spdk: Enable vfio for non-privileged user.

	echo "$ven_dev_id" > "/sys/bus/pci/drivers/$driver_name/new_id" 2> /dev/null || true

	echo "$bdf" > "/sys/bus/pci/drivers/$driver_name/bind" 2> /dev/null || true

	iommu_group=$(basename $(readlink -f /sys/bus/pci/devices/$bdf/iommu_group))

	if [ -e "/dev/vfio/$iommu_group" ]; then

		chown "$username" "/dev/vfio/$iommu_group"

	fi

}

function configure_linux {

		mount -t hugetlbfs nodev /mnt/huge

	fi

	echo "$NRHUGE" > /proc/sys/vm/nr_hugepages

	if [ "$driver_name" = "vfio-pci" ]; then

		chown "$username" /dev/hugepages

		MEMLOCK_AMNT=`ulimit -l`

		if [ "$MEMLOCK_AMNT" != "unlimited" ] ; then

			MEMLOCK_MB=`expr $MEMLOCK_AMNT / 1024`

			echo ""

			echo "Current user memlock limit: ${MEMLOCK_MB} MB"

			echo ""

			echo "This is the maximum amount of memory you will be"

			echo "able to use with DPDK and VFIO if run as current user."

			echo -n "To change this, please adjust limits.conf memlock "

			echo "limit for current user."

			if [ $MEMLOCK_AMNT -lt 65536 ] ; then

				echo ""

				echo "## WARNING: memlock limit is less than 64MB"

				echo -n "## DPDK with VFIO may not be able to initialize "

				echo "if run as current user."

			fi

		fi

	fi

}

function reset_linux {

NRHUGE=1024

mode=$1

username=$1

mode=$2

if [ "$username" = "reset" -o "$username" = "config" ]; then

	mode="$username"

	username=""

fi

if [ "$mode" == "" ]; then

	mode="config"

fi

if [ "$username" = "" ]; then

	username=`logname`

fi

if [ `uname` = Linux ]; then

	if [ "$mode" == "config" ]; then

		configure_linux

		reset_freebsd

	fi

fi