[pf4freebsd] Re: pf hack: use scrub rule to set TOS bits

[Max Laier]

Hallo Hendrik,

nette Idee! Aber ich sag's mal lieber gleich explizit: Wir machen keinen
"fork" vom OpenBSD Development. Soll heißen, auch wenn Dein Patch
einwandfrei läuft wird er nur aufgenommen nachdem er in OpenBSD ist. Ich
hoffe das bremst Deinen Enthusiasmus und Ideenreichtum nicht! Wir machen
natürlich gerne "Werbung" für gute Ideen, aber wie gesagt wir sind ein Port
kein Fork.

Keep the good work up! Gruß,
    Max

----- Original Message ----- 
From: "Hendrik Scholz" <hscholz at raisdorf.net>
To: <pf4freebsd at freelists.org>
Sent: Sunday, August 03, 2003 5:46 PM
Subject: [pf4freebsd] pf hack: use scrub rule to set TOS bits


> Hi!
>
> I've got pf 1.59 w/ ALTQ running and now get into the situation
> that outgoing packets are queued correctly but I don't have
> the chance to configure the opposite side (DSL access concentrator, Cisco
> router).
> I'm just hacking up pfctl and pf to recognize a rule like this:
>
> scrub out on $ext_if proto icmp from $internal to any tos 0x10 keep state
> or
> scrub out on $ext_if proto udp from $internal to any port 4000 tos 0x10
keep state
>
> This will set the ip_tos bits to 0x10 (if not set otherwise). I still
> have to conduct some tests (prolly using nemesis-icmp) to see whether
> my upstream routers will return the answer with the same tos bits.
>
> In case a) the destination host and b) the upstream router both make
> their queuing decisions based on the tos bits we might manage to
> influence our upstream routers behaviour and finally play Diablo
> while doing large <insert random traffic hogs> downloads.
>
> Since weather is nice and I have other things to hack on this might
> take a few days until it proofs stable.
>
> Just FYI, Hendrik
>
> -- 
> Hendrik Scholz - <hscholz at raisdorf.net> - http://raisdorf.net/
>
> drag me, drop me - treat me like an object
>
>