linux-kernel - [PATCH 5.15 371/917] ath10k: Fix missing frame timestamp for beacon/probe-resp

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Date:   Mon, 15 Nov 2021 17:57:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Loic Poulain <loic.poulain@...aro.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 371/917] ath10k: Fix missing frame timestamp for beacon/probe-resp

From: Loic Poulain <loic.poulain@...aro.org>

[ Upstream commit e6dfbc3ba90cc2b619229be56b485f085a0a8e1c ]

When receiving a beacon or probe response, we should update the
boottime_ns field which is the timestamp the frame was received at.
(cf mac80211.h)

This fixes a scanning issue with Android since it relies on this
timestamp to determine when the AP has been seen for the last time
(via the nl80211 BSS_LAST_SEEN_BOOTTIME parameter).

Fixes: 5e3dd157d7e7 ("ath10k: mac80211 driver for Qualcomm Atheros 802.11ac CQA98xx devices")
Signed-off-by: Loic Poulain <loic.poulain@...aro.org>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Link: https://lore.kernel.org/r/1629811733-7927-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/ath/ath10k/wmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index b8a4bbfe10b87..7c1c2658cb5f8 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -2610,6 +2610,10 @@ int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb)
 	if (ieee80211_is_beacon(hdr->frame_control))
 		ath10k_mac_handle_beacon(ar, skb);
 
+	if (ieee80211_is_beacon(hdr->frame_control) ||
+	    ieee80211_is_probe_resp(hdr->frame_control))
+		status->boottime_ns = ktime_get_boottime_ns();
+
 	ath10k_dbg(ar, ATH10K_DBG_MGMT,
 		   "event mgmt rx skb %pK len %d ftype %02x stype %02x\n",
 		   skb, skb->len,
-- 
2.33.0