man > DEVLINK-DEV(8)

DEVLINK-DEV(8)                                  Linux                                 DEVLINK-DEV(8)

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  re‐
              quire 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 argu‐
       ment 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-re‐
       source 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 ac‐
       tion 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  in‐
       clude 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  re‐
       boot.


       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 para‐
       meter 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  sup‐
       ported 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 sup‐
           ports 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 AT mellanox.com>

iproute2                                     14 Mar 2016                              DEVLINK-DEV(8)