RxNoBuf
iowrite32((RxIntr | RxNoBuf), tp->base_addr + CSR5);
if (!rxd && (csr5 & (RxIntr | RxNoBuf))) {
if (csr5 & (RxIntr | RxNoBuf)) {
if (csr5 & (RxDied | RxNoBuf)) {
#define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber)
if (intr_status & (RxIntr | RxNoBuf))
if (intr_status & RxNoBuf)