Re: [ANNOUNCE] NF-HIPAC: High Performance Packet Classification

Roberto Nibali
2002-09-26T20:17:09Z

Hello Jamal,

[took out AK und DaveM since I know they both read netdev and this reply
is not really of any relevance to them]

> It would be nice if people would start ccing networking related
> discussions to netdev. I missed the first part of the discussion
> but i take it the NF-HIPAC posted a patch.. BTW, I emailed the authors

Yes, your assumption is correct and sorry for missing the cc once again.

> when i read the paper but never heard back.
> What i wanted the authors was to compare against one of the tc
> classifiers not iptables.

I will contact you privately on this issue since I'm about to conduct
tests this weekend.

> I hacked some code using the traffic control framework around OLS time;
> there are a lot of ideas i havent incorporated yet. Too many hacks, too
> little time ;-> I think this is what i may have showed Roberto on my
> laptop over a drink.

Exactly (even wearing a netfilter T-shirt).

> I probably wouldnt have put this code out if my complaints about
> netfilter werent ignored.
> And you know what happens when you start writting poetry, I ended worrying
> more than just about the performance problems of iptables; for example
> the code i have now makes it easy to extend the path a packet takes using
> simple policies.

Great, I remember some of your postings about the netfilter framework.

> The code i have is based around tc framework. One thing i liked about
> netfilter is the idea of targets being separate modules; so the code i
> have infact makes uses of netfilter targets.
> I plan on revisiting this code at some point, maybe this weekend now that
> i am reminded of it ;->

Excellent, this could make it into my test suites as well.

> Take a look:
> http://www.cyberus.ca/~hadi/patches/action.DESCRIPTION

I did, I simply didn't find the time to do it.

> Agreed, you need a netlink to syslog converter.
> Netlink is king -- all the policies in the above code are netlink
> controlled. All events are also netlink transported. You dont have to send
> every little message you see; netlink allows you to batch and you could
> easily do a nagle like algorithm. Next steps are a distributed version
> of netlink..

Is there a code architecture draft somewhere?

Best regards,
Roberto Nibali, ratz
--
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