From: Luca Boccassi <luca.boccassi@gmail.com>
To: Rongwei Liu <rongweil@nvidia.com>
Cc: stable@dpdk.org, matan@nvidia.com, viacheslavo@nvidia.com,
orika@nvidia.com, suanmingm@nvidia.com, thomas@monjalon.net,
michaelba@nvidia.com
Subject: Re: [PATCH22.11 v1] net/mlx5: fix age checking crash
Date: Tue, 28 Oct 2025 12:13:28 +0000 [thread overview]
Message-ID: <CAMw=ZnQ=xC+SVvaCr19zzU4j4xno_8hqarDxoYOteiMiZQu6YQ@mail.gmail.com> (raw)
In-Reply-To: <20251028081601.1749225-1-rongweil@nvidia.com>
On Tue, 28 Oct 2025 at 08:17, Rongwei Liu <rongweil@nvidia.com> wrote:
>
> When aging is configured, there is a background thread
> which queries all the counters in the pool.
>
> Meantime, per queue flow insertion/deletion/update changes
> the counter pool too. It introduces a race condition between
> resetting counters's in_used and age_idx fields during flow deletion
> and reading them in the background thread.
>
> To resolve it, all key members of counter's struct
> are placed in a single uint32_t and they are accessed atomically.
>
> To avoid the occasional timestamp equalization with age_idx,
> query_gen_when_free is moved out of the union. The total memory
> size is kept the same.
>
> Fixes: 04a4de756e14 ("net/mlx5: support flow age action with HWS")
> Cc: michaelba@nvidia.com
> Cc: stable@dpdk.org
> Signed-off-by: Rongwei Liu <rongweil@nvidia.com>
Hi,
I cannot seem to find a reference to this patch on the main branch?
Was it merged with a different commit?
next prev parent reply other threads:[~2025-10-28 12:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-28 8:16 Rongwei Liu
2025-10-28 12:13 ` Luca Boccassi [this message]
2025-10-28 13:10 ` Thomas Monjalon
2025-10-28 14:48 ` Luca Boccassi
2025-10-29 1:48 ` rongwei liu
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