in_proto.c revision 30966
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 1.43 1997/10/28 15:58:43 bde Exp $ 35 */ 36 37#include "opt_ipdivert.h" 38 39#include <sys/param.h> 40#include <sys/kernel.h> 41#include <sys/socket.h> 42#include <sys/domain.h> 43#include <sys/protosw.h> 44#include <sys/sysctl.h> 45 46#include <net/if.h> 47#include <net/route.h> 48 49#include <netinet/in.h> 50#include <netinet/in_systm.h> 51#include <netinet/ip.h> 52#include <netinet/ip_var.h> 53#include <netinet/ip_icmp.h> 54#include <netinet/igmp_var.h> 55#include <netinet/tcp.h> 56#include <netinet/tcp_timer.h> 57#include <netinet/tcp_var.h> 58#include <netinet/udp.h> 59#include <netinet/udp_var.h> 60/* 61 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 62 */ 63 64#ifdef IPXIP 65#include <netipx/ipx_ip.h> 66#endif 67 68#ifdef NSIP 69#include <netns/ns.h> 70#include <netns/ns_if.h> 71#endif 72 73#ifdef TPIP 74void tpip_input(), tpip_ctlinput(), tp_init(), tp_slowtimo(), tp_drain(); 75int tp_ctloutput(), tp_usrreq(); 76#endif 77 78#ifdef EON 79void eoninput(), eonctlinput(), eonprotoinit(); 80#endif /* EON */ 81 82#ifdef IPFILTER 83void iplinit(); 84#define ip_init iplinit 85#endif 86 87 88extern struct domain inetdomain; 89static struct pr_usrreqs nousrreqs; 90 91struct protosw inetsw[] = { 92{ 0, &inetdomain, 0, 0, 93 0, 0, 0, 0, 94 0, 95 ip_init, 0, ip_slowtimo, ip_drain, 96 &nousrreqs 97}, 98{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 99 udp_input, 0, udp_ctlinput, ip_ctloutput, 100 0, 101 udp_init, 0, 0, 0, 102 &udp_usrreqs 103}, 104{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 105 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 106 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 107 0, 108 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 109 &tcp_usrreqs 110}, 111{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 112 rip_input, 0, rip_ctlinput, rip_ctloutput, 113 0, 114 0, 0, 0, 0, 115 &rip_usrreqs 116}, 117{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 118 icmp_input, 0, 0, rip_ctloutput, 119 0, 120 0, 0, 0, 0, 121 &rip_usrreqs 122}, 123{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 124 igmp_input, 0, 0, rip_ctloutput, 125 0, 126 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 127 &rip_usrreqs 128}, 129{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 130 rsvp_input, 0, 0, rip_ctloutput, 131 0, 132 0, 0, 0, 0, 133 &rip_usrreqs 134}, 135{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 136 ipip_input, 0, 0, rip_ctloutput, 137 0, 138 0, 0, 0, 0, 139 &rip_usrreqs 140}, 141#ifdef IPDIVERT 142{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 143 div_input, 0, 0, ip_ctloutput, 144 0, 145 div_init, 0, 0, 0, 146 &div_usrreqs, 147}, 148#endif 149#ifdef TPIP 150{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 151 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 152 tp_usrreq, 153 tp_init, 0, tp_slowtimo, tp_drain, 154}, 155#endif 156/* EON (ISO CLNL over IP) */ 157#ifdef EON 158{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 159 eoninput, 0, eonctlinput, 0, 160 0, 161 eonprotoinit, 0, 0, 0, 162}, 163#endif 164#ifdef IPXIP 165{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 166 ipxip_input, 0, ipxip_ctlinput, 0, 167 0, 168 0, 0, 0, 0, 169 &rip_usrreqs 170}, 171#endif 172#ifdef NSIP 173{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 174 idpip_input, 0, nsip_ctlinput, 0, 175 0, 176 0, 0, 0, 0, 177 &rip_usrreqs 178}, 179#endif 180 /* raw wildcard */ 181{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 182 rip_input, 0, 0, rip_ctloutput, 183 0, 184 rip_init, 0, 0, 0, 185 &rip_usrreqs 186}, 187}; 188 189extern int in_inithead __P((void **, int)); 190 191struct domain inetdomain = 192 { AF_INET, "internet", 0, 0, 0, 193 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 194 in_inithead, 32, sizeof(struct sockaddr_in) 195 }; 196 197DOMAIN_SET(inet); 198 199SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 200 "Internet Family"); 201 202SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 203SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 204SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 205SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 206SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 207SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 208#ifdef IPDIVERT 209SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 210#endif 211 212