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	Thu, 24 Jun 2010 11:53:57 -0400
Subject: Re: rt2x00 & mac80211: correct usage of ieee80211_beacon_get_tim?
From: Johannes Berg <johannes@sipsolutions.net>
To: Helmut Schaa <helmut.schaa@googlemail.com>
Cc: linux-wireless@vger.kernel.org, Ivo van Doorn <ivdoorn@gmail.com>,
	Gertjan van Wingerde <gwingerde@gmail.com>
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Date: Thu, 24 Jun 2010 17:53:57 +0200
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On Thu, 2010-06-24 at 17:51 +0200, Johannes Berg wrote:

>  b) You need to get a new beacon frame from mac80211 only when it
>     changes. You can do this from set_tim(). HOWEVER: since you're not
>     getting a new one from mac80211 all the time anyway, you NEED to
>     have the driver or firmware overwrite the DTIM count, like b43's
>     firmware for example will do.

Oh and "when it changes" doesn't include DTIM period changes, obviously.

johannes