Move disconnect command handling to a common place

Move out the disconnect command handling from |ctrl_iface.c| to
|wpa_supplicant.c| so that it can be reused across the different
control interfaces (socket, dbus & binder).

Signed-off-by: Roshan Pius <rpius@google.com>

wpa_supplicant/ctrl_iface.c

@@ -9127,16 +9127,7 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
 		reply_len = wpa_supplicant_ctrl_iface_list_networks(
 			wpa_s, NULL, reply, reply_size);
 	} else if (os_strcmp(buf, "DISCONNECT") == 0) {
-#ifdef CONFIG_SME
-		wpa_s->sme.prev_bssid_set = 0;
-#endif /* CONFIG_SME */
-		wpa_s->reassociate = 0;
-		wpa_s->disconnected = 1;
-		wpa_supplicant_cancel_sched_scan(wpa_s);
-		wpa_supplicant_cancel_scan(wpa_s);
-		wpa_supplicant_deauthenticate(wpa_s,
-					      WLAN_REASON_DEAUTH_LEAVING);
-		eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
+		wpas_request_disconnection(wpa_s);
 	} else if (os_strcmp(buf, "SCAN") == 0) {
 		wpas_ctrl_scan(wpa_s, NULL, reply, reply_size, &reply_len);
 	} else if (os_strncmp(buf, "SCAN ", 5) == 0) {

wpa_supplicant/dbus/dbus_new_handlers.c

@@ -1475,10 +1475,7 @@ DBusMessage * wpas_dbus_handler_disconnect(DBusMessage *message,
 					   struct wpa_supplicant *wpa_s)
 {
 	if (wpa_s->current_ssid != NULL) {
-		wpa_s->disconnected = 1;
-		wpa_supplicant_deauthenticate(wpa_s,
-					      WLAN_REASON_DEAUTH_LEAVING);
-
+		wpas_request_disconnection(wpa_s);
 		return NULL;
 	}
 

wpa_supplicant/dbus/dbus_old_handlers.c

@@ -1069,8 +1069,7 @@ out:
 DBusMessage * wpas_dbus_iface_disconnect(DBusMessage *message,
 					 struct wpa_supplicant *wpa_s)
 {
-	wpa_s->disconnected = 1;
-	wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
+	wpas_request_disconnection(wpa_s);
 
 	return wpas_dbus_new_success_reply(message);
 }

wpa_supplicant/wpa_supplicant.c

@@ -6024,6 +6024,27 @@ void wpas_request_connection(struct wpa_supplicant *wpa_s)
 }
 
 
+/**
+ * wpas_request_disconnection - Request disconnection
+ * @wpa_s: Pointer to the network interface
+ *
+ * This function is used to request disconnection from the currently connected
+ * network. This will stop any ongoing scans and initiate deauthentication.
+ */
+void wpas_request_disconnection(struct wpa_supplicant *wpa_s)
+{
+#ifdef CONFIG_SME
+	wpa_s->sme.prev_bssid_set = 0;
+#endif /* CONFIG_SME */
+	wpa_s->reassociate = 0;
+	wpa_s->disconnected = 1;
+	wpa_supplicant_cancel_sched_scan(wpa_s);
+	wpa_supplicant_cancel_scan(wpa_s);
+	wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
+	eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
+}
+
+
 void dump_freq_data(struct wpa_supplicant *wpa_s, const char *title,
 		    struct wpa_used_freq_data *freqs_data,
 		    unsigned int len)

wpa_supplicant/wpa_supplicant_i.h

@@ -1162,6 +1162,7 @@ int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid);
 int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid,
 		    size_t ssid_len);
 void wpas_request_connection(struct wpa_supplicant *wpa_s);
+void wpas_request_disconnection(struct wpa_supplicant *wpa_s);
 int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf, size_t buflen);
 int wpas_update_random_addr(struct wpa_supplicant *wpa_s, int style);
 int wpas_update_random_addr_disassoc(struct wpa_supplicant *wpa_s);