linux/include/net/tcp_states.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 sk_state field.
   7 *
   8 *              This program is free software; you can redistribute it and/or
   9 *              modify it under the terms of the GNU General Public License
  10 *              as published by the Free Software Foundation; either version
  11 *              2 of the License, or (at your option) any later version.
  12 */
  13#ifndef _LINUX_TCP_STATES_H
  14#define _LINUX_TCP_STATES_H
  15
  16enum {
  17        TCP_ESTABLISHED = 1,
  18        TCP_SYN_SENT,
  19        TCP_SYN_RECV,
  20        TCP_FIN_WAIT1,
  21        TCP_FIN_WAIT2,
  22        TCP_TIME_WAIT,
  23        TCP_CLOSE,
  24        TCP_CLOSE_WAIT,
  25        TCP_LAST_ACK,
  26        TCP_LISTEN,
  27        TCP_CLOSING,    /* Now a valid state */
  28
  29        TCP_MAX_STATES  /* Leave at the end! */
  30};
  31
  32#define TCP_STATE_MASK  0xF
  33
  34#define TCP_ACTION_FIN  (1 << 7)
  35
  36enum {
  37        TCPF_ESTABLISHED = (1 << 1),
  38        TCPF_SYN_SENT    = (1 << 2),
  39        TCPF_SYN_RECV    = (1 << 3),
  40        TCPF_FIN_WAIT1   = (1 << 4),
  41        TCPF_FIN_WAIT2   = (1 << 5),
  42        TCPF_TIME_WAIT   = (1 << 6),
  43        TCPF_CLOSE       = (1 << 7),
  44        TCPF_CLOSE_WAIT  = (1 << 8),
  45        TCPF_LAST_ACK    = (1 << 9),
  46        TCPF_LISTEN      = (1 << 10),
  47        TCPF_CLOSING     = (1 << 11) 
  48};
  49
  50#endif  /* _LINUX_TCP_STATES_H */
  51
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