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