From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mout.kundenserver.de ([212.227.17.24]:50275 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932306AbdKPToT (ORCPT ); Thu, 16 Nov 2017 14:44:19 -0500 Received: from guenther.localnet ([84.157.55.145]) by mrelayeu.kundenserver.de (mreue102 [212.227.15.183]) with ESMTPSA (Nemesis) id 0MD8M0-1ePIWD0Wqa-00GdRb for ; Thu, 16 Nov 2017 20:44:17 +0100 From: Florian Hercher To: linux-wireless@vger.kernel.org Subject: ath9k: Question regarding adaptivity and ETSI compliance Date: Thu, 16 Nov 2017 20:44:16 +0100 Message-ID: <3024089.ZRiPOxTNka@guenther> (sfid-20171116_204424_616517_23F62A66) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi all, ETSI EN-300-328 in version 2.1.1 (2016-11) requires an "adaptive" behaviour of Wi-Fi Access Points, see clause 4.3.2.6.1 and annex B.7. As far as I understand this adaptive behavior requires the Wi-Fi card to stop transmitting whenever an (non Wi-Fi) interference signal with a power level of more than -70dBm/Mhz is present. Does ath9k comply with this requirement? Or more specifically: Does ath9k running on a AR9331 (MAC version: AR9330, MAC revision: 1) comply? Right now I'm trying to understand the "clear channel assessment" (CCA) related settings in the driver and I would like to ask for some clarification: The CCA related definitions in ar9003_phy.h e.g. "AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ" - are they part of the "higher" CCA function, where still decodable Wi-FI signals are handled? Where is the energy detection threshold defined, is it "thres62" in "struct ar9300_eeprom"? I'm quite confused about this and any help is highly appreciated! best regards Florian --- http://www.etsi.org/deliver/etsi_en/300300_300399/300328/02.01.01_60/ en_300328v020101p.pdf