hostap/tests/hwsim/test_bgscan.py

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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:1:-20:2")
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:1:-20:2")
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")