tests: External MAC address change for connection

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

tests/hwsim/test_sta_dynamic.py

@@ -165,6 +165,55 @@ def test_sta_dynamic_ext_mac_addr_change(dev, apdev):
                          'address', prev_addr])
         subprocess.call(['ifconfig', wpas.ifname, 'up'])
 
+def test_sta_dynamic_ext_mac_addr_change_for_connection(dev, apdev):
+    """Dynamically added wpa_supplicant interface with external MAC address change for connection"""
+    params = hostapd.wpa2_params(ssid="sta-dynamic", passphrase="12345678")
+    hapd = hostapd.add_ap(apdev[0], params)
+    bssid = apdev[0]['ifname']
+
+    wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
+    wpas.interface_add("wlan5")
+    wpas.scan_for_bss(bssid, freq=2412)
+    subprocess.call(['ifconfig', wpas.ifname, 'down'])
+    if wpas.get_status_field("wpa_state") != "INTERFACE_DISABLED":
+        raise Exception("Unexpected wpa_state")
+    prev_addr = wpas.own_addr()
+    new_addr = '02:11:22:33:44:55'
+    try:
+        subprocess.call(['ip', 'link', 'set', 'dev', wpas.ifname,
+                         'address', new_addr])
+        subprocess.call(['ifconfig', wpas.ifname, 'up'])
+        wpas.connect("sta-dynamic", psk="12345678", scan_freq="2412",
+                     wait_connect=False)
+        ev = wpas.wait_event(["CTRL-EVENT-CONNECTED",
+                              "CTRL-EVENT-SCAN-RESULTS"], timeout=10)
+        if "CTRL-EVENT-SCAN-RESULTS" in ev:
+            raise Exception("Unexpected scan after MAC address change")
+        hapd.wait_sta()
+        hwsim_utils.test_connectivity(wpas, hapd)
+        sta = hapd.get_sta(new_addr)
+        if sta['addr'] != new_addr:
+            raise Exception("STA association with new address not found")
+        wpas.request("DISCONNECT")
+        wpas.wait_disconnected()
+        wpas.dump_monitor()
+        subprocess.call(['ifconfig', wpas.ifname, 'down'])
+        time.sleep(0.1)
+        res = wpas.get_bss(bssid)
+        if res is None:
+            raise Exception("BSS entry not maintained after interface disabling")
+        ev = wpas.wait_event(["CTRL-EVENT-BSS-REMOVED"], timeout=5.5)
+        if ev is None:
+            raise Exception("BSS entry not removed after interface has been disabled for a while")
+        res2 = wpas.get_bss(bssid)
+        if res2 is not None:
+            raise Exception("Unexpected BSS entry found on a disabled interface")
+    finally:
+        subprocess.call(['ifconfig', wpas.ifname, 'down'])
+        subprocess.call(['ip', 'link', 'set', 'dev', wpas.ifname,
+                         'address', prev_addr])
+        subprocess.call(['ifconfig', wpas.ifname, 'up'])
+
 def test_sta_dynamic_random_mac_addr(dev, apdev):
     """Dynamically added wpa_supplicant interface and random MAC address"""
     params = hostapd.wpa2_params(ssid="sta-dynamic", passphrase="12345678")