22 Driver information can be obtained using ethtool and lspci.
90 ethtool  section in Additional Features and Configurations
92 The driver utilizes the ethtool interface for driver configuration and
93 diagnostics, as well as displaying statistical information. The latest ethtool
95 https://kernel.org/pub/software/network/ethtool/
97 NOTE: The rx_bytes value of ethtool does not match the rx_bytes value of
101 rx_bytes as "X", then ethtool (hardware statistics) will display rx_bytes as
104 ethtool reset
115 These are mapped to ethtool reset flags as follow:
119   # ethtool --reset <ethX> irq dma filter offload
123   # ethtool --reset <ethX> irq-shared dma-shared filter-shared offload-shared \
128   # ethtool --reset <ethX> irq-shared dma-shared filter-shared offload-shared \
133   # ethtool --reset <repr> irq dma filter offload
246 two-byte pattern and offset by using the ethtool user-def and mask fields. Only
255 characteristics. They are enabled through ethtool's ntuple interface. To enable
258   # ethtool -K <ethX> ntuple <off|on>
266   # ethtool -u <ethX>
270   # ethtool -U <ethX> flow-type <type> src-ip <ip> [m <ip_mask>] dst-ip <ip>
288   # ethtool -U <ethX> delete <N>
297   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.10.1 dst-ip \
302   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.10.1 dst-ip \
307   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.10.1 dst-ip \
316   # ethtool -U enp130s0 flow-type tcp4 src-ip 192.168.0.1 dst-ip 192.168.0.5
321   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.0.0 m 0.255.255.255 dst-ip
329   # ethtool -U enp130s0 flow-type ip4 src-ip 192.168.0.1 src-port 5300 action 7
330   # ethtool -U enp130s0 flow-type ip4 src-ip 192.168.0.5 src-port 55 action 10
335   # ethtool -U enp130s0 flow-type ip4 src-ip 192.168.0.1 src-port 5300 action 7
336   # ethtool -U enp130s0 flow-type ip4 dst-ip 192.168.0.5 src-port 55 action 10
349 This flexible data is specified using the "user-def" field of the ethtool
399   # ethtool -N <ethX> rx-flow-hash <type> <option>
435 - aRFS requires that ntuple filtering is enabled via ethtool.
444 - aRFS and ethtool's ntuple interface both use the device's Flow Director. aRFS
451 1. Enable the Intel Ethernet Flow Director and ntuple filters using ethtool.
455    # ethtool -K <ethX> ntuple on
485 To disable aRFS using ethtool::
487   # ethtool -K <ethX> ntuple off
618 NOTE: By default, the ethtool private flag vf-true-promisc-support is set to
623   # ethtool --set-priv-flags <ethX> vf-true-promisc-support on
660   # ethtool --set-priv-flags <ethX> mdd-auto-reset-vf on|off
720 ethtool utility. For the latest version, download and install ethtool from the
723    https://kernel.org/pub/software/network/ethtool/
727   # ethtool <ethX>
771 - You can enable and disable the firmware-based LLDP Agent using an ethtool
786 Use ethtool to change FW-LLDP settings. The FW-LLDP setting is per port and
791   # ethtool --set-priv-flags <ethX> fw-lldp-agent on
795   # ethtool --set-priv-flags <ethX> fw-lldp-agent off
799   # ethtool --show-priv-flags <ethX>
808 Ethernet Flow Control (IEEE 802.3x) can be configured with ethtool to enable
818 Use ethtool to change the flow control settings.
822   # ethtool -A <ethX> rx <on|off> tx <on|off>
838   this issue, disable and reenable LFC using ethtool::
840    # ethtool -A <ethX> rx off tx off
841    # ethtool -A <ethX> rx on tx on
880     # ethtool -K <ethX> rxvlan off
911   # ethtool -k <ethX>
928   # ethtool -K <ethX> tx-udp-segmentation [off|on]
1106 descriptors for each Rx ring using ethtool.
1111     # ethtool -S <ethX> | grep "rx_dropped"
1114   the number of descriptors using 'ethtool -G'::
1116     # ethtool -G <ethX> rx <N>
1127 control for specific workloads, via ethtool, adjusting the number of
1132   # ethtool -C <ethX> adaptive-rx off adaptive-tx off
1142     # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs 80 tx-usecs 80
1147   using ethtool::
1149     # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs 0 tx-usecs 0
1159     # ethtool --per-queue <ethX> queue_mask 0xa --coalesce adaptive-rx off
1164     # ethtool --per-queue <ethX> queue_mask 0xa --show-coalesce
1172    independently of rx-usecs and tx-usecs in the same ethtool command, and is
1185     # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs-high 20
1201     # ethtool -L <virt_interface> rx <max> tx <max>