[LARTC] u32 filter

[LARTC] u32 filter

[Kaustubh Phanse]

Hello!

What is the significance of "handle" in a u32 filter??

For example, if I have a HTB class 1:1 and three child classes 1:11, 1:12,
and 1:13. Within 1:11, I define dsmark, say 2:0, and let it mark packets
with certain DSCP. Now, using the u32 filter I need to classify packets of a
certain flow (e.g., based on src ip address and dest port), then can someone
give me an example of exactly how the u32 filter would look.

The following configuration does not seem to work (i.e., packets are not
getting marked!)...so I guess the problem is with my u32 filter

tc filter add dev eth0 parent 1:0 protocol ip prio 1 handle 1: \
	u32 divisor 1

tc filter add dev eth0 parent 1:1 prio 1 u32 \
	match ip src 192.168.1.12
	match ip protocol 17 0xff
	match ip dport 4984 0xffff
	flowid 2:0

Any help in this matter is greatly appreciated.
Thank you
regards
Kaustubh

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[LARTC] u32 filter

[Vitor Carlos Flausino]

Hi all.

I have the following queue:


tc qdisc add dev eth0 root handle 1:0 htb default 15


tc class add dev eth0 parent 1:0 classid 1:1 htb rate 100mbit ceil 100mbit

tc class add dev eth0 parent 1:1 classid 1:7 htb rate 64kbit ceil 64kbit
tc class add dev eth0 parent 1:1 classid 1:15 htb rate 102336kbit ceil 
100mbit

tc qdisc add dev eth0 parent 1:7 handle 10:0 sfq perturb 10
tc qdisc add dev eth0 parent 1:15 handle 20:0 sfq perturb 10

Now, my question is, the filter should be:

tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip 
57.227.234.22 flowid 1:7

or,

tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip 
57.227.234.22 flowid 10:0

?

What about the default?

Thankx,
-vcf

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Re: [LARTC] u32 filter

[Michael Yuan]

Looking at the LARTC document on page 65, the sample htb configuration,
it should be the first one.

cheers
yuan

On Tue, 2003-05-06 at 19:10, Vitor Carlos Flausino wrote:
> Hi all.
> 
> I have the following queue:
> 
> 
> tc qdisc add dev eth0 root handle 1:0 htb default 15
> 
> 
> tc class add dev eth0 parent 1:0 classid 1:1 htb rate 100mbit ceil 100mbit
> 
> tc class add dev eth0 parent 1:1 classid 1:7 htb rate 64kbit ceil 64kbit
> tc class add dev eth0 parent 1:1 classid 1:15 htb rate 102336kbit ceil 
> 100mbit
> 
> tc qdisc add dev eth0 parent 1:7 handle 10:0 sfq perturb 10
> tc qdisc add dev eth0 parent 1:15 handle 20:0 sfq perturb 10
> 
> Now, my question is, the filter should be:
> 
> tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip 
> 57.227.234.22 flowid 1:7
> 
> or,
> 
> tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip 
> 57.227.234.22 flowid 10:0
> 
> ?
> 
> What about the default?
> 
> Thankx,
> -vcf
> 
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Re: [LARTC] u32 filter

[Stef Coene]

On Tuesday 06 May 2003 13:10, Vitor Carlos Flausino wrote:
> Hi all.
>
> I have the following queue:
>
>
> tc qdisc add dev eth0 root handle 1:0 htb default 15
>
>
> tc class add dev eth0 parent 1:0 classid 1:1 htb rate 100mbit ceil 100mbit
>
> tc class add dev eth0 parent 1:1 classid 1:7 htb rate 64kbit ceil 64kbit
> tc class add dev eth0 parent 1:1 classid 1:15 htb rate 102336kbit ceil
> 100mbit
>
> tc qdisc add dev eth0 parent 1:7 handle 10:0 sfq perturb 10
> tc qdisc add dev eth0 parent 1:15 handle 20:0 sfq perturb 10
>
> Now, my question is, the filter should be:
>
> tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip
> 57.227.234.22 flowid 1:7
>
> or,
>
> tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip
> 57.227.234.22 flowid 10:0
>
> ?
>
> What about the default?
The default is the minor number, so the second number in 1:15.  So 15 like you 
did.
For the filter, 10:0 is connected to 1:7.  So all traffic placed in 1:7 flows 
through 10:0.  So the filter should point to 1:7.  So the first filter rule 
is the one you need.

Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

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[LARTC] u32 filter

[Esteban]

is there any command to see how my u32 filters have been applyed?
in case not, i should use iptables & fwmarks right?
thanks and greets


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RE: [LARTC] u32 filter

[Harkisoon Sharan (CCI-Gainesville)]

tc -s filter ls dev eth0  or whatever device you are using

you can also check out the qdiscs and classes.  The classes actually tell you how much bandwidth has passed, which is pretty handy.

tc -s qdisc ls dev...
tc -s class ls dev...

-----Original Message-----
From: Esteban [mailto:listas@dejawu.com.ar]
Sent: Friday, May 23, 2003 5:58 AM
To: Lartc
Subject: [LARTC] u32 filter


is there any command to see how my u32 filters have been applyed?
in case not, i should use iptables & fwmarks right?
thanks and greets


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