[PATCH] net/mlx5: fix Rx queue ref count in flushing user flows

[Raslan Darawsheh]

Hi,

From: Bing Zhao <bingz at nvidia.com>
Sent: Wednesday, November 13, 2024 9:22 AM
To: Dariusz Sosnowski; Slava Ovsiienko; dev at dpdk.org; Raslan Darawsheh
Cc: Ori Kam; Suanming Mou; Matan Azrad; stable at dpdk.org
Subject: [PATCH] net/mlx5: fix Rx queue ref count in flushing user flows

Some indirect table and hrxq is created in the rule creation with
QUEUE or RSS action. When stopping a port, the 'dev_started' is set
to 0 in the beginning. The mlx5_ind_table_obj_release() should still
do the dereference of the queue(s) when it is called in the polling
of flow rule deletion, due to the fact that a flow with Q/RSS action
is always referring to the active Rx queues.

The callback now can only pass one input parameter. Using a global
flag per device to indicate that the user flows flushing is in
progress. Then the reference count of the queue(s) should be
decreased.

Fixes: 3a2f674b6aa8 ("net/mlx5: add queue and RSS HW steering action")
Cc: stable at dpdk.org

Signed-off-by: Bing Zhao <bingz at nvidia.com>
Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh