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Message-ID: <7d3b3d56-b3cf-49aa-9690-60d230903474@gmail.com>
Date: Tue, 15 Oct 2024 16:13:46 -0400
From: Daniel Zahka <daniel.zahka@...il.com>
To: mkubecek@...e.cz
Cc: netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
idosch@...dia.com, danieller@...dia.com
Subject: [RFC ethtool] ethtool: mock JSON output for --module-info
I would like to support json output for the ethtool --module-info
command. As a first step, I would like to show some real output from a
CMIS 4.0 compliant transceiver and then propose some mock output for the
--json version. The general approach is as follows:
1. Byte fields that are currently rendered as hex with a parenthetical
description get split into two keys: one with a number value, and a
second key with a "_description" suffix containing the string
description. This idea is from
https://lore.kernel.org/all/20220704054114.22582-2-matt@traverse.com.au/
2. Fields that are currently rendered as floating point numbers with
units get split into two keys: one with the number value, and one with a
string value showing the units.
3. On/Off is rendered as true/false.
4. yes/no is rendered as true/false.
5. per channel fields are rendered as arrays of boolean. In the sample
output the module has one bank with 8 total channels.
6. vendor info is displayed as byte arrays.
Here is the original output for ethtool -m <iface> for the CMIS 4.0 module:
Identifier : 0x18 (QSFP-DD Double Density
8X Pluggable Transceiver (INF-8628))
Power class : 5
Max power : 10.00W
Connector : 0x0c (MPO Parallel Optic)
Cable assembly length : 0.00m
Tx CDR bypass control : No
Rx CDR bypass control : No
Tx CDR : Yes
Rx CDR : Yes
Transmitter technology : 0x06 (1310 nm EML)
Laser wavelength : 1311.000nm
Laser wavelength tolerance : 6.500nm
Length (SMF) : 2.00km
Length (OM5) : 0m
Length (OM4) : 0m
Length (OM3 50/125um) : 0m
Length (OM2 50/125um) : 0m
Vendor name : Arista Networks
Vendor OUI : 00:1c:73
Vendor PN : QDD-400G-XDR4
Vendor rev : 41
Vendor SN : XKT242211481
Date code : 240531
Revision compliance : Rev. 4.0
Rx loss of signal : None
Tx loss of signal : None
Rx loss of lock : None
Tx loss of lock : None
Tx fault : None
Module State : 0x03 (ModuleReady)
LowPwrAllowRequestHW : On
LowPwrRequestSW : Off
Module temperature : 70.49 degrees C / 158.89
degrees F
Module voltage : 3.2186 V
Laser tx bias current (Channel 1) : 83.806 mA
Laser tx bias current (Channel 2) : 81.878 mA
Laser tx bias current (Channel 3) : 72.900 mA
Laser tx bias current (Channel 4) : 110.100 mA
Laser tx bias current (Channel 5) : 0.000 mA
Laser tx bias current (Channel 6) : 0.000 mA
Laser tx bias current (Channel 7) : 0.000 mA
Laser tx bias current (Channel 8) : 0.000 mA
Transmit avg optical power (Channel 1) : 1.5975 mW / 2.03 dBm
Transmit avg optical power (Channel 2) : 1.6486 mW / 2.17 dBm
Transmit avg optical power (Channel 3) : 1.6333 mW / 2.13 dBm
Transmit avg optical power (Channel 4) : 1.4387 mW / 1.58 dBm
Transmit avg optical power (Channel 5) : 0.0000 mW / -inf dBm
Transmit avg optical power (Channel 6) : 0.0000 mW / -inf dBm
Transmit avg optical power (Channel 7) : 0.0000 mW / -inf dBm
Transmit avg optical power (Channel 8) : 0.0000 mW / -inf dBm
Rcvr signal avg optical power (Channel 1) : 2.2489 mW / 3.52 dBm
Rcvr signal avg optical power (Channel 2) : 1.8629 mW / 2.70 dBm
Rcvr signal avg optical power (Channel 3) : 1.8427 mW / 2.65 dBm
Rcvr signal avg optical power (Channel 4) : 1.8215 mW / 2.60 dBm
Rcvr signal avg optical power (Channel 5) : 0.0000 mW / -inf dBm
Rcvr signal avg optical power (Channel 6) : 0.0000 mW / -inf dBm
Rcvr signal avg optical power (Channel 7) : 0.0000 mW / -inf dBm
Rcvr signal avg optical power (Channel 8) : 0.0000 mW / -inf dBm
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : On
Module temperature low warning : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Module voltage high warning : Off
Module voltage low warning : Off
Laser bias current high alarm (Chan 1) : Off
Laser bias current low alarm (Chan 1) : Off
Laser bias current high warning (Chan 1) : Off
Laser bias current low warning (Chan 1) : Off
Laser tx power high alarm (Channel 1) : Off
Laser tx power low alarm (Channel 1) : Off
Laser tx power high warning (Channel 1) : Off
Laser tx power low warning (Channel 1) : Off
Laser rx power high alarm (Channel 1) : Off
Laser rx power low alarm (Channel 1) : Off
Laser rx power high warning (Channel 1) : Off
Laser rx power low warning (Channel 1) : Off
Laser bias current high alarm (Chan 2) : Off
Laser bias current low alarm (Chan 2) : Off
Laser bias current high warning (Chan 2) : Off
Laser bias current low warning (Chan 2) : Off
Laser tx power high alarm (Channel 2) : Off
Laser tx power low alarm (Channel 2) : Off
Laser tx power high warning (Channel 2) : Off
Laser tx power low warning (Channel 2) : Off
Laser rx power high alarm (Channel 2) : Off
Laser rx power low alarm (Channel 2) : Off
Laser rx power high warning (Channel 2) : Off
Laser rx power low warning (Channel 2) : Off
Laser bias current high alarm (Chan 3) : Off
Laser bias current low alarm (Chan 3) : Off
Laser bias current high warning (Chan 3) : Off
Laser bias current low warning (Chan 3) : Off
Laser tx power high alarm (Channel 3) : Off
Laser tx power low alarm (Channel 3) : Off
Laser tx power high warning (Channel 3) : Off
Laser tx power low warning (Channel 3) : Off
Laser rx power high alarm (Channel 3) : Off
Laser rx power low alarm (Channel 3) : Off
Laser rx power high warning (Channel 3) : Off
Laser rx power low warning (Channel 3) : Off
Laser bias current high alarm (Chan 4) : Off
Laser bias current low alarm (Chan 4) : Off
Laser bias current high warning (Chan 4) : Off
Laser bias current low warning (Chan 4) : Off
Laser tx power high alarm (Channel 4) : Off
Laser tx power low alarm (Channel 4) : Off
Laser tx power high warning (Channel 4) : Off
Laser tx power low warning (Channel 4) : Off
Laser rx power high alarm (Channel 4) : Off
Laser rx power low alarm (Channel 4) : Off
Laser rx power high warning (Channel 4) : Off
Laser rx power low warning (Channel 4) : Off
Laser bias current high alarm (Chan 5) : Off
Laser bias current low alarm (Chan 5) : Off
Laser bias current high warning (Chan 5) : Off
Laser bias current low warning (Chan 5) : Off
Laser tx power high alarm (Channel 5) : Off
Laser tx power low alarm (Channel 5) : Off
Laser tx power high warning (Channel 5) : Off
Laser tx power low warning (Channel 5) : Off
Laser rx power high alarm (Channel 5) : Off
Laser rx power low alarm (Channel 5) : Off
Laser rx power high warning (Channel 5) : Off
Laser rx power low warning (Channel 5) : Off
Laser bias current high alarm (Chan 6) : Off
Laser bias current low alarm (Chan 6) : Off
Laser bias current high warning (Chan 6) : Off
Laser bias current low warning (Chan 6) : Off
Laser tx power high alarm (Channel 6) : Off
Laser tx power low alarm (Channel 6) : Off
Laser tx power high warning (Channel 6) : Off
Laser tx power low warning (Channel 6) : Off
Laser rx power high alarm (Channel 6) : Off
Laser rx power low alarm (Channel 6) : Off
Laser rx power high warning (Channel 6) : Off
Laser rx power low warning (Channel 6) : Off
Laser bias current high alarm (Chan 7) : Off
Laser bias current low alarm (Chan 7) : Off
Laser bias current high warning (Chan 7) : Off
Laser bias current low warning (Chan 7) : Off
Laser tx power high alarm (Channel 7) : Off
Laser tx power low alarm (Channel 7) : Off
Laser tx power high warning (Channel 7) : Off
Laser tx power low warning (Channel 7) : Off
Laser rx power high alarm (Channel 7) : Off
Laser rx power low alarm (Channel 7) : Off
Laser rx power high warning (Channel 7) : Off
Laser rx power low warning (Channel 7) : Off
Laser bias current high alarm (Chan 8) : Off
Laser bias current low alarm (Chan 8) : Off
Laser bias current high warning (Chan 8) : Off
Laser bias current low warning (Chan 8) : Off
Laser tx power high alarm (Channel 8) : Off
Laser tx power low alarm (Channel 8) : Off
Laser tx power high warning (Channel 8) : Off
Laser tx power low warning (Channel 8) : Off
Laser rx power high alarm (Channel 8) : Off
Laser rx power low alarm (Channel 8) : Off
Laser rx power high warning (Channel 8) : Off
Laser rx power low warning (Channel 8) : Off
Laser bias current high alarm threshold : 130.000 mA
Laser bias current low alarm threshold : 10.000 mA
Laser bias current high warning threshold : 125.000 mA
Laser bias current low warning threshold : 15.000 mA
Laser output power high alarm threshold : 3.5481 mW / 5.50 dBm
Laser output power low alarm threshold : 0.4074 mW / -3.90 dBm
Laser output power high warning threshold : 2.8184 mW / 4.50 dBm
Laser output power low warning threshold : 0.5129 mW / -2.90 dBm
Module temperature high alarm threshold : 75.00 degrees C / 167.00
degrees F
Module temperature low alarm threshold : -5.00 degrees C / 23.00
degrees F
Module temperature high warning threshold : 70.00 degrees C / 158.00
degrees F
Module temperature low warning threshold : 0.00 degrees C / 32.00 degrees F
Module voltage high alarm threshold : 3.6300 V
Module voltage low alarm threshold : 3.0500 V
Module voltage high warning threshold : 3.4650 V
Module voltage low warning threshold : 3.1350 V
Laser rx power high alarm threshold : 3.5481 mW / 5.50 dBm
Laser rx power low alarm threshold : 0.1288 mW / -8.90 dBm
Laser rx power high warning threshold : 2.8184 mW / 4.50 dBm
Laser rx power low warning threshold : 0.2042 mW / -6.90 dBm
Now the output rendered into json i.e. for ethtool --json -m <iface>
[ {
"identifier": 11,
"identifier_description": "QSFP28",
"power_class": 5,
"max_power" : 10.00,
"max_power_units" : "W",
"connector" : 12,
"connector_description" : "MPO Parallel Optic",
"cable_assembly_length" : 0.00,
"cable_assembly_length_units" : "m",
"tx_cdr_bypass_control" : false,
"rx_cdr_bypass_control" : false,
"tx_cdr" : true,
"rx_cdr" : true,
"transmitter_technology" : 6,
"transmitter_technology_description" : "1310 nm EML",
"laser_wavelength" : 1311.000,
"laser_wavelength_units" : "nm",
"laser_wavelength_tolerance" : 6.500,
"laser_wavelength_tolerance_units" : "nm",
"length_smf" : 2.00,
"length_smf_units" : "km",
"length_om5" : 0,
"length_om4" : 0,
"length_om3" : 0,
"length_om2" : 0,
"length_om_units" : "m",
"vendor_name" : [65, 114, 105, 115, 116, 97, 32, 78, 101, 116, 119,
111, 114, 107, 115, 32],
"vendor_oui" : [0, 28, 115],
"vendor_pn" : [81, 68, 68, 45, 52, 48, 48, 71, 45, 88, 68, 82, 52],
"vendor_rev" : [4, 1],
"vendor_sn" : [88, 75, 84, 50, 52, 50, 50, 49, 49, 52, 56, 49],
"date_code" : [50, 52, 48, 53, 51, 49],
"revision_compliance" : 48,
"rx_loss_of_signal" : [false, false, false, false, false, false,
false, false],
"tx_loss_of_signal" : [false, false, false, false, false, false,
false, false],
"rx_loss_of_lock" : [false, false, false, false, false, false,
false, false],
"tx_loss_of_lock" : [false, false, false, false, false, false,
false, false],
"tx_fault" : [false, false, false, false, false, false, false, false],
"module_state" : 3,
"module_state_description" : "ModuleReady",
"low_pwr_allow_request_hw": true,
"low_pwr_request_sw": false,
"module_temperature" : 70.49,
"module_temperature_units" : "C",
"module_voltage" : 3.2186,
"module_voltage_units" : "V",
"laser_tx_bias_current" : [83.806, 81.878, 72.900, 110.100, 0, 0,
0, 0],
"laser_tx_bias_current_units" : "mA",
"transmit_avg_optical_power" : [1.5975, 1.6486, 1.6333, 1.4387, 0,
0, 0, 0],
"transmit_avg_optical_power_units" : "mW",
"rcvr_signal_avg_optical_power" : [2.2489, 1.8629, 1.8427, 1.8215,
0, 0, 0, 0],
"rcvr_signal_avg_optical_power_units" : "mW",
"module_temperature_high_alarm" : false,
"module_temperature_low_alarm" : false,
"module_temperature_high_warning" : true,
"module_temperature_low_warning" : false,
"module_voltage_high_alarm" : false,
"module_voltage_low_alarm" : false,
"module_voltage_high_warning" : false,
"module_voltage_low_warning" : false,
"lazer_bias_current_high_alarm" : [false, false, false, false,
false, false, false, false],
"lazer_bias_current_low_alarm" : [false, false, false, false,
false, false, false, false],
"lazer_bias_current_high_warning" : [false, false, false, false,
false, false, false, false],
"lazer_bias_current_low_warning" : [false, false, false, false,
false, false, false, false],
"lazer_tx_power_high_alarm" : [false, false, false, false, false,
false, false, false],
"lazer_tx_power_low_alarm" : [false, false, false, false, false,
false, false, false],
"lazer_tx_power_high_warning" : [false, false, false, false, false,
false, false, false],
"lazer_tx_power_low_warning" : [false, false, false, false, false,
false, false, false],
"lazer_rx_power_high_alarm" : [false, false, false, false, false,
false, false, false],
"lazer_rx_power_low_alarm" : [false, false, false, false, false,
false, false, false],
"lazer_rx_power_high_warning" : [false, false, false, false, false,
false, false, false],
"lazer_rx_power_low_warning" : [false, false, false, false, false,
false, false, false],
"lazer_bias_current_high_alarm_threshold" : 130.000,
"lazer_bias_current_low_alarm_threshold" : 10.000,
"lazer_bias_current_high_warning_threshold" : 125.000,
"lazer_bias_current_low_warning_threshold" : 15.000,
"lazer_bias_current_alarm_warning_units" : "mA",
"lazer_output_power_high_alarm_threshold" : 3.5481,
"lazer_output_power_low_alarm_threshold" : 0.4074,
"lazer_output_power_high_warning_threshold" : 2.8184,
"lazer_output_power_low_warning_threshold" : 0.5129,
"lazer_output_power_warning_alarm_units" : "mW",
"module_temperature_high_alarm_threshold" : 75.00,
"module_temperature_low_alarm_threshold" : -5.00,
"module_temperature_high_warning_threshold" : 70.00,
"module_temperature_low_warning_threshold" : 0.00,
"module_temperature_warning_alarm_units" : "C",
"module_voltage_high_alarm_threshold" : 3.6300,
"module_voltage_low_alarm_threshold" : 3.0500,
"module_voltage_high_warning_threshold" : 3.4650,
"module_voltage_low_warning_threshold" : 3.1350,
"module_voltage_warning_alarm_units" : "V",
"lazer_rx_power_high_alarm_threshold" : 3.5481,
"lazer_rx_power_low_alarm_threshold" : 0.1288,
"lazer_rx_power_high_warning_threshold" : 2.8184,
"lazer_rx_power_low_warning_threshold" : 0.2042,
"lazer_rx_power_warning_alarm_units" : "mW",
} ]
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