[LARTC] slowing down traffic to a certain port

From: Radu Maurer <a400@gmx.de>
To: lartc@vger.kernel.org
Subject: [LARTC] slowing down traffic to a certain port
Date: Sun, 13 Jul 2003 11:21:31 +0000	[thread overview]
Message-ID: <marc-lartc-105809536026951@msgid-missing> (raw)

This is my first attempt at understanding lartc:

I want to throttle outgoing bandwidth fo a certain tcp port and leave
other traffic the way it was.

so I put a prio qdisc at the root of eth0 (dummy priomap since i want to use
filters to switch bands):
$ tc qdisc add dev eth0 root handle 1: prio bands 2 priomap 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

then attach a tbf qdisc at 1:2 :
$ tc qdisc add dev eth0 parent 1:2 handle 20: tbf rate 2kbit buffer 100 limit 300

now i want traffic to port 4662 to be enqueued to the tbf qdisc:
$ tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32 match ip sport 4662 0xffff flowid 1:2
but it doesn't work:
RTNETLINK answers: Invalid argument

why? wrong syntax?

thanks
Radu

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