netdev - Re: phys_port_id in switchdev mode?

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Date:   Fri, 31 Aug 2018 17:13:22 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Or Gerlitz <gerlitz.or@...il.com>,
        Simon Horman <simon.horman@...ronome.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "mchan@...adcom.com" <mchan@...adcom.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Alexander Duyck <alexander.duyck@...il.com>,
        Frederick Botha <frederick.botha@...ronome.com>,
        nick viljoen <nick.viljoen@...ronome.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: phys_port_id in switchdev mode?

On Tue, Aug 28, 2018 at 08:43:51PM +0200, Jakub Kicinski wrote:
> Ugh, CC: netdev..
> 
> On Tue, 28 Aug 2018 20:05:39 +0200, Jakub Kicinski wrote:
> > Hi!
> > 
> > I wonder if we can use phys_port_id in switchdev to group together
> > interfaces of a single PCI PF?  Here is the problem:

On Mellanox cards, this is already possible via phys_switch_id, as
each PF has its own phys_switch_id. So all VFs with a given
phys_switch_id belong to the PF with that same phys_switch_id.

I understand this is a vendor-specific design, but if you have the
same phys_switch_id across PFs, does it really matter on which PF the
VF was created on?

  Marcelo