linux-kernel - Re: [PATCH net-next v2] net: devlink: add DEVLINK_INFO_VERSION_GENERIC_FW

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Date:   Thu, 1 Dec 2022 02:52:17 +0900
From:   Vincent MAILHOL <mailhol.vincent@...adoo.fr>
To:     Marc Kleine-Budde <mkl@...gutronix.de>
Cc:     Jiri Pirko <jiri@...nulli.us>, Jiri Pirko <jiri@...dia.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        linux-can <linux-can@...r.kernel.org>
Subject: Re: [PATCH net-next v2] net: devlink: add DEVLINK_INFO_VERSION_GENERIC_FW_BOOTLOADER

On Thu. 1 Dec. 2022 at 02:14, Marc Kleine-Budde <mkl@...gutronix.de> wrote:
> On 29.11.2022 18:28:44, Vincent MAILHOL wrote:
> > On Tue. 29 Nov. 2022 at 17:33, Jiri Pirko <jiri@...nulli.us> wrote:
> > > Tue, Nov 29, 2022 at 04:14:06AM CET, mailhol.vincent@...adoo.fr wrote:
> > > >As discussed in [1], abbreviating the bootloader to "bl" might not be
> > > >well understood. Instead, a bootloader technically being a firmware,
> > > >name it "fw.bootloader".
> > > >
> > > >Add a new macro to devlink.h to formalize this new info attribute name
> > > >and update the documentation.
> > > >
> > > >[1] https://lore.kernel.org/netdev/20221128142723.2f826d20@kernel.org/
> > > >
> > > >Suggested-by: Jakub Kicinski <kuba@...nel.org>
> > > >Signed-off-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
> > > >---
> > > >* Changelog *
> > > >
> > > >v1 -> v2:
> > > >
> > > >  * update the documentation as well.
> > > >  Link: https://lore.kernel.org/netdev/20221129020151.3842613-1-mailhol.vincent@wanadoo.fr/
> > > >---
> > > > Documentation/networking/devlink/devlink-info.rst | 5 +++++
> > > > include/net/devlink.h                             | 2 ++
> > > > 2 files changed, 7 insertions(+)
> > > >
> > > >diff --git a/Documentation/networking/devlink/devlink-info.rst b/Documentation/networking/devlink/devlink-info.rst
> > > >index 7572bf6de5c1..1242b0e6826b 100644
> > > >--- a/Documentation/networking/devlink/devlink-info.rst
> > > >+++ b/Documentation/networking/devlink/devlink-info.rst
> > > >@@ -198,6 +198,11 @@ fw.bundle_id
> > > >
> > > > Unique identifier of the entire firmware bundle.
> > > >
> > > >+fw.bootloader
> > > >+-------------
> > > >+
> > > >+Version of the bootloader.
> > > >+
> > > > Future work
> > > > ===========
> > > >
> > > >diff --git a/include/net/devlink.h b/include/net/devlink.h
> > > >index 074a79b8933f..2f552b90b5c6 100644
> > > >--- a/include/net/devlink.h
> > > >+++ b/include/net/devlink.h
> > > >@@ -621,6 +621,8 @@ enum devlink_param_generic_id {
> > > > #define DEVLINK_INFO_VERSION_GENERIC_FW_ROCE  "fw.roce"
> > > > /* Firmware bundle identifier */
> > > > #define DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID     "fw.bundle_id"
> > > >+/* Bootloader */
> > > >+#define DEVLINK_INFO_VERSION_GENERIC_FW_BOOTLOADER    "fw.bootloader"
> > >
> > > You add it and don't use it. You should add only what you use.
> >
> > I will use it in this series for the linux-can tree:
> > https://lore.kernel.org/netdev/20221126162211.93322-4-mailhol.vincent@wanadoo.fr/
> >
> > If it is a problem to send this as a standalone patch, I will then
> > just add it to my series and have the patch go through the linux-can
> > tree.
>
> As you have the Ok from Greg, include this in you v5 series.

This is a different patch. Greg gave me his ACK to export usb_cache_string():
  https://lore.kernel.org/linux-usb/Y3zyCz5HbGdsxmRT@kroah.com/

This is a new patch to add an info attribute for the bootloader in
devlink.h. Regardless, I added it to the v5:
  https://lore.kernel.org/linux-can/20221130174658.29282-5-mailhol.vincent@wanadoo.fr/

@Jakub (and other netdev maintainers): do not pick this, it will go
through linux-can.


Yours sincerely,
Vincent Mailhol