in_proto.c revision 29506
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 * $Id: in_proto.c,v 1.40 1997/05/25 06:09:23 peter Exp $ 35 */ 36 37#include <sys/param.h> 38#include <sys/queue.h> 39#include <sys/kernel.h> 40#include <sys/socket.h> 41#include <sys/socketvar.h> 42#include <sys/domain.h> 43#include <sys/mbuf.h> 44#include <sys/protosw.h> 45#include <sys/sysctl.h> 46 47#include <net/if.h> 48#include <net/radix.h> 49#include <net/route.h> 50 51#include <netinet/in.h> 52#include <netinet/in_systm.h> 53#include <netinet/ip.h> 54#include <netinet/ip_var.h> 55#include <netinet/ip_icmp.h> 56#include <netinet/in_pcb.h> 57#include <netinet/igmp_var.h> 58#include <netinet/tcp.h> 59#include <netinet/tcp_fsm.h> 60#include <netinet/tcp_seq.h> 61#include <netinet/tcp_timer.h> 62#include <netinet/tcp_var.h> 63#include <netinet/tcpip.h> 64#ifdef TCPDEBUG 65#include <netinet/tcp_debug.h> 66#endif 67#include <netinet/udp.h> 68#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 0, 155 div_init, 0, 0, 0, 156 &div_usrreqs, 157}, 158#endif 159#ifdef TPIP 160{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 161 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 162 tp_usrreq, 163 tp_init, 0, tp_slowtimo, tp_drain, 164}, 165#endif 166/* EON (ISO CLNL over IP) */ 167#ifdef EON 168{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 169 eoninput, 0, eonctlinput, 0, 170 0, 171 eonprotoinit, 0, 0, 0, 172}, 173#endif 174#ifdef IPXIP 175{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 176 ipxip_input, 0, ipxip_ctlinput, 0, 177 0, 178 0, 0, 0, 0, 179 &rip_usrreqs 180}, 181#endif 182#ifdef NSIP 183{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 184 idpip_input, 0, nsip_ctlinput, 0, 185 0, 186 0, 0, 0, 0, 187 &rip_usrreqs 188}, 189#endif 190 /* raw wildcard */ 191{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 192 rip_input, 0, 0, rip_ctloutput, 193 0, 194 rip_init, 0, 0, 0, 195 &rip_usrreqs 196}, 197}; 198 199extern int in_inithead __P((void **, int)); 200 201struct domain inetdomain = 202 { AF_INET, "internet", 0, 0, 0, 203 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 204 in_inithead, 32, sizeof(struct sockaddr_in) 205 }; 206 207DOMAIN_SET(inet); 208 209SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 210 "Internet Family"); 211 212SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 213SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 214SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 215SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 216SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 217SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 218#ifdef IPDIVERT 219SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 220#endif 221 222