Hi,all.
Is there anyone who has interest in raspberry pi or SDN? Recently I want to build OpenvSwitch on raspberry pi(OS:RASPBIAN Debian Wheezy). There is a website that can be referred to(https://plus.google.com/+YoheiKuga/posts/8fqciZydvx5).
However, when I carried on the last two steps,such as " sudo insmod datapath/linux/openvswitch.ko", I got such errors:
"Error: could not insert module datapath/linux/openvswitch.ko: Invalid module format"
Then I use "dmesg | tail" to see the log:

[ 23.818755] Adding 102396k swap on /var/swap. Priority:-1 extents:1 across:102396k SSFS
[14606.287137] openvswitch: disagrees about version of symbol module_layout
[17049.097625] openvswitch: disagrees about version of symbol module_layout
[17509.218103] openvswitch: disagrees about version of symbol module_layout

It seems that there maybe something disagreement between the version of raspberry pi(maybe Linux kernel) and the version of OpenvSwitch.

My software environment is as followed.
raspberry pi:
RASPBIAN
Debian Wheezy
Version:January 2014
Release date:2014-01-07
URL:raspbian.org
Kernel version:3.10
Release notes:Link
OpenvSwitch:
openvswitch-1.9.3.tar.gz(http://openvswitch.org/download/)

Hope for some instruction.
Thanks in advance.

Hi,

Just a wild guess, but the Module.symvers file might not be quite in sync with your kernel? Latest module.symvers is for kernel 3.10.34 - see https://github.com/raspberrypi/firmw...e/master/extra. Based on the release date of your OS, I'm guessing you're running closer to 3.10.24?

If this is the problem, you probably need to either recompile your kernel to the same version (from the source you downloaded), or find the correct version of Module.symvers.

I hope this helps :-)

Clifford

Thanks for your advice. I'm compiling the kernel on the raspbian, in order to let it generates the Module.symvers. However, the progress is quite slow because of the CPU in raspberry pi.