From: Bob Copeland <me@bobcopeland.com>
To: Joerg Pommnitz <pommnitz@yahoo.com>
Cc: linux-wireless@vger.kernel.org, ath5k-devel@lists.ath5k.org
Subject: Re: ath5k with two NICs runing IBSS and AP mode simultaneously causes error
Date: Thu, 22 Oct 2009 09:08:32 -0400 [thread overview]
Message-ID: <b6c5339f0910220608u2183d40cldec6ea427efc60d1@mail.gmail.com> (raw)
In-Reply-To: <868263.12588.qm@web51404.mail.re2.yahoo.com>
On Wed, Oct 21, 2009 at 7:01 AM, Joerg Pommnitz <pommnitz@yahoo.com> wrote:
> ath5k phy0: no further txbuf available, dropping packet.
> The timing makes it very likely that the hostapd on wlan1 disturbed the iperf run on wlan0. Is this a known problem? Is there something I can do to help track this down?
It is a known problem - please do try to track it down.
I think a good place to start is looking at the creation
of tx descriptors, particularly for the beacon and CAB
queues, and make sure they are properly released. Maybe
printing out a high-water mark of the created vs available
descriptors when transmitting packets would be a useful
data point.
BTW the reason all traffic stops is that we stop the queues
but don't re-enable them in that case -- we should probably
set a timer or something to recover from that situation.
--
Bob Copeland %% www.bobcopeland.com
next prev parent reply other threads:[~2009-10-22 13:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-21 11:01 ath5k with two NICs runing IBSS and AP mode simultaneously causes error Joerg Pommnitz
2009-10-22 13:08 ` Bob Copeland [this message]
2009-10-22 13:17 ` Joerg Pommnitz
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