[Commotion-dev] Monitor-mode enabled on bcm4330 bcm4329 chips

[Teco Boot]

I don't understand the suggested problems. Media access of bss, ibss and ahdemo do not differ.

The purpose of ahdemo is some form of undercover (no management frames) and less problems with self forming self healing. Requirement is manual config of channel and bssid on all nodes. 
There could be some compatibility between ibss and ahdemo, but that comes with problems where I want to stay away from.

Teco

Op 21 sep. 2012 om 21:58 heeft Hans of Guardian <hans at guardianproject.info> het volgende geschreven:

> 
> Good point.  In terms of "can't work in contention", it should be able to work on some level with contention, no?  If an AHDEMO packet collides with a packet from some other wifi, shouldn't it retry?  For sure, it'll perform poorly, but it should work somewhat unless there is heavy contention.
> 
> .hc
> 
> On Sep 21, 2012, at 2:54 PM, Josh King wrote:
> 
>> ahdemo has some other problems, in that it doesn't play well with 
>> traditional wifi. Given that it lacks beacons and other management 
>> frames, it can't operate in contention with other wifi networks, and 
>> two or more operating on the same channel will cause one to lose out. 
>> That said, it is very handy for some other purposes, not least traffic 
>> obfuscation, since it won't appear to a standard wifi client scanning 
>> for APs.
>> 
>> Although it can't be the default, due to its many shortcomings, ahdemo 
>> support would be a welcome contribution ;-)
>> 
>> On Fri 21 Sep 2012 11:46:07 AM EDT, Hans of Guardian wrote:
>>> 
>>> To use AHDEMO mode, wouldn't every single device on the mesh have to use it?  Could you have some using IBSS and others using AHDEMO at the same time?  AHDEMO sounds great, but such limitations of compatibility limit its usefulness to our goals for MeshTether, which is people easily setting up their own impromptu meshes.  AHDEMO mode sounds great for a backhaul mesh, but the Commotion project uses OpenWRT for that.
>>> 
>>> If you wanted to add AHDEMO support to MeshTether, I think we could incorporate it into the app.
>>> 
>>> .hc
>>> 
>>> On Sep 21, 2012, at 2:18 AM, Teco Boot wrote:
>>>> 
>>>> adhoc mode != AHDEMO.
>>>> I used AHDEMO with madwifi, but I had to switch to IBSS when I switched to ath5k. For a mesh/manet, AHDEMO can have less problems because there are no 802.11 management frames. But it only works when wlan stack does support it, and needs configured BSSID and channel.
>>>> I think AHDEMO drains the battery less fast as WiFi-Direct or IBSS, depending on the MANET protocol and timers. But no power saving mode.
>>>> 
>>>> Teco
>>>> 
>>>> Op 20 sep. 2012, om 17:05 heeft Hans-Christoph Steiner het volgende geschreven:
>>>> 
>>>>> 
>>>>> Its definitely interesting!  It'll be great to have monitor mode on lots
>>>>> of Android devices!  As for adhoc mode, that chipset already works fine,
>>>>> I used the Nexus One as my main development phone for MeshTether.
>>>>> 
>>>>> .hc
>>>>> 
>>>>> On 09/20/2012 09:20 AM, Paul Fuxjaeger wrote:
>>>>>> maybe that's interesting for you folks too:
>>>>>> 
>>>>>> http://bcmon.blogspot.co.il/2012/09/working-monitor-mode-on-nexus-one.html
>>>>>> 
>>>>>> It's not an elegant hack yet (breaks normal operation mode, turns off
>>>>>> all filters, therefore power-consumption increases). But we consider
>>>>>> this an important milestone towards much appreciated flexibility to
>>>>>> experiment: extract cross-layer info, implement adhocdemo mode, ...
>>>>>> 
>>>>>> AFAIK around 80-90% of all smartphones and tablets sold in the last
>>>>>> three years use this one.
>>>>>> 
>>>>>> 
>>>>>> cheers
>>>>>> paul
>>>>>> 
>>>>>> _______________________________________________
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>>>>>> Commotion-dev at lists.chambana.net
>>>>>> http://lists.chambana.net/mailman/listinfo/commotion-dev
>>>>>> 
>>>>> 
>>>>> _______________________________________________
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>>>>> 
>>>> 
>>> 
>>> 
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>> 
>> --
>> Josh King
>> 
>> "I am an Anarchist not because I believe Anarchism is the final goal,
>> but because there is no such thing as a final goal." -Rudolf Rocker
>> 
>