in_proto.c revision 79106
1/* 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 34 * $FreeBSD: head/sys/netinet/in_proto.c 79106 2001-07-02 21:02:09Z brooks $ 35 */ 36 37#include "opt_ipdivert.h" 38#include "opt_ipx.h" 39#include "opt_ipsec.h" 40#include "opt_inet6.h" 41 42#include <sys/param.h> 43#include <sys/kernel.h> 44#include <sys/socket.h> 45#include <sys/domain.h> 46#include <sys/protosw.h> 47#include <sys/queue.h> 48#include <sys/sysctl.h> 49 50#include <net/if.h> 51#include <net/route.h> 52 53#include <netinet/in.h> 54#include <netinet/in_systm.h> 55#include <netinet/ip.h> 56#include <netinet/ip_var.h> 57#include <netinet/ip_icmp.h> 58#include <netinet/igmp_var.h> 59#include <netinet/tcp.h> 60#include <netinet/tcp_timer.h> 61#include <netinet/tcp_var.h> 62#include <netinet/udp.h> 63#include <netinet/udp_var.h> 64#include <netinet/ip_encap.h> 65 66#include <netinet/ipprotosw.h> 67 68/* 69 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 70 */ 71 72#ifdef IPSEC 73#include <netinet6/ipsec.h> 74#include <netinet6/ah.h> 75#ifdef IPSEC_ESP 76#include <netinet6/esp.h> 77#endif 78#include <netinet6/ipcomp.h> 79#endif /* IPSEC */ 80 81#ifdef IPXIP 82#include <netipx/ipx_ip.h> 83#endif 84 85#ifdef NSIP 86#include <netns/ns.h> 87#include <netns/ns_if.h> 88#endif 89 90extern struct domain inetdomain; 91static struct pr_usrreqs nousrreqs; 92 93struct ipprotosw inetsw[] = { 94{ 0, &inetdomain, 0, 0, 95 0, 0, 0, 0, 96 0, 97 ip_init, 0, ip_slowtimo, ip_drain, 98 &nousrreqs 99}, 100{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 101 udp_input, 0, udp_ctlinput, ip_ctloutput, 102 0, 103 udp_init, 0, 0, 0, 104 &udp_usrreqs 105}, 106{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 107 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 108 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 109 0, 110 tcp_init, 0, tcp_slowtimo, tcp_drain, 111 &tcp_usrreqs 112}, 113{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 114 rip_input, 0, rip_ctlinput, rip_ctloutput, 115 0, 116 0, 0, 0, 0, 117 &rip_usrreqs 118}, 119{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 120 icmp_input, 0, 0, rip_ctloutput, 121 0, 122 0, 0, 0, 0, 123 &rip_usrreqs 124}, 125{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 126 igmp_input, 0, 0, rip_ctloutput, 127 0, 128 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 129 &rip_usrreqs 130}, 131{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 132 rsvp_input, 0, 0, rip_ctloutput, 133 0, 134 0, 0, 0, 0, 135 &rip_usrreqs 136}, 137#ifdef IPSEC 138{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 139 ah4_input, 0, 0, 0, 140 0, 141 0, 0, 0, 0, 142 &nousrreqs 143}, 144#ifdef IPSEC_ESP 145{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 146 esp4_input, 0, 0, 0, 147 0, 148 0, 0, 0, 0, 149 &nousrreqs 150}, 151#endif 152{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 153 ipcomp4_input, 0, 0, 0, 154 0, 155 0, 0, 0, 0, 156 &nousrreqs 157}, 158#endif /* IPSEC */ 159{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 160 encap4_input, 0, 0, rip_ctloutput, 161 0, 162 encap_init, 0, 0, 0, 163 &rip_usrreqs 164}, 165# ifdef INET6 166{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 167 encap4_input, 0, 0, rip_ctloutput, 168 0, 169 encap_init, 0, 0, 0, 170 &rip_usrreqs 171}, 172#endif 173#ifdef IPDIVERT 174{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 175 div_input, 0, 0, ip_ctloutput, 176 0, 177 div_init, 0, 0, 0, 178 &div_usrreqs, 179}, 180#endif 181#ifdef IPXIP 182{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 183 ipxip_input, 0, ipxip_ctlinput, 0, 184 0, 185 0, 0, 0, 0, 186 &rip_usrreqs 187}, 188#endif 189#ifdef NSIP 190{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 191 idpip_input, 0, nsip_ctlinput, 0, 192 0, 193 0, 0, 0, 0, 194 &rip_usrreqs 195}, 196#endif 197 /* raw wildcard */ 198{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 199 rip_input, 0, 0, rip_ctloutput, 200 0, 201 rip_init, 0, 0, 0, 202 &rip_usrreqs 203}, 204}; 205 206extern int in_inithead __P((void **, int)); 207 208struct domain inetdomain = 209 { AF_INET, "internet", 0, 0, 0, 210 (struct protosw *)inetsw, 211 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 212 in_inithead, 32, sizeof(struct sockaddr_in) 213 }; 214 215DOMAIN_SET(inet); 216 217SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 218 "Internet Family"); 219 220SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 221SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 222SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 223SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 224SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 225#ifdef IPSEC 226SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 227#endif /* IPSEC */ 228SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 229#ifdef IPDIVERT 230SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 231#endif 232 233