[LARTC] Fwmark and HTB: Mark not working!

[Shanker Balan <shanu@exocore.com>]

Hello:

For some reason, marked packets don't seem to be hitting the correct HTB
queues. This is my rule set:

tc qdisc add dev eth0 root handle 1: htb default 50
tc class add dev eth0 parent 1:  classid 1:1  htb \
	rate 128kbps ceil 128kbps burst 2k

tc class add dev eth0 parent 1:1 classid 1:2  htb \
	rate 64kbps ceil 64kbps burst 2k
tc class add dev eth0 parent 1:2 classid 1:10 htb \
	rate 56kbps ceil 64kbps burst 2k prio 4
tc class add dev eth0 parent 1:2 classid 1:20 htb \
	rate  8kbps ceil 64kbps burst 2k prio 5

tc class add dev eth0 parent 1:1 classid 1:30 htb \
	rate  8kbps ceil 16kbps  burst 2k prio 2
tc class add dev eth0 parent 1:1 classid 1:40 htb \
	rate 16kbps ceil 128kbps burst 2k prio 1
tc class add dev eth0 parent 1:1 classid 1:50 htb \
	rate 40kbps ceil 128kbps burst 2k prio 3

tc qdisc add dev eth0 parent 1:10 handle 10: sfq perturb 10
tc qdisc add dev eth0 parent 1:20 handle 20: sfq perturb 10
tc qdisc add dev eth0 parent 1:30 handle 30: sfq perturb 10
tc qdisc add dev eth0 parent 1:40 handle 40: sfq perturb 10
tc qdisc add dev eth0 parent 1:50 handle 50: sfq perturb 10

tc filter add dev eth0 parent 1:0 protocol ip prio 1 handle 1 fw classid 1:10
iptables -t mangle -A PREROUTING -i eth0 -p tcp -d 192.168.1.24 
	--dport 80 -j MARK --set-mark 1


No matter what, marked traffic are still handled by the the default
queue (1:50) instead of "1:10".

Here is my iptables and "tc -s qdisc" output:

# iptables -t mangle -L -v
Chain PREROUTING (policy ACCEPT 156K packets, 18M bytes)
 pkts bytes target     prot opt in     out     source
 destination         
  2739  151K MARK       tcp  --  eth0   any     anywhere
  godzilla.exocore.comtcp dpt:www MARK set 0x1 

# tc -s qdisc
qdisc sfq 50: dev eth0 quantum 1514b perturb 10sec 
 Sent 11461182 bytes 8185 pkts (dropped 0, overlimits 0) 

qdisc sfq 40: dev eth0 quantum 1514b perturb 10sec 
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0) 

qdisc sfq 30: dev eth0 quantum 1514b perturb 10sec 
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0) 

qdisc sfq 20: dev eth0 quantum 1514b perturb 10sec 
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0) 

qdisc sfq 10: dev eth0 quantum 1514b perturb 10sec 
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0) 

qdisc htb 1: dev eth0 r2q 10 default 50 dcache 0
 deq_util 1/1000000 deq_rate 1 trials_per_deq 0
 dcache_hits 0 direct_packets 0
 Sent 11461182 bytes 8185 pkts (dropped 0, overlimits 16658) 

As you can see, the byte count for the MARK rule is increasing but queue
1:10 is not utilized. Only 1:50 (the default) is working. If I replace
the "fw" with a "u32" filter, it works without issues.

System Details:

Debian Unstable
Kernel 2.4.18+XFS+HTB+WRR patches
Iproute 20010824-8 (Deb) (Already contains HTB Iproute patches)

I don't know how to debug this. IAC, I am recompiling my Kernel without
the WRR patches to see whether it makes a difference.

Thank you for your time.

-- Shanu

-- 
I love Mickey Mouse more than any woman I've ever known.
		-- Walt Disney
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