Provided by: ethtool_5.19-1_amd64
ethtool - query or control network driver and hardware settings
ethtool devname ethtool -h|--help ethtool --version ethtool [--debug N] args ethtool [--json] args ethtool [-I | --include-statistics] args ethtool --monitor [ command ] [ devname ] ethtool -a|--show-pause devname ethtool -A|--pause devname [autoneg on|off] [rx on|off] [tx on|off] ethtool -c|--show-coalesce devname ethtool -C|--coalesce devname [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] [cqe-mode-rx on|off] [cqe-mode-tx on|off] ethtool -g|--show-ring devname ethtool -G|--set-ring devname [rx N] [rx-mini N] [rx-jumbo N] [tx N] [rx-buf-len N] [cqe-size N] [tx-push N] ethtool -i|--driver devname ethtool -d|--register-dump devname [raw on|off] [hex on|off] [file name] ethtool -e|--eeprom-dump devname [raw on|off] [offset N] [length N] ethtool -E|--change-eeprom devname [magic N] [offset N] [length N] [value N] ethtool -k|--show-features|--show-offload devname ethtool -K|--features|--offload devname feature on|off ... ethtool -p|--identify devname [N] ethtool -P|--show-permaddr devname ethtool -r|--negotiate devname ethtool -S|--statistics devname [--all-groups|--groups [eth-phy] [eth-mac] [eth-ctrl] ] ethtool --phy-statistics devname ethtool -t|--test devname [offline|online|external_lb] ethtool -s devname [speed N] [lanes N] [duplex half|full] [port tp|aui|bnc|mii] [mdix auto|on|off] [autoneg on|off] [advertise N[/M] | advertise mode on|off ...] [phyad N] [xcvr internal|external] [wol N[/M] | wol p|u|m|b|a|g|s|f|d...] [sopass xx:yy:zz:aa:bb:cc] [master-slave preferred-master|preferred-slave|forced- master|forced-slave] [msglvl N[/M] | msglvl type on|off ...] ethtool -n|-u|--show-nfc|--show-ntuple devname [ rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 | rule N ] ethtool -N|-U|--config-nfc|--config-ntuple devname rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r... | flow-type ether|ip4|tcp4|udp4|sctp4|ah4|esp4|ip6|tcp6|udp6|ah6|esp6|sctp6 [src xx:yy:zz:aa:bb:cc [m xx:yy:zz:aa:bb:cc]] [dst xx:yy:zz:aa:bb:cc [m xx:yy:zz:aa:bb:cc]] [proto N [m N]] [src-ip ip- address [m ip-address]] [dst-ip ip-address [m ip-address]] [tos N [m N]] [tclass N [m N]] [l4proto N [m N]] [src-port N [m N]] [dst-port N [m N]] [spi N [m N]] [l4data N [m N]] [vlan-etype N [m N]] [vlan N [m N]] [user-def N [m N]] [dst-mac xx:yy:zz:aa:bb:cc [m xx:yy:zz:aa:bb:cc]] [action N] [context N] [loc N] | delete N ethtool -w|--get-dump devname [data filename] ethtool -W|--set-dump devname N ethtool -T|--show-time-stamping devname ethtool -x|--show-rxfh-indir|--show-rxfh devname ethtool -X|--set-rxfh-indir|--rxfh devname [hkey xx:yy:zz:aa:bb:cc:...] [start N] [ equal N | weight W0 W1 ... | default ] [hfunc FUNC] [context CTX | new] [delete] ethtool -f|--flash devname file [N] ethtool -l|--show-channels devname ethtool -L|--set-channels devname [rx N] [tx N] [other N] [combined N] ethtool -m|--dump-module-eeprom|--module-info devname [raw on|off] [hex on|off] [offset N] [length N] [page N] [bank N] [i2c N] ethtool --show-priv-flags devname ethtool --set-priv-flags devname flag on|off ... ethtool --show-eee devname ethtool --set-eee devname [eee on|off] [tx-lpi on|off] [tx-timer N] [advertise N] ethtool --set-phy-tunable devname [ downshift on|off [count N] ] [ fast-link-down on|off [msecs N] ] [ energy-detect-power-down on|off [msecs N] ] ethtool --get-phy-tunable devname [downshift] [fast-link-down] [energy-detect-power-down] ethtool --get-tunable devname [rx-copybreak] [tx-copybreak] [tx-buf-size] [pfc-prevention- tout] ethtool --set-tunable devname [rx-copybreak N] [tx-copybreak N] [tx-buf-size N] [pfc-prevention-tout N] ethtool --reset devname [flags N] [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 --show-fec devname ethtool --set-fec devname encoding auto|off|rs|baser|llrs [...] ethtool -Q|--per-queue devname [queue_mask %x] sub_command ... . ethtool --cable-test devname ethtool --cable-test-tdr devname [first N] [last N] [step N] [pair N] ethtool --show-tunnels devname ethtool --show-module devname ethtool --set-module devname [power-mode-policy high|auto]
ethtool is used to query and control network device driver and hardware settings, particularly for wired Ethernet devices. devname is the name of the network device on which ethtool should operate.
Not supported (in part or whole) on all network drivers.
ethtool was written by David Miller. Modifications by Jeff Garzik, Tim Hockin, Jakub Jelinek, Andre Majorel, Eli Kupermann, Scott Feldman, Andi Kleen, Alexander Duyck, Sucheta Chakraborty, Jesse Brandeburg, Ben Hutchings, Scott Branden.
ethtool is available from ⟨http://www.kernel.org/pub/software/network/ethtool/⟩