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https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-10-04 02:18:49 +02:00
f902c7019d
The scan ranking logic was previously changed to be based off a theoretical calculated data rate rather than signal strength. For HT/VHT networks there are many data points that can be used for this calculation, but non HT/VHT networks are estimated based on a simple table mapping signal strengths to data rates. This table starts at a signal strength of -65 dBm and decreases from there, meaning any signal strengths greater than -65 dBm will end up getting the same ranking. This poses a problem for 3/4 blacklisting tests as they set signal strengths ranging from -20 to -40 dBm. IWD will then autoconnect to whatever network popped up first, which may not be the expected network. To fix this the signal strengths were changed to much lower values which ensures IWD picks the expected network.
150 lines
4.4 KiB
Python
150 lines
4.4 KiB
Python
#!/usr/bin/python3
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import unittest
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import sys
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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 hostapd import HostapdCLI
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from hwsim import Hwsim
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import time
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class Test(unittest.TestCase):
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def test_connection_success(self):
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hwsim = Hwsim()
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bss_hostapd = [ HostapdCLI(config='ssid1.conf'),
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HostapdCLI(config='ssid2.conf'),
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HostapdCLI(config='ssid3.conf') ]
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bss_radio = [ hwsim.get_radio('rad0'),
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hwsim.get_radio('rad1'),
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hwsim.get_radio('rad2') ]
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rule0 = hwsim.rules.create()
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rule0.source = bss_radio[0].addresses[0]
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rule0.bidirectional = True
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rule0.signal = -2000
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rule1 = hwsim.rules.create()
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rule1.source = bss_radio[1].addresses[0]
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rule1.bidirectional = True
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rule1.signal = -7000
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rule2 = hwsim.rules.create()
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rule2.source = bss_radio[2].addresses[0]
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rule2.bidirectional = True
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rule2.signal = -8000
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wd = IWD(True)
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psk_agent = PSKAgent("secret123")
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wd.register_psk_agent(psk_agent)
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devices = wd.list_devices(2)
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device = devices[0]
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devices[1].disconnect()
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ordered_network = device.get_ordered_network("TestBlacklist", scan_if_needed=True)
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self.assertEqual(ordered_network.type, NetworkType.psk)
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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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rule0.drop = True
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ordered_network.network_object.connect(wait=False)
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# Have AP1 drop all packets, should result in a connection timeout
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rule0.drop = True
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# Note the time so later we don't sleep any longer than required
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start = time.time()
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condition = 'obj.state == DeviceState.connected'
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wd.wait_for_object_condition(device, condition)
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# IWD should have attempted to connect to bss_hostapd[0], since its
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# signal strength was highest. But since we dropped all packets this
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# connect should fail, and the BSS should be blacklisted. Then we
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# should automatically try the next BSS in the list, which is
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# bss_hostapd[1]
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self.assertNotIn(device.address, bss_hostapd[0].list_sta())
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self.assertIn(device.address, bss_hostapd[1].list_sta())
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rule0.drop = False
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# Next try autoconnecting to a network with a blacklisted BSS. Since an
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# explicit disconnect call would disable autoconnect we reset
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# hostapd which will disconnect IWD.
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bss_hostapd[1].reload()
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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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# Now we wait... AutoConnect should take over
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condition = 'obj.state == DeviceState.connecting'
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wd.wait_for_object_condition(device, condition)
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condition = 'obj.state == DeviceState.connected'
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wd.wait_for_object_condition(device, condition)
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# Same as before, make sure we didn't connect to the blacklisted AP.
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self.assertNotIn(device.address, bss_hostapd[0].list_sta())
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self.assertIn(device.address, bss_hostapd[1].list_sta())
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# Wait for the blacklist to expire (10 seconds)
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elapsed = time.time() - start
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if elapsed < 15:
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wd.wait(15 - elapsed)
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device.disconnect()
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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 = 'not obj.scanning'
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wd.wait_for_object_condition(device, condition)
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ordered_network = device.get_ordered_network("TestBlacklist")
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self.assertEqual(ordered_network.type, NetworkType.psk)
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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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ordered_network.network_object.connect()
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condition = 'obj.state == DeviceState.connected'
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wd.wait_for_object_condition(device, condition)
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self.assertIn(device.address, bss_hostapd[0].list_sta())
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wd.unregister_psk_agent(psk_agent)
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rule0.remove()
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rule1.remove()
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rule2.remove()
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@classmethod
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def setUpClass(cls):
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IWD.copy_to_storage('main.conf')
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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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