RxFIFOOver
if (unlikely(status & (RxFIFOOver | RxOverflow))) {
if (status & RxFIFOOver)
RxAckBits = RxFIFOOver | RxOverflow | RxOK,
PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
tp->irq_mask |= SYSErr | RxFIFOOver;