1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 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. 8 */ 9 #ifndef _LINUX_TCP_STATES_H 10 #define _LINUX_TCP_STATES_H 11 12 enum { 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 */ 24 TCP_NEW_SYN_RECV, 25 26 TCP_MAX_STATES /* Leave at the end! */ 27 }; 28 29 #define TCP_STATE_MASK 0xF 30 31 #define TCP_ACTION_FIN (1 << TCP_CLOSE) 32 33 enum { 34 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), 46 }; 47 48 #endif /* _LINUX_TCP_STATES_H */ 49