tests/hwsim/test_p2p_channel.py

   1 # P2P channel selection test cases
   2 # Copyright (c) 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 import logging
   8 logger = logging.getLogger()
   9 import os
  10 import subprocess
  11 import time
  12
  13 import hostapd
  14 import hwsim_utils
  15 from wpasupplicant import WpaSupplicant
  16 from hwsim import HWSimRadio
  17 from test_p2p_grpform import go_neg_pin_authorized
  18 from test_p2p_grpform import check_grpform_results
  19 from test_p2p_grpform import remove_group
  20 from test_p2p_grpform import go_neg_pbc
  21 from test_p2p_autogo import autogo
  22
  23 def set_country(country):
  24     subprocess.call(['sudo', 'iw', 'reg', 'set', country])
  25     time.sleep(0.1)
  26
  27 def test_p2p_channel_5ghz(dev):
  28     """P2P group formation with 5 GHz preference"""
  29     try:
  30         set_country("US")
  31         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
  32                                                r_dev=dev[1], r_intent=0,
  33                                                test_data=False)
  34         check_grpform_results(i_res, r_res)
  35         freq = int(i_res['freq'])
  36         if freq < 5000:
  37             raise Exception("Unexpected channel %d MHz - did not follow 5 GHz preference" % freq)
  38         remove_group(dev[0], dev[1])
  39     finally:
  40         set_country("00")
  41
  42 def test_p2p_channel_5ghz_no_vht(dev):
  43     """P2P group formation with 5 GHz preference when VHT channels are disallowed"""
  44     try:
  45         set_country("US")
  46         dev[0].request("P2P_SET disallow_freq 5180-5240")
  47         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
  48                                                r_dev=dev[1], r_intent=0,
  49                                                test_data=False)
  50         check_grpform_results(i_res, r_res)
  51         freq = int(i_res['freq'])
  52         if freq < 5000:
  53             raise Exception("Unexpected channel %d MHz - did not follow 5 GHz preference" % freq)
  54         remove_group(dev[0], dev[1])
  55     finally:
  56         set_country("00")
  57         dev[0].request("P2P_SET disallow_freq ")
  58
  59 def test_p2p_channel_random_social(dev):
  60     """P2P group formation with 5 GHz preference but all 5 GHz channels disabled"""
  61     try:
  62         set_country("US")
  63         dev[0].request("SET p2p_oper_channel 11")
  64         dev[0].request("P2P_SET disallow_freq 5000-6000,2462")
  65         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
  66                                                r_dev=dev[1], r_intent=0,
  67                                                test_data=False)
  68         check_grpform_results(i_res, r_res)
  69         freq = int(i_res['freq'])
  70         if freq not in [ 2412, 2437, 2462 ]:
  71             raise Exception("Unexpected channel %d MHz - did not pick random social channel" % freq)
  72         remove_group(dev[0], dev[1])
  73     finally:
  74         set_country("00")
  75         dev[0].request("P2P_SET disallow_freq ")
  76
  77 def test_p2p_channel_random(dev):
  78     """P2P group formation with 5 GHz preference but all 5 GHz channels and all social channels disabled"""
  79     try:
  80         set_country("US")
  81         dev[0].request("SET p2p_oper_channel 11")
  82         dev[0].request("P2P_SET disallow_freq 5000-6000,2412,2437,2462")
  83         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
  84                                                r_dev=dev[1], r_intent=0,
  85                                                test_data=False)
  86         check_grpform_results(i_res, r_res)
  87         freq = int(i_res['freq'])
  88         if freq > 2500 or freq in [ 2412, 2437, 2462 ]:
  89             raise Exception("Unexpected channel %d MHz" % freq)
  90         remove_group(dev[0], dev[1])
  91     finally:
  92         set_country("00")
  93         dev[0].request("P2P_SET disallow_freq ")
  94
  95 def test_p2p_channel_random_social_with_op_class_change(dev, apdev, params):
  96     """P2P group formation using random social channel with oper class change needed"""
  97     try:
  98         set_country("US")
  99         logger.info("Start group on 5 GHz")
 100         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
 101                                                r_dev=dev[1], r_intent=0,
 102                                                test_data=False)
 103         check_grpform_results(i_res, r_res)
 104         freq = int(i_res['freq'])
 105         if freq < 5000:
 106             raise Exception("Unexpected channel %d MHz - did not pick 5 GHz preference" % freq)
 107         remove_group(dev[0], dev[1])
 108
 109         logger.info("Disable 5 GHz and try to re-start group based on 5 GHz preference")
 110         dev[0].request("SET p2p_oper_reg_class 115")
 111         dev[0].request("SET p2p_oper_channel 36")
 112         dev[0].request("P2P_SET disallow_freq 5000-6000")
 113         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
 114                                                r_dev=dev[1], r_intent=0,
 115                                                test_data=False)
 116         check_grpform_results(i_res, r_res)
 117         freq = int(i_res['freq'])
 118         if freq not in [ 2412, 2437, 2462 ]:
 119             raise Exception("Unexpected channel %d MHz - did not pick random social channel" % freq)
 120         remove_group(dev[0], dev[1])
 121
 122         try:
 123             arg = [ "tshark",
 124                     "-r", os.path.join(params['logdir'], "hwsim0.pcapng"),
 125                     "-Y", "wifi_p2p.public_action.subtype == 0",
 126                     "-V" ]
 127             cmd = subprocess.Popen(arg, stdout=subprocess.PIPE,
 128                                    stderr=open('/dev/null', 'w'))
 129         except Exception, e:
 130             logger.info("Could run run tshark check: " + str(e))
 131             cmd = None
 132             pass
 133
 134         if cmd:
 135             last = None
 136             for l in cmd.stdout.read().splitlines():
 137                 if "Operating Channel:" not in l:
 138                     continue
 139                 last = l
 140             if last is None:
 141                 raise Exception("Could not find GO Negotiation Request")
 142             if "Operating Class 81" not in last:
 143                 raise Exception("Unexpected operating class: " + last.strip())
 144     finally:
 145         set_country("00")
 146         dev[0].request("P2P_SET disallow_freq ")
 147         dev[0].request("SET p2p_oper_reg_class 0")
 148         dev[0].request("SET p2p_oper_channel 0")
 149
 150 def test_p2p_channel_avoid(dev):
 151     """P2P and avoid frequencies driver event"""
 152     try:
 153         set_country("US")
 154         if "OK" not in dev[0].request("DRIVER_EVENT AVOID_FREQUENCIES 5000-6000,2412,2437,2462"):
 155             raise Exception("Could not simulate driver event")
 156         ev = dev[0].wait_event(["CTRL-EVENT-AVOID-FREQ"], timeout=10)
 157         if ev is None:
 158             raise Exception("No CTRL-EVENT-AVOID-FREQ event")
 159         [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
 160                                                r_dev=dev[1], r_intent=0,
 161                                                test_data=False)
 162         check_grpform_results(i_res, r_res)
 163         freq = int(i_res['freq'])
 164         if freq > 2500 or freq in [ 2412, 2437, 2462 ]:
 165             raise Exception("Unexpected channel %d MHz" % freq)
 166
 167         if "OK" not in dev[0].request("DRIVER_EVENT AVOID_FREQUENCIES"):
 168             raise Exception("Could not simulate driver event(2)")
 169         ev = dev[0].wait_event(["CTRL-EVENT-AVOID-FREQ"], timeout=10)
 170         if ev is None:
 171             raise Exception("No CTRL-EVENT-AVOID-FREQ event")
 172         ev = dev[0].wait_event(["P2P-REMOVE-AND-REFORM-GROUP"], timeout=1)
 173         if ev is not None:
 174             raise Exception("Unexpected P2P-REMOVE-AND-REFORM-GROUP event")
 175
 176         if "OK" not in dev[0].request("DRIVER_EVENT AVOID_FREQUENCIES " + str(freq)):
 177             raise Exception("Could not simulate driver event(3)")
 178         ev = dev[0].wait_event(["CTRL-EVENT-AVOID-FREQ"], timeout=10)
 179         if ev is None:
 180             raise Exception("No CTRL-EVENT-AVOID-FREQ event")
 181         ev = dev[0].wait_event(["P2P-REMOVE-AND-REFORM-GROUP"], timeout=10)
 182         if ev is None:
 183             raise Exception("No P2P-REMOVE-AND-REFORM-GROUP event")
 184     finally:
 185         set_country("00")
 186         dev[0].request("DRIVER_EVENT AVOID_FREQUENCIES")
 187
 188 def test_autogo_following_bss(dev, apdev):
 189     """P2P autonomous GO operate on the same channel as station interface"""
 190     if dev[0].get_mcc() > 1:
 191         logger.info("test mode: MCC")
 192
 193     dev[0].request("SET p2p_no_group_iface 0")
 194
 195     channels = { 3 : "2422", 5 : "2432", 9 : "2452" }
 196     for key in channels:
 197         hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid" : 'ap-test',
 198                                                     "channel" : str(key) })
 199         dev[0].connect("ap-test", key_mgmt="NONE",
 200                        scan_freq=str(channels[key]))
 201         res_go = autogo(dev[0])
 202         if res_go['freq'] != channels[key]:
 203             raise Exception("Group operation channel is not the same as on connected station interface")
 204         hwsim_utils.test_connectivity(dev[0], hapd)
 205         dev[0].remove_group(res_go['ifname'])
 206
 207 def test_go_neg_with_bss_connected(dev, apdev):
 208     """P2P channel selection: GO negotiation when station interface is connected"""
 209
 210     dev[0].flush_scan_cache()
 211     dev[1].flush_scan_cache()
 212     dev[0].request("SET p2p_no_group_iface 0")
 213
 214     hapd = hostapd.add_ap(apdev[0]['ifname'],
 215                           { "ssid": 'bss-2.4ghz', "channel": '5' })
 216     dev[0].connect("bss-2.4ghz", key_mgmt="NONE", scan_freq="2432")
 217     #dev[0] as GO
 218     [i_res, r_res] = go_neg_pbc(i_dev=dev[0], i_intent=10, r_dev=dev[1],
 219                                 r_intent=1)
 220     check_grpform_results(i_res, r_res)
 221     if i_res['role'] != "GO":
 222        raise Exception("GO not selected according to go_intent")
 223     if i_res['freq'] != "2432":
 224        raise Exception("Group formed on a different frequency than BSS")
 225     hwsim_utils.test_connectivity(dev[0], hapd)
 226     dev[0].remove_group(i_res['ifname'])
 227
 228     if dev[0].get_mcc() > 1:
 229         logger.info("Skip as-client case due to MCC being enabled")
 230         return;
 231
 232     #dev[0] as client
 233     [i_res2, r_res2] = go_neg_pbc(i_dev=dev[0], i_intent=1, r_dev=dev[1],
 234                                   r_intent=10)
 235     check_grpform_results(i_res2, r_res2)
 236     if i_res2['role'] != "client":
 237        raise Exception("GO not selected according to go_intent")
 238     if i_res2['freq'] != "2432":
 239        raise Exception("Group formed on a different frequency than BSS")
 240     hwsim_utils.test_connectivity(dev[0], hapd)
 241
 242 def test_autogo_with_bss_on_disallowed_chan(dev, apdev):
 243     """P2P channel selection: Autonomous GO with BSS on a disallowed channel"""
 244
 245     with HWSimRadio(n_channels=2) as (radio, iface):
 246         wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
 247         wpas.interface_add(iface)
 248
 249         wpas.request("SET p2p_no_group_iface 0")
 250
 251         if wpas.get_mcc() < 2:
 252            raise Exception("New radio does not support MCC")
 253
 254         try:
 255             hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": 'bss-2.4ghz',
 256                                                         "channel": '1' })
 257             wpas.request("P2P_SET disallow_freq 2412")
 258             wpas.connect("bss-2.4ghz", key_mgmt="NONE", scan_freq="2412")
 259             res = autogo(wpas)
 260             if res['freq'] == "2412":
 261                raise Exception("GO set on a disallowed channel")
 262             hwsim_utils.test_connectivity(wpas, hapd)
 263         finally:
 264             wpas.request("P2P_SET disallow_freq ")
 265
 266 def test_go_neg_with_bss_on_disallowed_chan(dev, apdev):
 267     """P2P channel selection: GO negotiation with station interface on a disallowed channel"""
 268
 269     with HWSimRadio(n_channels=2) as (radio, iface):
 270         wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
 271         wpas.interface_add(iface)
 272
 273         wpas.request("SET p2p_no_group_iface 0")
 274
 275         if wpas.get_mcc() < 2:
 276            raise Exception("New radio does not support MCC")
 277
 278         try:
 279             hapd = hostapd.add_ap(apdev[0]['ifname'],
 280                                   { "ssid": 'bss-2.4ghz', "channel": '1' })
 281             # make sure PBC overlap from old test cases is not maintained
 282             dev[0].flush_scan_cache()
 283             dev[1].flush_scan_cache()
 284             wpas.connect("bss-2.4ghz", key_mgmt="NONE", scan_freq="2412")
 285             wpas.request("P2P_SET disallow_freq 2412")
 286
 287             #wpas as GO
 288             [i_res, r_res] = go_neg_pbc(i_dev=wpas, i_intent=10, r_dev=dev[1],
 289                                         r_intent=1)
 290             check_grpform_results(i_res, r_res)
 291             if i_res['role'] != "GO":
 292                raise Exception("GO not selected according to go_intent")
 293             if i_res['freq'] == "2412":
 294                raise Exception("Group formed on a disallowed channel")
 295             hwsim_utils.test_connectivity(wpas, hapd)
 296             wpas.remove_group(i_res['ifname'])
 297
 298             #wpas as client
 299             [i_res2, r_res2] = go_neg_pbc(i_dev=wpas, i_intent=1, r_dev=dev[1],
 300                                           r_intent=10)
 301             check_grpform_results(i_res2, r_res2)
 302             if i_res2['role'] != "client":
 303                raise Exception("GO not selected according to go_intent")
 304             if i_res2['freq'] == "2412":
 305                raise Exception("Group formed on a disallowed channel")
 306             hwsim_utils.test_connectivity(wpas, hapd)
 307         finally:
 308             wpas.request("P2P_SET disallow_freq ")
 309
 310 def test_autogo_force_diff_channel(dev, apdev):
 311     """P2P autonomous GO and station interface operate on different channels"""
 312     with HWSimRadio(n_channels=2) as (radio, iface):
 313         wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
 314         wpas.interface_add(iface)
 315
 316         if wpas.get_mcc() < 2:
 317            raise Exception("New radio does not support MCC")
 318
 319         wpas.request("SET p2p_no_group_iface 0")
 320
 321         hapd = hostapd.add_ap(apdev[0]['ifname'],
 322                               {"ssid" : 'ap-test', "channel" : '1'})
 323         wpas.connect("ap-test", key_mgmt = "NONE", scan_freq = "2412")
 324         channels = { 2 : 2417, 5 : 2432, 9 : 2452 }
 325         for key in channels:
 326             res_go = autogo(wpas, channels[key])
 327             hwsim_utils.test_connectivity(wpas, hapd)
 328             if int(res_go['freq']) == 2412:
 329                 raise Exception("Group operation channel is: 2412 excepted: " + res_go['freq'])
 330             wpas.remove_group(res_go['ifname'])
 331
 332 def test_go_neg_forced_freq_diff_than_bss_freq(dev, apdev):
 333     """P2P channel selection: GO negotiation with forced freq different than station interface"""
 334     with HWSimRadio(n_channels=2) as (radio, iface):
 335         wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
 336         wpas.interface_add(iface)
 337
 338         if wpas.get_mcc() < 2:
 339            raise Exception("New radio does not support MCC")
 340
 341         # Clear possible PBC session overlap from previous test case
 342         dev[1].flush_scan_cache()
 343
 344         wpas.request("SET p2p_no_group_iface 0")
 345
 346         hapd = hostapd.add_ap(apdev[0]['ifname'],
 347                               { "country_code": 'US',
 348                                 "ssid": 'bss-5ghz', "hw_mode": 'a',
 349                                 "channel": '40' })
 350         wpas.connect("bss-5ghz", key_mgmt="NONE", scan_freq="5200")
 351
 352         # GO and peer force the same freq, different than BSS freq,
 353         # wpas to become GO
 354         [i_res, r_res] = go_neg_pbc(i_dev=dev[1], i_intent=1, i_freq=5180,
 355                                     r_dev=wpas, r_intent=14, r_freq=5180)
 356         check_grpform_results(i_res, r_res)
 357         if i_res['freq'] != "5180":
 358            raise Exception("P2P group formed on unexpected frequency: " + i_res['freq'])
 359         if r_res['role'] != "GO":
 360            raise Exception("GO not selected according to go_intent")
 361         hwsim_utils.test_connectivity(wpas, hapd)
 362         wpas.remove_group(r_res['ifname'])
 363
 364         # GO and peer force the same freq, different than BSS freq, wpas to
 365         # become client
 366         [i_res2, r_res2] = go_neg_pbc(i_dev=dev[1], i_intent=14, i_freq=2422,
 367                                       r_dev=wpas, r_intent=1, r_freq=2422)
 368         check_grpform_results(i_res2, r_res2)
 369         if i_res2['freq'] != "2422":
 370            raise Exception("P2P group formed on unexpected frequency: " + i_res2['freq'])
 371         if r_res2['role'] != "client":
 372            raise Exception("GO not selected according to go_intent")
 373         hwsim_utils.test_connectivity(wpas, hapd)
 374
 375 def test_go_pref_chan_bss_on_diff_chan(dev, apdev):
 376     """P2P channel selection: Station on different channel than GO configured pref channel"""
 377
 378     dev[0].request("SET p2p_no_group_iface 0")
 379
 380     try:
 381         hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": 'bss-2.4ghz',
 382                                                     "channel": '1' })
 383         dev[0].request("SET p2p_pref_chan 81:2")
 384         dev[0].connect("bss-2.4ghz", key_mgmt="NONE", scan_freq="2412")
 385         res = autogo(dev[0])
 386         if res['freq'] != "2412":
 387            raise Exception("GO channel did not follow BSS")
 388         hwsim_utils.test_connectivity(dev[0], hapd)
 389     finally:
 390         dev[0].request("SET p2p_pref_chan ")
 391
 392 def test_go_pref_chan_bss_on_disallowed_chan(dev, apdev):
 393     """P2P channel selection: Station interface on different channel than GO configured pref channel, and station channel is disallowed"""
 394     with HWSimRadio(n_channels=2) as (radio, iface):
 395         wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
 396         wpas.interface_add(iface)
 397
 398         if wpas.get_mcc() < 2:
 399            raise Exception("New radio does not support MCC")
 400
 401         wpas.request("SET p2p_no_group_iface 0")
 402
 403         try:
 404             hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": 'bss-2.4ghz',
 405                                                         "channel": '1' })
 406             wpas.request("P2P_SET disallow_freq 2412")
 407             wpas.request("SET p2p_pref_chan 81:2")
 408             wpas.connect("bss-2.4ghz", key_mgmt="NONE", scan_freq="2412")
 409             res2 = autogo(wpas)
 410             if res2['freq'] != "2417":
 411                raise Exception("GO channel did not follow pref_chan configuration")
 412             hwsim_utils.test_connectivity(wpas, hapd)
 413         finally:
 414             wpas.request("P2P_SET disallow_freq ")
 415             wpas.request("SET p2p_pref_chan ")
 416
 417 def test_no_go_freq(dev, apdev):
 418     """P2P channel selection: no GO freq"""
 419     try:
 420        dev[0].request("SET p2p_no_go_freq 2412")
 421        # dev[0] as client, channel 1 is ok
 422        [i_res, r_res] = go_neg_pbc(i_dev=dev[0], i_intent=1,
 423                                    r_dev=dev[1], r_intent=14, r_freq=2412)
 424        check_grpform_results(i_res, r_res)
 425        if i_res['freq'] != "2412":
 426           raise Exception("P2P group not formed on forced freq")
 427
 428        dev[1].remove_group(r_res['ifname'])
 429        fail = False
 430        # dev[0] as GO, channel 1 is not allowed
 431        try:
 432           dev[0].request("SET p2p_no_go_freq 2412")
 433           [i_res2, r_res2] = go_neg_pbc(i_dev=dev[0], i_intent=14,
 434                                         r_dev=dev[1], r_intent=1, r_freq=2412)
 435           check_grpform_results(i_res2, r_res2)
 436           fail = True
 437        except:
 438            pass
 439        if fail:
 440            raise Exception("GO set on a disallowed freq")
 441     finally:
 442        dev[0].request("SET p2p_no_go_freq ")
 443
 444 def test_go_neg_peers_force_diff_freq(dev, apdev):
 445     try:
 446        [i_res2, r_res2] = go_neg_pbc(i_dev=dev[0], i_intent=14, i_freq=5180,
 447                                      r_dev=dev[1], r_intent=0, r_freq=5200)
 448     except Exception, e:
 449         return
 450     raise Exception("Unexpected group formation success")
 451
 452 def test_autogo_random_channel(dev, apdev):
 453     """P2P channel selection: GO instantiated on random channel 1, 6, 11"""
 454     freqs = []
 455     go_freqs = ["2412", "2437", "2462"]
 456     for i in range(0, 20):
 457         result = autogo(dev[0])
 458         if result['freq'] not in go_freqs:
 459            raise Exception("Unexpected frequency selected: " + result['freq'])
 460         if result['freq'] not in freqs:
 461             freqs.append(result['freq'])
 462         if len(freqs) == 3:
 463             break
 464         dev[0].remove_group(result['ifname'])
 465     if i == 20:
 466        raise Exception("GO created 20 times and not all social channels were selected. freqs not selected: " + str(list(set(go_freqs) - set(freqs))))
 467
 468 def test_p2p_autogo_pref_chan_disallowed(dev, apdev):
 469     """P2P channel selection: GO preferred channels are disallowed"""
 470     try:
 471        dev[0].request("SET p2p_pref_chan 81:1,81:3,81:6,81:9,81:11")
 472        dev[0].request("P2P_SET disallow_freq 2412,2422,2437,2452,2462")
 473        for i in range(0, 5):
 474            res = autogo(dev[0])
 475            if res['freq'] in [ "2412", "2422", "2437", "2452", "2462" ]:
 476                raise Exception("GO channel is disallowed")
 477            dev[0].remove_group(res['ifname'])
 478     finally:
 479        dev[0].request("P2P_SET disallow_freq ")
 480        dev[0].request("SET p2p_pref_chan ")
 481
 482 def test_p2p_autogo_pref_chan_not_in_regulatory(dev, apdev):
 483     """P2P channel selection: GO preferred channel not allowed in the regulatory rules"""
 484     try:
 485         set_country("US")
 486         dev[0].request("SET p2p_pref_chan 124:149")
 487         res = autogo(dev[0], persistent=True)
 488         if res['freq'] != "5745":
 489             raise Exception("Unexpected channel selected: " + res['freq'])
 490         dev[0].remove_group(res['ifname'])
 491
 492         netw = dev[0].list_networks()
 493         if len(netw) != 1:
 494             raise Exception("Unexpected number of network blocks: " + str(netw))
 495         id = netw[0]['id']
 496
 497         set_country("DE")
 498         res = autogo(dev[0], persistent=id)
 499         if res['freq'] == "5745":
 500             raise Exception("Unexpected channel selected(2): " + res['freq'])
 501         dev[0].remove_group(res['ifname'])
 502     finally:
 503         dev[0].request("SET p2p_pref_chan ")
 504         set_country("00")