PREV_INDEX
(*dfunc)(ent->e_name, &ent->e_vs[PREV_INDEX],
rx_tail = PREV_INDEX(rx_next, 1, rx_data->ring_size);
first_tcb->last_index = PREV_INDEX(index, 1, tx_ring->ring_size);
rx_tail = PREV_INDEX(lro_first, 1, rx_data->ring_size);
rx_tail = PREV_INDEX(rx_next, 1, rx_data->ring_size);
prev_index = PREV_INDEX(index, 1,
first_tcb->last_index = PREV_INDEX(index, 1, tx_ring->ring_size);