selftests: forwarding: Add tc offload check helper

       sysctl -q -w net.ipv4.conf.all.forwarding=$ipv4_fwd

}

tc_offload_check()

{

	for i in $(eval echo {1..$NUM_NETIFS}); do

		ethtool -k ${NETIFS[p$i]} \

			| grep "hw-tc-offload: on" &> /dev/null

		if [[ $? -ne 0 ]]; then

			return 1

		fi

	done

	return 0

}

##############################################################################

# Tests