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 #endif /* IPSEC */ 79 80 #include "gif.h" 81 #if NGIF > 0 82 #include <netinet/in_gif.h> 83 #endif 84 85 #include "stf.h" 86 #if NSTF > 0 87 #include <net/if_stf.h> 88 #endif 89 90 #ifdef IPXIP 91 #include <netipx/ipx_ip.h> 92 #endif 93 94 #ifdef NSIP 95 #include <netns/ns.h> 96 #include <netns/ns_if.h> 97 #endif 98 99 extern struct domain inetdomain; 100 static struct pr_usrreqs nousrreqs; 101 102 struct ipprotosw inetsw[] = { 103 { 0, &inetdomain, 0, 0, 104 0, 0, 0, 0, 105 0, 106 ip_init, 0, ip_slowtimo, ip_drain, 107 &nousrreqs 108 }, 109 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 110 udp_input, 0, udp_ctlinput, ip_ctloutput, 111 0, 112 udp_init, 0, 0, 0, 113 &udp_usrreqs 114 }, 115 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, 116 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD, 117 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 118 0, 119 tcp_init, 0, tcp_slowtimo, tcp_drain, 120 &tcp_usrreqs 121 }, 122 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 123 rip_input, 0, rip_ctlinput, rip_ctloutput, 124 0, 125 0, 0, 0, 0, 126 &rip_usrreqs 127 }, 128 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 129 icmp_input, 0, 0, rip_ctloutput, 130 0, 131 0, 0, 0, 0, 132 &rip_usrreqs 133 }, 134 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 135 igmp_input, 0, 0, rip_ctloutput, 136 0, 137 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 138 &rip_usrreqs 139 }, 140 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR, 141 rsvp_input, 0, 0, rip_ctloutput, 142 0, 143 0, 0, 0, 0, 144 &rip_usrreqs 145 }, 146 #ifdef IPSEC 147 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 148 ah4_input, 0, 0, 0, 149 0, 150 0, 0, 0, 0, 151 &nousrreqs 152 }, 153 #ifdef IPSEC_ESP 154 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 155 esp4_input, 0, 0, 0, 156 0, 157 0, 0, 0, 0, 158 &nousrreqs 159 }, 160 #endif 161 #endif /* IPSEC */ 162 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, 163 encap4_input, 0, 0, rip_ctloutput, 164 0, 165 encap_init, 0, 0, 0, 166 &nousrreqs 167 }, 168 # ifdef INET6 169 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 170 encap4_input, 0, 0, rip_ctloutput, 171 0, 172 0, 0, 0, 0, 173 &nousrreqs 174 }, 175 #endif 176 #ifdef IPDIVERT 177 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR, 178 div_input, 0, 0, ip_ctloutput, 179 0, 180 div_init, 0, 0, 0, 181 &div_usrreqs, 182 }, 183 #endif 184 #ifdef IPXIP 185 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 186 ipxip_input, 0, ipxip_ctlinput, 0, 187 0, 188 0, 0, 0, 0, 189 &rip_usrreqs 190 }, 191 #endif 192 #ifdef NSIP 193 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 194 idpip_input, 0, nsip_ctlinput, 0, 195 0, 196 0, 0, 0, 0, 197 &rip_usrreqs 198 }, 199 #endif 200 /* raw wildcard */ 201 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 202 rip_input, 0, 0, rip_ctloutput, 203 0, 204 rip_init, 0, 0, 0, 205 &rip_usrreqs 206 }, 207 }; 208 209 #if NGIF > 0 210 struct ipprotosw in_gif_protosw = 211 { SOCK_RAW, &inetdomain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR, 212 in_gif_input, rip_output, 0, rip_ctloutput, 213 0, 214 0, 0, 0, 0, 215 &rip_usrreqs 216 }; 217 #endif /*NGIF*/ 218 219 #if NSTF > 0 220 struct ipprotosw in_stf_protosw = 221 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 222 in_stf_input, rip_output, 0, rip_ctloutput, 223 0, 224 0, 0, 0, 0, 225 &rip_usrreqs 226 }; 227 #endif /*NSTF*/ 228 229 extern int in_inithead __P((void **, int)); 230 231 struct domain inetdomain = 232 { AF_INET, "internet", 0, 0, 0, 233 (struct protosw *)inetsw, 234 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 235 in_inithead, 32, sizeof(struct sockaddr_in) 236 }; 237 238 DOMAIN_SET(inet); 239 240 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0, 241 "Internet Family"); 242 243 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP"); 244 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP"); 245 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP"); 246 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP"); 247 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP"); 248 #ifdef IPSEC 249 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC"); 250 #endif /* IPSEC */ 251 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW"); 252 #ifdef IPDIVERT 253 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT"); 254 #endif 255 256