From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bart De Schuymer <bdschuym@pandora.be>
Subject: Re: Locking issue
Date: Thu, 16 Aug 2007 20:11:45 +0200
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To: Abhinav Srivastava <abhinavs_iitkgp@yahoo.co.in>
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Op do, 16-08-2007 te 18:54 +0100, schreef Abhinav Srivastava:
> 
> Hi there,
> 
> This email is regarding ebtables code i.e. bridge
> level filtering framework of netfilter. I have sent
> this email to ebtables mailing list also but have not
> heard from anyone. Hence, am sending this here too. I
> hope i will receive some favorable response.
> 
> I am new to ebtables code and looking for some help
> related to locking and atomicity. I am interested in
> looking into the packets intercepted by ebtables,
> extract some information, pass this information to
> userspace, wait for userspace response and then pass
> the result back to ebtable code.

What you seek is a QUEUE target as it exists for iptables. Unfortunately
this doesn't yet exist for ebtables. Maybe you can get away with it by
using the ebtables ulog watcher.

cheers,
Bart