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hostapd/tests/hwsim/test_bgscan.py
Jouni Malinen a3eda98c22 tests: Skip background scans in beacon loss tests 
bgscan_learn_beacon_loss was failing quite frequently and it looks like
the background scans were related to those failures. Since those scans
are not really relevant to testing beacon loss, get rid of them in these
test cases to avoid incorrect failures.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2020-03-27 21:05:44 +02:00

304 lines
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# bgscan tests
# Copyright (c) 2014-2017, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import time
import logging
logger = logging.getLogger()
import os
import hostapd
from utils import alloc_fail, fail_test
def test_bgscan_simple(dev, apdev):
"""bgscan_simple"""
hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
hostapd.add_ap(apdev[1], {"ssid": "bgscan"})
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-20:2")
dev[1].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-45:2")
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-45")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:0:0")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
ev = dev[0].wait_event(["CTRL-EVENT-SIGNAL-CHANGE"], timeout=10)
if ev is None:
raise Exception("dev0 did not indicate signal change event")
if "above=0" not in ev:
raise Exception("Unexpected signal change event contents from dev0: " + ev)
ev = dev[1].wait_event(["CTRL-EVENT-SIGNAL-CHANGE"], timeout=10)
if ev is None:
raise Exception("dev1 did not indicate signal change event")
if "above=1" not in ev:
raise Exception("Unexpected signal change event contents from dev1: " + ev)
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=3)
if ev is None:
raise Exception("dev0 did not start a scan")
ev = dev[1].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=3)
if ev is None:
raise Exception("dev1 did not start a scan")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("dev0 did not complete a scan")
ev = dev[1].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("dev1 did not complete a scan")
def test_bgscan_simple_beacon_loss(dev, apdev):
"""bgscan_simple and beacon loss"""
params = hostapd.wpa2_params(ssid="bgscan", passphrase="12345678")
params["wpa_key_mgmt"] = "WPA-PSK-SHA256"
params["ieee80211w"] = "2"
hapd = hostapd.add_ap(apdev[0], params)
dev[0].set("disable_sa_query", "1")
dev[0].connect("bgscan", ieee80211w="2", key_mgmt="WPA-PSK-SHA256",
psk="12345678", scan_freq="2412",
bgscan="simple:100:-20:200")
hapd.set("ext_mgmt_frame_handling", "1")
if "OK" not in hapd.request("STOP_AP"):
raise Exception("Failed to stop AP")
hapd.disable()
hapd.set("ssid", "foo")
hapd.set("beacon_int", "10000")
hapd.enable()
ev = dev[0].wait_event(["CTRL-EVENT-BEACON-LOSS"], timeout=10)
if ev is None:
raise Exception("Beacon loss not reported")
def test_bgscan_simple_scan_failure(dev, apdev):
"""bgscan_simple and scan failure"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-20:2")
with alloc_fail(dev[0], 1,
"wpa_supplicant_trigger_scan;bgscan_simple_timeout"):
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=10)
if ev is None:
raise Exception("No scan failure reported")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 10)
if ev is None:
raise Exception("Scanning not continued after failure")
def test_bgscan_simple_scanning(dev, apdev):
"""bgscan_simple and scanning behavior"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-20:2")
# Go through seven bgscan_simple_timeout calls for code coverage. This falls
# back from short to long scan interval and then reduces short_scan_count
# back to zero.
for i in range(7):
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 10)
if ev is None:
raise Exception("Scanning not continued")
def test_bgscan_simple_same_scan_int(dev, apdev):
"""bgscan_simple and same short/long scan interval"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-20:1")
for i in range(2):
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 10)
if ev is None:
raise Exception("Scanning not continued")
def test_bgscan_simple_oom(dev, apdev):
"""bgscan_simple OOM"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
with alloc_fail(dev[0], 1, "bgscan_simple_init"):
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-20:2")
def test_bgscan_simple_driver_conf_failure(dev, apdev):
"""bgscan_simple driver configuration failure"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
with fail_test(dev[0], 1, "bgscan_simple_init"):
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="simple:1:-20:2")
def test_bgscan_learn(dev, apdev):
"""bgscan_learn"""
hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
hostapd.add_ap(apdev[1], {"ssid": "bgscan"})
try:
os.remove("/tmp/test_bgscan_learn.bgscan")
except:
pass
try:
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1:-20:2")
id = dev[1].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1:-45:2:/tmp/test_bgscan_learn.bgscan")
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1:-45")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:0:0")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
dev[2].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1")
dev[2].request("REMOVE_NETWORK all")
dev[2].wait_disconnected()
ev = dev[0].wait_event(["CTRL-EVENT-SIGNAL-CHANGE"], timeout=10)
if ev is None:
raise Exception("dev0 did not indicate signal change event")
if "above=0" not in ev:
raise Exception("Unexpected signal change event contents from dev0: " + ev)
ev = dev[1].wait_event(["CTRL-EVENT-SIGNAL-CHANGE"], timeout=10)
if ev is None:
raise Exception("dev1 did not indicate signal change event")
if "above=1" not in ev:
raise Exception("Unexpected signal change event contents from dev1: " + ev)
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=3)
if ev is None:
raise Exception("dev0 did not start a scan")
ev = dev[1].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=3)
if ev is None:
raise Exception("dev1 did not start a scan")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("dev0 did not complete a scan")
ev = dev[1].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("dev1 did not complete a scan")
dev[0].request("DISCONNECT")
dev[1].request("DISCONNECT")
dev[0].request("REMOVE_NETWORK all")
with open("/tmp/test_bgscan_learn.bgscan", "r") as f:
lines = f.read().splitlines()
if lines[0] != "wpa_supplicant-bgscan-learn":
raise Exception("Unexpected bgscan header line")
if 'BSS 02:00:00:00:03:00 2412' not in lines:
raise Exception("Missing BSS1")
if 'BSS 02:00:00:00:04:00 2412' not in lines:
raise Exception("Missing BSS2")
if 'NEIGHBOR 02:00:00:00:03:00 02:00:00:00:04:00' not in lines:
raise Exception("Missing BSS1->BSS2 neighbor entry")
if 'NEIGHBOR 02:00:00:00:04:00 02:00:00:00:03:00' not in lines:
raise Exception("Missing BSS2->BSS1 neighbor entry")
dev[1].set_network(id, "scan_freq", "")
dev[1].connect_network(id)
ev = dev[1].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=10)
if ev is None:
raise Exception("dev1 did not start a scan")
ev = dev[1].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 10)
if ev is None:
raise Exception("dev1 did not complete a scan")
dev[1].request("REMOVE_NETWORK all")
finally:
try:
os.remove("/tmp/test_bgscan_learn.bgscan")
except:
pass
def test_bgscan_learn_beacon_loss(dev, apdev):
"""bgscan_simple and beacon loss"""
params = hostapd.wpa2_params(ssid="bgscan", passphrase="12345678")
params["wpa_key_mgmt"] = "WPA-PSK-SHA256"
params["ieee80211w"] = "2"
hapd = hostapd.add_ap(apdev[0], params)
dev[0].set("disable_sa_query", "1")
dev[0].connect("bgscan", ieee80211w="2", key_mgmt="WPA-PSK-SHA256",
psk="12345678", scan_freq="2412", bgscan="learn:100:-20:200")
hapd.set("ext_mgmt_frame_handling", "1")
if "OK" not in hapd.request("STOP_AP"):
raise Exception("Failed to stop AP")
hapd.disable()
hapd.set("ssid", "foo")
hapd.set("beacon_int", "10000")
hapd.enable()
ev = dev[0].wait_event(["CTRL-EVENT-BEACON-LOSS"], timeout=10)
if ev is None:
raise Exception("Beacon loss not reported")
def test_bgscan_learn_scan_failure(dev, apdev):
"""bgscan_learn and scan failure"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1:-20:2")
with alloc_fail(dev[0], 1,
"wpa_supplicant_trigger_scan;bgscan_learn_timeout"):
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=10)
if ev is None:
raise Exception("No scan failure reported")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 10)
if ev is None:
raise Exception("Scanning not continued after failure")
def test_bgscan_learn_oom(dev, apdev):
"""bgscan_learn OOM"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
with alloc_fail(dev[0], 1, "bgscan_learn_init"):
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1:-20:2")
def test_bgscan_learn_driver_conf_failure(dev, apdev):
"""bgscan_learn driver configuration failure"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
with fail_test(dev[0], 1, "bgscan_learn_init"):
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="learn:1:-20:2")
def test_bgscan_unknown_module(dev, apdev):
"""bgscan init failing due to unknown module"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "bgscan"})
dev[0].connect("bgscan", key_mgmt="NONE", scan_freq="2412",
bgscan="unknown:-20:2")
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