11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * PF_INET6 socket protocol family 31da177e4SLinus Torvalds * Linux INET6 implementation 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Authors: 61da177e4SLinus Torvalds * Pedro Roque <roque@di.fc.ul.pt> 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * Adapted from linux/net/ipv4/af_inet.c 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * $Id: af_inet6.c,v 1.66 2002/02/01 22:01:04 davem Exp $ 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Fixes: 131da177e4SLinus Torvalds * piggy, Karl Knutson : Socket protocol table 141da177e4SLinus Torvalds * Hideaki YOSHIFUJI : sin6_scope_id support 151da177e4SLinus Torvalds * Arnaldo Melo : check proc_net_create return, cleanups 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 181da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 191da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 201da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 211da177e4SLinus Torvalds */ 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds #include <linux/module.h> 251da177e4SLinus Torvalds #include <linux/config.h> 261da177e4SLinus Torvalds #include <linux/errno.h> 271da177e4SLinus Torvalds #include <linux/types.h> 281da177e4SLinus Torvalds #include <linux/socket.h> 291da177e4SLinus Torvalds #include <linux/in.h> 301da177e4SLinus Torvalds #include <linux/kernel.h> 311da177e4SLinus Torvalds #include <linux/sched.h> 321da177e4SLinus Torvalds #include <linux/timer.h> 331da177e4SLinus Torvalds #include <linux/string.h> 341da177e4SLinus Torvalds #include <linux/sockios.h> 351da177e4SLinus Torvalds #include <linux/net.h> 361da177e4SLinus Torvalds #include <linux/fcntl.h> 371da177e4SLinus Torvalds #include <linux/mm.h> 381da177e4SLinus Torvalds #include <linux/interrupt.h> 391da177e4SLinus Torvalds #include <linux/proc_fs.h> 401da177e4SLinus Torvalds #include <linux/stat.h> 411da177e4SLinus Torvalds #include <linux/init.h> 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds #include <linux/inet.h> 441da177e4SLinus Torvalds #include <linux/netdevice.h> 451da177e4SLinus Torvalds #include <linux/icmpv6.h> 461da177e4SLinus Torvalds #include <linux/smp_lock.h> 472cc7d573SHarald Welte #include <linux/netfilter_ipv6.h> 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds #include <net/ip.h> 501da177e4SLinus Torvalds #include <net/ipv6.h> 511da177e4SLinus Torvalds #include <net/udp.h> 521da177e4SLinus Torvalds #include <net/tcp.h> 531da177e4SLinus Torvalds #include <net/ipip.h> 541da177e4SLinus Torvalds #include <net/protocol.h> 551da177e4SLinus Torvalds #include <net/inet_common.h> 561da177e4SLinus Torvalds #include <net/transp_v6.h> 571da177e4SLinus Torvalds #include <net/ip6_route.h> 581da177e4SLinus Torvalds #include <net/addrconf.h> 591da177e4SLinus Torvalds #ifdef CONFIG_IPV6_TUNNEL 601da177e4SLinus Torvalds #include <net/ip6_tunnel.h> 611da177e4SLinus Torvalds #endif 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds #include <asm/uaccess.h> 641da177e4SLinus Torvalds #include <asm/system.h> 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds MODULE_AUTHOR("Cast of dozens"); 671da177e4SLinus Torvalds MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); 681da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds /* IPv6 procfs goodies... */ 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 731da177e4SLinus Torvalds extern int raw6_proc_init(void); 741da177e4SLinus Torvalds extern void raw6_proc_exit(void); 751da177e4SLinus Torvalds extern int tcp6_proc_init(void); 761da177e4SLinus Torvalds extern void tcp6_proc_exit(void); 771da177e4SLinus Torvalds extern int udp6_proc_init(void); 781da177e4SLinus Torvalds extern void udp6_proc_exit(void); 791da177e4SLinus Torvalds extern int ipv6_misc_proc_init(void); 801da177e4SLinus Torvalds extern void ipv6_misc_proc_exit(void); 811da177e4SLinus Torvalds extern int ac6_proc_init(void); 821da177e4SLinus Torvalds extern void ac6_proc_exit(void); 831da177e4SLinus Torvalds extern int if6_proc_init(void); 841da177e4SLinus Torvalds extern void if6_proc_exit(void); 851da177e4SLinus Torvalds #endif 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds int sysctl_ipv6_bindv6only; 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds /* The inetsw table contains everything that inet_create needs to 901da177e4SLinus Torvalds * build a new socket. 911da177e4SLinus Torvalds */ 921da177e4SLinus Torvalds static struct list_head inetsw6[SOCK_MAX]; 931da177e4SLinus Torvalds static DEFINE_SPINLOCK(inetsw6_lock); 941da177e4SLinus Torvalds 951da177e4SLinus Torvalds static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) 961da177e4SLinus Torvalds { 971da177e4SLinus Torvalds const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds return (struct ipv6_pinfo *)(((u8 *)sk) + offset); 1001da177e4SLinus Torvalds } 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvalds static int inet6_create(struct socket *sock, int protocol) 1031da177e4SLinus Torvalds { 1041da177e4SLinus Torvalds struct inet_sock *inet; 1051da177e4SLinus Torvalds struct ipv6_pinfo *np; 1061da177e4SLinus Torvalds struct sock *sk; 1071da177e4SLinus Torvalds struct list_head *p; 1081da177e4SLinus Torvalds struct inet_protosw *answer; 1091da177e4SLinus Torvalds struct proto *answer_prot; 1101da177e4SLinus Torvalds unsigned char answer_flags; 1111da177e4SLinus Torvalds char answer_no_check; 1121da177e4SLinus Torvalds int rc; 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds /* Look for the requested type/protocol pair. */ 1151da177e4SLinus Torvalds answer = NULL; 1161da177e4SLinus Torvalds rcu_read_lock(); 1171da177e4SLinus Torvalds list_for_each_rcu(p, &inetsw6[sock->type]) { 1181da177e4SLinus Torvalds answer = list_entry(p, struct inet_protosw, list); 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds /* Check the non-wild match. */ 1211da177e4SLinus Torvalds if (protocol == answer->protocol) { 1221da177e4SLinus Torvalds if (protocol != IPPROTO_IP) 1231da177e4SLinus Torvalds break; 1241da177e4SLinus Torvalds } else { 1251da177e4SLinus Torvalds /* Check for the two wild cases. */ 1261da177e4SLinus Torvalds if (IPPROTO_IP == protocol) { 1271da177e4SLinus Torvalds protocol = answer->protocol; 1281da177e4SLinus Torvalds break; 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds if (IPPROTO_IP == answer->protocol) 1311da177e4SLinus Torvalds break; 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds answer = NULL; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds rc = -ESOCKTNOSUPPORT; 1371da177e4SLinus Torvalds if (!answer) 1381da177e4SLinus Torvalds goto out_rcu_unlock; 1391da177e4SLinus Torvalds rc = -EPERM; 1401da177e4SLinus Torvalds if (answer->capability > 0 && !capable(answer->capability)) 1411da177e4SLinus Torvalds goto out_rcu_unlock; 1421da177e4SLinus Torvalds rc = -EPROTONOSUPPORT; 1431da177e4SLinus Torvalds if (!protocol) 1441da177e4SLinus Torvalds goto out_rcu_unlock; 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds sock->ops = answer->ops; 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds answer_prot = answer->prot; 1491da177e4SLinus Torvalds answer_no_check = answer->no_check; 1501da177e4SLinus Torvalds answer_flags = answer->flags; 1511da177e4SLinus Torvalds rcu_read_unlock(); 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds BUG_TRAP(answer_prot->slab != NULL); 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds rc = -ENOBUFS; 1561da177e4SLinus Torvalds sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1); 1571da177e4SLinus Torvalds if (sk == NULL) 1581da177e4SLinus Torvalds goto out; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds sock_init_data(sock, sk); 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds rc = 0; 1631da177e4SLinus Torvalds sk->sk_no_check = answer_no_check; 1641da177e4SLinus Torvalds if (INET_PROTOSW_REUSE & answer_flags) 1651da177e4SLinus Torvalds sk->sk_reuse = 1; 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds inet = inet_sk(sk); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds if (SOCK_RAW == sock->type) { 1701da177e4SLinus Torvalds inet->num = protocol; 1711da177e4SLinus Torvalds if (IPPROTO_RAW == protocol) 1721da177e4SLinus Torvalds inet->hdrincl = 1; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds 175e6848976SArnaldo Carvalho de Melo sk->sk_destruct = inet_sock_destruct; 1761da177e4SLinus Torvalds sk->sk_family = PF_INET6; 1771da177e4SLinus Torvalds sk->sk_protocol = protocol; 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds sk->sk_backlog_rcv = answer->prot->backlog_rcv; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); 1821da177e4SLinus Torvalds np->hop_limit = -1; 1831da177e4SLinus Torvalds np->mcast_hops = -1; 1841da177e4SLinus Torvalds np->mc_loop = 1; 1851da177e4SLinus Torvalds np->pmtudisc = IPV6_PMTUDISC_WANT; 1861da177e4SLinus Torvalds np->ipv6only = sysctl_ipv6_bindv6only; 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds /* Init the ipv4 part of the socket since we can have sockets 1891da177e4SLinus Torvalds * using v6 API for ipv4. 1901da177e4SLinus Torvalds */ 1911da177e4SLinus Torvalds inet->uc_ttl = -1; 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds inet->mc_loop = 1; 1941da177e4SLinus Torvalds inet->mc_ttl = 1; 1951da177e4SLinus Torvalds inet->mc_index = 0; 1961da177e4SLinus Torvalds inet->mc_list = NULL; 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds if (ipv4_config.no_pmtu_disc) 1991da177e4SLinus Torvalds inet->pmtudisc = IP_PMTUDISC_DONT; 2001da177e4SLinus Torvalds else 2011da177e4SLinus Torvalds inet->pmtudisc = IP_PMTUDISC_WANT; 202e6848976SArnaldo Carvalho de Melo /* 203e6848976SArnaldo Carvalho de Melo * Increment only the relevant sk_prot->socks debug field, this changes 204e6848976SArnaldo Carvalho de Melo * the previous behaviour of incrementing both the equivalent to 205e6848976SArnaldo Carvalho de Melo * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. 206e6848976SArnaldo Carvalho de Melo * 207e6848976SArnaldo Carvalho de Melo * This allows better debug granularity as we'll know exactly how many 208e6848976SArnaldo Carvalho de Melo * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 209e6848976SArnaldo Carvalho de Melo * transport protocol socks. -acme 210e6848976SArnaldo Carvalho de Melo */ 211e6848976SArnaldo Carvalho de Melo sk_refcnt_debug_inc(sk); 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvalds if (inet->num) { 2141da177e4SLinus Torvalds /* It assumes that any protocol which allows 2151da177e4SLinus Torvalds * the user to assign a number at socket 2161da177e4SLinus Torvalds * creation time automatically shares. 2171da177e4SLinus Torvalds */ 2181da177e4SLinus Torvalds inet->sport = ntohs(inet->num); 2191da177e4SLinus Torvalds sk->sk_prot->hash(sk); 2201da177e4SLinus Torvalds } 2211da177e4SLinus Torvalds if (sk->sk_prot->init) { 2221da177e4SLinus Torvalds rc = sk->sk_prot->init(sk); 2231da177e4SLinus Torvalds if (rc) { 2241da177e4SLinus Torvalds sk_common_release(sk); 2251da177e4SLinus Torvalds goto out; 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds out: 2291da177e4SLinus Torvalds return rc; 2301da177e4SLinus Torvalds out_rcu_unlock: 2311da177e4SLinus Torvalds rcu_read_unlock(); 2321da177e4SLinus Torvalds goto out; 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds /* bind for INET6 API */ 2371da177e4SLinus Torvalds int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 2381da177e4SLinus Torvalds { 2391da177e4SLinus Torvalds struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; 2401da177e4SLinus Torvalds struct sock *sk = sock->sk; 2411da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 2421da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 2431da177e4SLinus Torvalds __u32 v4addr = 0; 2441da177e4SLinus Torvalds unsigned short snum; 2451da177e4SLinus Torvalds int addr_type = 0; 2461da177e4SLinus Torvalds int err = 0; 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds /* If the socket has its own bind function then use it. */ 2491da177e4SLinus Torvalds if (sk->sk_prot->bind) 2501da177e4SLinus Torvalds return sk->sk_prot->bind(sk, uaddr, addr_len); 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 2531da177e4SLinus Torvalds return -EINVAL; 2541da177e4SLinus Torvalds addr_type = ipv6_addr_type(&addr->sin6_addr); 2551da177e4SLinus Torvalds if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) 2561da177e4SLinus Torvalds return -EINVAL; 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds snum = ntohs(addr->sin6_port); 2591da177e4SLinus Torvalds if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) 2601da177e4SLinus Torvalds return -EACCES; 2611da177e4SLinus Torvalds 2621da177e4SLinus Torvalds lock_sock(sk); 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds /* Check these errors (active socket, double bind). */ 2651da177e4SLinus Torvalds if (sk->sk_state != TCP_CLOSE || inet->num) { 2661da177e4SLinus Torvalds err = -EINVAL; 2671da177e4SLinus Torvalds goto out; 2681da177e4SLinus Torvalds } 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds /* Check if the address belongs to the host. */ 2711da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_MAPPED) { 2721da177e4SLinus Torvalds v4addr = addr->sin6_addr.s6_addr32[3]; 2731da177e4SLinus Torvalds if (inet_addr_type(v4addr) != RTN_LOCAL) { 2741da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 2751da177e4SLinus Torvalds goto out; 2761da177e4SLinus Torvalds } 2771da177e4SLinus Torvalds } else { 2781da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) { 2791da177e4SLinus Torvalds struct net_device *dev = NULL; 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds if (addr_type & IPV6_ADDR_LINKLOCAL) { 2821da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 2831da177e4SLinus Torvalds addr->sin6_scope_id) { 2841da177e4SLinus Torvalds /* Override any existing binding, if another one 2851da177e4SLinus Torvalds * is supplied by user. 2861da177e4SLinus Torvalds */ 2871da177e4SLinus Torvalds sk->sk_bound_dev_if = addr->sin6_scope_id; 2881da177e4SLinus Torvalds } 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds /* Binding to link-local address requires an interface */ 2911da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) { 2921da177e4SLinus Torvalds err = -EINVAL; 2931da177e4SLinus Torvalds goto out; 2941da177e4SLinus Torvalds } 2951da177e4SLinus Torvalds dev = dev_get_by_index(sk->sk_bound_dev_if); 2961da177e4SLinus Torvalds if (!dev) { 2971da177e4SLinus Torvalds err = -ENODEV; 2981da177e4SLinus Torvalds goto out; 2991da177e4SLinus Torvalds } 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds /* ipv4 addr of the socket is invalid. Only the 3031da177e4SLinus Torvalds * unspecified and mapped address have a v4 equivalent. 3041da177e4SLinus Torvalds */ 3051da177e4SLinus Torvalds v4addr = LOOPBACK4_IPV6; 3061da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) { 3071da177e4SLinus Torvalds if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) { 3081da177e4SLinus Torvalds if (dev) 3091da177e4SLinus Torvalds dev_put(dev); 3101da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 3111da177e4SLinus Torvalds goto out; 3121da177e4SLinus Torvalds } 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds if (dev) 3151da177e4SLinus Torvalds dev_put(dev); 3161da177e4SLinus Torvalds } 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds inet->rcv_saddr = v4addr; 3201da177e4SLinus Torvalds inet->saddr = v4addr; 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) 3251da177e4SLinus Torvalds ipv6_addr_copy(&np->saddr, &addr->sin6_addr); 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds /* Make sure we are allowed to bind here. */ 3281da177e4SLinus Torvalds if (sk->sk_prot->get_port(sk, snum)) { 3291da177e4SLinus Torvalds inet_reset_saddr(sk); 3301da177e4SLinus Torvalds err = -EADDRINUSE; 3311da177e4SLinus Torvalds goto out; 3321da177e4SLinus Torvalds } 3331da177e4SLinus Torvalds 3341da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) 3351da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDADDR_LOCK; 3361da177e4SLinus Torvalds if (snum) 3371da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDPORT_LOCK; 3381da177e4SLinus Torvalds inet->sport = ntohs(inet->num); 3391da177e4SLinus Torvalds inet->dport = 0; 3401da177e4SLinus Torvalds inet->daddr = 0; 3411da177e4SLinus Torvalds out: 3421da177e4SLinus Torvalds release_sock(sk); 3431da177e4SLinus Torvalds return err; 3441da177e4SLinus Torvalds } 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds int inet6_release(struct socket *sock) 3471da177e4SLinus Torvalds { 3481da177e4SLinus Torvalds struct sock *sk = sock->sk; 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds if (sk == NULL) 3511da177e4SLinus Torvalds return -EINVAL; 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds /* Free mc lists */ 3541da177e4SLinus Torvalds ipv6_sock_mc_close(sk); 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds /* Free ac lists */ 3571da177e4SLinus Torvalds ipv6_sock_ac_close(sk); 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds return inet_release(sock); 3601da177e4SLinus Torvalds } 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds int inet6_destroy_sock(struct sock *sk) 3631da177e4SLinus Torvalds { 3641da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 3651da177e4SLinus Torvalds struct sk_buff *skb; 3661da177e4SLinus Torvalds struct ipv6_txoptions *opt; 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds /* 3691da177e4SLinus Torvalds * Release destination entry 3701da177e4SLinus Torvalds */ 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds sk_dst_reset(sk); 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds /* Release rx options */ 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds if ((skb = xchg(&np->pktoptions, NULL)) != NULL) 3771da177e4SLinus Torvalds kfree_skb(skb); 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds /* Free flowlabels */ 3801da177e4SLinus Torvalds fl6_free_socklist(sk); 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds /* Free tx options */ 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds if ((opt = xchg(&np->opt, NULL)) != NULL) 3851da177e4SLinus Torvalds sock_kfree_s(sk, opt, opt->tot_len); 3861da177e4SLinus Torvalds 3871da177e4SLinus Torvalds return 0; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds /* 3911da177e4SLinus Torvalds * This does both peername and sockname. 3921da177e4SLinus Torvalds */ 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds int inet6_getname(struct socket *sock, struct sockaddr *uaddr, 3951da177e4SLinus Torvalds int *uaddr_len, int peer) 3961da177e4SLinus Torvalds { 3971da177e4SLinus Torvalds struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; 3981da177e4SLinus Torvalds struct sock *sk = sock->sk; 3991da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 4001da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds sin->sin6_family = AF_INET6; 4031da177e4SLinus Torvalds sin->sin6_flowinfo = 0; 4041da177e4SLinus Torvalds sin->sin6_scope_id = 0; 4051da177e4SLinus Torvalds if (peer) { 4061da177e4SLinus Torvalds if (!inet->dport) 4071da177e4SLinus Torvalds return -ENOTCONN; 4081da177e4SLinus Torvalds if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && 4091da177e4SLinus Torvalds peer == 1) 4101da177e4SLinus Torvalds return -ENOTCONN; 4111da177e4SLinus Torvalds sin->sin6_port = inet->dport; 4121da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->daddr); 4131da177e4SLinus Torvalds if (np->sndflow) 4141da177e4SLinus Torvalds sin->sin6_flowinfo = np->flow_label; 4151da177e4SLinus Torvalds } else { 4161da177e4SLinus Torvalds if (ipv6_addr_any(&np->rcv_saddr)) 4171da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->saddr); 4181da177e4SLinus Torvalds else 4191da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds sin->sin6_port = inet->sport; 4221da177e4SLinus Torvalds } 4231da177e4SLinus Torvalds if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) 4241da177e4SLinus Torvalds sin->sin6_scope_id = sk->sk_bound_dev_if; 4251da177e4SLinus Torvalds *uaddr_len = sizeof(*sin); 4261da177e4SLinus Torvalds return(0); 4271da177e4SLinus Torvalds } 4281da177e4SLinus Torvalds 4291da177e4SLinus Torvalds int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 4301da177e4SLinus Torvalds { 4311da177e4SLinus Torvalds struct sock *sk = sock->sk; 4321da177e4SLinus Torvalds int err = -EINVAL; 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds switch(cmd) 4351da177e4SLinus Torvalds { 4361da177e4SLinus Torvalds case SIOCGSTAMP: 4371da177e4SLinus Torvalds return sock_get_timestamp(sk, (struct timeval __user *)arg); 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds case SIOCADDRT: 4401da177e4SLinus Torvalds case SIOCDELRT: 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds return(ipv6_route_ioctl(cmd,(void __user *)arg)); 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds case SIOCSIFADDR: 4451da177e4SLinus Torvalds return addrconf_add_ifaddr((void __user *) arg); 4461da177e4SLinus Torvalds case SIOCDIFADDR: 4471da177e4SLinus Torvalds return addrconf_del_ifaddr((void __user *) arg); 4481da177e4SLinus Torvalds case SIOCSIFDSTADDR: 4491da177e4SLinus Torvalds return addrconf_set_dstaddr((void __user *) arg); 4501da177e4SLinus Torvalds default: 4511da177e4SLinus Torvalds if (!sk->sk_prot->ioctl || 4521da177e4SLinus Torvalds (err = sk->sk_prot->ioctl(sk, cmd, arg)) == -ENOIOCTLCMD) 4531da177e4SLinus Torvalds return(dev_ioctl(cmd,(void __user *) arg)); 4541da177e4SLinus Torvalds return err; 4551da177e4SLinus Torvalds } 4561da177e4SLinus Torvalds /*NOTREACHED*/ 4571da177e4SLinus Torvalds return(0); 4581da177e4SLinus Torvalds } 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds struct proto_ops inet6_stream_ops = { 4611da177e4SLinus Torvalds .family = PF_INET6, 4621da177e4SLinus Torvalds .owner = THIS_MODULE, 4631da177e4SLinus Torvalds .release = inet6_release, 4641da177e4SLinus Torvalds .bind = inet6_bind, 4651da177e4SLinus Torvalds .connect = inet_stream_connect, /* ok */ 4661da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 4671da177e4SLinus Torvalds .accept = inet_accept, /* ok */ 4681da177e4SLinus Torvalds .getname = inet6_getname, 4691da177e4SLinus Torvalds .poll = tcp_poll, /* ok */ 4701da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 4711da177e4SLinus Torvalds .listen = inet_listen, /* ok */ 4721da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 4731da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 4741da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 4751da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 4761da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 4771da177e4SLinus Torvalds .mmap = sock_no_mmap, 4781da177e4SLinus Torvalds .sendpage = tcp_sendpage 4791da177e4SLinus Torvalds }; 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds struct proto_ops inet6_dgram_ops = { 4821da177e4SLinus Torvalds .family = PF_INET6, 4831da177e4SLinus Torvalds .owner = THIS_MODULE, 4841da177e4SLinus Torvalds .release = inet6_release, 4851da177e4SLinus Torvalds .bind = inet6_bind, 4861da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 4871da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 4881da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 4891da177e4SLinus Torvalds .getname = inet6_getname, 4901da177e4SLinus Torvalds .poll = udp_poll, /* ok */ 4911da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 4921da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 4931da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 4941da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 4951da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 4961da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 4971da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 4981da177e4SLinus Torvalds .mmap = sock_no_mmap, 4991da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 5001da177e4SLinus Torvalds }; 5011da177e4SLinus Torvalds 5021da177e4SLinus Torvalds static struct net_proto_family inet6_family_ops = { 5031da177e4SLinus Torvalds .family = PF_INET6, 5041da177e4SLinus Torvalds .create = inet6_create, 5051da177e4SLinus Torvalds .owner = THIS_MODULE, 5061da177e4SLinus Torvalds }; 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 5091da177e4SLinus Torvalds extern void ipv6_sysctl_register(void); 5101da177e4SLinus Torvalds extern void ipv6_sysctl_unregister(void); 5111da177e4SLinus Torvalds #endif 5121da177e4SLinus Torvalds 5131da177e4SLinus Torvalds /* Same as inet6_dgram_ops, sans udp_poll. */ 5141da177e4SLinus Torvalds static struct proto_ops inet6_sockraw_ops = { 5151da177e4SLinus Torvalds .family = PF_INET6, 5161da177e4SLinus Torvalds .owner = THIS_MODULE, 5171da177e4SLinus Torvalds .release = inet6_release, 5181da177e4SLinus Torvalds .bind = inet6_bind, 5191da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 5201da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 5211da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 5221da177e4SLinus Torvalds .getname = inet6_getname, 5231da177e4SLinus Torvalds .poll = datagram_poll, /* ok */ 5241da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 5251da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 5261da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 5271da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5281da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5291da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 5301da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 5311da177e4SLinus Torvalds .mmap = sock_no_mmap, 5321da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 5331da177e4SLinus Torvalds }; 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds static struct inet_protosw rawv6_protosw = { 5361da177e4SLinus Torvalds .type = SOCK_RAW, 5371da177e4SLinus Torvalds .protocol = IPPROTO_IP, /* wild card */ 5381da177e4SLinus Torvalds .prot = &rawv6_prot, 5391da177e4SLinus Torvalds .ops = &inet6_sockraw_ops, 5401da177e4SLinus Torvalds .capability = CAP_NET_RAW, 5411da177e4SLinus Torvalds .no_check = UDP_CSUM_DEFAULT, 5421da177e4SLinus Torvalds .flags = INET_PROTOSW_REUSE, 5431da177e4SLinus Torvalds }; 5441da177e4SLinus Torvalds 5451da177e4SLinus Torvalds void 5461da177e4SLinus Torvalds inet6_register_protosw(struct inet_protosw *p) 5471da177e4SLinus Torvalds { 5481da177e4SLinus Torvalds struct list_head *lh; 5491da177e4SLinus Torvalds struct inet_protosw *answer; 5501da177e4SLinus Torvalds int protocol = p->protocol; 5511da177e4SLinus Torvalds struct list_head *last_perm; 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 5541da177e4SLinus Torvalds 5551da177e4SLinus Torvalds if (p->type >= SOCK_MAX) 5561da177e4SLinus Torvalds goto out_illegal; 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds /* If we are trying to override a permanent protocol, bail. */ 5591da177e4SLinus Torvalds answer = NULL; 5601da177e4SLinus Torvalds last_perm = &inetsw6[p->type]; 5611da177e4SLinus Torvalds list_for_each(lh, &inetsw6[p->type]) { 5621da177e4SLinus Torvalds answer = list_entry(lh, struct inet_protosw, list); 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds /* Check only the non-wild match. */ 5651da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & answer->flags) { 5661da177e4SLinus Torvalds if (protocol == answer->protocol) 5671da177e4SLinus Torvalds break; 5681da177e4SLinus Torvalds last_perm = lh; 5691da177e4SLinus Torvalds } 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds answer = NULL; 5721da177e4SLinus Torvalds } 5731da177e4SLinus Torvalds if (answer) 5741da177e4SLinus Torvalds goto out_permanent; 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvalds /* Add the new entry after the last permanent entry if any, so that 5771da177e4SLinus Torvalds * the new entry does not override a permanent entry when matched with 5781da177e4SLinus Torvalds * a wild-card protocol. But it is allowed to override any existing 5791da177e4SLinus Torvalds * non-permanent entry. This means that when we remove this entry, the 5801da177e4SLinus Torvalds * system automatically returns to the old behavior. 5811da177e4SLinus Torvalds */ 5821da177e4SLinus Torvalds list_add_rcu(&p->list, last_perm); 5831da177e4SLinus Torvalds out: 5841da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 5851da177e4SLinus Torvalds return; 5861da177e4SLinus Torvalds 5871da177e4SLinus Torvalds out_permanent: 5881da177e4SLinus Torvalds printk(KERN_ERR "Attempt to override permanent protocol %d.\n", 5891da177e4SLinus Torvalds protocol); 5901da177e4SLinus Torvalds goto out; 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvalds out_illegal: 5931da177e4SLinus Torvalds printk(KERN_ERR 5941da177e4SLinus Torvalds "Ignoring attempt to register invalid socket type %d.\n", 5951da177e4SLinus Torvalds p->type); 5961da177e4SLinus Torvalds goto out; 5971da177e4SLinus Torvalds } 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds void 6001da177e4SLinus Torvalds inet6_unregister_protosw(struct inet_protosw *p) 6011da177e4SLinus Torvalds { 6021da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & p->flags) { 6031da177e4SLinus Torvalds printk(KERN_ERR 6041da177e4SLinus Torvalds "Attempt to unregister permanent protocol %d.\n", 6051da177e4SLinus Torvalds p->protocol); 6061da177e4SLinus Torvalds } else { 6071da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 6081da177e4SLinus Torvalds list_del_rcu(&p->list); 6091da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 6101da177e4SLinus Torvalds 6111da177e4SLinus Torvalds synchronize_net(); 6121da177e4SLinus Torvalds } 6131da177e4SLinus Torvalds } 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds int 6161da177e4SLinus Torvalds snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign) 6171da177e4SLinus Torvalds { 6181da177e4SLinus Torvalds if (ptr == NULL) 6191da177e4SLinus Torvalds return -EINVAL; 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds ptr[0] = __alloc_percpu(mibsize, mibalign); 6221da177e4SLinus Torvalds if (!ptr[0]) 6231da177e4SLinus Torvalds goto err0; 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds ptr[1] = __alloc_percpu(mibsize, mibalign); 6261da177e4SLinus Torvalds if (!ptr[1]) 6271da177e4SLinus Torvalds goto err1; 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds return 0; 6301da177e4SLinus Torvalds 6311da177e4SLinus Torvalds err1: 6321da177e4SLinus Torvalds free_percpu(ptr[0]); 6331da177e4SLinus Torvalds ptr[0] = NULL; 6341da177e4SLinus Torvalds err0: 6351da177e4SLinus Torvalds return -ENOMEM; 6361da177e4SLinus Torvalds } 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds void 6391da177e4SLinus Torvalds snmp6_mib_free(void *ptr[2]) 6401da177e4SLinus Torvalds { 6411da177e4SLinus Torvalds if (ptr == NULL) 6421da177e4SLinus Torvalds return; 6431da177e4SLinus Torvalds if (ptr[0]) 6441da177e4SLinus Torvalds free_percpu(ptr[0]); 6451da177e4SLinus Torvalds if (ptr[1]) 6461da177e4SLinus Torvalds free_percpu(ptr[1]); 6471da177e4SLinus Torvalds ptr[0] = ptr[1] = NULL; 6481da177e4SLinus Torvalds } 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds static int __init init_ipv6_mibs(void) 6511da177e4SLinus Torvalds { 6521da177e4SLinus Torvalds if (snmp6_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib), 6531da177e4SLinus Torvalds __alignof__(struct ipstats_mib)) < 0) 6541da177e4SLinus Torvalds goto err_ip_mib; 6551da177e4SLinus Torvalds if (snmp6_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib), 6561da177e4SLinus Torvalds __alignof__(struct icmpv6_mib)) < 0) 6571da177e4SLinus Torvalds goto err_icmp_mib; 6581da177e4SLinus Torvalds if (snmp6_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib), 6591da177e4SLinus Torvalds __alignof__(struct udp_mib)) < 0) 6601da177e4SLinus Torvalds goto err_udp_mib; 6611da177e4SLinus Torvalds return 0; 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds err_udp_mib: 6641da177e4SLinus Torvalds snmp6_mib_free((void **)icmpv6_statistics); 6651da177e4SLinus Torvalds err_icmp_mib: 6661da177e4SLinus Torvalds snmp6_mib_free((void **)ipv6_statistics); 6671da177e4SLinus Torvalds err_ip_mib: 6681da177e4SLinus Torvalds return -ENOMEM; 6691da177e4SLinus Torvalds 6701da177e4SLinus Torvalds } 6711da177e4SLinus Torvalds 6721da177e4SLinus Torvalds static void cleanup_ipv6_mibs(void) 6731da177e4SLinus Torvalds { 6741da177e4SLinus Torvalds snmp6_mib_free((void **)ipv6_statistics); 6751da177e4SLinus Torvalds snmp6_mib_free((void **)icmpv6_statistics); 6761da177e4SLinus Torvalds snmp6_mib_free((void **)udp_stats_in6); 6771da177e4SLinus Torvalds } 6781da177e4SLinus Torvalds 6791da177e4SLinus Torvalds extern int ipv6_misc_proc_init(void); 6801da177e4SLinus Torvalds 6811da177e4SLinus Torvalds static int __init inet6_init(void) 6821da177e4SLinus Torvalds { 6831da177e4SLinus Torvalds struct sk_buff *dummy_skb; 6841da177e4SLinus Torvalds struct list_head *r; 6851da177e4SLinus Torvalds int err; 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds #ifdef MODULE 6881da177e4SLinus Torvalds #if 0 /* FIXME --RR */ 6891da177e4SLinus Torvalds if (!mod_member_present(&__this_module, can_unload)) 6901da177e4SLinus Torvalds return -EINVAL; 6911da177e4SLinus Torvalds 6921da177e4SLinus Torvalds __this_module.can_unload = &ipv6_unload; 6931da177e4SLinus Torvalds #endif 6941da177e4SLinus Torvalds #endif 6951da177e4SLinus Torvalds 6961da177e4SLinus Torvalds if (sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)) { 6971da177e4SLinus Torvalds printk(KERN_CRIT "inet6_proto_init: size fault\n"); 6981da177e4SLinus Torvalds return -EINVAL; 6991da177e4SLinus Torvalds } 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds err = proto_register(&tcpv6_prot, 1); 7021da177e4SLinus Torvalds if (err) 7031da177e4SLinus Torvalds goto out; 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds err = proto_register(&udpv6_prot, 1); 7061da177e4SLinus Torvalds if (err) 7071da177e4SLinus Torvalds goto out_unregister_tcp_proto; 7081da177e4SLinus Torvalds 7091da177e4SLinus Torvalds err = proto_register(&rawv6_prot, 1); 7101da177e4SLinus Torvalds if (err) 7111da177e4SLinus Torvalds goto out_unregister_udp_proto; 7121da177e4SLinus Torvalds 7131da177e4SLinus Torvalds 7141da177e4SLinus Torvalds /* Register the socket-side information for inet6_create. */ 7151da177e4SLinus Torvalds for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) 7161da177e4SLinus Torvalds INIT_LIST_HEAD(r); 7171da177e4SLinus Torvalds 7181da177e4SLinus Torvalds /* We MUST register RAW sockets before we create the ICMP6, 7191da177e4SLinus Torvalds * IGMP6, or NDISC control sockets. 7201da177e4SLinus Torvalds */ 7211da177e4SLinus Torvalds inet6_register_protosw(&rawv6_protosw); 7221da177e4SLinus Torvalds 7231da177e4SLinus Torvalds /* Register the family here so that the init calls below will 7241da177e4SLinus Torvalds * be able to create sockets. (?? is this dangerous ??) 7251da177e4SLinus Torvalds */ 7261da177e4SLinus Torvalds (void) sock_register(&inet6_family_ops); 7271da177e4SLinus Torvalds 7281da177e4SLinus Torvalds /* Initialise ipv6 mibs */ 7291da177e4SLinus Torvalds err = init_ipv6_mibs(); 7301da177e4SLinus Torvalds if (err) 7311da177e4SLinus Torvalds goto out_unregister_raw_proto; 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds /* 7341da177e4SLinus Torvalds * ipngwg API draft makes clear that the correct semantics 7351da177e4SLinus Torvalds * for TCP and UDP is to consider one TCP and UDP instance 7361da177e4SLinus Torvalds * in a host availiable by both INET and INET6 APIs and 7371da177e4SLinus Torvalds * able to communicate via both network protocols. 7381da177e4SLinus Torvalds */ 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 7411da177e4SLinus Torvalds ipv6_sysctl_register(); 7421da177e4SLinus Torvalds #endif 7431da177e4SLinus Torvalds err = icmpv6_init(&inet6_family_ops); 7441da177e4SLinus Torvalds if (err) 7451da177e4SLinus Torvalds goto icmp_fail; 7461da177e4SLinus Torvalds err = ndisc_init(&inet6_family_ops); 7471da177e4SLinus Torvalds if (err) 7481da177e4SLinus Torvalds goto ndisc_fail; 7491da177e4SLinus Torvalds err = igmp6_init(&inet6_family_ops); 7501da177e4SLinus Torvalds if (err) 7511da177e4SLinus Torvalds goto igmp_fail; 7522cc7d573SHarald Welte err = ipv6_netfilter_init(); 7532cc7d573SHarald Welte if (err) 7542cc7d573SHarald Welte goto netfilter_fail; 7551da177e4SLinus Torvalds /* Create /proc/foo6 entries. */ 7561da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 7571da177e4SLinus Torvalds err = -ENOMEM; 7581da177e4SLinus Torvalds if (raw6_proc_init()) 7591da177e4SLinus Torvalds goto proc_raw6_fail; 7601da177e4SLinus Torvalds if (tcp6_proc_init()) 7611da177e4SLinus Torvalds goto proc_tcp6_fail; 7621da177e4SLinus Torvalds if (udp6_proc_init()) 7631da177e4SLinus Torvalds goto proc_udp6_fail; 7641da177e4SLinus Torvalds if (ipv6_misc_proc_init()) 7651da177e4SLinus Torvalds goto proc_misc6_fail; 7661da177e4SLinus Torvalds 7671da177e4SLinus Torvalds if (ac6_proc_init()) 7681da177e4SLinus Torvalds goto proc_anycast6_fail; 7691da177e4SLinus Torvalds if (if6_proc_init()) 7701da177e4SLinus Torvalds goto proc_if6_fail; 7711da177e4SLinus Torvalds #endif 7721da177e4SLinus Torvalds ip6_route_init(); 7731da177e4SLinus Torvalds ip6_flowlabel_init(); 7741da177e4SLinus Torvalds err = addrconf_init(); 7751da177e4SLinus Torvalds if (err) 7761da177e4SLinus Torvalds goto addrconf_fail; 7771da177e4SLinus Torvalds sit_init(); 7781da177e4SLinus Torvalds 7791da177e4SLinus Torvalds /* Init v6 extension headers. */ 7801da177e4SLinus Torvalds ipv6_rthdr_init(); 7811da177e4SLinus Torvalds ipv6_frag_init(); 7821da177e4SLinus Torvalds ipv6_nodata_init(); 7831da177e4SLinus Torvalds ipv6_destopt_init(); 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds /* Init v6 transport protocols. */ 7861da177e4SLinus Torvalds udpv6_init(); 7871da177e4SLinus Torvalds tcpv6_init(); 788e2ed4052SHerbert Xu 789e2ed4052SHerbert Xu ipv6_packet_init(); 7901da177e4SLinus Torvalds err = 0; 7911da177e4SLinus Torvalds out: 7921da177e4SLinus Torvalds return err; 7931da177e4SLinus Torvalds 7941da177e4SLinus Torvalds addrconf_fail: 7951da177e4SLinus Torvalds ip6_flowlabel_cleanup(); 7961da177e4SLinus Torvalds ip6_route_cleanup(); 7971da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 7981da177e4SLinus Torvalds if6_proc_exit(); 7991da177e4SLinus Torvalds proc_if6_fail: 8001da177e4SLinus Torvalds ac6_proc_exit(); 8011da177e4SLinus Torvalds proc_anycast6_fail: 8021da177e4SLinus Torvalds ipv6_misc_proc_exit(); 8031da177e4SLinus Torvalds proc_misc6_fail: 8041da177e4SLinus Torvalds udp6_proc_exit(); 8051da177e4SLinus Torvalds proc_udp6_fail: 8061da177e4SLinus Torvalds tcp6_proc_exit(); 8071da177e4SLinus Torvalds proc_tcp6_fail: 8081da177e4SLinus Torvalds raw6_proc_exit(); 8091da177e4SLinus Torvalds proc_raw6_fail: 8101da177e4SLinus Torvalds #endif 8112cc7d573SHarald Welte ipv6_netfilter_fini(); 8122cc7d573SHarald Welte netfilter_fail: 8131da177e4SLinus Torvalds igmp6_cleanup(); 8141da177e4SLinus Torvalds igmp_fail: 8151da177e4SLinus Torvalds ndisc_cleanup(); 8161da177e4SLinus Torvalds ndisc_fail: 8171da177e4SLinus Torvalds icmpv6_cleanup(); 8181da177e4SLinus Torvalds icmp_fail: 8191da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 8201da177e4SLinus Torvalds ipv6_sysctl_unregister(); 8211da177e4SLinus Torvalds #endif 8221da177e4SLinus Torvalds cleanup_ipv6_mibs(); 8231da177e4SLinus Torvalds out_unregister_raw_proto: 8241da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 8251da177e4SLinus Torvalds out_unregister_udp_proto: 8261da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 8271da177e4SLinus Torvalds out_unregister_tcp_proto: 8281da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 8291da177e4SLinus Torvalds goto out; 8301da177e4SLinus Torvalds } 8311da177e4SLinus Torvalds module_init(inet6_init); 8321da177e4SLinus Torvalds 8331da177e4SLinus Torvalds static void __exit inet6_exit(void) 8341da177e4SLinus Torvalds { 8351da177e4SLinus Torvalds /* First of all disallow new sockets creation. */ 8361da177e4SLinus Torvalds sock_unregister(PF_INET6); 8371da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 8381da177e4SLinus Torvalds if6_proc_exit(); 8391da177e4SLinus Torvalds ac6_proc_exit(); 8401da177e4SLinus Torvalds ipv6_misc_proc_exit(); 8411da177e4SLinus Torvalds udp6_proc_exit(); 8421da177e4SLinus Torvalds tcp6_proc_exit(); 8431da177e4SLinus Torvalds raw6_proc_exit(); 8441da177e4SLinus Torvalds #endif 8451da177e4SLinus Torvalds /* Cleanup code parts. */ 8461da177e4SLinus Torvalds sit_cleanup(); 8471da177e4SLinus Torvalds ip6_flowlabel_cleanup(); 8481da177e4SLinus Torvalds addrconf_cleanup(); 8491da177e4SLinus Torvalds ip6_route_cleanup(); 8501da177e4SLinus Torvalds ipv6_packet_cleanup(); 8511da177e4SLinus Torvalds igmp6_cleanup(); 8522cc7d573SHarald Welte ipv6_netfilter_fini(); 8531da177e4SLinus Torvalds ndisc_cleanup(); 8541da177e4SLinus Torvalds icmpv6_cleanup(); 8551da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 8561da177e4SLinus Torvalds ipv6_sysctl_unregister(); 8571da177e4SLinus Torvalds #endif 8581da177e4SLinus Torvalds cleanup_ipv6_mibs(); 8591da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 8601da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 8611da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 8621da177e4SLinus Torvalds } 8631da177e4SLinus Torvalds module_exit(inet6_exit); 8641da177e4SLinus Torvalds 8651da177e4SLinus Torvalds MODULE_ALIAS_NETPROTO(PF_INET6); 866