dev_node = hashtable_find(dev_tbl, dev, 1);
if (!(tbl = dev_node->data)) {
tbl = dev_node->data = hashtable_create(512, SIZEOF_INT64 == 8);
dev_node = hashtable_find(dev_tbl, dev, 1);
if (!(tbl = dev_node->data)) {
tbl = dev_node->data = hashtable_create(512, SIZEOF_INT64 == 8);