AGE_RR_RING_SZ
AGE_RR_RING_SZ, age_dmamap_cb,
bzero(rd->age_rr_ring, AGE_RR_RING_SZ);
rr_ring_end = sc->age_rdata.age_rr_ring_paddr + AGE_RR_RING_SZ;
AGE_RR_RING_SZ, /* maxsize */
AGE_RR_RING_SZ, /* maxsegsize */