EVT_WDF_IO_WDM_IRP_FOR_FORWARD_PROGRESS - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// wdfio.h
EVT_WDF_IO_WDM_IRP_FOR_FORWARD_PROGRESS EvtWdfIoWdmIrpForForwardProgress;
WDF_IO_FORWARD_PROGRESS_ACTION EvtWdfIoWdmIrpForForwardProgress(
[in] WDFQUEUE Queue,
[in] PIRP Irp
)
{...}
View the official Windows Driver Kit DDI referenceNo description available.
[Applies to KMDF only]
A driver's EvtIoWdmIrpForForwardProgress callback function examines an I/O request packet (IRP) and determines whether to use a reserved request object to process the I/O request or to fail the I/O request.
Queue [in]A handle to an I/O queue object.
Irp [in]A pointer to an IRP structure.
The EvtIoWdmIrpForForwardProgress callback function must return a WDF_IO_FORWARD_PROGRESS_ACTION-typed value.
A driver can register an EvtIoWdmIrpForForwardProgress callback function when it calls WdfIoQueueAssignForwardProgressPolicy.
If your driver registers an EvtIoWdmIrpForForwardProgress callback function, the framework calls the function if all of the following conditions exist:
The framework passes the IRP to the EvtIoWdmIrpForForwardProgress callback function. The callback function must examine the IRP and determine whether the framework should use one of its reserved request objects for the IRP or (if the IRP is not important when the computer's available memory is low) fail the I/O request without delivering it to the driver. The callback function's return value specifies the action that the framework should take.
For more information about the EvtIoWdmIrpForForwardProgress callback function, see Guaranteeing Forward Progress of I/O Operations.
This callback function can be called at IRQL <= DISPATCH_LEVEL. If the IRQL is PASSIVE_LEVEL, the framework calls the callback function within a critical region.
EvtIoAllocateResourcesForReservedRequest