Re: [LARTC] Kernel options for QoS

Re: [LARTC] Kernel options for QoS

[Stef Coene]

On Thursday 29 May 2003 22:12, Mathieu MALAISE wrote:
> Hello All,
>
> I'm new to QoS under Linux so please be indulgent
> with the following question.
>
> I try to run tc under Linux 2.4.20, my kernel has the
> following options:
>
> CONFIG_PACKET=y
> # CONFIG_PACKET_MMAP is not set
> CONFIG_NETLINK=y
> CONFIG_NETLINK_DEV=y
> CONFIG_NETFILTER=y
> # CONFIG_NETFILTER_DEBUG is not set
> # CONFIG_FILTER is not set
> CONFIG_UNIX=y
> CONFIG_INET=y
> CONFIG_IP_MULTICAST=y
> CONFIG_IP_ADVANCED_ROUTER=y
> # CONFIG_IP_PNP is not set
> CONFIG_NET_IPIP=m
> # CONFIG_NET_IPGRE is not set
> # CONFIG_IP_MROUTE is not set
> # CONFIG_INET_ECN is not set
> CONFIG_SYN_COOKIES=y
> [...]
> # QoS and/or fair queueing
> #
> CONFIG_NET_SCHED=y
> CONFIG_NET_SCH_CBQ=y
> CONFIG_NET_SCH_HTB=y
> CONFIG_NET_SCH_CSZ=y
> CONFIG_NET_SCH_PRIO=y
> CONFIG_NET_SCH_RED=y
> CONFIG_NET_SCH_SFQ=y
> CONFIG_NET_SCH_TEQL=y
> CONFIG_NET_SCH_TBF=y
> CONFIG_NET_SCH_GRED=y
> CONFIG_NET_SCH_DSMARK=y
> CONFIG_NET_SCH_INGRESS=y
> CONFIG_NET_QOS=y
> CONFIG_NET_ESTIMATOR=y
> # CONFIG_NET_CLS is not set
>
> but when I try to do:
>
> [root@mysystem]# tc qdisc add dev ppp0 root tbf rate 128kbit latency 50ms
> burst 1540
>
> I get this:
> RTNETLINK answers: Invalid argument
>
> syslog says:
> modprobe: Can't locate module sch_tbf
>
> if I compile it as a module, the module fails to load anyway (some
> unresolved symbols)...
Have you booted from your recompiled kernel?
If not, you are trying to load to module in the wrong kernel and that's why 
you get the inresovled symboles problem.

Stef

-- 

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

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[LARTC] Kernel options for QoS

[Mathieu MALAISE]

Hello All, 

I'm new to QoS under Linux so please be indulgent 
with the following question.

I try to run tc under Linux 2.4.20, my kernel has the
following options:

CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set 
CONFIG_NETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
# CONFIG_FILTER is not set
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
# CONFIG_IP_PNP is not set   
CONFIG_NET_IPIP=m
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_MROUTE is not set
# CONFIG_INET_ECN is not set
CONFIG_SYN_COOKIES=y
[...]
# QoS and/or fair queueing
#
CONFIG_NET_SCHED=y
CONFIG_NET_SCH_CBQ=y
CONFIG_NET_SCH_HTB=y
CONFIG_NET_SCH_CSZ=y
CONFIG_NET_SCH_PRIO=y
CONFIG_NET_SCH_RED=y
CONFIG_NET_SCH_SFQ=y
CONFIG_NET_SCH_TEQL=y
CONFIG_NET_SCH_TBF=y
CONFIG_NET_SCH_GRED=y
CONFIG_NET_SCH_DSMARK=y
CONFIG_NET_SCH_INGRESS=y
CONFIG_NET_QOS=y
CONFIG_NET_ESTIMATOR=y
# CONFIG_NET_CLS is not set

but when I try to do:

[root@mysystem]# tc qdisc add dev ppp0 root tbf rate 128kbit latency 50ms burst 1540

I get this:
RTNETLINK answers: Invalid argument

syslog says:
modprobe: Can't locate module sch_tbf

if I compile it as a module, the module fails to load anyway (some unresolved symbols)...

Do I miss an option that should be set in the kernel .config file ?

Thanks for your help,
Mathieu.

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Re: [LARTC] Kernel options for QoS

[Stef Coene]

On Friday 30 May 2003 09:04, mathieu.malaise@etu.utc.fr wrote:
> Actually yes, its the new kernel.
If you booted from your new kernel and you can't load the module, recompile 
everything from scratch and reboot from the kernel again.
cd /usr/src/linux ; make clean oldconfig deb bzImage modules modules_install

> I've read on this mailing-list that CONFIG_NETLINK doesn't exist
> anymore in 2.4.20 and is not needed to run tc and that
> CONFIG_NETLINK_DEV is not needed either.
>
> So what can it be ??
This is a kernel + modules problem.  Not a tc problem.

Stef

-- 

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

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