pfifo_fast as leaf qdisc for htb classes

Linux Advanced Routing and Traffic Control

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Thank you Andy! I did't find why I could't use the fw
match in ingress. Now it works.

Now I ran into another problem:
When I try to add a pfifo_fast leaf qdisc dor htb
classes it seg.-faults. Is pfifo_fast a special qdisc?
I can succesfully add other type of qdiscs.

I found that a similar problem was reported in
february on a MIPS architecture.

root@zefir:/usr/src# tc qdisc add dev eth0 root handle
1: htb default 10
root@zefir:/usr/src# tc class add dev eth0 parent 1:
classid 1:1 htb rate 100Mbit ceil 100Mbit burst 50k
cburst 150k
root@zefir:/usr/src# tc class del dev eth0 parent 1:
classid 1:1 htb rate 100Mbit ceil 100Mbit burst 50k
cburst 150k
root@zefir:/usr/src# tc class add dev eth0 parent 1:
classid 1:1 htb rate 90Mbit ceil 100Mbit burst 50k
cburst 150k
root@zefir:/usr/src# tc class add dev eth0 parent 1:
classid 1:10 htb rate 10Mbit ceil 100Mbit burst 50k
cburst 150k
root@zefir:/usr/src# tc qdisc add dev eth0 parent 1:1
handle 2: pfifo_fast
Segmentation fault
root@zefir:/usr/src# uname -a
Linux zefir 2.6.12.4 #1 Sun Aug 7 18:17:31 EEST 2005
i686 unknown unknown GNU/Linux
root@zefir:/usr/src# tc qdisc add dev eth0 parent 1:1
handle 2: sfq perturb 10
root@zefir:/usr/src#                                  
                        
I think htb and pfifo_fast assures a better QOS than
htb & sfq because I can priorize interactivity.

Thank you in advance for any sugestions.

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