Hi dpdk-dev,

  test-pmd txonly leaks mbuf from the pool.

tx_mbuf_alloc does not change the refcnt and the refcnt is 0 when it is first allocated. 

 However, rte_pktmbuf_free_seg called by the driver's xmit code decrements reference count to -1. So mbuf never goes back to the pool. 

 As a result, txonly can't send packets after it exhausts the mempool. 

There might be multiple ways to fix this. I decided not to touch memory management.

Thanks,

-Dongsu Han 

---

diff --git a/app/test-pmd/txonly.c b/app/test-pmd/txonly.c

index d7c8c31..ee673e5 100644

--- a/app/test-pmd/txonly.c

+++ b/app/test-pmd/txonly.c

@@ -92,14 +92,7 @@ static struct udp_hdr pkt_udp_hdr; /**< UDP header of transmitted packets. */

 static inline struct rte_mbuf *

 tx_mbuf_alloc(struct rte_mempool *mp)

 {

-       struct rte_mbuf *m;

-       void *mb;

-

-       if (rte_mempool_get(mp, &mb) < 0)

-               return NULL;

-       m = (struct rte_mbuf *)mb;

-       __rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 1);

-       return m;

+       return rte_pktmbuf_alloc(mp);

 }