From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ali Abedi Date: Tue, 21 Jan 2014 15:54:14 -0500 Subject: [ath9k-devel] How to lock AMPDU length at a specific value? In-Reply-To: References: <52DEC138.4070608@mailservices.uwaterloo.ca> Message-ID: <52DEDE76.2040603@mailservices.uwaterloo.ca> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org These mostly determine the MAX AMPDU length. I also want to determine the minimum length, so that I can set min=max and lock the AMPDU length. Thank you, Ali On 21/01/2014 15:07, Kamran Nishat wrote: > As far as i know AMPDU length is determined by 3 constraints. Firs > maximum AMPDU length. second blockAck window (if there were losses > then this will play a role). Third is Max air time of the AMPDU which > is 4ms for some domain constraints. this comes into play MCS is low > and packet duration gets more than 4ms. See following function in > xmit.c for details > ath_tx_form_aggr > > > On Tue, Jan 21, 2014 at 11:49 PM, Ali Abedi > wrote: > > Hello, > > I have seen questions regarding the length of an AMPDU and how to > change > the maximum AMPDU length. > However, I require to lock the AMPDU length at a specific value. > Changing the max length does not guarantee > that all AMPDUs have a fixed length, it can be anything between 1 > to max > based on the rate of arrival of new frames. > Is there a mechanism to force the card to wait to have enough > frames so > that all AMPDUs have a fixed length that we specify? In other words, I > need all AMPDUs to aggregate X full length frames. > > Thank you, > Ali > > _______________________________________________ > ath9k-devel mailing list > ath9k-devel at lists.ath9k.org > https://lists.ath9k.org/mailman/listinfo/ath9k-devel > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20140121/e4153d00/attachment.htm