EVT_UDECX_USB_ENDPOINT_START callback function (udecxusbendpoint.h)
The USB device emulation class extension (UdeCx) invokes this callback function to start processing I/O requests on the specified endpoint of the virtual USB device.
Syntax
EVT_UDECX_USB_ENDPOINT_START EvtUdecxUsbEndpointStart;
void EvtUdecxUsbEndpointStart(
[in] UDECXUSBENDPOINT UdecxUsbEndpoint
)
{...}
Parameters
[in] UdecxUsbEndpoint
A handle to a UDE endpoint object that represents the endpoint which can start receiving I/O requests. The client driver retrieved this pointer in the previous call to UdecxUsbEndpointCreate.
Return value
None
Remarks
The client driver registered this callback function in a previous call to UdecxUsbEndpointInitSetCallbacks by supplying a function pointer to its implementation.
After the client driver creates an endpoint, it does not automatically start receiving I/O requests. When UdeCx is ready to forward those request for processing, it invokes the client driver's EVT_UDECX_USB_ENDPOINT_START function and the client driver can begin processing I/O on the endpoint’s queue, and on any queues that receive forwarded I/O for the endpoint. This callback returns the endpoint to a state of processing I/O after an EVT_UDECX_USB_ENDPOINT_PURGE callback has and completed.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10 |
| Minimum supported server | Windows Server 2016 |
| Target Platform | Windows |
| Minimum KMDF version | 1.15 |
| Header | udecxusbendpoint.h (include Udecx.h) |
| IRQL | <=DISPATCH_LEVEL |