Re: Creating an equivalent to ESFQ using flow classifier

["Nikolay S. Rybaloff" <nowhere@hakkenden.ath.cx>]

Hi Andrew,

That's right, you have configured hashing based on src/dst address +
src/dst port + protocol, which is almost classical SFQ hash. In your
case you should try only nfct-src, which will create queues per source
IP and service these queues fairly within htb class.

В Вск, 15/03/2009 в 16:29 +0000, Andrew Beverley пишет:
> I have a server which I am using to share an ADSL line between a number of
> users. I am successfully shaping traffic based on type using 4 different
> classes, but I also want to share traffic within those classes evenly
> between computers (rather than between connections). I used to use ESFQ for
> this, but am trying to move to the new flow classifier as described in
> http://www.mail-archive.com/netdev@vger.kernel.org/msg60634.html
> 
> I have set up the following rules. However, if I start 4 downloads on one
> PC and 1 download on another PC, then the first PC will get 4/5 of the
> available bandwidth and the second PC one 1/5. I would expect them to get
> half each. I am using HTB to shape between each class.
> 
> # Add a HTB qdisc to the root device
> tc qdisc add dev eth0 root handle 1: htb
> 
> # Rate limit it
> tc class add dev eth0 parent 1: classid 1:1 htb rate 2200kbit
> 
> # Add 4 classes to it for different traffic
> tc class add dev eth0 parent 1:1  classid 1:10 htb \
>         rate 100kbit ceil 100kbit prio 0
> tc class add dev eth0 parent 1:1  classid 1:30 htb \
>         rate 1000kbit ceil 1000kbit prio 1
> tc class add dev eth0 parent 1:1  classid 1:40 htb \
>         rate 1000kbit ceil 1000kbit prio 2
> tc class add dev eth0 parent 1:1  classid 1:60 htb \
>         rate 100kbit ceil 100kbit prio 3
> 
> # Add SFQ qdisc to each HTB class
> tc qdisc add dev eth0 parent 1:10 handle 10: 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 1:60 handle 60: sfq perturb 10
> 
> # Filter the traffic to each class based on MARK
> tc filter add dev eth0 parent 1:0 protocol ip handle 10 fw flowid 1:10
> tc filter add dev eth0 parent 1:0 protocol ip handle 30 fw flowid 1:30
> tc filter add dev eth0 parent 1:0 protocol ip handle 40 fw flowid 1:40
> tc filter add dev eth0 parent 1:0 protocol ip handle 60 fw flowid 1:60
> 
> # Share traffic between each PC evenly
> tc filter add dev eth0 parent 10: protocol ip handle 10 flow hash keys \
>         nfct-src,nfct-dst,proto,nfct-proto-src,nfct-proto-dst divisor 1024
> tc filter add dev eth0 parent 30: protocol ip handle 30 flow hash keys \
>         nfct-src,nfct-dst,proto,nfct-proto-src,nfct-proto-dst divisor 1024
> tc filter add dev eth0 parent 40: protocol ip handle 40 flow hash keys \
>         nfct-src,nfct-dst,proto,nfct-proto-src,nfct-proto-dst divisor 1024
> tc filter add dev eth0 parent 60: protocol ip handle 60 flow hash keys \
>         nfct-src,nfct-dst,proto,nfct-proto-src,nfct-proto-dst divisor 1024
> 
> 
> It is the last part that I am unsure about. I do not get any errors with
> the commands, but they do not seem to make any difference to the shaping.
> 
> I am using linux-2.6.26 on Debian Lenny but have also tried linux-2.6.28
> 
> Thanks in advance
> 
> Andy Beverley
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