[LARTC] Using filters without a handle

[Paul Evans <pevans@catholic.org>]

On April 26, 2003 01:01 am, Stef Coene wrote:
> On Saturday 26 April 2003 06:50, Paul Evans wrote:
> > Hi Stef,
> > You mean instead of a zillion of these:
> > $tc filter add dev $extif parent 1:0 protocol ip handle $var fw flowid
> > 1:$var
> >
> > It's just one of:
> > $tc filter add dev $extif parent 1:0 protocol ip fw
> > ?
> >
> > I see it doesn't error, but I haven't tried it on the real thing yet.
>
> It works.  If you add that filter, packets with mark 11 will end in class
> 1:11.  Actually you use a bery fast hash key so you don't need to check all
> the filters.
> But be aware.  Mark and classid is in hex.  So somtimes 10 is translated in
> to A.  So it's better to specify 0x10 for the mark so you are sure it's in
> hex.
>
> > Also, could I then add further filters *with* options and would they be
> > honored? It'd be very cool if so.
>
> Yes.  You can iuse the fw filter to put the packets in a class.  And you
> can add extra filters to that class to classify the packets in sub classes
> : 1:0
>   1:1
>     1:10
>     1:11
>
> $tc filter add dev $extif parent 1:0 protocol ip handle $var fw
> $tc filter add dev $extif parent 1:10 blabla flowid 1:10
> $tc filter add dev $extif parent 1:11 blabla flowid 1:11
>
> I know it can be done, but I never checked it my self.  So if it works, let
> me know :)  And if it works, I create an extra fas and update the howto.
> Stef

When I tried it for real:
RTNETLINK answers: Invalid argument

Used the line just as I suggested above.

-- 
Regards, Paul Evans


_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/