[Linuxarm] questions about netdevice->features

Hi, I noticed that the enum NETIF_F_XXX_BIT has already used 64 bits since NETIF_F_HW_HSR_DUP_BIT being added, while the prototype of netdev_features_t is u64.   So there is no useable bit for new feature if I understand correct. Is there any solution or plan for it ? Thanks, shen jian