| 1 |
3 |
xianfeng |
/*
|
| 2 |
|
|
* PF_INET6 socket protocol family
|
| 3 |
|
|
* Linux INET6 implementation
|
| 4 |
|
|
*
|
| 5 |
|
|
* Authors:
|
| 6 |
|
|
* Pedro Roque <roque@di.fc.ul.pt>
|
| 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>
|
| 25 |
|
|
#include <linux/capability.h>
|
| 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>
|
| 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/netfilter_ipv6.h>
|
| 46 |
|
|
|
| 47 |
|
|
#include <net/ip.h>
|
| 48 |
|
|
#include <net/ipv6.h>
|
| 49 |
|
|
#include <net/udp.h>
|
| 50 |
|
|
#include <net/udplite.h>
|
| 51 |
|
|
#include <net/tcp.h>
|
| 52 |
|
|
#include <net/ipip.h>
|
| 53 |
|
|
#include <net/protocol.h>
|
| 54 |
|
|
#include <net/inet_common.h>
|
| 55 |
|
|
#include <net/transp_v6.h>
|
| 56 |
|
|
#include <net/ip6_route.h>
|
| 57 |
|
|
#include <net/addrconf.h>
|
| 58 |
|
|
#ifdef CONFIG_IPV6_TUNNEL
|
| 59 |
|
|
#include <net/ip6_tunnel.h>
|
| 60 |
|
|
#endif
|
| 61 |
|
|
|
| 62 |
|
|
#include <asm/uaccess.h>
|
| 63 |
|
|
#include <asm/system.h>
|
| 64 |
|
|
|
| 65 |
|
|
MODULE_AUTHOR("Cast of dozens");
|
| 66 |
|
|
MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
|
| 67 |
|
|
MODULE_LICENSE("GPL");
|
| 68 |
|
|
|
| 69 |
|
|
int sysctl_ipv6_bindv6only __read_mostly;
|
| 70 |
|
|
|
| 71 |
|
|
/* The inetsw table contains everything that inet_create needs to
|
| 72 |
|
|
* build a new socket.
|
| 73 |
|
|
*/
|
| 74 |
|
|
static struct list_head inetsw6[SOCK_MAX];
|
| 75 |
|
|
static DEFINE_SPINLOCK(inetsw6_lock);
|
| 76 |
|
|
|
| 77 |
|
|
static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
|
| 78 |
|
|
{
|
| 79 |
|
|
const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
|
| 80 |
|
|
|
| 81 |
|
|
return (struct ipv6_pinfo *)(((u8 *)sk) + offset);
|
| 82 |
|
|
}
|
| 83 |
|
|
|
| 84 |
|
|
static int inet6_create(struct net *net, struct socket *sock, int protocol)
|
| 85 |
|
|
{
|
| 86 |
|
|
struct inet_sock *inet;
|
| 87 |
|
|
struct ipv6_pinfo *np;
|
| 88 |
|
|
struct sock *sk;
|
| 89 |
|
|
struct list_head *p;
|
| 90 |
|
|
struct inet_protosw *answer;
|
| 91 |
|
|
struct proto *answer_prot;
|
| 92 |
|
|
unsigned char answer_flags;
|
| 93 |
|
|
char answer_no_check;
|
| 94 |
|
|
int try_loading_module = 0;
|
| 95 |
|
|
int err;
|
| 96 |
|
|
|
| 97 |
|
|
if (net != &init_net)
|
| 98 |
|
|
return -EAFNOSUPPORT;
|
| 99 |
|
|
|
| 100 |
|
|
if (sock->type != SOCK_RAW &&
|
| 101 |
|
|
sock->type != SOCK_DGRAM &&
|
| 102 |
|
|
!inet_ehash_secret)
|
| 103 |
|
|
build_ehash_secret();
|
| 104 |
|
|
|
| 105 |
|
|
/* Look for the requested type/protocol pair. */
|
| 106 |
|
|
answer = NULL;
|
| 107 |
|
|
lookup_protocol:
|
| 108 |
|
|
err = -ESOCKTNOSUPPORT;
|
| 109 |
|
|
rcu_read_lock();
|
| 110 |
|
|
list_for_each_rcu(p, &inetsw6[sock->type]) {
|
| 111 |
|
|
answer = list_entry(p, struct inet_protosw, list);
|
| 112 |
|
|
|
| 113 |
|
|
/* Check the non-wild match. */
|
| 114 |
|
|
if (protocol == answer->protocol) {
|
| 115 |
|
|
if (protocol != IPPROTO_IP)
|
| 116 |
|
|
break;
|
| 117 |
|
|
} else {
|
| 118 |
|
|
/* Check for the two wild cases. */
|
| 119 |
|
|
if (IPPROTO_IP == protocol) {
|
| 120 |
|
|
protocol = answer->protocol;
|
| 121 |
|
|
break;
|
| 122 |
|
|
}
|
| 123 |
|
|
if (IPPROTO_IP == answer->protocol)
|
| 124 |
|
|
break;
|
| 125 |
|
|
}
|
| 126 |
|
|
err = -EPROTONOSUPPORT;
|
| 127 |
|
|
answer = NULL;
|
| 128 |
|
|
}
|
| 129 |
|
|
|
| 130 |
|
|
if (!answer) {
|
| 131 |
|
|
if (try_loading_module < 2) {
|
| 132 |
|
|
rcu_read_unlock();
|
| 133 |
|
|
/*
|
| 134 |
|
|
* Be more specific, e.g. net-pf-10-proto-132-type-1
|
| 135 |
|
|
* (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
|
| 136 |
|
|
*/
|
| 137 |
|
|
if (++try_loading_module == 1)
|
| 138 |
|
|
request_module("net-pf-%d-proto-%d-type-%d",
|
| 139 |
|
|
PF_INET6, protocol, sock->type);
|
| 140 |
|
|
/*
|
| 141 |
|
|
* Fall back to generic, e.g. net-pf-10-proto-132
|
| 142 |
|
|
* (net-pf-PF_INET6-proto-IPPROTO_SCTP)
|
| 143 |
|
|
*/
|
| 144 |
|
|
else
|
| 145 |
|
|
request_module("net-pf-%d-proto-%d",
|
| 146 |
|
|
PF_INET6, protocol);
|
| 147 |
|
|
goto lookup_protocol;
|
| 148 |
|
|
} else
|
| 149 |
|
|
goto out_rcu_unlock;
|
| 150 |
|
|
}
|
| 151 |
|
|
|
| 152 |
|
|
err = -EPERM;
|
| 153 |
|
|
if (answer->capability > 0 && !capable(answer->capability))
|
| 154 |
|
|
goto out_rcu_unlock;
|
| 155 |
|
|
|
| 156 |
|
|
sock->ops = answer->ops;
|
| 157 |
|
|
answer_prot = answer->prot;
|
| 158 |
|
|
answer_no_check = answer->no_check;
|
| 159 |
|
|
answer_flags = answer->flags;
|
| 160 |
|
|
rcu_read_unlock();
|
| 161 |
|
|
|
| 162 |
|
|
BUG_TRAP(answer_prot->slab != NULL);
|
| 163 |
|
|
|
| 164 |
|
|
err = -ENOBUFS;
|
| 165 |
|
|
sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot);
|
| 166 |
|
|
if (sk == NULL)
|
| 167 |
|
|
goto out;
|
| 168 |
|
|
|
| 169 |
|
|
sock_init_data(sock, sk);
|
| 170 |
|
|
|
| 171 |
|
|
err = 0;
|
| 172 |
|
|
sk->sk_no_check = answer_no_check;
|
| 173 |
|
|
if (INET_PROTOSW_REUSE & answer_flags)
|
| 174 |
|
|
sk->sk_reuse = 1;
|
| 175 |
|
|
|
| 176 |
|
|
inet = inet_sk(sk);
|
| 177 |
|
|
inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
|
| 178 |
|
|
|
| 179 |
|
|
if (SOCK_RAW == sock->type) {
|
| 180 |
|
|
inet->num = protocol;
|
| 181 |
|
|
if (IPPROTO_RAW == protocol)
|
| 182 |
|
|
inet->hdrincl = 1;
|
| 183 |
|
|
}
|
| 184 |
|
|
|
| 185 |
|
|
sk->sk_destruct = inet_sock_destruct;
|
| 186 |
|
|
sk->sk_family = PF_INET6;
|
| 187 |
|
|
sk->sk_protocol = protocol;
|
| 188 |
|
|
|
| 189 |
|
|
sk->sk_backlog_rcv = answer->prot->backlog_rcv;
|
| 190 |
|
|
|
| 191 |
|
|
inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk);
|
| 192 |
|
|
np->hop_limit = -1;
|
| 193 |
|
|
np->mcast_hops = -1;
|
| 194 |
|
|
np->mc_loop = 1;
|
| 195 |
|
|
np->pmtudisc = IPV6_PMTUDISC_WANT;
|
| 196 |
|
|
np->ipv6only = sysctl_ipv6_bindv6only;
|
| 197 |
|
|
|
| 198 |
|
|
/* Init the ipv4 part of the socket since we can have sockets
|
| 199 |
|
|
* using v6 API for ipv4.
|
| 200 |
|
|
*/
|
| 201 |
|
|
inet->uc_ttl = -1;
|
| 202 |
|
|
|
| 203 |
|
|
inet->mc_loop = 1;
|
| 204 |
|
|
inet->mc_ttl = 1;
|
| 205 |
|
|
inet->mc_index = 0;
|
| 206 |
|
|
inet->mc_list = NULL;
|
| 207 |
|
|
|
| 208 |
|
|
if (ipv4_config.no_pmtu_disc)
|
| 209 |
|
|
inet->pmtudisc = IP_PMTUDISC_DONT;
|
| 210 |
|
|
else
|
| 211 |
|
|
inet->pmtudisc = IP_PMTUDISC_WANT;
|
| 212 |
|
|
/*
|
| 213 |
|
|
* Increment only the relevant sk_prot->socks debug field, this changes
|
| 214 |
|
|
* the previous behaviour of incrementing both the equivalent to
|
| 215 |
|
|
* answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
|
| 216 |
|
|
*
|
| 217 |
|
|
* This allows better debug granularity as we'll know exactly how many
|
| 218 |
|
|
* UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
|
| 219 |
|
|
* transport protocol socks. -acme
|
| 220 |
|
|
*/
|
| 221 |
|
|
sk_refcnt_debug_inc(sk);
|
| 222 |
|
|
|
| 223 |
|
|
if (inet->num) {
|
| 224 |
|
|
/* It assumes that any protocol which allows
|
| 225 |
|
|
* the user to assign a number at socket
|
| 226 |
|
|
* creation time automatically shares.
|
| 227 |
|
|
*/
|
| 228 |
|
|
inet->sport = htons(inet->num);
|
| 229 |
|
|
sk->sk_prot->hash(sk);
|
| 230 |
|
|
}
|
| 231 |
|
|
if (sk->sk_prot->init) {
|
| 232 |
|
|
err = sk->sk_prot->init(sk);
|
| 233 |
|
|
if (err) {
|
| 234 |
|
|
sk_common_release(sk);
|
| 235 |
|
|
goto out;
|
| 236 |
|
|
}
|
| 237 |
|
|
}
|
| 238 |
|
|
out:
|
| 239 |
|
|
return err;
|
| 240 |
|
|
out_rcu_unlock:
|
| 241 |
|
|
rcu_read_unlock();
|
| 242 |
|
|
goto out;
|
| 243 |
|
|
}
|
| 244 |
|
|
|
| 245 |
|
|
|
| 246 |
|
|
/* bind for INET6 API */
|
| 247 |
|
|
int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
| 248 |
|
|
{
|
| 249 |
|
|
struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr;
|
| 250 |
|
|
struct sock *sk = sock->sk;
|
| 251 |
|
|
struct inet_sock *inet = inet_sk(sk);
|
| 252 |
|
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
| 253 |
|
|
__be32 v4addr = 0;
|
| 254 |
|
|
unsigned short snum;
|
| 255 |
|
|
int addr_type = 0;
|
| 256 |
|
|
int err = 0;
|
| 257 |
|
|
|
| 258 |
|
|
/* If the socket has its own bind function then use it. */
|
| 259 |
|
|
if (sk->sk_prot->bind)
|
| 260 |
|
|
return sk->sk_prot->bind(sk, uaddr, addr_len);
|
| 261 |
|
|
|
| 262 |
|
|
if (addr_len < SIN6_LEN_RFC2133)
|
| 263 |
|
|
return -EINVAL;
|
| 264 |
|
|
addr_type = ipv6_addr_type(&addr->sin6_addr);
|
| 265 |
|
|
if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
|
| 266 |
|
|
return -EINVAL;
|
| 267 |
|
|
|
| 268 |
|
|
snum = ntohs(addr->sin6_port);
|
| 269 |
|
|
if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
|
| 270 |
|
|
return -EACCES;
|
| 271 |
|
|
|
| 272 |
|
|
lock_sock(sk);
|
| 273 |
|
|
|
| 274 |
|
|
/* Check these errors (active socket, double bind). */
|
| 275 |
|
|
if (sk->sk_state != TCP_CLOSE || inet->num) {
|
| 276 |
|
|
err = -EINVAL;
|
| 277 |
|
|
goto out;
|
| 278 |
|
|
}
|
| 279 |
|
|
|
| 280 |
|
|
/* Check if the address belongs to the host. */
|
| 281 |
|
|
if (addr_type == IPV6_ADDR_MAPPED) {
|
| 282 |
|
|
v4addr = addr->sin6_addr.s6_addr32[3];
|
| 283 |
|
|
if (inet_addr_type(v4addr) != RTN_LOCAL) {
|
| 284 |
|
|
err = -EADDRNOTAVAIL;
|
| 285 |
|
|
goto out;
|
| 286 |
|
|
}
|
| 287 |
|
|
} else {
|
| 288 |
|
|
if (addr_type != IPV6_ADDR_ANY) {
|
| 289 |
|
|
struct net_device *dev = NULL;
|
| 290 |
|
|
|
| 291 |
|
|
if (addr_type & IPV6_ADDR_LINKLOCAL) {
|
| 292 |
|
|
if (addr_len >= sizeof(struct sockaddr_in6) &&
|
| 293 |
|
|
addr->sin6_scope_id) {
|
| 294 |
|
|
/* Override any existing binding, if another one
|
| 295 |
|
|
* is supplied by user.
|
| 296 |
|
|
*/
|
| 297 |
|
|
sk->sk_bound_dev_if = addr->sin6_scope_id;
|
| 298 |
|
|
}
|
| 299 |
|
|
|
| 300 |
|
|
/* Binding to link-local address requires an interface */
|
| 301 |
|
|
if (!sk->sk_bound_dev_if) {
|
| 302 |
|
|
err = -EINVAL;
|
| 303 |
|
|
goto out;
|
| 304 |
|
|
}
|
| 305 |
|
|
dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
|
| 306 |
|
|
if (!dev) {
|
| 307 |
|
|
err = -ENODEV;
|
| 308 |
|
|
goto out;
|
| 309 |
|
|
}
|
| 310 |
|
|
}
|
| 311 |
|
|
|
| 312 |
|
|
/* ipv4 addr of the socket is invalid. Only the
|
| 313 |
|
|
* unspecified and mapped address have a v4 equivalent.
|
| 314 |
|
|
*/
|
| 315 |
|
|
v4addr = LOOPBACK4_IPV6;
|
| 316 |
|
|
if (!(addr_type & IPV6_ADDR_MULTICAST)) {
|
| 317 |
|
|
if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
|
| 318 |
|
|
if (dev)
|
| 319 |
|
|
dev_put(dev);
|
| 320 |
|
|
err = -EADDRNOTAVAIL;
|
| 321 |
|
|
goto out;
|
| 322 |
|
|
}
|
| 323 |
|
|
}
|
| 324 |
|
|
if (dev)
|
| 325 |
|
|
dev_put(dev);
|
| 326 |
|
|
}
|
| 327 |
|
|
}
|
| 328 |
|
|
|
| 329 |
|
|
inet->rcv_saddr = v4addr;
|
| 330 |
|
|
inet->saddr = v4addr;
|
| 331 |
|
|
|
| 332 |
|
|
ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
|
| 333 |
|
|
|
| 334 |
|
|
if (!(addr_type & IPV6_ADDR_MULTICAST))
|
| 335 |
|
|
ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
|
| 336 |
|
|
|
| 337 |
|
|
/* Make sure we are allowed to bind here. */
|
| 338 |
|
|
if (sk->sk_prot->get_port(sk, snum)) {
|
| 339 |
|
|
inet_reset_saddr(sk);
|
| 340 |
|
|
err = -EADDRINUSE;
|
| 341 |
|
|
goto out;
|
| 342 |
|
|
}
|
| 343 |
|
|
|
| 344 |
|
|
if (addr_type != IPV6_ADDR_ANY)
|
| 345 |
|
|
sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
|
| 346 |
|
|
if (snum)
|
| 347 |
|
|
sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
|
| 348 |
|
|
inet->sport = htons(inet->num);
|
| 349 |
|
|
inet->dport = 0;
|
| 350 |
|
|
inet->daddr = 0;
|
| 351 |
|
|
out:
|
| 352 |
|
|
release_sock(sk);
|
| 353 |
|
|
return err;
|
| 354 |
|
|
}
|
| 355 |
|
|
|
| 356 |
|
|
EXPORT_SYMBOL(inet6_bind);
|
| 357 |
|
|
|
| 358 |
|
|
int inet6_release(struct socket *sock)
|
| 359 |
|
|
{
|
| 360 |
|
|
struct sock *sk = sock->sk;
|
| 361 |
|
|
|
| 362 |
|
|
if (sk == NULL)
|
| 363 |
|
|
return -EINVAL;
|
| 364 |
|
|
|
| 365 |
|
|
/* Free mc lists */
|
| 366 |
|
|
ipv6_sock_mc_close(sk);
|
| 367 |
|
|
|
| 368 |
|
|
/* Free ac lists */
|
| 369 |
|
|
ipv6_sock_ac_close(sk);
|
| 370 |
|
|
|
| 371 |
|
|
return inet_release(sock);
|
| 372 |
|
|
}
|
| 373 |
|
|
|
| 374 |
|
|
EXPORT_SYMBOL(inet6_release);
|
| 375 |
|
|
|
| 376 |
|
|
int inet6_destroy_sock(struct sock *sk)
|
| 377 |
|
|
{
|
| 378 |
|
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
| 379 |
|
|
struct sk_buff *skb;
|
| 380 |
|
|
struct ipv6_txoptions *opt;
|
| 381 |
|
|
|
| 382 |
|
|
/* Release rx options */
|
| 383 |
|
|
|
| 384 |
|
|
if ((skb = xchg(&np->pktoptions, NULL)) != NULL)
|
| 385 |
|
|
kfree_skb(skb);
|
| 386 |
|
|
|
| 387 |
|
|
/* Free flowlabels */
|
| 388 |
|
|
fl6_free_socklist(sk);
|
| 389 |
|
|
|
| 390 |
|
|
/* Free tx options */
|
| 391 |
|
|
|
| 392 |
|
|
if ((opt = xchg(&np->opt, NULL)) != NULL)
|
| 393 |
|
|
sock_kfree_s(sk, opt, opt->tot_len);
|
| 394 |
|
|
|
| 395 |
|
|
return 0;
|
| 396 |
|
|
}
|
| 397 |
|
|
|
| 398 |
|
|
EXPORT_SYMBOL_GPL(inet6_destroy_sock);
|
| 399 |
|
|
|
| 400 |
|
|
/*
|
| 401 |
|
|
* This does both peername and sockname.
|
| 402 |
|
|
*/
|
| 403 |
|
|
|
| 404 |
|
|
int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
|
| 405 |
|
|
int *uaddr_len, int peer)
|
| 406 |
|
|
{
|
| 407 |
|
|
struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr;
|
| 408 |
|
|
struct sock *sk = sock->sk;
|
| 409 |
|
|
struct inet_sock *inet = inet_sk(sk);
|
| 410 |
|
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
| 411 |
|
|
|
| 412 |
|
|
sin->sin6_family = AF_INET6;
|
| 413 |
|
|
sin->sin6_flowinfo = 0;
|
| 414 |
|
|
sin->sin6_scope_id = 0;
|
| 415 |
|
|
if (peer) {
|
| 416 |
|
|
if (!inet->dport)
|
| 417 |
|
|
return -ENOTCONN;
|
| 418 |
|
|
if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
|
| 419 |
|
|
peer == 1)
|
| 420 |
|
|
return -ENOTCONN;
|
| 421 |
|
|
sin->sin6_port = inet->dport;
|
| 422 |
|
|
ipv6_addr_copy(&sin->sin6_addr, &np->daddr);
|
| 423 |
|
|
if (np->sndflow)
|
| 424 |
|
|
sin->sin6_flowinfo = np->flow_label;
|
| 425 |
|
|
} else {
|
| 426 |
|
|
if (ipv6_addr_any(&np->rcv_saddr))
|
| 427 |
|
|
ipv6_addr_copy(&sin->sin6_addr, &np->saddr);
|
| 428 |
|
|
else
|
| 429 |
|
|
ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr);
|
| 430 |
|
|
|
| 431 |
|
|
sin->sin6_port = inet->sport;
|
| 432 |
|
|
}
|
| 433 |
|
|
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
|
| 434 |
|
|
sin->sin6_scope_id = sk->sk_bound_dev_if;
|
| 435 |
|
|
*uaddr_len = sizeof(*sin);
|
| 436 |
|
|
return(0);
|
| 437 |
|
|
}
|
| 438 |
|
|
|
| 439 |
|
|
EXPORT_SYMBOL(inet6_getname);
|
| 440 |
|
|
|
| 441 |
|
|
int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
| 442 |
|
|
{
|
| 443 |
|
|
struct sock *sk = sock->sk;
|
| 444 |
|
|
|
| 445 |
|
|
switch(cmd)
|
| 446 |
|
|
{
|
| 447 |
|
|
case SIOCGSTAMP:
|
| 448 |
|
|
return sock_get_timestamp(sk, (struct timeval __user *)arg);
|
| 449 |
|
|
|
| 450 |
|
|
case SIOCGSTAMPNS:
|
| 451 |
|
|
return sock_get_timestampns(sk, (struct timespec __user *)arg);
|
| 452 |
|
|
|
| 453 |
|
|
case SIOCADDRT:
|
| 454 |
|
|
case SIOCDELRT:
|
| 455 |
|
|
|
| 456 |
|
|
return(ipv6_route_ioctl(cmd,(void __user *)arg));
|
| 457 |
|
|
|
| 458 |
|
|
case SIOCSIFADDR:
|
| 459 |
|
|
return addrconf_add_ifaddr((void __user *) arg);
|
| 460 |
|
|
case SIOCDIFADDR:
|
| 461 |
|
|
return addrconf_del_ifaddr((void __user *) arg);
|
| 462 |
|
|
case SIOCSIFDSTADDR:
|
| 463 |
|
|
return addrconf_set_dstaddr((void __user *) arg);
|
| 464 |
|
|
default:
|
| 465 |
|
|
if (!sk->sk_prot->ioctl)
|
| 466 |
|
|
return -ENOIOCTLCMD;
|
| 467 |
|
|
return sk->sk_prot->ioctl(sk, cmd, arg);
|
| 468 |
|
|
}
|
| 469 |
|
|
/*NOTREACHED*/
|
| 470 |
|
|
return(0);
|
| 471 |
|
|
}
|
| 472 |
|
|
|
| 473 |
|
|
EXPORT_SYMBOL(inet6_ioctl);
|
| 474 |
|
|
|
| 475 |
|
|
const struct proto_ops inet6_stream_ops = {
|
| 476 |
|
|
.family = PF_INET6,
|
| 477 |
|
|
.owner = THIS_MODULE,
|
| 478 |
|
|
.release = inet6_release,
|
| 479 |
|
|
.bind = inet6_bind,
|
| 480 |
|
|
.connect = inet_stream_connect, /* ok */
|
| 481 |
|
|
.socketpair = sock_no_socketpair, /* a do nothing */
|
| 482 |
|
|
.accept = inet_accept, /* ok */
|
| 483 |
|
|
.getname = inet6_getname,
|
| 484 |
|
|
.poll = tcp_poll, /* ok */
|
| 485 |
|
|
.ioctl = inet6_ioctl, /* must change */
|
| 486 |
|
|
.listen = inet_listen, /* ok */
|
| 487 |
|
|
.shutdown = inet_shutdown, /* ok */
|
| 488 |
|
|
.setsockopt = sock_common_setsockopt, /* ok */
|
| 489 |
|
|
.getsockopt = sock_common_getsockopt, /* ok */
|
| 490 |
|
|
.sendmsg = tcp_sendmsg, /* ok */
|
| 491 |
|
|
.recvmsg = sock_common_recvmsg, /* ok */
|
| 492 |
|
|
.mmap = sock_no_mmap,
|
| 493 |
|
|
.sendpage = tcp_sendpage,
|
| 494 |
|
|
#ifdef CONFIG_COMPAT
|
| 495 |
|
|
.compat_setsockopt = compat_sock_common_setsockopt,
|
| 496 |
|
|
.compat_getsockopt = compat_sock_common_getsockopt,
|
| 497 |
|
|
#endif
|
| 498 |
|
|
};
|
| 499 |
|
|
|
| 500 |
|
|
const struct proto_ops inet6_dgram_ops = {
|
| 501 |
|
|
.family = PF_INET6,
|
| 502 |
|
|
.owner = THIS_MODULE,
|
| 503 |
|
|
.release = inet6_release,
|
| 504 |
|
|
.bind = inet6_bind,
|
| 505 |
|
|
.connect = inet_dgram_connect, /* ok */
|
| 506 |
|
|
.socketpair = sock_no_socketpair, /* a do nothing */
|
| 507 |
|
|
.accept = sock_no_accept, /* a do nothing */
|
| 508 |
|
|
.getname = inet6_getname,
|
| 509 |
|
|
.poll = udp_poll, /* ok */
|
| 510 |
|
|
.ioctl = inet6_ioctl, /* must change */
|
| 511 |
|
|
.listen = sock_no_listen, /* ok */
|
| 512 |
|
|
.shutdown = inet_shutdown, /* ok */
|
| 513 |
|
|
.setsockopt = sock_common_setsockopt, /* ok */
|
| 514 |
|
|
.getsockopt = sock_common_getsockopt, /* ok */
|
| 515 |
|
|
.sendmsg = inet_sendmsg, /* ok */
|
| 516 |
|
|
.recvmsg = sock_common_recvmsg, /* ok */
|
| 517 |
|
|
.mmap = sock_no_mmap,
|
| 518 |
|
|
.sendpage = sock_no_sendpage,
|
| 519 |
|
|
#ifdef CONFIG_COMPAT
|
| 520 |
|
|
.compat_setsockopt = compat_sock_common_setsockopt,
|
| 521 |
|
|
.compat_getsockopt = compat_sock_common_getsockopt,
|
| 522 |
|
|
#endif
|
| 523 |
|
|
};
|
| 524 |
|
|
|
| 525 |
|
|
static struct net_proto_family inet6_family_ops = {
|
| 526 |
|
|
.family = PF_INET6,
|
| 527 |
|
|
.create = inet6_create,
|
| 528 |
|
|
.owner = THIS_MODULE,
|
| 529 |
|
|
};
|
| 530 |
|
|
|
| 531 |
|
|
/* Same as inet6_dgram_ops, sans udp_poll. */
|
| 532 |
|
|
static const struct proto_ops inet6_sockraw_ops = {
|
| 533 |
|
|
.family = PF_INET6,
|
| 534 |
|
|
.owner = THIS_MODULE,
|
| 535 |
|
|
.release = inet6_release,
|
| 536 |
|
|
.bind = inet6_bind,
|
| 537 |
|
|
.connect = inet_dgram_connect, /* ok */
|
| 538 |
|
|
.socketpair = sock_no_socketpair, /* a do nothing */
|
| 539 |
|
|
.accept = sock_no_accept, /* a do nothing */
|
| 540 |
|
|
.getname = inet6_getname,
|
| 541 |
|
|
.poll = datagram_poll, /* ok */
|
| 542 |
|
|
.ioctl = inet6_ioctl, /* must change */
|
| 543 |
|
|
.listen = sock_no_listen, /* ok */
|
| 544 |
|
|
.shutdown = inet_shutdown, /* ok */
|
| 545 |
|
|
.setsockopt = sock_common_setsockopt, /* ok */
|
| 546 |
|
|
.getsockopt = sock_common_getsockopt, /* ok */
|
| 547 |
|
|
.sendmsg = inet_sendmsg, /* ok */
|
| 548 |
|
|
.recvmsg = sock_common_recvmsg, /* ok */
|
| 549 |
|
|
.mmap = sock_no_mmap,
|
| 550 |
|
|
.sendpage = sock_no_sendpage,
|
| 551 |
|
|
#ifdef CONFIG_COMPAT
|
| 552 |
|
|
.compat_setsockopt = compat_sock_common_setsockopt,
|
| 553 |
|
|
.compat_getsockopt = compat_sock_common_getsockopt,
|
| 554 |
|
|
#endif
|
| 555 |
|
|
};
|
| 556 |
|
|
|
| 557 |
|
|
static struct inet_protosw rawv6_protosw = {
|
| 558 |
|
|
.type = SOCK_RAW,
|
| 559 |
|
|
.protocol = IPPROTO_IP, /* wild card */
|
| 560 |
|
|
.prot = &rawv6_prot,
|
| 561 |
|
|
.ops = &inet6_sockraw_ops,
|
| 562 |
|
|
.capability = CAP_NET_RAW,
|
| 563 |
|
|
.no_check = UDP_CSUM_DEFAULT,
|
| 564 |
|
|
.flags = INET_PROTOSW_REUSE,
|
| 565 |
|
|
};
|
| 566 |
|
|
|
| 567 |
|
|
void
|
| 568 |
|
|
inet6_register_protosw(struct inet_protosw *p)
|
| 569 |
|
|
{
|
| 570 |
|
|
struct list_head *lh;
|
| 571 |
|
|
struct inet_protosw *answer;
|
| 572 |
|
|
int protocol = p->protocol;
|
| 573 |
|
|
struct list_head *last_perm;
|
| 574 |
|
|
|
| 575 |
|
|
spin_lock_bh(&inetsw6_lock);
|
| 576 |
|
|
|
| 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;
|
| 582 |
|
|
last_perm = &inetsw6[p->type];
|
| 583 |
|
|
list_for_each(lh, &inetsw6[p->type]) {
|
| 584 |
|
|
answer = list_entry(lh, struct inet_protosw, list);
|
| 585 |
|
|
|
| 586 |
|
|
/* Check only the non-wild match. */
|
| 587 |
|
|
if (INET_PROTOSW_PERMANENT & answer->flags) {
|
| 588 |
|
|
if (protocol == answer->protocol)
|
| 589 |
|
|
break;
|
| 590 |
|
|
last_perm = lh;
|
| 591 |
|
|
}
|
| 592 |
|
|
|
| 593 |
|
|
answer = NULL;
|
| 594 |
|
|
}
|
| 595 |
|
|
if (answer)
|
| 596 |
|
|
goto out_permanent;
|
| 597 |
|
|
|
| 598 |
|
|
/* Add the new entry after the last permanent entry if any, so that
|
| 599 |
|
|
* the new entry does not override a permanent entry when matched with
|
| 600 |
|
|
* a wild-card protocol. But it is allowed to override any existing
|
| 601 |
|
|
* non-permanent entry. This means that when we remove this entry, the
|
| 602 |
|
|
* system automatically returns to the old behavior.
|
| 603 |
|
|
*/
|
| 604 |
|
|
list_add_rcu(&p->list, last_perm);
|
| 605 |
|
|
out:
|
| 606 |
|
|
spin_unlock_bh(&inetsw6_lock);
|
| 607 |
|
|
return;
|
| 608 |
|
|
|
| 609 |
|
|
out_permanent:
|
| 610 |
|
|
printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
|
| 611 |
|
|
protocol);
|
| 612 |
|
|
goto out;
|
| 613 |
|
|
|
| 614 |
|
|
out_illegal:
|
| 615 |
|
|
printk(KERN_ERR
|
| 616 |
|
|
"Ignoring attempt to register invalid socket type %d.\n",
|
| 617 |
|
|
p->type);
|
| 618 |
|
|
goto out;
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
EXPORT_SYMBOL(inet6_register_protosw);
|
| 622 |
|
|
|
| 623 |
|
|
void
|
| 624 |
|
|
inet6_unregister_protosw(struct inet_protosw *p)
|
| 625 |
|
|
{
|
| 626 |
|
|
if (INET_PROTOSW_PERMANENT & p->flags) {
|
| 627 |
|
|
printk(KERN_ERR
|
| 628 |
|
|
"Attempt to unregister permanent protocol %d.\n",
|
| 629 |
|
|
p->protocol);
|
| 630 |
|
|
} else {
|
| 631 |
|
|
spin_lock_bh(&inetsw6_lock);
|
| 632 |
|
|
list_del_rcu(&p->list);
|
| 633 |
|
|
spin_unlock_bh(&inetsw6_lock);
|
| 634 |
|
|
|
| 635 |
|
|
synchronize_net();
|
| 636 |
|
|
}
|
| 637 |
|
|
}
|
| 638 |
|
|
|
| 639 |
|
|
EXPORT_SYMBOL(inet6_unregister_protosw);
|
| 640 |
|
|
|
| 641 |
|
|
int inet6_sk_rebuild_header(struct sock *sk)
|
| 642 |
|
|
{
|
| 643 |
|
|
int err;
|
| 644 |
|
|
struct dst_entry *dst;
|
| 645 |
|
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
| 646 |
|
|
|
| 647 |
|
|
dst = __sk_dst_check(sk, np->dst_cookie);
|
| 648 |
|
|
|
| 649 |
|
|
if (dst == NULL) {
|
| 650 |
|
|
struct inet_sock *inet = inet_sk(sk);
|
| 651 |
|
|
struct in6_addr *final_p = NULL, final;
|
| 652 |
|
|
struct flowi fl;
|
| 653 |
|
|
|
| 654 |
|
|
memset(&fl, 0, sizeof(fl));
|
| 655 |
|
|
fl.proto = sk->sk_protocol;
|
| 656 |
|
|
ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
|
| 657 |
|
|
ipv6_addr_copy(&fl.fl6_src, &np->saddr);
|
| 658 |
|
|
fl.fl6_flowlabel = np->flow_label;
|
| 659 |
|
|
fl.oif = sk->sk_bound_dev_if;
|
| 660 |
|
|
fl.fl_ip_dport = inet->dport;
|
| 661 |
|
|
fl.fl_ip_sport = inet->sport;
|
| 662 |
|
|
security_sk_classify_flow(sk, &fl);
|
| 663 |
|
|
|
| 664 |
|
|
if (np->opt && np->opt->srcrt) {
|
| 665 |
|
|
struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
|
| 666 |
|
|
ipv6_addr_copy(&final, &fl.fl6_dst);
|
| 667 |
|
|
ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
|
| 668 |
|
|
final_p = &final;
|
| 669 |
|
|
}
|
| 670 |
|
|
|
| 671 |
|
|
err = ip6_dst_lookup(sk, &dst, &fl);
|
| 672 |
|
|
if (err) {
|
| 673 |
|
|
sk->sk_route_caps = 0;
|
| 674 |
|
|
return err;
|
| 675 |
|
|
}
|
| 676 |
|
|
if (final_p)
|
| 677 |
|
|
ipv6_addr_copy(&fl.fl6_dst, final_p);
|
| 678 |
|
|
|
| 679 |
|
|
if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
|
| 680 |
|
|
sk->sk_err_soft = -err;
|
| 681 |
|
|
return err;
|
| 682 |
|
|
}
|
| 683 |
|
|
|
| 684 |
|
|
__ip6_dst_store(sk, dst, NULL, NULL);
|
| 685 |
|
|
}
|
| 686 |
|
|
|
| 687 |
|
|
return 0;
|
| 688 |
|
|
}
|
| 689 |
|
|
|
| 690 |
|
|
EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
|
| 691 |
|
|
|
| 692 |
|
|
int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
|
| 693 |
|
|
{
|
| 694 |
|
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
| 695 |
|
|
struct inet6_skb_parm *opt = IP6CB(skb);
|
| 696 |
|
|
|
| 697 |
|
|
if (np->rxopt.all) {
|
| 698 |
|
|
if ((opt->hop && (np->rxopt.bits.hopopts ||
|
| 699 |
|
|
np->rxopt.bits.ohopopts)) ||
|
| 700 |
|
|
((IPV6_FLOWINFO_MASK &
|
| 701 |
|
|
*(__be32 *)skb_network_header(skb)) &&
|
| 702 |
|
|
np->rxopt.bits.rxflow) ||
|
| 703 |
|
|
(opt->srcrt && (np->rxopt.bits.srcrt ||
|
| 704 |
|
|
np->rxopt.bits.osrcrt)) ||
|
| 705 |
|
|
((opt->dst1 || opt->dst0) &&
|
| 706 |
|
|
(np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
|
| 707 |
|
|
return 1;
|
| 708 |
|
|
}
|
| 709 |
|
|
return 0;
|
| 710 |
|
|
}
|
| 711 |
|
|
|
| 712 |
|
|
EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
|
| 713 |
|
|
|
| 714 |
|
|
static int __init init_ipv6_mibs(void)
|
| 715 |
|
|
{
|
| 716 |
|
|
if (snmp_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib),
|
| 717 |
|
|
__alignof__(struct ipstats_mib)) < 0)
|
| 718 |
|
|
goto err_ip_mib;
|
| 719 |
|
|
if (snmp_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib),
|
| 720 |
|
|
__alignof__(struct icmpv6_mib)) < 0)
|
| 721 |
|
|
goto err_icmp_mib;
|
| 722 |
|
|
if (snmp_mib_init((void **)icmpv6msg_statistics,
|
| 723 |
|
|
sizeof (struct icmpv6msg_mib), __alignof__(struct icmpv6_mib)) < 0)
|
| 724 |
|
|
goto err_icmpmsg_mib;
|
| 725 |
|
|
if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib),
|
| 726 |
|
|
__alignof__(struct udp_mib)) < 0)
|
| 727 |
|
|
goto err_udp_mib;
|
| 728 |
|
|
if (snmp_mib_init((void **)udplite_stats_in6, sizeof (struct udp_mib),
|
| 729 |
|
|
__alignof__(struct udp_mib)) < 0)
|
| 730 |
|
|
goto err_udplite_mib;
|
| 731 |
|
|
return 0;
|
| 732 |
|
|
|
| 733 |
|
|
err_udplite_mib:
|
| 734 |
|
|
snmp_mib_free((void **)udp_stats_in6);
|
| 735 |
|
|
err_udp_mib:
|
| 736 |
|
|
snmp_mib_free((void **)icmpv6msg_statistics);
|
| 737 |
|
|
err_icmpmsg_mib:
|
| 738 |
|
|
snmp_mib_free((void **)icmpv6_statistics);
|
| 739 |
|
|
err_icmp_mib:
|
| 740 |
|
|
snmp_mib_free((void **)ipv6_statistics);
|
| 741 |
|
|
err_ip_mib:
|
| 742 |
|
|
return -ENOMEM;
|
| 743 |
|
|
|
| 744 |
|
|
}
|
| 745 |
|
|
|
| 746 |
|
|
static void cleanup_ipv6_mibs(void)
|
| 747 |
|
|
{
|
| 748 |
|
|
snmp_mib_free((void **)ipv6_statistics);
|
| 749 |
|
|
snmp_mib_free((void **)icmpv6_statistics);
|
| 750 |
|
|
snmp_mib_free((void **)icmpv6msg_statistics);
|
| 751 |
|
|
snmp_mib_free((void **)udp_stats_in6);
|
| 752 |
|
|
snmp_mib_free((void **)udplite_stats_in6);
|
| 753 |
|
|
}
|
| 754 |
|
|
|
| 755 |
|
|
static int __init inet6_init(void)
|
| 756 |
|
|
{
|
| 757 |
|
|
struct sk_buff *dummy_skb;
|
| 758 |
|
|
struct list_head *r;
|
| 759 |
|
|
int err;
|
| 760 |
|
|
|
| 761 |
|
|
BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
|
| 762 |
|
|
|
| 763 |
|
|
#ifdef MODULE
|
| 764 |
|
|
#if 0 /* FIXME --RR */
|
| 765 |
|
|
if (!mod_member_present(&__this_module, can_unload))
|
| 766 |
|
|
return -EINVAL;
|
| 767 |
|
|
|
| 768 |
|
|
__this_module.can_unload = &ipv6_unload;
|
| 769 |
|
|
#endif
|
| 770 |
|
|
#endif
|
| 771 |
|
|
|
| 772 |
|
|
err = proto_register(&tcpv6_prot, 1);
|
| 773 |
|
|
if (err)
|
| 774 |
|
|
goto out;
|
| 775 |
|
|
|
| 776 |
|
|
err = proto_register(&udpv6_prot, 1);
|
| 777 |
|
|
if (err)
|
| 778 |
|
|
goto out_unregister_tcp_proto;
|
| 779 |
|
|
|
| 780 |
|
|
err = proto_register(&udplitev6_prot, 1);
|
| 781 |
|
|
if (err)
|
| 782 |
|
|
goto out_unregister_udp_proto;
|
| 783 |
|
|
|
| 784 |
|
|
err = proto_register(&rawv6_prot, 1);
|
| 785 |
|
|
if (err)
|
| 786 |
|
|
goto out_unregister_udplite_proto;
|
| 787 |
|
|
|
| 788 |
|
|
|
| 789 |
|
|
/* Register the socket-side information for inet6_create. */
|
| 790 |
|
|
for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
|
| 791 |
|
|
INIT_LIST_HEAD(r);
|
| 792 |
|
|
|
| 793 |
|
|
/* We MUST register RAW sockets before we create the ICMP6,
|
| 794 |
|
|
* IGMP6, or NDISC control sockets.
|
| 795 |
|
|
*/
|
| 796 |
|
|
inet6_register_protosw(&rawv6_protosw);
|
| 797 |
|
|
|
| 798 |
|
|
/* Register the family here so that the init calls below will
|
| 799 |
|
|
* be able to create sockets. (?? is this dangerous ??)
|
| 800 |
|
|
*/
|
| 801 |
|
|
err = sock_register(&inet6_family_ops);
|
| 802 |
|
|
if (err)
|
| 803 |
|
|
goto out_unregister_raw_proto;
|
| 804 |
|
|
|
| 805 |
|
|
/* Initialise ipv6 mibs */
|
| 806 |
|
|
err = init_ipv6_mibs();
|
| 807 |
|
|
if (err)
|
| 808 |
|
|
goto out_unregister_sock;
|
| 809 |
|
|
|
| 810 |
|
|
/*
|
| 811 |
|
|
* ipngwg API draft makes clear that the correct semantics
|
| 812 |
|
|
* for TCP and UDP is to consider one TCP and UDP instance
|
| 813 |
|
|
* in a host availiable by both INET and INET6 APIs and
|
| 814 |
|
|
* able to communicate via both network protocols.
|
| 815 |
|
|
*/
|
| 816 |
|
|
|
| 817 |
|
|
#ifdef CONFIG_SYSCTL
|
| 818 |
|
|
ipv6_sysctl_register();
|
| 819 |
|
|
#endif
|
| 820 |
|
|
err = icmpv6_init(&inet6_family_ops);
|
| 821 |
|
|
if (err)
|
| 822 |
|
|
goto icmp_fail;
|
| 823 |
|
|
err = ndisc_init(&inet6_family_ops);
|
| 824 |
|
|
if (err)
|
| 825 |
|
|
goto ndisc_fail;
|
| 826 |
|
|
err = igmp6_init(&inet6_family_ops);
|
| 827 |
|
|
if (err)
|
| 828 |
|
|
goto igmp_fail;
|
| 829 |
|
|
err = ipv6_netfilter_init();
|
| 830 |
|
|
if (err)
|
| 831 |
|
|
goto netfilter_fail;
|
| 832 |
|
|
/* Create /proc/foo6 entries. */
|
| 833 |
|
|
#ifdef CONFIG_PROC_FS
|
| 834 |
|
|
err = -ENOMEM;
|
| 835 |
|
|
if (raw6_proc_init())
|
| 836 |
|
|
goto proc_raw6_fail;
|
| 837 |
|
|
if (tcp6_proc_init())
|
| 838 |
|
|
goto proc_tcp6_fail;
|
| 839 |
|
|
if (udp6_proc_init())
|
| 840 |
|
|
goto proc_udp6_fail;
|
| 841 |
|
|
if (udplite6_proc_init())
|
| 842 |
|
|
goto proc_udplite6_fail;
|
| 843 |
|
|
if (ipv6_misc_proc_init())
|
| 844 |
|
|
goto proc_misc6_fail;
|
| 845 |
|
|
|
| 846 |
|
|
if (ac6_proc_init())
|
| 847 |
|
|
goto proc_anycast6_fail;
|
| 848 |
|
|
if (if6_proc_init())
|
| 849 |
|
|
goto proc_if6_fail;
|
| 850 |
|
|
#endif
|
| 851 |
|
|
ip6_route_init();
|
| 852 |
|
|
ip6_flowlabel_init();
|
| 853 |
|
|
err = addrconf_init();
|
| 854 |
|
|
if (err)
|
| 855 |
|
|
goto addrconf_fail;
|
| 856 |
|
|
|
| 857 |
|
|
/* Init v6 extension headers. */
|
| 858 |
|
|
ipv6_rthdr_init();
|
| 859 |
|
|
ipv6_frag_init();
|
| 860 |
|
|
ipv6_nodata_init();
|
| 861 |
|
|
ipv6_destopt_init();
|
| 862 |
|
|
|
| 863 |
|
|
/* Init v6 transport protocols. */
|
| 864 |
|
|
udpv6_init();
|
| 865 |
|
|
udplitev6_init();
|
| 866 |
|
|
tcpv6_init();
|
| 867 |
|
|
|
| 868 |
|
|
ipv6_packet_init();
|
| 869 |
|
|
err = 0;
|
| 870 |
|
|
out:
|
| 871 |
|
|
return err;
|
| 872 |
|
|
|
| 873 |
|
|
addrconf_fail:
|
| 874 |
|
|
ip6_flowlabel_cleanup();
|
| 875 |
|
|
ip6_route_cleanup();
|
| 876 |
|
|
#ifdef CONFIG_PROC_FS
|
| 877 |
|
|
if6_proc_exit();
|
| 878 |
|
|
proc_if6_fail:
|
| 879 |
|
|
ac6_proc_exit();
|
| 880 |
|
|
proc_anycast6_fail:
|
| 881 |
|
|
ipv6_misc_proc_exit();
|
| 882 |
|
|
proc_misc6_fail:
|
| 883 |
|
|
udplite6_proc_exit();
|
| 884 |
|
|
proc_udplite6_fail:
|
| 885 |
|
|
udp6_proc_exit();
|
| 886 |
|
|
proc_udp6_fail:
|
| 887 |
|
|
tcp6_proc_exit();
|
| 888 |
|
|
proc_tcp6_fail:
|
| 889 |
|
|
raw6_proc_exit();
|
| 890 |
|
|
proc_raw6_fail:
|
| 891 |
|
|
#endif
|
| 892 |
|
|
ipv6_netfilter_fini();
|
| 893 |
|
|
netfilter_fail:
|
| 894 |
|
|
igmp6_cleanup();
|
| 895 |
|
|
igmp_fail:
|
| 896 |
|
|
ndisc_cleanup();
|
| 897 |
|
|
ndisc_fail:
|
| 898 |
|
|
icmpv6_cleanup();
|
| 899 |
|
|
icmp_fail:
|
| 900 |
|
|
#ifdef CONFIG_SYSCTL
|
| 901 |
|
|
ipv6_sysctl_unregister();
|
| 902 |
|
|
#endif
|
| 903 |
|
|
cleanup_ipv6_mibs();
|
| 904 |
|
|
out_unregister_sock:
|
| 905 |
|
|
sock_unregister(PF_INET6);
|
| 906 |
|
|
out_unregister_raw_proto:
|
| 907 |
|
|
proto_unregister(&rawv6_prot);
|
| 908 |
|
|
out_unregister_udplite_proto:
|
| 909 |
|
|
proto_unregister(&udplitev6_prot);
|
| 910 |
|
|
out_unregister_udp_proto:
|
| 911 |
|
|
proto_unregister(&udpv6_prot);
|
| 912 |
|
|
out_unregister_tcp_proto:
|
| 913 |
|
|
proto_unregister(&tcpv6_prot);
|
| 914 |
|
|
goto out;
|
| 915 |
|
|
}
|
| 916 |
|
|
module_init(inet6_init);
|
| 917 |
|
|
|
| 918 |
|
|
static void __exit inet6_exit(void)
|
| 919 |
|
|
{
|
| 920 |
|
|
/* First of all disallow new sockets creation. */
|
| 921 |
|
|
sock_unregister(PF_INET6);
|
| 922 |
|
|
/* Disallow any further netlink messages */
|
| 923 |
|
|
rtnl_unregister_all(PF_INET6);
|
| 924 |
|
|
|
| 925 |
|
|
/* Cleanup code parts. */
|
| 926 |
|
|
ipv6_packet_cleanup();
|
| 927 |
|
|
|
| 928 |
|
|
addrconf_cleanup();
|
| 929 |
|
|
ip6_flowlabel_cleanup();
|
| 930 |
|
|
ip6_route_cleanup();
|
| 931 |
|
|
#ifdef CONFIG_PROC_FS
|
| 932 |
|
|
|
| 933 |
|
|
/* Cleanup code parts. */
|
| 934 |
|
|
if6_proc_exit();
|
| 935 |
|
|
ac6_proc_exit();
|
| 936 |
|
|
ipv6_misc_proc_exit();
|
| 937 |
|
|
udplite6_proc_exit();
|
| 938 |
|
|
udp6_proc_exit();
|
| 939 |
|
|
tcp6_proc_exit();
|
| 940 |
|
|
raw6_proc_exit();
|
| 941 |
|
|
#endif
|
| 942 |
|
|
ipv6_netfilter_fini();
|
| 943 |
|
|
igmp6_cleanup();
|
| 944 |
|
|
ndisc_cleanup();
|
| 945 |
|
|
icmpv6_cleanup();
|
| 946 |
|
|
#ifdef CONFIG_SYSCTL
|
| 947 |
|
|
ipv6_sysctl_unregister();
|
| 948 |
|
|
#endif
|
| 949 |
|
|
cleanup_ipv6_mibs();
|
| 950 |
|
|
proto_unregister(&rawv6_prot);
|
| 951 |
|
|
proto_unregister(&udplitev6_prot);
|
| 952 |
|
|
proto_unregister(&udpv6_prot);
|
| 953 |
|
|
proto_unregister(&tcpv6_prot);
|
| 954 |
|
|
}
|
| 955 |
|
|
module_exit(inet6_exit);
|
| 956 |
|
|
|
| 957 |
|
|
MODULE_ALIAS_NETPROTO(PF_INET6);
|
