hostap/tests/hwsim/test_dfs.py

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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.
import os
import subprocess
import time
import logging
logger = logging.getLogger()
import hwsim_utils
import hostapd
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" ]
ev = hapd.wait_event(dfs_events, timeout=timeout)
if not ev:
raise Exception("DFS event timed out")
if event not in ev:
raise Exception("Unexpected DFS event")
return ev
def start_dfs_ap(ap):
ifname = ap['ifname']
logger.info("Reset regulatory setup")
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
time.sleep(1)
subprocess.call(['sudo', 'iw', 'reg', 'set', 'FI'])
logger.info("Starting AP " + ifname + " on DFS channel")
hapd_global = hostapd.HostapdGlobal()
hapd_global.remove(ifname)
hapd_global.add(ifname)
hapd = hostapd.Hostapd(ifname)
if not hapd.ping():
raise Exception("Could not ping hostapd")
hapd.set_defaults()
hapd.set("ssid", "dfs")
hapd.set("country_code", "FI")
hapd.set("ieee80211d", "1")
hapd.set("ieee80211h", "1")
hapd.set("hw_mode", "a")
hapd.set("channel", "52")
hapd.enable()
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":
raise Exception("Unexpected interface state")
return hapd
def test_dfs(dev, apdev):
"""DFS CAC functionality on clear channel"""
if not os.path.exists("dfs"):
return "skip"
hapd = start_dfs_ap(apdev[0])
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")
#TODO: need to fix hwsim for DFS?!
#dev[0].connect("dfs", key_mgmt="NONE")
def test_dfs_radar(dev, apdev):
"""DFS CAC functionality with radar detected"""
if not os.path.exists("dfs"):
return "skip"
hapd = start_dfs_ap(apdev[0])
hapd.request("RADAR DETECTED freq=5260 ht_enabled=1 chan_width=1")
ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 70)
if "freq=5260" not in ev:
raise Exception("Unexpected DFS radar detection freq")
state = hapd.get_status_field("state")
if state != "DFS":
raise Exception("Unexpected interface state")
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, "DFS-CAC-START", 5)
if "DFS-CAC-START" not in ev:
raise Exception("Unexpected DFS event")
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")
#TODO: need to fix hwsim for DFS?!
#dev[0].connect("dfs", key_mgmt="NONE")