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/timer.h> 321da177e4SLinus Torvalds #include <linux/string.h> 331da177e4SLinus Torvalds #include <linux/sockios.h> 341da177e4SLinus Torvalds #include <linux/net.h> 351da177e4SLinus Torvalds #include <linux/fcntl.h> 361da177e4SLinus Torvalds #include <linux/mm.h> 371da177e4SLinus Torvalds #include <linux/interrupt.h> 381da177e4SLinus Torvalds #include <linux/proc_fs.h> 391da177e4SLinus Torvalds #include <linux/stat.h> 401da177e4SLinus Torvalds #include <linux/init.h> 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds #include <linux/inet.h> 431da177e4SLinus Torvalds #include <linux/netdevice.h> 441da177e4SLinus Torvalds #include <linux/icmpv6.h> 451da177e4SLinus Torvalds #include <linux/smp_lock.h> 462cc7d573SHarald Welte #include <linux/netfilter_ipv6.h> 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds #include <net/ip.h> 491da177e4SLinus Torvalds #include <net/ipv6.h> 501da177e4SLinus Torvalds #include <net/udp.h> 51ba4e58ecSGerrit Renker #include <net/udplite.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 622c8d7ca0SNoriaki TAKAMIYA #ifdef CONFIG_IPV6_MIP6 632c8d7ca0SNoriaki TAKAMIYA #include <net/mip6.h> 642c8d7ca0SNoriaki TAKAMIYA #endif 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds #include <asm/uaccess.h> 671da177e4SLinus Torvalds #include <asm/system.h> 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds MODULE_AUTHOR("Cast of dozens"); 701da177e4SLinus Torvalds MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); 711da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 721da177e4SLinus Torvalds 73ab32ea5dSBrian Haley int sysctl_ipv6_bindv6only __read_mostly; 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds /* The inetsw table contains everything that inet_create needs to 761da177e4SLinus Torvalds * build a new socket. 771da177e4SLinus Torvalds */ 781da177e4SLinus Torvalds static struct list_head inetsw6[SOCK_MAX]; 791da177e4SLinus Torvalds static DEFINE_SPINLOCK(inetsw6_lock); 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) 821da177e4SLinus Torvalds { 831da177e4SLinus Torvalds const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds return (struct ipv6_pinfo *)(((u8 *)sk) + offset); 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds static int inet6_create(struct socket *sock, int protocol) 891da177e4SLinus Torvalds { 901da177e4SLinus Torvalds struct inet_sock *inet; 911da177e4SLinus Torvalds struct ipv6_pinfo *np; 921da177e4SLinus Torvalds struct sock *sk; 931da177e4SLinus Torvalds struct list_head *p; 941da177e4SLinus Torvalds struct inet_protosw *answer; 951da177e4SLinus Torvalds struct proto *answer_prot; 961da177e4SLinus Torvalds unsigned char answer_flags; 971da177e4SLinus Torvalds char answer_no_check; 98af1afe86SYOSHIFUJI Hideaki int try_loading_module = 0; 99af1afe86SYOSHIFUJI Hideaki int err; 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds /* Look for the requested type/protocol pair. */ 1021da177e4SLinus Torvalds answer = NULL; 103af1afe86SYOSHIFUJI Hideaki lookup_protocol: 104af1afe86SYOSHIFUJI Hideaki err = -ESOCKTNOSUPPORT; 1051da177e4SLinus Torvalds rcu_read_lock(); 1061da177e4SLinus Torvalds list_for_each_rcu(p, &inetsw6[sock->type]) { 1071da177e4SLinus Torvalds answer = list_entry(p, struct inet_protosw, list); 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds /* Check the non-wild match. */ 1101da177e4SLinus Torvalds if (protocol == answer->protocol) { 1111da177e4SLinus Torvalds if (protocol != IPPROTO_IP) 1121da177e4SLinus Torvalds break; 1131da177e4SLinus Torvalds } else { 1141da177e4SLinus Torvalds /* Check for the two wild cases. */ 1151da177e4SLinus Torvalds if (IPPROTO_IP == protocol) { 1161da177e4SLinus Torvalds protocol = answer->protocol; 1171da177e4SLinus Torvalds break; 1181da177e4SLinus Torvalds } 1191da177e4SLinus Torvalds if (IPPROTO_IP == answer->protocol) 1201da177e4SLinus Torvalds break; 1211da177e4SLinus Torvalds } 122af1afe86SYOSHIFUJI Hideaki err = -EPROTONOSUPPORT; 1231da177e4SLinus Torvalds answer = NULL; 1241da177e4SLinus Torvalds } 1251da177e4SLinus Torvalds 126af1afe86SYOSHIFUJI Hideaki if (!answer) { 127af1afe86SYOSHIFUJI Hideaki if (try_loading_module < 2) { 128af1afe86SYOSHIFUJI Hideaki rcu_read_unlock(); 129af1afe86SYOSHIFUJI Hideaki /* 130af1afe86SYOSHIFUJI Hideaki * Be more specific, e.g. net-pf-10-proto-132-type-1 131af1afe86SYOSHIFUJI Hideaki * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM) 132af1afe86SYOSHIFUJI Hideaki */ 133af1afe86SYOSHIFUJI Hideaki if (++try_loading_module == 1) 134af1afe86SYOSHIFUJI Hideaki request_module("net-pf-%d-proto-%d-type-%d", 135af1afe86SYOSHIFUJI Hideaki PF_INET6, protocol, sock->type); 136af1afe86SYOSHIFUJI Hideaki /* 137af1afe86SYOSHIFUJI Hideaki * Fall back to generic, e.g. net-pf-10-proto-132 138af1afe86SYOSHIFUJI Hideaki * (net-pf-PF_INET6-proto-IPPROTO_SCTP) 139af1afe86SYOSHIFUJI Hideaki */ 140af1afe86SYOSHIFUJI Hideaki else 141af1afe86SYOSHIFUJI Hideaki request_module("net-pf-%d-proto-%d", 142af1afe86SYOSHIFUJI Hideaki PF_INET6, protocol); 143af1afe86SYOSHIFUJI Hideaki goto lookup_protocol; 144af1afe86SYOSHIFUJI Hideaki } else 1451da177e4SLinus Torvalds goto out_rcu_unlock; 146af1afe86SYOSHIFUJI Hideaki } 147af1afe86SYOSHIFUJI Hideaki 148af1afe86SYOSHIFUJI Hideaki err = -EPERM; 1491da177e4SLinus Torvalds if (answer->capability > 0 && !capable(answer->capability)) 1501da177e4SLinus Torvalds goto out_rcu_unlock; 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds sock->ops = answer->ops; 1531da177e4SLinus Torvalds answer_prot = answer->prot; 1541da177e4SLinus Torvalds answer_no_check = answer->no_check; 1551da177e4SLinus Torvalds answer_flags = answer->flags; 1561da177e4SLinus Torvalds rcu_read_unlock(); 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds BUG_TRAP(answer_prot->slab != NULL); 1591da177e4SLinus Torvalds 160af1afe86SYOSHIFUJI Hideaki err = -ENOBUFS; 1611da177e4SLinus Torvalds sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1); 1621da177e4SLinus Torvalds if (sk == NULL) 1631da177e4SLinus Torvalds goto out; 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds sock_init_data(sock, sk); 1661da177e4SLinus Torvalds 167af1afe86SYOSHIFUJI Hideaki err = 0; 1681da177e4SLinus Torvalds sk->sk_no_check = answer_no_check; 1691da177e4SLinus Torvalds if (INET_PROTOSW_REUSE & answer_flags) 1701da177e4SLinus Torvalds sk->sk_reuse = 1; 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds inet = inet_sk(sk); 173469de9b9SPaul Moore inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds if (SOCK_RAW == sock->type) { 1761da177e4SLinus Torvalds inet->num = protocol; 1771da177e4SLinus Torvalds if (IPPROTO_RAW == protocol) 1781da177e4SLinus Torvalds inet->hdrincl = 1; 1791da177e4SLinus Torvalds } 1801da177e4SLinus Torvalds 181e6848976SArnaldo Carvalho de Melo sk->sk_destruct = inet_sock_destruct; 1821da177e4SLinus Torvalds sk->sk_family = PF_INET6; 1831da177e4SLinus Torvalds sk->sk_protocol = protocol; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds sk->sk_backlog_rcv = answer->prot->backlog_rcv; 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); 1881da177e4SLinus Torvalds np->hop_limit = -1; 1891da177e4SLinus Torvalds np->mcast_hops = -1; 1901da177e4SLinus Torvalds np->mc_loop = 1; 1911da177e4SLinus Torvalds np->pmtudisc = IPV6_PMTUDISC_WANT; 1921da177e4SLinus Torvalds np->ipv6only = sysctl_ipv6_bindv6only; 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds /* Init the ipv4 part of the socket since we can have sockets 1951da177e4SLinus Torvalds * using v6 API for ipv4. 1961da177e4SLinus Torvalds */ 1971da177e4SLinus Torvalds inet->uc_ttl = -1; 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds inet->mc_loop = 1; 2001da177e4SLinus Torvalds inet->mc_ttl = 1; 2011da177e4SLinus Torvalds inet->mc_index = 0; 2021da177e4SLinus Torvalds inet->mc_list = NULL; 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds if (ipv4_config.no_pmtu_disc) 2051da177e4SLinus Torvalds inet->pmtudisc = IP_PMTUDISC_DONT; 2061da177e4SLinus Torvalds else 2071da177e4SLinus Torvalds inet->pmtudisc = IP_PMTUDISC_WANT; 208e6848976SArnaldo Carvalho de Melo /* 209e6848976SArnaldo Carvalho de Melo * Increment only the relevant sk_prot->socks debug field, this changes 210e6848976SArnaldo Carvalho de Melo * the previous behaviour of incrementing both the equivalent to 211e6848976SArnaldo Carvalho de Melo * answer->prot->socks (inet6_sock_nr) and inet_sock_nr. 212e6848976SArnaldo Carvalho de Melo * 213e6848976SArnaldo Carvalho de Melo * This allows better debug granularity as we'll know exactly how many 214e6848976SArnaldo Carvalho de Melo * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6 215e6848976SArnaldo Carvalho de Melo * transport protocol socks. -acme 216e6848976SArnaldo Carvalho de Melo */ 217e6848976SArnaldo Carvalho de Melo sk_refcnt_debug_inc(sk); 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds if (inet->num) { 2201da177e4SLinus Torvalds /* It assumes that any protocol which allows 2211da177e4SLinus Torvalds * the user to assign a number at socket 2221da177e4SLinus Torvalds * creation time automatically shares. 2231da177e4SLinus Torvalds */ 224e69a4adcSAl Viro inet->sport = htons(inet->num); 2251da177e4SLinus Torvalds sk->sk_prot->hash(sk); 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds if (sk->sk_prot->init) { 228af1afe86SYOSHIFUJI Hideaki err = sk->sk_prot->init(sk); 229af1afe86SYOSHIFUJI Hideaki if (err) { 2301da177e4SLinus Torvalds sk_common_release(sk); 2311da177e4SLinus Torvalds goto out; 2321da177e4SLinus Torvalds } 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds out: 235af1afe86SYOSHIFUJI Hideaki return err; 2361da177e4SLinus Torvalds out_rcu_unlock: 2371da177e4SLinus Torvalds rcu_read_unlock(); 2381da177e4SLinus Torvalds goto out; 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds /* bind for INET6 API */ 2431da177e4SLinus Torvalds int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) 2441da177e4SLinus Torvalds { 2451da177e4SLinus Torvalds struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr; 2461da177e4SLinus Torvalds struct sock *sk = sock->sk; 2471da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 2481da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 249fd683222SAl Viro __be32 v4addr = 0; 2501da177e4SLinus Torvalds unsigned short snum; 2511da177e4SLinus Torvalds int addr_type = 0; 2521da177e4SLinus Torvalds int err = 0; 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds /* If the socket has its own bind function then use it. */ 2551da177e4SLinus Torvalds if (sk->sk_prot->bind) 2561da177e4SLinus Torvalds return sk->sk_prot->bind(sk, uaddr, addr_len); 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 2591da177e4SLinus Torvalds return -EINVAL; 2601da177e4SLinus Torvalds addr_type = ipv6_addr_type(&addr->sin6_addr); 2611da177e4SLinus Torvalds if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM) 2621da177e4SLinus Torvalds return -EINVAL; 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds snum = ntohs(addr->sin6_port); 2651da177e4SLinus Torvalds if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) 2661da177e4SLinus Torvalds return -EACCES; 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds lock_sock(sk); 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds /* Check these errors (active socket, double bind). */ 2711da177e4SLinus Torvalds if (sk->sk_state != TCP_CLOSE || inet->num) { 2721da177e4SLinus Torvalds err = -EINVAL; 2731da177e4SLinus Torvalds goto out; 2741da177e4SLinus Torvalds } 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds /* Check if the address belongs to the host. */ 2771da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_MAPPED) { 2781da177e4SLinus Torvalds v4addr = addr->sin6_addr.s6_addr32[3]; 2791da177e4SLinus Torvalds if (inet_addr_type(v4addr) != RTN_LOCAL) { 2801da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 2811da177e4SLinus Torvalds goto out; 2821da177e4SLinus Torvalds } 2831da177e4SLinus Torvalds } else { 2841da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) { 2851da177e4SLinus Torvalds struct net_device *dev = NULL; 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds if (addr_type & IPV6_ADDR_LINKLOCAL) { 2881da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 2891da177e4SLinus Torvalds addr->sin6_scope_id) { 2901da177e4SLinus Torvalds /* Override any existing binding, if another one 2911da177e4SLinus Torvalds * is supplied by user. 2921da177e4SLinus Torvalds */ 2931da177e4SLinus Torvalds sk->sk_bound_dev_if = addr->sin6_scope_id; 2941da177e4SLinus Torvalds } 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds /* Binding to link-local address requires an interface */ 2971da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) { 2981da177e4SLinus Torvalds err = -EINVAL; 2991da177e4SLinus Torvalds goto out; 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds dev = dev_get_by_index(sk->sk_bound_dev_if); 3021da177e4SLinus Torvalds if (!dev) { 3031da177e4SLinus Torvalds err = -ENODEV; 3041da177e4SLinus Torvalds goto out; 3051da177e4SLinus Torvalds } 3061da177e4SLinus Torvalds } 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds /* ipv4 addr of the socket is invalid. Only the 3091da177e4SLinus Torvalds * unspecified and mapped address have a v4 equivalent. 3101da177e4SLinus Torvalds */ 3111da177e4SLinus Torvalds v4addr = LOOPBACK4_IPV6; 3121da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) { 3131da177e4SLinus Torvalds if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) { 3141da177e4SLinus Torvalds if (dev) 3151da177e4SLinus Torvalds dev_put(dev); 3161da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 3171da177e4SLinus Torvalds goto out; 3181da177e4SLinus Torvalds } 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds if (dev) 3211da177e4SLinus Torvalds dev_put(dev); 3221da177e4SLinus Torvalds } 3231da177e4SLinus Torvalds } 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds inet->rcv_saddr = v4addr; 3261da177e4SLinus Torvalds inet->saddr = v4addr; 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); 3291da177e4SLinus Torvalds 3301da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) 3311da177e4SLinus Torvalds ipv6_addr_copy(&np->saddr, &addr->sin6_addr); 3321da177e4SLinus Torvalds 3331da177e4SLinus Torvalds /* Make sure we are allowed to bind here. */ 3341da177e4SLinus Torvalds if (sk->sk_prot->get_port(sk, snum)) { 3351da177e4SLinus Torvalds inet_reset_saddr(sk); 3361da177e4SLinus Torvalds err = -EADDRINUSE; 3371da177e4SLinus Torvalds goto out; 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) 3411da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDADDR_LOCK; 3421da177e4SLinus Torvalds if (snum) 3431da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDPORT_LOCK; 344e69a4adcSAl Viro inet->sport = htons(inet->num); 3451da177e4SLinus Torvalds inet->dport = 0; 3461da177e4SLinus Torvalds inet->daddr = 0; 3471da177e4SLinus Torvalds out: 3481da177e4SLinus Torvalds release_sock(sk); 3491da177e4SLinus Torvalds return err; 3501da177e4SLinus Torvalds } 3511da177e4SLinus Torvalds 3527159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_bind); 3537159039aSYOSHIFUJI Hideaki 3541da177e4SLinus Torvalds int inet6_release(struct socket *sock) 3551da177e4SLinus Torvalds { 3561da177e4SLinus Torvalds struct sock *sk = sock->sk; 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds if (sk == NULL) 3591da177e4SLinus Torvalds return -EINVAL; 3601da177e4SLinus Torvalds 3611da177e4SLinus Torvalds /* Free mc lists */ 3621da177e4SLinus Torvalds ipv6_sock_mc_close(sk); 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds /* Free ac lists */ 3651da177e4SLinus Torvalds ipv6_sock_ac_close(sk); 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds return inet_release(sock); 3681da177e4SLinus Torvalds } 3691da177e4SLinus Torvalds 3707159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_release); 3717159039aSYOSHIFUJI Hideaki 3721da177e4SLinus Torvalds int inet6_destroy_sock(struct sock *sk) 3731da177e4SLinus Torvalds { 3741da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 3751da177e4SLinus Torvalds struct sk_buff *skb; 3761da177e4SLinus Torvalds struct ipv6_txoptions *opt; 3771da177e4SLinus Torvalds 3781da177e4SLinus Torvalds /* Release rx options */ 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds if ((skb = xchg(&np->pktoptions, NULL)) != NULL) 3811da177e4SLinus Torvalds kfree_skb(skb); 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds /* Free flowlabels */ 3841da177e4SLinus Torvalds fl6_free_socklist(sk); 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds /* Free tx options */ 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds if ((opt = xchg(&np->opt, NULL)) != NULL) 3891da177e4SLinus Torvalds sock_kfree_s(sk, opt, opt->tot_len); 3901da177e4SLinus Torvalds 3911da177e4SLinus Torvalds return 0; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds 3943cf3dc6cSArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(inet6_destroy_sock); 3953cf3dc6cSArnaldo Carvalho de Melo 3961da177e4SLinus Torvalds /* 3971da177e4SLinus Torvalds * This does both peername and sockname. 3981da177e4SLinus Torvalds */ 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds int inet6_getname(struct socket *sock, struct sockaddr *uaddr, 4011da177e4SLinus Torvalds int *uaddr_len, int peer) 4021da177e4SLinus Torvalds { 4031da177e4SLinus Torvalds struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; 4041da177e4SLinus Torvalds struct sock *sk = sock->sk; 4051da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 4061da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds sin->sin6_family = AF_INET6; 4091da177e4SLinus Torvalds sin->sin6_flowinfo = 0; 4101da177e4SLinus Torvalds sin->sin6_scope_id = 0; 4111da177e4SLinus Torvalds if (peer) { 4121da177e4SLinus Torvalds if (!inet->dport) 4131da177e4SLinus Torvalds return -ENOTCONN; 4141da177e4SLinus Torvalds if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && 4151da177e4SLinus Torvalds peer == 1) 4161da177e4SLinus Torvalds return -ENOTCONN; 4171da177e4SLinus Torvalds sin->sin6_port = inet->dport; 4181da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->daddr); 4191da177e4SLinus Torvalds if (np->sndflow) 4201da177e4SLinus Torvalds sin->sin6_flowinfo = np->flow_label; 4211da177e4SLinus Torvalds } else { 4221da177e4SLinus Torvalds if (ipv6_addr_any(&np->rcv_saddr)) 4231da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->saddr); 4241da177e4SLinus Torvalds else 4251da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds sin->sin6_port = inet->sport; 4281da177e4SLinus Torvalds } 4291da177e4SLinus Torvalds if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) 4301da177e4SLinus Torvalds sin->sin6_scope_id = sk->sk_bound_dev_if; 4311da177e4SLinus Torvalds *uaddr_len = sizeof(*sin); 4321da177e4SLinus Torvalds return(0); 4331da177e4SLinus Torvalds } 4341da177e4SLinus Torvalds 4357159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_getname); 4367159039aSYOSHIFUJI Hideaki 4371da177e4SLinus Torvalds int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 4381da177e4SLinus Torvalds { 4391da177e4SLinus Torvalds struct sock *sk = sock->sk; 4401da177e4SLinus Torvalds 4411da177e4SLinus Torvalds switch(cmd) 4421da177e4SLinus Torvalds { 4431da177e4SLinus Torvalds case SIOCGSTAMP: 4441da177e4SLinus Torvalds return sock_get_timestamp(sk, (struct timeval __user *)arg); 4451da177e4SLinus Torvalds 446ae40eb1eSEric Dumazet case SIOCGSTAMPNS: 447ae40eb1eSEric Dumazet return sock_get_timestampns(sk, (struct timespec __user *)arg); 448ae40eb1eSEric Dumazet 4491da177e4SLinus Torvalds case SIOCADDRT: 4501da177e4SLinus Torvalds case SIOCDELRT: 4511da177e4SLinus Torvalds 4521da177e4SLinus Torvalds return(ipv6_route_ioctl(cmd,(void __user *)arg)); 4531da177e4SLinus Torvalds 4541da177e4SLinus Torvalds case SIOCSIFADDR: 4551da177e4SLinus Torvalds return addrconf_add_ifaddr((void __user *) arg); 4561da177e4SLinus Torvalds case SIOCDIFADDR: 4571da177e4SLinus Torvalds return addrconf_del_ifaddr((void __user *) arg); 4581da177e4SLinus Torvalds case SIOCSIFDSTADDR: 4591da177e4SLinus Torvalds return addrconf_set_dstaddr((void __user *) arg); 4601da177e4SLinus Torvalds default: 461b5e5fa5eSChristoph Hellwig if (!sk->sk_prot->ioctl) 462b5e5fa5eSChristoph Hellwig return -ENOIOCTLCMD; 463b5e5fa5eSChristoph Hellwig return sk->sk_prot->ioctl(sk, cmd, arg); 4641da177e4SLinus Torvalds } 4651da177e4SLinus Torvalds /*NOTREACHED*/ 4661da177e4SLinus Torvalds return(0); 4671da177e4SLinus Torvalds } 4681da177e4SLinus Torvalds 4697159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_ioctl); 4707159039aSYOSHIFUJI Hideaki 47190ddc4f0SEric Dumazet const struct proto_ops inet6_stream_ops = { 4721da177e4SLinus Torvalds .family = PF_INET6, 4731da177e4SLinus Torvalds .owner = THIS_MODULE, 4741da177e4SLinus Torvalds .release = inet6_release, 4751da177e4SLinus Torvalds .bind = inet6_bind, 4761da177e4SLinus Torvalds .connect = inet_stream_connect, /* ok */ 4771da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 4781da177e4SLinus Torvalds .accept = inet_accept, /* ok */ 4791da177e4SLinus Torvalds .getname = inet6_getname, 4801da177e4SLinus Torvalds .poll = tcp_poll, /* ok */ 4811da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 4821da177e4SLinus Torvalds .listen = inet_listen, /* ok */ 4831da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 4841da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 4851da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 486543d9cfeSArnaldo Carvalho de Melo .sendmsg = inet_sendmsg, /* ok */ 487543d9cfeSArnaldo Carvalho de Melo .recvmsg = sock_common_recvmsg, /* ok */ 488543d9cfeSArnaldo Carvalho de Melo .mmap = sock_no_mmap, 489543d9cfeSArnaldo Carvalho de Melo .sendpage = tcp_sendpage, 4903fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 4913fdadf7dSDmitry Mishin .compat_setsockopt = compat_sock_common_setsockopt, 4923fdadf7dSDmitry Mishin .compat_getsockopt = compat_sock_common_getsockopt, 4933fdadf7dSDmitry Mishin #endif 4941da177e4SLinus Torvalds }; 4951da177e4SLinus Torvalds 49690ddc4f0SEric Dumazet const struct proto_ops inet6_dgram_ops = { 4971da177e4SLinus Torvalds .family = PF_INET6, 4981da177e4SLinus Torvalds .owner = THIS_MODULE, 4991da177e4SLinus Torvalds .release = inet6_release, 5001da177e4SLinus Torvalds .bind = inet6_bind, 5011da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 5021da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 5031da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 5041da177e4SLinus Torvalds .getname = inet6_getname, 5051da177e4SLinus Torvalds .poll = udp_poll, /* ok */ 5061da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 5071da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 5081da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 5091da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5101da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5111da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 5121da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 5131da177e4SLinus Torvalds .mmap = sock_no_mmap, 5141da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 515543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 516543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_sock_common_setsockopt, 517543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_sock_common_getsockopt, 518543d9cfeSArnaldo Carvalho de Melo #endif 5191da177e4SLinus Torvalds }; 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds static struct net_proto_family inet6_family_ops = { 5221da177e4SLinus Torvalds .family = PF_INET6, 5231da177e4SLinus Torvalds .create = inet6_create, 5241da177e4SLinus Torvalds .owner = THIS_MODULE, 5251da177e4SLinus Torvalds }; 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds /* Same as inet6_dgram_ops, sans udp_poll. */ 52890ddc4f0SEric Dumazet static const struct proto_ops inet6_sockraw_ops = { 5291da177e4SLinus Torvalds .family = PF_INET6, 5301da177e4SLinus Torvalds .owner = THIS_MODULE, 5311da177e4SLinus Torvalds .release = inet6_release, 5321da177e4SLinus Torvalds .bind = inet6_bind, 5331da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 5341da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 5351da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 5361da177e4SLinus Torvalds .getname = inet6_getname, 5371da177e4SLinus Torvalds .poll = datagram_poll, /* ok */ 5381da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 5391da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 5401da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 5411da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5421da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5431da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 5441da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 5451da177e4SLinus Torvalds .mmap = sock_no_mmap, 5461da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 547543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 548543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_sock_common_setsockopt, 549543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_sock_common_getsockopt, 550543d9cfeSArnaldo Carvalho de Melo #endif 5511da177e4SLinus Torvalds }; 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds static struct inet_protosw rawv6_protosw = { 5541da177e4SLinus Torvalds .type = SOCK_RAW, 5551da177e4SLinus Torvalds .protocol = IPPROTO_IP, /* wild card */ 5561da177e4SLinus Torvalds .prot = &rawv6_prot, 5571da177e4SLinus Torvalds .ops = &inet6_sockraw_ops, 5581da177e4SLinus Torvalds .capability = CAP_NET_RAW, 5591da177e4SLinus Torvalds .no_check = UDP_CSUM_DEFAULT, 5601da177e4SLinus Torvalds .flags = INET_PROTOSW_REUSE, 5611da177e4SLinus Torvalds }; 5621da177e4SLinus Torvalds 5631da177e4SLinus Torvalds void 5641da177e4SLinus Torvalds inet6_register_protosw(struct inet_protosw *p) 5651da177e4SLinus Torvalds { 5661da177e4SLinus Torvalds struct list_head *lh; 5671da177e4SLinus Torvalds struct inet_protosw *answer; 5681da177e4SLinus Torvalds int protocol = p->protocol; 5691da177e4SLinus Torvalds struct list_head *last_perm; 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds if (p->type >= SOCK_MAX) 5741da177e4SLinus Torvalds goto out_illegal; 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvalds /* If we are trying to override a permanent protocol, bail. */ 5771da177e4SLinus Torvalds answer = NULL; 5781da177e4SLinus Torvalds last_perm = &inetsw6[p->type]; 5791da177e4SLinus Torvalds list_for_each(lh, &inetsw6[p->type]) { 5801da177e4SLinus Torvalds answer = list_entry(lh, struct inet_protosw, list); 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds /* Check only the non-wild match. */ 5831da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & answer->flags) { 5841da177e4SLinus Torvalds if (protocol == answer->protocol) 5851da177e4SLinus Torvalds break; 5861da177e4SLinus Torvalds last_perm = lh; 5871da177e4SLinus Torvalds } 5881da177e4SLinus Torvalds 5891da177e4SLinus Torvalds answer = NULL; 5901da177e4SLinus Torvalds } 5911da177e4SLinus Torvalds if (answer) 5921da177e4SLinus Torvalds goto out_permanent; 5931da177e4SLinus Torvalds 5941da177e4SLinus Torvalds /* Add the new entry after the last permanent entry if any, so that 5951da177e4SLinus Torvalds * the new entry does not override a permanent entry when matched with 5961da177e4SLinus Torvalds * a wild-card protocol. But it is allowed to override any existing 5971da177e4SLinus Torvalds * non-permanent entry. This means that when we remove this entry, the 5981da177e4SLinus Torvalds * system automatically returns to the old behavior. 5991da177e4SLinus Torvalds */ 6001da177e4SLinus Torvalds list_add_rcu(&p->list, last_perm); 6011da177e4SLinus Torvalds out: 6021da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 6031da177e4SLinus Torvalds return; 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds out_permanent: 6061da177e4SLinus Torvalds printk(KERN_ERR "Attempt to override permanent protocol %d.\n", 6071da177e4SLinus Torvalds protocol); 6081da177e4SLinus Torvalds goto out; 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds out_illegal: 6111da177e4SLinus Torvalds printk(KERN_ERR 6121da177e4SLinus Torvalds "Ignoring attempt to register invalid socket type %d.\n", 6131da177e4SLinus Torvalds p->type); 6141da177e4SLinus Torvalds goto out; 6151da177e4SLinus Torvalds } 6161da177e4SLinus Torvalds 6177159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_register_protosw); 6187159039aSYOSHIFUJI Hideaki 6191da177e4SLinus Torvalds void 6201da177e4SLinus Torvalds inet6_unregister_protosw(struct inet_protosw *p) 6211da177e4SLinus Torvalds { 6221da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & p->flags) { 6231da177e4SLinus Torvalds printk(KERN_ERR 6241da177e4SLinus Torvalds "Attempt to unregister permanent protocol %d.\n", 6251da177e4SLinus Torvalds p->protocol); 6261da177e4SLinus Torvalds } else { 6271da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 6281da177e4SLinus Torvalds list_del_rcu(&p->list); 6291da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 6301da177e4SLinus Torvalds 6311da177e4SLinus Torvalds synchronize_net(); 6321da177e4SLinus Torvalds } 6331da177e4SLinus Torvalds } 6341da177e4SLinus Torvalds 6357159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_unregister_protosw); 6367159039aSYOSHIFUJI Hideaki 637b9750ce1SArnaldo Carvalho de Melo int inet6_sk_rebuild_header(struct sock *sk) 638b9750ce1SArnaldo Carvalho de Melo { 639b9750ce1SArnaldo Carvalho de Melo int err; 640b9750ce1SArnaldo Carvalho de Melo struct dst_entry *dst; 641b9750ce1SArnaldo Carvalho de Melo struct ipv6_pinfo *np = inet6_sk(sk); 642b9750ce1SArnaldo Carvalho de Melo 643b9750ce1SArnaldo Carvalho de Melo dst = __sk_dst_check(sk, np->dst_cookie); 644b9750ce1SArnaldo Carvalho de Melo 645b9750ce1SArnaldo Carvalho de Melo if (dst == NULL) { 646b9750ce1SArnaldo Carvalho de Melo struct inet_sock *inet = inet_sk(sk); 647b9750ce1SArnaldo Carvalho de Melo struct in6_addr *final_p = NULL, final; 648b9750ce1SArnaldo Carvalho de Melo struct flowi fl; 649b9750ce1SArnaldo Carvalho de Melo 650b9750ce1SArnaldo Carvalho de Melo memset(&fl, 0, sizeof(fl)); 651b9750ce1SArnaldo Carvalho de Melo fl.proto = sk->sk_protocol; 652b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, &np->daddr); 653b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_src, &np->saddr); 654b9750ce1SArnaldo Carvalho de Melo fl.fl6_flowlabel = np->flow_label; 655b9750ce1SArnaldo Carvalho de Melo fl.oif = sk->sk_bound_dev_if; 656b9750ce1SArnaldo Carvalho de Melo fl.fl_ip_dport = inet->dport; 657b9750ce1SArnaldo Carvalho de Melo fl.fl_ip_sport = inet->sport; 658beb8d13bSVenkat Yekkirala security_sk_classify_flow(sk, &fl); 659b9750ce1SArnaldo Carvalho de Melo 660b9750ce1SArnaldo Carvalho de Melo if (np->opt && np->opt->srcrt) { 661b9750ce1SArnaldo Carvalho de Melo struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; 662b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&final, &fl.fl6_dst); 663b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, rt0->addr); 664b9750ce1SArnaldo Carvalho de Melo final_p = &final; 665b9750ce1SArnaldo Carvalho de Melo } 666b9750ce1SArnaldo Carvalho de Melo 667b9750ce1SArnaldo Carvalho de Melo err = ip6_dst_lookup(sk, &dst, &fl); 668b9750ce1SArnaldo Carvalho de Melo if (err) { 669b9750ce1SArnaldo Carvalho de Melo sk->sk_route_caps = 0; 670b9750ce1SArnaldo Carvalho de Melo return err; 671b9750ce1SArnaldo Carvalho de Melo } 672b9750ce1SArnaldo Carvalho de Melo if (final_p) 673b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, final_p); 674b9750ce1SArnaldo Carvalho de Melo 675b9750ce1SArnaldo Carvalho de Melo if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) { 676b9750ce1SArnaldo Carvalho de Melo sk->sk_err_soft = -err; 677b9750ce1SArnaldo Carvalho de Melo return err; 678b9750ce1SArnaldo Carvalho de Melo } 679b9750ce1SArnaldo Carvalho de Melo 6808e1ef0a9SYOSHIFUJI Hideaki __ip6_dst_store(sk, dst, NULL, NULL); 681b9750ce1SArnaldo Carvalho de Melo } 682b9750ce1SArnaldo Carvalho de Melo 683b9750ce1SArnaldo Carvalho de Melo return 0; 684b9750ce1SArnaldo Carvalho de Melo } 685b9750ce1SArnaldo Carvalho de Melo 686b9750ce1SArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); 687b9750ce1SArnaldo Carvalho de Melo 688399c07deSArnaldo Carvalho de Melo int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) 689399c07deSArnaldo Carvalho de Melo { 690399c07deSArnaldo Carvalho de Melo struct ipv6_pinfo *np = inet6_sk(sk); 691399c07deSArnaldo Carvalho de Melo struct inet6_skb_parm *opt = IP6CB(skb); 692399c07deSArnaldo Carvalho de Melo 693399c07deSArnaldo Carvalho de Melo if (np->rxopt.all) { 694399c07deSArnaldo Carvalho de Melo if ((opt->hop && (np->rxopt.bits.hopopts || 695399c07deSArnaldo Carvalho de Melo np->rxopt.bits.ohopopts)) || 696d56f90a7SArnaldo Carvalho de Melo ((IPV6_FLOWINFO_MASK & 697d56f90a7SArnaldo Carvalho de Melo *(__be32 *)skb_network_header(skb)) && 698399c07deSArnaldo Carvalho de Melo np->rxopt.bits.rxflow) || 699399c07deSArnaldo Carvalho de Melo (opt->srcrt && (np->rxopt.bits.srcrt || 700399c07deSArnaldo Carvalho de Melo np->rxopt.bits.osrcrt)) || 701399c07deSArnaldo Carvalho de Melo ((opt->dst1 || opt->dst0) && 702399c07deSArnaldo Carvalho de Melo (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) 703399c07deSArnaldo Carvalho de Melo return 1; 704399c07deSArnaldo Carvalho de Melo } 705399c07deSArnaldo Carvalho de Melo return 0; 706399c07deSArnaldo Carvalho de Melo } 707399c07deSArnaldo Carvalho de Melo 708399c07deSArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(ipv6_opt_accepted); 709399c07deSArnaldo Carvalho de Melo 7101da177e4SLinus Torvalds int 7111da177e4SLinus Torvalds snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign) 7121da177e4SLinus Torvalds { 7131da177e4SLinus Torvalds if (ptr == NULL) 7141da177e4SLinus Torvalds return -EINVAL; 7151da177e4SLinus Torvalds 716f9f75005SPekka Enberg ptr[0] = __alloc_percpu(mibsize); 7171da177e4SLinus Torvalds if (!ptr[0]) 7181da177e4SLinus Torvalds goto err0; 7191da177e4SLinus Torvalds 720f9f75005SPekka Enberg ptr[1] = __alloc_percpu(mibsize); 7211da177e4SLinus Torvalds if (!ptr[1]) 7221da177e4SLinus Torvalds goto err1; 7231da177e4SLinus Torvalds 7241da177e4SLinus Torvalds return 0; 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvalds err1: 7271da177e4SLinus Torvalds free_percpu(ptr[0]); 7281da177e4SLinus Torvalds ptr[0] = NULL; 7291da177e4SLinus Torvalds err0: 7301da177e4SLinus Torvalds return -ENOMEM; 7311da177e4SLinus Torvalds } 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds void 7341da177e4SLinus Torvalds snmp6_mib_free(void *ptr[2]) 7351da177e4SLinus Torvalds { 7361da177e4SLinus Torvalds if (ptr == NULL) 7371da177e4SLinus Torvalds return; 7381da177e4SLinus Torvalds free_percpu(ptr[0]); 7391da177e4SLinus Torvalds free_percpu(ptr[1]); 7401da177e4SLinus Torvalds ptr[0] = ptr[1] = NULL; 7411da177e4SLinus Torvalds } 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds static int __init init_ipv6_mibs(void) 7441da177e4SLinus Torvalds { 7451da177e4SLinus Torvalds if (snmp6_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib), 7461da177e4SLinus Torvalds __alignof__(struct ipstats_mib)) < 0) 7471da177e4SLinus Torvalds goto err_ip_mib; 7481da177e4SLinus Torvalds if (snmp6_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib), 7491da177e4SLinus Torvalds __alignof__(struct icmpv6_mib)) < 0) 7501da177e4SLinus Torvalds goto err_icmp_mib; 7511da177e4SLinus Torvalds if (snmp6_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib), 7521da177e4SLinus Torvalds __alignof__(struct udp_mib)) < 0) 7531da177e4SLinus Torvalds goto err_udp_mib; 754ba4e58ecSGerrit Renker if (snmp6_mib_init((void **)udplite_stats_in6, sizeof (struct udp_mib), 755ba4e58ecSGerrit Renker __alignof__(struct udp_mib)) < 0) 756ba4e58ecSGerrit Renker goto err_udplite_mib; 7571da177e4SLinus Torvalds return 0; 7581da177e4SLinus Torvalds 759ba4e58ecSGerrit Renker err_udplite_mib: 760ba4e58ecSGerrit Renker snmp6_mib_free((void **)udp_stats_in6); 7611da177e4SLinus Torvalds err_udp_mib: 7621da177e4SLinus Torvalds snmp6_mib_free((void **)icmpv6_statistics); 7631da177e4SLinus Torvalds err_icmp_mib: 7641da177e4SLinus Torvalds snmp6_mib_free((void **)ipv6_statistics); 7651da177e4SLinus Torvalds err_ip_mib: 7661da177e4SLinus Torvalds return -ENOMEM; 7671da177e4SLinus Torvalds 7681da177e4SLinus Torvalds } 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds static void cleanup_ipv6_mibs(void) 7711da177e4SLinus Torvalds { 7721da177e4SLinus Torvalds snmp6_mib_free((void **)ipv6_statistics); 7731da177e4SLinus Torvalds snmp6_mib_free((void **)icmpv6_statistics); 7741da177e4SLinus Torvalds snmp6_mib_free((void **)udp_stats_in6); 775ba4e58ecSGerrit Renker snmp6_mib_free((void **)udplite_stats_in6); 7761da177e4SLinus Torvalds } 7771da177e4SLinus Torvalds 7781da177e4SLinus Torvalds static int __init inet6_init(void) 7791da177e4SLinus Torvalds { 7801da177e4SLinus Torvalds struct sk_buff *dummy_skb; 7811da177e4SLinus Torvalds struct list_head *r; 7821da177e4SLinus Torvalds int err; 7831da177e4SLinus Torvalds 784ef047f5eSYOSHIFUJI Hideaki BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); 785ef047f5eSYOSHIFUJI Hideaki 7861da177e4SLinus Torvalds #ifdef MODULE 7871da177e4SLinus Torvalds #if 0 /* FIXME --RR */ 7881da177e4SLinus Torvalds if (!mod_member_present(&__this_module, can_unload)) 7891da177e4SLinus Torvalds return -EINVAL; 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds __this_module.can_unload = &ipv6_unload; 7921da177e4SLinus Torvalds #endif 7931da177e4SLinus Torvalds #endif 7941da177e4SLinus Torvalds 7951da177e4SLinus Torvalds err = proto_register(&tcpv6_prot, 1); 7961da177e4SLinus Torvalds if (err) 7971da177e4SLinus Torvalds goto out; 7981da177e4SLinus Torvalds 7991da177e4SLinus Torvalds err = proto_register(&udpv6_prot, 1); 8001da177e4SLinus Torvalds if (err) 8011da177e4SLinus Torvalds goto out_unregister_tcp_proto; 8021da177e4SLinus Torvalds 803ba4e58ecSGerrit Renker err = proto_register(&udplitev6_prot, 1); 8041da177e4SLinus Torvalds if (err) 8051da177e4SLinus Torvalds goto out_unregister_udp_proto; 8061da177e4SLinus Torvalds 807ba4e58ecSGerrit Renker err = proto_register(&rawv6_prot, 1); 808ba4e58ecSGerrit Renker if (err) 809ba4e58ecSGerrit Renker goto out_unregister_udplite_proto; 810ba4e58ecSGerrit Renker 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds /* Register the socket-side information for inet6_create. */ 8131da177e4SLinus Torvalds for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) 8141da177e4SLinus Torvalds INIT_LIST_HEAD(r); 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds /* We MUST register RAW sockets before we create the ICMP6, 8171da177e4SLinus Torvalds * IGMP6, or NDISC control sockets. 8181da177e4SLinus Torvalds */ 8191da177e4SLinus Torvalds inet6_register_protosw(&rawv6_protosw); 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds /* Register the family here so that the init calls below will 8221da177e4SLinus Torvalds * be able to create sockets. (?? is this dangerous ??) 8231da177e4SLinus Torvalds */ 8248eb55910SDavid S. Miller err = sock_register(&inet6_family_ops); 8258eb55910SDavid S. Miller if (err) 8268eb55910SDavid S. Miller goto out_unregister_raw_proto; 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds /* Initialise ipv6 mibs */ 8291da177e4SLinus Torvalds err = init_ipv6_mibs(); 8301da177e4SLinus Torvalds if (err) 8318eb55910SDavid S. Miller goto out_unregister_sock; 8321da177e4SLinus Torvalds 8331da177e4SLinus Torvalds /* 8341da177e4SLinus Torvalds * ipngwg API draft makes clear that the correct semantics 8351da177e4SLinus Torvalds * for TCP and UDP is to consider one TCP and UDP instance 8361da177e4SLinus Torvalds * in a host availiable by both INET and INET6 APIs and 8371da177e4SLinus Torvalds * able to communicate via both network protocols. 8381da177e4SLinus Torvalds */ 8391da177e4SLinus Torvalds 8401da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 8411da177e4SLinus Torvalds ipv6_sysctl_register(); 8421da177e4SLinus Torvalds #endif 8431da177e4SLinus Torvalds err = icmpv6_init(&inet6_family_ops); 8441da177e4SLinus Torvalds if (err) 8451da177e4SLinus Torvalds goto icmp_fail; 8461da177e4SLinus Torvalds err = ndisc_init(&inet6_family_ops); 8471da177e4SLinus Torvalds if (err) 8481da177e4SLinus Torvalds goto ndisc_fail; 8491da177e4SLinus Torvalds err = igmp6_init(&inet6_family_ops); 8501da177e4SLinus Torvalds if (err) 8511da177e4SLinus Torvalds goto igmp_fail; 8522cc7d573SHarald Welte err = ipv6_netfilter_init(); 8532cc7d573SHarald Welte if (err) 8542cc7d573SHarald Welte goto netfilter_fail; 8551da177e4SLinus Torvalds /* Create /proc/foo6 entries. */ 8561da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 8571da177e4SLinus Torvalds err = -ENOMEM; 8581da177e4SLinus Torvalds if (raw6_proc_init()) 8591da177e4SLinus Torvalds goto proc_raw6_fail; 8601da177e4SLinus Torvalds if (tcp6_proc_init()) 8611da177e4SLinus Torvalds goto proc_tcp6_fail; 8621da177e4SLinus Torvalds if (udp6_proc_init()) 8631da177e4SLinus Torvalds goto proc_udp6_fail; 864ba4e58ecSGerrit Renker if (udplite6_proc_init()) 865ba4e58ecSGerrit Renker goto proc_udplite6_fail; 8661da177e4SLinus Torvalds if (ipv6_misc_proc_init()) 8671da177e4SLinus Torvalds goto proc_misc6_fail; 8681da177e4SLinus Torvalds 8691da177e4SLinus Torvalds if (ac6_proc_init()) 8701da177e4SLinus Torvalds goto proc_anycast6_fail; 8711da177e4SLinus Torvalds if (if6_proc_init()) 8721da177e4SLinus Torvalds goto proc_if6_fail; 8731da177e4SLinus Torvalds #endif 8741da177e4SLinus Torvalds ip6_route_init(); 8751da177e4SLinus Torvalds ip6_flowlabel_init(); 8761da177e4SLinus Torvalds err = addrconf_init(); 8771da177e4SLinus Torvalds if (err) 8781da177e4SLinus Torvalds goto addrconf_fail; 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds /* Init v6 extension headers. */ 8811da177e4SLinus Torvalds ipv6_rthdr_init(); 8821da177e4SLinus Torvalds ipv6_frag_init(); 8831da177e4SLinus Torvalds ipv6_nodata_init(); 8841da177e4SLinus Torvalds ipv6_destopt_init(); 8852c8d7ca0SNoriaki TAKAMIYA #ifdef CONFIG_IPV6_MIP6 8862c8d7ca0SNoriaki TAKAMIYA mip6_init(); 8872c8d7ca0SNoriaki TAKAMIYA #endif 8881da177e4SLinus Torvalds 8891da177e4SLinus Torvalds /* Init v6 transport protocols. */ 8901da177e4SLinus Torvalds udpv6_init(); 891ba4e58ecSGerrit Renker udplitev6_init(); 8921da177e4SLinus Torvalds tcpv6_init(); 893e2ed4052SHerbert Xu 894e2ed4052SHerbert Xu ipv6_packet_init(); 8951da177e4SLinus Torvalds err = 0; 8961da177e4SLinus Torvalds out: 8971da177e4SLinus Torvalds return err; 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds addrconf_fail: 9001da177e4SLinus Torvalds ip6_flowlabel_cleanup(); 9011da177e4SLinus Torvalds ip6_route_cleanup(); 9021da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 9031da177e4SLinus Torvalds if6_proc_exit(); 9041da177e4SLinus Torvalds proc_if6_fail: 9051da177e4SLinus Torvalds ac6_proc_exit(); 9061da177e4SLinus Torvalds proc_anycast6_fail: 9071da177e4SLinus Torvalds ipv6_misc_proc_exit(); 9081da177e4SLinus Torvalds proc_misc6_fail: 909ba4e58ecSGerrit Renker udplite6_proc_exit(); 910ba4e58ecSGerrit Renker proc_udplite6_fail: 9111da177e4SLinus Torvalds udp6_proc_exit(); 9121da177e4SLinus Torvalds proc_udp6_fail: 9131da177e4SLinus Torvalds tcp6_proc_exit(); 9141da177e4SLinus Torvalds proc_tcp6_fail: 9151da177e4SLinus Torvalds raw6_proc_exit(); 9161da177e4SLinus Torvalds proc_raw6_fail: 9171da177e4SLinus Torvalds #endif 9182cc7d573SHarald Welte ipv6_netfilter_fini(); 9192cc7d573SHarald Welte netfilter_fail: 9201da177e4SLinus Torvalds igmp6_cleanup(); 9211da177e4SLinus Torvalds igmp_fail: 9221da177e4SLinus Torvalds ndisc_cleanup(); 9231da177e4SLinus Torvalds ndisc_fail: 9241da177e4SLinus Torvalds icmpv6_cleanup(); 9251da177e4SLinus Torvalds icmp_fail: 9261da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 9271da177e4SLinus Torvalds ipv6_sysctl_unregister(); 9281da177e4SLinus Torvalds #endif 9291da177e4SLinus Torvalds cleanup_ipv6_mibs(); 9308eb55910SDavid S. Miller out_unregister_sock: 9318eb55910SDavid S. Miller sock_unregister(PF_INET6); 9321da177e4SLinus Torvalds out_unregister_raw_proto: 9331da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 934ba4e58ecSGerrit Renker out_unregister_udplite_proto: 935ba4e58ecSGerrit Renker proto_unregister(&udplitev6_prot); 9361da177e4SLinus Torvalds out_unregister_udp_proto: 9371da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 9381da177e4SLinus Torvalds out_unregister_tcp_proto: 9391da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 9401da177e4SLinus Torvalds goto out; 9411da177e4SLinus Torvalds } 9421da177e4SLinus Torvalds module_init(inet6_init); 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds static void __exit inet6_exit(void) 9451da177e4SLinus Torvalds { 9461da177e4SLinus Torvalds /* First of all disallow new sockets creation. */ 9471da177e4SLinus Torvalds sock_unregister(PF_INET6); 948ca17c233SJoe Jin 949ca17c233SJoe Jin /* Cleanup code parts. */ 950ca17c233SJoe Jin ipv6_packet_cleanup(); 9512c8d7ca0SNoriaki TAKAMIYA #ifdef CONFIG_IPV6_MIP6 9522c8d7ca0SNoriaki TAKAMIYA mip6_fini(); 9532c8d7ca0SNoriaki TAKAMIYA #endif 9541da177e4SLinus Torvalds addrconf_cleanup(); 955ca17c233SJoe Jin ip6_flowlabel_cleanup(); 9561da177e4SLinus Torvalds ip6_route_cleanup(); 957ca17c233SJoe Jin #ifdef CONFIG_PROC_FS 958ca17c233SJoe Jin 959ca17c233SJoe Jin /* Cleanup code parts. */ 960ca17c233SJoe Jin if6_proc_exit(); 961ca17c233SJoe Jin ac6_proc_exit(); 962ca17c233SJoe Jin ipv6_misc_proc_exit(); 963ca17c233SJoe Jin udplite6_proc_exit(); 964ca17c233SJoe Jin udp6_proc_exit(); 965ca17c233SJoe Jin tcp6_proc_exit(); 966ca17c233SJoe Jin raw6_proc_exit(); 967ca17c233SJoe Jin #endif 9682cc7d573SHarald Welte ipv6_netfilter_fini(); 969ca17c233SJoe Jin igmp6_cleanup(); 9701da177e4SLinus Torvalds ndisc_cleanup(); 9711da177e4SLinus Torvalds icmpv6_cleanup(); 9721da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 9731da177e4SLinus Torvalds ipv6_sysctl_unregister(); 9741da177e4SLinus Torvalds #endif 9751da177e4SLinus Torvalds cleanup_ipv6_mibs(); 9761da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 977ca17c233SJoe Jin proto_unregister(&udplitev6_prot); 9781da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 9791da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 9801da177e4SLinus Torvalds } 9811da177e4SLinus Torvalds module_exit(inet6_exit); 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvalds MODULE_ALIAS_NETPROTO(PF_INET6); 984