+/**
+ * Read device counters.
+ *
+ * @param dev
+ * Pointer to Ethernet device.
+ * @param[out] stats
+ * Counters table output buffer.
+ *
+ * @return
+ * 0 on success and stats is filled, negative errno value otherwise and
+ * rte_errno is set.
+ */
+int
+mlx5_os_read_dev_counters(struct rte_eth_dev *dev, uint64_t *stats)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_xstats_ctrl *xstats_ctrl = &priv->xstats_ctrl;
+ int ret = 0, i;
+
+ memset(stats, 0, sizeof(*stats) * xstats_ctrl->mlx5_stats_n);
+ /* Read ifreq counters. */
+ if (priv->master && priv->pf_bond >= 0) {
+ /* Sum xstats from bonding device member ports. */
+ for (i = 0; i < priv->sh->bond.n_port; i++) {
+ ret = _mlx5_os_read_dev_counters(dev, i, stats);
+ if (ret)
+ return ret;
+ }
+ } else {
+ ret = _mlx5_os_read_dev_counters(dev, -1, stats);
+ }
+ /* Read IB counters. */
+ for (i = 0; i != xstats_ctrl->mlx5_stats_n; ++i) {
+ if (!xstats_ctrl->info[i].dev)
+ continue;
+ ret = mlx5_os_read_dev_stat(priv, xstats_ctrl->info[i].ctr_name,
+ &stats[i]);
+ /* return last xstats counter if fail to read. */
+ if (ret != 0)
+ xstats_ctrl->xstats[i] = stats[i];
+ else
+ stats[i] = xstats_ctrl->xstats[i];
+ }
+ return ret;
+}
+