linux-kernel - [PATCH net-next 3/4] net/mlx5e: Get counter group size by FW capability

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Message-ID: <1741893886-188294-4-git-send-email-tariqt@nvidia.com>
Date: Thu, 13 Mar 2025 21:24:45 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>
CC: Gal Pressman <gal@...dia.com>, Mark Bloch <mbloch@...dia.com>, "Moshe
 Shemesh" <moshe@...dia.com>, Saeed Mahameed <saeedm@...dia.com>, "Leon
 Romanovsky" <leon@...nel.org>, Tariq Toukan <tariqt@...dia.com>, "Jonathan
 Corbet" <corbet@....net>, <netdev@...r.kernel.org>,
	<linux-rdma@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Yael Chemla <ychemla@...dia.com>
Subject: [PATCH net-next 3/4] net/mlx5e: Get counter group size by FW capability

From: Yael Chemla <ychemla@...dia.com>

Retrieve the number of fields supported by each PPCNT counter group
based on the FW capability for this group.

Signed-off-by: Yael Chemla <ychemla@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 .../ethernet/mellanox/mlx5/core/en_stats.c    | 58 ++++++++++---------
 1 file changed, 31 insertions(+), 27 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index 0cf0c920532f..a417962acfa9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -1257,6 +1257,13 @@ pport_phy_statistical_err_lanes_stats_desc[] = {
 #define NUM_PPORT_PHY_STATISTICAL_PER_LANE_COUNTERS \
 	ARRAY_SIZE(pport_phy_statistical_err_lanes_stats_desc)
 
+#define NUM_PPORT_PHY_STATISTICAL_LOOPBACK_COUNTERS(dev) \
+	(MLX5_CAP_PCAM_FEATURE(dev, ppcnt_statistical_group) ? \
+	NUM_PPORT_PHY_STATISTICAL_COUNTERS : 0)
+#define NUM_PPORT_PHY_STATISTICAL_PER_LANE_LOOPBACK_COUNTERS(dev) \
+	(MLX5_CAP_PCAM_FEATURE(dev, per_lane_error_counters) ? \
+	NUM_PPORT_PHY_STATISTICAL_PER_LANE_COUNTERS : 0)
+
 static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(phy)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
@@ -1264,11 +1271,9 @@ static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(phy)
 
 	num_stats = NUM_PPORT_PHY_LAYER_COUNTERS;
 
-	num_stats += MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group) ?
-		     NUM_PPORT_PHY_STATISTICAL_COUNTERS : 0;
+	num_stats += NUM_PPORT_PHY_STATISTICAL_LOOPBACK_COUNTERS(mdev);
 
-	num_stats += MLX5_CAP_PCAM_FEATURE(mdev, per_lane_error_counters) ?
-		     NUM_PPORT_PHY_STATISTICAL_PER_LANE_COUNTERS : 0;
+	num_stats += NUM_PPORT_PHY_STATISTICAL_PER_LANE_LOOPBACK_COUNTERS(mdev);
 
 	return num_stats;
 }
@@ -1281,14 +1286,15 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(phy)
 	for (i = 0; i < NUM_PPORT_PHY_LAYER_COUNTERS; i++)
 		ethtool_puts(data, pport_phy_layer_cntrs_stats_desc[i].format);
 
-	if (MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group))
-		for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_COUNTERS; i++)
-			ethtool_puts(data, pport_phy_statistical_stats_desc[i].format);
+	for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_LOOPBACK_COUNTERS(mdev); i++)
+		ethtool_puts(data, pport_phy_statistical_stats_desc[i].format);
 
-	if (MLX5_CAP_PCAM_FEATURE(mdev, per_lane_error_counters))
-		for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_PER_LANE_COUNTERS; i++)
-			ethtool_puts(data,
-				     pport_phy_statistical_err_lanes_stats_desc[i].format);
+	for (i = 0;
+	     i < NUM_PPORT_PHY_STATISTICAL_PER_LANE_LOOPBACK_COUNTERS(mdev);
+	     i++)
+		ethtool_puts(data,
+			     pport_phy_statistical_err_lanes_stats_desc[i]
+			     .format);
 }
 
 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(phy)
@@ -1303,23 +1309,21 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(phy)
 					.phy_counters,
 					pport_phy_layer_cntrs_stats_desc, i));
 
-	if (MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group))
-		for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_COUNTERS; i++)
-			mlx5e_ethtool_put_stat(
-				data,
-				MLX5E_READ_CTR64_BE(
-					&priv->stats.pport.phy_statistical_counters,
-					pport_phy_statistical_stats_desc, i));
+	for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_LOOPBACK_COUNTERS(mdev); i++)
+		mlx5e_ethtool_put_stat(
+			data,
+			MLX5E_READ_CTR64_BE(
+				&priv->stats.pport.phy_statistical_counters,
+				pport_phy_statistical_stats_desc, i));
 
-	if (MLX5_CAP_PCAM_FEATURE(mdev, per_lane_error_counters))
-		for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_PER_LANE_COUNTERS; i++)
-			mlx5e_ethtool_put_stat(
-				data,
-				MLX5E_READ_CTR64_BE(
-					&priv->stats.pport
-						 .phy_statistical_counters,
-					pport_phy_statistical_err_lanes_stats_desc,
-					i));
+	for (i = 0;
+	     i < NUM_PPORT_PHY_STATISTICAL_PER_LANE_LOOPBACK_COUNTERS(mdev);
+	     i++)
+		mlx5e_ethtool_put_stat(
+			data,
+			MLX5E_READ_CTR64_BE(
+				&priv->stats.pport.phy_statistical_counters,
+				pport_phy_statistical_err_lanes_stats_desc, i));
 }
 
 static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(phy)
-- 
2.31.1