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hostap/tests/hwsim/test_ap_vht.py
Jouni Malinen 9d7fdac5b3 tests: Try to clear scan results after regulatory domain changes 
It was possible for regulatory domain changes to "leak" into following
test cases in number of cases where the cfg80211 BSS table remained
after regulatory domain had been restored to world roaming. Try to make
this less likely to occur by explicitly clearing BSS table at the end of
test cases that use different regulatory domain. This makes P2P test
cases that verify channel selection based on world roaming rules more
robust.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-15 01:32:01 +02:00

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# Test cases for VHT operations with hostapd
# Copyright (c) 2014, Qualcomm Atheros, Inc.
# Copyright (c) 2013, Intel Corporation
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import logging
logger = logging.getLogger()
import os
import subprocess, time
import hwsim_utils
import hostapd
from test_dfs import wait_dfs_event
from test_ap_csa import csa_supported
def vht_supported():
cmd = subprocess.Popen(["iw", "reg", "get"], stdout=subprocess.PIPE)
reg = cmd.stdout.read()
if "@ 80)" in reg or "@ 160)" in reg:
return True
return False
def test_ap_vht80(dev, apdev):
"""VHT with 80 MHz channel width"""
try:
hapd = None
params = { "ssid": "vht",
"country_code": "FI",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "1",
"vht_oper_centr_freq_seg0_idx": "42" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("vht", key_mgmt="NONE", scan_freq="5180")
hwsim_utils.test_connectivity(dev[0], hapd)
except Exception, e:
if isinstance(e, Exception) and str(e) == "AP startup failed":
if not vht_supported():
logger.info("80 MHz channel not supported in regulatory information")
return "skip"
raise
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
def test_ap_vht80_params(dev, apdev):
"""VHT with 80 MHz channel width and number of optional features enabled"""
try:
hapd = None
params = { "ssid": "vht",
"country_code": "FI",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+][SHORT-GI-40][DSS_CCK-40]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "1",
"vht_capab": "[MAX-MPDU-11454][RXLDPC][SHORT-GI-80][TX-STBC-2BY1][RX-STBC-1][MAX-A-MPDU-LEN-EXP0]",
"vht_oper_centr_freq_seg0_idx": "42",
"require_vht": "1" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[1].connect("vht", key_mgmt="NONE", scan_freq="5180",
disable_vht="1", wait_connect=False)
dev[0].connect("vht", key_mgmt="NONE", scan_freq="5180")
ev = dev[1].wait_event(["CTRL-EVENT-ASSOC-REJECT"])
if ev is None:
raise Exception("Association rejection timed out")
if "status_code=104" not in ev:
raise Exception("Unexpected rejection status code")
dev[1].request("DISCONNECT")
hwsim_utils.test_connectivity(dev[0], hapd)
except Exception, e:
if isinstance(e, Exception) and str(e) == "AP startup failed":
if not vht_supported():
logger.info("80 MHz channel not supported in regulatory information")
return "skip"
raise
finally:
dev[0].request("DISCONNECT")
dev[1].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
def test_ap_vht_20(devs, apdevs):
"""VHT and 20 MHz channel"""
dev = devs[0]
ap = apdevs[0]
try:
hapd = None
params = { "ssid": "test-vht20",
"country_code": "DE",
"hw_mode": "a",
"channel": "36",
"ieee80211n": "1",
"ieee80211ac": "1",
"ht_capab": "",
"vht_capab": "",
"vht_oper_chwidth": "0",
"vht_oper_centr_freq_seg0_idx": "0",
"supported_rates": "60 120 240 360 480 540",
"require_vht": "1",
}
hapd = hostapd.add_ap(ap['ifname'], params)
dev.connect("test-vht20", scan_freq="5180", key_mgmt="NONE")
hwsim_utils.test_connectivity(dev, hapd)
finally:
dev.request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
dev.flush_scan_cache()
def test_ap_vht_capab_not_supported(dev, apdev):
"""VHT configuration with driver not supporting all vht_capab entries"""
try:
params = { "ssid": "vht",
"country_code": "FI",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+][SHORT-GI-40][DSS_CCK-40]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "1",
"vht_capab": "[MAX-MPDU-7991][MAX-MPDU-11454][VHT160][VHT160-80PLUS80][RXLDPC][SHORT-GI-80][SHORT-GI-160][TX-STBC-2BY1][RX-STBC-1][RX-STBC-12][RX-STBC-123][RX-STBC-1234][SU-BEAMFORMER][SU-BEAMFORMEE][BF-ANTENNA-2][SOUNDING-DIMENSION-2][MU-BEAMFORMER][MU-BEAMFORMEE][VHT-TXOP-PS][HTC-VHT][MAX-A-MPDU-LEN-EXP0][MAX-A-MPDU-LEN-EXP7][VHT-LINK-ADAPT2][VHT-LINK-ADAPT3][RX-ANTENNA-PATTERN][TX-ANTENNA-PATTERN]",
"vht_oper_centr_freq_seg0_idx": "42",
"require_vht": "1" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params, wait_enabled=False)
ev = hapd.wait_event(["AP-DISABLED"], timeout=5)
if ev is None:
raise Exception("Startup failure not reported")
for i in range(1, 7):
if "OK" not in hapd.request("SET vht_capab [MAX-A-MPDU-LEN-EXP%d]" % i):
raise Exception("Unexpected SET failure")
finally:
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
def test_ap_vht160(dev, apdev):
"""VHT with 160 MHz channel width"""
try:
hapd = None
hapd2 = None
params = { "ssid": "vht",
"country_code": "FI",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "2",
"vht_oper_centr_freq_seg0_idx": "50",
'ieee80211d': '1',
'ieee80211h': '1' }
hapd = hostapd.add_ap(apdev[0]['ifname'], params, wait_enabled=False)
ev = wait_dfs_event(hapd, "DFS-CAC-START", 5)
if "DFS-CAC-START" not in ev:
raise Exception("Unexpected DFS event")
state = hapd.get_status_field("state")
if state != "DFS":
if state == "DISABLED" and not os.path.exists("dfs"):
# Not all systems have recent enough CRDA version and
# wireless-regdb changes to support 160 MHz and DFS. For now,
# do not report failures for this test case.
return "skip"
raise Exception("Unexpected interface state: " + state)
params = { "ssid": "vht2",
"country_code": "FI",
"hw_mode": "a",
"channel": "100",
"ht_capab": "[HT40+]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "2",
"vht_oper_centr_freq_seg0_idx": "114",
'ieee80211d': '1',
'ieee80211h': '1' }
hapd2 = hostapd.add_ap(apdev[1]['ifname'], params, wait_enabled=False)
ev = wait_dfs_event(hapd2, "DFS-CAC-START", 5)
if "DFS-CAC-START" not in ev:
raise Exception("Unexpected DFS event(2)")
state = hapd2.get_status_field("state")
if state != "DFS":
raise Exception("Unexpected interface state(2): " + state)
logger.info("Waiting for CAC to complete")
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed")
if "freq=5180" not in ev:
raise Exception("Unexpected DFS freq result")
ev = hapd.wait_event(["AP-ENABLED"], timeout=5)
if not ev:
raise Exception("AP setup timed out")
state = hapd.get_status_field("state")
if state != "ENABLED":
raise Exception("Unexpected interface state")
ev = wait_dfs_event(hapd2, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed(2)")
if "freq=5500" not in ev:
raise Exception("Unexpected DFS freq result(2)")
ev = hapd2.wait_event(["AP-ENABLED"], timeout=5)
if not ev:
raise Exception("AP setup timed out(2)")
state = hapd2.get_status_field("state")
if state != "ENABLED":
raise Exception("Unexpected interface state(2)")
freq = hapd2.get_status_field("freq")
if freq != "5500":
raise Exception("Unexpected frequency(2)")
dev[0].connect("vht", key_mgmt="NONE", scan_freq="5180")
hwsim_utils.test_connectivity(dev[0], hapd)
sig = dev[0].request("SIGNAL_POLL").splitlines()
if "FREQUENCY=5180" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(1): " + str(sig))
if "WIDTH=160 MHz" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(2): " + str(sig))
dev[1].connect("vht2", key_mgmt="NONE", scan_freq="5500")
hwsim_utils.test_connectivity(dev[1], hapd2)
sig = dev[1].request("SIGNAL_POLL").splitlines()
if "FREQUENCY=5500" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(1): " + str(sig))
if "WIDTH=160 MHz" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(2): " + str(sig))
except Exception, e:
if isinstance(e, Exception) and str(e) == "AP startup failed":
if not vht_supported():
logger.info("80/160 MHz channel not supported in regulatory information")
return "skip"
raise
finally:
dev[0].request("DISCONNECT")
dev[1].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
if hapd2:
hapd2.request("DISABLE")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
def test_ap_vht80plus80(dev, apdev):
"""VHT with 80+80 MHz channel width"""
try:
hapd = None
hapd2 = None
params = { "ssid": "vht",
"country_code": "US",
"hw_mode": "a",
"channel": "52",
"ht_capab": "[HT40+]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "3",
"vht_oper_centr_freq_seg0_idx": "58",
"vht_oper_centr_freq_seg1_idx": "155",
'ieee80211d': '1',
'ieee80211h': '1' }
hapd = hostapd.add_ap(apdev[0]['ifname'], params, wait_enabled=False)
# This will actually fail since DFS on 80+80 is not yet supported
ev = hapd.wait_event(["AP-DISABLED"], timeout=5)
# ignore result to avoid breaking the test once 80+80 DFS gets enabled
params = { "ssid": "vht2",
"country_code": "US",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "3",
"vht_oper_centr_freq_seg0_idx": "42",
"vht_oper_centr_freq_seg1_idx": "155" }
hapd2 = hostapd.add_ap(apdev[1]['ifname'], params, wait_enabled=False)
ev = hapd2.wait_event(["AP-ENABLED"], timeout=5)
if not ev:
raise Exception("AP setup timed out(2)")
state = hapd2.get_status_field("state")
if state != "ENABLED":
raise Exception("Unexpected interface state(2)")
dev[1].connect("vht2", key_mgmt="NONE", scan_freq="5180")
hwsim_utils.test_connectivity(dev[1], hapd2)
sig = dev[1].request("SIGNAL_POLL").splitlines()
if "FREQUENCY=5180" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(1): " + str(sig))
if "WIDTH=80+80 MHz" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(2): " + str(sig))
if "CENTER_FRQ1=5210" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(3): " + str(sig))
if "CENTER_FRQ2=5775" not in sig:
raise Exception("Unexpected SIGNAL_POLL value(4): " + str(sig))
except Exception, e:
if isinstance(e, Exception) and str(e) == "AP startup failed":
if not vht_supported():
logger.info("80/160 MHz channel not supported in regulatory information")
return "skip"
raise
finally:
dev[0].request("DISCONNECT")
dev[1].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
if hapd2:
hapd2.request("DISABLE")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
dev[1].flush_scan_cache()
def test_ap_vht80_csa(dev, apdev):
"""VHT with 80 MHz channel width and CSA"""
if not csa_supported(dev[0]):
return "skip"
try:
hapd = None
params = { "ssid": "vht",
"country_code": "US",
"hw_mode": "a",
"channel": "149",
"ht_capab": "[HT40+]",
"ieee80211n": "1",
"ieee80211ac": "1",
"vht_oper_chwidth": "1",
"vht_oper_centr_freq_seg0_idx": "155" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("vht", key_mgmt="NONE", scan_freq="5745")
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5180 ht vht blocktx center_freq1=5210 sec_channel_offset=1 bandwidth=80")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5180" not in ev:
raise Exception("Unexpected channel in CSA finished event")
time.sleep(0.5)
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5745")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5745" not in ev:
raise Exception("Unexpected channel in CSA finished event")
time.sleep(0.5)
hwsim_utils.test_connectivity(dev[0], hapd)
# This CSA to same channel will fail in kernel, so use this only for
# extra code coverage.
hapd.request("CHAN_SWITCH 5 5745")
hapd.wait_event(["AP-CSA-FINISHED"], timeout=1)
except Exception, e:
if isinstance(e, Exception) and str(e) == "AP startup failed":
if not vht_supported():
logger.info("80 MHz channel not supported in regulatory information")
return "skip"
raise
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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