// ucxusbdevice.h

typedef struct _USBDEVICE_UPDATE_FLAGS {
  ULONG UpdateDeviceDescriptor : 1;
  ULONG UpdateBosDescriptor : 1;
  ULONG UpdateMaxExitLatency : 1;
  ULONG UpdateIsHub : 1;
  ULONG UpdateAllowIoOnInvalidPipeHandles : 1;
  ULONG Update20HardwareLpmParameters : 1;
  ULONG UpdateRootPortResumeTime : 1;
  ULONG UpdateTunnelState : 1;
  ULONG Reserved : 25;
} USBDEVICE_UPDATE_FLAGS;
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Windows Driver Kit DDI reference (ns-ucxusbdevice-_usbdevice_update_flags)

_USBDEVICE_UPDATE_FLAGS structure

Description

Contains request flags set by UCX that is passed in the USBDEVICE_UPDATE structure when UCX invokes the client driver's EVT_UCX_USBDEVICE_UPDATE callback function.

Members

`UpdateDeviceDescriptor`

If set, indicates a request to update the USB device descriptor.

`UpdateBosDescriptor`

If set, indicates a request to update the USB BOS descriptor.

`UpdateMaxExitLatency`

If set, indicates a request to update the maximum exit latency.

`UpdateIsHub`

If set, indicates a request to determine of the device is a hub.

`UpdateAllowIoOnInvalidPipeHandles`

If set, indicates the USB device or hub has been updated to allow I/O with invalid pipe handles.

`Update20HardwareLpmParameters`

If set, indicates a request to update the 2.0 LPM state.

`UpdateRootPortResumeTime`

If set, indicates a request to update the root port resume time.

`UpdateTunnelState`

If set, indicates a request to update the USB tunnel state.

`Reserved`

Do not use.

USBDEVICE_UPDATE_FLAGS - NtDoc