happen last, just like normal device qdiscs. Meaning, you can't send packets to
IMQ, then return to iptables for more mangling :/
Also, can't use MARK because I'm already using it for traffic prioritization
across 32 levels, and CLASSIFY is no good for this since it only works on a
leaf class.
I know I can sort traffic with filters, but I don't think it's possible to do any packet matching and mangling with them? I may have to just modify the source code :/
Dan-
Quoting George Alexandru Dragoi <waruiinu@xxxxxxxxx>:
You can try with IMQ, which probably is not wanted for a production server. You can also mark the pachets which have some DSCP bits, then use u32 with the mark match (Probably Catalin's implementation), i think it is even in some latest 2.6 kernels, also don't forget to use a new iproute2 :)
On Wed, 16 Feb 2005 11:12:46 +0200 (EET), Catalin(ux aka Dino) BOIE <util@xxxxxxxxxxxxxxx> wrote:On Tue, 15 Feb 2005, Dan Cox wrote:
> I'm successfully using HTB + GRED to shape traffic based on the DSCP field. I
> would like to strip the DSCP and possibly replace it with normal ToS bits on
> egress traffic leaving my network. Leaving DSCP set is pointless, and could
> potentially cause problems with some ISPs that use DSCP internally I suppose.
> Setting ToS bits would seem ideal as most networks still honor it to varying
> degrees.
>
> The problem is I can see no way of doing this. Since DSCP is needed in the
> qdiscs for shaping, it can't be mangled with iptables. According to the packet
> flow diagram, there doesn't appear to be any other opportunity to mangle the
> packets in this manor. Will I need to insert another router in the chain just
> to do this? :(
You can clone the GRED qdisc code and modify it to overwrite the DSCP bits.
> > -- > Dan- > _______________________________________________ > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ >
--- Catalin(ux aka Dino) BOIE catab at deuroconsult.ro http://kernel.umbrella.ro/ _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
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