/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * INET         An implementation of the TCP/IP protocol suite for the LINUX
 *              operating system.  INET is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              Definitions for the TCP protocol sk_state field.
 */
#ifndef _LINUX_TCP_STATES_H
#define _LINUX_TCP_STATES_H

enum {
        TCP_ESTABLISHED = 1,
        TCP_SYN_SENT,
        TCP_SYN_RECV,
        TCP_FIN_WAIT1,
        TCP_FIN_WAIT2,
        TCP_TIME_WAIT,
        TCP_CLOSE,
        TCP_CLOSE_WAIT,
        TCP_LAST_ACK,
        TCP_LISTEN,
        TCP_CLOSING,    /* Now a valid state */
        TCP_NEW_SYN_RECV,
        TCP_BOUND_INACTIVE, /* Pseudo-state for inet_diag */

        TCP_MAX_STATES  /* Leave at the end! */
};

#define TCP_STATE_MASK  0xF

#define TCP_ACTION_FIN  (1 << TCP_CLOSE)

enum {
        TCPF_ESTABLISHED = (1 << TCP_ESTABLISHED),
        TCPF_SYN_SENT    = (1 << TCP_SYN_SENT),
        TCPF_SYN_RECV    = (1 << TCP_SYN_RECV),
        TCPF_FIN_WAIT1   = (1 << TCP_FIN_WAIT1),
        TCPF_FIN_WAIT2   = (1 << TCP_FIN_WAIT2),
        TCPF_TIME_WAIT   = (1 << TCP_TIME_WAIT),
        TCPF_CLOSE       = (1 << TCP_CLOSE),
        TCPF_CLOSE_WAIT  = (1 << TCP_CLOSE_WAIT),
        TCPF_LAST_ACK    = (1 << TCP_LAST_ACK),
        TCPF_LISTEN      = (1 << TCP_LISTEN),
        TCPF_CLOSING     = (1 << TCP_CLOSING),
        TCPF_NEW_SYN_RECV = (1 << TCP_NEW_SYN_RECV),
        TCPF_BOUND_INACTIVE = (1 << TCP_BOUND_INACTIVE),
};

#endif  /* _LINUX_TCP_STATES_H */