diff options
Diffstat (limited to 'tcp.h')
| -rw-r--r-- | tcp.h | 112 |
1 files changed, 112 insertions, 0 deletions
@@ -0,0 +1,112 @@ +/* @(#) $Header: /tcpdump/master/tcpdump/tcp.h,v 1.14 2007-12-09 00:30:47 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 */ + u_int8_t th_flags; + u_int16_t th_win; /* window */ + u_int16_t th_sum; /* checksum */ + u_int16_t th_urp; /* urgent pointer */ +}; + +#define TH_OFF(th) (((th)->th_offx2 & 0xf0) >> 4) + +/* TCP 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 +#define TH_ECNECHO 0x40 /* ECN Echo */ +#define TH_CWR 0x80 /* ECN Cwnd Reduced */ + + +#define TCPOPT_EOL 0 +#define TCPOPT_NOP 1 +#define TCPOPT_MAXSEG 2 +#define TCPOLEN_MAXSEG 4 +#define TCPOPT_WSCALE 3 /* window scale factor (rfc1323) */ +#define TCPOPT_SACKOK 4 /* selective ack ok (rfc2018) */ +#define TCPOPT_SACK 5 /* selective ack (rfc2018) */ +#define TCPOPT_ECHO 6 /* echo (rfc1072) */ +#define TCPOPT_ECHOREPLY 7 /* echo (rfc1072) */ +#define TCPOPT_TIMESTAMP 8 /* timestamp (rfc1323) */ +#define TCPOLEN_TIMESTAMP 10 +#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ +#define TCPOPT_CC 11 /* T/TCP CC options (rfc1644) */ +#define TCPOPT_CCNEW 12 /* T/TCP CC options (rfc1644) */ +#define TCPOPT_CCECHO 13 /* T/TCP CC options (rfc1644) */ +#define TCPOPT_SIGNATURE 19 /* Keyed MD5 (rfc2385) */ +#define TCPOLEN_SIGNATURE 18 +#define TCP_SIGLEN 16 /* length of an option 19 digest */ +#define TCPOPT_AUTH 20 /* Enhanced AUTH option */ +#define TCPOPT_UTO 28 /* tcp user timeout (rfc5482) */ +#define TCPOLEN_UTO 4 + + +#define TCPOPT_TSTAMP_HDR \ + (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) + +#ifndef TELNET_PORT +#define TELNET_PORT 23 +#endif +#ifndef BGP_PORT +#define BGP_PORT 179 +#endif +#define NETBIOS_SSN_PORT 139 +#ifndef PPTP_PORT +#define PPTP_PORT 1723 +#endif +#define BEEP_PORT 10288 +#ifndef NFS_PORT +#define NFS_PORT 2049 +#endif +#define MSDP_PORT 639 +#define RPKI_RTR_PORT 2222 /* experimental up until sidr-wg registers a well-known port */ +#define LDP_PORT 646 +#ifndef SMB_PORT +#define SMB_PORT 445 +#endif |