qcacld-3.0: Don't create wifi-aware0 interface if NAN is not supported

Currently, NAN discovery interface(wifi-aware0) is created if both
host and firmware support NAN separate vdev feature. But NAN
feature capability(gEnableNanSupport) is the master of these
capabilities. Don't create wifi-aware0 if gEnableNanSupport is
disabled.
Also, don't allow NAN iface creation for the kernels less
than 4.14 as NAN interface is allowed by kernel only from 4.14.

Change-Id: Iaf10974c373b2a77d2c24a78540910f78a3dc768
CRs-Fixed: 2706997

components/nan/dispatcher/src/nan_ucfg_api.c

@@ -1101,6 +1101,12 @@ ucfg_nan_is_sta_nan_ndi_4_port_allowed(struct wlan_objmgr_psoc *psoc)
 	return psoc_nan_obj->nan_caps.sta_nan_ndi_ndi_allowed;
 }
 
+static inline bool
+ucfg_is_nan_enabled(struct nan_psoc_priv_obj *psoc_nan_obj)
+{
+	return psoc_nan_obj->cfg_param.enable;
+}
+
 static inline bool
 ucfg_nan_is_vdev_creation_supp_by_fw(struct nan_psoc_priv_obj *psoc_nan_obj)
 {
@@ -1153,6 +1159,11 @@ bool ucfg_nan_is_vdev_creation_allowed(struct wlan_objmgr_psoc *psoc)
 		return false;
 	}
 
+	if (!ucfg_is_nan_enabled(psoc_nan_obj)) {
+		nan_debug("NAN is not enabled");
+		return false;
+	}
+
 	host_support = ucfg_nan_is_vdev_creation_supp_by_host(psoc_nan_obj);
 	fw_support = ucfg_nan_is_vdev_creation_supp_by_fw(psoc_nan_obj);
 	if (!host_support || !fw_support) {

core/hdd/src/wlan_hdd_cfg80211.c

@@ -15300,7 +15300,7 @@ wlan_hdd_iftype_data_mem_free(struct hdd_context *hdd_ctx)
 #endif
 
 #if defined(WLAN_FEATURE_NAN) && \
-	   (KERNEL_VERSION(4, 19, 0) <= LINUX_VERSION_CODE)
+	   (KERNEL_VERSION(4, 14, 0) <= LINUX_VERSION_CODE)
 static void wlan_hdd_set_nan_if_mode(struct wiphy *wiphy)
 {
 	wiphy->interface_modes |= BIT(NL80211_IFTYPE_NAN);
@@ -22969,7 +22969,7 @@ wlan_hdd_cfg80211_external_auth(struct wiphy *wiphy,
 #endif
 
 #if defined(WLAN_FEATURE_NAN) && \
-	   (KERNEL_VERSION(4, 19, 0) <= LINUX_VERSION_CODE)
+	   (KERNEL_VERSION(4, 14, 0) <= LINUX_VERSION_CODE)
 static int
 wlan_hdd_cfg80211_start_nan(struct wiphy *wiphy, struct wireless_dev *wdev,
 			    struct cfg80211_nan_conf *conf)
@@ -23464,7 +23464,7 @@ static struct cfg80211_ops wlan_hdd_cfg80211_ops = {
 	.external_auth = wlan_hdd_cfg80211_external_auth,
 #endif
 #if defined(WLAN_FEATURE_NAN) && \
-	   (KERNEL_VERSION(4, 19, 0) <= LINUX_VERSION_CODE)
+	   (KERNEL_VERSION(4, 14, 0) <= LINUX_VERSION_CODE)
 	.start_nan = wlan_hdd_cfg80211_start_nan,
 	.stop_nan = wlan_hdd_cfg80211_stop_nan,
 	.add_nan_func = wlan_hdd_cfg80211_add_nan_func,

core/hdd/src/wlan_hdd_main.c

@@ -1110,7 +1110,7 @@ enum phy_ch_width hdd_map_nl_chan_width(enum nl80211_chan_width ch_width)
 }
 
 #if defined(WLAN_FEATURE_NAN) && \
-	   (KERNEL_VERSION(4, 19, 0) <= LINUX_VERSION_CODE)
+	   (KERNEL_VERSION(4, 14, 0) <= LINUX_VERSION_CODE)
 /**
  * wlan_hdd_convert_nan_type() - Convert nl type to qdf type
  * @nl_type: NL80211 interface type
@@ -1142,6 +1142,11 @@ static void wlan_hdd_set_nan_if_type(struct hdd_adapter *adapter)
 {
 	adapter->wdev.iftype = NL80211_IFTYPE_NAN;
 }
+
+static bool wlan_hdd_is_vdev_creation_allowed(struct wlan_objmgr_psoc *psoc)
+{
+	return ucfg_nan_is_vdev_creation_allowed(psoc);
+}
 #else
 static QDF_STATUS wlan_hdd_convert_nan_type(enum nl80211_iftype nl_type,
 					    enum QDF_OPMODE *out_qdf_type)
@@ -1152,6 +1157,11 @@ static QDF_STATUS wlan_hdd_convert_nan_type(enum nl80211_iftype nl_type,
 static void wlan_hdd_set_nan_if_type(struct hdd_adapter *adapter)
 {
 }
+
+static bool wlan_hdd_is_vdev_creation_allowed(struct wlan_objmgr_psoc *psoc)
+{
+	return false;
+}
 #endif
 
 QDF_STATUS hdd_nl_to_qdf_iface_type(enum nl80211_iftype nl_type,
@@ -13565,7 +13575,7 @@ hdd_open_adapters_for_mission_mode(struct hdd_context *hdd_ctx)
 	 * Create separate interface (wifi-aware0) for NAN. All NAN commands
 	 * should go on this new interface.
 	 */
-	if (ucfg_nan_is_vdev_creation_allowed(hdd_ctx->psoc)) {
+	if (wlan_hdd_is_vdev_creation_allowed(hdd_ctx->psoc)) {
 		mac_addr = wlan_hdd_get_intf_addr(hdd_ctx, QDF_NAN_DISC_MODE);
 		if (!mac_addr)
 			goto err_close_adapters;