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391dad2e68
Extend the TX timestamp handler to recover the SQ when the difference between the port and CQE TX timestamps is abnormally large. The current logic aborts timestamp delivery if the delta exceeds 1/128 seconds, which matches the maximum expected packet interval in ptp4l. A larger delta makes the timestamps unreliable. This change adds recovery if the delta exceeds 0.5 seconds. Such a large gap should not occur in normal operation and indicates that firmware is stuck or metadata tracking is out of sync, leading to stale or mismatched timestamps. Recovering the SQ ensures forward progress and avoids silently dropping invalid timestamps. The timestamp handler now takes mlx5e_ptpsq directly to access both CQ stats and the recovery state. Signed-off-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Shahar Shitrit <shshitrit@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/1763415729-1238421-3-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.