From: Amit Cohen <[email protected]> Add link extended state attributes.
Signed-off-by: Amit Cohen <[email protected]> Reviewed-by: Jiri Pirko <[email protected]> Reviewed-by: Jacob Keller <[email protected]> Reviewed-by: Petr Machata <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> --- Documentation/networking/ethtool-netlink.rst | 128 ++++++++++++++++++- 1 file changed, 124 insertions(+), 4 deletions(-) diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index 82470c36c27a..396390f4936b 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -443,10 +443,11 @@ supports. LINKSTATE_GET ============= -Requests link state information. At the moment, only link up/down flag (as -provided by ``ETHTOOL_GLINK`` ioctl command) is provided but some future -extensions are planned (e.g. link down reason). This request does not have any -attributes. +Requests link state information. Link up/down flag (as provided by +``ETHTOOL_GLINK`` ioctl command) is provided. Optionally, extended state might +be provided as well. In general, extended state describes reasons for why a port +is down, or why it operates in some non-obvious mode. This request does not have +any attributes. Request contents: @@ -461,16 +462,135 @@ Kernel response contents: ``ETHTOOL_A_LINKSTATE_LINK`` bool link state (up/down) ``ETHTOOL_A_LINKSTATE_SQI`` u32 Current Signal Quality Index ``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value + ``ETHTOOL_A_LINKSTATE_EXT_STATE`` u8 link extended state + ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` u8 link extended substate ==================================== ====== ============================ For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns carrier flag provided by ``netif_carrier_ok()`` but there are drivers which define their own handler. +``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` are +optional values. ethtool core can provide either both +``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE``, +or only ``ETHTOOL_A_LINKSTATE_EXT_STATE``, or none of them. + ``LINKSTATE_GET`` allows dump requests (kernel returns reply messages for all devices supporting the request). +Link extended states: + + ================================================ ============================================ + ``ETHTOOL_LINK_EXT_STATE_AUTONEG`` States relating to the autonegotiation or + issues therein + + ``ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE`` Failure during link training + + ``ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH`` Logical mismatch in physical coding sublayer + or forward error correction sublayer + + ``ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY`` Signal integrity issues + + ``ETHTOOL_LINK_EXT_STATE_NO_CABLE`` No cable connected + + ``ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE`` Failure is related to cable, + e.g., unsupported cable + + ``ETHTOOL_LINK_EXT_STATE_EEPROM_ISSUE`` Failure is related to EEPROM, e.g., failure + during reading or parsing the data + + ``ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE`` Failure during calibration algorithm + + ``ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED`` The hardware is not able to provide the + power required from cable or module + + ``ETHTOOL_LINK_EXT_STATE_OVERHEAT`` The module is overheated + ================================================= ============================================ + +Link extended substates: + + Autoneg substates: + + ============================================================== ================================ + ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED`` Peer side is down + + ``ETHTOOL_LINK_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED`` Ack not received from peer side + + ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED`` Next page exchange failed + + ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE`` Peer side is down during force + mode or there is no agreement of + speed + + ``ETHTOOL_LINK_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE`` Forward error correction modes + in both sides are mismatched + + ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_HCD`` No Highest Common Denominator + ============================================================== ================================ + + Link training substates: + + ========================================================================== ==================== + ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED`` Frames were not + recognized, the + lock failed + + ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT`` The lock did not + occur before + timeout + + ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY`` Peer side did not + send ready signal + after training + process + + ``ETHTOOL_LINK_EXT_SUBSTATE_LT_REMOTE_FAULT`` Remote side is not + ready yet + ========================================================================== ==================== + + Link logical mismatch substates: + + =============================================================== =============================== + ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK`` Physical coding sublayer was + not locked in first phase - + block lock + + ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK`` Physical coding sublayer was + not locked in second phase - + alignment markers lock + + ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS`` Physical coding sublayer did + not get align status + + ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED`` FC forward error correction is + not locked + + ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED`` RS forward error correction is + not locked + =============================================================== =============================== + + Bad signal integrity substates: + + ================================================================= ============================= + ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS`` Large number of physical + errors + + ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE`` The system attempted to + operate the cable at a rate + that is not formally + supported, which led to + signal integrity issues + ================================================================= ============================= + + Cable issue substates: + + ================================================== ============================================ + ``ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE`` Unsupported cable + + ``ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE`` Cable test failure + ================================================== ============================================ + DEBUG_GET ========= -- 2.26.2
