ALE_TX_CMB_SZ
memset(sc->ale_cdata.ale_tx_cmb, 0, ALE_TX_CMB_SZ);
error = bus_dmamap_create(sc->sc_dmat, ALE_TX_CMB_SZ, 1,
ALE_TX_CMB_SZ, 0, BUS_DMA_NOWAIT, &sc->ale_cdata.ale_tx_cmb_map);
error = bus_dmamem_alloc(sc->sc_dmat, ALE_TX_CMB_SZ, PAGE_SIZE, 0,
nsegs, ALE_TX_CMB_SZ, (void **)&sc->ale_cdata.ale_tx_cmb,
memset(sc->ale_cdata.ale_tx_cmb, 0, ALE_TX_CMB_SZ);
sc->ale_cdata.ale_tx_cmb, ALE_TX_CMB_SZ, NULL, BUS_DMA_WAITOK);