in_proto.c revision 31742
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 1.44 1997/11/05 20:17:16 joerg Exp $ 35 */ 36 37#include "opt_ipdivert.h" 38#include "opt_ipx.h" 39 40#include <sys/param.h> 41#include <sys/kernel.h> 42#include <sys/socket.h> 43#include <sys/domain.h> 44#include <sys/protosw.h> 45#include <sys/sysctl.h> 46 47#include <net/if.h> 48#include <net/route.h> 49 50#include <netinet/in.h> 51#include <netinet/in_systm.h> 52#include <netinet/ip.h> 53#include <netinet/ip_var.h> 54#include <netinet/ip_icmp.h> 55#include <netinet/igmp_var.h> 56#include <netinet/tcp.h> 57#include <netinet/tcp_timer.h> 58#include <netinet/tcp_var.h> 59#include <netinet/udp.h> 60#include <netinet/udp_var.h> 61/* 62 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 63 */ 64 65#ifdef IPXIP 66#include <netipx/ipx_ip.h> 67#endif 68 69#ifdef NSIP 70#include <netns/ns.h> 71#include <netns/ns_if.h> 72#endif 73 74#ifdef TPIP 75void tpip_input(), tpip_ctlinput(), tp_init(), tp_slowtimo(), tp_drain(); 76int tp_ctloutput(), tp_usrreq(); 77#endif 78 79#ifdef EON 80void eoninput(), eonctlinput(), eonprotoinit(); 81#endif /* EON */ 82 83#ifdef IPFILTER 84void iplinit(); 85#define ip_init iplinit 86#endif 87 88 89extern struct domain inetdomain; 90static struct pr_usrreqs nousrreqs; 91 92struct protosw inetsw[] = { 93{ 0, &inetdomain, 0, 0, 94 0, 0, 0, 0, 95 0, 96 ip_init, 0, ip_slowtimo, ip_drain, 97 &nousrreqs 98}, 99{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 100 udp_input, 0, udp_ctlinput, ip_ctloutput, 101 0, 102 udp_init, 0, 0, 0, 103 &udp_usrreqs 104}, 105{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 106 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 107 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 108 0, 109 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 110 &tcp_usrreqs 111}, 112{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 113 rip_input, 0, rip_ctlinput, rip_ctloutput, 114 0, 115 0, 0, 0, 0, 116 &rip_usrreqs 117}, 118{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 119 icmp_input, 0, 0, rip_ctloutput, 120 0, 121 0, 0, 0, 0, 122 &rip_usrreqs 123}, 124{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 125 igmp_input, 0, 0, rip_ctloutput, 126 0, 127 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 128 &rip_usrreqs 129}, 130{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 131 rsvp_input, 0, 0, rip_ctloutput, 132 0, 133 0, 0, 0, 0, 134 &rip_usrreqs 135}, 136{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 137 ipip_input, 0, 0, rip_ctloutput, 138 0, 139 0, 0, 0, 0, 140 &rip_usrreqs 141}, 142#ifdef IPDIVERT 143{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 144 div_input, 0, 0, ip_ctloutput, 145 0, 146 div_init, 0, 0, 0, 147 &div_usrreqs, 148}, 149#endif 150#ifdef TPIP 151{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 152 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 153 tp_usrreq, 154 tp_init, 0, tp_slowtimo, tp_drain, 155}, 156#endif 157/* EON (ISO CLNL over IP) */ 158#ifdef EON 159{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 160 eoninput, 0, eonctlinput, 0, 161 0, 162 eonprotoinit, 0, 0, 0, 163}, 164#endif 165#ifdef IPXIP 166{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 167 ipxip_input, 0, ipxip_ctlinput, 0, 168 0, 169 0, 0, 0, 0, 170 &rip_usrreqs 171}, 172#endif 173#ifdef NSIP 174{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 175 idpip_input, 0, nsip_ctlinput, 0, 176 0, 177 0, 0, 0, 0, 178 &rip_usrreqs 179}, 180#endif 181 /* raw wildcard */ 182{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 183 rip_input, 0, 0, rip_ctloutput, 184 0, 185 rip_init, 0, 0, 0, 186 &rip_usrreqs 187}, 188}; 189 190extern int in_inithead __P((void **, int)); 191 192struct domain inetdomain = 193 { AF_INET, "internet", 0, 0, 0, 194 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 195 in_inithead, 32, sizeof(struct sockaddr_in) 196 }; 197 198DOMAIN_SET(inet); 199 200SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 201 "Internet Family"); 202 203SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 204SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 205SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 206SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 207SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 208SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 209#ifdef IPDIVERT 210SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 211#endif 212 213