tests/hwsim/test_ap_ht.py

   1 # Test cases for HT operations with hostapd
   2 # Copyright (c) 2013-2014, 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 from remotehost import remote_compatible
   8 import time
   9 import logging
  10 logger = logging.getLogger()
  11 import struct
  12
  13 import hostapd
  14 from utils import HwsimSkip, alloc_fail
  15 import hwsim_utils
  16 from test_ap_csa import csa_supported
  17
  18 def clear_scan_cache(apdev):
  19     ifname = apdev['ifname']
  20     hostapd.cmd_execute(apdev, ['ifconfig', ifname, 'up'])
  21     hostapd.cmd_execute(apdev, ['iw', ifname, 'scan', 'trigger', 'freq', '2412',
  22                                 'flush'])
  23     time.sleep(0.1)
  24     hostapd.cmd_execute(apdev, ['ifconfig', ifname, 'down'])
  25
  26 def set_world_reg(apdev0=None, apdev1=None, dev0=None):
  27     if apdev0:
  28         hostapd.cmd_execute(apdev0, ['iw', 'reg', 'set', '00'])
  29     if apdev1:
  30         hostapd.cmd_execute(apdev1, ['iw', 'reg', 'set', '00'])
  31     if dev0:
  32         dev0.cmd_execute(['iw', 'reg', 'set', '00'])
  33
  34 def test_ap_ht40_scan(dev, apdev):
  35     """HT40 co-ex scan"""
  36     clear_scan_cache(apdev[0])
  37     params = { "ssid": "test-ht40",
  38                "channel": "5",
  39                "ht_capab": "[HT40-]"}
  40     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
  41
  42     state = hapd.get_status_field("state")
  43     if state != "HT_SCAN":
  44         time.sleep(0.1)
  45         state = hapd.get_status_field("state")
  46         if state != "HT_SCAN":
  47             raise Exception("Unexpected interface state - expected HT_SCAN")
  48
  49     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
  50     if not ev:
  51         raise Exception("AP setup timed out")
  52
  53     state = hapd.get_status_field("state")
  54     if state != "ENABLED":
  55         raise Exception("Unexpected interface state - expected ENABLED")
  56
  57     freq = hapd.get_status_field("freq")
  58     if freq != "2432":
  59         raise Exception("Unexpected frequency")
  60     pri = hapd.get_status_field("channel")
  61     if pri != "5":
  62         raise Exception("Unexpected primary channel")
  63     sec = hapd.get_status_field("secondary_channel")
  64     if sec != "-1":
  65         raise Exception("Unexpected secondary channel")
  66
  67     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
  68
  69 @remote_compatible
  70 def test_ap_ht40_scan_conflict(dev, apdev):
  71     """HT40 co-ex scan conflict"""
  72     clear_scan_cache(apdev[0])
  73     params = { "ssid": "test-ht40",
  74                "channel": "6",
  75                "ht_capab": "[HT40+]"}
  76     hostapd.add_ap(apdev[1], params)
  77
  78     params = { "ssid": "test-ht40",
  79                "channel": "5",
  80                "ht_capab": "[HT40-]"}
  81     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
  82
  83     state = hapd.get_status_field("state")
  84     if state != "HT_SCAN":
  85         time.sleep(0.1)
  86         state = hapd.get_status_field("state")
  87         if state != "HT_SCAN":
  88             raise Exception("Unexpected interface state - expected HT_SCAN")
  89
  90     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
  91     if not ev:
  92         raise Exception("AP setup timed out")
  93
  94     state = hapd.get_status_field("state")
  95     if state != "ENABLED":
  96         raise Exception("Unexpected interface state - expected ENABLED")
  97
  98     freq = hapd.get_status_field("freq")
  99     if freq != "2432":
 100         raise Exception("Unexpected frequency")
 101     pri = hapd.get_status_field("channel")
 102     if pri != "5":
 103         raise Exception("Unexpected primary channel")
 104     sec = hapd.get_status_field("secondary_channel")
 105     if sec != "0":
 106         raise Exception("Unexpected secondary channel: " + sec)
 107
 108     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 109
 110 @remote_compatible
 111 def test_ap_ht40_scan_conflict2(dev, apdev):
 112     """HT40 co-ex scan conflict (HT40-)"""
 113     clear_scan_cache(apdev[0])
 114     params = { "ssid": "test-ht40",
 115                "channel": "11",
 116                "ht_capab": "[HT40-]"}
 117     hostapd.add_ap(apdev[1], params)
 118
 119     params = { "ssid": "test-ht40",
 120                "channel": "1",
 121                "ht_capab": "[HT40+]"}
 122     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 123
 124     state = hapd.get_status_field("state")
 125     if state != "HT_SCAN":
 126         time.sleep(0.1)
 127         state = hapd.get_status_field("state")
 128         if state != "HT_SCAN":
 129             raise Exception("Unexpected interface state - expected HT_SCAN")
 130
 131     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 132     if not ev:
 133         raise Exception("AP setup timed out")
 134
 135     state = hapd.get_status_field("state")
 136     if state != "ENABLED":
 137         raise Exception("Unexpected interface state - expected ENABLED")
 138
 139     freq = hapd.get_status_field("freq")
 140     if freq != "2412":
 141         raise Exception("Unexpected frequency")
 142     pri = hapd.get_status_field("channel")
 143     if pri != "1":
 144         raise Exception("Unexpected primary channel")
 145     sec = hapd.get_status_field("secondary_channel")
 146     if sec != "0":
 147         raise Exception("Unexpected secondary channel: " + sec)
 148
 149     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 150
 151 def test_ap_ht40_scan_not_affected(dev, apdev):
 152     """HT40 co-ex scan and other BSS not affected"""
 153     clear_scan_cache(apdev[0])
 154     params = { "ssid": "test-ht20",
 155                "channel": "11" }
 156     hostapd.add_ap(apdev[1], params)
 157
 158     hostapd.cmd_execute(apdev[0], ['ifconfig', apdev[0]['ifname'], 'up'])
 159     hostapd.cmd_execute(apdev[0], ['iw', apdev[0]['ifname'], 'scan', 'trigger',
 160                                    'freq', '2462'])
 161     time.sleep(0.5)
 162     hostapd.cmd_execute(apdev[0], ['iw', apdev[0]['ifname'], 'scan', 'dump'])
 163     time.sleep(0.1)
 164     hostapd.cmd_execute(apdev[0], ['ifconfig', apdev[0]['ifname'], 'down'])
 165
 166     params = { "ssid": "test-ht40",
 167                "channel": "1",
 168                "ht_capab": "[HT40+]"}
 169     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 170
 171     state = hapd.get_status_field("state")
 172     if state != "HT_SCAN":
 173         time.sleep(0.1)
 174         state = hapd.get_status_field("state")
 175         if state != "HT_SCAN":
 176             raise Exception("Unexpected interface state - expected HT_SCAN")
 177
 178     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 179     if not ev:
 180         raise Exception("AP setup timed out")
 181
 182     state = hapd.get_status_field("state")
 183     if state != "ENABLED":
 184         raise Exception("Unexpected interface state - expected ENABLED")
 185
 186     freq = hapd.get_status_field("freq")
 187     if freq != "2412":
 188         raise Exception("Unexpected frequency")
 189     pri = hapd.get_status_field("channel")
 190     if pri != "1":
 191         raise Exception("Unexpected primary channel")
 192     sec = hapd.get_status_field("secondary_channel")
 193     if sec != "1":
 194         raise Exception("Unexpected secondary channel: " + sec)
 195
 196     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 197
 198 @remote_compatible
 199 def test_ap_ht40_scan_legacy_conflict(dev, apdev):
 200     """HT40 co-ex scan conflict with legacy 20 MHz AP"""
 201     clear_scan_cache(apdev[0])
 202     params = { "ssid": "legacy-20",
 203                "channel": "7", "ieee80211n": "0" }
 204     hostapd.add_ap(apdev[1], params)
 205
 206     params = { "ssid": "test-ht40",
 207                "channel": "5",
 208                "ht_capab": "[HT40-]"}
 209     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 210
 211     state = hapd.get_status_field("state")
 212     if state != "HT_SCAN":
 213         time.sleep(0.1)
 214         state = hapd.get_status_field("state")
 215         if state != "HT_SCAN":
 216             raise Exception("Unexpected interface state - expected HT_SCAN")
 217
 218     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 219     if not ev:
 220         raise Exception("AP setup timed out")
 221
 222     state = hapd.get_status_field("state")
 223     if state != "ENABLED":
 224         raise Exception("Unexpected interface state - expected ENABLED")
 225
 226     freq = hapd.get_status_field("freq")
 227     if freq != "2432":
 228         raise Exception("Unexpected frequency: " + freq)
 229     pri = hapd.get_status_field("channel")
 230     if pri != "5":
 231         raise Exception("Unexpected primary channel: " + pri)
 232     sec = hapd.get_status_field("secondary_channel")
 233     if sec != "0":
 234         raise Exception("Unexpected secondary channel: " + sec)
 235
 236     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 237
 238 @remote_compatible
 239 def test_ap_ht40_scan_ht20_conflict(dev, apdev):
 240     """HT40 co-ex scan conflict with HT 20 MHz AP"""
 241     clear_scan_cache(apdev[0])
 242     params = { "ssid": "ht-20",
 243                "channel": "7", "ieee80211n": "1" }
 244     hostapd.add_ap(apdev[1], params)
 245
 246     params = { "ssid": "test-ht40",
 247                "channel": "5",
 248                "ht_capab": "[HT40-]"}
 249     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 250
 251     state = hapd.get_status_field("state")
 252     if state != "HT_SCAN":
 253         time.sleep(0.1)
 254         state = hapd.get_status_field("state")
 255         if state != "HT_SCAN":
 256             raise Exception("Unexpected interface state - expected HT_SCAN")
 257
 258     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 259     if not ev:
 260         raise Exception("AP setup timed out")
 261
 262     state = hapd.get_status_field("state")
 263     if state != "ENABLED":
 264         raise Exception("Unexpected interface state - expected ENABLED")
 265
 266     freq = hapd.get_status_field("freq")
 267     if freq != "2432":
 268         raise Exception("Unexpected frequency: " + freq)
 269     pri = hapd.get_status_field("channel")
 270     if pri != "5":
 271         raise Exception("Unexpected primary channel: " + pri)
 272     sec = hapd.get_status_field("secondary_channel")
 273     if sec != "0":
 274         raise Exception("Unexpected secondary channel: " + sec)
 275
 276     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 277
 278 def test_ap_ht40_scan_intolerant(dev, apdev):
 279     """HT40 co-ex scan finding an AP advertising 40 MHz intolerant"""
 280     clear_scan_cache(apdev[0])
 281     params = { "ssid": "another-bss",
 282                "channel": "1",
 283                "ht_capab": "[40-INTOLERANT]" }
 284     hostapd.add_ap(apdev[1], params)
 285
 286     params = { "ssid": "test-ht40",
 287                "channel": "1",
 288                "ht_capab": "[HT40+]"}
 289     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 290
 291     state = hapd.get_status_field("state")
 292     if state != "HT_SCAN":
 293         time.sleep(0.1)
 294         state = hapd.get_status_field("state")
 295         if state != "HT_SCAN":
 296             raise Exception("Unexpected interface state - expected HT_SCAN")
 297
 298     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 299     if not ev:
 300         raise Exception("AP setup timed out")
 301
 302     state = hapd.get_status_field("state")
 303     if state != "ENABLED":
 304         raise Exception("Unexpected interface state - expected ENABLED")
 305
 306     freq = hapd.get_status_field("freq")
 307     if freq != "2412":
 308         raise Exception("Unexpected frequency: " + freq)
 309     pri = hapd.get_status_field("channel")
 310     if pri != "1":
 311         raise Exception("Unexpected primary channel: " + pri)
 312     sec = hapd.get_status_field("secondary_channel")
 313     if sec != "0":
 314         raise Exception("Unexpected secondary channel: " + sec)
 315
 316     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 317
 318 def test_ap_ht40_scan_match(dev, apdev):
 319     """HT40 co-ex scan matching configuration"""
 320     clear_scan_cache(apdev[0])
 321     params = { "ssid": "test-ht40",
 322                "channel": "5",
 323                "ht_capab": "[HT40-]"}
 324     hostapd.add_ap(apdev[1], params)
 325
 326     params = { "ssid": "test-ht40",
 327                "channel": "5",
 328                "ht_capab": "[HT40-]"}
 329     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 330
 331     state = hapd.get_status_field("state")
 332     if state != "HT_SCAN":
 333         time.sleep(0.1)
 334         state = hapd.get_status_field("state")
 335         if state != "HT_SCAN":
 336             raise Exception("Unexpected interface state - expected HT_SCAN")
 337
 338     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 339     if not ev:
 340         raise Exception("AP setup timed out")
 341
 342     state = hapd.get_status_field("state")
 343     if state != "ENABLED":
 344         raise Exception("Unexpected interface state - expected ENABLED")
 345
 346     freq = hapd.get_status_field("freq")
 347     if freq != "2432":
 348         raise Exception("Unexpected frequency")
 349     pri = hapd.get_status_field("channel")
 350     if pri != "5":
 351         raise Exception("Unexpected primary channel")
 352     sec = hapd.get_status_field("secondary_channel")
 353     if sec != "-1":
 354         raise Exception("Unexpected secondary channel: " + sec)
 355
 356     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 357
 358 def test_ap_ht40_5ghz_match(dev, apdev):
 359     """HT40 co-ex scan on 5 GHz with matching pri/sec channel"""
 360     clear_scan_cache(apdev[0])
 361     try:
 362         hapd = None
 363         hapd2 = None
 364         params = { "ssid": "test-ht40",
 365                    "hw_mode": "a",
 366                    "channel": "36",
 367                    "country_code": "US",
 368                    "ht_capab": "[HT40+]"}
 369         hapd2 = hostapd.add_ap(apdev[1], params)
 370
 371         params = { "ssid": "test-ht40",
 372                    "hw_mode": "a",
 373                    "channel": "36",
 374                    "ht_capab": "[HT40+]"}
 375         hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 376
 377         state = hapd.get_status_field("state")
 378         if state != "HT_SCAN":
 379             time.sleep(0.1)
 380             state = hapd.get_status_field("state")
 381             if state != "HT_SCAN":
 382                 raise Exception("Unexpected interface state - expected HT_SCAN")
 383
 384         ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 385         if not ev:
 386             raise Exception("AP setup timed out")
 387
 388         state = hapd.get_status_field("state")
 389         if state != "ENABLED":
 390             raise Exception("Unexpected interface state - expected ENABLED")
 391
 392         freq = hapd.get_status_field("freq")
 393         if freq != "5180":
 394             raise Exception("Unexpected frequency")
 395         pri = hapd.get_status_field("channel")
 396         if pri != "36":
 397             raise Exception("Unexpected primary channel")
 398         sec = hapd.get_status_field("secondary_channel")
 399         if sec != "1":
 400             raise Exception("Unexpected secondary channel: " + sec)
 401
 402         dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 403     finally:
 404         dev[0].request("DISCONNECT")
 405         if hapd:
 406             hapd.request("DISABLE")
 407         if hapd2:
 408             hapd2.request("DISABLE")
 409         set_world_reg(apdev[0], apdev[1], dev[0])
 410         dev[0].flush_scan_cache()
 411
 412 def test_ap_ht40_5ghz_switch(dev, apdev):
 413     """HT40 co-ex scan on 5 GHz switching pri/sec channel"""
 414     clear_scan_cache(apdev[0])
 415     try:
 416         hapd = None
 417         hapd2 = None
 418         params = { "ssid": "test-ht40",
 419                    "hw_mode": "a",
 420                    "channel": "36",
 421                    "country_code": "US",
 422                    "ht_capab": "[HT40+]"}
 423         hapd2 = hostapd.add_ap(apdev[1], params)
 424
 425         params = { "ssid": "test-ht40",
 426                    "hw_mode": "a",
 427                    "channel": "40",
 428                    "ht_capab": "[HT40-]"}
 429         hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 430
 431         state = hapd.get_status_field("state")
 432         if state != "HT_SCAN":
 433             time.sleep(0.1)
 434             state = hapd.get_status_field("state")
 435             if state != "HT_SCAN":
 436                 raise Exception("Unexpected interface state - expected HT_SCAN")
 437
 438         ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 439         if not ev:
 440             raise Exception("AP setup timed out")
 441
 442         state = hapd.get_status_field("state")
 443         if state != "ENABLED":
 444             raise Exception("Unexpected interface state - expected ENABLED")
 445
 446         freq = hapd.get_status_field("freq")
 447         if freq != "5180":
 448             raise Exception("Unexpected frequency: " + freq)
 449         pri = hapd.get_status_field("channel")
 450         if pri != "36":
 451             raise Exception("Unexpected primary channel: " + pri)
 452         sec = hapd.get_status_field("secondary_channel")
 453         if sec != "1":
 454             raise Exception("Unexpected secondary channel: " + sec)
 455
 456         dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 457     finally:
 458         dev[0].request("DISCONNECT")
 459         if hapd:
 460             hapd.request("DISABLE")
 461         if hapd2:
 462             hapd2.request("DISABLE")
 463         set_world_reg(apdev[0], apdev[1], dev[0])
 464
 465 def test_ap_ht40_5ghz_switch2(dev, apdev):
 466     """HT40 co-ex scan on 5 GHz switching pri/sec channel (2)"""
 467     clear_scan_cache(apdev[0])
 468     try:
 469         hapd = None
 470         hapd2 = None
 471         params = { "ssid": "test-ht40",
 472                    "hw_mode": "a",
 473                    "channel": "36",
 474                    "country_code": "US",
 475                    "ht_capab": "[HT40+]"}
 476         hapd2 = hostapd.add_ap(apdev[1], params)
 477
 478         id = dev[0].add_network()
 479         dev[0].set_network(id, "mode", "2")
 480         dev[0].set_network_quoted(id, "ssid", "wpas-ap-open")
 481         dev[0].set_network(id, "key_mgmt", "NONE")
 482         dev[0].set_network(id, "frequency", "5200")
 483         dev[0].set_network(id, "scan_freq", "5200")
 484         dev[0].select_network(id)
 485         time.sleep(1)
 486
 487         params = { "ssid": "test-ht40",
 488                    "hw_mode": "a",
 489                    "channel": "40",
 490                    "ht_capab": "[HT40-]"}
 491         hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 492
 493         state = hapd.get_status_field("state")
 494         if state != "HT_SCAN":
 495             time.sleep(0.1)
 496             state = hapd.get_status_field("state")
 497             if state != "HT_SCAN":
 498                 raise Exception("Unexpected interface state - expected HT_SCAN")
 499
 500         ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
 501         if not ev:
 502             raise Exception("AP setup timed out")
 503
 504         state = hapd.get_status_field("state")
 505         if state != "ENABLED":
 506             raise Exception("Unexpected interface state - expected ENABLED")
 507
 508         freq = hapd.get_status_field("freq")
 509         if freq != "5180":
 510             raise Exception("Unexpected frequency: " + freq)
 511         pri = hapd.get_status_field("channel")
 512         if pri != "36":
 513             raise Exception("Unexpected primary channel: " + pri)
 514         sec = hapd.get_status_field("secondary_channel")
 515         if sec != "1":
 516             raise Exception("Unexpected secondary channel: " + sec)
 517
 518         dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
 519     finally:
 520         dev[0].request("DISCONNECT")
 521         if hapd:
 522             hapd.request("DISABLE")
 523         if hapd2:
 524             hapd2.request("DISABLE")
 525         set_world_reg(apdev[0], apdev[1], dev[0])
 526         dev[0].flush_scan_cache()
 527
 528 def test_obss_scan(dev, apdev):
 529     """Overlapping BSS scan request"""
 530     params = { "ssid": "obss-scan",
 531                "channel": "6",
 532                "ht_capab": "[HT40-]",
 533                "obss_interval": "10" }
 534     hapd = hostapd.add_ap(apdev[0], params)
 535
 536     params = { "ssid": "another-bss",
 537                "channel": "9",
 538                "ieee80211n": "0" }
 539     hostapd.add_ap(apdev[1], params)
 540
 541     dev[0].connect("obss-scan", key_mgmt="NONE", scan_freq="2437")
 542     hapd.set("ext_mgmt_frame_handling", "1")
 543     logger.info("Waiting for OBSS scan to occur")
 544     ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=15)
 545     if ev is None:
 546         raise Exception("Timed out while waiting for OBSS scan to start")
 547     ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=10)
 548     if ev is None:
 549         raise Exception("Timed out while waiting for OBSS scan results")
 550     received = False
 551     for i in range(0, 4):
 552         frame = hapd.mgmt_rx(timeout=5)
 553         if frame is None:
 554             raise Exception("MGMT RX wait timed out")
 555         if frame['subtype'] != 13:
 556             continue
 557         payload = frame['payload']
 558         if len(payload) < 3:
 559             continue
 560         (category, action, ie) = struct.unpack('BBB', payload[0:3])
 561         if category != 4:
 562             continue
 563         if action != 0:
 564             continue
 565         if ie == 72:
 566             logger.info("20/40 BSS Coexistence report received")
 567             received = True
 568             break
 569     if not received:
 570         raise Exception("20/40 BSS Coexistence report not seen")
 571
 572 def test_obss_scan_40_intolerant(dev, apdev):
 573     """Overlapping BSS scan request with 40 MHz intolerant AP"""
 574     params = { "ssid": "obss-scan",
 575                "channel": "6",
 576                "ht_capab": "[HT40-]",
 577                "obss_interval": "10" }
 578     hapd = hostapd.add_ap(apdev[0], params)
 579
 580     params = { "ssid": "another-bss",
 581                "channel": "7",
 582                "ht_capab": "[40-INTOLERANT]" }
 583     hostapd.add_ap(apdev[1], params)
 584
 585     dev[0].connect("obss-scan", key_mgmt="NONE", scan_freq="2437")
 586     hapd.set("ext_mgmt_frame_handling", "1")
 587     logger.info("Waiting for OBSS scan to occur")
 588     ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=15)
 589     if ev is None:
 590         raise Exception("Timed out while waiting for OBSS scan to start")
 591     ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=10)
 592     if ev is None:
 593         raise Exception("Timed out while waiting for OBSS scan results")
 594     received = False
 595     for i in range(0, 4):
 596         frame = hapd.mgmt_rx(timeout=5)
 597         if frame is None:
 598             raise Exception("MGMT RX wait timed out")
 599         if frame['subtype'] != 13:
 600             continue
 601         payload = frame['payload']
 602         if len(payload) < 3:
 603             continue
 604         (category, action, ie) = struct.unpack('BBB', payload[0:3])
 605         if category != 4:
 606             continue
 607         if action != 0:
 608             continue
 609         if ie == 72:
 610             logger.info("20/40 BSS Coexistence report received")
 611             received = True
 612             break
 613     if not received:
 614         raise Exception("20/40 BSS Coexistence report not seen")
 615
 616 def test_obss_coex_report_handling(dev, apdev):
 617     """Overlapping BSS scan report handling with obss_interval=0"""
 618     clear_scan_cache(apdev[0])
 619     params = { "ssid": "obss-scan",
 620                "channel": "6",
 621                "ht_capab": "[HT40-]" }
 622     hapd = hostapd.add_ap(apdev[0], params)
 623     bssid = apdev[0]['bssid']
 624     dev[0].connect("obss-scan", key_mgmt="NONE", scan_freq="2437")
 625
 626     sec = hapd.get_status_field("secondary_channel")
 627     if sec != "-1":
 628         raise Exception("AP is not using 40 MHz channel")
 629
 630     # 20/40 MHz co-ex report tests: number of invalid reports and a valid report
 631     # that forces 20 MHz channel.
 632     tests = [ '0400', '040048', '04004801', '0400480000', '0400490100',
 633               '040048ff0000', '04004801ff49ff00', '04004801004900',
 634               '0400480100490101', '0400480100490201ff',
 635               '040048010449020005' ]
 636     for msg in tests:
 637         req = "MGMT_TX {} {} freq=2437 action={}".format(bssid, bssid, msg)
 638         if "OK" not in dev[0].request(req):
 639             raise Exception("Could not send management frame")
 640     time.sleep(0.5)
 641     sec = hapd.get_status_field("secondary_channel")
 642     if sec != "0":
 643         raise Exception("AP did not move to 20 MHz channel")
 644
 645 def test_obss_coex_report_handling1(dev, apdev):
 646     """Overlapping BSS scan report handling with obss_interval=1"""
 647     clear_scan_cache(apdev[0])
 648     params = { "ssid": "obss-scan",
 649                "channel": "6",
 650                "ht_capab": "[HT40+]",
 651                "obss_interval": "1" }
 652     hapd = hostapd.add_ap(apdev[0], params)
 653     bssid = apdev[0]['bssid']
 654     dev[0].connect("obss-scan", key_mgmt="NONE", scan_freq="2437")
 655
 656     sec = hapd.get_status_field("secondary_channel")
 657     if sec != "1":
 658         raise Exception("AP is not using 40 MHz channel")
 659
 660     # 20/40 MHz co-ex report forcing 20 MHz channel
 661     msg = '040048010449020005'
 662     req = "MGMT_TX {} {} freq=2437 action={}".format(bssid, bssid, msg)
 663     if "OK" not in dev[0].request(req):
 664         raise Exception("Could not send management frame")
 665     time.sleep(0.5)
 666     sec = hapd.get_status_field("secondary_channel")
 667     if sec != "0":
 668         raise Exception("AP did not move to 20 MHz channel")
 669
 670     # No 20/40 MHz co-ex reports forcing 20 MHz channel during next interval
 671     for i in range(20):
 672         sec = hapd.get_status_field("secondary_channel")
 673         if sec == "1":
 674             break
 675         time.sleep(0.5)
 676     if sec != "1":
 677         raise Exception("AP did not return to 40 MHz channel")
 678
 679 def test_olbc(dev, apdev):
 680     """OLBC detection"""
 681     params = { "ssid": "test-olbc",
 682                "channel": "6",
 683                "ht_capab": "[HT40-]",
 684                "ap_table_expiration_time": "2" }
 685     hapd = hostapd.add_ap(apdev[0], params)
 686     status = hapd.get_status()
 687     if status['olbc'] != '0' or status['olbc_ht'] != '0':
 688         raise Exception("Unexpected OLBC information")
 689
 690     params = { "ssid": "olbc-ap",
 691                "hw_mode": "b",
 692                "channel": "6",
 693                "wmm_enabled": "0" }
 694     hostapd.add_ap(apdev[1], params)
 695     time.sleep(0.5)
 696     status = hapd.get_status()
 697     if status['olbc'] != '1' or status['olbc_ht'] != '1':
 698         raise Exception("Missing OLBC information")
 699
 700     hostapd.remove_bss(apdev[1])
 701
 702     logger.info("Waiting for OLBC state to time out")
 703     cleared = False
 704     for i in range(0, 15):
 705         time.sleep(1)
 706         status = hapd.get_status()
 707         if status['olbc'] == '0' and status['olbc_ht'] == '0':
 708             cleared = True
 709             break
 710     if not cleared:
 711         raise Exception("OLBC state did nto time out")
 712
 713 def test_olbc_table_limit(dev, apdev):
 714     """OLBC AP table size limit"""
 715     ifname1 = apdev[0]['ifname']
 716     ifname2 = apdev[0]['ifname'] + '-2'
 717     ifname3 = apdev[0]['ifname'] + '-3'
 718     hostapd.add_bss(apdev[0], ifname1, 'bss-1.conf')
 719     hostapd.add_bss(apdev[0], ifname2, 'bss-2.conf')
 720     hostapd.add_bss(apdev[0], ifname3, 'bss-3.conf')
 721
 722     params = { "ssid": "test-olbc",
 723                "channel": "1",
 724                "ap_table_max_size": "2" }
 725     hapd = hostapd.add_ap(apdev[1], params)
 726
 727     time.sleep(0.3)
 728     with alloc_fail(hapd, 1, "ap_list_process_beacon"):
 729         time.sleep(0.3)
 730     hapd.set("ap_table_max_size", "1")
 731     time.sleep(0.3)
 732     hapd.set("ap_table_max_size", "0")
 733     time.sleep(0.3)
 734
 735 def test_olbc_5ghz(dev, apdev):
 736     """OLBC detection on 5 GHz"""
 737     try:
 738         hapd = None
 739         hapd2 = None
 740         params = { "ssid": "test-olbc",
 741                    "country_code": "FI",
 742                    "hw_mode": "a",
 743                    "channel": "36",
 744                    "ht_capab": "[HT40+]" }
 745         hapd = hostapd.add_ap(apdev[0], params)
 746         status = hapd.get_status()
 747         if status['olbc'] != '0' or status['olbc_ht'] != '0':
 748             raise Exception("Unexpected OLBC information")
 749
 750         params = { "ssid": "olbc-ap",
 751                    "country_code": "FI",
 752                    "hw_mode": "a",
 753                    "channel": "36",
 754                    "ieee80211n": "0",
 755                    "wmm_enabled": "0" }
 756         hapd2 = hostapd.add_ap(apdev[1], params)
 757         found = False
 758         for i in range(20):
 759             time.sleep(0.1)
 760             status = hapd.get_status()
 761             logger.debug('olbc_ht: ' + status['olbc_ht'])
 762             if status['olbc_ht'] == '1':
 763                 found = True
 764                 break
 765         if not found:
 766             raise Exception("Missing OLBC information")
 767     finally:
 768         if hapd:
 769             hapd.request("DISABLE")
 770         if hapd2:
 771             hapd2.request("DISABLE")
 772         set_world_reg(apdev[0], apdev[1], None)
 773
 774 def test_ap_require_ht(dev, apdev):
 775     """Require HT"""
 776     params = { "ssid": "require-ht",
 777                "require_ht": "1" }
 778     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 779
 780     dev[1].connect("require-ht", key_mgmt="NONE", scan_freq="2412",
 781                    disable_ht="1", wait_connect=False)
 782     dev[0].connect("require-ht", key_mgmt="NONE", scan_freq="2412")
 783     ev = dev[1].wait_event(["CTRL-EVENT-ASSOC-REJECT"])
 784     dev[1].request("DISCONNECT")
 785     if ev is None:
 786         raise Exception("Association rejection timed out")
 787     if "status_code=27" not in ev:
 788         raise Exception("Unexpected rejection status code")
 789     dev[2].connect("require-ht", key_mgmt="NONE", scan_freq="2412",
 790                    ht_mcs="0x01 00 00 00 00 00 00 00 00 00",
 791                    disable_max_amsdu="1", ampdu_factor="2",
 792                    ampdu_density="1", disable_ht40="1", disable_sgi="1",
 793                    disable_ldpc="1")
 794
 795 @remote_compatible
 796 def test_ap_require_ht_limited_rates(dev, apdev):
 797     """Require HT with limited supported rates"""
 798     params = { "ssid": "require-ht",
 799                "supported_rates": "60 120 240 360 480 540",
 800                "require_ht": "1" }
 801     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
 802
 803     dev[1].connect("require-ht", key_mgmt="NONE", scan_freq="2412",
 804                    disable_ht="1", wait_connect=False)
 805     dev[0].connect("require-ht", key_mgmt="NONE", scan_freq="2412")
 806     ev = dev[1].wait_event(["CTRL-EVENT-ASSOC-REJECT"])
 807     dev[1].request("DISCONNECT")
 808     if ev is None:
 809         raise Exception("Association rejection timed out")
 810     if "status_code=27" not in ev:
 811         raise Exception("Unexpected rejection status code")
 812
 813 @remote_compatible
 814 def test_ap_ht_capab_not_supported(dev, apdev):
 815     """HT configuration with driver not supporting all ht_capab entries"""
 816     params = { "ssid": "test-ht40",
 817                "channel": "5",
 818                "ht_capab": "[HT40-][LDPC][SMPS-STATIC][SMPS-DYNAMIC][GF][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1][RX-STBC12][RX-STBC123][DELAYED-BA][MAX-AMSDU-7935][DSSS_CCK-40][LSIG-TXOP-PROT]"}
 819     hapd = hostapd.add_ap(apdev[0], params, no_enable=True)
 820     if "FAIL" not in hapd.request("ENABLE"):
 821         raise Exception("Unexpected ENABLE success")
 822
 823 def test_ap_ht_40mhz_intolerant_sta(dev, apdev):
 824     """Associated STA indicating 40 MHz intolerant"""
 825     clear_scan_cache(apdev[0])
 826     params = { "ssid": "intolerant",
 827                "channel": "6",
 828                "ht_capab": "[HT40-]" }
 829     hapd = hostapd.add_ap(apdev[0], params)
 830     if hapd.get_status_field("num_sta_ht40_intolerant") != "0":
 831         raise Exception("Unexpected num_sta_ht40_intolerant value")
 832     if hapd.get_status_field("secondary_channel") != "-1":
 833         raise Exception("Unexpected secondary_channel")
 834
 835     dev[0].connect("intolerant", key_mgmt="NONE", scan_freq="2437")
 836     if hapd.get_status_field("num_sta_ht40_intolerant") != "0":
 837         raise Exception("Unexpected num_sta_ht40_intolerant value")
 838     if hapd.get_status_field("secondary_channel") != "-1":
 839         raise Exception("Unexpected secondary_channel")
 840
 841     dev[2].connect("intolerant", key_mgmt="NONE", scan_freq="2437",
 842                    ht40_intolerant="1")
 843     time.sleep(1)
 844     if hapd.get_status_field("num_sta_ht40_intolerant") != "1":
 845         raise Exception("Unexpected num_sta_ht40_intolerant value (expected 1)")
 846     if hapd.get_status_field("secondary_channel") != "0":
 847         raise Exception("Unexpected secondary_channel (did not disable 40 MHz)")
 848
 849     dev[2].request("DISCONNECT")
 850     time.sleep(1)
 851     if hapd.get_status_field("num_sta_ht40_intolerant") != "0":
 852         raise Exception("Unexpected num_sta_ht40_intolerant value (expected 0)")
 853     if hapd.get_status_field("secondary_channel") != "-1":
 854         raise Exception("Unexpected secondary_channel (did not re-enable 40 MHz)")
 855
 856 def test_ap_ht_40mhz_intolerant_ap(dev, apdev):
 857     """Associated STA reports 40 MHz intolerant AP after association"""
 858     clear_scan_cache(apdev[0])
 859     params = { "ssid": "ht",
 860                "channel": "6",
 861                "ht_capab": "[HT40-]",
 862                "obss_interval": "3" }
 863     hapd = hostapd.add_ap(apdev[0], params)
 864
 865     dev[0].connect("ht", key_mgmt="NONE", scan_freq="2437")
 866
 867     if hapd.get_status_field("secondary_channel") != "-1":
 868         raise Exception("Unexpected secondary channel information")
 869
 870     logger.info("Start 40 MHz intolerant AP")
 871     params = { "ssid": "intolerant",
 872                "channel": "5",
 873                "ht_capab": "[40-INTOLERANT]" }
 874     hapd2 = hostapd.add_ap(apdev[1], params)
 875
 876     logger.info("Waiting for co-ex report from STA")
 877     ok = False
 878     for i in range(0, 20):
 879         time.sleep(1)
 880         if hapd.get_status_field("secondary_channel") == "0":
 881             logger.info("AP moved to 20 MHz channel")
 882             ok = True
 883             break
 884     if not ok:
 885         raise Exception("AP did not move to 20 MHz channel")
 886
 887     if "OK" not in hapd2.request("DISABLE"):
 888         raise Exception("Failed to disable 40 MHz intolerant AP")
 889
 890     # make sure the intolerant AP disappears from scan results more quickly
 891     dev[0].scan(type="ONLY", freq="2432", only_new=True)
 892     dev[0].scan(type="ONLY", freq="2432", only_new=True)
 893     dev[0].dump_monitor()
 894
 895     logger.info("Waiting for AP to move back to 40 MHz channel")
 896     ok = False
 897     for i in range(0, 30):
 898         time.sleep(1)
 899         if hapd.get_status_field("secondary_channel") == "-1":
 900             logger.info("AP moved to 40 MHz channel")
 901             ok = True
 902             break
 903     if not ok:
 904         raise Exception("AP did not move to 40 MHz channel")
 905
 906 def test_ap_ht40_csa(dev, apdev):
 907     """HT with 40 MHz channel width and CSA"""
 908     csa_supported(dev[0])
 909     try:
 910         hapd = None
 911         params = { "ssid": "ht",
 912                    "country_code": "US",
 913                    "hw_mode": "a",
 914                    "channel": "36",
 915                    "ht_capab": "[HT40+]",
 916                    "ieee80211n": "1" }
 917         hapd = hostapd.add_ap(apdev[0], params)
 918
 919         dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180")
 920         hwsim_utils.test_connectivity(dev[0], hapd)
 921
 922         hapd.request("CHAN_SWITCH 5 5200 ht sec_channel_offset=-1 bandwidth=40")
 923         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
 924         if ev is None:
 925             raise Exception("CSA finished event timed out")
 926         if "freq=5200" not in ev:
 927             raise Exception("Unexpected channel in CSA finished event")
 928         ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
 929         if ev is not None:
 930             raise Exception("Unexpected STA disconnection during CSA")
 931         hwsim_utils.test_connectivity(dev[0], hapd)
 932
 933         hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40")
 934         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
 935         if ev is None:
 936             raise Exception("CSA finished event timed out")
 937         if "freq=5180" not in ev:
 938             raise Exception("Unexpected channel in CSA finished event")
 939         ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
 940         if ev is not None:
 941             raise Exception("Unexpected STA disconnection during CSA")
 942         hwsim_utils.test_connectivity(dev[0], hapd)
 943     finally:
 944         dev[0].request("DISCONNECT")
 945         if hapd:
 946             hapd.request("DISABLE")
 947         set_world_reg(apdev[0], None, dev[0])
 948         dev[0].flush_scan_cache()
 949
 950 def test_ap_ht40_csa2(dev, apdev):
 951     """HT with 40 MHz channel width and CSA"""
 952     csa_supported(dev[0])
 953     try:
 954         hapd = None
 955         params = { "ssid": "ht",
 956                    "country_code": "US",
 957                    "hw_mode": "a",
 958                    "channel": "36",
 959                    "ht_capab": "[HT40+]",
 960                    "ieee80211n": "1" }
 961         hapd = hostapd.add_ap(apdev[0], params)
 962
 963         dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180")
 964         hwsim_utils.test_connectivity(dev[0], hapd)
 965
 966         hapd.request("CHAN_SWITCH 5 5220 ht sec_channel_offset=1 bandwidth=40")
 967         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
 968         if ev is None:
 969             raise Exception("CSA finished event timed out")
 970         if "freq=5220" not in ev:
 971             raise Exception("Unexpected channel in CSA finished event")
 972         ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
 973         if ev is not None:
 974             raise Exception("Unexpected STA disconnection during CSA")
 975         hwsim_utils.test_connectivity(dev[0], hapd)
 976
 977         hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40")
 978         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
 979         if ev is None:
 980             raise Exception("CSA finished event timed out")
 981         if "freq=5180" not in ev:
 982             raise Exception("Unexpected channel in CSA finished event")
 983         ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
 984         if ev is not None:
 985             raise Exception("Unexpected STA disconnection during CSA")
 986         hwsim_utils.test_connectivity(dev[0], hapd)
 987     finally:
 988         dev[0].request("DISCONNECT")
 989         if hapd:
 990             hapd.request("DISABLE")
 991         set_world_reg(apdev[0], None, dev[0])
 992         dev[0].flush_scan_cache()
 993
 994 def test_ap_ht40_csa3(dev, apdev):
 995     """HT with 40 MHz channel width and CSA"""
 996     csa_supported(dev[0])
 997     try:
 998         hapd = None
 999         params = { "ssid": "ht",
1000                    "country_code": "US",
1001                    "hw_mode": "a",
1002                    "channel": "36",
1003                    "ht_capab": "[HT40+]",
1004                    "ieee80211n": "1" }
1005         hapd = hostapd.add_ap(apdev[0], params)
1006
1007         dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180")
1008         hwsim_utils.test_connectivity(dev[0], hapd)
1009
1010         hapd.request("CHAN_SWITCH 5 5240 ht sec_channel_offset=-1 bandwidth=40")
1011         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
1012         if ev is None:
1013             raise Exception("CSA finished event timed out")
1014         if "freq=5240" not in ev:
1015             raise Exception("Unexpected channel in CSA finished event")
1016         ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
1017         if ev is not None:
1018             raise Exception("Unexpected STA disconnection during CSA")
1019         hwsim_utils.test_connectivity(dev[0], hapd)
1020
1021         hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40")
1022         ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
1023         if ev is None:
1024             raise Exception("CSA finished event timed out")
1025         if "freq=5180" not in ev:
1026             raise Exception("Unexpected channel in CSA finished event")
1027         ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
1028         if ev is not None:
1029             raise Exception("Unexpected STA disconnection during CSA")
1030         hwsim_utils.test_connectivity(dev[0], hapd)
1031     finally:
1032         dev[0].request("DISCONNECT")
1033         if hapd:
1034             hapd.request("DISABLE")
1035         set_world_reg(apdev[0], None, dev[0])
1036         dev[0].flush_scan_cache()
1037
1038 @remote_compatible
1039 def test_ap_ht_smps(dev, apdev):
1040     """SMPS AP configuration options"""
1041     params = { "ssid": "ht1", "ht_capab": "[SMPS-STATIC]" }
1042     try:
1043         hapd = hostapd.add_ap(apdev[0], params)
1044     except:
1045         raise HwsimSkip("Assume mac80211_hwsim was not recent enough to support SMPS")
1046     params = { "ssid": "ht2", "ht_capab": "[SMPS-DYNAMIC]" }
1047     hapd2 = hostapd.add_ap(apdev[1], params)
1048
1049     dev[0].connect("ht1", key_mgmt="NONE", scan_freq="2412")
1050     dev[1].connect("ht2", key_mgmt="NONE", scan_freq="2412")
1051     hwsim_utils.test_connectivity(dev[0], hapd)
1052     hwsim_utils.test_connectivity(dev[1], hapd2)
1053
1054 @remote_compatible
1055 def test_prefer_ht20(dev, apdev):
1056     """Preference on HT20 over no-HT"""
1057     params = { "ssid": "test",
1058                "channel": "1",
1059                "ieee80211n": "0" }
1060     hapd = hostapd.add_ap(apdev[0], params)
1061     bssid = apdev[0]['bssid']
1062     params = { "ssid": "test",
1063                "channel": "1",
1064                "ieee80211n": "1" }
1065     hapd2 = hostapd.add_ap(apdev[1], params)
1066     bssid2 = apdev[1]['bssid']
1067
1068     dev[0].scan_for_bss(bssid, freq=2412)
1069     dev[0].scan_for_bss(bssid2, freq=2412)
1070     dev[0].connect("test", key_mgmt="NONE", scan_freq="2412")
1071     if dev[0].get_status_field('bssid') != bssid2:
1072         raise Exception("Unexpected BSS selected")
1073
1074     est = dev[0].get_bss(bssid)['est_throughput']
1075     if est != "54000":
1076         raise Exception("Unexpected BSS0 est_throughput: " + est)
1077
1078     est = dev[0].get_bss(bssid2)['est_throughput']
1079     if est != "65000":
1080         raise Exception("Unexpected BSS1 est_throughput: " + est)
1081
1082 def test_prefer_ht40(dev, apdev):
1083     """Preference on HT40 over HT20"""
1084     params = { "ssid": "test",
1085                "channel": "1",
1086                "ieee80211n": "1" }
1087     hapd = hostapd.add_ap(apdev[0], params)
1088     bssid = apdev[0]['bssid']
1089     params = { "ssid": "test",
1090                "channel": "1",
1091                "ieee80211n": "1",
1092                "ht_capab": "[HT40+]" }
1093     hapd2 = hostapd.add_ap(apdev[1], params)
1094     bssid2 = apdev[1]['bssid']
1095
1096     dev[0].scan_for_bss(bssid, freq=2412)
1097     dev[0].scan_for_bss(bssid2, freq=2412)
1098     dev[0].connect("test", key_mgmt="NONE", scan_freq="2412")
1099     if dev[0].get_status_field('bssid') != bssid2:
1100         raise Exception("Unexpected BSS selected")
1101
1102     est = dev[0].get_bss(bssid)['est_throughput']
1103     if est != "65000":
1104         raise Exception("Unexpected BSS0 est_throughput: " + est)
1105
1106     est = dev[0].get_bss(bssid2)['est_throughput']
1107     if est != "135000":
1108         raise Exception("Unexpected BSS1 est_throughput: " + est)
1109
1110 @remote_compatible
1111 def test_prefer_ht20_during_roam(dev, apdev):
1112     """Preference on HT20 over no-HT in roaming consideration"""
1113     params = { "ssid": "test",
1114                "channel": "1",
1115                "ieee80211n": "0" }
1116     hapd = hostapd.add_ap(apdev[0], params)
1117     bssid = apdev[0]['bssid']
1118
1119     dev[0].scan_for_bss(bssid, freq=2412)
1120     dev[0].connect("test", key_mgmt="NONE", scan_freq="2412")
1121
1122     params = { "ssid": "test",
1123                "channel": "1",
1124                "ieee80211n": "1" }
1125     hapd2 = hostapd.add_ap(apdev[1], params)
1126     bssid2 = apdev[1]['bssid']
1127     dev[0].scan_for_bss(bssid2, freq=2412)
1128     dev[0].scan(freq=2412)
1129     dev[0].wait_connected()
1130
1131     if dev[0].get_status_field('bssid') != bssid2:
1132         raise Exception("Unexpected BSS selected")
1133
1134 @remote_compatible
1135 def test_ap_ht40_5ghz_invalid_pair(dev, apdev):
1136     """HT40 on 5 GHz with invalid channel pair"""
1137     clear_scan_cache(apdev[0])
1138     try:
1139         params = { "ssid": "test-ht40",
1140                    "hw_mode": "a",
1141                    "channel": "40",
1142                    "country_code": "US",
1143                    "ht_capab": "[HT40+]"}
1144         hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
1145         ev = hapd.wait_event(["AP-DISABLED", "AP-ENABLED"], timeout=10)
1146         if not ev:
1147             raise Exception("AP setup failure timed out")
1148         if "AP-ENABLED" in ev:
1149             sec = hapd.get_status_field("secondary_channel")
1150             if sec != "0":
1151                 raise Exception("Invalid 40 MHz channel accepted")
1152     finally:
1153         set_world_reg(apdev[0], None, None)
1154
1155 @remote_compatible
1156 def test_ap_ht40_5ghz_disabled_sec(dev, apdev):
1157     """HT40 on 5 GHz with disabled secondary channel"""
1158     clear_scan_cache(apdev[0])
1159     try:
1160         params = { "ssid": "test-ht40",
1161                    "hw_mode": "a",
1162                    "channel": "48",
1163                    "country_code": "US",
1164                    "ht_capab": "[HT40+]"}
1165         hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
1166         ev = hapd.wait_event(["AP-DISABLED", "AP-ENABLED"], timeout=10)
1167         if not ev:
1168             raise Exception("AP setup failure timed out")
1169         if "AP-ENABLED" in ev:
1170             sec = hapd.get_status_field("secondary_channel")
1171             if sec != "0":
1172                 raise Exception("Invalid 40 MHz channel accepted")
1173     finally:
1174         set_world_reg(apdev[0], None, None)
1175
1176 def test_ap_ht40_scan_broken_ap(dev, apdev):
1177     """HT40 co-ex scan and broken legacy/HT AP"""
1178     clear_scan_cache(apdev[0])
1179
1180     # Broken AP: Include HT Capabilities element but not HT Operation element
1181     params = { "ssid": "legacy-20",
1182                "channel": "7", "ieee80211n": "0",
1183                "wmm_enabled": "1",
1184                "vendor_elements": "2d1a0e001bffff000000000000000000000100000000000000000000" }
1185     hapd2 = hostapd.add_ap(apdev[1], params)
1186
1187     params = { "ssid": "test-ht40",
1188                "channel": "5",
1189                "ht_capab": "[HT40-]"}
1190     hapd = hostapd.add_ap(apdev[0], params, wait_enabled=False)
1191
1192     state = hapd.get_status_field("state")
1193     if state != "HT_SCAN":
1194         time.sleep(0.1)
1195         state = hapd.get_status_field("state")
1196         if state != "HT_SCAN":
1197             raise Exception("Unexpected interface state - expected HT_SCAN")
1198
1199     ev = hapd.wait_event(["AP-ENABLED"], timeout=10)
1200     if not ev:
1201         raise Exception("AP setup timed out")
1202
1203     state = hapd.get_status_field("state")
1204     if state != "ENABLED":
1205         raise Exception("Unexpected interface state - expected ENABLED")
1206
1207     freq = hapd.get_status_field("freq")
1208     if freq != "2432":
1209         raise Exception("Unexpected frequency: " + freq)
1210     pri = hapd.get_status_field("channel")
1211     if pri != "5":
1212         raise Exception("Unexpected primary channel: " + pri)
1213     sec = hapd.get_status_field("secondary_channel")
1214     if sec != "-1":
1215         raise Exception("Unexpected secondary channel: " + sec)
1216
1217     dev[0].connect("test-ht40", key_mgmt="NONE", scan_freq=freq)
1218     dev[1].connect("legacy-20", key_mgmt="NONE", scan_freq="2442")
1219     hwsim_utils.test_connectivity(dev[0], hapd)
1220     hwsim_utils.test_connectivity(dev[1], hapd2)