Subject: Re: Hidden SSID and WLAN powersave
From: Johannes Berg <johannes@sipsolutions.net>
To: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Cc: linux-wireless@vger.kernel.org
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Date: Tue, 04 Jan 2011 12:05:59 +0100
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On Tue, 2011-01-04 at 13:00 +0200, Juuso Oikarinen wrote:

> > > As result, the STA does not ever enter WLAN PSM.
> > > 
> > > Anyone stumbled on this issue?
> > 
> > I haven't come across it, but we don't test hidden SSIDs much ...
> > sounds perfectly logical.
> 
> I would fix this, but I'm afraid I don't know enough about the mac80211
> to make a valid decision on how to go about that.
> 
> For PSM, this is an issue about the TIM IE, or more specifically the
> DTIM period. AFAIK, all the bss entries with the same BSSID should share
> the same DTIM period - I think this is valid for other cases with
> multiple SSIDs on one BSSID too.
> 
> 
> Any suggestions on how to approach this issue?

I'd probably see if you can update all the matching BSS structs with the
received beacon IEs.

johannes