I have thr same problem with a similar ppc based processor (the MPC8245).
I tried to resolve the problem for three months without any result.
I noticed that the problem should be in the filters and that the behaviour is different if the traffic is local (to the router box) or to be forwarded.

Any idea?

-----Messaggio originale-----
Da: soyoung@taonetworks.com [mailto:soyoung@taonetworks.com]
Inviato: mercoledì 23 aprile 2003 8.05
A: Stef Coene
Cc: lartc@mailman.ds9a.nl
Oggetto: Re: [LARTC] [Q]About Using TC in MPC8250

MPC8250 is a CPU name produced by Motorola.
It is a kind of Motorola PowerPC processor. Linux can run on the MPC8250.

Every kernel functions regarding to TC CBQ looks working -
I followed the CBQ kernel code step by step and found no problems.
But the bandwidth I allocated is not guaranteed.

I think it is related to CPU characteristics,
but I don't have any specific knowledge about it.

I don't think the script is wrong, 'cause I used that script for other
linux (running on normal i386 machine) and it works good.

Anyway here is a script.

--

/sbin/tc qdisc del dev eth1 root handle 1:

/sbin/tc qdisc add dev eth1 root handle 1: cbq bandwidth 102400Kbit avpkt 1500 cell 8

/sbin/tc class add dev eth1 parent 1: classid 1:2 cbq bandwidth 102400Kbit rate 102Kbit allot 1514 cell 8 weight 10Kbit prio 3 maxburst 16 avpkt 1500 bounded

/sbin/tc filter add dev eth1 parent 1: protocol ip prio 3 u32 match ip src 10.0.10.72 match ip dst 10.0.0.47 flowid 1:2

On Tue, Apr 22, 2003 at 01:26:18PM +0200, Stef Coene wrote:
> On Tuesday 22 April 2003 13:18, soyoung@taonetworks.com wrote:
> > Hi,
> >
> > I'm running Linux 2.4.17 on MPC8250 CPU for bandwidth management with TC
> > CBQ. All the functions in CBQ looks working - including TC,
> > but the class can't use its allocated bandwidth,
> > so I can't use bandwidth management with TC on MPC8250.
> Can you be more specific?  What's your script?  How did you test it?
>
> > No external error founds when running TC.
> > I think the correctness for calculating bandwidth in each class is the
> > problem.
> >
> > Is there anyone who has run CBQ in TC on MPC8250? or do you have some good
> > idea to solve this problem?
> What's "MPC8250" ??
>
> Stef
>
> --
>
> stef.coene@docum.org
>  "Using Linux as bandwidth manager"
>      http://www.docum.org/
>      #lartc @ irc.oftc.net
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