Bewerken

Delen via

IOCTL_INTERNAL_USBFN_CONTROL_STATUS_HANDSHAKE_IN IOCTL (usbfnioctl.h)

  • Artikel

The class driver sends this request to send a zero-length control status handshake on endpoint 0 in the IN direction.

Major code

IRP_MJ_INTERNAL_DEVICE_CONTROL

Input buffer

A USBFNPIPEID type value that indicates the pipe ID. The pipe ID of the default control endpoint is 0.

Input buffer length

The size of a USBFNPIPEID type.

Output buffer

NULL.

Output buffer length

NULL.

Status block

If the request is successful, the USB function class extension (UFX) returns STATUS_SUCCESS, or another status value for which NT_SUCCESS(status) equals TRUE. Otherwise it returns a status value for which NT_SUCCESS(status) equals FALSE.

Remarks

This request must be sent after sending the IOCTL_INTERNAL_USBFN_ACTIVATE_USB_BUS request.

UFX forwards this IOCTL request to the transfer queue created for the endpoint by UfxEndpointCreate.

Requirements

Requirement Value
Header usbfnioctl.h