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hostapd/tests/hwsim/test_ap_acs.py
Jouni Malinen b586054f95 tests: Work around cfg80211 reg.c intersection (country 98) issues 
The Linux kernel commit 113f3aaa81bd ("cfg80211: Prevent regulatory
restore during STA disconnect in concurrent interfaces") broke the
regulatory clearing attempt in many test cases since
cfg80211_is_all_idle() is now returning false due to the AP interface
being up and that results in the Country IE -based regulatory
information not getting cleared back to defaults.

Work around this by stopping the AP interface first so that when the
station interface receives the disconnection, there are no other active
interfaces in the system. In addition, wait for REGDOM event for the
Country IE hint after association to avoid disconnection before the
regulatory events have been fully processed.

Signed-off-by: Jouni Malinen <j@w1.fi>
2018-12-23 17:25:11 +02:00

388 lines
14 KiB
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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)
dev[0].wait_regdom(country_ie=True)
finally:
if hapd:
hapd.request("DISABLE")
dev[0].request("DISCONNECT")
dev[0].request("ABORT_SCAN")
dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=0.5)
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)
dev[0].wait_regdom(country_ie=True)
finally:
if hapd:
hapd.request("DISABLE")
dev[0].request("DISCONNECT")
dev[0].request("ABORT_SCAN")
dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=0.5)
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)
dev[0].wait_regdom(country_ie=True)
finally:
if hapd:
hapd.request("DISABLE")
dev[0].request("DISCONNECT")
dev[0].request("ABORT_SCAN")
dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=0.5)
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)
dev[0].wait_regdom(country_ie=True)
finally:
if hapd:
hapd.request("DISABLE")
dev[0].request("DISCONNECT")
dev[0].request("ABORT_SCAN")
dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=0.5)
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)
dev[0].wait_regdom(country_ie=True)
finally:
if hapd:
hapd.request("DISABLE")
dev[0].request("DISCONNECT")
dev[0].request("ABORT_SCAN")
dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
hostapd.cmd_execute(apdev[0], ['iw', 'reg', 'set', '00'])
dev[0].wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=0.5)
dev[0].flush_scan_cache()
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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