wifi: ath12k: indicate scan complete for scan canceled when scan running

ath12k prints "Received scan event for unknown vdev" when doing the
following test:
1. trigger scan
2. wait 0.2 second
3. iw reg set is issued or 11d scan complete event is sent from firmware

Reason is:
When iw reg set is issues or the 11d scan complete event is received, the
new country code will be set to the firmware, and the new regdomain info
indicated to ath12k, then the new channel list will be sent to the firmware.
The firmware will cancel the current scan after receiving WMI_SCAN_CHAN_LIST_CMDID
which is used for the new channel list, and the state of ath12k is
ATH12K_SCAN_RUNNING, then ath12k_get_ar_on_scan_abort() returns NULL and
ath12k_scan_event() returns at this point and does not indicate scan
completion to mac80211.

Indicate scan completion to mac80211 and get rid of the "Received scan
event for unknown vdev" print for the above case.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4

Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230906085746.18968-1-quic_wgong@quicinc.com

1 files changed, 12 insertions, 6 deletions

diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 135d7d7b3ed5..75ec16186d00 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -5893,8 +5893,9 @@ exit:
 	rcu_read_unlock();
 }
 
-static struct ath12k *ath12k_get_ar_on_scan_abort(struct ath12k_base *ab,
-						  u32 vdev_id)
+static struct ath12k *ath12k_get_ar_on_scan_state(struct ath12k_base *ab,
+						  u32 vdev_id,
+						  enum ath12k_scan_state state)
 {
 	int i;
 	struct ath12k_pdev *pdev;
@@ -5906,7 +5907,7 @@ static struct ath12k *ath12k_get_ar_on_scan_abort(struct ath12k_base *ab,
 			ar = pdev->ar;
 
 			spin_lock_bh(&ar->data_lock);
-			if (ar->scan.state == ATH12K_SCAN_ABORTING &&
+			if (ar->scan.state == state &&
 			    ar->scan.vdev_id == vdev_id) {
 				spin_unlock_bh(&ar->data_lock);
 				return ar;
@@ -5936,10 +5937,15 @@ static void ath12k_scan_event(struct ath12k_base *ab, struct sk_buff *skb)
 	 * aborting scan's vdev id matches this event info.
 	 */
 	if (le32_to_cpu(scan_ev.event_type) == WMI_SCAN_EVENT_COMPLETED &&
-	    le32_to_cpu(scan_ev.reason) == WMI_SCAN_REASON_CANCELLED)
-		ar = ath12k_get_ar_on_scan_abort(ab, le32_to_cpu(scan_ev.vdev_id));
-	else
+	    le32_to_cpu(scan_ev.reason) == WMI_SCAN_REASON_CANCELLED) {
+		ar = ath12k_get_ar_on_scan_state(ab, le32_to_cpu(scan_ev.vdev_id),
+						 ATH12K_SCAN_ABORTING);
+		if (!ar)
+			ar = ath12k_get_ar_on_scan_state(ab, le32_to_cpu(scan_ev.vdev_id),
+							 ATH12K_SCAN_RUNNING);
+	} else {
 		ar = ath12k_mac_get_ar_by_vdev_id(ab, le32_to_cpu(scan_ev.vdev_id));
+	}
 
 	if (!ar) {
 		ath12k_warn(ab, "Received scan event for unknown vdev");