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: src/sys/netinet/in_proto.c,v 1.53.2.6 2003/01/24 05:11:34 sam Exp $ 35 * $DragonFly: src/sys/netinet/in_proto.c,v 1.2 2003/06/17 04:28:51 dillon Exp $ 36 */ 37 38 #include "opt_ipdivert.h" 39 #include "opt_ipx.h" 40 #include "opt_ipsec.h" 41 #include "opt_inet6.h" 42 43 #include <sys/param.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/domain.h> 47 #include <sys/protosw.h> 48 #include <sys/queue.h> 49 #include <sys/sysctl.h> 50 51 #include <net/if.h> 52 #include <net/route.h> 53 54 #include <netinet/in.h> 55 #include <netinet/in_systm.h> 56 #include <netinet/ip.h> 57 #include <netinet/ip_var.h> 58 #include <netinet/ip_icmp.h> 59 #include <netinet/igmp_var.h> 60 #include <netinet/tcp.h> 61 #include <netinet/tcp_timer.h> 62 #include <netinet/tcp_var.h> 63 #include <netinet/udp.h> 64 #include <netinet/udp_var.h> 65 #include <netinet/ip_encap.h> 66 67 #include <netinet/ipprotosw.h> 68 69 /* 70 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 71 */ 72 73 #ifdef IPSEC 74 #include <netinet6/ipsec.h> 75 #include <netinet6/ah.h> 76 #ifdef IPSEC_ESP 77 #include <netinet6/esp.h> 78 #endif 79 #include <netinet6/ipcomp.h> 80 #endif /* IPSEC */ 81 82 #ifdef FAST_IPSEC 83 #include <netipsec/ipsec.h> 84 #endif /* FAST_IPSEC */ 85 86 #ifdef IPXIP 87 #include <netipx/ipx_ip.h> 88 #endif 89 90 #ifdef NSIP 91 #include <netns/ns.h> 92 #include <netns/ns_if.h> 93 #endif 94 95 extern struct domain inetdomain; 96 static struct pr_usrreqs nousrreqs; 97 98 struct ipprotosw inetsw[] = { 99 { 0, &inetdomain, 0, 0, 100 0, 0, 0, 0, 101 0, 102 ip_init, 0, ip_slowtimo, ip_drain, 103 &nousrreqs 104 }, 105 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 106 udp_input, 0, udp_ctlinput, ip_ctloutput, 107 0, 108 udp_init, 0, 0, 0, 109 &udp_usrreqs 110 }, 111 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 112 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 113 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 114 0, 115 tcp_init, 0, tcp_slowtimo, tcp_drain, 116 &tcp_usrreqs 117 }, 118 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 119 rip_input, 0, rip_ctlinput, rip_ctloutput, 120 0, 121 0, 0, 0, 0, 122 &rip_usrreqs 123 }, 124 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 125 icmp_input, 0, 0, rip_ctloutput, 126 0, 127 0, 0, 0, 0, 128 &rip_usrreqs 129 }, 130 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 131 igmp_input, 0, 0, rip_ctloutput, 132 0, 133 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 134 &rip_usrreqs 135 }, 136 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 137 rsvp_input, 0, 0, rip_ctloutput, 138 0, 139 0, 0, 0, 0, 140 &rip_usrreqs 141 }, 142 #ifdef IPSEC 143 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 144 ah4_input, 0, 0, 0, 145 0, 146 0, 0, 0, 0, 147 &nousrreqs 148 }, 149 #ifdef IPSEC_ESP 150 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 151 esp4_input, 0, 0, 0, 152 0, 153 0, 0, 0, 0, 154 &nousrreqs 155 }, 156 #endif 157 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 158 ipcomp4_input, 0, 0, 0, 159 0, 160 0, 0, 0, 0, 161 &nousrreqs 162 }, 163 #endif /* IPSEC */ 164 #ifdef FAST_IPSEC 165 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 166 ipsec4_common_input, 0, 0, 0, 167 0, 168 0, 0, 0, 0, 169 &nousrreqs 170 }, 171 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 172 ipsec4_common_input, 0, 0, 0, 173 0, 174 0, 0, 0, 0, 175 &nousrreqs 176 }, 177 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 178 ipsec4_common_input, 0, 0, 0, 179 0, 180 0, 0, 0, 0, 181 &nousrreqs 182 }, 183 #endif /* FAST_IPSEC */ 184 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 185 encap4_input, 0, 0, rip_ctloutput, 186 0, 187 encap_init, 0, 0, 0, 188 &rip_usrreqs 189 }, 190 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 191 encap4_input, 0, 0, rip_ctloutput, 192 0, 193 encap_init, 0, 0, 0, 194 &rip_usrreqs 195 }, 196 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 197 encap4_input, 0, 0, rip_ctloutput, 198 0, 199 encap_init, 0, 0, 0, 200 &rip_usrreqs 201 }, 202 # ifdef INET6 203 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 204 encap4_input, 0, 0, rip_ctloutput, 205 0, 206 encap_init, 0, 0, 0, 207 &rip_usrreqs 208 }, 209 #endif 210 #ifdef IPDIVERT 211 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 212 div_input, 0, 0, ip_ctloutput, 213 0, 214 div_init, 0, 0, 0, 215 &div_usrreqs, 216 }, 217 #endif 218 #ifdef IPXIP 219 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 220 ipxip_input, 0, ipxip_ctlinput, 0, 221 0, 222 0, 0, 0, 0, 223 &rip_usrreqs 224 }, 225 #endif 226 #ifdef NSIP 227 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 228 idpip_input, 0, nsip_ctlinput, 0, 229 0, 230 0, 0, 0, 0, 231 &rip_usrreqs 232 }, 233 #endif 234 /* raw wildcard */ 235 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 236 rip_input, 0, 0, rip_ctloutput, 237 0, 238 rip_init, 0, 0, 0, 239 &rip_usrreqs 240 }, 241 }; 242 243 extern int in_inithead __P((void **, int)); 244 245 struct domain inetdomain = 246 { AF_INET, "internet", 0, 0, 0, 247 (struct protosw *)inetsw, 248 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 249 in_inithead, 32, sizeof(struct sockaddr_in) 250 }; 251 252 DOMAIN_SET(inet); 253 254 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 255 "Internet Family"); 256 257 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 258 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 259 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 260 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 261 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 262 #ifdef FAST_IPSEC 263 /* XXX no protocol # to use, pick something "reserved" */ 264 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 265 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 266 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 267 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 268 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 269 #else 270 #ifdef IPSEC 271 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 272 #endif /* IPSEC */ 273 #endif /* !FAST_IPSEC */ 274 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 275 #ifdef IPDIVERT 276 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 277 #endif 278 279