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

NAME         top

       devlink-dev - devlink device configuration

SYNOPSIS         top

       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 {
               disable | enable } ]

       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

DESCRIPTION         top

   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:

   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 { disable | enable }
              Set eswitch encapsulation support

              disable - Disable encapsulation support

              enable - Enable encapsulation support

   devlink dev param set - set new value to devlink device configuration
       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

              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.

EXAMPLES         top

       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.

SEE ALSO         top

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

AUTHOR         top

       Jiri Pirko <>

COLOPHON         top

       This page is part of the iproute2 (utilities for controlling TCP/IP
       networking and traffic) project.  Information about the project can
       be found at 
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       from the project's upstream Git repository
       ⟨⟩ on
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iproute2                         14 Mar 2016                  DEVLINK-DEV(8)

Pages that refer to this page: devlink(8)devlink-monitor(8)devlink-port(8)devlink-region(8)devlink-sb(8)