netdev - Re: [RFC 5/9] net: dsa: mv88e6352: disable mirroring

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Date:	Tue, 2 Jun 2015 21:12:30 -0400 (EDT)
From:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:	Guenter Roeck <linux@...ck-us.net>, Andrew Lunn <andrew@...n.ch>
Cc:	netdev <netdev@...r.kernel.org>, David <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Scott Feldman <sfeldma@...il.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Jérome Oufella 
	<jerome.oufella@...oirfairelinux.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	kernel <kernel@...oirfairelinux.com>,
	Chris Healy <cphealy@...il.com>
Subject: Re: [RFC 5/9] net: dsa: mv88e6352: disable mirroring

Hi Guenter, Andrew,

On Jun 2, 2015, at 10:53 AM, Andrew Lunn andrew@...n.ch wrote:
On Tue, Jun 02, 2015 at 07:16:10AM -0700, Guenter Roeck wrote:
>> On 06/01/2015 06:27 PM, Vivien Didelot wrote:
>> >Disable the mirroring policy in the monitor control register, since this
>> >feature is not needed.
>> >
>> >Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
>> 
>> Should this be a separate patch, unrelated to the patch set ?

Indeed, this one is an unrelated patch, sorry.

>> If I understand correctly, this effectively disables IGMP/MLD snooping.
>> I think this warrants an explanation why that it not needed, not just
>> a statement that it is not needed.
> 
> +1
> 
> Especially since we might want to revisit this to implement IGMP/MLD
> snooping in the bridge. The hardware should be capable of it.

This is something I want to disable because I can have several times
gigabit traffic on my ports. This would end up in a bottleneck on the
CPU port. Am I right?

Thanks,
-v
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