nm_ring_next
j = nm_ring_next(ring, j);
i = nm_ring_next(ring, i);
ring->head = ring->cur = nm_ring_next(ring, i);
j = nm_ring_next(ring, j);
i = nm_ring_next(ring, i);
ring->head = ring->cur = nm_ring_next(ring, i);
i = nm_ring_next(ring, i);
ring->head = ring->cur = nm_ring_next(ring, i);
ring->cur = nm_ring_next(ring, i);
return nm_ring_next(r, r->tail) != r->head;
j = nm_ring_next(rxring, j);
k = nm_ring_next(txring, k);
next_head = nm_ring_next(rxring, next_head);
mf->shadow_head = nm_ring_next(ring, mf->shadow_head);
scan = nm_ring_next(ring, scan)) {
p->last_tail = nm_ring_next(p->ring, p->ring->tail);
stop = nm_ring_next(ring, ring->tail);
for ( ; last != stop; last = nm_ring_next(ring, last)) {
mf->shadow_head = nm_ring_next(ring, mf->shadow_head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
ring->head = ring->cur = nm_ring_next(ring, ring->head);
ring->head = ring->cur = nm_ring_next(ring, ring->head);
rxring->head = rxring->cur = nm_ring_next(rxring, head);
txhead = nm_ring_next(txring, txhead);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);
head = nm_ring_next(ring, head);