RX_RING
static struct ring_desc rx_ring[RX_RING];
static unsigned char rxb[RX_RING * RX_NIC_BUFSIZE];
struct sk_buff *rx_skbuff[RX_RING];
u32 rx_dma[RX_RING];
for (i = 0; i < RX_RING; i++) {
if (np->cur_rx - refill_rx == RX_RING)
for (i = 0; i < RX_RING; i++) {
writel(((RX_RING - 1) << NVREG_RINGSZ_RXSHIFT) +
i = np->cur_rx % RX_RING;