From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felix Fietkau Date: Fri, 19 Jul 2013 17:23:20 +0200 Subject: [ath9k-devel] sensitivity control for ath9k with mac80211 In-Reply-To: References: <2DF5040C00EDCD438915E297DC199E9232512664@CVA-MB001.centreville.ads.sparta.com> <51E92EA9.6000202@gmail.com> <51E940D7.1030607@gmail.com> <51E9436E.5060208@candelatech.com> Message-ID: <51E959E8.9010706@openwrt.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org On 2013-07-19 4:58 PM, Sergey Ryazanov wrote: > 2013/7/19 Ben Greear : >> On 07/19/2013 06:36 AM, Flavio Leonel wrote: >>> Ok i know that but the command iw not permited set sensitivity limit >>> >>> how i can seting this limit on atth9k , this question.. >> >> I tried messing with this some months ago and got nowhere. I could >> not figure any way to make the NIC ignore fainter signals, and I am >> not sure it is possible to make the hardware do this... >> > > At least 5k chips have a special register for CCA threshold > configuration. Modern 9k chips have not inherited this register? The CCA threshold is not the same as the threshold for signal detection. In many ways, 5k and 9k cards have a somewhat similar set of registers to configure various aspects of detection sensitivity. Some of those are set in the initvals, some are controlled by ANI. The main issue is that the driver does not expose any convenient knobs to control this. - Felix