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WDF_MEMORY_DESCRIPTOR_TYPE enumeration (wdfmemory.h)

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[Applies to KMDF and UMDF]

The WDF_MEMORY_DESCRIPTOR_TYPE enumeration identifies the types of memory descriptions that a WDF_MEMORY_DESCRIPTOR structure can specify.

Syntax

typedef enum _WDF_MEMORY_DESCRIPTOR_TYPE {
  WdfMemoryDescriptorTypeInvalid = 0,
  WdfMemoryDescriptorTypeBuffer,
  WdfMemoryDescriptorTypeMdl,
  WdfMemoryDescriptorTypeHandle
} WDF_MEMORY_DESCRIPTOR_TYPE;

Constants

 
WdfMemoryDescriptorTypeInvalid
Value: 0
Reserved for internal use only.
WdfMemoryDescriptorTypeBuffer
The WDF_MEMORY_DESCRIPTOR structure contains a buffer description.
WdfMemoryDescriptorTypeMdl
The WDF_MEMORY_DESCRIPTOR structure contains a memory descriptor list (MDL).
WdfMemoryDescriptorTypeHandle
The WDF_MEMORY_DESCRIPTOR structure contains a handle to a memory object.

Requirements

Requirement Value
Minimum KMDF version 1.0
Minimum UMDF version 2.0
Header wdfmemory.h (include Wdf.h)

See also

WDF_MEMORY_DESCRIPTOR