NAME

       devlink-dev - devlink device configuration

SYNOPSIS

       devlink [ OPTIONS ] dev  { COMMAND | help }

       OPTIONS := { -V[ersion] | -n[no-nice-names] }

       devlink dev show [ DEV ]

       devlink dev help

       devlink dev eswitch set DEV [ mode { legacy | switchdev } ] [ inline-mode { none | link |
               network | transport } ] [ encap-mode { none | basic } ]

       devlink dev eswitch show DEV

       devlink dev param set DEV name PARAMETER value VALUE cmode { runtime | driverinit |
               permanent }

       devlink dev param show [ DEV name PARAMETER ]

       devlink dev reload DEV [ netns { PID | NAME | ID } ] [ action { driver_reinit |
               fw_activate } ] [ limit no_reset ]

       devlink dev info [ DEV ]

       devlink dev flash DEV file PATH [ target ID ]

       devlink dev selftests show [ DEV ]

       devlink dev selftests run DEV [ id ID...  ]

DESCRIPTION

   devlink dev show - display devlink device attributes
       DEV - specifies the devlink device to show.  If this argument is omitted all devices are
       listed.

           Format is:
             BUS_NAME/BUS_ADDRESS

   devlink dev eswitch show - display devlink device eswitch attributes
   devlink dev eswitch set - sets devlink device eswitch attributes
       mode { legacy | switchdev }
              Set eswitch mode

              legacy - Legacy SRIOV

              switchdev - SRIOV switchdev offloads

       inline-mode { none | link | network | transport }
              Some HWs need the VF driver to put part of the packet headers on the TX descriptor
              so the e-switch can do proper matching and steering.

              none - None

              link - L2 mode

              network - L3 mode

              transport - L4 mode

       encap-mode { none | basic }
              Set eswitch encapsulation support

              none - Disable encapsulation support

              basic - Enable encapsulation support

   devlink dev param set - set new value to devlink device configuration parameter
       name PARAMETER
              Specify parameter name to set.

       value VALUE
              New value to set.

       cmode { runtime | driverinit | permanent }
              Configuration mode in which the new value is set.

              runtime - Set new value while driver is running. This configuration mode doesn't
              require any reset to apply the new value.

              driverinit - Set new value which will be applied during driver initialization. This
              configuration mode requires restart driver by devlink reload command to apply the
              new value.

              permanent - New value is written to device's non-volatile memory. This
              configuration mode requires hard reset to apply the new value.

   devlink dev param show - display devlink device supported configuration parameters attributes
       name PARAMETER Specify parameter name to show.  If this argument is omitted all parameters
       supported by devlink devices are listed.

   devlink dev reload - perform hot reload of the driver.
       DEV - Specifies the devlink device to reload.

       netns { PID | NAME | ID } - Specifies the network namespace to reload into, either by pid,
       name or id.

       action { driver_reinit | fw_activate } - Specifies the reload action required.  If this
       argument is omitted driver_reinit action will be used.  Note that even though user asks
       for a specific action, the driver implementation might require to perform another action
       alongside with it. For example, some driver do not support driver reinitialization being
       performed without fw activation. Therefore, the devlink reload command returns the list of
       actions which were actrually performed.

       driver_reinit - Driver entities re-initialization, applying devlink-param and devlink-
       resource values.

       fw_activate - Activates new firmware if such image is stored and pending activation. If no
       limitation specified this action may involve firmware reset. If no new image pending this
       action will reload current firmware image.

       limit no_reset - Specifies limitation on reload action.  If this argument is omitted limit
       is unspecified and the reload action is not limited. In such case driver implementation
       may include reset or downtime as needed to perform the actions.

       no_reset - No reset allowed, no down time allowed, no link flap and no configuration is
       lost.

   devlink dev info - display device information.
       Display device information provided by the driver. This command can be used to query
       versions of the hardware components or device components which can't be updated ( fixed )
       as well as device firmware which can be updated. For firmware components running displays
       the versions of firmware currently loaded into the device, while stored reports the
       versions in device's flash.  Running and stored versions may differ after flash has been
       updated, but before reboot.

       DEV - specifies the devlink device to show.  If this argument is omitted all devices are
       listed.

   devlink dev flash - write device's non-volatile memory.
       DEV - specifies the devlink device to write to.

       file PATH - Path to the file which will be written into device's flash. The path needs to
       be relative to one of the directories searched by the kernel firmware loader, such as
       /lib/firmware.

       component NAME - If device stores multiple firmware images in non-volatile memory, this
       parameter may be used to indicate which firmware image should be written.  The value of
       NAME should match the component names from devlink dev info and may be driver-dependent.

   devlink dev selftests show - shows supported selftests on devlink device.
       DEV - specifies the devlink device.  If this argument is omitted all selftests for devlink
       devices are listed.

   devlink dev selftests run - runs selftests on devlink device.
       DEV - specifies the devlink device to execute selftests.

       id ID...  - The value of ID(s) should match the selftests shown in devlink dev selftests
       show to execute selftests on the devlink device.  If this argument is omitted all
       selftests supported by devlink devices are executed.

EXAMPLES

       devlink dev show
           Shows the state of all devlink devices on the system.

       devlink dev show pci/0000:01:00.0
           Shows the state of specified devlink device.

       devlink dev eswitch show pci/0000:01:00.0
           Shows the eswitch mode of specified devlink device.

       devlink dev eswitch set pci/0000:01:00.0 mode switchdev
           Sets the eswitch mode of specified devlink device to switchdev.

       devlink dev param show pci/0000:01:00.0 name max_macs
           Shows the parameter max_macs attributes.

       devlink dev param set pci/0000:01:00.0 name internal_error_reset value true cmode runtime
           Sets the parameter internal_error_reset of specified devlink device to true.

       devlink dev reload pci/0000:01:00.0
           Performs hot reload of specified devlink device.

       devlink dev flash pci/0000:01:00.0 file firmware.bin
           Flashes the specified devlink device with provided firmware file name. If the driver
           supports it, user gets updates about the flash status. For example:
           Preparing to flash
           Flashing 100%
           Flashing done

       devlink dev selftests show pci/0000:01:00.0
           Shows the supported selftests by the devlink device.

       devlink dev selftests run pci/0000:01:00.0 id flash
           Perform a flash test on the devlink device.

SEE ALSO

       devlink(8), devlink-port(8), devlink-sb(8), devlink-monitor(8),

AUTHOR

       Jiri Pirko <jiri@mellanox.com>