tests/hwsim/test_ap_track.py

   1 # Test cases for hostapd tracking unconnected stations
   2 # Copyright (c) 2015, 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 subprocess
  10 import time
  11
  12 import hostapd
  13 from wpasupplicant import WpaSupplicant
  14
  15 def test_ap_track_sta(dev, apdev):
  16     """Dualband AP tracking unconnected stations"""
  17     try:
  18         _test_ap_track_sta(dev, apdev)
  19     finally:
  20         subprocess.call(['iw', 'reg', 'set', '00'])
  21
  22 def _test_ap_track_sta(dev, apdev):
  23     params = { "ssid": "track",
  24                "country_code": "US",
  25                "hw_mode": "g",
  26                "channel": "6",
  27                "track_sta_max_num": "2" }
  28     hapd = hostapd.add_ap(apdev[0]['ifname'], params)
  29     bssid = apdev[0]['bssid']
  30
  31     params = { "ssid": "track",
  32                "country_code": "US",
  33                "hw_mode": "a",
  34                "channel": "40",
  35                "track_sta_max_num": "100",
  36                "track_sta_max_age": "1" }
  37     hapd2 = hostapd.add_ap(apdev[1]['ifname'], params)
  38     bssid2 = apdev[1]['bssid']
  39
  40     for i in range(2):
  41         dev[0].scan_for_bss(bssid, freq=2437, force_scan=True)
  42         dev[0].scan_for_bss(bssid2, freq=5200, force_scan=True)
  43         dev[1].scan_for_bss(bssid, freq=2437, force_scan=True)
  44         dev[2].scan_for_bss(bssid2, freq=5200, force_scan=True)
  45
  46     addr0 = dev[0].own_addr()
  47     addr1 = dev[1].own_addr()
  48     addr2 = dev[2].own_addr()
  49
  50     track = hapd.request("TRACK_STA_LIST")
  51     if addr0 not in track or addr1 not in track:
  52         raise Exception("Station missing from 2.4 GHz tracking")
  53     if addr2 in track:
  54         raise Exception("Unexpected station included in 2.4 GHz tracking")
  55
  56     track = hapd2.request("TRACK_STA_LIST")
  57     if addr0 not in track or addr2 not in track:
  58         raise Exception("Station missing from 5 GHz tracking")
  59     if addr1 in track:
  60         raise Exception("Unexpected station included in 5 GHz tracking")
  61
  62     # Test expiration
  63     time.sleep(1.1)
  64     track = hapd.request("TRACK_STA_LIST")
  65     if addr0 not in track or addr1 not in track:
  66         raise Exception("Station missing from 2.4 GHz tracking (expiration)")
  67     track = hapd2.request("TRACK_STA_LIST")
  68     if addr0 in track or addr2 in track:
  69         raise Exception("Station not expired from 5 GHz tracking")
  70
  71     # Test maximum list length
  72     dev[0].scan_for_bss(bssid, freq=2437, force_scan=True)
  73     dev[1].scan_for_bss(bssid, freq=2437, force_scan=True)
  74     dev[2].scan_for_bss(bssid, freq=2437, force_scan=True)
  75     track = hapd.request("TRACK_STA_LIST")
  76     if len(track.splitlines()) != 2:
  77         raise Exception("Unexpected number of entries: %d" % len(track.splitlines()))
  78     if addr1 not in track or addr2 not in track:
  79         raise Exception("Station missing from 2.4 GHz tracking (max limit)")
  80
  81 def test_ap_track_sta_no_probe_resp(dev, apdev):
  82     """Dualband AP not replying to probes from dualband STA on 2.4 GHz"""
  83     try:
  84         _test_ap_track_sta_no_probe_resp(dev, apdev)
  85     finally:
  86         subprocess.call(['iw', 'reg', 'set', '00'])
  87
  88 def _test_ap_track_sta_no_probe_resp(dev, apdev):
  89     dev[0].flush_scan_cache()
  90
  91     params = { "ssid": "track",
  92                "country_code": "US",
  93                "hw_mode": "g",
  94                "channel": "6",
  95                "beacon_int": "10000",
  96                "no_probe_resp_if_seen_on": apdev[1]['ifname'] }
  97     hapd = hostapd.add_ap(apdev[0]['ifname'], params)
  98     bssid = apdev[0]['bssid']
  99
 100     params = { "ssid": "track",
 101                "country_code": "US",
 102                "hw_mode": "a",
 103                "channel": "40",
 104                "track_sta_max_num": "100" }
 105     hapd2 = hostapd.add_ap(apdev[1]['ifname'], params)
 106     bssid2 = apdev[1]['bssid']
 107
 108     dev[0].scan_for_bss(bssid2, freq=5200, force_scan=True)
 109     dev[1].scan_for_bss(bssid, freq=2437, force_scan=True)
 110     dev[0].scan(freq=2437, type="ONLY")
 111     dev[0].scan(freq=2437, type="ONLY")
 112
 113     if dev[0].get_bss(bssid):
 114         raise Exception("2.4 GHz AP found unexpectedly")