I can see qdisc/prio/bfifo filled by datas but can't see any traffic prioritization

Hi,

My gateway server (192.168.0.1) is also a brutal adsl up/downloader.
I want my local network clients to get though this brute box without
being slowed.

I used iptables to mark the packets and a prio root qdisc with
3 bfifo queues with 3 filters :

# iptables script on the gateway
iptables -t mangle -A FORWARD -s 192.168.0.10 -o ppp+ -j MARK --set-mark 5
iptables -t mangle -A FORWARD -s 192.168.0.11 -o ppp+ -j MARK --set-mark 6
iptables -t mangle -A OUTPUT -o ppp+ -j MARK --set-mark 7

# tc script on the gateway
tc qdisc add dev ppp0 root handle 1: prio
tc qdisc add dev ppp0 parent 1:1 handle 10: bfifo limit 10000000
tc qdisc add dev ppp0 parent 1:2 handle 20: bfifo limit 1000
tc qdisc add dev ppp0 parent 1:3 handle 30: bfifo limit 1000

tc filter add dev ppp0 protocol ip parent 1:0 prio 1 handle 5 fw flowid 1:1
tc filter add dev ppp0 protocol ip parent 1:0 prio 1 handle 6 fw flowid 1:2
tc filter add dev ppp0 protocol ip parent 1:0 prio 1 handle 7 fw flowid 1:3

-------------

It seems that the routing works accordingly. See the stats given by :
iptables -t mangle -L -v --line-numbers
tc -s -d qdisc show

Chain FORWARD (policy ACCEPT 878 packets, 654K bytes)
num pkts bytes target prot opt in out source destination
1 521 632K MARK all -- any ppp+ bigpc.home anywhere MARK set 0x5
2 0 0 MARK all -- any ppp+ pthp.home anywhere MARK set 0x6

Chain OUTPUT (policy ACCEPT 8917 packets, 3253K bytes)
num pkts bytes target prot opt in out source destination
1 8507 3210K MARK all -- any ppp+ anywhere anywhere MARK set 0x7

qdisc bfifo 30: dev ppp0 limit 1000b
Sent 3209535 bytes 8507 pkts (dropped 0, overlimits 0)

qdisc bfifo 20: dev ppp0 limit 1000b
Sent 40 bytes 1 pkts (dropped 0, overlimits 0)

qdisc bfifo 10: dev ppp0 limit 10000000b # huge queue size !
Sent 631722 bytes 521 pkts (dropped 0, overlimits 0)

qdisc prio 1: dev ppp0 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
Sent 3841297 bytes 9029 pkts (dropped 0, overlimits 0)
-------------

However I can't see any speed improvement on the client side. My upload
traffic is still slowed by the gateway (OUTPUT) traffic.

Why didn't the prio qdisc block the lower traffic in bfifo 1:3 ???

Thanks

PS
the gateway is running Mandrake 9.2
iproute2-2.4.7

OK I gave up the prio qdisc. It works with an htb qdisc.

But even within the htb qdiscs, i didn't succeed in seing a
"prio effect" like in :
tc class add ... classid 1:12 htb ... prio 0
tc class add ... classid 1:14 htb ... prio 1