/**

* 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:

*

*/

/**

 @file SLIP.H

 @internalComponent

*/

#if !defined(__SLIP_H__)

#define __SLIP_H__

#include <es_mbuf.h>

#include <comms-infras/nifif.h>

#include <nifutl.h>

#include <es_prot.h>

////////////////////////////////////////////////////////////////////////////////

const TInt KSlipDefaultMtu = 576; ///< default Maximum transmit unit

const TUint KSlipEndCh = 0300;    ///< End of frame

const TUint KSlipEscCh = 0333;

const TUint KSlipEscEndCh = 0334;

const TUint KSlipEscEscCh = 0335;

const TUint KSlipWriterPrority = 20;

const TUint KSlipReaderPrority = 10;

////////////////////////////////////////////////////////////////////////////////

enum TSlipPanic {	PanicSlipAssert1,

					PanicSlipAssert2,

					PanicSlipAssert3,

					PanicSlipAssert4,

					PanicSlipAssert5,

					PanicSlipAssert6,

					PanicSlipAssert7,

					PanicSlipAssert8

				};

void SlipPanic(TSlipPanic aPanic);

enum TSlipFault {};

void SlipFault(TSlipFault aFault);

////////////////////////////////////////////////////////////////////////////////

// SLIP Protocol Factory

////////////////////////////////////////////////////////////////////////////////

NONSHARABLE_CLASS(CSlipIfFactory) : public CNifIfFactory

/**

@internalComponent

*/

	{

protected:

	virtual void InstallL();

	virtual CNifIfBase* NewInterfaceL(const TDesC& aName);

	TInt Info(TNifIfInfo& aInfo, TInt aIndex) const;

	};

////////////////////////////////////////////////////////////////////////////////

// Slip Interface

////////////////////////////////////////////////////////////////////////////////

const TUint KSlipBufSize = 1024;

class TSlipBuf : public TBuf8<KSlipBufSize>

/**

@internalComponent

*/

	{

public:

#ifndef _DEBUG

	inline const TUint8 &operator[](TInt aIndex) const

		{ return iBuf[aIndex]; }

	inline TUint8 &operator[](TInt aIndex)

		{ return iBuf[aIndex]; }

#endif

	};

const TUint KSlipIsUp = 0x01;

const TUint KSlipSendBusy = 0x02;

const TUint KSlipSendInUse = 0x04;

const TUint KSlipRecvEscPend = 0x08;

const TUint KSlipCommConfigOk = 0x10;

NONSHARABLE_CLASS(CSlip) : public CNifIfLink, public MComm

/**

@internalComponent

*/

	{

public:

	CSlip(CNifIfFactory& aFactory);

	~CSlip();

	virtual void BindL(TAny *aId);

	virtual TInt State();

	virtual TInt Control(TUint aLevel,TUint aName,TDes8& aOption, TAny* aSource=0);

	virtual TInt Send(RMBufChain& aPdu, TAny* aSource=0);

	virtual TInt Start();

	virtual void Stop(TInt aReason, MNifIfNotify::TAction aAction);

	virtual CNifIfBase* GetBinderL(const TDesC& aName);

	virtual void Info(TNifIfInfo& aInfo) const;

	virtual TInt Notification(TAgentToNifEventType aEvent, void * aInfo);

	virtual void Restart(CNifIfBase* aIf);

	static void FillInInfo(TNifIfInfo& aInfo);

	//

	void CommReadComplete(TInt aStatus);

	void CommWriteComplete(TInt aStatus);

	// Slip Family 

	static void FillinInfo(TServerProtocolDesc &aEntry);

private:

	void DoRecv();

	void DoSend();

	void LinkDown(TInt aReason);

	TInt PacketModeOn();

	TInt PacketModeOff();

	TInt SpeedMetric();

private:

	TCommConfig iOrigConfig;

	TUint iFlags;

	CProtocolBase* iIpProtocol;

	/** Sender */

	CAsyncCallBack* iSendCallBack;

	RMBufPktQ iSendPktQ;

	RMBufChain iSendPkt;

	RMBuf* iSendMBuf;

	TUint8* iSendMPtr;

	TSlipBuf iSendBuf;

	TInt iSendMBufs;	///< Send current level 

	TInt iSendLoWat;	///< Send flow on level 

	TInt iSendHiWat;	///< Send flow off level 

	TSlipBuf iRecvBuf;	///< Receiver 

	TInt iRecvLen;

	RMBuf* iRecvMBuf;

	TUint8* iRecvMPtr;

	RMBufQ iRecvQ;

	};

#endif