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 | * |
Ian Morris | 67ba415 | 2014-08-24 21:53:10 +0100 | [diff] [blame] | 10 | * Fixes: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * piggy, Karl Knutson : Socket protocol table |
Ian Morris | 67ba415 | 2014-08-24 21:53:10 +0100 | [diff] [blame] | 12 | * Hideaki YOSHIFUJI : sin6_scope_id support |
| 13 | * Arnaldo Melo : check proc_net_create return, cleanups |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
Ian Morris | 67ba415 | 2014-08-24 21:53:10 +0100 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
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 | |
| 112 | /* Look for the requested type/protocol pair. */ |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 113 | lookup_protocol: |
| 114 | err = -ESOCKTNOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | rcu_read_lock(); |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 116 | list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 118 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | /* Check the non-wild match. */ |
| 120 | if (protocol == answer->protocol) { |
| 121 | if (protocol != IPPROTO_IP) |
| 122 | break; |
| 123 | } else { |
| 124 | /* Check for the two wild cases. */ |
| 125 | if (IPPROTO_IP == protocol) { |
| 126 | protocol = answer->protocol; |
| 127 | break; |
| 128 | } |
| 129 | if (IPPROTO_IP == answer->protocol) |
| 130 | break; |
| 131 | } |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 132 | err = -EPROTONOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
| 134 | |
Paul E. McKenney | 696adfe | 2008-07-25 01:45:34 -0700 | [diff] [blame] | 135 | if (err) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 136 | if (try_loading_module < 2) { |
| 137 | rcu_read_unlock(); |
| 138 | /* |
| 139 | * Be more specific, e.g. net-pf-10-proto-132-type-1 |
| 140 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) |
| 141 | */ |
| 142 | if (++try_loading_module == 1) |
| 143 | request_module("net-pf-%d-proto-%d-type-%d", |
| 144 | PF_INET6, protocol, sock->type); |
| 145 | /* |
| 146 | * Fall back to generic, e.g. net-pf-10-proto-132 |
| 147 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) |
| 148 | */ |
| 149 | else |
| 150 | request_module("net-pf-%d-proto-%d", |
| 151 | PF_INET6, protocol); |
| 152 | goto lookup_protocol; |
| 153 | } else |
| 154 | goto out_rcu_unlock; |
| 155 | } |
| 156 | |
| 157 | err = -EPERM; |
Eric W. Biederman | af31f41 | 2012-11-16 03:03:06 +0000 | [diff] [blame] | 158 | if (sock->type == SOCK_RAW && !kern && |
| 159 | !ns_capable(net->user_ns, CAP_NET_RAW)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | goto out_rcu_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
| 162 | sock->ops = answer->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | answer_prot = answer->prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | answer_flags = answer->flags; |
| 165 | rcu_read_unlock(); |
| 166 | |
Ian Morris | 63159f2 | 2015-03-29 14:00:04 +0100 | [diff] [blame] | 167 | WARN_ON(!answer_prot->slab); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 169 | err = -ENOBUFS; |
Eric W. Biederman | 11aa9c2 | 2015-05-08 21:09:13 -0500 | [diff] [blame] | 170 | sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot, kern); |
Ian Morris | 63159f2 | 2015-03-29 14:00:04 +0100 | [diff] [blame] | 171 | if (!sk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | goto out; |
| 173 | |
| 174 | sock_init_data(sock, sk); |
| 175 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 176 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | if (INET_PROTOSW_REUSE & answer_flags) |
Pavel Emelyanov | 4a17fd5 | 2012-04-19 03:39:36 +0000 | [diff] [blame] | 178 | sk->sk_reuse = SK_CAN_REUSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | inet = inet_sk(sk); |
Paul Moore | 469de9b | 2007-01-09 14:37:06 -0800 | [diff] [blame] | 181 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | if (SOCK_RAW == sock->type) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 184 | inet->inet_num = protocol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | if (IPPROTO_RAW == protocol) |
| 186 | inet->hdrincl = 1; |
| 187 | } |
| 188 | |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 189 | sk->sk_destruct = inet_sock_destruct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | sk->sk_family = PF_INET6; |
| 191 | sk->sk_protocol = protocol; |
| 192 | |
| 193 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; |
| 194 | |
| 195 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); |
| 196 | np->hop_limit = -1; |
David S. Miller | f935aa9 | 2010-05-03 23:42:27 -0700 | [diff] [blame] | 197 | np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | np->mc_loop = 1; |
| 199 | np->pmtudisc = IPV6_PMTUDISC_WANT; |
Eric Dumazet | 9fe516b | 2014-06-27 08:36:16 -0700 | [diff] [blame] | 200 | sk->sk_ipv6only = net->ipv6.sysctl.bindv6only; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* Init the ipv4 part of the socket since we can have sockets |
| 203 | * using v6 API for ipv4. |
| 204 | */ |
| 205 | inet->uc_ttl = -1; |
| 206 | |
| 207 | inet->mc_loop = 1; |
| 208 | inet->mc_ttl = 1; |
| 209 | inet->mc_index = 0; |
| 210 | inet->mc_list = NULL; |
Jiri Benc | 4c507d2 | 2012-02-09 09:35:49 +0000 | [diff] [blame] | 211 | inet->rcv_tos = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Hannes Frederic Sowa | 974eda1 | 2013-12-14 05:13:38 +0100 | [diff] [blame] | 213 | if (net->ipv4.sysctl_ip_no_pmtu_disc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | inet->pmtudisc = IP_PMTUDISC_DONT; |
| 215 | else |
| 216 | inet->pmtudisc = IP_PMTUDISC_WANT; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 217 | /* |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 218 | * Increment only the relevant sk_prot->socks debug field, this changes |
| 219 | * the previous behaviour of incrementing both the equivalent to |
| 220 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. |
| 221 | * |
| 222 | * This allows better debug granularity as we'll know exactly how many |
| 223 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 |
| 224 | * transport protocol socks. -acme |
| 225 | */ |
| 226 | sk_refcnt_debug_inc(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 228 | if (inet->inet_num) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | /* It assumes that any protocol which allows |
| 230 | * the user to assign a number at socket |
| 231 | * creation time automatically shares. |
| 232 | */ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 233 | inet->inet_sport = htons(inet->inet_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | sk->sk_prot->hash(sk); |
| 235 | } |
| 236 | if (sk->sk_prot->init) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 237 | err = sk->sk_prot->init(sk); |
| 238 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | sk_common_release(sk); |
| 240 | goto out; |
| 241 | } |
| 242 | } |
| 243 | out: |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 244 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | out_rcu_unlock: |
| 246 | rcu_read_unlock(); |
| 247 | goto out; |
| 248 | } |
| 249 | |
| 250 | |
| 251 | /* bind for INET6 API */ |
| 252 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) |
| 253 | { |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 254 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | struct sock *sk = sock->sk; |
| 256 | struct inet_sock *inet = inet_sk(sk); |
| 257 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 258 | struct net *net = sock_net(sk); |
Al Viro | fd68322 | 2006-09-26 22:17:51 -0700 | [diff] [blame] | 259 | __be32 v4addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | unsigned short snum; |
| 261 | int addr_type = 0; |
| 262 | int err = 0; |
| 263 | |
| 264 | /* If the socket has its own bind function then use it. */ |
| 265 | if (sk->sk_prot->bind) |
| 266 | return sk->sk_prot->bind(sk, uaddr, addr_len); |
| 267 | |
| 268 | if (addr_len < SIN6_LEN_RFC2133) |
| 269 | return -EINVAL; |
Marcus Meissner | 5a079c3 | 2011-06-06 06:00:07 +0000 | [diff] [blame] | 270 | |
| 271 | if (addr->sin6_family != AF_INET6) |
Marcus Meissner | c349a52 | 2011-07-04 01:30:29 +0000 | [diff] [blame] | 272 | return -EAFNOSUPPORT; |
Marcus Meissner | 5a079c3 | 2011-06-06 06:00:07 +0000 | [diff] [blame] | 273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
| 275 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) |
| 276 | return -EINVAL; |
| 277 | |
| 278 | snum = ntohs(addr->sin6_port); |
Eric W. Biederman | 3594698 | 2012-11-16 03:03:12 +0000 | [diff] [blame] | 279 | 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] | 280 | return -EACCES; |
| 281 | |
| 282 | lock_sock(sk); |
| 283 | |
| 284 | /* Check these errors (active socket, double bind). */ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 285 | if (sk->sk_state != TCP_CLOSE || inet->inet_num) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | err = -EINVAL; |
| 287 | goto out; |
| 288 | } |
| 289 | |
| 290 | /* Check if the address belongs to the host. */ |
| 291 | if (addr_type == IPV6_ADDR_MAPPED) { |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 292 | int chk_addr_ret; |
| 293 | |
Vlad Yasevich | 783ed5a | 2009-03-24 16:24:48 +0000 | [diff] [blame] | 294 | /* Binding to v4-mapped address on a v6-only socket |
| 295 | * makes no sense |
| 296 | */ |
Eric Dumazet | 9fe516b | 2014-06-27 08:36:16 -0700 | [diff] [blame] | 297 | if (sk->sk_ipv6only) { |
Vlad Yasevich | 783ed5a | 2009-03-24 16:24:48 +0000 | [diff] [blame] | 298 | err = -EINVAL; |
| 299 | goto out; |
| 300 | } |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 301 | |
Uwe Kleine-König | a34f0b3 | 2010-12-10 14:55:42 +0100 | [diff] [blame] | 302 | /* Reproduce AF_INET checks to make the bindings consistent */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | v4addr = addr->sin6_addr.s6_addr32[3]; |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 304 | chk_addr_ret = inet_addr_type(net, v4addr); |
Vincent Bernat | 49a6015 | 2014-09-05 15:09:03 +0200 | [diff] [blame] | 305 | if (!net->ipv4.sysctl_ip_nonlocal_bind && |
Vlad Yasevich | 63d9950 | 2009-03-24 16:24:50 +0000 | [diff] [blame] | 306 | !(inet->freebind || inet->transparent) && |
| 307 | v4addr != htonl(INADDR_ANY) && |
| 308 | chk_addr_ret != RTN_LOCAL && |
| 309 | chk_addr_ret != RTN_MULTICAST && |
Bruno Prémont | ca6982b | 2009-08-23 19:06:28 -0700 | [diff] [blame] | 310 | chk_addr_ret != RTN_BROADCAST) { |
| 311 | err = -EADDRNOTAVAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | goto out; |
Bruno Prémont | ca6982b | 2009-08-23 19:06:28 -0700 | [diff] [blame] | 313 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } else { |
| 315 | if (addr_type != IPV6_ADDR_ANY) { |
| 316 | struct net_device *dev = NULL; |
| 317 | |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 318 | rcu_read_lock(); |
Hannes Frederic Sowa | 842df07 | 2013-03-08 02:07:19 +0000 | [diff] [blame] | 319 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | if (addr_len >= sizeof(struct sockaddr_in6) && |
| 321 | addr->sin6_scope_id) { |
| 322 | /* Override any existing binding, if another one |
| 323 | * is supplied by user. |
| 324 | */ |
| 325 | sk->sk_bound_dev_if = addr->sin6_scope_id; |
| 326 | } |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 327 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | /* Binding to link-local address requires an interface */ |
| 329 | if (!sk->sk_bound_dev_if) { |
| 330 | err = -EINVAL; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 331 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 333 | dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | if (!dev) { |
| 335 | err = -ENODEV; |
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 | } |
| 338 | } |
| 339 | |
| 340 | /* ipv4 addr of the socket is invalid. Only the |
| 341 | * unspecified and mapped address have a v4 equivalent. |
| 342 | */ |
| 343 | v4addr = LOOPBACK4_IPV6; |
| 344 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { |
Tom Herbert | 35a256f | 2015-07-08 16:58:22 -0700 | [diff] [blame^] | 345 | if (!net->ipv6.sysctl.ip_nonlocal_bind && |
| 346 | !(inet->freebind || inet->transparent) && |
Balazs Scheidler | 0a513f6 | 2010-10-21 16:10:03 +0200 | [diff] [blame] | 347 | !ipv6_chk_addr(net, &addr->sin6_addr, |
Daniel Lezcano | bfeade0 | 2008-01-10 22:43:18 -0800 | [diff] [blame] | 348 | dev, 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | err = -EADDRNOTAVAIL; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 350 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | } |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 353 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | } |
| 355 | } |
| 356 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 357 | inet->inet_rcv_saddr = v4addr; |
| 358 | inet->inet_saddr = v4addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 360 | sk->sk_v6_rcv_saddr = addr->sin6_addr; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 363 | np->saddr = addr->sin6_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | /* Make sure we are allowed to bind here. */ |
Eric Dumazet | 90c337d | 2015-06-06 21:17:57 -0700 | [diff] [blame] | 366 | if ((snum || !inet->bind_address_no_port) && |
| 367 | sk->sk_prot->get_port(sk, snum)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | inet_reset_saddr(sk); |
| 369 | err = -EADDRINUSE; |
| 370 | goto out; |
| 371 | } |
| 372 | |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 373 | if (addr_type != IPV6_ADDR_ANY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 375 | if (addr_type != IPV6_ADDR_MAPPED) |
Eric Dumazet | 9fe516b | 2014-06-27 08:36:16 -0700 | [diff] [blame] | 376 | sk->sk_ipv6only = 1; |
Vlad Yasevich | 0f8d3c7 | 2009-03-24 16:24:49 +0000 | [diff] [blame] | 377 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | if (snum) |
| 379 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 380 | inet->inet_sport = htons(inet->inet_num); |
| 381 | inet->inet_dport = 0; |
| 382 | inet->inet_daddr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | out: |
| 384 | release_sock(sk); |
| 385 | return err; |
Eric Dumazet | 16ba5e8 | 2009-11-02 12:10:39 +0100 | [diff] [blame] | 386 | out_unlock: |
| 387 | rcu_read_unlock(); |
| 388 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 390 | EXPORT_SYMBOL(inet6_bind); |
| 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | int inet6_release(struct socket *sock) |
| 393 | { |
| 394 | struct sock *sk = sock->sk; |
| 395 | |
Ian Morris | 63159f2 | 2015-03-29 14:00:04 +0100 | [diff] [blame] | 396 | if (!sk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | return -EINVAL; |
| 398 | |
| 399 | /* Free mc lists */ |
| 400 | ipv6_sock_mc_close(sk); |
| 401 | |
| 402 | /* Free ac lists */ |
| 403 | ipv6_sock_ac_close(sk); |
| 404 | |
| 405 | return inet_release(sock); |
| 406 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 407 | EXPORT_SYMBOL(inet6_release); |
| 408 | |
Brian Haley | 7d06b2e | 2008-06-14 17:04:49 -0700 | [diff] [blame] | 409 | void inet6_destroy_sock(struct sock *sk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | { |
| 411 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 412 | struct sk_buff *skb; |
| 413 | struct ipv6_txoptions *opt; |
| 414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | /* Release rx options */ |
| 416 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 417 | skb = xchg(&np->pktoptions, NULL); |
Ian Morris | 53b24b8 | 2015-03-29 14:00:05 +0100 | [diff] [blame] | 418 | if (skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | kfree_skb(skb); |
| 420 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 421 | skb = xchg(&np->rxpmtu, NULL); |
Ian Morris | 53b24b8 | 2015-03-29 14:00:05 +0100 | [diff] [blame] | 422 | if (skb) |
Brian Haley | 4b340ae | 2010-04-23 11:26:09 +0000 | [diff] [blame] | 423 | kfree_skb(skb); |
| 424 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | /* Free flowlabels */ |
| 426 | fl6_free_socklist(sk); |
| 427 | |
| 428 | /* Free tx options */ |
| 429 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 430 | opt = xchg(&np->opt, NULL); |
Ian Morris | 53b24b8 | 2015-03-29 14:00:05 +0100 | [diff] [blame] | 431 | if (opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | sock_kfree_s(sk, opt, opt->tot_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | } |
Arnaldo Carvalho de Melo | 3cf3dc6 | 2005-12-13 23:23:20 -0800 | [diff] [blame] | 434 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
| 435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | /* |
| 437 | * This does both peername and sockname. |
| 438 | */ |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
| 441 | int *uaddr_len, int peer) |
| 442 | { |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 443 | struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | struct sock *sk = sock->sk; |
| 445 | struct inet_sock *inet = inet_sk(sk); |
| 446 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 447 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | sin->sin6_family = AF_INET6; |
| 449 | sin->sin6_flowinfo = 0; |
| 450 | sin->sin6_scope_id = 0; |
| 451 | if (peer) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 452 | if (!inet->inet_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | return -ENOTCONN; |
| 454 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && |
| 455 | peer == 1) |
| 456 | return -ENOTCONN; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 457 | sin->sin6_port = inet->inet_dport; |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 458 | sin->sin6_addr = sk->sk_v6_daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | if (np->sndflow) |
| 460 | sin->sin6_flowinfo = np->flow_label; |
| 461 | } else { |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 462 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 463 | sin->sin6_addr = np->saddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | else |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 465 | sin->sin6_addr = sk->sk_v6_rcv_saddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 467 | sin->sin6_port = inet->inet_sport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | } |
Hannes Frederic Sowa | 842df07 | 2013-03-08 02:07:19 +0000 | [diff] [blame] | 469 | sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr, |
| 470 | sk->sk_bound_dev_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | *uaddr_len = sizeof(*sin); |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 472 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 474 | EXPORT_SYMBOL(inet6_getname); |
| 475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 477 | { |
| 478 | struct sock *sk = sock->sk; |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 479 | struct net *net = sock_net(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 481 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | case SIOCGSTAMP: |
| 483 | return sock_get_timestamp(sk, (struct timeval __user *)arg); |
| 484 | |
Eric Dumazet | ae40eb1 | 2007-03-18 17:33:16 -0700 | [diff] [blame] | 485 | case SIOCGSTAMPNS: |
| 486 | return sock_get_timestampns(sk, (struct timespec __user *)arg); |
| 487 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | case SIOCADDRT: |
| 489 | case SIOCDELRT: |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 490 | |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 491 | return ipv6_route_ioctl(net, cmd, (void __user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
| 493 | case SIOCSIFADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 494 | return addrconf_add_ifaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | case SIOCDIFADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 496 | return addrconf_del_ifaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | case SIOCSIFDSTADDR: |
Daniel Lezcano | af28493 | 2008-03-05 10:46:57 -0800 | [diff] [blame] | 498 | return addrconf_set_dstaddr(net, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | default: |
Christoph Hellwig | b5e5fa5 | 2006-01-03 14:18:33 -0800 | [diff] [blame] | 500 | if (!sk->sk_prot->ioctl) |
| 501 | return -ENOIOCTLCMD; |
| 502 | return sk->sk_prot->ioctl(sk, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | } |
| 504 | /*NOTREACHED*/ |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 505 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 507 | EXPORT_SYMBOL(inet6_ioctl); |
| 508 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 509 | const struct proto_ops inet6_stream_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 510 | .family = PF_INET6, |
| 511 | .owner = THIS_MODULE, |
| 512 | .release = inet6_release, |
| 513 | .bind = inet6_bind, |
| 514 | .connect = inet_stream_connect, /* ok */ |
| 515 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 516 | .accept = inet_accept, /* ok */ |
| 517 | .getname = inet6_getname, |
| 518 | .poll = tcp_poll, /* ok */ |
| 519 | .ioctl = inet6_ioctl, /* must change */ |
| 520 | .listen = inet_listen, /* ok */ |
| 521 | .shutdown = inet_shutdown, /* ok */ |
| 522 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 523 | .getsockopt = sock_common_getsockopt, /* ok */ |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 524 | .sendmsg = inet_sendmsg, /* ok */ |
| 525 | .recvmsg = inet_recvmsg, /* ok */ |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 526 | .mmap = sock_no_mmap, |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 527 | .sendpage = inet_sendpage, |
Jens Axboe | a0974dd | 2007-11-06 23:31:58 -0800 | [diff] [blame] | 528 | .splice_read = tcp_splice_read, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 529 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 530 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 531 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 532 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | }; |
| 534 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 535 | const struct proto_ops inet6_dgram_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 536 | .family = PF_INET6, |
| 537 | .owner = THIS_MODULE, |
| 538 | .release = inet6_release, |
| 539 | .bind = inet6_bind, |
| 540 | .connect = inet_dgram_connect, /* ok */ |
| 541 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 542 | .accept = sock_no_accept, /* a do nothing */ |
| 543 | .getname = inet6_getname, |
| 544 | .poll = udp_poll, /* ok */ |
| 545 | .ioctl = inet6_ioctl, /* must change */ |
| 546 | .listen = sock_no_listen, /* ok */ |
| 547 | .shutdown = inet_shutdown, /* ok */ |
| 548 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 549 | .getsockopt = sock_common_getsockopt, /* ok */ |
| 550 | .sendmsg = inet_sendmsg, /* ok */ |
Changli Gao | 7ba4291 | 2010-07-10 20:41:55 +0000 | [diff] [blame] | 551 | .recvmsg = inet_recvmsg, /* ok */ |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 552 | .mmap = sock_no_mmap, |
| 553 | .sendpage = sock_no_sendpage, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 554 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 555 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 556 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 557 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | }; |
| 559 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 560 | static const struct net_proto_family inet6_family_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | .family = PF_INET6, |
| 562 | .create = inet6_create, |
| 563 | .owner = THIS_MODULE, |
| 564 | }; |
| 565 | |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 566 | int inet6_register_protosw(struct inet_protosw *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | { |
| 568 | struct list_head *lh; |
| 569 | struct inet_protosw *answer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | struct list_head *last_perm; |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 571 | int protocol = p->protocol; |
| 572 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
| 574 | spin_lock_bh(&inetsw6_lock); |
| 575 | |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 576 | ret = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | if (p->type >= SOCK_MAX) |
| 578 | goto out_illegal; |
| 579 | |
| 580 | /* If we are trying to override a permanent protocol, bail. */ |
| 581 | answer = NULL; |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 582 | ret = -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | last_perm = &inetsw6[p->type]; |
| 584 | list_for_each(lh, &inetsw6[p->type]) { |
| 585 | answer = list_entry(lh, struct inet_protosw, list); |
| 586 | |
| 587 | /* Check only the non-wild match. */ |
| 588 | if (INET_PROTOSW_PERMANENT & answer->flags) { |
| 589 | if (protocol == answer->protocol) |
| 590 | break; |
| 591 | last_perm = lh; |
| 592 | } |
| 593 | |
| 594 | answer = NULL; |
| 595 | } |
| 596 | if (answer) |
| 597 | goto out_permanent; |
| 598 | |
| 599 | /* Add the new entry after the last permanent entry if any, so that |
| 600 | * the new entry does not override a permanent entry when matched with |
| 601 | * a wild-card protocol. But it is allowed to override any existing |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 602 | * non-permanent entry. This means that when we remove this entry, the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | * system automatically returns to the old behavior. |
| 604 | */ |
| 605 | list_add_rcu(&p->list, last_perm); |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 606 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | out: |
| 608 | spin_unlock_bh(&inetsw6_lock); |
Daniel Lezcano | 87c3efb | 2007-12-11 02:25:01 -0800 | [diff] [blame] | 609 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | out_permanent: |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 612 | pr_err("Attempt to override permanent protocol %d\n", protocol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | goto out; |
| 614 | |
| 615 | out_illegal: |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 616 | pr_err("Ignoring attempt to register invalid socket type %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | p->type); |
| 618 | goto out; |
| 619 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 620 | EXPORT_SYMBOL(inet6_register_protosw); |
| 621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | void |
| 623 | inet6_unregister_protosw(struct inet_protosw *p) |
| 624 | { |
| 625 | if (INET_PROTOSW_PERMANENT & p->flags) { |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 626 | pr_err("Attempt to unregister permanent protocol %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | p->protocol); |
| 628 | } else { |
| 629 | spin_lock_bh(&inetsw6_lock); |
| 630 | list_del_rcu(&p->list); |
| 631 | spin_unlock_bh(&inetsw6_lock); |
| 632 | |
| 633 | synchronize_net(); |
| 634 | } |
| 635 | } |
YOSHIFUJI Hideaki | 7159039 | 2007-02-22 22:05:40 +0900 | [diff] [blame] | 636 | EXPORT_SYMBOL(inet6_unregister_protosw); |
| 637 | |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 638 | int inet6_sk_rebuild_header(struct sock *sk) |
| 639 | { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 640 | struct ipv6_pinfo *np = inet6_sk(sk); |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 641 | struct dst_entry *dst; |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 642 | |
| 643 | dst = __sk_dst_check(sk, np->dst_cookie); |
| 644 | |
Ian Morris | 63159f2 | 2015-03-29 14:00:04 +0100 | [diff] [blame] | 645 | if (!dst) { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 646 | struct inet_sock *inet = inet_sk(sk); |
Arnaud Ebalard | 20c59de | 2010-06-01 21:35:01 +0000 | [diff] [blame] | 647 | struct in6_addr *final_p, final; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 648 | struct flowi6 fl6; |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 649 | |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 650 | memset(&fl6, 0, sizeof(fl6)); |
| 651 | fl6.flowi6_proto = sk->sk_protocol; |
Eric Dumazet | efe4208 | 2013-10-03 15:42:29 -0700 | [diff] [blame] | 652 | fl6.daddr = sk->sk_v6_daddr; |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 653 | fl6.saddr = np->saddr; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 654 | fl6.flowlabel = np->flow_label; |
| 655 | fl6.flowi6_oif = sk->sk_bound_dev_if; |
| 656 | fl6.flowi6_mark = sk->sk_mark; |
David S. Miller | 1958b85 | 2011-03-12 16:36:19 -0500 | [diff] [blame] | 657 | fl6.fl6_dport = inet->inet_dport; |
| 658 | fl6.fl6_sport = inet->inet_sport; |
David S. Miller | 4c9483b | 2011-03-12 16:22:43 -0500 | [diff] [blame] | 659 | security_sk_classify_flow(sk, flowi6_to_flowi(&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 | final_p = fl6_update_dst(&fl6, np->opt, &final); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 662 | |
Steffen Klassert | 0e0d44a | 2013-08-28 08:04:14 +0200 | [diff] [blame] | 663 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 664 | if (IS_ERR(dst)) { |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 665 | sk->sk_route_caps = 0; |
David S. Miller | 68d0c6d | 2011-03-01 13:19:07 -0800 | [diff] [blame] | 666 | sk->sk_err_soft = -PTR_ERR(dst); |
| 667 | return PTR_ERR(dst); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 668 | } |
| 669 | |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 670 | __ip6_dst_store(sk, dst, NULL, NULL); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | return 0; |
| 674 | } |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 675 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
| 676 | |
Eric Dumazet | a224772 | 2014-09-27 09:50:56 -0700 | [diff] [blame] | 677 | bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb, |
| 678 | const struct inet6_skb_parm *opt) |
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); |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 681 | |
| 682 | if (np->rxopt.all) { |
Florian Westphal | 8b58a39 | 2015-07-08 23:32:12 +0200 | [diff] [blame] | 683 | if (((opt->flags & IP6SKB_HOPBYHOP) && |
| 684 | (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) || |
Florent Fourcot | ac1eabc | 2013-12-08 15:47:01 +0100 | [diff] [blame] | 685 | (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) && |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 686 | np->rxopt.bits.rxflow) || |
| 687 | (opt->srcrt && (np->rxopt.bits.srcrt || |
| 688 | np->rxopt.bits.osrcrt)) || |
| 689 | ((opt->dst1 || opt->dst0) && |
| 690 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) |
Eric Dumazet | 92113bf | 2012-05-18 08:14:11 +0200 | [diff] [blame] | 691 | return true; |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 692 | } |
Eric Dumazet | 92113bf | 2012-05-18 08:14:11 +0200 | [diff] [blame] | 693 | return false; |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 694 | } |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 695 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
| 696 | |
Stephen Hemminger | 7546dd9 | 2009-03-09 08:18:29 +0000 | [diff] [blame] | 697 | static struct packet_type ipv6_packet_type __read_mostly = { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 698 | .type = cpu_to_be16(ETH_P_IPV6), |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 699 | .func = ipv6_rcv, |
Vlad Yasevich | 22061d8 | 2012-11-15 08:49:11 +0000 | [diff] [blame] | 700 | }; |
| 701 | |
YOSHIFUJI Hideaki | 662397f | 2008-02-27 23:14:03 +0900 | [diff] [blame] | 702 | static int __init ipv6_packet_init(void) |
| 703 | { |
| 704 | dev_add_pack(&ipv6_packet_type); |
| 705 | return 0; |
| 706 | } |
| 707 | |
| 708 | static void ipv6_packet_cleanup(void) |
| 709 | { |
| 710 | dev_remove_pack(&ipv6_packet_type); |
| 711 | } |
| 712 | |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 713 | static int __net_init ipv6_init_mibs(struct net *net) |
| 714 | { |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 715 | int i; |
| 716 | |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 717 | net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib); |
| 718 | if (!net->mib.udp_stats_in6) |
Denis V. Lunev | 0c7ed67 | 2008-10-07 14:49:36 -0700 | [diff] [blame] | 719 | return -ENOMEM; |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 720 | net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib); |
| 721 | if (!net->mib.udplite_stats_in6) |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 722 | goto err_udplite_mib; |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 723 | net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib); |
| 724 | if (!net->mib.ipv6_statistics) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 725 | goto err_ip_mib; |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 726 | |
| 727 | for_each_possible_cpu(i) { |
| 728 | struct ipstats_mib *af_inet6_stats; |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 729 | af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i); |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 730 | u64_stats_init(&af_inet6_stats->syncp); |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 734 | net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib); |
| 735 | if (!net->mib.icmpv6_statistics) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 736 | goto err_icmp_mib; |
Eric Dumazet | 2a24444 | 2011-11-13 01:24:04 +0000 | [diff] [blame] | 737 | net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib), |
| 738 | GFP_KERNEL); |
| 739 | if (!net->mib.icmpv6msg_statistics) |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 740 | goto err_icmpmsg_mib; |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 741 | return 0; |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 742 | |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 743 | err_icmpmsg_mib: |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 744 | free_percpu(net->mib.icmpv6_statistics); |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 745 | err_icmp_mib: |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 746 | free_percpu(net->mib.ipv6_statistics); |
Denis V. Lunev | 9261e53 | 2008-10-08 10:36:03 -0700 | [diff] [blame] | 747 | err_ip_mib: |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 748 | free_percpu(net->mib.udplite_stats_in6); |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 749 | err_udplite_mib: |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 750 | free_percpu(net->mib.udp_stats_in6); |
Denis V. Lunev | be713a4 | 2008-10-07 14:50:06 -0700 | [diff] [blame] | 751 | return -ENOMEM; |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 752 | } |
| 753 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 754 | static void ipv6_cleanup_mibs(struct net *net) |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 755 | { |
WANG Cong | 698365f | 2014-05-05 15:55:55 -0700 | [diff] [blame] | 756 | free_percpu(net->mib.udp_stats_in6); |
| 757 | free_percpu(net->mib.udplite_stats_in6); |
| 758 | free_percpu(net->mib.ipv6_statistics); |
| 759 | free_percpu(net->mib.icmpv6_statistics); |
Eric Dumazet | 2a24444 | 2011-11-13 01:24:04 +0000 | [diff] [blame] | 760 | kfree(net->mib.icmpv6msg_statistics); |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 761 | } |
| 762 | |
Alexey Dobriyan | e7dc849 | 2008-10-13 18:54:07 -0700 | [diff] [blame] | 763 | static int __net_init inet6_net_init(struct net *net) |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 764 | { |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 765 | int err = 0; |
| 766 | |
Daniel Lezcano | 99bc9c4 | 2008-01-10 02:54:53 -0800 | [diff] [blame] | 767 | net->ipv6.sysctl.bindv6only = 0; |
Daniel Lezcano | 41a7690 | 2008-01-10 03:02:40 -0800 | [diff] [blame] | 768 | net->ipv6.sysctl.icmpv6_time = 1*HZ; |
Florent Fourcot | 6444f72 | 2014-01-17 17:15:05 +0100 | [diff] [blame] | 769 | net->ipv6.sysctl.flowlabel_consistency = 1; |
Tom Herbert | cb1ce2e | 2014-07-01 21:33:10 -0700 | [diff] [blame] | 770 | net->ipv6.sysctl.auto_flowlabels = 0; |
Hannes Frederic Sowa | 1855b7c | 2015-03-23 23:36:05 +0100 | [diff] [blame] | 771 | net->ipv6.sysctl.idgen_retries = 3; |
| 772 | net->ipv6.sysctl.idgen_delay = 1 * HZ; |
Tom Herbert | 82a584b | 2015-04-29 15:33:21 -0700 | [diff] [blame] | 773 | net->ipv6.sysctl.flowlabel_state_ranges = 1; |
Hannes Frederic Sowa | 812918c | 2014-10-06 19:58:37 +0200 | [diff] [blame] | 774 | atomic_set(&net->ipv6.fib6_sernum, 1); |
Daniel Lezcano | e71e034 | 2008-01-10 02:56:03 -0800 | [diff] [blame] | 775 | |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 776 | err = ipv6_init_mibs(net); |
| 777 | if (err) |
| 778 | return err; |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 779 | #ifdef CONFIG_PROC_FS |
| 780 | err = udp6_proc_init(net); |
| 781 | if (err) |
| 782 | goto out; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 783 | err = tcp6_proc_init(net); |
| 784 | if (err) |
| 785 | goto proc_tcp6_fail; |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 786 | err = ac6_proc_init(net); |
| 787 | if (err) |
| 788 | goto proc_ac6_fail; |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 789 | #endif |
| 790 | return err; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 791 | |
| 792 | #ifdef CONFIG_PROC_FS |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 793 | proc_ac6_fail: |
| 794 | tcp6_proc_exit(net); |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 795 | proc_tcp6_fail: |
| 796 | udp6_proc_exit(net); |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 797 | out: |
| 798 | ipv6_cleanup_mibs(net); |
| 799 | return err; |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 800 | #endif |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 801 | } |
| 802 | |
Alexey Dobriyan | 2c8c1e7 | 2010-01-17 03:35:32 +0000 | [diff] [blame] | 803 | static void __net_exit inet6_net_exit(struct net *net) |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 804 | { |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 805 | #ifdef CONFIG_PROC_FS |
| 806 | udp6_proc_exit(net); |
Daniel Lezcano | 6f8b13b | 2008-03-21 04:14:45 -0700 | [diff] [blame] | 807 | tcp6_proc_exit(net); |
Daniel Lezcano | 6ab57e7 | 2008-03-26 16:52:32 -0700 | [diff] [blame] | 808 | ac6_proc_exit(net); |
Daniel Lezcano | 0c96d8c | 2008-03-21 04:14:17 -0700 | [diff] [blame] | 809 | #endif |
Denis V. Lunev | e43291c | 2008-10-07 14:48:53 -0700 | [diff] [blame] | 810 | ipv6_cleanup_mibs(net); |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | static struct pernet_operations inet6_net_ops = { |
| 814 | .init = inet6_net_init, |
| 815 | .exit = inet6_net_exit, |
| 816 | }; |
| 817 | |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 818 | static const struct ipv6_stub ipv6_stub_impl = { |
| 819 | .ipv6_sock_mc_join = ipv6_sock_mc_join, |
| 820 | .ipv6_sock_mc_drop = ipv6_sock_mc_drop, |
| 821 | .ipv6_dst_lookup = ip6_dst_lookup, |
| 822 | .udpv6_encap_enable = udpv6_encap_enable, |
Cong Wang | f564f45 | 2013-08-31 13:44:36 +0800 | [diff] [blame] | 823 | .ndisc_send_na = ndisc_send_na, |
Cong Wang | e15a00a | 2013-08-31 13:44:34 +0800 | [diff] [blame] | 824 | .nd_tbl = &nd_tbl, |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 825 | }; |
| 826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | static int __init inet6_init(void) |
| 828 | { |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 829 | struct list_head *r; |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 830 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | |
Eyal Birger | b4772ef | 2015-03-01 14:58:29 +0200 | [diff] [blame] | 832 | sock_skb_cb_check_size(sizeof(struct inet6_skb_parm)); |
YOSHIFUJI Hideaki | ef047f5 | 2006-09-01 00:29:06 -0700 | [diff] [blame] | 833 | |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 834 | /* Register the socket-side information for inet6_create. */ |
Eldad Zack | 647c0c7 | 2012-05-05 10:13:53 +0000 | [diff] [blame] | 835 | for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 836 | INIT_LIST_HEAD(r); |
| 837 | |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 838 | if (disable_ipv6_mod) { |
Joe Perches | f321383 | 2012-05-15 14:11:53 +0000 | [diff] [blame] | 839 | pr_info("Loaded, but administratively disabled, reboot required to enable\n"); |
Brian Haley | fe7ca2e | 2009-03-04 03:18:11 -0800 | [diff] [blame] | 840 | goto out; |
| 841 | } |
| 842 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | err = proto_register(&tcpv6_prot, 1); |
| 844 | if (err) |
| 845 | goto out; |
| 846 | |
| 847 | err = proto_register(&udpv6_prot, 1); |
| 848 | if (err) |
| 849 | goto out_unregister_tcp_proto; |
| 850 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 851 | err = proto_register(&udplitev6_prot, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | if (err) |
| 853 | goto out_unregister_udp_proto; |
| 854 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 855 | err = proto_register(&rawv6_prot, 1); |
| 856 | if (err) |
| 857 | goto out_unregister_udplite_proto; |
| 858 | |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 859 | err = proto_register(&pingv6_prot, 1); |
| 860 | if (err) |
| 861 | goto out_unregister_ping_proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | /* We MUST register RAW sockets before we create the ICMP6, |
| 864 | * IGMP6, or NDISC control sockets. |
| 865 | */ |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 866 | err = rawv6_init(); |
| 867 | if (err) |
| 868 | goto out_unregister_raw_proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | |
| 870 | /* Register the family here so that the init calls below will |
| 871 | * be able to create sockets. (?? is this dangerous ??) |
| 872 | */ |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 873 | err = sock_register(&inet6_family_ops); |
| 874 | if (err) |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 875 | goto out_sock_register_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | /* |
| 878 | * ipngwg API draft makes clear that the correct semantics |
| 879 | * 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] | 880 | * in a host available by both INET and INET6 APIs and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | * able to communicate via both network protocols. |
| 882 | */ |
| 883 | |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 884 | err = register_pernet_subsys(&inet6_net_ops); |
| 885 | if (err) |
| 886 | goto register_pernet_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 887 | err = icmpv6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | if (err) |
| 889 | goto icmp_fail; |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 890 | err = ip6_mr_init(); |
| 891 | if (err) |
| 892 | goto ipmr_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 893 | err = ndisc_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | if (err) |
| 895 | goto ndisc_fail; |
Denis V. Lunev | 9b0f976 | 2008-02-29 11:13:15 -0800 | [diff] [blame] | 896 | err = igmp6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | if (err) |
| 898 | goto igmp_fail; |
Cong Wang | 5f81bd2 | 2013-08-31 13:44:30 +0800 | [diff] [blame] | 899 | |
| 900 | ipv6_stub = &ipv6_stub_impl; |
| 901 | |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 902 | err = ipv6_netfilter_init(); |
| 903 | if (err) |
| 904 | goto netfilter_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | /* Create /proc/foo6 entries. */ |
| 906 | #ifdef CONFIG_PROC_FS |
| 907 | err = -ENOMEM; |
| 908 | if (raw6_proc_init()) |
| 909 | goto proc_raw6_fail; |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 910 | if (udplite6_proc_init()) |
| 911 | goto proc_udplite6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | if (ipv6_misc_proc_init()) |
| 913 | goto proc_misc6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | if (if6_proc_init()) |
| 915 | goto proc_if6_fail; |
| 916 | #endif |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 917 | err = ip6_route_init(); |
| 918 | if (err) |
| 919 | goto ip6_route_fail; |
Michal Kubeček | 2c861cc | 2013-09-09 21:45:04 +0200 | [diff] [blame] | 920 | err = ndisc_late_init(); |
| 921 | if (err) |
| 922 | goto ndisc_late_fail; |
Daniel Lezcano | 0a3e78a | 2007-12-11 02:23:18 -0800 | [diff] [blame] | 923 | err = ip6_flowlabel_init(); |
| 924 | if (err) |
| 925 | goto ip6_flowlabel_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | err = addrconf_init(); |
| 927 | if (err) |
| 928 | goto addrconf_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | |
| 930 | /* Init v6 extension headers. */ |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 931 | err = ipv6_exthdrs_init(); |
| 932 | if (err) |
| 933 | goto ipv6_exthdrs_fail; |
| 934 | |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 935 | err = ipv6_frag_init(); |
| 936 | if (err) |
| 937 | goto ipv6_frag_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | |
| 939 | /* Init v6 transport protocols. */ |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 940 | err = udpv6_init(); |
| 941 | if (err) |
| 942 | goto udpv6_fail; |
Herbert Xu | e2ed405 | 2005-07-05 14:41:20 -0700 | [diff] [blame] | 943 | |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 944 | err = udplitev6_init(); |
| 945 | if (err) |
| 946 | goto udplitev6_fail; |
| 947 | |
| 948 | err = tcpv6_init(); |
| 949 | if (err) |
| 950 | goto tcpv6_fail; |
| 951 | |
| 952 | err = ipv6_packet_init(); |
| 953 | if (err) |
| 954 | goto ipv6_packet_fail; |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 955 | |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 956 | err = pingv6_init(); |
| 957 | if (err) |
| 958 | goto pingv6_fail; |
| 959 | |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 960 | #ifdef CONFIG_SYSCTL |
| 961 | err = ipv6_sysctl_register(); |
| 962 | if (err) |
| 963 | goto sysctl_fail; |
| 964 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | out: |
| 966 | return err; |
| 967 | |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 968 | #ifdef CONFIG_SYSCTL |
| 969 | sysctl_fail: |
Vlad Yasevich | eca42aa | 2013-11-16 15:17:24 -0500 | [diff] [blame] | 970 | pingv6_exit(); |
Benjamin Thery | 94911fe | 2008-03-05 10:45:36 -0800 | [diff] [blame] | 971 | #endif |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 972 | pingv6_fail: |
Vlad Yasevich | eca42aa | 2013-11-16 15:17:24 -0500 | [diff] [blame] | 973 | ipv6_packet_cleanup(); |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 974 | ipv6_packet_fail: |
| 975 | tcpv6_exit(); |
| 976 | tcpv6_fail: |
| 977 | udplitev6_exit(); |
| 978 | udplitev6_fail: |
| 979 | udpv6_exit(); |
| 980 | udpv6_fail: |
| 981 | ipv6_frag_exit(); |
Daniel Lezcano | 853cbba | 2007-12-11 02:24:29 -0800 | [diff] [blame] | 982 | ipv6_frag_fail: |
| 983 | ipv6_exthdrs_exit(); |
Daniel Lezcano | 248b238 | 2007-12-11 02:23:54 -0800 | [diff] [blame] | 984 | ipv6_exthdrs_fail: |
| 985 | addrconf_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | addrconf_fail: |
| 987 | ip6_flowlabel_cleanup(); |
Daniel Lezcano | 0a3e78a | 2007-12-11 02:23:18 -0800 | [diff] [blame] | 988 | ip6_flowlabel_fail: |
Michal Kubeček | 2c861cc | 2013-09-09 21:45:04 +0200 | [diff] [blame] | 989 | ndisc_late_cleanup(); |
| 990 | ndisc_late_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | ip6_route_cleanup(); |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 992 | ip6_route_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | #ifdef CONFIG_PROC_FS |
| 994 | if6_proc_exit(); |
| 995 | proc_if6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | ipv6_misc_proc_exit(); |
| 997 | proc_misc6_fail: |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 998 | udplite6_proc_exit(); |
| 999 | proc_udplite6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | raw6_proc_exit(); |
| 1001 | proc_raw6_fail: |
| 1002 | #endif |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 1003 | ipv6_netfilter_fini(); |
| 1004 | netfilter_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | igmp6_cleanup(); |
| 1006 | igmp_fail: |
| 1007 | ndisc_cleanup(); |
| 1008 | ndisc_fail: |
Wang Chen | 623d1a1 | 2008-07-03 12:13:30 +0800 | [diff] [blame] | 1009 | ip6_mr_cleanup(); |
| 1010 | ipmr_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | icmpv6_cleanup(); |
| 1012 | icmp_fail: |
Daniel Lezcano | 81c1c17 | 2008-01-10 02:48:33 -0800 | [diff] [blame] | 1013 | unregister_pernet_subsys(&inet6_net_ops); |
| 1014 | register_pernet_fail: |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 1015 | sock_unregister(PF_INET6); |
Daniel Lezcano | e2fddf5 | 2007-12-07 00:44:29 -0800 | [diff] [blame] | 1016 | rtnl_unregister_all(PF_INET6); |
Daniel Lezcano | 7f4e486 | 2007-12-11 02:25:35 -0800 | [diff] [blame] | 1017 | out_sock_register_fail: |
| 1018 | rawv6_exit(); |
Lorenzo Colitti | 6d0bfe2 | 2013-05-22 20:17:31 +0000 | [diff] [blame] | 1019 | out_unregister_ping_proto: |
| 1020 | proto_unregister(&pingv6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | out_unregister_raw_proto: |
| 1022 | proto_unregister(&rawv6_prot); |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 1023 | out_unregister_udplite_proto: |
| 1024 | proto_unregister(&udplitev6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | out_unregister_udp_proto: |
| 1026 | proto_unregister(&udpv6_prot); |
| 1027 | out_unregister_tcp_proto: |
| 1028 | proto_unregister(&tcpv6_prot); |
| 1029 | goto out; |
| 1030 | } |
| 1031 | module_init(inet6_init); |
| 1032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | MODULE_ALIAS_NETPROTO(PF_INET6); |