tests: Unconnected station tracking

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/test_ap_track.py

@@ -0,0 +1,79 @@
+# Test cases for hostapd tracking unconnected stations
+# Copyright (c) 2015, Jouni Malinen <j@w1.fi>
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import logging
+logger = logging.getLogger()
+import subprocess
+import time
+
+import hostapd
+from wpasupplicant import WpaSupplicant
+
+def test_ap_track_sta(dev, apdev):
+    """Dualband AP tracking unconnected stations"""
+    try:
+        _test_ap_track_sta(dev, apdev)
+    finally:
+        subprocess.call(['iw', 'reg', 'set', '00'])
+
+def _test_ap_track_sta(dev, apdev):
+    params = { "ssid": "track",
+               "country_code": "US",
+               "hw_mode": "g",
+               "channel": "6",
+               "track_sta_max_num": "2" }
+    hapd = hostapd.add_ap(apdev[0]['ifname'], params)
+    bssid = apdev[0]['bssid']
+
+    params = { "ssid": "track",
+               "country_code": "US",
+               "hw_mode": "a",
+               "channel": "40",
+               "track_sta_max_num": "100",
+               "track_sta_max_age": "1" }
+    hapd2 = hostapd.add_ap(apdev[1]['ifname'], params)
+    bssid2 = apdev[1]['bssid']
+
+    for i in range(2):
+        dev[0].scan_for_bss(bssid, freq=2437, force_scan=True)
+        dev[0].scan_for_bss(bssid2, freq=5200, force_scan=True)
+        dev[1].scan_for_bss(bssid, freq=2437, force_scan=True)
+        dev[2].scan_for_bss(bssid2, freq=5200, force_scan=True)
+
+    addr0 = dev[0].own_addr()
+    addr1 = dev[1].own_addr()
+    addr2 = dev[2].own_addr()
+
+    track = hapd.request("TRACK_STA_LIST")
+    if addr0 not in track or addr1 not in track:
+        raise Exception("Station missing from 2.4 GHz tracking")
+    if addr2 in track:
+        raise Exception("Unexpected station included in 2.4 GHz tracking")
+    
+    track = hapd2.request("TRACK_STA_LIST")
+    if addr0 not in track or addr2 not in track:
+        raise Exception("Station missing from 5 GHz tracking")
+    if addr1 in track:
+        raise Exception("Unexpected station included in 5 GHz tracking")
+
+    # Test expiration
+    time.sleep(1.1)
+    track = hapd.request("TRACK_STA_LIST")
+    if addr0 not in track or addr1 not in track:
+        raise Exception("Station missing from 2.4 GHz tracking (expiration)")
+    track = hapd2.request("TRACK_STA_LIST")
+    if addr0 in track or addr2 in track:
+        raise Exception("Station not expired from 5 GHz tracking")
+
+    # Test maximum list length
+    dev[0].scan_for_bss(bssid, freq=2437, force_scan=True)
+    dev[1].scan_for_bss(bssid, freq=2437, force_scan=True)
+    dev[2].scan_for_bss(bssid, freq=2437, force_scan=True)
+    track = hapd.request("TRACK_STA_LIST")
+    if len(track.splitlines()) != 2:
+        raise Exception("Unexpected number of entries: %d" % len(track.splitlines()))
+    if addr1 not in track or addr2 not in track:
+        raise Exception("Station missing from 2.4 GHz tracking (max limit)")