1/* 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)tcp.h 8.1 (Berkeley) 6/10/93 34 */ 35 36/* 37 * TCP header. 38 * Per RFC 793, September, 1981. 39 */ 40struct tcphdr { 41 nd_uint16_t th_sport; /* source port */ 42 nd_uint16_t th_dport; /* destination port */ 43 nd_uint32_t th_seq; /* sequence number */ 44 nd_uint32_t th_ack; /* acknowledgement number */ 45 nd_uint8_t th_offx2; /* data offset, rsvd */ 46 nd_uint8_t th_flags; 47 nd_uint16_t th_win; /* window */ 48 nd_uint16_t th_sum; /* checksum */ 49 nd_uint16_t th_urp; /* urgent pointer */ 50}; 51 52#define TH_OFF(th) ((GET_U_1((th)->th_offx2) & 0xf0) >> 4) 53 54/* TCP flags */ 55#define TH_FIN 0x01 56#define TH_SYN 0x02 57#define TH_RST 0x04 58#define TH_PUSH 0x08 59#define TH_ACK 0x10 60#define TH_URG 0x20 61#define TH_ECNECHO 0x40 /* ECN Echo */ 62#define TH_CWR 0x80 /* ECN Cwnd Reduced */ 63 64 65#define TCPOPT_EOL 0 66#define TCPOPT_NOP 1 67#define TCPOPT_MAXSEG 2 68#define TCPOLEN_MAXSEG 4 69#define TCPOPT_WSCALE 3 /* window scale factor (rfc1323) */ 70#define TCPOPT_SACKOK 4 /* selective ack ok (rfc2018) */ 71#define TCPOPT_SACK 5 /* selective ack (rfc2018) */ 72#define TCPOPT_ECHO 6 /* echo (rfc1072) */ 73#define TCPOPT_ECHOREPLY 7 /* echo (rfc1072) */ 74#define TCPOPT_TIMESTAMP 8 /* timestamp (rfc1323) */ 75#define TCPOLEN_TIMESTAMP 10 76#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ 77#define TCPOPT_CC 11 /* T/TCP CC options (rfc1644) */ 78#define TCPOPT_CCNEW 12 /* T/TCP CC options (rfc1644) */ 79#define TCPOPT_CCECHO 13 /* T/TCP CC options (rfc1644) */ 80#define TCPOPT_SIGNATURE 19 /* Keyed MD5 (rfc2385) */ 81#define TCPOLEN_SIGNATURE 18 82#define TCP_SIGLEN 16 /* length of an option 19 digest */ 83#define TCPOPT_SCPS 20 /* SCPS-TP (CCSDS 714.0-B-2) */ 84#define TCPOPT_UTO 28 /* tcp user timeout (rfc5482) */ 85#define TCPOLEN_UTO 4 86#define TCPOPT_TCPAO 29 /* TCP authentication option (rfc5925) */ 87#define TCPOPT_MPTCP 30 /* MPTCP options */ 88#define TCPOPT_FASTOPEN 34 /* TCP Fast Open (rfc7413) */ 89#define TCPOPT_EXPERIMENT2 254 /* experimental headers (rfc4727) */ 90 91#define TCPOPT_TSTAMP_HDR \ 92 (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) 93 94#ifndef FTP_PORT 95#define FTP_PORT 21 96#endif 97#ifndef SSH_PORT 98#define SSH_PORT 22 99#endif 100#ifndef TELNET_PORT 101#define TELNET_PORT 23 102#endif 103#ifndef SMTP_PORT 104#define SMTP_PORT 25 105#endif 106#ifndef WHOIS_PORT 107#define WHOIS_PORT 43 108#endif 109#ifndef NAMESERVER_PORT 110#define NAMESERVER_PORT 53 111#endif 112#ifndef HTTP_PORT 113#define HTTP_PORT 80 114#endif 115#ifndef NETBIOS_SSN_PORT 116#define NETBIOS_SSN_PORT 139 /* RFC 1001, RFC 1002 */ 117#endif 118#ifndef BGP_PORT 119#define BGP_PORT 179 120#endif 121#ifndef RPKI_RTR_PORT 122#define RPKI_RTR_PORT 323 123#endif 124#ifndef SMB_PORT 125#define SMB_PORT 445 126#endif 127#ifndef RTSP_PORT 128#define RTSP_PORT 554 129#endif 130#ifndef MSDP_PORT 131#define MSDP_PORT 639 132#endif 133#ifndef LDP_PORT 134#define LDP_PORT 646 135#endif 136#ifndef PPTP_PORT 137#define PPTP_PORT 1723 138#endif 139#ifndef NFS_PORT 140#define NFS_PORT 2049 141#endif 142#ifndef OPENFLOW_PORT_OLD 143#define OPENFLOW_PORT_OLD 6633 144#endif 145#ifndef OPENFLOW_PORT_IANA 146#define OPENFLOW_PORT_IANA 6653 147#endif 148#ifndef HTTP_PORT_ALT 149#define HTTP_PORT_ALT 8080 150#endif 151#ifndef RTSP_PORT_ALT 152#define RTSP_PORT_ALT 8554 153#endif 154#ifndef BEEP_PORT 155#define BEEP_PORT 10288 156#endif 157#ifndef REDIS_PORT 158#define REDIS_PORT 6379 159#endif 160