My mail didn't go to the mailing list because of its content. I am posting it again with code attached. It will help some other people having same problem.
On Wed, Apr 22, 2009 at 7:05 AM, Peter Teoh <htmldeveloper@xxxxxxxxx> wrote:
nice work!!!! thank you for the sharing Prashant.
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On Wed, Apr 22, 2009 at 1:34 AM, Prashant Bhole
<prashantsmailcenter@xxxxxxxxx> wrote:
> Hi Thierry,
> I got the solution :) The only thing you are missing is to subscribe the
> group using setsockopt() just after bind() in the user space program. This
> subscription is necessary only when the group id is oher than 1. My code
> sends a message to kernel and then kernel replies to it using
> netlink_broadcast. I am using 2.6.26 kernel. And code is as follows:
>
> /*------------------------------ kernel module
> ----------------------------------*/
> #include <linux/init.h>
> #include <linux/module.h>
> #include <linux/kernel.h>
>
>
> Thanks,
>
> On Fri, Apr 17, 2009 at 2:39 PM, Thierry <chocapiiic.tiery@xxxxxxxxx> wrote:
>>
>> Hi,
>>
>> it is always the same :'(
>> I have looked into kernel sources, and there is also somethings
>> strange: in source code of netlink_kernel_create:
>> if (group <32)
>> group = 32;
>> This lines were not present in kernel 2.6.9.
>> I am also wondering if there isn't somethings wrong with listenners:
>> there are some tests on *has listenners*.
>>
>> Actually, I get theses errors:
>> For kernel code: netlink broadcast return -3, No such process.
>> User code: can't bind: errot -3.
>>
>> I have put one programs, who works when using unicast instead of
>> broadcast, GROUP_IB set to 0, and I fix manually pid of the
>> user-level program.
>> When I changed unicast to broadcast, and I set GROUP_IB to an other
>> value, I get the errors.
>>
>>
>> Thierry
>>
>>
>>
>
>
>
> --
> ~p~r~a~s~h~a~n~t~
>
Regards,
Peter Teoh
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~p~r~a~s~h~a~n~t~
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