mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-22 23:09:34 +01:00
d3cf79ed12
In the beacon loss test try to simulate a periodic communication problem because we don't support roaming if the AP goes away completely. 2 seconds seems to be enough to consistently trigger the beacon_loss event without triggering a disconnect by the linux kernel or hiding the AP from the roam scan. Also set the RSSI for that AP lower so that it is not reselected by iwd.
257 lines
8.8 KiB
Python
257 lines
8.8 KiB
Python
#! /usr/bin/python3
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import unittest
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import sys, os
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sys.path.append('../util')
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import iwd
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from iwd import IWD
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from iwd import PSKAgent
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from iwd import NetworkType
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from hwsim import Hwsim
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from hostapd import HostapdCLI
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from wiphy import wiphy_map
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import testutil
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class Test(unittest.TestCase):
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def test_roam_success(self):
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hwsim = Hwsim()
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rule0 = hwsim.rules.create()
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rule0.source = self.bss_radio[0].addresses[0]
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rule0.bidirectional = True
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rule1 = hwsim.rules.create()
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rule1.source = self.bss_radio[1].addresses[0]
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rule1.bidirectional = True
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wd = IWD()
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psk_agent = PSKAgent("EasilyGuessedPassword")
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wd.register_psk_agent(psk_agent)
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device = wd.list_devices()[0];
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# Check that iwd selects BSS 0 first
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rule0.signal = -2000
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rule1.signal = -2500
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condition = 'not obj.scanning'
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wd.wait_for_object_condition(device, condition)
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device.scan()
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condition = 'obj.scanning'
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wd.wait_for_object_condition(device, condition)
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condition = 'not obj.scanning'
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wd.wait_for_object_condition(device, condition)
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ordered_networks = device.get_ordered_networks()
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self.assertEqual(len(ordered_networks), 1)
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ordered_network = ordered_networks[0]
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self.assertEqual(ordered_network.name, "TestFT")
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self.assertEqual(ordered_network.type, NetworkType.psk)
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self.assertEqual(ordered_network.signal_strength, -2000)
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condition = 'not obj.connected'
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wd.wait_for_object_condition(ordered_network.network_object, condition)
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self.assertFalse(self.bss_hostapd[0].list_sta())
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self.assertFalse(self.bss_hostapd[1].list_sta())
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ordered_network.network_object.connect()
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condition = 'obj.connected'
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wd.wait_for_object_condition(ordered_network.network_object, condition)
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self.assertTrue(self.bss_hostapd[0].list_sta())
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self.assertFalse(self.bss_hostapd[1].list_sta())
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wd.unregister_psk_agent(psk_agent)
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testutil.test_iface_operstate(device.name)
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testutil.test_ifaces_connected(self.bss_hostapd[0].ifname, device.name)
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self.assertRaises(Exception, testutil.test_ifaces_connected,
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(self.bss_hostapd[1].ifname, device.name))
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# Check that iwd starts transition to BSS 1 in less than 10 seconds.
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# The 10 seconds is longer than needed to scan on just two channels
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# but short enough that a full scan on the 2.4 + 5.8 bands supported
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# by mac80211_hwsim will not finish. If this times out then, but
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# device_roam_trigger_cb has happened, it probably means that
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# Neighbor Reports are broken.
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rule0.signal = -8000
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condition = 'obj.state == DeviceState.roaming'
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wd.wait_for_object_condition(device, condition, 10)
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# Check that iwd is on BSS 1 once out of roaming state and doesn't
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# go through 'disconnected', 'autoconnect', 'connecting' in between
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condition = 'obj.state != DeviceState.roaming'
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wd.wait_for_object_condition(device, condition, 5)
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self.assertEqual(device.state, iwd.DeviceState.connected)
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self.assertTrue(self.bss_hostapd[1].list_sta())
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testutil.test_iface_operstate(device.name)
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testutil.test_ifaces_connected(self.bss_hostapd[1].ifname, device.name)
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self.assertRaises(Exception, testutil.test_ifaces_connected,
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(self.bss_hostapd[0].ifname, device.name))
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def test_roam_on_beacon_loss(self):
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hwsim = Hwsim()
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rule0 = hwsim.rules.create()
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rule0.source = self.bss_radio[0].addresses[0]
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rule0.bidirectional = True
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rule1 = hwsim.rules.create()
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rule1.source = self.bss_radio[1].addresses[0]
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rule1.bidirectional = True
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wd = IWD()
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psk_agent = PSKAgent("EasilyGuessedPassword")
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wd.register_psk_agent(psk_agent)
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device = wd.list_devices()[0];
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# Check that iwd selects BSS 0 first
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rule0.signal = -2000
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rule1.signal = -2500
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condition = 'not obj.scanning'
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wd.wait_for_object_condition(device, condition)
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device.scan()
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condition = 'obj.scanning'
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wd.wait_for_object_condition(device, condition)
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condition = 'not obj.scanning'
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wd.wait_for_object_condition(device, condition)
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ordered_networks = device.get_ordered_networks()
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self.assertEqual(len(ordered_networks), 1)
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ordered_network = ordered_networks[0]
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self.assertEqual(ordered_network.name, "TestFT")
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self.assertEqual(ordered_network.type, NetworkType.psk)
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self.assertEqual(ordered_network.signal_strength, -2000)
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condition = 'not obj.connected'
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wd.wait_for_object_condition(ordered_network.network_object, condition)
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self.assertFalse(self.bss_hostapd[0].list_sta())
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self.assertFalse(self.bss_hostapd[1].list_sta())
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ordered_network.network_object.connect()
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condition = 'obj.connected'
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wd.wait_for_object_condition(ordered_network.network_object, condition)
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self.assertTrue(self.bss_hostapd[0].list_sta())
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self.assertFalse(self.bss_hostapd[1].list_sta())
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wd.unregister_psk_agent(psk_agent)
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testutil.test_iface_operstate(device.name)
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testutil.test_ifaces_connected(self.bss_hostapd[0].ifname, device.name)
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self.assertRaises(Exception, testutil.test_ifaces_connected,
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(self.bss_hostapd[1].ifname, device.name))
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# Check that iwd starts transition to BSS 1 in less than 20 seconds
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# from a beacon loss event
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rule0.drop = True
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rule0.signal = -3000
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wd.wait(2)
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rule0.drop = False
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condition = 'obj.state == DeviceState.roaming'
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wd.wait_for_object_condition(device, condition, 20)
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# Check that iwd is on BSS 1 once out of roaming state and doesn't
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# go through 'disconnected', 'autoconnect', 'connecting' in between
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condition = 'obj.state != DeviceState.roaming'
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wd.wait_for_object_condition(device, condition, 5)
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self.assertEqual(device.state, iwd.DeviceState.connected)
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self.assertTrue(self.bss_hostapd[1].list_sta())
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testutil.test_iface_operstate(device.name)
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testutil.test_ifaces_connected(self.bss_hostapd[1].ifname, device.name)
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self.assertRaises(Exception, testutil.test_ifaces_connected,
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(self.bss_hostapd[0].ifname, device.name))
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def tearDown(self):
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os.system('ifconfig "' + self.bss_hostapd[0].ifname + '" down')
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os.system('ifconfig "' + self.bss_hostapd[1].ifname + '" down')
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os.system('ifconfig "' + self.bss_hostapd[0].ifname + '" up')
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os.system('ifconfig "' + self.bss_hostapd[1].ifname + '" up')
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hwsim = Hwsim()
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wd = IWD()
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device = wd.list_devices()[0]
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try:
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device.disconnect()
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except:
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pass
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condition = 'obj.state == DeviceState.disconnected'
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wd.wait_for_object_condition(device, condition)
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for rule in list(hwsim.rules.keys()):
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del hwsim.rules[rule]
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@classmethod
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def setUpClass(cls):
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hwsim = Hwsim()
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cls.bss_hostapd = [None, None]
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cls.bss_radio = [None, None]
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for wname in wiphy_map:
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wiphy = wiphy_map[wname]
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intf = list(wiphy.values())[0]
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if intf.config and '1' in intf.config:
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bss_idx = 0
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elif intf.config and '2' in intf.config:
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bss_idx = 1
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else:
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continue
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for path in hwsim.radios:
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radio = hwsim.radios[path]
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if radio.name == wname:
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break
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cls.bss_hostapd[bss_idx] = HostapdCLI(intf)
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cls.bss_radio[bss_idx] = radio
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# Set interface addresses to those expected by hostapd config files
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os.system('ifconfig "' + cls.bss_hostapd[0].ifname +
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'" down hw ether 12:00:00:00:00:01 up')
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os.system('ifconfig "' + cls.bss_hostapd[1].ifname +
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'" down hw ether 12:00:00:00:00:02 up')
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cls.bss_hostapd[0].reload()
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cls.bss_hostapd[1].reload()
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# Fill in the neighbor AP tables in both BSSes. By default each
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# instance knows only about current BSS, even inside one hostapd
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# process.
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# FT still works without the neighbor AP table but neighbor reports
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# have to be disabled in the .conf files
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cls.bss_hostapd[0].set_neighbor('12:00:00:00:00:02', 'TestFT',
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'1200000000028f0000005102060603000000')
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cls.bss_hostapd[1].set_neighbor('12:00:00:00:00:01', 'TestFT',
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'1200000000018f0000005101060603000000')
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@classmethod
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def tearDownClass(cls):
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IWD.clear_storage()
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if __name__ == '__main__':
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unittest.main(exit=True)
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