DRBD_A_DEVICE_STATISTICS_DEV_EXPOSED_DATA_UUID
nla = ntb[DRBD_A_DEVICE_STATISTICS_DEV_EXPOSED_DATA_UUID];
if (nla_put_u64_64bit(skb, DRBD_A_DEVICE_STATISTICS_DEV_EXPOSED_DATA_UUID, s->dev_exposed_data_uuid, 0))
[DRBD_A_DEVICE_STATISTICS_DEV_EXPOSED_DATA_UUID] = { .type = NLA_U64, },