96 lines
3.4 KiB
C
96 lines
3.4 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1982, 1986, 1993
|
||
|
|
*The Regents of the University of California. All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
*
|
||
|
|
* This product includes software developed by the University of
|
||
|
|
* California, Berkeley and its contributors.
|
||
|
|
*
|
||
|
|
* 4. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef NETINET_TCP_H
|
||
|
|
#define NETINET_TCP_H
|
||
|
|
|
||
|
|
typedef uint32 tcp_seq;
|
||
|
|
|
||
|
|
struct tcphdr {
|
||
|
|
uint16 th_sport; /* src port */
|
||
|
|
uint16 th_dport; /* dest. port */
|
||
|
|
tcp_seq th_seq; /* seq number */
|
||
|
|
tcp_seq th_ack; /* ack number */
|
||
|
|
|
||
|
|
#if B_HOST_IS_BENDIAN
|
||
|
|
uint8 th_off:4,
|
||
|
|
th_x2:4;
|
||
|
|
#else
|
||
|
|
uint8 th_x2:4, /* unused */
|
||
|
|
th_off:4; /* data offset */
|
||
|
|
#endif
|
||
|
|
uint8 th_flags; /* ACK, FIN, PUSH, RST, SYN, URG */
|
||
|
|
uint16 th_win; /* advertised window */
|
||
|
|
uint16 th_sum; /* checksum */
|
||
|
|
uint16 th_urp; /* urgent offset */
|
||
|
|
} _PACKED;
|
||
|
|
|
||
|
|
#define TH_FIN 0x01
|
||
|
|
#define TH_SYN 0x02
|
||
|
|
#define TH_RST 0x04
|
||
|
|
#define TH_PUSH 0x08
|
||
|
|
#define TH_ACK 0x10
|
||
|
|
#define TH_URG 0x20
|
||
|
|
|
||
|
|
#define TCPOPT_EOL 0
|
||
|
|
#define TCPOPT_NOP 1
|
||
|
|
#define TCPOPT_MAXSEG 2
|
||
|
|
#define TCPOPT_WINDOW 3
|
||
|
|
#define TCPOPT_SACK_PERMITTED 4 /* Experimental */
|
||
|
|
#define TCPOPT_SACK 5 /* Experimental */
|
||
|
|
#define TCPOPT_TIMESTAMP 8
|
||
|
|
#define TCPOPT_SIGNATURE 19
|
||
|
|
|
||
|
|
#define MAX_TCPOPTLEN 40 /* Absolute maximum TCP options len */
|
||
|
|
|
||
|
|
#define TCPOLEN_MAXSEG 4
|
||
|
|
#define TCPOLEN_WINDOW 3
|
||
|
|
#define TCPOLEN_SACK 8 /* 2*sizeof(tcp_seq) */
|
||
|
|
#define TCPOLEN_SACK_PERMITTED 2
|
||
|
|
#define TCPOLEN_TIMESTAMP 10
|
||
|
|
#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */
|
||
|
|
#define TCPOLEN_SIGNATURE 18
|
||
|
|
|
||
|
|
#define TCPOPT_TSTAMP_HDR \
|
||
|
|
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
|
||
|
|
|
||
|
|
#define TCP_MSS 512
|
||
|
|
#define TCP_MAXWIN 65535
|
||
|
|
#define TCP_MAX_WINSHIFT 14
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* NETINET_TCP_H */
|