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Date: Tue, 08 Feb 2011 21:46:22 +0300
From: Sergey Matveychuk <sem@FreeBSD.org>
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To: Julian Elischer <julian@freebsd.org>
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Cc: freebsd-net@freebsd.org
Subject: Re: divert rewrite
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08.02.2011 20:03, Julian Elischer wrote:
>> 08.02.2011 19:08, rozhuk.im@gmail.com wrote:
>>> Did you try ng_ether + ng_ksocket?
>>> It can translate Ethernet frames incapsulated to udp to user space
>>> receiver.
>>
>> The idea is catch packets from firewall (ng_ipfw, ng_nat was mentioned
>> by mistake) and pass them to user space module that do some processing
>> and puts back the packets into firewall (for rules with `diverted'
>> keyword).
>
> yes, however did you try the ipfw netgraph keyword and the ng_ipfw node?
> I have also been wondering it it might not make sense to simpply
> replavce the diver code with
> a netgraph equivalent.. Using the ng_ipfw node one can almost do it with
> no changes as it is.

I've tried ng_socket+ng_ipfw. It gets incoming packets, but outgoing 
packets drops because of a tag having lost after leaving kernel space.
It looks like a magic can be done with ng_tag node, but really I could 
not tame it.

>
>>
>> It works now for IPv4 with `divert' and doesn't with IPv6.
>
> yes, I'm pondering the right fix for that..

I'm first to test it please :)