linux-kernel - Re: [PATCH v1 4/4] net: dsa: add support for Atheros AR9331 build-in switch

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Date:   Fri, 18 Oct 2019 06:52:26 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>, Chris Snook <chris.snook@...il.com>,
        James Hogan <jhogan@...nel.org>,
        Jay Cliburn <jcliburn@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Paul Burton <paul.burton@...s.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Vivien Didelot <vivien.didelot@...il.com>,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v1 4/4] net: dsa: add support for Atheros AR9331 build-in
 switch

On Thu, Oct 17, 2019 at 11:35:48AM -0700, Florian Fainelli wrote:
> 
> 
> On 10/13/2019 11:15 PM, Oleksij Rempel wrote:
> > Provide basic support for Atheros AR9331 build-in switch. So far it
> > works as port multiplexer without any hardware offloading support.
> 
> I glanced through the functional parts of the code, and it looks pretty
> straight forward, since there is no offloading done so far, do you plan
> on adding bridge offload eventually if nothing more?

Currently not. There are following reasons:
- I do it for the Freifunk project. It is currently not clear, what
  functionality has higher priority.
- there are not many ar9331 based devices with enough RAM to run any
  thing modern. There is even less devices using more then one switch
  port.
- IPv6 support is important for this project, but old Atheros switches have some
  known issues with IPv6 packages in hardware bridge mode. So, this
  functionality will need more testing.

> When you submit v2, I would suggest splitting the tagger code from the
> switch driver code, just to make them easier to review.

ok.

Regards,
Oleksij
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