/*

* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Implementation of the WlanActiveModePowerModeMgr class

*

*/

/*

* %version: 13 %

*/

#include "config.h"

#include "umacactivemodepowermodemgr.h"

#include "UmacContextImpl.h"

// Default Rx/Tx frame count threshold for considering change to Light PS mode.

// This value is used if another value hasn't been provided

const TUint KDefaultToLightPsFrameThreshold = 1;

// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------------------------

// 

// ---------------------------------------------------------------------------

//

WlanActiveModePowerModeMgr::WlanActiveModePowerModeMgr() : 

    iToLightPsFrameCount( 0 ),

    iToLightPsFrameThreshold( KDefaultToLightPsFrameThreshold )

    {

    }   

// ---------------------------------------------------------------------------

// 

// ---------------------------------------------------------------------------

//

WlanActiveModePowerModeMgr::~WlanActiveModePowerModeMgr() 

    {

    }

// ---------------------------------------------------------------------------

// 

// ---------------------------------------------------------------------------

//

TPowerMgmtModeChange WlanActiveModePowerModeMgr::OnFrameTx( 

    WlanContextImpl& /*aCtxImpl*/, 

    WHA::TQueueId /*aQueueId*/,

    TUint16 aEtherType,

    TBool aIgnoreThisFrame )

    {

    if ( aEtherType == KEapolType ||

         aEtherType == KWaiType )

        {

        OsTracePrint( KPwrStateTransition, (TUint8*)

            ("UMAC: WlanActiveModePowerModeMgr::OnFrameTx: count this frame; eapol or WAI") );

        ++iToLightPsFrameCount; 

        }

    else

        {

        if ( aIgnoreThisFrame )

            { 

            // for these frames we don't increment the Tx counter

            OsTracePrint( KPwrStateTransition, (TUint8*)

                ("UMAC: WlanActiveModePowerModeMgr::OnFrameTx: do not count this frame") );

            }

        else

            {

            OsTracePrint( KPwrStateTransition, (TUint8*)

                ("UMAC: WlanActiveModePowerModeMgr::OnFrameTx: count this frame") );

            ++iToLightPsFrameCount;

            }

        }

    return ENoChange;

    }

// ---------------------------------------------------------------------------

// 

// ---------------------------------------------------------------------------

//

TPowerMgmtModeChange WlanActiveModePowerModeMgr::OnFrameRx(

    WlanContextImpl& aCtxImpl,

    WHA::TQueueId aAccessCategory,

    TUint16 aEtherType,

    TBool aIgnoreThisFrame,

    TUint aPayloadLength,

    TDaType aDaType )

    { 

    if ( CountThisFrame( 

            aCtxImpl, 

            aAccessCategory,

            aEtherType,

            aIgnoreThisFrame, 

            aPayloadLength, 

            iUapsdRxFrameLengthThreshold,

            aDaType ) ) 

        {

        ++iToLightPsFrameCount; 

        }

    return ENoChange;

    }

// ---------------------------------------------------------------------------

// 

// ---------------------------------------------------------------------------

//

TBool WlanActiveModePowerModeMgr::OnActiveToLightPsTimerTimeout()

    {

    OsTracePrint( KPwrStateTransition, (TUint8*)

        ("UMAC: WlanActiveModePowerModeMgr::OnActiveToLightPsTimerTimeout: ToLightPsFrameCount: %d"),

        iToLightPsFrameCount );

    if ( iToLightPsFrameCount < iToLightPsFrameThreshold )

        {

        return ETrue;

        }

    else

        {

        iToLightPsFrameCount = 0;

        return EFalse;

        }

    }

// ---------------------------------------------------------------------------

// 

// ---------------------------------------------------------------------------

//

void WlanActiveModePowerModeMgr::DoReset()

    {

    OsTracePrint( KPwrStateTransition, (TUint8*)

        ("UMAC: WlanActiveModePowerModeMgr::DoReset()") );

    iToLightPsFrameCount = 0;

    }