netdev - Re: [patch net-next RFC 00/12] devlink: introduce port flavours and common phys_port

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Date:   Sat, 24 Mar 2018 20:00:32 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org,
        davem@...emloft.net, idosch@...lanox.com,
        jakub.kicinski@...ronome.com, mlxsw@...lanox.com,
        vivien.didelot@...oirfairelinux.com, michael.chan@...adcom.com,
        ganeshgr@...lsio.com, saeedm@...lanox.com,
        simon.horman@...ronome.com, pieter.jansenvanvuuren@...ronome.com,
        john.hurley@...ronome.com, dirk.vandermerwe@...ronome.com,
        alexander.h.duyck@...el.com, ogerlitz@...lanox.com,
        dsahern@...il.com, vijaya.guvva@...ium.com,
        satananda.burla@...ium.com, raghu.vatsavayi@...ium.com,
        felix.manlunas@...ium.com, gospo@...adcom.com,
        sathya.perla@...adcom.com, vasundhara-v.volam@...adcom.com,
        tariqt@...lanox.com, eranbe@...lanox.com,
        jeffrey.t.kirsher@...el.com
Subject: Re: [patch net-next RFC 00/12] devlink: introduce port flavours and
 common phys_port_name generation

> >>>>>> >root@...-devel-b:~# ./iproute2/devlink/devlink port 
> >>>>>> >mdio_bus/0.1:00/0: type eth netdev lan0 flavour physical number 0
> >>>>>> >mdio_bus/0.1:00/1: type eth netdev lan1 flavour physical number 1
> >>>>>> >mdio_bus/0.1:00/2: type eth netdev lan2 flavour physical number 2
> >>>>>> >mdio_bus/0.1:00/3: type notset
> >>>>>> >mdio_bus/0.1:00/4: type notset
> >>>>>> >mdio_bus/0.1:00/5: type notset flavour dsa number 5
> >>>>>> >mdio_bus/0.1:00/6: type notset flavour cpu number 6
> >>>>>> >mdio_bus/0.2:00/0: type eth netdev lan3 flavour physical number 0
> >>>>>> >mdio_bus/0.2:00/1: type eth netdev lan4 flavour physical number 1
> >>>>>> >mdio_bus/0.2:00/2: type eth netdev lan5 flavour physical number 2
> >>>>>> >mdio_bus/0.2:00/3: type notset
> >>>>>> >mdio_bus/0.2:00/4: type notset
> >>>>>> >mdio_bus/0.2:00/5: type notset flavour dsa number 5
> >>>>>> >mdio_bus/0.2:00/6: type notset flavour dsa number 6
> >>>>>> >mdio_bus/0.4:00/0: type eth netdev lan6 flavour physical number 0
> >>>>>> >mdio_bus/0.4:00/1: type eth netdev lan7 flavour physical number 1
> >>>>>> >mdio_bus/0.4:00/2: type eth netdev lan8 flavour physical number 2
> >>>>>> >mdio_bus/0.4:00/3: type eth netdev optical3 flavour physical

> >What is an appropriate attribute to use to return the physical port number within a given switch?
> 
> I don't think there's one out there. I tried to add it in this patchset.

Florian, do you need it to be unique per switch, or DSA cluster. The
current solution is clearly not unique across a cluster.

	Andrew