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 typedef uint32_t tcp_seq; 37 /* 38 * TCP header. 39 * Per RFC 793, September, 1981. 40 */ 41 struct tcphdr { 42 uint16_t th_sport; /* source port */ 43 uint16_t th_dport; /* destination port */ 44 tcp_seq th_seq; /* sequence number */ 45 tcp_seq th_ack; /* acknowledgement number */ 46 uint8_t th_offx2; /* data offset, rsvd */ 47 uint8_t th_flags; 48 uint16_t th_win; /* window */ 49 uint16_t th_sum; /* checksum */ 50 uint16_t th_urp; /* urgent pointer */ 51 } UNALIGNED; 52 53 #define TH_OFF(th) (((th)->th_offx2 & 0xf0) >> 4) 54 55 /* TCP flags */ 56 #define TH_FIN 0x01 57 #define TH_SYN 0x02 58 #define TH_RST 0x04 59 #define TH_PUSH 0x08 60 #define TH_ACK 0x10 61 #define TH_URG 0x20 62 #define TH_ECNECHO 0x40 /* ECN Echo */ 63 #define TH_CWR 0x80 /* ECN Cwnd Reduced */ 64 65 66 #define TCPOPT_EOL 0 67 #define TCPOPT_NOP 1 68 #define TCPOPT_MAXSEG 2 69 #define TCPOLEN_MAXSEG 4 70 #define TCPOPT_WSCALE 3 /* window scale factor (rfc1323) */ 71 #define TCPOPT_SACKOK 4 /* selective ack ok (rfc2018) */ 72 #define TCPOPT_SACK 5 /* selective ack (rfc2018) */ 73 #define TCPOPT_ECHO 6 /* echo (rfc1072) */ 74 #define TCPOPT_ECHOREPLY 7 /* echo (rfc1072) */ 75 #define TCPOPT_TIMESTAMP 8 /* timestamp (rfc1323) */ 76 #define TCPOLEN_TIMESTAMP 10 77 #define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ 78 #define TCPOPT_CC 11 /* T/TCP CC options (rfc1644) */ 79 #define TCPOPT_CCNEW 12 /* T/TCP CC options (rfc1644) */ 80 #define TCPOPT_CCECHO 13 /* T/TCP CC options (rfc1644) */ 81 #define TCPOPT_SIGNATURE 19 /* Keyed MD5 (rfc2385) */ 82 #define TCPOLEN_SIGNATURE 18 83 #define TCP_SIGLEN 16 /* length of an option 19 digest */ 84 #define TCPOPT_AUTH 20 /* Enhanced AUTH option */ 85 #define TCPOPT_UTO 28 /* tcp user timeout (rfc5482) */ 86 #define TCPOLEN_UTO 4 87 #define TCPOPT_MPTCP 30 /* MPTCP options */ 88 #define TCPOPT_EXPERIMENT2 254 /* experimental headers (rfc4727) */ 89 90 #define TCPOPT_TSTAMP_HDR \ 91 (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) 92 93 #ifndef TELNET_PORT 94 #define TELNET_PORT 23 95 #endif 96 #ifndef SMTP_PORT 97 #define SMTP_PORT 25 98 #endif 99 #ifndef BGP_PORT 100 #define BGP_PORT 179 101 #endif 102 #define NETBIOS_SSN_PORT 139 103 #ifndef OPENFLOW_PORT_OLD 104 #define OPENFLOW_PORT_OLD 6633 105 #endif 106 #ifndef OPENFLOW_PORT_IANA 107 #define OPENFLOW_PORT_IANA 6653 108 #endif 109 #ifndef PPTP_PORT 110 #define PPTP_PORT 1723 111 #endif 112 #define BEEP_PORT 10288 113 #ifndef NFS_PORT 114 #define NFS_PORT 2049 115 #endif 116 #define MSDP_PORT 639 117 #define RPKI_RTR_PORT 323 118 #define LDP_PORT 646 119 #ifndef SMB_PORT 120 #define SMB_PORT 445 121 #endif 122 #ifndef HTTP_PORT 123 #define HTTP_PORT 80 124 #endif 125 #ifndef HTTP_PORT_ALT 126 #define HTTP_PORT_ALT 8080 127 #endif 128 #ifndef RTSP_PORT 129 #define RTSP_PORT 554 130 #endif 131 #ifndef RTSP_PORT_ALT 132 #define RTSP_PORT_ALT 8554 133 #endif 134 #ifndef FTP_PORT 135 #define FTP_PORT 21 136 #endif 137
