+/** Data associated with devices to spawn. */
+struct mlx5_dev_spawn_data {
+ unsigned int ifindex; /**< Network interface index. */
+ struct mlx5_switch_info info; /**< Switch information. */
+ struct ibv_device *ibv_dev; /**< Associated IB device. */
+ struct rte_eth_dev *eth_dev; /**< Associated Ethernet device. */
+};
+
+/**
+ * Comparison callback to sort device data.
+ *
+ * This is meant to be used with qsort().
+ *
+ * @param a[in]
+ * Pointer to pointer to first data object.
+ * @param b[in]
+ * Pointer to pointer to second data object.
+ *
+ * @return
+ * 0 if both objects are equal, less than 0 if the first argument is less
+ * than the second, greater than 0 otherwise.
+ */
+static int
+mlx5_dev_spawn_data_cmp(const void *a, const void *b)
+{
+ const struct mlx5_switch_info *si_a =
+ &((const struct mlx5_dev_spawn_data *)a)->info;
+ const struct mlx5_switch_info *si_b =
+ &((const struct mlx5_dev_spawn_data *)b)->info;
+ int ret;
+
+ /* Master device first. */
+ ret = si_b->master - si_a->master;
+ if (ret)
+ return ret;
+ /* Then representor devices. */
+ ret = si_b->representor - si_a->representor;
+ if (ret)
+ return ret;
+ /* Unidentified devices come last in no specific order. */
+ if (!si_a->representor)
+ return 0;
+ /* Order representors by name. */
+ return si_a->port_name - si_b->port_name;
+}
+