | return -EINVAL; |
Marcus Meissner | 5a079c3 | 2011-06-06 06:00:07 +0000 | [diff] [blame] | 273 | |
| 274 | if (addr->sin6_family != AF_INET6) |
Marcus Meissner | c349a52 | 2011-07-04 01:30:29 +0000 | [diff] [blame] | 275 | return -EAFNOSUPPORT; |
Marcus Meissner | 5a079c3 | 2011-06-06 06:00:07 +0000 | [diff] [blame] | 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
| 278 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) |
| 279 | return -EINVAL; |
| 280 | |
| 281 | snum = ntohs(addr->sin6_port); |
Eric W. Biederman | 3594698 | 2012-11-16 03:03:12 +0000 | [diff] [blame] | 282 | if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | return -EACCES; |
| 284 | |
| 285 | lock_sock(sk); |
| 286 | |
| 287 | /* Check these errors (active socket, double bind). */ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 288 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | err = -EINVAL; |
| 290 | goto out; |
| 291 | } |
| 292 | |
| 293 | /* Check if the address belongs to the host. */ |
| 294 | if (addr_type == IPV6_ADDR_MAPPED) { |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 295 | int chk_addr_ret; |
| 296 | |
Vlad Yasevich | 783ed5a | 2009-03-24 16:24:48 +0000 | [diff] [blame] | 297 | /* Binding to v4-mapped address on a v6-only socket |
| 298 | * makes no sense |
| 299 | */ |
| 300 | if (np->ipv6only) { |
| 301 | err = -EINVAL; |
| 302 | goto out; |
| 303 | } |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 304 | |
Uwe Kleine-König | a34f0b3 | 2010-12-10 14:55:42 +0100 | [diff] [blame] | 305 | /* Reproduce AF_INET checks to make the bindings consistent */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | v4addr = addr->sin6_addr.s6_addr32[3]; |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 307 | chk_addr_ret = inet_addr_type(net, v4addr); |
| 308 | if (!sysctl_ip_nonlocal_bind && |
| 309 | !(inet->freebind || inet->transparent) && |
| 310 | v4addr != htonl(INADDR_ANY) && |
| 311 | chk_addr_ret != RTN_LOCAL && |
| 312 | chk_addr_ret != RTN_MULTICAST && |
Bruno Prémont | ca6982b | 2009-08-23 19:06:28 -0700 | [diff] [blame] | 313 | chk_addr_ret != RTN_BROADCAST) { |
| 314 | err = -EADDRNOTAVAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | goto out; |
Bruno Prémont | ca6982b | 2009-08-23 19:06:28 -0700 | [diff] [blame] | 316 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | } else { |
| 318 | if (addr_type != IPV6_ADDR_ANY) { |
| 319 | struct net_device *dev = NULL; |
| 320 | |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 321 | rcu_read_lock(); |
Hannes Frederic Sowa | 842df07 | 2013-03-08 02:07:19 +0000 | [diff] [blame] | 322 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | if (addr_len >= sizeof(struct sockaddr_in6) && |
| 324 | addr->sin6_scope_id) { |
| 325 | /* Override any existing binding, if another one |
| 326 | * is supplied by user. |
| 327 | */ |
| 328 | sk->sk_bound_dev_if = addr->sin6_scope_id; |
| 329 | } |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | /* Binding to link-local address requires an interface */ |
| 332 | if (!sk->sk_bound_dev_if) { |
| 333 | err = -EINVAL; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 334 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 336 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | if (!dev) { |
| 338 | err = -ENODEV; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 339 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | } |
| 342 | |
| 343 | /* ipv4 addr of the socket is invalid. Only the |
| 344 | * unspecified and mapped address have a v4 equivalent. |
| 345 | */ |
| 346 | v4addr = LOOPBACK4_IPV6; |
| 347 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { |
Maciej Żenczykowski | f74024d | 2011-11-07 14:57:21 +0000 | [diff] [blame] | 348 | if (!(inet->freebind || inet->transparent) && |
Balazs Scheidler | 0a513f6 | 2010-10-21 16:10:03 +0200 | [diff] [blame] | 349 | !ipv6_chk_addr(net, &addr->sin6_addr, |
Daniel Lezcano | bfeade0 | 2008-01-10 22:43:18 -0800 | [diff] [blame] | 350 | dev, 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | err = -EADDRNOTAVAIL; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 352 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | } |
| 354 | } |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 355 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | } |
| 357 | } |
| 358 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 359 | inet->inet_rcv_saddr = v4addr; |
| 360 | inet->inet_saddr = v4addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 362 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 365 | np->saddr = addr->sin6_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | /* Make sure we are allowed to bind here. */ |
| 368 | if (sk->sk_prot->get_port(sk, snum)) { |
| 369 | inet_reset_saddr(sk); |
| 370 | err = -EADDRINUSE; |
| 371 | goto out; |
| 372 | } |
| 373 | |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 374 | if (addr_type != IPV6_ADDR_ANY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 376 | if (addr_type != IPV6_ADDR_MAPPED) |
| 377 | np->ipv6only = 1; |
| 378 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | if (snum) |
| 380 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 381 | inet->inet_sport = htons(inet->inet_num); |
| 382 | inet->inet_dport = 0; |
| 383 | inet->inet_daddr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | out: |
| 385 | release_sock(sk); |
| 386 | return err; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 387 | out_unlock: |
| 388 | rcu_read_unlock(); |
| 389 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 391 | EXPORT_SYMBOL(inet6_bind); |
| 392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | int inet6_release(struct socket *sock) |
| 394 | { |
| 395 | struct sock *sk = sock->sk; |
| 396 | |
| 397 | if (sk == NULL) |
| 398 | return -EINVAL; |
| 399 | |
| 400 | /* Free mc lists */ |
| 401 | ipv6_sock_mc_close(sk); |
| 402 | |
| 403 | /* Free ac lists */ |
| 404 | ipv6_sock_ac_close(sk); |
| 405 | |
| 406 | return inet_release(sock); |
| 407 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 408 | EXPORT_SYMBOL(inet6_release); |
| 409 | |
Brian Haley | 7d06b2e | 2008-06-14 17:04:49 -0700 | [diff] [blame] | 410 | void inet6_destroy_sock(struct sock *sk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | { |
| 412 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 413 | struct sk_buff *skb; |
| 414 | struct ipv6_txoptions *opt; |
| 415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | /* Release rx options */ |
| 417 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 418 | skb = xchg(&np->pktoptions, NULL); |
| 419 | if (skb != NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | kfree_skb(skb); |
| 421 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 422 | skb = xchg(&np->rxpmtu, NULL); |
| 423 | if (skb != NULL) |
Brian Haley | 4b340ae | 2010-04-23 11:26:09 +0000 | [diff] [blame] | 424 | kfree_skb(skb); |
| 425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | /* Free flowlabels */ |
| 427 | fl6_free_socklist(sk); |
| 428 | |
| 429 | /* Free tx options */ |
| 430 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 431 | opt = xchg(&np->opt, NULL); |
| 432 | if (opt != NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | sock_kfree_s(sk, opt, opt->tot_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
Arnaldo Carvalho de Melo | 3cf3dc6 | 2005-12-13 23:23:20 -0800 | [diff] [blame] | 435 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
| 436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | /* |
| 438 | * This does both peername and sockname. |
| 439 | */ |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
| 442 | int *uaddr_len, int peer) |
| 443 | { |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 444 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | struct sock *sk = sock->sk; |
| 446 | struct inet_sock *inet = inet_sk(sk); |
| 447 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | sin->sin6_family = AF_INET6; |
| 450 | sin->sin6_flowinfo = 0; |
| 451 | sin->sin6_scope_id = 0; |
| 452 | if (peer) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 453 | if (!inet->inet_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | return -ENOTCONN; |
| 455 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && |
| 456 | peer == 1) |
| 457 | return -ENOTCONN; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 458 | sin->sin6_port = inet->inet_dport; |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 459 | sin->sin6_addr = sk->sk_v6_daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | if (np->sndflow) |
| 461 | sin->sin6_flowinfo = np->flow_label; |
| 462 | } else { |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 463 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 464 | sin->sin6_addr = np->saddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | else |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 466 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 468 | sin->sin6_port = inet->inet_sport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | } |
Hannes Frederic Sowa | 842df07 | 2013-03-08 02:07:19 +0000 | [diff] [blame] | 470 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
| 471 | sk->sk_bound_dev_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | *uaddr_len = sizeof(*sin); |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 473 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 475 | EXPORT_SYMBOL(inet6_getname); |
| 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 478 | { |
| 479 | struct sock *sk = sock->sk; |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 480 | struct net *net = sock_net(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 482 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | case SIOCGSTAMP: |
| 484 | return sock_get_timestamp(sk, (struct timeval __user *)arg); |
| 485 | |
Eric Dumazet | ae40eb1 | 2007-03-18 17:33:16 -0700 | [diff] [blame] | 486 | case SIOCGSTAMPNS: |
| 487 | return sock_get_timestampns(sk, (struct timespec __user *)arg); |
| 488 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | case SIOCADDRT: |
| 490 | case SIOCDELRT: |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 491 | |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 492 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | case SIOCSIFADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 495 | return addrconf_add_ifaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | case SIOCDIFADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 497 | return addrconf_del_ifaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | case SIOCSIFDSTADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 499 | return addrconf_set_dstaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | default: |
Christoph Hellwig | b5e5fa5 | 2006-01-03 14:18:33 -0800 | [diff] [blame] | 501 | if (!sk->sk_prot->ioctl) |
| 502 | return -ENOIOCTLCMD; |
| 503 | return sk->sk_prot->ioctl(sk, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | /*NOTREACHED*/ |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 506 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 508 | EXPORT_SYMBOL(inet6_ioctl); |
| 509 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 510 | const struct proto_ops inet6_stream_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 511 | .family = PF_INET6, |
| 512 | .owner = THIS_MODULE, |
| 513 | .release = inet6_release, |
| 514 | .bind = inet6_bind, |
| 515 | .connect = inet_stream_connect, /* ok */ |
| 516 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 517 | .accept = inet_accept, /* ok */ |
| 518 | .getname = inet6_getname, |
| 519 | .poll = tcp_poll, /* ok */ |
| 520 | .ioctl = inet6_ioctl, /* must change */ |
| 521 | .listen = inet_listen, /* ok */ |
| 522 | .shutdown = inet_shutdown, /* ok */ |
| 523 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 524 | .getsockopt = sock_common_getsockopt, /* ok */ |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 525 | .sendmsg = inet_sendmsg, /* ok */ |
| 526 | .recvmsg = inet_recvmsg, /* ok */ |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 527 | .mmap = sock_no_mmap, |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 528 | .sendpage = inet_sendpage, |
Jens Axboe | a0974dd | 2007-11-06 23:31:58 -0800 | [diff] [blame] | 529 | .splice_read = tcp_splice_read, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 530 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 531 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 532 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 533 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | }; |
| 535 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 536 | const struct proto_ops inet6_dgram_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 537 | .family = PF_INET6, |
| 538 | .owner = THIS_MODULE, |
| 539 | .release = inet6_release, |
| 540 | .bind = inet6_bind, |
| 541 | .connect = inet_dgram_connect, /* ok */ |
| 542 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 543 | .accept = sock_no_accept, /* a do nothing */ |
| 544 | .getname = inet6_getname, |
| 545 | .poll = udp_poll, /* ok */ |
| 546 | .ioctl = inet6_ioctl, /* must change */ |
| 547 | .listen = sock_no_listen, /* ok */ |
| 548 | .shutdown = inet_shutdown, /* ok */ |
| 549 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 550 | .getsockopt = sock_common_getsockopt, /* ok */ |
| 551 | .sendmsg = inet_sendmsg, /* ok */ |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 552 | .recvmsg = inet_recvmsg, /* ok */ |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 553 | .mmap = sock_no_mmap, |
| 554 | .sendpage = sock_no_sendpage, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 555 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 556 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 557 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 558 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | }; |
| 560 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 561 | static const struct net_proto_family inet6_family_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | .family = PF_INET6, |
| 563 | .create = inet6_create, |
| 564 | .owner = THIS_MODULE, |
| 565 | }; |
| 566 | |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 567 | int inet6_register_protosw(struct inet_protosw *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | { |
| 569 | struct list_head *lh; |
| 570 | struct inet_protosw *answer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | struct list_head *last_perm; |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 572 | int protocol = p->protocol; |
| 573 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
| 575 | spin_lock_bh(&inetsw6_lock); |
| 576 | |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 577 | ret = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | if (p->type >= SOCK_MAX) |
| 579 | goto out_illegal; |
| 580 | |
| 581 | /* If we are trying to override a permanent protocol, bail. */ |
| 582 | answer = NULL; |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 583 | ret = -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | last_perm = &inetsw6[p->type]; |
| 585 | list_for_each(lh, &inetsw6[p->type]) { |
| 586 | answer = list_entry(lh, struct inet_protosw, list); |
| 587 | |
| 588 | /* Check only the non-wild match. */ |
| 589 | if (INET_PROTOSW_PERMANENT & answer->flags) { |
| 590 | if (protocol == answer->protocol) |
| 591 | break; |
| 592 | last_perm = lh; |
| 593 | } |
| 594 | |
| 595 | answer = NULL; |
| 596 | } |
| 597 | if (answer) |
| 598 | goto out_permanent; |
| 599 | |
| 600 | /* Add the new entry after the last permanent entry if any, so that |
| 601 | * the new entry does not override a permanent entry when matched with |
| 602 | * a wild-card protocol. But it is allowed to override any existing |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 603 | * non-permanent entry. This means that when we remove this entry, the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | * system automatically returns to the old behavior. |
| 605 | */ |
| 606 | list_add_rcu(&p->list, last_perm); |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 607 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | out: |
| 609 | spin_unlock_bh(&inetsw6_lock); |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 610 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
| 612 | out_permanent: |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 613 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | goto out; |
| 615 | |
| 616 | out_illegal: |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 617 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | p->type); |
| 619 | goto out; |
| 620 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 621 | EXPORT_SYMBOL(inet6_register_protosw); |
| 622 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | void |
| 624 | inet6_unregister_protosw(struct inet_protosw *p) |
| 625 | { |
| 626 | if (INET_PROTOSW_PERMANENT & p->flags) { |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 627 | pr_err("Attempt to unregister permanent protocol %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | p->protocol); |
| 629 | } else { |
| 630 | spin_lock_bh(&inetsw6_lock); |
| 631 | list_del_rcu(&p->list); |
| 632 | spin_unlock_bh(&inetsw6_lock); |
| 633 | |
| 634 | synchronize_net(); |
| 635 | } |
| 636 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 637 | EXPORT_SYMBOL(inet6_unregister_protosw); |
| 638 | |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 639 | int inet6_sk_rebuild_header(struct sock *sk) |
| 640 | { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 641 | struct ipv6_pinfo *np = inet6_sk(sk); |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 642 | struct dst_entry *dst; |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 643 | |
| 644 | dst = __sk_dst_check(sk, np->dst_cookie); |
| 645 | |
| 646 | if (dst == NULL) { |
| 647 | struct inet_sock *inet = inet_sk(sk); |
Arnaud Ebalard | 20c59de | 2010-06-01 21:35:01 +0000 | [diff] [blame] | 648 | struct in6_addr *final_p, final; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 649 | struct flowi6 fl6; |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 650 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 651 | memset(&fl6, 0, sizeof(fl6)); |
| 652 | fl6.flowi6_proto = sk->sk_protocol; |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 653 | fl6.daddr = sk->sk_v6_daddr; |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 654 | fl6.saddr = np->saddr; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 655 | fl6.flowlabel = np->flow_label; |
| 656 | fl6.flowi6_oif = sk->sk_bound_dev_if; |
| 657 | fl6.flowi6_mark = sk->sk_mark; |
David S. Miller | 1958b85 | 2011-03-12 16:36:19 -0500 | [diff] [blame] | 658 | fl6.fl6_dport = inet->inet_dport; |
| 659 | fl6.fl6_sport = inet->inet_sport; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 660 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 661 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 662 | final_p = fl6_update_dst(&fl6, np->opt, &final); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 663 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 664 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 665 | if (IS_ERR(dst)) { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 666 | sk->sk_route_caps = 0; |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 667 | sk->sk_err_soft = -PTR_ERR(dst); |
| 668 | return PTR_ERR(dst); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 669 | } |
| 670 | |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 671 | __ip6_dst_store(sk, dst, NULL, NULL); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | return 0; |
| 675 | } |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 676 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
| 677 | |
Eric Dumazet | 92113bf | 2012-05-18 08:14:11 +0200 | [diff] [blame] | 678 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb) |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 679 | { |
Eric Dumazet | 92113bf | 2012-05-18 08:14:11 +0200 | [diff] [blame] | 680 | const struct ipv6_pinfo *np = inet6_sk(sk); |
| 681 | const struct inet6_skb_parm *opt = IP6CB(skb); |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 682 | |
| 683 | if (np->rxopt.all) { |
| 684 | if ((opt->hop && (np->rxopt.bits.hopopts || |
| 685 | np->rxopt.bits.ohopopts)) || |
Arnaldo Carvalho de Melo | d56f90a | 2007-04-10 20:50:43 -0700 | [diff] [blame] | 686 | ((IPV6_FLOWINFO_MASK & |
| 687 | *(__be32 *)skb_network_header(skb)) && |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 688 | np->rxopt.bits.rxflow) || |
| 689 | (opt->srcrt && (np->rxopt.bits.srcrt || |
| 690 | np->rxopt.bits.osrcrt)) || |
| 691 | ((opt->dst1 || opt->dst0) && |
| 692 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) |
Eric Dumazet | 92113bf | 2012-05-18 08:14:11 +0200 | [diff] [blame] | 693 | return true; |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 694 | } |
Eric Dumazet | 92113bf | 2012-05-18 08:14:11 +0200 | [diff] [blame] | 695 | return false; |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 696 | } |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 697 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
| 698 | |
Stephen Hemminger | 7546dd9 | 2009-03-09 08:18:29 +0000 | [diff] [blame] | 699 | static struct packet_type ipv6_packet_type __read_mostly = { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 700 | .type = cpu_to_be16(ETH_P_IPV6), |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 701 | .func = ipv6_rcv, |
Vlad Yasevich | 22061d8 | 2012-11-15 08:49:11 +0000 | [diff] [blame] | 702 | }; |
| 703 | |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 704 | static int __init ipv6_packet_init(void) |
| 705 | { |
| 706 | dev_add_pack(&ipv6_packet_type); |
| 707 | return 0; |
| 708 | } |
| 709 | |
| 710 | static void ipv6_packet_cleanup(void) |
| 711 | { |
| 712 | dev_remove_pack(&ipv6_packet_type); |
| 713 | } |
| 714 | |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 715 | static int __net_init ipv6_init_mibs(struct net *net) |
| 716 | { |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 717 | int i; |
| 718 | |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 719 | if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 720 | sizeof(struct udp_mib), |
| 721 | __alignof__(struct udp_mib)) < 0) |
Denis V. Lunev | 0c7ed67 | 2008-10-07 14:49:36 -0700 | [diff] [blame] | 722 | return -ENOMEM; |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 723 | if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 724 | sizeof(struct udp_mib), |
| 725 | __alignof__(struct udp_mib)) < 0) |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 726 | goto err_udplite_mib; |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 727 | if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 728 | sizeof(struct ipstats_mib), |
| 729 | __alignof__(struct ipstats_mib)) < 0) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 730 | goto err_ip_mib; |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 731 | |
| 732 | for_each_possible_cpu(i) { |
| 733 | struct ipstats_mib *af_inet6_stats; |
| 734 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics[0], i); |
| 735 | u64_stats_init(&af_inet6_stats->syncp); |
| 736 | #if SNMP_ARRAY_SZ == 2 |
| 737 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics[1], i); |
| 738 | u64_stats_init(&af_inet6_stats->syncp); |
| 739 | #endif |
| 740 | } |
| 741 | |
| 742 | |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 743 | if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics, |
Eric Dumazet | 1823e4c8 | 2010-06-22 20:58:41 +0000 | [diff] [blame] | 744 | sizeof(struct icmpv6_mib), |
| 745 | __alignof__(struct icmpv6_mib)) < 0) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 746 | goto err_icmp_mib; |
Eric Dumazet | 2a24444 | 2011-11-13 01:24:04 +0000 | [diff] [blame] | 747 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
| 748 | GFP_KERNEL); |
| 749 | if (!net->mib.icmpv6msg_statistics) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 750 | goto err_icmpmsg_mib; |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 751 | return 0; |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 752 | |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 753 | err_icmpmsg_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 754 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 755 | err_icmp_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 756 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 757 | err_ip_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 758 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 759 | err_udplite_mib: |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 760 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 761 | return -ENOMEM; |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 762 | } |
| 763 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 764 | static void ipv6_cleanup_mibs(struct net *net) |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 765 | { |
Tejun Heo | 7d720c3 | 2010-02-16 15:20:26 +0000 | [diff] [blame] | 766 | snmp_mib_free((void __percpu **)net->mib.udp_stats_in6); |
| 767 | snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6); |
| 768 | snmp_mib_free((void __percpu **)net->mib.ipv6_statistics); |
| 769 | snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics); |
Eric Dumazet | 2a24444 | 2011-11-13 01:24:04 +0000 | [diff] [blame] | 770 | kfree(net->mib.icmpv6msg_statistics); |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 771 | } |
| 772 | |
Alexey Dobriyan | e7dc849 | 2008-10-13 18:54:07 -0700 | [diff] [blame] | 773 | static int __net_init inet6_net_init(struct net *net) |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 774 | { |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 775 | int err = 0; |
| 776 | |
Daniel Lezcano | 99bc9c4 | 2008-01-10 02:54:53 -0800 | [diff] [blame] | 777 | net->ipv6.sysctl.bindv6only = 0; |
Daniel Lezcano | 41a7690 | 2008-01-10 03:02:40 -0800 | [diff] [blame] | 778 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
fan.du | ca4c3fc | 2013-07-30 08:33:53 +0800 | [diff] [blame] | 779 | atomic_set(&net->ipv6.rt_genid, 0); |
Daniel Lezcano | e71e034 | 2008-01-10 02:56:03 -0800 | [diff] [blame] | 780 | |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 781 | err = ipv6_init_mibs(net); |
| 782 | if (err) |
| 783 | return err; |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 784 | #ifdef CONFIG_PROC_FS |
| 785 | err = udp6_proc_init(net); |
| 786 | if (err) |
| 787 | goto out; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 788 | err = tcp6_proc_init(net); |
| 789 | if (err) |
| 790 | goto proc_tcp6_fail; |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 791 | err = ac6_proc_init(net); |
| 792 | if (err) |
| 793 | goto proc_ac6_fail; |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 794 | #endif |
| 795 | return err; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 796 | |
| 797 | #ifdef CONFIG_PROC_FS |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 798 | proc_ac6_fail: |
| 799 | tcp6_proc_exit(net); |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 800 | proc_tcp6_fail: |
| 801 | udp6_proc_exit(net); |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 802 | out: |
| 803 | ipv6_cleanup_mibs(net); |
| 804 | return err; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 805 | #endif |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 806 | } |
| 807 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 808 | static void __net_exit inet6_net_exit(struct net *net) |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 809 | { |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 810 | #ifdef CONFIG_PROC_FS |
| 811 | udp6_proc_exit(net); |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 812 | tcp6_proc_exit(net); |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 813 | ac6_proc_exit(net); |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 814 | #endif |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 815 | ipv6_cleanup_mibs(net); |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 816 | } |
| 817 | |
| 818 | static struct pernet_operations inet6_net_ops = { |
| 819 | .init = inet6_net_init, |
| 820 | .exit = inet6_net_exit, |
| 821 | }; |
| 822 | |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 823 | static const struct ipv6_stub ipv6_stub_impl = { |
| 824 | .ipv6_sock_mc_join = ipv6_sock_mc_join, |
| 825 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, |
| 826 | .ipv6_dst_lookup = ip6_dst_lookup, |
| 827 | .udpv6_encap_enable = udpv6_encap_enable, |
Cong Wang | f564f45 | 2013-08-31 13:44:36 +0800 | [diff] [blame] | 828 | .ndisc_send_na = ndisc_send_na, |
Cong Wang | e15a00a | 2013-08-31 13:44:34 +0800 | [diff] [blame] | 829 | .nd_tbl = &nd_tbl, |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 830 | }; |
| 831 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | static int __init inet6_init(void) |
| 833 | { |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 834 | struct list_head *r; |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 835 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | |
YOSHIFUJI Hideaki / 吉藤英明 | ba96bcb | 2013-01-09 07:19:43 +0000 | [diff] [blame] | 837 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb)); |
YOSHIFUJI Hideaki | ef047f5 | 2006-09-01 00:29:06 -0700 | [diff] [blame] | 838 | |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 839 | /* Register the socket-side information for inet6_create. */ |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 840 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 841 | INIT_LIST_HEAD(r); |
| 842 | |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 843 | if (disable_ipv6_mod) { |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 844 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 845 | goto out; |
| 846 | } |
| 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | err = proto_register(&tcpv6_prot, 1); |
| 849 | if (err) |
| 850 | goto out; |
| 851 | |
| 852 | err = proto_register(&udpv6_prot, 1); |
| 853 | if (err) |
| 854 | goto out_unregister_tcp_proto; |
| 855 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 856 | err = proto_register(&udplitev6_prot, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | if (err) |
| 858 | goto out_unregister_udp_proto; |
| 859 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 860 | err = proto_register(&rawv6_prot, 1); |
| 861 | if (err) |
| 862 | goto out_unregister_udplite_proto; |
| 863 | |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 864 | err = proto_register(&pingv6_prot, 1); |
| 865 | if (err) |
| 866 | goto out_unregister_ping_proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | /* We MUST register RAW sockets before we create the ICMP6, |
| 869 | * IGMP6, or NDISC control sockets. |
| 870 | */ |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 871 | err = rawv6_init(); |
| 872 | if (err) |
| 873 | goto out_unregister_raw_proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
| 875 | /* Register the family here so that the init calls below will |
| 876 | * be able to create sockets. (?? is this dangerous ??) |
| 877 | */ |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 878 | err = sock_register(&inet6_family_ops); |
| 879 | if (err) |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 880 | goto out_sock_register_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | /* |
| 883 | * ipngwg API draft makes clear that the correct semantics |
| 884 | * 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] | 885 | * in a host available by both INET and INET6 APIs and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | * able to communicate via both network protocols. |
| 887 | */ |
| 888 | |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 889 | err = register_pernet_subsys(&inet6_net_ops); |
| 890 | if (err) |
| 891 | goto register_pernet_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 892 | err = icmpv6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | if (err) |
| 894 | goto icmp_fail; |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 895 | err = ip6_mr_init(); |
| 896 | if (err) |
| 897 | goto ipmr_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 898 | err = ndisc_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | if (err) |
| 900 | goto ndisc_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 901 | err = igmp6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | if (err) |
| 903 | goto igmp_fail; |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 904 | |
| 905 | ipv6_stub = &ipv6_stub_impl; |
| 906 | |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 907 | err = ipv6_netfilter_init(); |
| 908 | if (err) |
| 909 | goto netfilter_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | /* Create /proc/foo6 entries. */ |
| 911 | #ifdef CONFIG_PROC_FS |
| 912 | err = -ENOMEM; |
| 913 | if (raw6_proc_init()) |
| 914 | goto proc_raw6_fail; |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 915 | if (udplite6_proc_init()) |
| 916 | goto proc_udplite6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | if (ipv6_misc_proc_init()) |
| 918 | goto proc_misc6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | if (if6_proc_init()) |
| 920 | goto proc_if6_fail; |
| 921 | #endif |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 922 | err = ip6_route_init(); |
| 923 | if (err) |
| 924 | goto ip6_route_fail; |
Michal Kubeček | 2c861cc | 2013-09-09 21:45:04 +0200 | [diff] [blame] | 925 | err = ndisc_late_init(); |
| 926 | if (err) |
| 927 | goto ndisc_late_fail; |
Daniel Lezcano | 0a3e78a | 2007-12-11 02:23:18 -0800 | [diff] [blame] | 928 | err = ip6_flowlabel_init(); |
| 929 | if (err) |
| 930 | goto ip6_flowlabel_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | err = addrconf_init(); |
| 932 | if (err) |
| 933 | goto addrconf_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | |
| 935 | /* Init v6 extension headers. */ |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 936 | err = ipv6_exthdrs_init(); |
| 937 | if (err) |
| 938 | goto ipv6_exthdrs_fail; |
| 939 | |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 940 | err = ipv6_frag_init(); |
| 941 | if (err) |
| 942 | goto ipv6_frag_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | |
| 944 | /* Init v6 transport protocols. */ |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 945 | err = udpv6_init(); |
| 946 | if (err) |
| 947 | goto udpv6_fail; |
Herbert Xu | e2ed405 | 2005-07-05 14:41:20 -0700 | [diff] [blame] | 948 | |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 949 | err = udplitev6_init(); |
| 950 | if (err) |
| 951 | goto udplitev6_fail; |
| 952 | |
| 953 | err = tcpv6_init(); |
| 954 | if (err) |
| 955 | goto tcpv6_fail; |
| 956 | |
| 957 | err = ipv6_packet_init(); |
| 958 | if (err) |
| 959 | goto ipv6_packet_fail; |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 960 | |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 961 | err = pingv6_init(); |
| 962 | if (err) |
| 963 | goto pingv6_fail; |
| 964 | |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 965 | #ifdef CONFIG_SYSCTL |
| 966 | err = ipv6_sysctl_register(); |
| 967 | if (err) |
| 968 | goto sysctl_fail; |
| 969 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | out: |
| 971 | return err; |
| 972 | |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 973 | #ifdef CONFIG_SYSCTL |
| 974 | sysctl_fail: |
Vlad Yasevich | eca42aa | 2013-11-16 15:17:24 -0500 | [diff] [blame] | 975 | pingv6_exit(); |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 976 | #endif |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 977 | pingv6_fail: |
Vlad Yasevich | eca42aa | 2013-11-16 15:17:24 -0500 | [diff] [blame] | 978 | ipv6_packet_cleanup(); |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 979 | ipv6_packet_fail: |
| 980 | tcpv6_exit(); |
| 981 | tcpv6_fail: |
| 982 | udplitev6_exit(); |
| 983 | udplitev6_fail: |
| 984 | udpv6_exit(); |
| 985 | udpv6_fail: |
| 986 | ipv6_frag_exit(); |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 987 | ipv6_frag_fail: |
| 988 | ipv6_exthdrs_exit(); |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 989 | ipv6_exthdrs_fail: |
| 990 | addrconf_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | addrconf_fail: |
| 992 | ip6_flowlabel_cleanup(); |
Daniel Lezcano | 0a3e78a | 2007-12-11 02:23:18 -0800 | [diff] [blame] | 993 | ip6_flowlabel_fail: |
Michal Kubeček | 2c861cc | 2013-09-09 21:45:04 +0200 | [diff] [blame] | 994 | ndisc_late_cleanup(); |
| 995 | ndisc_late_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | ip6_route_cleanup(); |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 997 | ip6_route_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | #ifdef CONFIG_PROC_FS |
| 999 | if6_proc_exit(); |
| 1000 | proc_if6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | ipv6_misc_proc_exit(); |
| 1002 | proc_misc6_fail: |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1003 | udplite6_proc_exit(); |
| 1004 | proc_udplite6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | raw6_proc_exit(); |
| 1006 | proc_raw6_fail: |
| 1007 | #endif |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 1008 | ipv6_netfilter_fini(); |
| 1009 | netfilter_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | igmp6_cleanup(); |
| 1011 | igmp_fail: |
| 1012 | ndisc_cleanup(); |
| 1013 | ndisc_fail: |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 1014 | ip6_mr_cleanup(); |
| 1015 | ipmr_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | icmpv6_cleanup(); |
| 1017 | icmp_fail: |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1018 | unregister_pernet_subsys(&inet6_net_ops); |
| 1019 | register_pernet_fail: |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 1020 | sock_unregister(PF_INET6); |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 1021 | rtnl_unregister_all(PF_INET6); |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1022 | out_sock_register_fail: |
| 1023 | rawv6_exit(); |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 1024 | out_unregister_ping_proto: |
| 1025 | proto_unregister(&pingv6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | out_unregister_raw_proto: |
| 1027 | proto_unregister(&rawv6_prot); |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1028 | out_unregister_udplite_proto: |
| 1029 | proto_unregister(&udplitev6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | out_unregister_udp_proto: |
| 1031 | proto_unregister(&udpv6_prot); |
| 1032 | out_unregister_tcp_proto: |
| 1033 | proto_unregister(&tcpv6_prot); |
| 1034 | goto out; |
| 1035 | } |
| 1036 | module_init(inet6_init); |
| 1037 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | MODULE_ALIAS_NETPROTO(PF_INET6); |