Merge branch 'mlx5e-support-recovery-counter-in-reset'

Tariq Toukan says:

====================
mlx5e: Support recovery counter in reset

This series by Yael adds a recovery counter in ethtool, for any recovery
type during port reset cycle.
Series starts with some cleanup and refactoring patches.
New counter is added and exposed to ethtool stats in patch #4.
====================

Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

Author: Paolo Abeni

Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst

@@ -1082,6 +1082,11 @@ like flow control, FEC and more.
        need to replace the cable/transceiver.
      - Error
 
+   * - `total_success_recovery_phy`
+     - The number of total successful recovery events of any type during
+       ports reset cycle.
+     - Error
+
    * - `rx_out_of_buffer`
      - Number of times receive queue had no software buffers allocated for the
        adapter's incoming traffic.

drivers/net/ethernet/mellanox/mlx5/core/en_stats.c

@@ -1227,6 +1227,13 @@ void mlx5e_stats_ts_get(struct mlx5e_priv *priv,
 	mutex_unlock(&priv->state_lock);
 }
 
+#define PPORT_PHY_LAYER_OFF(c) \
+	MLX5_BYTE_OFF(ppcnt_reg, \
+		      counter_set.phys_layer_cntrs.c)
+static const struct counter_desc pport_phy_layer_cntrs_stats_desc[] = {
+	{ "link_down_events_phy", PPORT_PHY_LAYER_OFF(link_down_events) }
+};
+
 #define PPORT_PHY_STATISTICAL_OFF(c) \
 	MLX5_BYTE_OFF(ppcnt_reg, \
 		      counter_set.phys_layer_statistical_cntrs.c##_high)
@@ -1243,25 +1250,45 @@ pport_phy_statistical_err_lanes_stats_desc[] = {
 	{ "rx_err_lane_3_phy", PPORT_PHY_STATISTICAL_OFF(phy_corrected_bits_lane3) },
 };
 
+#define PPORT_PHY_RECOVERY_OFF(c) \
+	MLX5_BYTE_OFF(ppcnt_reg, counter_set.phys_layer_recovery_cntrs.c)
+static const struct counter_desc
+pport_phy_recovery_cntrs_stats_desc[] = {
+	{ "total_success_recovery_phy",
+	  PPORT_PHY_RECOVERY_OFF(total_successful_recovery_events) }
+};
+
+#define NUM_PPORT_PHY_LAYER_COUNTERS \
+	ARRAY_SIZE(pport_phy_layer_cntrs_stats_desc)
 #define NUM_PPORT_PHY_STATISTICAL_COUNTERS \
 	ARRAY_SIZE(pport_phy_statistical_stats_desc)
 #define NUM_PPORT_PHY_STATISTICAL_PER_LANE_COUNTERS \
 	ARRAY_SIZE(pport_phy_statistical_err_lanes_stats_desc)
+#define NUM_PPORT_PHY_RECOVERY_COUNTERS \
+	ARRAY_SIZE(pport_phy_recovery_cntrs_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)
+#define NUM_PPORT_PHY_RECOVERY_LOOPBACK_COUNTERS(dev) \
+	(MLX5_CAP_PCAM_FEATURE(dev, ppcnt_recovery_counters) ? \
+	NUM_PPORT_PHY_RECOVERY_COUNTERS : 0)
 
 static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(phy)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int num_stats;
 
-	/* "1" for link_down_events special counter */
-	num_stats = 1;
+	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);
 
+	num_stats += NUM_PPORT_PHY_RECOVERY_LOOPBACK_COUNTERS(mdev);
 	return num_stats;
 }
 
@@ -1270,49 +1297,58 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(phy)
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int i;
 
-	ethtool_puts(data, "link_down_events_phy");
-
-	if (!MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group))
-		return;
+	for (i = 0; i < NUM_PPORT_PHY_LAYER_COUNTERS; i++)
+		ethtool_puts(data, pport_phy_layer_cntrs_stats_desc[i].format);
 
-	for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_COUNTERS; i++)
+	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);
+
+	for (i = 0; i < NUM_PPORT_PHY_RECOVERY_LOOPBACK_COUNTERS(mdev); i++)
+		ethtool_puts(data,
+			     pport_phy_recovery_cntrs_stats_desc[i].format);
 }
 
 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(phy)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int i;
 
-	/* link_down_events_phy has special handling since it is not stored in __be64 format */
-	mlx5e_ethtool_put_stat(
-		data, MLX5_GET(ppcnt_reg, priv->stats.pport.phy_counters,
-			       counter_set.phys_layer_cntrs.link_down_events));
-
-	if (!MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group))
-		return;
+	for (i = 0; i < NUM_PPORT_PHY_LAYER_COUNTERS; i++)
+		mlx5e_ethtool_put_stat(
+				data,
+				MLX5E_READ_CTR32_BE(&priv->stats.pport
+					.phy_counters,
+					pport_phy_layer_cntrs_stats_desc, i));
 
-	for (i = 0; i < NUM_PPORT_PHY_STATISTICAL_COUNTERS; 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));
+
+	for (i = 0; i < NUM_PPORT_PHY_RECOVERY_LOOPBACK_COUNTERS(mdev); i++)
+		mlx5e_ethtool_put_stat(
+			data,
+			MLX5E_READ_CTR32_BE(
+				&priv->stats.pport.phy_recovery_counters,
+				pport_phy_recovery_cntrs_stats_desc, i));
 }
 
 static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(phy)
@@ -1328,12 +1364,21 @@ static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(phy)
 	MLX5_SET(ppcnt_reg, in, grp, MLX5_PHYSICAL_LAYER_COUNTERS_GROUP);
 	mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPCNT, 0, 0);
 
-	if (!MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group))
-		return;
+	if (MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_statistical_group)) {
+		out = pstats->phy_statistical_counters;
+		MLX5_SET(ppcnt_reg, in, grp,
+			 MLX5_PHYSICAL_LAYER_STATISTICAL_GROUP);
+		mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPCNT, 0,
+				     0);
+	}
 
-	out = pstats->phy_statistical_counters;
-	MLX5_SET(ppcnt_reg, in, grp, MLX5_PHYSICAL_LAYER_STATISTICAL_GROUP);
-	mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPCNT, 0, 0);
+	if (MLX5_CAP_PCAM_FEATURE(mdev, ppcnt_recovery_counters)) {
+		out = pstats->phy_recovery_counters;
+		MLX5_SET(ppcnt_reg, in, grp,
+			 MLX5_PHYSICAL_LAYER_RECOVERY_GROUP);
+		mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPCNT, 0,
+				     0);
+	}
 }
 
 void mlx5e_get_link_ext_stats(struct net_device *dev,

drivers/net/ethernet/mellanox/mlx5/core/en_stats.h

@@ -309,6 +309,9 @@ struct mlx5e_vport_stats {
 #define PPORT_PHY_STATISTICAL_GET(pstats, c) \
 	MLX5_GET64(ppcnt_reg, (pstats)->phy_statistical_counters, \
 		   counter_set.phys_layer_statistical_cntrs.c##_high)
+#define PPORT_PHY_RECOVERY_GET(pstats, c) \
+	MLX5_GET64(ppcnt_reg, (pstats)->phy_recovery_counters, \
+		   counter_set.phys_layer_recovery_cntrs.c)
 #define PPORT_PER_PRIO_GET(pstats, prio, c) \
 	MLX5_GET64(ppcnt_reg, pstats->per_prio_counters[prio], \
 		   counter_set.eth_per_prio_grp_data_layout.c##_high)
@@ -324,6 +327,7 @@ struct mlx5e_pport_stats {
 	__be64 per_prio_counters[NUM_PPORT_PRIO][MLX5_ST_SZ_QW(ppcnt_reg)];
 	__be64 phy_counters[MLX5_ST_SZ_QW(ppcnt_reg)];
 	__be64 phy_statistical_counters[MLX5_ST_SZ_QW(ppcnt_reg)];
+	__be64 phy_recovery_counters[MLX5_ST_SZ_QW(ppcnt_reg)];
 	__be64 eth_ext_counters[MLX5_ST_SZ_QW(ppcnt_reg)];
 	__be64 per_tc_prio_counters[NUM_PPORT_PRIO][MLX5_ST_SZ_QW(ppcnt_reg)];
 	__be64 per_tc_congest_prio_counters[NUM_PPORT_PRIO][MLX5_ST_SZ_QW(ppcnt_reg)];