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in6_proto.c revision 1.100.2.1
      1  1.100.2.1       tls /*	$NetBSD: in6_proto.c,v 1.100.2.1 2014/08/10 06:56:30 tls Exp $	*/
      2       1.21    itojun /*	$KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun Exp $	*/
      3        1.3   thorpej 
      4        1.2    itojun /*
      5        1.2    itojun  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      6        1.2    itojun  * All rights reserved.
      7       1.18    itojun  *
      8        1.2    itojun  * Redistribution and use in source and binary forms, with or without
      9        1.2    itojun  * modification, are permitted provided that the following conditions
     10        1.2    itojun  * are met:
     11        1.2    itojun  * 1. Redistributions of source code must retain the above copyright
     12        1.2    itojun  *    notice, this list of conditions and the following disclaimer.
     13        1.2    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     14        1.2    itojun  *    notice, this list of conditions and the following disclaimer in the
     15        1.2    itojun  *    documentation and/or other materials provided with the distribution.
     16        1.2    itojun  * 3. Neither the name of the project nor the names of its contributors
     17        1.2    itojun  *    may be used to endorse or promote products derived from this software
     18        1.2    itojun  *    without specific prior written permission.
     19       1.18    itojun  *
     20        1.2    itojun  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     21        1.2    itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22        1.2    itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23        1.2    itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     24        1.2    itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25        1.2    itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26        1.2    itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27        1.2    itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28        1.2    itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29        1.2    itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30        1.2    itojun  * SUCH DAMAGE.
     31        1.2    itojun  */
     32        1.2    itojun 
     33        1.2    itojun /*
     34        1.2    itojun  * Copyright (c) 1982, 1986, 1993
     35        1.2    itojun  *	The Regents of the University of California.  All rights reserved.
     36        1.2    itojun  *
     37        1.2    itojun  * Redistribution and use in source and binary forms, with or without
     38        1.2    itojun  * modification, are permitted provided that the following conditions
     39        1.2    itojun  * are met:
     40        1.2    itojun  * 1. Redistributions of source code must retain the above copyright
     41        1.2    itojun  *    notice, this list of conditions and the following disclaimer.
     42        1.2    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     43        1.2    itojun  *    notice, this list of conditions and the following disclaimer in the
     44        1.2    itojun  *    documentation and/or other materials provided with the distribution.
     45       1.49       agc  * 3. Neither the name of the University nor the names of its contributors
     46        1.2    itojun  *    may be used to endorse or promote products derived from this software
     47        1.2    itojun  *    without specific prior written permission.
     48        1.2    itojun  *
     49        1.2    itojun  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     50        1.2    itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     51        1.2    itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     52        1.2    itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     53        1.2    itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     54        1.2    itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     55        1.2    itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     56        1.2    itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     57        1.2    itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     58        1.2    itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     59        1.2    itojun  * SUCH DAMAGE.
     60        1.2    itojun  *
     61        1.2    itojun  *	@(#)in_proto.c	8.1 (Berkeley) 6/10/93
     62        1.2    itojun  */
     63       1.34     lukem 
     64       1.34     lukem #include <sys/cdefs.h>
     65  1.100.2.1       tls __KERNEL_RCSID(0, "$NetBSD: in6_proto.c,v 1.100.2.1 2014/08/10 06:56:30 tls Exp $");
     66        1.2    itojun 
     67       1.88     joerg #include "opt_gateway.h"
     68        1.2    itojun #include "opt_inet.h"
     69        1.4   thorpej #include "opt_ipsec.h"
     70        1.2    itojun 
     71        1.2    itojun #include <sys/param.h>
     72        1.2    itojun #include <sys/socket.h>
     73        1.2    itojun #include <sys/protosw.h>
     74        1.2    itojun #include <sys/kernel.h>
     75        1.2    itojun #include <sys/domain.h>
     76        1.2    itojun #include <sys/mbuf.h>
     77        1.2    itojun 
     78        1.2    itojun #include <net/if.h>
     79        1.2    itojun #include <net/radix.h>
     80        1.2    itojun #include <net/route.h>
     81        1.2    itojun 
     82        1.2    itojun #include <netinet/in.h>
     83        1.2    itojun #include <netinet/in_systm.h>
     84        1.2    itojun #include <netinet/in_var.h>
     85       1.17    itojun #include <netinet/ip_encap.h>
     86        1.2    itojun #include <netinet/ip.h>
     87        1.2    itojun #include <netinet/ip_var.h>
     88        1.2    itojun #include <netinet/in_pcb.h>
     89       1.13    itojun #include <netinet/ip6.h>
     90        1.2    itojun #include <netinet6/ip6_var.h>
     91       1.13    itojun #include <netinet/icmp6.h>
     92        1.2    itojun #include <netinet6/in6_pcb.h>
     93        1.2    itojun 
     94        1.2    itojun #include <netinet/tcp.h>
     95        1.2    itojun #include <netinet/tcp_fsm.h>
     96        1.2    itojun #include <netinet/tcp_seq.h>
     97        1.2    itojun #include <netinet/tcp_timer.h>
     98        1.2    itojun #include <netinet/tcp_var.h>
     99        1.2    itojun #include <netinet/tcpip.h>
    100        1.2    itojun #include <netinet/tcp_debug.h>
    101        1.2    itojun 
    102        1.2    itojun #include <netinet6/udp6.h>
    103        1.2    itojun #include <netinet6/udp6_var.h>
    104        1.2    itojun 
    105        1.2    itojun #include <netinet6/pim6_var.h>
    106        1.2    itojun 
    107        1.2    itojun #include <netinet6/nd6.h>
    108        1.2    itojun 
    109       1.99  christos #ifdef IPSEC
    110       1.70  degroote #include <netipsec/ipsec.h>
    111       1.70  degroote #include <netipsec/ipsec6.h>
    112       1.70  degroote #include <netipsec/key.h>
    113       1.99  christos #endif /* IPSEC */
    114       1.70  degroote 
    115       1.70  degroote 
    116       1.63  liamjfoy #include "carp.h"
    117       1.63  liamjfoy #if NCARP > 0
    118       1.63  liamjfoy #include <netinet/ip_carp.h>
    119       1.63  liamjfoy #endif
    120       1.63  liamjfoy 
    121       1.68    rpaulo #include "etherip.h"
    122       1.89  jakllsch #if NETHERIP > 0
    123       1.68    rpaulo #include <netinet6/ip6_etherip.h>
    124       1.68    rpaulo #endif
    125       1.68    rpaulo 
    126        1.2    itojun #include <netinet6/ip6protosw.h>
    127        1.2    itojun 
    128       1.35    itojun #include <net/net_osdep.h>
    129       1.35    itojun 
    130        1.2    itojun /*
    131        1.2    itojun  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
    132        1.2    itojun  */
    133        1.2    itojun 
    134       1.58      matt DOMAIN_DEFINE(inet6domain);	/* forward declare and add to link set */
    135        1.2    itojun 
    136       1.82        ad /* Wrappers to acquire kernel_lock. */
    137       1.82        ad 
    138       1.82        ad PR_WRAP_CTLINPUT(rip6_ctlinput)
    139       1.82        ad PR_WRAP_CTLINPUT(encap6_ctlinput)
    140       1.82        ad PR_WRAP_CTLINPUT(udp6_ctlinput)
    141       1.82        ad PR_WRAP_CTLINPUT(tcp6_ctlinput)
    142       1.82        ad 
    143       1.82        ad #define	rip6_ctlinput	rip6_ctlinput_wrapper
    144       1.82        ad #define	encap6_ctlinput	encap6_ctlinput_wrapper
    145       1.82        ad #define	udp6_ctlinput	udp6_ctlinput_wrapper
    146       1.82        ad #define	tcp6_ctlinput	tcp6_ctlinput_wrapper
    147       1.82        ad 
    148       1.82        ad PR_WRAP_CTLOUTPUT(rip6_ctloutput)
    149       1.82        ad PR_WRAP_CTLOUTPUT(tcp_ctloutput)
    150       1.93  christos PR_WRAP_CTLOUTPUT(udp6_ctloutput)
    151       1.82        ad PR_WRAP_CTLOUTPUT(icmp6_ctloutput)
    152       1.82        ad 
    153       1.82        ad #define	rip6_ctloutput	rip6_ctloutput_wrapper
    154       1.82        ad #define	tcp_ctloutput	tcp_ctloutput_wrapper
    155       1.93  christos #define	udp6_ctloutput	udp6_ctloutput_wrapper
    156       1.82        ad #define	icmp6_ctloutput	icmp6_ctloutput_wrapper
    157       1.82        ad 
    158       1.99  christos #if defined(IPSEC)
    159       1.82        ad PR_WRAP_CTLINPUT(ah6_ctlinput)
    160       1.85   tsutsui 
    161       1.85   tsutsui #define	ah6_ctlinput	ah6_ctlinput_wrapper
    162       1.85   tsutsui #endif
    163       1.85   tsutsui 
    164       1.99  christos #if defined(IPSEC)
    165       1.82        ad PR_WRAP_CTLINPUT(esp6_ctlinput)
    166       1.82        ad 
    167       1.82        ad #define	esp6_ctlinput	esp6_ctlinput_wrapper
    168       1.82        ad #endif
    169       1.82        ad 
    170      1.100     pooka static void
    171      1.100     pooka tcp6_init(void)
    172      1.100     pooka {
    173      1.100     pooka 
    174      1.100     pooka 	icmp6_mtudisc_callback_register(tcp6_mtudisc_callback);
    175      1.100     pooka 
    176      1.100     pooka 	tcp_init_common(sizeof(struct ip6_hdr));
    177      1.100     pooka }
    178      1.100     pooka 
    179       1.57      matt const struct ip6protosw inet6sw[] = {
    180       1.74  liamjfoy {	.pr_domain = &inet6domain,
    181       1.74  liamjfoy 	.pr_protocol = IPPROTO_IPV6,
    182       1.74  liamjfoy 	.pr_init = ip6_init,
    183       1.91    dyoung 	.pr_fasttimo = frag6_fasttimo,
    184       1.74  liamjfoy 	.pr_slowtimo = frag6_slowtimo,
    185       1.91    dyoung 	.pr_drain = frag6_drainstub,
    186       1.74  liamjfoy },
    187       1.74  liamjfoy {	.pr_type = SOCK_DGRAM,
    188       1.74  liamjfoy 	.pr_domain = &inet6domain,
    189       1.74  liamjfoy 	.pr_protocol = IPPROTO_UDP,
    190       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF,
    191       1.74  liamjfoy 	.pr_input = udp6_input,
    192       1.74  liamjfoy 	.pr_ctlinput = udp6_ctlinput,
    193       1.93  christos 	.pr_ctloutput = udp6_ctloutput,
    194  1.100.2.1       tls 	.pr_usrreqs = &udp6_usrreqs,
    195       1.74  liamjfoy 	.pr_init = udp6_init,
    196       1.74  liamjfoy },
    197       1.74  liamjfoy {	.pr_type = SOCK_STREAM,
    198       1.74  liamjfoy 	.pr_domain = &inet6domain,
    199       1.74  liamjfoy 	.pr_protocol = IPPROTO_TCP,
    200       1.74  liamjfoy 	.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS|PR_PURGEIF,
    201       1.74  liamjfoy 	.pr_input = tcp6_input,
    202       1.74  liamjfoy 	.pr_ctlinput = tcp6_ctlinput,
    203       1.74  liamjfoy 	.pr_ctloutput = tcp_ctloutput,
    204  1.100.2.1       tls 	.pr_usrreqs = &tcp_usrreqs,
    205      1.100     pooka 	.pr_init = tcp6_init,
    206       1.91    dyoung 	.pr_fasttimo = tcp_fasttimo,
    207       1.91    dyoung 	.pr_drain = tcp_drainstub,
    208        1.2    itojun },
    209       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    210       1.74  liamjfoy 	.pr_domain = &inet6domain,
    211       1.74  liamjfoy 	.pr_protocol = IPPROTO_RAW,
    212       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF,
    213       1.74  liamjfoy 	.pr_input = rip6_input,
    214       1.74  liamjfoy 	.pr_output = rip6_output,
    215       1.74  liamjfoy 	.pr_ctlinput = rip6_ctlinput,
    216       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    217  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    218       1.74  liamjfoy },
    219       1.75  liamjfoy #ifdef GATEWAY
    220       1.75  liamjfoy {	.pr_domain = &inet6domain,
    221       1.75  liamjfoy 	.pr_protocol = IPPROTO_IPV6,
    222       1.75  liamjfoy 	.pr_slowtimo = ip6flow_slowtimo,
    223       1.84  liamjfoy 	.pr_init = ip6flow_poolinit,
    224       1.75  liamjfoy },
    225       1.75  liamjfoy #endif /* GATEWAY */
    226       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    227       1.74  liamjfoy 	.pr_domain = &inet6domain,
    228       1.74  liamjfoy 	.pr_protocol = IPPROTO_ICMPV6,
    229       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    230       1.74  liamjfoy 	.pr_input = icmp6_input,
    231       1.74  liamjfoy 	.pr_output = rip6_output,
    232       1.74  liamjfoy 	.pr_ctlinput = rip6_ctlinput,
    233       1.79    dyoung 	.pr_ctloutput = icmp6_ctloutput,
    234  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    235       1.74  liamjfoy 	.pr_init = icmp6_init,
    236       1.74  liamjfoy },
    237       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    238       1.74  liamjfoy 	.pr_domain = &inet6domain,
    239       1.74  liamjfoy 	.pr_protocol = IPPROTO_DSTOPTS,
    240       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    241       1.74  liamjfoy 	.pr_input = dest6_input,
    242       1.74  liamjfoy },
    243       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    244       1.74  liamjfoy 	.pr_domain = &inet6domain,
    245       1.74  liamjfoy 	.pr_protocol = IPPROTO_ROUTING,
    246       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    247       1.74  liamjfoy 	.pr_input = route6_input,
    248       1.74  liamjfoy },
    249       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    250       1.74  liamjfoy 	.pr_domain = &inet6domain,
    251       1.74  liamjfoy 	.pr_protocol = IPPROTO_FRAGMENT,
    252       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    253       1.74  liamjfoy 	.pr_input = frag6_input,
    254        1.2    itojun },
    255       1.99  christos #ifdef IPSEC
    256       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    257       1.74  liamjfoy 	.pr_domain = &inet6domain,
    258       1.74  liamjfoy 	.pr_protocol = IPPROTO_AH,
    259       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    260       1.74  liamjfoy 	.pr_input = ipsec6_common_input,
    261       1.74  liamjfoy 	.pr_ctlinput = ah6_ctlinput,
    262       1.74  liamjfoy },
    263       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    264       1.74  liamjfoy 	.pr_domain = &inet6domain,
    265       1.74  liamjfoy 	.pr_protocol = IPPROTO_ESP,
    266       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    267       1.74  liamjfoy 	.pr_input = ipsec6_common_input,
    268       1.74  liamjfoy 	.pr_ctlinput = esp6_ctlinput,
    269       1.74  liamjfoy },
    270       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    271       1.74  liamjfoy 	.pr_domain = &inet6domain,
    272       1.74  liamjfoy 	.pr_protocol = IPPROTO_IPCOMP,
    273       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    274       1.74  liamjfoy 	.pr_input = ipsec6_common_input,
    275       1.70  degroote },
    276       1.99  christos #endif /* IPSEC */
    277       1.17    itojun #ifdef INET
    278       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    279       1.74  liamjfoy 	.pr_domain = &inet6domain,
    280       1.74  liamjfoy 	.pr_protocol = IPPROTO_IPV4,
    281       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    282       1.74  liamjfoy 	.pr_input = encap6_input,
    283       1.74  liamjfoy 	.pr_output = rip6_output,
    284       1.74  liamjfoy 	.pr_ctlinput = encap6_ctlinput,
    285       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    286  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    287       1.74  liamjfoy 	.pr_init = encap_init,
    288        1.2    itojun },
    289       1.17    itojun #endif
    290       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    291       1.74  liamjfoy 	.pr_domain = &inet6domain,
    292       1.74  liamjfoy 	.pr_protocol = IPPROTO_IPV6,
    293       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    294       1.74  liamjfoy 	.pr_input = encap6_input,
    295       1.74  liamjfoy 	.pr_output = rip6_output,
    296       1.74  liamjfoy 	.pr_ctlinput = encap6_ctlinput,
    297       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    298  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    299       1.74  liamjfoy 	.pr_init = encap_init,
    300        1.2    itojun },
    301       1.89  jakllsch #if NETHERIP > 0
    302       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    303       1.74  liamjfoy 	.pr_domain = &inet6domain,
    304       1.74  liamjfoy 	.pr_protocol = IPPROTO_ETHERIP,
    305       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    306       1.74  liamjfoy 	.pr_input = ip6_etherip_input,
    307       1.74  liamjfoy 	.pr_output = rip6_output,
    308       1.74  liamjfoy 	.pr_ctlinput = rip6_ctlinput,
    309       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    310  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    311       1.68    rpaulo },
    312       1.68    rpaulo #endif
    313       1.63  liamjfoy #if NCARP > 0
    314       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    315       1.74  liamjfoy 	.pr_domain = &inet6domain,
    316       1.74  liamjfoy 	.pr_protocol = IPPROTO_CARP,
    317       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    318       1.74  liamjfoy 	.pr_input = carp6_proto_input,
    319       1.74  liamjfoy 	.pr_output = rip6_output,
    320       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    321  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    322       1.63  liamjfoy },
    323       1.63  liamjfoy #endif /* NCARP */
    324       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    325       1.74  liamjfoy 	.pr_domain = &inet6domain,
    326       1.74  liamjfoy 	.pr_protocol = IPPROTO_PIM,
    327       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    328       1.74  liamjfoy 	.pr_input = pim6_input,
    329       1.74  liamjfoy 	.pr_output = rip6_output,
    330       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    331  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    332       1.80   thorpej 	.pr_init = pim6_init,
    333        1.2    itojun },
    334        1.2    itojun /* raw wildcard */
    335       1.74  liamjfoy {	.pr_type = SOCK_RAW,
    336       1.74  liamjfoy 	.pr_domain = &inet6domain,
    337       1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    338       1.74  liamjfoy 	.pr_input = rip6_input,
    339       1.74  liamjfoy 	.pr_output = rip6_output,
    340       1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    341  1.100.2.1       tls 	.pr_usrreqs = &rip6_usrreqs,
    342       1.74  liamjfoy 	.pr_init = rip6_init,
    343        1.2    itojun },
    344        1.2    itojun };
    345       1.17    itojun 
    346       1.79    dyoung static const struct sockaddr_in6 in6_any = {
    347       1.79    dyoung 	  .sin6_len = sizeof(in6_any)
    348       1.79    dyoung 	, .sin6_family = AF_INET6
    349       1.79    dyoung 	, .sin6_port = 0
    350       1.79    dyoung 	, .sin6_flowinfo = 0
    351       1.79    dyoung 	, .sin6_addr = IN6ADDR_ANY_INIT
    352       1.79    dyoung 	, .sin6_scope_id = 0
    353       1.79    dyoung };
    354       1.79    dyoung 
    355      1.100     pooka bool in6_present = false;
    356      1.100     pooka static void
    357      1.100     pooka in6_init(void)
    358      1.100     pooka {
    359      1.100     pooka 
    360      1.100     pooka 	in6_present = true;
    361      1.100     pooka }
    362      1.100     pooka 
    363       1.66  christos struct domain inet6domain = {
    364       1.69    dyoung 	.dom_family = AF_INET6, .dom_name = "internet6",
    365      1.100     pooka 	.dom_init = in6_init, .dom_externalize = NULL, .dom_dispose = NULL,
    366       1.69    dyoung 	.dom_protosw = (const struct protosw *)inet6sw,
    367       1.69    dyoung 	.dom_protoswNPROTOSW = (const struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
    368       1.90    dyoung 	.dom_rtattach = rt_inithead,
    369       1.69    dyoung 	.dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3,
    370       1.83     pooka 	.dom_maxrtkey = sizeof(struct ip_pack6),
    371       1.69    dyoung 	.dom_ifattach = in6_domifattach, .dom_ifdetach = in6_domifdetach,
    372  1.100.2.1       tls 	.dom_ifqueues = { NULL, NULL },
    373       1.69    dyoung 	.dom_link = { NULL },
    374       1.76    dyoung 	.dom_mowner = MOWNER_INIT("",""),
    375       1.77    dyoung 	.dom_sa_cmpofs = offsetof(struct sockaddr_in6, sin6_addr),
    376       1.77    dyoung 	.dom_sa_cmplen = sizeof(struct in6_addr),
    377       1.79    dyoung 	.dom_sa_any = (const struct sockaddr *)&in6_any,
    378       1.87    dyoung 	.dom_sockaddr_externalize = sockaddr_in6_externalize,
    379       1.77    dyoung 	.dom_rtcache = LIST_HEAD_INITIALIZER(inet6domain.dom_rtcache)
    380       1.66  christos };
    381        1.2    itojun 
    382       1.86    dyoung #if 0
    383       1.76    dyoung int
    384       1.76    dyoung sockaddr_in6_cmp(const struct sockaddr *lsa, const struct sockaddr *rsa)
    385       1.76    dyoung {
    386       1.76    dyoung 	uint_fast8_t len;
    387       1.76    dyoung 	const uint_fast8_t addrofs = offsetof(struct sockaddr_in6, sin6_addr),
    388       1.76    dyoung 			   addrend = addrofs + sizeof(struct in6_addr);
    389       1.76    dyoung 	int rc;
    390       1.76    dyoung 	const struct sockaddr_in6 *lsin6, *rsin6;
    391       1.76    dyoung 
    392       1.76    dyoung 	lsin6 = satocsin6(lsa);
    393       1.76    dyoung 	rsin6 = satocsin6(rsa);
    394       1.76    dyoung 
    395       1.76    dyoung 	len = MIN(addrend, MIN(lsin6->sin6_len, rsin6->sin6_len));
    396       1.76    dyoung 
    397       1.76    dyoung 	if (len > addrofs &&
    398       1.76    dyoung 	    (rc = memcmp(&lsin6->sin6_addr, &rsin6->sin6_addr,
    399       1.76    dyoung 	                  len - addrofs)) != 0)
    400       1.76    dyoung 		return rc;
    401       1.76    dyoung 
    402       1.76    dyoung 	return lsin6->sin6_len - rsin6->sin6_len;
    403       1.76    dyoung }
    404       1.86    dyoung #endif
    405       1.76    dyoung 
    406        1.2    itojun /*
    407        1.2    itojun  * Internet configuration info
    408        1.2    itojun  */
    409        1.2    itojun #ifndef	IPV6FORWARDING
    410        1.2    itojun #ifdef GATEWAY6
    411        1.2    itojun #define	IPV6FORWARDING	1	/* forward IP6 packets not for us */
    412        1.2    itojun #else
    413        1.2    itojun #define	IPV6FORWARDING	0	/* don't forward IP6 packets not for us */
    414        1.2    itojun #endif /* GATEWAY6 */
    415        1.2    itojun #endif /* !IPV6FORWARDING */
    416        1.2    itojun 
    417        1.2    itojun int	ip6_forwarding = IPV6FORWARDING;	/* act as router? */
    418       1.48    itojun int	ip6_sendredirects = 1;
    419        1.2    itojun int	ip6_defhlim = IPV6_DEFHLIM;
    420        1.2    itojun int	ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
    421        1.2    itojun int	ip6_accept_rtadv = 0;	/* "IPV6FORWARDING ? 0 : 1" is dangerous */
    422        1.2    itojun int	ip6_maxfragpackets = 200;
    423       1.40    itojun int	ip6_maxfrags = 200;
    424        1.2    itojun int	ip6_log_interval = 5;
    425        1.2    itojun int	ip6_hdrnestlimit = 50;	/* appropriate? */
    426        1.2    itojun int	ip6_dad_count = 1;	/* DupAddrDetectionTransmits */
    427        1.2    itojun int	ip6_auto_flowlabel = 1;
    428       1.45    itojun int	ip6_use_deprecated = 1;	/* allow deprecated addr (RFC2462 5.5.4) */
    429        1.9    itojun int	ip6_rr_prune = 5;	/* router renumbering prefix
    430       1.38    itojun 				 * walk list every 5 sec. */
    431       1.62    rpaulo int	ip6_mcast_pmtu = 0;	/* enable pMTU discovery for multicast? */
    432       1.55    briggs int	ip6_v6only = 1;
    433       1.97  christos int     ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */
    434       1.97  christos int     ip6_maxifprefixes = 16; /* Max acceptable prefixes via RA per IF */
    435       1.97  christos int     ip6_maxifdefrouters = 16; /* Max acceptable def routers via RA */
    436       1.97  christos int     ip6_maxdynroutes = 4096; /* Max # of routes created via redirect */
    437       1.11    itojun 
    438        1.2    itojun int	ip6_keepfaith = 0;
    439       1.95  christos time_t	ip6_log_time = 0;
    440       1.92       spz int	ip6_rtadv_maxroutes = 100; /* (arbitrary) initial maximum number of
    441       1.92       spz                                     * routes via rtadv expected to be
    442       1.92       spz                                     * significantly larger than common use.
    443       1.92       spz                                     * if you need to count: 3 extra initial
    444       1.92       spz                                     * routes, plus 1 per interface after the
    445       1.92       spz                                     * first one, then one per non-linklocal
    446       1.92       spz                                     * prefix */
    447        1.2    itojun 
    448        1.2    itojun /* icmp6 */
    449        1.9    itojun /*
    450        1.9    itojun  * BSDI4 defines these variables in in_proto.c...
    451        1.9    itojun  * XXX: what if we don't define INET? Should we define pmtu6_expire
    452        1.9    itojun  * or so? (jinmei (at) kame.net 19990310)
    453        1.9    itojun  */
    454        1.2    itojun int pmtu_expire = 60*10;
    455        1.2    itojun 
    456        1.2    itojun /* raw IP6 parameters */
    457        1.2    itojun /*
    458        1.2    itojun  * Nominal space allocated to a raw ip socket.
    459        1.2    itojun  */
    460        1.2    itojun #define	RIPV6SNDQ	8192
    461        1.2    itojun #define	RIPV6RCVQ	8192
    462        1.2    itojun 
    463        1.2    itojun u_long	rip6_sendspace = RIPV6SNDQ;
    464        1.2    itojun u_long	rip6_recvspace = RIPV6RCVQ;
    465        1.2    itojun 
    466        1.2    itojun /* ICMPV6 parameters */
    467        1.2    itojun int	icmp6_rediraccept = 1;		/* accept and process redirects */
    468        1.2    itojun int	icmp6_redirtimeout = 10 * 60;	/* 10 minutes */
    469       1.18    itojun int	icmp6errppslim = 100;		/* 100pps */
    470       1.10    itojun int	icmp6_nodeinfo = 1;		/* enable/disable NI response */
    471