nm_ring_empty
for (; rxcur != head && !nm_ring_empty(rdst);
for ( ; !nm_ring_empty(ring) && cnt != got; got++) {
if (!nm_ring_empty(ring)) {
if (nm_ring_empty(rxring)) {
if (nm_ring_empty(txring)) {
while (!nm_ring_empty(rxring)) {
if (nm_ring_empty(ring)) {
while (!nm_ring_empty(ring)) {
while (!nm_ring_empty(rxring)) {
if (nm_ring_empty(txring))
if (nm_ring_empty(rxring))
if (nm_ring_empty(ring))