tests: GTK rekeying after FILS authentication

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

tests/hwsim/test_fils.py

@@ -1409,3 +1409,50 @@ def test_fils_sk_auth_mismatch(dev, apdev):
         raise Exception("No EAP exchange seen")
     dev[0].wait_connected()
     hwsim_utils.test_connectivity(dev[0], hapd)
+
+def test_fils_auth_gtk_rekey(dev, apdev):
+    """GTK rekeying after FILS authentication"""
+    check_fils_capa(dev[0])
+    check_erp_capa(dev[0])
+
+    start_erp_as(apdev[1])
+
+    bssid = apdev[0]['bssid']
+    params = hostapd.wpa2_eap_params(ssid="fils")
+    params['wpa_key_mgmt'] = "FILS-SHA256"
+    params['auth_server_port'] = "18128"
+    params['erp_domain'] = 'example.com'
+    params['fils_realm'] = 'example.com'
+    params['wpa_group_rekey'] = '1'
+    hapd = hostapd.add_ap(apdev[0]['ifname'], params)
+
+    dev[0].scan_for_bss(bssid, freq=2412)
+    dev[0].request("ERP_FLUSH")
+    id = dev[0].connect("fils", key_mgmt="FILS-SHA256",
+                        eap="PSK", identity="psk.user@example.com",
+                        password_hex="0123456789abcdef0123456789abcdef",
+                        erp="1", scan_freq="2412")
+
+    dev[0].request("DISCONNECT")
+    dev[0].wait_disconnected()
+
+    dev[0].dump_monitor()
+    dev[0].select_network(id, freq=2412)
+    ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
+                            "CTRL-EVENT-CONNECTED"], timeout=10)
+    if ev is None:
+        raise Exception("Connection using PMKSA caching timed out")
+    if "CTRL-EVENT-EAP-STARTED" in ev:
+        raise Exception("Unexpected EAP exchange")
+    dev[0].dump_monitor()
+
+    hwsim_utils.test_connectivity(dev[0], hapd)
+    ev = dev[0].wait_event(["WPA: Group rekeying completed"], timeout=2)
+    if ev is None:
+        raise Exception("GTK rekey timed out")
+    hwsim_utils.test_connectivity(dev[0], hapd)
+
+    ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=5)
+    if ev is not None:
+        raise Exception("Rekeying failed - disconnected")
+    hwsim_utils.test_connectivity(dev[0], hapd)