From: Jouni Malinen <j@w1.fi>
To: bruno randolf <bruno@thinktube.com>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>,
linux-wireless@vger.kernel.org,
cao jing <caojing.china@gmail.com>
Subject: Re: AR5K_INT_SWBA can't generate interruption for sending beacons
Date: Wed, 16 Apr 2008 09:01:09 +0300 [thread overview]
Message-ID: <20080416060109.GG15053@jm.kir.nu> (raw)
In-Reply-To: <200804151059.06119.bruno@thinktube.com>
On Tue, Apr 15, 2008 at 10:59:05AM +0200, bruno randolf wrote:
> the current code in wireless-testing uses SWBA not to send beacons but to keep
> track of the next beacon time NBTT. this is necessary to work around certain
> hardware limitations. once configured, the beacons are sent automatically by
> the hardware at the right time. of course it would be possible to change the
> code to generate a new beacon at every SWBA but as long as the beacon
> contents don't change very often i don't see the point of doing so.
In AP mode, beacon payload changes for _every beacon_ unless you use
DTIM Period of 1. In order to make power saving work correctly, the
drivers need to update the beacon data for every beacon.
--
Jouni Malinen PGP id EFC895FA
next prev parent reply other threads:[~2008-04-16 6:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-15 4:24 AR5K_INT_SWBA can't generate interruption for sending beacons cao jing
2008-04-15 8:36 ` Holger Schurig
2008-04-15 8:51 ` Holger Schurig
2008-04-15 8:59 ` bruno randolf
2008-04-16 6:01 ` Jouni Malinen [this message]
2008-04-16 8:43 ` bruno randolf
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