Annotation of sys/netinet/tcp_fsm.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: tcp_fsm.h,v 1.8 2004/07/06 13:52:31 markus Exp $ */
! 2: /* $NetBSD: tcp_fsm.h,v 1.6 1994/10/14 16:01:48 mycroft Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1982, 1986, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * @(#)tcp_fsm.h 8.1 (Berkeley) 6/10/93
! 33: */
! 34:
! 35: #ifndef _NETINET_TCP_FSM_H_
! 36: #define _NETINET_TCP_FSM_H_
! 37:
! 38: /*
! 39: * TCP FSM state definitions.
! 40: * Per RFC793, September, 1981.
! 41: */
! 42:
! 43: #define TCP_NSTATES 11
! 44:
! 45: #define TCPS_CLOSED 0 /* closed */
! 46: #define TCPS_LISTEN 1 /* listening for connection */
! 47: #define TCPS_SYN_SENT 2 /* active, have sent syn */
! 48: #define TCPS_SYN_RECEIVED 3 /* have sent and received syn */
! 49: /* states < TCPS_ESTABLISHED are those where connections not established */
! 50: #define TCPS_ESTABLISHED 4 /* established */
! 51: #define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
! 52: /* states > TCPS_CLOSE_WAIT are those where user has closed */
! 53: #define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
! 54: #define TCPS_CLOSING 7 /* closed xchd FIN; await ACK */
! 55: #define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
! 56: /* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
! 57: #define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
! 58: #define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
! 59:
! 60: #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED)
! 61: #define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED)
! 62: #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT)
! 63:
! 64: #ifdef TCPOUTFLAGS
! 65: /*
! 66: * Flags used when sending segments in tcp_output.
! 67: * Basic flags (TH_RST,TH_ACK,TH_SYN,TH_FIN) are totally
! 68: * determined by state, with the proviso that TH_FIN is sent only
! 69: * if all data queued for output is included in the segment.
! 70: */
! 71: u_char tcp_outflags[TCP_NSTATES] = {
! 72: TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK,
! 73: TH_ACK, TH_ACK,
! 74: TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_ACK, TH_ACK,
! 75: };
! 76: #endif /* TCPOUTFLAGS */
! 77:
! 78: #ifdef KPROF
! 79: int tcp_acounts[TCP_NSTATES][PRU_NREQ];
! 80: #endif /* KPROF */
! 81:
! 82: #ifdef TCPSTATES
! 83: const char *tcpstates[] = {
! 84: "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD",
! 85: "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING",
! 86: "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT",
! 87: };
! 88: #endif /* TCPSTATES */
! 89: #endif /* _NETINET_TCP_FSM_H_ */
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