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| author |  Rahul Rameshbabu <rrameshbabu@nvidia.com>
| 2024-04-03 14:28:39 -0700 |
|---|---|---|
| committer |  Jakub Kicinski <kuba@kernel.org>
| 2024-04-05 22:24:09 -0700 |
| commit | 0e9c127729be19adcdf2f5cc1f3450a4322fdf3a (patch) | |
| tree | 1c6cc703f28c88dd71c830c2d6953a4acad87472 /Documentation/networking | |
| parent | Merge branch 'address-all-wunused-const-warnings' (diff) | |
| download | linux-0e9c127729be19adcdf2f5cc1f3450a4322fdf3a.tar.gz linux-0e9c127729be19adcdf2f5cc1f3450a4322fdf3a.tar.bz2 linux-0e9c127729be19adcdf2f5cc1f3450a4322fdf3a.zip | |
ethtool: add interface to read Tx hardware timestamping statistics
Multiple network devices that support hardware timestamping appear to have
common behavior with regards to timestamp handling. Implement common Tx
hardware timestamping statistics in a tx_stats struct_group. Common Rx
hardware timestamping statistics can subsequently be implemented in a
rx_stats struct_group for ethtool_ts_stats.
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Link: https://lore.kernel.org/r/20240403212931.128541-2-rrameshbabu@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ethtool-netlink.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index d583d9abf2f8..08d330b0f50f 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -1237,12 +1237,21 @@ Kernel response contents: ``ETHTOOL_A_TSINFO_TX_TYPES`` bitset supported Tx types ``ETHTOOL_A_TSINFO_RX_FILTERS`` bitset supported Rx filters ``ETHTOOL_A_TSINFO_PHC_INDEX`` u32 PTP hw clock index + ``ETHTOOL_A_TSINFO_STATS`` nested HW timestamping statistics ===================================== ====== ========================== ``ETHTOOL_A_TSINFO_PHC_INDEX`` is absent if there is no associated PHC (there is no special value for this case). The bitset attributes are omitted if they would be empty (no bit set). +Additional hardware timestamping statistics response contents: + + ===================================== ====== =================================== + ``ETHTOOL_A_TS_STAT_TX_PKTS`` u64 Packets with Tx HW timestamps + ``ETHTOOL_A_TS_STAT_TX_LOST`` u64 Tx HW timestamp not arrived count + ``ETHTOOL_A_TS_STAT_TX_ERR`` u64 HW error request Tx timestamp count + ===================================== ====== =================================== + CABLE_TEST ========== |