[PATCH] net/mlx5/hws: fix send queue drain on FW WQE destroy

Raslan Darawsheh rasland at nvidia.com
Tue May 13 08:26:47 CEST 2025


Hi,


On 27/04/2025 2:28 PM, Maayan Kashani wrote:
> Queue sync operation was skipped on rule destroy.
> Unlike on fw wqe rule create in which both fence and notify_hw
> are set to true, on destroy fence was set to false causing
> previous queue operation to be stuck in the queue forever.
> Example:
>     rule_a - HW rule, rule_b - FW WQE rule.
> Sequence:
>     rule_a destroy, burst=1 (HW rule put to queue but no DB)
>     rule_b destroy, burst=0 (FW WQE rule cmd but no queue sync)
> Outcome:
>     rule_a is stuck forever in the queue - no completion.
> 
> Fixes: 338aaf911665 ("net/mlx5/hws: add send FW match STE using gen WQE")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Alex Vesker <valex at nvidia.com>
> Signed-off-by: Maayan Kashani <mkashani at nvidia.com>
> ---

Patch applied to next-net-mlx,

-- 
Kindest regards
Raslan Darawsheh



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