libeap/tests/hwsim/test_dfs.py

   1 # Test cases for DFS
   2 # Copyright (c) 2013, Jouni Malinen <j@w1.fi>
   3 #
   4 # This software may be distributed under the terms of the BSD license.
   5 # See README for more details.
   6
   7 import os
   8 import subprocess
   9 import time
  10 import logging
  11 logger = logging.getLogger()
  12
  13 import hwsim_utils
  14 import hostapd
  15 from utils import HwsimSkip
  16
  17 def wait_dfs_event(hapd, event, timeout):
  18     dfs_events = [ "DFS-RADAR-DETECTED", "DFS-NEW-CHANNEL",
  19                    "DFS-CAC-START", "DFS-CAC-COMPLETED",
  20                    "DFS-NOP-FINISHED", "AP-ENABLED", "AP-CSA-FINISHED" ]
  21     ev = hapd.wait_event(dfs_events, timeout=timeout)
  22     if not ev:
  23         raise Exception("DFS event timed out")
  24     if event and event not in ev:
  25         raise Exception("Unexpected DFS event")
  26     return ev
  27
  28 def start_dfs_ap(ap, allow_failure=False, ssid="dfs", ht=True, ht40=False,
  29                  ht40minus=False, vht80=False, vht20=False, chanlist=None):
  30     ifname = ap['ifname']
  31     logger.info("Starting AP " + ifname + " on DFS channel")
  32     hapd_global = hostapd.HostapdGlobal()
  33     hapd_global.remove(ifname)
  34     hapd_global.add(ifname)
  35     hapd = hostapd.Hostapd(ifname)
  36     if not hapd.ping():
  37         raise Exception("Could not ping hostapd")
  38     hapd.set_defaults()
  39     hapd.set("ssid", ssid)
  40     hapd.set("country_code", "FI")
  41     hapd.set("ieee80211d", "1")
  42     hapd.set("ieee80211h", "1")
  43     hapd.set("hw_mode", "a")
  44     hapd.set("channel", "52")
  45     if not ht:
  46         hapd.set("ieee80211n", "0")
  47     if ht40:
  48         hapd.set("ht_capab", "[HT40+]")
  49     elif ht40minus:
  50         hapd.set("ht_capab", "[HT40-]")
  51         hapd.set("channel", "56")
  52     if vht80:
  53         hapd.set("ieee80211ac", "1")
  54         hapd.set("vht_oper_chwidth", "1")
  55         hapd.set("vht_oper_centr_freq_seg0_idx", "58")
  56     if vht20:
  57         hapd.set("ieee80211ac", "1")
  58         hapd.set("vht_oper_chwidth", "0")
  59         hapd.set("vht_oper_centr_freq_seg0_idx", "0")
  60     if chanlist:
  61         hapd.set("chanlist", chanlist)
  62     hapd.enable()
  63
  64     ev = wait_dfs_event(hapd, "DFS-CAC-START", 5)
  65     if "DFS-CAC-START" not in ev:
  66         raise Exception("Unexpected DFS event")
  67
  68     state = hapd.get_status_field("state")
  69     if state != "DFS":
  70         if allow_failure:
  71             logger.info("Interface state not DFS: " + state)
  72             if not os.path.exists("dfs"):
  73                 raise HwsimSkip("Assume DFS testing not supported")
  74             raise Exception("Failed to start DFS AP")
  75         raise Exception("Unexpected interface state: " + state)
  76
  77     return hapd
  78
  79 def dfs_simulate_radar(hapd):
  80     logger.info("Trigger a simulated radar event")
  81     phyname = hapd.get_driver_status_field("phyname")
  82     radar_file = '/sys/kernel/debug/ieee80211/' + phyname + '/hwsim/dfs_simulate_radar'
  83     with open(radar_file, 'w') as f:
  84         f.write('1')
  85
  86 def test_dfs(dev, apdev):
  87     """DFS CAC functionality on clear channel"""
  88     try:
  89         hapd = None
  90         hapd = start_dfs_ap(apdev[0], allow_failure=True)
  91
  92         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
  93         if "success=1" not in ev:
  94             raise Exception("CAC failed")
  95         if "freq=5260" not in ev:
  96             raise Exception("Unexpected DFS freq result")
  97
  98         ev = hapd.wait_event(["AP-ENABLED"], timeout=5)
  99         if not ev:
 100             raise Exception("AP setup timed out")
 101
 102         state = hapd.get_status_field("state")
 103         if state != "ENABLED":
 104             raise Exception("Unexpected interface state")
 105
 106         freq = hapd.get_status_field("freq")
 107         if freq != "5260":
 108             raise Exception("Unexpected frequency")
 109
 110         dev[0].connect("dfs", key_mgmt="NONE")
 111         hwsim_utils.test_connectivity(dev[0], hapd)
 112
 113         hapd.request("RADAR DETECTED freq=5260 ht_enabled=1 chan_width=1")
 114         ev = hapd.wait_event(["DFS-RADAR-DETECTED"], timeout=10)
 115         if ev is None:
 116             raise Exception("DFS-RADAR-DETECTED event not reported")
 117         if "freq=5260" not in ev:
 118             raise Exception("Incorrect frequency in radar detected event: " + ev);
 119         ev = hapd.wait_event(["DFS-NEW-CHANNEL"], timeout=70)
 120         if ev is None:
 121             raise Exception("DFS-NEW-CHANNEL event not reported")
 122         if "freq=5260" in ev:
 123             raise Exception("Channel did not change after radar was detected");
 124
 125         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=70)
 126         if ev is None:
 127             raise Exception("AP-CSA-FINISHED event not reported")
 128         if "freq=5260" in ev:
 129             raise Exception("Channel did not change after radar was detected(2)");
 130         time.sleep(1)
 131         hwsim_utils.test_connectivity(dev[0], hapd)
 132     finally:
 133         dev[0].request("DISCONNECT")
 134         if hapd:
 135             hapd.request("DISABLE")
 136         subprocess.call(['iw', 'reg', 'set', '00'])
 137         dev[0].flush_scan_cache()
 138
 139 def test_dfs_radar(dev, apdev):
 140     """DFS CAC functionality with radar detected"""
 141     try:
 142         hapd = None
 143         hapd2 = None
 144         hapd = start_dfs_ap(apdev[0], allow_failure=True)
 145         time.sleep(1)
 146
 147         dfs_simulate_radar(hapd)
 148
 149         hapd2 = start_dfs_ap(apdev[1], ssid="dfs2", ht40=True)
 150
 151         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
 152         if ev is None:
 153             raise Exception("Timeout on DFS aborted event")
 154         if "success=0 freq=5260" not in ev:
 155             raise Exception("Unexpected DFS aborted event contents: " + ev)
 156
 157         ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
 158         if "freq=5260" not in ev:
 159             raise Exception("Unexpected DFS radar detection freq")
 160
 161         ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
 162         if "freq=5260" in ev:
 163             raise Exception("Unexpected DFS new freq")
 164
 165         ev = wait_dfs_event(hapd, None, 5)
 166         if "AP-ENABLED" in ev:
 167             logger.info("Started AP on non-DFS channel")
 168         else:
 169             logger.info("Trying to start AP on another DFS channel")
 170             if "DFS-CAC-START" not in ev:
 171                 raise Exception("Unexpected DFS event")
 172             if "freq=5260" in ev:
 173                 raise Exception("Unexpected DFS CAC freq")
 174
 175             ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 70)
 176             if "success=1" not in ev:
 177                 raise Exception("CAC failed")
 178             if "freq=5260" in ev:
 179                 raise Exception("Unexpected DFS freq result - radar channel")
 180
 181             ev = hapd.wait_event(["AP-ENABLED"], timeout=5)
 182             if not ev:
 183                 raise Exception("AP setup timed out")
 184
 185             state = hapd.get_status_field("state")
 186             if state != "ENABLED":
 187                 raise Exception("Unexpected interface state")
 188
 189             freq = hapd.get_status_field("freq")
 190             if freq == "5260":
 191                 raise Exception("Unexpected frequency: " + freq)
 192
 193         dev[0].connect("dfs", key_mgmt="NONE")
 194
 195         ev = hapd2.wait_event(["AP-ENABLED"], timeout=70)
 196         if not ev:
 197             raise Exception("AP2 setup timed out")
 198
 199         dfs_simulate_radar(hapd2)
 200
 201         ev = wait_dfs_event(hapd2, "DFS-RADAR-DETECTED", 5)
 202         if "freq=5260 ht_enabled=1 chan_offset=1 chan_width=2" not in ev:
 203             raise Exception("Unexpected DFS radar detection freq from AP2")
 204
 205         ev = wait_dfs_event(hapd2, "DFS-NEW-CHANNEL", 5)
 206         if "freq=5260" in ev:
 207             raise Exception("Unexpected DFS new freq for AP2")
 208
 209         wait_dfs_event(hapd2, None, 5)
 210     finally:
 211         dev[0].request("DISCONNECT")
 212         if hapd:
 213             hapd.request("DISABLE")
 214         if hapd2:
 215             hapd2.request("DISABLE")
 216         subprocess.call(['iw', 'reg', 'set', '00'])
 217         dev[0].flush_scan_cache()
 218
 219 def test_dfs_radar_on_non_dfs_channel(dev, apdev):
 220     """DFS radar detection test code on non-DFS channel"""
 221     params = { "ssid": "radar" }
 222     hapd = hostapd.add_ap(apdev[0]['ifname'], params)
 223
 224     hapd.request("RADAR DETECTED freq=5260 ht_enabled=1 chan_width=1")
 225     hapd.request("RADAR DETECTED freq=2412 ht_enabled=1 chan_width=1")
 226
 227 def test_dfs_radar_chanlist(dev, apdev):
 228     """DFS chanlist when radar is detected"""
 229     try:
 230         hapd = None
 231         hapd = start_dfs_ap(apdev[0], chanlist="40 44", allow_failure=True)
 232         time.sleep(1)
 233
 234         dfs_simulate_radar(hapd)
 235
 236         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
 237         if ev is None:
 238             raise Exception("Timeout on DFS aborted event")
 239         if "success=0 freq=5260" not in ev:
 240             raise Exception("Unexpected DFS aborted event contents: " + ev)
 241
 242         ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
 243         if "freq=5260" not in ev:
 244             raise Exception("Unexpected DFS radar detection freq")
 245
 246         ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
 247         if "freq=5200 chan=40" not in ev and "freq=5220 chan=44" not in ev:
 248             raise Exception("Unexpected DFS new freq: " + ev)
 249
 250         ev = wait_dfs_event(hapd, None, 5)
 251         if "AP-ENABLED" not in ev:
 252             raise Exception("Unexpected DFS event")
 253         dev[0].connect("dfs", key_mgmt="NONE")
 254     finally:
 255         dev[0].request("DISCONNECT")
 256         if hapd:
 257             hapd.request("DISABLE")
 258         subprocess.call(['iw', 'reg', 'set', '00'])
 259         dev[0].flush_scan_cache()
 260
 261 def test_dfs_radar_chanlist_vht80(dev, apdev):
 262     """DFS chanlist when radar is detected and VHT80 configured"""
 263     try:
 264         hapd = None
 265         hapd = start_dfs_ap(apdev[0], chanlist="36", ht40=True, vht80=True,
 266                             allow_failure=True)
 267         time.sleep(1)
 268
 269         dfs_simulate_radar(hapd)
 270
 271         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
 272         if ev is None:
 273             raise Exception("Timeout on DFS aborted event")
 274         if "success=0 freq=5260" not in ev:
 275             raise Exception("Unexpected DFS aborted event contents: " + ev)
 276
 277         ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
 278         if "freq=5260" not in ev:
 279             raise Exception("Unexpected DFS radar detection freq")
 280
 281         ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
 282         if "freq=5180 chan=36 sec_chan=1" not in ev:
 283             raise Exception("Unexpected DFS new freq: " + ev)
 284
 285         ev = wait_dfs_event(hapd, None, 5)
 286         if "AP-ENABLED" not in ev:
 287             raise Exception("Unexpected DFS event")
 288         dev[0].connect("dfs", key_mgmt="NONE")
 289
 290         if hapd.get_status_field('vht_oper_centr_freq_seg0_idx') != "42":
 291             raise Exception("Unexpected seg0 idx")
 292     finally:
 293         dev[0].request("DISCONNECT")
 294         if hapd:
 295             hapd.request("DISABLE")
 296         subprocess.call(['iw', 'reg', 'set', '00'])
 297         dev[0].flush_scan_cache()
 298
 299 def test_dfs_radar_chanlist_vht20(dev, apdev):
 300     """DFS chanlist when radar is detected and VHT40 configured"""
 301     try:
 302         hapd = None
 303         hapd = start_dfs_ap(apdev[0], chanlist="36", vht20=True,
 304                             allow_failure=True)
 305         time.sleep(1)
 306
 307         dfs_simulate_radar(hapd)
 308
 309         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
 310         if ev is None:
 311             raise Exception("Timeout on DFS aborted event")
 312         if "success=0 freq=5260" not in ev:
 313             raise Exception("Unexpected DFS aborted event contents: " + ev)
 314
 315         ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
 316         if "freq=5260" not in ev:
 317             raise Exception("Unexpected DFS radar detection freq")
 318
 319         ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
 320         if "freq=5180 chan=36 sec_chan=0" not in ev:
 321             raise Exception("Unexpected DFS new freq: " + ev)
 322
 323         ev = wait_dfs_event(hapd, None, 5)
 324         if "AP-ENABLED" not in ev:
 325             raise Exception("Unexpected DFS event")
 326         dev[0].connect("dfs", key_mgmt="NONE")
 327     finally:
 328         dev[0].request("DISCONNECT")
 329         if hapd:
 330             hapd.request("DISABLE")
 331         subprocess.call(['iw', 'reg', 'set', '00'])
 332         dev[0].flush_scan_cache()
 333
 334 def test_dfs_radar_no_ht(dev, apdev):
 335     """DFS chanlist when radar is detected and no HT configured"""
 336     try:
 337         hapd = None
 338         hapd = start_dfs_ap(apdev[0], chanlist="36", ht=False,
 339                             allow_failure=True)
 340         time.sleep(1)
 341
 342         dfs_simulate_radar(hapd)
 343
 344         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
 345         if ev is None:
 346             raise Exception("Timeout on DFS aborted event")
 347         if "success=0 freq=5260" not in ev:
 348             raise Exception("Unexpected DFS aborted event contents: " + ev)
 349
 350         ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
 351         if "freq=5260 ht_enabled=0" not in ev:
 352             raise Exception("Unexpected DFS radar detection freq: " + ev)
 353
 354         ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
 355         if "freq=5180 chan=36 sec_chan=0" not in ev:
 356             raise Exception("Unexpected DFS new freq: " + ev)
 357
 358         ev = wait_dfs_event(hapd, None, 5)
 359         if "AP-ENABLED" not in ev:
 360             raise Exception("Unexpected DFS event")
 361         dev[0].connect("dfs", key_mgmt="NONE")
 362     finally:
 363         dev[0].request("DISCONNECT")
 364         if hapd:
 365             hapd.request("DISABLE")
 366         subprocess.call(['iw', 'reg', 'set', '00'])
 367         dev[0].flush_scan_cache()
 368
 369 def test_dfs_radar_ht40minus(dev, apdev):
 370     """DFS chanlist when radar is detected and HT40- configured"""
 371     try:
 372         hapd = None
 373         hapd = start_dfs_ap(apdev[0], chanlist="36", ht40minus=True,
 374                             allow_failure=True)
 375         time.sleep(1)
 376
 377         dfs_simulate_radar(hapd)
 378
 379         ev = wait_dfs_event(hapd, "DFS-CAC-COMPLETED", 5)
 380         if ev is None:
 381             raise Exception("Timeout on DFS aborted event")
 382         if "success=0 freq=5280 ht_enabled=1 chan_offset=-1" not in ev:
 383             raise Exception("Unexpected DFS aborted event contents: " + ev)
 384
 385         ev = wait_dfs_event(hapd, "DFS-RADAR-DETECTED", 5)
 386         if "freq=5280 ht_enabled=1 chan_offset=-1" not in ev:
 387             raise Exception("Unexpected DFS radar detection freq: " + ev)
 388
 389         ev = wait_dfs_event(hapd, "DFS-NEW-CHANNEL", 5)
 390         if "freq=5180 chan=36 sec_chan=1" not in ev:
 391             raise Exception("Unexpected DFS new freq: " + ev)
 392
 393         ev = wait_dfs_event(hapd, None, 5)
 394         if "AP-ENABLED" not in ev:
 395             raise Exception("Unexpected DFS event")
 396         dev[0].connect("dfs", key_mgmt="NONE")
 397     finally:
 398         dev[0].request("DISCONNECT")
 399         if hapd:
 400             hapd.request("DISABLE")
 401         subprocess.call(['iw', 'reg', 'set', '00'])
 402         dev[0].flush_scan_cache()