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hostap/tests/hwsim/test_dfs.py
Jouni Malinen 32452fd2aa tests: Split dfs_radar into two test cases (dfs_radar1 and dfs_radar2) 
These DFS radar detection cases were in a single test case to optimize
test execution time with parallel wait for the 60 second CAC. However,
this design has become difficult to support with the kernel changes that
allow radar events to be shared between interfaces. To avoid need for
more workarounds here just for testing purposes, split this into two
test cases so that conflicting events from another interface do not
cause the test case to fail.

Signed-off-by: Jouni Malinen <j@w1.fi>
2017-11-26 12:57:27 +02:00

511 lines
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# Test cases for DFS
# Copyright (c) 2013, 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 HwsimSkip
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")
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:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
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:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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'])
@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")
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
if hapd.get_status_field('vht_oper_centr_freq_seg0_idx') != "42":
raise Exception("Unexpected seg0 idx")
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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")
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
dev[0].request("DISCONNECT")
if hapd:
hapd.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
dev[0].flush_scan_cache()
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