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iwd/autotests/testBSSBlacklist/bad_pass_test.py
James Prestwood f902c7019d auto-t: fix blacklist test ranking
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.
2021-07-28 09:32:42 -05:00

91 lines
2.4 KiB
Python

#!/usr/bin/python3
import unittest
import sys
sys.path.append('../util')
import iwd
from iwd import IWD
from iwd import PSKAgent
from iwd import NetworkType
from hostapd import HostapdCLI
from hwsim import Hwsim
class Test(unittest.TestCase):
def test_connection_success(self):
hwsim = Hwsim()
bss_hostapd = [ HostapdCLI(config='ssid1.conf'),
HostapdCLI(config='ssid2.conf'),
HostapdCLI(config='ssid3.conf') ]
bss_radio = [ hwsim.get_radio('rad0'),
hwsim.get_radio('rad1'),
hwsim.get_radio('rad2') ]
rule0 = hwsim.rules.create()
rule0.source = bss_radio[0].addresses[0]
rule0.bidirectional = True
rule0.signal = -2000
rule1 = hwsim.rules.create()
rule1.source = bss_radio[1].addresses[0]
rule1.bidirectional = True
rule1.signal = -7000
rule2 = hwsim.rules.create()
rule2.source = bss_radio[2].addresses[0]
rule2.bidirectional = True
rule2.signal = -8000
wd = IWD(True)
psk_agent = PSKAgent("wrong_password")
wd.register_psk_agent(psk_agent)
devices = wd.list_devices(1)
device = devices[0]
ordered_network = device.get_ordered_network("TestBlacklist", scan_if_needed=True)
self.assertEqual(ordered_network.type, NetworkType.psk)
condition = 'not obj.connected'
wd.wait_for_object_condition(ordered_network.network_object, condition)
with self.assertRaises(iwd.FailedEx):
ordered_network.network_object.connect()
wd.unregister_psk_agent(psk_agent)
psk_agent = PSKAgent("secret123")
wd.register_psk_agent(psk_agent)
ordered_network.network_object.connect()
# We failed to connect bss_hostapd[0], but with a bad password. Verify
# that this did not trigger a blacklist and that we did reconnect
# successfully to bss_hostapd[0]
self.assertIn(device.address, bss_hostapd[0].list_sta())
condition = 'obj.state == DeviceState.connected'
wd.wait_for_object_condition(device, condition)
wd.unregister_psk_agent(psk_agent)
rule0.remove()
rule1.remove()
rule2.remove()
@classmethod
def setUpClass(cls):
pass
@classmethod
def tearDownClass(cls):
IWD.clear_storage()
if __name__ == '__main__':
unittest.main(exit=True)