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 1.6 2004/03/06 01:58:55 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 #include <net/netisr.h> /* for cpu0_soport */ 100 101 extern struct domain inetdomain; 102 static struct pr_usrreqs nousrreqs; 103 104 struct ipprotosw inetsw[] = { 105 { 0, &inetdomain, 0, 0, 106 0, 0, 0, 0, 107 cpu0_soport, 108 ip_init, 0, ip_slowtimo, ip_drain, 109 &nousrreqs 110 }, 111 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 112 udp_input, 0, udp_ctlinput, ip_ctloutput, 113 udp_soport, 114 udp_init, 0, 0, 0, 115 &udp_usrreqs 116 }, 117 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 118 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 119 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 120 tcp_soport, 121 tcp_init, 0, tcp_slowtimo, tcp_drain, 122 &tcp_usrreqs 123 }, 124 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 125 rip_input, 0, rip_ctlinput, rip_ctloutput, 126 cpu0_soport, 127 0, 0, 0, 0, 128 &rip_usrreqs 129 }, 130 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 131 icmp_input, 0, 0, rip_ctloutput, 132 cpu0_soport, 133 0, 0, 0, 0, 134 &rip_usrreqs 135 }, 136 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 137 igmp_input, 0, 0, rip_ctloutput, 138 cpu0_soport, 139 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 140 &rip_usrreqs 141 }, 142 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 143 rsvp_input, 0, 0, rip_ctloutput, 144 cpu0_soport, 145 0, 0, 0, 0, 146 &rip_usrreqs 147 }, 148 #ifdef IPSEC 149 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 150 ah4_input, 0, 0, 0, 151 cpu0_soport, 152 0, 0, 0, 0, 153 &nousrreqs 154 }, 155 #ifdef IPSEC_ESP 156 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 157 esp4_input, 0, 0, 0, 158 cpu0_soport, 159 0, 0, 0, 0, 160 &nousrreqs 161 }, 162 #endif 163 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 164 ipcomp4_input, 0, 0, 0, 165 cpu0_soport, 166 0, 0, 0, 0, 167 &nousrreqs 168 }, 169 #endif /* IPSEC */ 170 #ifdef FAST_IPSEC 171 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 172 ipsec4_common_input, 0, 0, 0, 173 cpu0_soport, 174 0, 0, 0, 0, 175 &nousrreqs 176 }, 177 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 178 ipsec4_common_input, 0, 0, 0, 179 cpu0_soport, 180 0, 0, 0, 0, 181 &nousrreqs 182 }, 183 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 184 ipsec4_common_input, 0, 0, 0, 185 cpu0_soport, 186 0, 0, 0, 0, 187 &nousrreqs 188 }, 189 #endif /* FAST_IPSEC */ 190 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 191 encap4_input, 0, 0, rip_ctloutput, 192 cpu0_soport, 193 encap_init, 0, 0, 0, 194 &rip_usrreqs 195 }, 196 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 197 encap4_input, 0, 0, rip_ctloutput, 198 cpu0_soport, 199 encap_init, 0, 0, 0, 200 &rip_usrreqs 201 }, 202 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 203 encap4_input, 0, 0, rip_ctloutput, 204 cpu0_soport, 205 encap_init, 0, 0, 0, 206 &rip_usrreqs 207 }, 208 # ifdef INET6 209 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 210 encap4_input, 0, 0, rip_ctloutput, 211 cpu0_soport, 212 encap_init, 0, 0, 0, 213 &rip_usrreqs 214 }, 215 #endif 216 #ifdef IPDIVERT 217 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 218 div_input, 0, 0, ip_ctloutput, 219 cpu0_soport, 220 div_init, 0, 0, 0, 221 &div_usrreqs, 222 }, 223 #endif 224 #ifdef IPXIP 225 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 226 ipxip_input, 0, ipxip_ctlinput, 0, 227 cpu0_soport, 228 0, 0, 0, 0, 229 &rip_usrreqs 230 }, 231 #endif 232 #ifdef NSIP 233 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 234 idpip_input, 0, nsip_ctlinput, 0, 235 cpu0_soport, 236 0, 0, 0, 0, 237 &rip_usrreqs 238 }, 239 #endif 240 #ifdef PIM 241 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 242 pim_input, 0, 0, rip_ctloutput, 243 cpu0_soport, 244 0, 0, 0, 0, 245 &rip_usrreqs 246 }, 247 #endif 248 /* raw wildcard */ 249 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 250 rip_input, 0, 0, rip_ctloutput, 251 cpu0_soport, 252 rip_init, 0, 0, 0, 253 &rip_usrreqs 254 }, 255 }; 256 257 extern int in_inithead (void **, int); 258 259 struct domain inetdomain = 260 { AF_INET, "internet", 0, 0, 0, 261 (struct protosw *)inetsw, 262 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 263 in_inithead, 32, sizeof(struct sockaddr_in) 264 }; 265 266 DOMAIN_SET(inet); 267 268 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 269 "Internet Family"); 270 271 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 272 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 273 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 274 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 275 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 276 #ifdef FAST_IPSEC 277 /* XXX no protocol # to use, pick something "reserved" */ 278 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 279 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 280 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 281 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 282 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 283 #else 284 #ifdef IPSEC 285 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 286 #endif /* IPSEC */ 287 #endif /* !FAST_IPSEC */ 288 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 289 #ifdef IPDIVERT 290 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 291 #endif 292 #ifdef PIM 293 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 294 #endif 295