# Cipher suite tests # Copyright (c) 2013-2015, Jouni Malinen # # This software may be distributed under the terms of the BSD license. # See README for more details. from remotehost import remote_compatible import time import logging logger = logging.getLogger() import os import subprocess import hwsim_utils import hostapd from utils import HwsimSkip, skip_with_fips, require_under_vm from wlantest import Wlantest def check_cipher(dev, ap, cipher): if cipher not in dev.get_capability("pairwise"): raise HwsimSkip("Cipher %s not supported" % cipher) params = { "ssid": "test-wpa2-psk", "wpa_passphrase": "12345678", "wpa": "2", "wpa_key_mgmt": "WPA-PSK", "rsn_pairwise": cipher } hapd = hostapd.add_ap(ap, params) dev.connect("test-wpa2-psk", psk="12345678", pairwise=cipher, group=cipher, scan_freq="2412") hwsim_utils.test_connectivity(dev, hapd) def check_group_mgmt_cipher(dev, ap, cipher, sta_req_cipher=None): if cipher not in dev.get_capability("group_mgmt"): raise HwsimSkip("Cipher %s not supported" % cipher) params = { "ssid": "test-wpa2-psk-pmf", "wpa_passphrase": "12345678", "wpa": "2", "ieee80211w": "2", "wpa_key_mgmt": "WPA-PSK-SHA256", "rsn_pairwise": "CCMP", "group_mgmt_cipher": cipher } hapd = hostapd.add_ap(ap, params) Wlantest.setup(hapd) wt = Wlantest() wt.flush() wt.add_passphrase("12345678") dev.connect("test-wpa2-psk-pmf", psk="12345678", ieee80211w="2", key_mgmt="WPA-PSK-SHA256", group_mgmt=sta_req_cipher, pairwise="CCMP", group="CCMP", scan_freq="2412") hwsim_utils.test_connectivity(dev, hapd) hapd.request("DEAUTHENTICATE ff:ff:ff:ff:ff:ff") dev.wait_disconnected() if wt.get_bss_counter('valid_bip_mmie', ap['bssid']) < 1: raise Exception("No valid BIP MMIE seen") if wt.get_bss_counter('bip_deauth', ap['bssid']) < 1: raise Exception("No valid BIP deauth seen") if cipher == "AES-128-CMAC": group_mgmt = "BIP" else: group_mgmt = cipher res = wt.info_bss('group_mgmt', ap['bssid']).strip() if res != group_mgmt: raise Exception("Unexpected group mgmt cipher: " + res) @remote_compatible def test_ap_cipher_tkip(dev, apdev): """WPA2-PSK/TKIP connection""" skip_with_fips(dev[0]) check_cipher(dev[0], apdev[0], "TKIP") @remote_compatible def test_ap_cipher_tkip_countermeasures_ap(dev, apdev): """WPA-PSK/TKIP countermeasures (detected by AP)""" skip_with_fips(dev[0]) testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (dev[0].get_driver_status_field("phyname"), dev[0].ifname) if dev[0].cmd_execute([ "ls", testfile ])[0] != 0: raise HwsimSkip("tkip_mic_test not supported in mac80211") params = { "ssid": "tkip-countermeasures", "wpa_passphrase": "12345678", "wpa": "1", "wpa_key_mgmt": "WPA-PSK", "wpa_pairwise": "TKIP" } hapd = hostapd.add_ap(apdev[0], params) dev[0].connect("tkip-countermeasures", psk="12345678", pairwise="TKIP", group="TKIP", scan_freq="2412") dev[0].dump_monitor() dev[0].cmd_execute([ "echo", "-n", apdev[0]['bssid'], ">", testfile ], shell=True) ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1) if ev is not None: raise Exception("Unexpected disconnection on first Michael MIC failure") dev[0].cmd_execute([ "echo", "-n", "ff:ff:ff:ff:ff:ff", ">", testfile ], shell=True) ev = dev[0].wait_disconnected(timeout=10, error="No disconnection after two Michael MIC failures") if "reason=14" not in ev: raise Exception("Unexpected disconnection reason: " + ev) ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1) if ev is not None: raise Exception("Unexpected connection during TKIP countermeasures") @remote_compatible def test_ap_cipher_tkip_countermeasures_sta(dev, apdev): """WPA-PSK/TKIP countermeasures (detected by STA)""" skip_with_fips(dev[0]) params = { "ssid": "tkip-countermeasures", "wpa_passphrase": "12345678", "wpa": "1", "wpa_key_mgmt": "WPA-PSK", "wpa_pairwise": "TKIP" } hapd = hostapd.add_ap(apdev[0], params) testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (hapd.get_driver_status_field("phyname"), apdev[0]['ifname']) if hapd.cmd_execute([ "ls", testfile ])[0] != 0: raise HwsimSkip("tkip_mic_test not supported in mac80211") dev[0].connect("tkip-countermeasures", psk="12345678", pairwise="TKIP", group="TKIP", scan_freq="2412") dev[0].dump_monitor() hapd.cmd_execute([ "echo", "-n", dev[0].own_addr(), ">", testfile ], shell=True) ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1) if ev is not None: raise Exception("Unexpected disconnection on first Michael MIC failure") hapd.cmd_execute([ "echo", "-n", "ff:ff:ff:ff:ff:ff", ">", testfile ], shell=True) ev = dev[0].wait_disconnected(timeout=10, error="No disconnection after two Michael MIC failures") if "reason=14 locally_generated=1" not in ev: raise Exception("Unexpected disconnection reason: " + ev) ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1) if ev is not None: raise Exception("Unexpected connection during TKIP countermeasures") def test_ap_cipher_tkip_countermeasures_sta2(dev, apdev, params): """WPA-PSK/TKIP countermeasures (detected by two STAs) [long]""" if not params['long']: raise HwsimSkip("Skip test case with long duration due to --long not specified") skip_with_fips(dev[0]) params = { "ssid": "tkip-countermeasures", "wpa_passphrase": "12345678", "wpa": "1", "wpa_key_mgmt": "WPA-PSK", "wpa_pairwise": "TKIP" } hapd = hostapd.add_ap(apdev[0], params) testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (hapd.get_driver_status_field("phyname"), apdev[0]['ifname']) if hapd.cmd_execute([ "ls", testfile ])[0] != 0: raise HwsimSkip("tkip_mic_test not supported in mac80211") dev[0].connect("tkip-countermeasures", psk="12345678", pairwise="TKIP", group="TKIP", scan_freq="2412") dev[0].dump_monitor() id = dev[1].connect("tkip-countermeasures", psk="12345678", pairwise="TKIP", group="TKIP", scan_freq="2412") dev[1].dump_monitor() hapd.cmd_execute([ "echo", "-n", "ff:ff:ff:ff:ff:ff", ">", testfile ], shell=True) ev = dev[0].wait_disconnected(timeout=10, error="No disconnection after two Michael MIC failure") if "reason=14" not in ev: raise Exception("Unexpected disconnection reason: " + ev) ev = dev[1].wait_disconnected(timeout=5, error="No disconnection after two Michael MIC failure") if "reason=14" not in ev: raise Exception("Unexpected disconnection reason: " + ev) ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1) if ev is not None: raise Exception("Unexpected connection during TKIP countermeasures") ev = dev[1].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1) if ev is not None: raise Exception("Unexpected connection during TKIP countermeasures") dev[0].request("REMOVE_NETWORK all") logger.info("Waiting for TKIP countermeasures to end") connected = False start = os.times()[4] while True: now = os.times()[4] if start + 70 < now: break dev[0].connect("tkip-countermeasures", psk="12345678", pairwise="TKIP", group="TKIP", scan_freq="2412", wait_connect=False) ev = dev[0].wait_event(["CTRL-EVENT-AUTH-REJECT", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("No connection result") if "CTRL-EVENT-CONNECTED" in ev: connected = True break if "status_code=14" not in ev: raise Exception("Unexpected connection failure reason during TKIP countermeasures: " + ev) dev[0].request("REMOVE_NETWORK all") time.sleep(1) dev[0].dump_monitor() dev[1].dump_monitor() if not connected: raise Exception("No connection after TKIP countermeasures terminated") ev = dev[1].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1) if ev is None: dev[1].request("DISCONNECT") dev[1].select_network(id) dev[1].wait_connected() @remote_compatible def test_ap_cipher_ccmp(dev, apdev): """WPA2-PSK/CCMP connection""" check_cipher(dev[0], apdev[0], "CCMP") def test_ap_cipher_gcmp(dev, apdev): """WPA2-PSK/GCMP connection""" check_cipher(dev[0], apdev[0], "GCMP") def test_ap_cipher_ccmp_256(dev, apdev): """WPA2-PSK/CCMP-256 connection""" check_cipher(dev[0], apdev[0], "CCMP-256") def test_ap_cipher_gcmp_256(dev, apdev): """WPA2-PSK/GCMP-256 connection""" check_cipher(dev[0], apdev[0], "GCMP-256") @remote_compatible def test_ap_cipher_mixed_wpa_wpa2(dev, apdev): """WPA2-PSK/CCMP/ and WPA-PSK/TKIP mixed configuration""" skip_with_fips(dev[0]) ssid = "test-wpa-wpa2-psk" passphrase = "12345678" params = { "ssid": ssid, "wpa_passphrase": passphrase, "wpa": "3", "wpa_key_mgmt": "WPA-PSK", "rsn_pairwise": "CCMP", "wpa_pairwise": "TKIP" } hapd = hostapd.add_ap(apdev[0], params) dev[0].connect(ssid, psk=passphrase, proto="WPA2", pairwise="CCMP", group="TKIP", scan_freq="2412") status = dev[0].get_status() if status['key_mgmt'] != 'WPA2-PSK': raise Exception("Incorrect key_mgmt reported") if status['pairwise_cipher'] != 'CCMP': raise Exception("Incorrect pairwise_cipher reported") if status['group_cipher'] != 'TKIP': raise Exception("Incorrect group_cipher reported") bss = dev[0].get_bss(apdev[0]['bssid']) if bss['ssid'] != ssid: raise Exception("Unexpected SSID in the BSS entry") if "[WPA-PSK-TKIP]" not in bss['flags']: raise Exception("Missing BSS flag WPA-PSK-TKIP") if "[WPA2-PSK-CCMP]" not in bss['flags']: raise Exception("Missing BSS flag WPA2-PSK-CCMP") hwsim_utils.test_connectivity(dev[0], hapd) dev[1].connect(ssid, psk=passphrase, proto="WPA", pairwise="TKIP", group="TKIP", scan_freq="2412") status = dev[1].get_status() if status['key_mgmt'] != 'WPA-PSK': raise Exception("Incorrect key_mgmt reported") if status['pairwise_cipher'] != 'TKIP': raise Exception("Incorrect pairwise_cipher reported") if status['group_cipher'] != 'TKIP': raise Exception("Incorrect group_cipher reported") hwsim_utils.test_connectivity(dev[1], hapd) hwsim_utils.test_connectivity(dev[0], dev[1]) @remote_compatible def test_ap_cipher_bip(dev, apdev): """WPA2-PSK with BIP""" check_group_mgmt_cipher(dev[0], apdev[0], "AES-128-CMAC") def test_ap_cipher_bip_req(dev, apdev): """WPA2-PSK with BIP required""" check_group_mgmt_cipher(dev[0], apdev[0], "AES-128-CMAC", "AES-128-CMAC") def test_ap_cipher_bip_req2(dev, apdev): """WPA2-PSK with BIP required (2)""" check_group_mgmt_cipher(dev[0], apdev[0], "AES-128-CMAC", "AES-128-CMAC BIP-GMAC-128 BIP-GMAC-256 BIP-CMAC-256") def test_ap_cipher_bip_gmac_128(dev, apdev): """WPA2-PSK with BIP-GMAC-128""" check_group_mgmt_cipher(dev[0], apdev[0], "BIP-GMAC-128") def test_ap_cipher_bip_gmac_128_req(dev, apdev): """WPA2-PSK with BIP-GMAC-128 required""" check_group_mgmt_cipher(dev[0], apdev[0], "BIP-GMAC-128", "BIP-GMAC-128") def test_ap_cipher_bip_gmac_256(dev, apdev): """WPA2-PSK with BIP-GMAC-256""" check_group_mgmt_cipher(dev[0], apdev[0], "BIP-GMAC-256") def test_ap_cipher_bip_gmac_256_req(dev, apdev): """WPA2-PSK with BIP-GMAC-256 required""" check_group_mgmt_cipher(dev[0], apdev[0], "BIP-GMAC-256", "BIP-GMAC-256") def test_ap_cipher_bip_cmac_256(dev, apdev): """WPA2-PSK with BIP-CMAC-256""" check_group_mgmt_cipher(dev[0], apdev[0], "BIP-CMAC-256") def test_ap_cipher_bip_cmac_256_req(dev, apdev): """WPA2-PSK with BIP-CMAC-256 required""" check_group_mgmt_cipher(dev[0], apdev[0], "BIP-CMAC-256", "BIP-CMAC-256") def test_ap_cipher_bip_req_mismatch(dev, apdev): """WPA2-PSK with BIP cipher mismatch""" group_mgmt = dev[0].get_capability("group_mgmt") for cipher in [ "AES-128-CMAC", "BIP-GMAC-256" ]: if cipher not in group_mgmt: raise HwsimSkip("Cipher %s not supported" % cipher) params = { "ssid": "test-wpa2-psk-pmf", "wpa_passphrase": "12345678", "wpa": "2", "ieee80211w": "2", "wpa_key_mgmt": "WPA-PSK-SHA256", "rsn_pairwise": "CCMP", "group_mgmt_cipher": "AES-128-CMAC" } hapd = hostapd.add_ap(apdev[0], params) dev[0].scan_for_bss(hapd.own_addr(), 2412) id = dev[0].connect("test-wpa2-psk-pmf", psk="12345678", ieee80211w="2", key_mgmt="WPA-PSK-SHA256", group_mgmt="BIP-GMAC-256", pairwise="CCMP", group="CCMP", scan_freq="2412", wait_connect=False) ev = dev[0].wait_event(["CTRL-EVENT-NETWORK-NOT-FOUND", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Network selection result not indicated") if "CTRL-EVENT-CONNECTED" in ev: raise Exception("Unexpected connection") dev[0].request("DISCONNECT") dev[0].set_network(id, "group_mgmt", "AES-128-CMAC") dev[0].select_network(id) dev[0].wait_connected() def get_rx_spec(phy, gtk=False): keys = "/sys/kernel/debug/ieee80211/%s/keys" % (phy) for key in os.listdir(keys): keydir = keys + "/" + key files = os.listdir(keydir) if not gtk and "station" not in files: continue if gtk and "station" in files: continue with open(keydir + "/rx_spec") as f: return f.read() return None def test_ap_wpa2_delayed_m3_retransmission(dev, apdev): """Delayed M3 retransmission""" require_under_vm() try: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=1'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=1'], stdout=open('/dev/null', 'w')) run_ap_wpa2_delayed_m3_retransmission(dev, apdev) finally: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=0'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=0'], stdout=open('/dev/null', 'w')) def run_ap_wpa2_delayed_m3_retransmission(dev, apdev): params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678") hapd = hostapd.add_ap(apdev[0], params) Wlantest.setup(hapd) wt = Wlantest() wt.flush() wt.add_passphrase("12345678") phy = dev[0].get_driver_status_field("phyname") dev[0].connect("test-wpa2-psk", psk="12345678", scan_freq="2412") for i in range(5): hwsim_utils.test_connectivity(dev[0], hapd) time.sleep(0.1) before_tk = get_rx_spec(phy, gtk=False).splitlines() before_gtk = get_rx_spec(phy, gtk=True).splitlines() addr = dev[0].own_addr() if "OK" not in hapd.request("RESEND_M3 " + addr): raise Exception("RESEND_M3 failed") time.sleep(0.1) after_tk = get_rx_spec(phy, gtk=False).splitlines() after_gtk = get_rx_spec(phy, gtk=True).splitlines() if "OK" not in hapd.request("RESET_PN " + addr): raise Exception("RESET_PN failed") time.sleep(0.1) hwsim_utils.test_connectivity(dev[0], hapd, timeout=1, success_expected=False) dev[0].request("DISCONNECT") dev[0].wait_disconnected() for i in range(len(before_tk)): b = int(before_tk[i], 16) a = int(after_tk[i], 16) if a < b: raise Exception("TK RX counter decreased: idx=%d before=%d after=%d" % (i, b, a)) for i in range(len(before_gtk)): b = int(before_gtk[i], 16) a = int(after_gtk[i], 16) if a < b: raise Exception("GTK RX counter decreased: idx=%d before=%d after=%d" % (i, b, a)) def test_ap_wpa2_delayed_m1_m3_retransmission(dev, apdev): """Delayed M1+M3 retransmission""" require_under_vm() try: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=1'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=1'], stdout=open('/dev/null', 'w')) run_ap_wpa2_delayed_m1_m3_retransmission(dev, apdev) finally: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=0'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=0'], stdout=open('/dev/null', 'w')) def test_ap_wpa2_delayed_m1_m3_retransmission2(dev, apdev): """Delayed M1+M3 retransmission (change M1 ANonce)""" require_under_vm() try: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=1'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=1'], stdout=open('/dev/null', 'w')) run_ap_wpa2_delayed_m1_m3_retransmission(dev, apdev, True) finally: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=0'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=0'], stdout=open('/dev/null', 'w')) def run_ap_wpa2_delayed_m1_m3_retransmission(dev, apdev, change_m1_anonce=False): params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678") hapd = hostapd.add_ap(apdev[0], params) Wlantest.setup(hapd) wt = Wlantest() wt.flush() wt.add_passphrase("12345678") phy = dev[0].get_driver_status_field("phyname") dev[0].connect("test-wpa2-psk", psk="12345678", scan_freq="2412") for i in range(5): hwsim_utils.test_connectivity(dev[0], hapd) time.sleep(0.1) before_tk = get_rx_spec(phy, gtk=False).splitlines() before_gtk = get_rx_spec(phy, gtk=True).splitlines() addr = dev[0].own_addr() if change_m1_anonce: if "OK" not in hapd.request("RESEND_M1 " + addr + " change-anonce"): raise Exception("RESEND_M1 failed") if "OK" not in hapd.request("RESEND_M1 " + addr): raise Exception("RESEND_M1 failed") if "OK" not in hapd.request("RESEND_M3 " + addr): raise Exception("RESEND_M3 failed") time.sleep(0.1) after_tk = get_rx_spec(phy, gtk=False).splitlines() after_gtk = get_rx_spec(phy, gtk=True).splitlines() if "OK" not in hapd.request("RESET_PN " + addr): raise Exception("RESET_PN failed") time.sleep(0.1) hwsim_utils.test_connectivity(dev[0], hapd, timeout=1, success_expected=False) dev[0].request("DISCONNECT") dev[0].wait_disconnected() for i in range(len(before_tk)): b = int(before_tk[i], 16) a = int(after_tk[i], 16) if a < b: raise Exception("TK RX counter decreased: idx=%d before=%d after=%d" % (i, b, a)) for i in range(len(before_gtk)): b = int(before_gtk[i], 16) a = int(after_gtk[i], 16) if a < b: raise Exception("GTK RX counter decreased: idx=%d before=%d after=%d" % (i, b, a)) def test_ap_wpa2_delayed_group_m1_retransmission(dev, apdev): """Delayed group M1 retransmission""" require_under_vm() try: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=1'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=1'], stdout=open('/dev/null', 'w')) run_ap_wpa2_delayed_group_m1_retransmission(dev, apdev) finally: subprocess.call(['sysctl', '-w', 'net.ipv6.conf.all.disable_ipv6=0'], stdout=open('/dev/null', 'w')) subprocess.call(['sysctl', '-w', 'net.ipv6.conf.default.disable_ipv6=0'], stdout=open('/dev/null', 'w')) def run_ap_wpa2_delayed_group_m1_retransmission(dev, apdev): params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678") hapd = hostapd.add_ap(apdev[0], params) Wlantest.setup(hapd) wt = Wlantest() wt.flush() wt.add_passphrase("12345678") phy = dev[0].get_driver_status_field("phyname") dev[0].connect("test-wpa2-psk", psk="12345678", scan_freq="2412") for i in range(5): hwsim_utils.test_connectivity(dev[0], hapd) time.sleep(0.1) before = get_rx_spec(phy, gtk=True).splitlines() addr = dev[0].own_addr() if "OK" not in hapd.request("RESEND_GROUP_M1 " + addr): raise Exception("RESEND_GROUP_M1 failed") time.sleep(0.1) after = get_rx_spec(phy, gtk=True).splitlines() if "OK" not in hapd.request("RESET_PN " + addr): raise Exception("RESET_PN failed") time.sleep(0.1) hwsim_utils.test_connectivity(dev[0], hapd, timeout=1, success_expected=False) dev[0].request("DISCONNECT") dev[0].wait_disconnected() for i in range(len(before)): b = int(before[i], 16) a = int(after[i], 16) if a < b: raise Exception("RX counter decreased: idx=%d before=%d after=%d" % (i, b, a)) def test_ap_wpa2_delayed_m1_m3_zero_tk(dev, apdev): """Delayed M1+M3 retransmission and zero TK""" params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678") hapd = hostapd.add_ap(apdev[0], params) Wlantest.setup(hapd) wt = Wlantest() wt.flush() wt.add_passphrase("12345678") dev[0].connect("test-wpa2-psk", psk="12345678", scan_freq="2412") hwsim_utils.test_connectivity(dev[0], hapd) addr = dev[0].own_addr() if "OK" not in hapd.request("RESEND_M1 " + addr + " change-anonce"): raise Exception("RESEND_M1 failed") if "OK" not in hapd.request("RESEND_M1 " + addr): raise Exception("RESEND_M1 failed") if "OK" not in hapd.request("RESEND_M3 " + addr): raise Exception("RESEND_M3 failed") if "OK" not in hapd.request("SET_KEY 3 %s %d %d %s %s" % (addr, 0, 1, 6*"00", 16*"00")): raise Exception("SET_KEY failed") time.sleep(0.1) hwsim_utils.test_connectivity(dev[0], hapd, timeout=1, broadcast=False, success_expected=False) dev[0].request("DISCONNECT") dev[0].wait_disconnected()