/* $OpenBSD: in6_proto.c,v 1.119 2024/08/20 07:46:27 mvs 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "gif.h" #if NGIF > 0 #include #endif #include "carp.h" #if NCARP > 0 #include #endif #include "pf.h" #if NPF > 0 #include #endif #include "etherip.h" #if NETHERIP > 0 #include #endif #include "gre.h" #if NGRE > 0 #include #endif /* * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. */ u_char ip6_protox[IPPROTO_MAX]; const struct protosw inet6sw[] = { { .pr_domain = &inet6domain, .pr_protocol = IPPROTO_IPV6, .pr_init = ip6_init, .pr_slowtimo = frag6_slowtimo, .pr_sysctl = ip6_sysctl }, { .pr_type = SOCK_DGRAM, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_UDP, .pr_flags = PR_ATOMIC|PR_ADDR|PR_SPLICE|PR_MPINPUT|PR_MPSOCKET, .pr_input = udp_input, .pr_ctlinput = udp6_ctlinput, .pr_ctloutput = ip6_ctloutput, .pr_usrreqs = &udp6_usrreqs, .pr_sysctl = udp_sysctl }, { .pr_type = SOCK_STREAM, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_TCP, .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_ABRTACPTDIS|PR_SPLICE, .pr_input = tcp_input, .pr_ctlinput = tcp6_ctlinput, .pr_ctloutput = tcp_ctloutput, .pr_usrreqs = &tcp6_usrreqs, .pr_sysctl = tcp_sysctl }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_RAW, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPINPUT|PR_MPSOCKET|PR_MPSYSCTL, .pr_input = rip6_input, .pr_ctlinput = rip6_ctlinput, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_sysctl = rip6_sysctl }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_ICMPV6, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = icmp6_input, .pr_ctlinput = rip6_ctlinput, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_init = icmp6_init, .pr_fasttimo = icmp6_fasttimo, .pr_sysctl = icmp6_sysctl }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_DSTOPTS, .pr_flags = PR_ATOMIC|PR_ADDR, .pr_input = dest6_input }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_ROUTING, .pr_flags = PR_ATOMIC|PR_ADDR, .pr_input = route6_input }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_FRAGMENT, .pr_flags = PR_ATOMIC|PR_ADDR, .pr_input = frag6_input }, #ifdef IPSEC { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_AH, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = ah46_input, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_sysctl = ah_sysctl }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_ESP, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = esp46_input, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_sysctl = esp_sysctl }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_IPCOMP, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = ipcomp46_input, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_sysctl = ipcomp_sysctl }, #endif /* IPSEC */ { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_IPV4, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, #if NGIF > 0 .pr_input = in6_gif_input, #else .pr_input = ipip_input, #endif .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, /* XXX */ }, { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_IPV6, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, #if NGIF > 0 .pr_input = in6_gif_input, #else .pr_input = ipip_input, #endif .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, /* XXX */ }, #if defined(MPLS) && NGIF > 0 { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_MPLS, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, #if NGIF > 0 .pr_input = in6_gif_input, #else .pr_input = ipip_input, #endif .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, /* XXX */ }, #endif /* MPLS */ #if NCARP > 0 { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_CARP, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = carp6_proto_input, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_sysctl = carp_sysctl }, #endif /* NCARP */ #if NPF > 0 { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_DIVERT, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET|PR_MPSYSCTL, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &divert6_usrreqs, .pr_init = divert6_init, .pr_sysctl = divert6_sysctl }, #endif /* NPF > 0 */ #if NETHERIP > 0 { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_ETHERIP, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = ip6_etherip_input, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, }, #endif /* NETHERIP */ #if NGRE > 0 { .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_protocol = IPPROTO_GRE, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSOCKET, .pr_input = gre_input6, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, }, #endif /* NGRE */ { /* raw wildcard */ .pr_type = SOCK_RAW, .pr_domain = &inet6domain, .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPINPUT|PR_MPSOCKET, .pr_input = rip6_input, .pr_ctloutput = rip6_ctloutput, .pr_usrreqs = &rip6_usrreqs, .pr_init = rip6_init } }; const struct domain inet6domain = { .dom_family = AF_INET6, .dom_name = "inet6", .dom_protosw = inet6sw, .dom_protoswNPROTOSW = &inet6sw[nitems(inet6sw)], .dom_sasize = sizeof(struct sockaddr_in6), .dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr), .dom_maxplen = 128, }; /* * Internet configuration info */ int ip6_forwarding = 0; /* [a] no forwarding unless sysctl to enable */ int ip6_mforwarding = 0; /* no multicast forwarding unless ... */ int ip6_multipath = 0; /* no using multipath routes unless ... */ int ip6_sendredirects = 1; /* [a] */ int ip6_defhlim = IPV6_DEFHLIM; int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; 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_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */ int ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */ 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_redirtimeout = 10 * 60; /* 10 minutes */ int icmp6errppslim = 100; /* 100pps */ int ip6_mtudisc_timeout = IPMTUDISCTIMEOUT;