in_proto.c revision 22719
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 * $FreeBSD: head/sys/netinet/in_proto.c 22719 1997-02-14 18:15:53Z wollman $ 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; 99 100struct protosw inetsw[] = { 101{ 0, &inetdomain, 0, 0, 102 0, 0, 0, 0, 103 0, 104 ip_init, 0, ip_slowtimo, ip_drain 105}, 106{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 107 udp_input, 0, udp_ctlinput, ip_ctloutput, 108 0, 109 udp_init, 0, 0, 0, 110 &udp_usrreqs 111}, 112{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, 113 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 114 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 115 0, 116 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 117 &tcp_usrreqs 118}, 119{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 120 rip_input, 0, rip_ctlinput, rip_ctloutput, 121 rip_usrreq, 122 0, 0, 0, 0, 123}, 124{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 125 icmp_input, 0, 0, rip_ctloutput, 126 rip_usrreq 127}, 128{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 129 igmp_input, 0, 0, rip_ctloutput, 130 rip_usrreq, 131 igmp_init, igmp_fasttimo, igmp_slowtimo 132}, 133{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 134 rsvp_input, 0, 0, rip_ctloutput, 135 rip_usrreq, 136 0, 0, 0, 0, 137}, 138{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 139 ipip_input, 0, 0, rip_ctloutput, 140 rip_usrreq, 141 0, 0, 0, 0, 142}, 143#ifdef IPDIVERT 144{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 145 div_input, 0, 0, ip_ctloutput, 146 div_usrreq, 147 div_init, 0, 0, 0, 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 rip_usrreq, 169 0, 0, 0, 0, 170}, 171#endif 172#ifdef NSIP 173{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 174 idpip_input, 0, nsip_ctlinput, 0, 175 rip_usrreq, 176 0, 0, 0, 0, 177}, 178#endif 179 /* raw wildcard */ 180{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 181 rip_input, 0, 0, rip_ctloutput, 182 rip_usrreq, 183 rip_init, 0, 0, 0, 184}, 185}; 186 187extern int in_inithead(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"); 205#ifdef IPDIVERT 206SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 207#endif 208 209