diff options
author | fenner <fenner@FreeBSD.org> | 2001-04-03 07:45:48 +0000 |
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committer | fenner <fenner@FreeBSD.org> | 2001-04-03 07:45:48 +0000 |
commit | f7d9a5e270bfcbb075a637a52416185441d33d8d (patch) | |
tree | e79d9e6f58638911260708c956a0d44069782cda /contrib/tcpdump/tcp.h | |
parent | 04f715925eb0f85e1b7d21424cdbb3f6f1fa0b41 (diff) | |
parent | ace14a2b50f2cc05c079d0b9137b49066dbb1206 (diff) | |
download | FreeBSD-src-f7d9a5e270bfcbb075a637a52416185441d33d8d.zip FreeBSD-src-f7d9a5e270bfcbb075a637a52416185441d33d8d.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r75115,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'contrib/tcpdump/tcp.h')
-rw-r--r-- | contrib/tcpdump/tcp.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/contrib/tcpdump/tcp.h b/contrib/tcpdump/tcp.h new file mode 100644 index 0000000..a93c14f --- /dev/null +++ b/contrib/tcpdump/tcp.h @@ -0,0 +1,75 @@ +/* @(#) $Header: /tcpdump/master/tcpdump/tcp.h,v 1.7 2000/10/03 09:17:41 guy Exp $ (LBL) */ +/* + * 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. + * + * @(#)tcp.h 8.1 (Berkeley) 6/10/93 + */ + +typedef u_int32_t tcp_seq; +/* + * TCP header. + * Per RFC 793, September, 1981. + */ +struct tcphdr { + u_int16_t th_sport; /* source port */ + u_int16_t th_dport; /* destination port */ + tcp_seq th_seq; /* sequence number */ + tcp_seq th_ack; /* acknowledgement number */ + u_int8_t th_offx2; /* data offset, rsvd */ +#define TH_OFF(th) (((th)->th_offx2 & 0xf0) >> 4) + u_int8_t th_flags; +#define TH_FIN 0x01 +#define TH_SYN 0x02 +#define TH_RST 0x04 +#define TH_PUSH 0x08 +#define TH_ACK 0x10 +#define TH_URG 0x20 + u_int16_t th_win; /* window */ + u_int16_t th_sum; /* checksum */ + u_int16_t th_urp; /* urgent pointer */ +}; + +#define TCPOPT_EOL 0 +#define TCPOPT_NOP 1 +#define TCPOPT_MAXSEG 2 +#define TCPOLEN_MAXSEG 4 +#define TCPOPT_WINDOW 3 +#define TCPOLEN_WINDOW 3 +#define TCPOPT_SACK_PERMITTED 4 /* Experimental */ +#define TCPOLEN_SACK_PERMITTED 2 +#define TCPOPT_SACK 5 /* Experimental */ +#define TCPOPT_TIMESTAMP 8 +#define TCPOLEN_TIMESTAMP 10 +#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ + +#define TCPOPT_TSTAMP_HDR \ + (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) |