auto-t: add test for roaming + netconfig

This test ensures IWD will continue to roam and restart netconfig if
roam conditions are met prior to netconfig finishing.

autotests/testNetconfigRoam/TestFT.psk

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+[Security]
+Passphrase=EasilyGuessedPassword

autotests/testNetconfigRoam/ft-psk-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=120000000001
+nas_identifier=dummy1
+
+wpa=2
+# Can support WPA-PSK and FT-PSK (space separated list) and/or EAP at the same
+# time but we want to force FT
+wpa_key_mgmt=FT-PSK
+wpa_pairwise=CCMP
+wpa_passphrase=EasilyGuessedPassword
+ieee80211w=1
+rsn_preauth=1
+rsn_preauth_interfaces=lo
+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=0
+# Allow locally generated FT response so we don't have to configure push/pull
+# between BSSes running as separate hostapd processes as in the test-runner
+# case.  Only works with FT-PSK, otherwise brctl needs to be installed and
+# CONFIG_BRIDGE enabled in the kernel.
+ft_psk_generate_local=1
+rkh_pull_timeout=50
+ft_over_ds=0
+ap_table_expiration_time=36000
+ap_table_max_size=10
+rrm_neighbor_report=1
+ocv=1

autotests/testNetconfigRoam/ft-psk-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=120000000002
+nas_identifier=dummy2
+
+wpa=2
+# Can support WPA-PSK and FT-PSK (space separated list) and/or EAP at the same
+# time but we want to force FT
+wpa_key_mgmt=FT-PSK
+wpa_pairwise=CCMP
+wpa_passphrase=EasilyGuessedPassword
+ieee80211w=1
+rsn_preauth=1
+rsn_preauth_interfaces=lo
+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=0
+# Allow locally generated FT response so we don't have to configure push/pull
+# between BSSes running as separate hostapd processes as in the test-runner
+# case.  Only works with FT-PSK, otherwise brctl needs to be installed and
+# CONFIG_BRIDGE enabled in the kernel.
+ft_psk_generate_local=1
+rkh_pull_timeout=50
+ft_over_ds=0
+ap_table_expiration_time=36000
+ap_table_max_size=10
+rrm_neighbor_report=1
+ocv=1

autotests/testNetconfigRoam/hw.conf

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+[SETUP]
+num_radios=3
+start_iwd=0
+hwsim_medium=yes
+
+[HOSTAPD]
+rad0=ft-psk-ccmp-1.conf
+rad1=ft-psk-ccmp-2.conf

autotests/testNetconfigRoam/main.conf

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+[General]
+EnableNetworkConfiguration=true
+RoamRetryInterval=1

autotests/testNetconfigRoam/netconfig_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 PSKAgent
+from iwd import NetworkType
+from iwd import DeviceState
+from hwsim import Hwsim
+from hostapd import HostapdCLI
+import testutil
+
+class Test(unittest.TestCase):
+    def test_roam_before_netconfig(self):
+        wd = IWD(True)
+
+        device = wd.list_devices(1)[0]
+        device.get_ordered_network('TestFT', full_scan=True)
+        device.connect_bssid(self.bss_hostapd[1].bssid)
+
+        self.bss_hostapd[1].wait_for_event(f'AP-STA-CONNECTED {device.address}')
+        device.wait_for_event("connecting (netconfig)")
+
+        roam_to = 0
+        roam_from = 1
+
+        # Roam back and forth, ensuring that the state transitions between
+        # roaming and connecting (netconfig).
+        for _ in range(0, 5):
+            self.rules[roam_to].signal = -2000
+            self.rules[roam_from].signal = -8000
+
+            # Station should internally transition to roaming, but remain in a
+            # connecting state on DBus
+            device.wait_for_event("ft-roaming")
+            self.assertEqual(device.state, DeviceState.connecting)
+
+            self.bss_hostapd[roam_to].wait_for_event(f'AP-STA-CONNECTED {device.address}')
+            device.wait_for_event("connecting (netconfig)")
+
+            tmp = roam_from
+            roam_from = roam_to
+            roam_to = tmp
+
+        self.bss_hostapd[roam_from].deauthenticate(device.address)
+        condition = 'obj.state == DeviceState.disconnected'
+        wd.wait_for_object_condition(device, condition)
+
+    def tearDown(self):
+        os.system('ip link set "' + self.bss_hostapd[0].ifname + '" down')
+        os.system('ip link set "' + self.bss_hostapd[1].ifname + '" down')
+        os.system('ip link set "' + self.bss_hostapd[0].ifname + '" up')
+        os.system('ip link set "' + self.bss_hostapd[1].ifname + '" up')
+
+    @classmethod
+    def setUpClass(cls):
+        hwsim = Hwsim()
+
+        IWD.copy_to_storage('TestFT.psk')
+
+        cls.bss_hostapd = [ HostapdCLI(config='ft-psk-ccmp-1.conf'),
+                            HostapdCLI(config='ft-psk-ccmp-2.conf') ]
+
+        rule0 = hwsim.rules.create()
+        rule0.source = cls.bss_hostapd[0].bssid
+        rule0.signal = -6000
+        rule0.enabled = True
+
+        rule1 = hwsim.rules.create()
+        rule1.source = cls.bss_hostapd[1].bssid
+        rule1.signal = -2000
+        rule1.enabled = True
+
+        cls.rules = [rule0, rule1]
+
+        cls.bss_hostapd[0].set_address('12:00:00:00:00:01')
+        cls.bss_hostapd[1].set_address('12:00:00:00:00:02')
+
+        HostapdCLI.group_neighbors(*cls.bss_hostapd)
+
+    @classmethod
+    def tearDownClass(cls):
+        IWD.clear_storage()
+        cls.bss_hostapd = None
+        cls.rules = None
+
+if __name__ == '__main__':
+    unittest.main(exit=True)