WdfPdoInitAllowForwardingRequestToParent function (wdfpdo.h)
[Applies to KMDF only]
The WdfPdoInitAllowForwardingRequestToParent method enables a driver's ability to call WdfRequestForwardToParentDeviceIoQueue.
Syntax
void WdfPdoInitAllowForwardingRequestToParent(
[in] PWDFDEVICE_INIT DeviceInit
);
Parameters
[in] DeviceInit
A pointer to a WDFDEVICE_INIT structure.
Return value
None
Remarks
If your driver uses WdfRequestForwardToParentDeviceIoQueue to requeue I/O requests from a child device's I/O queue to a parent device's I/O queue, the driver must call WdfPdoInitAllowForwardingRequestToParent before it calls WdfDeviceCreate to create a physical device object (PDO) for the child device. For more information about calling WdfDeviceCreate, see Creating a Framework Device Object.
For more information about WdfPdoInitAllowForwardingRequestToParent and WdfRequestForwardToParentDeviceIoQueue, see Requeuing I/O Requests.
Examples
The following code example enables a driver's ability to call WdfRequestForwardToParentDeviceIoQueue.
WdfPdoInitAllowForwardingRequestToParent(pDeviceInit);
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Universal |
| Minimum KMDF version | 1.9 |
| Header | wdfpdo.h (include Wdf.h) |
| Library | Wdf01000.sys (see Framework Library Versioning.) |
| IRQL | PASSIVE_LEVEL |
| DDI compliance rules | DriverCreate(kmdf) |