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1 office 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