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WDF_USB_REQUEST_TYPE enumeration (wdfusb.h)

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[Applies to KMDF and UMDF]

The WDF_USB_REQUEST_TYPE enumeration identifies the types of USB requests that a framework-based driver can send to a USB I/O target.

Syntax

typedef enum _WDF_USB_REQUEST_TYPE {
  WdfUsbRequestTypeInvalid = 0,
  WdfUsbRequestTypeNoFormat,
  WdfUsbRequestTypeDeviceString,
  WdfUsbRequestTypeDeviceControlTransfer,
  WdfUsbRequestTypeDeviceUrb,
  WdfUsbRequestTypePipeWrite,
  WdfUsbRequestTypePipeRead,
  WdfUsbRequestTypePipeAbort,
  WdfUsbRequestTypePipeReset,
  WdfUsbRequestTypePipeUrb
} WDF_USB_REQUEST_TYPE, *PWDF_USB_REQUEST_TYPE;

Constants

 
WdfUsbRequestTypeInvalid
Value: 0
For internal use only.
WdfUsbRequestTypeNoFormat
This value is not used.
WdfUsbRequestTypeDeviceString
A request to obtain a device's Unicode strings.
WdfUsbRequestTypeDeviceControlTransfer
A request to send a control transfer.
WdfUsbRequestTypeDeviceUrb
A request to send a URB to a device.
WdfUsbRequestTypePipeWrite
A request to write to a pipe.
WdfUsbRequestTypePipeRead
A request to read from a pipe.
WdfUsbRequestTypePipeAbort
A request to stop a pipe.
WdfUsbRequestTypePipeReset
A request to reset a pipe.
WdfUsbRequestTypePipeUrb
A request to send a URB to a pipe.

Remarks

The WDF_USB_REQUEST_TYPE enumeration is used in the WDF_USB_REQUEST_COMPLETION_PARAMS structure.

Requirements

Requirement Value
Minimum KMDF version 1.0
Minimum UMDF version 2.0
Header wdfusb.h (include Wdfusb.h)

See also

WDF_USB_REQUEST_COMPLETION_PARAMS