tests/hwsim/test_ap_roam.py

   1 # Roaming tests
   2 # Copyright (c) 2013, Jouni Malinen <j@w1.fi>
   3 #
   4 # This software may be distributed under the terms of the BSD license.
   5 # See README for more details.
   6
   7 import time
   8 import subprocess
   9 import logging
  10 logger = logging.getLogger()
  11
  12 import hwsim_utils
  13 import hostapd
  14
  15 def test_ap_roam_open(dev, apdev):
  16     """Roam between two open APs"""
  17     hapd0 = hostapd.add_ap(apdev[0]['ifname'], { "ssid": "test-open" })
  18     dev[0].connect("test-open", key_mgmt="NONE")
  19     hwsim_utils.test_connectivity(dev[0], hapd0)
  20     hapd1 = hostapd.add_ap(apdev[1]['ifname'], { "ssid": "test-open" })
  21     dev[0].scan(type="ONLY")
  22     dev[0].roam(apdev[1]['bssid'])
  23     hwsim_utils.test_connectivity(dev[0], hapd1)
  24     dev[0].roam(apdev[0]['bssid'])
  25     hwsim_utils.test_connectivity(dev[0], hapd0)
  26
  27 def test_ap_roam_wpa2_psk(dev, apdev):
  28     """Roam between two WPA2-PSK APs"""
  29     params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678")
  30     hapd0 = hostapd.add_ap(apdev[0]['ifname'], params)
  31     dev[0].connect("test-wpa2-psk", psk="12345678")
  32     hwsim_utils.test_connectivity(dev[0], hapd0)
  33     hapd1 = hostapd.add_ap(apdev[1]['ifname'], params)
  34     dev[0].scan(type="ONLY")
  35     dev[0].roam(apdev[1]['bssid'])
  36     hwsim_utils.test_connectivity(dev[0], hapd1)
  37     dev[0].roam(apdev[0]['bssid'])
  38     hwsim_utils.test_connectivity(dev[0], hapd0)
  39
  40 def test_ap_reassociation_to_same_bss(dev, apdev):
  41     """Reassociate to the same BSS"""
  42     hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": "test-open" })
  43     dev[0].connect("test-open", key_mgmt="NONE")
  44
  45     dev[0].request("REASSOCIATE")
  46     dev[0].wait_connected(timeout=10, error="Reassociation timed out")
  47     hwsim_utils.test_connectivity(dev[0], hapd)
  48
  49     dev[0].request("REATTACH")
  50     dev[0].wait_connected(timeout=10, error="Reattach timed out")
  51     hwsim_utils.test_connectivity(dev[0], hapd)
  52
  53 def test_ap_roam_set_bssid(dev, apdev):
  54     """Roam control"""
  55     hostapd.add_ap(apdev[0]['ifname'], { "ssid": "test-open" })
  56     hostapd.add_ap(apdev[1]['ifname'], { "ssid": "test-open" })
  57     id = dev[0].connect("test-open", key_mgmt="NONE", bssid=apdev[1]['bssid'],
  58                         scan_freq="2412")
  59     if dev[0].get_status_field('bssid') != apdev[1]['bssid']:
  60         raise Exception("Unexpected BSS")
  61     # for now, these are just verifying that the code path to indicate
  62     # within-ESS roaming changes can be executed; the actual results of those
  63     # operations are not currently verified (that would require a test driver
  64     # that does BSS selection)
  65     dev[0].set_network(id, "bssid", "")
  66     dev[0].set_network(id, "bssid", apdev[0]['bssid'])
  67     dev[0].set_network(id, "bssid", apdev[1]['bssid'])
  68
  69 def test_ap_roam_wpa2_psk_race(dev, apdev):
  70     """Roam between two WPA2-PSK APs and try to hit a disconnection race"""
  71     params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678")
  72     hapd0 = hostapd.add_ap(apdev[0]['ifname'], params)
  73     dev[0].connect("test-wpa2-psk", psk="12345678", scan_freq="2412")
  74     hwsim_utils.test_connectivity(dev[0], hapd0)
  75
  76     params['channel'] = '2'
  77     hapd1 = hostapd.add_ap(apdev[1]['ifname'], params)
  78     dev[0].scan_for_bss(apdev[1]['bssid'], freq=2417)
  79     dev[0].roam(apdev[1]['bssid'])
  80     hwsim_utils.test_connectivity(dev[0], hapd1)
  81     dev[0].roam(apdev[0]['bssid'])
  82     hwsim_utils.test_connectivity(dev[0], hapd0)
  83     # Wait at least two seconds to trigger the previous issue with the
  84     # disconnection callback.
  85     for i in range(3):
  86         time.sleep(0.8)
  87         hwsim_utils.test_connectivity(dev[0], hapd0)