linux/Documentation/ABI/testing/configfs-usb-gadget-loopback

What:		/config/usb-gadget/gadget/functions/Loopback.name
Date:		Nov 2013
KernelVersion:	3.13
Description:
		The attributes:

		=======		=======================
		qlen		depth of loopback queue
		buflen		buffer length
		=======		=======================