[LARTC] how to add my own traffic scheduler to TC

[LARTC] how to add my own traffic scheduler to TC

[Kennedy Cheng]

What are the steps needed to add my own traffic scheduler to TC?

My understanding is that I need to do something in the net/sched/
directory: add a schedular eg sch_blue.c, change the Makefile, config.in
and sch_api.c; add the appropriate qopt, xstats struct... in the
include/linux/pkt_sched.h. I've got it all compiled without warnings or
error. When I typed "tc add dev eth0 root blue limit 1000kB......", it
complained "Unknown qdisc "blue", hence option "limit" is unparsable".
When I typed "tc add dev eth0 root red limit 1000kB.....", it worked
fine (of course).

The code I wrote was a complete copy of the sch_red.c, with text changed
to blue instead of red. TC is not happy with my blue scheduler. What
have I done wrong? Have I missed something?

Linux Kernel version 2.4.20-8

Many Thanks,
Kennedy


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Re: [LARTC] how to add my own traffic scheduler to TC

[Roy]

TC is like iptables, you need to add suport to tc binary for your module,
else you wont be able to configure it.
I dont know how to do this , but try to find some analogy with other modules
you will need to modify tc makefile, and add aditional module.



----- Original Message ----- 
From: "Kennedy Cheng" <kennedy.cheng@jungle.bt.co.uk>
To: <lartc@mailman.ds9a.nl>
Sent: Wednesday, March 03, 2004 5:17 PM
Subject: [LARTC] how to add my own traffic scheduler to TC


> What are the steps needed to add my own traffic scheduler to
> TC?
>
> My understanding is that I need to do something in the net/sched/
> directory: add a schedular eg sch_blue.c, change the Makefile, config.in
> and sch_api.c; add the appropriate qopt, xstats struct... in the
> include/linux/pkt_sched.h. I've got it all compiled without warnings or
> error. When I typed '"'tc add dev eth0 root blue limit 1000kB......'"', it
> complained '"'Unknown qdisc '"'blue'"', hence option '"'limit'"' is
> unparsable'"'.
> When I typed '"'tc add dev eth0 root red limit 1000kB.....'"', it worked
> fine (of course).
>
> The code I wrote was a complete copy of the sch_red.c, with text changed
> to blue instead of red. TC is not happy with my blue scheduler. What
> have I done wrong? Have I missed something?
>
> Linux Kernel version 2.4.20-8
>
> Many Thanks,
> Kennedy
>
>
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>

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http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Re: [LARTC] how to add my own traffic scheduler to TC

[Kennedy Cheng]

Thanks Roy, I found the answers. I didn't know I had to modify the kernel QoS
library (which I did) as well as the iproute2 library (which I didn't). It is
working now :)

Thanks,
Kennedy


Roy wrote:

> TC is like iptables, you need to add suport to tc binary for your module,
> else you wont be able to configure it.
> I dont know how to do this , but try to find some analogy with other modules
> you will need to modify tc makefile, and add aditional module.
>
> ----- Original Message -----
> From: "Kennedy Cheng" <kennedy.cheng@jungle.bt.co.uk>
> To: <lartc@mailman.ds9a.nl>
> Sent: Wednesday, March 03, 2004 5:17 PM
> Subject: [LARTC] how to add my own traffic scheduler to TC
>
> > What are the steps needed to add my own traffic scheduler to
> > TC?
> >
> > My understanding is that I need to do something in the net/sched/
> > directory: add a schedular eg sch_blue.c, change the Makefile, config.in
> > and sch_api.c; add the appropriate qopt, xstats struct... in the
> > include/linux/pkt_sched.h. I've got it all compiled without warnings or
> > error. When I typed '"'tc add dev eth0 root blue limit 1000kB......'"', it
> > complained '"'Unknown qdisc '"'blue'"', hence option '"'limit'"' is
> > unparsable'"'.
> > When I typed '"'tc add dev eth0 root red limit 1000kB.....'"', it worked
> > fine (of course).
> >
> > The code I wrote was a complete copy of the sch_red.c, with text changed
> > to blue instead of red. TC is not happy with my blue scheduler. What
> > have I done wrong? Have I missed something?
> >
> > Linux Kernel version 2.4.20-8
> >
> > Many Thanks,
> > Kennedy
> >
> >
> > _______________________________________________
> > LARTC mailing list / LARTC@mailman.ds9a.nl
> > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
> >

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