netdev - Re: [PATCH net-next v3 RFC 0/8] devlink: Add configuration parameters support for devlink

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Date:   Fri, 14 Dec 2018 14:08:18 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Vasundhara Volam <vasundhara-v.volam@...adcom.com>
Cc:     davem@...emloft.net, michael.chan@...adcom.com, jiri@...lanox.com,
        jakub.kicinski@...ronome.com, mkubecek@...e.cz,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next v3 RFC 0/8] devlink: Add configuration
 parameters support for devlink_port

Fri, Dec 14, 2018 at 11:09:46AM CET, vasundhara-v.volam@...adcom.com wrote:
>This patchset adds support for configuration parameters setting through
>devlink_port.  Each device registers supported configuration parameters
>table.
>
>The user can retrieve data on these parameters by
>"devlink port param show" command and can set new value to a
>parameter by "devlink port param set" command.
>All configuration modes supported by devlink_dev are supported
>by devlink_port also.
>
>Command examples and output:
>
># devlink port param show
>pci/0000:3b:00.0/0:
>  name wake-on-lan type generic
>    values:
>      cmode permanent value false
>
>pci/0000:3b:00.1/1:
>  name wake-on-lan type generic
>    values:
>      cmode permanent value false
>
>pci/0000:af:00.0/0:
>  name wake-on-lan type generic
>    values:
>      cmode permanent value true
>
># devlink port param show pci/0000:3b:00.0/0 name wake-on-lan
>pci/0000:3b:00.0/0:
>  name wake-on-lan type generic
>    values:
>      cmode permanent value false
>
># devlink port param set pci/0000:3b:00.0/0 name wake-on-lan cmode permanent value true
>
>v2->v3:
>Make following changes as per suggestions from Jiri Pirko and
>Michal Kubecek.
>- Add a helper __devlink_params_register() with common code used by
>  both devlink_params_register() and devlink_port_params_register().
>- Define only WOL types used now and define them as bitfield, so that
>  mutliple WOL types can be enabled upon power on.
>- Modify "wake-on-lan" name to "wake_on_lan" to be symmetric with
>  previous definitions.
>- Rename DEVLINK_PARAM_WOL_XXX to DEVLINK_PARAM_WAKE_XXX to be
>  symmetrical with ethtool WOL definitions.
>- Modify bnxt_dl_wol_validate(), to throw error message when user gives
>  value other than DEVLINK_PARAM_WAKE_MAGIC ot to disable WOL.
>- Use netdev_err() instead of netdev_warn(), when devlink_port_register()
>  and devlink_port_params_register() returns error. Also, don't log rc
>  in this message.

Could you please have this changelog per-patch? The best way is to put
this into under individual patch descriptions. Thanks.


>
>v1->v2:
>Make following changes as per suggestions from Jiri Pirko.
>- Remove separate enum devlink_port_param_generic_id for port params.
>  Instead club it with existing device params. Accordingly refactor
>  remaining patchset.
>- Move INIT_LIST_HEAD of port param_list to devlink_port_register()
>- Add a helper devlink_param_verify() to be used for both
>  devlink_params_register() and devlink_port_params_register().
>- Add a helper __devlink_params_unregister() for common code in
>  devlink_params_unregister() and devlink_port_params_unregister().
>- Move DEVLINK_CMD_PORT_PARAM_XXX definitions to the end of the enum.
>- Split the patches for devlink_port_param_driverinit_value_get() and
>  devlink_port_param_driverinit_value_set() into separate patches.
>- define DEVLINK_PARAM_GENERIC_ID_WOL type as u8 and define enum for
>  different types of WOL. Accordingly modify bnxt_en patch to validate
>  wol type.
>
>Vasundhara Volam (8):
>  devlink: Add devlink_param for port register and unregister
>  devlink: Add port param get command
>  devlink: Add port param set command
>  devlink: Add support for driverinit get value for devlink_port
>  devlink: Add support for driverinit set value for devlink_port
>  devlink: Add devlink notifications support for port params
>  devlink: Add a generic wake_on_lan port parameter
>  bnxt_en: Add bnxt_en initial port params table and register it
>
> drivers/net/ethernet/broadcom/bnxt/bnxt.h         |   1 +
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c |  43 +-
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h |   1 +
> include/net/devlink.h                             |  57 +++
> include/uapi/linux/devlink.h                      |   5 +
> net/core/devlink.c                                | 464 ++++++++++++++++++----
> 6 files changed, 489 insertions(+), 82 deletions(-)
>
>-- 
>1.8.3.1
>