A sample output:

$ ethtool --json -m swp23
[ {
        "identifier": 24,
        "identifier_description": "QSFP-DD Double Density 8X Pluggable
Transceiver (INF-8628)",
        "power_class": 5,
        "max_power": 10,
        "connector": 40,
        "connector_description": "MPO 1x16",
        "cable_assembly_length": 0,
        "tx_cdr_bypass_control": false,
        "rx_cdr_bypass_control": false,
        "tx_cdr": true,
        "rx_cdr": true,
        "transmitter_technology": 0,
        "transmitter_technology_description": "850 nm VCSEL",
        "laser_wavelength": 850,
        "laser_wavelength_tolerance": 94.8,
        "length_(smf)": 0,
        "length_(om5)": 0,
        "length_(om4)": 100,
        "length_(om3)": 70,
        "length_(om2)": 0,
        "vendor_name": "FINISAR CORP.",
        "vendor_oui": [ 0,144,101 ],
        "vendor_pn": "FTCD8613E1PCM",
        "vendor_rev": "A0",
        "vendor_sn": "X6LBE6H",
        "date_code": "211229__",
        "revision_compliance": {
            "major": 4,
            "minor": 0
        },
        "rx_loss_of_signal": [
"Yes","Yes","Yes","Yes","Yes","Yes","Yes","Yes" ],
        "tx_loss_of_signal": false,
        "rx_loss_of_lock": false,
        "tx_loss_of_lock": false,
        "tx_fault": false,
        "module_state": 3,
        "module_state_description": "ModuleReady",
        "low_pwr_allow_request_hw": false,
        "low_pwr_request_sw": false,
        "module_temperature": 37.5273,
        "module_voltage": 3.3358,
        "laser_tx_bias_current": [ 0,0,0,0,0,0,0,0 ],
        "transmit_avg_optical_power": [
0.0001,0.0001,0.0001,0.0001,0.0001,0.0001,0.0001,0.0001 ],
        "rx_power": {
            "values": [
0.0001,0.0001,0.0001,0.0001,0.0001,0.0001,0.0001,0.0001 ],
            "type": "Rcvr signal avg optical power"
        },
        "module_temperature_high_alarm": false,
        "module_temperature_low_alarm": false,
        "module_temperature_high_warning": false,
        "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,
        "laser_bias_current_high_alarm": [
false,false,false,false,false,false,false,false ],
        "laser_bias_current_low_alarm": [
false,false,false,false,false,false,false,false ],
        "laser_bias_current_high_warning": [
false,false,false,false,false,false,false,false ],
        "laser_bias_current_low_warning": [
false,false,false,false,false,false,false,false ],
        "laser_tx_power_high_alarm": [
false,false,false,false,false,false,false,false ],
        "laser_tx_power_low_alarm": [
false,false,false,false,false,false,false,false ],
        "laser_tx_power_high_warning": [
false,false,false,false,false,false,false,false ],
        "laser_tx_power_low_warning": [
false,false,false,false,false,false,false,false ],
        "laser_rx_power_high_alarm": [
false,false,false,false,false,false,false,false ],
        "laser_rx_power_low_alarm": [
false,false,false,false,false,false,false,false ],
        "laser_rx_power_high_warning": [
false,false,false,false,false,false,false,false ],
        "laser_rx_power_low_warning": [
false,false,false,false,false,false,false,false ],
        "laser_bias_current": {
            "high_alarm_threshold": 13,
            "low_alarm_threshold": 3,
            "high_warning_threshold": 11,
            "low_warning_threshold": 5
        },
        "laser_output_power": {
            "high_alarm_threshold": 3.1623,
            "low_alarm_threshold": 0.1,
            "high_warning_threshold": 1.9953,
            "low_warning_threshold": 0.1585
        },
        "module_temperature": {
            "high_alarm_threshold": 75,
            "low_alarm_threshold": -5,
            "high_warning_threshold": 70,
            "low_warning_threshold": 0
        },
        "module_voltage": {
            "high_alarm_threshold": 3.465,
            "low_alarm_threshold": 3.135,
            "high_warning_threshold": 3.45,
            "low_warning_threshold": 3.15
        },
        "laser_rx_power": {
            "high_alarm_threshold": 3.1623,
            "low_alarm_threshold": 0.0398,
            "high_warning_threshold": 2.5119,
            "low_warning_threshold": 0.0794
        },
        "active_firmware_version": {
            "major": 2,
            "minor": 7
        },
        "inactive_firmware_version": {
            "major": 2,
            "minor": 7
        },
        "cdb_instances": 1,
        "cdb_background_mode": "Supported",
        "cdb_epl_pages": 0,
        "cdb_maximum_epl_rw_length": 128,
        "cdb_maximum_lpl_rw_length": 128,
        "cdb_trigger_method": "Single write"
    } ]

Signed-off-by: Danielle Ratson <redacted>
Reviewed-by: Amit Cohen <redacted>
---

Notes:
    v3:
    	* Reword commit message.

 cmis.c    | 6 ++++++
 ethtool.c | 1 +
 2 files changed, 7 insertions(+)

diff --git a/cmis.c b/cmis.c
index 267d088..305814c 100644
--- a/cmis.c
+++ b/cmis.c

@@ -1122,10 +1122,16 @@ int cmis_show_all_nl(struct cmd_context *ctx)
 	struct cmis_memory_map map = {};
 	int ret;
 
+	new_json_obj(ctx->json);
+	open_json_object(NULL);
+
 	ret = cmis_memory_map_init_pages(ctx, &map);
 	if (ret < 0)
 		return ret;
 	cmis_show_all_common(&map);
 
+	close_json_object();
+	delete_json_obj();
+
 	return 0;
 }

diff --git a/ethtool.c b/ethtool.c
index a1393bc..0b876e8 100644
--- a/ethtool.c
+++ b/ethtool.c

@@ -6050,6 +6050,7 @@ static const struct option args[] = {
 	},
 	{
 		.opts	= "-m|--dump-module-eeprom|--module-info",
+		.json	= true,
 		.func	= do_getmodule,
 		.nlfunc = nl_getmodule,
 		.help	= "Query/Decode Module EEPROM information and optical diagnostics if available",

-- 
2.47.0