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John Fraker
3bf5431fef
Allow the rx path to recover the high 32 bits of the full 64 bit rx timestamp. Use the low 32 bits of the last synced nic time and the 32 bits of the timestamp provided in the rx descriptor to generate a difference, which is then applied to the last synced nic time to reconstruct the complete 64-bit timestamp. This scheme remains accurate as long as no more than ~2 seconds have passed between the last read of the nic clock and the timestamping application of the received packet. Signed-off-by: John Fraker <jfraker@google.com> Signed-off-by: Ziwei Xiao <ziweixiao@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com> Link: https://patch.msgid.link/20250614000754.164827-7-hramamurthy@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.