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> 254fc268d2SRandy Dunlap #include <linux/capability.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> 52ba4e58ecSGerrit Renker #include <net/udplite.h> 531da177e4SLinus Torvalds #include <net/tcp.h> 541da177e4SLinus Torvalds #include <net/ipip.h> 551da177e4SLinus Torvalds #include <net/protocol.h> 561da177e4SLinus Torvalds #include <net/inet_common.h> 571da177e4SLinus Torvalds #include <net/transp_v6.h> 581da177e4SLinus Torvalds #include <net/ip6_route.h> 591da177e4SLinus Torvalds #include <net/addrconf.h> 601da177e4SLinus Torvalds #ifdef CONFIG_IPV6_TUNNEL 611da177e4SLinus Torvalds #include <net/ip6_tunnel.h> 621da177e4SLinus Torvalds #endif 632c8d7ca0SNoriaki TAKAMIYA #ifdef CONFIG_IPV6_MIP6 642c8d7ca0SNoriaki TAKAMIYA #include <net/mip6.h> 652c8d7ca0SNoriaki TAKAMIYA #endif 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds #include <asm/uaccess.h> 681da177e4SLinus Torvalds #include <asm/system.h> 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds MODULE_AUTHOR("Cast of dozens"); 711da177e4SLinus Torvalds MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); 721da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 731da177e4SLinus Torvalds 74ab32ea5dSBrian Haley int sysctl_ipv6_bindv6only __read_mostly; 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds /* The inetsw table contains everything that inet_create needs to 771da177e4SLinus Torvalds * build a new socket. 781da177e4SLinus Torvalds */ 791da177e4SLinus Torvalds static struct list_head inetsw6[SOCK_MAX]; 801da177e4SLinus Torvalds static DEFINE_SPINLOCK(inetsw6_lock); 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) 831da177e4SLinus Torvalds { 841da177e4SLinus Torvalds const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds return (struct ipv6_pinfo *)(((u8 *)sk) + offset); 871da177e4SLinus Torvalds } 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds static int inet6_create(struct socket *sock, int protocol) 901da177e4SLinus Torvalds { 911da177e4SLinus Torvalds struct inet_sock *inet; 921da177e4SLinus Torvalds struct ipv6_pinfo *np; 931da177e4SLinus Torvalds struct sock *sk; 941da177e4SLinus Torvalds struct list_head *p; 951da177e4SLinus Torvalds struct inet_protosw *answer; 961da177e4SLinus Torvalds struct proto *answer_prot; 971da177e4SLinus Torvalds unsigned char answer_flags; 981da177e4SLinus Torvalds char answer_no_check; 99af1afe86SYOSHIFUJI Hideaki int try_loading_module = 0; 100af1afe86SYOSHIFUJI Hideaki int err; 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvalds /* Look for the requested type/protocol pair. */ 1031da177e4SLinus Torvalds answer = NULL; 104af1afe86SYOSHIFUJI Hideaki lookup_protocol: 105af1afe86SYOSHIFUJI Hideaki err = -ESOCKTNOSUPPORT; 1061da177e4SLinus Torvalds rcu_read_lock(); 1071da177e4SLinus Torvalds list_for_each_rcu(p, &inetsw6[sock->type]) { 1081da177e4SLinus Torvalds answer = list_entry(p, struct inet_protosw, list); 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds /* Check the non-wild match. */ 1111da177e4SLinus Torvalds if (protocol == answer->protocol) { 1121da177e4SLinus Torvalds if (protocol != IPPROTO_IP) 1131da177e4SLinus Torvalds break; 1141da177e4SLinus Torvalds } else { 1151da177e4SLinus Torvalds /* Check for the two wild cases. */ 1161da177e4SLinus Torvalds if (IPPROTO_IP == protocol) { 1171da177e4SLinus Torvalds protocol = answer->protocol; 1181da177e4SLinus Torvalds break; 1191da177e4SLinus Torvalds } 1201da177e4SLinus Torvalds if (IPPROTO_IP == answer->protocol) 1211da177e4SLinus Torvalds break; 1221da177e4SLinus Torvalds } 123af1afe86SYOSHIFUJI Hideaki err = -EPROTONOSUPPORT; 1241da177e4SLinus Torvalds answer = NULL; 1251da177e4SLinus Torvalds } 1261da177e4SLinus Torvalds 127af1afe86SYOSHIFUJI Hideaki if (!answer) { 128af1afe86SYOSHIFUJI Hideaki if (try_loading_module < 2) { 129af1afe86SYOSHIFUJI Hideaki rcu_read_unlock(); 130af1afe86SYOSHIFUJI Hideaki /* 131af1afe86SYOSHIFUJI Hideaki * Be more specific, e.g. net-pf-10-proto-132-type-1 132af1afe86SYOSHIFUJI Hideaki * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) 133af1afe86SYOSHIFUJI Hideaki */ 134af1afe86SYOSHIFUJI Hideaki if (++try_loading_module == 1) 135af1afe86SYOSHIFUJI Hideaki request_module("net-pf-%d-proto-%d-type-%d", 136af1afe86SYOSHIFUJI Hideaki PF_INET6, protocol, sock->type); 137af1afe86SYOSHIFUJI Hideaki /* 138af1afe86SYOSHIFUJI Hideaki * Fall back to generic, e.g. net-pf-10-proto-132 139af1afe86SYOSHIFUJI Hideaki * (net-pf-PF_INET6-proto-IPPROTO_SCTP) 140af1afe86SYOSHIFUJI Hideaki */ 141af1afe86SYOSHIFUJI Hideaki else 142af1afe86SYOSHIFUJI Hideaki request_module("net-pf-%d-proto-%d", 143af1afe86SYOSHIFUJI Hideaki PF_INET6, protocol); 144af1afe86SYOSHIFUJI Hideaki goto lookup_protocol; 145af1afe86SYOSHIFUJI Hideaki } else 1461da177e4SLinus Torvalds goto out_rcu_unlock; 147af1afe86SYOSHIFUJI Hideaki } 148af1afe86SYOSHIFUJI Hideaki 149af1afe86SYOSHIFUJI Hideaki err = -EPERM; 1501da177e4SLinus Torvalds if (answer->capability > 0 && !capable(answer->capability)) 1511da177e4SLinus Torvalds goto out_rcu_unlock; 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds sock->ops = answer->ops; 1541da177e4SLinus Torvalds answer_prot = answer->prot; 1551da177e4SLinus Torvalds answer_no_check = answer->no_check; 1561da177e4SLinus Torvalds answer_flags = answer->flags; 1571da177e4SLinus Torvalds rcu_read_unlock(); 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds BUG_TRAP(answer_prot->slab != NULL); 1601da177e4SLinus Torvalds 161af1afe86SYOSHIFUJI Hideaki err = -ENOBUFS; 1621da177e4SLinus Torvalds sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1); 1631da177e4SLinus Torvalds if (sk == NULL) 1641da177e4SLinus Torvalds goto out; 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds sock_init_data(sock, sk); 1671da177e4SLinus Torvalds 168af1afe86SYOSHIFUJI Hideaki err = 0; 1691da177e4SLinus Torvalds sk->sk_no_check = answer_no_check; 1701da177e4SLinus Torvalds if (INET_PROTOSW_REUSE & answer_flags) 1711da177e4SLinus Torvalds sk->sk_reuse = 1; 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds inet = inet_sk(sk); 174469de9b9SPaul Moore inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds if (SOCK_RAW == sock->type) { 1771da177e4SLinus Torvalds inet->num = protocol; 1781da177e4SLinus Torvalds if (IPPROTO_RAW == protocol) 1791da177e4SLinus Torvalds inet->hdrincl = 1; 1801da177e4SLinus Torvalds } 1811da177e4SLinus Torvalds 182e6848976SArnaldo Carvalho de Melo sk->sk_destruct = inet_sock_destruct; 1831da177e4SLinus Torvalds sk->sk_family = PF_INET6; 1841da177e4SLinus Torvalds sk->sk_protocol = protocol; 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds sk->sk_backlog_rcv = answer->prot->backlog_rcv; 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); 1891da177e4SLinus Torvalds np->hop_limit = -1; 1901da177e4SLinus Torvalds np->mcast_hops = -1; 1911da177e4SLinus Torvalds np->mc_loop = 1; 1921da177e4SLinus Torvalds np->pmtudisc = IPV6_PMTUDISC_WANT; 1931da177e4SLinus Torvalds np->ipv6only = sysctl_ipv6_bindv6only; 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds /* Init the ipv4 part of the socket since we can have sockets 1961da177e4SLinus Torvalds * using v6 API for ipv4. 1971da177e4SLinus Torvalds */ 1981da177e4SLinus Torvalds inet->uc_ttl = -1; 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds inet->mc_loop = 1; 2011da177e4SLinus Torvalds inet->mc_ttl = 1; 2021da177e4SLinus Torvalds inet->mc_index = 0; 2031da177e4SLinus Torvalds inet->mc_list = NULL; 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds if (ipv4_config.no_pmtu_disc) 2061da177e4SLinus Torvalds inet->pmtudisc = IP_PMTUDISC_DONT; 2071da177e4SLinus Torvalds else 2081da177e4SLinus Torvalds inet->pmtudisc = IP_PMTUDISC_WANT; 209e6848976SArnaldo Carvalho de Melo /* 210e6848976SArnaldo Carvalho de Melo * Increment only the relevant sk_prot->socks debug field, this changes 211e6848976SArnaldo Carvalho de Melo * the previous behaviour of incrementing both the equivalent to 212e6848976SArnaldo Carvalho de Melo * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. 213e6848976SArnaldo Carvalho de Melo * 214e6848976SArnaldo Carvalho de Melo * This allows better debug granularity as we'll know exactly how many 215e6848976SArnaldo Carvalho de Melo * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 216e6848976SArnaldo Carvalho de Melo * transport protocol socks. -acme 217e6848976SArnaldo Carvalho de Melo */ 218e6848976SArnaldo Carvalho de Melo sk_refcnt_debug_inc(sk); 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds if (inet->num) { 2211da177e4SLinus Torvalds /* It assumes that any protocol which allows 2221da177e4SLinus Torvalds * the user to assign a number at socket 2231da177e4SLinus Torvalds * creation time automatically shares. 2241da177e4SLinus Torvalds */ 225e69a4adcSAl Viro inet->sport = htons(inet->num); 2261da177e4SLinus Torvalds sk->sk_prot->hash(sk); 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds if (sk->sk_prot->init) { 229af1afe86SYOSHIFUJI Hideaki err = sk->sk_prot->init(sk); 230af1afe86SYOSHIFUJI Hideaki if (err) { 2311da177e4SLinus Torvalds sk_common_release(sk); 2321da177e4SLinus Torvalds goto out; 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds out: 236af1afe86SYOSHIFUJI Hideaki return err; 2371da177e4SLinus Torvalds out_rcu_unlock: 2381da177e4SLinus Torvalds rcu_read_unlock(); 2391da177e4SLinus Torvalds goto out; 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds /* bind for INET6 API */ 2441da177e4SLinus Torvalds int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 2451da177e4SLinus Torvalds { 2461da177e4SLinus Torvalds struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; 2471da177e4SLinus Torvalds struct sock *sk = sock->sk; 2481da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 2491da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 250fd683222SAl Viro __be32 v4addr = 0; 2511da177e4SLinus Torvalds unsigned short snum; 2521da177e4SLinus Torvalds int addr_type = 0; 2531da177e4SLinus Torvalds int err = 0; 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds /* If the socket has its own bind function then use it. */ 2561da177e4SLinus Torvalds if (sk->sk_prot->bind) 2571da177e4SLinus Torvalds return sk->sk_prot->bind(sk, uaddr, addr_len); 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 2601da177e4SLinus Torvalds return -EINVAL; 2611da177e4SLinus Torvalds addr_type = ipv6_addr_type(&addr->sin6_addr); 2621da177e4SLinus Torvalds if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) 2631da177e4SLinus Torvalds return -EINVAL; 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds snum = ntohs(addr->sin6_port); 2661da177e4SLinus Torvalds if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) 2671da177e4SLinus Torvalds return -EACCES; 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds lock_sock(sk); 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds /* Check these errors (active socket, double bind). */ 2721da177e4SLinus Torvalds if (sk->sk_state != TCP_CLOSE || inet->num) { 2731da177e4SLinus Torvalds err = -EINVAL; 2741da177e4SLinus Torvalds goto out; 2751da177e4SLinus Torvalds } 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds /* Check if the address belongs to the host. */ 2781da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_MAPPED) { 2791da177e4SLinus Torvalds v4addr = addr->sin6_addr.s6_addr32[3]; 2801da177e4SLinus Torvalds if (inet_addr_type(v4addr) != RTN_LOCAL) { 2811da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 2821da177e4SLinus Torvalds goto out; 2831da177e4SLinus Torvalds } 2841da177e4SLinus Torvalds } else { 2851da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) { 2861da177e4SLinus Torvalds struct net_device *dev = NULL; 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds if (addr_type & IPV6_ADDR_LINKLOCAL) { 2891da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 2901da177e4SLinus Torvalds addr->sin6_scope_id) { 2911da177e4SLinus Torvalds /* Override any existing binding, if another one 2921da177e4SLinus Torvalds * is supplied by user. 2931da177e4SLinus Torvalds */ 2941da177e4SLinus Torvalds sk->sk_bound_dev_if = addr->sin6_scope_id; 2951da177e4SLinus Torvalds } 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds /* Binding to link-local address requires an interface */ 2981da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) { 2991da177e4SLinus Torvalds err = -EINVAL; 3001da177e4SLinus Torvalds goto out; 3011da177e4SLinus Torvalds } 3021da177e4SLinus Torvalds dev = dev_get_by_index(sk->sk_bound_dev_if); 3031da177e4SLinus Torvalds if (!dev) { 3041da177e4SLinus Torvalds err = -ENODEV; 3051da177e4SLinus Torvalds goto out; 3061da177e4SLinus Torvalds } 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds /* ipv4 addr of the socket is invalid. Only the 3101da177e4SLinus Torvalds * unspecified and mapped address have a v4 equivalent. 3111da177e4SLinus Torvalds */ 3121da177e4SLinus Torvalds v4addr = LOOPBACK4_IPV6; 3131da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) { 3141da177e4SLinus Torvalds if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) { 3151da177e4SLinus Torvalds if (dev) 3161da177e4SLinus Torvalds dev_put(dev); 3171da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 3181da177e4SLinus Torvalds goto out; 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds } 3211da177e4SLinus Torvalds if (dev) 3221da177e4SLinus Torvalds dev_put(dev); 3231da177e4SLinus Torvalds } 3241da177e4SLinus Torvalds } 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds inet->rcv_saddr = v4addr; 3271da177e4SLinus Torvalds inet->saddr = v4addr; 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) 3321da177e4SLinus Torvalds ipv6_addr_copy(&np->saddr, &addr->sin6_addr); 3331da177e4SLinus Torvalds 3341da177e4SLinus Torvalds /* Make sure we are allowed to bind here. */ 3351da177e4SLinus Torvalds if (sk->sk_prot->get_port(sk, snum)) { 3361da177e4SLinus Torvalds inet_reset_saddr(sk); 3371da177e4SLinus Torvalds err = -EADDRINUSE; 3381da177e4SLinus Torvalds goto out; 3391da177e4SLinus Torvalds } 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) 3421da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDADDR_LOCK; 3431da177e4SLinus Torvalds if (snum) 3441da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDPORT_LOCK; 345e69a4adcSAl Viro inet->sport = htons(inet->num); 3461da177e4SLinus Torvalds inet->dport = 0; 3471da177e4SLinus Torvalds inet->daddr = 0; 3481da177e4SLinus Torvalds out: 3491da177e4SLinus Torvalds release_sock(sk); 3501da177e4SLinus Torvalds return err; 3511da177e4SLinus Torvalds } 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds int inet6_release(struct socket *sock) 3541da177e4SLinus Torvalds { 3551da177e4SLinus Torvalds struct sock *sk = sock->sk; 3561da177e4SLinus Torvalds 3571da177e4SLinus Torvalds if (sk == NULL) 3581da177e4SLinus Torvalds return -EINVAL; 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds /* Free mc lists */ 3611da177e4SLinus Torvalds ipv6_sock_mc_close(sk); 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds /* Free ac lists */ 3641da177e4SLinus Torvalds ipv6_sock_ac_close(sk); 3651da177e4SLinus Torvalds 3661da177e4SLinus Torvalds return inet_release(sock); 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds int inet6_destroy_sock(struct sock *sk) 3701da177e4SLinus Torvalds { 3711da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 3721da177e4SLinus Torvalds struct sk_buff *skb; 3731da177e4SLinus Torvalds struct ipv6_txoptions *opt; 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds /* Release rx options */ 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds if ((skb = xchg(&np->pktoptions, NULL)) != NULL) 3781da177e4SLinus Torvalds kfree_skb(skb); 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds /* Free flowlabels */ 3811da177e4SLinus Torvalds fl6_free_socklist(sk); 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds /* Free tx options */ 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds if ((opt = xchg(&np->opt, NULL)) != NULL) 3861da177e4SLinus Torvalds sock_kfree_s(sk, opt, opt->tot_len); 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds return 0; 3891da177e4SLinus Torvalds } 3901da177e4SLinus Torvalds 3913cf3dc6cSArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(inet6_destroy_sock); 3923cf3dc6cSArnaldo Carvalho de Melo 3931da177e4SLinus Torvalds /* 3941da177e4SLinus Torvalds * This does both peername and sockname. 3951da177e4SLinus Torvalds */ 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds int inet6_getname(struct socket *sock, struct sockaddr *uaddr, 3981da177e4SLinus Torvalds int *uaddr_len, int peer) 3991da177e4SLinus Torvalds { 4001da177e4SLinus Torvalds struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; 4011da177e4SLinus Torvalds struct sock *sk = sock->sk; 4021da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 4031da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds sin->sin6_family = AF_INET6; 4061da177e4SLinus Torvalds sin->sin6_flowinfo = 0; 4071da177e4SLinus Torvalds sin->sin6_scope_id = 0; 4081da177e4SLinus Torvalds if (peer) { 4091da177e4SLinus Torvalds if (!inet->dport) 4101da177e4SLinus Torvalds return -ENOTCONN; 4111da177e4SLinus Torvalds if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && 4121da177e4SLinus Torvalds peer == 1) 4131da177e4SLinus Torvalds return -ENOTCONN; 4141da177e4SLinus Torvalds sin->sin6_port = inet->dport; 4151da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->daddr); 4161da177e4SLinus Torvalds if (np->sndflow) 4171da177e4SLinus Torvalds sin->sin6_flowinfo = np->flow_label; 4181da177e4SLinus Torvalds } else { 4191da177e4SLinus Torvalds if (ipv6_addr_any(&np->rcv_saddr)) 4201da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->saddr); 4211da177e4SLinus Torvalds else 4221da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds sin->sin6_port = inet->sport; 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) 4271da177e4SLinus Torvalds sin->sin6_scope_id = sk->sk_bound_dev_if; 4281da177e4SLinus Torvalds *uaddr_len = sizeof(*sin); 4291da177e4SLinus Torvalds return(0); 4301da177e4SLinus Torvalds } 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 4331da177e4SLinus Torvalds { 4341da177e4SLinus Torvalds struct sock *sk = sock->sk; 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds switch(cmd) 4371da177e4SLinus Torvalds { 4381da177e4SLinus Torvalds case SIOCGSTAMP: 4391da177e4SLinus Torvalds return sock_get_timestamp(sk, (struct timeval __user *)arg); 4401da177e4SLinus Torvalds 4411da177e4SLinus Torvalds case SIOCADDRT: 4421da177e4SLinus Torvalds case SIOCDELRT: 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds return(ipv6_route_ioctl(cmd,(void __user *)arg)); 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds case SIOCSIFADDR: 4471da177e4SLinus Torvalds return addrconf_add_ifaddr((void __user *) arg); 4481da177e4SLinus Torvalds case SIOCDIFADDR: 4491da177e4SLinus Torvalds return addrconf_del_ifaddr((void __user *) arg); 4501da177e4SLinus Torvalds case SIOCSIFDSTADDR: 4511da177e4SLinus Torvalds return addrconf_set_dstaddr((void __user *) arg); 4521da177e4SLinus Torvalds default: 453b5e5fa5eSChristoph Hellwig if (!sk->sk_prot->ioctl) 454b5e5fa5eSChristoph Hellwig return -ENOIOCTLCMD; 455b5e5fa5eSChristoph Hellwig return sk->sk_prot->ioctl(sk, cmd, arg); 4561da177e4SLinus Torvalds } 4571da177e4SLinus Torvalds /*NOTREACHED*/ 4581da177e4SLinus Torvalds return(0); 4591da177e4SLinus Torvalds } 4601da177e4SLinus Torvalds 46190ddc4f0SEric Dumazet const struct proto_ops inet6_stream_ops = { 4621da177e4SLinus Torvalds .family = PF_INET6, 4631da177e4SLinus Torvalds .owner = THIS_MODULE, 4641da177e4SLinus Torvalds .release = inet6_release, 4651da177e4SLinus Torvalds .bind = inet6_bind, 4661da177e4SLinus Torvalds .connect = inet_stream_connect, /* ok */ 4671da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 4681da177e4SLinus Torvalds .accept = inet_accept, /* ok */ 4691da177e4SLinus Torvalds .getname = inet6_getname, 4701da177e4SLinus Torvalds .poll = tcp_poll, /* ok */ 4711da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 4721da177e4SLinus Torvalds .listen = inet_listen, /* ok */ 4731da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 4741da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 4751da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 476543d9cfeSArnaldo Carvalho de Melo .sendmsg = inet_sendmsg, /* ok */ 477543d9cfeSArnaldo Carvalho de Melo .recvmsg = sock_common_recvmsg, /* ok */ 478543d9cfeSArnaldo Carvalho de Melo .mmap = sock_no_mmap, 479543d9cfeSArnaldo Carvalho de Melo .sendpage = tcp_sendpage, 4803fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 4813fdadf7dSDmitry Mishin .compat_setsockopt = compat_sock_common_setsockopt, 4823fdadf7dSDmitry Mishin .compat_getsockopt = compat_sock_common_getsockopt, 4833fdadf7dSDmitry Mishin #endif 4841da177e4SLinus Torvalds }; 4851da177e4SLinus Torvalds 48690ddc4f0SEric Dumazet const struct proto_ops inet6_dgram_ops = { 4871da177e4SLinus Torvalds .family = PF_INET6, 4881da177e4SLinus Torvalds .owner = THIS_MODULE, 4891da177e4SLinus Torvalds .release = inet6_release, 4901da177e4SLinus Torvalds .bind = inet6_bind, 4911da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 4921da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 4931da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 4941da177e4SLinus Torvalds .getname = inet6_getname, 4951da177e4SLinus Torvalds .poll = udp_poll, /* ok */ 4961da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 4971da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 4981da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 4991da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5001da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5011da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 5021da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 5031da177e4SLinus Torvalds .mmap = sock_no_mmap, 5041da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 505543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 506543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_sock_common_setsockopt, 507543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_sock_common_getsockopt, 508543d9cfeSArnaldo Carvalho de Melo #endif 5091da177e4SLinus Torvalds }; 5101da177e4SLinus Torvalds 5111da177e4SLinus Torvalds static struct net_proto_family inet6_family_ops = { 5121da177e4SLinus Torvalds .family = PF_INET6, 5131da177e4SLinus Torvalds .create = inet6_create, 5141da177e4SLinus Torvalds .owner = THIS_MODULE, 5151da177e4SLinus Torvalds }; 5161da177e4SLinus Torvalds 5171da177e4SLinus Torvalds /* Same as inet6_dgram_ops, sans udp_poll. */ 51890ddc4f0SEric Dumazet static const struct proto_ops inet6_sockraw_ops = { 5191da177e4SLinus Torvalds .family = PF_INET6, 5201da177e4SLinus Torvalds .owner = THIS_MODULE, 5211da177e4SLinus Torvalds .release = inet6_release, 5221da177e4SLinus Torvalds .bind = inet6_bind, 5231da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 5241da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 5251da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 5261da177e4SLinus Torvalds .getname = inet6_getname, 5271da177e4SLinus Torvalds .poll = datagram_poll, /* ok */ 5281da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 5291da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 5301da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 5311da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5321da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5331da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 5341da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 5351da177e4SLinus Torvalds .mmap = sock_no_mmap, 5361da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 537543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 538543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_sock_common_setsockopt, 539543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_sock_common_getsockopt, 540543d9cfeSArnaldo Carvalho de Melo #endif 5411da177e4SLinus Torvalds }; 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds static struct inet_protosw rawv6_protosw = { 5441da177e4SLinus Torvalds .type = SOCK_RAW, 5451da177e4SLinus Torvalds .protocol = IPPROTO_IP, /* wild card */ 5461da177e4SLinus Torvalds .prot = &rawv6_prot, 5471da177e4SLinus Torvalds .ops = &inet6_sockraw_ops, 5481da177e4SLinus Torvalds .capability = CAP_NET_RAW, 5491da177e4SLinus Torvalds .no_check = UDP_CSUM_DEFAULT, 5501da177e4SLinus Torvalds .flags = INET_PROTOSW_REUSE, 5511da177e4SLinus Torvalds }; 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds void 5541da177e4SLinus Torvalds inet6_register_protosw(struct inet_protosw *p) 5551da177e4SLinus Torvalds { 5561da177e4SLinus Torvalds struct list_head *lh; 5571da177e4SLinus Torvalds struct inet_protosw *answer; 5581da177e4SLinus Torvalds int protocol = p->protocol; 5591da177e4SLinus Torvalds struct list_head *last_perm; 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 5621da177e4SLinus Torvalds 5631da177e4SLinus Torvalds if (p->type >= SOCK_MAX) 5641da177e4SLinus Torvalds goto out_illegal; 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds /* If we are trying to override a permanent protocol, bail. */ 5671da177e4SLinus Torvalds answer = NULL; 5681da177e4SLinus Torvalds last_perm = &inetsw6[p->type]; 5691da177e4SLinus Torvalds list_for_each(lh, &inetsw6[p->type]) { 5701da177e4SLinus Torvalds answer = list_entry(lh, struct inet_protosw, list); 5711da177e4SLinus Torvalds 5721da177e4SLinus Torvalds /* Check only the non-wild match. */ 5731da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & answer->flags) { 5741da177e4SLinus Torvalds if (protocol == answer->protocol) 5751da177e4SLinus Torvalds break; 5761da177e4SLinus Torvalds last_perm = lh; 5771da177e4SLinus Torvalds } 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds answer = NULL; 5801da177e4SLinus Torvalds } 5811da177e4SLinus Torvalds if (answer) 5821da177e4SLinus Torvalds goto out_permanent; 5831da177e4SLinus Torvalds 5841da177e4SLinus Torvalds /* Add the new entry after the last permanent entry if any, so that 5851da177e4SLinus Torvalds * the new entry does not override a permanent entry when matched with 5861da177e4SLinus Torvalds * a wild-card protocol. But it is allowed to override any existing 5871da177e4SLinus Torvalds * non-permanent entry. This means that when we remove this entry, the 5881da177e4SLinus Torvalds * system automatically returns to the old behavior. 5891da177e4SLinus Torvalds */ 5901da177e4SLinus Torvalds list_add_rcu(&p->list, last_perm); 5911da177e4SLinus Torvalds out: 5921da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 5931da177e4SLinus Torvalds return; 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds out_permanent: 5961da177e4SLinus Torvalds printk(KERN_ERR "Attempt to override permanent protocol %d.\n", 5971da177e4SLinus Torvalds protocol); 5981da177e4SLinus Torvalds goto out; 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds out_illegal: 6011da177e4SLinus Torvalds printk(KERN_ERR 6021da177e4SLinus Torvalds "Ignoring attempt to register invalid socket type %d.\n", 6031da177e4SLinus Torvalds p->type); 6041da177e4SLinus Torvalds goto out; 6051da177e4SLinus Torvalds } 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds void 6081da177e4SLinus Torvalds inet6_unregister_protosw(struct inet_protosw *p) 6091da177e4SLinus Torvalds { 6101da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & p->flags) { 6111da177e4SLinus Torvalds printk(KERN_ERR 6121da177e4SLinus Torvalds "Attempt to unregister permanent protocol %d.\n", 6131da177e4SLinus Torvalds p->protocol); 6141da177e4SLinus Torvalds } else { 6151da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 6161da177e4SLinus Torvalds list_del_rcu(&p->list); 6171da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds synchronize_net(); 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds } 6221da177e4SLinus Torvalds 623b9750ce1SArnaldo Carvalho de Melo int inet6_sk_rebuild_header(struct sock *sk) 624b9750ce1SArnaldo Carvalho de Melo { 625b9750ce1SArnaldo Carvalho de Melo int err; 626b9750ce1SArnaldo Carvalho de Melo struct dst_entry *dst; 627b9750ce1SArnaldo Carvalho de Melo struct ipv6_pinfo *np = inet6_sk(sk); 628b9750ce1SArnaldo Carvalho de Melo 629b9750ce1SArnaldo Carvalho de Melo dst = __sk_dst_check(sk, np->dst_cookie); 630b9750ce1SArnaldo Carvalho de Melo 631b9750ce1SArnaldo Carvalho de Melo if (dst == NULL) { 632b9750ce1SArnaldo Carvalho de Melo struct inet_sock *inet = inet_sk(sk); 633b9750ce1SArnaldo Carvalho de Melo struct in6_addr *final_p = NULL, final; 634b9750ce1SArnaldo Carvalho de Melo struct flowi fl; 635b9750ce1SArnaldo Carvalho de Melo 636b9750ce1SArnaldo Carvalho de Melo memset(&fl, 0, sizeof(fl)); 637b9750ce1SArnaldo Carvalho de Melo fl.proto = sk->sk_protocol; 638b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, &np->daddr); 639b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_src, &np->saddr); 640b9750ce1SArnaldo Carvalho de Melo fl.fl6_flowlabel = np->flow_label; 641b9750ce1SArnaldo Carvalho de Melo fl.oif = sk->sk_bound_dev_if; 642b9750ce1SArnaldo Carvalho de Melo fl.fl_ip_dport = inet->dport; 643b9750ce1SArnaldo Carvalho de Melo fl.fl_ip_sport = inet->sport; 644beb8d13bSVenkat Yekkirala security_sk_classify_flow(sk, &fl); 645b9750ce1SArnaldo Carvalho de Melo 646b9750ce1SArnaldo Carvalho de Melo if (np->opt && np->opt->srcrt) { 647b9750ce1SArnaldo Carvalho de Melo struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; 648b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&final, &fl.fl6_dst); 649b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, rt0->addr); 650b9750ce1SArnaldo Carvalho de Melo final_p = &final; 651b9750ce1SArnaldo Carvalho de Melo } 652b9750ce1SArnaldo Carvalho de Melo 653b9750ce1SArnaldo Carvalho de Melo err = ip6_dst_lookup(sk, &dst, &fl); 654b9750ce1SArnaldo Carvalho de Melo if (err) { 655b9750ce1SArnaldo Carvalho de Melo sk->sk_route_caps = 0; 656b9750ce1SArnaldo Carvalho de Melo return err; 657b9750ce1SArnaldo Carvalho de Melo } 658b9750ce1SArnaldo Carvalho de Melo if (final_p) 659b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, final_p); 660b9750ce1SArnaldo Carvalho de Melo 661b9750ce1SArnaldo Carvalho de Melo if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) { 662b9750ce1SArnaldo Carvalho de Melo sk->sk_err_soft = -err; 663b9750ce1SArnaldo Carvalho de Melo return err; 664b9750ce1SArnaldo Carvalho de Melo } 665b9750ce1SArnaldo Carvalho de Melo 6668e1ef0a9SYOSHIFUJI Hideaki __ip6_dst_store(sk, dst, NULL, NULL); 667b9750ce1SArnaldo Carvalho de Melo } 668b9750ce1SArnaldo Carvalho de Melo 669b9750ce1SArnaldo Carvalho de Melo return 0; 670b9750ce1SArnaldo Carvalho de Melo } 671b9750ce1SArnaldo Carvalho de Melo 672b9750ce1SArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); 673b9750ce1SArnaldo Carvalho de Melo 674399c07deSArnaldo Carvalho de Melo int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) 675399c07deSArnaldo Carvalho de Melo { 676399c07deSArnaldo Carvalho de Melo struct ipv6_pinfo *np = inet6_sk(sk); 677399c07deSArnaldo Carvalho de Melo struct inet6_skb_parm *opt = IP6CB(skb); 678399c07deSArnaldo Carvalho de Melo 679399c07deSArnaldo Carvalho de Melo if (np->rxopt.all) { 680399c07deSArnaldo Carvalho de Melo if ((opt->hop && (np->rxopt.bits.hopopts || 681399c07deSArnaldo Carvalho de Melo np->rxopt.bits.ohopopts)) || 68290bcaf7bSAl Viro ((IPV6_FLOWINFO_MASK & *(__be32*)skb->nh.raw) && 683399c07deSArnaldo Carvalho de Melo np->rxopt.bits.rxflow) || 684399c07deSArnaldo Carvalho de Melo (opt->srcrt && (np->rxopt.bits.srcrt || 685399c07deSArnaldo Carvalho de Melo np->rxopt.bits.osrcrt)) || 686399c07deSArnaldo Carvalho de Melo ((opt->dst1 || opt->dst0) && 687399c07deSArnaldo Carvalho de Melo (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) 688399c07deSArnaldo Carvalho de Melo return 1; 689399c07deSArnaldo Carvalho de Melo } 690399c07deSArnaldo Carvalho de Melo return 0; 691399c07deSArnaldo Carvalho de Melo } 692399c07deSArnaldo Carvalho de Melo 693399c07deSArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(ipv6_opt_accepted); 694399c07deSArnaldo Carvalho de Melo 6951da177e4SLinus Torvalds int 6961da177e4SLinus Torvalds snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign) 6971da177e4SLinus Torvalds { 6981da177e4SLinus Torvalds if (ptr == NULL) 6991da177e4SLinus Torvalds return -EINVAL; 7001da177e4SLinus Torvalds 701f9f75005SPekka Enberg ptr[0] = __alloc_percpu(mibsize); 7021da177e4SLinus Torvalds if (!ptr[0]) 7031da177e4SLinus Torvalds goto err0; 7041da177e4SLinus Torvalds 705f9f75005SPekka Enberg ptr[1] = __alloc_percpu(mibsize); 7061da177e4SLinus Torvalds if (!ptr[1]) 7071da177e4SLinus Torvalds goto err1; 7081da177e4SLinus Torvalds 7091da177e4SLinus Torvalds return 0; 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds err1: 7121da177e4SLinus Torvalds free_percpu(ptr[0]); 7131da177e4SLinus Torvalds ptr[0] = NULL; 7141da177e4SLinus Torvalds err0: 7151da177e4SLinus Torvalds return -ENOMEM; 7161da177e4SLinus Torvalds } 7171da177e4SLinus Torvalds 7181da177e4SLinus Torvalds void 7191da177e4SLinus Torvalds snmp6_mib_free(void *ptr[2]) 7201da177e4SLinus Torvalds { 7211da177e4SLinus Torvalds if (ptr == NULL) 7221da177e4SLinus Torvalds return; 7231da177e4SLinus Torvalds free_percpu(ptr[0]); 7241da177e4SLinus Torvalds free_percpu(ptr[1]); 7251da177e4SLinus Torvalds ptr[0] = ptr[1] = NULL; 7261da177e4SLinus Torvalds } 7271da177e4SLinus Torvalds 7281da177e4SLinus Torvalds static int __init init_ipv6_mibs(void) 7291da177e4SLinus Torvalds { 7301da177e4SLinus Torvalds if (snmp6_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib), 7311da177e4SLinus Torvalds __alignof__(struct ipstats_mib)) < 0) 7321da177e4SLinus Torvalds goto err_ip_mib; 7331da177e4SLinus Torvalds if (snmp6_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib), 7341da177e4SLinus Torvalds __alignof__(struct icmpv6_mib)) < 0) 7351da177e4SLinus Torvalds goto err_icmp_mib; 7361da177e4SLinus Torvalds if (snmp6_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib), 7371da177e4SLinus Torvalds __alignof__(struct udp_mib)) < 0) 7381da177e4SLinus Torvalds goto err_udp_mib; 739ba4e58ecSGerrit Renker if (snmp6_mib_init((void **)udplite_stats_in6, sizeof (struct udp_mib), 740ba4e58ecSGerrit Renker __alignof__(struct udp_mib)) < 0) 741ba4e58ecSGerrit Renker goto err_udplite_mib; 7421da177e4SLinus Torvalds return 0; 7431da177e4SLinus Torvalds 744ba4e58ecSGerrit Renker err_udplite_mib: 745ba4e58ecSGerrit Renker snmp6_mib_free((void **)udp_stats_in6); 7461da177e4SLinus Torvalds err_udp_mib: 7471da177e4SLinus Torvalds snmp6_mib_free((void **)icmpv6_statistics); 7481da177e4SLinus Torvalds err_icmp_mib: 7491da177e4SLinus Torvalds snmp6_mib_free((void **)ipv6_statistics); 7501da177e4SLinus Torvalds err_ip_mib: 7511da177e4SLinus Torvalds return -ENOMEM; 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds } 7541da177e4SLinus Torvalds 7551da177e4SLinus Torvalds static void cleanup_ipv6_mibs(void) 7561da177e4SLinus Torvalds { 7571da177e4SLinus Torvalds snmp6_mib_free((void **)ipv6_statistics); 7581da177e4SLinus Torvalds snmp6_mib_free((void **)icmpv6_statistics); 7591da177e4SLinus Torvalds snmp6_mib_free((void **)udp_stats_in6); 760ba4e58ecSGerrit Renker snmp6_mib_free((void **)udplite_stats_in6); 7611da177e4SLinus Torvalds } 7621da177e4SLinus Torvalds 7631da177e4SLinus Torvalds static int __init inet6_init(void) 7641da177e4SLinus Torvalds { 7651da177e4SLinus Torvalds struct sk_buff *dummy_skb; 7661da177e4SLinus Torvalds struct list_head *r; 7671da177e4SLinus Torvalds int err; 7681da177e4SLinus Torvalds 769ef047f5eSYOSHIFUJI Hideaki BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); 770ef047f5eSYOSHIFUJI Hideaki 7711da177e4SLinus Torvalds #ifdef MODULE 7721da177e4SLinus Torvalds #if 0 /* FIXME --RR */ 7731da177e4SLinus Torvalds if (!mod_member_present(&__this_module, can_unload)) 7741da177e4SLinus Torvalds return -EINVAL; 7751da177e4SLinus Torvalds 7761da177e4SLinus Torvalds __this_module.can_unload = &ipv6_unload; 7771da177e4SLinus Torvalds #endif 7781da177e4SLinus Torvalds #endif 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds err = proto_register(&tcpv6_prot, 1); 7811da177e4SLinus Torvalds if (err) 7821da177e4SLinus Torvalds goto out; 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds err = proto_register(&udpv6_prot, 1); 7851da177e4SLinus Torvalds if (err) 7861da177e4SLinus Torvalds goto out_unregister_tcp_proto; 7871da177e4SLinus Torvalds 788ba4e58ecSGerrit Renker err = proto_register(&udplitev6_prot, 1); 7891da177e4SLinus Torvalds if (err) 7901da177e4SLinus Torvalds goto out_unregister_udp_proto; 7911da177e4SLinus Torvalds 792ba4e58ecSGerrit Renker err = proto_register(&rawv6_prot, 1); 793ba4e58ecSGerrit Renker if (err) 794ba4e58ecSGerrit Renker goto out_unregister_udplite_proto; 795ba4e58ecSGerrit Renker 7961da177e4SLinus Torvalds 7971da177e4SLinus Torvalds /* Register the socket-side information for inet6_create. */ 7981da177e4SLinus Torvalds for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) 7991da177e4SLinus Torvalds INIT_LIST_HEAD(r); 8001da177e4SLinus Torvalds 8011da177e4SLinus Torvalds /* We MUST register RAW sockets before we create the ICMP6, 8021da177e4SLinus Torvalds * IGMP6, or NDISC control sockets. 8031da177e4SLinus Torvalds */ 8041da177e4SLinus Torvalds inet6_register_protosw(&rawv6_protosw); 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvalds /* Register the family here so that the init calls below will 8071da177e4SLinus Torvalds * be able to create sockets. (?? is this dangerous ??) 8081da177e4SLinus Torvalds */ 8098eb55910SDavid S. Miller err = sock_register(&inet6_family_ops); 8108eb55910SDavid S. Miller if (err) 8118eb55910SDavid S. Miller goto out_unregister_raw_proto; 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds /* Initialise ipv6 mibs */ 8141da177e4SLinus Torvalds err = init_ipv6_mibs(); 8151da177e4SLinus Torvalds if (err) 8168eb55910SDavid S. Miller goto out_unregister_sock; 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds /* 8191da177e4SLinus Torvalds * ipngwg API draft makes clear that the correct semantics 8201da177e4SLinus Torvalds * for TCP and UDP is to consider one TCP and UDP instance 8211da177e4SLinus Torvalds * in a host availiable by both INET and INET6 APIs and 8221da177e4SLinus Torvalds * able to communicate via both network protocols. 8231da177e4SLinus Torvalds */ 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 8261da177e4SLinus Torvalds ipv6_sysctl_register(); 8271da177e4SLinus Torvalds #endif 8281da177e4SLinus Torvalds err = icmpv6_init(&inet6_family_ops); 8291da177e4SLinus Torvalds if (err) 8301da177e4SLinus Torvalds goto icmp_fail; 8311da177e4SLinus Torvalds err = ndisc_init(&inet6_family_ops); 8321da177e4SLinus Torvalds if (err) 8331da177e4SLinus Torvalds goto ndisc_fail; 8341da177e4SLinus Torvalds err = igmp6_init(&inet6_family_ops); 8351da177e4SLinus Torvalds if (err) 8361da177e4SLinus Torvalds goto igmp_fail; 8372cc7d573SHarald Welte err = ipv6_netfilter_init(); 8382cc7d573SHarald Welte if (err) 8392cc7d573SHarald Welte goto netfilter_fail; 8401da177e4SLinus Torvalds /* Create /proc/foo6 entries. */ 8411da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 8421da177e4SLinus Torvalds err = -ENOMEM; 8431da177e4SLinus Torvalds if (raw6_proc_init()) 8441da177e4SLinus Torvalds goto proc_raw6_fail; 8451da177e4SLinus Torvalds if (tcp6_proc_init()) 8461da177e4SLinus Torvalds goto proc_tcp6_fail; 8471da177e4SLinus Torvalds if (udp6_proc_init()) 8481da177e4SLinus Torvalds goto proc_udp6_fail; 849ba4e58ecSGerrit Renker if (udplite6_proc_init()) 850ba4e58ecSGerrit Renker goto proc_udplite6_fail; 8511da177e4SLinus Torvalds if (ipv6_misc_proc_init()) 8521da177e4SLinus Torvalds goto proc_misc6_fail; 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds if (ac6_proc_init()) 8551da177e4SLinus Torvalds goto proc_anycast6_fail; 8561da177e4SLinus Torvalds if (if6_proc_init()) 8571da177e4SLinus Torvalds goto proc_if6_fail; 8581da177e4SLinus Torvalds #endif 8591da177e4SLinus Torvalds ip6_route_init(); 8601da177e4SLinus Torvalds ip6_flowlabel_init(); 8611da177e4SLinus Torvalds err = addrconf_init(); 8621da177e4SLinus Torvalds if (err) 8631da177e4SLinus Torvalds goto addrconf_fail; 8641da177e4SLinus Torvalds 8651da177e4SLinus Torvalds /* Init v6 extension headers. */ 8661da177e4SLinus Torvalds ipv6_rthdr_init(); 8671da177e4SLinus Torvalds ipv6_frag_init(); 8681da177e4SLinus Torvalds ipv6_nodata_init(); 8691da177e4SLinus Torvalds ipv6_destopt_init(); 8702c8d7ca0SNoriaki TAKAMIYA #ifdef CONFIG_IPV6_MIP6 8712c8d7ca0SNoriaki TAKAMIYA mip6_init(); 8722c8d7ca0SNoriaki TAKAMIYA #endif 8731da177e4SLinus Torvalds 8741da177e4SLinus Torvalds /* Init v6 transport protocols. */ 8751da177e4SLinus Torvalds udpv6_init(); 876ba4e58ecSGerrit Renker udplitev6_init(); 8771da177e4SLinus Torvalds tcpv6_init(); 878e2ed4052SHerbert Xu 879e2ed4052SHerbert Xu ipv6_packet_init(); 8801da177e4SLinus Torvalds err = 0; 8811da177e4SLinus Torvalds out: 8821da177e4SLinus Torvalds return err; 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds addrconf_fail: 8851da177e4SLinus Torvalds ip6_flowlabel_cleanup(); 8861da177e4SLinus Torvalds ip6_route_cleanup(); 8871da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 8881da177e4SLinus Torvalds if6_proc_exit(); 8891da177e4SLinus Torvalds proc_if6_fail: 8901da177e4SLinus Torvalds ac6_proc_exit(); 8911da177e4SLinus Torvalds proc_anycast6_fail: 8921da177e4SLinus Torvalds ipv6_misc_proc_exit(); 8931da177e4SLinus Torvalds proc_misc6_fail: 894ba4e58ecSGerrit Renker udplite6_proc_exit(); 895ba4e58ecSGerrit Renker proc_udplite6_fail: 8961da177e4SLinus Torvalds udp6_proc_exit(); 8971da177e4SLinus Torvalds proc_udp6_fail: 8981da177e4SLinus Torvalds tcp6_proc_exit(); 8991da177e4SLinus Torvalds proc_tcp6_fail: 9001da177e4SLinus Torvalds raw6_proc_exit(); 9011da177e4SLinus Torvalds proc_raw6_fail: 9021da177e4SLinus Torvalds #endif 9032cc7d573SHarald Welte ipv6_netfilter_fini(); 9042cc7d573SHarald Welte netfilter_fail: 9051da177e4SLinus Torvalds igmp6_cleanup(); 9061da177e4SLinus Torvalds igmp_fail: 9071da177e4SLinus Torvalds ndisc_cleanup(); 9081da177e4SLinus Torvalds ndisc_fail: 9091da177e4SLinus Torvalds icmpv6_cleanup(); 9101da177e4SLinus Torvalds icmp_fail: 9111da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 9121da177e4SLinus Torvalds ipv6_sysctl_unregister(); 9131da177e4SLinus Torvalds #endif 9141da177e4SLinus Torvalds cleanup_ipv6_mibs(); 9158eb55910SDavid S. Miller out_unregister_sock: 9168eb55910SDavid S. Miller sock_unregister(PF_INET6); 9171da177e4SLinus Torvalds out_unregister_raw_proto: 9181da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 919ba4e58ecSGerrit Renker out_unregister_udplite_proto: 920ba4e58ecSGerrit Renker proto_unregister(&udplitev6_prot); 9211da177e4SLinus Torvalds out_unregister_udp_proto: 9221da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 9231da177e4SLinus Torvalds out_unregister_tcp_proto: 9241da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 9251da177e4SLinus Torvalds goto out; 9261da177e4SLinus Torvalds } 9271da177e4SLinus Torvalds module_init(inet6_init); 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds static void __exit inet6_exit(void) 9301da177e4SLinus Torvalds { 9311da177e4SLinus Torvalds /* First of all disallow new sockets creation. */ 9321da177e4SLinus Torvalds sock_unregister(PF_INET6); 9331da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 9341da177e4SLinus Torvalds if6_proc_exit(); 9351da177e4SLinus Torvalds ac6_proc_exit(); 9361da177e4SLinus Torvalds ipv6_misc_proc_exit(); 9371da177e4SLinus Torvalds udp6_proc_exit(); 938ba4e58ecSGerrit Renker udplite6_proc_exit(); 9391da177e4SLinus Torvalds tcp6_proc_exit(); 9401da177e4SLinus Torvalds raw6_proc_exit(); 9411da177e4SLinus Torvalds #endif 9422c8d7ca0SNoriaki TAKAMIYA #ifdef CONFIG_IPV6_MIP6 9432c8d7ca0SNoriaki TAKAMIYA mip6_fini(); 9442c8d7ca0SNoriaki TAKAMIYA #endif 9451da177e4SLinus Torvalds /* Cleanup code parts. */ 9461da177e4SLinus Torvalds ip6_flowlabel_cleanup(); 9471da177e4SLinus Torvalds addrconf_cleanup(); 9481da177e4SLinus Torvalds ip6_route_cleanup(); 9491da177e4SLinus Torvalds ipv6_packet_cleanup(); 9501da177e4SLinus Torvalds igmp6_cleanup(); 9512cc7d573SHarald Welte ipv6_netfilter_fini(); 9521da177e4SLinus Torvalds ndisc_cleanup(); 9531da177e4SLinus Torvalds icmpv6_cleanup(); 9541da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 9551da177e4SLinus Torvalds ipv6_sysctl_unregister(); 9561da177e4SLinus Torvalds #endif 9571da177e4SLinus Torvalds cleanup_ipv6_mibs(); 9581da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 9591da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 9601da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 9611da177e4SLinus Torvalds } 9621da177e4SLinus Torvalds module_exit(inet6_exit); 9631da177e4SLinus Torvalds 9641da177e4SLinus Torvalds MODULE_ALIAS_NETPROTO(PF_INET6); 965