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| author | Rahul Rameshbabu <rrameshbabu@nvidia.com> | 2024-04-03 23:28:40 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-04-06 07:24:09 +0200 |
| commit | adda5401807882f5575364442cd583462fc40ae4 (patch) | |
| tree | 2679b3e980f34bed20e54bc439b7eff290bf8347 /Documentation/networking | |
| parent | ethtool: add interface to read Tx hardware timestamping statistics (diff) | |
| download | linux-adda5401807882f5575364442cd583462fc40ae4.tar.xz linux-adda5401807882f5575364442cd583462fc40ae4.zip | |
net/mlx5e: Introduce lost_cqe statistic counter for PTP Tx port timestamping CQ
Track the number of times a CQE was expected to not be delivered on PTP Tx
port timestamping CQ. A CQE is expected to not be delivered if a certain
amount of time passes since the corresponding CQE containing the DMA
timestamp information has arrived. Increment the late_cqe counter when such
a CQE does manage to be delivered to the CQ.
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20240403212931.128541-3-rrameshbabu@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst index f69ee1ebee01..5464cd9e2694 100644 --- a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst +++ b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst @@ -702,6 +702,12 @@ the software port. the device typically ensures not posting the CQE. - Error + * - `ptp_cq[i]_lost_cqe` + - Number of times a CQE is expected to not be delivered on the PTP + timestamping CQE by the device due to a time delta elapsing. If such a + CQE is somehow delivered, `ptp_cq[i]_late_cqe` is incremented. + - Error + .. [#ring_global] The corresponding ring and global counters do not share the same name (i.e. do not follow the common naming scheme). |