patch 'net/mlx5: remove unused reference counter' has been queued to stable release 20.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/11/22. 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/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/b4de25642a7eb5c0f9111e1e5ad84935fa88e988

Thanks.

Luca Boccassi

---
>From b4de25642a7eb5c0f9111e1e5ad84935fa88e988 Mon Sep 17 00:00:00 2001
From: Bing Zhao <bingz at nvidia.com>
Date: Wed, 2 Mar 2022 09:57:35 +0200
Subject: [PATCH] net/mlx5: remove unused reference counter

[ upstream commit cff6aad7af61da8d31e146610f9b4a4875301ef4 ]

In the previous implementation, a count was used to record the number
of the references to a table resource, including the creation of the
table, the jumping to the table and the matchers created on the
table. Before releasing the table resource via the driver, it needed
to ensure that there is no reference to this table.

After the optimization of the resources management, the reference
count now is in the hash list entry as a unified solution for all the
resources management.

There is no need to keep the "refcnt" in the table resource
structure. It is removed in case that there is some unnecessary
memory overhead.

Fixes: afd7a62514ad ("net/mlx5: make flow table cache thread safe")

Signed-off-by: Bing Zhao <bingz at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>
---
 drivers/net/mlx5/mlx5.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 00713d6647..b18fffea52 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -585,7 +585,6 @@ union mlx5_flow_tbl_key {
 /* Table structure. */
 struct mlx5_flow_tbl_resource {
 	void *obj; /**< Pointer to DR table object. */
-	uint32_t refcnt; /**< Reference counter. */
 };
 
 #define MLX5_MAX_TABLES UINT16_MAX
-- 
2.30.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-03-09 16:30:09.798729457 +0000
+++ 0034-net-mlx5-remove-unused-reference-counter.patch	2022-03-09 16:30:08.603026407 +0000
@@ -1 +1 @@
-From cff6aad7af61da8d31e146610f9b4a4875301ef4 Mon Sep 17 00:00:00 2001
+From b4de25642a7eb5c0f9111e1e5ad84935fa88e988 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit cff6aad7af61da8d31e146610f9b4a4875301ef4 ]
+
@@ -21 +22,0 @@
-Cc: stable at dpdk.org
@@ -30 +31 @@
-index 0f0045a2b5..dd5cd9209f 100644
+index 00713d6647..b18fffea52 100644
@@ -33 +34 @@
-@@ -993,7 +993,6 @@ union mlx5_flow_tbl_key {
+@@ -585,7 +585,6 @@ union mlx5_flow_tbl_key {