diff options
Diffstat (limited to 'c/src/exec/libnetworking/netinet/tcp_fsm.h')
| -rw-r--r-- | c/src/exec/libnetworking/netinet/tcp_fsm.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/c/src/exec/libnetworking/netinet/tcp_fsm.h b/c/src/exec/libnetworking/netinet/tcp_fsm.h new file mode 100644 index 0000000000..3f2c12f54f --- /dev/null +++ b/c/src/exec/libnetworking/netinet/tcp_fsm.h @@ -0,0 +1,92 @@ +/* + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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 + * $Id$ + */ + +#ifndef _NETINET_TCP_FSM_H_ +#define _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 send 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 */ + +#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, TH_SYN, TH_SYN|TH_ACK, + TH_ACK, TH_ACK, + TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_ACK, TH_ACK, +}; +#endif + +#ifdef KPROF +int tcp_acounts[TCP_NSTATES][PRU_NREQ]; +#endif + +#ifdef TCPSTATES +char *tcpstates[] = { + "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", + "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING", + "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT", +}; +#endif + +#endif |