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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 30 * $FreeBSD: src/sys/netinet/in_proto.c,v 1.53.2.7 2003/08/24 08:24:38 hsu Exp $ 31 */ 32 33 #include "opt_ipdivert.h" 34 #include "opt_mrouting.h" 35 #include "opt_inet6.h" 36 #include "opt_carp.h" 37 38 #include <sys/param.h> 39 #include <sys/kernel.h> 40 #include <sys/socket.h> 41 #include <sys/domain.h> 42 #include <sys/protosw.h> 43 #include <sys/queue.h> 44 #include <sys/sysctl.h> 45 46 #include <net/if.h> 47 #include <net/route.h> 48 49 #include <netinet/in.h> 50 #include <netinet/in_systm.h> 51 #include <netinet/in_pcb.h> 52 #include <netinet/ip.h> 53 #include <netinet/ip_var.h> 54 #include <netinet/ip_icmp.h> 55 #include <netinet/igmp_var.h> 56 #ifdef PIM 57 #include <netinet/pim_var.h> 58 #endif 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 #include <netinet/ip_encap.h> 65 #ifdef IPDIVERT 66 #include <netinet/ip_divert.h> 67 #endif 68 69 /* 70 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 71 */ 72 73 #include <net/netisr.h> /* for cpu0_soport */ 74 75 #ifdef CARP 76 #include <netinet/ip_carp.h> 77 #endif 78 79 extern struct domain inetdomain; 80 static struct pr_usrreqs nousrreqs; 81 82 struct protosw inetsw[] = { 83 { 84 .pr_type = 0, 85 .pr_domain = &inetdomain, 86 .pr_protocol = 0, 87 .pr_flags = 0, 88 89 .pr_ctlport = NULL, 90 91 .pr_init = ip_init, 92 .pr_drain = ip_drain, 93 .pr_usrreqs = &nousrreqs 94 }, 95 { 96 .pr_type = SOCK_DGRAM, 97 .pr_domain = &inetdomain, 98 .pr_protocol = IPPROTO_UDP, 99 .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSAFE| 100 PR_ASYNC_SEND|PR_ASEND_HOLDTD|PR_ACONN_HOLDTD, 101 102 .pr_initport = udp_initport, 103 .pr_input = udp_input, 104 .pr_output = NULL, 105 .pr_ctlinput = udp_ctlinput, 106 .pr_ctloutput = udp_ctloutput, 107 108 .pr_ctlport = udp_ctlport, 109 .pr_init = udp_init, 110 .pr_usrreqs = &udp_usrreqs 111 }, 112 { 113 .pr_type = SOCK_STREAM, 114 .pr_domain = &inetdomain, 115 .pr_protocol = IPPROTO_TCP, 116 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_MPSAFE| 117 PR_ASYNC_SEND|PR_ASYNC_RCVD|PR_ACONN_HOLDTD, 118 119 .pr_initport = tcp_initport, 120 .pr_input = tcp_input, 121 .pr_output = NULL, 122 .pr_ctlinput = tcp_ctlinput, 123 .pr_ctloutmsg = tcp_ctloutmsg, 124 .pr_ctloutput = tcp_ctloutput, 125 126 .pr_ctlport = tcp_ctlport, 127 .pr_init = tcp_init, 128 .pr_drain = tcp_drain, 129 .pr_usrreqs = &tcp_usrreqs 130 }, 131 { 132 .pr_type = SOCK_RAW, 133 .pr_domain = &inetdomain, 134 .pr_protocol = IPPROTO_RAW, 135 .pr_flags = PR_ATOMIC|PR_ADDR, 136 137 .pr_input = rip_input, 138 .pr_output = NULL, 139 .pr_ctlinput = rip_ctlinput, 140 .pr_ctloutput = rip_ctloutput, 141 142 .pr_ctlport = cpu0_ctlport, 143 .pr_usrreqs = &rip_usrreqs 144 }, 145 { 146 .pr_type = SOCK_RAW, 147 .pr_domain = &inetdomain, 148 .pr_protocol = IPPROTO_ICMP, 149 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR|PR_MPSAFE, 150 151 .pr_input = icmp_input, 152 .pr_output = NULL, 153 .pr_ctlinput = NULL, 154 .pr_ctloutput = rip_ctloutput, 155 156 .pr_usrreqs = &rip_usrreqs 157 }, 158 { 159 .pr_type = SOCK_RAW, 160 .pr_domain = &inetdomain, 161 .pr_protocol = IPPROTO_IGMP, 162 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR|PR_MPSAFE, 163 164 .pr_input = igmp_input, 165 .pr_output = NULL, 166 .pr_ctlinput = NULL, 167 .pr_ctloutput = rip_ctloutput, 168 169 .pr_init = igmp_init, 170 .pr_drain = NULL, 171 .pr_usrreqs = &rip_usrreqs 172 }, 173 { 174 .pr_type = SOCK_RAW, 175 .pr_domain = &inetdomain, 176 .pr_protocol = IPPROTO_RSVP, 177 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 178 179 .pr_input = rsvp_input, 180 .pr_output = NULL, 181 .pr_ctlinput = NULL, 182 .pr_ctloutput = rip_ctloutput, 183 184 .pr_usrreqs = &rip_usrreqs 185 }, 186 { 187 .pr_type = SOCK_RAW, 188 .pr_domain = &inetdomain, 189 .pr_protocol = IPPROTO_IPV4, 190 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 191 .pr_input = encap4_input, 192 .pr_output = NULL, 193 .pr_ctlinput = NULL, 194 .pr_ctloutput = rip_ctloutput, 195 196 .pr_ctlport = NULL, 197 .pr_init = encap_init, 198 .pr_usrreqs = &rip_usrreqs 199 }, 200 { 201 .pr_type = SOCK_RAW, 202 .pr_domain = &inetdomain, 203 .pr_protocol = IPPROTO_MOBILE, 204 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 205 206 .pr_input = encap4_input, 207 .pr_output = NULL, 208 .pr_ctlinput = NULL, 209 .pr_ctloutput = rip_ctloutput, 210 211 .pr_ctlport = NULL, 212 .pr_init = encap_init, 213 .pr_usrreqs = &rip_usrreqs 214 }, 215 { 216 .pr_type = SOCK_RAW, 217 .pr_domain = &inetdomain, 218 .pr_protocol = IPPROTO_GRE, 219 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 220 221 .pr_input = encap4_input, 222 .pr_output = NULL, 223 .pr_ctlinput = NULL, 224 .pr_ctloutput = rip_ctloutput, 225 226 .pr_ctlport = NULL, 227 .pr_init = encap_init, 228 .pr_usrreqs = &rip_usrreqs 229 }, 230 #ifdef INET6 231 { 232 .pr_type = SOCK_RAW, 233 .pr_domain = &inetdomain, 234 .pr_protocol = IPPROTO_IPV6, 235 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 236 237 .pr_input = encap4_input, 238 .pr_output = NULL, 239 .pr_ctlinput = NULL, 240 .pr_ctloutput = rip_ctloutput, 241 242 .pr_ctlport = NULL, 243 .pr_init = encap_init, 244 .pr_usrreqs = &rip_usrreqs 245 }, 246 #endif 247 #ifdef IPDIVERT 248 { 249 .pr_type = SOCK_RAW, 250 .pr_domain = &inetdomain, 251 .pr_protocol = IPPROTO_DIVERT, 252 .pr_flags = PR_ATOMIC|PR_ADDR, 253 254 .pr_input = div_input, 255 .pr_output = NULL, 256 .pr_ctlinput = NULL, 257 .pr_ctloutput = ip_ctloutput, 258 259 .pr_ctlport = NULL, 260 .pr_init = div_init, 261 .pr_usrreqs = &div_usrreqs 262 }, 263 #endif 264 #ifdef PIM 265 { 266 .pr_type = SOCK_RAW, 267 .pr_domain = &inetdomain, 268 .pr_protocol = IPPROTO_PIM, 269 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 270 271 .pr_input = pim_input, 272 .pr_output = NULL, 273 .pr_ctlinput = NULL, 274 .pr_ctloutput = rip_ctloutput, 275 276 .pr_ctlport = NULL, 277 .pr_usrreqs = &rip_usrreqs 278 }, 279 #endif 280 #ifdef NPFSYNC 281 { 282 .pr_type = SOCK_RAW, 283 .pr_domain = &inetdomain, 284 .pr_protocol = IPPROTO_PFSYNC, 285 .pr_flags = PR_ATOMIC|PR_ADDR, 286 287 .pr_input = pfsync_input, 288 .pr_output = NULL, 289 .pr_ctlinput = NULL, 290 .pr_ctloutput = rip_ctloutput, 291 292 .pr_ctlport = NULL, 293 .pr_usrreqs = &rip_usrreqs 294 }, 295 #endif /* NPFSYNC */ 296 { 297 /* raw wildcard */ 298 .pr_type = SOCK_RAW, 299 .pr_domain = &inetdomain, 300 .pr_protocol = 0, 301 .pr_flags = PR_ATOMIC|PR_ADDR, 302 303 .pr_input = rip_input, 304 .pr_output = NULL, 305 .pr_ctlinput = NULL, 306 .pr_ctloutput = rip_ctloutput, 307 308 .pr_init = rip_init, 309 .pr_ctlport = NULL, 310 .pr_usrreqs = &rip_usrreqs 311 }, 312 #ifdef CARP 313 { 314 .pr_type = SOCK_RAW, 315 .pr_domain = &inetdomain, 316 .pr_protocol = IPPROTO_CARP, 317 .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSAFE, 318 319 .pr_input = carp_proto_input, 320 .pr_output = rip_output, 321 .pr_ctlinput = carp_proto_ctlinput, 322 .pr_ctloutput = rip_ctloutput, 323 324 .pr_ctlport = cpu0_ctlport, 325 .pr_usrreqs = &rip_usrreqs 326 }, 327 #endif 328 }; 329 330 static void 331 inetdomain_init(void) 332 { 333 in_pcbglobalinit(); 334 } 335 336 struct domain inetdomain = { 337 .dom_family = AF_INET, 338 .dom_name = "internet", 339 .dom_init = inetdomain_init, 340 .dom_externalize = NULL, 341 .dom_dispose = NULL, 342 .dom_protosw = inetsw, 343 .dom_protoswNPROTOSW = &inetsw[NELEM(inetsw)], 344 .dom_next = SLIST_ENTRY_INITIALIZER, 345 .dom_rtattach = in_inithead, 346 .dom_rtoffset = 32, 347 .dom_maxrtkey = sizeof(struct sockaddr_in), 348 .dom_ifattach = NULL, 349 .dom_ifdetach = NULL 350 }; 351 352 DOMAIN_SET(inet); 353 354 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 355 "Internet Family"); 356 357 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 358 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 359 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 360 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 361 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 362 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 363 #ifdef IPDIVERT 364 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 365 #endif 366 #ifdef PIM 367 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 368 #endif 369 #ifdef CARP 370 SYSCTL_NODE(_net_inet, IPPROTO_CARP, carp, CTLFLAG_RW, 0, "CARP"); 371 #endif 372