// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

//

#ifndef __PPPBASE_INL__

#define __PPPBASE_INL__

#include <networking/ppplcp.h>

/** @file

@internalComponent */

//

// PPP Link Frame Checksum

//

// 16 bit CRC

inline TPppFcs16::TPppFcs16()

	{

	Init();

	}

/**

Returns the current CRC value.

@return CRC-16

*/	

inline TUint16 TPppFcs16::Fcs() const

	{

	return (TUint16)~iFcs;

	}

/**

Sets the CRC value to the initial state before calculation.

*/

inline void TPppFcs16::Init()

	{

	iFcs = (TUint16)KPppInitFcs16;

	}

/**

Determines if the calculated CRC is valid.

@return ETrue if the calculated CRC matches the expected value

*/

inline TBool TPppFcs16::IsGood() const

	{

	return iFcs==KPppGoodFcs16;

	}

/**

Incrementally calculates the CRC for the next message byte.

@param aByte Message byte

*/

inline void TPppFcs16::CalcByte(TUint8 aByte)

	{

	iFcs = (TUint16)((iFcs >> 8) ^ FcsTable[(iFcs ^ aByte) & 0xff]);

	}

// 32 bit CRC

inline TPppFcs32::TPppFcs32()

	{

	Init();

	}

/**

Returns the current CRC value.

@return CRC-32

*/	

inline TUint32 TPppFcs32::Fcs() const

	{

	return (TUint32)~iFcs;

	}

/**

Sets the CRC value to the initial state before calculation.

*/

inline void TPppFcs32::Init()

	{

	iFcs = (TUint32)KPppInitFcs32;

	}

/**

Determines if the calculated CRC is valid.

@return ETrue if the calculated CRC matches the expected value

*/

inline TBool TPppFcs32::IsGood() const

	{

	return iFcs==KPppGoodFcs32;

	}

/**

Incrementally calculates the CRC for the next message byte.

@param aByte Message byte

*/

inline void TPppFcs32::CalcByte(TUint8 aByte)

	{

	iFcs = (((iFcs) >> 8) ^ FcsTable[((iFcs) ^ aByte) & 0xff]);

	}

//

// PPP Packet Receiver

//

inline TInt MPppRecvr::SendFrame(RMBufChain& aPacket)

	{ return iPppLcp->PppLink()->Send(aPacket, iPppId); }

inline void MPppRecvr::SetId(TUint aPppId)

	{ iPppId  = aPppId; }

inline void MPppRecvr::SetPhase(TPppPhase aPhase)

	{ iActivePhase  = aPhase; }

//

// PPP Link Protocol Support

//

inline void CPppLinkBase::NotifyLinkUp()

	{ iPppLcp->LinkLayerUp(); }

inline void CPppLinkBase::NotifyLinkDown(TInt aReason)

	{ iPppLcp->LinkLayerDown(aReason); }

inline void CPppLinkBase::DeliverToLcp(RMBufChain& aPacket)

	{ iPppLcp->LinkRecv(aPacket); }

inline void CPppLinkBase::NewCompressor(const CPppCompressor* aCompressor)

	{ 

	  iPppCompressor = (CPppCompressor*)aCompressor;

	}

inline void CPppLinkBase::NewDeCompressor(const CPppDeCompressor* aDeCompressor)

	{ 

		iPppDecompressor = (CPppDeCompressor*)aDeCompressor; 

	}

//

// PPP Options Support

//

inline RPppOption& RPppOption::Cast(RMBufChain& aChain)

	{ return *((RPppOption*)&aChain); }

inline const RPppOption& RPppOption::Cast(const RMBufChain& aChain)

	{ return *((const RPppOption*)&aChain); }

inline const RPppOption& RPppOption::operator=(const RMBufChain& aChain)

	{ iNext = (RMBuf*)aChain.First(); return *this; }

//

// PPP FSM

//

inline TBool MPppFsm::FsmIsThisLayerOpen()

	{ return iState==EPppFsmOpened; }

#endif