in_proto.c revision 1.29.2.1.4.1
1 /* $NetBSD: in_proto.c,v 1.29.2.1.4.1 1999/06/28 06:36:59 itojun Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1982, 1986, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 65 */ 66 67 #include "opt_mrouting.h" 68 #include "opt_eon.h" /* ISO CLNL over IP */ 69 #include "opt_iso.h" /* ISO TP tunneled over IP */ 70 #include "opt_ns.h" /* NSIP: XNS tunneled over IP */ 71 #include "opt_inet.h" 72 73 #include <sys/param.h> 74 #include <sys/socket.h> 75 #include <sys/protosw.h> 76 #include <sys/domain.h> 77 #include <sys/mbuf.h> 78 79 #include <net/if.h> 80 #ifdef RADISH 81 #include <net/radish.h> 82 #else /* RADISH */ 83 #include <net/radix.h> 84 #endif /* RADISH */ 85 #include <net/route.h> 86 87 #include <netinet/in.h> 88 #include <netinet/in_systm.h> 89 #include <netinet/ip.h> 90 #include <netinet/ip_var.h> 91 #include <netinet/ip_icmp.h> 92 #include <netinet/in_pcb.h> 93 94 #ifdef INET6 95 #ifndef INET 96 #include <netinet/in.h> 97 #endif 98 #include <netinet/ip6.h> 99 #endif 100 101 #include <netinet/igmp_var.h> 102 #include <netinet/tcp.h> 103 #include <netinet/tcp_fsm.h> 104 #include <netinet/tcp_seq.h> 105 #include <netinet/tcp_timer.h> 106 #include <netinet/tcp_var.h> 107 #include <netinet/tcpip.h> 108 #include <netinet/tcp_debug.h> 109 #include <netinet/udp.h> 110 #include <netinet/udp_var.h> 111 /* 112 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 113 */ 114 115 #ifdef IPSEC 116 #include <netinet6/ah.h> 117 #ifdef IPSEC_ESP 118 #include <netinet6/esp.h> 119 #endif 120 #include <netinet6/ipcomp.h> 121 #endif /* IPSEC */ 122 123 #include "gif.h" 124 #if NGIF > 0 125 #include <netinet/in_gif.h> 126 #endif 127 128 #ifdef NSIP 129 #include <netns/ns_var.h> 130 #include <netns/idp_var.h> 131 #endif /* NSIP */ 132 133 #ifdef TPIP 134 #include <netiso/tp_param.h> 135 #include <netiso/tp_var.h> 136 #endif /* TPIP */ 137 138 #ifdef EON 139 #include <netiso/eonvar.h> 140 #endif /* EON */ 141 142 #include "ipip.h" 143 #if NIPIP > 0 || defined(MROUTING) 144 #include <netinet/ip_ipip.h> 145 #endif /* NIPIP > 0 || MROUTING */ 146 147 #include "gre.h" 148 #if NGRE > 0 149 #include <netinet/ip_gre.h> 150 #endif 151 152 extern struct domain inetdomain; 153 154 struct protosw inetsw[] = { 155 { 0, &inetdomain, 0, 0, 156 0, ip_output, 0, 0, 157 0, 158 ip_init, 0, ip_slowtimo, ip_drain, ip_sysctl 159 }, 160 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 161 udp_input, 0, udp_ctlinput, ip_ctloutput, 162 udp_usrreq, 163 udp_init, 0, 0, 0, udp_sysctl 164 }, 165 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD, 166 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 167 tcp_usrreq, 168 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, tcp_sysctl 169 }, 170 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 171 rip_input, rip_output, 0, rip_ctloutput, 172 rip_usrreq, 173 0, 0, 0, 0, 174 }, 175 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 176 icmp_input, rip_output, 0, rip_ctloutput, 177 rip_usrreq, 178 0, 0, 0, 0, icmp_sysctl 179 }, 180 #ifdef IPSEC 181 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 182 ah4_input, 0, 0, 0, 183 0, 184 0, 0, 0, 0, ipsec_sysctl 185 }, 186 #ifdef IPSEC_ESP 187 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 188 esp4_input, 0, 0, 0, 189 0, 190 0, 0, 0, 0, ipsec_sysctl 191 }, 192 #endif 193 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 194 ipcomp4_input, 0, 0, 0, 195 0, 196 0, 0, 0, 0, ipsec_sysctl 197 }, 198 #endif /* IPSEC */ 199 #if NGIF > 0 200 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, 201 in_gif_input, 0, 0, 0, 202 0, 203 0, 0, 0, 0, 204 }, 205 #ifdef INET6 206 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 207 in_gif_input, 0, 0, 0, 208 0, 209 0, 0, 0, 0, 210 }, 211 #endif /* INET6 */ 212 #else /* NGIF */ 213 #if NIPIP > 0 || defined(MROUTING) 214 { SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 215 ipip_input, rip_output, 0, rip_ctloutput, 216 rip_usrreq, /* XXX */ 217 0, 0, 0, 0, 218 }, 219 #endif /* NIPIP > 0 || MROUTING */ 220 #if NGRE > 0 221 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR, 222 gre_input, rip_output, 0, rip_ctloutput, 223 rip_usrreq, 224 0, 0, 0, 0, 225 }, 226 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR, 227 gre_mobile_input, rip_output, 0, rip_ctloutput, 228 rip_usrreq, 229 0, 0, 0, 0, 230 }, 231 #endif /* NGRE > 0 */ 232 #endif /* NGIF */ 233 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 234 igmp_input, rip_output, 0, rip_ctloutput, 235 rip_usrreq, 236 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 237 }, 238 #ifdef TPIP 239 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 240 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 241 tp_usrreq, 242 tp_init, 0, tp_slowtimo, tp_drain, 243 }, 244 #endif /* TPIP */ 245 /* EON (ISO CLNL over IP) */ 246 #ifdef EON 247 { SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 248 eoninput, 0, eonctlinput, 0, 249 0, 250 eonprotoinit, 0, 0, 0, 251 }, 252 #endif /* EON */ 253 #ifdef NSIP 254 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 255 idpip_input, NULL, nsip_ctlinput, 0, 256 rip_usrreq, 257 0, 0, 0, 0, 258 }, 259 #endif /* NSIP */ 260 /* raw wildcard */ 261 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 262 rip_input, rip_output, 0, rip_ctloutput, 263 rip_usrreq, 264 rip_init, 0, 0, 0, 265 }, 266 }; 267 268 struct domain inetdomain = 269 { PF_INET, "internet", 0, 0, 0, 270 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 271 rn_inithead, 32, sizeof(struct sockaddr_in) }; 272 273 #define TCP_SYN_HASH_SIZE 293 274 #define TCP_SYN_BUCKET_SIZE 35 275 276 int tcp_syn_cache_size = TCP_SYN_HASH_SIZE; 277 int tcp_syn_cache_limit = TCP_SYN_HASH_SIZE*TCP_SYN_BUCKET_SIZE; 278 int tcp_syn_bucket_limit = 3*TCP_SYN_BUCKET_SIZE; 279 struct syn_cache_head tcp_syn_cache[TCP_SYN_HASH_SIZE]; 280 int tcp_syn_cache_interval = 1; /* runs timer twice a second */ 281
Indexes created Sun Oct 19 21:10:07 GMT 2025