hostap/tests/hwsim/test_ap_acs.py
Jouni Malinen 0860b2199f tests: Make ap_acs_40mhz more robust
Explicitly clear cached scan results on the AP interface before starting
ACS. This avoids issues where conflicting BSS entries from previously
executed test cases could affect channel selection.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-03-07 17:02:40 +02:00

210 lines
7.2 KiB
Python

# Test cases for automatic channel selection with hostapd
# Copyright (c) 2013-2014, 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 subprocess
import time
import hostapd
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['ifname'], { "ssid": "open" })
time.sleep(0.1)
hapd_global = hostapd.HostapdGlobal()
hapd_global.remove(ap['ifname'])
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['ifname'], { "ssid": "open", "hw_mode": "a",
"channel": "36", "country_code": "US" })
time.sleep(0.1)
hapd_global = hostapd.HostapdGlobal()
hapd_global.remove(ap['ifname'])
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]['ifname'], 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"""
ifname = apdev[0]['ifname']
force_prev_ap_on_24g(apdev[0])
# start the actual test
hostapd.add_iface(ifname, 'multi-bss-acs.conf')
hapd = hostapd.Hostapd(ifname)
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]['ifname'])
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]['ifname'], 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_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]['ifname'], 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")
subprocess.call(['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]['ifname'], 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")
subprocess.call(['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]['ifname'], 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")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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]['ifname'], 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)