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Thomas Gleixner2874c5f2019-05-27 08:55:01 +02001/* SPDX-License-Identifier: GPL-2.0-or-later */
Arnaldo Carvalho de Meloc752f072005-08-09 20:08:28 -07002/*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * Definitions for the TCP protocol sk_state field.
Arnaldo Carvalho de Meloc752f072005-08-09 20:08:28 -07008 */
9#ifndef _LINUX_TCP_STATES_H
10#define _LINUX_TCP_STATES_H
11
12enum {
13 TCP_ESTABLISHED = 1,
14 TCP_SYN_SENT,
15 TCP_SYN_RECV,
16 TCP_FIN_WAIT1,
17 TCP_FIN_WAIT2,
18 TCP_TIME_WAIT,
19 TCP_CLOSE,
20 TCP_CLOSE_WAIT,
21 TCP_LAST_ACK,
22 TCP_LISTEN,
23 TCP_CLOSING, /* Now a valid state */
Eric Dumazet10feb422015-03-12 16:44:04 -070024 TCP_NEW_SYN_RECV,
Arnaldo Carvalho de Meloc752f072005-08-09 20:08:28 -070025
26 TCP_MAX_STATES /* Leave at the end! */
27};
28
29#define TCP_STATE_MASK 0xF
30
Yafang Shaoa823fed2018-02-20 21:28:31 +080031#define TCP_ACTION_FIN (1 << TCP_CLOSE)
Arnaldo Carvalho de Melo22712812005-12-13 23:25:56 -080032
33enum {
Yafang Shaoa823fed2018-02-20 21:28:31 +080034 TCPF_ESTABLISHED = (1 << TCP_ESTABLISHED),
35 TCPF_SYN_SENT = (1 << TCP_SYN_SENT),
36 TCPF_SYN_RECV = (1 << TCP_SYN_RECV),
37 TCPF_FIN_WAIT1 = (1 << TCP_FIN_WAIT1),
38 TCPF_FIN_WAIT2 = (1 << TCP_FIN_WAIT2),
39 TCPF_TIME_WAIT = (1 << TCP_TIME_WAIT),
40 TCPF_CLOSE = (1 << TCP_CLOSE),
41 TCPF_CLOSE_WAIT = (1 << TCP_CLOSE_WAIT),
42 TCPF_LAST_ACK = (1 << TCP_LAST_ACK),
43 TCPF_LISTEN = (1 << TCP_LISTEN),
44 TCPF_CLOSING = (1 << TCP_CLOSING),
45 TCPF_NEW_SYN_RECV = (1 << TCP_NEW_SYN_RECV),
Arnaldo Carvalho de Melo22712812005-12-13 23:25:56 -080046};
47
Arnaldo Carvalho de Meloc752f072005-08-09 20:08:28 -070048#endif /* _LINUX_TCP_STATES_H */