in_proto.c revision 30813
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 1.42 1997/09/16 18:36:04 joerg Exp $ 35 */ 36 37#include <sys/param.h> 38#include <sys/kernel.h> 39#include <sys/socket.h> 40#include <sys/domain.h> 41#include <sys/protosw.h> 42#include <sys/sysctl.h> 43 44#include <net/if.h> 45#include <net/route.h> 46 47#include <netinet/in.h> 48#include <netinet/in_systm.h> 49#include <netinet/ip.h> 50#include <netinet/ip_var.h> 51#include <netinet/ip_icmp.h> 52#include <netinet/igmp_var.h> 53#include <netinet/tcp.h> 54#include <netinet/tcp_timer.h> 55#include <netinet/tcp_var.h> 56#include <netinet/udp.h> 57#include <netinet/udp_var.h> 58/* 59 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 60 */ 61 62#ifdef IPXIP 63#include <netipx/ipx_ip.h> 64#endif 65 66#ifdef NSIP 67#include <netns/ns.h> 68#include <netns/ns_if.h> 69#endif 70 71#ifdef TPIP 72void tpip_input(), tpip_ctlinput(), tp_init(), tp_slowtimo(), tp_drain(); 73int tp_ctloutput(), tp_usrreq(); 74#endif 75 76#ifdef EON 77void eoninput(), eonctlinput(), eonprotoinit(); 78#endif /* EON */ 79 80#ifdef IPFILTER 81void iplinit(); 82#define ip_init iplinit 83#endif 84 85 86extern struct domain inetdomain; 87static struct pr_usrreqs nousrreqs; 88 89struct protosw inetsw[] = { 90{ 0, &inetdomain, 0, 0, 91 0, 0, 0, 0, 92 0, 93 ip_init, 0, ip_slowtimo, ip_drain, 94 &nousrreqs 95}, 96{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 97 udp_input, 0, udp_ctlinput, ip_ctloutput, 98 0, 99 udp_init, 0, 0, 0, 100 &udp_usrreqs 101}, 102{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 103 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 104 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 105 0, 106 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 107 &tcp_usrreqs 108}, 109{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 110 rip_input, 0, rip_ctlinput, rip_ctloutput, 111 0, 112 0, 0, 0, 0, 113 &rip_usrreqs 114}, 115{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 116 icmp_input, 0, 0, rip_ctloutput, 117 0, 118 0, 0, 0, 0, 119 &rip_usrreqs 120}, 121{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 122 igmp_input, 0, 0, rip_ctloutput, 123 0, 124 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 125 &rip_usrreqs 126}, 127{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 128 rsvp_input, 0, 0, rip_ctloutput, 129 0, 130 0, 0, 0, 0, 131 &rip_usrreqs 132}, 133{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 134 ipip_input, 0, 0, rip_ctloutput, 135 0, 136 0, 0, 0, 0, 137 &rip_usrreqs 138}, 139#ifdef IPDIVERT 140{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 141 div_input, 0, 0, ip_ctloutput, 142 0, 143 div_init, 0, 0, 0, 144 &div_usrreqs, 145}, 146#endif 147#ifdef TPIP 148{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 149 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 150 tp_usrreq, 151 tp_init, 0, tp_slowtimo, tp_drain, 152}, 153#endif 154/* EON (ISO CLNL over IP) */ 155#ifdef EON 156{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 157 eoninput, 0, eonctlinput, 0, 158 0, 159 eonprotoinit, 0, 0, 0, 160}, 161#endif 162#ifdef IPXIP 163{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 164 ipxip_input, 0, ipxip_ctlinput, 0, 165 0, 166 0, 0, 0, 0, 167 &rip_usrreqs 168}, 169#endif 170#ifdef NSIP 171{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 172 idpip_input, 0, nsip_ctlinput, 0, 173 0, 174 0, 0, 0, 0, 175 &rip_usrreqs 176}, 177#endif 178 /* raw wildcard */ 179{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 180 rip_input, 0, 0, rip_ctloutput, 181 0, 182 rip_init, 0, 0, 0, 183 &rip_usrreqs 184}, 185}; 186 187extern int in_inithead __P((void **, int)); 188 189struct domain inetdomain = 190 { AF_INET, "internet", 0, 0, 0, 191 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 192 in_inithead, 32, sizeof(struct sockaddr_in) 193 }; 194 195DOMAIN_SET(inet); 196 197SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 198 "Internet Family"); 199 200SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 201SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 202SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 203SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 204SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 205SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 206#ifdef IPDIVERT 207SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 208#endif 209 210