RING_RX_AGG
rxr->rx_sw_agg_prod = RING_RX_AGG(bn, NEXT_RX_AGG(sw_prod));
sw_prod = RING_RX_AGG(bn, NEXT_RX_AGG(sw_prod));
rxr->rx_sw_agg_prod = RING_RX_AGG(bp, NEXT_RX_AGG(sw_prod));
sw_prod = RING_RX_AGG(bp, NEXT_RX_AGG(sw_prod));