[PATCH] AP: Allow using existing interfaces as a fallback

Rafał Miłecki zajec5 at gmail.com
Wed Jun 1 00:37:48 PDT 2016

On 1 June 2016 at 09:08, Johannes Berg <johannes at sipsolutions.net> wrote:
> On Wed, 2016-06-01 at 08:33 +0200, Rafał Miłecki wrote:
>> Some drivers (e.g. brcmfmac) may not support deleting virtual
>> interfaces. In such cases we can start AP interfaces once only. On
>> next tries be should try to use existing interfaces as a fallback.
> Why don't we just consider that a driver bug if you can create, but not
> remove, interfaces?

Ideally we should have just brcmfmac fixed. Unfortunately I have
doubts if we can hope for that. Broadcom added support for multiple
BSSes in late 2014 and since then it was in a kind of poor state
(buggy). It easily goes into some inconsistent & unreliable state. I
think Broadcom even released BCM43602 firmware with some special
modifications to make it work with brcmfmac.

I'll see again if there is anything I can do about that, I'll get back
to you in few days.


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