ReactOS 0.4.15-dev-8219-ge8b88cf
tcpdef.h
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1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions for the TCP protocol.
7 *
8 * Version: @(#)tcp.h 1.0.2 04/28/93
9 *
10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 */
17
18#pragma once
19
20#include "linux.h"
21
22struct tcphdr {
27//#if defined(__LITTLE_ENDIAN_BITFIELD)
30 fin:1,
31 syn:1,
32 rst:1,
33 psh:1,
34 ack:1,
35 urg:1,
36 ece:1,
37 cwr:1;
38/*#elif defined(__BIG_ENDIAN_BITFIELD)
39 __u16 doff:4,
40 res1:4,
41 cwr:1,
42 ece:1,
43 urg:1,
44 ack:1,
45 psh:1,
46 rst:1,
47 syn:1,
48 fin:1;
49#else
50#error "Adjust your <asm/byteorder.h> defines"
51#endif */
55};
56
57
58enum {
69 TCP_CLOSING, /* now a valid state */
70
71 TCP_MAX_STATES /* Leave at the end! */
72};
73
74#define TCP_STATE_MASK 0xF
75#define TCP_ACTION_FIN (1 << 7)
76
77enum {
78 TCPF_ESTABLISHED = (1 << 1),
79 TCPF_SYN_SENT = (1 << 2),
80 TCPF_SYN_RECV = (1 << 3),
81 TCPF_FIN_WAIT1 = (1 << 4),
82 TCPF_FIN_WAIT2 = (1 << 5),
83 TCPF_TIME_WAIT = (1 << 6),
84 TCPF_CLOSE = (1 << 7),
85 TCPF_CLOSE_WAIT = (1 << 8),
86 TCPF_LAST_ACK = (1 << 9),
87 TCPF_LISTEN = (1 << 10),
88 TCPF_CLOSING = (1 << 11)
89};
90
91/*
92 * The union cast uses a gcc extension to avoid aliasing problems
93 * (union is compatible to any of its members)
94 * This means this part of the code is -fstrict-aliasing safe now.
95 */
97 struct tcphdr hdr;
99};
100
101#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])
102
103enum {
104 TCP_FLAG_CWR = 0x00800000, // __constant_htonl(0x00800000),
105 TCP_FLAG_ECE = 0x00400000, //__constant_htonl(0x00400000),
106 TCP_FLAG_URG = 0x00200000, //__constant_htonl(0x00200000),
107 TCP_FLAG_ACK = 0x00100000, //__constant_htonl(0x00100000),
108 TCP_FLAG_PSH = 0x00080000, //__constant_htonl(0x00080000),
109 TCP_FLAG_RST = 0x00040000, //__constant_htonl(0x00040000),
110 TCP_FLAG_SYN = 0x00020000, //__constant_htonl(0x00020000),
111 TCP_FLAG_FIN = 0x00010000, //__constant_htonl(0x00010000),
112 TCP_RESERVED_BITS = 0x0F000000, //__constant_htonl(0x0F000000),
113 TCP_DATA_OFFSET = 0xF0000000, //__constant_htonl(0xF0000000)
114};
115
116/* TCP socket options */
117#define TCP_NODELAY 1 /* Turn off Nagle's algorithm. */
118#define TCP_MAXSEG 2 /* Limit MSS */
119#define TCP_CORK 3 /* Never send partially complete segments */
120#define TCP_KEEPIDLE 4 /* Start keepalives after this period */
121#define TCP_KEEPINTVL 5 /* Interval between keepalives */
122#define TCP_KEEPCNT 6 /* Number of keepalives before death */
123#define TCP_SYNCNT 7 /* Number of SYN retransmits */
124#define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */
125#define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */
126#define TCP_WINDOW_CLAMP 10 /* Bound advertised window */
127#define TCP_INFO 11 /* Information about this connection. */
128#define TCP_QUICKACK 12 /* Block/reenable quick acks */
129
130#define TCPI_OPT_TIMESTAMPS 1
131#define TCPI_OPT_SACK 2
132#define TCPI_OPT_WSCALE 4
133#define TCPI_OPT_ECN 8
134
136{
138#define TCPF_CA_Open (1<<TCP_CA_Open)
140#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
142#define TCPF_CA_CWR (1<<TCP_CA_CWR)
144#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
145 TCP_CA_Loss = 4
146#define TCPF_CA_Loss (1<<TCP_CA_Loss)
148
150{
158
163
169
170 /* Times. */
172 __u32 tcpi_last_ack_sent; /* Not remembered, sorry. */
175
176 /* Metrics. */
185};
u16 __u16
Definition: btrfs.h:18
u8 __u8
Definition: btrfs.h:17
u32 __u32
Definition: btrfs.h:19
__u32 tcpi_snd_cwnd
Definition: tcpdef.h:182
__u32 tcpi_last_data_sent
Definition: tcpdef.h:171
__u32 tcpi_last_ack_recv
Definition: tcpdef.h:174
__u8 tcpi_rcv_wscale
Definition: tcpdef.h:157
__u32 tcpi_rcv_mss
Definition: tcpdef.h:162
__u8 tcpi_options
Definition: tcpdef.h:156
__u32 tcpi_unacked
Definition: tcpdef.h:164
__u32 tcpi_retrans
Definition: tcpdef.h:167
__u32 tcpi_reordering
Definition: tcpdef.h:184
__u8 tcpi_probes
Definition: tcpdef.h:154
__u32 tcpi_rcv_ssthresh
Definition: tcpdef.h:178
__u32 tcpi_snd_mss
Definition: tcpdef.h:161
__u32 tcpi_sacked
Definition: tcpdef.h:165
__u32 tcpi_last_ack_sent
Definition: tcpdef.h:172
__u32 tcpi_advmss
Definition: tcpdef.h:183
__u8 tcpi_retransmits
Definition: tcpdef.h:153
__u32 tcpi_fackets
Definition: tcpdef.h:168
__u32 tcpi_ato
Definition: tcpdef.h:160
__u32 tcpi_rtt
Definition: tcpdef.h:179
__u32 tcpi_lost
Definition: tcpdef.h:166
__u32 tcpi_pmtu
Definition: tcpdef.h:177
__u32 tcpi_rto
Definition: tcpdef.h:159
__u32 tcpi_snd_ssthresh
Definition: tcpdef.h:181
__u8 tcpi_ca_state
Definition: tcpdef.h:152
__u32 tcpi_rttvar
Definition: tcpdef.h:180
__u8 tcpi_state
Definition: tcpdef.h:151
__u8 tcpi_snd_wscale
Definition: tcpdef.h:157
__u8 tcpi_backoff
Definition: tcpdef.h:155
__u32 tcpi_last_data_recv
Definition: tcpdef.h:173
Definition: tcpdef.h:22
__u16 dest
Definition: tcpdef.h:24
__u32 ack_seq
Definition: tcpdef.h:26
__u16 urg
Definition: tcpdef.h:35
__u32 seq
Definition: tcpdef.h:25
__u16 window
Definition: tcpdef.h:52
__u16 fin
Definition: tcpdef.h:30
__u16 urg_ptr
Definition: tcpdef.h:54
__u16 ece
Definition: tcpdef.h:36
__u16 res1
Definition: tcpdef.h:28
__u16 psh
Definition: tcpdef.h:33
__u16 check
Definition: tcpdef.h:53
__u16 doff
Definition: tcpdef.h:29
__u16 ack
Definition: tcpdef.h:34
__u16 cwr
Definition: tcpdef.h:37
__u16 syn
Definition: tcpdef.h:31
__u16 rst
Definition: tcpdef.h:32
__u16 source
Definition: tcpdef.h:23
@ TCP_ESTABLISHED
Definition: tcpdef.h:59
@ TCP_LISTEN
Definition: tcpdef.h:68
@ TCP_SYN_RECV
Definition: tcpdef.h:61
@ TCP_LAST_ACK
Definition: tcpdef.h:67
@ TCP_CLOSE
Definition: tcpdef.h:65
@ TCP_CLOSE_WAIT
Definition: tcpdef.h:66
@ TCP_CLOSING
Definition: tcpdef.h:69
@ TCP_FIN_WAIT2
Definition: tcpdef.h:63
@ TCP_TIME_WAIT
Definition: tcpdef.h:64
@ TCP_SYN_SENT
Definition: tcpdef.h:60
@ TCP_MAX_STATES
Definition: tcpdef.h:71
@ TCP_FIN_WAIT1
Definition: tcpdef.h:62
tcp_ca_state
Definition: tcpdef.h:136
@ TCP_CA_Open
Definition: tcpdef.h:137
@ TCP_CA_Loss
Definition: tcpdef.h:145
@ TCP_CA_CWR
Definition: tcpdef.h:141
@ TCP_CA_Disorder
Definition: tcpdef.h:139
@ TCP_CA_Recovery
Definition: tcpdef.h:143
@ TCP_FLAG_RST
Definition: tcpdef.h:109
@ TCP_DATA_OFFSET
Definition: tcpdef.h:113
@ TCP_FLAG_FIN
Definition: tcpdef.h:111
@ TCP_FLAG_PSH
Definition: tcpdef.h:108
@ TCP_FLAG_CWR
Definition: tcpdef.h:104
@ TCP_FLAG_ACK
Definition: tcpdef.h:107
@ TCP_RESERVED_BITS
Definition: tcpdef.h:112
@ TCP_FLAG_ECE
Definition: tcpdef.h:105
@ TCP_FLAG_URG
Definition: tcpdef.h:106
@ TCP_FLAG_SYN
Definition: tcpdef.h:110
@ TCPF_CLOSING
Definition: tcpdef.h:88
@ TCPF_FIN_WAIT2
Definition: tcpdef.h:82
@ TCPF_LAST_ACK
Definition: tcpdef.h:86
@ TCPF_ESTABLISHED
Definition: tcpdef.h:78
@ TCPF_SYN_RECV
Definition: tcpdef.h:80
@ TCPF_SYN_SENT
Definition: tcpdef.h:79
@ TCPF_CLOSE
Definition: tcpdef.h:84
@ TCPF_LISTEN
Definition: tcpdef.h:87
@ TCPF_TIME_WAIT
Definition: tcpdef.h:83
@ TCPF_FIN_WAIT1
Definition: tcpdef.h:81
@ TCPF_CLOSE_WAIT
Definition: tcpdef.h:85
__u32 words[5]
Definition: tcpdef.h:98
struct tcphdr hdr
Definition: tcpdef.h:97