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 1.53.2.7 2003/08/24 08:24:38 hsu Exp $ 35 * $DragonFly: src/sys/netinet/in_proto.c,v 1.5 2003/08/24 23:07:07 hsu Exp $ 36 */ 37 38 #include "opt_ipdivert.h" 39 #include "opt_ipx.h" 40 #include "opt_mrouting.h" 41 #include "opt_ipsec.h" 42 #include "opt_inet6.h" 43 44 #include <sys/param.h> 45 #include <sys/kernel.h> 46 #include <sys/socket.h> 47 #include <sys/domain.h> 48 #include <sys/protosw.h> 49 #include <sys/queue.h> 50 #include <sys/sysctl.h> 51 52 #include <net/if.h> 53 #include <net/route.h> 54 55 #include <netinet/in.h> 56 #include <netinet/in_systm.h> 57 #include <netinet/ip.h> 58 #include <netinet/ip_var.h> 59 #include <netinet/ip_icmp.h> 60 #include <netinet/igmp_var.h> 61 #ifdef PIM 62 #include <netinet/pim_var.h> 63 #endif 64 #include <netinet/tcp.h> 65 #include <netinet/tcp_timer.h> 66 #include <netinet/tcp_var.h> 67 #include <netinet/udp.h> 68 #include <netinet/udp_var.h> 69 #include <netinet/ip_encap.h> 70 71 #include <netinet/ipprotosw.h> 72 73 /* 74 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 75 */ 76 77 #ifdef IPSEC 78 #include <netinet6/ipsec.h> 79 #include <netinet6/ah.h> 80 #ifdef IPSEC_ESP 81 #include <netinet6/esp.h> 82 #endif 83 #include <netinet6/ipcomp.h> 84 #endif /* IPSEC */ 85 86 #ifdef FAST_IPSEC 87 #include <netipsec/ipsec.h> 88 #endif /* FAST_IPSEC */ 89 90 #ifdef IPXIP 91 #include <netproto/ipx/ipx_ip.h> 92 #endif 93 94 #ifdef NSIP 95 #include <netns/ns.h> 96 #include <netns/ns_if.h> 97 #endif 98 99 extern struct domain inetdomain; 100 static struct pr_usrreqs nousrreqs; 101 102 struct ipprotosw inetsw[] = { 103 { 0, &inetdomain, 0, 0, 104 0, 0, 0, 0, 105 0, 106 ip_init, 0, ip_slowtimo, ip_drain, 107 &nousrreqs 108 }, 109 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 110 udp_input, 0, udp_ctlinput, ip_ctloutput, 111 0, 112 udp_init, 0, 0, 0, 113 &udp_usrreqs 114 }, 115 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 116 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 117 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 118 0, 119 tcp_init, 0, tcp_slowtimo, tcp_drain, 120 &tcp_usrreqs 121 }, 122 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 123 rip_input, 0, rip_ctlinput, rip_ctloutput, 124 0, 125 0, 0, 0, 0, 126 &rip_usrreqs 127 }, 128 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 129 icmp_input, 0, 0, rip_ctloutput, 130 0, 131 0, 0, 0, 0, 132 &rip_usrreqs 133 }, 134 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 135 igmp_input, 0, 0, rip_ctloutput, 136 0, 137 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 138 &rip_usrreqs 139 }, 140 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 141 rsvp_input, 0, 0, rip_ctloutput, 142 0, 143 0, 0, 0, 0, 144 &rip_usrreqs 145 }, 146 #ifdef IPSEC 147 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 148 ah4_input, 0, 0, 0, 149 0, 150 0, 0, 0, 0, 151 &nousrreqs 152 }, 153 #ifdef IPSEC_ESP 154 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 155 esp4_input, 0, 0, 0, 156 0, 157 0, 0, 0, 0, 158 &nousrreqs 159 }, 160 #endif 161 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 162 ipcomp4_input, 0, 0, 0, 163 0, 164 0, 0, 0, 0, 165 &nousrreqs 166 }, 167 #endif /* IPSEC */ 168 #ifdef FAST_IPSEC 169 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 170 ipsec4_common_input, 0, 0, 0, 171 0, 172 0, 0, 0, 0, 173 &nousrreqs 174 }, 175 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 176 ipsec4_common_input, 0, 0, 0, 177 0, 178 0, 0, 0, 0, 179 &nousrreqs 180 }, 181 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 182 ipsec4_common_input, 0, 0, 0, 183 0, 184 0, 0, 0, 0, 185 &nousrreqs 186 }, 187 #endif /* FAST_IPSEC */ 188 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 189 encap4_input, 0, 0, rip_ctloutput, 190 0, 191 encap_init, 0, 0, 0, 192 &rip_usrreqs 193 }, 194 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 195 encap4_input, 0, 0, rip_ctloutput, 196 0, 197 encap_init, 0, 0, 0, 198 &rip_usrreqs 199 }, 200 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 201 encap4_input, 0, 0, rip_ctloutput, 202 0, 203 encap_init, 0, 0, 0, 204 &rip_usrreqs 205 }, 206 # ifdef INET6 207 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 208 encap4_input, 0, 0, rip_ctloutput, 209 0, 210 encap_init, 0, 0, 0, 211 &rip_usrreqs 212 }, 213 #endif 214 #ifdef IPDIVERT 215 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 216 div_input, 0, 0, ip_ctloutput, 217 0, 218 div_init, 0, 0, 0, 219 &div_usrreqs, 220 }, 221 #endif 222 #ifdef IPXIP 223 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 224 ipxip_input, 0, ipxip_ctlinput, 0, 225 0, 226 0, 0, 0, 0, 227 &rip_usrreqs 228 }, 229 #endif 230 #ifdef NSIP 231 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 232 idpip_input, 0, nsip_ctlinput, 0, 233 0, 234 0, 0, 0, 0, 235 &rip_usrreqs 236 }, 237 #endif 238 #ifdef PIM 239 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 240 pim_input, 0, 0, rip_ctloutput, 241 0, 242 0, 0, 0, 0, 243 &rip_usrreqs 244 }, 245 #endif 246 /* raw wildcard */ 247 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 248 rip_input, 0, 0, rip_ctloutput, 249 0, 250 rip_init, 0, 0, 0, 251 &rip_usrreqs 252 }, 253 }; 254 255 extern int in_inithead (void **, int); 256 257 struct domain inetdomain = 258 { AF_INET, "internet", 0, 0, 0, 259 (struct protosw *)inetsw, 260 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 261 in_inithead, 32, sizeof(struct sockaddr_in) 262 }; 263 264 DOMAIN_SET(inet); 265 266 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 267 "Internet Family"); 268 269 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 270 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 271 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 272 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 273 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 274 #ifdef FAST_IPSEC 275 /* XXX no protocol # to use, pick something "reserved" */ 276 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 277 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 278 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 279 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 280 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 281 #else 282 #ifdef IPSEC 283 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 284 #endif /* IPSEC */ 285 #endif /* !FAST_IPSEC */ 286 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 287 #ifdef IPDIVERT 288 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 289 #endif 290 #ifdef PIM 291 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 292 #endif 293