tests: Add roaming test cases

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

tests/hwsim/test_ap_roam.py

@@ -0,0 +1,45 @@
+#!/usr/bin/python
+#
+# Roaming tests
+# Copyright (c) 2013, Jouni Malinen <j@w1.fi>
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import time
+import subprocess
+import logging
+logger = logging.getLogger(__name__)
+
+import hwsim_utils
+import hostapd
+
+ap_ifname = 'wlan2'
+bssid = "02:00:00:00:02:00"
+ap2_ifname = 'wlan3'
+bssid2 = "02:00:00:00:03:00"
+
+def test_ap_roam_open(dev):
+    """Roam between two open APs"""
+    hostapd.add_ap(ap_ifname, { "ssid": "test-open" })
+    dev[0].connect("test-open", key_mgmt="NONE")
+    hwsim_utils.test_connectivity(dev[0].ifname, ap_ifname)
+    hostapd.add_ap(ap2_ifname, { "ssid": "test-open" })
+    dev[0].scan(type="ONLY")
+    dev[0].roam(bssid2)
+    hwsim_utils.test_connectivity(dev[0].ifname, ap2_ifname)
+    dev[0].roam(bssid)
+    hwsim_utils.test_connectivity(dev[0].ifname, ap_ifname)
+
+def test_ap_roam_wpa2_psk(dev):
+    """Roam between two WPA2-PSK APs"""
+    params = hostapd.wpa2_params(ssid="test-wpa2-psk", passphrase="12345678")
+    hostapd.add_ap(ap_ifname, params)
+    dev[0].connect("test-wpa2-psk", psk="12345678")
+    hwsim_utils.test_connectivity(dev[0].ifname, ap_ifname)
+    hostapd.add_ap(ap2_ifname, params)
+    dev[0].scan(type="ONLY")
+    dev[0].roam(bssid2)
+    hwsim_utils.test_connectivity(dev[0].ifname, ap2_ifname)
+    dev[0].roam(bssid)
+    hwsim_utils.test_connectivity(dev[0].ifname, ap_ifname)

tests/hwsim/wpasupplicant.py

@@ -315,3 +315,23 @@ class WpaSupplicant:
         if wep_key0:
             self.set_network(id, "wep_key0", wep_key0)
         self.connect_network(id)
+
+    def scan(self, type=None):
+        if type:
+            cmd = "SCAN TYPE=" + type
+        else:
+            cmd = "SCAN"
+        self.dump_monitor()
+        if not "OK" in self.request(cmd):
+            raise Exception("Failed to trigger scan")
+        ev = self.wait_event(["CTRL-EVENT-SCAN-RESULTS"], 15)
+        if ev is None:
+            raise Exception("Scan timed out")
+
+    def roam(self, bssid):
+        self.dump_monitor()
+        self.request("ROAM " + bssid)
+        ev = self.wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
+        if ev is None:
+            raise Exception("Roaming with the AP timed out")
+        self.dump_monitor()