From: Tiwei Bie <tiwei.bie@intel.com>
Date: Tue, 19 Feb 2019 10:59:47 +0000 (+0800)
Subject: net/virtio: fix Tx desc cleanup for packed ring
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=91397bdc768befd57628e22b99d9eeb7e0ca7085;p=dpdk.git

net/virtio: fix Tx desc cleanup for packed ring

We should try to cleanup at least the 'need' number of descs.

Fixes: 892dc798fa9c ("net/virtio: implement Tx path for packed queues")
Cc: stable@dpdk.org

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 4c701c5147..b07ceac6de 100644
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -1943,7 +1943,6 @@ virtio_xmit_pkts_packed(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 		/* Positive value indicates it need free vring descriptors */
 		if (unlikely(need > 0)) {
-			need = RTE_MIN(need, (int)nb_pkts);
 			virtio_xmit_cleanup_packed(vq, need);
 			need = slots - vq->vq_free_cnt;
 			if (unlikely(need > 0)) {