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RFrameXferBlockBase Class Reference

class RFrameXferBlockBase

Ethernet frame transfer context block base class between user and kernel space

Public Member Functions
TBool	GetNextRxDataBuffer ( TDataBuffer *&)
void	SetRxDataChunkField ( TLinAddr )

Private Member Functions
	RFrameXferBlockBase ()
	RFrameXferBlockBase (const RFrameXferBlockBase &)
RFrameXferBlockBase &	operator= (const RFrameXferBlockBase &)

Protected Attributes
TUint32	iCurrentRxBuffer
TUint32	iFirstRxBufferToFree
TUint32	iNumOfCompleted
TUint32	iRxCompletedBuffers
TUint8 *	iRxDataChunk
TUint32	iTxOffset

Constructor & Destructor Documentation

RFrameXferBlockBase()

RFrameXferBlockBase

(

)

[private]

Prohibit default constructor

RFrameXferBlockBase(const RFrameXferBlockBase &)

RFrameXferBlockBase

(

const RFrameXferBlockBase &

)

[private]

Prohibit copy constructor

Parameters

const RFrameXferBlockBase &

Member Functions Documentation

GetNextRxDataBuffer(TDataBuffer *&)

TBool

GetNextRxDataBuffer

(

TDataBuffer *&

aBuf

)

[inline]

Gets next Rx-data buffer that has data to be read

Since: S60 3.1

Parameters

TDataBuffer *& aBuf

OUT parameter where Rx-data buffers address that is to be read is copied

SetRxDataChunkField(TLinAddr)

void

SetRxDataChunkField

(

TLinAddr

aUserAddr

)

[inline]

Set data chunk address

Note! This method is executed in user mode context by the user mode client interface, i.e. not the client itself!

Since: S60 3.1

Parameters

TLinAddr aUserAddr

user address of the buffer

operator=(const RFrameXferBlockBase &)

RFrameXferBlockBase &

operator=

(

const RFrameXferBlockBase &

)

[private]

Prohibit assigment operator

Parameters

const RFrameXferBlockBase &

Member Data Documentation

TUint32 iCurrentRxBuffer

TUint32

iCurrentRxBuffer

[protected]

index to iRxCompletedBuffers denoting the Rx buffer that is to be extracted next by the user application

TUint32 iFirstRxBufferToFree

TUint32

iFirstRxBufferToFree

[protected]

index of the first Rx buffer in iRxCompletedBuffers array

which the user side client has already handled and which can therefore be freed & re-used AND
which hasn't been freed yet

TUint32 iNumOfCompleted

TUint32

iNumOfCompleted

[protected]

number of Rx-data buffers that were completed by the device driver

TUint32 iRxCompletedBuffers

TUint32

iRxCompletedBuffers

[protected]

array of TDataBuffer offset addresses from the memory pool start address, denoting Rx buffers which are ready to be read

TUint8 * iRxDataChunk

TUint8 *

iRxDataChunk

[protected]

the beginning of the Rx data area in user address space

TUint32 iTxOffset

TUint32

iTxOffset

[protected]

defines a Tx offset for every frame type which can be transmitted