tulip_dequeue_mbuf
struct mbuf * tulip_dequeue_mbuf(tulip_ringinfo_t *ri, tulip_descinfo_t *di,
m = tulip_dequeue_mbuf(ri, di, SYNC_NONE);
m = tulip_dequeue_mbuf(ri, di, SYNC_NONE);
ms = tulip_dequeue_mbuf(ri, eop, SYNC_RX);
ms = tulip_dequeue_mbuf(ri, dip, SYNC_RX);
me->m_next = tulip_dequeue_mbuf(ri, dip, SYNC_RX);
m = tulip_dequeue_mbuf(ri, ri->ri_nextin, SYNC_TX);