netdev - Re: [PATCH net-next 2/3] devlink: Consider other controller while building phys_port

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Date:   Tue, 1 Sep 2020 14:28:40 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Parav Pandit <parav@...dia.com>, Parav Pandit <parav@...lanox.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "roid@...lanox.com" <roid@...lanox.com>,
        "saeedm@...lanox.com" <saeedm@...lanox.com>,
        Jiri Pirko <jiri@...dia.com>
Subject: Re: [PATCH net-next 2/3] devlink: Consider other controller while
 building phys_port_name

On Tue, 1 Sep 2020 11:17:42 +0200 Jiri Pirko wrote:
> >> The external PFs need to have an extra attribute with "external
> >> enumeration" what would be used for the representor netdev name as well.
> >> 
> >> pci/0000:00:08.0/0: type eth netdev enp0s8f0 flavour physical
> >> pci/0000:00:08.0/1: type eth netdev enp0s8f0_pf0 flavour pcipf pfnum 0
> >> pci/0000:00:08.0/2: type eth netdev enp0s8f0_e0pf0 flavour pcipf extnum 0
> >> pfnum 0  
> >
> >How about a prefix of "ec" instead of "e", like?
> >pci/0000:00:08.0/2: type eth netdev enp0s8f0_ec0pf0 flavour pcipf ecnum 0 pfnum 0  
> 
> Yeah, looks fine to me. Jakub?

I don't like that local port doesn't have the controller ID.

Whether PCI port is external or not is best described by a the peer
relation. Failing that, at the very least "external" should be a
separate attribute/flag from the controller ID.

I didn't quite get the fact that you want to not show controller ID 
on the local port, initially.