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#!/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 <http://www.gnu.org/licenses/>.
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.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))
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)
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