netdev - Re: libpcap and tc filters

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Date:	Mon, 04 Jul 2011 07:11:48 -0400
From:	jamal <hadi@...erus.ca>
To:	Adam Katz <adamkatz0@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: libpcap and tc filters


Capture tcpdump for both scenario that works and one
that doesnt.
Make sure the filters match your failing scenario.

cheers,
jamal

On Mon, 2011-07-04 at 10:38 +0300, Adam Katz wrote:
> Hi Everyone
> 
> I'm sorry for littering the mailing list with this question, but no
> other place could help me..
> 
> I'm attempting to use tc to shape traffic sent using libpcap, I'm
> doing this for a research project. I have a classful scheduler with
> several classes, to this scheduler I attach a few filters based on
> destination tcp ports.
> 
> My problem is this: When sending packets using a normal userland
> socket, the filters work and I see the appropriate traffic entering
> the right class. BUT when sending packets with libpcap, all packets
> end up in the scheduler's default band as if the filters simply refuse
> to work.
> 
> Can anyone suggest a solution?
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