[Click] please_stop_driver() function

[Andreas Tarp]

Hi Eddie,

thanks for the answer.

I just tested the please_stop_driver() function without using other own 
elements but the Segmentation fault is still there :-(

I changed the original Discard element to stop the driver if a packet is 
passed to the element. Here is the customized part of the Discard element:

void
Exit::push(int, Packet *p)
{
   p->kill();
   router()->please_stop_driver();
}

(Discard is replaced by Exit, the elements name
#include <click/router.hh> is also included)

My click configuration is very simple:

FromDevice(wlan0)
-> Exit;

Using the original Discard element instead of Exit works fine.

Elements like TimedSource (they also use the please_stop_driver() 
function) are also working without problems.

I am using Click 1.4.1 cross compiled on some iPAQs (ARM CPU) running 
familiar Linux.

Andreas




Eddie Kohler wrote:

> Hi Andreas,
>
> Click should not segfault after please_stop_driver().  Is your 
> configuration running an element of your own design?  Maybe the bug is 
> there.  EIther that or it's our bug, send a configuration along and 
> sometime hopefully before 2006 :( we'll take a look.
>
> Eddie
>
>
> Andreas Tarp wrote:
>
>> Hi,
>>
>> i have a question regarding to the please_stop_driver()  function 
>> from click/router.hh:
>>
>> I think in theory the line
>>
>> router -> please_stop_driver()
>>
>> somewhere within an element (for example in the 
>> Element::simple_action part) should stop the runnig click 
>> configuration and return to the linux console.
>>
>> In my case click quits when calling these function, but I always 
>> receive a SIGSEGV error. Do I have to pay attention to some other 
>> rules, when calling please_stop_driver() ?
>>
>> My intention is to write a small element, which quits the running 
>> click router, if a packet is passed to the element.
>>
>> Thanks a lot,
>>
>> Andreas
>>
>> _______________________________________________
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>> click at amsterdam.lcs.mit.edu
>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>
>
>