LARTC - Jul 2002 - DSMARK and Filters

I have a root qdisc "DSMARK" with a CBQ qdisc attached in it
so I wanted to re classify the packets within the CBQ according to the mark they
have acquired at the DSMARK. But when I used a u32 filter "matching on the
ToS field" it failed, then I read that I have to use some kind of filter
called tcindex, but I really don''t know it''s syntax well, and
what''s the handles parameter in it .. etc.

Tarek Amr wrote:
> I have a root qdisc "DSMARK" with a CBQ qdisc attached in it
> so I wanted to re classify the packets within the CBQ according to the mark
> they have acquired at the DSMARK. But when I used a u32 filter
"matching
> on the ToS field" it failed,
Yes, dsmark only changes the DS/ToS field (if at all) when the packet
leaves dsmark, i.e. right before it hits the wire.
> then I read that I have to use some kind of filter called tcindex,
> but I really don''t know it''s syntax well, and
what''s the handles
> parameter in it .. etc.
Please read
ftp://icaftp.epfl.ch/pub/linux/diffserv/misc/dsid-01.ps.gz

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina         wa@almesberger.net /
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