DescEndRing
np->tx_ring[entry].length |= DescEndRing;
np->rx_ring[i-1].length |= DescEndRing;
cpu_to_le32(DescEndRing);
cpu_to_le32(DescEndRing) |
hmp->rx_ring[RX_RING_SIZE-1].status_n_length |= cpu_to_le32(DescEndRing);
hmp->rx_ring[RX_RING_SIZE-1].status_n_length |= cpu_to_le32(DescEndRing);
hmp->tx_ring[TX_RING_SIZE-1].status_n_length |= cpu_to_le32(DescEndRing);
DescEndPacket | DescEndRing | DescIntr | skb->len);
cpu_to_le32(DescEndRing);
DescEndPacket | DescEndRing | DescIntr);