Re: tc { class | filter } does not work

Linux Advanced Routing and Traffic Control

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Hi Stef!

> > I'm trying to use tc on linux 2.4.20-rc1aa with iproute 20010824-8 (latest
> > debian package), but I'm having no joy.
> The latest version is iproute2-2.4.7-now-ss020116.  I recommend using it.
> 
> > I've attached my kernel config in case you want to check whether I
> > configured the correct stuff (but I pretty much enabled everything - the
> > only odd thing is that I couldn't configure CONFIG_RTNETLINK and
> > CONFIG_NETLINK into the kernel since those options are not available
> > anymore (selected by default nowadays?))
> From your attached config :
> # CONFIG_NETLINK_DEV is not set
> I suggest enabling it and try again.

Ok, I tried a kernel with CONFIG_NETLINK_DEV compiled in and the tc from
iproute2-2.4.7-now-ss020116-try.tar.gz but I still can't see any entries in
the class or filter list. After adding these rules:

------------< snip <------< snip <------< snip <------------
tc qdisc add dev eth0 root handle 1: cbq bandwidth 10Mbit cell 8 avpkt 1000 \
mpu 64

tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 10Mbit rate 10Mbit \
allot 1514 cell 8 weight 1Mbit prio 8 maxburst 20 avpkt 1000

tc class add dev eth0 parent 1:1 classid 1:2 cbq bandwidth 10Mbit rate 3Mbit \
allot 1514 cell 8 weight 100Kbit prio 3 maxburst 20 avpkt 1000 split 1:0

tc class add dev eth0 parent 1:1 classid 1:3 cbq bandwidth 10Mbit rate 8Mbit \
allot 1514 cell 8 weight 800Kbit prio 7 maxburst 20 avpkt 1000 split 1:0

tc filter add dev eth0 parent 1:0 protocol ip prio 100 route
------------< snip <------< snip <------< snip <------------

I get:

------------< snip <------< snip <------< snip <------------
root@rana:~# tc filter show
root@rana:~# tc class show
root@rana:~# tc qdisc show
qdisc cbq 1: dev eth0 rate 10Mbit (bounded,isolated) prio no-transmit
root@rana:~#
------------< snip <------< snip <------< snip <------------

As you can see the qdisc is added, but the class and filter entries don't
seem to work.

If I type the same filter rule multiple times, it allows it so I don't think
it is added at all. The class entries seem to be added because I get EEXIST
if I add the same rule multiple times, but it does not show up in ``tc class
show'' - any ideas?

-- 

Regards
 Abraham

Beware of the Turing Tar-pit in which everything is possible but nothing of 
interest is easy.

___________________________________________________
 Abraham vd Merwe [ZR1BBQ] - Frogfoot Networks
 P.O. Box 3472, Matieland, Stellenbosch, 7602
 Cell: +27 82 565 4451 Http: http://www.frogfoot.net
 Email: abz@frogfoot.net

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