netdev - RE: [PATCH v5 2/6] staging: fsl-dpaa2/ethsw: Add Freescale DPAA2 Ethernet Switch driver

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Message-ID: <AM3PR04MB07431282E4801B905EAE7AFCE6D10@AM3PR04MB0743.eurprd04.prod.outlook.com>
Date:   Wed, 14 Mar 2018 14:27:55 +0000
From:   Razvan Stefanescu <razvan.stefanescu@....com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Alexander Graf <agraf@...e.de>,
        "arnd@...db.de" <arnd@...db.de>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Ruxandra Ioana Ciocoi Radulescu <ruxandra.radulescu@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        "stuyoder@...il.com" <stuyoder@...il.com>
Subject: RE: [PATCH v5 2/6] staging: fsl-dpaa2/ethsw: Add Freescale DPAA2
 Ethernet Switch driver



> -----Original Message-----
> From: Andrew Lunn [mailto:andrew@...n.ch]
> Sent: Tuesday, March 13, 2018 5:26 PM
> To: Razvan Stefanescu <razvan.stefanescu@....com>
> Cc: gregkh@...uxfoundation.org; devel@...verdev.osuosl.org; linux-
> kernel@...r.kernel.org; netdev@...r.kernel.org; Alexander Graf
> <agraf@...e.de>; arnd@...db.de; Alexandru Marginean
> <alexandru.marginean@....com>; Ruxandra Ioana Ciocoi Radulescu
> <ruxandra.radulescu@....com>; Ioana Ciornei <ioana.ciornei@....com>;
> Laurentiu Tudor <laurentiu.tudor@....com>; stuyoder@...il.com
> Subject: Re: [PATCH v5 2/6] staging: fsl-dpaa2/ethsw: Add Freescale DPAA2
> Ethernet Switch driver
> 
> > Hello Andrew,
> >
> > The current driver implementation uses only a single FDB for the switch,
> > so  it is not possible configure multiple flooding domains to accommodate
> > ports partitioning.
> 
> Ah, O.K. Rather than break somebodies network by wrongly flooding, it
> would be better to return -EOPNOTSUPP when the requirement for the
> second FDB is met. The offload to hardware will then not happen, and
> the software bridge will do all the work.
> 
Thank you for your suggestion. I will add to the TODO list in v6.

Razvan
>     Andrew