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Date: Fri, 18 Sep 2026 16:13:06 +0100
From: Simon Horman <horms@kernel.org>
To: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Cc: intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com,
	netdev@vger.kernel.org, Kiran Patil <kiran.patil@intel.com>
Subject: Re: [PATCH iwl-net v2 5/5] iavf: return 0 when TC flower filter not
 found after qdisc teardown
Message-ID: <20260918151306.GO51261@horms.kernel.org>
References: <20260915125551.3976068-1-aleksandr.loktionov@intel.com>
 <20260915125551.3976068-6-aleksandr.loktionov@intel.com>
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In-Reply-To: <20260915125551.3976068-6-aleksandr.loktionov@intel.com>

On Tue, Sep 15, 2026 at 02:55:51PM +0200, Aleksandr Loktionov wrote:
> From: Kiran Patil <kiran.patil@intel.com>
> 
> When an egress qdisc is destroyed, the driver proactively deletes all
> associated cloud filters to prevent stale hardware state, decrementing
> num_cloud_filters to zero in the process.
> 
> The kernel netdev layer is unaware of this implicit cleanup and may
> still try to delete the same filters individually. If the filter is
> not found in the driver's list and num_cloud_filters is already zero,
> return 0 instead of -EINVAL to avoid confusing upper layers that
> believe the filter is still offloaded in hardware.
> 
> Fixes: 0075fa0fadd0 ("i40evf: Add support to apply cloud filters")
> Cc: stable@vger.kernel.org
> Signed-off-by: Kiran Patil <kiran.patil@intel.com>
> Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>

Reviewed-by: Simon Horman <horms@kernel.org>

...