NFP_FLOWER_MASK_ELEMENT_RS
memcpy(&ring->buf[ring->head * NFP_FLOWER_MASK_ELEMENT_RS], &mask_id,
NFP_FLOWER_MASK_ELEMENT_RS);
memcpy(&temp_id, &ring->buf[ring->tail * NFP_FLOWER_MASK_ELEMENT_RS],
NFP_FLOWER_MASK_ELEMENT_RS);
memcpy(&ring->buf[ring->tail * NFP_FLOWER_MASK_ELEMENT_RS], &freed_id,
NFP_FLOWER_MASK_ELEMENT_RS);
NFP_FLOWER_MASK_ELEMENT_RS, GFP_KERNEL);