E1000_PBA_40K     665 dev/pci/if_em.c 		sc->tx_fifo_size = (E1000_PBA_40K - pba) << EM_PBA_BYTES_SHIFT;
E1000_PBA_40K     682 dev/pci/if_em.c 			pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */