> On Mon, 10 Apr 2006 21:41:39 -0400 (EDT) "George P Nychis"
> <gnychis@xxxxxxx> wrote:
>
>> Hi,
>>
>> I am trying to install a proprietary qdisc made for research, it is not
>> publically released yet, however its been used several times so i know
>> it works.
>>
>> The files included are: q_xcp.c: static int xcp_parse_opt() static int
>> xcp_print_opt() static int xcp_print_xstats() struct qdisc_util xcp_util
>> = { "NULL", "xcp" ..... };
>>
>> sch_xcp.c: static int xcp_enqueue() static int xcp_requeue() static struct
>> sk_buff * xcp_dequeue() .... .... struct Qdisc_ops xcp_qdisc_ops ={
>> NULL,NULL,"xcp",.... };
>>
>> printk(KERN_INFO "XCP qdisc module loaded.\n"); return
>> register_qdisc(&xcp_qdisc_ops);
>>
>>
>> So, i make everything successfully, it creates q_xcp.so and copies it
>> to /usr/lib and sch_xcp.o which it copies to /lib/modules/... so then I
>> "insmod sch_xcp" and i see in dmesg: "XCP qdisc module loaded."
>>
>> I then try: "tc qdisc add dev eth0 root xcp capacity 10Mbit limit 500"
>> and get: "Unknown qdisc "xcp", hence option "capacity" is unparsable"
>>
>> So then I read the INSTALL further to find some sort of solution and it
>> mentions: This again assumes "tc" version is 2.4.7. If your "tc" is a
>> different version, download the iproute2 source code, and edit Makefile
>> to point "TC_INCLUDE" to "-I..../iproute2/include -I..../iproute2/tc"
>>
>> So, i did that, and i recompiled the q_xcp.so: lanthanum-ini src-1.0.1 #
>> make q_xcp.so cc -O2 -fPIC
>> -I/var/tmp/portage/iproute2-2.6.11.20050310-r1/work/iproute2-2.6.11/inc
>> lude/
>> -I/var/tmp/portage/iproute2-2.6.11.20050310-r1/work/iproute2-2.6.11/tc_
>> include -o q_xcp.o -c q_xcp.c ld -shared -o q_xcp.so q_xcp.o rm -f
>> q_xcp.o
>>
>> But i still get the same error.... so then my very final last effort
>> was to move q_xcp.c to my iproute2 source code tc/ directory and added
>> this to the makefile: TCMODULES += q_xcp.o
>>
>> Then I compiled tc, and i check tc to see if the xcp qdisc functions
>> were loaded: lanthanum-ini tc # nm tc | grep xcp 080531ec t xcp_parse_opt
>> 080533e0 t xcp_print_opt 08053426 t xcp_print_xstats 08070cc0 D xcp_util
>>
>>
>> And finally: lanthanum-ini tc # ./tc qdisc add dev ath0 root xcp
>> capacity 54Mbit limit 500 Unknown qdisc "xcp", hence option "capacity"
>> is unparsable
>>
>>
>> I have no clue :( I figured that putting the .so into /usr/lib would
>> have been enough. Sorry for the long e-mail, I hope someone can help,
>> and thank you for your time even if you don't know the solution but
>> read this :)
>>
>> - George
>>
>
> The .so needs to go in /usr/lib/tc (assuming you are running relatively
> recent version of iproute2 tools).
>
> Read source to tc.c where it calls dlopen.
>
>
Still didn't seem to solve the problem :\
In my tc.c i have:
snprintf(buf, sizeof(buf), "/usr/lib/tc/q_%s.so", str);
Also:
lanthanum-ini tc # ls /usr/lib/tc
experimental.dist normal.dist pareto.dist paretonormal.dist q_netem.so q_xcp.so
And finally:
lanthanum-ini tc # tc qdisc add dev ath0 root xcp capacity 54Mbit limit 500
Unknown qdisc "xcp", hence option "capacity" is unparsable
Maybe i should add debugging in tc.c and see if it sees the .so and fails to load it or something.
Any other suggestions?
Thanks for all the responses,
George
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