sl@0: /* TCP.H
sl@0:  * 
sl@0:  * Portions Copyright (c) 1997-1999 Nokia Corporation and/or its subsidiary(-ies).
sl@0:  * All rights reserved.
sl@0:  */
sl@0: 
sl@0: /** @file
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: 
sl@0: /*
sl@0:  * Copyright (c) 1982, 1986 Regents of the University of California.
sl@0:  * All rights reserved.  The Berkeley software License Agreement
sl@0:  * specifies the terms and conditions for redistribution.
sl@0:  */
sl@0: 
sl@0: #ifndef	_NETINET_TCP_H
sl@0: #define	_NETINET_TCP_H
sl@0: 
sl@0: #ifdef	__cplusplus
sl@0: extern "C" {
sl@0: #endif
sl@0: 
sl@0: typedef	u_long	tcp_seq;
sl@0: /**
sl@0: TCP header.
sl@0: Per RFC 793, September, 1981.
sl@0: @PublishedAll
sl@0: */
sl@0: struct tcphdr {
sl@0: 	u_short	th_sport;		/* source port */
sl@0: 	u_short	th_dport;		/* destination port */
sl@0: 	tcp_seq	th_seq;			/* sequence number */
sl@0: 	tcp_seq	th_ack;			/* acknowledgement number */
sl@0: #ifdef _BIT_FIELDS_LTOH
sl@0: 	u_int	th_x2:4,		/* (unused) */
sl@0: 		th_off:4;		/* data offset */
sl@0: #else
sl@0: 	u_int	th_off:4,		/* data offset */
sl@0: 		th_x2:4;		/* (unused) */
sl@0: #endif
sl@0: 	u_char	th_flags;
sl@0: /**
sl@0: @PublishedAll
sl@0: */
sl@0: #define	TH_FIN	0x01
sl@0: /**
sl@0: @PublishedAll
sl@0: */
sl@0: #define	TH_SYN	0x02
sl@0: /**
sl@0: @PublishedAll
sl@0: */
sl@0: #define	TH_RST	0x04
sl@0: /**
sl@0: @PublishedAll
sl@0: */
sl@0: #define	TH_PUSH	0x08
sl@0: /**
sl@0: @PublishedAll
sl@0: */
sl@0: #define	TH_ACK	0x10
sl@0: /**
sl@0: @PublishedAll
sl@0: */
sl@0: #define	TH_URG	0x20
sl@0: 	u_short	th_win;			/* window */
sl@0: 	u_short	th_sum;			/* checksum */
sl@0: 	u_short	th_urp;			/* urgent pointer */
sl@0: };
sl@0: 
sl@0: #define	TCPOPT_EOL	0
sl@0: #define	TCPOPT_NOP	1
sl@0: #define	TCPOPT_MAXSEG	2
sl@0: 
sl@0: /**
sl@0: Default maximum segment size for TCP.
sl@0: With an IP MSS of 576, this is 536,
sl@0: but 512 is probably more convenient.
sl@0: */
sl@0: #ifdef	lint
sl@0: #define	TCP_MSS	536
sl@0: #else
sl@0: #define	TCP_MSS	MIN(512, IP_MSS - sizeof (struct tcpiphdr))
sl@0: #endif
sl@0: 
sl@0: /**
sl@0: User-settable options (used with setsockopt).
sl@0: */
sl@0: #define	TCP_NODELAY	0x01	/* don't delay send to coalesce packets */
sl@0: #define	TCP_MAXSEG	0x02	/* set maximum segment size */
sl@0: 
sl@0: #define	TCP_NOTIFY_THRESHOLD		0x10
sl@0: #define	TCP_ABORT_THRESHOLD		0x11
sl@0: #define	TCP_CONN_NOTIFY_THRESHOLD	0x12
sl@0: #define	TCP_CONN_ABORT_THRESHOLD	0x13
sl@0: 
sl@0: 
sl@0: #ifdef	__cplusplus
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #endif	/* _NETINET_TCP_H */