netdev - RE: [PATCH net-next v2 4/7] devlink: allow subports on devlink PCI ports

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Message-ID: <VI1PR0501MB22716AE5DB8F6517FDCA0921D1470@VI1PR0501MB2271.eurprd05.prod.outlook.com>
Date:   Mon, 18 Mar 2019 19:38:41 +0000
From:   Parav Pandit <parav@...lanox.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Jiri Pirko <jiri@...nulli.us>
CC:     "Samudrala, Sridhar" <sridhar.samudrala@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "oss-drivers@...ronome.com" <oss-drivers@...ronome.com>
Subject: RE: [PATCH net-next v2 4/7] devlink: allow subports on devlink PCI
 ports



> -----Original Message-----
> From: Jakub Kicinski <jakub.kicinski@...ronome.com>
> Sent: Monday, March 18, 2019 2:19 PM
> To: Jiri Pirko <jiri@...nulli.us>
> Cc: Parav Pandit <parav@...lanox.com>; Samudrala, Sridhar
> <sridhar.samudrala@...el.com>; davem@...emloft.net;
> netdev@...r.kernel.org; oss-drivers@...ronome.com
> Subject: Re: [PATCH net-next v2 4/7] devlink: allow subports on devlink PCI
> ports
> 
> On Mon, 18 Mar 2019 13:21:05 +0100, Jiri Pirko wrote:
> > >First two entries shows the link between hostport and switchport.
> > >$ devlink port show
> > >pci/0000:05:00.0/10002 eth netdev flavour switchport switch_id
> 00154d130d2f peer pci/0000:05:00.0/1
> > >
> > >pci/0000:05:00.0/1 eth netdev flavour hostport switch_id 00154d130d2f
> peer pci/0000:05:00.0/10002
> >
> > Hostport should not have switch_id.
> 
> Isn't a concept of a port of a switch without a switch ID a red flag?
It shows that a given hostport is connected to a given switchid at given switchport.
But I believe this info can be dropped, because this is visible at the switchport side.
So when showing hostport, it can be just only,

pci/0000:05:00.0/1 eth netdev flavour hostport