tcp_fsm.h revision 1.5 1 1.5 cgd /* $NetBSD: tcp_fsm.h,v 1.5 1994/06/29 06:38:39 cgd Exp $ */
2 1.5 cgd
3 1.1 cgd /*
4 1.4 mycroft * Copyright (c) 1982, 1986, 1993
5 1.4 mycroft * The Regents of the University of California. All rights reserved.
6 1.1 cgd *
7 1.1 cgd * Redistribution and use in source and binary forms, with or without
8 1.1 cgd * modification, are permitted provided that the following conditions
9 1.1 cgd * are met:
10 1.1 cgd * 1. Redistributions of source code must retain the above copyright
11 1.1 cgd * notice, this list of conditions and the following disclaimer.
12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 cgd * notice, this list of conditions and the following disclaimer in the
14 1.1 cgd * documentation and/or other materials provided with the distribution.
15 1.1 cgd * 3. All advertising materials mentioning features or use of this software
16 1.1 cgd * must display the following acknowledgement:
17 1.1 cgd * This product includes software developed by the University of
18 1.1 cgd * California, Berkeley and its contributors.
19 1.1 cgd * 4. Neither the name of the University nor the names of its contributors
20 1.1 cgd * may be used to endorse or promote products derived from this software
21 1.1 cgd * without specific prior written permission.
22 1.1 cgd *
23 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 1.1 cgd * SUCH DAMAGE.
34 1.1 cgd *
35 1.5 cgd * @(#)tcp_fsm.h 8.1 (Berkeley) 6/10/93
36 1.1 cgd */
37 1.1 cgd
38 1.1 cgd /*
39 1.1 cgd * TCP FSM state definitions.
40 1.1 cgd * Per RFC793, September, 1981.
41 1.1 cgd */
42 1.1 cgd
43 1.1 cgd #define TCP_NSTATES 11
44 1.1 cgd
45 1.1 cgd #define TCPS_CLOSED 0 /* closed */
46 1.1 cgd #define TCPS_LISTEN 1 /* listening for connection */
47 1.1 cgd #define TCPS_SYN_SENT 2 /* active, have sent syn */
48 1.1 cgd #define TCPS_SYN_RECEIVED 3 /* have send and received syn */
49 1.1 cgd /* states < TCPS_ESTABLISHED are those where connections not established */
50 1.1 cgd #define TCPS_ESTABLISHED 4 /* established */
51 1.1 cgd #define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
52 1.1 cgd /* states > TCPS_CLOSE_WAIT are those where user has closed */
53 1.1 cgd #define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
54 1.1 cgd #define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */
55 1.1 cgd #define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
56 1.1 cgd /* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
57 1.1 cgd #define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
58 1.1 cgd #define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
59 1.1 cgd
60 1.1 cgd #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED)
61 1.1 cgd #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT)
62 1.1 cgd
63 1.1 cgd #ifdef TCPOUTFLAGS
64 1.1 cgd /*
65 1.1 cgd * Flags used when sending segments in tcp_output.
66 1.1 cgd * Basic flags (TH_RST,TH_ACK,TH_SYN,TH_FIN) are totally
67 1.1 cgd * determined by state, with the proviso that TH_FIN is sent only
68 1.1 cgd * if all data queued for output is included in the segment.
69 1.1 cgd */
70 1.1 cgd u_char tcp_outflags[TCP_NSTATES] = {
71 1.1 cgd TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK,
72 1.1 cgd TH_ACK, TH_ACK,
73 1.1 cgd TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_ACK, TH_ACK,
74 1.1 cgd };
75 1.1 cgd #endif
76 1.1 cgd
77 1.1 cgd #ifdef KPROF
78 1.1 cgd int tcp_acounts[TCP_NSTATES][PRU_NREQ];
79 1.1 cgd #endif
80 1.1 cgd
81 1.1 cgd #ifdef TCPSTATES
82 1.1 cgd char *tcpstates[] = {
83 1.1 cgd "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD",
84 1.1 cgd "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING",
85 1.1 cgd "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT",
86 1.1 cgd };
87 1.1 cgd #endif
88