1 /**

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 

    19 

    20 /**

    21  @file SLIP.H

    22  @internalComponent

    23 */

    24 

    25 #if !defined(__SLIP_H__)

    26 #define __SLIP_H__

    27 

    28 #include <es_mbuf.h>

    29 #include <comms-infras/nifif.h>

    30 #include <nifutl.h>

    31 

    32 ////////////////////////////////////////////////////////////////////////////////

    33 

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

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

    36 const TUint KSlipEscCh = 0333;

    37 const TUint KSlipEscEndCh = 0334;

    38 const TUint KSlipEscEscCh = 0335;

    39 const TUint KSlipWriterPrority = 20;

    40 const TUint KSlipReaderPrority = 10;

    41 

    42 ////////////////////////////////////////////////////////////////////////////////

    43 

    44 enum TSlipPanic {	PanicSlipAssert1,

    45 					PanicSlipAssert2,

    46 					PanicSlipAssert3,

    47 					PanicSlipAssert4,

    48 					PanicSlipAssert5,

    49 					PanicSlipAssert6,

    50 					PanicSlipAssert7,

    51 					PanicSlipAssert8

    52 

    53 				};

    54 void SlipPanic(TSlipPanic aPanic);

    55 

    56 enum TSlipFault {};

    57 

    58 void SlipFault(TSlipFault aFault);

    59 

    60 ////////////////////////////////////////////////////////////////////////////////

    61 // SLIP Protocol Factory

    62 ////////////////////////////////////////////////////////////////////////////////

    63 

    64 NONSHARABLE_CLASS(CSlipIfFactory) : public CNifIfFactory

    65 /**

    66 @internalComponent

    67 */

    68 	{

    69 protected:

    70 	virtual void InstallL();

    71 	virtual CNifIfBase* NewInterfaceL(const TDesC& aName);

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

    73 	};

    74 

    75 ////////////////////////////////////////////////////////////////////////////////

    76 // Slip Interface

    77 ////////////////////////////////////////////////////////////////////////////////

    78 

    79 const TUint KSlipBufSize = 1024;

    80 

    81 class TSlipBuf : public TBuf8<KSlipBufSize>

    82 /**

    83 @internalComponent

    84 */

    85 	{

    86 public:

    87 #ifndef _DEBUG

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

    89 		{ return iBuf[aIndex]; }

    90 	inline TUint8 &operator[](TInt aIndex)

    91 		{ return iBuf[aIndex]; }

    92 #endif

    93 	};

    94 

    95 const TUint KSlipIsUp = 0x01;

    96 const TUint KSlipSendBusy = 0x02;

    97 const TUint KSlipSendInUse = 0x04;

    98 const TUint KSlipRecvEscPend = 0x08;

    99 const TUint KSlipCommConfigOk = 0x10;

   100 

   101 NONSHARABLE_CLASS(CSlip) : public CNifIfLink, public MComm

   102 /**

   103 @internalComponent

   104 */

   105 	{

   106 public:

   107 	CSlip(CNifIfFactory& aFactory);

   108 	~CSlip();

   109 

   110 	virtual void BindL(TAny *aId);

   111 	virtual TInt State();

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

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

   114 	virtual TInt Start();

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

   116 	virtual CNifIfBase* GetBinderL(const TDesC& aName);

   117 	virtual void Info(TNifIfInfo& aInfo) const;

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

   119 	virtual void Restart(CNifIfBase* aIf);

   120 	static void FillInInfo(TNifIfInfo& aInfo);

   121 	//

   122 	void CommReadComplete(TInt aStatus);

   123 	void CommWriteComplete(TInt aStatus);

   124 	

   125 	// Slip Family 

   126 	static void FillinInfo(TServerProtocolDesc &aEntry);

   127 private:

   128 	void DoRecv();

   129 	void DoSend();

   130 	void LinkDown(TInt aReason);

   131 	TInt PacketModeOn();

   132 	TInt PacketModeOff();

   133 	TInt SpeedMetric();

   134 private:

   135 	TCommConfig iOrigConfig;

   136 	TUint iFlags;

   137 	CProtocolBase* iIpProtocol;

   138 	

   139 	/** Sender */

   140 	CAsyncCallBack* iSendCallBack;

   141 

   142 	RMBufPktQ iSendPktQ;

   143 	RMBufChain iSendPkt;

   144 	RMBuf* iSendMBuf;

   145 	TUint8* iSendMPtr;

   146 	TSlipBuf iSendBuf;

   147 

   148 	TInt iSendMBufs;	///< Send current level 

   149 	TInt iSendLoWat;	///< Send flow on level 

   150 	TInt iSendHiWat;	///< Send flow off level 

   151 	TSlipBuf iRecvBuf;	///< Receiver 

   152 

   153 	TInt iRecvLen;

   154 	RMBuf* iRecvMBuf;

   155 	TUint8* iRecvMPtr;

   156 	RMBufQ iRecvQ;

   157 	};

   158 

   159 #endif