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iwd
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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.
This commit is contained in:
James Prestwood 2022-08-09 16:04:28 -07:00 committed by Denis Kenzior
parent 1e1a6d6754
commit fb76a4ef13
1 changed files with 44 additions and 2 deletions
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46
autotests/testPSK-roam/connection_test.py
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@ -13,7 +13,7 @@ from hostapd import HostapdCLI
import testutil
class Test(unittest.TestCase):
def validate_connection(self, wd, over_ds=False):
def validate_connection(self, wd, over_ds=False, pkt_loss=False):
device = wd.list_devices(1)[0]
ordered_network = device.get_ordered_network('TestFT', full_scan=True)
@ -41,11 +41,24 @@ class Test(unittest.TestCase):
if over_ds:
self.rule0.enabled = True
device.roam(self.bss_hostapd[1].bssid)
if pkt_loss:
# Drop all data frames
self.rule1.enabled = True
# Set the current BSS signal lower so we have roam candidates
self.rule2.enabled = True
# Send 100 packets (to be dropped), should trigger beacon loss
testutil.tx_packets(device.name, self.bss_hostapd[0].ifname, 100)
device.wait_for_event('packet-loss-roam', timeout=30)
else:
device.roam(self.bss_hostapd[1].bssid)
condition = 'obj.state == DeviceState.roaming'
wd.wait_for_object_condition(device, condition)
if pkt_loss:
self.rule1.enabled = False
self.rule2.enabled = False
# Check that iwd is on BSS 1 once out of roaming state and doesn't
# go through 'disconnected', 'autoconnect', 'connecting' in between
from_condition = 'obj.state == DeviceState.roaming'
@ -132,6 +145,23 @@ class Test(unittest.TestCase):
self.validate_connection(wd)
def test_roam_packet_loss(self):
wd = IWD(True)
self.bss_hostapd[0].set_value('wpa_key_mgmt', 'FT-PSK')
self.bss_hostapd[0].set_value('ft_over_ds', '0')
self.bss_hostapd[0].set_value('ocv', '1')
self.bss_hostapd[0].reload()
self.bss_hostapd[0].wait_for_event("AP-ENABLED")
self.bss_hostapd[1].set_value('wpa_key_mgmt', 'FT-PSK')
self.bss_hostapd[1].set_value('ft_over_ds', '0')
self.bss_hostapd[0].set_value('ocv', '1')
self.bss_hostapd[1].reload()
self.bss_hostapd[1].wait_for_event("AP-ENABLED")
self.validate_connection(wd, pkt_loss=True)
def tearDown(self):
os.system('ip link set "' + self.bss_hostapd[0].ifname + '" down')
os.system('ip link set "' + self.bss_hostapd[1].ifname + '" down')
@ -139,6 +169,8 @@ class Test(unittest.TestCase):
os.system('ip link set "' + self.bss_hostapd[1].ifname + '" up')
self.rule0.enabled = False
self.rule1.enabled = False
self.rule2.enabled = False
@classmethod
def setUpClass(cls):
@ -148,6 +180,7 @@ class Test(unittest.TestCase):
cls.bss_hostapd = [ HostapdCLI(config='ft-psk-ccmp-1.conf'),
HostapdCLI(config='ft-psk-ccmp-2.conf') ]
rad0 = hwsim.get_radio('rad0')
rad2 = hwsim.get_radio('rad2')
cls.rule0 = hwsim.rules.create()
@ -157,6 +190,15 @@ class Test(unittest.TestCase):
cls.rule0.prefix = 'b0'
cls.rule0.drop = True
cls.rule1 = hwsim.rules.create()
cls.rule1.source = rad2.addresses[0]
cls.rule1.prefix = '08'
cls.rule1.drop = True
cls.rule2 = hwsim.rules.create()
cls.rule2.source = rad0.addresses[0]
cls.rule2.signal = -4000
# Set interface addresses to those expected by hostapd config files
os.system('ip link set dev "' + cls.bss_hostapd[0].ifname + '" down')
os.system('ip link set dev "' + cls.bss_hostapd[0].ifname + '" addr 12:00:00:00:00:01 up')