IBSS-RSN support for BCM4313

IBSS-RSN support for BCM4313

[Jordan McCarthy]

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Hi Linux wireless folk,
	I am a developer at a non-profit working on a wireless mesh networking
platform, and we've just discovered that we have a fleet of netbooks
with the Broadcom 4313 chipset, one that does not work particularly well
(and sometimes not at all) in ad-hoc mode.

What's more, none of the available drivers seem to support IBSS-RSN,
which is absolutely essential for the requirements of our platform.
Accordingly, I wondered if anyone has any experience trying to get the
BCM4313 to work in an IBSS-RSN configuration, and if not, what is needed
to get either of the following:

- - brcmsmac to support adhoc mode
- - b43 to cover the BCM4313

Many thanks,
Jordan

- -- 
Jordan McCarthy
Technical Program Associate | Open Technology Institute | New America
Foundation
My Public Key: 0xC08D8042 | 4A61 3D39 4125 127D 65EA DDC2 BFBD A2E9 C08D
8042
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Re: IBSS-RSN support for BCM4313

[Hauke Mehrtens]

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On 07/24/2013 02:32 PM, Jordan McCarthy wrote:
> Hi Linux wireless folk, I am a developer at a non-profit working on
> a wireless mesh networking platform, and we've just discovered that
> we have a fleet of netbooks with the Broadcom 4313 chipset, one
> that does not work particularly well (and sometimes not at all) in
> ad-hoc mode.
> 
> What's more, none of the available drivers seem to support
> IBSS-RSN, which is absolutely essential for the requirements of our
> platform. Accordingly, I wondered if anyone has any experience
> trying to get the BCM4313 to work in an IBSS-RSN configuration, and
> if not, what is needed to get either of the following:
> 
> - brcmsmac to support adhoc mode - b43 to cover the BCM4313

Hi Jordan,

I added basic adhoc mode support to brcmsmac in 3.10 [0].
This did not got much testing by me. If you want to improve this have
a look on how b43 handles adhoc mode and looking into the initial
brcmsmac commit to staging also helps.

Hauke

[0]:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c55b3766054d3db7a9732c6c8a1c81afac2cfaa6
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Re: IBSS-RSN support for BCM4313

[Arend van Spriel]

On 07/24/2013 02:32 PM, Jordan McCarthy wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi Linux wireless folk,
> 	I am a developer at a non-profit working on a wireless mesh networking
> platform, and we've just discovered that we have a fleet of netbooks
> with the Broadcom 4313 chipset, one that does not work particularly well
> (and sometimes not at all) in ad-hoc mode.

For certain variants of that chipset the brcmsmac driver does not 
perform well regardless the mode it is in. So could you provide some 
more details on the bcm4313 chipset. Can you provide contents from 
/sys/kernel/debug/brcmsmac/bcma*/hardware (if that is the correct path).

Regards,
Arend