auto-t: add packet loss test to testPSK-roam
A new test which blocks all data frames once connected, then tries to send 100 packets. This should result in the kernel sending a packet loss event to userspace, which IWD should react to and roam.
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@ -13,7 +13,7 @@ from hostapd import HostapdCLI
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import testutil
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import testutil
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class Test(unittest.TestCase):
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class Test(unittest.TestCase):
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def validate_connection(self, wd, over_ds=False):
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def validate_connection(self, wd, over_ds=False, pkt_loss=False):
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device = wd.list_devices(1)[0]
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device = wd.list_devices(1)[0]
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ordered_network = device.get_ordered_network('TestFT', full_scan=True)
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ordered_network = device.get_ordered_network('TestFT', full_scan=True)
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@ -41,11 +41,24 @@ class Test(unittest.TestCase):
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if over_ds:
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if over_ds:
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self.rule0.enabled = True
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self.rule0.enabled = True
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device.roam(self.bss_hostapd[1].bssid)
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if pkt_loss:
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# Drop all data frames
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self.rule1.enabled = True
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# Set the current BSS signal lower so we have roam candidates
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self.rule2.enabled = True
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# Send 100 packets (to be dropped), should trigger beacon loss
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testutil.tx_packets(device.name, self.bss_hostapd[0].ifname, 100)
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device.wait_for_event('packet-loss-roam', timeout=30)
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else:
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device.roam(self.bss_hostapd[1].bssid)
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condition = 'obj.state == DeviceState.roaming'
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condition = 'obj.state == DeviceState.roaming'
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wd.wait_for_object_condition(device, condition)
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wd.wait_for_object_condition(device, condition)
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if pkt_loss:
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self.rule1.enabled = False
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self.rule2.enabled = False
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# Check that iwd is on BSS 1 once out of roaming state and doesn't
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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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# go through 'disconnected', 'autoconnect', 'connecting' in between
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from_condition = 'obj.state == DeviceState.roaming'
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from_condition = 'obj.state == DeviceState.roaming'
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@ -132,6 +145,23 @@ class Test(unittest.TestCase):
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self.validate_connection(wd)
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self.validate_connection(wd)
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def test_roam_packet_loss(self):
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wd = IWD(True)
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self.bss_hostapd[0].set_value('wpa_key_mgmt', 'FT-PSK')
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self.bss_hostapd[0].set_value('ft_over_ds', '0')
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self.bss_hostapd[0].set_value('ocv', '1')
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self.bss_hostapd[0].reload()
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self.bss_hostapd[0].wait_for_event("AP-ENABLED")
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self.bss_hostapd[1].set_value('wpa_key_mgmt', 'FT-PSK')
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self.bss_hostapd[1].set_value('ft_over_ds', '0')
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self.bss_hostapd[0].set_value('ocv', '1')
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self.bss_hostapd[1].reload()
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self.bss_hostapd[1].wait_for_event("AP-ENABLED")
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self.validate_connection(wd, pkt_loss=True)
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def tearDown(self):
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def tearDown(self):
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os.system('ip link set "' + self.bss_hostapd[0].ifname + '" down')
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os.system('ip link set "' + self.bss_hostapd[0].ifname + '" down')
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os.system('ip link set "' + self.bss_hostapd[1].ifname + '" down')
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os.system('ip link set "' + self.bss_hostapd[1].ifname + '" down')
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@ -139,6 +169,8 @@ class Test(unittest.TestCase):
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os.system('ip link set "' + self.bss_hostapd[1].ifname + '" up')
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os.system('ip link set "' + self.bss_hostapd[1].ifname + '" up')
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self.rule0.enabled = False
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self.rule0.enabled = False
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self.rule1.enabled = False
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self.rule2.enabled = False
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@classmethod
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@classmethod
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def setUpClass(cls):
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def setUpClass(cls):
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@ -148,6 +180,7 @@ class Test(unittest.TestCase):
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cls.bss_hostapd = [ HostapdCLI(config='ft-psk-ccmp-1.conf'),
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cls.bss_hostapd = [ HostapdCLI(config='ft-psk-ccmp-1.conf'),
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HostapdCLI(config='ft-psk-ccmp-2.conf') ]
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HostapdCLI(config='ft-psk-ccmp-2.conf') ]
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rad0 = hwsim.get_radio('rad0')
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rad2 = hwsim.get_radio('rad2')
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rad2 = hwsim.get_radio('rad2')
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cls.rule0 = hwsim.rules.create()
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cls.rule0 = hwsim.rules.create()
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@ -157,6 +190,15 @@ class Test(unittest.TestCase):
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cls.rule0.prefix = 'b0'
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cls.rule0.prefix = 'b0'
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cls.rule0.drop = True
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cls.rule0.drop = True
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cls.rule1 = hwsim.rules.create()
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cls.rule1.source = rad2.addresses[0]
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cls.rule1.prefix = '08'
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cls.rule1.drop = True
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cls.rule2 = hwsim.rules.create()
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cls.rule2.source = rad0.addresses[0]
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cls.rule2.signal = -4000
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# Set interface addresses to those expected by hostapd config files
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# Set interface addresses to those expected by hostapd config files
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os.system('ip link set dev "' + cls.bss_hostapd[0].ifname + '" down')
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os.system('ip link set dev "' + cls.bss_hostapd[0].ifname + '" down')
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os.system('ip link set dev "' + cls.bss_hostapd[0].ifname + '" addr 12:00:00:00:00:01 up')
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os.system('ip link set dev "' + cls.bss_hostapd[0].ifname + '" addr 12:00:00:00:00:01 up')
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