Function check_cqe

dpdk/drivers/common/mlx5/mlx5_common.h:219–232

* Check whether CQE is valid using owner bit. * * @param cqe * Pointer to CQE. * @param cqes_n * Size of completion queue. * @param ci * Consumer index. * * @return * The CQE status. */

 *   The CQE status.
 */
static __rte_always_inline enum mlx5_cqe_status
check_cqe(volatile struct mlx5_cqe *cqe, const uint16_t cqes_n,
	  const uint16_t ci)
{
	const uint16_t idx = ci & cqes_n;
	const uint8_t op_own = cqe->op_own;
	const uint8_t op_owner = MLX5_CQE_OWNER(op_own);
	const uint8_t op_code = MLX5_CQE_OPCODE(op_own);

	if (unlikely((op_owner != (!!(idx))) ||
		     (op_code == MLX5_CQE_INVALID)))
		return MLX5_CQE_STATUS_HW_OWN;
	return check_cqe_error(op_code);
}

/**
 * Check whether CQE is valid using validity iteration count.