RING_NEXT
pi->ipi_new_pidx = RING_NEXT(txr, pi->ipi_new_pidx);
pi->ipi_new_pidx = RING_NEXT(txr, pi->ipi_new_pidx);
pi->ipi_new_pidx = RING_NEXT(txr, pi->ipi_new_pidx);
ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
ri->iri_cidx = RING_NEXT(&cpr->ring,
cons = RING_NEXT(&cpr->ring, cons);