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

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Message-ID: <20210115144019.GN3565223@nanopsycho.orion>
Date:   Fri, 15 Jan 2021 15:40:19 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Jacob Keller <jacob.e.keller@...el.com>, netdev@...r.kernel.org,
        davem@...emloft.net, roopa@...dia.com, mlxsw@...dia.com
Subject: Re: [patch net-next RFC 00/10] introduce line card support for
 modular switch

Fri, Jan 15, 2021 at 12:20:58AM CET, kuba@...nel.org wrote:
>On Thu, 14 Jan 2021 14:58:33 -0800 Jacob Keller wrote:
>> > There is no way to tell a breakout cable from normal one, so the
>> > system has no chance to magically configure itself. Besides SFP
>> > is just plugging a cable, not a module of the system.. 
>> >   
>> If you're able to tell what is plugged in, why would we want to force
>> user to provision ahead of time? Wouldn't it make more sense to just
>> instantiate them as the card is plugged in? I guess it might be useful
>> to allow programming the netdevices before the cable is actually
>> inserted... I guess I don't see why that is valuable.
>> 
>> It would be sort of like if you provision a PCI slot before a device is
>> plugged into it..
>
>Yup, that's pretty much my thinking as well.

Please see my reply in the other sub-tread of this thread. Thanks!