int mlx4_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
int mlx4_dev_set_link_down(struct rte_eth_dev *dev);
int mlx4_dev_set_link_up(struct rte_eth_dev *dev);
-void mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
+int mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
void mlx4_stats_reset(struct rte_eth_dev *dev);
void mlx4_dev_infos_get(struct rte_eth_dev *dev,
struct rte_eth_dev_info *info);