From mboxrd@z Thu Jan 1 00:00:00 1970 From: manan Date: Wed, 8 Jan 2014 05:09:28 +0000 (UTC) Subject: [ath9k-devel] Question about Atheros AR9220 References: <000401ccf8ae$afafbe30$0f0f3a90$@tamu.edu> <4F544938.8060003@qca.qualcomm.com> <4F54FAAB.8010007@tamu.edu> <4F676E35.5050606@inti.gob.ar> <4F69D395.8090004@inti.gob.ar> 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 inti.gob.ar> writes: > > Thank you for the answer Adrian, i'll try with that. By the way, i've > found in the code a register called RFCNT, i guess it's the RXCNT you > mentioned. > > Gabriel > > El 20/03/2012 12:30 a.m., Adrian Chadd escribi?: > > Hi, > > > > It's likely a mixture of both. > > > > * The channel survey gives you an idea of what percentage of time the > > NIC thinks the air is busy (RCCNT). RXCNT is the time spent _RX_ing > > frames, even if they (a) fail FCS/CRC, or (b) aren't destined for it. > > It's still decoding them. So, you can calculate a rough estimation of > > the time spent doing "other" by taking RCCNT and subtracting RXCNT. > > * You should see FCS/CRC errors pop up in RX frames. There's bits in > > the RX descriptor that get set. There should be CRC error statistics > > kept by the driver somewhere accessible by debugfs. > > > > > > Adrian > > > Hi I want to know how we can change CCA mode in Atheros chipset and what is default CCA mode in AR9220. As I tested with different CCA threshold value but after making High CCA threshold it is receiving all packets with lower rssi also, is this in CCA mode 2 as Dan mentioned? How to get CCA mode the atheros chip is using? Thanks manan