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 1.11 2005/01/31 21:44:10 joerg 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 72 /* 73 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 74 */ 75 76 #ifdef IPSEC 77 #include <netinet6/ipsec.h> 78 #include <netinet6/ah.h> 79 #ifdef IPSEC_ESP 80 #include <netinet6/esp.h> 81 #endif 82 #include <netinet6/ipcomp.h> 83 #endif /* IPSEC */ 84 85 #ifdef FAST_IPSEC 86 #include <netproto/ipsec/ipsec.h> 87 #endif /* FAST_IPSEC */ 88 89 #ifdef IPXIP 90 #include <netproto/ipx/ipx_ip.h> 91 #endif 92 93 #ifdef NSIP 94 #include <netns/ns.h> 95 #include <netns/ns_if.h> 96 #endif 97 98 #include <net/netisr.h> /* for cpu0_soport */ 99 100 extern struct domain inetdomain; 101 static struct pr_usrreqs nousrreqs; 102 103 struct protosw inetsw[] = { 104 { 0, &inetdomain, 0, 0, 105 0, 0, 0, 0, 106 cpu0_soport, 107 ip_init, 0, ip_slowtimo, ip_drain, 108 &nousrreqs 109 }, 110 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 111 udp_input, 0, udp_ctlinput, ip_ctloutput, 112 udp_soport, 113 udp_init, 0, 0, 0, 114 &udp_usrreqs 115 }, 116 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 117 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 118 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 119 tcp_soport, 120 tcp_init, 0, tcp_slowtimo, tcp_drain, 121 &tcp_usrreqs 122 }, 123 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 124 rip_input, 0, rip_ctlinput, rip_ctloutput, 125 cpu0_soport, 126 0, 0, 0, 0, 127 &rip_usrreqs 128 }, 129 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 130 icmp_input, 0, 0, rip_ctloutput, 131 cpu0_soport, 132 0, 0, 0, 0, 133 &rip_usrreqs 134 }, 135 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 136 igmp_input, 0, 0, rip_ctloutput, 137 cpu0_soport, 138 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 139 &rip_usrreqs 140 }, 141 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 142 rsvp_input, 0, 0, rip_ctloutput, 143 cpu0_soport, 144 0, 0, 0, 0, 145 &rip_usrreqs 146 }, 147 #ifdef IPSEC 148 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 149 ah4_input, 0, 0, 0, 150 cpu0_soport, 151 0, 0, 0, 0, 152 &nousrreqs 153 }, 154 #ifdef IPSEC_ESP 155 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 156 esp4_input, 0, 0, 0, 157 cpu0_soport, 158 0, 0, 0, 0, 159 &nousrreqs 160 }, 161 #endif 162 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 163 ipcomp4_input, 0, 0, 0, 164 cpu0_soport, 165 0, 0, 0, 0, 166 &nousrreqs 167 }, 168 #endif /* IPSEC */ 169 #ifdef FAST_IPSEC 170 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 171 ipsec4_common_input, 0, 0, 0, 172 cpu0_soport, 173 0, 0, 0, 0, 174 &nousrreqs 175 }, 176 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 177 ipsec4_common_input, 0, 0, 0, 178 cpu0_soport, 179 0, 0, 0, 0, 180 &nousrreqs 181 }, 182 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 183 ipsec4_common_input, 0, 0, 0, 184 cpu0_soport, 185 0, 0, 0, 0, 186 &nousrreqs 187 }, 188 #endif /* FAST_IPSEC */ 189 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 190 encap4_input, 0, 0, rip_ctloutput, 191 cpu0_soport, 192 encap_init, 0, 0, 0, 193 &rip_usrreqs 194 }, 195 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 196 encap4_input, 0, 0, rip_ctloutput, 197 cpu0_soport, 198 encap_init, 0, 0, 0, 199 &rip_usrreqs 200 }, 201 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 202 encap4_input, 0, 0, rip_ctloutput, 203 cpu0_soport, 204 encap_init, 0, 0, 0, 205 &rip_usrreqs 206 }, 207 # ifdef INET6 208 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 209 encap4_input, 0, 0, rip_ctloutput, 210 cpu0_soport, 211 encap_init, 0, 0, 0, 212 &rip_usrreqs 213 }, 214 #endif 215 #ifdef IPDIVERT 216 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 217 div_input, 0, 0, ip_ctloutput, 218 cpu0_soport, 219 div_init, 0, 0, 0, 220 &div_usrreqs, 221 }, 222 #endif 223 #ifdef IPXIP 224 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 225 ipxip_input, 0, ipxip_ctlinput, 0, 226 cpu0_soport, 227 0, 0, 0, 0, 228 &rip_usrreqs 229 }, 230 #endif 231 #ifdef NSIP 232 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 233 idpip_input, 0, nsip_ctlinput, 0, 234 cpu0_soport, 235 0, 0, 0, 0, 236 &rip_usrreqs 237 }, 238 #endif 239 #ifdef PIM 240 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 241 pim_input, 0, 0, rip_ctloutput, 242 cpu0_soport, 243 0, 0, 0, 0, 244 &rip_usrreqs 245 }, 246 #endif 247 #ifdef NPFSYNC 248 { SOCK_RAW, &inetdomain, IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR, 249 pfsync_input, 0, 0, rip_ctloutput, 250 0, 251 0, 0, 0, 0, 252 &rip_usrreqs 253 }, 254 #endif /* NPFSYNC */ 255 /* raw wildcard */ 256 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 257 rip_input, 0, 0, rip_ctloutput, 258 cpu0_soport, 259 rip_init, 0, 0, 0, 260 &rip_usrreqs 261 }, 262 }; 263 264 struct domain inetdomain = 265 { AF_INET, "internet", 0, 0, 0, 266 (struct protosw *)inetsw, 267 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 268 in_inithead, 32, sizeof(struct sockaddr_in) 269 }; 270 271 DOMAIN_SET(inet); 272 273 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 274 "Internet Family"); 275 276 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 277 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 278 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 279 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 280 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 281 #ifdef FAST_IPSEC 282 /* XXX no protocol # to use, pick something "reserved" */ 283 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 284 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 285 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 286 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 287 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 288 #else 289 #ifdef IPSEC 290 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 291 #endif /* IPSEC */ 292 #endif /* !FAST_IPSEC */ 293 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 294 #ifdef IPDIVERT 295 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 296 #endif 297 #ifdef PIM 298 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 299 #endif 300