NET_ADAPTER_DMA_CAPABILITIES - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// netadapter.h
typedef struct _NET_ADAPTER_DMA_CAPABILITIES {
ULONG Size;
WDFDMAENABLER DmaEnabler;
PHYSICAL_ADDRESS MaximumPhysicalAddress;
WDF_TRI_STATE CacheEnabled;
NODE_REQUIREMENT PreferredNode;
} NET_ADAPTER_DMA_CAPABILITIES;
View the official Windows Driver Kit DDI referenceNo description available.
The NET_ADAPTER_DMA_CAPABILITIES structure describes the DMA capabilities of a net adapter.
SizeThe size of this structure, in bytes.
DmaEnablerThe DMA enabler object used by the client driver to map and allocate memory.
[!IMPORTANT] When configuring this object with the WDF_DMA_ENABLER_CONFIG structure, client drivers must set the WdmDmaVersionOverride member to 3 to specify DMA version 3.
MaximumPhysicalAddressThe maximum physical address to use when allocating memory buffers. Set this member to 0 to indicate that there is no maximum address.
CacheEnabledA WDF_TRI_STATE value that defines if the memory allocated should have cache enabled or not. If this member is set to WdfDefault, cache will be enabled only if the device is cache coherent.
PreferredNodeThe preferred NUMA node to use when allocating memory. If this member is set to MM_ANY_NODE_OK, NetAdapterCx will automatically determine the best node to use.
Call NET_ADAPTER_DMA_CAPABILITIES_INIT to initialize this structure.
This structure can be used either in the receive path, as a member of the NET_ADAPTER_RX_CAPABILITIES structure, or in the transmit path as a member of the NET_ADAPTER_TX_CAPABILITIES structure.
NET_ADAPTER_DMA_CAPABILITIES_INIT