diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index f6a46d2..260c0ae 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -129,6 +129,13 @@
 CFLAGS += -Werror -DEAPOL_TEST
 endif
 
+ifdef CONFIG_CODE_COVERAGE
+CFLAGS += -O0 -fprofile-arcs -ftest-coverage
+LIBS += -lgcov
+LIBS_c += -lgcov
+LIBS_p += -lgcov
+endif
+
 ifdef CONFIG_HT_OVERRIDES
 CFLAGS += -DCONFIG_HT_OVERRIDES
 endif
@@ -1672,7 +1679,8 @@
 clean:
 	$(MAKE) -C ../src clean
 	$(MAKE) -C dbus clean
-	rm -f core *~ *.o *.d eap_*.so $(ALL) $(WINALL) eapol_test preauth_test
+	rm -f core *~ *.o *.d *.gcno *.gcda *.gcov
+	rm -f eap_*.so $(ALL) $(WINALL) eapol_test preauth_test
 	rm -f wpa_priv
 	rm -f nfc_pw_token
 
diff --git a/wpa_supplicant/dbus/Makefile b/wpa_supplicant/dbus/Makefile
index d64c65c..f355ebe 100644
--- a/wpa_supplicant/dbus/Makefile
+++ b/wpa_supplicant/dbus/Makefile
@@ -1,7 +1,7 @@
 all: libwpadbus.a
 
 clean:
-	rm -f *~ *.o *.d
+	rm -f *~ *.o *.d *.gcno *.gcda *.gcov
 	rm -f libwpadbus.a
 
 install:
diff --git a/wpa_supplicant/dbus/dbus_new.c b/wpa_supplicant/dbus/dbus_new.c
index 9736e8f..f40d421 100644
--- a/wpa_supplicant/dbus/dbus_new.c
+++ b/wpa_supplicant/dbus/dbus_new.c
@@ -2516,6 +2516,15 @@
 	  }
 	},
 #endif /* CONFIG_NO_CONFIG_BLOBS */
+	{ "SetPKCS11EngineAndModulePath", WPAS_DBUS_NEW_IFACE_INTERFACE,
+	  (WPADBusMethodHandler)
+	  &wpas_dbus_handler_set_pkcs11_engine_and_module_path,
+	  {
+		  { "pkcs11_engine_path", "s", ARG_IN },
+		  { "pkcs11_module_path", "s", ARG_IN },
+		  END_ARGS
+	  }
+	},
 #ifdef CONFIG_WPS
 	{ "Start", WPAS_DBUS_NEW_IFACE_WPS,
 	  (WPADBusMethodHandler) &wpas_dbus_handler_wps_start,
@@ -2843,6 +2852,14 @@
 	  wpas_dbus_getter_scan_interval,
 	  wpas_dbus_setter_scan_interval
 	},
+	{ "PKCS11EnginePath", WPAS_DBUS_NEW_IFACE_INTERFACE, "s",
+	  wpas_dbus_getter_pkcs11_engine_path,
+	  NULL
+	},
+	{ "PKCS11ModulePath", WPAS_DBUS_NEW_IFACE_INTERFACE, "s",
+	  wpas_dbus_getter_pkcs11_module_path,
+	  NULL
+	},
 #ifdef CONFIG_WPS
 	{ "ProcessCredentials", WPAS_DBUS_NEW_IFACE_WPS, "b",
 	  wpas_dbus_getter_process_credentials,
diff --git a/wpa_supplicant/dbus/dbus_new_handlers.c b/wpa_supplicant/dbus/dbus_new_handlers.c
index 0a80521..fdf9a0a 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers.c
@@ -2162,6 +2162,63 @@
 
 
 /**
+ * wpas_dbus_handler_set_pkcs11_engine_and_module_path - Set PKCS #11 engine and module path
+ * @message: Pointer to incoming dbus message
+ * @wpa_s: %wpa_supplicant data structure
+ * Returns: A dbus message containing an error on failure or NULL on success
+ *
+ * Sets the PKCS #11 engine and module path.
+ */
+DBusMessage * wpas_dbus_handler_set_pkcs11_engine_and_module_path(
+	DBusMessage *message, struct wpa_supplicant *wpa_s)
+{
+	DBusMessageIter iter;
+	char *value = NULL;
+	char *pkcs11_engine_path = NULL;
+	char *pkcs11_module_path = NULL;
+
+	dbus_message_iter_init(message, &iter);
+	dbus_message_iter_get_basic(&iter, &value);
+	if (value == NULL) {
+		return dbus_message_new_error(
+			message, DBUS_ERROR_INVALID_ARGS,
+			"Invalid pkcs11_engine_path argument");
+	}
+	/* Empty path defaults to NULL */
+	if (os_strlen(value))
+		pkcs11_engine_path = value;
+
+	dbus_message_iter_next(&iter);
+	dbus_message_iter_get_basic(&iter, &value);
+	if (value == NULL) {
+		os_free(pkcs11_engine_path);
+		return dbus_message_new_error(
+			message, DBUS_ERROR_INVALID_ARGS,
+			"Invalid pkcs11_module_path argument");
+	}
+	/* Empty path defaults to NULL */
+	if (os_strlen(value))
+		pkcs11_module_path = value;
+
+	if (wpas_set_pkcs11_engine_and_module_path(wpa_s, pkcs11_engine_path,
+						   pkcs11_module_path))
+		return dbus_message_new_error(
+			message, DBUS_ERROR_FAILED,
+			"Reinit of the EAPOL state machine with the new PKCS "
+			"#11 engine and module path failed.");
+
+	wpa_dbus_mark_property_changed(
+		wpa_s->global->dbus, wpa_s->dbus_new_path,
+		WPAS_DBUS_NEW_IFACE_INTERFACE, "PKCS11EnginePath");
+	wpa_dbus_mark_property_changed(
+		wpa_s->global->dbus, wpa_s->dbus_new_path,
+		WPAS_DBUS_NEW_IFACE_INTERFACE, "PKCS11ModulePath");
+
+	return NULL;
+}
+
+
+/**
  * wpas_dbus_getter_capabilities - Return interface capabilities
  * @iter: Pointer to incoming dbus message iter
  * @error: Location to store error on failure
@@ -3177,6 +3234,76 @@
 
 
 /**
+ * wpas_dbus_getter_pkcs11_engine_path - Get PKCS #11 engine path
+ * @iter: Pointer to incoming dbus message iter
+ * @error: Location to store error on failure
+ * @user_data: Function specific data
+ * Returns: A dbus message containing the PKCS #11 engine path
+ *
+ * Getter for "PKCS11EnginePath" property.
+ */
+dbus_bool_t wpas_dbus_getter_pkcs11_engine_path(DBusMessageIter *iter,
+						DBusError *error,
+						void *user_data)
+{
+	struct wpa_supplicant *wpa_s = user_data;
+	const char *pkcs11_engine_path;
+
+	if (wpa_s->conf == NULL) {
+		wpa_printf(MSG_ERROR,
+			   "wpas_dbus_getter_pkcs11_engine_path[dbus]: An "
+			   "error occurred getting the PKCS #11 engine path.");
+		dbus_set_error_const(
+			error, DBUS_ERROR_FAILED,
+			"An error occured getting the PKCS #11 engine path.");
+		return FALSE;
+	}
+
+	if (wpa_s->conf->pkcs11_engine_path == NULL)
+		pkcs11_engine_path = "";
+	else
+		pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
+	return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_STRING,
+						&pkcs11_engine_path, error);
+}
+
+
+/**
+ * wpas_dbus_getter_pkcs11_module_path - Get PKCS #11 module path
+ * @iter: Pointer to incoming dbus message iter
+ * @error: Location to store error on failure
+ * @user_data: Function specific data
+ * Returns: A dbus message containing the PKCS #11 module path
+ *
+ * Getter for "PKCS11ModulePath" property.
+ */
+dbus_bool_t wpas_dbus_getter_pkcs11_module_path(DBusMessageIter *iter,
+						DBusError *error,
+						void *user_data)
+{
+	struct wpa_supplicant *wpa_s = user_data;
+	const char *pkcs11_module_path;
+
+	if (wpa_s->conf == NULL) {
+		wpa_printf(MSG_ERROR,
+			   "wpas_dbus_getter_pkcs11_module_path[dbus]: An "
+			   "error occurred getting the PKCS #11 module path.");
+		dbus_set_error_const(
+			error, DBUS_ERROR_FAILED,
+			"An error occured getting the PKCS #11 module path.");
+		return FALSE;
+	}
+
+	if (wpa_s->conf->pkcs11_module_path == NULL)
+		pkcs11_module_path = "";
+	else
+		pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
+	return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_STRING,
+						&pkcs11_module_path, error);
+}
+
+
+/**
  * wpas_dbus_getter_blobs - Get all blobs defined for this interface
  * @iter: Pointer to incoming dbus message iter
  * @error: Location to store error on failure
diff --git a/wpa_supplicant/dbus/dbus_new_handlers.h b/wpa_supplicant/dbus/dbus_new_handlers.h
index aa3316b..c066944 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers.h
+++ b/wpa_supplicant/dbus/dbus_new_handlers.h
@@ -122,6 +122,9 @@
 DBusMessage * wpas_dbus_handler_remove_blob(DBusMessage *message,
 					    struct wpa_supplicant *wpa_s);
 
+DBusMessage * wpas_dbus_handler_set_pkcs11_engine_and_module_path(
+	DBusMessage *message, struct wpa_supplicant *wpa_s);
+
 DBusMessage * wpas_dbus_handler_flush_bss(DBusMessage *message,
 					  struct wpa_supplicant *wpa_s);
 
@@ -218,6 +221,14 @@
 dbus_bool_t wpas_dbus_getter_networks(DBusMessageIter *iter, DBusError *error,
 				      void *user_data);
 
+dbus_bool_t wpas_dbus_getter_pkcs11_engine_path(DBusMessageIter *iter,
+						DBusError *error,
+						void *user_data);
+
+dbus_bool_t wpas_dbus_getter_pkcs11_module_path(DBusMessageIter *iter,
+						DBusError *error,
+						void *user_data);
+
 dbus_bool_t wpas_dbus_getter_blobs(DBusMessageIter *iter, DBusError *error,
 				   void *user_data);
 
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index b9481f6..4d9eea8 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -1203,6 +1203,7 @@
 		if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
 			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
 				"stopped scan processing");
+			wpa_s->scan_req = wpa_s->last_scan_req;
 			wpa_s->sta_scan_pending = 1;
 			wpa_supplicant_req_scan(wpa_s, 5, 0);
 			return -1;
@@ -1392,7 +1393,6 @@
 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 					      union wpa_event_data *data)
 {
-	const char *rn, *rn2;
 	struct wpa_supplicant *ifs;
 
 	if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
@@ -1407,25 +1407,12 @@
 	}
 
 	/*
-	 * Check other interfaces to see if they have the same radio-name. If
+	 * Check other interfaces to see if they share the same radio. If
 	 * so, they get updated with this same scan info.
 	 */
-	if (!wpa_s->driver->get_radio_name)
-		return;
-
-	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
-	if (rn == NULL || rn[0] == '\0')
-		return;
-
-	wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
-		"sharing same radio (%s) in event_scan_results", rn);
-
-	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
-		if (ifs == wpa_s || !ifs->driver->get_radio_name)
-			continue;
-
-		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
-		if (rn2 && os_strcmp(rn, rn2) == 0) {
+	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
+			 radio_list) {
+		if (ifs != wpa_s) {
 			wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
 				   "sibling", ifs->ifname);
 			_wpa_supplicant_event_scan_results(ifs, data, 0);
@@ -2670,7 +2657,6 @@
 
 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
 {
-	const char *rn, *rn2;
 	struct wpa_supplicant *ifs;
 
 	if (wpa_s->drv_priv == NULL)
@@ -2685,25 +2671,12 @@
 #endif /* CONFIG_P2P */
 
 	/*
-	 * Check other interfaces to see if they have the same radio-name. If
+	 * Check other interfaces to see if they share the same radio. If
 	 * so, they get updated with this same hw mode info.
 	 */
-	if (!wpa_s->driver->get_radio_name)
-		return;
-
-	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
-	if (rn == NULL || rn[0] == '\0')
-		return;
-
-	wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
-		"sharing same radio (%s) in event_channel_list_change", rn);
-
-	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
-		if (ifs == wpa_s || !ifs->driver->get_radio_name)
-			continue;
-
-		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
-		if (rn2 && os_strcmp(rn, rn2) == 0) {
+	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
+			 radio_list) {
+		if (ifs != wpa_s) {
 			wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
 				   ifs->ifname);
 			free_hw_features(ifs);
@@ -3199,6 +3172,20 @@
 		break;
 	case EVENT_INTERFACE_DISABLED:
 		wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
+#ifdef CONFIG_P2P
+		if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
+		    (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
+		     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
+			/*
+			 * The interface was externally disabled. Remove
+			 * it assuming an external entity will start a
+			 * new session if needed.
+			 */
+			wpas_p2p_disconnect(wpa_s);
+			break;
+		}
+#endif /* CONFIG_P2P */
+
 		wpa_supplicant_mark_disassoc(wpa_s);
 		wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
 		break;
diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c
index 40fbffb..790d442 100644
--- a/wpa_supplicant/p2p_supplicant.c
+++ b/wpa_supplicant/p2p_supplicant.c
@@ -6308,7 +6308,6 @@
 
 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
 {
-	const char *rn, *rn2;
 	struct wpa_supplicant *ifs;
 
 	if (wpa_s->wpa_state > WPA_SCANNING) {
@@ -6318,20 +6317,9 @@
 		return P2P_CONCURRENT_SEARCH_DELAY;
 	}
 
-	if (!wpa_s->driver->get_radio_name)
-		return 0;
-	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
-	if (rn == NULL || rn[0] == '\0')
-		return 0;
-
-	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
-		if (ifs == wpa_s || !ifs->driver->get_radio_name)
-			continue;
-
-		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
-		if (!rn2 || os_strcmp(rn, rn2) != 0)
-			continue;
-		if (ifs->wpa_state > WPA_SCANNING) {
+	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
+			 radio_list) {
+		if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
 			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
 				"delay due to concurrent operation on "
 				"interface %s",
diff --git a/wpa_supplicant/scan.c b/wpa_supplicant/scan.c
index 625ff28..f38dfbb 100644
--- a/wpa_supplicant/scan.c
+++ b/wpa_supplicant/scan.c
@@ -545,7 +545,6 @@
 {
 	struct wpa_supplicant *wpa_s = eloop_ctx;
 	struct wpa_ssid *ssid;
-	enum scan_req_type scan_req = NORMAL_SCAN_REQ;
 	int ret;
 	struct wpabuf *extra_ie = NULL;
 	struct wpa_driver_scan_params params;
@@ -630,7 +629,7 @@
 			max_ssids = WPAS_MAX_SCAN_SSIDS;
 	}
 
-	scan_req = wpa_s->scan_req;
+	wpa_s->last_scan_req = wpa_s->scan_req;
 	wpa_s->scan_req = NORMAL_SCAN_REQ;
 
 	os_memset(&params, 0, sizeof(params));
@@ -648,7 +647,8 @@
 		goto scan;
 	}
 
-	if (scan_req != MANUAL_SCAN_REQ && wpa_s->connect_without_scan) {
+	if (wpa_s->last_scan_req != MANUAL_SCAN_REQ &&
+	    wpa_s->connect_without_scan) {
 		for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 			if (ssid == wpa_s->connect_without_scan)
 				break;
@@ -687,7 +687,8 @@
 		}
 	}
 
-	if (scan_req != MANUAL_SCAN_REQ && wpa_s->conf->ap_scan == 2) {
+	if (wpa_s->last_scan_req != MANUAL_SCAN_REQ &&
+	    wpa_s->conf->ap_scan == 2) {
 		wpa_s->connect_without_scan = NULL;
 		wpa_s->prev_scan_wildcard = 0;
 		wpa_supplicant_assoc_try(wpa_s, ssid);
@@ -843,7 +844,8 @@
 	 * station interface when we are not configured to prefer station
 	 * connection and a concurrent operation is already in process.
 	 */
-	if (wpa_s->scan_for_connection && scan_req == NORMAL_SCAN_REQ &&
+	if (wpa_s->scan_for_connection &&
+	    wpa_s->last_scan_req == NORMAL_SCAN_REQ &&
 	    !scan_params->freqs && !params.freqs &&
 	    wpas_is_p2p_prioritized(wpa_s) &&
 	    wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
@@ -874,7 +876,7 @@
 		if (prev_state != wpa_s->wpa_state)
 			wpa_supplicant_set_state(wpa_s, prev_state);
 		/* Restore scan_req since we will try to scan again */
-		wpa_s->scan_req = scan_req;
+		wpa_s->scan_req = wpa_s->last_scan_req;
 		wpa_supplicant_req_scan(wpa_s, 1, 0);
 	} else {
 		wpa_s->scan_for_connection = 0;
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index 4e8d016..fffecd4 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -1973,6 +1973,59 @@
 
 
 /**
+ * wpas_set_pkcs11_engine_and_module_path - Set PKCS #11 engine and module path
+ * @wpa_s: wpa_supplicant structure for a network interface
+ * @pkcs11_engine_path: PKCS #11 engine path or NULL
+ * @pkcs11_module_path: PKCS #11 module path or NULL
+ * Returns: 0 on success; -1 on failure
+ *
+ * Sets the PKCS #11 engine and module path. Both have to be NULL or a valid
+ * path. If resetting the EAPOL state machine with the new PKCS #11 engine and
+ * module path fails the paths will be reset to the default value (NULL).
+ */
+int wpas_set_pkcs11_engine_and_module_path(struct wpa_supplicant *wpa_s,
+					   const char *pkcs11_engine_path,
+					   const char *pkcs11_module_path)
+{
+	char *pkcs11_engine_path_copy = NULL;
+	char *pkcs11_module_path_copy = NULL;
+
+	if (pkcs11_engine_path != NULL) {
+		pkcs11_engine_path_copy = os_strdup(pkcs11_engine_path);
+		if (pkcs11_engine_path_copy == NULL)
+			return -1;
+	}
+	if (pkcs11_module_path != NULL) {
+		pkcs11_module_path_copy = os_strdup(pkcs11_module_path);
+		if (pkcs11_engine_path_copy == NULL) {
+			os_free(pkcs11_engine_path_copy);
+			return -1;
+		}
+	}
+
+	os_free(wpa_s->conf->pkcs11_engine_path);
+	os_free(wpa_s->conf->pkcs11_module_path);
+	wpa_s->conf->pkcs11_engine_path = pkcs11_engine_path_copy;
+	wpa_s->conf->pkcs11_module_path = pkcs11_module_path_copy;
+
+	wpa_sm_set_eapol(wpa_s->wpa, NULL);
+	eapol_sm_deinit(wpa_s->eapol);
+	wpa_s->eapol = NULL;
+	if (wpa_supplicant_init_eapol(wpa_s)) {
+		/* Error -> Reset paths to the default value (NULL) once. */
+		if (pkcs11_engine_path != NULL && pkcs11_module_path != NULL)
+			wpas_set_pkcs11_engine_and_module_path(wpa_s, NULL,
+							       NULL);
+
+		return -1;
+	}
+	wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
+
+	return 0;
+}
+
+
+/**
  * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
  * @wpa_s: wpa_supplicant structure for a network interface
  * @ap_scan: AP scan mode
@@ -2834,10 +2887,112 @@
 }
 
 
+static struct wpa_radio * radio_add_interface(struct wpa_supplicant *wpa_s,
+					      const char *rn)
+{
+	struct wpa_supplicant *iface = wpa_s->global->ifaces;
+	struct wpa_radio *radio;
+
+	while (rn && iface) {
+		radio = iface->radio;
+		if (radio && os_strcmp(rn, radio->name) == 0) {
+			wpa_printf(MSG_DEBUG, "Add interface %s to existing radio %s",
+				   wpa_s->ifname, rn);
+			dl_list_add(&radio->ifaces, &wpa_s->radio_list);
+			return radio;
+		}
+	}
+
+	wpa_printf(MSG_DEBUG, "Add interface %s to a new radio %s",
+		   wpa_s->ifname, rn ? rn : "N/A");
+	radio = os_zalloc(sizeof(*radio));
+	if (radio == NULL)
+		return NULL;
+
+	if (rn)
+		os_strlcpy(radio->name, rn, sizeof(radio->name));
+	dl_list_init(&radio->ifaces);
+	dl_list_add(&radio->ifaces, &wpa_s->radio_list);
+
+	return radio;
+}
+
+
+static void radio_remove_interface(struct wpa_supplicant *wpa_s)
+{
+	struct wpa_radio *radio = wpa_s->radio;
+
+	if (!radio)
+		return;
+
+	wpa_printf(MSG_DEBUG, "Remove interface %s from radio %s",
+		   wpa_s->ifname, radio->name);
+	dl_list_del(&wpa_s->radio_list);
+	wpa_s->radio = NULL;
+
+	if (!dl_list_empty(&radio->ifaces))
+		return; /* Interfaces remain for this radio */
+
+	wpa_printf(MSG_DEBUG, "Remove radio %s", radio->name);
+	os_free(radio);
+}
+
+
+static int wpas_init_driver(struct wpa_supplicant *wpa_s,
+			    struct wpa_interface *iface)
+{
+	const char *ifname, *driver, *rn;
+
+	driver = iface->driver;
+next_driver:
+	if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
+		return -1;
+
+	wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
+	if (wpa_s->drv_priv == NULL) {
+		const char *pos;
+		pos = driver ? os_strchr(driver, ',') : NULL;
+		if (pos) {
+			wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
+				"driver interface - try next driver wrapper");
+			driver = pos + 1;
+			goto next_driver;
+		}
+		wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
+			"interface");
+		return -1;
+	}
+	if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
+		wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
+			"driver_param '%s'", wpa_s->conf->driver_param);
+		return -1;
+	}
+
+	ifname = wpa_drv_get_ifname(wpa_s);
+	if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
+			"interface name with '%s'", ifname);
+		os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
+	}
+
+	if (wpa_s->driver->get_radio_name)
+		rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
+	else
+		rn = NULL;
+	if (rn && rn[0] == '\0')
+		rn = NULL;
+
+	wpa_s->radio = radio_add_interface(wpa_s, rn);
+	if (wpa_s->radio == NULL)
+		return -1;
+
+	return 0;
+}
+
+
 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
 				     struct wpa_interface *iface)
 {
-	const char *ifname, *driver;
 	struct wpa_driver_capa capa;
 
 	wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
@@ -2929,38 +3084,9 @@
 	 * L2 receive handler so that association events are processed before
 	 * EAPOL-Key packets if both become available for the same select()
 	 * call. */
-	driver = iface->driver;
-next_driver:
-	if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
+	if (wpas_init_driver(wpa_s, iface) < 0)
 		return -1;
 
-	wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
-	if (wpa_s->drv_priv == NULL) {
-		const char *pos;
-		pos = driver ? os_strchr(driver, ',') : NULL;
-		if (pos) {
-			wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
-				"driver interface - try next driver wrapper");
-			driver = pos + 1;
-			goto next_driver;
-		}
-		wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
-			"interface");
-		return -1;
-	}
-	if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
-		wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
-			"driver_param '%s'", wpa_s->conf->driver_param);
-		return -1;
-	}
-
-	ifname = wpa_drv_get_ifname(wpa_s);
-	if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
-		wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
-			"interface name with '%s'", ifname);
-		os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
-	}
-
 	if (wpa_supplicant_init_wpa(wpa_s) < 0)
 		return -1;
 
@@ -3131,6 +3257,8 @@
 	}
 #endif /* CONFIG_P2P */
 
+	radio_remove_interface(wpa_s);
+
 	if (wpa_s->drv_priv)
 		wpa_drv_deinit(wpa_s);
 
@@ -3987,32 +4115,13 @@
  */
 int wpas_wpa_is_in_progress(struct wpa_supplicant *wpa_s, int include_current)
 {
-	const char *rn, *rn2;
 	struct wpa_supplicant *ifs;
 
-	if (!wpa_s->driver->get_radio_name) {
-		if (include_current && wpas_conn_in_progress(wpa_s)) {
-			wpa_dbg(wpa_s, MSG_DEBUG, "Connection is in progress on interface %s - defer",
-				wpa_s->ifname);
-			return 1;
-		}
-
-                return 0;
-	}
-
-	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
-	if (rn == NULL || rn[0] == '\0')
-		return 0;
-
-	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
+	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
+			 radio_list) {
 		if (!include_current && ifs == wpa_s)
 			continue;
-		if (!ifs->driver->get_radio_name)
-			continue;
 
-		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
-		if (!rn2 || os_strcmp(rn, rn2) != 0)
-			continue;
 		if (wpas_conn_in_progress(ifs)) {
 			wpa_dbg(wpa_s, MSG_DEBUG, "Connection is in progress "
 				"on interface %s - defer", ifs->ifname);
@@ -4043,7 +4152,6 @@
 int get_shared_radio_freqs(struct wpa_supplicant *wpa_s,
 			   int *freq_array, unsigned int len)
 {
-	const char *rn, *rn2;
 	struct wpa_supplicant *ifs;
 	u8 bssid[ETH_ALEN];
 	int freq;
@@ -4072,20 +4180,9 @@
 		return idx;
 	}
 
-	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
-	if (rn == NULL || rn[0] == '\0') {
-		dump_freq_array(wpa_s, "get_radio_name failed",
-				freq_array, idx);
-		return idx;
-	}
-
-	for (ifs = wpa_s->global->ifaces; ifs && idx < len;
-	     ifs = ifs->next) {
-		if (wpa_s == ifs || !ifs->driver->get_radio_name)
-			continue;
-
-		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
-		if (!rn2 || os_strcmp(rn, rn2) != 0)
+	dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
+			 radio_list) {
+		if (wpa_s == ifs)
 			continue;
 
 		if (ifs->current_ssid == NULL || ifs->assoc_freq == 0)
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index eed1053..8cc813c 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -271,6 +271,19 @@
 
 
 /**
+ * struct wpa_radio - Internal data for per-radio information
+ *
+ * This structure is used to share data about configured interfaces
+ * (struct wpa_supplicant) that share the same physical radio, e.g., to allow
+ * better coordination of offchannel operations.
+ */
+struct wpa_radio {
+	char name[16]; /* from driver_ops get_radio_name() or empty if not
+			* available */
+	struct dl_list ifaces; /* struct wpa_supplicant::radio_list entries */
+};
+
+/**
  * offchannel_send_action_result - Result of offchannel send Action frame
  */
 enum offchannel_send_action_result {
@@ -307,6 +320,8 @@
  */
 struct wpa_supplicant {
 	struct wpa_global *global;
+	struct wpa_radio *radio; /* shared radio context */
+	struct dl_list radio_list; /* list head: struct wpa_radio::ifaces */
 	struct wpa_supplicant *parent;
 	struct wpa_supplicant *next;
 	struct l2_packet_data *l2;
@@ -463,7 +478,7 @@
 		 * to be run.
 		 */
 		MANUAL_SCAN_REQ
-	} scan_req;
+	} scan_req, last_scan_req;
 	struct os_time scan_trigger_time;
 	int scan_runs; /* number of scan runs since WPS was started */
 	int *next_scan_freqs;
@@ -772,6 +787,9 @@
 				    struct wpa_ssid *ssid);
 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
 				   struct wpa_ssid *ssid);
+int wpas_set_pkcs11_engine_and_module_path(struct wpa_supplicant *wpa_s,
+					   const char *pkcs11_engine_path,
+					   const char *pkcs11_module_path);
 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s,
 			       int ap_scan);
 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,