patch 'net/mlx5: fix meter profile delete after disable' has been queued to stable release 20.11.7

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/05/22. 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/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/897dcb70d3bfc168276f13f74f4c192aaa9ba5d3

Thanks.

Luca Boccassi

---
>From 897dcb70d3bfc168276f13f74f4c192aaa9ba5d3 Mon Sep 17 00:00:00 2001
From: Shun Hao <shunh at nvidia.com>
Date: Sun, 18 Sep 2022 03:58:02 +0300
Subject: [PATCH] net/mlx5: fix meter profile delete after disable

[ upstream commit 9b7fcf395cd9f92e45bb322f983a3b9ead0d47e7 ]

If a meter's profile is changed after meter disabled, there's an issue
that will fail when deleting the old profile.

This patch fixes this by adding the correct process to decrease the old
profile's reference count when changing profile.

Fixes: 63ffeb2ff2 ("net/mlx5: support meter profile update")

Signed-off-by: Shun Hao <shunh at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_meter.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_flow_meter.c b/drivers/net/mlx5/mlx5_flow_meter.c
index 058d94c9cf..9a7a781584 100644
--- a/drivers/net/mlx5/mlx5_flow_meter.c
+++ b/drivers/net/mlx5/mlx5_flow_meter.c
@@ -942,7 +942,7 @@ mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
 	fm->profile = fmp;
 	/* Update meter params in HW (if not disabled). */
 	if (fm->active_state == MLX5_FLOW_METER_DISABLE)
-		return 0;
+		goto dec_ref_cnt;
 	ret = mlx5_flow_meter_action_modify(priv, fm, &fm->profile->srtcm_prm,
 					      modify_bits, fm->active_state);
 	if (ret) {
@@ -952,6 +952,7 @@ mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
 					  NULL, "Failed to update meter"
 					  " parameters in hardware.");
 	}
+dec_ref_cnt:
 	old_fmp->ref_cnt--;
 	fmp->ref_cnt++;
 	return 0;
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-11-03 09:27:28.408948740 +0000
+++ 0049-net-mlx5-fix-meter-profile-delete-after-disable.patch	2022-11-03 09:27:25.449423912 +0000
@@ -1 +1 @@
-From 9b7fcf395cd9f92e45bb322f983a3b9ead0d47e7 Mon Sep 17 00:00:00 2001
+From 897dcb70d3bfc168276f13f74f4c192aaa9ba5d3 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 9b7fcf395cd9f92e45bb322f983a3b9ead0d47e7 ]
+
@@ -13 +14,0 @@
-Cc: stable at dpdk.org
@@ -22 +23 @@
-index 7c0d84907a..d4aafe4eea 100644
+index 058d94c9cf..9a7a781584 100644
@@ -25 +26 @@
-@@ -1656,7 +1656,7 @@ mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
+@@ -942,7 +942,7 @@ mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
@@ -32 +33 @@
- 					      modify_bits, fm->active_state, 1);
+ 					      modify_bits, fm->active_state);
@@ -34 +35 @@
-@@ -1666,6 +1666,7 @@ mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
+@@ -952,6 +952,7 @@ mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,