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| -rwxr-xr-x | smoketest/scripts/cli/test_system_conntrack.py | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_system_conntrack.py b/smoketest/scripts/cli/test_system_conntrack.py new file mode 100755 index 000000000..83861c96d --- /dev/null +++ b/smoketest/scripts/cli/test_system_conntrack.py @@ -0,0 +1,224 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2021 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 os +import unittest + +from base_vyostest_shim import VyOSUnitTestSHIM + +from vyos.configsession import ConfigSession +from vyos.util import read_file + +base_path = ['system', 'conntrack'] + +def get_sysctl(parameter): + tmp = parameter.replace(r'.', r'/') + return read_file(f'/proc/sys/{tmp}') + +class TestSystemConntrack(VyOSUnitTestSHIM.TestCase): + def tearDown(self): + self.cli_delete(base_path) + self.cli_commit() + + def test_conntrack_options(self): + conntrack_config = { + 'net.netfilter.nf_conntrack_expect_max' : { + 'cli' : ['expect-table-size'], + 'test_value' : '8192', + 'default_value' : '2048', + }, + 'net.nf_conntrack_max' :{ + 'cli' : ['table-size'], + 'test_value' : '500000', + 'default_value' : '262144', + }, + 'net.ipv4.tcp_max_syn_backlog' :{ + 'cli' : ['tcp', 'half-open-connections'], + 'test_value' : '2048', + 'default_value' : '512', + }, + 'net.netfilter.nf_conntrack_tcp_loose' :{ + 'cli' : ['tcp', 'loose'], + 'test_value' : 'disable', + 'default_value' : '1', + }, + 'net.netfilter.nf_conntrack_tcp_max_retrans' :{ + 'cli' : ['tcp', 'max-retrans'], + 'test_value' : '1024', + 'default_value' : '3', + }, + 'net.netfilter.nf_conntrack_icmp_timeout' :{ + 'cli' : ['timeout', 'icmp'], + 'test_value' : '180', + 'default_value' : '30', + }, + 'net.netfilter.nf_conntrack_generic_timeout' :{ + 'cli' : ['timeout', 'other'], + 'test_value' : '1200', + 'default_value' : '600', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_close_wait' :{ + 'cli' : ['timeout', 'tcp', 'close-wait'], + 'test_value' : '30', + 'default_value' : '60', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_close' :{ + 'cli' : ['timeout', 'tcp', 'close'], + 'test_value' : '20', + 'default_value' : '10', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_established' :{ + 'cli' : ['timeout', 'tcp', 'established'], + 'test_value' : '1000', + 'default_value' : '432000', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_fin_wait' :{ + 'cli' : ['timeout', 'tcp', 'fin-wait'], + 'test_value' : '240', + 'default_value' : '120', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_last_ack' :{ + 'cli' : ['timeout', 'tcp', 'last-ack'], + 'test_value' : '300', + 'default_value' : '30', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_syn_recv' :{ + 'cli' : ['timeout', 'tcp', 'syn-recv'], + 'test_value' : '100', + 'default_value' : '60', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_syn_sent' :{ + 'cli' : ['timeout', 'tcp', 'syn-sent'], + 'test_value' : '300', + 'default_value' : '120', + }, + 'net.netfilter.nf_conntrack_tcp_timeout_time_wait' :{ + 'cli' : ['timeout', 'tcp', 'time-wait'], + 'test_value' : '303', + 'default_value' : '120', + }, + 'net.netfilter.nf_conntrack_udp_timeout' :{ + 'cli' : ['timeout', 'udp', 'other'], + 'test_value' : '90', + 'default_value' : '30', + }, + 'net.netfilter.nf_conntrack_udp_timeout_stream' :{ + 'cli' : ['timeout', 'udp', 'stream'], + 'test_value' : '200', + 'default_value' : '180', + }, + } + + for parameter, parameter_config in conntrack_config.items(): + self.cli_set(base_path + parameter_config['cli'] + [parameter_config['test_value']]) + + # commit changes + self.cli_commit() + + # validate configuration + for parameter, parameter_config in conntrack_config.items(): + tmp = parameter_config['test_value'] + # net.netfilter.nf_conntrack_tcp_loose has a fancy "disable" value, + # make this work + if tmp == 'disable': + tmp = '0' + self.assertEqual(get_sysctl(f'{parameter}'), tmp) + + # delete all configuration options and revert back to defaults + self.cli_delete(base_path) + self.cli_commit() + + # validate configuration + for parameter, parameter_config in conntrack_config.items(): + self.assertEqual(get_sysctl(f'{parameter}'), parameter_config['default_value']) + + + def test_conntrack_module_disable(self): + # Some features are disabled by onloading the kernel helper module(s) + modules = { + 'ftp' : { + 'driver' : ['nf_nat_ftp', 'nf_conntrack_ftp'], + }, + 'h323' : { + 'driver' : ['nf_nat_h323', 'nf_conntrack_h323'], + }, + 'nfs' : { + }, + 'pptp' : { + 'driver' : ['nf_nat_pptp', 'nf_conntrack_pptp'], + }, + 'sip' : { + 'driver' : ['nf_nat_sip', 'nf_conntrack_sip'], + }, + 'sqlnet' : { + }, + 'tftp' : { + 'driver' : ['nf_nat_tftp', 'nf_conntrack_tftp'], + }, + } + + for module in modules: + self.cli_set(base_path + ['modules', module, 'disable']) + + # commit changes + self.cli_commit() + + # verify modules are no longer loaded on the system + for module, module_options in modules.items(): + if 'driver' in module_options: + for driver in module_options['driver']: + self.assertFalse(os.path.isdir(f'/sys/module/{driver}')) + + # reload modules + for module in modules: + self.cli_delete(base_path + ['modules', module, 'disable']) + + # commit changes + self.cli_commit() + + # verify modules are again loaded on the system + for module, module_options in modules.items(): + if 'driver' in module_options: + for driver in module_options['driver']: + self.assertTrue(os.path.isdir(f'/sys/module/{driver}')) + + def test_conntrack_hash_size(self): + hash_size = '65536' + hash_size_default = '32768' + + self.cli_set(base_path + ['hash-size', hash_size]) + + # commit changes + self.cli_commit() + + # verify new configuration - only effective after reboot, but + # a valid config file is sufficient + tmp = read_file('/etc/modprobe.d/vyatta_nf_conntrack.conf') + self.assertIn(hash_size, tmp) + + # Test default value by deleting the configuration + self.cli_delete(base_path + ['hash-size']) + + # commit changes + self.cli_commit() + + # verify new configuration - only effective after reboot, but + # a valid config file is sufficient + tmp = read_file('/etc/modprobe.d/vyatta_nf_conntrack.conf') + self.assertIn(hash_size_default, tmp) + +if __name__ == '__main__': + unittest.main(verbosity=2, failfast=True) |