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 | * |
| 10 | * $Id: af_inet6.c,v 1.66 2002/02/01 22:01:04 davem Exp $ |
| 11 | * |
| 12 | * Fixes: |
| 13 | * piggy, Karl Knutson : Socket protocol table |
| 14 | * Hideaki YOSHIFUJI : sin6_scope_id support |
| 15 | * Arnaldo Melo : check proc_net_create return, cleanups |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or |
| 18 | * modify it under the terms of the GNU General Public License |
| 19 | * as published by the Free Software Foundation; either version |
| 20 | * 2 of the License, or (at your option) any later version. |
| 21 | */ |
| 22 | |
| 23 | |
| 24 | #include <linux/module.h> |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 25 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/errno.h> |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/socket.h> |
| 29 | #include <linux/in.h> |
| 30 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/timer.h> |
| 32 | #include <linux/string.h> |
| 33 | #include <linux/sockios.h> |
| 34 | #include <linux/net.h> |
| 35 | #include <linux/fcntl.h> |
| 36 | #include <linux/mm.h> |
| 37 | #include <linux/interrupt.h> |
| 38 | #include <linux/proc_fs.h> |
| 39 | #include <linux/stat.h> |
| 40 | #include <linux/init.h> |
| 41 | |
| 42 | #include <linux/inet.h> |
| 43 | #include <linux/netdevice.h> |
| 44 | #include <linux/icmpv6.h> |
| 45 | #include <linux/smp_lock.h> |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 46 | #include <linux/netfilter_ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | #include <net/ip.h> |
| 49 | #include <net/ipv6.h> |
| 50 | #include <net/udp.h> |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 51 | #include <net/udplite.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <net/tcp.h> |
| 53 | #include <net/ipip.h> |
| 54 | #include <net/protocol.h> |
| 55 | #include <net/inet_common.h> |
| 56 | #include <net/transp_v6.h> |
| 57 | #include <net/ip6_route.h> |
| 58 | #include <net/addrconf.h> |
| 59 | #ifdef CONFIG_IPV6_TUNNEL |
| 60 | #include <net/ip6_tunnel.h> |
| 61 | #endif |
Noriaki TAKAMIYA | 2c8d7ca | 2006-08-23 20:31:11 -0700 | [diff] [blame] | 62 | #ifdef CONFIG_IPV6_MIP6 |
| 63 | #include <net/mip6.h> |
| 64 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | #include <asm/uaccess.h> |
| 67 | #include <asm/system.h> |
| 68 | |
| 69 | MODULE_AUTHOR("Cast of dozens"); |
| 70 | MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); |
| 71 | MODULE_LICENSE("GPL"); |
| 72 | |
Brian Haley | ab32ea5 | 2006-09-22 14:15:41 -0700 | [diff] [blame] | 73 | int sysctl_ipv6_bindv6only __read_mostly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | /* The inetsw table contains everything that inet_create needs to |
| 76 | * build a new socket. |
| 77 | */ |
| 78 | static struct list_head inetsw6[SOCK_MAX]; |
| 79 | static DEFINE_SPINLOCK(inetsw6_lock); |
| 80 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) |
| 82 | { |
| 83 | const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); |
| 84 | |
| 85 | return (struct ipv6_pinfo *)(((u8 *)sk) + offset); |
| 86 | } |
| 87 | |
| 88 | static int inet6_create(struct socket *sock, int protocol) |
| 89 | { |
| 90 | struct inet_sock *inet; |
| 91 | struct ipv6_pinfo *np; |
| 92 | struct sock *sk; |
| 93 | struct list_head *p; |
| 94 | struct inet_protosw *answer; |
| 95 | struct proto *answer_prot; |
| 96 | unsigned char answer_flags; |
| 97 | char answer_no_check; |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 98 | int try_loading_module = 0; |
| 99 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
| 101 | /* Look for the requested type/protocol pair. */ |
| 102 | answer = NULL; |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 103 | lookup_protocol: |
| 104 | err = -ESOCKTNOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | rcu_read_lock(); |
| 106 | list_for_each_rcu(p, &inetsw6[sock->type]) { |
| 107 | answer = list_entry(p, struct inet_protosw, list); |
| 108 | |
| 109 | /* Check the non-wild match. */ |
| 110 | if (protocol == answer->protocol) { |
| 111 | if (protocol != IPPROTO_IP) |
| 112 | break; |
| 113 | } else { |
| 114 | /* Check for the two wild cases. */ |
| 115 | if (IPPROTO_IP == protocol) { |
| 116 | protocol = answer->protocol; |
| 117 | break; |
| 118 | } |
| 119 | if (IPPROTO_IP == answer->protocol) |
| 120 | break; |
| 121 | } |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 122 | err = -EPROTONOSUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | answer = NULL; |
| 124 | } |
| 125 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 126 | if (!answer) { |
| 127 | if (try_loading_module < 2) { |
| 128 | rcu_read_unlock(); |
| 129 | /* |
| 130 | * Be more specific, e.g. net-pf-10-proto-132-type-1 |
| 131 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) |
| 132 | */ |
| 133 | if (++try_loading_module == 1) |
| 134 | request_module("net-pf-%d-proto-%d-type-%d", |
| 135 | PF_INET6, protocol, sock->type); |
| 136 | /* |
| 137 | * Fall back to generic, e.g. net-pf-10-proto-132 |
| 138 | * (net-pf-PF_INET6-proto-IPPROTO_SCTP) |
| 139 | */ |
| 140 | else |
| 141 | request_module("net-pf-%d-proto-%d", |
| 142 | PF_INET6, protocol); |
| 143 | goto lookup_protocol; |
| 144 | } else |
| 145 | goto out_rcu_unlock; |
| 146 | } |
| 147 | |
| 148 | err = -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | if (answer->capability > 0 && !capable(answer->capability)) |
| 150 | goto out_rcu_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
| 152 | sock->ops = answer->ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | answer_prot = answer->prot; |
| 154 | answer_no_check = answer->no_check; |
| 155 | answer_flags = answer->flags; |
| 156 | rcu_read_unlock(); |
| 157 | |
| 158 | BUG_TRAP(answer_prot->slab != NULL); |
| 159 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 160 | err = -ENOBUFS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1); |
| 162 | if (sk == NULL) |
| 163 | goto out; |
| 164 | |
| 165 | sock_init_data(sock, sk); |
| 166 | |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 167 | err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | sk->sk_no_check = answer_no_check; |
| 169 | if (INET_PROTOSW_REUSE & answer_flags) |
| 170 | sk->sk_reuse = 1; |
| 171 | |
| 172 | inet = inet_sk(sk); |
Paul Moore | 469de9b | 2007-01-09 14:37:06 -0800 | [diff] [blame] | 173 | inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
| 175 | if (SOCK_RAW == sock->type) { |
| 176 | inet->num = protocol; |
| 177 | if (IPPROTO_RAW == protocol) |
| 178 | inet->hdrincl = 1; |
| 179 | } |
| 180 | |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 181 | sk->sk_destruct = inet_sock_destruct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | sk->sk_family = PF_INET6; |
| 183 | sk->sk_protocol = protocol; |
| 184 | |
| 185 | sk->sk_backlog_rcv = answer->prot->backlog_rcv; |
| 186 | |
| 187 | inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); |
| 188 | np->hop_limit = -1; |
| 189 | np->mcast_hops = -1; |
| 190 | np->mc_loop = 1; |
| 191 | np->pmtudisc = IPV6_PMTUDISC_WANT; |
| 192 | np->ipv6only = sysctl_ipv6_bindv6only; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | /* Init the ipv4 part of the socket since we can have sockets |
| 195 | * using v6 API for ipv4. |
| 196 | */ |
| 197 | inet->uc_ttl = -1; |
| 198 | |
| 199 | inet->mc_loop = 1; |
| 200 | inet->mc_ttl = 1; |
| 201 | inet->mc_index = 0; |
| 202 | inet->mc_list = NULL; |
| 203 | |
| 204 | if (ipv4_config.no_pmtu_disc) |
| 205 | inet->pmtudisc = IP_PMTUDISC_DONT; |
| 206 | else |
| 207 | inet->pmtudisc = IP_PMTUDISC_WANT; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 208 | /* |
Arnaldo Carvalho de Melo | e684897 | 2005-08-09 19:45:38 -0700 | [diff] [blame] | 209 | * Increment only the relevant sk_prot->socks debug field, this changes |
| 210 | * the previous behaviour of incrementing both the equivalent to |
| 211 | * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. |
| 212 | * |
| 213 | * This allows better debug granularity as we'll know exactly how many |
| 214 | * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 |
| 215 | * transport protocol socks. -acme |
| 216 | */ |
| 217 | sk_refcnt_debug_inc(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | if (inet->num) { |
| 220 | /* It assumes that any protocol which allows |
| 221 | * the user to assign a number at socket |
| 222 | * creation time automatically shares. |
| 223 | */ |
Al Viro | e69a4ad | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 224 | inet->sport = htons(inet->num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | sk->sk_prot->hash(sk); |
| 226 | } |
| 227 | if (sk->sk_prot->init) { |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 228 | err = sk->sk_prot->init(sk); |
| 229 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | sk_common_release(sk); |
| 231 | goto out; |
| 232 | } |
| 233 | } |
| 234 | out: |
YOSHIFUJI Hideaki | af1afe8 | 2005-12-02 20:56:57 -0800 | [diff] [blame] | 235 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | out_rcu_unlock: |
| 237 | rcu_read_unlock(); |
| 238 | goto out; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | /* bind for INET6 API */ |
| 243 | int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) |
| 244 | { |
| 245 | struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; |
| 246 | struct sock *sk = sock->sk; |
| 247 | struct inet_sock *inet = inet_sk(sk); |
| 248 | struct ipv6_pinfo *np = inet6_sk(sk); |
Al Viro | fd68322 | 2006-09-26 22:17:51 -0700 | [diff] [blame] | 249 | __be32 v4addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | unsigned short snum; |
| 251 | int addr_type = 0; |
| 252 | int err = 0; |
| 253 | |
| 254 | /* If the socket has its own bind function then use it. */ |
| 255 | if (sk->sk_prot->bind) |
| 256 | return sk->sk_prot->bind(sk, uaddr, addr_len); |
| 257 | |
| 258 | if (addr_len < SIN6_LEN_RFC2133) |
| 259 | return -EINVAL; |
| 260 | addr_type = ipv6_addr_type(&addr->sin6_addr); |
| 261 | if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) |
| 262 | return -EINVAL; |
| 263 | |
| 264 | snum = ntohs(addr->sin6_port); |
| 265 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
| 266 | return -EACCES; |
| 267 | |
| 268 | lock_sock(sk); |
| 269 | |
| 270 | /* Check these errors (active socket, double bind). */ |
| 271 | if (sk->sk_state != TCP_CLOSE || inet->num) { |
| 272 | err = -EINVAL; |
| 273 | goto out; |
| 274 | } |
| 275 | |
| 276 | /* Check if the address belongs to the host. */ |
| 277 | if (addr_type == IPV6_ADDR_MAPPED) { |
| 278 | v4addr = addr->sin6_addr.s6_addr32[3]; |
| 279 | if (inet_addr_type(v4addr) != RTN_LOCAL) { |
| 280 | err = -EADDRNOTAVAIL; |
| 281 | goto out; |
| 282 | } |
| 283 | } else { |
| 284 | if (addr_type != IPV6_ADDR_ANY) { |
| 285 | struct net_device *dev = NULL; |
| 286 | |
| 287 | if (addr_type & IPV6_ADDR_LINKLOCAL) { |
| 288 | if (addr_len >= sizeof(struct sockaddr_in6) && |
| 289 | addr->sin6_scope_id) { |
| 290 | /* Override any existing binding, if another one |
| 291 | * is supplied by user. |
| 292 | */ |
| 293 | sk->sk_bound_dev_if = addr->sin6_scope_id; |
| 294 | } |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | /* Binding to link-local address requires an interface */ |
| 297 | if (!sk->sk_bound_dev_if) { |
| 298 | err = -EINVAL; |
| 299 | goto out; |
| 300 | } |
| 301 | dev = dev_get_by_index(sk->sk_bound_dev_if); |
| 302 | if (!dev) { |
| 303 | err = -ENODEV; |
| 304 | goto out; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | /* ipv4 addr of the socket is invalid. Only the |
| 309 | * unspecified and mapped address have a v4 equivalent. |
| 310 | */ |
| 311 | v4addr = LOOPBACK4_IPV6; |
| 312 | if (!(addr_type & IPV6_ADDR_MULTICAST)) { |
| 313 | if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) { |
| 314 | if (dev) |
| 315 | dev_put(dev); |
| 316 | err = -EADDRNOTAVAIL; |
| 317 | goto out; |
| 318 | } |
| 319 | } |
| 320 | if (dev) |
| 321 | dev_put(dev); |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | inet->rcv_saddr = v4addr; |
| 326 | inet->saddr = v4addr; |
| 327 | |
| 328 | ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | if (!(addr_type & IPV6_ADDR_MULTICAST)) |
| 331 | ipv6_addr_copy(&np->saddr, &addr->sin6_addr); |
| 332 | |
| 333 | /* Make sure we are allowed to bind here. */ |
| 334 | if (sk->sk_prot->get_port(sk, snum)) { |
| 335 | inet_reset_saddr(sk); |
| 336 | err = -EADDRINUSE; |
| 337 | goto out; |
| 338 | } |
| 339 | |
| 340 | if (addr_type != IPV6_ADDR_ANY) |
| 341 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; |
| 342 | if (snum) |
| 343 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; |
Al Viro | e69a4ad | 2006-11-14 20:56:00 -0800 | [diff] [blame] | 344 | inet->sport = htons(inet->num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | inet->dport = 0; |
| 346 | inet->daddr = 0; |
| 347 | out: |
| 348 | release_sock(sk); |
| 349 | return err; |
| 350 | } |
| 351 | |
| 352 | int inet6_release(struct socket *sock) |
| 353 | { |
| 354 | struct sock *sk = sock->sk; |
| 355 | |
| 356 | if (sk == NULL) |
| 357 | return -EINVAL; |
| 358 | |
| 359 | /* Free mc lists */ |
| 360 | ipv6_sock_mc_close(sk); |
| 361 | |
| 362 | /* Free ac lists */ |
| 363 | ipv6_sock_ac_close(sk); |
| 364 | |
| 365 | return inet_release(sock); |
| 366 | } |
| 367 | |
| 368 | int inet6_destroy_sock(struct sock *sk) |
| 369 | { |
| 370 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 371 | struct sk_buff *skb; |
| 372 | struct ipv6_txoptions *opt; |
| 373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | /* Release rx options */ |
| 375 | |
| 376 | if ((skb = xchg(&np->pktoptions, NULL)) != NULL) |
| 377 | kfree_skb(skb); |
| 378 | |
| 379 | /* Free flowlabels */ |
| 380 | fl6_free_socklist(sk); |
| 381 | |
| 382 | /* Free tx options */ |
| 383 | |
| 384 | if ((opt = xchg(&np->opt, NULL)) != NULL) |
| 385 | sock_kfree_s(sk, opt, opt->tot_len); |
| 386 | |
| 387 | return 0; |
| 388 | } |
| 389 | |
Arnaldo Carvalho de Melo | 3cf3dc6 | 2005-12-13 23:23:20 -0800 | [diff] [blame] | 390 | EXPORT_SYMBOL_GPL(inet6_destroy_sock); |
| 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | /* |
| 393 | * This does both peername and sockname. |
| 394 | */ |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | int inet6_getname(struct socket *sock, struct sockaddr *uaddr, |
| 397 | int *uaddr_len, int peer) |
| 398 | { |
| 399 | struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; |
| 400 | struct sock *sk = sock->sk; |
| 401 | struct inet_sock *inet = inet_sk(sk); |
| 402 | struct ipv6_pinfo *np = inet6_sk(sk); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 403 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | sin->sin6_family = AF_INET6; |
| 405 | sin->sin6_flowinfo = 0; |
| 406 | sin->sin6_scope_id = 0; |
| 407 | if (peer) { |
| 408 | if (!inet->dport) |
| 409 | return -ENOTCONN; |
| 410 | if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && |
| 411 | peer == 1) |
| 412 | return -ENOTCONN; |
| 413 | sin->sin6_port = inet->dport; |
| 414 | ipv6_addr_copy(&sin->sin6_addr, &np->daddr); |
| 415 | if (np->sndflow) |
| 416 | sin->sin6_flowinfo = np->flow_label; |
| 417 | } else { |
| 418 | if (ipv6_addr_any(&np->rcv_saddr)) |
| 419 | ipv6_addr_copy(&sin->sin6_addr, &np->saddr); |
| 420 | else |
| 421 | ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); |
| 422 | |
| 423 | sin->sin6_port = inet->sport; |
| 424 | } |
| 425 | if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) |
| 426 | sin->sin6_scope_id = sk->sk_bound_dev_if; |
| 427 | *uaddr_len = sizeof(*sin); |
| 428 | return(0); |
| 429 | } |
| 430 | |
| 431 | int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 432 | { |
| 433 | struct sock *sk = sock->sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 435 | switch(cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | { |
| 437 | case SIOCGSTAMP: |
| 438 | return sock_get_timestamp(sk, (struct timeval __user *)arg); |
| 439 | |
| 440 | case SIOCADDRT: |
| 441 | case SIOCDELRT: |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | return(ipv6_route_ioctl(cmd,(void __user *)arg)); |
| 444 | |
| 445 | case SIOCSIFADDR: |
| 446 | return addrconf_add_ifaddr((void __user *) arg); |
| 447 | case SIOCDIFADDR: |
| 448 | return addrconf_del_ifaddr((void __user *) arg); |
| 449 | case SIOCSIFDSTADDR: |
| 450 | return addrconf_set_dstaddr((void __user *) arg); |
| 451 | default: |
Christoph Hellwig | b5e5fa5 | 2006-01-03 14:18:33 -0800 | [diff] [blame] | 452 | if (!sk->sk_prot->ioctl) |
| 453 | return -ENOIOCTLCMD; |
| 454 | return sk->sk_prot->ioctl(sk, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } |
| 456 | /*NOTREACHED*/ |
| 457 | return(0); |
| 458 | } |
| 459 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 460 | const struct proto_ops inet6_stream_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 461 | .family = PF_INET6, |
| 462 | .owner = THIS_MODULE, |
| 463 | .release = inet6_release, |
| 464 | .bind = inet6_bind, |
| 465 | .connect = inet_stream_connect, /* ok */ |
| 466 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 467 | .accept = inet_accept, /* ok */ |
| 468 | .getname = inet6_getname, |
| 469 | .poll = tcp_poll, /* ok */ |
| 470 | .ioctl = inet6_ioctl, /* must change */ |
| 471 | .listen = inet_listen, /* ok */ |
| 472 | .shutdown = inet_shutdown, /* ok */ |
| 473 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 474 | .getsockopt = sock_common_getsockopt, /* ok */ |
| 475 | .sendmsg = inet_sendmsg, /* ok */ |
| 476 | .recvmsg = sock_common_recvmsg, /* ok */ |
| 477 | .mmap = sock_no_mmap, |
| 478 | .sendpage = tcp_sendpage, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 479 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 480 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 481 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 482 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | }; |
| 484 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 485 | const struct proto_ops inet6_dgram_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 486 | .family = PF_INET6, |
| 487 | .owner = THIS_MODULE, |
| 488 | .release = inet6_release, |
| 489 | .bind = inet6_bind, |
| 490 | .connect = inet_dgram_connect, /* ok */ |
| 491 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 492 | .accept = sock_no_accept, /* a do nothing */ |
| 493 | .getname = inet6_getname, |
| 494 | .poll = udp_poll, /* ok */ |
| 495 | .ioctl = inet6_ioctl, /* must change */ |
| 496 | .listen = sock_no_listen, /* ok */ |
| 497 | .shutdown = inet_shutdown, /* ok */ |
| 498 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 499 | .getsockopt = sock_common_getsockopt, /* ok */ |
| 500 | .sendmsg = inet_sendmsg, /* ok */ |
| 501 | .recvmsg = sock_common_recvmsg, /* ok */ |
| 502 | .mmap = sock_no_mmap, |
| 503 | .sendpage = sock_no_sendpage, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 504 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 505 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 506 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 507 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | }; |
| 509 | |
| 510 | static struct net_proto_family inet6_family_ops = { |
| 511 | .family = PF_INET6, |
| 512 | .create = inet6_create, |
| 513 | .owner = THIS_MODULE, |
| 514 | }; |
| 515 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | /* Same as inet6_dgram_ops, sans udp_poll. */ |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 517 | static const struct proto_ops inet6_sockraw_ops = { |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 518 | .family = PF_INET6, |
| 519 | .owner = THIS_MODULE, |
| 520 | .release = inet6_release, |
| 521 | .bind = inet6_bind, |
| 522 | .connect = inet_dgram_connect, /* ok */ |
| 523 | .socketpair = sock_no_socketpair, /* a do nothing */ |
| 524 | .accept = sock_no_accept, /* a do nothing */ |
| 525 | .getname = inet6_getname, |
| 526 | .poll = datagram_poll, /* ok */ |
| 527 | .ioctl = inet6_ioctl, /* must change */ |
| 528 | .listen = sock_no_listen, /* ok */ |
| 529 | .shutdown = inet_shutdown, /* ok */ |
| 530 | .setsockopt = sock_common_setsockopt, /* ok */ |
| 531 | .getsockopt = sock_common_getsockopt, /* ok */ |
| 532 | .sendmsg = inet_sendmsg, /* ok */ |
| 533 | .recvmsg = sock_common_recvmsg, /* ok */ |
| 534 | .mmap = sock_no_mmap, |
| 535 | .sendpage = sock_no_sendpage, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 536 | #ifdef CONFIG_COMPAT |
Arnaldo Carvalho de Melo | 543d9cf | 2006-03-20 22:48:35 -0800 | [diff] [blame] | 537 | .compat_setsockopt = compat_sock_common_setsockopt, |
| 538 | .compat_getsockopt = compat_sock_common_getsockopt, |
Dmitry Mishin | 3fdadf7 | 2006-03-20 22:45:21 -0800 | [diff] [blame] | 539 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | }; |
| 541 | |
| 542 | static struct inet_protosw rawv6_protosw = { |
| 543 | .type = SOCK_RAW, |
| 544 | .protocol = IPPROTO_IP, /* wild card */ |
| 545 | .prot = &rawv6_prot, |
| 546 | .ops = &inet6_sockraw_ops, |
| 547 | .capability = CAP_NET_RAW, |
| 548 | .no_check = UDP_CSUM_DEFAULT, |
| 549 | .flags = INET_PROTOSW_REUSE, |
| 550 | }; |
| 551 | |
| 552 | void |
| 553 | inet6_register_protosw(struct inet_protosw *p) |
| 554 | { |
| 555 | struct list_head *lh; |
| 556 | struct inet_protosw *answer; |
| 557 | int protocol = p->protocol; |
| 558 | struct list_head *last_perm; |
| 559 | |
| 560 | spin_lock_bh(&inetsw6_lock); |
| 561 | |
| 562 | if (p->type >= SOCK_MAX) |
| 563 | goto out_illegal; |
| 564 | |
| 565 | /* If we are trying to override a permanent protocol, bail. */ |
| 566 | answer = NULL; |
| 567 | last_perm = &inetsw6[p->type]; |
| 568 | list_for_each(lh, &inetsw6[p->type]) { |
| 569 | answer = list_entry(lh, struct inet_protosw, list); |
| 570 | |
| 571 | /* Check only the non-wild match. */ |
| 572 | if (INET_PROTOSW_PERMANENT & answer->flags) { |
| 573 | if (protocol == answer->protocol) |
| 574 | break; |
| 575 | last_perm = lh; |
| 576 | } |
| 577 | |
| 578 | answer = NULL; |
| 579 | } |
| 580 | if (answer) |
| 581 | goto out_permanent; |
| 582 | |
| 583 | /* Add the new entry after the last permanent entry if any, so that |
| 584 | * the new entry does not override a permanent entry when matched with |
| 585 | * a wild-card protocol. But it is allowed to override any existing |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 586 | * non-permanent entry. This means that when we remove this entry, the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | * system automatically returns to the old behavior. |
| 588 | */ |
| 589 | list_add_rcu(&p->list, last_perm); |
| 590 | out: |
| 591 | spin_unlock_bh(&inetsw6_lock); |
| 592 | return; |
| 593 | |
| 594 | out_permanent: |
| 595 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", |
| 596 | protocol); |
| 597 | goto out; |
| 598 | |
| 599 | out_illegal: |
| 600 | printk(KERN_ERR |
| 601 | "Ignoring attempt to register invalid socket type %d.\n", |
| 602 | p->type); |
| 603 | goto out; |
| 604 | } |
| 605 | |
| 606 | void |
| 607 | inet6_unregister_protosw(struct inet_protosw *p) |
| 608 | { |
| 609 | if (INET_PROTOSW_PERMANENT & p->flags) { |
| 610 | printk(KERN_ERR |
| 611 | "Attempt to unregister permanent protocol %d.\n", |
| 612 | p->protocol); |
| 613 | } else { |
| 614 | spin_lock_bh(&inetsw6_lock); |
| 615 | list_del_rcu(&p->list); |
| 616 | spin_unlock_bh(&inetsw6_lock); |
| 617 | |
| 618 | synchronize_net(); |
| 619 | } |
| 620 | } |
| 621 | |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 622 | int inet6_sk_rebuild_header(struct sock *sk) |
| 623 | { |
| 624 | int err; |
| 625 | struct dst_entry *dst; |
| 626 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 627 | |
| 628 | dst = __sk_dst_check(sk, np->dst_cookie); |
| 629 | |
| 630 | if (dst == NULL) { |
| 631 | struct inet_sock *inet = inet_sk(sk); |
| 632 | struct in6_addr *final_p = NULL, final; |
| 633 | struct flowi fl; |
| 634 | |
| 635 | memset(&fl, 0, sizeof(fl)); |
| 636 | fl.proto = sk->sk_protocol; |
| 637 | ipv6_addr_copy(&fl.fl6_dst, &np->daddr); |
| 638 | ipv6_addr_copy(&fl.fl6_src, &np->saddr); |
| 639 | fl.fl6_flowlabel = np->flow_label; |
| 640 | fl.oif = sk->sk_bound_dev_if; |
| 641 | fl.fl_ip_dport = inet->dport; |
| 642 | fl.fl_ip_sport = inet->sport; |
Venkat Yekkirala | beb8d13 | 2006-08-04 23:12:42 -0700 | [diff] [blame] | 643 | security_sk_classify_flow(sk, &fl); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 644 | |
| 645 | if (np->opt && np->opt->srcrt) { |
| 646 | struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; |
| 647 | ipv6_addr_copy(&final, &fl.fl6_dst); |
| 648 | ipv6_addr_copy(&fl.fl6_dst, rt0->addr); |
| 649 | final_p = &final; |
| 650 | } |
| 651 | |
| 652 | err = ip6_dst_lookup(sk, &dst, &fl); |
| 653 | if (err) { |
| 654 | sk->sk_route_caps = 0; |
| 655 | return err; |
| 656 | } |
| 657 | if (final_p) |
| 658 | ipv6_addr_copy(&fl.fl6_dst, final_p); |
| 659 | |
| 660 | if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) { |
| 661 | sk->sk_err_soft = -err; |
| 662 | return err; |
| 663 | } |
| 664 | |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 665 | __ip6_dst_store(sk, dst, NULL, NULL); |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | return 0; |
| 669 | } |
| 670 | |
| 671 | EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); |
| 672 | |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 673 | int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) |
| 674 | { |
| 675 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 676 | struct inet6_skb_parm *opt = IP6CB(skb); |
| 677 | |
| 678 | if (np->rxopt.all) { |
| 679 | if ((opt->hop && (np->rxopt.bits.hopopts || |
| 680 | np->rxopt.bits.ohopopts)) || |
Al Viro | 90bcaf7 | 2006-11-08 00:25:17 -0800 | [diff] [blame] | 681 | ((IPV6_FLOWINFO_MASK & *(__be32*)skb->nh.raw) && |
Arnaldo Carvalho de Melo | 399c07d | 2005-12-13 23:24:28 -0800 | [diff] [blame] | 682 | np->rxopt.bits.rxflow) || |
| 683 | (opt->srcrt && (np->rxopt.bits.srcrt || |
| 684 | np->rxopt.bits.osrcrt)) || |
| 685 | ((opt->dst1 || opt->dst0) && |
| 686 | (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) |
| 687 | return 1; |
| 688 | } |
| 689 | return 0; |
| 690 | } |
| 691 | |
| 692 | EXPORT_SYMBOL_GPL(ipv6_opt_accepted); |
| 693 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | int |
| 695 | snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign) |
| 696 | { |
| 697 | if (ptr == NULL) |
| 698 | return -EINVAL; |
| 699 | |
Pekka Enberg | f9f7500 | 2006-01-08 01:00:33 -0800 | [diff] [blame] | 700 | ptr[0] = __alloc_percpu(mibsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | if (!ptr[0]) |
| 702 | goto err0; |
| 703 | |
Pekka Enberg | f9f7500 | 2006-01-08 01:00:33 -0800 | [diff] [blame] | 704 | ptr[1] = __alloc_percpu(mibsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | if (!ptr[1]) |
| 706 | goto err1; |
| 707 | |
| 708 | return 0; |
| 709 | |
| 710 | err1: |
| 711 | free_percpu(ptr[0]); |
| 712 | ptr[0] = NULL; |
| 713 | err0: |
| 714 | return -ENOMEM; |
| 715 | } |
| 716 | |
| 717 | void |
| 718 | snmp6_mib_free(void *ptr[2]) |
| 719 | { |
| 720 | if (ptr == NULL) |
| 721 | return; |
Alan Stern | a120586 | 2006-12-06 20:32:37 -0800 | [diff] [blame] | 722 | free_percpu(ptr[0]); |
| 723 | free_percpu(ptr[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | ptr[0] = ptr[1] = NULL; |
| 725 | } |
| 726 | |
| 727 | static int __init init_ipv6_mibs(void) |
| 728 | { |
| 729 | if (snmp6_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib), |
| 730 | __alignof__(struct ipstats_mib)) < 0) |
| 731 | goto err_ip_mib; |
| 732 | if (snmp6_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib), |
| 733 | __alignof__(struct icmpv6_mib)) < 0) |
| 734 | goto err_icmp_mib; |
| 735 | if (snmp6_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib), |
| 736 | __alignof__(struct udp_mib)) < 0) |
| 737 | goto err_udp_mib; |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 738 | if (snmp6_mib_init((void **)udplite_stats_in6, sizeof (struct udp_mib), |
| 739 | __alignof__(struct udp_mib)) < 0) |
| 740 | goto err_udplite_mib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | return 0; |
| 742 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 743 | err_udplite_mib: |
| 744 | snmp6_mib_free((void **)udp_stats_in6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | err_udp_mib: |
| 746 | snmp6_mib_free((void **)icmpv6_statistics); |
| 747 | err_icmp_mib: |
| 748 | snmp6_mib_free((void **)ipv6_statistics); |
| 749 | err_ip_mib: |
| 750 | return -ENOMEM; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | |
| 754 | static void cleanup_ipv6_mibs(void) |
| 755 | { |
| 756 | snmp6_mib_free((void **)ipv6_statistics); |
| 757 | snmp6_mib_free((void **)icmpv6_statistics); |
| 758 | snmp6_mib_free((void **)udp_stats_in6); |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 759 | snmp6_mib_free((void **)udplite_stats_in6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | static int __init inet6_init(void) |
| 763 | { |
| 764 | struct sk_buff *dummy_skb; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 765 | struct list_head *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | int err; |
| 767 | |
YOSHIFUJI Hideaki | ef047f5 | 2006-09-01 00:29:06 -0700 | [diff] [blame] | 768 | BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); |
| 769 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | #ifdef MODULE |
| 771 | #if 0 /* FIXME --RR */ |
| 772 | if (!mod_member_present(&__this_module, can_unload)) |
| 773 | return -EINVAL; |
| 774 | |
| 775 | __this_module.can_unload = &ipv6_unload; |
| 776 | #endif |
| 777 | #endif |
| 778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | err = proto_register(&tcpv6_prot, 1); |
| 780 | if (err) |
| 781 | goto out; |
| 782 | |
| 783 | err = proto_register(&udpv6_prot, 1); |
| 784 | if (err) |
| 785 | goto out_unregister_tcp_proto; |
| 786 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 787 | err = proto_register(&udplitev6_prot, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | if (err) |
| 789 | goto out_unregister_udp_proto; |
| 790 | |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 791 | err = proto_register(&rawv6_prot, 1); |
| 792 | if (err) |
| 793 | goto out_unregister_udplite_proto; |
| 794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
| 796 | /* Register the socket-side information for inet6_create. */ |
| 797 | for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) |
| 798 | INIT_LIST_HEAD(r); |
| 799 | |
| 800 | /* We MUST register RAW sockets before we create the ICMP6, |
| 801 | * IGMP6, or NDISC control sockets. |
| 802 | */ |
| 803 | inet6_register_protosw(&rawv6_protosw); |
| 804 | |
| 805 | /* Register the family here so that the init calls below will |
| 806 | * be able to create sockets. (?? is this dangerous ??) |
| 807 | */ |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 808 | err = sock_register(&inet6_family_ops); |
| 809 | if (err) |
| 810 | goto out_unregister_raw_proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | |
| 812 | /* Initialise ipv6 mibs */ |
| 813 | err = init_ipv6_mibs(); |
| 814 | if (err) |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 815 | goto out_unregister_sock; |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 816 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | /* |
| 818 | * ipngwg API draft makes clear that the correct semantics |
| 819 | * for TCP and UDP is to consider one TCP and UDP instance |
| 820 | * in a host availiable by both INET and INET6 APIs and |
| 821 | * able to communicate via both network protocols. |
| 822 | */ |
| 823 | |
| 824 | #ifdef CONFIG_SYSCTL |
| 825 | ipv6_sysctl_register(); |
| 826 | #endif |
| 827 | err = icmpv6_init(&inet6_family_ops); |
| 828 | if (err) |
| 829 | goto icmp_fail; |
| 830 | err = ndisc_init(&inet6_family_ops); |
| 831 | if (err) |
| 832 | goto ndisc_fail; |
| 833 | err = igmp6_init(&inet6_family_ops); |
| 834 | if (err) |
| 835 | goto igmp_fail; |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 836 | err = ipv6_netfilter_init(); |
| 837 | if (err) |
| 838 | goto netfilter_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | /* Create /proc/foo6 entries. */ |
| 840 | #ifdef CONFIG_PROC_FS |
| 841 | err = -ENOMEM; |
| 842 | if (raw6_proc_init()) |
| 843 | goto proc_raw6_fail; |
| 844 | if (tcp6_proc_init()) |
| 845 | goto proc_tcp6_fail; |
| 846 | if (udp6_proc_init()) |
| 847 | goto proc_udp6_fail; |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 848 | if (udplite6_proc_init()) |
| 849 | goto proc_udplite6_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | if (ipv6_misc_proc_init()) |
| 851 | goto proc_misc6_fail; |
| 852 | |
| 853 | if (ac6_proc_init()) |
| 854 | goto proc_anycast6_fail; |
| 855 | if (if6_proc_init()) |
| 856 | goto proc_if6_fail; |
| 857 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | ip6_route_init(); |
| 859 | ip6_flowlabel_init(); |
| 860 | err = addrconf_init(); |
| 861 | if (err) |
| 862 | goto addrconf_fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
| 864 | /* Init v6 extension headers. */ |
| 865 | ipv6_rthdr_init(); |
| 866 | ipv6_frag_init(); |
| 867 | ipv6_nodata_init(); |
| 868 | ipv6_destopt_init(); |
Noriaki TAKAMIYA | 2c8d7ca | 2006-08-23 20:31:11 -0700 | [diff] [blame] | 869 | #ifdef CONFIG_IPV6_MIP6 |
| 870 | mip6_init(); |
| 871 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
| 873 | /* Init v6 transport protocols. */ |
| 874 | udpv6_init(); |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 875 | udplitev6_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | tcpv6_init(); |
Herbert Xu | e2ed405 | 2005-07-05 14:41:20 -0700 | [diff] [blame] | 877 | |
| 878 | ipv6_packet_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | err = 0; |
| 880 | out: |
| 881 | return err; |
| 882 | |
| 883 | addrconf_fail: |
| 884 | ip6_flowlabel_cleanup(); |
| 885 | ip6_route_cleanup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | #ifdef CONFIG_PROC_FS |
| 887 | if6_proc_exit(); |
| 888 | proc_if6_fail: |
| 889 | ac6_proc_exit(); |
| 890 | proc_anycast6_fail: |
| 891 | ipv6_misc_proc_exit(); |
| 892 | proc_misc6_fail: |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 893 | udplite6_proc_exit(); |
| 894 | proc_udplite6_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | udp6_proc_exit(); |
| 896 | proc_udp6_fail: |
| 897 | tcp6_proc_exit(); |
| 898 | proc_tcp6_fail: |
| 899 | raw6_proc_exit(); |
| 900 | proc_raw6_fail: |
| 901 | #endif |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 902 | ipv6_netfilter_fini(); |
| 903 | netfilter_fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | igmp6_cleanup(); |
| 905 | igmp_fail: |
| 906 | ndisc_cleanup(); |
| 907 | ndisc_fail: |
| 908 | icmpv6_cleanup(); |
| 909 | icmp_fail: |
| 910 | #ifdef CONFIG_SYSCTL |
| 911 | ipv6_sysctl_unregister(); |
| 912 | #endif |
| 913 | cleanup_ipv6_mibs(); |
David S. Miller | 8eb5591 | 2005-11-11 15:05:47 -0800 | [diff] [blame] | 914 | out_unregister_sock: |
| 915 | sock_unregister(PF_INET6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | out_unregister_raw_proto: |
| 917 | proto_unregister(&rawv6_prot); |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 918 | out_unregister_udplite_proto: |
| 919 | proto_unregister(&udplitev6_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | out_unregister_udp_proto: |
| 921 | proto_unregister(&udpv6_prot); |
| 922 | out_unregister_tcp_proto: |
| 923 | proto_unregister(&tcpv6_prot); |
| 924 | goto out; |
| 925 | } |
| 926 | module_init(inet6_init); |
| 927 | |
| 928 | static void __exit inet6_exit(void) |
| 929 | { |
| 930 | /* First of all disallow new sockets creation. */ |
| 931 | sock_unregister(PF_INET6); |
| 932 | #ifdef CONFIG_PROC_FS |
| 933 | if6_proc_exit(); |
| 934 | ac6_proc_exit(); |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 935 | ipv6_misc_proc_exit(); |
| 936 | udp6_proc_exit(); |
| 937 | udplite6_proc_exit(); |
| 938 | tcp6_proc_exit(); |
| 939 | raw6_proc_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | #endif |
Noriaki TAKAMIYA | 2c8d7ca | 2006-08-23 20:31:11 -0700 | [diff] [blame] | 941 | #ifdef CONFIG_IPV6_MIP6 |
| 942 | mip6_fini(); |
| 943 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | /* Cleanup code parts. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | ip6_flowlabel_cleanup(); |
| 946 | addrconf_cleanup(); |
| 947 | ip6_route_cleanup(); |
| 948 | ipv6_packet_cleanup(); |
| 949 | igmp6_cleanup(); |
Harald Welte | 2cc7d57 | 2005-08-09 19:42:34 -0700 | [diff] [blame] | 950 | ipv6_netfilter_fini(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | ndisc_cleanup(); |
| 952 | icmpv6_cleanup(); |
| 953 | #ifdef CONFIG_SYSCTL |
YOSHIFUJI Hideaki | 1ab1457 | 2007-02-09 23:24:49 +0900 | [diff] [blame] | 954 | ipv6_sysctl_unregister(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | #endif |
| 956 | cleanup_ipv6_mibs(); |
| 957 | proto_unregister(&rawv6_prot); |
| 958 | proto_unregister(&udpv6_prot); |
| 959 | proto_unregister(&tcpv6_prot); |
| 960 | } |
| 961 | module_exit(inet6_exit); |
| 962 | |
| 963 | MODULE_ALIAS_NETPROTO(PF_INET6); |