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 * Fixes: 111da177e4SLinus Torvalds * piggy, Karl Knutson : Socket protocol table 121da177e4SLinus Torvalds * Hideaki YOSHIFUJI : sin6_scope_id support 131da177e4SLinus Torvalds * Arnaldo Melo : check proc_net_create return, cleanups 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 161da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 171da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 181da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 191da177e4SLinus Torvalds */ 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds #include <linux/module.h> 234fc268d2SRandy Dunlap #include <linux/capability.h> 241da177e4SLinus Torvalds #include <linux/errno.h> 251da177e4SLinus Torvalds #include <linux/types.h> 261da177e4SLinus Torvalds #include <linux/socket.h> 271da177e4SLinus Torvalds #include <linux/in.h> 281da177e4SLinus Torvalds #include <linux/kernel.h> 291da177e4SLinus Torvalds #include <linux/timer.h> 301da177e4SLinus Torvalds #include <linux/string.h> 311da177e4SLinus Torvalds #include <linux/sockios.h> 321da177e4SLinus Torvalds #include <linux/net.h> 331da177e4SLinus Torvalds #include <linux/fcntl.h> 341da177e4SLinus Torvalds #include <linux/mm.h> 351da177e4SLinus Torvalds #include <linux/interrupt.h> 361da177e4SLinus Torvalds #include <linux/proc_fs.h> 371da177e4SLinus Torvalds #include <linux/stat.h> 381da177e4SLinus Torvalds #include <linux/init.h> 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds #include <linux/inet.h> 411da177e4SLinus Torvalds #include <linux/netdevice.h> 421da177e4SLinus Torvalds #include <linux/icmpv6.h> 432cc7d573SHarald Welte #include <linux/netfilter_ipv6.h> 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds #include <net/ip.h> 461da177e4SLinus Torvalds #include <net/ipv6.h> 471da177e4SLinus Torvalds #include <net/udp.h> 48ba4e58ecSGerrit Renker #include <net/udplite.h> 491da177e4SLinus Torvalds #include <net/tcp.h> 501da177e4SLinus Torvalds #include <net/ipip.h> 511da177e4SLinus Torvalds #include <net/protocol.h> 521da177e4SLinus Torvalds #include <net/inet_common.h> 531668e010SKOVACS Krisztian #include <net/route.h> 541da177e4SLinus Torvalds #include <net/transp_v6.h> 551da177e4SLinus Torvalds #include <net/ip6_route.h> 561da177e4SLinus Torvalds #include <net/addrconf.h> 571da177e4SLinus Torvalds #ifdef CONFIG_IPV6_TUNNEL 581da177e4SLinus Torvalds #include <net/ip6_tunnel.h> 591da177e4SLinus Torvalds #endif 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds #include <asm/uaccess.h> 621da177e4SLinus Torvalds #include <asm/system.h> 637bc570c8SYOSHIFUJI Hideaki #include <linux/mroute6.h> 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds MODULE_AUTHOR("Cast of dozens"); 661da177e4SLinus Torvalds MODULE_DESCRIPTION("IPv6 protocol stack for Linux"); 671da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 681da177e4SLinus Torvalds 69f1267347SPavel Emelyanov /* The inetsw6 table contains everything that inet6_create needs to 701da177e4SLinus Torvalds * build a new socket. 711da177e4SLinus Torvalds */ 721da177e4SLinus Torvalds static struct list_head inetsw6[SOCK_MAX]; 731da177e4SLinus Torvalds static DEFINE_SPINLOCK(inetsw6_lock); 741da177e4SLinus Torvalds 75fe7ca2e1SBrian Haley static int disable_ipv6 = 0; 76fe7ca2e1SBrian Haley module_param_named(disable, disable_ipv6, int, 0); 77fe7ca2e1SBrian Haley MODULE_PARM_DESC(disable, "Disable IPv6 such that it is non-functional"); 78fe7ca2e1SBrian Haley 791da177e4SLinus Torvalds static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk) 801da177e4SLinus Torvalds { 811da177e4SLinus Torvalds const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo); 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds return (struct ipv6_pinfo *)(((u8 *)sk) + offset); 841da177e4SLinus Torvalds } 851da177e4SLinus Torvalds 861b8d7ae4SEric W. Biederman static int inet6_create(struct net *net, struct socket *sock, int protocol) 871da177e4SLinus Torvalds { 881da177e4SLinus Torvalds struct inet_sock *inet; 891da177e4SLinus Torvalds struct ipv6_pinfo *np; 901da177e4SLinus Torvalds struct sock *sk; 911da177e4SLinus Torvalds struct inet_protosw *answer; 921da177e4SLinus Torvalds struct proto *answer_prot; 931da177e4SLinus Torvalds unsigned char answer_flags; 941da177e4SLinus Torvalds char answer_no_check; 95af1afe86SYOSHIFUJI Hideaki int try_loading_module = 0; 96af1afe86SYOSHIFUJI Hideaki int err; 971da177e4SLinus Torvalds 98b3da2cf3SDavid S. Miller if (sock->type != SOCK_RAW && 99b3da2cf3SDavid S. Miller sock->type != SOCK_DGRAM && 100b3da2cf3SDavid S. Miller !inet_ehash_secret) 101b3da2cf3SDavid S. Miller build_ehash_secret(); 102b3da2cf3SDavid S. Miller 1031da177e4SLinus Torvalds /* Look for the requested type/protocol pair. */ 104af1afe86SYOSHIFUJI Hideaki lookup_protocol: 105af1afe86SYOSHIFUJI Hideaki err = -ESOCKTNOSUPPORT; 1061da177e4SLinus Torvalds rcu_read_lock(); 107696adfe8SPaul E. McKenney list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) { 1081da177e4SLinus Torvalds 109696adfe8SPaul E. McKenney err = 0; 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 } 1251da177e4SLinus Torvalds 126696adfe8SPaul E. McKenney if (err) { 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 158547b792cSIlpo Järvinen WARN_ON(answer_prot->slab == NULL); 1591da177e4SLinus Torvalds 160af1afe86SYOSHIFUJI Hideaki err = -ENOBUFS; 1616257ff21SPavel Emelyanov sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot); 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; 1922e761e05SPavel Emelyanov np->ipv6only = net->ipv6.sysctl.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); 2493b1e0a65SYOSHIFUJI Hideaki struct net *net = sock_net(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) { 27963d9950bSVlad Yasevich int chk_addr_ret; 28063d9950bSVlad Yasevich 281783ed5a7SVlad Yasevich /* Binding to v4-mapped address on a v6-only socket 282783ed5a7SVlad Yasevich * makes no sense 283783ed5a7SVlad Yasevich */ 284783ed5a7SVlad Yasevich if (np->ipv6only) { 285783ed5a7SVlad Yasevich err = -EINVAL; 286783ed5a7SVlad Yasevich goto out; 287783ed5a7SVlad Yasevich } 28863d9950bSVlad Yasevich 28963d9950bSVlad Yasevich /* Reproduce AF_INET checks to make the bindings consitant */ 2901da177e4SLinus Torvalds v4addr = addr->sin6_addr.s6_addr32[3]; 29163d9950bSVlad Yasevich chk_addr_ret = inet_addr_type(net, v4addr); 29263d9950bSVlad Yasevich if (!sysctl_ip_nonlocal_bind && 29363d9950bSVlad Yasevich !(inet->freebind || inet->transparent) && 29463d9950bSVlad Yasevich v4addr != htonl(INADDR_ANY) && 29563d9950bSVlad Yasevich chk_addr_ret != RTN_LOCAL && 29663d9950bSVlad Yasevich chk_addr_ret != RTN_MULTICAST && 29763d9950bSVlad Yasevich chk_addr_ret != RTN_BROADCAST) 2981da177e4SLinus Torvalds goto out; 2991da177e4SLinus Torvalds } else { 3001da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) { 3011da177e4SLinus Torvalds struct net_device *dev = NULL; 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds if (addr_type & IPV6_ADDR_LINKLOCAL) { 3041da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 3051da177e4SLinus Torvalds addr->sin6_scope_id) { 3061da177e4SLinus Torvalds /* Override any existing binding, if another one 3071da177e4SLinus Torvalds * is supplied by user. 3081da177e4SLinus Torvalds */ 3091da177e4SLinus Torvalds sk->sk_bound_dev_if = addr->sin6_scope_id; 3101da177e4SLinus Torvalds } 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds /* Binding to link-local address requires an interface */ 3131da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) { 3141da177e4SLinus Torvalds err = -EINVAL; 3151da177e4SLinus Torvalds goto out; 3161da177e4SLinus Torvalds } 317075de939SBenjamin Thery dev = dev_get_by_index(net, sk->sk_bound_dev_if); 3181da177e4SLinus Torvalds if (!dev) { 3191da177e4SLinus Torvalds err = -ENODEV; 3201da177e4SLinus Torvalds goto out; 3211da177e4SLinus Torvalds } 3221da177e4SLinus Torvalds } 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds /* ipv4 addr of the socket is invalid. Only the 3251da177e4SLinus Torvalds * unspecified and mapped address have a v4 equivalent. 3261da177e4SLinus Torvalds */ 3271da177e4SLinus Torvalds v4addr = LOOPBACK4_IPV6; 3281da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) { 329075de939SBenjamin Thery if (!ipv6_chk_addr(net, &addr->sin6_addr, 330bfeade08SDaniel Lezcano dev, 0)) { 3311da177e4SLinus Torvalds if (dev) 3321da177e4SLinus Torvalds dev_put(dev); 3331da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 3341da177e4SLinus Torvalds goto out; 3351da177e4SLinus Torvalds } 3361da177e4SLinus Torvalds } 3371da177e4SLinus Torvalds if (dev) 3381da177e4SLinus Torvalds dev_put(dev); 3391da177e4SLinus Torvalds } 3401da177e4SLinus Torvalds } 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvalds inet->rcv_saddr = v4addr; 3431da177e4SLinus Torvalds inet->saddr = v4addr; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) 3481da177e4SLinus Torvalds ipv6_addr_copy(&np->saddr, &addr->sin6_addr); 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds /* Make sure we are allowed to bind here. */ 3511da177e4SLinus Torvalds if (sk->sk_prot->get_port(sk, snum)) { 3521da177e4SLinus Torvalds inet_reset_saddr(sk); 3531da177e4SLinus Torvalds err = -EADDRINUSE; 3541da177e4SLinus Torvalds goto out; 3551da177e4SLinus Torvalds } 3561da177e4SLinus Torvalds 3570f8d3c7aSVlad Yasevich if (addr_type != IPV6_ADDR_ANY) { 3581da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDADDR_LOCK; 3590f8d3c7aSVlad Yasevich if (addr_type != IPV6_ADDR_MAPPED) 3600f8d3c7aSVlad Yasevich np->ipv6only = 1; 3610f8d3c7aSVlad Yasevich } 3621da177e4SLinus Torvalds if (snum) 3631da177e4SLinus Torvalds sk->sk_userlocks |= SOCK_BINDPORT_LOCK; 364e69a4adcSAl Viro inet->sport = htons(inet->num); 3651da177e4SLinus Torvalds inet->dport = 0; 3661da177e4SLinus Torvalds inet->daddr = 0; 3671da177e4SLinus Torvalds out: 3681da177e4SLinus Torvalds release_sock(sk); 3691da177e4SLinus Torvalds return err; 3701da177e4SLinus Torvalds } 3711da177e4SLinus Torvalds 3727159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_bind); 3737159039aSYOSHIFUJI Hideaki 3741da177e4SLinus Torvalds int inet6_release(struct socket *sock) 3751da177e4SLinus Torvalds { 3761da177e4SLinus Torvalds struct sock *sk = sock->sk; 3771da177e4SLinus Torvalds 3781da177e4SLinus Torvalds if (sk == NULL) 3791da177e4SLinus Torvalds return -EINVAL; 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds /* Free mc lists */ 3821da177e4SLinus Torvalds ipv6_sock_mc_close(sk); 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds /* Free ac lists */ 3851da177e4SLinus Torvalds ipv6_sock_ac_close(sk); 3861da177e4SLinus Torvalds 3871da177e4SLinus Torvalds return inet_release(sock); 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 3907159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_release); 3917159039aSYOSHIFUJI Hideaki 3927d06b2e0SBrian Haley void inet6_destroy_sock(struct sock *sk) 3931da177e4SLinus Torvalds { 3941da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 3951da177e4SLinus Torvalds struct sk_buff *skb; 3961da177e4SLinus Torvalds struct ipv6_txoptions *opt; 3971da177e4SLinus Torvalds 3981da177e4SLinus Torvalds /* Release rx options */ 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds if ((skb = xchg(&np->pktoptions, NULL)) != NULL) 4011da177e4SLinus Torvalds kfree_skb(skb); 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds /* Free flowlabels */ 4041da177e4SLinus Torvalds fl6_free_socklist(sk); 4051da177e4SLinus Torvalds 4061da177e4SLinus Torvalds /* Free tx options */ 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds if ((opt = xchg(&np->opt, NULL)) != NULL) 4091da177e4SLinus Torvalds sock_kfree_s(sk, opt, opt->tot_len); 4101da177e4SLinus Torvalds } 4111da177e4SLinus Torvalds 4123cf3dc6cSArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(inet6_destroy_sock); 4133cf3dc6cSArnaldo Carvalho de Melo 4141da177e4SLinus Torvalds /* 4151da177e4SLinus Torvalds * This does both peername and sockname. 4161da177e4SLinus Torvalds */ 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds int inet6_getname(struct socket *sock, struct sockaddr *uaddr, 4191da177e4SLinus Torvalds int *uaddr_len, int peer) 4201da177e4SLinus Torvalds { 4211da177e4SLinus Torvalds struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr; 4221da177e4SLinus Torvalds struct sock *sk = sock->sk; 4231da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 4241da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds sin->sin6_family = AF_INET6; 4271da177e4SLinus Torvalds sin->sin6_flowinfo = 0; 4281da177e4SLinus Torvalds sin->sin6_scope_id = 0; 4291da177e4SLinus Torvalds if (peer) { 4301da177e4SLinus Torvalds if (!inet->dport) 4311da177e4SLinus Torvalds return -ENOTCONN; 4321da177e4SLinus Torvalds if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && 4331da177e4SLinus Torvalds peer == 1) 4341da177e4SLinus Torvalds return -ENOTCONN; 4351da177e4SLinus Torvalds sin->sin6_port = inet->dport; 4361da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->daddr); 4371da177e4SLinus Torvalds if (np->sndflow) 4381da177e4SLinus Torvalds sin->sin6_flowinfo = np->flow_label; 4391da177e4SLinus Torvalds } else { 4401da177e4SLinus Torvalds if (ipv6_addr_any(&np->rcv_saddr)) 4411da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->saddr); 4421da177e4SLinus Torvalds else 4431da177e4SLinus Torvalds ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr); 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds sin->sin6_port = inet->sport; 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) 4481da177e4SLinus Torvalds sin->sin6_scope_id = sk->sk_bound_dev_if; 4491da177e4SLinus Torvalds *uaddr_len = sizeof(*sin); 4501da177e4SLinus Torvalds return(0); 4511da177e4SLinus Torvalds } 4521da177e4SLinus Torvalds 4537159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_getname); 4547159039aSYOSHIFUJI Hideaki 4551da177e4SLinus Torvalds int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 4561da177e4SLinus Torvalds { 4571da177e4SLinus Torvalds struct sock *sk = sock->sk; 4583b1e0a65SYOSHIFUJI Hideaki struct net *net = sock_net(sk); 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds switch(cmd) 4611da177e4SLinus Torvalds { 4621da177e4SLinus Torvalds case SIOCGSTAMP: 4631da177e4SLinus Torvalds return sock_get_timestamp(sk, (struct timeval __user *)arg); 4641da177e4SLinus Torvalds 465ae40eb1eSEric Dumazet case SIOCGSTAMPNS: 466ae40eb1eSEric Dumazet return sock_get_timestampns(sk, (struct timespec __user *)arg); 467ae40eb1eSEric Dumazet 4681da177e4SLinus Torvalds case SIOCADDRT: 4691da177e4SLinus Torvalds case SIOCDELRT: 4701da177e4SLinus Torvalds 4715578689aSDaniel Lezcano return(ipv6_route_ioctl(net, cmd, (void __user *)arg)); 4721da177e4SLinus Torvalds 4731da177e4SLinus Torvalds case SIOCSIFADDR: 474af284937SDaniel Lezcano return addrconf_add_ifaddr(net, (void __user *) arg); 4751da177e4SLinus Torvalds case SIOCDIFADDR: 476af284937SDaniel Lezcano return addrconf_del_ifaddr(net, (void __user *) arg); 4771da177e4SLinus Torvalds case SIOCSIFDSTADDR: 478af284937SDaniel Lezcano return addrconf_set_dstaddr(net, (void __user *) arg); 4791da177e4SLinus Torvalds default: 480b5e5fa5eSChristoph Hellwig if (!sk->sk_prot->ioctl) 481b5e5fa5eSChristoph Hellwig return -ENOIOCTLCMD; 482b5e5fa5eSChristoph Hellwig return sk->sk_prot->ioctl(sk, cmd, arg); 4831da177e4SLinus Torvalds } 4841da177e4SLinus Torvalds /*NOTREACHED*/ 4851da177e4SLinus Torvalds return(0); 4861da177e4SLinus Torvalds } 4871da177e4SLinus Torvalds 4887159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_ioctl); 4897159039aSYOSHIFUJI Hideaki 49090ddc4f0SEric Dumazet const struct proto_ops inet6_stream_ops = { 4911da177e4SLinus Torvalds .family = PF_INET6, 4921da177e4SLinus Torvalds .owner = THIS_MODULE, 4931da177e4SLinus Torvalds .release = inet6_release, 4941da177e4SLinus Torvalds .bind = inet6_bind, 4951da177e4SLinus Torvalds .connect = inet_stream_connect, /* ok */ 4961da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 4971da177e4SLinus Torvalds .accept = inet_accept, /* ok */ 4981da177e4SLinus Torvalds .getname = inet6_getname, 4991da177e4SLinus Torvalds .poll = tcp_poll, /* ok */ 5001da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 5011da177e4SLinus Torvalds .listen = inet_listen, /* ok */ 5021da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 5031da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5041da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5053516ffb0SDavid S. Miller .sendmsg = tcp_sendmsg, /* ok */ 506543d9cfeSArnaldo Carvalho de Melo .recvmsg = sock_common_recvmsg, /* ok */ 507543d9cfeSArnaldo Carvalho de Melo .mmap = sock_no_mmap, 508543d9cfeSArnaldo Carvalho de Melo .sendpage = tcp_sendpage, 509a0974dd3SJens Axboe .splice_read = tcp_splice_read, 5103fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 5113fdadf7dSDmitry Mishin .compat_setsockopt = compat_sock_common_setsockopt, 5123fdadf7dSDmitry Mishin .compat_getsockopt = compat_sock_common_getsockopt, 5133fdadf7dSDmitry Mishin #endif 5141da177e4SLinus Torvalds }; 5151da177e4SLinus Torvalds 51690ddc4f0SEric Dumazet const struct proto_ops inet6_dgram_ops = { 5171da177e4SLinus Torvalds .family = PF_INET6, 5181da177e4SLinus Torvalds .owner = THIS_MODULE, 5191da177e4SLinus Torvalds .release = inet6_release, 5201da177e4SLinus Torvalds .bind = inet6_bind, 5211da177e4SLinus Torvalds .connect = inet_dgram_connect, /* ok */ 5221da177e4SLinus Torvalds .socketpair = sock_no_socketpair, /* a do nothing */ 5231da177e4SLinus Torvalds .accept = sock_no_accept, /* a do nothing */ 5241da177e4SLinus Torvalds .getname = inet6_getname, 5251da177e4SLinus Torvalds .poll = udp_poll, /* ok */ 5261da177e4SLinus Torvalds .ioctl = inet6_ioctl, /* must change */ 5271da177e4SLinus Torvalds .listen = sock_no_listen, /* ok */ 5281da177e4SLinus Torvalds .shutdown = inet_shutdown, /* ok */ 5291da177e4SLinus Torvalds .setsockopt = sock_common_setsockopt, /* ok */ 5301da177e4SLinus Torvalds .getsockopt = sock_common_getsockopt, /* ok */ 5311da177e4SLinus Torvalds .sendmsg = inet_sendmsg, /* ok */ 5321da177e4SLinus Torvalds .recvmsg = sock_common_recvmsg, /* ok */ 5331da177e4SLinus Torvalds .mmap = sock_no_mmap, 5341da177e4SLinus Torvalds .sendpage = sock_no_sendpage, 535543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 536543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_sock_common_setsockopt, 537543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_sock_common_getsockopt, 538543d9cfeSArnaldo Carvalho de Melo #endif 5391da177e4SLinus Torvalds }; 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds static struct net_proto_family inet6_family_ops = { 5421da177e4SLinus Torvalds .family = PF_INET6, 5431da177e4SLinus Torvalds .create = inet6_create, 5441da177e4SLinus Torvalds .owner = THIS_MODULE, 5451da177e4SLinus Torvalds }; 5461da177e4SLinus Torvalds 54787c3efbfSDaniel Lezcano int inet6_register_protosw(struct inet_protosw *p) 5481da177e4SLinus Torvalds { 5491da177e4SLinus Torvalds struct list_head *lh; 5501da177e4SLinus Torvalds struct inet_protosw *answer; 5511da177e4SLinus Torvalds struct list_head *last_perm; 55287c3efbfSDaniel Lezcano int protocol = p->protocol; 55387c3efbfSDaniel Lezcano int ret; 5541da177e4SLinus Torvalds 5551da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 5561da177e4SLinus Torvalds 55787c3efbfSDaniel Lezcano ret = -EINVAL; 5581da177e4SLinus Torvalds if (p->type >= SOCK_MAX) 5591da177e4SLinus Torvalds goto out_illegal; 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds /* If we are trying to override a permanent protocol, bail. */ 5621da177e4SLinus Torvalds answer = NULL; 56387c3efbfSDaniel Lezcano ret = -EPERM; 5641da177e4SLinus Torvalds last_perm = &inetsw6[p->type]; 5651da177e4SLinus Torvalds list_for_each(lh, &inetsw6[p->type]) { 5661da177e4SLinus Torvalds answer = list_entry(lh, struct inet_protosw, list); 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds /* Check only the non-wild match. */ 5691da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & answer->flags) { 5701da177e4SLinus Torvalds if (protocol == answer->protocol) 5711da177e4SLinus Torvalds break; 5721da177e4SLinus Torvalds last_perm = lh; 5731da177e4SLinus Torvalds } 5741da177e4SLinus Torvalds 5751da177e4SLinus Torvalds answer = NULL; 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds if (answer) 5781da177e4SLinus Torvalds goto out_permanent; 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvalds /* Add the new entry after the last permanent entry if any, so that 5811da177e4SLinus Torvalds * the new entry does not override a permanent entry when matched with 5821da177e4SLinus Torvalds * a wild-card protocol. But it is allowed to override any existing 5831da177e4SLinus Torvalds * non-permanent entry. This means that when we remove this entry, the 5841da177e4SLinus Torvalds * system automatically returns to the old behavior. 5851da177e4SLinus Torvalds */ 5861da177e4SLinus Torvalds list_add_rcu(&p->list, last_perm); 58787c3efbfSDaniel Lezcano ret = 0; 5881da177e4SLinus Torvalds out: 5891da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 59087c3efbfSDaniel Lezcano return ret; 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvalds out_permanent: 5931da177e4SLinus Torvalds printk(KERN_ERR "Attempt to override permanent protocol %d.\n", 5941da177e4SLinus Torvalds protocol); 5951da177e4SLinus Torvalds goto out; 5961da177e4SLinus Torvalds 5971da177e4SLinus Torvalds out_illegal: 5981da177e4SLinus Torvalds printk(KERN_ERR 5991da177e4SLinus Torvalds "Ignoring attempt to register invalid socket type %d.\n", 6001da177e4SLinus Torvalds p->type); 6011da177e4SLinus Torvalds goto out; 6021da177e4SLinus Torvalds } 6031da177e4SLinus Torvalds 6047159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_register_protosw); 6057159039aSYOSHIFUJI Hideaki 6061da177e4SLinus Torvalds void 6071da177e4SLinus Torvalds inet6_unregister_protosw(struct inet_protosw *p) 6081da177e4SLinus Torvalds { 6091da177e4SLinus Torvalds if (INET_PROTOSW_PERMANENT & p->flags) { 6101da177e4SLinus Torvalds printk(KERN_ERR 6111da177e4SLinus Torvalds "Attempt to unregister permanent protocol %d.\n", 6121da177e4SLinus Torvalds p->protocol); 6131da177e4SLinus Torvalds } else { 6141da177e4SLinus Torvalds spin_lock_bh(&inetsw6_lock); 6151da177e4SLinus Torvalds list_del_rcu(&p->list); 6161da177e4SLinus Torvalds spin_unlock_bh(&inetsw6_lock); 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvalds synchronize_net(); 6191da177e4SLinus Torvalds } 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds 6227159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(inet6_unregister_protosw); 6237159039aSYOSHIFUJI Hideaki 624b9750ce1SArnaldo Carvalho de Melo int inet6_sk_rebuild_header(struct sock *sk) 625b9750ce1SArnaldo Carvalho de Melo { 626b9750ce1SArnaldo Carvalho de Melo int err; 627b9750ce1SArnaldo Carvalho de Melo struct dst_entry *dst; 628b9750ce1SArnaldo Carvalho de Melo struct ipv6_pinfo *np = inet6_sk(sk); 629b9750ce1SArnaldo Carvalho de Melo 630b9750ce1SArnaldo Carvalho de Melo dst = __sk_dst_check(sk, np->dst_cookie); 631b9750ce1SArnaldo Carvalho de Melo 632b9750ce1SArnaldo Carvalho de Melo if (dst == NULL) { 633b9750ce1SArnaldo Carvalho de Melo struct inet_sock *inet = inet_sk(sk); 634b9750ce1SArnaldo Carvalho de Melo struct in6_addr *final_p = NULL, final; 635b9750ce1SArnaldo Carvalho de Melo struct flowi fl; 636b9750ce1SArnaldo Carvalho de Melo 637b9750ce1SArnaldo Carvalho de Melo memset(&fl, 0, sizeof(fl)); 638b9750ce1SArnaldo Carvalho de Melo fl.proto = sk->sk_protocol; 639b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, &np->daddr); 640b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_src, &np->saddr); 641b9750ce1SArnaldo Carvalho de Melo fl.fl6_flowlabel = np->flow_label; 642b9750ce1SArnaldo Carvalho de Melo fl.oif = sk->sk_bound_dev_if; 643b9750ce1SArnaldo Carvalho de Melo fl.fl_ip_dport = inet->dport; 644b9750ce1SArnaldo Carvalho de Melo fl.fl_ip_sport = inet->sport; 645beb8d13bSVenkat Yekkirala security_sk_classify_flow(sk, &fl); 646b9750ce1SArnaldo Carvalho de Melo 647b9750ce1SArnaldo Carvalho de Melo if (np->opt && np->opt->srcrt) { 648b9750ce1SArnaldo Carvalho de Melo struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt; 649b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&final, &fl.fl6_dst); 650b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, rt0->addr); 651b9750ce1SArnaldo Carvalho de Melo final_p = &final; 652b9750ce1SArnaldo Carvalho de Melo } 653b9750ce1SArnaldo Carvalho de Melo 654b9750ce1SArnaldo Carvalho de Melo err = ip6_dst_lookup(sk, &dst, &fl); 655b9750ce1SArnaldo Carvalho de Melo if (err) { 656b9750ce1SArnaldo Carvalho de Melo sk->sk_route_caps = 0; 657b9750ce1SArnaldo Carvalho de Melo return err; 658b9750ce1SArnaldo Carvalho de Melo } 659b9750ce1SArnaldo Carvalho de Melo if (final_p) 660b9750ce1SArnaldo Carvalho de Melo ipv6_addr_copy(&fl.fl6_dst, final_p); 661b9750ce1SArnaldo Carvalho de Melo 66252479b62SAlexey Dobriyan if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0) { 663b9750ce1SArnaldo Carvalho de Melo sk->sk_err_soft = -err; 664b9750ce1SArnaldo Carvalho de Melo return err; 665b9750ce1SArnaldo Carvalho de Melo } 666b9750ce1SArnaldo Carvalho de Melo 6678e1ef0a9SYOSHIFUJI Hideaki __ip6_dst_store(sk, dst, NULL, NULL); 668b9750ce1SArnaldo Carvalho de Melo } 669b9750ce1SArnaldo Carvalho de Melo 670b9750ce1SArnaldo Carvalho de Melo return 0; 671b9750ce1SArnaldo Carvalho de Melo } 672b9750ce1SArnaldo Carvalho de Melo 673b9750ce1SArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header); 674b9750ce1SArnaldo Carvalho de Melo 675399c07deSArnaldo Carvalho de Melo int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb) 676399c07deSArnaldo Carvalho de Melo { 677399c07deSArnaldo Carvalho de Melo struct ipv6_pinfo *np = inet6_sk(sk); 678399c07deSArnaldo Carvalho de Melo struct inet6_skb_parm *opt = IP6CB(skb); 679399c07deSArnaldo Carvalho de Melo 680399c07deSArnaldo Carvalho de Melo if (np->rxopt.all) { 681399c07deSArnaldo Carvalho de Melo if ((opt->hop && (np->rxopt.bits.hopopts || 682399c07deSArnaldo Carvalho de Melo np->rxopt.bits.ohopopts)) || 683d56f90a7SArnaldo Carvalho de Melo ((IPV6_FLOWINFO_MASK & 684d56f90a7SArnaldo Carvalho de Melo *(__be32 *)skb_network_header(skb)) && 685399c07deSArnaldo Carvalho de Melo np->rxopt.bits.rxflow) || 686399c07deSArnaldo Carvalho de Melo (opt->srcrt && (np->rxopt.bits.srcrt || 687399c07deSArnaldo Carvalho de Melo np->rxopt.bits.osrcrt)) || 688399c07deSArnaldo Carvalho de Melo ((opt->dst1 || opt->dst0) && 689399c07deSArnaldo Carvalho de Melo (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts))) 690399c07deSArnaldo Carvalho de Melo return 1; 691399c07deSArnaldo Carvalho de Melo } 692399c07deSArnaldo Carvalho de Melo return 0; 693399c07deSArnaldo Carvalho de Melo } 694399c07deSArnaldo Carvalho de Melo 695399c07deSArnaldo Carvalho de Melo EXPORT_SYMBOL_GPL(ipv6_opt_accepted); 696399c07deSArnaldo Carvalho de Melo 697787e9208SHerbert Xu static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto) 698662397fdSYOSHIFUJI Hideaki { 699662397fdSYOSHIFUJI Hideaki struct inet6_protocol *ops = NULL; 700662397fdSYOSHIFUJI Hideaki 701662397fdSYOSHIFUJI Hideaki for (;;) { 702662397fdSYOSHIFUJI Hideaki struct ipv6_opt_hdr *opth; 703662397fdSYOSHIFUJI Hideaki int len; 704662397fdSYOSHIFUJI Hideaki 705662397fdSYOSHIFUJI Hideaki if (proto != NEXTHDR_HOP) { 706662397fdSYOSHIFUJI Hideaki ops = rcu_dereference(inet6_protos[proto]); 707662397fdSYOSHIFUJI Hideaki 708662397fdSYOSHIFUJI Hideaki if (unlikely(!ops)) 709662397fdSYOSHIFUJI Hideaki break; 710662397fdSYOSHIFUJI Hideaki 711662397fdSYOSHIFUJI Hideaki if (!(ops->flags & INET6_PROTO_GSO_EXTHDR)) 712662397fdSYOSHIFUJI Hideaki break; 713662397fdSYOSHIFUJI Hideaki } 714662397fdSYOSHIFUJI Hideaki 715662397fdSYOSHIFUJI Hideaki if (unlikely(!pskb_may_pull(skb, 8))) 716662397fdSYOSHIFUJI Hideaki break; 717662397fdSYOSHIFUJI Hideaki 718662397fdSYOSHIFUJI Hideaki opth = (void *)skb->data; 719662397fdSYOSHIFUJI Hideaki len = ipv6_optlen(opth); 720662397fdSYOSHIFUJI Hideaki 721662397fdSYOSHIFUJI Hideaki if (unlikely(!pskb_may_pull(skb, len))) 722662397fdSYOSHIFUJI Hideaki break; 723662397fdSYOSHIFUJI Hideaki 724662397fdSYOSHIFUJI Hideaki proto = opth->nexthdr; 725662397fdSYOSHIFUJI Hideaki __skb_pull(skb, len); 726662397fdSYOSHIFUJI Hideaki } 727662397fdSYOSHIFUJI Hideaki 728787e9208SHerbert Xu return proto; 729662397fdSYOSHIFUJI Hideaki } 730662397fdSYOSHIFUJI Hideaki 731662397fdSYOSHIFUJI Hideaki static int ipv6_gso_send_check(struct sk_buff *skb) 732662397fdSYOSHIFUJI Hideaki { 733662397fdSYOSHIFUJI Hideaki struct ipv6hdr *ipv6h; 734662397fdSYOSHIFUJI Hideaki struct inet6_protocol *ops; 735662397fdSYOSHIFUJI Hideaki int err = -EINVAL; 736662397fdSYOSHIFUJI Hideaki 737662397fdSYOSHIFUJI Hideaki if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) 738662397fdSYOSHIFUJI Hideaki goto out; 739662397fdSYOSHIFUJI Hideaki 740662397fdSYOSHIFUJI Hideaki ipv6h = ipv6_hdr(skb); 741662397fdSYOSHIFUJI Hideaki __skb_pull(skb, sizeof(*ipv6h)); 742662397fdSYOSHIFUJI Hideaki err = -EPROTONOSUPPORT; 743662397fdSYOSHIFUJI Hideaki 744662397fdSYOSHIFUJI Hideaki rcu_read_lock(); 745787e9208SHerbert Xu ops = rcu_dereference(inet6_protos[ 746787e9208SHerbert Xu ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]); 747787e9208SHerbert Xu 748662397fdSYOSHIFUJI Hideaki if (likely(ops && ops->gso_send_check)) { 749662397fdSYOSHIFUJI Hideaki skb_reset_transport_header(skb); 750662397fdSYOSHIFUJI Hideaki err = ops->gso_send_check(skb); 751662397fdSYOSHIFUJI Hideaki } 752662397fdSYOSHIFUJI Hideaki rcu_read_unlock(); 753662397fdSYOSHIFUJI Hideaki 754662397fdSYOSHIFUJI Hideaki out: 755662397fdSYOSHIFUJI Hideaki return err; 756662397fdSYOSHIFUJI Hideaki } 757662397fdSYOSHIFUJI Hideaki 758662397fdSYOSHIFUJI Hideaki static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features) 759662397fdSYOSHIFUJI Hideaki { 760662397fdSYOSHIFUJI Hideaki struct sk_buff *segs = ERR_PTR(-EINVAL); 761662397fdSYOSHIFUJI Hideaki struct ipv6hdr *ipv6h; 762662397fdSYOSHIFUJI Hideaki struct inet6_protocol *ops; 763662397fdSYOSHIFUJI Hideaki 764662397fdSYOSHIFUJI Hideaki if (!(features & NETIF_F_V6_CSUM)) 765662397fdSYOSHIFUJI Hideaki features &= ~NETIF_F_SG; 766662397fdSYOSHIFUJI Hideaki 767662397fdSYOSHIFUJI Hideaki if (unlikely(skb_shinfo(skb)->gso_type & 768662397fdSYOSHIFUJI Hideaki ~(SKB_GSO_UDP | 769662397fdSYOSHIFUJI Hideaki SKB_GSO_DODGY | 770662397fdSYOSHIFUJI Hideaki SKB_GSO_TCP_ECN | 771662397fdSYOSHIFUJI Hideaki SKB_GSO_TCPV6 | 772662397fdSYOSHIFUJI Hideaki 0))) 773662397fdSYOSHIFUJI Hideaki goto out; 774662397fdSYOSHIFUJI Hideaki 775662397fdSYOSHIFUJI Hideaki if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h)))) 776662397fdSYOSHIFUJI Hideaki goto out; 777662397fdSYOSHIFUJI Hideaki 778662397fdSYOSHIFUJI Hideaki ipv6h = ipv6_hdr(skb); 779662397fdSYOSHIFUJI Hideaki __skb_pull(skb, sizeof(*ipv6h)); 780662397fdSYOSHIFUJI Hideaki segs = ERR_PTR(-EPROTONOSUPPORT); 781662397fdSYOSHIFUJI Hideaki 782662397fdSYOSHIFUJI Hideaki rcu_read_lock(); 783787e9208SHerbert Xu ops = rcu_dereference(inet6_protos[ 784787e9208SHerbert Xu ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]); 785787e9208SHerbert Xu 786662397fdSYOSHIFUJI Hideaki if (likely(ops && ops->gso_segment)) { 787662397fdSYOSHIFUJI Hideaki skb_reset_transport_header(skb); 788662397fdSYOSHIFUJI Hideaki segs = ops->gso_segment(skb, features); 789662397fdSYOSHIFUJI Hideaki } 790662397fdSYOSHIFUJI Hideaki rcu_read_unlock(); 791662397fdSYOSHIFUJI Hideaki 792662397fdSYOSHIFUJI Hideaki if (unlikely(IS_ERR(segs))) 793662397fdSYOSHIFUJI Hideaki goto out; 794662397fdSYOSHIFUJI Hideaki 795662397fdSYOSHIFUJI Hideaki for (skb = segs; skb; skb = skb->next) { 796662397fdSYOSHIFUJI Hideaki ipv6h = ipv6_hdr(skb); 797662397fdSYOSHIFUJI Hideaki ipv6h->payload_len = htons(skb->len - skb->mac_len - 798662397fdSYOSHIFUJI Hideaki sizeof(*ipv6h)); 799662397fdSYOSHIFUJI Hideaki } 800662397fdSYOSHIFUJI Hideaki 801662397fdSYOSHIFUJI Hideaki out: 802662397fdSYOSHIFUJI Hideaki return segs; 803662397fdSYOSHIFUJI Hideaki } 804662397fdSYOSHIFUJI Hideaki 805787e9208SHerbert Xu struct ipv6_gro_cb { 806787e9208SHerbert Xu struct napi_gro_cb napi; 807787e9208SHerbert Xu int proto; 808787e9208SHerbert Xu }; 809787e9208SHerbert Xu 810787e9208SHerbert Xu #define IPV6_GRO_CB(skb) ((struct ipv6_gro_cb *)(skb)->cb) 811787e9208SHerbert Xu 812787e9208SHerbert Xu static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, 813787e9208SHerbert Xu struct sk_buff *skb) 814787e9208SHerbert Xu { 815787e9208SHerbert Xu struct inet6_protocol *ops; 816787e9208SHerbert Xu struct sk_buff **pp = NULL; 817787e9208SHerbert Xu struct sk_buff *p; 818787e9208SHerbert Xu struct ipv6hdr *iph; 819787e9208SHerbert Xu unsigned int nlen; 820a5b1cf28SHerbert Xu unsigned int hlen; 821a5b1cf28SHerbert Xu unsigned int off; 822787e9208SHerbert Xu int flush = 1; 823787e9208SHerbert Xu int proto; 824ebad18e9SHerbert Xu __wsum csum; 825787e9208SHerbert Xu 826a5b1cf28SHerbert Xu off = skb_gro_offset(skb); 827a5b1cf28SHerbert Xu hlen = off + sizeof(*iph); 828a5b1cf28SHerbert Xu iph = skb_gro_header_fast(skb, off); 829a5b1cf28SHerbert Xu if (skb_gro_header_hard(skb, hlen)) { 830a5b1cf28SHerbert Xu iph = skb_gro_header_slow(skb, hlen, off); 83186911732SHerbert Xu if (unlikely(!iph)) 832787e9208SHerbert Xu goto out; 833a5b1cf28SHerbert Xu } 834787e9208SHerbert Xu 83586911732SHerbert Xu skb_gro_pull(skb, sizeof(*iph)); 83686911732SHerbert Xu skb_set_transport_header(skb, skb_gro_offset(skb)); 837787e9208SHerbert Xu 83886911732SHerbert Xu flush += ntohs(iph->payload_len) != skb_gro_len(skb); 839787e9208SHerbert Xu 840787e9208SHerbert Xu rcu_read_lock(); 84186911732SHerbert Xu proto = iph->nexthdr; 842787e9208SHerbert Xu ops = rcu_dereference(inet6_protos[proto]); 84386911732SHerbert Xu if (!ops || !ops->gro_receive) { 84486911732SHerbert Xu __pskb_pull(skb, skb_gro_offset(skb)); 84586911732SHerbert Xu proto = ipv6_gso_pull_exthdrs(skb, proto); 84686911732SHerbert Xu skb_gro_pull(skb, -skb_transport_offset(skb)); 84786911732SHerbert Xu skb_reset_transport_header(skb); 84886911732SHerbert Xu __skb_push(skb, skb_gro_offset(skb)); 84986911732SHerbert Xu 850787e9208SHerbert Xu if (!ops || !ops->gro_receive) 851787e9208SHerbert Xu goto out_unlock; 852787e9208SHerbert Xu 85386911732SHerbert Xu iph = ipv6_hdr(skb); 85486911732SHerbert Xu } 85586911732SHerbert Xu 85686911732SHerbert Xu IPV6_GRO_CB(skb)->proto = proto; 85786911732SHerbert Xu 858787e9208SHerbert Xu flush--; 859787e9208SHerbert Xu nlen = skb_network_header_len(skb); 860787e9208SHerbert Xu 861787e9208SHerbert Xu for (p = *head; p; p = p->next) { 862787e9208SHerbert Xu struct ipv6hdr *iph2; 863787e9208SHerbert Xu 864787e9208SHerbert Xu if (!NAPI_GRO_CB(p)->same_flow) 865787e9208SHerbert Xu continue; 866787e9208SHerbert Xu 867787e9208SHerbert Xu iph2 = ipv6_hdr(p); 868787e9208SHerbert Xu 869787e9208SHerbert Xu /* All fields must match except length. */ 870787e9208SHerbert Xu if (nlen != skb_network_header_len(p) || 871787e9208SHerbert Xu memcmp(iph, iph2, offsetof(struct ipv6hdr, payload_len)) || 872787e9208SHerbert Xu memcmp(&iph->nexthdr, &iph2->nexthdr, 873787e9208SHerbert Xu nlen - offsetof(struct ipv6hdr, nexthdr))) { 874787e9208SHerbert Xu NAPI_GRO_CB(p)->same_flow = 0; 875787e9208SHerbert Xu continue; 876787e9208SHerbert Xu } 877787e9208SHerbert Xu 878787e9208SHerbert Xu NAPI_GRO_CB(p)->flush |= flush; 879787e9208SHerbert Xu } 880787e9208SHerbert Xu 881787e9208SHerbert Xu NAPI_GRO_CB(skb)->flush |= flush; 882787e9208SHerbert Xu 883ebad18e9SHerbert Xu csum = skb->csum; 884ebad18e9SHerbert Xu skb_postpull_rcsum(skb, iph, skb_network_header_len(skb)); 885ebad18e9SHerbert Xu 886787e9208SHerbert Xu pp = ops->gro_receive(head, skb); 887787e9208SHerbert Xu 888ebad18e9SHerbert Xu skb->csum = csum; 889ebad18e9SHerbert Xu 890787e9208SHerbert Xu out_unlock: 891787e9208SHerbert Xu rcu_read_unlock(); 892787e9208SHerbert Xu 893787e9208SHerbert Xu out: 894787e9208SHerbert Xu NAPI_GRO_CB(skb)->flush |= flush; 895787e9208SHerbert Xu 896787e9208SHerbert Xu return pp; 897787e9208SHerbert Xu } 898787e9208SHerbert Xu 899787e9208SHerbert Xu static int ipv6_gro_complete(struct sk_buff *skb) 900787e9208SHerbert Xu { 901787e9208SHerbert Xu struct inet6_protocol *ops; 902787e9208SHerbert Xu struct ipv6hdr *iph = ipv6_hdr(skb); 903787e9208SHerbert Xu int err = -ENOSYS; 904787e9208SHerbert Xu 905787e9208SHerbert Xu iph->payload_len = htons(skb->len - skb_network_offset(skb) - 906787e9208SHerbert Xu sizeof(*iph)); 907787e9208SHerbert Xu 908787e9208SHerbert Xu rcu_read_lock(); 909787e9208SHerbert Xu ops = rcu_dereference(inet6_protos[IPV6_GRO_CB(skb)->proto]); 910787e9208SHerbert Xu if (WARN_ON(!ops || !ops->gro_complete)) 911787e9208SHerbert Xu goto out_unlock; 912787e9208SHerbert Xu 913787e9208SHerbert Xu err = ops->gro_complete(skb); 914787e9208SHerbert Xu 915787e9208SHerbert Xu out_unlock: 916787e9208SHerbert Xu rcu_read_unlock(); 917787e9208SHerbert Xu 918787e9208SHerbert Xu return err; 919787e9208SHerbert Xu } 920787e9208SHerbert Xu 9217546dd97SStephen Hemminger static struct packet_type ipv6_packet_type __read_mostly = { 92209640e63SHarvey Harrison .type = cpu_to_be16(ETH_P_IPV6), 923662397fdSYOSHIFUJI Hideaki .func = ipv6_rcv, 924662397fdSYOSHIFUJI Hideaki .gso_send_check = ipv6_gso_send_check, 925662397fdSYOSHIFUJI Hideaki .gso_segment = ipv6_gso_segment, 926787e9208SHerbert Xu .gro_receive = ipv6_gro_receive, 927787e9208SHerbert Xu .gro_complete = ipv6_gro_complete, 928662397fdSYOSHIFUJI Hideaki }; 929662397fdSYOSHIFUJI Hideaki 930662397fdSYOSHIFUJI Hideaki static int __init ipv6_packet_init(void) 931662397fdSYOSHIFUJI Hideaki { 932662397fdSYOSHIFUJI Hideaki dev_add_pack(&ipv6_packet_type); 933662397fdSYOSHIFUJI Hideaki return 0; 934662397fdSYOSHIFUJI Hideaki } 935662397fdSYOSHIFUJI Hideaki 936662397fdSYOSHIFUJI Hideaki static void ipv6_packet_cleanup(void) 937662397fdSYOSHIFUJI Hideaki { 938662397fdSYOSHIFUJI Hideaki dev_remove_pack(&ipv6_packet_type); 939662397fdSYOSHIFUJI Hideaki } 940662397fdSYOSHIFUJI Hideaki 941e43291cbSDenis V. Lunev static int __net_init ipv6_init_mibs(struct net *net) 942e43291cbSDenis V. Lunev { 9430c7ed677SDenis V. Lunev if (snmp_mib_init((void **)net->mib.udp_stats_in6, 9440c7ed677SDenis V. Lunev sizeof (struct udp_mib)) < 0) 9450c7ed677SDenis V. Lunev return -ENOMEM; 946be713a44SDenis V. Lunev if (snmp_mib_init((void **)net->mib.udplite_stats_in6, 947be713a44SDenis V. Lunev sizeof (struct udp_mib)) < 0) 948be713a44SDenis V. Lunev goto err_udplite_mib; 9499261e537SDenis V. Lunev if (snmp_mib_init((void **)net->mib.ipv6_statistics, 9509261e537SDenis V. Lunev sizeof(struct ipstats_mib)) < 0) 9519261e537SDenis V. Lunev goto err_ip_mib; 9529261e537SDenis V. Lunev if (snmp_mib_init((void **)net->mib.icmpv6_statistics, 9539261e537SDenis V. Lunev sizeof(struct icmpv6_mib)) < 0) 9549261e537SDenis V. Lunev goto err_icmp_mib; 9559261e537SDenis V. Lunev if (snmp_mib_init((void **)net->mib.icmpv6msg_statistics, 9569261e537SDenis V. Lunev sizeof(struct icmpv6msg_mib)) < 0) 9579261e537SDenis V. Lunev goto err_icmpmsg_mib; 958e43291cbSDenis V. Lunev return 0; 959be713a44SDenis V. Lunev 9609261e537SDenis V. Lunev err_icmpmsg_mib: 9619261e537SDenis V. Lunev snmp_mib_free((void **)net->mib.icmpv6_statistics); 9629261e537SDenis V. Lunev err_icmp_mib: 9639261e537SDenis V. Lunev snmp_mib_free((void **)net->mib.ipv6_statistics); 9649261e537SDenis V. Lunev err_ip_mib: 9659261e537SDenis V. Lunev snmp_mib_free((void **)net->mib.udplite_stats_in6); 966be713a44SDenis V. Lunev err_udplite_mib: 967be713a44SDenis V. Lunev snmp_mib_free((void **)net->mib.udp_stats_in6); 968be713a44SDenis V. Lunev return -ENOMEM; 969e43291cbSDenis V. Lunev } 970e43291cbSDenis V. Lunev 971e43291cbSDenis V. Lunev static void __net_exit ipv6_cleanup_mibs(struct net *net) 972e43291cbSDenis V. Lunev { 9730c7ed677SDenis V. Lunev snmp_mib_free((void **)net->mib.udp_stats_in6); 974be713a44SDenis V. Lunev snmp_mib_free((void **)net->mib.udplite_stats_in6); 9759261e537SDenis V. Lunev snmp_mib_free((void **)net->mib.ipv6_statistics); 9769261e537SDenis V. Lunev snmp_mib_free((void **)net->mib.icmpv6_statistics); 9779261e537SDenis V. Lunev snmp_mib_free((void **)net->mib.icmpv6msg_statistics); 978e43291cbSDenis V. Lunev } 979e43291cbSDenis V. Lunev 980e7dc8494SAlexey Dobriyan static int __net_init inet6_net_init(struct net *net) 98181c1c178SDaniel Lezcano { 9820c96d8c5SDaniel Lezcano int err = 0; 9830c96d8c5SDaniel Lezcano 98499bc9c4eSDaniel Lezcano net->ipv6.sysctl.bindv6only = 0; 98541a76906SDaniel Lezcano net->ipv6.sysctl.icmpv6_time = 1*HZ; 986e71e0349SDaniel Lezcano 987e43291cbSDenis V. Lunev err = ipv6_init_mibs(net); 988e43291cbSDenis V. Lunev if (err) 989e43291cbSDenis V. Lunev return err; 9900c96d8c5SDaniel Lezcano #ifdef CONFIG_PROC_FS 9910c96d8c5SDaniel Lezcano err = udp6_proc_init(net); 9920c96d8c5SDaniel Lezcano if (err) 9930c96d8c5SDaniel Lezcano goto out; 9946f8b13bcSDaniel Lezcano err = tcp6_proc_init(net); 9956f8b13bcSDaniel Lezcano if (err) 9966f8b13bcSDaniel Lezcano goto proc_tcp6_fail; 9976ab57e7eSDaniel Lezcano err = ac6_proc_init(net); 9986ab57e7eSDaniel Lezcano if (err) 9996ab57e7eSDaniel Lezcano goto proc_ac6_fail; 10000c96d8c5SDaniel Lezcano #endif 10010c96d8c5SDaniel Lezcano return err; 10026f8b13bcSDaniel Lezcano 10036f8b13bcSDaniel Lezcano #ifdef CONFIG_PROC_FS 10046ab57e7eSDaniel Lezcano proc_ac6_fail: 10056ab57e7eSDaniel Lezcano tcp6_proc_exit(net); 10066f8b13bcSDaniel Lezcano proc_tcp6_fail: 10076f8b13bcSDaniel Lezcano udp6_proc_exit(net); 1008e43291cbSDenis V. Lunev out: 1009e43291cbSDenis V. Lunev ipv6_cleanup_mibs(net); 1010e43291cbSDenis V. Lunev return err; 10116f8b13bcSDaniel Lezcano #endif 101281c1c178SDaniel Lezcano } 101381c1c178SDaniel Lezcano 101481c1c178SDaniel Lezcano static void inet6_net_exit(struct net *net) 101581c1c178SDaniel Lezcano { 10160c96d8c5SDaniel Lezcano #ifdef CONFIG_PROC_FS 10170c96d8c5SDaniel Lezcano udp6_proc_exit(net); 10186f8b13bcSDaniel Lezcano tcp6_proc_exit(net); 10196ab57e7eSDaniel Lezcano ac6_proc_exit(net); 10200c96d8c5SDaniel Lezcano #endif 1021e43291cbSDenis V. Lunev ipv6_cleanup_mibs(net); 102281c1c178SDaniel Lezcano } 102381c1c178SDaniel Lezcano 102481c1c178SDaniel Lezcano static struct pernet_operations inet6_net_ops = { 102581c1c178SDaniel Lezcano .init = inet6_net_init, 102681c1c178SDaniel Lezcano .exit = inet6_net_exit, 102781c1c178SDaniel Lezcano }; 102881c1c178SDaniel Lezcano 10291da177e4SLinus Torvalds static int __init inet6_init(void) 10301da177e4SLinus Torvalds { 10311da177e4SLinus Torvalds struct sk_buff *dummy_skb; 10321da177e4SLinus Torvalds struct list_head *r; 1033fe7ca2e1SBrian Haley int err = 0; 10341da177e4SLinus Torvalds 1035ef047f5eSYOSHIFUJI Hideaki BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)); 1036ef047f5eSYOSHIFUJI Hideaki 1037fe7ca2e1SBrian Haley /* Register the socket-side information for inet6_create. */ 1038fe7ca2e1SBrian Haley for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r) 1039fe7ca2e1SBrian Haley INIT_LIST_HEAD(r); 1040fe7ca2e1SBrian Haley 1041fe7ca2e1SBrian Haley if (disable_ipv6) { 1042fe7ca2e1SBrian Haley printk(KERN_INFO 1043fe7ca2e1SBrian Haley "IPv6: Loaded, but administratively disabled, " 1044fe7ca2e1SBrian Haley "reboot required to enable\n"); 1045fe7ca2e1SBrian Haley goto out; 1046fe7ca2e1SBrian Haley } 1047fe7ca2e1SBrian Haley 10481da177e4SLinus Torvalds err = proto_register(&tcpv6_prot, 1); 10491da177e4SLinus Torvalds if (err) 10501da177e4SLinus Torvalds goto out; 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds err = proto_register(&udpv6_prot, 1); 10531da177e4SLinus Torvalds if (err) 10541da177e4SLinus Torvalds goto out_unregister_tcp_proto; 10551da177e4SLinus Torvalds 1056ba4e58ecSGerrit Renker err = proto_register(&udplitev6_prot, 1); 10571da177e4SLinus Torvalds if (err) 10581da177e4SLinus Torvalds goto out_unregister_udp_proto; 10591da177e4SLinus Torvalds 1060ba4e58ecSGerrit Renker err = proto_register(&rawv6_prot, 1); 1061ba4e58ecSGerrit Renker if (err) 1062ba4e58ecSGerrit Renker goto out_unregister_udplite_proto; 1063ba4e58ecSGerrit Renker 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvalds /* We MUST register RAW sockets before we create the ICMP6, 10661da177e4SLinus Torvalds * IGMP6, or NDISC control sockets. 10671da177e4SLinus Torvalds */ 10687f4e4868SDaniel Lezcano err = rawv6_init(); 10697f4e4868SDaniel Lezcano if (err) 10707f4e4868SDaniel Lezcano goto out_unregister_raw_proto; 10711da177e4SLinus Torvalds 10721da177e4SLinus Torvalds /* Register the family here so that the init calls below will 10731da177e4SLinus Torvalds * be able to create sockets. (?? is this dangerous ??) 10741da177e4SLinus Torvalds */ 10758eb55910SDavid S. Miller err = sock_register(&inet6_family_ops); 10768eb55910SDavid S. Miller if (err) 10777f4e4868SDaniel Lezcano goto out_sock_register_fail; 10781da177e4SLinus Torvalds 1079eeb61f71SAl Viro #ifdef CONFIG_SYSCTL 1080eeb61f71SAl Viro err = ipv6_static_sysctl_register(); 1081eeb61f71SAl Viro if (err) 1082eeb61f71SAl Viro goto static_sysctl_fail; 1083eeb61f71SAl Viro #endif 10841da177e4SLinus Torvalds /* 10851da177e4SLinus Torvalds * ipngwg API draft makes clear that the correct semantics 10861da177e4SLinus Torvalds * for TCP and UDP is to consider one TCP and UDP instance 10871da177e4SLinus Torvalds * in a host availiable by both INET and INET6 APIs and 10881da177e4SLinus Torvalds * able to communicate via both network protocols. 10891da177e4SLinus Torvalds */ 10901da177e4SLinus Torvalds 109181c1c178SDaniel Lezcano err = register_pernet_subsys(&inet6_net_ops); 109281c1c178SDaniel Lezcano if (err) 109381c1c178SDaniel Lezcano goto register_pernet_fail; 10949b0f976fSDenis V. Lunev err = icmpv6_init(); 10951da177e4SLinus Torvalds if (err) 10961da177e4SLinus Torvalds goto icmp_fail; 1097623d1a1aSWang Chen err = ip6_mr_init(); 1098623d1a1aSWang Chen if (err) 1099623d1a1aSWang Chen goto ipmr_fail; 11009b0f976fSDenis V. Lunev err = ndisc_init(); 11011da177e4SLinus Torvalds if (err) 11021da177e4SLinus Torvalds goto ndisc_fail; 11039b0f976fSDenis V. Lunev err = igmp6_init(); 11041da177e4SLinus Torvalds if (err) 11051da177e4SLinus Torvalds goto igmp_fail; 11062cc7d573SHarald Welte err = ipv6_netfilter_init(); 11072cc7d573SHarald Welte if (err) 11082cc7d573SHarald Welte goto netfilter_fail; 11091da177e4SLinus Torvalds /* Create /proc/foo6 entries. */ 11101da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 11111da177e4SLinus Torvalds err = -ENOMEM; 11121da177e4SLinus Torvalds if (raw6_proc_init()) 11131da177e4SLinus Torvalds goto proc_raw6_fail; 1114ba4e58ecSGerrit Renker if (udplite6_proc_init()) 1115ba4e58ecSGerrit Renker goto proc_udplite6_fail; 11161da177e4SLinus Torvalds if (ipv6_misc_proc_init()) 11171da177e4SLinus Torvalds goto proc_misc6_fail; 11181da177e4SLinus Torvalds if (if6_proc_init()) 11191da177e4SLinus Torvalds goto proc_if6_fail; 11201da177e4SLinus Torvalds #endif 1121e2fddf5eSDaniel Lezcano err = ip6_route_init(); 1122e2fddf5eSDaniel Lezcano if (err) 1123e2fddf5eSDaniel Lezcano goto ip6_route_fail; 11240a3e78acSDaniel Lezcano err = ip6_flowlabel_init(); 11250a3e78acSDaniel Lezcano if (err) 11260a3e78acSDaniel Lezcano goto ip6_flowlabel_fail; 11271da177e4SLinus Torvalds err = addrconf_init(); 11281da177e4SLinus Torvalds if (err) 11291da177e4SLinus Torvalds goto addrconf_fail; 11301da177e4SLinus Torvalds 11311da177e4SLinus Torvalds /* Init v6 extension headers. */ 1132248b238dSDaniel Lezcano err = ipv6_exthdrs_init(); 1133248b238dSDaniel Lezcano if (err) 1134248b238dSDaniel Lezcano goto ipv6_exthdrs_fail; 1135248b238dSDaniel Lezcano 1136853cbbaaSDaniel Lezcano err = ipv6_frag_init(); 1137853cbbaaSDaniel Lezcano if (err) 1138853cbbaaSDaniel Lezcano goto ipv6_frag_fail; 11391da177e4SLinus Torvalds 11401da177e4SLinus Torvalds /* Init v6 transport protocols. */ 11417f4e4868SDaniel Lezcano err = udpv6_init(); 11427f4e4868SDaniel Lezcano if (err) 11437f4e4868SDaniel Lezcano goto udpv6_fail; 1144e2ed4052SHerbert Xu 11457f4e4868SDaniel Lezcano err = udplitev6_init(); 11467f4e4868SDaniel Lezcano if (err) 11477f4e4868SDaniel Lezcano goto udplitev6_fail; 11487f4e4868SDaniel Lezcano 11497f4e4868SDaniel Lezcano err = tcpv6_init(); 11507f4e4868SDaniel Lezcano if (err) 11517f4e4868SDaniel Lezcano goto tcpv6_fail; 11527f4e4868SDaniel Lezcano 11537f4e4868SDaniel Lezcano err = ipv6_packet_init(); 11547f4e4868SDaniel Lezcano if (err) 11557f4e4868SDaniel Lezcano goto ipv6_packet_fail; 115694911fe3SBenjamin Thery 115794911fe3SBenjamin Thery #ifdef CONFIG_SYSCTL 115894911fe3SBenjamin Thery err = ipv6_sysctl_register(); 115994911fe3SBenjamin Thery if (err) 116094911fe3SBenjamin Thery goto sysctl_fail; 116194911fe3SBenjamin Thery #endif 11621da177e4SLinus Torvalds out: 11631da177e4SLinus Torvalds return err; 11641da177e4SLinus Torvalds 116594911fe3SBenjamin Thery #ifdef CONFIG_SYSCTL 116694911fe3SBenjamin Thery sysctl_fail: 116794911fe3SBenjamin Thery ipv6_packet_cleanup(); 116894911fe3SBenjamin Thery #endif 11697f4e4868SDaniel Lezcano ipv6_packet_fail: 11707f4e4868SDaniel Lezcano tcpv6_exit(); 11717f4e4868SDaniel Lezcano tcpv6_fail: 11727f4e4868SDaniel Lezcano udplitev6_exit(); 11737f4e4868SDaniel Lezcano udplitev6_fail: 11747f4e4868SDaniel Lezcano udpv6_exit(); 11757f4e4868SDaniel Lezcano udpv6_fail: 11767f4e4868SDaniel Lezcano ipv6_frag_exit(); 1177853cbbaaSDaniel Lezcano ipv6_frag_fail: 1178853cbbaaSDaniel Lezcano ipv6_exthdrs_exit(); 1179248b238dSDaniel Lezcano ipv6_exthdrs_fail: 1180248b238dSDaniel Lezcano addrconf_cleanup(); 11811da177e4SLinus Torvalds addrconf_fail: 11821da177e4SLinus Torvalds ip6_flowlabel_cleanup(); 11830a3e78acSDaniel Lezcano ip6_flowlabel_fail: 11841da177e4SLinus Torvalds ip6_route_cleanup(); 1185e2fddf5eSDaniel Lezcano ip6_route_fail: 11861da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 11871da177e4SLinus Torvalds if6_proc_exit(); 11881da177e4SLinus Torvalds proc_if6_fail: 11891da177e4SLinus Torvalds ipv6_misc_proc_exit(); 11901da177e4SLinus Torvalds proc_misc6_fail: 1191ba4e58ecSGerrit Renker udplite6_proc_exit(); 1192ba4e58ecSGerrit Renker proc_udplite6_fail: 11931da177e4SLinus Torvalds raw6_proc_exit(); 11941da177e4SLinus Torvalds proc_raw6_fail: 11951da177e4SLinus Torvalds #endif 11962cc7d573SHarald Welte ipv6_netfilter_fini(); 11972cc7d573SHarald Welte netfilter_fail: 11981da177e4SLinus Torvalds igmp6_cleanup(); 11991da177e4SLinus Torvalds igmp_fail: 12001da177e4SLinus Torvalds ndisc_cleanup(); 12011da177e4SLinus Torvalds ndisc_fail: 1202623d1a1aSWang Chen ip6_mr_cleanup(); 1203623d1a1aSWang Chen ipmr_fail: 12041da177e4SLinus Torvalds icmpv6_cleanup(); 12051da177e4SLinus Torvalds icmp_fail: 120681c1c178SDaniel Lezcano unregister_pernet_subsys(&inet6_net_ops); 120781c1c178SDaniel Lezcano register_pernet_fail: 1208eeb61f71SAl Viro #ifdef CONFIG_SYSCTL 1209eeb61f71SAl Viro ipv6_static_sysctl_unregister(); 1210eeb61f71SAl Viro static_sysctl_fail: 1211eeb61f71SAl Viro #endif 12128eb55910SDavid S. Miller sock_unregister(PF_INET6); 1213e2fddf5eSDaniel Lezcano rtnl_unregister_all(PF_INET6); 12147f4e4868SDaniel Lezcano out_sock_register_fail: 12157f4e4868SDaniel Lezcano rawv6_exit(); 12161da177e4SLinus Torvalds out_unregister_raw_proto: 12171da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 1218ba4e58ecSGerrit Renker out_unregister_udplite_proto: 1219ba4e58ecSGerrit Renker proto_unregister(&udplitev6_prot); 12201da177e4SLinus Torvalds out_unregister_udp_proto: 12211da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 12221da177e4SLinus Torvalds out_unregister_tcp_proto: 12231da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 12241da177e4SLinus Torvalds goto out; 12251da177e4SLinus Torvalds } 12261da177e4SLinus Torvalds module_init(inet6_init); 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds static void __exit inet6_exit(void) 12291da177e4SLinus Torvalds { 1230ff8cf9a9SJohn Dykstra if (disable_ipv6) 1231ff8cf9a9SJohn Dykstra return; 1232ff8cf9a9SJohn Dykstra 12331da177e4SLinus Torvalds /* First of all disallow new sockets creation. */ 12341da177e4SLinus Torvalds sock_unregister(PF_INET6); 1235c127ea2cSThomas Graf /* Disallow any further netlink messages */ 1236c127ea2cSThomas Graf rtnl_unregister_all(PF_INET6); 1237ca17c233SJoe Jin 123894911fe3SBenjamin Thery #ifdef CONFIG_SYSCTL 123994911fe3SBenjamin Thery ipv6_sysctl_unregister(); 124094911fe3SBenjamin Thery #endif 12417f4e4868SDaniel Lezcano udpv6_exit(); 12427f4e4868SDaniel Lezcano udplitev6_exit(); 12437f4e4868SDaniel Lezcano tcpv6_exit(); 12447f4e4868SDaniel Lezcano 1245ca17c233SJoe Jin /* Cleanup code parts. */ 1246ca17c233SJoe Jin ipv6_packet_cleanup(); 1247853cbbaaSDaniel Lezcano ipv6_frag_exit(); 1248248b238dSDaniel Lezcano ipv6_exthdrs_exit(); 12491da177e4SLinus Torvalds addrconf_cleanup(); 1250ca17c233SJoe Jin ip6_flowlabel_cleanup(); 12511da177e4SLinus Torvalds ip6_route_cleanup(); 1252ca17c233SJoe Jin #ifdef CONFIG_PROC_FS 1253ca17c233SJoe Jin 1254ca17c233SJoe Jin /* Cleanup code parts. */ 1255ca17c233SJoe Jin if6_proc_exit(); 1256ca17c233SJoe Jin ipv6_misc_proc_exit(); 1257ca17c233SJoe Jin udplite6_proc_exit(); 1258ca17c233SJoe Jin raw6_proc_exit(); 1259ca17c233SJoe Jin #endif 12602cc7d573SHarald Welte ipv6_netfilter_fini(); 1261ca17c233SJoe Jin igmp6_cleanup(); 12621da177e4SLinus Torvalds ndisc_cleanup(); 1263623d1a1aSWang Chen ip6_mr_cleanup(); 12641da177e4SLinus Torvalds icmpv6_cleanup(); 12657f4e4868SDaniel Lezcano rawv6_exit(); 126694911fe3SBenjamin Thery 126781c1c178SDaniel Lezcano unregister_pernet_subsys(&inet6_net_ops); 1268eeb61f71SAl Viro #ifdef CONFIG_SYSCTL 1269eeb61f71SAl Viro ipv6_static_sysctl_unregister(); 1270eeb61f71SAl Viro #endif 12711da177e4SLinus Torvalds proto_unregister(&rawv6_prot); 1272ca17c233SJoe Jin proto_unregister(&udplitev6_prot); 12731da177e4SLinus Torvalds proto_unregister(&udpv6_prot); 12741da177e4SLinus Torvalds proto_unregister(&tcpv6_prot); 12751da177e4SLinus Torvalds } 12761da177e4SLinus Torvalds module_exit(inet6_exit); 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds MODULE_ALIAS_NETPROTO(PF_INET6); 1279