NdisMReadDmaCounter function (ndis.h)
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) |