hostap/tests/hwsim/test_dfs.py

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# Test cases for DFS
# Copyright (c) 2013-2019, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
from remotehost import remote_compatible
import os
import subprocess
import time
import logging
logger = logging.getLogger()
import hwsim_utils
import hostapd
from utils import *
def wait_dfs_event(hapd, event, timeout):
dfs_events = ["DFS-RADAR-DETECTED", "DFS-NEW-CHANNEL",
"DFS-CAC-START", "DFS-CAC-COMPLETED",
"DFS-NOP-FINISHED", "AP-ENABLED", "AP-CSA-FINISHED"]
ev = hapd.wait_event(dfs_events, timeout=timeout)
if not ev:
raise Exception("DFS event timed out")
if event and event not in ev:
raise Exception("Unexpected DFS event: " + ev + " (expected: %s)" % event)
return ev
def start_dfs_ap(ap, allow_failure=False, ssid="dfs", ht=True, ht40=False,
ht40minus=False, vht80=False, vht20=False, chanlist=None,
channel=None, country="FI"):
ifname = ap['ifname']
logger.info("Starting AP " + ifname + " on DFS channel")
hapd = hostapd.add_ap(ap, {}, no_enable=True)
hapd.set("ssid", ssid)
hapd.set("country_code", country)
hapd.set("ieee80211d", "1")
hapd.set("ieee80211h", "1")
hapd.set("hw_mode", "a")
hapd.set("channel", "52")
if not ht:
hapd.set("ieee80211n", "0")
if ht40:
hapd.set("ht_capab", "[HT40+]")
elif ht40minus:
hapd.set("ht_capab", "[HT40-]")
hapd.set("channel", "56")
if vht80:
hapd.set("ieee80211ac", "1")
hapd.set("vht_oper_chwidth", "1")
hapd.set("vht_oper_centr_freq_seg0_idx", "58")
if vht20:
hapd.set("ieee80211ac", "1")
hapd.set("vht_oper_chwidth", "0")
hapd.set("vht_oper_centr_freq_seg0_idx", "0")
if chanlist:
hapd.set("chanlist", chanlist)
if channel:
hapd.set("channel", str(channel))
hapd.enable()
ev = wait_dfs_event(hapd, "DFS-CAC-START", 5)
if "DFS-CAC-START" not in ev:
raise Exception("Unexpected DFS event: " + ev)
state = hapd.get_status_field("state")
if state != "DFS":
if allow_failure:
logger.info("Interface state not DFS: " + state)
if not os.path.exists("dfs"):
raise HwsimSkip("Assume DFS testing not supported")
raise Exception("Failed to start DFS AP")
raise Exception("Unexpected interface state: " + state)
return hapd
def dfs_simulate_radar(hapd):
logger.info("Trigger a simulated radar event")
phyname = hapd.get_driver_status_field("phyname")
radar_file = '/sys/kernel/debug/ieee80211/' + phyname + '/hwsim/dfs_simulate_radar'
with open(radar_file, 'w') as f:
f.write('1')
def test_dfs(dev, apdev):
"""DFS CAC functionality on clear channel"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], allow_failure=True, country="US")
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed")
if "freq=5260" 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")
freq = hapd.get_status_field("freq")
if freq != "5260":
raise Exception("Unexpected frequency")
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("RADAR DETECTED freq=5260 ht_enabled=1 chan_width=1")
ev = hapd.wait_event(["DFS-RADAR-DETECTED"], timeout=10)
if ev is None:
raise Exception("DFS-RADAR-DETECTED event not reported")
if "freq=5260" not in ev:
raise Exception("Incorrect frequency in radar detected event: " + ev)
ev = hapd.wait_event(["DFS-NEW-CHANNEL"], timeout=70)
if ev is None:
raise Exception("DFS-NEW-CHANNEL event not reported")
if "freq=5260" in ev:
raise Exception("Channel did not change after radar was detected")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=70)
if ev is None:
raise Exception("AP-CSA-FINISHED event not reported")
if "freq=5260" in ev:
raise Exception("Channel did not change after radar was detected(2)")
time.sleep(1)
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
clear_regdom(hapd, dev)
def test_dfs_etsi(dev, apdev, params):
"""DFS and uniform spreading requirement for ETSI [long]"""
if not params['long']:
raise HwsimSkip("Skip test case with long duration due to --long not specified")
try:
hapd = None
hapd = start_dfs_ap(apdev[0], allow_failure=True)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed")
if "freq=5260" 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")
freq = hapd.get_status_field("freq")
if freq != "5260":
raise Exception("Unexpected frequency")
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("RADAR DETECTED freq=%s ht_enabled=1 chan_width=1" % freq)
ev = hapd.wait_event(["DFS-RADAR-DETECTED"], timeout=5)
if ev is None:
raise Exception("DFS-RADAR-DETECTED event not reported")
if "freq=%s" % freq not in ev:
raise Exception("Incorrect frequency in radar detected event: " + ev)
ev = hapd.wait_event(["DFS-NEW-CHANNEL"], timeout=5)
if ev is None:
raise Exception("DFS-NEW-CHANNEL event not reported")
if "freq=%s" % freq in ev:
raise Exception("Channel did not change after radar was detected")
ev = hapd.wait_event(["AP-CSA-FINISHED", "DFS-CAC-START"], timeout=10)
if ev is None:
raise Exception("AP-CSA-FINISHED or DFS-CAC-START event not reported")
if "DFS-CAC-START" in ev:
# The selected new channel requires CAC
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed")
ev = hapd.wait_event(["AP-ENABLED"], timeout=5)
if not ev:
raise Exception("AP setup timed out")
ev = hapd.wait_event(["AP-STA-CONNECTED"], timeout=30)
if not ev:
raise Exception("STA did not reconnect on new DFS channel")
else:
# The new channel did not require CAC - try again
if "freq=%s" % freq in ev:
raise Exception("Channel did not change after radar was detected(2)")
time.sleep(1)
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
clear_regdom(hapd, dev)
def test_dfs_radar1(dev, apdev):
"""DFS CAC functionality with radar detected during initial CAC"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], allow_failure=True)
time.sleep(1)
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5260" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5260" not in ev:
raise Exception("Unexpected DFS radar detection freq")
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5260" in ev:
raise Exception("Unexpected DFS new freq")
ev = wait_dfs_event(hapd, None, 5)
if "AP-ENABLED" in ev:
logger.info("Started AP on non-DFS channel")
else:
logger.info("Trying to start AP on another DFS channel")
if "DFS-CAC-START" not in ev:
raise Exception("Unexpected DFS event: " + ev)
if "freq=5260" in ev:
raise Exception("Unexpected DFS CAC freq")
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed")
if "freq=5260" in ev:
raise Exception("Unexpected DFS freq result - radar channel")
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")
freq = hapd.get_status_field("freq")
if freq == "5260":
raise Exception("Unexpected frequency: " + freq)
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
finally:
clear_regdom(hapd, dev)
def test_dfs_radar2(dev, apdev):
"""DFS CAC functionality with radar detected after initial CAC"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], ssid="dfs2", ht40=True)
ev = hapd.wait_event(["AP-ENABLED"], timeout=70)
if not ev:
raise Exception("AP2 setup timed out")
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5260 ht_enabled=1 chan_offset=1 chan_width=2" not in ev:
raise Exception("Unexpected DFS radar detection freq from AP2")
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5260" in ev:
raise Exception("Unexpected DFS new freq for AP2")
wait_dfs_event(hapd, None, 5)
finally:
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
time.sleep(0.1)
@remote_compatible
def test_dfs_radar_on_non_dfs_channel(dev, apdev):
"""DFS radar detection test code on non-DFS channel"""
params = {"ssid": "radar"}
hapd = hostapd.add_ap(apdev[0], params)
hapd.request("RADAR DETECTED freq=5260 ht_enabled=1 chan_width=1")
hapd.request("RADAR DETECTED freq=2412 ht_enabled=1 chan_width=1")
def test_dfs_radar_chanlist(dev, apdev):
"""DFS chanlist when radar is detected"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], chanlist="40 44", allow_failure=True)
time.sleep(1)
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5260" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5260" not in ev:
raise Exception("Unexpected DFS radar detection freq")
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5200 chan=40" not in ev and "freq=5220 chan=44" not in ev:
raise Exception("Unexpected DFS new freq: " + ev)
ev = wait_dfs_event(hapd, None, 5)
if "AP-ENABLED" not in ev:
raise Exception("Unexpected DFS event: " + ev)
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
finally:
clear_regdom(hapd, dev)
def test_dfs_radar_chanlist_vht80(dev, apdev):
"""DFS chanlist when radar is detected and VHT80 configured"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], chanlist="36", ht40=True, vht80=True,
allow_failure=True)
time.sleep(1)
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5260" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5260" not in ev:
raise Exception("Unexpected DFS radar detection freq")
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5180 chan=36 sec_chan=1" not in ev:
raise Exception("Unexpected DFS new freq: " + ev)
ev = wait_dfs_event(hapd, None, 5)
if "AP-ENABLED" not in ev:
raise Exception("Unexpected DFS event: " + ev)
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
if hapd.get_status_field('vht_oper_centr_freq_seg0_idx') != "42":
raise Exception("Unexpected seg0 idx")
finally:
clear_regdom(hapd, dev)
def test_dfs_radar_chanlist_vht20(dev, apdev):
"""DFS chanlist when radar is detected and VHT40 configured"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], chanlist="36", vht20=True,
allow_failure=True)
time.sleep(1)
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5260" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5260" not in ev:
raise Exception("Unexpected DFS radar detection freq")
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5180 chan=36 sec_chan=0" not in ev:
raise Exception("Unexpected DFS new freq: " + ev)
ev = wait_dfs_event(hapd, None, 5)
if "AP-ENABLED" not in ev:
raise Exception("Unexpected DFS event: " + ev)
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
finally:
clear_regdom(hapd, dev)
def test_dfs_radar_no_ht(dev, apdev):
"""DFS chanlist when radar is detected and no HT configured"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], chanlist="36", ht=False,
allow_failure=True)
time.sleep(1)
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5260" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5260 ht_enabled=0" not in ev:
raise Exception("Unexpected DFS radar detection freq: " + ev)
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5180 chan=36 sec_chan=0" not in ev:
raise Exception("Unexpected DFS new freq: " + ev)
ev = wait_dfs_event(hapd, None, 5)
if "AP-ENABLED" not in ev:
raise Exception("Unexpected DFS event: " + ev)
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
finally:
clear_regdom(hapd, dev)
def test_dfs_radar_ht40minus(dev, apdev):
"""DFS chanlist when radar is detected and HT40- configured"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], chanlist="36", ht40minus=True,
allow_failure=True)
time.sleep(1)
dfs_simulate_radar(hapd)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5280 ht_enabled=1 chan_offset=-1" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
if "freq=5280 ht_enabled=1 chan_offset=-1" not in ev:
raise Exception("Unexpected DFS radar detection freq: " + ev)
ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
if "freq=5180 chan=36 sec_chan=1" not in ev:
raise Exception("Unexpected DFS new freq: " + ev)
ev = wait_dfs_event(hapd, None, 5)
if "AP-ENABLED" not in ev:
raise Exception("Unexpected DFS event: " + ev)
dev[0].connect("dfs", key_mgmt="NONE")
dev[0].wait_regdom(country_ie=True)
dev[0].request("STA_AUTOCONNECT 0")
finally:
clear_regdom(hapd, dev)
dev[0].request("STA_AUTOCONNECT 1")
def test_dfs_ht40_minus(dev, apdev, params):
"""DFS CAC functionality on channel 104 HT40- [long]"""
if not params['long']:
raise HwsimSkip("Skip test case with long duration due to --long not specified")
try:
hapd = None
hapd = start_dfs_ap(apdev[0], allow_failure=True, ht40minus=True,
channel=104)
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
if "success=1" not in ev:
raise Exception("CAC failed")
if "freq=5520" 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")
freq = hapd.get_status_field("freq")
if freq != "5520":
raise Exception("Unexpected frequency")
dev[0].connect("dfs", key_mgmt="NONE", scan_freq="5520")
dev[0].wait_regdom(country_ie=True)
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
clear_regdom(hapd, dev)
def test_dfs_cac_restart_on_enable(dev, apdev):
"""DFS CAC interrupted and restarted"""
try:
hapd = None
hapd = start_dfs_ap(apdev[0], allow_failure=True)
time.sleep(0.1)
subprocess.check_call(['ip', 'link', 'set', 'dev', hapd.ifname, 'down'])
ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
if ev is None:
raise Exception("Timeout on DFS aborted event")
if "success=0 freq=5260" not in ev:
raise Exception("Unexpected DFS aborted event contents: " + ev)
time.sleep(0.1)
subprocess.check_call(['ip', 'link', 'set', 'dev', hapd.ifname, 'up'])
ev = wait_dfs_event(hapd, "DFS-CAC-START", 5)
if "DFS-CAC-START" not in ev:
raise Exception("Unexpected DFS event: " + ev)
hapd.disable()
finally:
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
time.sleep(0.1)