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.
21 #define pr_fmt(fmt) "IPv6: " fmt
23 #include <linux/module.h>
24 #include <linux/capability.h>
25 #include <linux/errno.h>
26 #include <linux/types.h>
27 #include <linux/socket.h>
29 #include <linux/kernel.h>
30 #include <linux/timer.h>
31 #include <linux/string.h>
32 #include <linux/sockios.h>
33 #include <linux/net.h>
34 #include <linux/fcntl.h>
36 #include <linux/interrupt.h>
37 #include <linux/proc_fs.h>
38 #include <linux/stat.h>
39 #include <linux/init.h>
40 #include <linux/slab.h>
42 #include <linux/inet.h>
43 #include <linux/netdevice.h>
44 #include <linux/icmpv6.h>
45 #include <linux/netfilter_ipv6.h>
50 #include <net/udplite.h>
53 #include <net/protocol.h>
54 #include <net/inet_common.h>
55 #include <net/route.h>
56 #include <net/transp_v6.h>
57 #include <net/ip6_route.h>
58 #include <net/addrconf.h>
59 #include <net/ndisc.h>
60 #ifdef CONFIG_IPV6_TUNNEL
61 #include <net/ip6_tunnel.h>
64 #include <asm/uaccess.h>
65 #include <linux/mroute6.h>
67 MODULE_AUTHOR("Cast of dozens");
68 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
69 MODULE_LICENSE("GPL");
71 /* The inetsw6 table contains everything that inet6_create needs to
74 static struct list_head inetsw6
[SOCK_MAX
];
75 static DEFINE_SPINLOCK(inetsw6_lock
);
77 struct ipv6_params ipv6_defaults
= {
82 static int disable_ipv6_mod
;
84 module_param_named(disable
, disable_ipv6_mod
, int, 0444);
85 MODULE_PARM_DESC(disable
, "Disable IPv6 module such that it is non-functional");
87 module_param_named(disable_ipv6
, ipv6_defaults
.disable_ipv6
, int, 0444);
88 MODULE_PARM_DESC(disable_ipv6
, "Disable IPv6 on all interfaces");
90 module_param_named(autoconf
, ipv6_defaults
.autoconf
, int, 0444);
91 MODULE_PARM_DESC(autoconf
, "Enable IPv6 address autoconfiguration on all interfaces");
93 static __inline__
struct ipv6_pinfo
*inet6_sk_generic(struct sock
*sk
)
95 const int offset
= sk
->sk_prot
->obj_size
- sizeof(struct ipv6_pinfo
);
97 return (struct ipv6_pinfo
*)(((u8
*)sk
) + offset
);
100 static int inet6_create(struct net
*net
, struct socket
*sock
, int protocol
,
103 struct inet_sock
*inet
;
104 struct ipv6_pinfo
*np
;
106 struct inet_protosw
*answer
;
107 struct proto
*answer_prot
;
108 unsigned char answer_flags
;
109 int try_loading_module
= 0;
112 /* Look for the requested type/protocol pair. */
114 err
= -ESOCKTNOSUPPORT
;
116 list_for_each_entry_rcu(answer
, &inetsw6
[sock
->type
], list
) {
119 /* Check the non-wild match. */
120 if (protocol
== answer
->protocol
) {
121 if (protocol
!= IPPROTO_IP
)
124 /* Check for the two wild cases. */
125 if (IPPROTO_IP
== protocol
) {
126 protocol
= answer
->protocol
;
129 if (IPPROTO_IP
== answer
->protocol
)
132 err
= -EPROTONOSUPPORT
;
136 if (try_loading_module
< 2) {
139 * Be more specific, e.g. net-pf-10-proto-132-type-1
140 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
142 if (++try_loading_module
== 1)
143 request_module("net-pf-%d-proto-%d-type-%d",
144 PF_INET6
, protocol
, sock
->type
);
146 * Fall back to generic, e.g. net-pf-10-proto-132
147 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
150 request_module("net-pf-%d-proto-%d",
152 goto lookup_protocol
;
158 if (sock
->type
== SOCK_RAW
&& !kern
&&
159 !ns_capable(net
->user_ns
, CAP_NET_RAW
))
162 sock
->ops
= answer
->ops
;
163 answer_prot
= answer
->prot
;
164 answer_flags
= answer
->flags
;
167 WARN_ON(!answer_prot
->slab
);
170 sk
= sk_alloc(net
, PF_INET6
, GFP_KERNEL
, answer_prot
, kern
);
174 sock_init_data(sock
, sk
);
177 if (INET_PROTOSW_REUSE
& answer_flags
)
178 sk
->sk_reuse
= SK_CAN_REUSE
;
181 inet
->is_icsk
= (INET_PROTOSW_ICSK
& answer_flags
) != 0;
183 if (SOCK_RAW
== sock
->type
) {
184 inet
->inet_num
= protocol
;
185 if (IPPROTO_RAW
== protocol
)
189 sk
->sk_destruct
= inet_sock_destruct
;
190 sk
->sk_family
= PF_INET6
;
191 sk
->sk_protocol
= protocol
;
193 sk
->sk_backlog_rcv
= answer
->prot
->backlog_rcv
;
195 inet_sk(sk
)->pinet6
= np
= inet6_sk_generic(sk
);
197 np
->mcast_hops
= IPV6_DEFAULT_MCASTHOPS
;
199 np
->pmtudisc
= IPV6_PMTUDISC_WANT
;
200 np
->autoflowlabel
= ip6_default_np_autolabel(sock_net(sk
));
201 sk
->sk_ipv6only
= net
->ipv6
.sysctl
.bindv6only
;
203 /* Init the ipv4 part of the socket since we can have sockets
204 * using v6 API for ipv4.
211 inet
->mc_list
= NULL
;
214 if (net
->ipv4
.sysctl_ip_no_pmtu_disc
)
215 inet
->pmtudisc
= IP_PMTUDISC_DONT
;
217 inet
->pmtudisc
= IP_PMTUDISC_WANT
;
219 * Increment only the relevant sk_prot->socks debug field, this changes
220 * the previous behaviour of incrementing both the equivalent to
221 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
223 * This allows better debug granularity as we'll know exactly how many
224 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
225 * transport protocol socks. -acme
227 sk_refcnt_debug_inc(sk
);
229 if (inet
->inet_num
) {
230 /* It assumes that any protocol which allows
231 * the user to assign a number at socket
232 * creation time automatically shares.
234 inet
->inet_sport
= htons(inet
->inet_num
);
235 sk
->sk_prot
->hash(sk
);
237 if (sk
->sk_prot
->init
) {
238 err
= sk
->sk_prot
->init(sk
);
240 sk_common_release(sk
);
252 /* bind for INET6 API */
253 int inet6_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
255 struct sockaddr_in6
*addr
= (struct sockaddr_in6
*)uaddr
;
256 struct sock
*sk
= sock
->sk
;
257 struct inet_sock
*inet
= inet_sk(sk
);
258 struct ipv6_pinfo
*np
= inet6_sk(sk
);
259 struct net
*net
= sock_net(sk
);
265 /* If the socket has its own bind function then use it. */
266 if (sk
->sk_prot
->bind
)
267 return sk
->sk_prot
->bind(sk
, uaddr
, addr_len
);
269 if (addr_len
< SIN6_LEN_RFC2133
)
272 if (addr
->sin6_family
!= AF_INET6
)
273 return -EAFNOSUPPORT
;
275 addr_type
= ipv6_addr_type(&addr
->sin6_addr
);
276 if ((addr_type
& IPV6_ADDR_MULTICAST
) && sock
->type
== SOCK_STREAM
)
279 snum
= ntohs(addr
->sin6_port
);
280 if (snum
&& snum
< PROT_SOCK
&& !ns_capable(net
->user_ns
, CAP_NET_BIND_SERVICE
))
285 /* Check these errors (active socket, double bind). */
286 if (sk
->sk_state
!= TCP_CLOSE
|| inet
->inet_num
) {
291 /* Check if the address belongs to the host. */
292 if (addr_type
== IPV6_ADDR_MAPPED
) {
295 /* Binding to v4-mapped address on a v6-only socket
298 if (sk
->sk_ipv6only
) {
303 /* Reproduce AF_INET checks to make the bindings consistent */
304 v4addr
= addr
->sin6_addr
.s6_addr32
[3];
305 chk_addr_ret
= inet_addr_type(net
, v4addr
);
306 if (!net
->ipv4
.sysctl_ip_nonlocal_bind
&&
307 !(inet
->freebind
|| inet
->transparent
) &&
308 v4addr
!= htonl(INADDR_ANY
) &&
309 chk_addr_ret
!= RTN_LOCAL
&&
310 chk_addr_ret
!= RTN_MULTICAST
&&
311 chk_addr_ret
!= RTN_BROADCAST
) {
312 err
= -EADDRNOTAVAIL
;
316 if (addr_type
!= IPV6_ADDR_ANY
) {
317 struct net_device
*dev
= NULL
;
320 if (__ipv6_addr_needs_scope_id(addr_type
)) {
321 if (addr_len
>= sizeof(struct sockaddr_in6
) &&
322 addr
->sin6_scope_id
) {
323 /* Override any existing binding, if another one
324 * is supplied by user.
326 sk
->sk_bound_dev_if
= addr
->sin6_scope_id
;
329 /* Binding to link-local address requires an interface */
330 if (!sk
->sk_bound_dev_if
) {
334 dev
= dev_get_by_index_rcu(net
, sk
->sk_bound_dev_if
);
341 /* ipv4 addr of the socket is invalid. Only the
342 * unspecified and mapped address have a v4 equivalent.
344 v4addr
= LOOPBACK4_IPV6
;
345 if (!(addr_type
& IPV6_ADDR_MULTICAST
)) {
346 if (!net
->ipv6
.sysctl
.ip_nonlocal_bind
&&
347 !(inet
->freebind
|| inet
->transparent
) &&
348 !ipv6_chk_addr(net
, &addr
->sin6_addr
,
350 err
= -EADDRNOTAVAIL
;
358 inet
->inet_rcv_saddr
= v4addr
;
359 inet
->inet_saddr
= v4addr
;
361 sk
->sk_v6_rcv_saddr
= addr
->sin6_addr
;
363 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
364 np
->saddr
= addr
->sin6_addr
;
366 /* Make sure we are allowed to bind here. */
367 if ((snum
|| !inet
->bind_address_no_port
) &&
368 sk
->sk_prot
->get_port(sk
, snum
)) {
369 inet_reset_saddr(sk
);
374 if (addr_type
!= IPV6_ADDR_ANY
) {
375 sk
->sk_userlocks
|= SOCK_BINDADDR_LOCK
;
376 if (addr_type
!= IPV6_ADDR_MAPPED
)
380 sk
->sk_userlocks
|= SOCK_BINDPORT_LOCK
;
381 inet
->inet_sport
= htons(inet
->inet_num
);
382 inet
->inet_dport
= 0;
383 inet
->inet_daddr
= 0;
391 EXPORT_SYMBOL(inet6_bind
);
393 int inet6_release(struct socket
*sock
)
395 struct sock
*sk
= sock
->sk
;
401 ipv6_sock_mc_close(sk
);
404 ipv6_sock_ac_close(sk
);
406 return inet_release(sock
);
408 EXPORT_SYMBOL(inet6_release
);
410 void inet6_destroy_sock(struct sock
*sk
)
412 struct ipv6_pinfo
*np
= inet6_sk(sk
);
414 struct ipv6_txoptions
*opt
;
416 /* Release rx options */
418 skb
= xchg(&np
->pktoptions
, NULL
);
422 skb
= xchg(&np
->rxpmtu
, NULL
);
426 /* Free flowlabels */
427 fl6_free_socklist(sk
);
429 /* Free tx options */
431 opt
= xchg(&np
->opt
, NULL
);
433 sock_kfree_s(sk
, opt
, opt
->tot_len
);
435 EXPORT_SYMBOL_GPL(inet6_destroy_sock
);
438 * This does both peername and sockname.
441 int inet6_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
442 int *uaddr_len
, int peer
)
444 struct sockaddr_in6
*sin
= (struct sockaddr_in6
*)uaddr
;
445 struct sock
*sk
= sock
->sk
;
446 struct inet_sock
*inet
= inet_sk(sk
);
447 struct ipv6_pinfo
*np
= inet6_sk(sk
);
449 sin
->sin6_family
= AF_INET6
;
450 sin
->sin6_flowinfo
= 0;
451 sin
->sin6_scope_id
= 0;
453 if (!inet
->inet_dport
)
455 if (((1 << sk
->sk_state
) & (TCPF_CLOSE
| TCPF_SYN_SENT
)) &&
458 sin
->sin6_port
= inet
->inet_dport
;
459 sin
->sin6_addr
= sk
->sk_v6_daddr
;
461 sin
->sin6_flowinfo
= np
->flow_label
;
463 if (ipv6_addr_any(&sk
->sk_v6_rcv_saddr
))
464 sin
->sin6_addr
= np
->saddr
;
466 sin
->sin6_addr
= sk
->sk_v6_rcv_saddr
;
468 sin
->sin6_port
= inet
->inet_sport
;
470 sin
->sin6_scope_id
= ipv6_iface_scope_id(&sin
->sin6_addr
,
471 sk
->sk_bound_dev_if
);
472 *uaddr_len
= sizeof(*sin
);
475 EXPORT_SYMBOL(inet6_getname
);
477 int inet6_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
479 struct sock
*sk
= sock
->sk
;
480 struct net
*net
= sock_net(sk
);
484 return sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
487 return sock_get_timestampns(sk
, (struct timespec __user
*)arg
);
492 return ipv6_route_ioctl(net
, cmd
, (void __user
*)arg
);
495 return addrconf_add_ifaddr(net
, (void __user
*) arg
);
497 return addrconf_del_ifaddr(net
, (void __user
*) arg
);
499 return addrconf_set_dstaddr(net
, (void __user
*) arg
);
501 if (!sk
->sk_prot
->ioctl
)
503 return sk
->sk_prot
->ioctl(sk
, cmd
, arg
);
508 EXPORT_SYMBOL(inet6_ioctl
);
510 const struct proto_ops inet6_stream_ops
= {
512 .owner
= THIS_MODULE
,
513 .release
= inet6_release
,
515 .connect
= inet_stream_connect
, /* ok */
516 .socketpair
= sock_no_socketpair
, /* a do nothing */
517 .accept
= inet_accept
, /* ok */
518 .getname
= inet6_getname
,
519 .poll
= tcp_poll
, /* ok */
520 .ioctl
= inet6_ioctl
, /* must change */
521 .listen
= inet_listen
, /* ok */
522 .shutdown
= inet_shutdown
, /* ok */
523 .setsockopt
= sock_common_setsockopt
, /* ok */
524 .getsockopt
= sock_common_getsockopt
, /* ok */
525 .sendmsg
= inet_sendmsg
, /* ok */
526 .recvmsg
= inet_recvmsg
, /* ok */
527 .mmap
= sock_no_mmap
,
528 .sendpage
= inet_sendpage
,
529 .splice_read
= tcp_splice_read
,
531 .compat_setsockopt
= compat_sock_common_setsockopt
,
532 .compat_getsockopt
= compat_sock_common_getsockopt
,
536 const struct proto_ops inet6_dgram_ops
= {
538 .owner
= THIS_MODULE
,
539 .release
= inet6_release
,
541 .connect
= inet_dgram_connect
, /* ok */
542 .socketpair
= sock_no_socketpair
, /* a do nothing */
543 .accept
= sock_no_accept
, /* a do nothing */
544 .getname
= inet6_getname
,
545 .poll
= udp_poll
, /* ok */
546 .ioctl
= inet6_ioctl
, /* must change */
547 .listen
= sock_no_listen
, /* ok */
548 .shutdown
= inet_shutdown
, /* ok */
549 .setsockopt
= sock_common_setsockopt
, /* ok */
550 .getsockopt
= sock_common_getsockopt
, /* ok */
551 .sendmsg
= inet_sendmsg
, /* ok */
552 .recvmsg
= inet_recvmsg
, /* ok */
553 .mmap
= sock_no_mmap
,
554 .sendpage
= sock_no_sendpage
,
556 .compat_setsockopt
= compat_sock_common_setsockopt
,
557 .compat_getsockopt
= compat_sock_common_getsockopt
,
561 static const struct net_proto_family inet6_family_ops
= {
563 .create
= inet6_create
,
564 .owner
= THIS_MODULE
,
567 int inet6_register_protosw(struct inet_protosw
*p
)
569 struct list_head
*lh
;
570 struct inet_protosw
*answer
;
571 struct list_head
*last_perm
;
572 int protocol
= p
->protocol
;
575 spin_lock_bh(&inetsw6_lock
);
578 if (p
->type
>= SOCK_MAX
)
581 /* If we are trying to override a permanent protocol, bail. */
584 last_perm
= &inetsw6
[p
->type
];
585 list_for_each(lh
, &inetsw6
[p
->type
]) {
586 answer
= list_entry(lh
, struct inet_protosw
, list
);
588 /* Check only the non-wild match. */
589 if (INET_PROTOSW_PERMANENT
& answer
->flags
) {
590 if (protocol
== answer
->protocol
)
600 /* Add the new entry after the last permanent entry if any, so that
601 * the new entry does not override a permanent entry when matched with
602 * a wild-card protocol. But it is allowed to override any existing
603 * non-permanent entry. This means that when we remove this entry, the
604 * system automatically returns to the old behavior.
606 list_add_rcu(&p
->list
, last_perm
);
609 spin_unlock_bh(&inetsw6_lock
);
613 pr_err("Attempt to override permanent protocol %d\n", protocol
);
617 pr_err("Ignoring attempt to register invalid socket type %d\n",
621 EXPORT_SYMBOL(inet6_register_protosw
);
624 inet6_unregister_protosw(struct inet_protosw
*p
)
626 if (INET_PROTOSW_PERMANENT
& p
->flags
) {
627 pr_err("Attempt to unregister permanent protocol %d\n",
630 spin_lock_bh(&inetsw6_lock
);
631 list_del_rcu(&p
->list
);
632 spin_unlock_bh(&inetsw6_lock
);
637 EXPORT_SYMBOL(inet6_unregister_protosw
);
639 int inet6_sk_rebuild_header(struct sock
*sk
)
641 struct ipv6_pinfo
*np
= inet6_sk(sk
);
642 struct dst_entry
*dst
;
644 dst
= __sk_dst_check(sk
, np
->dst_cookie
);
647 struct inet_sock
*inet
= inet_sk(sk
);
648 struct in6_addr
*final_p
, final
;
651 memset(&fl6
, 0, sizeof(fl6
));
652 fl6
.flowi6_proto
= sk
->sk_protocol
;
653 fl6
.daddr
= sk
->sk_v6_daddr
;
654 fl6
.saddr
= np
->saddr
;
655 fl6
.flowlabel
= np
->flow_label
;
656 fl6
.flowi6_oif
= sk
->sk_bound_dev_if
;
657 fl6
.flowi6_mark
= sk
->sk_mark
;
658 fl6
.fl6_dport
= inet
->inet_dport
;
659 fl6
.fl6_sport
= inet
->inet_sport
;
660 security_sk_classify_flow(sk
, flowi6_to_flowi(&fl6
));
662 final_p
= fl6_update_dst(&fl6
, np
->opt
, &final
);
664 dst
= ip6_dst_lookup_flow(sk
, &fl6
, final_p
);
666 sk
->sk_route_caps
= 0;
667 sk
->sk_err_soft
= -PTR_ERR(dst
);
671 __ip6_dst_store(sk
, dst
, NULL
, NULL
);
676 EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header
);
678 bool ipv6_opt_accepted(const struct sock
*sk
, const struct sk_buff
*skb
,
679 const struct inet6_skb_parm
*opt
)
681 const struct ipv6_pinfo
*np
= inet6_sk(sk
);
684 if (((opt
->flags
& IP6SKB_HOPBYHOP
) &&
685 (np
->rxopt
.bits
.hopopts
|| np
->rxopt
.bits
.ohopopts
)) ||
686 (ip6_flowinfo((struct ipv6hdr
*) skb_network_header(skb
)) &&
687 np
->rxopt
.bits
.rxflow
) ||
688 (opt
->srcrt
&& (np
->rxopt
.bits
.srcrt
||
689 np
->rxopt
.bits
.osrcrt
)) ||
690 ((opt
->dst1
|| opt
->dst0
) &&
691 (np
->rxopt
.bits
.dstopts
|| np
->rxopt
.bits
.odstopts
)))
696 EXPORT_SYMBOL_GPL(ipv6_opt_accepted
);
698 static struct packet_type ipv6_packet_type __read_mostly
= {
699 .type
= cpu_to_be16(ETH_P_IPV6
),
703 static int __init
ipv6_packet_init(void)
705 dev_add_pack(&ipv6_packet_type
);
709 static void ipv6_packet_cleanup(void)
711 dev_remove_pack(&ipv6_packet_type
);
714 static int __net_init
ipv6_init_mibs(struct net
*net
)
718 net
->mib
.udp_stats_in6
= alloc_percpu(struct udp_mib
);
719 if (!net
->mib
.udp_stats_in6
)
721 net
->mib
.udplite_stats_in6
= alloc_percpu(struct udp_mib
);
722 if (!net
->mib
.udplite_stats_in6
)
723 goto err_udplite_mib
;
724 net
->mib
.ipv6_statistics
= alloc_percpu(struct ipstats_mib
);
725 if (!net
->mib
.ipv6_statistics
)
728 for_each_possible_cpu(i
) {
729 struct ipstats_mib
*af_inet6_stats
;
730 af_inet6_stats
= per_cpu_ptr(net
->mib
.ipv6_statistics
, i
);
731 u64_stats_init(&af_inet6_stats
->syncp
);
735 net
->mib
.icmpv6_statistics
= alloc_percpu(struct icmpv6_mib
);
736 if (!net
->mib
.icmpv6_statistics
)
738 net
->mib
.icmpv6msg_statistics
= kzalloc(sizeof(struct icmpv6msg_mib
),
740 if (!net
->mib
.icmpv6msg_statistics
)
741 goto err_icmpmsg_mib
;
745 free_percpu(net
->mib
.icmpv6_statistics
);
747 free_percpu(net
->mib
.ipv6_statistics
);
749 free_percpu(net
->mib
.udplite_stats_in6
);
751 free_percpu(net
->mib
.udp_stats_in6
);
755 static void ipv6_cleanup_mibs(struct net
*net
)
757 free_percpu(net
->mib
.udp_stats_in6
);
758 free_percpu(net
->mib
.udplite_stats_in6
);
759 free_percpu(net
->mib
.ipv6_statistics
);
760 free_percpu(net
->mib
.icmpv6_statistics
);
761 kfree(net
->mib
.icmpv6msg_statistics
);
764 static int __net_init
inet6_net_init(struct net
*net
)
768 net
->ipv6
.sysctl
.bindv6only
= 0;
769 net
->ipv6
.sysctl
.icmpv6_time
= 1*HZ
;
770 net
->ipv6
.sysctl
.flowlabel_consistency
= 1;
771 net
->ipv6
.sysctl
.auto_flowlabels
= IP6_DEFAULT_AUTO_FLOW_LABELS
;
772 net
->ipv6
.sysctl
.idgen_retries
= 3;
773 net
->ipv6
.sysctl
.idgen_delay
= 1 * HZ
;
774 net
->ipv6
.sysctl
.flowlabel_state_ranges
= 0;
775 atomic_set(&net
->ipv6
.fib6_sernum
, 1);
777 err
= ipv6_init_mibs(net
);
780 #ifdef CONFIG_PROC_FS
781 err
= udp6_proc_init(net
);
784 err
= tcp6_proc_init(net
);
787 err
= ac6_proc_init(net
);
793 #ifdef CONFIG_PROC_FS
799 ipv6_cleanup_mibs(net
);
804 static void __net_exit
inet6_net_exit(struct net
*net
)
806 #ifdef CONFIG_PROC_FS
811 ipv6_cleanup_mibs(net
);
814 static struct pernet_operations inet6_net_ops
= {
815 .init
= inet6_net_init
,
816 .exit
= inet6_net_exit
,
819 static const struct ipv6_stub ipv6_stub_impl
= {
820 .ipv6_sock_mc_join
= ipv6_sock_mc_join
,
821 .ipv6_sock_mc_drop
= ipv6_sock_mc_drop
,
822 .ipv6_dst_lookup
= ip6_dst_lookup
,
823 .udpv6_encap_enable
= udpv6_encap_enable
,
824 .ndisc_send_na
= ndisc_send_na
,
828 static int __init
inet6_init(void)
833 sock_skb_cb_check_size(sizeof(struct inet6_skb_parm
));
835 /* Register the socket-side information for inet6_create. */
836 for (r
= &inetsw6
[0]; r
< &inetsw6
[SOCK_MAX
]; ++r
)
839 if (disable_ipv6_mod
) {
840 pr_info("Loaded, but administratively disabled, reboot required to enable\n");
844 err
= proto_register(&tcpv6_prot
, 1);
848 err
= proto_register(&udpv6_prot
, 1);
850 goto out_unregister_tcp_proto
;
852 err
= proto_register(&udplitev6_prot
, 1);
854 goto out_unregister_udp_proto
;
856 err
= proto_register(&rawv6_prot
, 1);
858 goto out_unregister_udplite_proto
;
860 err
= proto_register(&pingv6_prot
, 1);
862 goto out_unregister_ping_proto
;
864 /* We MUST register RAW sockets before we create the ICMP6,
865 * IGMP6, or NDISC control sockets.
869 goto out_unregister_raw_proto
;
871 /* Register the family here so that the init calls below will
872 * be able to create sockets. (?? is this dangerous ??)
874 err
= sock_register(&inet6_family_ops
);
876 goto out_sock_register_fail
;
879 * ipngwg API draft makes clear that the correct semantics
880 * for TCP and UDP is to consider one TCP and UDP instance
881 * in a host available by both INET and INET6 APIs and
882 * able to communicate via both network protocols.
885 err
= register_pernet_subsys(&inet6_net_ops
);
887 goto register_pernet_fail
;
901 ipv6_stub
= &ipv6_stub_impl
;
903 err
= ipv6_netfilter_init();
906 /* Create /proc/foo6 entries. */
907 #ifdef CONFIG_PROC_FS
909 if (raw6_proc_init())
911 if (udplite6_proc_init())
912 goto proc_udplite6_fail
;
913 if (ipv6_misc_proc_init())
914 goto proc_misc6_fail
;
918 err
= ip6_route_init();
921 err
= ndisc_late_init();
923 goto ndisc_late_fail
;
924 err
= ip6_flowlabel_init();
926 goto ip6_flowlabel_fail
;
927 err
= addrconf_init();
931 /* Init v6 extension headers. */
932 err
= ipv6_exthdrs_init();
934 goto ipv6_exthdrs_fail
;
936 err
= ipv6_frag_init();
940 /* Init v6 transport protocols. */
945 err
= udplitev6_init();
953 err
= ipv6_packet_init();
955 goto ipv6_packet_fail
;
962 err
= ipv6_sysctl_register();
974 ipv6_packet_cleanup();
988 ip6_flowlabel_cleanup();
990 ndisc_late_cleanup();
994 #ifdef CONFIG_PROC_FS
997 ipv6_misc_proc_exit();
999 udplite6_proc_exit();
1004 ipv6_netfilter_fini();
1014 unregister_pernet_subsys(&inet6_net_ops
);
1015 register_pernet_fail
:
1016 sock_unregister(PF_INET6
);
1017 rtnl_unregister_all(PF_INET6
);
1018 out_sock_register_fail
:
1020 out_unregister_ping_proto
:
1021 proto_unregister(&pingv6_prot
);
1022 out_unregister_raw_proto
:
1023 proto_unregister(&rawv6_prot
);
1024 out_unregister_udplite_proto
:
1025 proto_unregister(&udplitev6_prot
);
1026 out_unregister_udp_proto
:
1027 proto_unregister(&udpv6_prot
);
1028 out_unregister_tcp_proto
:
1029 proto_unregister(&tcpv6_prot
);
1032 module_init(inet6_init
);
1034 MODULE_ALIAS_NETPROTO(PF_INET6
);