linux-kernel - [PATCH 4.9 37/70] wlcore: Set rx_status boottime

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Message-Id: <20180917211652.248156659@linuxfoundation.org>
Date:   Tue, 18 Sep 2018 00:42:10 +0200
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 <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 37/70] wlcore: Set rx_status boottime_ns field on rx

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

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

[ Upstream commit 37a634f60fd6dfbda2c312657eec7ef0750546e7 ]

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).

Signed-off-by: Loic Poulain <loic.poulain@...aro.org>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/wireless/ti/wlcore/rx.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/ti/wlcore/rx.c
+++ b/drivers/net/wireless/ti/wlcore/rx.c
@@ -59,7 +59,7 @@ static u32 wlcore_rx_get_align_buf_size(
 static void wl1271_rx_status(struct wl1271 *wl,
 			     struct wl1271_rx_descriptor *desc,
 			     struct ieee80211_rx_status *status,
-			     u8 beacon)
+			     u8 beacon, u8 probe_rsp)
 {
 	memset(status, 0, sizeof(struct ieee80211_rx_status));
 
@@ -106,6 +106,9 @@ static void wl1271_rx_status(struct wl12
 		}
 	}
 
+	if (beacon || probe_rsp)
+		status->boottime_ns = ktime_get_boot_ns();
+
 	if (beacon)
 		wlcore_set_pending_regdomain_ch(wl, (u16)desc->channel,
 						status->band);
@@ -194,7 +197,8 @@ static int wl1271_rx_handle_data(struct
 	if (ieee80211_is_data_present(hdr->frame_control))
 		is_data = 1;
 
-	wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
+	wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon,
+			 ieee80211_is_probe_resp(hdr->frame_control));
 	wlcore_hw_set_rx_csum(wl, desc, skb);
 
 	seq_num = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;