LARTC - May 2006 - TCNG HTB Branching the class not working. (bug or what)

Hi,
I am new to traffic control in linux. However, i have able to grab many
new knowledge in recent days. I find tcng somewhat easy to use (although
lack proper doc. of its usage).

I want to control traffic of several IP Addresses connected to my LANSIDE.
What I want is , i want to separate certain bandwidth to all my clients.

dev "etho" {
htb() {
    class ( rate 400kbps, ceil 400kbps) if ip_dst == 192.168.0.9
    class ( rate 400kbps, ceil 400kbps) if ip_dst == 192.168.0.10
..... and so on for every IP.
}
It compiles and work well with no syntax error.

However For each IP I want to prioritize the traffic. Say, priority 1 for
http traffic and priority 2 for other, each host limiting within their
allocated bandwidth.

I tried the following configuration, and also compiled without syntax
error. But it did not work. Starnge, when I looked tc files (#tcc
files.tc), it generates unusal tc commnds. I guess, its a bug on tcc
compiler or it happens to my box due to some misconfgurations?

Please look at the following example where I have a problem

[root@server traffic]# cat test1.tc
#include "fields.tc"
#include "ports.tc"

#define LANSIDE eth0
#define WANSIDE eth1

/*######### Shape DOWNLOAD Traffic ############*/
/*#############################################*/
dev LANSIDE {
        htb() {
                //Main link bandwidth
                class (rate 128kbps, ceil 128kbps) {
                  //Client 1
                  class (rate 128kbps, ceil 128kbps) if ip_dst =192.168.0.9 {
                     class (prio 1, rate 128kbps, ceil 128kbps) if
tcp_sport == 80;
                     class (prio 2, rate 128kbps, ceil 128kbps) if 1;
                }
                //Client 2
                class (rate 64kbps, ceil 64kbps) if ip_dst == 192.168.0.20 {
                   class (prio 1, rate 64kbps, ceil 64kbps) if tcp_sport
==80;
                   class (prio 2, rate 128kbps, ceil 128kbps) if 1;
                }
             } // end of root class


        } //End of qdiscs (HTB)
} //End of device (LANSIDE)


[root@server traffic]# tcc -r test1.tc
tc qdisc del dev eth0 root

# ================================ Device eth0
===============================
tc qdisc add dev eth0 handle 1:0 root htb
tc class add dev eth0 parent 1:0 classid 1:1 htb rate 16000bps ceil 16000bps
tc class add dev eth0 parent 1:1 classid 1:2 htb rate 16000bps ceil 16000bps
tc class add dev eth0 parent 1:2 classid 1:3 htb rate 16000bps ceil
16000bps prio 1
tc class add dev eth0 parent 1:2 classid 1:4 htb rate 16000bps ceil
16000bps prio 2
tc class add dev eth0 parent 1:1 classid 1:5 htb rate 8000bps ceil 8000bps
tc class add dev eth0 parent 1:5 classid 1:6 htb rate 8000bps ceil 8000bps
prio 1
tc class add dev eth0 parent 1:5 classid 1:7 htb rate 16000bps ceil
16000bps prio 2
tc filter add dev eth0 parent 1:1 protocol all prio 1 u32 match u32
0xc0a80009 0xffffffff at 16 classid 1:2
tc filter add dev eth0 parent 1:1 protocol all prio 1 handle 1:0:0 u32
divisor 1
tc filter add dev eth0 parent 1:1 protocol all prio 1 u32 match u8 0x6
0xff at 9 offset at 0 mask 0f00 shift 6 eat link 1:0:0
tc filter add dev eth0 parent 1:1 protocol all prio 1 handle 1:0:1 u32 ht
1:0:0 match u16 0x50 0xffff at 0 classid 1:3
tc filter add dev eth0 parent 1:1 protocol all prio 1 u32 match u32 0x0
0x0 at 0 classid 1:4


SEE here we haven''t got any u32 filter for classes 1:5, 1:6 or 1:7.
What
is the problem? Is it a bug?? As each class has filter, defines in .tc
file why tcc could not make a filter for this.

One thing, I haven''t succeeded in using tcng branching the class aas
above. Even a simple configuration (although it compiles). But it works if
I do not branch any class.

I will appreciate your help.

With regds,
Rajendra Adhikari
Subisucable Internet
Kathmandu, Nepal.