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

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Message-ID: <35d85fb0-a3db-e0c4-ca5a-f3e962c3dfbf@intel.com>
Date:   Thu, 14 Jan 2021 14:56:15 -0800
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     Jiri Pirko <jiri@...nulli.us>, Andrew Lunn <andrew@...n.ch>
Cc:     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

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?