Oleksij Rempel feeeeb4c0a ethtool: netlink: do not return SQI value if link is down
[ Upstream commit c184cf94e73b04ff7048d045f5413899bc664788 ]

Do not attach SQI value if link is down. "SQI values are only valid if
link-up condition is present" per OpenAlliance specification of
100Base-T1 Interoperability Test suite [1]. The same rule would apply
for other link types.

[1] https://opensig.org/automotive-ethernet-specifications/#

Fixes: 806602191592 ("ethtool: provide UAPI for PHY Signal Quality Index (SQI)")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Woojung Huh <woojung.huh@microchip.com>
Link: https://patch.msgid.link/20240709061943.729381-1-o.rempel@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-07-18 13:21:14 +02:00
2023-08-31 12:20:12 -07:00
2024-07-11 12:49:08 +02:00
2022-09-28 09:02:20 +02:00
2022-10-10 12:00:45 -07:00
2024-07-15 09:24:53 +02:00

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 Restructured Text 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.
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