| /*- |
| * Copyright (c) 1982, 1986, 1993 |
| * The Regents of the University of California. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)tcp_fsm.h 8.1 (Berkeley) 6/10/93 |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_NETINET_TCP_FSM_H_ |
| #define _BSD_NETINET_TCP_FSM_H_ |
| |
| /* |
| * TCP FSM state definitions. |
| * |
| * Per RFC793, September, 1981. |
| */ |
| |
| #define TCP_NSTATES 11 |
| |
| #define TCPS_CLOSED 0 /* closed */ |
| #define TCPS_LISTEN 1 /* listening for connection */ |
| #define TCPS_SYN_SENT 2 /* active, have sent syn */ |
| #define TCPS_SYN_RECEIVED 3 /* have sent and received syn */ |
| /* states < TCPS_ESTABLISHED are those where connections not established */ |
| #define TCPS_ESTABLISHED 4 /* established */ |
| #define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */ |
| /* states > TCPS_CLOSE_WAIT are those where user has closed */ |
| #define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */ |
| #define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */ |
| #define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */ |
| /* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */ |
| #define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */ |
| #define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */ |
| |
| /* for KAME src sync over BSD*'s */ |
| #define TCP6_NSTATES TCP_NSTATES |
| #define TCP6S_CLOSED TCPS_CLOSED |
| #define TCP6S_LISTEN TCPS_LISTEN |
| #define TCP6S_SYN_SENT TCPS_SYN_SENT |
| #define TCP6S_SYN_RECEIVED TCPS_SYN_RECEIVED |
| #define TCP6S_ESTABLISHED TCPS_ESTABLISHED |
| #define TCP6S_CLOSE_WAIT TCPS_CLOSE_WAIT |
| #define TCP6S_FIN_WAIT_1 TCPS_FIN_WAIT_1 |
| #define TCP6S_CLOSING TCPS_CLOSING |
| #define TCP6S_LAST_ACK TCPS_LAST_ACK |
| #define TCP6S_FIN_WAIT_2 TCPS_FIN_WAIT_2 |
| #define TCP6S_TIME_WAIT TCPS_TIME_WAIT |
| |
| #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED) |
| #define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED) |
| #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT) |
| |
| #ifdef TCPOUTFLAGS |
| /* |
| * Flags used when sending segments in tcp_output. Basic flags (TH_RST, |
| * TH_ACK,TH_SYN,TH_FIN) are totally determined by state, with the proviso |
| * that TH_FIN is sent only if all data queued for output is included in the |
| * segment. |
| */ |
| static u_char tcp_outflags[TCP_NSTATES] = { |
| TH_RST|TH_ACK, /* 0, CLOSED */ |
| 0, /* 1, LISTEN */ |
| TH_SYN, /* 2, SYN_SENT */ |
| TH_SYN|TH_ACK, /* 3, SYN_RECEIVED */ |
| TH_ACK, /* 4, ESTABLISHED */ |
| TH_ACK, /* 5, CLOSE_WAIT */ |
| TH_FIN|TH_ACK, /* 6, FIN_WAIT_1 */ |
| TH_FIN|TH_ACK, /* 7, CLOSING */ |
| TH_FIN|TH_ACK, /* 8, LAST_ACK */ |
| TH_ACK, /* 9, FIN_WAIT_2 */ |
| TH_ACK, /* 10, TIME_WAIT */ |
| }; |
| #endif |
| |
| #ifdef KPROF |
| int tcp_acounts[TCP_NSTATES][PRU_NREQ]; |
| #endif |
| |
| #ifdef TCPSTATES |
| static char const * const tcpstates[] = { |
| "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", |
| "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING", |
| "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT", |
| }; |
| #endif |
| |
| #endif |