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WDF_DISPATCH_IRP_TO_IO_QUEUE_FLAGS enumeration (wdfdevice.h)

[Applies to KMDF only]

The WDF_DISPATCH_IRP_TO_IO_QUEUE_FLAGS enumeration type defines flags that the driver can specify when it calls WdfDeviceWdmDispatchIrpToIoQueue.

Syntax

typedef enum _WDF_DISPATCH_IRP_TO_IO_QUEUE_FLAGS {
  WDF_DISPATCH_IRP_TO_IO_QUEUE_NO_FLAGS = 0x00000000,
  WDF_DISPATCH_IRP_TO_IO_QUEUE_INVOKE_INCALLERCTX_CALLBACK = 0x00000001,
  WDF_DISPATCH_IRP_TO_IO_QUEUE_PREPROCESSED_IRP = 0x00000002
} WDF_DISPATCH_IRP_TO_IO_QUEUE_FLAGS;

Constants

 
WDF_DISPATCH_IRP_TO_IO_QUEUE_NO_FLAGS
Value: 0x00000000
No flags are set.
WDF_DISPATCH_IRP_TO_IO_QUEUE_INVOKE_INCALLERCTX_CALLBACK
Value: 0x00000001
Specifies that the framework should call the EvtIoInCallerContext callback function before inserting the request into the queue.
WDF_DISPATCH_IRP_TO_IO_QUEUE_PREPROCESSED_IRP
Value: 0x00000002
Specifies that the IRP was preprocessed by the driver's EvtDeviceWdmIrpPreprocess callback function. Accordingly, the framework adjusts the IRP's stack ___location to the next entry before inserting it into the queue.

Remarks

For more information about specifying queues for IRPs as they arrive, see Dispatching IRPs to I/O Queues.

Requirements

Requirement Value
Minimum KMDF version 1.11
Header wdfdevice.h (include Wdf.h)

See also

EvtDeviceWdmIrpPreprocess

WdfDeviceWdmDispatchIrpToIoQueue