IGB_DBA_ALIGN
if ((ntxd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN != 0 ||
IGB_DBA_ALIGN);
IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
if ((nrxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN != 0 ||
IGB_DBA_ALIGN);
IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,