| # 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. |
| |
| 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.server import site_linux_system |
| from autotest_lib.server.cros.network import wifi_cell_test_base |
| |
| |
| class network_WiFi_CSA(wifi_cell_test_base.WiFiCellTestBase): |
| """Test that the client vacates the channel after notification |
| from the AP that it should switch channels. Note that not all clients |
| support CSA (Channel Switch Announcement), but they generally should at |
| least try to disconnect from the AP.""" |
| version = 1 |
| |
| |
| def parse_additional_arguments(self, commandline_args, additional_params): |
| """Hook into super class to take control files parameters. |
| |
| @param commandline_args dict of parsed parameters from the autotest. |
| @param additional_params list of dicts describing router configs. |
| |
| """ |
| self._configurations = additional_params |
| |
| |
| def run_once(self): |
| """Sets up a router, connects to it, then tests a channel switch.""" |
| for router_conf, alternate_channel in self._configurations: |
| self.context.router.require_capabilities( |
| [site_linux_system.LinuxSystem. |
| CAPABILITY_SEND_MANAGEMENT_FRAME]) |
| self.context.configure(router_conf) |
| assoc_params = xmlrpc_datatypes.AssociationParameters() |
| assoc_params.ssid = self.context.router.get_ssid() |
| self.context.assert_connect_wifi(assoc_params) |
| ping_config = ping_runner.PingConfig( |
| self.context.get_wifi_addr(ap_num=0)) |
| client_mac = self.context.client.wifi_mac |
| for _ in range(10): |
| # Since the client might be in power-save, we are not |
| # guaranteed it will hear this message the first time around. |
| self.context.router.send_management_frame_on_ap( |
| 'channel_switch', alternate_channel) |
| |
| # Test to see if the router received a deauth message from |
| # the client. |
| if self.context.router.detect_client_deauth(client_mac): |
| break |
| |
| # Otherwise detect the client leaving indirectly by measuring |
| # client pings. This should fail at some point. |
| ping_config = ping_runner.PingConfig( |
| self.context.get_wifi_addr(ap_num=0), |
| count=3, ignore_status=True, |
| ignore_result=True) |
| result = self.context.client.ping(ping_config) |
| if result.loss > 60: |
| break |
| else: |
| raise error.TestFail('Client never lost connectivity') |
| self.context.client.shill.disconnect(assoc_params.ssid) |
| self.context.router.deconfig() |
