tree cda41a5f0eb0dfb60822ccd5f309e191d6c73c83
parent 0455dc50bccab9286662f847f560cde6a648802d
author Ido Schimmel <idosch@nvidia.com> 1633517206 +0300
committer Jakub Kicinski <kuba@kernel.org> 1633567670 -0700

ethtool: Add transceiver module extended state

Add an extended state and sub-state to describe link issues related to
transceiver modules.

The 'ETHTOOL_LINK_EXT_SUBSTATE_MODULE_CMIS_NOT_READY' extended sub-state
tells user space that port is unable to gain a carrier because the CMIS
Module State Machine did not reach the ModuleReady (Fully Operational)
state. For example, if the module is stuck at ModuleLowPwr or
ModuleFault state. In case of the latter, user space can read the fault
reason from the module's EEPROM and potentially reset it.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>