NET_ADAPTER_RX_CAPABILITIES_INIT_SYSTEM_MANAGED function

The NET_ADAPTER_RX_CAPABILITIES_INIT_SYSTEM_MANAGED method initializes a NET_ADAPTER_RX_CAPABILITIES structure for a net adapter that would like to specify operating system-managed receive buffer allocation and attachment, but not the use of DMA memory mapping.

Syntax

void NET_ADAPTER_RX_CAPABILITIES_INIT_SYSTEM_MANAGED(
  NET_ADAPTER_RX_CAPABILITIES *RxCapabilities,
  SIZE_T                      MaximumFrameSize,
  SIZE_T                      MaximumNumberOfQueues
);

Parameters

RxCapabilities

A pointer to a driver-allocated NET_ADAPTER_RX_CAPABILITIES structure.

MaximumFrameSize

MaximumNumberOfQueues

The maximum number of receive queues that the adapter supports.

Return value

None

Remarks

This method is one of three possible methods to call in order to initialize a NET_ADAPTER_RX_CAPABILITIES structure. Which one the client driver should call depends on how it would like to allocate receive buffers and if it would like to use DMA.

The client driver must call NET_ADAPTER_RX_CAPABILITIES_INIT_SYSTEM_MANAGED to initialize its NET_ADAPTER_RX_CAPABILITIES structure if it would like the operating system to perform receive buffer allocation and attachment, but does not require DMA memory mapping. By calling this method, the Rx capabilities structure's AllocationMode member is set to NetRxFragmentBufferAllocationModeSystem and the AttachmentMode member is set to NetRxFragmentBufferAttachmentModeSystem. Because the driver does not specify DMA capabilities in this case, this method also sets the MappingRequirement member to NetMemoryMappingRequirementNone.

Requirements

   
Target Platform Universal
Minimum KMDF version 1.25
Header netadapter.h (include netadaptercx.h)

See also

NET_ADAPTER_RX_CAPABILITIES

NET_ADAPTER_RX_CAPABILITIES_INIT_DRIVER_MANAGED

NET_ADAPTER_RX_CAPABILITIES_INIT_SYSTEM_MANAGED_DMA