IOCTL_USB_NOTIFY_ON_TRANSPORT_CHARACTERISTICS_CHANGE IOCTL

Description

This request notifies the caller of change in transport characteristics.

Parameters

Major code

Input buffer

Input buffer length

Output buffer

Output buffer length

Input/output buffer

The AssociatedIrp.SystemBuffer member is a pointer to a caller-allocated USB_TRANSPORT_CHARACTERISTICS_CHANGE_NOTIFICATION structure. On input the caller passes the registration handle retrieved in the previous IOCTL_USB_REGISTER_FOR_TRANSPORT_CHARACTERISTICS_CHANGE request. On output, the structure is filled with the latest information about the type of information for which the caller.

Input/output buffer length

The size of the USB_TRANSPORT_CHARACTERISTICS_CHANGE_NOTIFICATION structure.

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status indicates the appropriate error condition as a NTSTATUS code.

Remarks

This request is kept pending by the USB driver stack until a there is a change in the transport characteristics for which the caller registered. On completion of this request, the USB driver stack returns the information in the output buffer.

See also

Creating IOCTL Requests in Drivers

USB client drivers for Media-Agnostic (MA-USB)

WdfIoTargetSendInternalIoctlOthersSynchronously

WdfIoTargetSendInternalIoctlSynchronously

WdfIoTargetSendIoctlSynchronously