[Click] Feedback from madwifi in Click

[David Fuste]

Hi Peter,
I understand...but unfortunately, I have checked your problem and I get 
the same results as you. No packets are received via output port 1 in 
the FilterTX element, neither in monitor nor in adhoc mode. In fact, I 
never realized of that problem before because I only need feedback from 
received packets and not from transmitted packets. It seems a problem of 
the new madwifi drivers, which do not send back the packets transmitted 
by click.
Please, let me know if you get some solution...

Good luck!
david

Peter De Cleyn wrote:
> Hi David,
> I know I can find it in these headers, actually  all I need for now is to
> know if a packet was successfully transmitted (using the FilterFailures
> etc). I have running Click scripts for this, but I used to use them in
> combination with the older madwifi drivers, so I had to set up a ath0raw
> interface at that time.
>
> Now in the current driver, this functionality should be available through
> the monitor VAP, but I do not receive any packets back from the the system.
> I hope I make myself clear. Normally this is what happens:
> a packet to be transmitted via the wireless interface is encapsulated
> (Prism2Encap/radiotapencap/..) and delivered to the ToDevice element.
> Lateron, the same packet will be received back from the FromDevice element,
> with the Prism2/ratiota.... headers filled with the transmission
> information. It this last packet I miss. I don't receive any feedback
> packets.
>
> If you have a setup running which does gets these feedback packets, could
> you describe me what you did to get it running? I'm using a CVS click, an
> unpatched 2.6.22 kernel, madwifi 0.9.3.1.99-2.
>
> On Wed, Feb 27, 2008 at 10:19 AM, David Fuste <dfuste at ac.upc.edu> wrote:
>
>   
>> Hi Peter,
>> what do you mean exactly for the wifi feedback mechanism?
>> If you mean SSI signal, SSI noise, data rate, etc...you can obtain them
>> in the radiotap, prism or atheros headers, added by madwifi to the top
>> of the packet.
>>
>> david
>>
>> Peter De Cleyn wrote:
>>     
>>> Has anyone recently used the Wifi Feedback mechanism in Click in
>>>       
>> combination
>>     
>>> with the recent MadWifi drivers?
>>>
>>> Following the information from the MadWifi site I am able to contruct a
>>> monitor VAP which allows me to send and receive raw 802.11 frames.
>>>       
>> However I
>>     
>>> don't seem to get any feedback information anymore from the wireless
>>>       
>> driver.
>>     
>>> Any hints on how to (re)activate this behaviour are welcome. In the past
>>>       
>> I
>>     
>>> used the raw device with previous version of the Madwifi driver, but I
>>>       
>> seem
>>     
>>> not succeed in compiling this for the more recent kernels.
>>>
>>> regards
>>>
>>> Peter
>>> _______________________________________________
>>> click mailing list
>>> click at amsterdam.lcs.mit.edu
>>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>>>
>>>       
>> --
>> ========================================================================
>>  0 0 0  David Fusté i Vilella       |    Dept. of Comp. Architecture
>>  0 0 0  Ph.D. Student               |    UPC-Campus Nord, D6-001
>>  0 0 0  email: dfuste at ac.upc.edu    |    C/ Jordi Girona, 1-3
>>  U P C  phone: 0034 93 401 67 83    |    08034 Barcelona - SPAIN
>>                www: http://personals.ac.upc.edu/dfuste/
>> ========================================================================
>>
>>
>>     
> _______________________________________________
> click mailing list
> click at amsterdam.lcs.mit.edu
> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>   

-- 
========================================================================
  0 0 0  David Fusté i Vilella       |    Dept. of Comp. Architecture
  0 0 0  Ph.D. Student               |    UPC-Campus Nord, D6-001
  0 0 0  email: dfuste at ac.upc.edu    |    C/ Jordi Girona, 1-3
  U P C  phone: 0034 93 401 67 83    |    08034 Barcelona - SPAIN
                www: http://personals.ac.upc.edu/dfuste/
========================================================================