netdev - Re: [RFC net-next 6/9] net/cls_flower: Introduce hardware offloading

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Message-ID: <56AFCD5E.7060400@gmail.com>
Date:	Mon, 01 Feb 2016 13:25:50 -0800
From:	John Fastabend <john.fastabend@...il.com>
To:	Amir Vadai <amir@...ai.me>
CC:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	John Fastabend <john.r.fastabend@...el.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Hadar Har-Zion <hadarh@...lanox.com>,
	Jiri Pirko <jiri@...lanox.com>,
	Jamal Hadi Salim <jhs@...atatu.com>
Subject: Re: [RFC net-next 6/9] net/cls_flower: Introduce hardware offloading

On 16-02-01 02:43 AM, Amir Vadai wrote:
> On Mon, Feb 01, 2016 at 01:31:17AM -0800, John Fastabend wrote:
>> On 16-02-01 12:34 AM, Amir Vadai wrote:
>>> During initialization, tcf_exts_offload_init() is called to initialize
>>> the list of actions description. later on, the classifier description
>>> is prepared and sent to the switchdev using switchdev_port_flow_add().
>>>
>>> When offloaded, fl_classify() is a NOP - already done in hardware.
>>>
>>> Signed-off-by: Amir Vadai <amir@...ai.me>
>>> ---
>>
>> You need to account for where the classifier is being loaded
>> by passing the handle as I did in my patch set. Otherwise you may
>> be offloading on egress/ingress or even some qdisc multiple layers
>> down in the hierarchy.
> Right. Will fix it.

also it seems you missed fl_delete() this will be called from cmds
like 'tc filter delete ...'

> 
>>
>> .John
>>