in_proto.c revision 44078
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 1.47 1998/08/23 03:07:14 wollman 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/queue.h> 46#include <sys/sysctl.h> 47 48#include <net/if.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/igmp_var.h> 57#include <netinet/tcp.h> 58#include <netinet/tcp_timer.h> 59#include <netinet/tcp_var.h> 60#include <netinet/udp.h> 61#include <netinet/udp_var.h> 62/* 63 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 64 */ 65 66#ifdef IPXIP 67#include <netipx/ipx_ip.h> 68#endif 69 70#ifdef NSIP 71#include <netns/ns.h> 72#include <netns/ns_if.h> 73#endif 74 75extern struct domain inetdomain; 76static struct pr_usrreqs nousrreqs; 77 78struct protosw inetsw[] = { 79{ 0, &inetdomain, 0, 0, 80 0, 0, 0, 0, 81 0, 82 ip_init, 0, ip_slowtimo, ip_drain, 83 &nousrreqs 84}, 85{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 86 udp_input, 0, udp_ctlinput, ip_ctloutput, 87 0, 88 udp_init, 0, 0, 0, 89 &udp_usrreqs 90}, 91{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 92 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 93 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 94 0, 95 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 96 &tcp_usrreqs 97}, 98{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 99 rip_input, 0, rip_ctlinput, rip_ctloutput, 100 0, 101 0, 0, 0, 0, 102 &rip_usrreqs 103}, 104{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 105 icmp_input, 0, 0, rip_ctloutput, 106 0, 107 0, 0, 0, 0, 108 &rip_usrreqs 109}, 110{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 111 igmp_input, 0, 0, rip_ctloutput, 112 0, 113 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 114 &rip_usrreqs 115}, 116{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 117 rsvp_input, 0, 0, rip_ctloutput, 118 0, 119 0, 0, 0, 0, 120 &rip_usrreqs 121}, 122{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 123 ipip_input, 0, 0, rip_ctloutput, 124 0, 125 0, 0, 0, 0, 126 &rip_usrreqs 127}, 128#ifdef IPDIVERT 129{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 130 div_input, 0, 0, ip_ctloutput, 131 0, 132 div_init, 0, 0, 0, 133 &div_usrreqs, 134}, 135#endif 136#ifdef TPIP 137{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 138 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 139 tp_usrreq, 140 tp_init, 0, tp_slowtimo, tp_drain, 141}, 142#endif 143/* EON (ISO CLNL over IP) */ 144#ifdef EON 145{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 146 eoninput, 0, eonctlinput, 0, 147 0, 148 eonprotoinit, 0, 0, 0, 149}, 150#endif 151#ifdef IPXIP 152{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 153 ipxip_input, 0, ipxip_ctlinput, 0, 154 0, 155 0, 0, 0, 0, 156 &rip_usrreqs 157}, 158#endif 159#ifdef NSIP 160{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 161 idpip_input, 0, nsip_ctlinput, 0, 162 0, 163 0, 0, 0, 0, 164 &rip_usrreqs 165}, 166#endif 167 /* raw wildcard */ 168{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 169 rip_input, 0, 0, rip_ctloutput, 170 0, 171 rip_init, 0, 0, 0, 172 &rip_usrreqs 173}, 174}; 175 176extern int in_inithead __P((void **, int)); 177 178struct domain inetdomain = 179 { AF_INET, "internet", 0, 0, 0, 180 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 181 in_inithead, 32, sizeof(struct sockaddr_in) 182 }; 183 184DOMAIN_SET(inet); 185 186SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 187 "Internet Family"); 188 189SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 190SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 191SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 192SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 193SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 194SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 195#ifdef IPDIVERT 196SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 197#endif 198 199