patch 'net/iavf: fix mbuf leak' has been queued to stable release 19.11.11

[christian.ehrhardt at canonical.com]

Hi,

FYI, your patch has been queued to stable release 19.11.11

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before December 10th 2021. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/cpaelzer/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/cpaelzer/dpdk-stable-queue/commit/a0422d6ce7d4043f4ea30e63e5df38abd7cba7dc

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From a0422d6ce7d4043f4ea30e63e5df38abd7cba7dc Mon Sep 17 00:00:00 2001
From: Qiming Chen <chenqiming_huawei at 163.com>
Date: Sat, 11 Sep 2021 09:47:09 +0800
Subject: [PATCH] net/iavf: fix mbuf leak

[ upstream commit a38df1edd6324f922ca46a043e87b2489f7bc17e ]

A local test found that repeated port start and stop operations during
the continuous SSE vector bufflist receiving process will cause the mbuf
resource to run out. The final positioning is when the port is stopped,
the mbuf of the pkt_first_seg pointer is not released. Resources leak.
The patch scheme is to judge whether the pointer is empty when the port
is stopped, and release the corresponding mbuf if it is not empty.

Fixes: 69dd4c3d0898 ("net/avf: enable queue and device")

Signed-off-by: Qiming Chen <chenqiming_huawei at 163.com>
Acked-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/iavf/iavf_rxtx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index 17468e4ca0..167f7e53b4 100644
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -165,6 +165,10 @@ reset_rx_queue(struct iavf_rx_queue *rxq)
 
 	rxq->rx_tail = 0;
 	rxq->nb_rx_hold = 0;
+
+	if (rxq->pkt_first_seg != NULL)
+		rte_pktmbuf_free(rxq->pkt_first_seg);
+
 	rxq->pkt_first_seg = NULL;
 	rxq->pkt_last_seg = NULL;
 	rxq->rxrearm_nb = 0;
-- 
2.34.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-11-30 16:50:08.059686882 +0100
+++ 0034-net-iavf-fix-mbuf-leak.patch	2021-11-30 16:50:05.642872444 +0100
@@ -1 +1 @@
-From a38df1edd6324f922ca46a043e87b2489f7bc17e Mon Sep 17 00:00:00 2001
+From a0422d6ce7d4043f4ea30e63e5df38abd7cba7dc Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit a38df1edd6324f922ca46a043e87b2489f7bc17e ]
+
@@ -14 +15,0 @@
-Cc: stable at dpdk.org
@@ -23 +24 @@
-index e33fe4576b..7240e70f9e 100644
+index 17468e4ca0..167f7e53b4 100644
@@ -26 +27 @@
-@@ -225,6 +225,10 @@ reset_rx_queue(struct iavf_rx_queue *rxq)
+@@ -165,6 +165,10 @@ reset_rx_queue(struct iavf_rx_queue *rxq)