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 #include "opt_ipsec.h" 40 #include "opt_inet6.h" 41 42 #include <sys/param.h> 43 #include <sys/kernel.h> 44 #include <sys/socket.h> 45 #include <sys/domain.h> 46 #include <sys/protosw.h> 47 #include <sys/queue.h> 48 #include <sys/sysctl.h> 49 50 #include <net/if.h> 51 #include <net/route.h> 52 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/ip.h> 56 #include <netinet/ip_var.h> 57 #include <netinet/ip_icmp.h> 58 #include <netinet/igmp_var.h> 59 #include <netinet/tcp.h> 60 #include <netinet/tcp_timer.h> 61 #include <netinet/tcp_var.h> 62 #include <netinet/udp.h> 63 #include <netinet/udp_var.h> 64 65 #include <netinet/ipprotosw.h> 66 67 /* 68 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 69 */ 70 71 #ifdef IPSEC 72 #include <netinet6/ipsec.h> 73 #include <netinet6/ah.h> 74 #ifdef IPSEC_ESP 75 #include <netinet6/esp.h> 76 #endif 77 #endif /* IPSEC */ 78 79 #include "gif.h" 80 #if NGIF > 0 81 #include <netinet/in_gif.h> 82 #endif 83 84 #ifdef IPXIP 85 #include <netipx/ipx_ip.h> 86 #endif 87 88 #ifdef NSIP 89 #include <netns/ns.h> 90 #include <netns/ns_if.h> 91 #endif 92 93 extern struct domain inetdomain; 94 static struct pr_usrreqs nousrreqs; 95 96 struct ipprotosw inetsw[] = { 97 { 0, &inetdomain, 0, 0, 98 0, 0, 0, 0, 99 0, 100 ip_init, 0, ip_slowtimo, ip_drain, 101 &nousrreqs 102 }, 103 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 104 udp_input, 0, udp_ctlinput, ip_ctloutput, 105 0, 106 udp_init, 0, 0, 0, 107 &udp_usrreqs 108 }, 109 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 110 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 111 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 112 0, 113 tcp_init, 0, tcp_slowtimo, tcp_drain, 114 &tcp_usrreqs 115 }, 116 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 117 rip_input, 0, rip_ctlinput, rip_ctloutput, 118 0, 119 0, 0, 0, 0, 120 &rip_usrreqs 121 }, 122 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 123 icmp_input, 0, 0, rip_ctloutput, 124 0, 125 0, 0, 0, 0, 126 &rip_usrreqs 127 }, 128 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 129 igmp_input, 0, 0, rip_ctloutput, 130 0, 131 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 132 &rip_usrreqs 133 }, 134 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 135 rsvp_input, 0, 0, rip_ctloutput, 136 0, 137 0, 0, 0, 0, 138 &rip_usrreqs 139 }, 140 #ifdef IPSEC 141 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 142 ah4_input, 0, 0, 0, 143 0, 144 0, 0, 0, 0, 145 &nousrreqs 146 }, 147 #ifdef IPSEC_ESP 148 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 149 esp4_input, 0, 0, 0, 150 0, 151 0, 0, 0, 0, 152 &nousrreqs 153 }, 154 #endif 155 #endif /* IPSEC */ 156 #if NGIF > 0 157 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, 158 in_gif_input, 0, 0, 0, 159 0, 160 0, 0, 0, 0, 161 &nousrreqs 162 }, 163 # ifdef INET6 164 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 165 in_gif_input, 0, 0, 0, 166 0, 167 0, 0, 0, 0, 168 &nousrreqs 169 }, 170 #endif 171 #else /*NGIF*/ 172 { SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 173 ipip_input, 0, 0, rip_ctloutput, 174 0, 175 0, 0, 0, 0, 176 &rip_usrreqs 177 }, 178 #endif /*NGIF*/ 179 #ifdef IPDIVERT 180 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 181 div_input, 0, 0, ip_ctloutput, 182 0, 183 div_init, 0, 0, 0, 184 &div_usrreqs, 185 }, 186 #endif 187 #ifdef IPXIP 188 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 189 ipxip_input, 0, ipxip_ctlinput, 0, 190 0, 191 0, 0, 0, 0, 192 &rip_usrreqs 193 }, 194 #endif 195 #ifdef NSIP 196 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 197 idpip_input, 0, nsip_ctlinput, 0, 198 0, 199 0, 0, 0, 0, 200 &rip_usrreqs 201 }, 202 #endif 203 /* raw wildcard */ 204 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 205 rip_input, 0, 0, rip_ctloutput, 206 0, 207 rip_init, 0, 0, 0, 208 &rip_usrreqs 209 }, 210 }; 211 212 extern int in_inithead __P((void **, int)); 213 214 struct domain inetdomain = 215 { AF_INET, "internet", 0, 0, 0, 216 (struct protosw *)inetsw, 217 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 218 in_inithead, 32, sizeof(struct sockaddr_in) 219 }; 220 221 DOMAIN_SET(inet); 222 223 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 224 "Internet Family"); 225 226 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 227 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 228 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 229 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 230 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 231 #ifdef IPSEC 232 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 233 #endif /* IPSEC */ 234 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 235 #ifdef IPDIVERT 236 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 237 #endif 238 239