From: Ben Greear Date: Tue, 21 Sep 2010 05:08:02 -0700 Subject: [ath9k-devel] ath9k, multiple stations, and AMPDUs In-Reply-To: <4C98848C.70005@openwrt.org> References: <4C9841BA.4080700@candelatech.com> <4C98848C.70005@openwrt.org> Message-ID: <4C98A022.7020106@candelatech.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.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 Candela Technologies Inc http://www.candelatech.com