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epoc32/include/libc/netinet/tcp.h
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
parent 0 061f57f2323e
child 4 837f303aceeb
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations 
     1 /* TCP.H

     2  * 

     3  * Portions copyright (c) 1997-1999 Symbian Ltd.  All rights reserved.

     4  */

     5 

     6 /** @file

     7 @publishedAll

     8 @released

     9 */

    10 

    11 /*

    12  * Copyright (c) 1982, 1986 Regents of the University of California.

    13  * All rights reserved.  The Berkeley software License Agreement

    14  * specifies the terms and conditions for redistribution.

    15  */

    16 

    17 #ifndef	_NETINET_TCP_H

    18 #define	_NETINET_TCP_H

    19 

    20 #ifdef	__cplusplus

    21 extern "C" {

    22 #endif

    23 

    24 typedef	u_long	tcp_seq;

    25 /**

    26 TCP header.

    27 Per RFC 793, September, 1981.

    28 @internalComponent

    29 */

    30 struct tcphdr {

    31 	u_short	th_sport;		/* source port */

    32 	u_short	th_dport;		/* destination port */

    33 	tcp_seq	th_seq;			/* sequence number */

    34 	tcp_seq	th_ack;			/* acknowledgement number */

    35 #ifdef _BIT_FIELDS_LTOH

    36 	u_int	th_x2:4,		/* (unused) */

    37 		th_off:4;		/* data offset */

    38 #else

    39 	u_int	th_off:4,		/* data offset */

    40 		th_x2:4;		/* (unused) */

    41 #endif

    42 	u_char	th_flags;

    43 /**

    44 @internalComponent

    45 */

    46 #define	TH_FIN	0x01

    47 /**

    48 @internalComponent

    49 */

    50 #define	TH_SYN	0x02

    51 /**

    52 @internalComponent

    53 */

    54 #define	TH_RST	0x04

    55 /**

    56 @internalComponent

    57 */

    58 #define	TH_PUSH	0x08

    59 /**

    60 @internalComponent

    61 */

    62 #define	TH_ACK	0x10

    63 /**

    64 @internalComponent

    65 */

    66 #define	TH_URG	0x20

    67 	u_short	th_win;			/* window */

    68 	u_short	th_sum;			/* checksum */

    69 	u_short	th_urp;			/* urgent pointer */

    70 };

    71 

    72 #define	TCPOPT_EOL	0

    73 #define	TCPOPT_NOP	1

    74 #define	TCPOPT_MAXSEG	2

    75 

    76 /**

    77 Default maximum segment size for TCP.

    78 With an IP MSS of 576, this is 536,

    79 but 512 is probably more convenient.

    80 */

    81 #ifdef	lint

    82 #define	TCP_MSS	536

    83 #else

    84 #define	TCP_MSS	MIN(512, IP_MSS - sizeof (struct tcpiphdr))

    85 #endif

    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 #define	TCP_NOTIFY_THRESHOLD		0x10

    94 #define	TCP_ABORT_THRESHOLD		0x11

    95 #define	TCP_CONN_NOTIFY_THRESHOLD	0x12

    96 #define	TCP_CONN_ABORT_THRESHOLD	0x13

    97 

    98 

    99 #ifdef	__cplusplus

   100 }

   101 #endif

   102 

   103 #endif	/* _NETINET_TCP_H */
test