libcrypto: Remove two no longer needed .PATHs.
[dragonfly.git] / sys / netinet / tcp_fsm.h
blob921ba053cbc546b708c3f3207efe0012c343e9cf
1 /*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
29 * @(#)tcp_fsm.h 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/netinet/tcp_fsm.h,v 1.14 1999/11/07 04:18:30 jlemon Exp $
31 * $DragonFly: src/sys/netinet/tcp_fsm.h,v 1.5 2004/09/22 08:54:27 joerg Exp $
34 #ifndef _NETINET_TCP_FSM_H_
35 #define _NETINET_TCP_FSM_H_
38 * TCP FSM state definitions.
39 * Per RFC793, September, 1981.
42 #define TCP_NSTATES 12
44 #define TCPS_TERMINATING 0
45 #define TCPS_CLOSED 1 /* closed */
46 #define TCPS_LISTEN 2 /* listening for connection */
47 #define TCPS_SYN_SENT 3 /* active, have sent syn */
48 #define TCPS_SYN_RECEIVED 4 /* have send and received syn */
49 /* states < TCPS_ESTABLISHED are those where connections not established */
50 #define TCPS_ESTABLISHED 5 /* established */
51 #define TCPS_CLOSE_WAIT 6 /* rcvd fin, waiting for close */
52 /* states > TCPS_CLOSE_WAIT are those where user has closed */
53 #define TCPS_FIN_WAIT_1 7 /* have closed, sent fin */
54 #define TCPS_CLOSING 8 /* closed xchd FIN; await FIN ACK */
55 #define TCPS_LAST_ACK 9 /* 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 10 /* have closed, fin is acked */
58 #define TCPS_TIME_WAIT 11 /* in 2*msl quiet wait after close */
60 /* for KAME src sync over BSD*'s */
61 #define TCP6_NSTATES TCP_NSTATES
62 #define TCP6S_CLOSED TCPS_CLOSED
63 #define TCP6S_LISTEN TCPS_LISTEN
64 #define TCP6S_SYN_SENT TCPS_SYN_SENT
65 #define TCP6S_SYN_RECEIVED TCPS_SYN_RECEIVED
66 #define TCP6S_ESTABLISHED TCPS_ESTABLISHED
67 #define TCP6S_CLOSE_WAIT TCPS_CLOSE_WAIT
68 #define TCP6S_FIN_WAIT_1 TCPS_FIN_WAIT_1
69 #define TCP6S_CLOSING TCPS_CLOSING
70 #define TCP6S_LAST_ACK TCPS_LAST_ACK
71 #define TCP6S_FIN_WAIT_2 TCPS_FIN_WAIT_2
72 #define TCP6S_TIME_WAIT TCPS_TIME_WAIT
74 #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED)
75 #define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED)
76 #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT)
78 #ifdef TCPOUTFLAGS
80 * Flags used when sending segments in tcp_output.
81 * Basic flags (TH_RST,TH_ACK,TH_SYN,TH_FIN) are totally
82 * determined by state, with the proviso that TH_FIN is sent only
83 * if all data queued for output is included in the segment.
85 static u_char tcp_outflags[TCP_NSTATES] = {
86 TH_RST|TH_ACK, /* 0, TERMINATING */
87 TH_RST|TH_ACK, /* 1, CLOSED */
88 0, /* 2, LISTEN */
89 TH_SYN, /* 3, SYN_SENT */
90 TH_SYN|TH_ACK, /* 4, SYN_RECEIVED */
91 TH_ACK, /* 5, ESTABLISHED */
92 TH_ACK, /* 6, CLOSE_WAIT */
93 TH_FIN|TH_ACK, /* 7, FIN_WAIT_1 */
94 TH_FIN|TH_ACK, /* 8, CLOSING */
95 TH_FIN|TH_ACK, /* 9, LAST_ACK */
96 TH_ACK, /* 10, FIN_WAIT_2 */
97 TH_ACK, /* 11, TIME_WAIT */
98 };
99 #endif
101 #ifdef KPROF
102 int tcp_acounts[TCP_NSTATES][PRU_NREQ];
103 #endif
105 #ifdef TCPSTATES
106 const char *tcpstates[] = {
107 "TERMINATING",
108 "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD",
109 "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING",
110 "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT",
112 #endif
114 #endif