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tests: Roam between two APs based on driver signal level override

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Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2020-01-02 20:31:30 +02:00
parent 6c57019376
commit 82e64f9b90
1 changed files with 59 additions and 1 deletions
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60
tests/hwsim/test_ap_roam.py
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@ -1,5 +1,5 @@
# Roaming tests # Roaming tests
# Copyright (c) 2013, Jouni Malinen <j@w1.fi> # Copyright (c) 2013-2019, Jouni Malinen <j@w1.fi>
# #
# This software may be distributed under the terms of the BSD license. # This software may be distributed under the terms of the BSD license.
# See README for more details. # See README for more details.
@ -242,3 +242,61 @@ def test_ap_roam_wpa2_psk_race(dev, apdev):
for i in range(3): for i in range(3):
time.sleep(0.8) time.sleep(0.8)
hwsim_utils.test_connectivity(dev[0], hapd0) hwsim_utils.test_connectivity(dev[0], hapd0)
def test_ap_roam_signal_level_override(dev, apdev):
"""Roam between two APs based on driver signal level override"""
hapd0 = hostapd.add_ap(apdev[0], {"ssid": "test-open"})
bssid0 = apdev[0]['bssid']
hapd1 = hostapd.add_ap(apdev[1], {"ssid": "test-open"})
bssid1 = apdev[1]['bssid']
dev[0].scan_for_bss(bssid0, freq=2412)
dev[0].scan_for_bss(bssid1, freq=2412)
dev[0].connect("test-open", key_mgmt="NONE")
bssid = dev[0].get_status_field('bssid')
if bssid == bssid0:
dst = bssid1
src = bssid0
else:
dst = bssid0
src = bssid1
dev[0].scan(freq=2412)
ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], 0.5)
if ev is not None:
raise Exception("Unexpected roam")
orig_res = dev[0].request("SIGNAL_POLL")
dev[0].set("driver_signal_override", src + " -1 -2 -3 -4 -5")
res = dev[0].request("SIGNAL_POLL").splitlines()
if "RSSI=-1" not in res or \
"AVG_RSSI=-2" not in res or \
"AVG_BEACON_RSSI=-3" not in res or \
"NOISE=-4" not in res:
raise Exception("SIGNAL_POLL override did not work: " + str(res))
dev[0].set("driver_signal_override", src)
new_res = dev[0].request("SIGNAL_POLL")
if orig_res != new_res:
raise Exception("SIGNAL_POLL restore did not work: " + new_res)
tests = [("-30 -30 -30 -95 -30", "-30 -30 -30 -95 -30"),
("-30 -30 -30 -95 -30", "-20 -20 -20 -95 -20"),
("-90 -90 -90 -95 -90", "-89 -89 -89 -95 -89"),
("-90 -90 -90 -95 -95", "-89 -89 -89 -95 -89")]
for src_override, dst_override in tests:
dev[0].set("driver_signal_override", src + " " + src_override)
dev[0].set("driver_signal_override", dst + " " + dst_override)
dev[0].scan(freq=2412)
ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], 0.1)
if ev is not None:
raise Exception("Unexpected roam")
dev[0].dump_monitor()
dev[0].set("driver_signal_override", src + " -90 -90 -90 -95 -90")
dev[0].set("driver_signal_override", dst + " -80 -80 -80 -95 -80")
dev[0].scan(freq=2412)
dev[0].wait_connected()
if dst != dev[0].get_status_field('bssid'):
raise Exception("Unexpected AP after roam")
dev[0].dump_monitor()