diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index 360cb1c4221eab26010f2e8a53080a4c9998821c..deac240e6d7856d6098a10af0efe828e5ab99def 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -164,6 +164,7 @@ static struct mlx5_lag *mlx5_lag_dev_alloc(struct mlx5_core_dev *dev)
 	if (err)
 		mlx5_core_err(dev, "Failed to init multipath lag err=%d\n",
 			      err);
+	ldev->ports = MLX5_CAP_GEN(dev, num_lag_ports);
 
 	return ldev;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
index 03a7ea07ce9678b89d1e833ca2f1ba4dcff3060b..1c8fb3fada0c0affdcac1ab79e6f93e275e739c8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
@@ -45,6 +45,7 @@ struct lag_tracker {
  */
 struct mlx5_lag {
 	u8                        flags;
+	u8			  ports;
 	int			  mode_changes_in_progress;
 	bool			  shared_fdb;
 	u8                        v2p_map[MLX5_MAX_PORTS];