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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 */ |