From: Helmut Schaa <hschaa@suse.de>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Subject: Re: [RFC] Implement basic background scanning
Date: Mon, 15 Sep 2008 18:35:03 +0200 [thread overview]
Message-ID: <200809151835.03786.hschaa@suse.de> (raw)
In-Reply-To: <1221494383.3700.52.camel@johannes.berg>
Am Montag, 15. September 2008 schrieb Johannes Berg:
> On Mon, 2008-09-15 at 14:29 +0200, Helmut Schaa wrote:
> > Basic implementation of software background scanning functionality.
> >
> > The patch basically enhances the scanning state machine by two further
> > states (SCAN_DEFER, SCAN_OPERATION). In state SCAN_DEFER the driver is advised
> > to switch back to the operating channel while SCAN_OPERATION tells the access
> > point about being back from power saving and restarts the tx queue. Just before
> > SCAN_SET_CHANNEL sets the next channel to scan it notifies the access point
> > about going to power save state and stops the tx queue.
> >
> > However one (still unresolved) issue is that the code does not wait for the
> > appropriate ACK from the access point after notifying the new power state.
> >
> > Any thoughts or comments?
>
> This doesn't play well at all with hardware assisted scan as far as I
> can tell.
Correct. The patch only adapts software scan code. The hardware assisted scan
is not touched at all but should also not be affected in an odd way.
Helmut
next prev parent reply other threads:[~2008-09-15 16:35 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-15 12:16 More thoughts about roaming Helmut Schaa
2008-09-15 12:29 ` [RFC] Implement basic background scanning Helmut Schaa
2008-09-15 14:32 ` Michael Buesch
2008-09-15 14:40 ` Helmut Schaa
2008-09-15 15:59 ` Johannes Berg
2008-09-15 16:35 ` Helmut Schaa [this message]
2008-09-16 8:43 ` Kalle Valo
2008-09-16 9:10 ` Johannes Berg
2008-09-16 9:20 ` Helmut Schaa
2008-09-16 11:06 ` Johannes Berg
2008-09-16 9:15 ` Tomas Winkler
2008-09-15 12:35 ` [RFC] mac80211: notify the user space about low signal quality Helmut Schaa
2008-09-15 14:07 ` Dan Williams
2008-09-15 14:34 ` Helmut Schaa
2008-09-15 15:28 ` Dan Williams
2008-09-15 16:45 ` Helmut Schaa
2008-09-16 1:21 ` Luis R. Rodriguez
2008-09-16 7:41 ` Helmut Schaa
2008-09-16 8:07 ` Kalle Valo
2008-09-16 8:12 ` Johannes Berg
2008-09-16 8:55 ` Kalle Valo
2008-09-23 18:21 ` John W. Linville
2008-09-16 8:00 ` Kalle Valo
2008-09-16 7:57 ` Kalle Valo
2008-09-15 15:10 ` Holger Schurig
2008-09-15 15:19 ` Dan Williams
2008-09-16 8:25 ` Kalle Valo
2008-09-16 8:50 ` Holger Schurig
2008-09-16 9:25 ` Helmut Schaa
2008-09-16 9:32 ` Helmut Schaa
2008-09-16 10:23 ` Holger Schurig
2008-09-15 15:17 ` Holger Schurig
2008-09-16 7:53 ` Kalle Valo
2008-09-15 12:41 ` [RFC] wpa_supplicant: trigger a scan if signal quality is low Helmut Schaa
2008-09-15 13:59 ` More thoughts about roaming Dan Williams
2008-09-15 14:18 ` Helmut Schaa
2008-09-15 14:45 ` Dan Williams
2008-09-16 7:09 ` Kalle Valo
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