[dpdk-dev] [PATCH] examples/qos_sched: fix flow pause after 2M packets

[Yong Liu]

    After enable vector pmd, qos_sched only send 32 packets every burst.
    That will cause some packets not transmitted and therefore mempool
    will be drain after a while.
    App qos_sched now will re-send the packets which failed to send out in 
    previous tx function.

Signed-off-by: Yong Liu <yong.liu at intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu at intel.com>
Tested-by: Waterman Cao <waterman.cao at intel.com>
---
 examples/qos_sched/app_thread.c |   16 +++++-----------
 1 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/examples/qos_sched/app_thread.c b/examples/qos_sched/app_thread.c
index 7501147..59c4014 100755
--- a/examples/qos_sched/app_thread.c
+++ b/examples/qos_sched/app_thread.c
@@ -139,17 +139,11 @@ app_send_burst(struct thread_conf *qconf)
 
 	do {
 		ret = rte_eth_tx_burst(qconf->tx_port, qconf->tx_queue, mbufs, (uint16_t)n);
-		if (unlikely(ret < n)) { /* we cannot drop the packets, so re-send */
-			/* update number of packets to be sent */
-			n -= ret;
-			mbufs = (struct rte_mbuf **)&mbufs[ret];
-			/* limit number of retries to avoid endless loop */
-			/* reset retry counter if some packets were sent */
-			if (likely(ret != 0)) {
-				continue;
-			}
-		}
-	} while (ret != n);
+		/* we cannot drop the packets, so re-send */
+		/* update number of packets to be sent */
+		n -= ret;
+		mbufs = (struct rte_mbuf **)&mbufs[ret];
+	} while (n);
 }
 
 
-- 
1.7.7.6