Commit 3579032c authored by Rahul Rameshbabu's avatar Rahul Rameshbabu Committed by Jakub Kicinski
Browse files

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: default avatarRahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: default avatarDragos Tatulea <dtatulea@nvidia.com>
Link: https://lore.kernel.org/r/20240403212931.128541-5-rrameshbabu@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent cd429012

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

+9 −0
Original line number Diff line number Diff line
@@ -2387,6 +2387,14 @@ 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 |
@@ -2436,5 +2444,6 @@ 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

};

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

+45 −0
Original line number Diff line number Diff line
@@ -1172,6 +1172,51 @@ 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)

{

	int i, j;



	mutex_lock(&priv->state_lock);



	if (priv->tx_ptp_opened) {

		struct mlx5e_ptp *ptp = priv->channels.ptp;



		ts_stats->pkts = 0;

		ts_stats->err = 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 +

				stats->late_cqe;

			ts_stats->lost += stats->lost_cqe;

		}

	} else {

		/* 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 */

		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;

			}

		}

	}



	mutex_unlock(&priv->state_lock);

}



#define PPORT_PHY_STATISTICAL_OFF(c) \

	MLX5_BYTE_OFF(ppcnt_reg, \

		      counter_set.phys_layer_statistical_cntrs.c##_high)

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

+2 −0
Original line number Diff line number Diff line
@@ -128,6 +128,8 @@ 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);