From: Bob Copeland <me@bobcopeland.com>
To: "Luis R. Rodriguez" <mcgrof@gmail.com>
Cc: "Jouni.Malinen" <Jouni.Malinen@atheros.com>,
Johannes Berg <johannes@sipsolutions.net>,
linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: Flush TX - wireless summit topic
Date: Wed, 23 Sep 2009 07:59:49 -0400 [thread overview]
Message-ID: <20090923115949.GA24051@hash.localnet> (raw)
In-Reply-To: <43e72e890909221541u67fa291fq353327d1d55841f2@mail.gmail.com>
On Tue, Sep 22, 2009 at 03:41:50PM -0700, Luis R. Rodriguez wrote:
> flush prior to channel change? Well one theory discussed was that we
> would see that issue disappear if we actually did a proper TX flush
> prior to channel change since we expect we would not see further
> incoming frames from our AP if we told it we were going to PS (sending
> a null func frame).
Yeah, but due to the way ath5k defers frames, there's still a race
condition (queue some packets, flush TX to send out the nullfunc frame,
then RX tasklet runs on unprocessed packets). I don't think TX flush
would hurt though, then we could probably drop the driver-side code
that tries to do the same.
--
Bob Copeland %% www.bobcopeland.com
next prev parent reply other threads:[~2009-09-23 12:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-22 22:41 Flush TX - wireless summit topic Luis R. Rodriguez
2009-09-23 11:59 ` Bob Copeland [this message]
2009-09-23 22:58 ` Jouni Malinen
2009-09-23 23:28 ` Luis R. Rodriguez
2009-09-24 0:38 ` Luis R. Rodriguez
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