| # 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.cros.network import hostap_config |
| from autotest_lib.server.cros.network import wifi_cell_test_base |
| |
| |
| class network_WiFi_RxFrag(wifi_cell_test_base.WiFiCellTestBase): |
| """Test that the DUT can reassemble packet fragments.""" |
| version = 1 |
| |
| |
| def run_once(self): |
| """Test body. |
| |
| When fragthreshold is set, packets larger than the threshold are |
| broken up by the AP and sent in fragments. The DUT needs to reassemble |
| these fragments to reconstruct the original packets before processing |
| them. |
| |
| """ |
| |
| # Whirlwind routers don't support fragmentation, and older builds |
| # (up to 7849.0.2016_01_20_2103) don't know that they don't, so check |
| # here using board name. |
| if self.context.router.board == "whirlwind": |
| raise error.TestNAError('Whirlwind AP does not support frag threshold') |
| |
| configuration = hostap_config.HostapConfig( |
| frequency=2437, |
| mode=hostap_config.HostapConfig.MODE_11G, |
| frag_threshold=256) |
| self.context.configure(configuration) |
| self.context.capture_host.start_capture(configuration.frequency) |
| assoc_params = xmlrpc_datatypes.AssociationParameters() |
| assoc_params.ssid = self.context.router.get_ssid() |
| self.context.assert_connect_wifi(assoc_params) |
| build_config = lambda size: ping_runner.PingConfig( |
| self.context.client.wifi_ip, size=size) |
| self.context.assert_ping_from_server(ping_config=build_config(256)) |
| self.context.assert_ping_from_server(ping_config=build_config(512)) |
| self.context.assert_ping_from_server(ping_config=build_config(1024)) |
| self.context.assert_ping_from_server(ping_config=build_config(1500)) |
| self.context.client.shill.disconnect(assoc_params.ssid) |
| self.context.router.deconfig() |
| self.context.capture_host.stop_capture() |
