yellowfin_desc
struct yellowfin_desc *desc = &yp->rx_ring[entry];
yf_size = sizeof(struct yellowfin_desc);
struct yellowfin_desc *rx_ring;
struct yellowfin_desc *tx_ring;
((i+1)%RX_RING_SIZE)*sizeof(struct yellowfin_desc));
#define TX_TOTAL_SIZE 2*TX_RING_SIZE*sizeof(struct yellowfin_desc)
((i+1)%TX_RING_SIZE)*sizeof(struct yellowfin_desc));
#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct yellowfin_desc)
(j+1)*sizeof(struct yellowfin_desc));
((j+1)%(2*TX_RING_SIZE))*sizeof(struct yellowfin_desc));