/* * 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. * * $FreeBSD$ */ /* * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 "opt_inet.h" #include "opt_ipsec.h" #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 #include #ifdef IPSEC #include #include #include #include #ifdef IPSEC_ESP #include #include #endif #endif /*IPSEC*/ #include #include "gif.h" #if NGIF > 0 #include #endif #include #define offsetof(type, member) ((size_t)(&((type *)0)->member)) /* * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. */ extern struct domain inet6domain; static struct pr_usrreqs nousrreqs; struct ip6protosw inet6sw[] = { { 0, &inet6domain, IPPROTO_IPV6, 0, 0, 0, 0, 0, 0, ip6_init, 0, frag6_slowtimo, frag6_drain, &nousrreqs, }, { SOCK_DGRAM, &inet6domain, IPPROTO_UDP, PR_ATOMIC | PR_ADDR, udp6_input, 0, udp6_ctlinput, ip6_ctloutput, 0, 0, 0, 0, 0, &udp6_usrreqs, }, { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED | PR_WANTRCVD, tcp6_input, 0, tcp6_ctlinput, tcp_ctloutput, 0, #ifdef INET /* don't call timeout routines twice */ tcp_init, 0, 0, tcp_drain, #else tcp_init, 0, tcp_slowtimo, tcp_drain, #endif &tcp6_usrreqs, }, { SOCK_RAW, &inet6domain, IPPROTO_RAW, PR_ATOMIC | PR_ADDR, rip6_input, rip6_output, 0, rip6_ctloutput, 0, 0, 0, 0, 0, &rip6_usrreqs }, { SOCK_RAW, &inet6domain, IPPROTO_ICMPV6, PR_ATOMIC | PR_ADDR, icmp6_input, rip6_output, 0, rip6_ctloutput, 0, icmp6_init, icmp6_fasttimo, 0, 0, &rip6_usrreqs }, { SOCK_RAW, &inet6domain, IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR, dest6_input, 0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs }, { SOCK_RAW, &inet6domain, IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR, route6_input, 0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs }, { SOCK_RAW, &inet6domain, IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR, frag6_input, 0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs }, #ifdef IPSEC { SOCK_RAW, &inet6domain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, ah6_input, 0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs, }, #ifdef IPSEC_ESP { SOCK_RAW, &inet6domain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, esp6_input, 0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs, }, #endif #endif /* IPSEC */ #if NGIF > 0 { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, in6_gif_input,0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs }, { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, in6_gif_input,0, 0, 0, 0, 0, 0, 0, 0, &nousrreqs }, #endif /* GIF */ /* raw wildcard */ { SOCK_RAW, &inet6domain, 0, PR_ATOMIC | PR_ADDR, rip6_input, rip6_output, 0, rip6_ctloutput, 0, 0, 0, 0, 0, &rip6_usrreqs }, }; extern int in6_inithead __P((void **, int)); struct domain inet6domain = { AF_INET6, "internet6", 0, 0, 0, (struct protosw *)inet6sw, (struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 0, in6_inithead, offsetof(struct sockaddr_in6, sin6_addr) << 3, sizeof(struct sockaddr_in6) }; DOMAIN_SET(inet6); /* * Internet configuration info */ #ifndef IPV6FORWARDING #ifdef GATEWAY6 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ #else #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ #endif /* GATEWAY6 */ #endif /* !IPV6FORWARDING */ #ifndef IPV6_SENDREDIRECTS #define IPV6_SENDREDIRECTS 1 #endif int ip6_forwarding = IPV6FORWARDING; /* act as router? */ int ip6_sendredirects = IPV6_SENDREDIRECTS; int ip6_defhlim = IPV6_DEFHLIM; int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */ int ip6_maxfragpackets = 200; int ip6_log_interval = 5; int ip6_hdrnestlimit = 50; /* appropriate? */ int ip6_dad_count = 1; /* DupAddrDetectionTransmits */ u_int32_t ip6_flow_seq; int ip6_auto_flowlabel = 1; #if NGIF > 0 int ip6_gif_hlim = GIF_HLIM; #else int ip6_gif_hlim = 0; #endif 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_mapped_addr_on = 1; u_int32_t ip6_id = 0UL; int ip6_keepfaith = 0; time_t ip6_log_time = (time_t)0L; /* icmp6 */ /* * BSDI4 defines these variables in in_proto.c... * XXX: what if we don't define INET? Should we define pmtu6_expire * or so? (jinmei@kame.net 19990310) */ int pmtu_expire = 60*10; int pmtu_probe = 60*2; /* 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 = 1; /* accept and process redirects */ int icmp6_redirtimeout = 10 * 60; /* 10 minutes */ u_int icmp6errratelim = 1000; /* 1000usec = 1msec */ /* UDP on IP6 parameters */ int udp6_sendspace = 9216; /* really max datagram size */ int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6)); /* 40 1K datagrams */ /* * sysctl related items. */ SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, "Internet6 Family"); /* net.inet6 */ SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); #ifdef IPSEC SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); #endif /* IPSEC */ /* net.inet6.ip6 */ static int sysctl_ip6_forwarding SYSCTL_HANDLER_ARGS { int error = 0; int old_ip6_forwarding; int changed; error = SYSCTL_OUT(req, arg1, sizeof(int)); if (error || !req->newptr) return (error); old_ip6_forwarding = ip6_forwarding; error = SYSCTL_IN(req, arg1, sizeof(int)); if (error != 0) return (error); changed = (ip6_forwarding ? 1 : 0) ^ (old_ip6_forwarding ? 1 : 0); if (changed == 0) return (error); if (ip6_forwarding != 0) { /* host becomes router */ int s = splnet(); struct nd_prefix *pr, *next; for (pr = LIST_FIRST(&nd_prefix); pr; pr = next) { next = LIST_NEXT(pr, ndpr_entry); if (!IN6_IS_ADDR_UNSPECIFIED(&pr->ndpr_addr)) in6_ifdel(pr->ndpr_ifp, &pr->ndpr_addr); prelist_remove(pr); } splx(s); } else { /* router becomes host */ struct socket so; /* XXX: init dummy so */ bzero(&so, sizeof(so)); while(!LIST_EMPTY(&rr_prefix)) delete_each_prefix(&so, LIST_FIRST(&rr_prefix), PR_ORIG_KERNEL); } return (error); } SYSCTL_OID(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, CTLTYPE_INT|CTLFLAG_RW, &ip6_forwarding, 0, sysctl_ip6_forwarding, "I", ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, CTLFLAG_RW, &ip6_sendredirects, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, CTLFLAG_RW, &ip6_defhlim, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets, CTLFLAG_RW, &ip6_maxfragpackets, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, CTLFLAG_RW, &ip6_accept_rtadv, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH, keepfaith, CTLFLAG_RW, &ip6_keepfaith, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, CTLFLAG_RW, &ip6_log_interval, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, CTLFLAG_RW, &ip6_hdrnestlimit, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, CTLFLAG_RW, &ip6_dad_count, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, CTLFLAG_RW, &ip6_auto_flowlabel, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, CTLFLAG_RW, &ip6_defmcasthlim, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM, gifhlim, CTLFLAG_RW, &ip6_gif_hlim, 0, ""); SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, CTLFLAG_RD, __KAME_VERSION, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, CTLFLAG_RW, &ip6_use_deprecated, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, CTLFLAG_RW, &ip6_rr_prune, 0, ""); SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAPPED_ADDR, mapped_addr, CTLFLAG_RW, &ip6_mapped_addr_on, 0, ""); /* net.inet6.icmp6 */ SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, CTLFLAG_RW, &icmp6_rediraccept, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, CTLFLAG_RW, &icmp6_redirtimeout, 0, ""); SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD, &icmp6stat, icmp6stat, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRRATELIMIT, errratelimit, CTLFLAG_RW, &icmp6errratelim, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, CTLFLAG_RW, &nd6_prune, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, CTLFLAG_RW, &nd6_delay, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, CTLFLAG_RW, &nd6_umaxtries, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, CTLFLAG_RW, &nd6_mmaxtries, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, CTLFLAG_RW, &nd6_useloopback, 0, ""); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PROXYALL, nd6_proxyall, CTLFLAG_RW, &nd6_proxyall, 0, "");