| # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.common_lib.cros.network import ping_runner |
| from autotest_lib.client.common_lib.cros.network import xmlrpc_datatypes |
| from autotest_lib.client.common_lib.cros.network import xmlrpc_security_types |
| from autotest_lib.server.cros.network import hostap_config |
| from autotest_lib.server.cros.network import wifi_cell_test_base |
| |
| |
| class network_WiFi_PTK(wifi_cell_test_base.WiFiCellTestBase): |
| """Test that pairwise temporal key rotations work as expected.""" |
| version = 1 |
| |
| # These settings combine to give us around 75 seconds of ping time, |
| # which should be around 15 rekeys. |
| PING_COUNT = 150 |
| PING_INTERVAL = 0.5 |
| REKEY_PERIOD = 5 |
| PING_LOSS_THRESHOLD=20 |
| |
| def run_once(self): |
| """Test body.""" |
| wpa_config = xmlrpc_security_types.WPAConfig( |
| psk='chromeos', |
| wpa_mode=xmlrpc_security_types.WPAConfig.MODE_MIXED_WPA, |
| wpa_ciphers=[xmlrpc_security_types.WPAConfig.CIPHER_TKIP, |
| xmlrpc_security_types.WPAConfig.CIPHER_CCMP], |
| wpa2_ciphers=[xmlrpc_security_types.WPAConfig.CIPHER_CCMP], |
| wpa_ptk_rekey_period=self.REKEY_PERIOD) |
| ap_config = hostap_config.HostapConfig( |
| frequency=2412, |
| mode=hostap_config.HostapConfig.MODE_11N_PURE, |
| security_config=wpa_config) |
| # TODO(wiley) This is just until we find the source of these |
| # test failures. |
| self.context.capture_host.start_capture(ap_config.frequency) |
| self.context.configure(ap_config) |
| assoc_params = xmlrpc_datatypes.AssociationParameters( |
| ssid=self.context.router.get_ssid(), |
| security_config=wpa_config) |
| self.context.assert_connect_wifi(assoc_params) |
| ping_config = ping_runner.PingConfig(self.context.get_wifi_addr(), |
| count=self.PING_COUNT, |
| interval=self.PING_INTERVAL, |
| ignore_result=True) |
| logging.info('Pinging DUT for %d seconds and rekeying ' |
| 'every %d seconds.', |
| self.PING_COUNT * self.PING_INTERVAL, |
| self.REKEY_PERIOD) |
| ping_result = self.context.client.ping(ping_config=ping_config) |
| logging.info('Ping loss percentage: %d.', ping_result.loss) |
| self.output_perf_value(description='Network_wifi_PTK_PingLoss', |
| value=ping_result.loss, units='percent', higher_is_better=False) |
| if ping_result.loss > self.PING_LOSS_THRESHOLD: |
| raise error.TestNAError('Lost ping packets %r percentage.' % |
| ping_result.loss) |
| self.context.client.shill.disconnect(assoc_params.ssid) |
| self.context.router.deconfig() |
| self.context.capture_host.stop_capture() |
