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Message-ID: <20240223192658.45893-4-rrameshbabu@nvidia.com>
Date: Fri, 23 Feb 2024 11:24:47 -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>,
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Jonathan Corbet <corbet@....net>,
Richard Cochran <richardcochran@...il.com>,
Tariq Toukan <tariqt@...dia.com>,
Gal Pressman <gal@...dia.com>,
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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>,
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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 3/6] net/mlx5e: Introduce timestamps statistic counter for Tx DMA layer
Count number of transmitted packets that were hardware timestamped at the
device DMA layer.
Signed-off-by: Rahul Rameshbabu <rrameshbabu@...dia.com>
Reviewed-by: Dragos Tatulea <dtatulea@...dia.com>
---
.../device_drivers/ethernet/mellanox/mlx5/counters.rst | 5 +++++
drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 2 ++
drivers/net/ethernet/mellanox/mlx5/core/en_stats.h | 1 +
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 6 ++++--
4 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst
index 5464cd9e2694..fed821ef9b09 100644
--- a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst
+++ b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst
@@ -300,6 +300,11 @@ the software port.
in the beginning of the queue. This is a normal condition.
- Informative
+ * - `tx[i]_timestamps`
+ - Transmitted packets that were hardware timestamped at the device's DMA
+ layer.
+ - Informative
+
* - `tx[i]_added_vlan_packets`
- The number of packets sent where vlan tag insertion was offloaded to the
hardware.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index 7e63d7c88894..bc31196d348a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -2046,6 +2046,7 @@ static const struct counter_desc sq_stats_desc[] = {
{ MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, csum_partial_inner) },
{ MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, added_vlan_packets) },
{ MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, nop) },
+ { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, timestamps) },
{ MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, mpwqe_blks) },
{ MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, mpwqe_pkts) },
#ifdef CONFIG_MLX5_EN_TLS
@@ -2198,6 +2199,7 @@ static const struct counter_desc qos_sq_stats_desc[] = {
{ MLX5E_DECLARE_QOS_TX_STAT(struct mlx5e_sq_stats, csum_partial_inner) },
{ MLX5E_DECLARE_QOS_TX_STAT(struct mlx5e_sq_stats, added_vlan_packets) },
{ MLX5E_DECLARE_QOS_TX_STAT(struct mlx5e_sq_stats, nop) },
+ { MLX5E_DECLARE_QOS_TX_STAT(struct mlx5e_sq_stats, timestamps) },
{ MLX5E_DECLARE_QOS_TX_STAT(struct mlx5e_sq_stats, mpwqe_blks) },
{ MLX5E_DECLARE_QOS_TX_STAT(struct mlx5e_sq_stats, mpwqe_pkts) },
#ifdef CONFIG_MLX5_EN_TLS
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
index 03f6265d3ed5..3c634c5fd420 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
@@ -429,6 +429,7 @@ struct mlx5e_sq_stats {
u64 stopped;
u64 dropped;
u64 recover;
+ u64 timestamps;
/* dirtied @completion */
u64 cqes ____cacheline_aligned_in_smp;
u64 wake;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index 5c166d9d2dca..5acba323246e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -748,11 +748,13 @@ static void mlx5e_consume_skb(struct mlx5e_txqsq *sq, struct sk_buff *skb,
u64 ts = get_cqe_ts(cqe);
hwts.hwtstamp = mlx5e_cqe_ts_to_ns(sq->ptp_cyc2time, sq->clock, ts);
- if (sq->ptpsq)
+ if (sq->ptpsq) {
mlx5e_skb_cb_hwtstamp_handler(skb, MLX5E_SKB_CB_CQE_HWTSTAMP,
hwts.hwtstamp, sq->ptpsq->cq_stats);
- else
+ } else {
skb_tstamp_tx(skb, &hwts);
+ sq->stats->timestamps++;
+ }
}
napi_consume_skb(skb, napi_budget);
--
2.42.0
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