Wrong BSSID generation in IBSS mode with ath5k

Wrong BSSID generation in IBSS mode with ath5k

[Karol Pucyński]

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Hi

I have IBSS network (based on ath5k cards).
With the same channel/essid set cards often can't "negotiate" the 
same BSSID. Two nodes beside each other both create new IBSS networks
and they are not trying to merge.
Workaround: forcing BSSID with iw does work.

Do you know what can be the reason of this problem?

Tested on 2.6.31 kernel. May be related to my earlier problem 'ath5k
IBSS fixed rate'...

Best regards
-- 
Karol Pucyński
7bulls.com Sp. z o.o.
kpucynski@7bulls.com

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Re: Wrong BSSID generation in IBSS mode with ath5k

[reinette chatre]

On Tue, 2009-10-20 at 08:27 -0700, Karol Pucyński wrote:
> I have IBSS network (based on ath5k cards).
> With the same channel/essid set cards often can't "negotiate" the 
> same BSSID. Two nodes beside each other both create new IBSS networks
> and they are not trying to merge.
> Workaround: forcing BSSID with iw does work.
> 
> Do you know what can be the reason of this problem?
> 
> Tested on 2.6.31 kernel. May be related to my earlier problem 'ath5k
> IBSS fixed rate'...

Are you using compat-wireless? If not, then ignore this email.

If you are using the latest wireless bits using compat-wireless then you
may have run into this issue
http://thread.gmane.org/gmane.linux.kernel.wireless.general/41129

Reinette

Re: Wrong BSSID generation in IBSS mode with ath5k

[Nick Kossifidis]

2009/10/20 Karol Pucyński <kpucynski@7bulls.com>:
> Hi
>
> I have IBSS network (based on ath5k cards).
> With the same channel/essid set cards often can't "negotiate" the
> same BSSID. Two nodes beside each other both create new IBSS networks
> and they are not trying to merge.
> Workaround: forcing BSSID with iw does work.
>
> Do you know what can be the reason of this problem?
>
> Tested on 2.6.31 kernel. May be related to my earlier problem 'ath5k
> IBSS fixed rate'...
>
> Best regards
> --
> Karol Pucyński
> 7bulls.com Sp. z o.o.
> kpucynski@7bulls.com
>

In my tests i had to force a scan on one of the cards (so that it
knows what cells are active) and then set the essid. Does that work
for you ?

-- 
GPG ID: 0xD21DB2DB
As you read this post global entropy rises. Have Fun ;-)
Nick

Re: Wrong BSSID generation in IBSS mode with ath5k

[X Xiao]

there was  a patch fixed that, it's on the list a few days back.

--- On Sat, 10/24/09, Nick Kossifidis <mickflemm@gmail.com> wrote:

> From: Nick Kossifidis <mickflemm@gmail.com>
> Subject: Re: Wrong BSSID generation in IBSS mode with ath5k
> To: "Karol Pucyński" <kpucynski@7bulls.com>
> Cc: linux-wireless@vger.kernel.org
> Date: Saturday, October 24, 2009, 6:27 PM
> 2009/10/20 Karol Pucyński <kpucynski@7bulls.com>:
> > Hi
> >
> > I have IBSS network (based on ath5k cards).
> > With the same channel/essid set cards often can't
> "negotiate" the
> > same BSSID. Two nodes beside each other both create
> new IBSS networks
> > and they are not trying to merge.
> > Workaround: forcing BSSID with iw does work.
> >
> > Do you know what can be the reason of this problem?
> >
> > Tested on 2.6.31 kernel. May be related to my earlier
> problem 'ath5k
> > IBSS fixed rate'...
> >
> > Best regards
> > --
> > Karol Pucyński
> > 7bulls.com Sp. z o.o.
> > kpucynski@7bulls.com
> >
> 
> In my tests i had to force a scan on one of the cards (so
> that it
> knows what cells are active) and then set the essid. Does
> that work
> for you ?
> 
> -- 
> GPG ID: 0xD21DB2DB
> As you read this post global entropy rises. Have Fun ;-)
> Nick
> --
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