in_proto.c revision 142215
1116411Sphk/*- 2116411Sphk * Copyright (c) 1982, 1986, 1993 3116411Sphk * The Regents of the University of California. All rights reserved. 4116411Sphk * 5116411Sphk * Redistribution and use in source and binary forms, with or without 6116411Sphk * modification, are permitted provided that the following conditions 7116411Sphk * are met: 8116411Sphk * 1. Redistributions of source code must retain the above copyright 9116411Sphk * notice, this list of conditions and the following disclaimer. 10116411Sphk * 2. Redistributions in binary form must reproduce the above copyright 11116411Sphk * notice, this list of conditions and the following disclaimer in the 12116411Sphk * documentation and/or other materials provided with the distribution. 13116411Sphk * 4. Neither the name of the University nor the names of its contributors 14116411Sphk * may be used to endorse or promote products derived from this software 15116411Sphk * without specific prior written permission. 16116411Sphk * 17116411Sphk * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18116411Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19116411Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20116411Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21116411Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22116411Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23116411Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24116411Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25116411Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26116411Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27116411Sphk * SUCH DAMAGE. 28116411Sphk * 29116411Sphk * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 30116411Sphk * $FreeBSD: head/sys/netinet/in_proto.c 142215 2005-02-22 13:04:05Z glebius $ 31116411Sphk */ 32116411Sphk 33116411Sphk#include "opt_ipx.h" 34116411Sphk#include "opt_mrouting.h" 35116411Sphk#include "opt_ipsec.h" 36116411Sphk#include "opt_inet6.h" 37116411Sphk#include "opt_pf.h" 38116411Sphk#include "opt_carp.h" 39116411Sphk 40116411Sphk#include <sys/param.h> 41116411Sphk#include <sys/systm.h> 42116411Sphk#include <sys/kernel.h> 43116411Sphk#include <sys/socket.h> 44116411Sphk#include <sys/domain.h> 45116411Sphk#include <sys/protosw.h> 46116411Sphk#include <sys/queue.h> 47116411Sphk#include <sys/sysctl.h> 48116411Sphk 49116411Sphk#include <net/if.h> 50116411Sphk#include <net/route.h> 51116411Sphk 52116411Sphk#include <netinet/in.h> 53116411Sphk#include <netinet/in_systm.h> 54116411Sphk#include <netinet/ip.h> 55116411Sphk#include <netinet/ip_var.h> 56116411Sphk#include <netinet/ip_icmp.h> 57116411Sphk#include <netinet/igmp_var.h> 58116411Sphk#ifdef PIM 59116411Sphk#include <netinet/pim_var.h> 60116411Sphk#endif 61116411Sphk#include <netinet/tcp.h> 62116411Sphk#include <netinet/tcp_timer.h> 63116411Sphk#include <netinet/tcp_var.h> 64116411Sphk#include <netinet/udp.h> 65116411Sphk#include <netinet/udp_var.h> 66116411Sphk#include <netinet/ip_encap.h> 67116411Sphk 68116411Sphk/* 69116411Sphk * TCP/IP protocol family: IP, ICMP, UDP, TCP. 70116411Sphk */ 71116411Sphk 72116411Sphk#ifdef IPSEC 73116411Sphk#include <netinet6/ipsec.h> 74116411Sphk#include <netinet6/ah.h> 75160964Syar#ifdef IPSEC_ESP 76116411Sphk#include <netinet6/esp.h> 77116411Sphk#endif 78116411Sphk#include <netinet6/ipcomp.h> 79116411Sphk#endif /* IPSEC */ 80116411Sphk 81116411Sphk#ifdef FAST_IPSEC 82116411Sphk#include <netipsec/ipsec.h> 83116411Sphk#endif /* FAST_IPSEC */ 84116411Sphk 85116411Sphk#ifdef IPXIP 86116411Sphk#include <netipx/ipx_ip.h> 87116411Sphk#endif 88116411Sphk 89116411Sphk#ifdef DEV_PFSYNC 90116411Sphk#include <net/pfvar.h> 91116411Sphk#include <net/if_pfsync.h> 92116411Sphk#endif 93116411Sphk 94116411Sphk#ifdef DEV_CARP 95116411Sphk#include <netinet/ip_carp.h> 96116411Sphk#endif 97116411Sphk 98116411Sphkextern struct domain inetdomain; 99116411Sphk 100116411Sphk/* Spacer for loadable protocols. */ 101116411Sphk#define IPPROTOSPACER \ 102119760Sjkoshy{ 0, &inetdomain, PROTO_SPACER, 0, \ 103116411Sphk NULL, NULL, NULL, NULL, \ 104116411Sphk NULL, \ 105116411Sphk NULL, NULL, NULL, NULL, \ 106116411Sphk &nousrreqs \ 107116411Sphk} 108116411Sphk 109116411Sphkstruct protosw inetsw[] = { 110116411Sphk{ 0, &inetdomain, 0, 0, 111116411Sphk 0, 0, 0, 0, 112116411Sphk 0, 113119760Sjkoshy ip_init, 0, ip_slowtimo, ip_drain, 114116411Sphk &nousrreqs 115116411Sphk}, 116116411Sphk{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 117116411Sphk udp_input, 0, udp_ctlinput, ip_ctloutput, 118116411Sphk 0, 119116411Sphk udp_init, 0, 0, 0, 120116411Sphk &udp_usrreqs 121116411Sphk}, 122116411Sphk{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 123116411Sphk PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 124116411Sphk tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 125116411Sphk 0, 126116411Sphk tcp_init, 0, tcp_slowtimo, tcp_drain, 127116411Sphk &tcp_usrreqs 128116411Sphk}, 129116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 130116411Sphk rip_input, 0, rip_ctlinput, rip_ctloutput, 131116411Sphk 0, 132116411Sphk 0, 0, 0, 0, 133116411Sphk &rip_usrreqs 134116411Sphk}, 135116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 136116411Sphk icmp_input, 0, 0, rip_ctloutput, 137116411Sphk 0, 138116411Sphk 0, 0, 0, 0, 139116411Sphk &rip_usrreqs 140116411Sphk}, 141116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 142116411Sphk igmp_input, 0, 0, rip_ctloutput, 143116411Sphk 0, 144116411Sphk igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 145116411Sphk &rip_usrreqs 146116411Sphk}, 147116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 148116411Sphk rsvp_input, 0, 0, rip_ctloutput, 149116411Sphk 0, 150116411Sphk 0, 0, 0, 0, 151116411Sphk &rip_usrreqs 152116411Sphk}, 153116411Sphk#ifdef IPSEC 154116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 155116411Sphk ah4_input, 0, 0, 0, 156116411Sphk 0, 157116411Sphk 0, 0, 0, 0, 158116411Sphk &nousrreqs 159116411Sphk}, 160116411Sphk#ifdef IPSEC_ESP 161116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 162116411Sphk esp4_input, 0, 0, 0, 163116411Sphk 0, 164116411Sphk 0, 0, 0, 0, 165116411Sphk &nousrreqs 166116411Sphk}, 167116411Sphk#endif 168116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 169116411Sphk ipcomp4_input, 0, 0, 0, 170116411Sphk 0, 171116411Sphk 0, 0, 0, 0, 172116411Sphk &nousrreqs 173116411Sphk}, 174116411Sphk#endif /* IPSEC */ 175116411Sphk#ifdef FAST_IPSEC 176116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 177116411Sphk ah4_input, 0, ah4_ctlinput, 0, 178116411Sphk 0, 179116411Sphk 0, 0, 0, 0, 180116411Sphk &nousrreqs 181116411Sphk}, 182116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 183116411Sphk esp4_input, 0, esp4_ctlinput, 0, 184116411Sphk 0, 185116411Sphk 0, 0, 0, 0, 186116411Sphk &nousrreqs 187116411Sphk}, 188116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 189116411Sphk ipcomp4_input, 0, 0, 0, 190116411Sphk 0, 191116411Sphk 0, 0, 0, 0, 192116411Sphk &nousrreqs 193116411Sphk}, 194116411Sphk#endif /* FAST_IPSEC */ 195116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 196116411Sphk encap4_input, 0, 0, rip_ctloutput, 197116411Sphk 0, 198116411Sphk encap_init, 0, 0, 0, 199116411Sphk &rip_usrreqs 200116411Sphk}, 201116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 202116411Sphk encap4_input, 0, 0, rip_ctloutput, 203116411Sphk 0, 204116411Sphk encap_init, 0, 0, 0, 205116411Sphk &rip_usrreqs 206116411Sphk}, 207116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 208116411Sphk encap4_input, 0, 0, rip_ctloutput, 209116411Sphk 0, 210116411Sphk encap_init, 0, 0, 0, 211116411Sphk &rip_usrreqs 212116411Sphk}, 213116411Sphk# ifdef INET6 214116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 215116411Sphk encap4_input, 0, 0, rip_ctloutput, 216116411Sphk 0, 217116411Sphk encap_init, 0, 0, 0, 218116411Sphk &rip_usrreqs 219116411Sphk}, 220116411Sphk#endif 221116411Sphk#ifdef IPXIP 222116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 223116411Sphk ipxip_input, 0, ipxip_ctlinput, 0, 224116411Sphk 0, 225116411Sphk 0, 0, 0, 0, 226116411Sphk &rip_usrreqs 227116411Sphk}, 228116411Sphk#endif 229116411Sphk#ifdef PIM 230116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 231116411Sphk pim_input, 0, 0, rip_ctloutput, 232116411Sphk 0, 233116411Sphk 0, 0, 0, 0, 234116411Sphk &rip_usrreqs 235116411Sphk}, 236116411Sphk#endif /* PIM */ 237116411Sphk#ifdef DEV_PFSYNC 238116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR, 239116411Sphk pfsync_input, 0, 0, rip_ctloutput, 240116411Sphk 0, 241116411Sphk 0, 0, 0, 0, 242116411Sphk &rip_usrreqs 243116411Sphk}, 244116411Sphk#endif /* DEV_PFSYNC */ 245116411Sphk#ifdef DEV_CARP 246116411Sphk{ SOCK_RAW, &inetdomain, IPPROTO_CARP, PR_ATOMIC|PR_ADDR, 247116411Sphk carp_input, (pr_output_t*)rip_output, 0, rip_ctloutput, 248116411Sphk 0, 249116411Sphk 0, 0, 0, 0, 250116411Sphk &rip_usrreqs 251116411Sphk}, 252116411Sphk#endif /* DEV_CARP */ 253116411Sphk/* Spacer n-times for loadable protocols. */ 254119760SjkoshyIPPROTOSPACER, 255116411SphkIPPROTOSPACER, 256116411SphkIPPROTOSPACER, 257116411SphkIPPROTOSPACER, 258116411SphkIPPROTOSPACER, 259116411SphkIPPROTOSPACER, 260116411SphkIPPROTOSPACER, 261116411SphkIPPROTOSPACER, 262116411Sphk/* raw wildcard */ 263116411Sphk{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 264116411Sphk rip_input, 0, 0, rip_ctloutput, 265116411Sphk 0, 266116411Sphk rip_init, 0, 0, 0, 267116411Sphk &rip_usrreqs 268116411Sphk}, 269116411Sphk}; 270116411Sphk 271116411Sphkextern int in_inithead(void **, int); 272116411Sphk 273116411Sphkstruct domain inetdomain = 274116411Sphk { AF_INET, "internet", 0, 0, 0, 275119760Sjkoshy inetsw, 276116411Sphk &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 277116411Sphk in_inithead, 32, sizeof(struct sockaddr_in) 278116411Sphk }; 279116411Sphk 280116411SphkDOMAIN_SET(inet); 281116411Sphk 282116411SphkSYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 283116411Sphk "Internet Family"); 284116411Sphk 285116411SphkSYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 286116411SphkSYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 287116411SphkSYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 288116411SphkSYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 289116411SphkSYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 290116411Sphk#ifdef FAST_IPSEC 291116411Sphk/* XXX no protocol # to use, pick something "reserved" */ 292116411SphkSYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 293116411SphkSYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 294116411SphkSYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 295116411SphkSYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 296116411SphkSYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 297116411Sphk#else 298116411Sphk#ifdef IPSEC 299116411SphkSYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 300116411Sphk#endif /* IPSEC */ 301116411Sphk#endif /* !FAST_IPSEC */ 302116411SphkSYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 303116411Sphk#ifdef PIM 304116411SphkSYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 305116411Sphk#endif 306116411Sphk#ifdef DEV_CARP 307116411SphkSYSCTL_NODE(_net_inet, IPPROTO_CARP, carp, CTLFLAG_RW, 0, "CARP"); 308116411Sphk#endif 309116411Sphk