pi@raspberrypi:~/verde $ ethtool -h
ethtool version 5.9
Usage:
        ethtool [ --debug MASK ][ --json ] DEVNAME	Display standard information about device
        ethtool [ --debug MASK ][ --json ] -s|--change DEVNAME	Change generic options
		[ speed %d ]
		[ duplex half|full ]
		[ port tp|aui|bnc|mii|fibre|da ]
		[ mdix auto|on|off ]
		[ autoneg on|off ]
		[ advertise %x[/%x] | mode on|off ... [--] ]
		[ phyad %d ]
		[ xcvr internal|external ]
		[ wol %d[/%d] | p|u|m|b|a|g|s|f|d... ]
		[ sopass %x:%x:%x:%x:%x:%x ]
		[ msglvl %d[/%d] | type on|off ... [--] ]
		[ master-slave master-preferred|slave-preferred|master-force|slave-force ]
        ethtool [ --debug MASK ][ --json ] -a|--show-pause DEVNAME	Show pause options
        ethtool [ --debug MASK ][ --json ] -A|--pause DEVNAME	Set pause options
		[ autoneg on|off ]
		[ rx on|off ]
		[ tx on|off ]
        ethtool [ --debug MASK ][ --json ] -c|--show-coalesce DEVNAME	Show coalesce options
        ethtool [ --debug MASK ][ --json ] -C|--coalesce DEVNAME	Set coalesce options
		[adaptive-rx on|off]
		[adaptive-tx on|off]
		[rx-usecs N]
		[rx-frames N]
		[rx-usecs-irq N]
		[rx-frames-irq N]
		[tx-usecs N]
		[tx-frames N]
		[tx-usecs-irq N]
		[tx-frames-irq N]
		[stats-block-usecs N]
		[pkt-rate-low N]
		[rx-usecs-low N]
		[rx-frames-low N]
		[tx-usecs-low N]
		[tx-frames-low N]
		[pkt-rate-high N]
		[rx-usecs-high N]
		[rx-frames-high N]
		[tx-usecs-high N]
		[tx-frames-high N]
		[sample-interval N]
        ethtool [ --debug MASK ][ --json ] -g|--show-ring DEVNAME	Query RX/TX ring parameters
        ethtool [ --debug MASK ][ --json ] -G|--set-ring DEVNAME	Set RX/TX ring parameters
		[ rx N ]
		[ rx-mini N ]
		[ rx-jumbo N ]
		[ tx N ]
        ethtool [ --debug MASK ][ --json ] -k|--show-features|--show-offload DEVNAME	Get state of protocol offload and other features
        ethtool [ --debug MASK ][ --json ] -K|--features|--offload DEVNAME	Set protocol offload and other features
		FEATURE on|off ...
        ethtool [ --debug MASK ][ --json ] -i|--driver DEVNAME	Show driver information
        ethtool [ --debug MASK ][ --json ] -d|--register-dump DEVNAME	Do a register dump
		[ raw on|off ]
		[ file FILENAME ]
        ethtool [ --debug MASK ][ --json ] -e|--eeprom-dump DEVNAME	Do a EEPROM dump
		[ raw on|off ]
		[ offset N ]
		[ length N ]
        ethtool [ --debug MASK ][ --json ] -E|--change-eeprom DEVNAME	Change bytes in device EEPROM
		[ magic N ]
		[ offset N ]
		[ length N ]
		[ value N ]
        ethtool [ --debug MASK ][ --json ] -r|--negotiate DEVNAME	Restart N-WAY negotiation
        ethtool [ --debug MASK ][ --json ] -p|--identify DEVNAME	Show visible port identification (e.g. blinking)
               [ TIME-IN-SECONDS ]
        ethtool [ --debug MASK ][ --json ] -t|--test DEVNAME	Execute adapter self test
               [ online | offline | external_lb ]
        ethtool [ --debug MASK ][ --json ] -S|--statistics DEVNAME	Show adapter statistics
        ethtool [ --debug MASK ][ --json ] --phy-statistics DEVNAME	Show phy statistics
        ethtool [ --debug MASK ][ --json ] -n|-u|--show-nfc|--show-ntuple DEVNAME	Show Rx network flow classification options or rules
		[ rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 [context %d] |
		  rule %d ]
        ethtool [ --debug MASK ][ --json ] -N|-U|--config-nfc|--config-ntuple DEVNAME	Configure Rx network flow classification options or rules
		rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r... [context %d] |
		flow-type ether|ip4|tcp4|udp4|sctp4|ah4|esp4|ip6|tcp6|udp6|ah6|esp6|sctp6
			[ src %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]
			[ dst %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]
			[ proto %d [m %x] ]
			[ src-ip IP-ADDRESS [m IP-ADDRESS] ]
			[ dst-ip IP-ADDRESS [m IP-ADDRESS] ]
			[ tos %d [m %x] ]
			[ tclass %d [m %x] ]
			[ l4proto %d [m %x] ]
			[ src-port %d [m %x] ]
			[ dst-port %d [m %x] ]
			[ spi %d [m %x] ]
			[ vlan-etype %x [m %x] ]
			[ vlan %x [m %x] ]
			[ user-def %x [m %x] ]
			[ dst-mac %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]
			[ action %d ] | [ vf %d queue %d ]
			[ context %d ]
			[ loc %d]] |
		delete %d
        ethtool [ --debug MASK ][ --json ] -T|--show-time-stamping DEVNAME	Show time stamping capabilities
        ethtool [ --debug MASK ][ --json ] -x|--show-rxfh-indir|--show-rxfh DEVNAME	Show Rx flow hash indirection table and/or RSS hash key
		[ context %d ]
        ethtool [ --debug MASK ][ --json ] -X|--set-rxfh-indir|--rxfh DEVNAME	Set Rx flow hash indirection table and/or RSS hash key
		[ context %d|new ]
		[ equal N | weight W0 W1 ... | default ]
		[ hkey %x:%x:%x:%x:%x:.... ]
		[ hfunc FUNC ]
		[ delete ]
        ethtool [ --debug MASK ][ --json ] -f|--flash DEVNAME	Flash firmware image from the specified file to a region on the device
               FILENAME [ REGION-NUMBER-TO-FLASH ]
        ethtool [ --debug MASK ][ --json ] -P|--show-permaddr DEVNAME	Show permanent hardware address
        ethtool [ --debug MASK ][ --json ] -w|--get-dump DEVNAME	Get dump flag, data
		[ data FILENAME ]
        ethtool [ --debug MASK ][ --json ] -W|--set-dump DEVNAME	Set dump flag of the device
		N
        ethtool [ --debug MASK ][ --json ] -l|--show-channels DEVNAME	Query Channels
        ethtool [ --debug MASK ][ --json ] -L|--set-channels DEVNAME	Set Channels
               [ rx N ]
               [ tx N ]
               [ other N ]
               [ combined N ]
        ethtool [ --debug MASK ][ --json ] --show-priv-flags DEVNAME	Query private flags
        ethtool [ --debug MASK ][ --json ] --set-priv-flags DEVNAME	Set private flags
		FLAG on|off ...
        ethtool [ --debug MASK ][ --json ] -m|--dump-module-eeprom|--module-info DEVNAME	Query/Decode Module EEPROM information and optical diagnostics if available
		[ raw on|off ]
		[ hex on|off ]
		[ offset N ]
		[ length N ]
        ethtool [ --debug MASK ][ --json ] --show-eee DEVNAME	Show EEE settings
        ethtool [ --debug MASK ][ --json ] --set-eee DEVNAME	Set EEE settings
		[ eee on|off ]
		[ advertise %x ]
		[ tx-lpi on|off ]
		[ tx-timer %d ]
        ethtool [ --debug MASK ][ --json ] --set-phy-tunable DEVNAME	Set PHY tunable
		[ downshift on|off [count N] ]
		[ fast-link-down on|off [msecs N] ]
		[ energy-detect-power-down on|off [msecs N] ]
        ethtool [ --debug MASK ][ --json ] --get-phy-tunable DEVNAME	Get PHY tunable
		[ downshift ]
		[ fast-link-down ]
		[ energy-detect-power-down ]
        ethtool [ --debug MASK ][ --json ] --get-tunable DEVNAME	Get tunable
		[ rx-copybreak ]
		[ tx-copybreak ]
		[ pfc-precention-tout ]
        ethtool [ --debug MASK ][ --json ] --set-tunable DEVNAME	Set tunable
		[ rx-copybreak N]
		[ tx-copybreak N]
		[ pfc-precention-tout N]
        ethtool [ --debug MASK ][ --json ] --reset DEVNAME	Reset components
		[ flags %x ]
		[ mgmt ]
		[ mgmt-shared ]
		[ irq ]
		[ irq-shared ]
		[ dma ]
		[ dma-shared ]
		[ filter ]
		[ filter-shared ]
		[ offload ]
		[ offload-shared ]
		[ mac ]
		[ mac-shared ]
		[ phy ]
		[ phy-shared ]
		[ ram ]
		[ ram-shared ]
		[ ap ]
		[ ap-shared ]
		[ dedicated ]
		[ all ]
        ethtool [ --debug MASK ][ --json ] --show-fec DEVNAME	Show FEC settings
        ethtool [ --debug MASK ][ --json ] --set-fec DEVNAME	Set FEC settings
		[ encoding auto|off|rs|baser|llrs [...]]
        ethtool [ --debug MASK ][ --json ] -Q|--per-queue DEVNAME	Apply per-queue command. 
The supported sub commands include --show-coalesce, --coalesce             [queue_mask %x] SUB_COMMAND
        ethtool [ --debug MASK ][ --json ] --cable-test DEVNAME	Perform a cable test
        ethtool [ --debug MASK ][ --json ] --cable-test-tdr DEVNAME	Print cable test time domain reflectrometery data
		[ first N ]
		[ last N ]
		[ step N ]
		[ pair N ]
        ethtool [ --debug MASK ][ --json ] --show-tunnels DEVNAME	Show NIC tunnel offload information
        ethtool [ --debug MASK ][ --json ] -h|--help 		Show this help
        ethtool [ --debug MASK ][ --json ] --version 		Show version number
        ethtool --monitor               Show kernel notifications
                ( [ --all ]
                  | -s | --change
                  | -s | --change
                  | -s | --change
                  | -s | --change
                  | -k | --show-features | --show-offload | -K | --features | --offload
                  | --show-priv-flags | --set-priv-flags
                  | -g | --show-ring | -G | --set-ring
                  | -l | --show-channels | -L | --set-channels
                  | -c | --show-coalesce | -C | --coalesce
                  | -a | --show-pause | -A | --pause
                  | --show-eee | --set-eee
                  | --cable-test
                  | --cable-test-tdr )
                [ DEVNAME | * ]
Not all options support JSON output
pi@raspberrypi:~/verde $ ethtool --monitor
listening...
^C
pi@raspberrypi:~/verde $ ethtool --identify
ethtool: bad command line argument(s)
For more information run ethtool -h
pi@raspberrypi:~/verde $ ethtool --identify eth0
Cannot identify NIC: Operation not permitted
pi@raspberrypi:~/verde $ sudo ethtool --identify eth0
Cannot identify NIC: Operation not supported
pi@raspberrypi:~/verde $ ethtool eth0
Settings for eth0:
	Supported ports: [ TP	 MII ]
	Supported link modes:   10baseT/Half 10baseT/Full
	                        100baseT/Half 100baseT/Full
	                        1000baseT/Half 1000baseT/Full
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  10baseT/Half 10baseT/Full
	                        100baseT/Half 100baseT/Full
	                        1000baseT/Half 1000baseT/Full
	Advertised pause frame use: Symmetric Receive-only
	Advertised auto-negotiation: Yes
	Advertised FEC modes: Not reported
	Link partner advertised link modes:  10baseT/Half 10baseT/Full
	                                     100baseT/Half 100baseT/Full
	                                     1000baseT/Half 1000baseT/Full
	Link partner advertised pause frame use: Symmetric Receive-only
	Link partner advertised auto-negotiation: Yes
	Link partner advertised FEC modes: Not reported
	Speed: 1000Mb/s
	Duplex: Full
	Auto-negotiation: on
	master-slave cfg: preferred slave
	master-slave status: slave
	Port: Twisted Pair
	PHYAD: 1
	Transceiver: external
	MDI-X: Unknown
netlink error: Operation not permitted
        Current message level: 0x00000007 (7)
                               drv probe link
	Link detected: yes
pi@raspberrypi:~/verde $ ethtool --statistics eth0
NIC statistics:
     rx_packets: 7946624
     tx_packets: 2872173
     rx_bytes: 10999615528
     tx_bytes: 160507787
     rx_errors: 0
     tx_errors: 0
     rx_dropped: 0
     tx_dropped: 0
     multicast: 0
     rx_64_octets: 3749
     rx_65_127_oct: 202928
     rx_128_255_oct: 49
     rx_256_511_oct: 0
     rx_512_1023_oct: 644976
     rx_1024_1518_oct: 7094922
     rx_vlan_1519_1522_oct: 0
     rx_1522_2047_oct: 0
     rx_2048_4095_oct: 0
     rx_4096_9216_oct: 0
     rx_pkts: 7946624
     rx_bytes: 2441467432
     rx_multicast: 0
     rx_broadcast: 1
     rx_fcs: 0
     rx_control: 0
     rx_pause: 0
     rx_unknown: 0
     rx_align: 0
     rx_outrange: 0
     rx_code: 0
     rx_carrier: 0
     rx_oversize: 0
     rx_jabber: 0
     rx_mtu_err: 0
     rx_good_pkts: 7946624
     rx_unicast: 7946623
     rx_ppp: 0
     rx_crc: 0
     tx_64_octets: 2704822
     tx_65_127_oct: 165428
     tx_128_255_oct: 63
     tx_256_511_oct: 3
     tx_512_1023_oct: 83
     tx_1024_1518_oct: 1774
     tx_vlan_1519_1522_oct: 0
     tx_1522_2047_oct: 0
     tx_2048_4095_oct: 0
     tx_4096_9216_oct: 0
     tx_pkts: 2872173
     tx_multicast: 39
     tx_broadcast: 1052
     tx_pause: 0
     tx_control: 0
     tx_fcs_err: 0
     tx_oversize: 0
     tx_defer: 0
     tx_excess_defer: 0
     tx_single_col: 0
     tx_multi_col: 0
     tx_late_col: 0
     tx_excess_col: 0
     tx_frags: 0
     tx_total_col: 0
     tx_jabber: 0
     tx_bytes: 188237811
     tx_good_pkts: 2872173
     tx_unicast: 2871082
     rx_runt_pkts: 0
     rx_runt_valid_fcs: 0
     rx_runt_inval_fcs_align: 0
     rx_runt_bytes: 0
     rbuf_ovflow_cnt: 0
     rbuf_err_cnt: 0
     mdf_err_cnt: 0
     alloc_rx_buff_failed: 0
     rx_dma_failed: 0
     tx_dma_failed: 0
     tx_realloc_tsb: 0
     tx_realloc_tsb_failed: 0
     txq0_packets: 700793
     txq0_bytes: 38468167
     rxq0_bytes: 0
     rxq0_packets: 0
     rxq0_errors: 0
     rxq0_dropped: 0
     txq1_packets: 30501
     txq1_bytes: 2169558
     rxq1_bytes: 0
     rxq1_packets: 0
     rxq1_errors: 0
     rxq1_dropped: 0
     txq2_packets: 38158
     txq2_bytes: 2670822
     rxq2_bytes: 0
     rxq2_packets: 0
     rxq2_errors: 0
     rxq2_dropped: 0
     txq3_packets: 2068011
     txq3_bytes: 114760518
     rxq3_bytes: 0
     rxq3_packets: 0
     rxq3_errors: 0
     rxq3_dropped: 0
     txq16_packets: 34710
     txq16_bytes: 2438722
     rxq16_bytes: 10999615528
     rxq16_packets: 7946624
     rxq16_errors: 0
     rxq16_dropped: 0
pi@raspberrypi:~/verde $ ethtool --driver eth0
driver: bcmgenet
version: 5.15.76-v8+
firmware-version: 
expansion-rom-version: 
bus-info: 
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
pi@raspberrypi:~/verde $ ethtool --monitor eth0
listening...
^C
pi@raspberrypi:~/verde $ ethtool --monitor --all eth0
listening...
^C
pi@raspberrypi:~/verde $ ethtool --cable-test-tdr eth0
netlink error: Operation not permitted
pi@raspberrypi:~/verde $ sudo ethtool --cable-test-tdr eth0
netlink error: PHY driver does not support cable test TDR
netlink error: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --cable-test eth0
netlink error: PHY driver does not support cable testing
netlink error: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --show-fec eth0
Cannot get FEC settings: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --show-eee eth0
EEE settings for eth0:
	EEE status: enabled - inactive
	Tx LPI: disabled
	Supported EEE link modes:  100baseT/Full
	                           1000baseT/Full
	Advertised EEE link modes:  100baseT/Full
	                            1000baseT/Full
	Link partner advertised EEE link modes:  Not reported
pi@raspberrypi:~/verde $ sudo ethtool --show-channels eth0
netlink error: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --show-time-stamping eth0
Time stamping parameters for eth0:
Capabilities:
	software-transmit
	software-receive
	software-system-clock
PTP Hardware Clock: none
Hardware Transmit Timestamp Modes: none
Hardware Receive Filter Modes: none
pi@raspberrypi:~/verde $ sudo ethtool --driver eth0
driver: bcmgenet
version: 5.15.76-v8+
firmware-version: 
expansion-rom-version: 
bus-info: 
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
pi@raspberrypi:~/verde $ sudo ethtool --show-pause eth0
netlink error: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --show-coalesce eth0
Coalesce parameters for eth0:
Adaptive RX: off  TX: n/a
stats-block-usecs: n/a
sample-interval: n/a
pkt-rate-low: n/a
pkt-rate-high: n/a

rx-usecs: 57
rx-frames: 1
rx-usecs-irq: n/a
rx-frames-irq: n/a

tx-usecs: n/a
tx-frames: 10
tx-usecs-irq: n/a
tx-frames-irq: n/a

rx-usecs-low: n/a
rx-frame-low: n/a
tx-usecs-low: n/a
tx-frame-low: n/a

rx-usecs-high: n/a
rx-frame-high: n/a
tx-usecs-high: n/a
tx-frame-high: n/a

pi@raspberrypi:~/verde $ sudo ethtool --identify eth0
Cannot identify NIC: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --get-dump eth0
Can not get dump level
: Operation not supported
pi@raspberrypi:~/verde $ sudo ethtool --eeprom-dump eth0
Cannot get EEPROM data: Operation not supported
pi@raspberrypi:~/verde $