| 1 |
1325 |
phoenix |
/*
|
| 2 |
|
|
* Copyright (c) 1982, 1986 Regents of the University of California.
|
| 3 |
|
|
* All rights reserved.
|
| 4 |
|
|
*
|
| 5 |
|
|
* Redistribution and use in source and binary forms are permitted
|
| 6 |
|
|
* provided that the above copyright notice and this paragraph are
|
| 7 |
|
|
* duplicated in all such forms and that any documentation,
|
| 8 |
|
|
* advertising materials, and other materials related to such
|
| 9 |
|
|
* distribution and use acknowledge that the software was developed
|
| 10 |
|
|
* by the University of California, Berkeley. The name of the
|
| 11 |
|
|
* University may not be used to endorse or promote products derived
|
| 12 |
|
|
* from this software without specific prior written permission.
|
| 13 |
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
| 14 |
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
| 15 |
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
| 16 |
|
|
*
|
| 17 |
|
|
* @(#)tcp.h 7.5 (Berkeley) 6/29/88
|
| 18 |
|
|
*/
|
| 19 |
|
|
|
| 20 |
|
|
#ifndef _NETINET_IP_TCP_H
|
| 21 |
|
|
#define _NETINET_IP_TCP_H
|
| 22 |
|
|
|
| 23 |
|
|
#include <endian.h>
|
| 24 |
|
|
#include <linux/socket.h>
|
| 25 |
|
|
#include <sys/types.h>
|
| 26 |
|
|
|
| 27 |
|
|
typedef u_int32_t tcp_seq;
|
| 28 |
|
|
/*
|
| 29 |
|
|
* TCP header.
|
| 30 |
|
|
* Per RFC 793, September, 1981.
|
| 31 |
|
|
*/
|
| 32 |
|
|
struct tcphdr {
|
| 33 |
|
|
u_short th_sport; /* source port */
|
| 34 |
|
|
u_short th_dport; /* destination port */
|
| 35 |
|
|
tcp_seq th_seq; /* sequence number */
|
| 36 |
|
|
tcp_seq th_ack; /* acknowledgement number */
|
| 37 |
|
|
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
| 38 |
|
|
u_char th_x2:4, /* (unused) */
|
| 39 |
|
|
th_off:4; /* data offset */
|
| 40 |
|
|
#endif
|
| 41 |
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
| 42 |
|
|
u_char th_off:4, /* data offset */
|
| 43 |
|
|
th_x2:4; /* (unused) */
|
| 44 |
|
|
#endif
|
| 45 |
|
|
u_char th_flags;
|
| 46 |
|
|
#define TH_FIN 0x01
|
| 47 |
|
|
#define TH_SYN 0x02
|
| 48 |
|
|
#define TH_RST 0x04
|
| 49 |
|
|
#define TH_PUSH 0x08
|
| 50 |
|
|
#define TH_ACK 0x10
|
| 51 |
|
|
#define TH_URG 0x20
|
| 52 |
|
|
u_short th_win; /* window */
|
| 53 |
|
|
u_short th_sum; /* checksum */
|
| 54 |
|
|
u_short th_urp; /* urgent pointer */
|
| 55 |
|
|
};
|
| 56 |
|
|
|
| 57 |
|
|
#define TCPOPT_EOL 0
|
| 58 |
|
|
#define TCPOPT_NOP 1
|
| 59 |
|
|
#define TCPOPT_MAXSEG 2
|
| 60 |
|
|
|
| 61 |
|
|
/*
|
| 62 |
|
|
* Default maximum segment size for TCP.
|
| 63 |
|
|
* With an IP MSS of 576, this is 536,
|
| 64 |
|
|
* but 512 is probably more convenient.
|
| 65 |
|
|
*/
|
| 66 |
|
|
#ifdef lint
|
| 67 |
|
|
#define TCP_MSS 536
|
| 68 |
|
|
#else
|
| 69 |
|
|
#define TCP_MSS MIN(512, IP_MSS - sizeof (struct tcpiphdr))
|
| 70 |
|
|
#endif
|
| 71 |
|
|
|
| 72 |
|
|
#endif /* _NETINET_TCP_H */
|
