dn_enqueue
int dn_enqueue(struct dn_queue *q, struct mbuf* m, int drop);
return dn_enqueue((struct dn_queue *)(si+1), m, 0);
if (dn_enqueue(q, m, 0))
if (dn_enqueue(_q, m, 0)) /* packet was dropped */
if (dn_enqueue(q, m, 0)) /* packet was dropped */
if (dn_enqueue(q, m, 0)) /* packet was dropped */