1/* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1982, 1986, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)tcp_fsm.h 8.1 (Berkeley) 6/10/93 61 * $FreeBSD: src/sys/netinet/tcp_fsm.h,v 1.14 1999/11/07 04:18:30 jlemon Exp $ 62 */ 63 64#ifndef _NETINET_TCP_FSM_H_ 65#define _NETINET_TCP_FSM_H_ 66#include <sys/appleapiopts.h> 67 68/* 69 * TCP FSM state definitions. 70 * Per RFC793, September, 1981. 71 */ 72 73#define TCP_NSTATES 11 74 75#define TCPS_CLOSED 0 /* closed */ 76#define TCPS_LISTEN 1 /* listening for connection */ 77#define TCPS_SYN_SENT 2 /* active, have sent syn */ 78#define TCPS_SYN_RECEIVED 3 /* have send and received syn */ 79/* states < TCPS_ESTABLISHED are those where connections not established */ 80#define TCPS_ESTABLISHED 4 /* established */ 81#define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */ 82/* states > TCPS_CLOSE_WAIT are those where user has closed */ 83#define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */ 84#define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */ 85#define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */ 86/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */ 87#define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */ 88#define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */ 89 90/* for KAME src sync over BSD*'s */ 91#define TCP6_NSTATES TCP_NSTATES 92#define TCP6S_CLOSED TCPS_CLOSED 93#define TCP6S_LISTEN TCPS_LISTEN 94#define TCP6S_SYN_SENT TCPS_SYN_SENT 95#define TCP6S_SYN_RECEIVED TCPS_SYN_RECEIVED 96#define TCP6S_ESTABLISHED TCPS_ESTABLISHED 97#define TCP6S_CLOSE_WAIT TCPS_CLOSE_WAIT 98#define TCP6S_FIN_WAIT_1 TCPS_FIN_WAIT_1 99#define TCP6S_CLOSING TCPS_CLOSING 100#define TCP6S_LAST_ACK TCPS_LAST_ACK 101#define TCP6S_FIN_WAIT_2 TCPS_FIN_WAIT_2 102#define TCP6S_TIME_WAIT TCPS_TIME_WAIT 103 104#define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED) 105#define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED) 106#define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT) 107 108#ifdef KERNEL_PRIVATE 109#ifdef TCPOUTFLAGS 110/* 111 * Flags used when sending segments in tcp_output. 112 * Basic flags (TH_RST,TH_ACK,TH_SYN,TH_FIN) are totally 113 * determined by state, with the proviso that TH_FIN is sent only 114 * if all data queued for output is included in the segment. 115 */ 116static u_char tcp_outflags[TCP_NSTATES] = { 117 TH_RST|TH_ACK, /* 0, CLOSED */ 118 0, /* 1, LISTEN */ 119 TH_SYN, /* 2, SYN_SENT */ 120 TH_SYN|TH_ACK, /* 3, SYN_RECEIVED */ 121 TH_ACK, /* 4, ESTABLISHED */ 122 TH_ACK, /* 5, CLOSE_WAIT */ 123 TH_FIN|TH_ACK, /* 6, FIN_WAIT_1 */ 124 TH_FIN|TH_ACK, /* 7, CLOSING */ 125 TH_FIN|TH_ACK, /* 8, LAST_ACK */ 126 TH_ACK, /* 9, FIN_WAIT_2 */ 127 TH_ACK, /* 10, TIME_WAIT */ 128}; 129#endif 130#endif /* KERNEL_PRIVATE */ 131 132#if KPROF 133#ifdef KERNEL_PRIVATE 134int tcp_acounts[TCP_NSTATES][PRU_NREQ]; 135#endif /* KERNEL_PRIVATE */ 136#endif 137 138#ifdef TCPSTATES 139char *tcpstates[] = { 140 "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", 141 "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING", 142 "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT" 143}; 144#endif 145 146#endif 147