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/transp_v6.h>
54 #include <net/ip6_route.h>
55 #include <net/addrconf.h>
56 #ifdef CONFIG_IPV6_TUNNEL
57 #include <net/ip6_tunnel.h>
60 #include <asm/uaccess.h>
61 #include <asm/system.h>
62 #include <linux/mroute6.h>
64 MODULE_AUTHOR("Cast of dozens");
65 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
66 MODULE_LICENSE("GPL");
68 /* The inetsw6 table contains everything that inet6_create needs to
71 static struct list_head inetsw6
[SOCK_MAX
];
72 static DEFINE_SPINLOCK(inetsw6_lock
);
74 static __inline__
struct ipv6_pinfo
*inet6_sk_generic(struct sock
*sk
)
76 const int offset
= sk
->sk_prot
->obj_size
- sizeof(struct ipv6_pinfo
);
78 return (struct ipv6_pinfo
*)(((u8
*)sk
) + offset
);
81 static int inet6_create(struct net
*net
, struct socket
*sock
, int protocol
)
83 struct inet_sock
*inet
;
84 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. */
102 err
= -ESOCKTNOSUPPORT
;
104 list_for_each_rcu(p
, &inetsw6
[sock
->type
]) {
105 answer
= list_entry(p
, struct inet_protosw
, list
);
107 /* Check the non-wild match. */
108 if (protocol
== answer
->protocol
) {
109 if (protocol
!= IPPROTO_IP
)
112 /* Check for the two wild cases. */
113 if (IPPROTO_IP
== protocol
) {
114 protocol
= answer
->protocol
;
117 if (IPPROTO_IP
== answer
->protocol
)
120 err
= -EPROTONOSUPPORT
;
125 if (try_loading_module
< 2) {
128 * Be more specific, e.g. net-pf-10-proto-132-type-1
129 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
131 if (++try_loading_module
== 1)
132 request_module("net-pf-%d-proto-%d-type-%d",
133 PF_INET6
, protocol
, sock
->type
);
135 * Fall back to generic, e.g. net-pf-10-proto-132
136 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
139 request_module("net-pf-%d-proto-%d",
141 goto lookup_protocol
;
147 if (answer
->capability
> 0 && !capable(answer
->capability
))
150 sock
->ops
= answer
->ops
;
151 answer_prot
= answer
->prot
;
152 answer_no_check
= answer
->no_check
;
153 answer_flags
= answer
->flags
;
156 BUG_TRAP(answer_prot
->slab
!= NULL
);
159 sk
= sk_alloc(net
, PF_INET6
, GFP_KERNEL
, answer_prot
);
163 sock_init_data(sock
, sk
);
166 sk
->sk_no_check
= answer_no_check
;
167 if (INET_PROTOSW_REUSE
& answer_flags
)
171 inet
->is_icsk
= (INET_PROTOSW_ICSK
& answer_flags
) != 0;
173 if (SOCK_RAW
== sock
->type
) {
174 inet
->num
= protocol
;
175 if (IPPROTO_RAW
== protocol
)
179 sk
->sk_destruct
= inet_sock_destruct
;
180 sk
->sk_family
= PF_INET6
;
181 sk
->sk_protocol
= protocol
;
183 sk
->sk_backlog_rcv
= answer
->prot
->backlog_rcv
;
185 inet_sk(sk
)->pinet6
= np
= inet6_sk_generic(sk
);
189 np
->pmtudisc
= IPV6_PMTUDISC_WANT
;
190 np
->ipv6only
= net
->ipv6
.sysctl
.bindv6only
;
192 /* Init the ipv4 part of the socket since we can have sockets
193 * using v6 API for ipv4.
200 inet
->mc_list
= NULL
;
202 if (ipv4_config
.no_pmtu_disc
)
203 inet
->pmtudisc
= IP_PMTUDISC_DONT
;
205 inet
->pmtudisc
= IP_PMTUDISC_WANT
;
207 * Increment only the relevant sk_prot->socks debug field, this changes
208 * the previous behaviour of incrementing both the equivalent to
209 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
211 * This allows better debug granularity as we'll know exactly how many
212 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
213 * transport protocol socks. -acme
215 sk_refcnt_debug_inc(sk
);
218 /* It assumes that any protocol which allows
219 * the user to assign a number at socket
220 * creation time automatically shares.
222 inet
->sport
= htons(inet
->num
);
223 sk
->sk_prot
->hash(sk
);
225 if (sk
->sk_prot
->init
) {
226 err
= sk
->sk_prot
->init(sk
);
228 sk_common_release(sk
);
240 /* bind for INET6 API */
241 int inet6_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
243 struct sockaddr_in6
*addr
=(struct sockaddr_in6
*)uaddr
;
244 struct sock
*sk
= sock
->sk
;
245 struct inet_sock
*inet
= inet_sk(sk
);
246 struct ipv6_pinfo
*np
= inet6_sk(sk
);
247 struct net
*net
= sock_net(sk
);
253 /* If the socket has its own bind function then use it. */
254 if (sk
->sk_prot
->bind
)
255 return sk
->sk_prot
->bind(sk
, uaddr
, addr_len
);
257 if (addr_len
< SIN6_LEN_RFC2133
)
259 addr_type
= ipv6_addr_type(&addr
->sin6_addr
);
260 if ((addr_type
& IPV6_ADDR_MULTICAST
) && sock
->type
== SOCK_STREAM
)
263 snum
= ntohs(addr
->sin6_port
);
264 if (snum
&& snum
< PROT_SOCK
&& !capable(CAP_NET_BIND_SERVICE
))
269 /* Check these errors (active socket, double bind). */
270 if (sk
->sk_state
!= TCP_CLOSE
|| inet
->num
) {
275 /* Check if the address belongs to the host. */
276 if (addr_type
== IPV6_ADDR_MAPPED
) {
277 v4addr
= addr
->sin6_addr
.s6_addr32
[3];
278 if (inet_addr_type(net
, v4addr
) != RTN_LOCAL
) {
279 err
= -EADDRNOTAVAIL
;
283 if (addr_type
!= IPV6_ADDR_ANY
) {
284 struct net_device
*dev
= NULL
;
286 if (addr_type
& IPV6_ADDR_LINKLOCAL
) {
287 if (addr_len
>= sizeof(struct sockaddr_in6
) &&
288 addr
->sin6_scope_id
) {
289 /* Override any existing binding, if another one
290 * is supplied by user.
292 sk
->sk_bound_dev_if
= addr
->sin6_scope_id
;
295 /* Binding to link-local address requires an interface */
296 if (!sk
->sk_bound_dev_if
) {
300 dev
= dev_get_by_index(net
, sk
->sk_bound_dev_if
);
307 /* ipv4 addr of the socket is invalid. Only the
308 * unspecified and mapped address have a v4 equivalent.
310 v4addr
= LOOPBACK4_IPV6
;
311 if (!(addr_type
& IPV6_ADDR_MULTICAST
)) {
312 if (!ipv6_chk_addr(net
, &addr
->sin6_addr
,
316 err
= -EADDRNOTAVAIL
;
325 inet
->rcv_saddr
= v4addr
;
326 inet
->saddr
= v4addr
;
328 ipv6_addr_copy(&np
->rcv_saddr
, &addr
->sin6_addr
);
330 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
331 ipv6_addr_copy(&np
->saddr
, &addr
->sin6_addr
);
333 /* Make sure we are allowed to bind here. */
334 if (sk
->sk_prot
->get_port(sk
, snum
)) {
335 inet_reset_saddr(sk
);
340 if (addr_type
!= IPV6_ADDR_ANY
)
341 sk
->sk_userlocks
|= SOCK_BINDADDR_LOCK
;
343 sk
->sk_userlocks
|= SOCK_BINDPORT_LOCK
;
344 inet
->sport
= htons(inet
->num
);
352 EXPORT_SYMBOL(inet6_bind
);
354 int inet6_release(struct socket
*sock
)
356 struct sock
*sk
= sock
->sk
;
362 ipv6_sock_mc_close(sk
);
365 ipv6_sock_ac_close(sk
);
367 return inet_release(sock
);
370 EXPORT_SYMBOL(inet6_release
);
372 void inet6_destroy_sock(struct sock
*sk
)
374 struct ipv6_pinfo
*np
= inet6_sk(sk
);
376 struct ipv6_txoptions
*opt
;
378 /* Release rx options */
380 if ((skb
= xchg(&np
->pktoptions
, NULL
)) != NULL
)
383 /* Free flowlabels */
384 fl6_free_socklist(sk
);
386 /* Free tx options */
388 if ((opt
= xchg(&np
->opt
, NULL
)) != NULL
)
389 sock_kfree_s(sk
, opt
, opt
->tot_len
);
392 EXPORT_SYMBOL_GPL(inet6_destroy_sock
);
395 * This does both peername and sockname.
398 int inet6_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
399 int *uaddr_len
, int peer
)
401 struct sockaddr_in6
*sin
=(struct sockaddr_in6
*)uaddr
;
402 struct sock
*sk
= sock
->sk
;
403 struct inet_sock
*inet
= inet_sk(sk
);
404 struct ipv6_pinfo
*np
= inet6_sk(sk
);
406 sin
->sin6_family
= AF_INET6
;
407 sin
->sin6_flowinfo
= 0;
408 sin
->sin6_scope_id
= 0;
412 if (((1 << sk
->sk_state
) & (TCPF_CLOSE
| TCPF_SYN_SENT
)) &&
415 sin
->sin6_port
= inet
->dport
;
416 ipv6_addr_copy(&sin
->sin6_addr
, &np
->daddr
);
418 sin
->sin6_flowinfo
= np
->flow_label
;
420 if (ipv6_addr_any(&np
->rcv_saddr
))
421 ipv6_addr_copy(&sin
->sin6_addr
, &np
->saddr
);
423 ipv6_addr_copy(&sin
->sin6_addr
, &np
->rcv_saddr
);
425 sin
->sin6_port
= inet
->sport
;
427 if (ipv6_addr_type(&sin
->sin6_addr
) & IPV6_ADDR_LINKLOCAL
)
428 sin
->sin6_scope_id
= sk
->sk_bound_dev_if
;
429 *uaddr_len
= sizeof(*sin
);
433 EXPORT_SYMBOL(inet6_getname
);
435 int inet6_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
437 struct sock
*sk
= sock
->sk
;
438 struct net
*net
= sock_net(sk
);
443 return sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
446 return sock_get_timestampns(sk
, (struct timespec __user
*)arg
);
451 return(ipv6_route_ioctl(net
, cmd
, (void __user
*)arg
));
454 return addrconf_add_ifaddr(net
, (void __user
*) arg
);
456 return addrconf_del_ifaddr(net
, (void __user
*) arg
);
458 return addrconf_set_dstaddr(net
, (void __user
*) arg
);
460 if (!sk
->sk_prot
->ioctl
)
462 return sk
->sk_prot
->ioctl(sk
, cmd
, arg
);
468 EXPORT_SYMBOL(inet6_ioctl
);
470 const struct proto_ops inet6_stream_ops
= {
472 .owner
= THIS_MODULE
,
473 .release
= inet6_release
,
475 .connect
= inet_stream_connect
, /* ok */
476 .socketpair
= sock_no_socketpair
, /* a do nothing */
477 .accept
= inet_accept
, /* ok */
478 .getname
= inet6_getname
,
479 .poll
= tcp_poll
, /* ok */
480 .ioctl
= inet6_ioctl
, /* must change */
481 .listen
= inet_listen
, /* ok */
482 .shutdown
= inet_shutdown
, /* ok */
483 .setsockopt
= sock_common_setsockopt
, /* ok */
484 .getsockopt
= sock_common_getsockopt
, /* ok */
485 .sendmsg
= tcp_sendmsg
, /* ok */
486 .recvmsg
= sock_common_recvmsg
, /* ok */
487 .mmap
= sock_no_mmap
,
488 .sendpage
= tcp_sendpage
,
489 .splice_read
= tcp_splice_read
,
491 .compat_setsockopt
= compat_sock_common_setsockopt
,
492 .compat_getsockopt
= compat_sock_common_getsockopt
,
496 const struct proto_ops inet6_dgram_ops
= {
498 .owner
= THIS_MODULE
,
499 .release
= inet6_release
,
501 .connect
= inet_dgram_connect
, /* ok */
502 .socketpair
= sock_no_socketpair
, /* a do nothing */
503 .accept
= sock_no_accept
, /* a do nothing */
504 .getname
= inet6_getname
,
505 .poll
= udp_poll
, /* ok */
506 .ioctl
= inet6_ioctl
, /* must change */
507 .listen
= sock_no_listen
, /* ok */
508 .shutdown
= inet_shutdown
, /* ok */
509 .setsockopt
= sock_common_setsockopt
, /* ok */
510 .getsockopt
= sock_common_getsockopt
, /* ok */
511 .sendmsg
= inet_sendmsg
, /* ok */
512 .recvmsg
= sock_common_recvmsg
, /* ok */
513 .mmap
= sock_no_mmap
,
514 .sendpage
= sock_no_sendpage
,
516 .compat_setsockopt
= compat_sock_common_setsockopt
,
517 .compat_getsockopt
= compat_sock_common_getsockopt
,
521 static struct net_proto_family inet6_family_ops
= {
523 .create
= inet6_create
,
524 .owner
= THIS_MODULE
,
527 int inet6_register_protosw(struct inet_protosw
*p
)
529 struct list_head
*lh
;
530 struct inet_protosw
*answer
;
531 struct list_head
*last_perm
;
532 int protocol
= p
->protocol
;
535 spin_lock_bh(&inetsw6_lock
);
538 if (p
->type
>= SOCK_MAX
)
541 /* If we are trying to override a permanent protocol, bail. */
544 last_perm
= &inetsw6
[p
->type
];
545 list_for_each(lh
, &inetsw6
[p
->type
]) {
546 answer
= list_entry(lh
, struct inet_protosw
, list
);
548 /* Check only the non-wild match. */
549 if (INET_PROTOSW_PERMANENT
& answer
->flags
) {
550 if (protocol
== answer
->protocol
)
560 /* Add the new entry after the last permanent entry if any, so that
561 * the new entry does not override a permanent entry when matched with
562 * a wild-card protocol. But it is allowed to override any existing
563 * non-permanent entry. This means that when we remove this entry, the
564 * system automatically returns to the old behavior.
566 list_add_rcu(&p
->list
, last_perm
);
569 spin_unlock_bh(&inetsw6_lock
);
573 printk(KERN_ERR
"Attempt to override permanent protocol %d.\n",
579 "Ignoring attempt to register invalid socket type %d.\n",
584 EXPORT_SYMBOL(inet6_register_protosw
);
587 inet6_unregister_protosw(struct inet_protosw
*p
)
589 if (INET_PROTOSW_PERMANENT
& p
->flags
) {
591 "Attempt to unregister permanent protocol %d.\n",
594 spin_lock_bh(&inetsw6_lock
);
595 list_del_rcu(&p
->list
);
596 spin_unlock_bh(&inetsw6_lock
);
602 EXPORT_SYMBOL(inet6_unregister_protosw
);
604 int inet6_sk_rebuild_header(struct sock
*sk
)
607 struct dst_entry
*dst
;
608 struct ipv6_pinfo
*np
= inet6_sk(sk
);
610 dst
= __sk_dst_check(sk
, np
->dst_cookie
);
613 struct inet_sock
*inet
= inet_sk(sk
);
614 struct in6_addr
*final_p
= NULL
, final
;
617 memset(&fl
, 0, sizeof(fl
));
618 fl
.proto
= sk
->sk_protocol
;
619 ipv6_addr_copy(&fl
.fl6_dst
, &np
->daddr
);
620 ipv6_addr_copy(&fl
.fl6_src
, &np
->saddr
);
621 fl
.fl6_flowlabel
= np
->flow_label
;
622 fl
.oif
= sk
->sk_bound_dev_if
;
623 fl
.fl_ip_dport
= inet
->dport
;
624 fl
.fl_ip_sport
= inet
->sport
;
625 security_sk_classify_flow(sk
, &fl
);
627 if (np
->opt
&& np
->opt
->srcrt
) {
628 struct rt0_hdr
*rt0
= (struct rt0_hdr
*) np
->opt
->srcrt
;
629 ipv6_addr_copy(&final
, &fl
.fl6_dst
);
630 ipv6_addr_copy(&fl
.fl6_dst
, rt0
->addr
);
634 err
= ip6_dst_lookup(sk
, &dst
, &fl
);
636 sk
->sk_route_caps
= 0;
640 ipv6_addr_copy(&fl
.fl6_dst
, final_p
);
642 if ((err
= xfrm_lookup(&dst
, &fl
, sk
, 0)) < 0) {
643 sk
->sk_err_soft
= -err
;
647 __ip6_dst_store(sk
, dst
, NULL
, NULL
);
653 EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header
);
655 int ipv6_opt_accepted(struct sock
*sk
, struct sk_buff
*skb
)
657 struct ipv6_pinfo
*np
= inet6_sk(sk
);
658 struct inet6_skb_parm
*opt
= IP6CB(skb
);
661 if ((opt
->hop
&& (np
->rxopt
.bits
.hopopts
||
662 np
->rxopt
.bits
.ohopopts
)) ||
663 ((IPV6_FLOWINFO_MASK
&
664 *(__be32
*)skb_network_header(skb
)) &&
665 np
->rxopt
.bits
.rxflow
) ||
666 (opt
->srcrt
&& (np
->rxopt
.bits
.srcrt
||
667 np
->rxopt
.bits
.osrcrt
)) ||
668 ((opt
->dst1
|| opt
->dst0
) &&
669 (np
->rxopt
.bits
.dstopts
|| np
->rxopt
.bits
.odstopts
)))
675 EXPORT_SYMBOL_GPL(ipv6_opt_accepted
);
677 static struct inet6_protocol
*ipv6_gso_pull_exthdrs(struct sk_buff
*skb
,
680 struct inet6_protocol
*ops
= NULL
;
683 struct ipv6_opt_hdr
*opth
;
686 if (proto
!= NEXTHDR_HOP
) {
687 ops
= rcu_dereference(inet6_protos
[proto
]);
692 if (!(ops
->flags
& INET6_PROTO_GSO_EXTHDR
))
696 if (unlikely(!pskb_may_pull(skb
, 8)))
699 opth
= (void *)skb
->data
;
700 len
= ipv6_optlen(opth
);
702 if (unlikely(!pskb_may_pull(skb
, len
)))
705 proto
= opth
->nexthdr
;
706 __skb_pull(skb
, len
);
712 static int ipv6_gso_send_check(struct sk_buff
*skb
)
714 struct ipv6hdr
*ipv6h
;
715 struct inet6_protocol
*ops
;
718 if (unlikely(!pskb_may_pull(skb
, sizeof(*ipv6h
))))
721 ipv6h
= ipv6_hdr(skb
);
722 __skb_pull(skb
, sizeof(*ipv6h
));
723 err
= -EPROTONOSUPPORT
;
726 ops
= ipv6_gso_pull_exthdrs(skb
, ipv6h
->nexthdr
);
727 if (likely(ops
&& ops
->gso_send_check
)) {
728 skb_reset_transport_header(skb
);
729 err
= ops
->gso_send_check(skb
);
737 static struct sk_buff
*ipv6_gso_segment(struct sk_buff
*skb
, int features
)
739 struct sk_buff
*segs
= ERR_PTR(-EINVAL
);
740 struct ipv6hdr
*ipv6h
;
741 struct inet6_protocol
*ops
;
743 if (!(features
& NETIF_F_V6_CSUM
))
744 features
&= ~NETIF_F_SG
;
746 if (unlikely(skb_shinfo(skb
)->gso_type
&
754 if (unlikely(!pskb_may_pull(skb
, sizeof(*ipv6h
))))
757 ipv6h
= ipv6_hdr(skb
);
758 __skb_pull(skb
, sizeof(*ipv6h
));
759 segs
= ERR_PTR(-EPROTONOSUPPORT
);
762 ops
= ipv6_gso_pull_exthdrs(skb
, ipv6h
->nexthdr
);
763 if (likely(ops
&& ops
->gso_segment
)) {
764 skb_reset_transport_header(skb
);
765 segs
= ops
->gso_segment(skb
, features
);
769 if (unlikely(IS_ERR(segs
)))
772 for (skb
= segs
; skb
; skb
= skb
->next
) {
773 ipv6h
= ipv6_hdr(skb
);
774 ipv6h
->payload_len
= htons(skb
->len
- skb
->mac_len
-
782 static struct packet_type ipv6_packet_type
= {
783 .type
= __constant_htons(ETH_P_IPV6
),
785 .gso_send_check
= ipv6_gso_send_check
,
786 .gso_segment
= ipv6_gso_segment
,
789 static int __init
ipv6_packet_init(void)
791 dev_add_pack(&ipv6_packet_type
);
795 static void ipv6_packet_cleanup(void)
797 dev_remove_pack(&ipv6_packet_type
);
800 static int __init
init_ipv6_mibs(void)
802 if (snmp_mib_init((void **)ipv6_statistics
,
803 sizeof(struct ipstats_mib
)) < 0)
805 if (snmp_mib_init((void **)icmpv6_statistics
,
806 sizeof(struct icmpv6_mib
)) < 0)
808 if (snmp_mib_init((void **)icmpv6msg_statistics
,
809 sizeof(struct icmpv6msg_mib
)) < 0)
810 goto err_icmpmsg_mib
;
811 if (snmp_mib_init((void **)udp_stats_in6
, sizeof (struct udp_mib
)) < 0)
813 if (snmp_mib_init((void **)udplite_stats_in6
,
814 sizeof (struct udp_mib
)) < 0)
815 goto err_udplite_mib
;
819 snmp_mib_free((void **)udp_stats_in6
);
821 snmp_mib_free((void **)icmpv6msg_statistics
);
823 snmp_mib_free((void **)icmpv6_statistics
);
825 snmp_mib_free((void **)ipv6_statistics
);
831 static void cleanup_ipv6_mibs(void)
833 snmp_mib_free((void **)ipv6_statistics
);
834 snmp_mib_free((void **)icmpv6_statistics
);
835 snmp_mib_free((void **)icmpv6msg_statistics
);
836 snmp_mib_free((void **)udp_stats_in6
);
837 snmp_mib_free((void **)udplite_stats_in6
);
840 static int inet6_net_init(struct net
*net
)
844 net
->ipv6
.sysctl
.bindv6only
= 0;
845 net
->ipv6
.sysctl
.flush_delay
= 0;
846 net
->ipv6
.sysctl
.ip6_rt_max_size
= 4096;
847 net
->ipv6
.sysctl
.ip6_rt_gc_min_interval
= HZ
/ 2;
848 net
->ipv6
.sysctl
.ip6_rt_gc_timeout
= 60*HZ
;
849 net
->ipv6
.sysctl
.ip6_rt_gc_interval
= 30*HZ
;
850 net
->ipv6
.sysctl
.ip6_rt_gc_elasticity
= 9;
851 net
->ipv6
.sysctl
.ip6_rt_mtu_expires
= 10*60*HZ
;
852 net
->ipv6
.sysctl
.ip6_rt_min_advmss
= IPV6_MIN_MTU
- 20 - 40;
853 net
->ipv6
.sysctl
.icmpv6_time
= 1*HZ
;
855 #ifdef CONFIG_PROC_FS
856 err
= udp6_proc_init(net
);
859 err
= tcp6_proc_init(net
);
862 err
= ac6_proc_init(net
);
869 #ifdef CONFIG_PROC_FS
878 static void inet6_net_exit(struct net
*net
)
880 #ifdef CONFIG_PROC_FS
887 static struct pernet_operations inet6_net_ops
= {
888 .init
= inet6_net_init
,
889 .exit
= inet6_net_exit
,
892 static int __init
inet6_init(void)
894 struct sk_buff
*dummy_skb
;
898 BUILD_BUG_ON(sizeof(struct inet6_skb_parm
) > sizeof(dummy_skb
->cb
));
900 err
= proto_register(&tcpv6_prot
, 1);
904 err
= proto_register(&udpv6_prot
, 1);
906 goto out_unregister_tcp_proto
;
908 err
= proto_register(&udplitev6_prot
, 1);
910 goto out_unregister_udp_proto
;
912 err
= proto_register(&rawv6_prot
, 1);
914 goto out_unregister_udplite_proto
;
917 /* Register the socket-side information for inet6_create. */
918 for(r
= &inetsw6
[0]; r
< &inetsw6
[SOCK_MAX
]; ++r
)
921 /* We MUST register RAW sockets before we create the ICMP6,
922 * IGMP6, or NDISC control sockets.
926 goto out_unregister_raw_proto
;
928 /* Register the family here so that the init calls below will
929 * be able to create sockets. (?? is this dangerous ??)
931 err
= sock_register(&inet6_family_ops
);
933 goto out_sock_register_fail
;
935 /* Initialise ipv6 mibs */
936 err
= init_ipv6_mibs();
938 goto out_unregister_sock
;
941 * ipngwg API draft makes clear that the correct semantics
942 * for TCP and UDP is to consider one TCP and UDP instance
943 * in a host availiable by both INET and INET6 APIs and
944 * able to communicate via both network protocols.
947 err
= register_pernet_subsys(&inet6_net_ops
);
949 goto register_pernet_fail
;
962 err
= ipv6_netfilter_init();
965 /* Create /proc/foo6 entries. */
966 #ifdef CONFIG_PROC_FS
968 if (raw6_proc_init())
970 if (udplite6_proc_init())
971 goto proc_udplite6_fail
;
972 if (ipv6_misc_proc_init())
973 goto proc_misc6_fail
;
977 err
= ip6_route_init();
980 err
= ip6_flowlabel_init();
982 goto ip6_flowlabel_fail
;
983 err
= addrconf_init();
987 /* Init v6 extension headers. */
988 err
= ipv6_exthdrs_init();
990 goto ipv6_exthdrs_fail
;
992 err
= ipv6_frag_init();
996 /* Init v6 transport protocols. */
1001 err
= udplitev6_init();
1003 goto udplitev6_fail
;
1009 err
= ipv6_packet_init();
1011 goto ipv6_packet_fail
;
1013 #ifdef CONFIG_SYSCTL
1014 err
= ipv6_sysctl_register();
1021 #ifdef CONFIG_SYSCTL
1023 ipv6_packet_cleanup();
1034 ipv6_exthdrs_exit();
1038 ip6_flowlabel_cleanup();
1040 ip6_route_cleanup();
1042 #ifdef CONFIG_PROC_FS
1045 ipv6_misc_proc_exit();
1047 udplite6_proc_exit();
1052 ipv6_netfilter_fini();
1062 unregister_pernet_subsys(&inet6_net_ops
);
1063 register_pernet_fail
:
1064 cleanup_ipv6_mibs();
1065 out_unregister_sock
:
1066 sock_unregister(PF_INET6
);
1067 rtnl_unregister_all(PF_INET6
);
1068 out_sock_register_fail
:
1070 out_unregister_raw_proto
:
1071 proto_unregister(&rawv6_prot
);
1072 out_unregister_udplite_proto
:
1073 proto_unregister(&udplitev6_prot
);
1074 out_unregister_udp_proto
:
1075 proto_unregister(&udpv6_prot
);
1076 out_unregister_tcp_proto
:
1077 proto_unregister(&tcpv6_prot
);
1080 module_init(inet6_init
);
1082 static void __exit
inet6_exit(void)
1084 /* First of all disallow new sockets creation. */
1085 sock_unregister(PF_INET6
);
1086 /* Disallow any further netlink messages */
1087 rtnl_unregister_all(PF_INET6
);
1089 #ifdef CONFIG_SYSCTL
1090 ipv6_sysctl_unregister();
1096 /* Cleanup code parts. */
1097 ipv6_packet_cleanup();
1099 ipv6_exthdrs_exit();
1101 ip6_flowlabel_cleanup();
1102 ip6_route_cleanup();
1103 #ifdef CONFIG_PROC_FS
1105 /* Cleanup code parts. */
1107 ipv6_misc_proc_exit();
1108 udplite6_proc_exit();
1111 ipv6_netfilter_fini();
1118 unregister_pernet_subsys(&inet6_net_ops
);
1119 cleanup_ipv6_mibs();
1120 proto_unregister(&rawv6_prot
);
1121 proto_unregister(&udplitev6_prot
);
1122 proto_unregister(&udpv6_prot
);
1123 proto_unregister(&tcpv6_prot
);
1125 module_exit(inet6_exit
);
1127 MODULE_ALIAS_NETPROTO(PF_INET6
);