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NdisMReadDmaCounter function (ndis.h)

  • Article

The NdisMReadDmaCounter function returns the current value of the system DMA controller's counter.

Syntax

ULONG NdisMReadDmaCounter(
  [in] NDIS_HANDLE MiniportDmaHandle
);

Parameters

[in] MiniportDmaHandle

The handle returned when the miniport driver called the NdisMRegisterDmaChannel function during initialization.

Return value

NdisMReadDmaCounter returns the number of bytes remaining in the current DMA transfer on the channel used by the NIC.

Remarks

Miniport drivers of devices that use the system DMA controller's auto-initialize mode can call NdisMReadDmaCounter.

Requirements

Requirement Value
Minimum supported client Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisMReadDmaCounter (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisMReadDmaCounter (NDIS 5.1)) in Windows XP.
Target Platform Universal
Header ndis.h (include Ndis.h)
Library Ndis.lib
IRQL <= DISPATCH_LEVEL
DDI compliance rules Irql_Miniport_Driver_Function(ndis)

See also

NdisMRegisterDmaChannel