| # 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 and event not in ev: |
| raise Exception("Unexpected DFS event") |
| return ev |
| |
| def start_dfs_ap(ap, allow_failure=False): |
| ifname = ap['ifname'] |
| 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": |
| if allow_failure: |
| logger.info("Interface state not DFS: " + state) |
| return None |
| raise Exception("Unexpected interface state: " + state) |
| |
| return hapd |
| |
| def test_dfs(dev, apdev): |
| """DFS CAC functionality on clear channel""" |
| try: |
| hapd = start_dfs_ap(apdev[0], allow_failure=True) |
| if hapd is None: |
| if not os.path.exists("dfs"): |
| return "skip" |
| raise Exception("Failed to start DFS AP") |
| |
| 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].ifname, apdev[0]['ifname']) |
| |
| 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].ifname, apdev[0]['ifname']) |
| finally: |
| subprocess.call(['sudo', 'iw', 'reg', 'set', '00']) |
| |
| def test_dfs_radar(dev, apdev): |
| """DFS CAC functionality with radar detected""" |
| try: |
| hapd = start_dfs_ap(apdev[0]) |
| if hapd is None: |
| if not os.path.exists("dfs"): |
| return "skip" |
| raise Exception("Failed to start DFS AP") |
| time.sleep(1) |
| |
| phyname = hapd.get_driver_status_field("phyname") |
| radar_file = '/sys/kernel/debug/ieee80211/' + phyname + '/hwsim/dfs_simulate_radar' |
| cmd = subprocess.Popen(["sudo", "tee", radar_file], |
| stdin=subprocess.PIPE, stdout=subprocess.PIPE) |
| cmd.stdin.write("1") |
| cmd.stdin.close() |
| cmd.stdout.read() |
| cmd.stdout.close() |
| |
| 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") |
| 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: |
| subprocess.call(['sudo', 'iw', 'reg', 'set', '00']) |
| |
| 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]['ifname'], 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") |