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Date:   Tue, 31 Oct 2017 15:06:41 -0700
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org,
        Stephen Hemminger <stephen@...workplumber.org>,
        Kamal Heib <kamalh@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 08/14] net/mlx5e: Switch ethernet extended counters to use stats group API

From: Kamal Heib <kamalh@...lanox.com>

Switch the ethernet extended counters to use the new stats group API.

Signed-off-by: Kamal Heib <kamalh@...lanox.com>
Reviewed-by: Gal Pressman <galp@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 .../net/ethernet/mellanox/mlx5/core/en_ethtool.c   |  8 ----
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 47 ++++++++++++++++++++++
 drivers/net/ethernet/mellanox/mlx5/core/en_stats.h | 13 +-----
 3 files changed, 48 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 547b7fa48637..2da0bb88fa39 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -216,10 +216,6 @@ static void mlx5e_fill_stats_strings(struct mlx5e_priv *priv, u8 *data)
 	for (i = 0; i < mlx5e_num_stats_grps; i++)
 		idx = mlx5e_stats_grps[i].fill_strings(priv, data, idx);
 
-	for (i = 0; i < NUM_PPORT_ETH_EXT_COUNTERS(priv); i++)
-		strcpy(data + (idx++) * ETH_GSTRING_LEN,
-		       pport_eth_ext_stats_desc[i].format);
-
 	for (i = 0; i < NUM_PCIE_PERF_COUNTERS(priv); i++)
 		strcpy(data + (idx++) * ETH_GSTRING_LEN,
 		       pcie_perf_stats_desc[i].format);
@@ -332,10 +328,6 @@ void mlx5e_ethtool_get_ethtool_stats(struct mlx5e_priv *priv,
 	for (i = 0; i < mlx5e_num_stats_grps; i++)
 		idx = mlx5e_stats_grps[i].fill_stats(priv, data, idx);
 
-	for (i = 0; i < NUM_PPORT_ETH_EXT_COUNTERS(priv); i++)
-		data[idx++] = MLX5E_READ_CTR64_BE(&priv->stats.pport.eth_ext_counters,
-						  pport_eth_ext_stats_desc, i);
-
 	for (i = 0; i < NUM_PCIE_PERF_COUNTERS(priv); i++)
 		data[idx++] = MLX5E_READ_CTR32_BE(&priv->stats.pcie.pcie_perf_counters,
 						  pcie_perf_stats_desc, i);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index 3838f109ceb1..a4edfd8726f3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -373,6 +373,48 @@ static int mlx5e_grp_phy_fill_stats(struct mlx5e_priv *priv, u64 *data, int idx)
 	return idx;
 }
 
+#define PPORT_ETH_EXT_OFF(c) \
+	MLX5_BYTE_OFF(ppcnt_reg, \
+		      counter_set.eth_extended_cntrs_grp_data_layout.c##_high)
+static const struct counter_desc pport_eth_ext_stats_desc[] = {
+	{ "rx_buffer_passed_thres_phy", PPORT_ETH_EXT_OFF(rx_buffer_almost_full) },
+};
+
+#define NUM_PPORT_ETH_EXT_COUNTERS	ARRAY_SIZE(pport_eth_ext_stats_desc)
+
+static int mlx5e_grp_eth_ext_get_num_stats(struct mlx5e_priv *priv)
+{
+	if (MLX5_CAP_PCAM_FEATURE((priv)->mdev, rx_buffer_fullness_counters))
+		return NUM_PPORT_ETH_EXT_COUNTERS;
+
+	return 0;
+}
+
+static int mlx5e_grp_eth_ext_fill_strings(struct mlx5e_priv *priv, u8 *data,
+					  int idx)
+{
+	int i;
+
+	if (MLX5_CAP_PCAM_FEATURE((priv)->mdev, rx_buffer_fullness_counters))
+		for (i = 0; i < NUM_PPORT_ETH_EXT_COUNTERS; i++)
+			strcpy(data + (idx++) * ETH_GSTRING_LEN,
+			       pport_eth_ext_stats_desc[i].format);
+	return idx;
+}
+
+static int mlx5e_grp_eth_ext_fill_stats(struct mlx5e_priv *priv, u64 *data,
+					int idx)
+{
+	int i;
+
+	if (MLX5_CAP_PCAM_FEATURE((priv)->mdev, rx_buffer_fullness_counters))
+		for (i = 0; i < NUM_PPORT_ETH_EXT_COUNTERS; i++)
+			data[idx++] =
+				MLX5E_READ_CTR64_BE(&priv->stats.pport.eth_ext_counters,
+						    pport_eth_ext_stats_desc, i);
+	return idx;
+}
+
 const struct mlx5e_stats_grp mlx5e_stats_grps[] = {
 	{
 		.get_num_stats = mlx5e_grp_sw_get_num_stats,
@@ -409,6 +451,11 @@ const struct mlx5e_stats_grp mlx5e_stats_grps[] = {
 		.fill_strings = mlx5e_grp_phy_fill_strings,
 		.fill_stats = mlx5e_grp_phy_fill_stats,
 	},
+	{
+		.get_num_stats = mlx5e_grp_eth_ext_get_num_stats,
+		.fill_strings = mlx5e_grp_eth_ext_fill_strings,
+		.fill_stats = mlx5e_grp_eth_ext_fill_stats,
+	}
 };
 
 const int mlx5e_num_stats_grps = ARRAY_SIZE(mlx5e_stats_grps);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
index 964a1c69cb51..c0e84394c3fc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
@@ -121,9 +121,6 @@ struct mlx5e_vport_stats {
 	MLX5_GET64(ppcnt_reg, pstats->per_prio_counters[prio], \
 		   counter_set.eth_per_prio_grp_data_layout.c##_high)
 #define NUM_PPORT_PRIO				8
-#define PPORT_ETH_EXT_OFF(c) \
-	MLX5_BYTE_OFF(ppcnt_reg, \
-		      counter_set.eth_extended_cntrs_grp_data_layout.c##_high)
 #define PPORT_ETH_EXT_GET(pstats, c) \
 	MLX5_GET64(ppcnt_reg, (pstats)->eth_ext_counters, \
 		   counter_set.eth_extended_cntrs_grp_data_layout.c##_high)
@@ -154,10 +151,6 @@ static const struct counter_desc pport_per_prio_pfc_stats_desc[] = {
 	{ "rx_%s_pause_transition", PPORT_PER_PRIO_OFF(rx_pause_transition) },
 };
 
-static const struct counter_desc pport_eth_ext_stats_desc[] = {
-	{ "rx_buffer_passed_thres_phy", PPORT_ETH_EXT_OFF(rx_buffer_almost_full) },
-};
-
 #define PCIE_PERF_OFF(c) \
 	MLX5_BYTE_OFF(mpcnt_reg, counter_set.pcie_perf_cntrs_grp_data_layout.c)
 #define PCIE_PERF_GET(pcie_stats, c) \
@@ -289,12 +282,8 @@ static const struct counter_desc sq_stats_desc[] = {
 	ARRAY_SIZE(pport_per_prio_traffic_stats_desc)
 #define NUM_PPORT_PER_PRIO_PFC_COUNTERS \
 	ARRAY_SIZE(pport_per_prio_pfc_stats_desc)
-#define NUM_PPORT_ETH_EXT_COUNTERS(priv) \
-	(ARRAY_SIZE(pport_eth_ext_stats_desc) * \
-	 MLX5_CAP_PCAM_FEATURE((priv)->mdev, rx_buffer_fullness_counters))
 #define NUM_PPORT_COUNTERS(priv)	(NUM_PPORT_PER_PRIO_TRAFFIC_COUNTERS * \
-					 NUM_PPORT_PRIO + \
-					 NUM_PPORT_ETH_EXT_COUNTERS(priv))
+					 NUM_PPORT_PRIO)
 #define NUM_PCIE_COUNTERS(priv)		(NUM_PCIE_PERF_COUNTERS(priv) + \
 					 NUM_PCIE_PERF_COUNTERS64(priv) +\
 					 NUM_PCIE_PERF_STALL_COUNTERS(priv))
-- 
2.14.2

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