linux-kernel - Re: [PATCH net-next V2 2/2] net/mlx5e: Expose TIS via devlink tx reporter diagnose

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Message-ID: <aICHsQPoI+gO3eTQ@mev-dev.igk.intel.com>
Date: Wed, 23 Jul 2025 08:56:49 +0200
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: Tariq Toukan <tariqt@...dia.com>
Cc: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Saeed Mahameed <saeed@...nel.org>, Gal Pressman <gal@...dia.com>,
	Leon Romanovsky <leon@...nel.org>,
	Saeed Mahameed <saeedm@...dia.com>, Mark Bloch <mbloch@...dia.com>,
	netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, Feng Liu <feliu@...dia.com>
Subject: Re: [PATCH net-next V2 2/2] net/mlx5e: Expose TIS via devlink tx
 reporter diagnose

On Tue, Jul 22, 2025 at 05:23:48PM +0300, Tariq Toukan wrote:
> From: Feng Liu <feliu@...dia.com>
> 
> Underneath "TIS Config" tag expose TIS diagnostic information.
> Expose the tisn of each TC under each lag port.
> 
> $ sudo devlink health diagnose auxiliary/mlx5_core.eth.2/131072 reporter tx
> ......
>   TIS Config:
>       lag port: 0 tc: 0 tisn: 0
>       lag port: 1 tc: 0 tisn: 8
> ......
> 
> Signed-off-by: Feng Liu <feliu@...dia.com>
> Reviewed-by: Aya Levin <ayal@...dia.com>
> Signed-off-by: Tariq Toukan <tariqt@...dia.com>
> ---
>  .../mellanox/mlx5/core/en/reporter_tx.c       | 25 +++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
> index bd96988e102c..85d5cb39b107 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
> @@ -311,6 +311,30 @@ mlx5e_tx_reporter_diagnose_common_config(struct devlink_health_reporter *reporte
>  	mlx5e_health_fmsg_named_obj_nest_end(fmsg);
>  }
>  
> +static void
> +mlx5e_tx_reporter_diagnose_tis_config(struct devlink_health_reporter *reporter,
> +				      struct devlink_fmsg *fmsg)
> +{
> +	struct mlx5e_priv *priv = devlink_health_reporter_priv(reporter);
> +	u8 num_tc = mlx5e_get_dcb_num_tc(&priv->channels.params);
> +	u32 tc, i, tisn;
> +
> +	devlink_fmsg_arr_pair_nest_start(fmsg, "TIS Config");
> +	for (i = 0; i < mlx5e_get_num_lag_ports(priv->mdev); i++) {
> +		for (tc = 0; tc < num_tc; tc++) {

nit: tisn can be defined in this for, not outside.

> +			tisn = mlx5e_profile_get_tisn(priv->mdev, priv,
> +						      priv->profile, i, tc);
> +
> +			devlink_fmsg_obj_nest_start(fmsg);
> +			devlink_fmsg_u32_pair_put(fmsg, "lag port", i);
> +			devlink_fmsg_u32_pair_put(fmsg, "tc", tc);
> +			devlink_fmsg_u32_pair_put(fmsg, "tisn", tisn);
> +			devlink_fmsg_obj_nest_end(fmsg);
> +		}
> +	}
> +	devlink_fmsg_arr_pair_nest_end(fmsg);
> +}
> +
>  static int mlx5e_tx_reporter_diagnose(struct devlink_health_reporter *reporter,
>  				      struct devlink_fmsg *fmsg,
>  				      struct netlink_ext_ack *extack)
> @@ -326,6 +350,7 @@ static int mlx5e_tx_reporter_diagnose(struct devlink_health_reporter *reporter,
>  		goto unlock;
>  
>  	mlx5e_tx_reporter_diagnose_common_config(reporter, fmsg);
> +	mlx5e_tx_reporter_diagnose_tis_config(reporter, fmsg);
>  	devlink_fmsg_arr_pair_nest_start(fmsg, "SQs");
>  	for (i = 0; i < priv->channels.num; i++) {

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>

> -- 
> 2.31.1