netdev - Re: [patch net-next v2 8/9] switchdev: introduce Netlink API

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Date:	Sat, 20 Sep 2014 06:31:12 -0400
From:	Jamal Hadi Salim <jhs@...atatu.com>
To:	Scott Feldman <sfeldma@...ulusnetworks.com>,
	Roopa Prabhu <roopa@...ulusnetworks.com>
CC:	Jiri Pirko <jiri@...nulli.us>, netdev <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, f.fainelli@...il.com, linville@...driver.com,
	dev@...nvswitch.org, 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, simon.horman@...ronome.com,
	alexander.h.duyck@...el.com,
	Shrijeet Mukherjee <shm@...ulusnetworks.com>
Subject: Re: [patch net-next v2 8/9] switchdev: introduce Netlink API

On 09/20/14 04:10, Scott Feldman wrote:
>
> On Sep 19, 2014, at 8:41 PM, Roopa Prabhu <roopa@...ulusnetworks.com> wrote:
>

>
> Existing rtnetlink isn’t available to swdev without some kind of snooping the echoes from the various kernel components
>(bridge, fib, etc).

You have made this claim before Scott and I am still not following.
Why do we need to echo things to get FDB or FIB to work? device ops for 
FDB offload for example already exist. I think they need to be
revamped, but that consensus can be reasonably reached. Why do we
need this flow api for such activities?

cheers,
jamal

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