Bluetooth: SSP: Improve BR SC only mode (69d415c9) · Commits · Wenxi XU / zephyr

subsys/bluetooth/host/classic/ssp.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -447,6 +447,23 @@ void bt_hci_link_key_notify(struct net_buf *buf)

		LOG_DBG("%s, link type 0x%02x", bt_addr_str(&evt->bdaddr), evt->key_type);

		if (IS_ENABLED(CONFIG_BT_SMP_SC_ONLY) && (evt->key_type != BT_LK_AUTH_COMBINATION_P256)) {
		/*
		* When in Secure Connections Only mode, all services
		* (except those allowed to have Security Mode 4, Level 0)
		* available on the BR/EDR physical transport require Security
		* Mode 4, Level 4.
		* Link key type should be P-256 based Secure Simple Pairing
		* and Secure Authentication.
		*/
		LOG_WRN("For SC only mode, link key type should be %d",
		BT_LK_AUTH_COMBINATION_P256);
		ssp_pairing_complete(conn, bt_security_err_get(BT_HCI_ERR_AUTH_FAIL));
		bt_conn_disconnect(conn, BT_HCI_ERR_AUTH_FAIL);
		bt_conn_unref(conn);
		return;
		}

		if (!conn->br.link_key) {
		conn->br.link_key = bt_keys_get_link_key(&evt->bdaddr);
		}