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 1.46 1998/03/21 11:33:57 peter 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 extern struct domain inetdomain; 75 static struct pr_usrreqs nousrreqs; 76 77 struct protosw inetsw[] = { 78 { 0, &inetdomain, 0, 0, 79 0, 0, 0, 0, 80 0, 81 ip_init, 0, ip_slowtimo, ip_drain, 82 &nousrreqs 83 }, 84 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 85 udp_input, 0, udp_ctlinput, ip_ctloutput, 86 0, 87 udp_init, 0, 0, 0, 88 &udp_usrreqs 89 }, 90 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 91 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 92 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 93 0, 94 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 95 &tcp_usrreqs 96 }, 97 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 98 rip_input, 0, rip_ctlinput, rip_ctloutput, 99 0, 100 0, 0, 0, 0, 101 &rip_usrreqs 102 }, 103 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 104 icmp_input, 0, 0, rip_ctloutput, 105 0, 106 0, 0, 0, 0, 107 &rip_usrreqs 108 }, 109 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 110 igmp_input, 0, 0, rip_ctloutput, 111 0, 112 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 113 &rip_usrreqs 114 }, 115 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 116 rsvp_input, 0, 0, rip_ctloutput, 117 0, 118 0, 0, 0, 0, 119 &rip_usrreqs 120 }, 121 { SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 122 ipip_input, 0, 0, rip_ctloutput, 123 0, 124 0, 0, 0, 0, 125 &rip_usrreqs 126 }, 127 #ifdef IPDIVERT 128 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 129 div_input, 0, 0, ip_ctloutput, 130 0, 131 div_init, 0, 0, 0, 132 &div_usrreqs, 133 }, 134 #endif 135 #ifdef TPIP 136 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 137 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 138 tp_usrreq, 139 tp_init, 0, tp_slowtimo, tp_drain, 140 }, 141 #endif 142 /* EON (ISO CLNL over IP) */ 143 #ifdef EON 144 { SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 145 eoninput, 0, eonctlinput, 0, 146 0, 147 eonprotoinit, 0, 0, 0, 148 }, 149 #endif 150 #ifdef IPXIP 151 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 152 ipxip_input, 0, ipxip_ctlinput, 0, 153 0, 154 0, 0, 0, 0, 155 &rip_usrreqs 156 }, 157 #endif 158 #ifdef NSIP 159 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 160 idpip_input, 0, nsip_ctlinput, 0, 161 0, 162 0, 0, 0, 0, 163 &rip_usrreqs 164 }, 165 #endif 166 /* raw wildcard */ 167 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 168 rip_input, 0, 0, rip_ctloutput, 169 0, 170 rip_init, 0, 0, 0, 171 &rip_usrreqs 172 }, 173 }; 174 175 extern int in_inithead __P((void **, int)); 176 177 struct domain inetdomain = 178 { AF_INET, "internet", 0, 0, 0, 179 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 180 in_inithead, 32, sizeof(struct sockaddr_in) 181 }; 182 183 DOMAIN_SET(inet); 184 185 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 186 "Internet Family"); 187 188 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 189 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 190 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 191 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 192 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 193 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 194 #ifdef IPDIVERT 195 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 196 #endif 197 198