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 #ifdef CONFIG_IPV6_MROUTE
63 #include <linux/mroute6.h>
66 MODULE_AUTHOR("Cast of dozens");
67 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
68 MODULE_LICENSE("GPL");
70 /* The inetsw6 table contains everything that inet6_create needs to
73 static struct list_head inetsw6
[SOCK_MAX
];
74 static DEFINE_SPINLOCK(inetsw6_lock
);
76 static __inline__
struct ipv6_pinfo
*inet6_sk_generic(struct sock
*sk
)
78 const int offset
= sk
->sk_prot
->obj_size
- sizeof(struct ipv6_pinfo
);
80 return (struct ipv6_pinfo
*)(((u8
*)sk
) + offset
);
83 static int inet6_create(struct net
*net
, struct socket
*sock
, int protocol
)
85 struct inet_sock
*inet
;
86 struct ipv6_pinfo
*np
;
89 struct inet_protosw
*answer
;
90 struct proto
*answer_prot
;
91 unsigned char answer_flags
;
93 int try_loading_module
= 0;
96 if (sock
->type
!= SOCK_RAW
&&
97 sock
->type
!= SOCK_DGRAM
&&
101 /* Look for the requested type/protocol pair. */
104 err
= -ESOCKTNOSUPPORT
;
106 list_for_each_rcu(p
, &inetsw6
[sock
->type
]) {
107 answer
= list_entry(p
, struct inet_protosw
, list
);
109 /* Check the non-wild match. */
110 if (protocol
== answer
->protocol
) {
111 if (protocol
!= IPPROTO_IP
)
114 /* Check for the two wild cases. */
115 if (IPPROTO_IP
== protocol
) {
116 protocol
= answer
->protocol
;
119 if (IPPROTO_IP
== answer
->protocol
)
122 err
= -EPROTONOSUPPORT
;
127 if (try_loading_module
< 2) {
130 * Be more specific, e.g. net-pf-10-proto-132-type-1
131 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
133 if (++try_loading_module
== 1)
134 request_module("net-pf-%d-proto-%d-type-%d",
135 PF_INET6
, protocol
, sock
->type
);
137 * Fall back to generic, e.g. net-pf-10-proto-132
138 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
141 request_module("net-pf-%d-proto-%d",
143 goto lookup_protocol
;
149 if (answer
->capability
> 0 && !capable(answer
->capability
))
152 sock
->ops
= answer
->ops
;
153 answer_prot
= answer
->prot
;
154 answer_no_check
= answer
->no_check
;
155 answer_flags
= answer
->flags
;
158 BUG_TRAP(answer_prot
->slab
!= NULL
);
161 sk
= sk_alloc(net
, PF_INET6
, GFP_KERNEL
, answer_prot
);
165 sock_init_data(sock
, sk
);
168 sk
->sk_no_check
= answer_no_check
;
169 if (INET_PROTOSW_REUSE
& answer_flags
)
173 inet
->is_icsk
= (INET_PROTOSW_ICSK
& answer_flags
) != 0;
175 if (SOCK_RAW
== sock
->type
) {
176 inet
->num
= protocol
;
177 if (IPPROTO_RAW
== protocol
)
181 sk
->sk_destruct
= inet_sock_destruct
;
182 sk
->sk_family
= PF_INET6
;
183 sk
->sk_protocol
= protocol
;
185 sk
->sk_backlog_rcv
= answer
->prot
->backlog_rcv
;
187 inet_sk(sk
)->pinet6
= np
= inet6_sk_generic(sk
);
191 np
->pmtudisc
= IPV6_PMTUDISC_WANT
;
192 np
->ipv6only
= net
->ipv6
.sysctl
.bindv6only
;
194 /* Init the ipv4 part of the socket since we can have sockets
195 * using v6 API for ipv4.
202 inet
->mc_list
= NULL
;
204 if (ipv4_config
.no_pmtu_disc
)
205 inet
->pmtudisc
= IP_PMTUDISC_DONT
;
207 inet
->pmtudisc
= IP_PMTUDISC_WANT
;
209 * Increment only the relevant sk_prot->socks debug field, this changes
210 * the previous behaviour of incrementing both the equivalent to
211 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
213 * This allows better debug granularity as we'll know exactly how many
214 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
215 * transport protocol socks. -acme
217 sk_refcnt_debug_inc(sk
);
220 /* It assumes that any protocol which allows
221 * the user to assign a number at socket
222 * creation time automatically shares.
224 inet
->sport
= htons(inet
->num
);
225 sk
->sk_prot
->hash(sk
);
227 if (sk
->sk_prot
->init
) {
228 err
= sk
->sk_prot
->init(sk
);
230 sk_common_release(sk
);
242 /* bind for INET6 API */
243 int inet6_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
245 struct sockaddr_in6
*addr
=(struct sockaddr_in6
*)uaddr
;
246 struct sock
*sk
= sock
->sk
;
247 struct inet_sock
*inet
= inet_sk(sk
);
248 struct ipv6_pinfo
*np
= inet6_sk(sk
);
249 struct net
*net
= sock_net(sk
);
255 /* If the socket has its own bind function then use it. */
256 if (sk
->sk_prot
->bind
)
257 return sk
->sk_prot
->bind(sk
, uaddr
, addr_len
);
259 if (addr_len
< SIN6_LEN_RFC2133
)
261 addr_type
= ipv6_addr_type(&addr
->sin6_addr
);
262 if ((addr_type
& IPV6_ADDR_MULTICAST
) && sock
->type
== SOCK_STREAM
)
265 snum
= ntohs(addr
->sin6_port
);
266 if (snum
&& snum
< PROT_SOCK
&& !capable(CAP_NET_BIND_SERVICE
))
271 /* Check these errors (active socket, double bind). */
272 if (sk
->sk_state
!= TCP_CLOSE
|| inet
->num
) {
277 /* Check if the address belongs to the host. */
278 if (addr_type
== IPV6_ADDR_MAPPED
) {
279 v4addr
= addr
->sin6_addr
.s6_addr32
[3];
280 if (inet_addr_type(net
, v4addr
) != RTN_LOCAL
) {
281 err
= -EADDRNOTAVAIL
;
285 if (addr_type
!= IPV6_ADDR_ANY
) {
286 struct net_device
*dev
= NULL
;
288 if (addr_type
& IPV6_ADDR_LINKLOCAL
) {
289 if (addr_len
>= sizeof(struct sockaddr_in6
) &&
290 addr
->sin6_scope_id
) {
291 /* Override any existing binding, if another one
292 * is supplied by user.
294 sk
->sk_bound_dev_if
= addr
->sin6_scope_id
;
297 /* Binding to link-local address requires an interface */
298 if (!sk
->sk_bound_dev_if
) {
302 dev
= dev_get_by_index(net
, sk
->sk_bound_dev_if
);
309 /* ipv4 addr of the socket is invalid. Only the
310 * unspecified and mapped address have a v4 equivalent.
312 v4addr
= LOOPBACK4_IPV6
;
313 if (!(addr_type
& IPV6_ADDR_MULTICAST
)) {
314 if (!ipv6_chk_addr(net
, &addr
->sin6_addr
,
318 err
= -EADDRNOTAVAIL
;
327 inet
->rcv_saddr
= v4addr
;
328 inet
->saddr
= v4addr
;
330 ipv6_addr_copy(&np
->rcv_saddr
, &addr
->sin6_addr
);
332 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
333 ipv6_addr_copy(&np
->saddr
, &addr
->sin6_addr
);
335 /* Make sure we are allowed to bind here. */
336 if (sk
->sk_prot
->get_port(sk
, snum
)) {
337 inet_reset_saddr(sk
);
342 if (addr_type
!= IPV6_ADDR_ANY
)
343 sk
->sk_userlocks
|= SOCK_BINDADDR_LOCK
;
345 sk
->sk_userlocks
|= SOCK_BINDPORT_LOCK
;
346 inet
->sport
= htons(inet
->num
);
354 EXPORT_SYMBOL(inet6_bind
);
356 int inet6_release(struct socket
*sock
)
358 struct sock
*sk
= sock
->sk
;
364 ipv6_sock_mc_close(sk
);
367 ipv6_sock_ac_close(sk
);
369 return inet_release(sock
);
372 EXPORT_SYMBOL(inet6_release
);
374 int inet6_destroy_sock(struct sock
*sk
)
376 struct ipv6_pinfo
*np
= inet6_sk(sk
);
378 struct ipv6_txoptions
*opt
;
380 /* Release rx options */
382 if ((skb
= xchg(&np
->pktoptions
, NULL
)) != NULL
)
385 /* Free flowlabels */
386 fl6_free_socklist(sk
);
388 /* Free tx options */
390 if ((opt
= xchg(&np
->opt
, NULL
)) != NULL
)
391 sock_kfree_s(sk
, opt
, opt
->tot_len
);
396 EXPORT_SYMBOL_GPL(inet6_destroy_sock
);
399 * This does both peername and sockname.
402 int inet6_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
403 int *uaddr_len
, int peer
)
405 struct sockaddr_in6
*sin
=(struct sockaddr_in6
*)uaddr
;
406 struct sock
*sk
= sock
->sk
;
407 struct inet_sock
*inet
= inet_sk(sk
);
408 struct ipv6_pinfo
*np
= inet6_sk(sk
);
410 sin
->sin6_family
= AF_INET6
;
411 sin
->sin6_flowinfo
= 0;
412 sin
->sin6_scope_id
= 0;
416 if (((1 << sk
->sk_state
) & (TCPF_CLOSE
| TCPF_SYN_SENT
)) &&
419 sin
->sin6_port
= inet
->dport
;
420 ipv6_addr_copy(&sin
->sin6_addr
, &np
->daddr
);
422 sin
->sin6_flowinfo
= np
->flow_label
;
424 if (ipv6_addr_any(&np
->rcv_saddr
))
425 ipv6_addr_copy(&sin
->sin6_addr
, &np
->saddr
);
427 ipv6_addr_copy(&sin
->sin6_addr
, &np
->rcv_saddr
);
429 sin
->sin6_port
= inet
->sport
;
431 if (ipv6_addr_type(&sin
->sin6_addr
) & IPV6_ADDR_LINKLOCAL
)
432 sin
->sin6_scope_id
= sk
->sk_bound_dev_if
;
433 *uaddr_len
= sizeof(*sin
);
437 EXPORT_SYMBOL(inet6_getname
);
439 int inet6_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
441 struct sock
*sk
= sock
->sk
;
442 struct net
*net
= sock_net(sk
);
447 return sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
450 return sock_get_timestampns(sk
, (struct timespec __user
*)arg
);
455 return(ipv6_route_ioctl(net
, cmd
, (void __user
*)arg
));
458 return addrconf_add_ifaddr(net
, (void __user
*) arg
);
460 return addrconf_del_ifaddr(net
, (void __user
*) arg
);
462 return addrconf_set_dstaddr(net
, (void __user
*) arg
);
464 if (!sk
->sk_prot
->ioctl
)
466 return sk
->sk_prot
->ioctl(sk
, cmd
, arg
);
472 EXPORT_SYMBOL(inet6_ioctl
);
474 const struct proto_ops inet6_stream_ops
= {
476 .owner
= THIS_MODULE
,
477 .release
= inet6_release
,
479 .connect
= inet_stream_connect
, /* ok */
480 .socketpair
= sock_no_socketpair
, /* a do nothing */
481 .accept
= inet_accept
, /* ok */
482 .getname
= inet6_getname
,
483 .poll
= tcp_poll
, /* ok */
484 .ioctl
= inet6_ioctl
, /* must change */
485 .listen
= inet_listen
, /* ok */
486 .shutdown
= inet_shutdown
, /* ok */
487 .setsockopt
= sock_common_setsockopt
, /* ok */
488 .getsockopt
= sock_common_getsockopt
, /* ok */
489 .sendmsg
= tcp_sendmsg
, /* ok */
490 .recvmsg
= sock_common_recvmsg
, /* ok */
491 .mmap
= sock_no_mmap
,
492 .sendpage
= tcp_sendpage
,
493 .splice_read
= tcp_splice_read
,
495 .compat_setsockopt
= compat_sock_common_setsockopt
,
496 .compat_getsockopt
= compat_sock_common_getsockopt
,
500 const struct proto_ops inet6_dgram_ops
= {
502 .owner
= THIS_MODULE
,
503 .release
= inet6_release
,
505 .connect
= inet_dgram_connect
, /* ok */
506 .socketpair
= sock_no_socketpair
, /* a do nothing */
507 .accept
= sock_no_accept
, /* a do nothing */
508 .getname
= inet6_getname
,
509 .poll
= udp_poll
, /* ok */
510 .ioctl
= inet6_ioctl
, /* must change */
511 .listen
= sock_no_listen
, /* ok */
512 .shutdown
= inet_shutdown
, /* ok */
513 .setsockopt
= sock_common_setsockopt
, /* ok */
514 .getsockopt
= sock_common_getsockopt
, /* ok */
515 .sendmsg
= inet_sendmsg
, /* ok */
516 .recvmsg
= sock_common_recvmsg
, /* ok */
517 .mmap
= sock_no_mmap
,
518 .sendpage
= sock_no_sendpage
,
520 .compat_setsockopt
= compat_sock_common_setsockopt
,
521 .compat_getsockopt
= compat_sock_common_getsockopt
,
525 static struct net_proto_family inet6_family_ops
= {
527 .create
= inet6_create
,
528 .owner
= THIS_MODULE
,
531 int inet6_register_protosw(struct inet_protosw
*p
)
533 struct list_head
*lh
;
534 struct inet_protosw
*answer
;
535 struct list_head
*last_perm
;
536 int protocol
= p
->protocol
;
539 spin_lock_bh(&inetsw6_lock
);
542 if (p
->type
>= SOCK_MAX
)
545 /* If we are trying to override a permanent protocol, bail. */
548 last_perm
= &inetsw6
[p
->type
];
549 list_for_each(lh
, &inetsw6
[p
->type
]) {
550 answer
= list_entry(lh
, struct inet_protosw
, list
);
552 /* Check only the non-wild match. */
553 if (INET_PROTOSW_PERMANENT
& answer
->flags
) {
554 if (protocol
== answer
->protocol
)
564 /* Add the new entry after the last permanent entry if any, so that
565 * the new entry does not override a permanent entry when matched with
566 * a wild-card protocol. But it is allowed to override any existing
567 * non-permanent entry. This means that when we remove this entry, the
568 * system automatically returns to the old behavior.
570 list_add_rcu(&p
->list
, last_perm
);
573 spin_unlock_bh(&inetsw6_lock
);
577 printk(KERN_ERR
"Attempt to override permanent protocol %d.\n",
583 "Ignoring attempt to register invalid socket type %d.\n",
588 EXPORT_SYMBOL(inet6_register_protosw
);
591 inet6_unregister_protosw(struct inet_protosw
*p
)
593 if (INET_PROTOSW_PERMANENT
& p
->flags
) {
595 "Attempt to unregister permanent protocol %d.\n",
598 spin_lock_bh(&inetsw6_lock
);
599 list_del_rcu(&p
->list
);
600 spin_unlock_bh(&inetsw6_lock
);
606 EXPORT_SYMBOL(inet6_unregister_protosw
);
608 int inet6_sk_rebuild_header(struct sock
*sk
)
611 struct dst_entry
*dst
;
612 struct ipv6_pinfo
*np
= inet6_sk(sk
);
614 dst
= __sk_dst_check(sk
, np
->dst_cookie
);
617 struct inet_sock
*inet
= inet_sk(sk
);
618 struct in6_addr
*final_p
= NULL
, final
;
621 memset(&fl
, 0, sizeof(fl
));
622 fl
.proto
= sk
->sk_protocol
;
623 ipv6_addr_copy(&fl
.fl6_dst
, &np
->daddr
);
624 ipv6_addr_copy(&fl
.fl6_src
, &np
->saddr
);
625 fl
.fl6_flowlabel
= np
->flow_label
;
626 fl
.oif
= sk
->sk_bound_dev_if
;
627 fl
.fl_ip_dport
= inet
->dport
;
628 fl
.fl_ip_sport
= inet
->sport
;
629 security_sk_classify_flow(sk
, &fl
);
631 if (np
->opt
&& np
->opt
->srcrt
) {
632 struct rt0_hdr
*rt0
= (struct rt0_hdr
*) np
->opt
->srcrt
;
633 ipv6_addr_copy(&final
, &fl
.fl6_dst
);
634 ipv6_addr_copy(&fl
.fl6_dst
, rt0
->addr
);
638 err
= ip6_dst_lookup(sk
, &dst
, &fl
);
640 sk
->sk_route_caps
= 0;
644 ipv6_addr_copy(&fl
.fl6_dst
, final_p
);
646 if ((err
= xfrm_lookup(&dst
, &fl
, sk
, 0)) < 0) {
647 sk
->sk_err_soft
= -err
;
651 __ip6_dst_store(sk
, dst
, NULL
, NULL
);
657 EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header
);
659 int ipv6_opt_accepted(struct sock
*sk
, struct sk_buff
*skb
)
661 struct ipv6_pinfo
*np
= inet6_sk(sk
);
662 struct inet6_skb_parm
*opt
= IP6CB(skb
);
665 if ((opt
->hop
&& (np
->rxopt
.bits
.hopopts
||
666 np
->rxopt
.bits
.ohopopts
)) ||
667 ((IPV6_FLOWINFO_MASK
&
668 *(__be32
*)skb_network_header(skb
)) &&
669 np
->rxopt
.bits
.rxflow
) ||
670 (opt
->srcrt
&& (np
->rxopt
.bits
.srcrt
||
671 np
->rxopt
.bits
.osrcrt
)) ||
672 ((opt
->dst1
|| opt
->dst0
) &&
673 (np
->rxopt
.bits
.dstopts
|| np
->rxopt
.bits
.odstopts
)))
679 EXPORT_SYMBOL_GPL(ipv6_opt_accepted
);
681 static struct inet6_protocol
*ipv6_gso_pull_exthdrs(struct sk_buff
*skb
,
684 struct inet6_protocol
*ops
= NULL
;
687 struct ipv6_opt_hdr
*opth
;
690 if (proto
!= NEXTHDR_HOP
) {
691 ops
= rcu_dereference(inet6_protos
[proto
]);
696 if (!(ops
->flags
& INET6_PROTO_GSO_EXTHDR
))
700 if (unlikely(!pskb_may_pull(skb
, 8)))
703 opth
= (void *)skb
->data
;
704 len
= ipv6_optlen(opth
);
706 if (unlikely(!pskb_may_pull(skb
, len
)))
709 proto
= opth
->nexthdr
;
710 __skb_pull(skb
, len
);
716 static int ipv6_gso_send_check(struct sk_buff
*skb
)
718 struct ipv6hdr
*ipv6h
;
719 struct inet6_protocol
*ops
;
722 if (unlikely(!pskb_may_pull(skb
, sizeof(*ipv6h
))))
725 ipv6h
= ipv6_hdr(skb
);
726 __skb_pull(skb
, sizeof(*ipv6h
));
727 err
= -EPROTONOSUPPORT
;
730 ops
= ipv6_gso_pull_exthdrs(skb
, ipv6h
->nexthdr
);
731 if (likely(ops
&& ops
->gso_send_check
)) {
732 skb_reset_transport_header(skb
);
733 err
= ops
->gso_send_check(skb
);
741 static struct sk_buff
*ipv6_gso_segment(struct sk_buff
*skb
, int features
)
743 struct sk_buff
*segs
= ERR_PTR(-EINVAL
);
744 struct ipv6hdr
*ipv6h
;
745 struct inet6_protocol
*ops
;
747 if (!(features
& NETIF_F_V6_CSUM
))
748 features
&= ~NETIF_F_SG
;
750 if (unlikely(skb_shinfo(skb
)->gso_type
&
758 if (unlikely(!pskb_may_pull(skb
, sizeof(*ipv6h
))))
761 ipv6h
= ipv6_hdr(skb
);
762 __skb_pull(skb
, sizeof(*ipv6h
));
763 segs
= ERR_PTR(-EPROTONOSUPPORT
);
766 ops
= ipv6_gso_pull_exthdrs(skb
, ipv6h
->nexthdr
);
767 if (likely(ops
&& ops
->gso_segment
)) {
768 skb_reset_transport_header(skb
);
769 segs
= ops
->gso_segment(skb
, features
);
773 if (unlikely(IS_ERR(segs
)))
776 for (skb
= segs
; skb
; skb
= skb
->next
) {
777 ipv6h
= ipv6_hdr(skb
);
778 ipv6h
->payload_len
= htons(skb
->len
- skb
->mac_len
-
786 static struct packet_type ipv6_packet_type
= {
787 .type
= __constant_htons(ETH_P_IPV6
),
789 .gso_send_check
= ipv6_gso_send_check
,
790 .gso_segment
= ipv6_gso_segment
,
793 static int __init
ipv6_packet_init(void)
795 dev_add_pack(&ipv6_packet_type
);
799 static void ipv6_packet_cleanup(void)
801 dev_remove_pack(&ipv6_packet_type
);
804 static int __init
init_ipv6_mibs(void)
806 if (snmp_mib_init((void **)ipv6_statistics
,
807 sizeof(struct ipstats_mib
)) < 0)
809 if (snmp_mib_init((void **)icmpv6_statistics
,
810 sizeof(struct icmpv6_mib
)) < 0)
812 if (snmp_mib_init((void **)icmpv6msg_statistics
,
813 sizeof(struct icmpv6msg_mib
)) < 0)
814 goto err_icmpmsg_mib
;
815 if (snmp_mib_init((void **)udp_stats_in6
, sizeof (struct udp_mib
)) < 0)
817 if (snmp_mib_init((void **)udplite_stats_in6
,
818 sizeof (struct udp_mib
)) < 0)
819 goto err_udplite_mib
;
823 snmp_mib_free((void **)udp_stats_in6
);
825 snmp_mib_free((void **)icmpv6msg_statistics
);
827 snmp_mib_free((void **)icmpv6_statistics
);
829 snmp_mib_free((void **)ipv6_statistics
);
835 static void cleanup_ipv6_mibs(void)
837 snmp_mib_free((void **)ipv6_statistics
);
838 snmp_mib_free((void **)icmpv6_statistics
);
839 snmp_mib_free((void **)icmpv6msg_statistics
);
840 snmp_mib_free((void **)udp_stats_in6
);
841 snmp_mib_free((void **)udplite_stats_in6
);
844 static int inet6_net_init(struct net
*net
)
848 net
->ipv6
.sysctl
.bindv6only
= 0;
849 net
->ipv6
.sysctl
.flush_delay
= 0;
850 net
->ipv6
.sysctl
.ip6_rt_max_size
= 4096;
851 net
->ipv6
.sysctl
.ip6_rt_gc_min_interval
= HZ
/ 2;
852 net
->ipv6
.sysctl
.ip6_rt_gc_timeout
= 60*HZ
;
853 net
->ipv6
.sysctl
.ip6_rt_gc_interval
= 30*HZ
;
854 net
->ipv6
.sysctl
.ip6_rt_gc_elasticity
= 9;
855 net
->ipv6
.sysctl
.ip6_rt_mtu_expires
= 10*60*HZ
;
856 net
->ipv6
.sysctl
.ip6_rt_min_advmss
= IPV6_MIN_MTU
- 20 - 40;
857 net
->ipv6
.sysctl
.icmpv6_time
= 1*HZ
;
859 #ifdef CONFIG_PROC_FS
860 err
= udp6_proc_init(net
);
863 err
= tcp6_proc_init(net
);
866 err
= ac6_proc_init(net
);
873 #ifdef CONFIG_PROC_FS
882 static void inet6_net_exit(struct net
*net
)
884 #ifdef CONFIG_PROC_FS
891 static struct pernet_operations inet6_net_ops
= {
892 .init
= inet6_net_init
,
893 .exit
= inet6_net_exit
,
896 static int __init
inet6_init(void)
898 struct sk_buff
*dummy_skb
;
902 BUILD_BUG_ON(sizeof(struct inet6_skb_parm
) > sizeof(dummy_skb
->cb
));
904 err
= proto_register(&tcpv6_prot
, 1);
908 err
= proto_register(&udpv6_prot
, 1);
910 goto out_unregister_tcp_proto
;
912 err
= proto_register(&udplitev6_prot
, 1);
914 goto out_unregister_udp_proto
;
916 err
= proto_register(&rawv6_prot
, 1);
918 goto out_unregister_udplite_proto
;
921 /* Register the socket-side information for inet6_create. */
922 for(r
= &inetsw6
[0]; r
< &inetsw6
[SOCK_MAX
]; ++r
)
925 /* We MUST register RAW sockets before we create the ICMP6,
926 * IGMP6, or NDISC control sockets.
930 goto out_unregister_raw_proto
;
932 /* Register the family here so that the init calls below will
933 * be able to create sockets. (?? is this dangerous ??)
935 err
= sock_register(&inet6_family_ops
);
937 goto out_sock_register_fail
;
939 /* Initialise ipv6 mibs */
940 err
= init_ipv6_mibs();
942 goto out_unregister_sock
;
945 * ipngwg API draft makes clear that the correct semantics
946 * for TCP and UDP is to consider one TCP and UDP instance
947 * in a host availiable by both INET and INET6 APIs and
948 * able to communicate via both network protocols.
951 err
= register_pernet_subsys(&inet6_net_ops
);
953 goto register_pernet_fail
;
957 #ifdef CONFIG_IPV6_MROUTE
966 err
= ipv6_netfilter_init();
969 /* Create /proc/foo6 entries. */
970 #ifdef CONFIG_PROC_FS
972 if (raw6_proc_init())
974 if (udplite6_proc_init())
975 goto proc_udplite6_fail
;
976 if (ipv6_misc_proc_init())
977 goto proc_misc6_fail
;
981 err
= ip6_route_init();
984 err
= ip6_flowlabel_init();
986 goto ip6_flowlabel_fail
;
987 err
= addrconf_init();
991 /* Init v6 extension headers. */
992 err
= ipv6_exthdrs_init();
994 goto ipv6_exthdrs_fail
;
996 err
= ipv6_frag_init();
1000 /* Init v6 transport protocols. */
1005 err
= udplitev6_init();
1007 goto udplitev6_fail
;
1013 err
= ipv6_packet_init();
1015 goto ipv6_packet_fail
;
1017 #ifdef CONFIG_SYSCTL
1018 err
= ipv6_sysctl_register();
1025 #ifdef CONFIG_SYSCTL
1027 ipv6_packet_cleanup();
1038 ipv6_exthdrs_exit();
1042 ip6_flowlabel_cleanup();
1044 ip6_route_cleanup();
1046 #ifdef CONFIG_PROC_FS
1049 ipv6_misc_proc_exit();
1051 udplite6_proc_exit();
1056 ipv6_netfilter_fini();
1064 unregister_pernet_subsys(&inet6_net_ops
);
1065 register_pernet_fail
:
1066 cleanup_ipv6_mibs();
1067 out_unregister_sock
:
1068 sock_unregister(PF_INET6
);
1069 rtnl_unregister_all(PF_INET6
);
1070 out_sock_register_fail
:
1072 out_unregister_raw_proto
:
1073 proto_unregister(&rawv6_prot
);
1074 out_unregister_udplite_proto
:
1075 proto_unregister(&udplitev6_prot
);
1076 out_unregister_udp_proto
:
1077 proto_unregister(&udpv6_prot
);
1078 out_unregister_tcp_proto
:
1079 proto_unregister(&tcpv6_prot
);
1082 module_init(inet6_init
);
1084 static void __exit
inet6_exit(void)
1086 /* First of all disallow new sockets creation. */
1087 sock_unregister(PF_INET6
);
1088 /* Disallow any further netlink messages */
1089 rtnl_unregister_all(PF_INET6
);
1091 #ifdef CONFIG_SYSCTL
1092 ipv6_sysctl_unregister();
1098 /* Cleanup code parts. */
1099 ipv6_packet_cleanup();
1101 ipv6_exthdrs_exit();
1103 ip6_flowlabel_cleanup();
1104 ip6_route_cleanup();
1105 #ifdef CONFIG_PROC_FS
1107 /* Cleanup code parts. */
1109 ipv6_misc_proc_exit();
1110 udplite6_proc_exit();
1113 ipv6_netfilter_fini();
1119 unregister_pernet_subsys(&inet6_net_ops
);
1120 cleanup_ipv6_mibs();
1121 proto_unregister(&rawv6_prot
);
1122 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
);