netdev - Re: tc filter mask for ACK packets off?

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Message-ID: <4F0396D1.9030303@ziu.info>
Date:	Wed, 04 Jan 2012 01:01:21 +0100
From:	Michal Soltys <soltys@....info>
To:	Michal Kubeček <mkubecek@...e.cz>
Cc:	netdev@...r.kernel.org,
	"John A. Sullivan III" <jsullivan@...nsourcedevel.com>
Subject: Re: tc filter mask for ACK packets off?

On 12-01-03 08:31, Michal Kubeček wrote:
> On Saturday 31 of December 2011 21:30EN, John A. Sullivan III wrote:
>>  <cut>
>
> However, by a "ACK only" packet (worth prioritizing), I would rather
> understand a packet with ACK flag without any payload, not a packet with
> ACK as the only flag. For many TCP connections, all packets except
> initial SYN and SYN-ACK and two FIN packets have ACK as the only flag.
> So my guess is you should rather prioritize all TCP packets with no
> application layer data.
>
>                                                           Michal Kubecek

In context of the above - xtables-addons provide length2 match which 
(possibly paired with other iptables matches) gives excellent control 
for such tasks.
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