zyd_node
((struct zyd_node *)ni)->amn.amn_retrycnt++;
((struct zyd_node *)data->ni)->amn.amn_txcnt++;
struct zyd_node *zn = (struct zyd_node *)ni;
ieee80211_amrr_node_init(&sc->amrr, &((struct zyd_node *)ni)->amn);
return malloc(sizeof (struct zyd_node), M_USBDEV, M_NOWAIT | M_ZERO);