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fragattacks/tests/hwsim/test_ap_acs.py
Jouni Malinen a47f214e3f tests: Automatic channel selection failures 
Signed-off-by: Jouni Malinen <j@w1.fi>
2017-03-04 17:30:15 +02:00

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Python
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# Test cases for automatic channel selection with hostapd
# Copyright (c) 2013-2017, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import logging
logger = logging.getLogger()
import time
import hostapd
from utils import skip_with_fips, alloc_fail, fail_test
from test_ap_ht import clear_scan_cache
def force_prev_ap_on_24g(ap):
# For now, make sure the last operating channel was on 2.4 GHz band to get
# sufficient survey data from mac80211_hwsim.
hostapd.add_ap(ap, { "ssid": "open" })
time.sleep(0.1)
hostapd.remove_bss(ap)
def force_prev_ap_on_5g(ap):
# For now, make sure the last operating channel was on 5 GHz band to get
# sufficient survey data from mac80211_hwsim.
hostapd.add_ap(ap, { "ssid": "open", "hw_mode": "a",
"channel": "36", "country_code": "US" })
time.sleep(0.1)
hostapd.remove_bss(ap)
def wait_acs(hapd):
ev = hapd.wait_event(["ACS-STARTED", "ACS-COMPLETED", "ACS-FAILED",
"AP-ENABLED", "AP-DISABLED"], timeout=5)
if not ev:
raise Exception("ACS start timed out")
if "ACS-STARTED" not in ev:
raise Exception("Unexpected ACS event: " + ev)
state = hapd.get_status_field("state")
if state != "ACS":
raise Exception("Unexpected interface state")
ev = hapd.wait_event(["ACS-COMPLETED", "ACS-FAILED", "AP-ENABLED",
"AP-DISABLED"], timeout=20)
if not ev:
raise Exception("ACS timed out")
if "ACS-COMPLETED" not in ev:
raise Exception("Unexpected ACS event: " + ev)
ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=5)
if not ev:
raise Exception("AP setup timed out")
if "AP-ENABLED" not in ev:
raise Exception("Unexpected ACS event: " + ev)
state = hapd.get_status_field("state")
if state != "ENABLED":
raise Exception("Unexpected interface state")
def test_ap_acs(dev, apdev):
"""Automatic channel selection"""
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = '0'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 2400:
raise Exception("Unexpected frequency")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
def test_ap_acs_chanlist(dev, apdev):
"""Automatic channel selection with chanlist set"""
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = '0'
params['chanlist'] = '1 6 11'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 2400:
raise Exception("Unexpected frequency")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
def test_ap_multi_bss_acs(dev, apdev):
"""hostapd start with a multi-BSS configuration file using ACS"""
skip_with_fips(dev[0])
force_prev_ap_on_24g(apdev[0])
# start the actual test
hapd = hostapd.add_iface(apdev[0], 'multi-bss-acs.conf')
hapd.enable()
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 2400:
raise Exception("Unexpected frequency")
dev[0].connect("bss-1", key_mgmt="NONE", scan_freq=freq)
dev[1].connect("bss-2", psk="12345678", scan_freq=freq)
dev[2].connect("bss-3", psk="qwertyuiop", scan_freq=freq)
def test_ap_acs_40mhz(dev, apdev):
"""Automatic channel selection for 40 MHz channel"""
clear_scan_cache(apdev[0])
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = '0'
params['ht_capab'] = '[HT40+]'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 2400:
raise Exception("Unexpected frequency")
sec = hapd.get_status_field("secondary_channel")
if int(sec) == 0:
raise Exception("Secondary channel not set")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
def test_ap_acs_40mhz_minus(dev, apdev):
"""Automatic channel selection for HT40- channel"""
clear_scan_cache(apdev[0])
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = '0'
params['ht_capab'] = '[HT40-]'
params['acs_num_scans'] = '1'
params['chanlist'] = '1 11'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=10)
if not ev:
raise Exception("ACS start timed out")
# HT40- is not currently supported in hostapd ACS, so do not try to connect
# or verify that this operation succeeded.
def test_ap_acs_5ghz(dev, apdev):
"""Automatic channel selection on 5 GHz"""
try:
hapd = None
force_prev_ap_on_5g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['hw_mode'] = 'a'
params['channel'] = '0'
params['country_code'] = 'US'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 5000:
raise Exception("Unexpected frequency")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
def test_ap_acs_5ghz_40mhz(dev, apdev):
"""Automatic channel selection on 5 GHz for 40 MHz channel"""
try:
hapd = None
force_prev_ap_on_5g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['hw_mode'] = 'a'
params['channel'] = '0'
params['ht_capab'] = '[HT40+]'
params['country_code'] = 'US'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 5000:
raise Exception("Unexpected frequency")
sec = hapd.get_status_field("secondary_channel")
if int(sec) == 0:
raise Exception("Secondary channel not set")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
def test_ap_acs_vht(dev, apdev):
"""Automatic channel selection for VHT"""
try:
hapd = None
force_prev_ap_on_5g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['hw_mode'] = 'a'
params['channel'] = '0'
params['ht_capab'] = '[HT40+]'
params['country_code'] = 'US'
params['ieee80211ac'] = '1'
params['vht_oper_chwidth'] = '1'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 5000:
raise Exception("Unexpected frequency")
sec = hapd.get_status_field("secondary_channel")
if int(sec) == 0:
raise Exception("Secondary channel not set")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
def test_ap_acs_vht40(dev, apdev):
"""Automatic channel selection for VHT40"""
try:
hapd = None
force_prev_ap_on_5g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['hw_mode'] = 'a'
params['channel'] = '0'
params['ht_capab'] = '[HT40+]'
params['country_code'] = 'US'
params['ieee80211ac'] = '1'
params['vht_oper_chwidth'] = '0'
params['acs_num_scans'] = '1'
params['chanlist'] = '36 149'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 5000:
raise Exception("Unexpected frequency")
sec = hapd.get_status_field("secondary_channel")
if int(sec) == 0:
raise Exception("Secondary channel not set")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
def test_ap_acs_vht160(dev, apdev):
"""Automatic channel selection for VHT160"""
try:
hapd = None
force_prev_ap_on_5g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['hw_mode'] = 'a'
params['channel'] = '0'
params['ht_capab'] = '[HT40+]'
params['country_code'] = 'ZA'
params['ieee80211ac'] = '1'
params['vht_oper_chwidth'] = '2'
params["vht_oper_centr_freq_seg0_idx"] = "114"
params['ieee80211d'] = '1'
params['ieee80211h'] = '1'
params['chanlist'] = '100'
params['acs_num_scans'] = '1'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=10)
if not ev:
raise Exception("ACS start timed out")
# VHT160 is not currently supported in hostapd ACS, so do not try to
# enforce successful AP start.
if "AP-ENABLED" in ev:
freq = hapd.get_status_field("freq")
if int(freq) < 5000:
raise Exception("Unexpected frequency")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
def test_ap_acs_vht160_scan_disable(dev, apdev):
"""Automatic channel selection for VHT160 and DISABLE during scan"""
force_prev_ap_on_5g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['hw_mode'] = 'a'
params['channel'] = '0'
params['ht_capab'] = '[HT40+]'
params['country_code'] = 'ZA'
params['ieee80211ac'] = '1'
params['vht_oper_chwidth'] = '2'
params["vht_oper_centr_freq_seg0_idx"] = "114"
params['ieee80211d'] = '1'
params['ieee80211h'] = '1'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
time.sleep(3)
hapd.request("DISABLE")
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
def test_ap_acs_bias(dev, apdev):
"""Automatic channel selection with bias values"""
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = '0'
params['acs_chan_bias'] = '1:0.8 3:1.2 6:0.7 11:0.8'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 2400:
raise Exception("Unexpected frequency")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
def test_ap_acs_survey(dev, apdev):
"""Automatic channel selection using acs_survey parameter"""
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = 'acs_survey'
params['acs_num_scans'] = '1'
hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
wait_acs(hapd)
freq = hapd.get_status_field("freq")
if int(freq) < 2400:
raise Exception("Unexpected frequency")
dev[0].connect("test-acs", psk="12345678", scan_freq=freq)
def test_ap_acs_errors(dev, apdev):
"""Automatic channel selection failures"""
clear_scan_cache(apdev[0])
force_prev_ap_on_24g(apdev[0])
params = hostapd.wpa2_params(ssid="test-acs", passphrase="12345678")
params['channel'] = '0'
params['acs_num_scans'] = '2'
params['chanlist'] = '1'
hapd = hostapd.add_ap(apdev[0], params, no_enable=True)
with alloc_fail(hapd, 1, "acs_request_scan"):
if "FAIL" not in hapd.request("ENABLE"):
raise Exception("Unexpected success for ENABLE")
hapd.dump_monitor()
with fail_test(hapd, 1, "acs_request_scan"):
if "FAIL" not in hapd.request("ENABLE"):
raise Exception("Unexpected success for ENABLE")
hapd.dump_monitor()
with fail_test(hapd, 1, "acs_scan_complete"):
hapd.enable()
ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=10)
if not ev:
raise Exception("ACS start timed out")
hapd.dump_monitor()
with fail_test(hapd, 1, "acs_request_scan;acs_scan_complete"):
hapd.enable()
ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=10)
if not ev:
raise Exception("ACS start timed out")
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