in_proto.c revision 111926
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 111926 2003-03-05 19:24:24Z peter $ 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/systm.h> 44#include <sys/kernel.h> 45#include <sys/socket.h> 46#include <sys/domain.h> 47#include <sys/protosw.h> 48#include <sys/queue.h> 49#include <sys/sysctl.h> 50 51#include <net/if.h> 52#include <net/route.h> 53 54#include <netinet/in.h> 55#include <netinet/in_systm.h> 56#include <netinet/ip.h> 57#include <netinet/ip_var.h> 58#include <netinet/ip_icmp.h> 59#include <netinet/igmp_var.h> 60#include <netinet/tcp.h> 61#include <netinet/tcp_timer.h> 62#include <netinet/tcp_var.h> 63#include <netinet/udp.h> 64#include <netinet/udp_var.h> 65#include <netinet/ip_encap.h> 66 67/* 68 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 69 */ 70 71#ifdef IPSEC 72#include <netinet6/ipsec.h> 73#include <netinet6/ah.h> 74#ifdef IPSEC_ESP 75#include <netinet6/esp.h> 76#endif 77#include <netinet6/ipcomp.h> 78#endif /* IPSEC */ 79 80#ifdef FAST_IPSEC 81#include <netipsec/ipsec.h> 82#endif /* FAST_IPSEC */ 83 84#ifdef IPXIP 85#include <netipx/ipx_ip.h> 86#endif 87 88extern struct domain inetdomain; 89static struct pr_usrreqs nousrreqs; 90 91struct protosw inetsw[] = { 92{ 0, &inetdomain, 0, 0, 93 0, 0, 0, 0, 94 0, 95 ip_init, 0, ip_slowtimo, ip_drain, 96 &nousrreqs 97}, 98{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 99 udp_input, 0, udp_ctlinput, ip_ctloutput, 100 0, 101 udp_init, 0, 0, 0, 102 &udp_usrreqs 103}, 104{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 105 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 106 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 107 0, 108 tcp_init, 0, tcp_slowtimo, tcp_drain, 109 &tcp_usrreqs 110}, 111{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 112 rip_input, 0, rip_ctlinput, rip_ctloutput, 113 0, 114 0, 0, 0, 0, 115 &rip_usrreqs 116}, 117{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 118 icmp_input, 0, 0, rip_ctloutput, 119 0, 120 0, 0, 0, 0, 121 &rip_usrreqs 122}, 123{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 124 igmp_input, 0, 0, rip_ctloutput, 125 0, 126 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 127 &rip_usrreqs 128}, 129{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 130 rsvp_input, 0, 0, rip_ctloutput, 131 0, 132 0, 0, 0, 0, 133 &rip_usrreqs 134}, 135#ifdef IPSEC 136{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 137 ah4_input, 0, 0, 0, 138 0, 139 0, 0, 0, 0, 140 &nousrreqs 141}, 142#ifdef IPSEC_ESP 143{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 144 esp4_input, 0, 0, 0, 145 0, 146 0, 0, 0, 0, 147 &nousrreqs 148}, 149#endif 150{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 151 ipcomp4_input, 0, 0, 0, 152 0, 153 0, 0, 0, 0, 154 &nousrreqs 155}, 156#endif /* IPSEC */ 157#ifdef FAST_IPSEC 158{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 159 ah4_input, 0, 0, 0, 160 0, 161 0, 0, 0, 0, 162 &nousrreqs 163}, 164{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 165 esp4_input, 0, 0, 0, 166 0, 167 0, 0, 0, 0, 168 &nousrreqs 169}, 170{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 171 ipcomp4_input, 0, 0, 0, 172 0, 173 0, 0, 0, 0, 174 &nousrreqs 175}, 176#endif /* FAST_IPSEC */ 177{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 178 encap4_input, 0, 0, rip_ctloutput, 179 0, 180 encap_init, 0, 0, 0, 181 &rip_usrreqs 182}, 183{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 184 encap4_input, 0, 0, rip_ctloutput, 185 0, 186 encap_init, 0, 0, 0, 187 &rip_usrreqs 188}, 189{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 190 encap4_input, 0, 0, rip_ctloutput, 191 0, 192 encap_init, 0, 0, 0, 193 &rip_usrreqs 194}, 195# ifdef INET6 196{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 197 encap4_input, 0, 0, rip_ctloutput, 198 0, 199 encap_init, 0, 0, 0, 200 &rip_usrreqs 201}, 202#endif 203#ifdef IPDIVERT 204{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 205 div_input, 0, 0, ip_ctloutput, 206 0, 207 div_init, 0, 0, 0, 208 &div_usrreqs, 209}, 210#endif 211#ifdef IPXIP 212{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 213 ipxip_input, 0, ipxip_ctlinput, 0, 214 0, 215 0, 0, 0, 0, 216 &rip_usrreqs 217}, 218#endif 219 /* raw wildcard */ 220{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 221 rip_input, 0, 0, rip_ctloutput, 222 0, 223 rip_init, 0, 0, 0, 224 &rip_usrreqs 225}, 226}; 227 228extern int in_inithead(void **, int); 229 230struct domain inetdomain = 231 { AF_INET, "internet", 0, 0, 0, 232 inetsw, 233 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 234 in_inithead, 32, sizeof(struct sockaddr_in) 235 }; 236 237DOMAIN_SET(inet); 238 239SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 240 "Internet Family"); 241 242SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 243SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 244SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 245SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 246SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 247#ifdef FAST_IPSEC 248/* XXX no protocol # to use, pick something "reserved" */ 249SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 250SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 251SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 252SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 253SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 254#else 255#ifdef IPSEC 256SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 257#endif /* IPSEC */ 258#endif /* !FAST_IPSEC */ 259SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 260#ifdef IPDIVERT 261SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 262#endif 263 264