netdev - Re: [PATCH v2 0/2] l2 hardware accelerated macvlans

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Message-ID: <52790CD1.5060908@gmail.com>
Date:	Tue, 05 Nov 2013 10:20:49 -0500
From:	Vlad Yasevich <vyasevich@...il.com>
To:	John Fastabend <john.r.fastabend@...el.com>
CC:	nhorman@...driver.com, alexander.h.duyck@...el.com,
	netdev@...r.kernel.org, andy@...yhouse.net, davem@...emloft.net,
	jeffrey.t.kirsher@...el.com
Subject: Re: [PATCH v2 0/2] l2 hardware accelerated macvlans

On 11/05/2013 10:17 AM, John Fastabend wrote:
> On 11/5/2013 6:47 AM, Vlad Yasevich wrote:
>> Hi John
>>
>
> [...]
>
>>> series. It would be best (I think) to use the software
>>> path for macvlan to macvlan traffic and save the PCIe
>>> bus. Also this only allows for layer 2 mac forwarding
>>> where some hardware supports more interesting forwarding
>>> capabilities. Integrating with OVS may be useful here.
>>
>> This seems to be saying that for macvlan-macvlan
>> case, you still prefere to do software based forwarding, but
>> patch 1 in the series seem to always attempt to do hardware
>> offloaded forwarding regardless of traffic and macvlan type.
>> Can you clarify.
>>
>> Thanks
>> -vlad
>>
>
> This series always attempts to do hardware offload even in the
> macvlan-macvlan case as you note. I'm suggesting a further
> optimization might be to use the software based forwarding in
> this case. My plan is to investigate this after I get the initial
> series completed.
>

Ahh.  Got it.

Thanks
-vlad

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