in_proto.c revision 111145
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 111145 2003-02-19 22:32:43Z jlemon $ 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 88#ifdef NSIP 89#include <netns/ns.h> 90#include <netns/ns_if.h> 91#endif 92 93extern struct domain inetdomain; 94static struct pr_usrreqs nousrreqs; 95 96struct protosw inetsw[] = { 97{ 0, &inetdomain, 0, 0, 98 0, 0, 0, 0, 99 0, 100 ip_init, 0, ip_slowtimo, ip_drain, 101 &nousrreqs 102}, 103{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 104 udp_input, 0, udp_ctlinput, ip_ctloutput, 105 0, 106 udp_init, 0, 0, 0, 107 &udp_usrreqs 108}, 109{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 110 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 111 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 112 0, 113 tcp_init, 0, tcp_slowtimo, tcp_drain, 114 &tcp_usrreqs 115}, 116{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 117 rip_input, 0, rip_ctlinput, rip_ctloutput, 118 0, 119 0, 0, 0, 0, 120 &rip_usrreqs 121}, 122{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 123 icmp_input, 0, 0, rip_ctloutput, 124 0, 125 0, 0, 0, 0, 126 &rip_usrreqs 127}, 128{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 129 igmp_input, 0, 0, rip_ctloutput, 130 0, 131 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 132 &rip_usrreqs 133}, 134{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 135 rsvp_input, 0, 0, rip_ctloutput, 136 0, 137 0, 0, 0, 0, 138 &rip_usrreqs 139}, 140#ifdef IPSEC 141{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 142 ah4_input, 0, 0, 0, 143 0, 144 0, 0, 0, 0, 145 &nousrreqs 146}, 147#ifdef IPSEC_ESP 148{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 149 esp4_input, 0, 0, 0, 150 0, 151 0, 0, 0, 0, 152 &nousrreqs 153}, 154#endif 155{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 156 ipcomp4_input, 0, 0, 0, 157 0, 158 0, 0, 0, 0, 159 &nousrreqs 160}, 161#endif /* IPSEC */ 162#ifdef FAST_IPSEC 163{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 164 ah4_input, 0, 0, 0, 165 0, 166 0, 0, 0, 0, 167 &nousrreqs 168}, 169{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 170 esp4_input, 0, 0, 0, 171 0, 172 0, 0, 0, 0, 173 &nousrreqs 174}, 175{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 176 ipcomp4_input, 0, 0, 0, 177 0, 178 0, 0, 0, 0, 179 &nousrreqs 180}, 181#endif /* FAST_IPSEC */ 182{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 183 encap4_input, 0, 0, rip_ctloutput, 184 0, 185 encap_init, 0, 0, 0, 186 &rip_usrreqs 187}, 188{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 189 encap4_input, 0, 0, rip_ctloutput, 190 0, 191 encap_init, 0, 0, 0, 192 &rip_usrreqs 193}, 194{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 195 encap4_input, 0, 0, rip_ctloutput, 196 0, 197 encap_init, 0, 0, 0, 198 &rip_usrreqs 199}, 200# ifdef INET6 201{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 202 encap4_input, 0, 0, rip_ctloutput, 203 0, 204 encap_init, 0, 0, 0, 205 &rip_usrreqs 206}, 207#endif 208#ifdef IPDIVERT 209{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 210 div_input, 0, 0, ip_ctloutput, 211 0, 212 div_init, 0, 0, 0, 213 &div_usrreqs, 214}, 215#endif 216#ifdef IPXIP 217{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 218 ipxip_input, 0, ipxip_ctlinput, 0, 219 0, 220 0, 0, 0, 0, 221 &rip_usrreqs 222}, 223#endif 224#ifdef NSIP 225{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 226 idpip_input, 0, nsip_ctlinput, 0, 227 0, 228 0, 0, 0, 0, 229 &rip_usrreqs 230}, 231#endif 232 /* raw wildcard */ 233{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 234 rip_input, 0, 0, rip_ctloutput, 235 0, 236 rip_init, 0, 0, 0, 237 &rip_usrreqs 238}, 239}; 240 241extern int in_inithead(void **, int); 242 243struct domain inetdomain = 244 { AF_INET, "internet", 0, 0, 0, 245 inetsw, 246 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 247 in_inithead, 32, sizeof(struct sockaddr_in) 248 }; 249 250DOMAIN_SET(inet); 251 252SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 253 "Internet Family"); 254 255SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 256SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 257SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 258SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 259SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 260#ifdef FAST_IPSEC 261/* XXX no protocol # to use, pick something "reserved" */ 262SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 263SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 264SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 265SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 266SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 267#else 268#ifdef IPSEC 269SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 270#endif /* IPSEC */ 271#endif /* !FAST_IPSEC */ 272SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 273#ifdef IPDIVERT 274SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 275#endif 276 277