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

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Message-ID: <1753194228-333722-3-git-send-email-tariqt@nvidia.com>
Date: Tue, 22 Jul 2025 17:23:48 +0300
From: Tariq Toukan <tariqt@...dia.com>
To: 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>
CC: Saeed Mahameed <saeed@...nel.org>, Gal Pressman <gal@...dia.com>, "Leon
 Romanovsky" <leon@...nel.org>, Saeed Mahameed <saeedm@...dia.com>, "Tariq
 Toukan" <tariqt@...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: [PATCH net-next V2 2/2] net/mlx5e: Expose TIS via devlink tx reporter diagnose

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++) {
+			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++) {
-- 
2.31.1