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 */ 40 struct 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