Return-path: Received: from an-out-0708.google.com ([209.85.132.245]:46756 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751758AbYBCPzW (ORCPT ); Sun, 3 Feb 2008 10:55:22 -0500 Received: by an-out-0708.google.com with SMTP id d31so439385and.103 for ; Sun, 03 Feb 2008 07:55:21 -0800 (PST) To: "Guy Cohen" Subject: Re: mac80211 QoS/aggregation questions, thoughts Date: Sun, 3 Feb 2008 16:54:54 +0100 Cc: "Tomas Winkler" , "Johannes Berg" , "Ron Rindjunsky" , linux-wireless , "Jouni Malinen" , "Patrick McHardy" References: <1201882512.4188.66.camel@johannes.berg> <200802020031.24532.IvDoorn@gmail.com> <247d6d340802030736t4a51c4bcg92130277f84e1b58@mail.gmail.com> In-Reply-To: <247d6d340802030736t4a51c4bcg92130277f84e1b58@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Message-Id: <200802031654.54311.IvDoorn@gmail.com> (sfid-20080203_155528_181105_1CEC62B5) From: Ivo van Doorn Sender: linux-wireless-owner@vger.kernel.org List-ID: On Sunday 03 February 2008, Guy Cohen wrote: > On 2/2/08, Ivo van Doorn wrote: > > On Saturday 02 February 2008, Tomas Winkler wrote: > > > 4965 has 4 queues which are used for regular WMM. Only 11 queues > > > might be used for aggregation, but in AP mode we might map one of the > > > queues to after beacon multicast traffic. > > > > Just out of interest, and I don't know about the iwl4965 driver specifics, > > but how will you make sure those frames are send after the beacon? > > Does the beacon trigger an interrupt after each interval which allows you to queue > > the frames or is some other approach used? > > For iwl4965, mcast frames are queued into a separate HW TX FIFO (no > need to buffer at the host). Beacon periodic transmission and > controling the TX of mcast frames from the mcast FIFO are all timely > done in real-time by the device. Thanks for the explanation. Ivo