From patchwork Tue Oct 20 19:43:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?0JzQsNGA0LrQvtCyINCc0LjRhdCw0LjQuyDQkNC70LXQutGB0LDQvdC00YA=?= =?utf-8?b?0L7QstC40Yc=?= X-Patchwork-Id: 287763 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=-6.5 required=3.0 tests=BAYES_00, CHARSET_FARAWAY_HEADER, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 284E3C388F7 for ; Tue, 20 Oct 2020 19:43:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1B6622282 for ; Tue, 20 Oct 2020 19:43:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2409249AbgJTTnQ convert rfc822-to-8bit (ORCPT ); Tue, 20 Oct 2020 15:43:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405175AbgJTTnQ (ORCPT ); Tue, 20 Oct 2020 15:43:16 -0400 X-Greylist: delayed 88583 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Tue, 20 Oct 2020 12:43:14 PDT Received: from pechkin.mail.miralogic.ru (pechkin.mail.miralogic.ru [IPv6:2a02:17d0:8006:2::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A52A9C0613CE; Tue, 20 Oct 2020 12:43:14 -0700 (PDT) Received: from mail.itmh.ru (unknown [IPv6:2a02:17d0:810a:100::2]) by pechkin.mail.miralogic.ru (Postfix) with ESMTP id 95EB044DCC; Wed, 21 Oct 2020 00:43:12 +0500 (YEKT) Received: from arden.corp.itmh.ru (2a02:17d0:810a:100::2) by arden.corp.itmh.ru (2a02:17d0:810a:100::2) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 21 Oct 2020 00:43:12 +0500 Received: from arden.corp.itmh.ru ([fe80::a5a9:460a:d0d8:f5cb]) by arden.corp.itmh.ru ([fe80::a5a9:460a:d0d8:f5cb%12]) with mapi id 15.00.1497.000; Wed, 21 Oct 2020 00:43:12 +0500 From: =?koi8-r?b?7cHSy8/XIO3JyMHJzCDhzMXL08HOxNLP18ne?= To: Stanislaw Gruszka CC: "linux-wireless@vger.kernel.org" , "Helmut Schaa" , Kalle Valo , "\"David S. Miller\"" , Jakub Kicinski , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "illumin@yandex.ru" Subject: [PATCH v2] rt2x00: save survey for every channel visited Thread-Topic: [PATCH v2] rt2x00: save survey for every channel visited Thread-Index: AQHWpxk+BXXDNxt6q0e4vzZbkNLD9Q== Date: Tue, 20 Oct 2020 19:43:12 +0000 Message-ID: <1603222991841.29674@itmh.ru> References: <1603134408870.78805@itmh.ru>,<20201020071243.GA302394@wp.pl> In-Reply-To: <20201020071243.GA302394@wp.pl> Accept-Language: ru-RU, en-US Content-Language: ru-RU X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [2a02:17d0:8118:10a::2] MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org rt2800 only gives you survey for current channel. Survey-based ACS algorithms are failing to perform their job when working with rt2800. Make rt2800 save survey for every channel visited and be able to give away that information. There is a bug registered https://dev.archive.openwrt.org/ticket/19081 and this patch solves the issue. Signed-off-by: Markov Mikhail --- Changes are now aggregated in rt2800lib.c. --- .../net/wireless/ralink/rt2x00/rt2800lib.c | 61 ++++++++++++++----- drivers/net/wireless/ralink/rt2x00/rt2x00.h | 10 +++ 2 files changed, 56 insertions(+), 15 deletions(-) diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index a779fe771a55..12a709d99e44 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -1228,6 +1228,17 @@ static int rt2800_check_hung(struct data_queue *queue) return queue->wd_count > 16; } +static void rt2800_update_survey(struct rt2x00_dev *rt2x00dev) +{ + struct ieee80211_channel *chan = rt2x00dev->hw->conf.chandef.chan; + struct rt2x00_chan_survey *chan_survey = + &rt2x00dev->chan_survey[chan->hw_value]; + + chan_survey->time_idle += rt2800_register_read(rt2x00dev, CH_IDLE_STA); + chan_survey->time_busy += rt2800_register_read(rt2x00dev, CH_BUSY_STA); + chan_survey->time_ext_busy += rt2800_register_read(rt2x00dev, CH_BUSY_STA_SEC); +} + void rt2800_watchdog(struct rt2x00_dev *rt2x00dev) { struct data_queue *queue; @@ -1237,6 +1248,8 @@ void rt2800_watchdog(struct rt2x00_dev *rt2x00dev) if (test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags)) return; + rt2800_update_survey(rt2x00dev); + queue_for_each(rt2x00dev, queue) { switch (queue->qid) { case QID_AC_VO: @@ -5553,6 +5566,12 @@ void rt2800_config(struct rt2x00_dev *rt2x00dev, rt2800_config_lna_gain(rt2x00dev, libconf); if (flags & IEEE80211_CONF_CHANGE_CHANNEL) { + /* + * To provide correct survey data for survey-based ACS algorithm + * we have to save survey data for current channel before switching. + */ + rt2800_update_survey(rt2x00dev); + rt2800_config_channel(rt2x00dev, libconf->conf, &libconf->rf, &libconf->channel); rt2800_config_txpower(rt2x00dev, libconf->conf->chandef.chan, @@ -10111,12 +10130,20 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev) } /* - * Create channel information array + * Create channel information and survey arrays */ info = kcalloc(spec->num_channels, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; + rt2x00dev->chan_survey = + kcalloc(spec->num_channels, sizeof(struct rt2x00_chan_survey), + GFP_KERNEL); + if (!rt2x00dev->chan_survey) { + kfree(info); + return -ENOMEM; + } + spec->channels_info = info; default_power1 = rt2800_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG1); @@ -10504,26 +10531,30 @@ int rt2800_get_survey(struct ieee80211_hw *hw, int idx, { struct rt2x00_dev *rt2x00dev = hw->priv; struct ieee80211_conf *conf = &hw->conf; - u32 idle, busy, busy_ext; + struct rt2x00_chan_survey *chan_survey = + &rt2x00dev->chan_survey[idx]; + enum nl80211_band band = NL80211_BAND_2GHZ; - if (idx != 0) + if (idx >= rt2x00dev->bands[band].n_channels) { + idx -= rt2x00dev->bands[band].n_channels; + band = NL80211_BAND_5GHZ; + } + + if (idx >= rt2x00dev->bands[band].n_channels) return -ENOENT; - survey->channel = conf->chandef.chan; + if (idx == 0) + rt2800_update_survey(rt2x00dev); - idle = rt2800_register_read(rt2x00dev, CH_IDLE_STA); - busy = rt2800_register_read(rt2x00dev, CH_BUSY_STA); - busy_ext = rt2800_register_read(rt2x00dev, CH_BUSY_STA_SEC); + survey->channel = &rt2x00dev->bands[band].channels[idx]; - if (idle || busy) { - survey->filled = SURVEY_INFO_TIME | - SURVEY_INFO_TIME_BUSY | - SURVEY_INFO_TIME_EXT_BUSY; + survey->filled = SURVEY_INFO_TIME | + SURVEY_INFO_TIME_BUSY | + SURVEY_INFO_TIME_EXT_BUSY; - survey->time = (idle + busy) / 1000; - survey->time_busy = busy / 1000; - survey->time_ext_busy = busy_ext / 1000; - } + survey->time = div_u64(chan_survey->time_idle + chan_survey->time_busy, 1000); + survey->time_busy = div_u64(chan_survey->time_busy, 1000); + survey->time_ext_busy = div_u64(chan_survey->time_ext_busy, 1000); if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) survey->filled |= SURVEY_INFO_IN_USE; diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h index ecc60d8cbb01..ae0c76067c4a 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h @@ -181,6 +181,15 @@ struct rf_channel { u32 rf4; }; +/* + * Information structure for channel survey. + */ +struct rt2x00_chan_survey { + u64 time_idle; + u64 time_busy; + u64 time_ext_busy; +}; + /* * Channel information structure */ @@ -752,6 +761,7 @@ struct rt2x00_dev { */ struct ieee80211_hw *hw; struct ieee80211_supported_band bands[NUM_NL80211_BANDS]; + struct rt2x00_chan_survey *chan_survey; enum nl80211_band curr_band; int curr_freq;