[LARTC] u32 match ip dst not working with 2.4.22?

From: George Lefter <george.lefter@it-solutions.ro>
To: lartc@vger.kernel.org
Subject: [LARTC] u32 match ip dst not working with 2.4.22?
Date: Sun, 16 Nov 2003 14:08:34 +0000	[thread overview]
Message-ID: <marc-lartc-106899502615291@msgid-missing> (raw)

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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