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Some PHYs can recognize during a cable test if the impedance in the cable is okay. They can detect reflections caused by impedance discontinuity between a regular 100 Ohm cable and an abnormal part with a higher or lower impedance. This commit introduces a new result code: ETHTOOL_A_CABLE_RESULT_CODE_IMPEDANCE_MISMATCH, which represents the results of a cable test indicating issues with impedance integrity. Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20240402201123.2961909-2-paweldembicki@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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