Re: [PATCH net 1/3] net/mlx5: Reset bw_share field when changing a node's parent

[Jacob Keller <jacob.e.keller@intel.com>]

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On 7/10/2025 6:53 AM, Tariq Toukan wrote:
> From: Carolina Jubran <cjubran@nvidia.com>
> 
> When changing a node's parent, its scheduling element is destroyed and
> re-created with bw_share 0. However, the node's bw_share field was not
> updated accordingly.
> 
> Set the node's bw_share to 0 after re-creation to keep the software
> state in sync with the firmware configuration.
> 
> Fixes: 9c7bbf4c3304 ("net/mlx5: Add support for setting parent of nodes")
> Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
> Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
> index b6ae384396b3..ad9f6fca9b6a 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
> @@ -1076,6 +1076,7 @@ static int esw_qos_vports_node_update_parent(struct mlx5_esw_sched_node *node,
>  		return err;
>  	}
>  	esw_qos_node_set_parent(node, parent);
> +	node->bw_share = 0;
>  

Makes sense.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>

>  	return 0;
>  }


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