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 * 4. 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 * $FreeBSD$ 31 */ 32 33 #include "opt_ipdivert.h" 34 #include "opt_ipx.h" 35 #include "opt_mrouting.h" 36 #include "opt_ipsec.h" 37 #include "opt_inet6.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/socket.h> 43 #include <sys/domain.h> 44 #include <sys/protosw.h> 45 #include <sys/queue.h> 46 #include <sys/sysctl.h> 47 48 #include <net/if.h> 49 #include <net/route.h> 50 51 #include <netinet/in.h> 52 #include <netinet/in_systm.h> 53 #include <netinet/ip.h> 54 #include <netinet/ip_var.h> 55 #include <netinet/ip_icmp.h> 56 #include <netinet/ip_divert.h> 57 #include <netinet/igmp_var.h> 58 #ifdef PIM 59 #include <netinet/pim_var.h> 60 #endif 61 #include <netinet/tcp.h> 62 #include <netinet/tcp_timer.h> 63 #include <netinet/tcp_var.h> 64 #include <netinet/udp.h> 65 #include <netinet/udp_var.h> 66 #include <netinet/ip_encap.h> 67 68 /* 69 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 70 */ 71 72 #ifdef IPSEC 73 #include <netinet6/ipsec.h> 74 #include <netinet6/ah.h> 75 #ifdef IPSEC_ESP 76 #include <netinet6/esp.h> 77 #endif 78 #include <netinet6/ipcomp.h> 79 #endif /* IPSEC */ 80 81 #ifdef FAST_IPSEC 82 #include <netipsec/ipsec.h> 83 #endif /* FAST_IPSEC */ 84 85 #ifdef IPXIP 86 #include <netipx/ipx_ip.h> 87 #endif 88 89 extern struct domain inetdomain; 90 static struct pr_usrreqs nousrreqs; 91 92 struct protosw inetsw[] = { 93 { 0, &inetdomain, 0, 0, 94 0, 0, 0, 0, 95 0, 96 ip_init, 0, ip_slowtimo, ip_drain, 97 &nousrreqs 98 }, 99 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 100 udp_input, 0, udp_ctlinput, ip_ctloutput, 101 0, 102 udp_init, 0, 0, 0, 103 &udp_usrreqs 104 }, 105 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 106 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 107 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 108 0, 109 tcp_init, 0, tcp_slowtimo, tcp_drain, 110 &tcp_usrreqs 111 }, 112 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 113 rip_input, 0, rip_ctlinput, rip_ctloutput, 114 0, 115 0, 0, 0, 0, 116 &rip_usrreqs 117 }, 118 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 119 icmp_input, 0, 0, rip_ctloutput, 120 0, 121 0, 0, 0, 0, 122 &rip_usrreqs 123 }, 124 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 125 igmp_input, 0, 0, rip_ctloutput, 126 0, 127 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 128 &rip_usrreqs 129 }, 130 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 131 rsvp_input, 0, 0, rip_ctloutput, 132 0, 133 0, 0, 0, 0, 134 &rip_usrreqs 135 }, 136 #ifdef IPSEC 137 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 138 ah4_input, 0, 0, 0, 139 0, 140 0, 0, 0, 0, 141 &nousrreqs 142 }, 143 #ifdef IPSEC_ESP 144 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 145 esp4_input, 0, 0, 0, 146 0, 147 0, 0, 0, 0, 148 &nousrreqs 149 }, 150 #endif 151 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 152 ipcomp4_input, 0, 0, 0, 153 0, 154 0, 0, 0, 0, 155 &nousrreqs 156 }, 157 #endif /* IPSEC */ 158 #ifdef FAST_IPSEC 159 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 160 ah4_input, 0, ah4_ctlinput, 0, 161 0, 162 0, 0, 0, 0, 163 &nousrreqs 164 }, 165 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 166 esp4_input, 0, esp4_ctlinput, 0, 167 0, 168 0, 0, 0, 0, 169 &nousrreqs 170 }, 171 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 172 ipcomp4_input, 0, 0, 0, 173 0, 174 0, 0, 0, 0, 175 &nousrreqs 176 }, 177 #endif /* FAST_IPSEC */ 178 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 179 encap4_input, 0, 0, rip_ctloutput, 180 0, 181 encap_init, 0, 0, 0, 182 &rip_usrreqs 183 }, 184 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 185 encap4_input, 0, 0, rip_ctloutput, 186 0, 187 encap_init, 0, 0, 0, 188 &rip_usrreqs 189 }, 190 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 191 encap4_input, 0, 0, rip_ctloutput, 192 0, 193 encap_init, 0, 0, 0, 194 &rip_usrreqs 195 }, 196 # ifdef INET6 197 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 198 encap4_input, 0, 0, rip_ctloutput, 199 0, 200 encap_init, 0, 0, 0, 201 &rip_usrreqs 202 }, 203 #endif 204 #ifdef IPDIVERT 205 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 206 div_input, 0, div_ctlinput, ip_ctloutput, 207 0, 208 div_init, 0, 0, 0, 209 &div_usrreqs, 210 }, 211 #endif 212 #ifdef IPXIP 213 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 214 ipxip_input, 0, ipxip_ctlinput, 0, 215 0, 216 0, 0, 0, 0, 217 &rip_usrreqs 218 }, 219 #endif 220 #ifdef PIM 221 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 222 pim_input, 0, 0, rip_ctloutput, 223 0, 224 0, 0, 0, 0, 225 &rip_usrreqs 226 }, 227 #endif /* PIM */ 228 /* raw wildcard */ 229 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 230 rip_input, 0, 0, rip_ctloutput, 231 0, 232 rip_init, 0, 0, 0, 233 &rip_usrreqs 234 }, 235 }; 236 237 extern int in_inithead(void **, int); 238 239 struct domain inetdomain = 240 { AF_INET, "internet", 0, 0, 0, 241 inetsw, 242 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 243 in_inithead, 32, sizeof(struct sockaddr_in) 244 }; 245 246 DOMAIN_SET(inet); 247 248 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 249 "Internet Family"); 250 251 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 252 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 253 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 254 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 255 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 256 #ifdef FAST_IPSEC 257 /* XXX no protocol # to use, pick something "reserved" */ 258 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC"); 259 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH"); 260 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP"); 261 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP"); 262 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP"); 263 #else 264 #ifdef IPSEC 265 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 266 #endif /* IPSEC */ 267 #endif /* !FAST_IPSEC */ 268 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 269 #ifdef IPDIVERT 270 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 271 #endif 272 #ifdef PIM 273 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM"); 274 #endif 275