From mboxrd@z Thu Jan 1 00:00:00 1970 From: Baldomero Coll Date: Thu, 10 Feb 2011 17:45:05 +0100 Subject: [ath9k-devel] Progress on Ath9k HT support on Adhoc mode In-Reply-To: References: Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org 2011/2/10 Mohammed Shafi > On Thu, Feb 10, 2011 at 5:34 PM, Baldomero Coll > wrote: > > Hi all, > > > > I'm also testing the patch Alex and Benoit have released for the > community. > > After configuring my IBSS network, the station dump command shows this > [1]. > > As you can see, although the IBSS network has been created in HT mode, > one > > link doesn't seem to support MCS rates. > > I would like to know if it is possible to force the MCS scheme. I don't > know > > why the "NL80211_TXRATE_MCS" parameter is not defined in the bitrates.c > > (iw), or what I have to do to enable it. > > I don't think we can force a particular MCS rate in the station side, > we have rate control algorithms to determine the rate. > > Do you know where i can find the rate control mechanism that is been used when i create the HT IBSS network? I would like to know if such mechanism is able to switch to non-HT rates if the channel quality is poor. > > > I also wonder what rate control mechanism is been used in HT mode > (minstrel > > HT?), and whether such mechanism switches to non HT rates when the > channel > > quality is bad. > > > > I have been using wireshark to capture data transmissions between 2 PCs > > configured in IBSS HT mode. What I see in the radiotap header is that no > HT > > information is available (protocol, data rate). Do you know how the HT > > information can be added to the ratiotap header? > > If you are using wireshark, you need to take the latest bleeding edge > that has MCS rate support and also you need latest wireless-testing > that contains MCS rate update to radiotap. > I don't completely understand what do you mean. Can you tell me which version of wireshark i should use? and where i could find the latest radiotap version? > > > > Thanks for your help > > Baldo > > > > > > [1] > > > ---------------------------------------------------------------------------------------------------------------------------------------- > > sudo iw dev wlan0 station dump > > Station xx:xx:xx:xx:xx:xx (on wlan0) > > inactive time: 8392 ms > > rx bytes: 2476336 > > rx packets: 2149 > > tx bytes: 433552 > > tx packets: 1228 > > tx retries: 564 > > tx failed: 0 > > signal: -27 dBm > > signal avg: -28 dBm > > tx bitrate: 270.0 MBit/s MCS 14 40Mhz short GI > > Station xx:xx:xx:xx:xx:xx (on wlan0) > > inactive time: 200 ms > > rx bytes: 27577 > > rx packets: 434 > > tx bytes: 803 > > tx packets: 8 > > tx retries: 2 > > tx failed: 0 > > signal: -26 dBm > > signal avg: -26 dBm > > tx bitrate: 6.5 MBit/s MCS 0 > > Station xx:xx:xx:xx:xx:xx (on wlan0) > > inactive time: 96 ms > > rx bytes: 692528 > > rx packets: 18938 > > tx bytes: 2979324 > > tx packets: 2001 > > tx retries: 3340 > > tx failed: 0 > > signal: -33 dBm > > signal avg: -33 dBm > > tx bitrate: 54.0 MBit/s > > > ---------------------------------------------------------------------------------------------------------------------------------------- > > > > _______________________________________________ > > 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/20110210/436edac5/attachment-0001.htm