Re: [PATCH net-next v2] net: mana: Implement ndo_tx_timeout and serialize queue resets per port.

[Pavan Chebbi <pavan.chebbi@broadcom.com>]

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On Tue, Oct 28, 2025 at 1:45 AM Dipayaan Roy
<dipayanroy@linux.microsoft.com> wrote:
>
> Implement .ndo_tx_timeout for MANA so any stalled TX queue can be detected
> and a device-controlled port reset for all queues can be scheduled to a
> ordered workqueue. The reset for all queues on stall detection is
> recomended by hardware team.
>
> The change introduces a single ordered workqueue
> ("mana_per_port_queue_reset_wq") with WQ_UNBOUND | WQ_MEM_RECLAIM and
> queues exactly one work_struct per port onto it. This achieves:
>
>   * Global FIFO across all port reset requests (alloc_ordered_workqueue).
>   * Natural per-port de-duplication: the same work_struct cannot be
>     queued twice while pending/running.
>   * Avoids hogging a per-CPU kworker for long, may-sleep reset paths
>     (WQ_UNBOUND).
>   * Guarantees forward progress during memory pressure
>     (WQ_MEM_RECLAIM rescuer).
>
> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
> Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com>
> ---
> Changes in v2:
>   - Fixed cosmetic changes.
> ---

You must wait at least 24 hours before posting a new revision.
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>

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