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
215 two-byte pattern and offset by using the ethtool user-def and mask fields. Only
224 characteristics. They are enabled through ethtool's ntuple interface. To enable
227   # ethtool -K <ethX> ntuple <off|on>
235   # ethtool -u <ethX>
239   # ethtool -U <ethX> flow-type <type> src-ip <ip> [m <ip_mask>] dst-ip <ip>
257   # ethtool -U <ethX> delete <N>
266   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.10.1 dst-ip \
271   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.10.1 dst-ip \
276   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.10.1 dst-ip \
285   # ethtool -U enp130s0 flow-type tcp4 src-ip 192.168.0.1 dst-ip 192.168.0.5
290   # ethtool -U <ethX> flow-type tcp4 src-ip 192.168.0.0 m 0.255.255.255 dst-ip
298   # ethtool -U enp130s0 flow-type ip4 src-ip 192.168.0.1 src-port 5300 action 7
299   # ethtool -U enp130s0 flow-type ip4 src-ip 192.168.0.5 src-port 55 action 10
304   # ethtool -U enp130s0 flow-type ip4 src-ip 192.168.0.1 src-port 5300 action 7
305   # ethtool -U enp130s0 flow-type ip4 dst-ip 192.168.0.5 src-port 55 action 10
318 This flexible data is specified using the "user-def" field of the ethtool
368   # ethtool -N <ethX> rx-flow-hash <type> <option>
391 - aRFS requires that ntuple filtering is enabled via ethtool.
400 - aRFS and ethtool's ntuple interface both use the device's Flow Director. aRFS
407 1. Enable the Intel Ethernet Flow Director and ntuple filters using ethtool.
411    # ethtool -K <ethX> ntuple on
441 To disable aRFS using ethtool::
443   # ethtool -K <ethX> ntuple off
574 NOTE: By default, the ethtool private flag vf-true-promisc-support is set to
579   # ethtool --set-priv-flags <ethX> vf-true-promisc-support on
616   # ethtool --set-priv-flags <ethX> mdd-auto-reset-vf on|off
676 ethtool utility. For the latest version, download and install ethtool from the
679    https://kernel.org/pub/software/network/ethtool/
683   # ethtool <ethX>
727 - You can enable and disable the firmware-based LLDP Agent using an ethtool
742 Use ethtool to change FW-LLDP settings. The FW-LLDP setting is per port and
747   # ethtool --set-priv-flags <ethX> fw-lldp-agent on
751   # ethtool --set-priv-flags <ethX> fw-lldp-agent off
755   # ethtool --show-priv-flags <ethX>
764 Ethernet Flow Control (IEEE 802.3x) can be configured with ethtool to enable
774 Use ethtool to change the flow control settings.
778   # ethtool -A <ethX> rx <on|off> tx <on|off>
794   this issue, disable and reenable LFC using ethtool::
796    # ethtool -A <ethX> rx off tx off
797    # ethtool -A <ethX> rx on tx on
836     # ethtool -K <ethX> rxvlan off
867   # ethtool -k <ethX>
884   # ethtool -K <ethX> tx-udp-segmentation [off|on]
908 descriptors for each Rx ring using ethtool.
913     # ethtool -S <ethX> | grep "rx_dropped"
916   the number of descriptors using 'ethtool -G'::
918     # ethtool -G <ethX> rx <N>
929 control for specific workloads, via ethtool, adjusting the number of
934   # ethtool -C <ethX> adaptive-rx off adaptive-tx off
944     # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs 80 tx-usecs 80
949   using ethtool::
951     # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs 0 tx-usecs 0
961     # ethtool --per-queue <ethX> queue_mask 0xa --coalesce adaptive-rx off
966     # ethtool --per-queue <ethX> queue_mask 0xa --show-coalesce
974    independently of rx-usecs and tx-usecs in the same ethtool command, and is
987     # ethtool -C <ethX> adaptive-rx off adaptive-tx off rx-usecs-high 20
1003     # ethtool -L <virt_interface> rx <max> tx <max>