patch 'net/ixgbe: 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/6d3cd4152bf4c53dc2972ce16ccec55b29173970

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From 6d3cd4152bf4c53dc2972ce16ccec55b29173970 Mon Sep 17 00:00:00 2001
From: Qiming Chen <chenqiming_huawei at 163.com>
Date: Wed, 1 Sep 2021 15:22:37 +0800
Subject: [PATCH] net/ixgbe: fix mbuf leak

[ upstream commit d54b51efb6ef12b8cdfc7316316d99e2a762e1cd ]

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: af75078fece3 ("first public release")

Signed-off-by: Qiming Chen <chenqiming_huawei at 163.com>
Acked-by: Haiyue Wang <haiyue.wang at intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 8b9b009396..ed36a33b5d 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -2838,6 +2838,10 @@ ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq)
 	rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
 	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;
 
-- 
2.34.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-11-30 16:50:07.517362458 +0100
+++ 0024-net-ixgbe-fix-mbuf-leak.patch	2021-11-30 16:50:05.602872150 +0100
@@ -1 +1 @@
-From d54b51efb6ef12b8cdfc7316316d99e2a762e1cd Mon Sep 17 00:00:00 2001
+From 6d3cd4152bf4c53dc2972ce16ccec55b29173970 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit d54b51efb6ef12b8cdfc7316316d99e2a762e1cd ]
+
@@ -14 +15,0 @@
-Cc: stable at dpdk.org
@@ -23 +24 @@
-index c814a28cb4..bfdfd5e755 100644
+index 8b9b009396..ed36a33b5d 100644
@@ -26 +27 @@
-@@ -2981,6 +2981,10 @@ ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq)
+@@ -2838,6 +2838,10 @@ ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq)