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
10 * $Id: af_inet6.c,v 1.66 2002/02/01 22:01:04 davem Exp $
13 * piggy, Karl Knutson : Socket protocol table
14 * Hideaki YOSHIFUJI : sin6_scope_id support
15 * Arnaldo Melo : check proc_net_create return, cleanups
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License
19 * as published by the Free Software Foundation; either version
20 * 2 of the License, or (at your option) any later version.
24 #include <linux/module.h>
25 #include <linux/capability.h>
26 #include <linux/errno.h>
27 #include <linux/types.h>
28 #include <linux/socket.h>
30 #include <linux/kernel.h>
31 #include <linux/timer.h>
32 #include <linux/string.h>
33 #include <linux/sockios.h>
34 #include <linux/net.h>
35 #include <linux/fcntl.h>
37 #include <linux/interrupt.h>
38 #include <linux/proc_fs.h>
39 #include <linux/stat.h>
40 #include <linux/init.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/transp_v6.h>
56 #include <net/ip6_route.h>
57 #include <net/addrconf.h>
58 #ifdef CONFIG_IPV6_TUNNEL
59 #include <net/ip6_tunnel.h>
62 #include <asm/uaccess.h>
63 #include <asm/system.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
;
88 struct inet_protosw
*answer
;
89 struct proto
*answer_prot
;
90 unsigned char answer_flags
;
92 int try_loading_module
= 0;
95 if (sock
->type
!= SOCK_RAW
&&
96 sock
->type
!= SOCK_DGRAM
&&
100 /* Look for the requested type/protocol pair. */
103 err
= -ESOCKTNOSUPPORT
;
105 list_for_each_rcu(p
, &inetsw6
[sock
->type
]) {
106 answer
= list_entry(p
, struct inet_protosw
, list
);
108 /* Check the non-wild match. */
109 if (protocol
== answer
->protocol
) {
110 if (protocol
!= IPPROTO_IP
)
113 /* Check for the two wild cases. */
114 if (IPPROTO_IP
== protocol
) {
115 protocol
= answer
->protocol
;
118 if (IPPROTO_IP
== answer
->protocol
)
121 err
= -EPROTONOSUPPORT
;
126 if (try_loading_module
< 2) {
129 * Be more specific, e.g. net-pf-10-proto-132-type-1
130 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
132 if (++try_loading_module
== 1)
133 request_module("net-pf-%d-proto-%d-type-%d",
134 PF_INET6
, protocol
, sock
->type
);
136 * Fall back to generic, e.g. net-pf-10-proto-132
137 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
140 request_module("net-pf-%d-proto-%d",
142 goto lookup_protocol
;
148 if (answer
->capability
> 0 && !capable(answer
->capability
))
151 sock
->ops
= answer
->ops
;
152 answer_prot
= answer
->prot
;
153 answer_no_check
= answer
->no_check
;
154 answer_flags
= answer
->flags
;
157 BUG_TRAP(answer_prot
->slab
!= NULL
);
160 sk
= sk_alloc(net
, PF_INET6
, GFP_KERNEL
, answer_prot
);
164 sock_init_data(sock
, sk
);
167 sk
->sk_no_check
= answer_no_check
;
168 if (INET_PROTOSW_REUSE
& answer_flags
)
172 inet
->is_icsk
= (INET_PROTOSW_ICSK
& answer_flags
) != 0;
174 if (SOCK_RAW
== sock
->type
) {
175 inet
->num
= protocol
;
176 if (IPPROTO_RAW
== protocol
)
180 sk
->sk_destruct
= inet_sock_destruct
;
181 sk
->sk_family
= PF_INET6
;
182 sk
->sk_protocol
= protocol
;
184 sk
->sk_backlog_rcv
= answer
->prot
->backlog_rcv
;
186 inet_sk(sk
)->pinet6
= np
= inet6_sk_generic(sk
);
190 np
->pmtudisc
= IPV6_PMTUDISC_WANT
;
191 np
->ipv6only
= init_net
.ipv6
.sysctl
.bindv6only
;
193 /* Init the ipv4 part of the socket since we can have sockets
194 * using v6 API for ipv4.
201 inet
->mc_list
= NULL
;
203 if (ipv4_config
.no_pmtu_disc
)
204 inet
->pmtudisc
= IP_PMTUDISC_DONT
;
206 inet
->pmtudisc
= IP_PMTUDISC_WANT
;
208 * Increment only the relevant sk_prot->socks debug field, this changes
209 * the previous behaviour of incrementing both the equivalent to
210 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
212 * This allows better debug granularity as we'll know exactly how many
213 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
214 * transport protocol socks. -acme
216 sk_refcnt_debug_inc(sk
);
219 /* It assumes that any protocol which allows
220 * the user to assign a number at socket
221 * creation time automatically shares.
223 inet
->sport
= htons(inet
->num
);
224 sk
->sk_prot
->hash(sk
);
226 if (sk
->sk_prot
->init
) {
227 err
= sk
->sk_prot
->init(sk
);
229 sk_common_release(sk
);
241 /* bind for INET6 API */
242 int inet6_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
244 struct sockaddr_in6
*addr
=(struct sockaddr_in6
*)uaddr
;
245 struct sock
*sk
= sock
->sk
;
246 struct inet_sock
*inet
= inet_sk(sk
);
247 struct ipv6_pinfo
*np
= inet6_sk(sk
);
248 struct net
*net
= sk
->sk_net
;
254 /* If the socket has its own bind function then use it. */
255 if (sk
->sk_prot
->bind
)
256 return sk
->sk_prot
->bind(sk
, uaddr
, addr_len
);
258 if (addr_len
< SIN6_LEN_RFC2133
)
260 addr_type
= ipv6_addr_type(&addr
->sin6_addr
);
261 if ((addr_type
& IPV6_ADDR_MULTICAST
) && sock
->type
== SOCK_STREAM
)
264 snum
= ntohs(addr
->sin6_port
);
265 if (snum
&& snum
< PROT_SOCK
&& !capable(CAP_NET_BIND_SERVICE
))
270 /* Check these errors (active socket, double bind). */
271 if (sk
->sk_state
!= TCP_CLOSE
|| inet
->num
) {
276 /* Check if the address belongs to the host. */
277 if (addr_type
== IPV6_ADDR_MAPPED
) {
278 v4addr
= addr
->sin6_addr
.s6_addr32
[3];
279 if (inet_addr_type(net
, v4addr
) != RTN_LOCAL
) {
280 err
= -EADDRNOTAVAIL
;
284 if (addr_type
!= IPV6_ADDR_ANY
) {
285 struct net_device
*dev
= NULL
;
287 if (addr_type
& IPV6_ADDR_LINKLOCAL
) {
288 if (addr_len
>= sizeof(struct sockaddr_in6
) &&
289 addr
->sin6_scope_id
) {
290 /* Override any existing binding, if another one
291 * is supplied by user.
293 sk
->sk_bound_dev_if
= addr
->sin6_scope_id
;
296 /* Binding to link-local address requires an interface */
297 if (!sk
->sk_bound_dev_if
) {
301 dev
= dev_get_by_index(net
, sk
->sk_bound_dev_if
);
308 /* ipv4 addr of the socket is invalid. Only the
309 * unspecified and mapped address have a v4 equivalent.
311 v4addr
= LOOPBACK4_IPV6
;
312 if (!(addr_type
& IPV6_ADDR_MULTICAST
)) {
313 if (!ipv6_chk_addr(net
, &addr
->sin6_addr
,
317 err
= -EADDRNOTAVAIL
;
326 inet
->rcv_saddr
= v4addr
;
327 inet
->saddr
= v4addr
;
329 ipv6_addr_copy(&np
->rcv_saddr
, &addr
->sin6_addr
);
331 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
332 ipv6_addr_copy(&np
->saddr
, &addr
->sin6_addr
);
334 /* Make sure we are allowed to bind here. */
335 if (sk
->sk_prot
->get_port(sk
, snum
)) {
336 inet_reset_saddr(sk
);
341 if (addr_type
!= IPV6_ADDR_ANY
)
342 sk
->sk_userlocks
|= SOCK_BINDADDR_LOCK
;
344 sk
->sk_userlocks
|= SOCK_BINDPORT_LOCK
;
345 inet
->sport
= htons(inet
->num
);
353 EXPORT_SYMBOL(inet6_bind
);
355 int inet6_release(struct socket
*sock
)
357 struct sock
*sk
= sock
->sk
;
363 ipv6_sock_mc_close(sk
);
366 ipv6_sock_ac_close(sk
);
368 return inet_release(sock
);
371 EXPORT_SYMBOL(inet6_release
);
373 int inet6_destroy_sock(struct sock
*sk
)
375 struct ipv6_pinfo
*np
= inet6_sk(sk
);
377 struct ipv6_txoptions
*opt
;
379 /* Release rx options */
381 if ((skb
= xchg(&np
->pktoptions
, NULL
)) != NULL
)
384 /* Free flowlabels */
385 fl6_free_socklist(sk
);
387 /* Free tx options */
389 if ((opt
= xchg(&np
->opt
, NULL
)) != NULL
)
390 sock_kfree_s(sk
, opt
, opt
->tot_len
);
395 EXPORT_SYMBOL_GPL(inet6_destroy_sock
);
398 * This does both peername and sockname.
401 int inet6_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
402 int *uaddr_len
, int peer
)
404 struct sockaddr_in6
*sin
=(struct sockaddr_in6
*)uaddr
;
405 struct sock
*sk
= sock
->sk
;
406 struct inet_sock
*inet
= inet_sk(sk
);
407 struct ipv6_pinfo
*np
= inet6_sk(sk
);
409 sin
->sin6_family
= AF_INET6
;
410 sin
->sin6_flowinfo
= 0;
411 sin
->sin6_scope_id
= 0;
415 if (((1 << sk
->sk_state
) & (TCPF_CLOSE
| TCPF_SYN_SENT
)) &&
418 sin
->sin6_port
= inet
->dport
;
419 ipv6_addr_copy(&sin
->sin6_addr
, &np
->daddr
);
421 sin
->sin6_flowinfo
= np
->flow_label
;
423 if (ipv6_addr_any(&np
->rcv_saddr
))
424 ipv6_addr_copy(&sin
->sin6_addr
, &np
->saddr
);
426 ipv6_addr_copy(&sin
->sin6_addr
, &np
->rcv_saddr
);
428 sin
->sin6_port
= inet
->sport
;
430 if (ipv6_addr_type(&sin
->sin6_addr
) & IPV6_ADDR_LINKLOCAL
)
431 sin
->sin6_scope_id
= sk
->sk_bound_dev_if
;
432 *uaddr_len
= sizeof(*sin
);
436 EXPORT_SYMBOL(inet6_getname
);
438 int inet6_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
440 struct sock
*sk
= sock
->sk
;
441 struct net
*net
= sk
->sk_net
;
446 return sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
449 return sock_get_timestampns(sk
, (struct timespec __user
*)arg
);
454 return(ipv6_route_ioctl(net
, cmd
, (void __user
*)arg
));
457 return addrconf_add_ifaddr((void __user
*) arg
);
459 return addrconf_del_ifaddr((void __user
*) arg
);
461 return addrconf_set_dstaddr((void __user
*) arg
);
463 if (!sk
->sk_prot
->ioctl
)
465 return sk
->sk_prot
->ioctl(sk
, cmd
, arg
);
471 EXPORT_SYMBOL(inet6_ioctl
);
473 const struct proto_ops inet6_stream_ops
= {
475 .owner
= THIS_MODULE
,
476 .release
= inet6_release
,
478 .connect
= inet_stream_connect
, /* ok */
479 .socketpair
= sock_no_socketpair
, /* a do nothing */
480 .accept
= inet_accept
, /* ok */
481 .getname
= inet6_getname
,
482 .poll
= tcp_poll
, /* ok */
483 .ioctl
= inet6_ioctl
, /* must change */
484 .listen
= inet_listen
, /* ok */
485 .shutdown
= inet_shutdown
, /* ok */
486 .setsockopt
= sock_common_setsockopt
, /* ok */
487 .getsockopt
= sock_common_getsockopt
, /* ok */
488 .sendmsg
= tcp_sendmsg
, /* ok */
489 .recvmsg
= sock_common_recvmsg
, /* ok */
490 .mmap
= sock_no_mmap
,
491 .sendpage
= tcp_sendpage
,
492 .splice_read
= tcp_splice_read
,
494 .compat_setsockopt
= compat_sock_common_setsockopt
,
495 .compat_getsockopt
= compat_sock_common_getsockopt
,
499 const struct proto_ops inet6_dgram_ops
= {
501 .owner
= THIS_MODULE
,
502 .release
= inet6_release
,
504 .connect
= inet_dgram_connect
, /* ok */
505 .socketpair
= sock_no_socketpair
, /* a do nothing */
506 .accept
= sock_no_accept
, /* a do nothing */
507 .getname
= inet6_getname
,
508 .poll
= udp_poll
, /* ok */
509 .ioctl
= inet6_ioctl
, /* must change */
510 .listen
= sock_no_listen
, /* ok */
511 .shutdown
= inet_shutdown
, /* ok */
512 .setsockopt
= sock_common_setsockopt
, /* ok */
513 .getsockopt
= sock_common_getsockopt
, /* ok */
514 .sendmsg
= inet_sendmsg
, /* ok */
515 .recvmsg
= sock_common_recvmsg
, /* ok */
516 .mmap
= sock_no_mmap
,
517 .sendpage
= sock_no_sendpage
,
519 .compat_setsockopt
= compat_sock_common_setsockopt
,
520 .compat_getsockopt
= compat_sock_common_getsockopt
,
524 static struct net_proto_family inet6_family_ops
= {
526 .create
= inet6_create
,
527 .owner
= THIS_MODULE
,
530 int inet6_register_protosw(struct inet_protosw
*p
)
532 struct list_head
*lh
;
533 struct inet_protosw
*answer
;
534 struct list_head
*last_perm
;
535 int protocol
= p
->protocol
;
538 spin_lock_bh(&inetsw6_lock
);
541 if (p
->type
>= SOCK_MAX
)
544 /* If we are trying to override a permanent protocol, bail. */
547 last_perm
= &inetsw6
[p
->type
];
548 list_for_each(lh
, &inetsw6
[p
->type
]) {
549 answer
= list_entry(lh
, struct inet_protosw
, list
);
551 /* Check only the non-wild match. */
552 if (INET_PROTOSW_PERMANENT
& answer
->flags
) {
553 if (protocol
== answer
->protocol
)
563 /* Add the new entry after the last permanent entry if any, so that
564 * the new entry does not override a permanent entry when matched with
565 * a wild-card protocol. But it is allowed to override any existing
566 * non-permanent entry. This means that when we remove this entry, the
567 * system automatically returns to the old behavior.
569 list_add_rcu(&p
->list
, last_perm
);
572 spin_unlock_bh(&inetsw6_lock
);
576 printk(KERN_ERR
"Attempt to override permanent protocol %d.\n",
582 "Ignoring attempt to register invalid socket type %d.\n",
587 EXPORT_SYMBOL(inet6_register_protosw
);
590 inet6_unregister_protosw(struct inet_protosw
*p
)
592 if (INET_PROTOSW_PERMANENT
& p
->flags
) {
594 "Attempt to unregister permanent protocol %d.\n",
597 spin_lock_bh(&inetsw6_lock
);
598 list_del_rcu(&p
->list
);
599 spin_unlock_bh(&inetsw6_lock
);
605 EXPORT_SYMBOL(inet6_unregister_protosw
);
607 int inet6_sk_rebuild_header(struct sock
*sk
)
610 struct dst_entry
*dst
;
611 struct ipv6_pinfo
*np
= inet6_sk(sk
);
613 dst
= __sk_dst_check(sk
, np
->dst_cookie
);
616 struct inet_sock
*inet
= inet_sk(sk
);
617 struct in6_addr
*final_p
= NULL
, final
;
620 memset(&fl
, 0, sizeof(fl
));
621 fl
.proto
= sk
->sk_protocol
;
622 ipv6_addr_copy(&fl
.fl6_dst
, &np
->daddr
);
623 ipv6_addr_copy(&fl
.fl6_src
, &np
->saddr
);
624 fl
.fl6_flowlabel
= np
->flow_label
;
625 fl
.oif
= sk
->sk_bound_dev_if
;
626 fl
.fl_ip_dport
= inet
->dport
;
627 fl
.fl_ip_sport
= inet
->sport
;
628 security_sk_classify_flow(sk
, &fl
);
630 if (np
->opt
&& np
->opt
->srcrt
) {
631 struct rt0_hdr
*rt0
= (struct rt0_hdr
*) np
->opt
->srcrt
;
632 ipv6_addr_copy(&final
, &fl
.fl6_dst
);
633 ipv6_addr_copy(&fl
.fl6_dst
, rt0
->addr
);
637 err
= ip6_dst_lookup(sk
, &dst
, &fl
);
639 sk
->sk_route_caps
= 0;
643 ipv6_addr_copy(&fl
.fl6_dst
, final_p
);
645 if ((err
= xfrm_lookup(&dst
, &fl
, sk
, 0)) < 0) {
646 sk
->sk_err_soft
= -err
;
650 __ip6_dst_store(sk
, dst
, NULL
, NULL
);
656 EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header
);
658 int ipv6_opt_accepted(struct sock
*sk
, struct sk_buff
*skb
)
660 struct ipv6_pinfo
*np
= inet6_sk(sk
);
661 struct inet6_skb_parm
*opt
= IP6CB(skb
);
664 if ((opt
->hop
&& (np
->rxopt
.bits
.hopopts
||
665 np
->rxopt
.bits
.ohopopts
)) ||
666 ((IPV6_FLOWINFO_MASK
&
667 *(__be32
*)skb_network_header(skb
)) &&
668 np
->rxopt
.bits
.rxflow
) ||
669 (opt
->srcrt
&& (np
->rxopt
.bits
.srcrt
||
670 np
->rxopt
.bits
.osrcrt
)) ||
671 ((opt
->dst1
|| opt
->dst0
) &&
672 (np
->rxopt
.bits
.dstopts
|| np
->rxopt
.bits
.odstopts
)))
678 EXPORT_SYMBOL_GPL(ipv6_opt_accepted
);
680 static struct inet6_protocol
*ipv6_gso_pull_exthdrs(struct sk_buff
*skb
,
683 struct inet6_protocol
*ops
= NULL
;
686 struct ipv6_opt_hdr
*opth
;
689 if (proto
!= NEXTHDR_HOP
) {
690 ops
= rcu_dereference(inet6_protos
[proto
]);
695 if (!(ops
->flags
& INET6_PROTO_GSO_EXTHDR
))
699 if (unlikely(!pskb_may_pull(skb
, 8)))
702 opth
= (void *)skb
->data
;
703 len
= ipv6_optlen(opth
);
705 if (unlikely(!pskb_may_pull(skb
, len
)))
708 proto
= opth
->nexthdr
;
709 __skb_pull(skb
, len
);
715 static int ipv6_gso_send_check(struct sk_buff
*skb
)
717 struct ipv6hdr
*ipv6h
;
718 struct inet6_protocol
*ops
;
721 if (unlikely(!pskb_may_pull(skb
, sizeof(*ipv6h
))))
724 ipv6h
= ipv6_hdr(skb
);
725 __skb_pull(skb
, sizeof(*ipv6h
));
726 err
= -EPROTONOSUPPORT
;
729 ops
= ipv6_gso_pull_exthdrs(skb
, ipv6h
->nexthdr
);
730 if (likely(ops
&& ops
->gso_send_check
)) {
731 skb_reset_transport_header(skb
);
732 err
= ops
->gso_send_check(skb
);
740 static struct sk_buff
*ipv6_gso_segment(struct sk_buff
*skb
, int features
)
742 struct sk_buff
*segs
= ERR_PTR(-EINVAL
);
743 struct ipv6hdr
*ipv6h
;
744 struct inet6_protocol
*ops
;
746 if (!(features
& NETIF_F_V6_CSUM
))
747 features
&= ~NETIF_F_SG
;
749 if (unlikely(skb_shinfo(skb
)->gso_type
&
757 if (unlikely(!pskb_may_pull(skb
, sizeof(*ipv6h
))))
760 ipv6h
= ipv6_hdr(skb
);
761 __skb_pull(skb
, sizeof(*ipv6h
));
762 segs
= ERR_PTR(-EPROTONOSUPPORT
);
765 ops
= ipv6_gso_pull_exthdrs(skb
, ipv6h
->nexthdr
);
766 if (likely(ops
&& ops
->gso_segment
)) {
767 skb_reset_transport_header(skb
);
768 segs
= ops
->gso_segment(skb
, features
);
772 if (unlikely(IS_ERR(segs
)))
775 for (skb
= segs
; skb
; skb
= skb
->next
) {
776 ipv6h
= ipv6_hdr(skb
);
777 ipv6h
->payload_len
= htons(skb
->len
- skb
->mac_len
-
785 static struct packet_type ipv6_packet_type
= {
786 .type
= __constant_htons(ETH_P_IPV6
),
788 .gso_send_check
= ipv6_gso_send_check
,
789 .gso_segment
= ipv6_gso_segment
,
792 static int __init
ipv6_packet_init(void)
794 dev_add_pack(&ipv6_packet_type
);
798 static void ipv6_packet_cleanup(void)
800 dev_remove_pack(&ipv6_packet_type
);
803 static int __init
init_ipv6_mibs(void)
805 if (snmp_mib_init((void **)ipv6_statistics
,
806 sizeof(struct ipstats_mib
)) < 0)
808 if (snmp_mib_init((void **)icmpv6_statistics
,
809 sizeof(struct icmpv6_mib
)) < 0)
811 if (snmp_mib_init((void **)icmpv6msg_statistics
,
812 sizeof(struct icmpv6msg_mib
)) < 0)
813 goto err_icmpmsg_mib
;
814 if (snmp_mib_init((void **)udp_stats_in6
, sizeof (struct udp_mib
)) < 0)
816 #ifdef CONFIG_IP_UDPLITE
817 if (snmp_mib_init((void **)udplite_stats_in6
,
818 sizeof (struct udp_mib
)) < 0)
819 goto err_udplite_mib
;
823 #ifdef CONFIG_IP_UDPLITE
826 snmp_mib_free((void **)udp_stats_in6
);
828 snmp_mib_free((void **)icmpv6msg_statistics
);
830 snmp_mib_free((void **)icmpv6_statistics
);
832 snmp_mib_free((void **)ipv6_statistics
);
838 static void cleanup_ipv6_mibs(void)
840 snmp_mib_free((void **)ipv6_statistics
);
841 snmp_mib_free((void **)icmpv6_statistics
);
842 snmp_mib_free((void **)icmpv6msg_statistics
);
843 snmp_mib_free((void **)udp_stats_in6
);
844 #ifdef CONFIG_IP_UDPLITE
845 snmp_mib_free((void **)udplite_stats_in6
);
849 static int inet6_net_init(struct net
*net
)
851 net
->ipv6
.sysctl
.bindv6only
= 0;
852 net
->ipv6
.sysctl
.flush_delay
= 0;
853 net
->ipv6
.sysctl
.ip6_rt_max_size
= 4096;
854 net
->ipv6
.sysctl
.ip6_rt_gc_min_interval
= HZ
/ 2;
855 net
->ipv6
.sysctl
.ip6_rt_gc_timeout
= 60*HZ
;
856 net
->ipv6
.sysctl
.ip6_rt_gc_interval
= 30*HZ
;
857 net
->ipv6
.sysctl
.ip6_rt_gc_elasticity
= 9;
858 net
->ipv6
.sysctl
.ip6_rt_mtu_expires
= 10*60*HZ
;
859 net
->ipv6
.sysctl
.ip6_rt_min_advmss
= IPV6_MIN_MTU
- 20 - 40;
860 net
->ipv6
.sysctl
.icmpv6_time
= 1*HZ
;
865 static void inet6_net_exit(struct net
*net
)
870 static struct pernet_operations inet6_net_ops
= {
871 .init
= inet6_net_init
,
872 .exit
= inet6_net_exit
,
875 static int __init
inet6_init(void)
877 struct sk_buff
*dummy_skb
;
881 BUILD_BUG_ON(sizeof(struct inet6_skb_parm
) > sizeof(dummy_skb
->cb
));
883 err
= proto_register(&tcpv6_prot
, 1);
887 err
= proto_register(&udpv6_prot
, 1);
889 goto out_unregister_tcp_proto
;
891 #ifdef CONFIG_IP_UDPLITE
892 err
= proto_register(&udplitev6_prot
, 1);
894 goto out_unregister_udp_proto
;
897 err
= proto_register(&rawv6_prot
, 1);
899 goto out_unregister_udplite_proto
;
902 /* Register the socket-side information for inet6_create. */
903 for(r
= &inetsw6
[0]; r
< &inetsw6
[SOCK_MAX
]; ++r
)
906 /* We MUST register RAW sockets before we create the ICMP6,
907 * IGMP6, or NDISC control sockets.
911 goto out_unregister_raw_proto
;
913 /* Register the family here so that the init calls below will
914 * be able to create sockets. (?? is this dangerous ??)
916 err
= sock_register(&inet6_family_ops
);
918 goto out_sock_register_fail
;
920 /* Initialise ipv6 mibs */
921 err
= init_ipv6_mibs();
923 goto out_unregister_sock
;
926 * ipngwg API draft makes clear that the correct semantics
927 * for TCP and UDP is to consider one TCP and UDP instance
928 * in a host availiable by both INET and INET6 APIs and
929 * able to communicate via both network protocols.
932 err
= register_pernet_subsys(&inet6_net_ops
);
934 goto register_pernet_fail
;
944 err
= ipv6_netfilter_init();
947 /* Create /proc/foo6 entries. */
948 #ifdef CONFIG_PROC_FS
950 if (raw6_proc_init())
952 if (tcp6_proc_init())
954 if (udp6_proc_init())
956 if (udplite6_proc_init())
957 goto proc_udplite6_fail
;
958 if (ipv6_misc_proc_init())
959 goto proc_misc6_fail
;
962 goto proc_anycast6_fail
;
966 err
= ip6_route_init();
969 err
= ip6_flowlabel_init();
971 goto ip6_flowlabel_fail
;
972 err
= addrconf_init();
976 /* Init v6 extension headers. */
977 err
= ipv6_exthdrs_init();
979 goto ipv6_exthdrs_fail
;
981 err
= ipv6_frag_init();
985 /* Init v6 transport protocols. */
990 err
= udplitev6_init();
998 err
= ipv6_packet_init();
1000 goto ipv6_packet_fail
;
1002 #ifdef CONFIG_SYSCTL
1003 err
= ipv6_sysctl_register();
1010 #ifdef CONFIG_SYSCTL
1012 ipv6_packet_cleanup();
1023 ipv6_exthdrs_exit();
1027 ip6_flowlabel_cleanup();
1029 ip6_route_cleanup();
1031 #ifdef CONFIG_PROC_FS
1036 ipv6_misc_proc_exit();
1038 udplite6_proc_exit();
1047 ipv6_netfilter_fini();
1055 unregister_pernet_subsys(&inet6_net_ops
);
1056 register_pernet_fail
:
1057 cleanup_ipv6_mibs();
1058 out_unregister_sock
:
1059 sock_unregister(PF_INET6
);
1060 rtnl_unregister_all(PF_INET6
);
1061 out_sock_register_fail
:
1063 out_unregister_raw_proto
:
1064 proto_unregister(&rawv6_prot
);
1065 out_unregister_udplite_proto
:
1066 #ifdef CONFIG_IP_UDPLITE
1067 proto_unregister(&udplitev6_prot
);
1068 out_unregister_udp_proto
:
1070 proto_unregister(&udpv6_prot
);
1071 out_unregister_tcp_proto
:
1072 proto_unregister(&tcpv6_prot
);
1075 module_init(inet6_init
);
1077 static void __exit
inet6_exit(void)
1079 /* First of all disallow new sockets creation. */
1080 sock_unregister(PF_INET6
);
1081 /* Disallow any further netlink messages */
1082 rtnl_unregister_all(PF_INET6
);
1084 #ifdef CONFIG_SYSCTL
1085 ipv6_sysctl_unregister();
1088 #ifdef CONFIG_IP_UDPLITE
1093 /* Cleanup code parts. */
1094 ipv6_packet_cleanup();
1096 ipv6_exthdrs_exit();
1098 ip6_flowlabel_cleanup();
1099 ip6_route_cleanup();
1100 #ifdef CONFIG_PROC_FS
1102 /* Cleanup code parts. */
1105 ipv6_misc_proc_exit();
1106 udplite6_proc_exit();
1111 ipv6_netfilter_fini();
1117 unregister_pernet_subsys(&inet6_net_ops
);
1118 cleanup_ipv6_mibs();
1119 proto_unregister(&rawv6_prot
);
1120 #ifdef CONFIG_IP_UDPLITE
1121 proto_unregister(&udplitev6_prot
);
1123 proto_unregister(&udpv6_prot
);
1124 proto_unregister(&tcpv6_prot
);
1126 module_exit(inet6_exit
);
1128 MODULE_ALIAS_NETPROTO(PF_INET6
);