miracle-wifid: add Link.P2PState for checking P2P supporting status

src/wifi/wifid-dbus.c

@@ -631,6 +631,24 @@ static int link_dbus_unmanage(sd_bus_message *msg,
 	return sd_bus_reply_method_return(msg, NULL);
 }
 
+static int link_dbus_get_p2p_state(sd_bus *bus,
+				      const char *path,
+				      const char *interface,
+				      const char *property,
+				      sd_bus_message *reply,
+				      void *data,
+				      sd_bus_error *err)
+{
+	struct link *l = data;
+	int r;
+
+	r = sd_bus_message_append(reply, "i", link_get_p2p_state(l));
+	if (r < 0)
+		return r;
+
+	return 1;
+}
+
 static int link_dbus_get_p2p_scanning(sd_bus *bus,
 				      const char *path,
 				      const char *interface,
@@ -742,6 +760,11 @@ static const sd_bus_vtable link_dbus_vtable[] = {
 				 link_dbus_get_managed,
 				 0,
 				 SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+	SD_BUS_PROPERTY("P2PState",
+				 "i",
+				 link_dbus_get_p2p_state,
+				 0,
+				 SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 	SD_BUS_WRITABLE_PROPERTY("P2PScanning",
 				 "b",
 				 link_dbus_get_p2p_scanning,

src/wifi/wifid-link.c

@@ -155,6 +155,26 @@ bool link_is_using_dev(struct link *l)
     return l->use_dev;
 }
 
+int link_get_p2p_state(struct link *l)
+{
+	return l->p2p_state;
+}
+
+int link_set_p2p_state(struct link *l, int state)
+{
+	if (!l)
+		return log_EINVAL();
+	if (l->p2p_state == state)
+		return 0;
+	if(-1 > state || 1 < state)
+		return log_EINVAL();
+
+	l->p2p_state = state;
+	link_dbus_properties_changed(l, "P2PState", NULL);
+
+	return 0;
+}
+
 bool link_get_managed(struct link *l)
 {
 	return l->managed;
@@ -184,6 +204,19 @@ int link_set_managed(struct link *l, bool set)
 	return 0;
 }
 
+void link_supplicant_p2p_state_known(struct link *l, int state)
+{
+	if (!l)
+		return log_vEINVAL();
+	if (l->p2p_state == state)
+		return;
+	if(-1 > state || 1 < state)
+		return log_vEINVAL();
+
+	l->p2p_state = state;
+	link_dbus_properties_changed(l, "P2PState", NULL);
+}
+
 void link_supplicant_managed(struct link *l)
 {
 	if(l->managed) {

src/wifi/wifid-supplicant.c

@@ -1702,12 +1702,14 @@ static int supplicant_status_fn(struct wpas *w,
 
 	if (!p2p_state) {
 		log_warning("wpa_supplicant or driver does not support P2P");
+		link_supplicant_p2p_state_known(s->l, -1);
 	} else if (!strcmp(p2p_state, "DISABLED")) {
 		log_warning("P2P support disabled on given interface");
+		link_supplicant_p2p_state_known(s->l, -1);
 	} else {
 		s->has_p2p = true;
 
-		link_supplicant_managed(s->l);
+		link_supplicant_p2p_state_known(s->l, 1);
 
 		r = wpas_message_new_request(s->bus_global,
 					     "SET",
@@ -2579,6 +2581,7 @@ static int supplicant_timer_fn(sd_event_source *source,
 		} else {
 			/* wpas is running smoothly, disable timer */
 			sd_event_source_set_enabled(source, SD_EVENT_OFF);
+			link_supplicant_managed(s->l);
 		}
 	} else {
 		/* Who armed this timer? What timer is this? */

src/wifi/wifid.h

@@ -130,6 +130,7 @@ struct link {
 	char *friendly_name;
 	char *wfd_subelements;
     char *mac_addr;
+	int p2p_state;		/* 0: unknown, 1: supported, -1: unsupproted */
 
 	size_t peer_cnt;
 	struct shl_htable peers;
@@ -170,12 +171,15 @@ int link_set_wfd_subelements(struct link *l, const char *val);
 const char *link_get_wfd_subelements(struct link *l);
 int link_set_p2p_scanning(struct link *l, bool set);
 bool link_get_p2p_scanning(struct link *l);
+int link_get_p2p_state(struct link *l);
 const char *link_get_mac_addr(struct link *l);
 
 void link_supplicant_managed(struct link *l);
 void link_supplicant_started(struct link *l);
 void link_supplicant_stopped(struct link *l);
 void link_supplicant_p2p_scan_changed(struct link *l, bool new_value);
+/* 0: unknown, -1: unsupported, 1: supported */
+void link_supplicant_p2p_state_known(struct link *l, int state);
 
 _shl_sentinel_
 void link_dbus_properties_changed(struct link *l, const char *prop, ...);