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@ -3297,6 +3297,101 @@ class NetworkdIPv6PrefixTests(unittest.TestCase, Utilities):
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print(output)
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self.assertRegex(output, '2001:db8:0:1::/64 proto ra')
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class NetworkdMTUTests(unittest.TestCase, Utilities):
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links = ['dummy98']
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units = [
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'12-dummy.netdev',
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'12-dummy-mtu.netdev',
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'12-dummy-mtu.link',
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'12-dummy.network',
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]
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def setUp(self):
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remove_links(self.links)
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stop_networkd(show_logs=False)
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def tearDown(self):
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remove_log_file()
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remove_links(self.links)
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remove_unit_from_networkd_path(self.units)
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stop_networkd(show_logs=True)
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def check_mtu(self, mtu, ipv6_mtu=None, reset=True):
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if not ipv6_mtu:
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ipv6_mtu = mtu
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# test normal start
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start_networkd()
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self.wait_online(['dummy98:routable'])
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self.assertEqual(read_ipv6_sysctl_attr('dummy98', 'mtu'), ipv6_mtu)
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self.assertEqual(read_link_attr('dummy98', 'mtu'), mtu)
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# test normal restart
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restart_networkd()
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self.wait_online(['dummy98:routable'])
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self.assertEqual(read_ipv6_sysctl_attr('dummy98', 'mtu'), ipv6_mtu)
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self.assertEqual(read_link_attr('dummy98', 'mtu'), mtu)
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if reset:
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self.reset_check_mtu(mtu, ipv6_mtu)
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def reset_check_mtu(self, mtu, ipv6_mtu=None):
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''' test setting mtu/ipv6_mtu with interface already up '''
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stop_networkd()
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# note - changing the device mtu resets the ipv6 mtu
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run('ip link set up mtu 1501 dev dummy98')
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run('ip link set up mtu 1500 dev dummy98')
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self.assertEqual(read_link_attr('dummy98', 'mtu'), '1500')
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self.assertEqual(read_ipv6_sysctl_attr('dummy98', 'mtu'), '1500')
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self.check_mtu(mtu, ipv6_mtu, reset=False)
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def test_mtu_network(self):
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copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/mtu.conf')
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self.check_mtu('1600')
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def test_mtu_netdev(self):
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copy_unit_to_networkd_unit_path('12-dummy-mtu.netdev', '12-dummy.network', dropins=False)
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# note - MTU set by .netdev happens ONLY at device creation!
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self.check_mtu('1600', reset=False)
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def test_mtu_link(self):
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copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy-mtu.link', '12-dummy.network', dropins=False)
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# must reload udev because it only picks up new files after 3 second delay
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call('udevadm control --reload')
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# note - MTU set by .link happens ONLY at udev processing of device 'add' uevent!
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self.check_mtu('1600', reset=False)
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def test_ipv6_mtu(self):
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''' set ipv6 mtu without setting device mtu '''
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copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/ipv6-mtu-1400.conf')
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self.check_mtu('1500', '1400')
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def test_ipv6_mtu_toolarge(self):
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''' try set ipv6 mtu over device mtu (it shouldn't work) '''
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copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/ipv6-mtu-1550.conf')
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self.check_mtu('1500', '1500')
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def test_mtu_network_ipv6_mtu(self):
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''' set ipv6 mtu and set device mtu via network file '''
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copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy.network.d/mtu.conf', '12-dummy.network.d/ipv6-mtu-1550.conf')
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self.check_mtu('1600', '1550')
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def test_mtu_netdev_ipv6_mtu(self):
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''' set ipv6 mtu and set device mtu via netdev file '''
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copy_unit_to_networkd_unit_path('12-dummy-mtu.netdev', '12-dummy.network.d/ipv6-mtu-1550.conf')
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self.check_mtu('1600', '1550', reset=False)
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def test_mtu_link_ipv6_mtu(self):
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''' set ipv6 mtu and set device mtu via link file '''
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copy_unit_to_networkd_unit_path('12-dummy.netdev', '12-dummy-mtu.link', '12-dummy.network.d/ipv6-mtu-1550.conf')
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# must reload udev because it only picks up new files after 3 second delay
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call('udevadm control --reload')
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self.check_mtu('1600', '1550', reset=False)
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('--build-dir', help='Path to build dir', dest='build_dir')
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