LARTC - Sep 2007 - Can we use 2 tc filter rules with the same prio

Hi ALL,

I am using below script for DOWNLOADING. it is only for HTTP and HTTPS.

I have given the same prio for both. (i.e prio 1).

pls see my script given below. (last 2 lines of the script where I have
highlighted in BOLD letters)

Can I have 2 tc filter rules with the same prio?

What is the proper method to write?

MY SCRIPT IS BELOW

#traffic shaping on eth1 (Downloading)

INTERFAZ_LAN=eth1
FULLBANDWIDTH=256
BANDWIDTH4LAN=64


tc qdisc del root dev $INTERFAZ_LAN

tc qdisc add dev $INTERFAZ_LAN root handle 1: htb r2q 4
tc class add dev $INTERFAZ_LAN parent 1: classid 1:2 htb rate
"$FULLBANDWIDTH"Kbit
tc class add dev $INTERFAZ_LAN parent 1: classid 1:5 htb rate
"$BANDWIDTH4LAN"Kbit
tc qdisc add dev $INTERFAZ_LAN parent 1:5 handle 5: sfq perturb 10
tc filter add dev $INTERFAZ_LAN parent 1: protocol ip prio 1 u32 match ip
sport 80 0xffff match ip dst 192.168.102.0/24 classid 1:5
tc filter add dev $INTERFAZ_LAN parent 1: protocol ip prio 1 u32 match ip
sport 443 0xffff match ip dst 192.168.102.0/24 classid 1:5



YOUR COMMENTS NEEDED.

-- 
Thank you
Indunil Jayasooriya


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Indunil Jayasooriya wrote:
> Hi ALL,
> 
> I am using below script for DOWNLOADING. it is only for HTTP and HTTPS.
> 
> I have given the same prio for both. (i.e prio 1).
> 
> pls see my script given below. (last 2 lines of the script where I have
> highlighted in BOLD letters)
> 
> Can I have 2 tc filter rules with the same prio?
> 
> What is the proper method to write?
> 
> MY SCRIPT IS BELOW
> 
> #traffic shaping on eth1 (Downloading)
> 
> INTERFAZ_LAN=eth1
> FULLBANDWIDTH=256
> BANDWIDTH4LAN=64
> 
> 
> tc qdisc del root dev $INTERFAZ_LAN
> 
> tc qdisc add dev $INTERFAZ_LAN root handle 1: htb r2q 4
> tc class add dev $INTERFAZ_LAN parent 1: classid 1:2 htb rate
> "$FULLBANDWIDTH"Kbit
> tc class add dev $INTERFAZ_LAN parent 1: classid 1:5 htb rate
> "$BANDWIDTH4LAN"Kbit
> tc qdisc add dev $INTERFAZ_LAN parent 1:5 handle 5: sfq perturb 10
> tc filter add dev $INTERFAZ_LAN parent 1: protocol ip prio 1 u32 match ip
> sport 80 0xffff match ip dst 192.168.102.0/24 classid 1:5
> tc filter add dev $INTERFAZ_LAN parent 1: protocol ip prio 1 u32 match ip
> sport 443 0xffff match ip dst 192.168.102.0/24 classid 1:5
>
In this case they should be OK and execute in order of entry because 
they are the same sort of match.

You can always check with tc -s filter ls dev ...

Sometimes you need different prios or the rules will just not work/throw 
an error/work the wrong order.

Andy.