2 * PF_INET6 socket protocol family
3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
8 * Adapted from linux/net/ipv4/af_inet.c
11 * piggy, Karl Knutson : Socket protocol table
12 * Hideaki YOSHIFUJI : sin6_scope_id support
13 * Arnaldo Melo : check proc_net_create return, cleanups
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
22 #include <linux/module.h>
23 #include <linux/capability.h>
24 #include <linux/errno.h>
25 #include <linux/types.h>
26 #include <linux/socket.h>
28 #include <linux/kernel.h>
29 #include <linux/timer.h>
30 #include <linux/string.h>
31 #include <linux/sockios.h>
32 #include <linux/net.h>
33 #include <linux/fcntl.h>
35 #include <linux/interrupt.h>
36 #include <linux/proc_fs.h>
37 #include <linux/stat.h>
38 #include <linux/init.h>
40 #include <linux/inet.h>
41 #include <linux/netdevice.h>
42 #include <linux/icmpv6.h>
43 #include <linux/netfilter_ipv6.h>
48 #include <net/udplite.h>
51 #include <net/protocol.h>
52 #include <net/inet_common.h>
53 #include <net/route.h>
54 #include <net/transp_v6.h>
55 #include <net/ip6_route.h>
56 #include <net/addrconf.h>
57 #ifdef CONFIG_IPV6_TUNNEL
58 #include <net/ip6_tunnel.h>
61 #include <asm/uaccess.h>
62 #include <asm/system.h>
63 #include <linux/mroute6.h>
65 MODULE_AUTHOR("Cast of dozens");
66 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
67 MODULE_LICENSE("GPL");
69 /* The inetsw6 table contains everything that inet6_create needs to
72 static struct list_head inetsw6[SOCK_MAX];
73 static DEFINE_SPINLOCK(inetsw6_lock);
75 static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
77 const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
79 return (struct ipv6_pinfo *)(((u8 *)sk) + offset);
82 static int inet6_create(struct net *net, struct socket *sock, int protocol)
84 struct inet_sock *inet;
85 struct ipv6_pinfo *np;
87 struct inet_protosw *answer;
88 struct proto *answer_prot;
89 unsigned char answer_flags;
91 int try_loading_module = 0;
94 if (sock->type != SOCK_RAW &&
95 sock->type != SOCK_DGRAM &&
99 /* Look for the requested type/protocol pair. */
101 err = -ESOCKTNOSUPPORT;
103 list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) {
106 /* Check the non-wild match. */
107 if (protocol == answer->protocol) {
108 if (protocol != IPPROTO_IP)
111 /* Check for the two wild cases. */
112 if (IPPROTO_IP == protocol) {
113 protocol = answer->protocol;
116 if (IPPROTO_IP == answer->protocol)
119 err = -EPROTONOSUPPORT;
123 if (try_loading_module < 2) {
126 * Be more specific, e.g. net-pf-10-proto-132-type-1
127 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
129 if (++try_loading_module == 1)
130 request_module("net-pf-%d-proto-%d-type-%d",
131 PF_INET6, protocol, sock->type);
133 * Fall back to generic, e.g. net-pf-10-proto-132
134 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
137 request_module("net-pf-%d-proto-%d",
139 goto lookup_protocol;
145 if (answer->capability > 0 && !capable(answer->capability))
148 sock->ops = answer->ops;
149 answer_prot = answer->prot;
150 answer_no_check = answer->no_check;
151 answer_flags = answer->flags;
154 WARN_ON(answer_prot->slab == NULL);
157 sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot);
161 sock_init_data(sock, sk);
164 sk->sk_no_check = answer_no_check;
165 if (INET_PROTOSW_REUSE & answer_flags)
169 inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
171 if (SOCK_RAW == sock->type) {
172 inet->num = protocol;
173 if (IPPROTO_RAW == protocol)
177 sk->sk_destruct = inet_sock_destruct;
178 sk->sk_family = PF_INET6;
179 sk->sk_protocol = protocol;
181 sk->sk_backlog_rcv = answer->prot->backlog_rcv;
183 inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk);
187 np->pmtudisc = IPV6_PMTUDISC_WANT;
188 np->ipv6only = net->ipv6.sysctl.bindv6only;
190 /* Init the ipv4 part of the socket since we can have sockets
191 * using v6 API for ipv4.
198 inet->mc_list = NULL;
200 if (ipv4_config.no_pmtu_disc)
201 inet->pmtudisc = IP_PMTUDISC_DONT;
203 inet->pmtudisc = IP_PMTUDISC_WANT;
205 * Increment only the relevant sk_prot->socks debug field, this changes
206 * the previous behaviour of incrementing both the equivalent to
207 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
209 * This allows better debug granularity as we'll know exactly how many
210 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
211 * transport protocol socks. -acme
213 sk_refcnt_debug_inc(sk);
216 /* It assumes that any protocol which allows
217 * the user to assign a number at socket
218 * creation time automatically shares.
220 inet->sport = htons(inet->num);
221 sk->sk_prot->hash(sk);
223 if (sk->sk_prot->init) {
224 err = sk->sk_prot->init(sk);
226 sk_common_release(sk);
238 /* bind for INET6 API */
239 int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
241 struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr;
242 struct sock *sk = sock->sk;
243 struct inet_sock *inet = inet_sk(sk);
244 struct ipv6_pinfo *np = inet6_sk(sk);
245 struct net *net = sock_net(sk);
251 /* If the socket has its own bind function then use it. */
252 if (sk->sk_prot->bind)
253 return sk->sk_prot->bind(sk, uaddr, addr_len);
255 if (addr_len < SIN6_LEN_RFC2133)
257 addr_type = ipv6_addr_type(&addr->sin6_addr);
258 if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
261 snum = ntohs(addr->sin6_port);
262 if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
267 /* Check these errors (active socket, double bind). */
268 if (sk->sk_state != TCP_CLOSE || inet->num) {
273 /* Check if the address belongs to the host. */
274 if (addr_type == IPV6_ADDR_MAPPED) {
275 v4addr = addr->sin6_addr.s6_addr32[3];
276 if (inet_addr_type(net, v4addr) != RTN_LOCAL) {
277 err = -EADDRNOTAVAIL;
281 if (addr_type != IPV6_ADDR_ANY) {
282 struct net_device *dev = NULL;
284 if (addr_type & IPV6_ADDR_LINKLOCAL) {
285 if (addr_len >= sizeof(struct sockaddr_in6) &&
286 addr->sin6_scope_id) {
287 /* Override any existing binding, if another one
288 * is supplied by user.
290 sk->sk_bound_dev_if = addr->sin6_scope_id;
293 /* Binding to link-local address requires an interface */
294 if (!sk->sk_bound_dev_if) {
298 dev = dev_get_by_index(net, sk->sk_bound_dev_if);
305 /* ipv4 addr of the socket is invalid. Only the
306 * unspecified and mapped address have a v4 equivalent.
308 v4addr = LOOPBACK4_IPV6;
309 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
310 if (!ipv6_chk_addr(net, &addr->sin6_addr,
314 err = -EADDRNOTAVAIL;
323 inet->rcv_saddr = v4addr;
324 inet->saddr = v4addr;
326 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
328 if (!(addr_type & IPV6_ADDR_MULTICAST))
329 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
331 /* Make sure we are allowed to bind here. */
332 if (sk->sk_prot->get_port(sk, snum)) {
333 inet_reset_saddr(sk);
338 if (addr_type != IPV6_ADDR_ANY)
339 sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
341 sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
342 inet->sport = htons(inet->num);
350 EXPORT_SYMBOL(inet6_bind);
352 int inet6_release(struct socket *sock)
354 struct sock *sk = sock->sk;
360 ipv6_sock_mc_close(sk);
363 ipv6_sock_ac_close(sk);
365 return inet_release(sock);
368 EXPORT_SYMBOL(inet6_release);
370 void inet6_destroy_sock(struct sock *sk)
372 struct ipv6_pinfo *np = inet6_sk(sk);
374 struct ipv6_txoptions *opt;
376 /* Release rx options */
378 if ((skb = xchg(&np->pktoptions, NULL)) != NULL)
381 /* Free flowlabels */
382 fl6_free_socklist(sk);
384 /* Free tx options */
386 if ((opt = xchg(&np->opt, NULL)) != NULL)
387 sock_kfree_s(sk, opt, opt->tot_len);
390 EXPORT_SYMBOL_GPL(inet6_destroy_sock);
393 * This does both peername and sockname.
396 int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
397 int *uaddr_len, int peer)
399 struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr;
400 struct sock *sk = sock->sk;
401 struct inet_sock *inet = inet_sk(sk);
402 struct ipv6_pinfo *np = inet6_sk(sk);
404 sin->sin6_family = AF_INET6;
405 sin->sin6_flowinfo = 0;
406 sin->sin6_scope_id = 0;
410 if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
413 sin->sin6_port = inet->dport;
414 ipv6_addr_copy(&sin->sin6_addr, &np->daddr);
416 sin->sin6_flowinfo = np->flow_label;
418 if (ipv6_addr_any(&np->rcv_saddr))
419 ipv6_addr_copy(&sin->sin6_addr, &np->saddr);
421 ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr);
423 sin->sin6_port = inet->sport;
425 if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
426 sin->sin6_scope_id = sk->sk_bound_dev_if;
427 *uaddr_len = sizeof(*sin);
431 EXPORT_SYMBOL(inet6_getname);
433 int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
435 struct sock *sk = sock->sk;
436 struct net *net = sock_net(sk);
441 return sock_get_timestamp(sk, (struct timeval __user *)arg);
444 return sock_get_timestampns(sk, (struct timespec __user *)arg);
449 return(ipv6_route_ioctl(net, cmd, (void __user *)arg));
452 return addrconf_add_ifaddr(net, (void __user *) arg);
454 return addrconf_del_ifaddr(net, (void __user *) arg);
456 return addrconf_set_dstaddr(net, (void __user *) arg);
458 if (!sk->sk_prot->ioctl)
460 return sk->sk_prot->ioctl(sk, cmd, arg);
466 EXPORT_SYMBOL(inet6_ioctl);
468 const struct proto_ops inet6_stream_ops = {
470 .owner = THIS_MODULE,
471 .release = inet6_release,
473 .connect = inet_stream_connect, /* ok */
474 .socketpair = sock_no_socketpair, /* a do nothing */
475 .accept = inet_accept, /* ok */
476 .getname = inet6_getname,
477 .poll = tcp_poll, /* ok */
478 .ioctl = inet6_ioctl, /* must change */
479 .listen = inet_listen, /* ok */
480 .shutdown = inet_shutdown, /* ok */
481 .setsockopt = sock_common_setsockopt, /* ok */
482 .getsockopt = sock_common_getsockopt, /* ok */
483 .sendmsg = tcp_sendmsg, /* ok */
484 .recvmsg = sock_common_recvmsg, /* ok */
485 .mmap = sock_no_mmap,
486 .sendpage = tcp_sendpage,
487 .splice_read = tcp_splice_read,
489 .compat_setsockopt = compat_sock_common_setsockopt,
490 .compat_getsockopt = compat_sock_common_getsockopt,
494 const struct proto_ops inet6_dgram_ops = {
496 .owner = THIS_MODULE,
497 .release = inet6_release,
499 .connect = inet_dgram_connect, /* ok */
500 .socketpair = sock_no_socketpair, /* a do nothing */
501 .accept = sock_no_accept, /* a do nothing */
502 .getname = inet6_getname,
503 .poll = udp_poll, /* ok */
504 .ioctl = inet6_ioctl, /* must change */
505 .listen = sock_no_listen, /* ok */
506 .shutdown = inet_shutdown, /* ok */
507 .setsockopt = sock_common_setsockopt, /* ok */
508 .getsockopt = sock_common_getsockopt, /* ok */
509 .sendmsg = inet_sendmsg, /* ok */
510 .recvmsg = sock_common_recvmsg, /* ok */
511 .mmap = sock_no_mmap,
512 .sendpage = sock_no_sendpage,
514 .compat_setsockopt = compat_sock_common_setsockopt,
515 .compat_getsockopt = compat_sock_common_getsockopt,
519 static struct net_proto_family inet6_family_ops = {
521 .create = inet6_create,
522 .owner = THIS_MODULE,
525 int inet6_register_protosw(struct inet_protosw *p)
527 struct list_head *lh;
528 struct inet_protosw *answer;
529 struct list_head *last_perm;
530 int protocol = p->protocol;
533 spin_lock_bh(&inetsw6_lock);
536 if (p->type >= SOCK_MAX)
539 /* If we are trying to override a permanent protocol, bail. */
542 last_perm = &inetsw6[p->type];
543 list_for_each(lh, &inetsw6[p->type]) {
544 answer = list_entry(lh, struct inet_protosw, list);
546 /* Check only the non-wild match. */
547 if (INET_PROTOSW_PERMANENT & answer->flags) {
548 if (protocol == answer->protocol)
558 /* Add the new entry after the last permanent entry if any, so that
559 * the new entry does not override a permanent entry when matched with
560 * a wild-card protocol. But it is allowed to override any existing
561 * non-permanent entry. This means that when we remove this entry, the
562 * system automatically returns to the old behavior.
564 list_add_rcu(&p->list, last_perm);
567 spin_unlock_bh(&inetsw6_lock);
571 printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
577 "Ignoring attempt to register invalid socket type %d.\n",
582 EXPORT_SYMBOL(inet6_register_protosw);
585 inet6_unregister_protosw(struct inet_protosw *p)
587 if (INET_PROTOSW_PERMANENT & p->flags) {
589 "Attempt to unregister permanent protocol %d.\n",
592 spin_lock_bh(&inetsw6_lock);
593 list_del_rcu(&p->list);
594 spin_unlock_bh(&inetsw6_lock);
600 EXPORT_SYMBOL(inet6_unregister_protosw);
602 int inet6_sk_rebuild_header(struct sock *sk)
605 struct dst_entry *dst;
606 struct ipv6_pinfo *np = inet6_sk(sk);
608 dst = __sk_dst_check(sk, np->dst_cookie);
611 struct inet_sock *inet = inet_sk(sk);
612 struct in6_addr *final_p = NULL, final;
615 memset(&fl, 0, sizeof(fl));
616 fl.proto = sk->sk_protocol;
617 ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
618 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
619 fl.fl6_flowlabel = np->flow_label;
620 fl.oif = sk->sk_bound_dev_if;
621 fl.fl_ip_dport = inet->dport;
622 fl.fl_ip_sport = inet->sport;
623 security_sk_classify_flow(sk, &fl);
625 if (np->opt && np->opt->srcrt) {
626 struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
627 ipv6_addr_copy(&final, &fl.fl6_dst);
628 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
632 err = ip6_dst_lookup(sk, &dst, &fl);
634 sk->sk_route_caps = 0;
638 ipv6_addr_copy(&fl.fl6_dst, final_p);
640 if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
641 sk->sk_err_soft = -err;
645 __ip6_dst_store(sk, dst, NULL, NULL);
651 EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
653 int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
655 struct ipv6_pinfo *np = inet6_sk(sk);
656 struct inet6_skb_parm *opt = IP6CB(skb);
659 if ((opt->hop && (np->rxopt.bits.hopopts ||
660 np->rxopt.bits.ohopopts)) ||
661 ((IPV6_FLOWINFO_MASK &
662 *(__be32 *)skb_network_header(skb)) &&
663 np->rxopt.bits.rxflow) ||
664 (opt->srcrt && (np->rxopt.bits.srcrt ||
665 np->rxopt.bits.osrcrt)) ||
666 ((opt->dst1 || opt->dst0) &&
667 (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
673 EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
675 static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb,
678 struct inet6_protocol *ops = NULL;
681 struct ipv6_opt_hdr *opth;
684 if (proto != NEXTHDR_HOP) {
685 ops = rcu_dereference(inet6_protos[proto]);
690 if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
694 if (unlikely(!pskb_may_pull(skb, 8)))
697 opth = (void *)skb->data;
698 len = ipv6_optlen(opth);
700 if (unlikely(!pskb_may_pull(skb, len)))
703 proto = opth->nexthdr;
704 __skb_pull(skb, len);
710 static int ipv6_gso_send_check(struct sk_buff *skb)
712 struct ipv6hdr *ipv6h;
713 struct inet6_protocol *ops;
716 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
719 ipv6h = ipv6_hdr(skb);
720 __skb_pull(skb, sizeof(*ipv6h));
721 err = -EPROTONOSUPPORT;
724 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
725 if (likely(ops && ops->gso_send_check)) {
726 skb_reset_transport_header(skb);
727 err = ops->gso_send_check(skb);
735 static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
737 struct sk_buff *segs = ERR_PTR(-EINVAL);
738 struct ipv6hdr *ipv6h;
739 struct inet6_protocol *ops;
741 if (!(features & NETIF_F_V6_CSUM))
742 features &= ~NETIF_F_SG;
744 if (unlikely(skb_shinfo(skb)->gso_type &
752 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
755 ipv6h = ipv6_hdr(skb);
756 __skb_pull(skb, sizeof(*ipv6h));
757 segs = ERR_PTR(-EPROTONOSUPPORT);
760 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
761 if (likely(ops && ops->gso_segment)) {
762 skb_reset_transport_header(skb);
763 segs = ops->gso_segment(skb, features);
767 if (unlikely(IS_ERR(segs)))
770 for (skb = segs; skb; skb = skb->next) {
771 ipv6h = ipv6_hdr(skb);
772 ipv6h->payload_len = htons(skb->len - skb->mac_len -
780 static struct packet_type ipv6_packet_type = {
781 .type = __constant_htons(ETH_P_IPV6),
783 .gso_send_check = ipv6_gso_send_check,
784 .gso_segment = ipv6_gso_segment,
787 static int __init ipv6_packet_init(void)
789 dev_add_pack(&ipv6_packet_type);
793 static void ipv6_packet_cleanup(void)
795 dev_remove_pack(&ipv6_packet_type);
798 static int __init init_ipv6_mibs(void)
800 if (snmp_mib_init((void **)ipv6_statistics,
801 sizeof(struct ipstats_mib)) < 0)
803 if (snmp_mib_init((void **)icmpv6_statistics,
804 sizeof(struct icmpv6_mib)) < 0)
806 if (snmp_mib_init((void **)icmpv6msg_statistics,
807 sizeof(struct icmpv6msg_mib)) < 0)
808 goto err_icmpmsg_mib;
809 if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0)
811 if (snmp_mib_init((void **)udplite_stats_in6,
812 sizeof (struct udp_mib)) < 0)
813 goto err_udplite_mib;
817 snmp_mib_free((void **)udp_stats_in6);
819 snmp_mib_free((void **)icmpv6msg_statistics);
821 snmp_mib_free((void **)icmpv6_statistics);
823 snmp_mib_free((void **)ipv6_statistics);
829 static void cleanup_ipv6_mibs(void)
831 snmp_mib_free((void **)ipv6_statistics);
832 snmp_mib_free((void **)icmpv6_statistics);
833 snmp_mib_free((void **)icmpv6msg_statistics);
834 snmp_mib_free((void **)udp_stats_in6);
835 snmp_mib_free((void **)udplite_stats_in6);
838 static int inet6_net_init(struct net *net)
842 net->ipv6.sysctl.bindv6only = 0;
843 net->ipv6.sysctl.icmpv6_time = 1*HZ;
845 #ifdef CONFIG_PROC_FS
846 err = udp6_proc_init(net);
849 err = tcp6_proc_init(net);
852 err = ac6_proc_init(net);
859 #ifdef CONFIG_PROC_FS
868 static void inet6_net_exit(struct net *net)
870 #ifdef CONFIG_PROC_FS
877 static struct pernet_operations inet6_net_ops = {
878 .init = inet6_net_init,
879 .exit = inet6_net_exit,
882 static int __init inet6_init(void)
884 struct sk_buff *dummy_skb;
888 BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
890 err = proto_register(&tcpv6_prot, 1);
894 err = proto_register(&udpv6_prot, 1);
896 goto out_unregister_tcp_proto;
898 err = proto_register(&udplitev6_prot, 1);
900 goto out_unregister_udp_proto;
902 err = proto_register(&rawv6_prot, 1);
904 goto out_unregister_udplite_proto;
907 /* Register the socket-side information for inet6_create. */
908 for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
911 /* We MUST register RAW sockets before we create the ICMP6,
912 * IGMP6, or NDISC control sockets.
916 goto out_unregister_raw_proto;
918 /* Register the family here so that the init calls below will
919 * be able to create sockets. (?? is this dangerous ??)
921 err = sock_register(&inet6_family_ops);
923 goto out_sock_register_fail;
925 /* Initialise ipv6 mibs */
926 err = init_ipv6_mibs();
928 goto out_unregister_sock;
931 err = ipv6_static_sysctl_register();
933 goto static_sysctl_fail;
936 * ipngwg API draft makes clear that the correct semantics
937 * for TCP and UDP is to consider one TCP and UDP instance
938 * in a host availiable by both INET and INET6 APIs and
939 * able to communicate via both network protocols.
942 err = register_pernet_subsys(&inet6_net_ops);
944 goto register_pernet_fail;
957 err = ipv6_netfilter_init();
960 /* Create /proc/foo6 entries. */
961 #ifdef CONFIG_PROC_FS
963 if (raw6_proc_init())
965 if (udplite6_proc_init())
966 goto proc_udplite6_fail;
967 if (ipv6_misc_proc_init())
968 goto proc_misc6_fail;
972 err = ip6_route_init();
975 err = ip6_flowlabel_init();
977 goto ip6_flowlabel_fail;
978 err = addrconf_init();
982 /* Init v6 extension headers. */
983 err = ipv6_exthdrs_init();
985 goto ipv6_exthdrs_fail;
987 err = ipv6_frag_init();
991 /* Init v6 transport protocols. */
996 err = udplitev6_init();
1004 err = ipv6_packet_init();
1006 goto ipv6_packet_fail;
1008 #ifdef CONFIG_SYSCTL
1009 err = ipv6_sysctl_register();
1016 #ifdef CONFIG_SYSCTL
1018 ipv6_packet_cleanup();
1029 ipv6_exthdrs_exit();
1033 ip6_flowlabel_cleanup();
1035 ip6_route_cleanup();
1037 #ifdef CONFIG_PROC_FS
1040 ipv6_misc_proc_exit();
1042 udplite6_proc_exit();
1047 ipv6_netfilter_fini();
1057 unregister_pernet_subsys(&inet6_net_ops);
1058 register_pernet_fail:
1059 #ifdef CONFIG_SYSCTL
1060 ipv6_static_sysctl_unregister();
1063 cleanup_ipv6_mibs();
1064 out_unregister_sock:
1065 sock_unregister(PF_INET6);
1066 rtnl_unregister_all(PF_INET6);
1067 out_sock_register_fail:
1069 out_unregister_raw_proto:
1070 proto_unregister(&rawv6_prot);
1071 out_unregister_udplite_proto:
1072 proto_unregister(&udplitev6_prot);
1073 out_unregister_udp_proto:
1074 proto_unregister(&udpv6_prot);
1075 out_unregister_tcp_proto:
1076 proto_unregister(&tcpv6_prot);
1079 module_init(inet6_init);
1081 static void __exit inet6_exit(void)
1083 /* First of all disallow new sockets creation. */
1084 sock_unregister(PF_INET6);
1085 /* Disallow any further netlink messages */
1086 rtnl_unregister_all(PF_INET6);
1088 #ifdef CONFIG_SYSCTL
1089 ipv6_sysctl_unregister();
1095 /* Cleanup code parts. */
1096 ipv6_packet_cleanup();
1098 ipv6_exthdrs_exit();
1100 ip6_flowlabel_cleanup();
1101 ip6_route_cleanup();
1102 #ifdef CONFIG_PROC_FS
1104 /* Cleanup code parts. */
1106 ipv6_misc_proc_exit();
1107 udplite6_proc_exit();
1110 ipv6_netfilter_fini();
1117 unregister_pernet_subsys(&inet6_net_ops);
1118 #ifdef CONFIG_SYSCTL
1119 ipv6_static_sysctl_unregister();
1121 cleanup_ipv6_mibs();
1122 proto_unregister(&rawv6_prot);
1123 proto_unregister(&udplitev6_prot);
1124 proto_unregister(&udpv6_prot);
1125 proto_unregister(&tcpv6_prot);
1127 module_exit(inet6_exit);
1129 MODULE_ALIAS_NETPROTO(PF_INET6);