#!/usr/bin/env python3 # # Copyright (C) 2021-2024 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as # published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . import unittest from base_vyostest_shim import VyOSUnitTestSHIM from vyos.configsession import ConfigSessionError from vyos.utils.system import sysctl_read from vyos.xml_ref import default_value from vyos.frrender import mgmt_daemon from vyos.frrender import zebra_daemon base_path = ['system', 'ipv6'] class TestSystemIPv6(VyOSUnitTestSHIM.TestCase): @classmethod def setUpClass(cls): super(TestSystemIPv6, cls).setUpClass() # ensure we can also run this test on a live system - so lets clean # out the current configuration :) cls.cli_delete(cls, base_path) def tearDown(self): self.cli_delete(base_path) self.cli_commit() def test_system_ipv6_forwarding(self): # Test if IPv6 forwarding can be disabled globally, default is '1' # which means forwearding enabled self.assertEqual(sysctl_read('net.ipv6.conf.all.forwarding'), '1') self.cli_set(base_path + ['disable-forwarding']) self.cli_commit() self.assertEqual(sysctl_read('net.ipv6.conf.all.forwarding'), '0') frrconfig = self.getFRRconfig('', end='', daemon=zebra_daemon) self.assertIn('no ipv6 forwarding', frrconfig) self.cli_delete(base_path + ['disable-forwarding']) self.cli_commit() self.assertEqual(sysctl_read('net.ipv6.conf.all.forwarding'), '1') frrconfig = self.getFRRconfig('', end='', daemon=zebra_daemon) self.assertNotIn('no ipv6 forwarding', frrconfig) def test_system_ipv6_strict_dad(self): # This defaults to 1 self.assertEqual(sysctl_read('net.ipv6.conf.all.accept_dad'), '1') # Do not assign any IPv6 address on interfaces, this requires a reboot # which can not be tested, but we can read the config file :) self.cli_set(base_path + ['strict-dad']) self.cli_commit() # Verify configuration file self.assertEqual(sysctl_read('net.ipv6.conf.all.accept_dad'), '2') def test_system_ipv6_multipath(self): # This defaults to 0 self.assertEqual(sysctl_read('net.ipv6.fib_multipath_hash_policy'), '0') # Do not assign any IPv6 address on interfaces, this requires a reboot # which can not be tested, but we can read the config file :) self.cli_set(base_path + ['multipath', 'layer4-hashing']) self.cli_commit() # Verify configuration file self.assertEqual(sysctl_read('net.ipv6.fib_multipath_hash_policy'), '1') def test_system_ipv6_neighbor_table_size(self): # Maximum number of entries to keep in the ARP cache, the # default is 8192 cli_default = int(default_value(base_path + ['neighbor', 'table-size'])) def _verify_gc_thres(table_size): self.assertEqual(sysctl_read('net.ipv6.neigh.default.gc_thresh3'), str(table_size)) self.assertEqual(sysctl_read('net.ipv6.neigh.default.gc_thresh2'), str(table_size // 2)) self.assertEqual(sysctl_read('net.ipv6.neigh.default.gc_thresh1'), str(table_size // 8)) _verify_gc_thres(cli_default) for size in [1024, 2048, 4096, 8192, 16384, 32768]: self.cli_set(base_path + ['neighbor', 'table-size', str(size)]) self.cli_commit() _verify_gc_thres(size) def test_system_ipv6_protocol_route_map(self): protocols = ['any', 'babel', 'bgp', 'connected', 'isis', 'kernel', 'ospfv3', 'ripng', 'static', 'table'] for protocol in protocols: route_map = 'route-map-' + protocol.replace('ospfv3', 'ospf6') self.cli_set(['policy', 'route-map', route_map, 'rule', '10', 'action', 'permit']) self.cli_set(base_path + ['protocol', protocol, 'route-map', route_map]) self.cli_commit() # Verify route-map properly applied to FRR frrconfig = self.getFRRconfig('ipv6 protocol', end='', daemon=mgmt_daemon) for protocol in protocols: # VyOS and FRR use a different name for OSPFv3 (IPv6) if protocol == 'ospfv3': protocol = 'ospf6' self.assertIn(f'ipv6 protocol {protocol} route-map route-map-{protocol}', frrconfig) # Delete route-maps self.cli_delete(['policy', 'route-map']) self.cli_delete(base_path + ['protocol']) self.cli_commit() # Verify route-map properly applied to FRR frrconfig = self.getFRRconfig('ipv6 protocol', end='', daemon=mgmt_daemon) self.assertNotIn(f'ipv6 protocol', frrconfig) def test_system_ipv6_protocol_non_existing_route_map(self): non_existing = 'non-existing6' self.cli_set(base_path + ['protocol', 'static', 'route-map', non_existing]) # VRF does yet not exist - an error must be thrown with self.assertRaises(ConfigSessionError): self.cli_commit() self.cli_set(['policy', 'route-map', non_existing, 'rule', '10', 'action', 'deny']) # Commit again self.cli_commit() def test_system_ipv6_nht(self): self.cli_set(base_path + ['nht', 'no-resolve-via-default']) self.cli_commit() # Verify CLI config applied to FRR frrconfig = self.getFRRconfig('', end='', daemon=mgmt_daemon) self.assertIn(f'no ipv6 nht resolve-via-default', frrconfig) self.cli_delete(base_path + ['nht', 'no-resolve-via-default']) self.cli_commit() # Verify CLI config removed to FRR frrconfig = self.getFRRconfig('', end='', daemon=mgmt_daemon) self.assertNotIn(f'no ipv6 nht resolve-via-default', frrconfig) if __name__ == '__main__': unittest.main(verbosity=2, failfast=True)