NETDEV_A_DEV_XDP_FEATURES
nla_put_u64_64bit(rsp, NETDEV_A_DEV_XDP_FEATURES,
if (!tb[NETDEV_A_DEV_IFINDEX] || !tb[NETDEV_A_DEV_XDP_FEATURES])
md->flags = libbpf_nla_getattr_u64(tb[NETDEV_A_DEV_XDP_FEATURES]);