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 #include "gif.h" 67 #if NGIF > 0 68 #include <netinet/in_gif.h> 69 #endif 70 71 #ifdef IPXIP 72 #include <netipx/ipx_ip.h> 73 #endif 74 75 #ifdef NSIP 76 #include <netns/ns.h> 77 #include <netns/ns_if.h> 78 #endif 79 80 extern struct domain inetdomain; 81 static struct pr_usrreqs nousrreqs; 82 83 struct protosw inetsw[] = { 84 { 0, &inetdomain, 0, 0, 85 0, 0, 0, 0, 86 0, 87 ip_init, 0, ip_slowtimo, ip_drain, 88 &nousrreqs 89 }, 90 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 91 udp_input, 0, udp_ctlinput, ip_ctloutput, 92 0, 93 udp_init, 0, 0, 0, 94 &udp_usrreqs 95 }, 96 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 97 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 98 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 99 0, 100 tcp_init, 0, tcp_slowtimo, tcp_drain, 101 &tcp_usrreqs 102 }, 103 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 104 rip_input, 0, rip_ctlinput, rip_ctloutput, 105 0, 106 0, 0, 0, 0, 107 &rip_usrreqs 108 }, 109 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 110 icmp_input, 0, 0, rip_ctloutput, 111 0, 112 0, 0, 0, 0, 113 &rip_usrreqs 114 }, 115 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 116 igmp_input, 0, 0, rip_ctloutput, 117 0, 118 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 119 &rip_usrreqs 120 }, 121 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 122 rsvp_input, 0, 0, rip_ctloutput, 123 0, 124 0, 0, 0, 0, 125 &rip_usrreqs 126 }, 127 #if NGIF > 0 128 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, 129 in_gif_input, 0, 0, 0, 130 0, 131 0, 0, 0, 0, 132 &nousrreqs 133 }, 134 # ifdef INET6 135 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 136 in_gif_input, 0, 0, 0, 137 0, 138 0, 0, 0, 0, 139 &nousrreqs 140 }, 141 #endif 142 #else /*NGIF*/ 143 { SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 144 ipip_input, 0, 0, rip_ctloutput, 145 0, 146 0, 0, 0, 0, 147 &rip_usrreqs 148 }, 149 #endif /*NGIF*/ 150 #ifdef IPDIVERT 151 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 152 div_input, 0, 0, ip_ctloutput, 153 0, 154 div_init, 0, 0, 0, 155 &div_usrreqs, 156 }, 157 #endif 158 #ifdef TPIP 159 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 160 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 161 tp_usrreq, 162 tp_init, 0, tp_slowtimo, tp_drain, 163 }, 164 #endif 165 /* EON (ISO CLNL over IP) */ 166 #ifdef EON 167 { SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 168 eoninput, 0, eonctlinput, 0, 169 0, 170 eonprotoinit, 0, 0, 0, 171 }, 172 #endif 173 #ifdef IPXIP 174 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 175 ipxip_input, 0, ipxip_ctlinput, 0, 176 0, 177 0, 0, 0, 0, 178 &rip_usrreqs 179 }, 180 #endif 181 #ifdef NSIP 182 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 183 idpip_input, 0, nsip_ctlinput, 0, 184 0, 185 0, 0, 0, 0, 186 &rip_usrreqs 187 }, 188 #endif 189 /* raw wildcard */ 190 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 191 rip_input, 0, 0, rip_ctloutput, 192 0, 193 rip_init, 0, 0, 0, 194 &rip_usrreqs 195 }, 196 }; 197 198 extern int in_inithead __P((void **, int)); 199 200 struct domain inetdomain = 201 { AF_INET, "internet", 0, 0, 0, 202 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 203 in_inithead, 32, sizeof(struct sockaddr_in) 204 }; 205 206 DOMAIN_SET(inet); 207 208 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 209 "Internet Family"); 210 211 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 212 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 213 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 214 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 215 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 216 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 217 #ifdef IPDIVERT 218 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 219 #endif 220 221