ETHOC_BUFSIZ
128, (netdev->mem_end - netdev->mem_start + 1) / ETHOC_BUFSIZ);
bd.addr += ETHOC_BUFSIZ;
vma += ETHOC_BUFSIZ;
bd.addr += ETHOC_BUFSIZ;
vma += ETHOC_BUFSIZ;
if (unlikely(skb->len > ETHOC_BUFSIZ)) {