dbus: Add MeshPeerDisconnected signal

This is similar to the control interface event MESH-PEER-DISCONNECTED.

Signed-off-by: Saurav Babu <saurav.babu@samsung.com>

doc/dbus.doxygen

@@ -2288,6 +2288,15 @@ Interface for performing mesh operations.
       <dd>A dictionary containing information of the connected mesh peer.</dd>
     </dl>
   </li>
+  <li>
+    <h3>MeshPeerDisconnected ( a{sv} : args )</h3>
+    <p></p>
+    <h4>Arguments</h4>
+    <dl>
+      <dt>a{sv} : args</dt>
+      <dd>A dictionary containing information of the disconnected mesh peer.</dd>
+    </dl>
+  </li>
 </ul>
 
 */

wpa_supplicant/dbus/dbus_new.c

@@ -894,6 +894,40 @@ void wpas_dbus_signal_mesh_peer_connected(struct wpa_supplicant *wpa_s,
 	dbus_message_unref(msg);
 }
 
+
+void wpas_dbus_signal_mesh_peer_disconnected(struct wpa_supplicant *wpa_s,
+					     const u8 *peer_addr, int reason)
+{
+	struct wpas_dbus_priv *iface;
+	DBusMessage *msg;
+	DBusMessageIter iter, dict_iter;
+
+	iface = wpa_s->global->dbus;
+
+	/* Do nothing if the control interface is not turned on */
+	if (!iface || !wpa_s->dbus_new_path)
+		return;
+
+	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
+				      WPAS_DBUS_NEW_IFACE_MESH,
+				      "MeshPeerDisconnected");
+	if (!msg)
+		return;
+
+	dbus_message_iter_init_append(msg, &iter);
+	if (!wpa_dbus_dict_open_write(&iter, &dict_iter) ||
+	    !wpa_dbus_dict_append_byte_array(&dict_iter, "PeerAddress",
+					     (const char *) peer_addr,
+					     ETH_ALEN) ||
+	    !wpa_dbus_dict_append_int32(&dict_iter, "DisconnectReason",
+					reason) ||
+	    !wpa_dbus_dict_close_write(&iter, &dict_iter))
+		wpa_printf(MSG_ERROR, "dbus: Failed to construct signal");
+	else
+		dbus_connection_send(iface->con, msg, NULL);
+	dbus_message_unref(msg);
+}
+
 #endif /* CONFIG_MESH */
 
 
@@ -3745,6 +3779,12 @@ static const struct wpa_dbus_signal_desc wpas_dbus_interface_signals[] = {
 		  END_ARGS
 	  }
 	},
+	{ "MeshPeerDisconnected", WPAS_DBUS_NEW_IFACE_MESH,
+	  {
+		  { "args", "a{sv}", ARG_OUT },
+		  END_ARGS
+	  }
+	},
 #endif /* CONFIG_MESH */
 	{ NULL, NULL, { END_ARGS } }
 };

wpa_supplicant/dbus/dbus_new.h

@@ -248,6 +248,8 @@ void wpas_dbus_signal_mesh_group_removed(struct wpa_supplicant *wpa_s,
 					 int reason);
 void wpas_dbus_signal_mesh_peer_connected(struct wpa_supplicant *wpa_s,
 					  const u8 *peer_addr);
+void wpas_dbus_signal_mesh_peer_disconnected(struct wpa_supplicant *wpa_s,
+					     const u8 *peer_addr, int reason);
 
 #else /* CONFIG_CTRL_IFACE_DBUS_NEW */
 
@@ -582,6 +584,12 @@ void wpas_dbus_signal_mesh_peer_connected(struct wpa_supplicant *wpa_s,
 {
 }
 
+static inline
+void wpas_dbus_signal_mesh_peer_disconnected(struct wpa_supplicant *wpa_s,
+					     const u8 *peer_addr, int reason)
+{
+}
+
 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
 
 #endif /* CTRL_IFACE_DBUS_H_NEW */

wpa_supplicant/mesh_mpm.c

@@ -1013,6 +1013,10 @@ static void mesh_mpm_fsm(struct wpa_supplicant *wpa_s, struct sta_info *sta,
 			wpa_msg(wpa_s, MSG_INFO, MESH_PEER_DISCONNECTED MACSTR,
 				MAC2STR(sta->addr));
 
+			/* Send D-Bus event */
+			wpas_notify_mesh_peer_disconnected(wpa_s, sta->addr,
+							   reason);
+
 			hapd->num_plinks--;
 
 			mesh_mpm_send_plink_action(wpa_s, sta,

wpa_supplicant/notify.c

@@ -885,4 +885,14 @@ void wpas_notify_mesh_peer_connected(struct wpa_supplicant *wpa_s,
 	wpas_dbus_signal_mesh_peer_connected(wpa_s, peer_addr);
 }
 
+
+void wpas_notify_mesh_peer_disconnected(struct wpa_supplicant *wpa_s,
+					const u8 *peer_addr, int reason_code)
+{
+	if (wpa_s->p2p_mgmt)
+		return;
+
+	wpas_dbus_signal_mesh_peer_disconnected(wpa_s, peer_addr, reason_code);
+}
+
 #endif /* CONFIG_MESH */

wpa_supplicant/notify.h

@@ -148,5 +148,7 @@ void wpas_notify_mesh_group_removed(struct wpa_supplicant *wpa_s,
 				    int reason_code);
 void wpas_notify_mesh_peer_connected(struct wpa_supplicant *wpa_s,
 				     const u8 *peer_addr);
+void wpas_notify_mesh_peer_disconnected(struct wpa_supplicant *wpa_s,
+					const u8 *peer_addr, int reason_code);
 
 #endif /* NOTIFY_H */