[LARTC] DSMARK and Filters

[LARTC] DSMARK and Filters

[Tarek Amr]

[-- Attachment #1: Type: text/plain, Size: 399 bytes --]

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.


[-- Attachment #2: Type: text/html, Size: 795 bytes --]

Re: [LARTC] DSMARK and Filters

[Werner Almesberger]

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 /
/_http://icapeople.epfl.ch/almesber/_____________________________________/
_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/