netdev - Re: [patch net-next 0/4] net: devlink: sync flash and dev info command

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Date:   Fri, 19 Aug 2022 10:25:04 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, idosch@...dia.com,
        pabeni@...hat.com, edumazet@...gle.com, saeedm@...dia.com,
        jacob.e.keller@...el.com, vikas.gupta@...adcom.com,
        gospo@...adcom.com, m.chetan.kumar@...ux.intel.com,
        chandrashekar.devegowda@...el.com, soumya.prakash.mishra@...el.com
Subject: Re: [patch net-next 0/4] net: devlink: sync flash and dev info
 command

Fri, Aug 19, 2022 at 04:49:40AM CEST, kuba@...nel.org wrote:
>On Thu, 18 Aug 2022 15:00:38 +0200 Jiri Pirko wrote:
>> Currently it is up to the driver what versions to expose and what flash
>> update component names to accept. This is inconsistent. Thankfully, only
>> netdevsim is currently using components, so it is a good time
>> to sanitize this.
>
>Please take a look at recently merged code - 5417197dd516 ("Merge branch
>'wwan-t7xx-fw-flashing-and-coredump-support'"), I don't see any versions
>there so I think you're gonna break them?

Ah, crap. Too late :/ They are passing the string to FW (cmd is
the component name here):
static int t7xx_devlink_fb_flash(const char *cmd, struct t7xx_port *port)
{
        char flash_command[T7XX_FB_COMMAND_SIZE];

        snprintf(flash_command, sizeof(flash_command), "%s:%s", T7XX_FB_CMD_FLASH, cmd);
        return t7xx_devlink_fb_raw_command(flash_command, port, NULL);
}

This breaks the pairing with info.versions assumption. Any possibility
to revert this and let them redo?

Ccing m.chetan.kumar@...ux.intel.com, chandrashekar.devegowda@...el.com,
soumya.prakash.mishra@...el.com

Guys, could you expose one version for component you are flashing? We
need 1:1 mapping here.

Thanks!