netdev - Re: [PATCH net-next] net, sched: add clsact qdisc

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Message-ID: <568E7660.1070801@mojatatu.com>
Date:	Thu, 7 Jan 2016 09:29:52 -0500
From:	Jamal Hadi Salim <jhs@...atatu.com>
To:	Daniel Borkmann <daniel@...earbox.net>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:	davem@...emloft.net, john.fastabend@...il.com,
	eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net, sched: add clsact qdisc

On 16-01-07 06:58 AM, Daniel Borkmann wrote:
> On 01/07/2016 11:09 AM, Hannes Frederic Sowa wrote:

>
> Idea was that this is done before we pick txq as stated. F.e., could also
> be that we end up not having enqueue handler, thus moving this further down
> (not sure if there's a good place?), might make it all more scattered resp.
> complex to cover all parts.
>

 From a cursory glance (Will comment a lot more later, definetely bt 
netdev11 time):
I like the idea - actually i think that this is where John was heading
initially. Both efforts complement each other.
This scheme could be used to compensate for the queue lock avoidance
and do a direct txmit (and let the hardware do the scheduling).
The classid selection could clearly be done at this early stage.
And a few of the standard skb metadatum could be used to map to
hardware offloading.

cheers,
jamal
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