net_iface: virtual disconnect method + wifi

Making disconnect method virtual and overriding it in wifi class

Author: andreagilardoni

libraries/SocketWrapper/SocketHelpers.h

@@ -55,5 +55,5 @@ class NetworkInterface {
 	int begin(bool blocking = true, uint64_t additional_event_mask = 0);
 
 	void end();
-	bool disconnect();
+	virtual bool disconnect();
 };

libraries/WiFi/src/WiFi.cpp

@@ -109,3 +109,18 @@ int32_t WiFiClass::RSSI() {
 	}
 	return 0;
 }
+
+bool WiFiClass::disconnect() {
+	int ret;
+	if (status() == WL_CONNECTED) {
+		ret = net_mgmt(NET_REQUEST_WIFI_DISCONNECT, netif, NULL, 0);
+
+		if (ret != 0) {
+			LOG_ERR("Error on Wifi Disconnect %d", ret);
+		}
+	}
+
+	ret = NetworkInterface::disconnect();
+
+	return ret;
+}

libraries/WiFi/src/WiFi.h

@@ -42,6 +42,7 @@ class WiFiClass : public NetworkInterface {
 
 	String firmwareVersion();
 
+	bool disconnect() override;
 private:
 	struct net_if *sta_iface = nullptr;
 	struct net_if *ap_iface = nullptr;

loader/llext_exports.c

@@ -187,6 +187,7 @@ FORCE_EXPORT_SYM(net_if_get_wifi_sap);
 FORCE_EXPORT_SYM(net_mgmt_NET_REQUEST_WIFI_CONNECT);
 FORCE_EXPORT_SYM(net_mgmt_NET_REQUEST_WIFI_IFACE_STATUS);
 FORCE_EXPORT_SYM(net_mgmt_NET_REQUEST_WIFI_AP_ENABLE);
+FORCE_EXPORT_SYM(net_mgmt_NET_REQUEST_WIFI_DISCONNECT);
 #endif
 
 #if defined(CONFIG_BT)