[Click] please_stop_driver() function

[Nikitas Liogkas]

That's weird, I've successfully used please_stop_driver() in Discard, 
to stop the driver when a packet with a specific annotation comes 
along! I modified the default Discard element though, I did not create 
a new one! Maybe something is wrong with your newly-created element?

nikitas


Andreas Tarp wrote:
> 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
>>>
>>> _______________________________________________
>>> click mailing list
>>> click at amsterdam.lcs.mit.edu
>>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>>
>>
>>
>>
> 
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