From: Ben Greear <greearb@candelatech.com>
To: Felix Fietkau <nbd@openwrt.org>
Cc: "ath9k-devel@lists.ath9k.org" <ath9k-devel@venema.h4ckr.net>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: [ath9k-devel] ath9k, multiple stations, and AMPDUs
Date: Tue, 21 Sep 2010 05:08:02 -0700 [thread overview]
Message-ID: <4C98A022.7020106@candelatech.com> (raw)
In-Reply-To: <4C98848C.70005@openwrt.org>
On 09/21/2010 03:10 AM, Felix Fietkau wrote:
> On 2010-09-21 7:25 AM, Ben Greear wrote:
>> I think I have narrowed down some problems I see when I create
>> two STA interfaces on the same radio and associate with the
>> same AP.
>>
>> I'm using wireless-testing plus some patches to the rx logic
>> I posted earlier.
>>
>> It appears that the ath9k NIC does not transport AMPDUs properly,
>> and after a few seconds, it's backlog is exhausted and the queues
>> are stopped in ath_tx_start.
> ath9k currently looks up the sta by hw and not by vif on tx completion.
> That completely breaks aggregation in such a setup. Unfortunately I
> don't know an easy way to fix this yet.
>
> This will be fixed by my sw aggregation rewrite, but I don't know when
> I'll get that completed yet.
If you have any more details on this, please let me know. I'm going to
attempt to fix it...I certainly have a good test case :)
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2010-09-21 12:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-21 5:25 ath9k, multiple stations, and AMPDUs Ben Greear
2010-09-21 10:10 ` [ath9k-devel] " Felix Fietkau
2010-09-21 12:08 ` Ben Greear [this message]
2010-09-21 12:19 ` Felix Fietkau
2010-09-21 12:24 ` Johannes Berg
2010-09-21 12:31 ` Johannes Berg
2010-09-21 17:25 ` Ben Greear
2010-09-21 18:00 ` Felix Fietkau
2010-09-21 18:04 ` Ben Greear
2010-09-21 18:06 ` Felix Fietkau
2010-09-21 19:28 ` Johannes Berg
2010-09-21 19:32 ` Felix Fietkau
2010-09-21 20:19 ` Ben Greear
2010-09-21 22:41 ` Felix Fietkau
2010-09-22 4:33 ` Ben Greear
2010-09-22 8:31 ` Felix Fietkau
2010-09-23 4:58 ` Ben Greear
2010-09-23 8:33 ` Johannes Berg
2010-09-23 13:56 ` Ben Greear
2010-09-23 14:05 ` Johannes Berg
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