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Diffstat (limited to 'Documentation/networking/devlink/devlink-params.rst')
| -rw-r--r-- | Documentation/networking/devlink/devlink-params.rst | 61 |
1 files changed, 59 insertions, 2 deletions
diff --git a/Documentation/networking/devlink/devlink-params.rst b/Documentation/networking/devlink/devlink-params.rst index d075fd090b3d..ea17756dcda6 100644 --- a/Documentation/networking/devlink/devlink-params.rst +++ b/Documentation/networking/devlink/devlink-params.rst @@ -41,6 +41,16 @@ In order for ``driverinit`` parameters to take effect, the driver must support reloading via the ``devlink-reload`` command. This command will request a reload of the device driver. +Default parameter values +========================= + +Drivers may optionally export default values for parameters of cmode +``runtime`` and ``permanent``. For ``driverinit`` parameters, the last +value set by the driver will be used as the default value. Drivers can +also support resetting params with cmode ``runtime`` and ``permanent`` +to their default values. Resetting ``driverinit`` params is supported +by devlink core without additional driver support needed. + .. _devlink_params_generic: Generic configuration parameters @@ -97,14 +107,61 @@ own name. * - ``enable_roce`` - Boolean - Enable handling of RoCE traffic in the device. + * - ``enable_eth`` + - Boolean + - When enabled, the device driver will instantiate Ethernet specific + auxiliary device of the devlink device. + * - ``enable_rdma`` + - Boolean + - When enabled, the device driver will instantiate RDMA specific + auxiliary device of the devlink device. + * - ``enable_vnet`` + - Boolean + - When enabled, the device driver will instantiate VDPA networking + specific auxiliary device of the devlink device. + * - ``enable_iwarp`` + - Boolean + - Enable handling of iWARP traffic in the device. * - ``internal_err_reset`` - Boolean - When enabled, the device driver will reset the device on internal errors. * - ``max_macs`` - u32 - - Specifies the maximum number of MAC addresses per ethernet port of - this device. + - Typically macvlan, vlan net devices mac are also programmed in their + parent netdevice's Function rx filter. This parameter limit the + maximum number of unicast mac address filters to receive traffic from + per ethernet port of this device. * - ``region_snapshot_enable`` - Boolean - Enable capture of ``devlink-region`` snapshots. + * - ``enable_remote_dev_reset`` + - Boolean + - Enable device reset by remote host. When cleared, the device driver + will NACK any attempt of other host to reset the device. This parameter + is useful for setups where a device is shared by different hosts, such + as multi-host setup. + * - ``io_eq_size`` + - u32 + - Control the size of I/O completion EQs. + * - ``event_eq_size`` + - u32 + - Control the size of asynchronous control events EQ. + * - ``enable_phc`` + - Boolean + - Enable PHC (PTP Hardware Clock) functionality in the device. + * - ``clock_id`` + - u64 + - Clock ID used by the device for registering DPLL devices and pins. + * - ``total_vfs`` + - u32 + - The max number of Virtual Functions (VFs) exposed by the PF. + after reboot/pci reset, 'sriov_totalvfs' entry under the device's sysfs + directory will report this value. + * - ``num_doorbells`` + - u32 + - Controls the number of doorbells used by the device. + * - ``max_mac_per_vf`` + - u32 + - Controls the maximum number of MAC address filters that can be assigned + to a Virtual Function (VF). |