extern unsigned int *low_watermark;
extern unsigned int *high_watermark;
-extern uint8_t port_pairs[RTE_MAX_ETHPORTS];
+extern uint16_t port_pairs[RTE_MAX_ETHPORTS];
extern struct rte_ring *rings[RTE_MAX_LCORE][RTE_MAX_ETHPORTS];
extern struct rte_mempool *mbuf_pool;