Re: [LARTC] Strange behavior deleting filters

[Andre Correa <andre.correa@pobox.com>]

Hi Rodrigo, tks for the answer. It sounds like a starting point but this 
is not that good if there are several filters pointing to classes with 
high load. In this case lower prio classes will really have higher priority.

Isn't it supposed to work as expected: delete only the right filter? May 
it be reported as a bug? Is it a known behavior?

tks...

Andre


Rodrigo P. Telles wrote:
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> Andre,
> 
> I've had the same problem when I try to remove one filter rule.
> This is ocurred when you have the same prio for all filter rules. I've 
> "solved"
> my problem using diferent "prio" values in filter rules.
> I don't now if this is a BUG !
> 
> Anything else ?
> 
> Telles
> 
> Andre Correa wrote:
> |
> | Hi list, I'm playing with tc and found a strange behavior when I try to
> | delete filters. For example, this simple scenario:
> |
> | tc qdisc add dev eth1 root handle 1: htb default 100
> | tc class add dev eth1 parent 1: classid 1:1 htb rate 128Kbit
> | tc class add dev eth1 parent 1: classid 1:2 htb rate 258Kbit
> | tc class add dev eth1 parent 1: classid 1:100 htb rate 32Kbit
> | tc filter add dev eth1 parent 1: protocol ip prio 1 u32 match ip src
> | 10.10.10.20 match ip dst 63.63.63.63 flowid 1:1
> | tc filter add dev eth1 parent 1: protocol ip prio 1 u32 match ip src
> | 10.10.10.20 flowid 1:2
> |
> | works just fine, but when I try to delete oen of the filters with
> | something like this:
> |
> | tc filter del dev eth1 parent 1: protocol ip prio 1 u32 match ip src
> | 10.10.10.20 flowid 1:2
> |
> | both filters are deleted.
> |
> | I've found a post from Dimitry V. Ketov in the kernel list on may/2003
> | with a situation like this one, but there are no answers.
> |
> | I'm using 2.4.23 and iptables 1.2.7a. Any clues what can be the cause?
> | I'm suposed to be able to delete filters separately right? May it be a 
> bug?
> |
> | Deleting the whole qdisc is not an opition in my setup and trying to
> | delete the parent class gives me a "device or resource busy" error
> | because of the filters. tc class del doesn't seen to delete its "child"
> | filter.
> |
> | tks for any information...
> |
> | Andre
> |
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> |
> |
> 
> - --
> - ------------------------------------------------------
> Rodrigo P. Telles <telles@devel-it.com.br>
> Gerente de Projetos - http://www.devel-it.com.br
> Devel-IT - Uma empresa do Grupo TDKOM
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