autotests: Add a FT + 8021x roaming test

autotests/testFT-8021x-roam/TestFT.8021x

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+[Security]
+EAP-Method=TLS
+EAP-TLS-CACert=/tmp/certs/cert-ca.pem
+EAP-TLS-ClientCert=/tmp/certs/cert-client.pem
+EAP-TLS-ClientKey=/tmp/certs/cert-client-key-pkcs8.pem
+EAP-Identity=abc@example.com

autotests/testFT-8021x-roam/ft-eap-ccmp-1.conf

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+hw_mode=g
+channel=1
+ssid=TestFT
+utf8_ssid=1
+ctrl_interface=/var/run/hostapd
+r1_key_holder=000000000001
+nas_identifier=dummy1
+
+wpa=2
+# Can support WPA-EAP and FT-EAP (space separated list) at the same
+# time but we want to force FT
+wpa_key_mgmt=FT-EAP
+wpa_pairwise=CCMP
+ieee8021x=1
+eap_server=1
+eap_user_file=/tmp/certs/eap-user-tls.text
+ca_cert=/tmp/certs/cert-ca.pem
+server_cert=/tmp/certs/cert-server.pem
+private_key=/tmp/certs/cert-server-key.pem
+wpa_ptk_rekey=30
+wpa_group_rekey=80
+ieee80211w=1
+rsn_preauth=1
+disable_pmksa_caching=0
+# Allow PMK cache to be shared opportunistically among configured interfaces
+# and BSSes (i.e., all configurations within a single hostapd process).
+okc=1
+mobility_domain=1234
+reassociation_deadline=60000
+r0kh=12:00:00:00:00:01 dummy1 000102030405060708090a0b0c0d0e0f
+r0kh=12:00:00:00:00:02 dummy2 000102030405060708090a0b0c0d0e0f
+r1kh=12:00:00:00:00:01 00:00:00:00:00:01 000102030405060708090a0b0c0d0e0f
+r1kh=12:00:00:00:00:02 00:00:00:00:00:02 000102030405060708090a0b0c0d0e0f
+# Push mode only needed for 8021x, not PSK mode since msk already known
+pmk_r1_push=1
+ft_over_ds=1
+ap_table_expiration_time=36000
+ap_table_max_size=10
+rrm_neighbor_report=1

autotests/testFT-8021x-roam/ft-eap-ccmp-2.conf

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+hw_mode=g
+channel=2
+ssid=TestFT
+utf8_ssid=1
+ctrl_interface=/var/run/hostapd
+r1_key_holder=000000000002
+nas_identifier=dummy2
+
+wpa=2
+# Can support WPA-EAP and FT-EAP (space separated list) at the same
+# time but we want to force FT
+wpa_key_mgmt=FT-EAP
+wpa_pairwise=CCMP
+ieee8021x=1
+eap_server=1
+eap_user_file=/tmp/certs/eap-user-tls.text
+ca_cert=/tmp/certs/cert-ca.pem
+server_cert=/tmp/certs/cert-server.pem
+private_key=/tmp/certs/cert-server-key.pem
+wpa_ptk_rekey=30
+wpa_group_rekey=80
+ieee80211w=1
+rsn_preauth=1
+disable_pmksa_caching=0
+# Allow PMK cache to be shared opportunistically among configured interfaces
+# and BSSes (i.e., all configurations within a single hostapd process).
+okc=1
+mobility_domain=1234
+reassociation_deadline=60000
+r0kh=12:00:00:00:00:01 dummy1 000102030405060708090a0b0c0d0e0f
+r0kh=12:00:00:00:00:02 dummy2 000102030405060708090a0b0c0d0e0f
+r1kh=12:00:00:00:00:01 00:00:00:00:00:01 000102030405060708090a0b0c0d0e0f
+r1kh=12:00:00:00:00:02 00:00:00:00:00:02 000102030405060708090a0b0c0d0e0f
+# Push mode only needed for 8021x, not PSK mode since msk already known
+pmk_r1_push=1
+ft_over_ds=1
+ap_table_expiration_time=36000
+ap_table_max_size=10
+rrm_neighbor_report=1

autotests/testFT-8021x-roam/hw.conf

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+[SETUP]
+num_radios=3
+max_test_exec_interval_sec=45
+tmpfs_extra_stuff=../misc/certs
+
+[HOSTAPD]
+rad0=ft-eap-ccmp-1.conf
+rad1=ft-eap-ccmp-2.conf

autotests/testFT-8021x-roam/test.py

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+#! /usr/bin/python3
+
+import unittest
+import sys, os
+
+sys.path.append('../util')
+import iwd
+from iwd import IWD
+from iwd import NetworkType
+from hwsim import Hwsim
+from hostapd import HostapdCLI
+from wiphy import wiphy_map
+import testutil
+
+class Test(unittest.TestCase):
+    def test_roam_success(self):
+        hwsim = Hwsim()
+
+        rule0 = hwsim.rules.create()
+        rule0.source = self.bss_radio[0].addresses[0]
+        rule0.bidirectional = True
+
+        rule1 = hwsim.rules.create()
+        rule1.source = self.bss_radio[1].addresses[0]
+        rule1.bidirectional = True
+
+        wd = IWD()
+
+        device = wd.list_devices()[0];
+
+        # Check that iwd selects BSS 0 first
+        rule0.signal = -2000
+        rule1.signal = -2500
+
+        condition = 'not obj.scanning'
+        wd.wait_for_object_condition(device, condition)
+
+        device.scan()
+
+        condition = 'obj.scanning'
+        wd.wait_for_object_condition(device, condition)
+
+        condition = 'not obj.scanning'
+        wd.wait_for_object_condition(device, condition)
+
+        ordered_networks = device.get_ordered_networks()
+
+        self.assertEqual(len(ordered_networks), 1)
+        ordered_network = ordered_networks[0]
+        self.assertEqual(ordered_network.name, "TestFT")
+        self.assertEqual(ordered_network.type, NetworkType.eap)
+        self.assertEqual(ordered_network.signal_strength, -2000)
+
+        condition = 'not obj.connected'
+        wd.wait_for_object_condition(ordered_network.network_object, condition)
+
+        self.assertFalse(self.bss_hostapd[0].list_sta())
+        self.assertFalse(self.bss_hostapd[1].list_sta())
+
+        ordered_network.network_object.connect()
+
+        condition = 'obj.connected'
+        wd.wait_for_object_condition(ordered_network.network_object, condition)
+
+        self.assertTrue(self.bss_hostapd[0].list_sta())
+        self.assertFalse(self.bss_hostapd[1].list_sta())
+
+        testutil.test_iface_operstate(device.name)
+        testutil.test_ifaces_connected(self.bss_hostapd[0].ifname, device.name)
+        self.assertRaises(Exception, testutil.test_ifaces_connected,
+                          (self.bss_hostapd[1].ifname, device.name))
+
+        # Check that iwd starts transition to BSS 1 in less than 10 seconds.
+        # The 10 seconds is longer than needed to scan on just two channels
+        # but short enough that a full scan on the 2.4 + 5.8 bands supported
+        # by mac80211_hwsim will not finish.  If this times out then, but
+        # device_roam_trigger_cb has happened, it probably means that
+        # Neighbor Reports are broken.
+        rule0.signal = -8000
+
+        condition = 'obj.state == DeviceState.roaming'
+        wd.wait_for_object_condition(device, condition, 10)
+
+        # Check that iwd is on BSS 1 once out of roaming state and doesn't
+        # go through 'disconnected', 'autoconnect', 'connecting' in between
+        condition = 'obj.state != DeviceState.roaming'
+        wd.wait_for_object_condition(device, condition, 5)
+
+        self.assertEqual(device.state, iwd.DeviceState.connected)
+        self.assertTrue(self.bss_hostapd[1].list_sta())
+
+        testutil.test_iface_operstate(device.name)
+        testutil.test_ifaces_connected(self.bss_hostapd[1].ifname, device.name)
+        self.assertRaises(Exception, testutil.test_ifaces_connected,
+                          (self.bss_hostapd[0].ifname, device.name))
+
+    def test_roam_on_beacon_loss(self):
+        hwsim = Hwsim()
+
+        rule0 = hwsim.rules.create()
+        rule0.source = self.bss_radio[0].addresses[0]
+        rule0.bidirectional = True
+
+        rule1 = hwsim.rules.create()
+        rule1.source = self.bss_radio[1].addresses[0]
+        rule1.bidirectional = True
+
+        wd = IWD()
+
+        device = wd.list_devices()[0];
+
+        # Check that iwd selects BSS 0 first
+        rule0.signal = -2000
+        rule1.signal = -2500
+
+        condition = 'not obj.scanning'
+        wd.wait_for_object_condition(device, condition)
+
+        device.scan()
+
+        condition = 'obj.scanning'
+        wd.wait_for_object_condition(device, condition)
+
+        condition = 'not obj.scanning'
+        wd.wait_for_object_condition(device, condition)
+
+        ordered_networks = device.get_ordered_networks()
+
+        self.assertEqual(len(ordered_networks), 1)
+        ordered_network = ordered_networks[0]
+        self.assertEqual(ordered_network.name, "TestFT")
+        self.assertEqual(ordered_network.type, NetworkType.eap)
+        self.assertEqual(ordered_network.signal_strength, -2000)
+
+        condition = 'not obj.connected'
+        wd.wait_for_object_condition(ordered_network.network_object, condition)
+
+        self.assertFalse(self.bss_hostapd[0].list_sta())
+        self.assertFalse(self.bss_hostapd[1].list_sta())
+
+        ordered_network.network_object.connect()
+
+        condition = 'obj.connected'
+        wd.wait_for_object_condition(ordered_network.network_object, condition)
+
+        self.assertTrue(self.bss_hostapd[0].list_sta())
+        self.assertFalse(self.bss_hostapd[1].list_sta())
+
+        testutil.test_iface_operstate(device.name)
+        testutil.test_ifaces_connected(self.bss_hostapd[0].ifname, device.name)
+        self.assertRaises(Exception, testutil.test_ifaces_connected,
+                          (self.bss_hostapd[1].ifname, device.name))
+
+        # Check that iwd starts transition to BSS 1 in less than 20 seconds
+        # from a beacon loss event
+        rule0.drop = True
+        rule0.signal = -3000
+        wd.wait(2)
+        rule0.drop = False
+
+        condition = 'obj.state == DeviceState.roaming'
+        wd.wait_for_object_condition(device, condition, 20)
+
+        # Check that iwd is on BSS 1 once out of roaming state and doesn't
+        # go through 'disconnected', 'autoconnect', 'connecting' in between
+        condition = 'obj.state != DeviceState.roaming'
+        wd.wait_for_object_condition(device, condition, 5)
+
+        self.assertEqual(device.state, iwd.DeviceState.connected)
+        self.assertTrue(self.bss_hostapd[1].list_sta())
+
+        testutil.test_iface_operstate(device.name)
+        testutil.test_ifaces_connected(self.bss_hostapd[1].ifname, device.name)
+        self.assertRaises(Exception, testutil.test_ifaces_connected,
+                          (self.bss_hostapd[0].ifname, device.name))
+
+    def tearDown(self):
+        os.system('ifconfig "' + self.bss_hostapd[0].ifname + '" down')
+        os.system('ifconfig "' + self.bss_hostapd[1].ifname + '" down')
+        os.system('ifconfig "' + self.bss_hostapd[0].ifname + '" up')
+        os.system('ifconfig "' + self.bss_hostapd[1].ifname + '" up')
+
+        hwsim = Hwsim()
+        wd = IWD()
+        device = wd.list_devices()[0]
+        try:
+            device.disconnect()
+        except:
+            pass
+
+        condition = 'obj.state == DeviceState.disconnected'
+        wd.wait_for_object_condition(device, condition)
+
+        for rule in list(hwsim.rules.keys()):
+            del hwsim.rules[rule]
+
+    @classmethod
+    def setUpClass(cls):
+        IWD.copy_to_storage('TestFT.8021x')
+
+        hwsim = Hwsim()
+
+        cls.bss_hostapd = [None, None]
+        cls.bss_radio = [None, None]
+        for wname in wiphy_map:
+            wiphy = wiphy_map[wname]
+            intf = list(wiphy.values())[0]
+            if intf.config and '1' in intf.config:
+                bss_idx = 0
+            elif intf.config and '2' in intf.config:
+                bss_idx = 1
+            else:
+                continue
+
+            for path in hwsim.radios:
+                radio = hwsim.radios[path]
+                if radio.name == wname:
+                    break
+
+            cls.bss_hostapd[bss_idx] = HostapdCLI(intf)
+            cls.bss_radio[bss_idx] = radio
+
+        # Set interface addresses to those expected by hostapd config files
+        os.system('ifconfig "' + cls.bss_hostapd[0].ifname +
+                '" down hw ether 12:00:00:00:00:01 up')
+        os.system('ifconfig "' + cls.bss_hostapd[1].ifname +
+                '" down hw ether 12:00:00:00:00:02 up')
+
+        cls.bss_hostapd[0].reload()
+        cls.bss_hostapd[1].reload()
+
+        # Fill in the neighbor AP tables in both BSSes.  By default each
+        # instance knows only about current BSS, even inside one hostapd
+        # process.
+        # FT still works without the neighbor AP table but neighbor reports
+        # have to be disabled in the .conf files
+        cls.bss_hostapd[0].set_neighbor('12:00:00:00:00:02', 'TestFT',
+                '1200000000028f0000005102060603000000')
+        cls.bss_hostapd[1].set_neighbor('12:00:00:00:00:01', 'TestFT',
+                '1200000000018f0000005101060603000000')
+
+    @classmethod
+    def tearDownClass(cls):
+        IWD.clear_storage()
+
+if __name__ == '__main__':
+    unittest.main(exit=True)