in_proto.c revision 118622
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 118622 2003-08-07 18:16:59Z hsu $ 35 */ 36 37#include "opt_ipdivert.h" 38#include "opt_ipx.h" 39#include "opt_mrouting.h" 40#include "opt_ipsec.h" 41#include "opt_inet6.h" 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/kernel.h> 46#include <sys/socket.h> 47#include <sys/domain.h> 48#include <sys/protosw.h> 49#include <sys/queue.h> 50#include <sys/sysctl.h> 51 52#include <net/if.h> 53#include <net/route.h> 54 55#include <netinet/in.h> 56#include <netinet/in_systm.h> 57#include <netinet/ip.h> 58#include <netinet/ip_var.h> 59#include <netinet/ip_icmp.h> 60#include <netinet/igmp_var.h> 61#ifdef PIM 62#include <netinet/pim_var.h> 63#endif 64#include <netinet/tcp.h> 65#include <netinet/tcp_timer.h> 66#include <netinet/tcp_var.h> 67#include <netinet/udp.h> 68#include <netinet/udp_var.h> 69#include <netinet/ip_encap.h> 70 71/* 72 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 73 */ 74 75#ifdef IPSEC 76#include <netinet6/ipsec.h> 77#include <netinet6/ah.h> 78#ifdef IPSEC_ESP 79#include <netinet6/esp.h> 80#endif 81#include <netinet6/ipcomp.h> 82#endif /* IPSEC */ 83 84#ifdef FAST_IPSEC 85#include <netipsec/ipsec.h> 86#endif /* FAST_IPSEC */ 87 88#ifdef IPXIP 89#include <netipx/ipx_ip.h> 90#endif 91 92extern struct domain inetdomain; 93static struct pr_usrreqs nousrreqs; 94 95struct protosw inetsw[] = { 96{ 0, &inetdomain, 0, 0, 97 0, 0, 0, 0, 98 0, 99 ip_init, 0, ip_slowtimo, ip_drain, 100 &nousrreqs 101}, 102{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 103 udp_input, 0, udp_ctlinput, ip_ctloutput, 104 0, 105 udp_init, 0, 0, 0, 106 &udp_usrreqs 107}, 108{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 109 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 110 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 111 0, 112 tcp_init, 0, tcp_slowtimo, tcp_drain, 113 &tcp_usrreqs 114}, 115{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 116 rip_input, 0, rip_ctlinput, rip_ctloutput, 117 0, 118 0, 0, 0, 0, 119 &rip_usrreqs 120}, 121{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 122 icmp_input, 0, 0, rip_ctloutput, 123 0, 124 0, 0, 0, 0, 125 &rip_usrreqs 126}, 127{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 128 igmp_input, 0, 0, rip_ctloutput, 129 0, 130 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 131 &rip_usrreqs 132}, 133{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 134 rsvp_input, 0, 0, rip_ctloutput, 135 0, 136 0, 0, 0, 0, 137 &rip_usrreqs 138}, 139#ifdef IPSEC 140{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 141 ah4_input, 0, 0, 0, 142 0, 143 0, 0, 0, 0, 144 &nousrreqs 145}, 146#ifdef IPSEC_ESP 147{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 148 esp4_input, 0, 0, 0, 149 0, 150 0, 0, 0, 0, 151 &nousrreqs 152}, 153#endif 154{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 155 ipcomp4_input, 0, 0, 0, 156 0, 157 0, 0, 0, 0, 158 &nousrreqs 159}, 160#endif /* IPSEC */ 161#ifdef FAST_IPSEC 162{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 163 ah4_input, 0, 0, 0, 164 0, 165 0, 0, 0, 0, 166 &nousrreqs 167}, 168{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 169 esp4_input, 0, 0, 0, 170 0, 171 0, 0, 0, 0, 172 &nousrreqs 173}, 174{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 175 ipcomp4_input, 0, 0, 0, 176 0, 177 0, 0, 0, 0, 178 &nousrreqs 179}, 180#endif /* FAST_IPSEC */ 181{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 182 encap4_input, 0, 0, rip_ctloutput, 183 0, 184 encap_init, 0, 0, 0, 185 &rip_usrreqs 186}, 187{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 188 encap4_input, 0, 0, rip_ctloutput, 189 0, 190 encap_init, 0, 0, 0, 191 &rip_usrreqs 192}, 193{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 194 encap4_input, 0, 0, rip_ctloutput, 195 0, 196 encap_init, 0, 0, 0, 197 &rip_usrreqs 198}, 199# ifdef INET6 200{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 201 encap4_input, 0, 0, rip_ctloutput, 202 0, 203 encap_init, 0, 0, 0, 204 &rip_usrreqs 205}, 206#endif 207#ifdef IPDIVERT 208{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 209 div_input, 0, 0, ip_ctloutput, 210 0, 211 div_init, 0, 0, 0, 212 &div_usrreqs, 213}, 214#endif 215#ifdef IPXIP 216{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 217 ipxip_input, 0, ipxip_ctlinput, 0, 218 0, 219 0, 0, 0, 0, 220 &rip_usrreqs 221}, 222#endif 223#ifdef PIM 224{ SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 225 pim_input, 0, 0, rip_ctloutput, 226 0, 227 0, 0, 0, 0, 228 &rip_usrreqs 229}, 230#endif /* PIM */ 231 /* raw wildcard */ 232{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 233 rip_input, 0, 0, rip_ctloutput, 234 0, 235 rip_init, 0, 0, 0, 236 &rip_usrreqs 237}, 238}; 239 240extern int in_inithead(void **, int); 241 242struct domain inetdomain = 243 { AF_INET, "internet", 0, 0, 0, 244 inetsw, 245 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 246 in_inithead, 32, sizeof(struct sockaddr_in) 247 }; 248 249DOMAIN_SET(inet); 250 251SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 252 "Internet Family"); 253 254SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 255SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 256SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 257SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 258SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 259#ifdef FAST_IPSEC 260/* XXX no protocol # to use, pick something "reserved" */ 261SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 262SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 263SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 264SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 265SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 266#else 267#ifdef IPSEC 268SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 269#endif /* IPSEC */ 270#endif /* !FAST_IPSEC */ 271SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 272#ifdef IPDIVERT 273SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 274#endif 275#ifdef PIM 276SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 277#endif 278