Function mlx5_read_clock

dpdk/drivers/net/mlx5/linux/mlx5_ethdev_os.c:326–342

* Get device current raw clock counter * * @param dev * Pointer to Ethernet device structure. * @param[out] time * Current raw clock counter of the device. * * @return * 0 if the clock has correctly been read * The value of errno in case of error */

 *   The value of errno in case of error
 */
int
mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
{
	struct mlx5_priv *priv = dev->data->dev_private;
	struct ibv_context *ctx = priv->sh->cdev->ctx;
	struct ibv_values_ex values;
	int err = 0;

	values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
	err = mlx5_glue->query_rt_values_ex(ctx, &values);
	if (err != 0) {
		DRV_LOG(WARNING, "Could not query the clock !");
		return err;
	}
	*clock = values.raw_clock.tv_nsec;
	return 0;
}

/**
 * Retrieve the master device for representor in the same switch domain.