[LARTC] shapping over the same interface

[Fernando Sancho <fsancho@inf-cr.uclm.es>]

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Hi all
I'm new to the list and new to tc

I'm triying to shape incoming and outgoing traffic for every IP in a
LAN. I'm using cbq classes because i need to use cbq.init script
(partner's restrictions). Well, according to cbq.init documentation i
have to define two classes for every IP

#cbq-0002-incoming-192.168.0.2
DEVICE=eth0,10Mbit,1Mbit
RULE=,192.168.0.2
BOUNDED=yes
PRIO=5
RATE=256Kbit
WEIGHT=25.6Kbit
LEAF=sfq

#cbq-0003-outgoing-192.168.0.2
DEVICE=eth0,10Mbit,1Mbit
RULE=192.168.0.2,
BOUNDED=yes
PRIO=5
RATE=64Kbit
WEIGHT=6.4Kbit
LEAF=sfq

The behavior of this es very extrange because all traffic from and to
192.168.0.2 is shaped by cbq-0002-incoming-192.168.0.2 

The code equivalent to that classes is this:
----------------------------
tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 1 cbq bandwidth 10Mbit avpkt 1000 cell
8
tc class change dev eth0 root cbq weight 1Mbit allot 1514

tc class add dev eth0 parent 1: classid 1:2 cbq bandwidth 10Mbit rate
256Kbit weight 25.6 prio 5 allot 1514 cell 8 maxburst 20 avpkt 1000
bounded
tc qdisc add dev eth0 parent 1:2 handle 2 sfq perturb 10
tc filter add dev eth0 parent 1:0 protocol ip prio 100 u32 match ip dst
192.168.0.2 classid 1:2

tc class add dev eth0 parent 1: classid 1:3 cbq bandwidth 10Mbit rate
64Kbit weight 6.4Kbit prio 5 allot 1514 cell 8 maxburst 20 avpkt 1000
bounded
tc qdisc add dev eth0 parent 1:3 handle e sfq perturb 10
tc filter add dev eth0 parent 1:0 protocol ip prio 100 u32 match ip src
192.168.0.2 classid 1:3
------------------------------

I don't know why a IP packet with src IP=192.168.0.2 is captured by a
filter who says very clear that it will only takes packets where dst IP
is 192.168.0.2

I'm using RedHat 7.3 with default kernel (2.4.18-13), another time,
partner's restricctions, eth0 is the private side of the gateway.

Thanks in advance.

PD: Sorry about my broken english.

-- 
Fernando Sancho Glez-Calero
E.S. de Informática de Ciudad Real
Universidad de Castilla la Mancha
Profesor Asociado
Dpto. Arquitectura y Redes de Computadores.
Tlf: +34 926295300 ext:6216, 3705, 6217

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