netmap_reset
slot = netmap_reset(na, NR_RX, i, 0);
slot = netmap_reset(na, NR_TX, i, 0);
netmap_reset(NA(adapter->ifp), x, qid, 0);
slot = netmap_reset(na, NR_TX, 0, 0);
struct netmap_slot *slot = netmap_reset(na, NR_RX, 0, 0);
slot = netmap_reset(na, NR_RX, rxq->vtnrx_id, 0);
struct netmap_slot *netmap_reset(struct netmap_adapter *na,
netmap_reset(NA(sc->vtnet_ifp), NR_TX, i, 0);
slot = netmap_reset(na, NR_TX, txq->ift_id, 0);
slot = netmap_reset(na, NR_RX, rxq->ifr_id, 0);