/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2005,2006 INRIA

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as 

 * published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#ifndef MAC_HIGH_NQAP_H

#define MAC_HIGH_NQAP_H

#include <stdint.h>

#include "ns3/mac48-address.h"

#include "ns3/callback.h"

#include "ns3/packet.h"

#include "ns3/nstime.h"

#include "supported-rates.h"

#include "wifi-remote-station-manager.h"

#include "wifi-mac.h"

namespace ns3 {

class WifiMacHeader;

class DcaTxop;

class WifiPhy;

class DcfManager;

class MacRxMiddle;

class MacLow;

/**

 * \brief non-QoS AP state machine

 *

 * Handle association, dis-association and authentication,

 * of STAs within an IBSS.

 * This class uses two output queues, each of which is server by

 * a single DCF

 *   - the highest priority DCF serves the queue which contains

 *     only beacons.

 *   - the lowest priority DCF serves the queue which contains all

 *     other frames, including user data frames.

 */

class NqapWifiMac : public WifiMac

{

public:

  static TypeId GetTypeId (void);

  NqapWifiMac ();

  ~NqapWifiMac ();

  // inherited from WifiMac.

  virtual void SetSlot (Time slotTime);

  virtual void SetSifs (Time sifs);

  virtual void SetEifsNoDifs (Time eifsNoDifs);

  virtual void SetAckTimeout (Time ackTimeout);

  virtual void SetCtsTimeout (Time ctsTimeout);

  virtual Time GetSlot (void) const;

  virtual Time GetSifs (void) const;

  virtual Time GetEifsNoDifs (void) const;

  virtual Time GetAckTimeout (void) const;

  virtual Time GetCtsTimeout (void) const;

  virtual void SetWifiPhy (Ptr<WifiPhy> phy);

  virtual void SetWifiRemoteStationManager (Ptr<WifiRemoteStationManager> stationManager);

  virtual void Enqueue (Ptr<const Packet> packet, Mac48Address to, Mac48Address from);

  virtual void SetForwardUpCallback (Callback<void,Ptr<Packet>, const Mac48Address &> upCallback);

  virtual void SetLinkUpCallback (Callback<void> linkUp);

  virtual void SetLinkDownCallback (Callback<void> linkDown);

  virtual Mac48Address GetAddress (void) const;

  virtual Ssid GetSsid (void) const;

  virtual Mac48Address GetBssid (void) const;

  virtual void SetAddress (Mac48Address address);

  virtual void SetSsid (Ssid ssid);

  /**

   * \param interval the interval between two beacon transmissions.

   */

  void SetBeaconInterval (Time interval);

  /**

   * \returns the interval between two beacon transmissions.

   */

  Time GetBeaconInterval (void) const;

  /**

   * Start beacon transmission immediately.

   */

  void StartBeaconing (void);

private:

  void Receive (Ptr<Packet> packet, WifiMacHeader const *hdr);

  void ForwardUp (Ptr<Packet> packet, Mac48Address from);

  void ForwardDown (Ptr<const Packet> packet, Mac48Address from, Mac48Address to);

  void TxOk (WifiMacHeader const &hdr);

  void TxFailed (WifiMacHeader const &hdr);

  void SendProbeResp (Mac48Address to);

  void SendAssocResp (Mac48Address to, bool success);

  void SendOneBeacon (void);

  SupportedRates GetSupportedRates (void) const;

  void SetBeaconGeneration (bool enable);

  bool GetBeaconGeneration (void) const;

  virtual void DoDispose (void);

  NqapWifiMac (const NqapWifiMac & ctor_arg);

  Ptr<DcaTxop> m_dca;

  Ptr<DcaTxop> m_beaconDca;

  Ptr<WifiRemoteStationManager> m_stationManager;

  Ptr<WifiPhy> m_phy;

  Callback<void, Ptr<Packet>,const Mac48Address &> m_upCallback;

  Time m_beaconInterval;

  DcfManager *m_dcfManager;

  MacRxMiddle *m_rxMiddle;

  Ptr<MacLow> m_low;

  Mac48Address m_address;

  Ssid m_ssid;

  EventId m_beaconEvent;

  Time m_eifsNoDifs;

};

} // namespace ns3

#endif /* MAC_HIGH_NQAP_H */