Microsoft Windows CE 3.0  

NdisQueryBuffer

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This function retrieves the size of the range from a buffer descriptor and, optionally, its base virtual address.

VOID
NdisQueryBuffer(
IN PNDIS_BUFFER
Buffer
,
OUT PVOID*
VirtualAddress
OPTIONAL,
OUT PUINT
Length
);

Parameters

Buffer
Pointer to the buffer descriptor.
VirtualAddress
Pointer to a caller-supplied variable in which this function returns the base virtual address of the range described.
Length
Pointer to to a caller-supplied variable in which this function returns the number of bytes in the virtual range.

Remarks

NDIS drivers use this function to retrieve information from the buffer descriptors chained to incoming packets for subsequent transfer operations.

The driver must release any spin lock it is holding before calling this function.

A driver that calls this function runs at IRQL <= DISPATCH_LEVEL.

Requirements

Runs on Versions Defined in Include Link to
Windows CE OS 2.0 and later Ndis.h    
Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

NdisGetFirstBufferFromPacket, NdisMoveFromMappedMemory, NdisMoveMemory, NdisMoveToMappedMemory, NdisQueryBufferOffset, NdisQueryPacket, NdisRawReadPortBufferUchar, NdisRawReadPortBufferUlong, NdisRawReadPortBufferUshort, NdisRawWritePortBufferUchar, NdisRawWritePortBufferUlong, NdisRawWritePortBufferUshort, NdisReleaseSpinLock, NdisUnchainBufferAtBack, NdisUnchainBufferAtFront



 Last updated on Tuesday, July 13, 2004

© 2004 Microsoft Corporation. All rights reserved.