From patchwork Tue Oct 27 13:48:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 313089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51999C388F9 for ; Tue, 27 Oct 2020 14:02:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C7C72225E for ; Tue, 27 Oct 2020 14:02:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603807368; bh=E5TS+HU95Vzm1dxDPh36Z9h7QIOv/TtBl8gfDA60/cs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1OpIKGRPIg3fCkhCXalp2NjlHNVzwMirnAbCzJhzMobDM7GiHJpNIgHoO5wfKtz57 kXdEqFp/377HNYSgblf3/lXYEGrGWtgv2hMcLCgB4SY0fBm5F4oBb9fhdWPEnq2nDn uaS+XuDyVQEBujSc1qoa9/GegqBeeitTGlTO6W48= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2443171AbgJ0OCq (ORCPT ); Tue, 27 Oct 2020 10:02:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:50668 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753867AbgJ0OCo (ORCPT ); Tue, 27 Oct 2020 10:02:44 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4F18722264; Tue, 27 Oct 2020 14:02:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603807363; bh=E5TS+HU95Vzm1dxDPh36Z9h7QIOv/TtBl8gfDA60/cs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FEFMNrFZz5OgFmHJpHCPKDIihrgtqufB6ANPVHaOBICNsISSKEMnOzN8OYCSdPYqB WYG903Kz0FOihomHNfB0aHm76CQTB8InuTfaWELV4r3VbZv9hpxbqAZXilafH95qJi yEEIssj1qYKr95kO89D/d0lwnpLuA95tWhLylBIY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Venkateswara Naralasetty , Markus Theil , John Deere <24601deerej@gmail.com>, Sven Eckelmann , Kalle Valo , Sasha Levin Subject: [PATCH 4.9 025/139] ath10k: provide survey info as accumulated data Date: Tue, 27 Oct 2020 14:48:39 +0100 Message-Id: <20201027134903.328561711@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027134902.130312227@linuxfoundation.org> References: <20201027134902.130312227@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Venkateswara Naralasetty [ Upstream commit 720e5c03e5cb26d33d97f55192b791bb48478aa5 ] It is expected that the returned counters by .get_survey are monotonic increasing. But the data from ath10k gets reset to zero regularly. Channel active/busy time are then showing incorrect values (less than previous or sometimes zero) for the currently active channel during successive survey dump commands. example: $ iw dev wlan0 survey dump Survey data from wlan0 frequency: 5180 MHz [in use] channel active time: 54995 ms channel busy time: 432 ms channel receive time: 0 ms channel transmit time: 59 ms ... $ iw dev wlan0 survey dump Survey data from wlan0 frequency: 5180 MHz [in use] channel active time: 32592 ms channel busy time: 254 ms channel receive time: 0 ms channel transmit time: 0 ms ... The correct way to handle this is to use the non-clearing WMI_BSS_SURVEY_REQ_TYPE_READ wmi_bss_survey_req_type. The firmware will then accumulate the survey data and handle wrap arounds. Tested-on: QCA9984 hw1.0 10.4-3.5.3-00057 Tested-on: QCA988X hw2.0 10.2.4-1.0-00047 Tested-on: QCA9888 hw2.0 10.4-3.9.0.2-00024 Tested-on: QCA4019 hw1.0 10.4-3.6-00140 Fixes: fa7937e3d5c2 ("ath10k: update bss channel survey information") Signed-off-by: Venkateswara Naralasetty Tested-by: Markus Theil Tested-by: John Deere <24601deerej@gmail.com> [sven@narfation.org: adjust commit message] Signed-off-by: Sven Eckelmann Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1592232686-28712-1-git-send-email-kvalo@codeaurora.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 2294ba311c47a..8b3fe88d1c4e7 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -6579,7 +6579,7 @@ ath10k_mac_update_bss_chan_survey(struct ath10k *ar, struct ieee80211_channel *channel) { int ret; - enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ_CLEAR; + enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ; lockdep_assert_held(&ar->conf_mutex);