in_proto.c revision 25201
11849Swollman/* 21849Swollman * Copyright (c) 1982, 1986, 1993 31849Swollman * The Regents of the University of California. All rights reserved. 41849Swollman * 51849Swollman * Redistribution and use in source and binary forms, with or without 61849Swollman * modification, are permitted provided that the following conditions 71849Swollman * are met: 81849Swollman * 1. Redistributions of source code must retain the above copyright 91849Swollman * notice, this list of conditions and the following disclaimer. 101849Swollman * 2. Redistributions in binary form must reproduce the above copyright 111849Swollman * notice, this list of conditions and the following disclaimer in the 121849Swollman * documentation and/or other materials provided with the distribution. 131849Swollman * 3. All advertising materials mentioning features or use of this software 141849Swollman * must display the following acknowledgement: 151849Swollman * This product includes software developed by the University of 161849Swollman * California, Berkeley and its contributors. 171849Swollman * 4. Neither the name of the University nor the names of its contributors 181849Swollman * may be used to endorse or promote products derived from this software 191849Swollman * without specific prior written permission. 201849Swollman * 211849Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221849Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231849Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241849Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251849Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261849Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271849Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281849Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291849Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301849Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311849Swollman * SUCH DAMAGE. 325790Sdg * 3350476Speter * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 341849Swollman * $Id: in_proto.c,v 1.38 1997/02/18 20:46:22 wollman Exp $ 351849Swollman */ 3685437Speter 371849Swollman#include <sys/param.h> 381849Swollman#include <sys/queue.h> 391849Swollman#include <sys/kernel.h> 401849Swollman#include <sys/socket.h> 411849Swollman#include <sys/socketvar.h> 421849Swollman#include <sys/domain.h> 431849Swollman#include <sys/mbuf.h> 441849Swollman#include <sys/protosw.h> 451849Swollman#include <sys/sysctl.h> 461849Swollman 471849Swollman#include <net/if.h> 481849Swollman#include <net/radix.h> 491849Swollman#include <net/route.h> 501849Swollman 511849Swollman#include <netinet/in.h> 521849Swollman#include <netinet/in_systm.h> 531849Swollman#include <netinet/ip.h> 541849Swollman#include <netinet/ip_var.h> 551849Swollman#include <netinet/ip_icmp.h> 561849Swollman#include <netinet/in_pcb.h> 571849Swollman#include <netinet/igmp_var.h> 581849Swollman#include <netinet/tcp.h> 591849Swollman#include <netinet/tcp_fsm.h> 601849Swollman#include <netinet/tcp_seq.h> 611849Swollman#include <netinet/tcp_timer.h> 621849Swollman#include <netinet/tcp_var.h> 631849Swollman#include <netinet/tcpip.h> 641849Swollman#ifdef TCPDEBUG 651849Swollman#include <netinet/tcp_debug.h> 661849Swollman#endif 671849Swollman#include <netinet/udp.h> 681849Swollman#include <netinet/udp_var.h> 69/* 70 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 71 */ 72 73#ifdef IPXIP 74#include <netipx/ipx.h> 75#include <netipx/ipx_ip.h> 76#endif 77 78#ifdef NSIP 79#include <netns/ns.h> 80#include <netns/ns_if.h> 81#endif 82 83#ifdef TPIP 84void tpip_input(), tpip_ctlinput(), tp_init(), tp_slowtimo(), tp_drain(); 85int tp_ctloutput(), tp_usrreq(); 86#endif 87 88#ifdef EON 89void eoninput(), eonctlinput(), eonprotoinit(); 90#endif /* EON */ 91 92#ifdef IPFILTER 93void iplinit(); 94#define ip_init iplinit 95#endif 96 97 98extern struct domain inetdomain; 99static struct pr_usrreqs nousrreqs; 100 101struct protosw inetsw[] = { 102{ 0, &inetdomain, 0, 0, 103 0, 0, 0, 0, 104 0, 105 ip_init, 0, ip_slowtimo, ip_drain, 106 &nousrreqs 107}, 108{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 109 udp_input, 0, udp_ctlinput, ip_ctloutput, 110 0, 111 udp_init, 0, 0, 0, 112 &udp_usrreqs 113}, 114{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 115 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 116 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 117 0, 118 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 119 &tcp_usrreqs 120}, 121{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 122 rip_input, 0, rip_ctlinput, rip_ctloutput, 123 0, 124 0, 0, 0, 0, 125 &rip_usrreqs 126}, 127{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 128 icmp_input, 0, 0, rip_ctloutput, 129 0, 130 0, 0, 0, 0, 131 &rip_usrreqs 132}, 133{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 134 igmp_input, 0, 0, rip_ctloutput, 135 0, 136 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 137 &rip_usrreqs 138}, 139{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 140 rsvp_input, 0, 0, rip_ctloutput, 141 0, 142 0, 0, 0, 0, 143 &rip_usrreqs 144}, 145{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 146 ipip_input, 0, 0, rip_ctloutput, 147 0, 148 0, 0, 0, 0, 149 &rip_usrreqs 150}, 151#ifdef IPDIVERT 152{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 153 div_input, 0, 0, ip_ctloutput, 154 div_usrreq, 155 div_init, 0, 0, 0, 156}, 157#endif 158#ifdef TPIP 159{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 160 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 161 tp_usrreq, 162 tp_init, 0, tp_slowtimo, tp_drain, 163}, 164#endif 165/* EON (ISO CLNL over IP) */ 166#ifdef EON 167{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 168 eoninput, 0, eonctlinput, 0, 169 0, 170 eonprotoinit, 0, 0, 0, 171}, 172#endif 173#ifdef IPXIP 174{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 175 ipxip_input, 0, ipxip_ctlinput, 0, 176 0, 177 0, 0, 0, 0, 178 &rip_usrreqs 179}, 180#endif 181#ifdef NSIP 182{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 183 idpip_input, 0, nsip_ctlinput, 0, 184 0, 185 0, 0, 0, 0, 186 &rip_usrreqs 187}, 188#endif 189 /* raw wildcard */ 190{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 191 rip_input, 0, 0, rip_ctloutput, 192 0, 193 rip_init, 0, 0, 0, 194 &rip_usrreqs 195}, 196}; 197 198extern int in_inithead(void **, int); 199 200struct domain inetdomain = 201 { AF_INET, "internet", 0, 0, 0, 202 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 203 in_inithead, 32, sizeof(struct sockaddr_in) 204 }; 205 206DOMAIN_SET(inet); 207 208SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 209 "Internet Family"); 210 211SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 212SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 213SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 214SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 215SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 216SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 217#ifdef IPDIVERT 218SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 219#endif 220 221