Home | History | Annotate | Line # | Download | only in netinet6
in6_proto.c revision 1.106
      1  1.106     pooka /*	$NetBSD: in6_proto.c,v 1.106 2015/08/24 22:21:27 pooka 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  1.106     pooka __KERNEL_RCSID(0, "$NetBSD: in6_proto.c,v 1.106 2015/08/24 22:21:27 pooka Exp $");
     66    1.2    itojun 
     67  1.106     pooka #ifdef _KERNEL_OPT
     68   1.88     joerg #include "opt_gateway.h"
     69    1.2    itojun #include "opt_inet.h"
     70    1.4   thorpej #include "opt_ipsec.h"
     71  1.104       rjs #include "opt_dccp.h"
     72  1.106     pooka #endif
     73    1.2    itojun 
     74    1.2    itojun #include <sys/param.h>
     75    1.2    itojun #include <sys/socket.h>
     76    1.2    itojun #include <sys/protosw.h>
     77    1.2    itojun #include <sys/kernel.h>
     78    1.2    itojun #include <sys/domain.h>
     79    1.2    itojun #include <sys/mbuf.h>
     80    1.2    itojun 
     81    1.2    itojun #include <net/if.h>
     82    1.2    itojun #include <net/radix.h>
     83    1.2    itojun #include <net/route.h>
     84    1.2    itojun 
     85    1.2    itojun #include <netinet/in.h>
     86    1.2    itojun #include <netinet/in_systm.h>
     87    1.2    itojun #include <netinet/in_var.h>
     88   1.17    itojun #include <netinet/ip_encap.h>
     89    1.2    itojun #include <netinet/ip.h>
     90    1.2    itojun #include <netinet/ip_var.h>
     91    1.2    itojun #include <netinet/in_pcb.h>
     92   1.13    itojun #include <netinet/ip6.h>
     93    1.2    itojun #include <netinet6/ip6_var.h>
     94   1.13    itojun #include <netinet/icmp6.h>
     95    1.2    itojun #include <netinet6/in6_pcb.h>
     96    1.2    itojun 
     97    1.2    itojun #include <netinet/tcp.h>
     98    1.2    itojun #include <netinet/tcp_fsm.h>
     99    1.2    itojun #include <netinet/tcp_seq.h>
    100    1.2    itojun #include <netinet/tcp_timer.h>
    101    1.2    itojun #include <netinet/tcp_var.h>
    102    1.2    itojun #include <netinet/tcpip.h>
    103    1.2    itojun #include <netinet/tcp_debug.h>
    104    1.2    itojun 
    105    1.2    itojun #include <netinet6/udp6.h>
    106    1.2    itojun #include <netinet6/udp6_var.h>
    107    1.2    itojun 
    108  1.104       rjs #ifdef DCCP
    109  1.104       rjs #include <netinet/dccp.h>
    110  1.104       rjs #include <netinet/dccp_var.h>
    111  1.104       rjs #include <netinet6/dccp6_var.h>
    112  1.104       rjs #endif
    113  1.104       rjs 
    114    1.2    itojun #include <netinet6/pim6_var.h>
    115    1.2    itojun 
    116    1.2    itojun #include <netinet6/nd6.h>
    117    1.2    itojun 
    118   1.99  christos #ifdef IPSEC
    119   1.70  degroote #include <netipsec/ipsec.h>
    120   1.70  degroote #include <netipsec/ipsec6.h>
    121   1.70  degroote #include <netipsec/key.h>
    122   1.99  christos #endif /* IPSEC */
    123   1.70  degroote 
    124   1.70  degroote 
    125   1.63  liamjfoy #include "carp.h"
    126   1.63  liamjfoy #if NCARP > 0
    127   1.63  liamjfoy #include <netinet/ip_carp.h>
    128   1.63  liamjfoy #endif
    129   1.63  liamjfoy 
    130   1.68    rpaulo #include "etherip.h"
    131   1.89  jakllsch #if NETHERIP > 0
    132   1.68    rpaulo #include <netinet6/ip6_etherip.h>
    133   1.68    rpaulo #endif
    134   1.68    rpaulo 
    135    1.2    itojun #include <netinet6/ip6protosw.h>
    136    1.2    itojun 
    137   1.35    itojun #include <net/net_osdep.h>
    138   1.35    itojun 
    139    1.2    itojun /*
    140    1.2    itojun  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
    141    1.2    itojun  */
    142    1.2    itojun 
    143   1.58      matt DOMAIN_DEFINE(inet6domain);	/* forward declare and add to link set */
    144    1.2    itojun 
    145   1.82        ad /* Wrappers to acquire kernel_lock. */
    146   1.82        ad 
    147   1.82        ad PR_WRAP_CTLINPUT(rip6_ctlinput)
    148   1.82        ad PR_WRAP_CTLINPUT(encap6_ctlinput)
    149   1.82        ad PR_WRAP_CTLINPUT(udp6_ctlinput)
    150   1.82        ad PR_WRAP_CTLINPUT(tcp6_ctlinput)
    151   1.82        ad 
    152   1.82        ad #define	rip6_ctlinput	rip6_ctlinput_wrapper
    153   1.82        ad #define	encap6_ctlinput	encap6_ctlinput_wrapper
    154   1.82        ad #define	udp6_ctlinput	udp6_ctlinput_wrapper
    155   1.82        ad #define	tcp6_ctlinput	tcp6_ctlinput_wrapper
    156   1.82        ad 
    157   1.82        ad PR_WRAP_CTLOUTPUT(rip6_ctloutput)
    158   1.82        ad PR_WRAP_CTLOUTPUT(tcp_ctloutput)
    159   1.93  christos PR_WRAP_CTLOUTPUT(udp6_ctloutput)
    160   1.82        ad PR_WRAP_CTLOUTPUT(icmp6_ctloutput)
    161   1.82        ad 
    162   1.82        ad #define	rip6_ctloutput	rip6_ctloutput_wrapper
    163   1.82        ad #define	tcp_ctloutput	tcp_ctloutput_wrapper
    164   1.93  christos #define	udp6_ctloutput	udp6_ctloutput_wrapper
    165   1.82        ad #define	icmp6_ctloutput	icmp6_ctloutput_wrapper
    166   1.82        ad 
    167  1.104       rjs #if defined(DCCP)
    168  1.104       rjs PR_WRAP_CTLINPUT(dccp6_ctlinput)
    169  1.104       rjs PR_WRAP_CTLOUTPUT(dccp_ctloutput)
    170  1.104       rjs 
    171  1.104       rjs #define dccp6_ctlinput	dccp6_ctlinput_wrapper
    172  1.104       rjs #define dccp_ctloutput	dccp_ctloutput_wrapper
    173  1.104       rjs #endif
    174  1.104       rjs 
    175   1.99  christos #if defined(IPSEC)
    176   1.82        ad PR_WRAP_CTLINPUT(ah6_ctlinput)
    177   1.85   tsutsui 
    178   1.85   tsutsui #define	ah6_ctlinput	ah6_ctlinput_wrapper
    179   1.85   tsutsui #endif
    180   1.85   tsutsui 
    181   1.99  christos #if defined(IPSEC)
    182   1.82        ad PR_WRAP_CTLINPUT(esp6_ctlinput)
    183   1.82        ad 
    184   1.82        ad #define	esp6_ctlinput	esp6_ctlinput_wrapper
    185   1.82        ad #endif
    186   1.82        ad 
    187  1.100     pooka static void
    188  1.100     pooka tcp6_init(void)
    189  1.100     pooka {
    190  1.100     pooka 
    191  1.100     pooka 	icmp6_mtudisc_callback_register(tcp6_mtudisc_callback);
    192  1.100     pooka 
    193  1.100     pooka 	tcp_init_common(sizeof(struct ip6_hdr));
    194  1.100     pooka }
    195  1.100     pooka 
    196   1.57      matt const struct ip6protosw inet6sw[] = {
    197   1.74  liamjfoy {	.pr_domain = &inet6domain,
    198   1.74  liamjfoy 	.pr_protocol = IPPROTO_IPV6,
    199   1.74  liamjfoy 	.pr_init = ip6_init,
    200   1.91    dyoung 	.pr_fasttimo = frag6_fasttimo,
    201   1.74  liamjfoy 	.pr_slowtimo = frag6_slowtimo,
    202   1.91    dyoung 	.pr_drain = frag6_drainstub,
    203   1.74  liamjfoy },
    204   1.74  liamjfoy {	.pr_type = SOCK_DGRAM,
    205   1.74  liamjfoy 	.pr_domain = &inet6domain,
    206   1.74  liamjfoy 	.pr_protocol = IPPROTO_UDP,
    207   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF,
    208   1.74  liamjfoy 	.pr_input = udp6_input,
    209   1.74  liamjfoy 	.pr_ctlinput = udp6_ctlinput,
    210   1.93  christos 	.pr_ctloutput = udp6_ctloutput,
    211  1.101     rmind 	.pr_usrreqs = &udp6_usrreqs,
    212   1.74  liamjfoy 	.pr_init = udp6_init,
    213   1.74  liamjfoy },
    214   1.74  liamjfoy {	.pr_type = SOCK_STREAM,
    215   1.74  liamjfoy 	.pr_domain = &inet6domain,
    216   1.74  liamjfoy 	.pr_protocol = IPPROTO_TCP,
    217   1.74  liamjfoy 	.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS|PR_PURGEIF,
    218   1.74  liamjfoy 	.pr_input = tcp6_input,
    219   1.74  liamjfoy 	.pr_ctlinput = tcp6_ctlinput,
    220   1.74  liamjfoy 	.pr_ctloutput = tcp_ctloutput,
    221  1.101     rmind 	.pr_usrreqs = &tcp_usrreqs,
    222  1.100     pooka 	.pr_init = tcp6_init,
    223   1.91    dyoung 	.pr_fasttimo = tcp_fasttimo,
    224   1.91    dyoung 	.pr_drain = tcp_drainstub,
    225    1.2    itojun },
    226  1.104       rjs #ifdef DCCP
    227  1.104       rjs {	.pr_type = SOCK_CONN_DGRAM,
    228  1.104       rjs 	.pr_domain = &inet6domain,
    229  1.104       rjs 	.pr_protocol = IPPROTO_DCCP,
    230  1.104       rjs 	.pr_flags = PR_CONNREQUIRED|PR_ATOMIC|PR_LISTEN,
    231  1.104       rjs 	.pr_input = dccp6_input,
    232  1.104       rjs 	.pr_ctlinput = dccp6_ctlinput,
    233  1.104       rjs 	.pr_ctloutput = dccp_ctloutput,
    234  1.104       rjs 	.pr_usrreqs = &dccp6_usrreqs,
    235  1.104       rjs #ifndef INET
    236  1.104       rjs 	.pr_init = dccp_init,
    237  1.104       rjs #endif
    238  1.104       rjs },
    239  1.104       rjs #endif /* DCCP */
    240   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    241   1.74  liamjfoy 	.pr_domain = &inet6domain,
    242   1.74  liamjfoy 	.pr_protocol = IPPROTO_RAW,
    243   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF,
    244   1.74  liamjfoy 	.pr_input = rip6_input,
    245   1.74  liamjfoy 	.pr_output = rip6_output,
    246   1.74  liamjfoy 	.pr_ctlinput = rip6_ctlinput,
    247   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    248  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    249   1.74  liamjfoy },
    250   1.75  liamjfoy #ifdef GATEWAY
    251   1.75  liamjfoy {	.pr_domain = &inet6domain,
    252   1.75  liamjfoy 	.pr_protocol = IPPROTO_IPV6,
    253   1.75  liamjfoy 	.pr_slowtimo = ip6flow_slowtimo,
    254   1.84  liamjfoy 	.pr_init = ip6flow_poolinit,
    255   1.75  liamjfoy },
    256   1.75  liamjfoy #endif /* GATEWAY */
    257   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    258   1.74  liamjfoy 	.pr_domain = &inet6domain,
    259   1.74  liamjfoy 	.pr_protocol = IPPROTO_ICMPV6,
    260   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    261   1.74  liamjfoy 	.pr_input = icmp6_input,
    262   1.74  liamjfoy 	.pr_output = rip6_output,
    263   1.74  liamjfoy 	.pr_ctlinput = rip6_ctlinput,
    264   1.79    dyoung 	.pr_ctloutput = icmp6_ctloutput,
    265  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    266   1.74  liamjfoy 	.pr_init = icmp6_init,
    267   1.74  liamjfoy },
    268   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    269   1.74  liamjfoy 	.pr_domain = &inet6domain,
    270   1.74  liamjfoy 	.pr_protocol = IPPROTO_DSTOPTS,
    271   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    272   1.74  liamjfoy 	.pr_input = dest6_input,
    273   1.74  liamjfoy },
    274   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    275   1.74  liamjfoy 	.pr_domain = &inet6domain,
    276   1.74  liamjfoy 	.pr_protocol = IPPROTO_ROUTING,
    277   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    278   1.74  liamjfoy 	.pr_input = route6_input,
    279   1.74  liamjfoy },
    280   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    281   1.74  liamjfoy 	.pr_domain = &inet6domain,
    282   1.74  liamjfoy 	.pr_protocol = IPPROTO_FRAGMENT,
    283   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    284   1.74  liamjfoy 	.pr_input = frag6_input,
    285    1.2    itojun },
    286   1.99  christos #ifdef IPSEC
    287   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    288   1.74  liamjfoy 	.pr_domain = &inet6domain,
    289   1.74  liamjfoy 	.pr_protocol = IPPROTO_AH,
    290   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    291   1.74  liamjfoy 	.pr_input = ipsec6_common_input,
    292   1.74  liamjfoy 	.pr_ctlinput = ah6_ctlinput,
    293   1.74  liamjfoy },
    294   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    295   1.74  liamjfoy 	.pr_domain = &inet6domain,
    296   1.74  liamjfoy 	.pr_protocol = IPPROTO_ESP,
    297   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    298   1.74  liamjfoy 	.pr_input = ipsec6_common_input,
    299   1.74  liamjfoy 	.pr_ctlinput = esp6_ctlinput,
    300   1.74  liamjfoy },
    301   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    302   1.74  liamjfoy 	.pr_domain = &inet6domain,
    303   1.74  liamjfoy 	.pr_protocol = IPPROTO_IPCOMP,
    304   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    305   1.74  liamjfoy 	.pr_input = ipsec6_common_input,
    306   1.70  degroote },
    307   1.99  christos #endif /* IPSEC */
    308   1.17    itojun #ifdef INET
    309   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    310   1.74  liamjfoy 	.pr_domain = &inet6domain,
    311   1.74  liamjfoy 	.pr_protocol = IPPROTO_IPV4,
    312   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    313   1.74  liamjfoy 	.pr_input = encap6_input,
    314   1.74  liamjfoy 	.pr_output = rip6_output,
    315   1.74  liamjfoy 	.pr_ctlinput = encap6_ctlinput,
    316   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    317  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    318   1.74  liamjfoy 	.pr_init = encap_init,
    319    1.2    itojun },
    320   1.17    itojun #endif
    321   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    322   1.74  liamjfoy 	.pr_domain = &inet6domain,
    323   1.74  liamjfoy 	.pr_protocol = IPPROTO_IPV6,
    324   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    325   1.74  liamjfoy 	.pr_input = encap6_input,
    326   1.74  liamjfoy 	.pr_output = rip6_output,
    327   1.74  liamjfoy 	.pr_ctlinput = encap6_ctlinput,
    328   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    329  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    330   1.74  liamjfoy 	.pr_init = encap_init,
    331    1.2    itojun },
    332   1.89  jakllsch #if NETHERIP > 0
    333   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    334   1.74  liamjfoy 	.pr_domain = &inet6domain,
    335   1.74  liamjfoy 	.pr_protocol = IPPROTO_ETHERIP,
    336   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    337   1.74  liamjfoy 	.pr_input = ip6_etherip_input,
    338   1.74  liamjfoy 	.pr_output = rip6_output,
    339   1.74  liamjfoy 	.pr_ctlinput = rip6_ctlinput,
    340   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    341  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    342   1.68    rpaulo },
    343   1.68    rpaulo #endif
    344   1.63  liamjfoy #if NCARP > 0
    345   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    346   1.74  liamjfoy 	.pr_domain = &inet6domain,
    347   1.74  liamjfoy 	.pr_protocol = IPPROTO_CARP,
    348   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR,
    349   1.74  liamjfoy 	.pr_input = carp6_proto_input,
    350   1.74  liamjfoy 	.pr_output = rip6_output,
    351   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    352  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    353   1.63  liamjfoy },
    354   1.63  liamjfoy #endif /* NCARP */
    355   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    356   1.74  liamjfoy 	.pr_domain = &inet6domain,
    357   1.74  liamjfoy 	.pr_protocol = IPPROTO_PIM,
    358   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    359   1.74  liamjfoy 	.pr_input = pim6_input,
    360   1.74  liamjfoy 	.pr_output = rip6_output,
    361   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    362  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    363   1.80   thorpej 	.pr_init = pim6_init,
    364    1.2    itojun },
    365    1.2    itojun /* raw wildcard */
    366   1.74  liamjfoy {	.pr_type = SOCK_RAW,
    367   1.74  liamjfoy 	.pr_domain = &inet6domain,
    368   1.74  liamjfoy 	.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
    369   1.74  liamjfoy 	.pr_input = rip6_input,
    370   1.74  liamjfoy 	.pr_output = rip6_output,
    371   1.74  liamjfoy 	.pr_ctloutput = rip6_ctloutput,
    372  1.101     rmind 	.pr_usrreqs = &rip6_usrreqs,
    373   1.74  liamjfoy 	.pr_init = rip6_init,
    374    1.2    itojun },
    375    1.2    itojun };
    376   1.17    itojun 
    377   1.79    dyoung static const struct sockaddr_in6 in6_any = {
    378   1.79    dyoung 	  .sin6_len = sizeof(in6_any)
    379   1.79    dyoung 	, .sin6_family = AF_INET6
    380   1.79    dyoung 	, .sin6_port = 0
    381   1.79    dyoung 	, .sin6_flowinfo = 0
    382   1.79    dyoung 	, .sin6_addr = IN6ADDR_ANY_INIT
    383   1.79    dyoung 	, .sin6_scope_id = 0
    384   1.79    dyoung };
    385   1.79    dyoung 
    386  1.100     pooka bool in6_present = false;
    387  1.100     pooka static void
    388  1.100     pooka in6_init(void)
    389  1.100     pooka {
    390  1.100     pooka 
    391  1.100     pooka 	in6_present = true;
    392  1.100     pooka }
    393  1.100     pooka 
    394   1.66  christos struct domain inet6domain = {
    395   1.69    dyoung 	.dom_family = AF_INET6, .dom_name = "internet6",
    396  1.100     pooka 	.dom_init = in6_init, .dom_externalize = NULL, .dom_dispose = NULL,
    397   1.69    dyoung 	.dom_protosw = (const struct protosw *)inet6sw,
    398   1.69    dyoung 	.dom_protoswNPROTOSW = (const struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
    399   1.90    dyoung 	.dom_rtattach = rt_inithead,
    400   1.69    dyoung 	.dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3,
    401   1.83     pooka 	.dom_maxrtkey = sizeof(struct ip_pack6),
    402  1.105       roy 	.dom_if_up = in6_if_up, .dom_if_down = in6_if_down,
    403   1.69    dyoung 	.dom_ifattach = in6_domifattach, .dom_ifdetach = in6_domifdetach,
    404  1.105       roy 	.dom_if_link_state_change = in6_if_link_state_change,
    405  1.103     rmind 	.dom_ifqueues = { NULL, NULL },
    406   1.69    dyoung 	.dom_link = { NULL },
    407   1.76    dyoung 	.dom_mowner = MOWNER_INIT("",""),
    408   1.77    dyoung 	.dom_sa_cmpofs = offsetof(struct sockaddr_in6, sin6_addr),
    409   1.77    dyoung 	.dom_sa_cmplen = sizeof(struct in6_addr),
    410   1.79    dyoung 	.dom_sa_any = (const struct sockaddr *)&in6_any,
    411   1.87    dyoung 	.dom_sockaddr_externalize = sockaddr_in6_externalize,
    412   1.77    dyoung 	.dom_rtcache = LIST_HEAD_INITIALIZER(inet6domain.dom_rtcache)
    413   1.66  christos };
    414    1.2    itojun 
    415   1.86    dyoung #if 0
    416   1.76    dyoung int
    417   1.76    dyoung sockaddr_in6_cmp(const struct sockaddr *lsa, const struct sockaddr *rsa)
    418   1.76    dyoung {
    419   1.76    dyoung 	uint_fast8_t len;
    420   1.76    dyoung 	const uint_fast8_t addrofs = offsetof(struct sockaddr_in6, sin6_addr),
    421   1.76    dyoung 			   addrend = addrofs + sizeof(struct in6_addr);
    422   1.76    dyoung 	int rc;
    423   1.76    dyoung 	const struct sockaddr_in6 *lsin6, *rsin6;
    424   1.76    dyoung 
    425   1.76    dyoung 	lsin6 = satocsin6(lsa);
    426   1.76    dyoung 	rsin6 = satocsin6(rsa);
    427   1.76    dyoung 
    428   1.76    dyoung 	len = MIN(addrend, MIN(lsin6->sin6_len, rsin6->sin6_len));
    429   1.76    dyoung 
    430   1.76    dyoung 	if (len > addrofs &&
    431   1.76    dyoung 	    (rc = memcmp(&lsin6->sin6_addr, &rsin6->sin6_addr,
    432   1.76    dyoung 	                  len - addrofs)) != 0)
    433   1.76    dyoung 		return rc;
    434   1.76    dyoung 
    435   1.76    dyoung 	return lsin6->sin6_len - rsin6->sin6_len;
    436   1.76    dyoung }
    437   1.86    dyoung #endif
    438   1.76    dyoung 
    439    1.2    itojun /*
    440    1.2    itojun  * Internet configuration info
    441    1.2    itojun  */
    442    1.2    itojun #ifndef	IPV6FORWARDING
    443    1.2    itojun #ifdef GATEWAY6
    444    1.2    itojun #define	IPV6FORWARDING	1	/* forward IP6 packets not for us */
    445    1.2    itojun #else
    446    1.2    itojun #define	IPV6FORWARDING	0	/* don't forward IP6 packets not for us */
    447    1.2    itojun #endif /* GATEWAY6 */
    448    1.2    itojun #endif /* !IPV6FORWARDING */
    449    1.2    itojun 
    450    1.2    itojun int	ip6_forwarding = IPV6FORWARDING;	/* act as router? */
    451   1.48    itojun int	ip6_sendredirects = 1;
    452    1.2    itojun int	ip6_defhlim = IPV6_DEFHLIM;
    453    1.2    itojun int	ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
    454    1.2    itojun int	ip6_accept_rtadv = 0;	/* "IPV6FORWARDING ? 0 : 1" is dangerous */
    455    1.2    itojun int	ip6_maxfragpackets = 200;
    456   1.40    itojun int	ip6_maxfrags = 200;
    457    1.2    itojun int	ip6_log_interval = 5;
    458    1.2    itojun int	ip6_hdrnestlimit = 50;	/* appropriate? */
    459    1.2    itojun int	ip6_dad_count = 1;	/* DupAddrDetectionTransmits */
    460    1.2    itojun int	ip6_auto_flowlabel = 1;
    461   1.45    itojun int	ip6_use_deprecated = 1;	/* allow deprecated addr (RFC2462 5.5.4) */
    462    1.9    itojun int	ip6_rr_prune = 5;	/* router renumbering prefix
    463   1.38    itojun 				 * walk list every 5 sec. */
    464   1.62    rpaulo int	ip6_mcast_pmtu = 0;	/* enable pMTU discovery for multicast? */
    465   1.55    briggs int	ip6_v6only = 1;
    466   1.97  christos int     ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */
    467   1.97  christos int     ip6_maxifprefixes = 16; /* Max acceptable prefixes via RA per IF */
    468   1.97  christos int     ip6_maxifdefrouters = 16; /* Max acceptable def routers via RA */
    469   1.97  christos int     ip6_maxdynroutes = 4096; /* Max # of routes created via redirect */
    470   1.11    itojun 
    471    1.2    itojun int	ip6_keepfaith = 0;
    472   1.95  christos time_t	ip6_log_time = 0;
    473   1.92       spz int	ip6_rtadv_maxroutes = 100; /* (arbitrary) initial maximum number of
    474   1.92       spz                                     * routes via rtadv expected to be
    475   1.92       spz                                     * significantly larger than common use.
    476   1.92       spz                                     * if you need to count: 3 extra initial
    477   1.92       spz                                     * routes, plus 1 per interface after the
    478   1.92       spz                                     * first one, then one per non-linklocal
    479   1.92       spz                                     * prefix */
    480    1.2    itojun 
    481    1.2    itojun /* icmp6 */
    482    1.9    itojun /*
    483    1.9    itojun  * BSDI4 defines these variables in in_proto.c...
    484    1.9    itojun  * XXX: what if we don't define INET? Should we define pmtu6_expire
    485    1.9    itojun  * or so? (jinmei (at) kame.net 19990310)
    486    1.9    itojun  */
    487    1.2    itojun int pmtu_expire = 60*10;
    488    1.2    itojun 
    489    1.2    itojun /* raw IP6 parameters */
    490    1.2    itojun /*
    491    1.2    itojun  * Nominal space allocated to a raw ip socket.
    492    1.2    itojun  */
    493    1.2    itojun #define	RIPV6SNDQ	8192
    494    1.2    itojun #define	RIPV6RCVQ	8192
    495    1.2    itojun 
    496    1.2    itojun u_long	rip6_sendspace = RIPV6SNDQ;
    497    1.2    itojun u_long	rip6_recvspace = RIPV6RCVQ;
    498    1.2    itojun 
    499    1.2    itojun /* ICMPV6 parameters */
    500    1.2    itojun int	icmp6_rediraccept = 1;		/* accept and process redirects */
    501    1.2    itojun int	icmp6_redirtimeout = 10 * 60;	/* 10 minutes */
    502   1.18    itojun int	icmp6errppslim = 100;		/* 100pps */
    503   1.10    itojun int	icmp6_nodeinfo = 1;		/* enable/disable NI response */
    504