in_proto.c revision 1.29
1 /* $NetBSD: in_proto.c,v 1.29 1999/01/14 01:16:55 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95 36 */ 37 38 #include "opt_mrouting.h" 39 #include "opt_eon.h" /* ISO CLNL over IP */ 40 #include "opt_iso.h" /* ISO TP tunneled over IP */ 41 #include "opt_ns.h" /* NSIP: XNS tunneled over IP */ 42 43 #include <sys/param.h> 44 #include <sys/socket.h> 45 #include <sys/protosw.h> 46 #include <sys/domain.h> 47 #include <sys/mbuf.h> 48 49 #include <net/if.h> 50 #include <net/radix.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/in_pcb.h> 59 #include <netinet/igmp_var.h> 60 #include <netinet/tcp.h> 61 #include <netinet/tcp_fsm.h> 62 #include <netinet/tcp_seq.h> 63 #include <netinet/tcp_timer.h> 64 #include <netinet/tcp_var.h> 65 #include <netinet/tcpip.h> 66 #include <netinet/tcp_debug.h> 67 #include <netinet/udp.h> 68 #include <netinet/udp_var.h> 69 /* 70 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 71 */ 72 73 #ifdef NSIP 74 #include <netns/ns_var.h> 75 #include <netns/idp_var.h> 76 #endif /* NSIP */ 77 78 #ifdef TPIP 79 #include <netiso/tp_param.h> 80 #include <netiso/tp_var.h> 81 #endif /* TPIP */ 82 83 #ifdef EON 84 #include <netiso/eonvar.h> 85 #endif /* EON */ 86 87 #include "ipip.h" 88 #if NIPIP > 0 || defined(MROUTING) 89 #include <netinet/ip_ipip.h> 90 #endif /* NIPIP > 0 || MROUTING */ 91 92 #include "gre.h" 93 #if NGRE > 0 94 #include <netinet/ip_gre.h> 95 #endif 96 97 extern struct domain inetdomain; 98 99 struct protosw inetsw[] = { 100 { 0, &inetdomain, 0, 0, 101 0, ip_output, 0, 0, 102 0, 103 ip_init, 0, ip_slowtimo, ip_drain, ip_sysctl 104 }, 105 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 106 udp_input, 0, udp_ctlinput, ip_ctloutput, 107 udp_usrreq, 108 udp_init, 0, 0, 0, udp_sysctl 109 }, 110 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD, 111 tcp_input, 0, tcp_ctlinput, tcp_ctloutput, 112 tcp_usrreq, 113 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, tcp_sysctl 114 }, 115 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 116 rip_input, rip_output, 0, rip_ctloutput, 117 rip_usrreq, 118 0, 0, 0, 0, 119 }, 120 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR, 121 icmp_input, rip_output, 0, rip_ctloutput, 122 rip_usrreq, 123 0, 0, 0, 0, icmp_sysctl 124 }, 125 #if NIPIP > 0 || defined(MROUTING) 126 { SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR, 127 ipip_input, rip_output, 0, rip_ctloutput, 128 rip_usrreq, /* XXX */ 129 0, 0, 0, 0, 130 }, 131 #endif /* NIPIP > 0 || MROUTING */ 132 #if NGRE > 0 133 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR, 134 gre_input, rip_output, 0, rip_ctloutput, 135 rip_usrreq, 136 0, 0, 0, 0, 137 }, 138 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR, 139 gre_mobile_input, rip_output, 0, rip_ctloutput, 140 rip_usrreq, 141 0, 0, 0, 0, 142 }, 143 #endif /* NGRE > 0 */ 144 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR, 145 igmp_input, rip_output, 0, rip_ctloutput, 146 rip_usrreq, 147 igmp_init, igmp_fasttimo, igmp_slowtimo, 0, 148 }, 149 #ifdef TPIP 150 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD, 151 tpip_input, 0, tpip_ctlinput, tp_ctloutput, 152 tp_usrreq, 153 tp_init, 0, tp_slowtimo, tp_drain, 154 }, 155 #endif /* TPIP */ 156 /* EON (ISO CLNL over IP) */ 157 #ifdef EON 158 { SOCK_RAW, &inetdomain, IPPROTO_EON, 0, 159 eoninput, 0, eonctlinput, 0, 160 0, 161 eonprotoinit, 0, 0, 0, 162 }, 163 #endif /* EON */ 164 #ifdef NSIP 165 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR, 166 idpip_input, NULL, nsip_ctlinput, 0, 167 rip_usrreq, 168 0, 0, 0, 0, 169 }, 170 #endif /* NSIP */ 171 /* raw wildcard */ 172 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR, 173 rip_input, rip_output, 0, rip_ctloutput, 174 rip_usrreq, 175 rip_init, 0, 0, 0, 176 }, 177 }; 178 179 struct domain inetdomain = 180 { PF_INET, "internet", 0, 0, 0, 181 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0, 182 rn_inithead, 32, sizeof(struct sockaddr_in) }; 183 184 #define TCP_SYN_HASH_SIZE 293 185 #define TCP_SYN_BUCKET_SIZE 35 186 187 int tcp_syn_cache_size = TCP_SYN_HASH_SIZE; 188 int tcp_syn_cache_limit = TCP_SYN_HASH_SIZE*TCP_SYN_BUCKET_SIZE; 189 int tcp_syn_bucket_limit = 3*TCP_SYN_BUCKET_SIZE; 190 struct syn_cache_head tcp_syn_cache[TCP_SYN_HASH_SIZE]; 191 int tcp_syn_cache_interval = 8; /* runs timer every 4 seconds */ 192 int tcp_syn_cache_timeo = TCPTV_KEEP_INIT; 193
Indexes created Tue Sep 23 14:10:03 GMT 2025