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

/*

 * Copyright (c) 2005 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 ADHOC_WIFI_MAC_H

#define ADHOC_WIFI_MAC_H

#include "ns3/mac48-address.h"

#include "ns3/callback.h"

#include "ns3/packet.h"

#include "wifi-mac.h"

namespace ns3 {

class DcaTxop;

class Packet;

class WifiMacHeader;

class WifiPhy;

class DcfManager;

class MacLow;

class MacRxMiddle;

/**

 * \brief the Adhoc state machine

 *

 * For now, this class is really empty but it should contain

 * the code for the distributed generation of beacons in an adhoc 

 * network.

 */

class AdhocWifiMac : public WifiMac 

{

public:

  typedef Callback<void, Ptr<Packet>, const Mac48Address &> ForwardCallback;

  static TypeId GetTypeId (void);

  AdhocWifiMac ();

  ~AdhocWifiMac ();

  // all inherited from WifiMac base class.

  virtual void SetSlot (Time slotTime);

  virtual void SetSifs (Time sifs);

  virtual void SetEifsNoDifs (Time eifsNoDifs);

  virtual Time GetSlot (void) const;

  virtual Time GetSifs (void) const;

  virtual Time GetEifsNoDifs (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);

private:

  // inherited from Object base class.

  virtual void DoDispose (void);

  /* invoked by the MacLows. */

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

  AdhocWifiMac (const AdhocWifiMac & ctor_arg);

  Ptr<DcaTxop> m_dca;

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

  Ptr<WifiRemoteStationManager> m_stationManager;

  Ptr<WifiPhy> m_phy;

  DcfManager *m_dcfManager;

  MacRxMiddle *m_rxMiddle;

  Ptr<MacLow> m_low;

  Ssid m_ssid;

  Time m_slot;

  Time m_sifs;

  Time m_eifsNoDifs;

};

} // namespace ns3

#endif /* ADHOC_WIFI_MAC_H */