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authorRahul Rameshbabu <rrameshbabu@nvidia.com>2024-04-04 00:28:40 +0300
committerJakub Kicinski <kuba@kernel.org>2024-04-06 08:24:09 +0300
commitadda5401807882f5575364442cd583462fc40ae4 (patch)
tree2679b3e980f34bed20e54bc439b7eff290bf8347 /Documentation
parent0e9c127729be19adcdf2f5cc1f3450a4322fdf3a (diff)
downloadlinux-adda5401807882f5575364442cd583462fc40ae4.tar.xz
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')
-rw-r--r--Documentation/networking/device_drivers/ethernet/mellanox/mlx5/counters.rst6
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).