> On Mon, 2005-08-01 at 16:29 -0400, Frank Abel Cancio Bello wrote:
> > Hi all!
> >
> > Some time ago I post a mail in this list
> >
("https://lists.netfilter.org/pipermail/netfilter/2005-April/059499.html";)
> > asking about how manage packets that was captured with "libipq" and
"QUEUE"
> > target in different threads or process.
> >
> > Now with the new "NFQUEUE" target I can have many process reading
parckets
> > in different queues numbers and using "nth match" to spread equitably
over
> > all process the captured packects.
>
> This look terribly awfull to me ! You better use a single multithreaded
> application.
>
Due to libipq isn't thread-safe (see one problem in
http://www.experts-exchange.com/Programming/Programming_Platforms/Linux_Programming/Q_20766491.html)
and I'm not a netfilter hacker I send the mail
(https://lists.netfilter.org/pipermail/netfilter/2005-April/059499.html) but
anybody reply.
The problem is that I need to know if is safe make a multithreaded
application with libipq. Now I have the same questions that that some time
ago:
1-Exist other precaution
(http://www.experts-exchange.com/Programming/Programming_Platforms/Linux_Programming/Q_20766491.html)
that I must take?
2-Can anybody send me a sample code about a multithreaded application with
libipq? A code different to the found in
http://www.experts-exchange.com/Programming/Programming_Platforms/Linux_Programming/Q_20766491.html
Excuse me my panic but the application that I pretend to develop can't fail.
Is a traffic manager and the extrange behavior like reported in
http://www.experts-exchange.com/Programming/Programming_Platforms/Linux_Programming/Q_20766491.html
isn't permited.
> > My questions are:
> >
> > 1-What libipq's functions change and how? I look in the manpage in the
> > recent 1.3.3 iptables release and don't find anything.
>
> It will come soon, userspace lib is only available from svn. A compat
> libipq library is planned but there's still work to do on it.
> SVN is available at :
> http://svn.netfilter.org/netfilter/trunk/
> Currently the userspace API is work in progress...
>
> BR,
> --
> Eric Leblond <eric@xxxxxx>
> INL
>
Thanks eric
Frank
