netdev - Re: [PATCH net-next 1/3] devlink: Introduce PCI PF port flavour and port attribute

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Date:   Tue, 2 Jul 2019 16:42:52 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Parav Pandit <parav@...lanox.com>
Cc:     Jiri Pirko <jiri@...lanox.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: Re: [PATCH net-next 1/3] devlink: Introduce PCI PF port flavour and
 port attribute

On Tue, 2 Jul 2019 18:50:31 +0000, Parav Pandit wrote:
> > > I didn't see any immediate need to report, at the same time didn't
> > > find any reason to treat such port flavours differently than existing
> > > one. It just gives a clear view of the device's eswitch. Might find it
> > > useful during debugging while inspecting device internal tables..  
> > 
> > PFs and VFs ports are not tied to network ports in switchdev mode.
> > You have only one network port under a devlink instance AFAIR, anyway.
> >   
> I am not sure what do you mean by network port.

DEVLINK_PORT_FLAVOUR_PHYSICAL

> Do you intent to see a physical port that connects to physical network?
> 
> As I described in the comment of the PF and VF flavour, it is an eswitch port.
> I have shown the diagram also of the eswitch in the cover letter.
> Port_number doesn't have to a physical port. Flavour describe what
> port type is and number says what is the eswitch port number.
> Hope it clarifies.

I understand what you're doing.  If you want to expose some device
specific eswitch port ID please add a new attribute for that.
The fact that that ID may match port_number for your device today 
is coincidental.  port_number, and split attributes should not be
exposed for PCI ports.