#!/usr/bin/env python3 # # Copyright (C) 2021-2022 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.template import is_ipv4 from vyos.util import read_file from vyos.util import is_ipv6_enabled from vyos.util import get_interface_config from vyos.validate import is_intf_addr_assigned base_path = ['system', 'ipv6'] file_forwarding = '/proc/sys/net/ipv6/conf/all/forwarding' file_disable = '/proc/sys/net/ipv6/conf/all/disable_ipv6' file_dad = '/proc/sys/net/ipv6/conf/all/accept_dad' file_multipath = '/proc/sys/net/ipv6/fib_multipath_hash_policy' class TestSystemIPv6(VyOSUnitTestSHIM.TestCase): 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(read_file(file_forwarding), '1') self.cli_set(base_path + ['disable-forwarding']) self.cli_commit() self.assertEqual(read_file(file_forwarding), '0') def test_system_ipv6_disable(self): # Verify previous "enable" state self.assertEqual(read_file(file_disable), '0') self.assertTrue(is_ipv6_enabled()) loopbacks = ['127.0.0.1', '::1'] for addr in loopbacks: self.assertTrue(is_intf_addr_assigned('lo', addr)) # 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 + ['disable']) self.cli_commit() # Verify configuration file self.assertEqual(read_file(file_disable), '1') self.assertFalse(is_ipv6_enabled()) for addr in loopbacks: if is_ipv4(addr): self.assertTrue(is_intf_addr_assigned('lo', addr)) else: self.assertFalse(is_intf_addr_assigned('lo', addr)) # T4330: Verify MTU can be changed with IPv6 disabled mtu = '1600' eth_if = 'eth0' self.cli_set(['interfaces', 'ethernet', eth_if, 'mtu', mtu]) self.cli_commit() tmp = get_interface_config(eth_if) self.assertEqual(tmp['mtu'], int(mtu)) self.cli_delete(['interfaces', 'ethernet', eth_if, 'mtu']) def test_system_ipv6_strict_dad(self): # This defaults to 1 self.assertEqual(read_file(file_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(read_file(file_dad), '2') def test_system_ipv6_multipath(self): # This defaults to 0 self.assertEqual(read_file(file_multipath), '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(read_file(file_multipath), '1') def test_system_ipv6_neighbor_table_size(self): # Maximum number of entries to keep in the ARP cache, the # default is 8192 gc_thresh3 = '/proc/sys/net/ipv6/neigh/default/gc_thresh3' gc_thresh2 = '/proc/sys/net/ipv6/neigh/default/gc_thresh2' gc_thresh1 = '/proc/sys/net/ipv6/neigh/default/gc_thresh1' self.assertEqual(read_file(gc_thresh3), '8192') self.assertEqual(read_file(gc_thresh2), '4096') self.assertEqual(read_file(gc_thresh1), '1024') for size in [1024, 2048, 4096, 8192, 16384, 32768]: self.cli_set(base_path + ['neighbor', 'table-size', str(size)]) self.cli_commit() self.assertEqual(read_file(gc_thresh3), str(size)) self.assertEqual(read_file(gc_thresh2), str(size // 2)) self.assertEqual(read_file(gc_thresh1), str(size // 8)) if __name__ == '__main__': unittest.main(verbosity=2)