| 1 | /* Modified for emx by hv 1996
|
|---|
| 2 | *
|
|---|
| 3 | * Copyright (c) 1982, 1986 Regents of the University of California.
|
|---|
| 4 | * All rights reserved.
|
|---|
| 5 | *
|
|---|
| 6 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 7 | * modification, are permitted provided that the following conditions
|
|---|
| 8 | * are met:
|
|---|
| 9 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * 3. All advertising materials mentioning features or use of this software
|
|---|
| 15 | * must display the following acknowledgement:
|
|---|
| 16 | * This product includes software developed by the University of
|
|---|
| 17 | * California, Berkeley and its contributors.
|
|---|
| 18 | * 4. Neither the name of the University nor the names of its contributors
|
|---|
| 19 | * may be used to endorse or promote products derived from this software
|
|---|
| 20 | * without specific prior written permission.
|
|---|
| 21 | *
|
|---|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 32 | * SUCH DAMAGE.
|
|---|
| 33 | *
|
|---|
| 34 | * from: @(#)tcp.h 7.7 (Berkeley) 6/28/90
|
|---|
| 35 | * $Id: tcp.h,v 1.4 1994/01/08 21:21:56 mycroft Exp $
|
|---|
| 36 | */
|
|---|
| 37 |
|
|---|
| 38 | #ifndef _NETINET_TCP_H_
|
|---|
| 39 | #define _NETINET_TCP_H_
|
|---|
| 40 |
|
|---|
| 41 | #include <machine/endian.h>
|
|---|
| 42 |
|
|---|
| 43 | typedef u_long tcp_seq;
|
|---|
| 44 | /*
|
|---|
| 45 | * TCP header.
|
|---|
| 46 | * Per RFC 793, September, 1981.
|
|---|
| 47 | */
|
|---|
| 48 | struct tcphdr {
|
|---|
| 49 | u_short th_sport; /* source port */
|
|---|
| 50 | u_short th_dport; /* destination port */
|
|---|
| 51 | tcp_seq th_seq; /* sequence number */
|
|---|
| 52 | tcp_seq th_ack; /* acknowledgement number */
|
|---|
| 53 | #if BYTE_ORDER == LITTLE_ENDIAN
|
|---|
| 54 | u_char th_x2:4, /* (unused) */
|
|---|
| 55 | th_off:4; /* data offset */
|
|---|
| 56 | #endif
|
|---|
| 57 | #if BYTE_ORDER == BIG_ENDIAN
|
|---|
| 58 | u_char th_off:4, /* data offset */
|
|---|
| 59 | th_x2:4; /* (unused) */
|
|---|
| 60 | #endif
|
|---|
| 61 | u_char th_flags;
|
|---|
| 62 | #define TH_FIN 0x01
|
|---|
| 63 | #define TH_SYN 0x02
|
|---|
| 64 | #define TH_RST 0x04
|
|---|
| 65 | #define TH_PUSH 0x08
|
|---|
| 66 | #define TH_ACK 0x10
|
|---|
| 67 | #define TH_URG 0x20
|
|---|
| 68 | u_short th_win; /* window */
|
|---|
| 69 | u_short th_sum; /* checksum */
|
|---|
| 70 | u_short th_urp; /* urgent pointer */
|
|---|
| 71 | };
|
|---|
| 72 |
|
|---|
| 73 | #define TCPOPT_EOL 0
|
|---|
| 74 | #define TCPOPT_NOP 1
|
|---|
| 75 | #define TCPOPT_MAXSEG 2
|
|---|
| 76 |
|
|---|
| 77 | /*
|
|---|
| 78 | * Default maximum segment size for TCP.
|
|---|
| 79 | * With an IP MSS of 576, this is 536,
|
|---|
| 80 | * but 512 is probably more convenient.
|
|---|
| 81 | * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)).
|
|---|
| 82 | */
|
|---|
| 83 | #define TCP_MSS 512
|
|---|
| 84 |
|
|---|
| 85 | #define TCP_MAXWIN 65535 /* largest value for window */
|
|---|
| 86 |
|
|---|
| 87 | /*
|
|---|
| 88 | * User-settable options (used with setsockopt).
|
|---|
| 89 | */
|
|---|
| 90 | #define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
|
|---|
| 91 | #define TCP_MAXSEG 0x02 /* set maximum segment size */
|
|---|
| 92 |
|
|---|
| 93 | /* hv: this is a new data structure in TCPIPV4. */
|
|---|
| 94 | #ifdef TCPIPV4
|
|---|
| 95 | #include <netinet/tcp_var.h>
|
|---|
| 96 | #endif
|
|---|
| 97 |
|
|---|
| 98 | #endif /* !_NETINET_TCP_H_ */
|
|---|
