/* $OpenBSD: in6_proto.c,v 1.70 2014/07/09 08:07:53 benno Exp $ */ /* $KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)in_proto.c 8.1 (Berkeley) 6/10/93 */ #include #include #include #include #include #include #include #include #ifndef SMALL_KERNEL #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef MROUTING #include #endif #include #include #include #include "gif.h" #if NGIF > 0 #include #include #endif #include "carp.h" #if NCARP > 0 #include #endif #include "pf.h" #if NPF > 0 #include #endif /* * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. */ u_char ip6_protox[IPPROTO_MAX]; struct ip6protosw inet6sw[] = { { 0, &inet6domain, IPPROTO_IPV6, 0, 0, 0, 0, 0, 0, ip6_init, 0, frag6_slowtimo, frag6_drain, ip6_sysctl, }, { SOCK_DGRAM, &inet6domain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR|PR_SPLICE, udp6_input, 0, udp6_ctlinput, ip6_ctloutput, udp_usrreq, 0, 0, 0, 0, udp_sysctl, }, { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_ABRTACPTDIS|PR_SPLICE, tcp6_input, 0, tcp6_ctlinput, tcp_ctloutput, tcp_usrreq, #ifdef INET /* don't call initialization and timeout routines twice */ 0, 0, 0, 0, #else tcp_init, tcp_fasttimo, tcp_slowtimo, 0, #endif tcp_sysctl, }, { SOCK_RAW, &inet6domain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, rip6_input, rip6_output, rip6_ctlinput, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, rip6_sysctl }, { SOCK_RAW, &inet6domain, IPPROTO_ICMPV6, PR_ATOMIC|PR_ADDR, icmp6_input, rip6_output, rip6_ctlinput, rip6_ctloutput, rip6_usrreq, icmp6_init, icmp6_fasttimo, 0, 0, icmp6_sysctl, }, { SOCK_RAW, &inet6domain, IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR, dest6_input, 0, 0, 0, 0, 0, 0, 0, 0, }, { SOCK_RAW, &inet6domain, IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR, route6_input, 0, 0, 0, 0, 0, 0, 0, 0, }, { SOCK_RAW, &inet6domain, IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR, frag6_input, 0, 0, 0, 0, 0, 0, 0, 0, }, #ifdef IPSEC { SOCK_RAW, &inet6domain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, ah6_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, ah_sysctl, }, { SOCK_RAW, &inet6domain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, esp6_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, esp_sysctl, }, { SOCK_RAW, &inet6domain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, ipcomp6_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, ipcomp_sysctl, }, #endif /* IPSEC */ #if NGIF > 0 { SOCK_RAW, &inet6domain, IPPROTO_ETHERIP,PR_ATOMIC|PR_ADDR, etherip_input6, rip6_output, 0, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, etherip_sysctl }, { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, in6_gif_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, /* XXX */ 0, 0, 0, 0, }, #ifdef INET { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, in6_gif_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, /* XXX */ 0, 0, 0, 0, }, #endif /* INET */ #else /* NGIF */ { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, ip4_input6, rip6_output, 0, rip6_ctloutput, rip6_usrreq, /* XXX */ 0, 0, 0, 0, ipip_sysctl }, #ifdef INET { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, ip4_input6, rip6_output, 0, rip6_ctloutput, rip6_usrreq, /* XXX */ 0, 0, 0, 0, }, #endif /* INET */ #endif /* GIF */ #ifdef MROUTING { SOCK_RAW, &inet6domain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR, pim6_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, pim6_sysctl }, #endif #if NCARP > 0 { SOCK_RAW, &inet6domain, IPPROTO_CARP, PR_ATOMIC|PR_ADDR, carp6_proto_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, 0, 0, 0, 0, carp_sysctl }, #endif /* NCARP */ #if NPF > 0 { SOCK_RAW, &inet6domain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, divert6_input, 0, 0, rip6_ctloutput, divert6_usrreq, divert6_init, 0, 0, 0, divert6_sysctl }, #endif /* NPF > 0 */ /* raw wildcard */ { SOCK_RAW, &inet6domain, 0, PR_ATOMIC|PR_ADDR, rip6_input, rip6_output, 0, rip6_ctloutput, rip6_usrreq, rip6_init, 0, 0, 0, }, }; struct domain inet6domain = { AF_INET6, "internet6", 0, 0, 0, (struct protosw *)inet6sw, (struct protosw *)&inet6sw[nitems(inet6sw)], 0, #ifndef SMALL_KERNEL rn_mpath_inithead, #else rn_inithead, #endif offsetof(struct sockaddr_in6, sin6_addr) << 3, sizeof(struct sockaddr_in6), in6_domifattach, in6_domifdetach, }; /* * Internet configuration info */ int ip6_forwarding = 0; /* no forwarding unless sysctl'd to enable */ int ip6_mforwarding = 0; /* no multicast forwarding unless ... */ int ip6_multipath = 0; /* no using multipath routes unless ... */ int ip6_sendredirects = 1; int ip6_defhlim = IPV6_DEFHLIM; int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; int ip6_accept_rtadv = 0; /* enabling forwarding and rtadv concurrently is dangerous */ int ip6_maxfragpackets = 200; int ip6_maxfrags = 200; int ip6_log_interval = 5; int ip6_hdrnestlimit = 10; /* appropriate? */ int ip6_dad_count = 1; /* DupAddrDetectionTransmits */ int ip6_dad_pending; /* number of currently running DADs */ int ip6_auto_flowlabel = 1; int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */ int ip6_rr_prune = 5; /* router renumbering prefix * walk list every 5 sec. */ int ip6_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */ const int ip6_v6only = 1; int ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */ int ip6_maxifprefixes = 16; /* Max acceptable prefixes via RA per IF */ int ip6_maxifdefrouters = 16; /* Max acceptable def routers via RA */ int ip6_maxdynroutes = 4096; /* Max # of routes created via redirect */ time_t ip6_log_time = (time_t)0L; /* raw IP6 parameters */ /* * Nominal space allocated to a raw ip socket. */ #define RIPV6SNDQ 8192 #define RIPV6RCVQ 8192 u_long rip6_sendspace = RIPV6SNDQ; u_long rip6_recvspace = RIPV6RCVQ; /* ICMPV6 parameters */ int icmp6_rediraccept = 0; /* don't process redirects by default */ int icmp6_redirtimeout = 10 * 60; /* 10 minutes */ int icmp6errppslim = 100; /* 100pps */ int icmp6_nodeinfo = 0; /* enable/disable NI response */ int ip6_mtudisc_timeout = IPMTUDISCTIMEOUT;