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/config.h>
26 #include <linux/errno.h>
27 #include <linux/types.h>
28 #include <linux/socket.h>
30 #include <linux/kernel.h>
31 #include <linux/sched.h>
32 #include <linux/timer.h>
33 #include <linux/string.h>
34 #include <linux/sockios.h>
35 #include <linux/net.h>
36 #include <linux/fcntl.h>
38 #include <linux/interrupt.h>
39 #include <linux/proc_fs.h>
40 #include <linux/stat.h>
41 #include <linux/init.h>
43 #include <linux/inet.h>
44 #include <linux/netdevice.h>
45 #include <linux/icmpv6.h>
46 #include <linux/smp_lock.h>
47 #include <linux/netfilter_ipv6.h>
54 #include <net/protocol.h>
55 #include <net/inet_common.h>
56 #include <net/transp_v6.h>
57 #include <net/ip6_route.h>
58 #include <net/addrconf.h>
59 #ifdef CONFIG_IPV6_TUNNEL
60 #include <net/ip6_tunnel.h>
63 #include <asm/uaccess.h>
64 #include <asm/system.h>
66 MODULE_AUTHOR("Cast of dozens");
67 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
68 MODULE_LICENSE("GPL");
70 int sysctl_ipv6_bindv6only
;
72 /* The inetsw table contains everything that inet_create needs to
75 static struct list_head inetsw6
[SOCK_MAX
];
76 static DEFINE_SPINLOCK(inetsw6_lock
);
78 static __inline__
struct ipv6_pinfo
*inet6_sk_generic(struct sock
*sk
)
80 const int offset
= sk
->sk_prot
->obj_size
- sizeof(struct ipv6_pinfo
);
82 return (struct ipv6_pinfo
*)(((u8
*)sk
) + offset
);
85 static int inet6_create(struct socket
*sock
, int protocol
)
87 struct inet_sock
*inet
;
88 struct ipv6_pinfo
*np
;
91 struct inet_protosw
*answer
;
92 struct proto
*answer_prot
;
93 unsigned char answer_flags
;
95 int try_loading_module
= 0;
98 /* Look for the requested type/protocol pair. */
101 err
= -ESOCKTNOSUPPORT
;
103 list_for_each_rcu(p
, &inetsw6
[sock
->type
]) {
104 answer
= list_entry(p
, struct inet_protosw
, 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
;
124 if (try_loading_module
< 2) {
127 * Be more specific, e.g. net-pf-10-proto-132-type-1
128 * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
130 if (++try_loading_module
== 1)
131 request_module("net-pf-%d-proto-%d-type-%d",
132 PF_INET6
, protocol
, sock
->type
);
134 * Fall back to generic, e.g. net-pf-10-proto-132
135 * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
138 request_module("net-pf-%d-proto-%d",
140 goto lookup_protocol
;
146 if (answer
->capability
> 0 && !capable(answer
->capability
))
149 sock
->ops
= answer
->ops
;
150 answer_prot
= answer
->prot
;
151 answer_no_check
= answer
->no_check
;
152 answer_flags
= answer
->flags
;
155 BUG_TRAP(answer_prot
->slab
!= NULL
);
158 sk
= sk_alloc(PF_INET6
, GFP_KERNEL
, answer_prot
, 1);
162 sock_init_data(sock
, sk
);
165 sk
->sk_no_check
= answer_no_check
;
166 if (INET_PROTOSW_REUSE
& answer_flags
)
170 inet
->is_icsk
= INET_PROTOSW_ICSK
& answer_flags
;
172 if (SOCK_RAW
== sock
->type
) {
173 inet
->num
= protocol
;
174 if (IPPROTO_RAW
== protocol
)
178 sk
->sk_destruct
= inet_sock_destruct
;
179 sk
->sk_family
= PF_INET6
;
180 sk
->sk_protocol
= protocol
;
182 sk
->sk_backlog_rcv
= answer
->prot
->backlog_rcv
;
184 inet_sk(sk
)->pinet6
= np
= inet6_sk_generic(sk
);
188 np
->pmtudisc
= IPV6_PMTUDISC_WANT
;
189 np
->ipv6only
= sysctl_ipv6_bindv6only
;
191 /* Init the ipv4 part of the socket since we can have sockets
192 * using v6 API for ipv4.
199 inet
->mc_list
= NULL
;
201 if (ipv4_config
.no_pmtu_disc
)
202 inet
->pmtudisc
= IP_PMTUDISC_DONT
;
204 inet
->pmtudisc
= IP_PMTUDISC_WANT
;
206 * Increment only the relevant sk_prot->socks debug field, this changes
207 * the previous behaviour of incrementing both the equivalent to
208 * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
210 * This allows better debug granularity as we'll know exactly how many
211 * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
212 * transport protocol socks. -acme
214 sk_refcnt_debug_inc(sk
);
217 /* It assumes that any protocol which allows
218 * the user to assign a number at socket
219 * creation time automatically shares.
221 inet
->sport
= ntohs(inet
->num
);
222 sk
->sk_prot
->hash(sk
);
224 if (sk
->sk_prot
->init
) {
225 err
= sk
->sk_prot
->init(sk
);
227 sk_common_release(sk
);
239 /* bind for INET6 API */
240 int inet6_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
242 struct sockaddr_in6
*addr
=(struct sockaddr_in6
*)uaddr
;
243 struct sock
*sk
= sock
->sk
;
244 struct inet_sock
*inet
= inet_sk(sk
);
245 struct ipv6_pinfo
*np
= inet6_sk(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(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(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(&addr
->sin6_addr
, dev
, 0)) {
313 err
= -EADDRNOTAVAIL
;
322 inet
->rcv_saddr
= v4addr
;
323 inet
->saddr
= v4addr
;
325 ipv6_addr_copy(&np
->rcv_saddr
, &addr
->sin6_addr
);
327 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
328 ipv6_addr_copy(&np
->saddr
, &addr
->sin6_addr
);
330 /* Make sure we are allowed to bind here. */
331 if (sk
->sk_prot
->get_port(sk
, snum
)) {
332 inet_reset_saddr(sk
);
337 if (addr_type
!= IPV6_ADDR_ANY
)
338 sk
->sk_userlocks
|= SOCK_BINDADDR_LOCK
;
340 sk
->sk_userlocks
|= SOCK_BINDPORT_LOCK
;
341 inet
->sport
= ntohs(inet
->num
);
349 int inet6_release(struct socket
*sock
)
351 struct sock
*sk
= sock
->sk
;
357 ipv6_sock_mc_close(sk
);
360 ipv6_sock_ac_close(sk
);
362 return inet_release(sock
);
365 int inet6_destroy_sock(struct sock
*sk
)
367 struct ipv6_pinfo
*np
= inet6_sk(sk
);
369 struct ipv6_txoptions
*opt
;
372 * Release destination entry
377 /* Release rx options */
379 if ((skb
= xchg(&np
->pktoptions
, NULL
)) != NULL
)
382 /* Free flowlabels */
383 fl6_free_socklist(sk
);
385 /* Free tx options */
387 if ((opt
= xchg(&np
->opt
, NULL
)) != NULL
)
388 sock_kfree_s(sk
, opt
, opt
->tot_len
);
393 EXPORT_SYMBOL_GPL(inet6_destroy_sock
);
396 * This does both peername and sockname.
399 int inet6_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
400 int *uaddr_len
, int peer
)
402 struct sockaddr_in6
*sin
=(struct sockaddr_in6
*)uaddr
;
403 struct sock
*sk
= sock
->sk
;
404 struct inet_sock
*inet
= inet_sk(sk
);
405 struct ipv6_pinfo
*np
= inet6_sk(sk
);
407 sin
->sin6_family
= AF_INET6
;
408 sin
->sin6_flowinfo
= 0;
409 sin
->sin6_scope_id
= 0;
413 if (((1 << sk
->sk_state
) & (TCPF_CLOSE
| TCPF_SYN_SENT
)) &&
416 sin
->sin6_port
= inet
->dport
;
417 ipv6_addr_copy(&sin
->sin6_addr
, &np
->daddr
);
419 sin
->sin6_flowinfo
= np
->flow_label
;
421 if (ipv6_addr_any(&np
->rcv_saddr
))
422 ipv6_addr_copy(&sin
->sin6_addr
, &np
->saddr
);
424 ipv6_addr_copy(&sin
->sin6_addr
, &np
->rcv_saddr
);
426 sin
->sin6_port
= inet
->sport
;
428 if (ipv6_addr_type(&sin
->sin6_addr
) & IPV6_ADDR_LINKLOCAL
)
429 sin
->sin6_scope_id
= sk
->sk_bound_dev_if
;
430 *uaddr_len
= sizeof(*sin
);
434 int inet6_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
436 struct sock
*sk
= sock
->sk
;
442 return sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
447 return(ipv6_route_ioctl(cmd
,(void __user
*)arg
));
450 return addrconf_add_ifaddr((void __user
*) arg
);
452 return addrconf_del_ifaddr((void __user
*) arg
);
454 return addrconf_set_dstaddr((void __user
*) arg
);
456 if (!sk
->sk_prot
->ioctl
||
457 (err
= sk
->sk_prot
->ioctl(sk
, cmd
, arg
)) == -ENOIOCTLCMD
)
458 return(dev_ioctl(cmd
,(void __user
*) arg
));
465 struct proto_ops inet6_stream_ops
= {
467 .owner
= THIS_MODULE
,
468 .release
= inet6_release
,
470 .connect
= inet_stream_connect
, /* ok */
471 .socketpair
= sock_no_socketpair
, /* a do nothing */
472 .accept
= inet_accept
, /* ok */
473 .getname
= inet6_getname
,
474 .poll
= tcp_poll
, /* ok */
475 .ioctl
= inet6_ioctl
, /* must change */
476 .listen
= inet_listen
, /* ok */
477 .shutdown
= inet_shutdown
, /* ok */
478 .setsockopt
= sock_common_setsockopt
, /* ok */
479 .getsockopt
= sock_common_getsockopt
, /* ok */
480 .sendmsg
= inet_sendmsg
, /* ok */
481 .recvmsg
= sock_common_recvmsg
, /* ok */
482 .mmap
= sock_no_mmap
,
483 .sendpage
= tcp_sendpage
486 struct proto_ops inet6_dgram_ops
= {
488 .owner
= THIS_MODULE
,
489 .release
= inet6_release
,
491 .connect
= inet_dgram_connect
, /* ok */
492 .socketpair
= sock_no_socketpair
, /* a do nothing */
493 .accept
= sock_no_accept
, /* a do nothing */
494 .getname
= inet6_getname
,
495 .poll
= udp_poll
, /* ok */
496 .ioctl
= inet6_ioctl
, /* must change */
497 .listen
= sock_no_listen
, /* ok */
498 .shutdown
= inet_shutdown
, /* ok */
499 .setsockopt
= sock_common_setsockopt
, /* ok */
500 .getsockopt
= sock_common_getsockopt
, /* ok */
501 .sendmsg
= inet_sendmsg
, /* ok */
502 .recvmsg
= sock_common_recvmsg
, /* ok */
503 .mmap
= sock_no_mmap
,
504 .sendpage
= sock_no_sendpage
,
507 static struct net_proto_family inet6_family_ops
= {
509 .create
= inet6_create
,
510 .owner
= THIS_MODULE
,
513 /* Same as inet6_dgram_ops, sans udp_poll. */
514 static struct proto_ops inet6_sockraw_ops
= {
516 .owner
= THIS_MODULE
,
517 .release
= inet6_release
,
519 .connect
= inet_dgram_connect
, /* ok */
520 .socketpair
= sock_no_socketpair
, /* a do nothing */
521 .accept
= sock_no_accept
, /* a do nothing */
522 .getname
= inet6_getname
,
523 .poll
= datagram_poll
, /* ok */
524 .ioctl
= inet6_ioctl
, /* must change */
525 .listen
= sock_no_listen
, /* ok */
526 .shutdown
= inet_shutdown
, /* ok */
527 .setsockopt
= sock_common_setsockopt
, /* ok */
528 .getsockopt
= sock_common_getsockopt
, /* ok */
529 .sendmsg
= inet_sendmsg
, /* ok */
530 .recvmsg
= sock_common_recvmsg
, /* ok */
531 .mmap
= sock_no_mmap
,
532 .sendpage
= sock_no_sendpage
,
535 static struct inet_protosw rawv6_protosw
= {
537 .protocol
= IPPROTO_IP
, /* wild card */
539 .ops
= &inet6_sockraw_ops
,
540 .capability
= CAP_NET_RAW
,
541 .no_check
= UDP_CSUM_DEFAULT
,
542 .flags
= INET_PROTOSW_REUSE
,
546 inet6_register_protosw(struct inet_protosw
*p
)
548 struct list_head
*lh
;
549 struct inet_protosw
*answer
;
550 int protocol
= p
->protocol
;
551 struct list_head
*last_perm
;
553 spin_lock_bh(&inetsw6_lock
);
555 if (p
->type
>= SOCK_MAX
)
558 /* If we are trying to override a permanent protocol, bail. */
560 last_perm
= &inetsw6
[p
->type
];
561 list_for_each(lh
, &inetsw6
[p
->type
]) {
562 answer
= list_entry(lh
, struct inet_protosw
, list
);
564 /* Check only the non-wild match. */
565 if (INET_PROTOSW_PERMANENT
& answer
->flags
) {
566 if (protocol
== answer
->protocol
)
576 /* Add the new entry after the last permanent entry if any, so that
577 * the new entry does not override a permanent entry when matched with
578 * a wild-card protocol. But it is allowed to override any existing
579 * non-permanent entry. This means that when we remove this entry, the
580 * system automatically returns to the old behavior.
582 list_add_rcu(&p
->list
, last_perm
);
584 spin_unlock_bh(&inetsw6_lock
);
588 printk(KERN_ERR
"Attempt to override permanent protocol %d.\n",
594 "Ignoring attempt to register invalid socket type %d.\n",
600 inet6_unregister_protosw(struct inet_protosw
*p
)
602 if (INET_PROTOSW_PERMANENT
& p
->flags
) {
604 "Attempt to unregister permanent protocol %d.\n",
607 spin_lock_bh(&inetsw6_lock
);
608 list_del_rcu(&p
->list
);
609 spin_unlock_bh(&inetsw6_lock
);
615 int inet6_sk_rebuild_header(struct sock
*sk
)
618 struct dst_entry
*dst
;
619 struct ipv6_pinfo
*np
= inet6_sk(sk
);
621 dst
= __sk_dst_check(sk
, np
->dst_cookie
);
624 struct inet_sock
*inet
= inet_sk(sk
);
625 struct in6_addr
*final_p
= NULL
, final
;
628 memset(&fl
, 0, sizeof(fl
));
629 fl
.proto
= sk
->sk_protocol
;
630 ipv6_addr_copy(&fl
.fl6_dst
, &np
->daddr
);
631 ipv6_addr_copy(&fl
.fl6_src
, &np
->saddr
);
632 fl
.fl6_flowlabel
= np
->flow_label
;
633 fl
.oif
= sk
->sk_bound_dev_if
;
634 fl
.fl_ip_dport
= inet
->dport
;
635 fl
.fl_ip_sport
= inet
->sport
;
637 if (np
->opt
&& np
->opt
->srcrt
) {
638 struct rt0_hdr
*rt0
= (struct rt0_hdr
*) np
->opt
->srcrt
;
639 ipv6_addr_copy(&final
, &fl
.fl6_dst
);
640 ipv6_addr_copy(&fl
.fl6_dst
, rt0
->addr
);
644 err
= ip6_dst_lookup(sk
, &dst
, &fl
);
646 sk
->sk_route_caps
= 0;
650 ipv6_addr_copy(&fl
.fl6_dst
, final_p
);
652 if ((err
= xfrm_lookup(&dst
, &fl
, sk
, 0)) < 0) {
653 sk
->sk_err_soft
= -err
;
657 ip6_dst_store(sk
, dst
, NULL
);
658 sk
->sk_route_caps
= dst
->dev
->features
&
659 ~(NETIF_F_IP_CSUM
| NETIF_F_TSO
);
665 EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header
);
667 int ipv6_opt_accepted(struct sock
*sk
, struct sk_buff
*skb
)
669 struct ipv6_pinfo
*np
= inet6_sk(sk
);
670 struct inet6_skb_parm
*opt
= IP6CB(skb
);
673 if ((opt
->hop
&& (np
->rxopt
.bits
.hopopts
||
674 np
->rxopt
.bits
.ohopopts
)) ||
675 ((IPV6_FLOWINFO_MASK
& *(u32
*)skb
->nh
.raw
) &&
676 np
->rxopt
.bits
.rxflow
) ||
677 (opt
->srcrt
&& (np
->rxopt
.bits
.srcrt
||
678 np
->rxopt
.bits
.osrcrt
)) ||
679 ((opt
->dst1
|| opt
->dst0
) &&
680 (np
->rxopt
.bits
.dstopts
|| np
->rxopt
.bits
.odstopts
)))
686 EXPORT_SYMBOL_GPL(ipv6_opt_accepted
);
689 snmp6_mib_init(void *ptr
[2], size_t mibsize
, size_t mibalign
)
694 ptr
[0] = __alloc_percpu(mibsize
, mibalign
);
698 ptr
[1] = __alloc_percpu(mibsize
, mibalign
);
712 snmp6_mib_free(void *ptr
[2])
720 ptr
[0] = ptr
[1] = NULL
;
723 static int __init
init_ipv6_mibs(void)
725 if (snmp6_mib_init((void **)ipv6_statistics
, sizeof (struct ipstats_mib
),
726 __alignof__(struct ipstats_mib
)) < 0)
728 if (snmp6_mib_init((void **)icmpv6_statistics
, sizeof (struct icmpv6_mib
),
729 __alignof__(struct icmpv6_mib
)) < 0)
731 if (snmp6_mib_init((void **)udp_stats_in6
, sizeof (struct udp_mib
),
732 __alignof__(struct udp_mib
)) < 0)
737 snmp6_mib_free((void **)icmpv6_statistics
);
739 snmp6_mib_free((void **)ipv6_statistics
);
745 static void cleanup_ipv6_mibs(void)
747 snmp6_mib_free((void **)ipv6_statistics
);
748 snmp6_mib_free((void **)icmpv6_statistics
);
749 snmp6_mib_free((void **)udp_stats_in6
);
752 static int __init
inet6_init(void)
754 struct sk_buff
*dummy_skb
;
759 #if 0 /* FIXME --RR */
760 if (!mod_member_present(&__this_module
, can_unload
))
763 __this_module
.can_unload
= &ipv6_unload
;
767 if (sizeof(struct inet6_skb_parm
) > sizeof(dummy_skb
->cb
)) {
768 printk(KERN_CRIT
"inet6_proto_init: size fault\n");
772 err
= proto_register(&tcpv6_prot
, 1);
776 err
= proto_register(&udpv6_prot
, 1);
778 goto out_unregister_tcp_proto
;
780 err
= proto_register(&rawv6_prot
, 1);
782 goto out_unregister_udp_proto
;
785 /* Register the socket-side information for inet6_create. */
786 for(r
= &inetsw6
[0]; r
< &inetsw6
[SOCK_MAX
]; ++r
)
789 /* We MUST register RAW sockets before we create the ICMP6,
790 * IGMP6, or NDISC control sockets.
792 inet6_register_protosw(&rawv6_protosw
);
794 /* Register the family here so that the init calls below will
795 * be able to create sockets. (?? is this dangerous ??)
797 err
= sock_register(&inet6_family_ops
);
799 goto out_unregister_raw_proto
;
801 /* Initialise ipv6 mibs */
802 err
= init_ipv6_mibs();
804 goto out_unregister_sock
;
807 * ipngwg API draft makes clear that the correct semantics
808 * for TCP and UDP is to consider one TCP and UDP instance
809 * in a host availiable by both INET and INET6 APIs and
810 * able to communicate via both network protocols.
814 ipv6_sysctl_register();
816 err
= icmpv6_init(&inet6_family_ops
);
819 err
= ndisc_init(&inet6_family_ops
);
822 err
= igmp6_init(&inet6_family_ops
);
825 err
= ipv6_netfilter_init();
828 /* Create /proc/foo6 entries. */
829 #ifdef CONFIG_PROC_FS
831 if (raw6_proc_init())
833 if (tcp6_proc_init())
835 if (udp6_proc_init())
837 if (ipv6_misc_proc_init())
838 goto proc_misc6_fail
;
841 goto proc_anycast6_fail
;
846 ip6_flowlabel_init();
847 err
= addrconf_init();
852 /* Init v6 extension headers. */
858 /* Init v6 transport protocols. */
868 ip6_flowlabel_cleanup();
870 #ifdef CONFIG_PROC_FS
875 ipv6_misc_proc_exit();
884 ipv6_netfilter_fini();
893 ipv6_sysctl_unregister();
897 sock_unregister(PF_INET6
);
898 out_unregister_raw_proto
:
899 proto_unregister(&rawv6_prot
);
900 out_unregister_udp_proto
:
901 proto_unregister(&udpv6_prot
);
902 out_unregister_tcp_proto
:
903 proto_unregister(&tcpv6_prot
);
906 module_init(inet6_init
);
908 static void __exit
inet6_exit(void)
910 /* First of all disallow new sockets creation. */
911 sock_unregister(PF_INET6
);
912 #ifdef CONFIG_PROC_FS
915 ipv6_misc_proc_exit();
920 /* Cleanup code parts. */
922 ip6_flowlabel_cleanup();
925 ipv6_packet_cleanup();
927 ipv6_netfilter_fini();
931 ipv6_sysctl_unregister();
934 proto_unregister(&rawv6_prot
);
935 proto_unregister(&udpv6_prot
);
936 proto_unregister(&tcpv6_prot
);
938 module_exit(inet6_exit
);
940 MODULE_ALIAS_NETPROTO(PF_INET6
);