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[RFC,ethtool-next,v3,6/6] ethtool: Add transceiver module extended states

Message ID 20210824130515.1828270-7-idosch@idosch.org (mailing list archive)
State RFC
Delegated to: Michal Kubecek
Headers show
Series ethtool: Add ability to control transceiver modules' power mode | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Ido Schimmel Aug. 24, 2021, 1:05 p.m. UTC 
From: Ido Schimmel <idosch@nvidia.com>

Add support for an extended state and two extended sub-states to
describe link issues related to transceiver modules.

In case "CMIS transceiver module is not in ModuleReady state" and the
module is in ModuleFault state, it is possible to read the fault reason
from the EEPROM dump.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
---
 netlink/settings.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/netlink/settings.c b/netlink/settings.c
index e47a38f3058f..515b9302c09d 100644
--- a/netlink/settings.c
+++ b/netlink/settings.c
@@ -593,6 +593,7 @@  static const char *const names_link_ext_state[] = {
 	[ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE]	= "Calibration failure",
 	[ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED]	= "Power budget exceeded",
 	[ETHTOOL_LINK_EXT_STATE_OVERHEAT]		= "Overheat",
+	[ETHTOOL_LINK_EXT_STATE_MODULE]			= "Module",
 };
 
 static const char *const names_autoneg_link_ext_substate[] = {
@@ -648,6 +649,13 @@  static const char *const names_cable_issue_link_ext_substate[] = {
 		"Cable test failure",
 };
 
+static const char *const names_module_link_ext_substate[] = {
+	[ETHTOOL_LINK_EXT_SUBSTATE_MODULE_LOW_POWER_MODE]	=
+		"Module is in low power mode",
+	[ETHTOOL_LINK_EXT_SUBSTATE_MODULE_CMIS_NOT_READY]	=
+		"CMIS module is not in ModuleReady state",
+};
+
 static const char *link_ext_substate_get(uint8_t link_ext_state_val, uint8_t link_ext_substate_val)
 {
 	switch (link_ext_state_val) {
@@ -671,6 +679,10 @@  static const char *link_ext_substate_get(uint8_t link_ext_state_val, uint8_t lin
 		return get_enum_string(names_cable_issue_link_ext_substate,
 				       ARRAY_SIZE(names_cable_issue_link_ext_substate),
 				       link_ext_substate_val);
+	case ETHTOOL_LINK_EXT_STATE_MODULE:
+		return get_enum_string(names_module_link_ext_substate,
+				       ARRAY_SIZE(names_module_link_ext_substate),
+				       link_ext_substate_val);
 	default:
 		return NULL;
 	}