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 * $FreeBSD$ 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 75 extern struct domain inetdomain; 76 static struct pr_usrreqs nousrreqs; 77 78 struct 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, 0, 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 }; 175 176 extern int in_inithead __P((void **, int)); 177 178 struct 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 }; 183 184 DOMAIN_SET(inet); 185 186 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 187 "Internet Family"); 188 189 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 190 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 191 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 192 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 193 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 194 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 195 #ifdef IPDIVERT 196 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 197 #endif 198 199