netdev - Re: [PATCH net-next] rocker: forward packets to CPU when port is joined to openvswitch

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Date:	Thu, 16 Jul 2015 08:58:27 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	Scott Feldman <sfeldma@...il.com>
Cc:	Simon Horman <simon.horman@...ronome.com>,
	David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] rocker: forward packets to CPU when port is
 joined to openvswitch

Thu, Jul 16, 2015 at 08:40:31AM CEST, sfeldma@...il.com wrote:
>On Wed, Jul 15, 2015 at 6:39 PM, Simon Horman
><simon.horman@...ronome.com> wrote:
>> Teach rocker to forward packets to CPU when a port is joined to Open vSwitch.
>> There is scope to later refine what is passed up as per Open vSwitch flows
>> on a port.
>>
>> This does not change the behaviour of rocker ports that are
>> not joined to Open vSwitch.
>>
>> Signed-off-by: Simon Horman <simon.horman@...ronome.com>
>
>Acked-by: Scott Feldman <sfeldma@...il.com>
>
>Now, OVS flows on a port.  Strange enough, that was the first RFC
>implementation for switchdev/rocker where we hooked into ovs-kernel
>module and programmed flows into hw.  We pulled all of that code
>because, IIRC, the ovs folks didn't want us hooking into the kernel
>module directly.  We dropped the ovs hooks and focused on hooking
>kernel's L2/L3.  The device (rocker) didn't really change: OF-DPA
>pipeline was used for both.  Might be interesting to try hooking it
>again.


I think that now we have an infrastructure prepared for that. I mean,
what we need to do is to introduce another generic switchdev object
called "ntupleflow" and hook-up again into ovs datapath and cls_flower
and insert/remove the object from those codes. Should be pretty easy to do.
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