qcacld-3.0: Implement cfg80211 abort scan API

qcacld-2.0 to qcacld-3.0 propagation

There is no support for cfg80211 abort scan API,
so implement the cfg80211 abort scan API.

Change-Id: I4632c1b4770e6b2f301d67f37005585aef401ab6
CRs-Fixed: 930870

core/hdd/src/wlan_hdd_cfg80211.c

@@ -12361,4 +12361,8 @@ static struct cfg80211_ops wlan_hdd_cfg80211_ops = {
 	.channel_switch = wlan_hdd_cfg80211_channel_switch,
 #endif
 	.set_monitor_channel = wlan_hdd_cfg80211_set_mon_ch,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) || \
+    defined(CFG80211_ABORT_SCAN)
+	.abort_scan = wlan_hdd_cfg80211_abort_scan,
+#endif
 };

core/hdd/src/wlan_hdd_scan.c

@@ -1923,13 +1923,13 @@ int wlan_hdd_cfg80211_vendor_scan(struct wiphy *wiphy,
 
 	return ret;
 }
+
 /**
  * wlan_hdd_scan_abort() - abort ongoing scan
  * @pAdapter: Pointer to interface adapter
  *
  * Return: 0 for success, non zero for failure
  */
-#ifdef FEATURE_WLAN_SCAN_PNO
 int wlan_hdd_scan_abort(hdd_adapter_t *pAdapter)
 {
 	hdd_context_t *pHddCtx = WLAN_HDD_GET_CTX(pAdapter);
@@ -1955,6 +1955,7 @@ int wlan_hdd_scan_abort(hdd_adapter_t *pAdapter)
 	return 0;
 }
 
+#ifdef FEATURE_WLAN_SCAN_PNO
 /**
  * hdd_sched_scan_callback - scheduled scan callback
  * @callbackContext: Callback context
@@ -2439,6 +2440,60 @@ int wlan_hdd_cfg80211_sched_scan_stop(struct wiphy *wiphy,
 }
 #endif /*FEATURE_WLAN_SCAN_PNO */
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) || \
+    defined(CFG80211_ABORT_SCAN)
+/**
+ * __wlan_hdd_cfg80211_abort_scan() - cfg80211 abort scan api
+ * @wiphy: Pointer to wiphy
+ * @wdev: Pointer to wireless device structure
+ *
+ * This function is used to abort an ongoing scan
+ *
+ * Return: None
+ */
+static void __wlan_hdd_cfg80211_abort_scan(struct wiphy *wiphy,
+					   struct wireless_dev *wdev)
+{
+	struct net_device *dev = wdev->netdev;
+	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);
+	hdd_context_t *hdd_ctx = wiphy_priv(wiphy);
+	int ret;
+
+	ENTER_DEV(dev);
+
+	if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam()) {
+		hdd_err("Command not allowed in FTM mode");
+		return;
+	}
+
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (!ret)
+		return;
+
+	wlan_hdd_scan_abort(adapter);
+
+	EXIT();
+}
+
+/**
+ * wlan_hdd_cfg80211_abort_scan - cfg80211 abort scan api
+ * @wiphy: Pointer to wiphy
+ * @wdev: Pointer to wireless device structure
+ *
+ * Wrapper to __wlan_hdd_cfg80211_abort_scan() -
+ * function is used to abort an ongoing scan
+ *
+ * Return: None
+ */
+void wlan_hdd_cfg80211_abort_scan(struct wiphy *wiphy,
+				  struct wireless_dev *wdev)
+{
+	cds_ssr_protect(__func__);
+	__wlan_hdd_cfg80211_abort_scan(wiphy, wdev);
+	cds_ssr_unprotect(__func__);
+}
+#endif
+
 /**
  * hdd_cleanup_scan_queue() - remove entries in scan queue
  *

core/hdd/src/wlan_hdd_scan.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2015 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2016 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -71,5 +71,11 @@ int wlan_hdd_cfg80211_vendor_scan(struct wiphy *wiphy,
 		int data_len);
 
 void hdd_cleanup_scan_queue(hdd_context_t *hdd_ctx);
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) || \
+    defined(CFG80211_ABORT_SCAN)
+void wlan_hdd_cfg80211_abort_scan(struct wiphy *wiphy,
+				  struct wireless_dev *wdev);
+#endif
 #endif /* end #if !defined(WLAN_HDD_SCAN_H) */