As HW vlan strip will reduce the packet length by minus length of vlan tag, so it need restore the packet length by plus it. Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com> Acked-by: Huawei Xie <huawei.xie@intel.com>