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docs: ethtool: Add two link extended substates of bad signal integrity 

Add documentation for two bad signal integrity substates:
ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_REFERENCE_CLOCK_LOST
ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_ALOS.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Guangbin Huang 2021-08-16 10:15:26 +08:00 committed by Jakub Kicinski
parent 1b3f78df6a
commit 958ab281eb
1 changed files with 8 additions and 0 deletions
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8
Documentation/networking/ethtool-netlink.rst
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@ -595,6 +595,14 @@ Link extended substates:
that is not formally
supported, which led to
signal integrity issues
``ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_REFERENCE_CLOCK_LOST`` The external clock signal for
SerDes is too weak or
unavailable.
``ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_ALOS`` The received signal for
SerDes is too weak because
analog loss of signal.
================================================================= =============================
Cable issue substates: