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/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* Definitions for the TCP protocol.
*
* Version: @(#)tcp.h 1.0.2 04/28/93
*
* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_TCP_H
#define _LINUX_TCP_H
#define HEADER_SIZE 64 /* maximum header size */
struct tcphdr {
unsigned short source;
unsigned short dest;
unsigned long seq;
unsigned long ack_seq;
#if defined(__i386__)
unsigned short res1:4,
doff:4,
fin:1,
syn:1,
rst:1,
psh:1,
ack:1,
urg:1,
res2:2;
#else
#if defined(__mc680x0__)
unsigned short res2:2,
urg:1,
ack:1,
psh:1,
rst:1,
syn:1,
fin:1,
doff:4,
res1:4;
#else
#error "Adjust this structure for your cpu alignment rules"
#endif
#endif
unsigned short window;
unsigned short check;
unsigned short urg_ptr;
};
enum {
TCP_ESTABLISHED = 1,
TCP_SYN_SENT,
TCP_SYN_RECV,
TCP_FIN_WAIT1,
TCP_FIN_WAIT2,
TCP_TIME_WAIT,
TCP_CLOSE,
TCP_CLOSE_WAIT,
TCP_LAST_ACK,
TCP_LISTEN,
TCP_CLOSING /* now a valid state */
};
#endif /* _LINUX_TCP_H */
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