[dpdk-stable] patch 'net/i40e: fix mbuf leak during Rx queue release' has been queued to stable release 16.07.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 16.07.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable
yet. It will be pushed if I get no objections before this Friday.
So please shutout if anyone has objections.

Thanks.

	--yliu

---
>From 7a9369541af2773af06826ee3a61a572ab136a7a Mon Sep 17 00:00:00 2001
From: Yury Kylulin <yury.kylulin at intel.com>
Date: Mon, 29 Aug 2016 19:50:48 +0300
Subject: [PATCH] net/i40e: fix mbuf leak during Rx queue release

[ upstream commit 158efcdc5eed048f989c911ab372e78ceb1431bb ]

For the vector PMD, release all mbufs from the Rx queue if no packets
are received after device start.

Fixes: 9ed94e5bb04e ("i40e: add vector Rx")

Signed-off-by: Yury Kylulin <yury.kylulin at intel.com>
Acked-by: Beilei Xing <beilei.xing at intel.com>
---
 drivers/net/i40e/i40e_rxtx_vec.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_rxtx_vec.c b/drivers/net/i40e/i40e_rxtx_vec.c
index 51fb282..82571ee 100644
--- a/drivers/net/i40e/i40e_rxtx_vec.c
+++ b/drivers/net/i40e/i40e_rxtx_vec.c
@@ -692,8 +692,20 @@ i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq)
 		return;
 
 	/* free all mbufs that are valid in the ring */
-	for (i = rxq->rx_tail; i != rxq->rxrearm_start; i = (i + 1) & mask)
-		rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
+	if (rxq->rxrearm_nb == 0) {
+		for (i = 0; i < rxq->nb_rx_desc; i++) {
+			if (rxq->sw_ring[i].mbuf != NULL)
+				rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
+		}
+	} else {
+		for (i = rxq->rx_tail;
+		     i != rxq->rxrearm_start;
+		     i = (i + 1) & mask) {
+			if (rxq->sw_ring[i].mbuf != NULL)
+				rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
+		}
+	}
+
 	rxq->rxrearm_nb = rxq->nb_rx_desc;
 
 	/* set all entries to NULL */
-- 
1.9.0