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Oleksij Rempel says: ==================== Add ALCD Support to Cable Testing Interface This patch series introduces support for Active Link Cable Diagnostics (ALCD) in the ethtool cable testing interface and the DP83TD510 PHY driver. Why ALCD? On a 10BaseT1L interface, TDR (Time Domain Reflectometry) is not possible if the link partner is active - TDR will fail in these cases because it requires interrupting the link. Since the link is active, we already know the cable is functioning, so instead of using TDR, we can use ALCD. ALCD lets us measure cable length without disrupting the active link, which is crucial in environments where network uptime is important. It provides a way to gather diagnostic data without the need for downtime. What's in this series: - Extended the ethtool cable testing interface to specify the source of diagnostic results (TDR or ALCD). - Updated the DP83TD510 PHY driver to use ALCD when the link is active, ensuring we can still get cable length info without dropping the connection. ==================== Link: https://patch.msgid.link/20240822120703.1393130-1-o.rempel@pengutronix.de 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.