Subject: Re: [PATCH v3] mac80211: Give it some time to do the TSF sync
From: Johannes Berg <johannes@sipsolutions.net>
To: Alina Friedrichsen <x-alina@gmx.net>
Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org
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References: <20090221231800.227280@gmx.net>
	 (sfid-20090222_001831_559891_2537405E) <1235439633.4455.33.camel@johannes.local>
	 <20090225004955.227080@gmx.net> (sfid-20090225_015029_602384_627C04D3)
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Date: Tue, 24 Feb 2009 17:45:34 -0800
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On Wed, 2009-02-25 at 01:49 +0100, Alina Friedrichsen wrote:
> Hello Johannes!
>=20
> > Please elaborate on what this does. This uses the assumption that
> > reset_tsf() makes it start at 0, and that then the hardware won't sync
> > up until N seconds etc.
>=20
> The ath5k and ath9k drivers do so. If a driver/hardware don't, it
> causes other problems. For example ("iwconfig wlan0 essid new_ibss")
> if the sync isn't done before the first beacon is send and the TSF of
> the old IBSS-Network was higher the the TSF of the new one, so the all
> nodes of the new network now sync to the higher TSF of the old
> network.

Right. I just want to see an explanation in the code.

johannes

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