WRITE_BAR0
WRITE_BAR0(sc, VMXNET3_BAR0_RXH1(queue), 0);
WRITE_BAR0(sc, VMXNET3_BAR0_RXH2(queue), 0);
WRITE_BAR0(sc, VMXNET3_BAR0_TXH(tq->queue), prod);
WRITE_BAR0(sc, ring->rxh, prod);
WRITE_BAR0(sc, VMXNET3_BAR0_IMASK(irq), 0);
WRITE_BAR0(sc, VMXNET3_BAR0_IMASK(irq), 1);