What:		/sys/class/infiniband/<hca>/ports/<port-number>/gid_attrs/ndevs/<gid-index>
Date:		November 29, 2015
KernelVersion:	4.4.0
Contact:	linux-rdma@vger.kernel.org
Description: 	The net-device's name associated with the GID resides
		at index <gid-index>.

What:		/sys/class/infiniband/<hca>/ports/<port-number>/gid_attrs/types/<gid-index>
Date:		November 29, 2015
KernelVersion:	4.4.0
Contact:	linux-rdma@vger.kernel.org
Description: 	The RoCE type of the associated GID resides at index <gid-index>.
		This could either be "IB/RoCE v1" for IB and RoCE v1 based GODs
		or "RoCE v2" for RoCE v2 based GIDs.