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/kernel.h> 44 #include <sys/socket.h> 45 #include <sys/domain.h> 46 #include <sys/protosw.h> 47 #include <sys/queue.h> 48 #include <sys/sysctl.h> 49 50 #include <net/if.h> 51 #include <net/route.h> 52 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/ip.h> 56 #include <netinet/ip_var.h> 57 #include <netinet/ip_icmp.h> 58 #include <netinet/igmp_var.h> 59 #include <netinet/tcp.h> 60 #include <netinet/tcp_timer.h> 61 #include <netinet/tcp_var.h> 62 #include <netinet/udp.h> 63 #include <netinet/udp_var.h> 64 #include <netinet/ip_encap.h> 65 66 #include <netinet/ipprotosw.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 #include "gif.h" 82 #if NGIF > 0 83 #include <netinet/in_gif.h> 84 #endif 85 86 #include "stf.h" 87 #if NSTF > 0 88 #include <net/if_stf.h> 89 #endif 90 91 #ifdef IPXIP 92 #include <netipx/ipx_ip.h> 93 #endif 94 95 #ifdef NSIP 96 #include <netns/ns.h> 97 #include <netns/ns_if.h> 98 #endif 99 100 extern struct domain inetdomain; 101 static struct pr_usrreqs nousrreqs; 102 103 struct ipprotosw inetsw[] = { 104 { 0, &inetdomain, 0, 0, 105 0, 0, 0, 0, 106 0, 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 0, 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 0, 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 0, 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 0, 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 0, 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 0, 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 0, 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 0, 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 0, 165 0, 0, 0, 0, 166 &nousrreqs 167 }, 168 #endif /* IPSEC */ 169 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 170 encap4_input, 0, 0, rip_ctloutput, 171 0, 172 encap_init, 0, 0, 0, 173 &rip_usrreqs 174 }, 175 # ifdef INET6 176 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 177 encap4_input, 0, 0, rip_ctloutput, 178 0, 179 encap_init, 0, 0, 0, 180 &rip_usrreqs 181 }, 182 #endif 183 #ifdef IPDIVERT 184 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 185 div_input, 0, 0, ip_ctloutput, 186 0, 187 div_init, 0, 0, 0, 188 &div_usrreqs, 189 }, 190 #endif 191 #ifdef IPXIP 192 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 193 ipxip_input, 0, ipxip_ctlinput, 0, 194 0, 195 0, 0, 0, 0, 196 &rip_usrreqs 197 }, 198 #endif 199 #ifdef NSIP 200 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR, 201 idpip_input, 0, nsip_ctlinput, 0, 202 0, 203 0, 0, 0, 0, 204 &rip_usrreqs 205 }, 206 #endif 207 /* raw wildcard */ 208 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 209 rip_input, 0, 0, rip_ctloutput, 210 0, 211 rip_init, 0, 0, 0, 212 &rip_usrreqs 213 }, 214 }; 215 216 #if NGIF > 0 217 struct ipprotosw in_gif_protosw = 218 { SOCK_RAW, &inetdomain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR, 219 in_gif_input, rip_output, 0, rip_ctloutput, 220 0, 221 0, 0, 0, 0, 222 &rip_usrreqs 223 }; 224 #endif /*NGIF*/ 225 226 #if NSTF > 0 227 struct ipprotosw in_stf_protosw = 228 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 229 in_stf_input, rip_output, 0, rip_ctloutput, 230 0, 231 0, 0, 0, 0, 232 &rip_usrreqs 233 }; 234 #endif /*NSTF*/ 235 236 extern int in_inithead __P((void **, int)); 237 238 struct domain inetdomain = 239 { AF_INET, "internet", 0, 0, 0, 240 (struct protosw *)inetsw, 241 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 242 in_inithead, 32, sizeof(struct sockaddr_in) 243 }; 244 245 DOMAIN_SET(inet); 246 247 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 248 "Internet Family"); 249 250 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 251 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 252 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 253 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 254 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 255 #ifdef IPSEC 256 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 257 #endif /* IPSEC */ 258 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 259 #ifdef IPDIVERT 260 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT"); 261 #endif 262 263