From mboxrd@z Thu Jan  1 00:00:00 1970
From: George Lefter <george.lefter@it-solutions.ro>
Date: Mon, 17 Nov 2003 23:39:48 +0000
Subject: Re: [LARTC] u32 match ip dst not working with 2.4.22?
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To: lartc@vger.kernel.org

i've just compiled 2.4.23-rc1 and now it works.
it seems the problem was indeed with 2.4.22.


George Lefter wrote:
> hi,
> 
> i have a simple configuration:
> hostA(192.168.100.44) <-----> hostB(192.168.100.45).
> 
> I want to shape the traffic from hostB to hostA to a maximum of 10kbps:
> hostB# tc qdisc add dev eth0 root handle 1:0 htb default 11
> hostB# tc class add dev eth0 parent 1:0 classid 1:1 htb \
>     rate 200kbps ceil 200kbps
> hostB# tc class add dev eth0 parent 1:1 classid 1:10 htb \
>     rate 10kbps ceil 10kbps
> hostB# tc class add dev eth0 parent 1:1 classid 1:11 htb \
>     rate 100kbps ceil 100kbps
> 
> bostB# tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 \
>     match ip dst 192.168.100.44 flowid 1:10
> 
> With this setup, a wget run on hostA downloading from hostB has an 
> average rate of 97.74 KB/s - it seems to be classified to the default 
> classid 1:11, not classid 1:10. Also, the class statistics below show 
> traffic accounted to class 1:11.
> 
> 
> tc details:
> hostB# tc -d -s qdisc ls dev eth0
> qdisc htb 1: r2q 10 default 11 direct_packets_stat 0 ver 3.12
>  Sent 1137520 bytes 1714 pkts (dropped 0, overlimits 2010)
> 
> hostB# tc -d -s class ls dev eth0
> class htb 1:11 parent 1:1 prio 0 quantum 10240 rate 800Kbit ceil 800Kbit 
> burst 2623b/8 mpu 0b cburst 2623b/8 mpu 0b level 0
>  Sent 1071226 bytes 711 pkts (dropped 0, overlimits 0)
>  rate 33475bps 22pps
>  lended: 711 borrowed: 0 giants: 0
>  tokens: 7557 ctokens: 7557
> 
> class htb 1:1 root rate 1600Kbit ceil 1600Kbit burst 3647b/8 mpu 0b 
> cburst 3647b/8 mpu 0b level 7
>  Sent 1137520 bytes 1714 pkts (dropped 0, overlimits 0)
>  rate 35547bps 53pps
>  lended: 0 borrowed: 0 giants: 0
>  tokens: 14336 ctokens: 14336
> 
> class htb 1:10 parent 1:1 prio 0 quantum 1024 rate 80Kbit ceil 80Kbit 
> burst 1701b/8 mpu 0b cburst 1701b/8 mpu 0b level 0
>  Sent 66294 bytes 1003 pkts (dropped 0, overlimits 0)
>  rate 2071bps 31pps
>  lended: 1003 borrowed: 0 giants: 0
>  tokens: 125919 ctokens: 125919
> 
> hostB# tc -d -s filter ls dev eth0
> filter parent 1: protocol ip pref 49152 u32
> filter parent 1: protocol ip pref 49152 u32 fh 800: ht divisor 1
> filter parent 1: protocol ip pref 49152 u32 fh 800::800 order 2048 key 
> ht 800 bkt 0 flowid 1:10
>   match c0a8642c/ffffffff at 16
> 
> tc binary downloaded from 
> http://luxik.cdi.cz/~devik/qos/htb/v3/htb3.6-020525.tgz.
> 
> hostB is a Slackware 9.1 running recompiled 2.4.22,
> cls_u32 and sch_htb loaded as modules.
> 
> 
> If instead of matching ip dst for hostA i match ip src for hostB,
> it works as expected - rate is 10Kb/s with the following:
> hostb# tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 \
>     match ip src 192.168.100.45 flowid 1:10
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