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

/*

 * Copyright (c) 2004,2005,2006 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>

 */

#include "aarf-mac-stations.h"

#define Min(a,b) ((a<b)?a:b)

#define Max(a,b) ((a>b)?a:b)

namespace ns3 {

AarfMacStations::AarfMacStations (WifiMode defaultTxMode, 

                                  uint32_t minTimerThreshold,

                                  uint32_t minSuccessThreshold,

                                  double successK,

                                  uint32_t maxSuccessThreshold,

                                  double timerK)

  : ArfMacStations (defaultTxMode, 

                    minTimerThreshold,

                    minSuccessThreshold),

    m_minTimerThreshold (minTimerThreshold),

    m_minSuccessThreshold (minSuccessThreshold),

    m_successK (successK),

    m_maxSuccessThreshold (maxSuccessThreshold),

    m_timerK (timerK)

{}

AarfMacStations::~AarfMacStations ()

{}

MacStation *

AarfMacStations::CreateStation (void)

{

  return new AarfMacStation (this, m_minTimerThreshold,

                             m_minSuccessThreshold,

                             m_successK,

                             m_maxSuccessThreshold,

                             m_timerK);

}

AarfMacStation::AarfMacStation (AarfMacStations *stations,

                                uint32_t minTimerThreshold,

                                uint32_t minSuccessThreshold,

                                double successK,

                                uint32_t maxSuccessThreshold,

                                double timerK)

  : ArfMacStation (stations, minTimerThreshold, minSuccessThreshold),

    m_successK (successK),

    m_maxSuccessThreshold (maxSuccessThreshold),

    m_timerK (timerK)

{}

AarfMacStation::~AarfMacStation ()

{}

void 

AarfMacStation::ReportRecoveryFailure (void)

{

  SetSuccessThreshold ((int)(Min (GetSuccessThreshold () * m_successK,

                                  m_maxSuccessThreshold)));

  SetTimerTimeout ((int)(Max (GetMinTimerTimeout (),

                              GetSuccessThreshold () * m_timerK)));

}

void 

AarfMacStation::ReportFailure (void)

{

  SetTimerTimeout (GetMinTimerTimeout ());

  SetSuccessThreshold (GetMinSuccessThreshold ());

}

} // namespace ns3