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