backend_new_id
uint32_t backend_new_id(backend_tx_t *, enum id_space);
if ((lp->rl_main_id = backend_new_id(tx,
if ((lp->rl_main_id = backend_new_id(tx_wr,
data.sai_level_id = backend_new_id(tx, BACKEND_ID_SNAPLEVEL);
snapid = backend_new_id(tx, BACKEND_ID_SNAPSHOT);
val_id = backend_new_id(data->txc_tx, BACKEND_ID_VALUE);
new_gen = backend_new_id(tx, BACKEND_ID_GENERATION);