From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=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 745B2C47257 for ; Mon, 4 May 2020 15:41:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 520B8206D7 for ; Mon, 4 May 2020 15:41:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728582AbgEDPl0 (ORCPT ); Mon, 4 May 2020 11:41:26 -0400 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:58262 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727929AbgEDPlZ (ORCPT ); Mon, 4 May 2020 11:41:25 -0400 Received: from legolas.fritz.box (unknown [87.147.56.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id EA08E580065; Mon, 4 May 2020 17:41:23 +0200 (CEST) From: Markus Theil To: linux-wireless@vger.kernel.org Cc: kvalo@codeaurora.org, ath10k@lists.infradead.org, ath11k@lists.infradead.org, Markus Theil Subject: [PATCH 1/2] ath10k: use cumulative survey statistics Date: Mon, 4 May 2020 17:41:21 +0200 Message-Id: <20200504154122.91862-1-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org ath10k currently reports survey results for the last interval between each invocation of NL80211_CMD_GET_SURVEY. For concurrent invocations, this can lead to unexpectedly small results, e.g. when hostapd uses survey data and iw survey dump is invoked in parallel. Fix this by returning cumulative results, that don't depend on the last invocation. Other drivers, e.g. ath9k or mt76 also use this behavior. Signed-off-by: Markus Theil --- drivers/net/wireless/ath/ath10k/wmi.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index a81a1ab2de19..451c8275d07b 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -5802,16 +5802,16 @@ static int ath10k_wmi_event_pdev_bss_chan_info(struct ath10k *ar, survey = &ar->survey[idx]; - survey->noise = noise_floor; - survey->time = div_u64(total, cc_freq_hz); - survey->time_busy = div_u64(busy, cc_freq_hz); - survey->time_rx = div_u64(rx_bss, cc_freq_hz); - survey->time_tx = div_u64(tx, cc_freq_hz); - survey->filled |= (SURVEY_INFO_NOISE_DBM | - SURVEY_INFO_TIME | - SURVEY_INFO_TIME_BUSY | - SURVEY_INFO_TIME_RX | - SURVEY_INFO_TIME_TX); + survey->noise = noise_floor; + survey->time += div_u64(total, cc_freq_hz); + survey->time_busy += div_u64(busy, cc_freq_hz); + survey->time_rx += div_u64(rx_bss, cc_freq_hz); + survey->time_tx += div_u64(tx, cc_freq_hz); + survey->filled |= (SURVEY_INFO_NOISE_DBM | + SURVEY_INFO_TIME | + SURVEY_INFO_TIME_BUSY | + SURVEY_INFO_TIME_RX | + SURVEY_INFO_TIME_TX); exit: spin_unlock_bh(&ar->data_lock); complete(&ar->bss_survey_done); -- 2.26.2