struct_usb_interface (9) - what usb device drivers talk to
struct_usb_interface_cache (9) - long-term representation of a device interface
usb_find_interface (9) - find usb_interface pointer for driver and device
usb_interface_claimed (9) - returns true iff an interface is claimed
usb_interface_id (9) - allocate an unused interface ID
USB_INTERFACE_INFO (9) - macro used to describe a class of usb interfaces