[ath9k-devel] ad-hoc mode

[ath9k-devel] ad-hoc mode

[LIGEO_GEORGE at denso-diam.com]

Hi fellas, 

I'm trying to get ad-hoc mode working with ath9k driver on AR9220 
chipsets. 

Question is - Can I just use iwconfig to set mode to ad-hoc, set essid and 
set frequency and then hope to get ad-hoc connectivity between two AR9220 
chips using the ath9k driver? Or do I need to configure something else 
too? hostapd maybe? 

When I try the above, I can get the individual cards to go to ad-hoc mode, 
but they don't see each other - not sure whats going on here..


I'm using the latest Ubuntu release 10.04 with the 2.6.32 kernel and the 
default ath9k driver that came with the release. 


Although I did see references about work going on with 11n support in 
ad-hoc mode in the mailing list, I'm not sure about the current state of 
development. Can I download the latest ath9k driver and get ad-hoc working 
with 11n support or will the driver that came with Ubuntu 10.04 release 
have support for 11n with ad-hoc? 


Appreciate any pointers. 

Thank you

- Lig
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[ath9k-devel] ad-hoc mode

[LIGEO_GEORGE at denso-diam.com]

After going through older posts - I found this one 
https://lists.ath9k.org/pipermail/ath9k-devel/2009-December/002808.html

I use the config script in that post and can get the ad-hoc mode to work - 
the main reason why I think it didn't work earlier for me was that I 
didn't specify the fixed BSSID/cell number at both ends. 

But, I observe the exact same behavior as reported by the post - if I 
change the frequency to 2412, pings stop working in ad-hoc mode. Even if I 
re-insert the ath9k, it seem like the new frequency I set (2412) doesn't 
work. If I go back to the 5200 frequency after re-inserting ath9k module, 
pings start working again. Again, like the post stated, when I set 2412 
using iw, I still see the old 5200 frequency in iwconfig. 

hm... 


ath9k-devel-bounces at lists.ath9k.org wrote on 05/04/2010 06:34:36 PM:

> 
> Hi fellas, 
> 
> I'm trying to get ad-hoc mode working with ath9k driver on AR9220 
chipsets. 
> 
> Question is - Can I just use iwconfig to set mode to ad-hoc, set 
> essid and set frequency and then hope to get ad-hoc connectivity 
> between two AR9220 chips using the ath9k driver? Or do I need to 
> configure something else too? hostapd maybe? 
> 
> When I try the above, I can get the individual cards to go to ad-hoc
> mode, but they don't see each other - not sure whats going on here.. 
> 
> 
> I'm using the latest Ubuntu release 10.04 with the 2.6.32 kernel and
> the default ath9k driver that came with the release. 
> 
> 
> Although I did see references about work going on with 11n support 
> in ad-hoc mode in the mailing list, I'm not sure about the current 
> state of development. Can I download the latest ath9k driver and get
> ad-hoc working with 11n support or will the driver that came with 
> Ubuntu 10.04 release have support for 11n with ad-hoc? 
> 
> 
> Appreciate any pointers. 
> 
> Thank you 
> 
> - Lig_______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
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[ath9k-devel] ad-hoc mode

[Benoit Papillault]

Le 05/05/2010 20:07, LIGEO_GEORGE at denso-diam.com a ?crit :
>
> After going through older posts - I found this one
> https://lists.ath9k.org/pipermail/ath9k-devel/2009-December/002808.html
>
> I use the config script in that post and can get the ad-hoc mode to work
> - the main reason why I think it didn't work earlier for me was that I
> didn't specify the fixed BSSID/cell number at both ends.
>
> But, I observe the exact same behavior as reported by the post - if I
> change the frequency to 2412, pings stop working in ad-hoc mode. Even if
> I re-insert the ath9k, it seem like the new frequency I set (2412)
> doesn't work. If I go back to the 5200 frequency after re-inserting
> ath9k module, pings start working again. Again, like the post stated,
> when I set 2412 using iw, I still see the old 5200 frequency in iwconfig.
>
> hm...

You don't need to use a fixed frequency, nor fixed BSSID. Just use :

iw dev wlan0 ibss join YourSSIID YourFrequency

YourFrequency is only used if scanning did not find a neighbor node.

Regards,
Benoit

[ath9k-devel] ad-hoc mode

[LIGEO_GEORGE at denso-diam.com]

Ok. Thanks. I will try that. 

Reading an earlier post, 
https://lists.ath9k.org/pipermail/ath9k-devel/2009-November/002670.html , 
I thought there was a problem with IBSS mode, but maybe its fixed now or I 
probably have an older driver.. 

To reiterate an earlier question, does the current driver in git support 
11N in ad-hoc mode? I haven't been able to figure out the current status 
of 11N + IBSS development from the mailing list. Please let me know. 
Thanks!


- Lig

ath9k-devel-bounces at lists.ath9k.org wrote on 05/05/2010 02:02:28 PM:

> Le 05/05/2010 20:07, LIGEO_GEORGE at denso-diam.com a ?crit :
> >
> > After going through older posts - I found this one
> > 
https://lists.ath9k.org/pipermail/ath9k-devel/2009-December/002808.html
> >
> > I use the config script in that post and can get the ad-hoc mode to 
work
> > - the main reason why I think it didn't work earlier for me was that I
> > didn't specify the fixed BSSID/cell number at both ends.
> >
> > But, I observe the exact same behavior as reported by the post - if I
> > change the frequency to 2412, pings stop working in ad-hoc mode. Even 
if
> > I re-insert the ath9k, it seem like the new frequency I set (2412)
> > doesn't work. If I go back to the 5200 frequency after re-inserting
> > ath9k module, pings start working again. Again, like the post stated,
> > when I set 2412 using iw, I still see the old 5200 frequency in 
iwconfig.
> >
> > hm...
> 
> You don't need to use a fixed frequency, nor fixed BSSID. Just use :
> 
> iw dev wlan0 ibss join YourSSIID YourFrequency
> 
> YourFrequency is only used if scanning did not find a neighbor node.
> 
> Regards,
> Benoit
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
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[ath9k-devel] ad-hoc mode

[Benoit Papillault]

Le 05/05/2010 23:24, LIGEO_GEORGE at denso-diam.com a ?crit :
>
> Ok. Thanks. I will try that.
>
> Reading an earlier post,
> https://lists.ath9k.org/pipermail/ath9k-devel/2009-November/002670.html
> , I thought there was a problem with IBSS mode, but maybe its fixed now
> or I probably have an older driver..
> <https://lists.ath9k.org/pipermail/ath9k-devel/2009-November/002670.html>
>
> To reiterate an earlier question, does the current driver in git support
> 11N in ad-hoc mode? I haven't been able to figure out the current status
> of 11N + IBSS development from the mailing list. Please let me know.
> Thanks!
>
>
> - Lig

HT IBSS (ie 802.11n + IBSS) is currently work in progress. I just posted 
patches on linux-wireless list.

Regards,
Benoit

[ath9k-devel] ad-hoc mode

[mahaveer gupta]

Hello,

I am trying to do some experiments with a few devices in the ad-hoc mode.

However, I observe that after a while, the connectivity drops abruptly and
the only way to restore it seems to be reloading the driver.

The node on which the connectivity has dropped sends out ARP requests when
I try to ping another node. The other node promptly responds with ARP
reply. However, the first node doesn't seem to be getting it.

A look into the dmesg logs shows that the first node has destroyed all the
stations with


wlan2: Destroyed STA xx:xx:xx:xx:xx:xx
and
wlan2: Removed STA xX:xx:xx:xx:xx:xx

messages in the log.

However, the disconnected node has appropriate cell-d and ip addresses, not
quite sure what is going wrong

Could someone please point out what could be potentially happening.

-- 
Thanks,
M
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