Re: [PATCH] libertas: cfg80211 support

[Holger Schurig <holgerschurig@gmail.com>]

> What I changed is triggerring the scan work whenever the last
> one is done, i.e. triggering it from lbs_ret_scan().

Ah, that makes sense.

> My initial thought was that you could have 2 lbs_cfg_scan()
> running at the same time since you could potentially have a 2nd
> lbs_cfg_scan() call before scan_request is actually set.

Hmm, even when cfg80211 would allow this, I wouldn't allow this 
in the driver. All the hoops with the delayed-scan-work is 
because the firmware can't send a I'm-on-powersafe-notification 
to the current AP while being on other channels. So I have to 
make sure to return from time to time to my AP, so that I won't 
loose packets for me and won't be disconnected.

If now two scan_req and therefore two scan workers run, the time 
we're away from our "home channel" increases, which also 
increase the deauthentication problem.


Oh, and btw: we can later add an optimization that if we aren't 
connected at all, we do all scans in one-go, without delays. We 
still need to send several scan-commands to the firmware, to 
reduce the possible that a huuuuuge scan response overflows some 
firmware buffer limit.


Thanks for your answers.

Best regards,
Holger

-- 
http://www.holgerschurig.de