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USBD_INTERFACE_INFORMATION structure (usb.h)

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The USBD_INTERFACE_INFORMATION structure holds information about an interface for a configuration on a USB device.

Syntax

typedef struct _USBD_INTERFACE_INFORMATION {
  USHORT                Length;
  UCHAR                 InterfaceNumber;
  UCHAR                 AlternateSetting;
  UCHAR                 Class;
  UCHAR                 SubClass;
  UCHAR                 Protocol;
  UCHAR                 Reserved;
  USBD_INTERFACE_HANDLE InterfaceHandle;
  ULONG                 NumberOfPipes;
  USBD_PIPE_INFORMATION Pipes[1];
} USBD_INTERFACE_INFORMATION, *PUSBD_INTERFACE_INFORMATION;

Members

Length

Specifies the length, in bytes, of this structure.

InterfaceNumber

Specifies the device-defined index identifier for this interface.

AlternateSetting

Specifies a device-defined index identifier that indicates which alternate setting this interface is using, should use, or describes.

Class

Contains a USB-assigned identifier that specifies a USB-defined class that this interface conforms to.

SubClass

Contains a USB-assigned identifier that specifies a USB-defined subclass that this interface conforms to. This code is specific to the code in Class.

Protocol

Contains a USB-assigned identifier that specifies a USB-defined protocol that this interface conforms to. This code is specific to the codes in Class and SubClass.

Reserved

Reserved.

InterfaceHandle

Contains a host controller driver-defined handle that is used to access this interface. This member should be treated as opaque.

NumberOfPipes

Specifies the number of pipes (endpoints) in this interface.

Pipes[1]

Pointer to the first element in the array of USBD_PIPE_INFORMATION structures. The length of the array depends on the number of endpoints in the interface descriptor.

Remarks

Members that are part of this structure, but not described here, should be treated as opaque and considered to be reserved for system use.

The reserved members of this structure must be treated as opaque and are reserved for system use.

Requirements

Requirement Value
Header usb.h (include Usb.h)

See also

USB Structures

USBD_PIPE_INFORMATION