netdev - Re: [patch net-next v2 00/10] introduce rocker switch driver with hardware accelerated datapath api

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Date:	Mon, 10 Nov 2014 13:58:32 +0900
From:	Simon Horman <simon.horman@...ronome.com>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org,
	davem@...emloft.net, nhorman@...driver.com, andy@...yhouse.net,
	tgraf@...g.ch, dborkman@...hat.com, ogerlitz@...lanox.com,
	jesse@...ira.com, pshelar@...ira.com, azhou@...ira.com,
	ben@...adent.org.uk, stephen@...workplumber.org,
	jeffrey.t.kirsher@...el.com, vyasevic@...hat.com,
	xiyou.wangcong@...il.com, john.r.fastabend@...el.com,
	edumazet@...gle.com, sfeldma@...il.com, f.fainelli@...il.com,
	roopa@...ulusnetworks.com, linville@...driver.com,
	jasowang@...hat.com, ebiederm@...ssion.com,
	nicolas.dichtel@...nd.com, ryazanov.s.a@...il.com,
	buytenh@...tstofly.org, aviadr@...lanox.com, nbd@...nwrt.org,
	alexei.starovoitov@...il.com, Neil.Jerram@...aswitch.com,
	ronye@...lanox.com, alexander.h.duyck@...hat.com,
	john.ronciak@...el.com, mleitner@...hat.com, shrijeet@...il.com,
	gospo@...ulusnetworks.com, bcrl@...ck.org
Subject: Re: [patch net-next v2 00/10] introduce rocker switch driver with
 hardware accelerated datapath api - phase 1: bridge fdb offload

On Sun, Nov 09, 2014 at 11:03:40PM -0500, Jamal Hadi Salim wrote:
> Hi Simon,
> 
> On 11/09/14 22:46, Simon Horman wrote:
> >Hi Jamal, Hi Jiri,
> >
> >On a somewhat related note I am also wondering what if any progress has
> >been made regarding discussions of (and code for) the following:
> >
> >1. Exposing flow tables to user-space
> >    - I realise that this is Open vSwitch specific to some extent
> >      but I am in no way implying that it should be done instead of
> >      non-Open vSwitch specific work.
> >    - Jiri, IIRC this was part ~v2 of your earlier offload patchset
> >
> 
> I dont know what Rocker crowd is doing; however, I know
> John F. has been doing some work which i have stared at
> and I was hoping to join in with Ben's effort and show tc flow
> offload on the realtek chip in my infinite spare time unles.
> (for both Linux bridge and ports).
> The priority is to merge the obvious bits first.

Merging the obvious bits first is quite fine my me.

> >2. Describing Switch Hardware
> >    - I see John Fastabend moving forwards on this in his git repository
> >      https://github.com/jrfastab/flow-net-next
> >
> >The way that I see things is that both of the above could be exposed via
> >netlink. And that the first at least could be backed by NDOs.  As such I
> >see this work as complementary and perhaps applying on top of this
> >patchset. If I am mistaken in this regards it would be good to know :)
> >
> 
> You are correct - I will let John speak on his work, but
> that is the intent.
> The challenge is there are many schools of thoughts and i am hoping
> it is not an arms race.

That is also my hope.

> >I am of course also interested to know if the above are moving forwards.
> >To be clear I am very interested in being able to use these APIs to
> >perform Open vSwitch offloads and I am very happy to help.
> >(Jamal: I'm also interested in non-Open vSwitch offloads :)
> >
> 
> Hey, OVS should be able to use these APIs; i am just interested in making
> sure they are not just for OVS or OF. Then we are all happy;->

I think we are all happy :)
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