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Date: Fri, 23 Feb 2024 11:24:48 -0800
From: Rahul Rameshbabu <rrameshbabu@...dia.com>
To: Saeed Mahameed <saeed@...nel.org>,
Leon Romanovsky <leon@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Jonathan Corbet <corbet@....net>,
Richard Cochran <richardcochran@...il.com>,
Tariq Toukan <tariqt@...dia.com>,
Gal Pressman <gal@...dia.com>,
Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
Ahmed Zaki <ahmed.zaki@...el.com>,
Alexander Lobakin <aleksander.lobakin@...el.com>,
Hangbin Liu <liuhangbin@...il.com>,
Paul Greenwalt <paul.greenwalt@...el.com>,
Justin Stitt <justinstitt@...gle.com>,
Randy Dunlap <rdunlap@...radead.org>,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
Kory Maincent <kory.maincent@...tlin.com>,
Wojciech Drewek <wojciech.drewek@...el.com>,
Vladimir Oltean <vladimir.oltean@....com>,
Jiri Pirko <jiri@...nulli.us>,
Jacob Keller <jacob.e.keller@...el.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Jose Abreu <joabreu@...opsys.com>,
Dragos Tatulea <dtatulea@...dia.com>
Cc: netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org,
Rahul Rameshbabu <rrameshbabu@...dia.com>
Subject: [PATCH RFC net-next v1 4/6] net/mlx5e: Implement ethtool hardware timestamping statistics
Feed driver statistics counters related to hardware timestamping to
standardized ethtool hardware timestamping statistics group.
Signed-off-by: Rahul Rameshbabu <rrameshbabu@...dia.com>
Reviewed-by: Dragos Tatulea <dtatulea@...dia.com>
---
.../ethernet/mellanox/mlx5/core/en_ethtool.c | 9 +++
.../ethernet/mellanox/mlx5/core/en_stats.c | 68 +++++++++++++++++++
.../ethernet/mellanox/mlx5/core/en_stats.h | 2 +
3 files changed, 79 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index cc51ce16df14..d3b77054c30a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -2381,6 +2381,14 @@ static void mlx5e_get_rmon_stats(struct net_device *netdev,
mlx5e_stats_rmon_get(priv, rmon_stats, ranges);
}
+static void mlx5e_get_ts_stats(struct net_device *netdev,
+ struct ethtool_ts_stats *ts_stats)
+{
+ struct mlx5e_priv *priv = netdev_priv(netdev);
+
+ mlx5e_stats_ts_get(priv, ts_stats);
+}
+
const struct ethtool_ops mlx5e_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
@@ -2430,5 +2438,6 @@ const struct ethtool_ops mlx5e_ethtool_ops = {
.get_eth_mac_stats = mlx5e_get_eth_mac_stats,
.get_eth_ctrl_stats = mlx5e_get_eth_ctrl_stats,
.get_rmon_stats = mlx5e_get_rmon_stats,
+ .get_ts_stats = mlx5e_get_ts_stats,
.get_link_ext_stats = mlx5e_get_link_ext_stats
};
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index bc31196d348a..836198445726 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -1155,6 +1155,74 @@ void mlx5e_stats_rmon_get(struct mlx5e_priv *priv,
*ranges = mlx5e_rmon_ranges;
}
+void mlx5e_stats_ts_get(struct mlx5e_priv *priv,
+ struct ethtool_ts_stats *ts_stats)
+{
+ enum ethtool_ts_stats_layer layer;
+ struct mlx5e_ptp *ptp;
+ bool tx_ptp_opened;
+ int i, j;
+
+ mutex_lock(&priv->state_lock);
+
+ tx_ptp_opened = priv->tx_ptp_opened;
+
+ /* NOTE: this needs to be changed whenever ethtool timestamping
+ * layer selection is implemented.
+ */
+ if (ts_stats->layer == ETHTOOL_TS_STATS_LAYER_ACTIVE)
+ layer = tx_ptp_opened ? ETHTOOL_TS_STATS_LAYER_PHY :
+ ETHTOOL_TS_STATS_LAYER_DMA;
+ else
+ layer = ts_stats->layer;
+
+ switch (layer) {
+ case ETHTOOL_TS_STATS_LAYER_PHY:
+ if (!tx_ptp_opened)
+ return;
+
+ ptp = priv->channels.ptp;
+
+ ts_stats->pkts = 0;
+ ts_stats->err = 0;
+ ts_stats->late = 0;
+ ts_stats->lost = 0;
+
+ /* Aggregate stats across all TCs */
+ for (i = 0; i < ptp->num_tc; i++) {
+ struct mlx5e_ptp_cq_stats *stats = ptp->ptpsq[i].cq_stats;
+
+ ts_stats->pkts += stats->cqe;
+ ts_stats->err += stats->abort + stats->err_cqe;
+ ts_stats->late += stats->late_cqe;
+ ts_stats->lost += stats->lost_cqe;
+ }
+ break;
+ case ETHTOOL_TS_STATS_LAYER_DMA:
+ /* DMA layer will always successfully timestamp packets. Other
+ * counters do not make sense for this layer.
+ */
+ ts_stats->pkts = 0;
+
+ /* Aggregate stats across all SQs */
+ mutex_lock(&priv->state_lock);
+ for (j = 0; j < priv->channels.num; j++) {
+ struct mlx5e_channel *c = priv->channels.c[j];
+
+ for (i = 0; i < c->num_tc; i++) {
+ struct mlx5e_sq_stats *stats = c->sq[i].stats;
+
+ ts_stats->pkts += stats->timestamps;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ mutex_unlock(&priv->state_lock);
+}
+
#define PPORT_PHY_STATISTICAL_OFF(c) \
MLX5_BYTE_OFF(ppcnt_reg, \
counter_set.phys_layer_statistical_cntrs.c##_high)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
index 3c634c5fd420..7b3e6cf1229a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
@@ -126,6 +126,8 @@ void mlx5e_stats_eth_ctrl_get(struct mlx5e_priv *priv,
void mlx5e_stats_rmon_get(struct mlx5e_priv *priv,
struct ethtool_rmon_stats *rmon,
const struct ethtool_rmon_hist_range **ranges);
+void mlx5e_stats_ts_get(struct mlx5e_priv *priv,
+ struct ethtool_ts_stats *ts_stats);
void mlx5e_get_link_ext_stats(struct net_device *dev,
struct ethtool_link_ext_stats *stats);
--
2.42.0
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