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Date:   Wed, 2 Sep 2020 16:18:48 +0000
From:   Parav Pandit <>
To:     Jakub Kicinski <>, Jiri Pirko <>
CC:     Parav Pandit <>,
        "" <>,
        "" <>,
        "" <>,
        "" <>,
        Jiri Pirko <>
Subject: RE: [PATCH net-next 2/3] devlink: Consider other controller while
 building phys_port_name

Hi Jakub,

> From: Jakub Kicinski <>
> Sent: Wednesday, September 2, 2020 8:54 PM
> On Wed, 2 Sep 2020 10:00:11 +0200 Jiri Pirko wrote:
> >>> I didn't quite get the fact that you want to not show controller ID
> >>> on the local port, initially.
> >> Mainly to not_break current users.
> >
> > You don't have to take it to the name, unless "external" flag is set.
> >
> > But I don't really see the point of showing !external, cause such
> > controller number would be always 0. Jakub, why do you think it is
> > needed?
> It may seem reasonable for a smartNIC where there are only two controllers,
> and all you really need is that external flag.
> In a general case when users are trying to figure out the topology not
> knowing which controller they are sitting at looks like a serious limitation.
> Example - multi-host system and you want to know which controller you are
> to run power cycle from the BMC side.
> We won't be able to change that because it'd change the names for you.

Is BMC controller running devlink instance?
How the power outlet and devlink instance are connected?
Can you please provide the example to understand the relation?

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