netdev - Re: [patch net-next RFC 00/10] introduce line card support for modular switch

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Message-ID: <20210115141937.GL3565223@nanopsycho.orion>
Date:   Fri, 15 Jan 2021 15:19:37 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jacob Keller <jacob.e.keller@...el.com>
Cc:     Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org, roopa@...dia.com,
        mlxsw@...dia.com
Subject: Re: [patch net-next RFC 00/10] introduce line card support for
 modular switch

Thu, Jan 14, 2021 at 11:56:15PM CET, jacob.e.keller@...el.com wrote:
>
>
>On 1/13/2021 11:39 PM, Jiri Pirko wrote:
>> Thu, Jan 14, 2021 at 03:07:18AM CET, andrew@...n.ch wrote:
>>>
>>> I assume if i prevision for card4ports but actually install a
>>> card2ports, all the interfaces stay down?
>> 
>> Yes, the card won't get activated in case or provision mismatch.
>> 
>
>If you're able to detect the line card type when plugging it in, I don't
>understand why you need system administrator to pre-provision it using
>such an interface? Wouldn't it make more sense to simply detect the
>case? Or is it that you expect these things to be moved around and want
>to make sure that you can configure the associated netdevices before the
>card is plugged in?

That is what I wrote in the cover letter.