Linux-Wireless Archive on lore.kernel.org
 help / color / Atom feed
From: Markus Theil <markus.theil@tu-ilmenau.de>
To: linux-wireless@vger.kernel.org
Cc: kvalo@codeaurora.org, ath10k@lists.infradead.org,
	ath11k@lists.infradead.org,
	Markus Theil <markus.theil@tu-ilmenau.de>
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> (raw)

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 <markus.theil@tu-ilmenau.de>
---
 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


             reply index

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-04 15:41 Markus Theil [this message]
2020-05-04 15:41 ` [PATCH 2/2] ath11k: " Markus Theil
2020-05-04 16:36   ` Sven Eckelmann
2020-05-04 23:37   ` Rajkumar Manoharan
2020-05-05  6:53     ` Markus Theil
2020-05-05 17:31       ` Rajkumar Manoharan
2020-05-04 16:29 ` [PATCH 1/2] ath10k: " Sven Eckelmann
2020-05-04 16:33   ` Markus Theil
2020-05-04 23:46 ` Rajkumar Manoharan
2020-05-04 23:49   ` Ben Greear
2020-05-04 23:52     ` Rajkumar Manoharan
2020-05-05  0:02       ` Ben Greear
2020-05-05  7:01   ` Sven Eckelmann
2020-05-05  7:49     ` Sven Eckelmann
2020-05-05  7:55       ` Sven Eckelmann
2020-05-05 18:45         ` Rajkumar Manoharan
2020-05-05 15:37       ` Markus Theil
2020-05-05 18:32         ` Rajkumar Manoharan

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200504154122.91862-1-markus.theil@tu-ilmenau.de \
    --to=markus.theil@tu-ilmenau.de \
    --cc=ath10k@lists.infradead.org \
    --cc=ath11k@lists.infradead.org \
    --cc=kvalo@codeaurora.org \
    --cc=linux-wireless@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Wireless Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-wireless/0 linux-wireless/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-wireless linux-wireless/ https://lore.kernel.org/linux-wireless \
		linux-wireless@vger.kernel.org
	public-inbox-index linux-wireless

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-wireless


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git