dbus: Add method to disable channel switching with a TDLS peer

This patch adds "TDLSCancelChannelSwitch" dbus method on
"fi.w1.wpa_supplicant1.Interface" interface to disable channel switching
with a TDLS peer.

Signed-off-by: Nishant Chaprana <n.chaprana@samsung.com>

doc/dbus.doxygen

@@ -464,6 +464,15 @@ fi.w1.wpa_supplicant1.CreateInterface.
 	  <dd>A dictionary with arguments identifying the peer and channel switching behavior.</dd>
 	</dl>
       </li>
+      <li>
+	<h3>TDLSCancelChannelSwitch ( s : peer_address ) --> nothing</h3>
+	<p>Disable channel switching for a TDLS session with a peer.</p>
+	<h4>Arguments</h4>
+	<dl>
+	  <dt>s : peer_address</dt>
+	  <dd>MAC address for the peer.</dd>
+	</dl>
+      </li>
       <li>
 	<h3>VendorElemAdd ( i: frame_id, ay: ielems ) --> nothing</h3>
 	<p>Add Vendor Elements to corresponding frame ID.</p>

wpa_supplicant/dbus/dbus_new.c

@@ -3093,6 +3093,13 @@ static const struct wpa_dbus_method_desc wpas_dbus_interface_methods[] = {
 		  END_ARGS
 	  }
 	},
+	{ "TDLSCancelChannelSwitch", WPAS_DBUS_NEW_IFACE_INTERFACE,
+	  (WPADBusMethodHandler) wpas_dbus_handler_tdls_cancel_channel_switch,
+	  {
+		  { "peer_address", "s", ARG_IN },
+		  END_ARGS
+	  }
+	},
 #endif /* CONFIG_TDLS */
 	{ "VendorElemAdd", WPAS_DBUS_NEW_IFACE_INTERFACE,
 	  (WPADBusMethodHandler) wpas_dbus_handler_vendor_elem_add,

wpa_supplicant/dbus/dbus_new_handlers.c

@@ -2432,6 +2432,37 @@ wpas_dbus_handler_tdls_channel_switch(DBusMessage *message,
 	return NULL;
 }
 
+/*
+ * wpas_dbus_handler_tdls_cancel_channel_switch - Disable channel switching with TDLS peer
+ * @message: Pointer to incoming dbus message
+ * @wpa_s: wpa_supplicant structure for a network interface
+ * Returns: NULL indicating success or DBus error message on failure
+ *
+ * Handler function for "TDLSCancelChannelSwitch" method call of network
+ * interface.
+ */
+DBusMessage *
+wpas_dbus_handler_tdls_cancel_channel_switch(DBusMessage *message,
+					     struct wpa_supplicant *wpa_s)
+{
+	u8 peer[ETH_ALEN];
+	DBusMessage *error_reply;
+	int ret;
+
+	if (get_peer_hwaddr_helper(message, __func__, peer, &error_reply) < 0)
+		return error_reply;
+
+	wpa_printf(MSG_DEBUG, "dbus: TDLS_CANCEL_CHAN_SWITCH " MACSTR,
+		   MAC2STR(peer));
+
+	ret = wpa_tdls_disable_chan_switch(wpa_s->wpa, peer);
+	if (ret)
+		return wpas_dbus_error_unknown_error(
+			message, "error canceling TDLS channel switch");
+
+	return NULL;
+}
+
 #endif /* CONFIG_TDLS */
 
 

wpa_supplicant/dbus/dbus_new_handlers.h

@@ -219,6 +219,9 @@ DBusMessage * wpas_dbus_handler_tdls_teardown(DBusMessage *message,
 DBusMessage *
 wpas_dbus_handler_tdls_channel_switch(DBusMessage *message,
 				      struct wpa_supplicant *wpa_s);
+DBusMessage *
+wpas_dbus_handler_tdls_cancel_channel_switch(DBusMessage *message,
+					     struct wpa_supplicant *wpa_s);
 
 DBusMessage * wpas_dbus_handler_vendor_elem_add(DBusMessage *message,
 						struct wpa_supplicant *wpa_s);