EVT_UDECX_USB_ENDPOINT_START - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// udecxusbendpoint.h
EVT_UDECX_USB_ENDPOINT_START EvtUdecxUsbEndpointStart;
VOID EvtUdecxUsbEndpointStart(
[in] UDECXUSBENDPOINT UdecxUsbEndpoint
)
{...}
View the official Windows Driver Kit DDI referenceNo description available.
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.
UdecxUsbEndpoint [in]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.
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.
Architecture: USB Device Emulation (UDE)