diff options
| -rwxr-xr-x | smoketest/scripts/cli/test_load_balancning_wan.py | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_load_balancning_wan.py b/smoketest/scripts/cli/test_load_balancning_wan.py new file mode 100755 index 000000000..edc6deb04 --- /dev/null +++ b/smoketest/scripts/cli/test_load_balancning_wan.py @@ -0,0 +1,189 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 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 os +import unittest +import time + +from base_vyostest_shim import VyOSUnitTestSHIM +from vyos.configsession import ConfigSessionError +from vyos.ifconfig import Section +from vyos.util import call +from vyos.util import cmd + + +base_path = ['load-balancing'] + + +def create_netns(name): + return call(f'sudo ip netns add {name}') + +def create_veth_pair(local='veth0', peer='ceth0'): + return call(f'sudo ip link add {local} type veth peer name {peer}') + +def move_interface_to_netns(iface, netns_name): + return call(f'sudo ip link set {iface} netns {netns_name}') + +def rename_interface(iface, new_name): + return call(f'sudo ip link set {iface} name {new_name}') + +def cmd_in_netns(netns, cmd): + return call(f'sudo ip netns exec {netns} {cmd}') + +def delete_netns(name): + return call(f'sudo ip netns del {name}') + + +class TestLoadBalancingWan(VyOSUnitTestSHIM.TestCase): + @classmethod + def setUpClass(cls): + super(TestLoadBalancingWan, 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_table_routes(self): + + ns1 = 'ns201' + ns2 = 'ns202' + iface1 = 'eth201' + iface2 = 'eth202' + container_iface1 = 'ceth0' + container_iface2 = 'ceth1' + + # Create network namespeces + create_netns(ns1) + create_netns(ns2) + create_veth_pair(iface1, container_iface1) + create_veth_pair(iface2, container_iface2) + move_interface_to_netns(container_iface1, ns1) + move_interface_to_netns(container_iface2, ns2) + call(f'sudo ip a add 203.0.113.10/24 dev {iface1}') + call(f'sudo ip a add 192.0.2.10/24 dev {iface2}') + call(f'sudo ip link set dev {iface1} up') + call(f'sudo ip link set dev {iface2} up') + cmd_in_netns(ns1, f'ip link set {container_iface1} name eth0') + cmd_in_netns(ns2, f'ip link set {container_iface2} name eth0') + cmd_in_netns(ns1, 'ip a add 203.0.113.1/24 dev eth0') + cmd_in_netns(ns2, 'ip a add 192.0.2.1/24 dev eth0') + cmd_in_netns(ns1, 'ip link set dev eth0 up') + cmd_in_netns(ns2, 'ip link set dev eth0 up') + + # Set load-balancing configuration + self.cli_set(base_path + ['wan', 'interface-health', iface1, 'failure-count', '2']) + self.cli_set(base_path + ['wan', 'interface-health', iface1, 'nexthop', '203.0.113.1']) + self.cli_set(base_path + ['wan', 'interface-health', iface1, 'success-count', '1']) + self.cli_set(base_path + ['wan', 'interface-health', iface2, 'failure-count', '2']) + self.cli_set(base_path + ['wan', 'interface-health', iface2, 'nexthop', '192.0.2.1']) + self.cli_set(base_path + ['wan', 'interface-health', iface2, 'success-count', '1']) + + # commit changes + self.cli_commit() + + time.sleep(5) + # Check default routes in tables 201, 202 + # Expected values + original = 'default via 203.0.113.1 dev eth201' + tmp = cmd('sudo ip route show table 201') + self.assertEqual(tmp, original) + + original = 'default via 192.0.2.1 dev eth202' + tmp = cmd('sudo ip route show table 202') + self.assertEqual(tmp, original) + + # Delete veth interfaces and netns + for iface in [iface1, iface2]: + call(f'sudo ip link del dev {iface}') + + delete_netns(ns1) + delete_netns(ns2) + + def test_check_chains(self): + + ns1 = 'nsA' + ns2 = 'nsB' + iface1 = 'veth1' + iface2 = 'veth2' + container_iface1 = 'ceth0' + container_iface2 = 'ceth1' + mangle_isp1 = """table ip mangle { + chain ISP_veth1 { + counter ct mark set 0xc9 + counter meta mark set 0xc9 + counter accept + } +}""" + mangle_isp2 = """table ip mangle { + chain ISP_veth2 { + counter ct mark set 0xca + counter meta mark set 0xca + counter accept + } +}""" + + # Create network namespeces + create_netns(ns1) + create_netns(ns2) + create_veth_pair(iface1, container_iface1) + create_veth_pair(iface2, container_iface2) + move_interface_to_netns(container_iface1, ns1) + move_interface_to_netns(container_iface2, ns2) + call(f'sudo ip a add 203.0.113.10/24 dev {iface1}') + call(f'sudo ip a add 192.0.2.10/24 dev {iface2}') + call(f'sudo ip link set dev {iface1} up') + call(f'sudo ip link set dev {iface2} up') + cmd_in_netns(ns1, f'ip link set {container_iface1} name eth0') + cmd_in_netns(ns2, f'ip link set {container_iface2} name eth0') + cmd_in_netns(ns1, 'ip a add 203.0.113.1/24 dev eth0') + cmd_in_netns(ns2, 'ip a add 192.0.2.1/24 dev eth0') + cmd_in_netns(ns1, 'ip link set dev eth0 up') + cmd_in_netns(ns2, 'ip link set dev eth0 up') + + # Set load-balancing configuration + self.cli_set(base_path + ['wan', 'interface-health', iface1, 'failure-count', '2']) + self.cli_set(base_path + ['wan', 'interface-health', iface1, 'nexthop', '203.0.113.1']) + self.cli_set(base_path + ['wan', 'interface-health', iface1, 'success-count', '1']) + self.cli_set(base_path + ['wan', 'interface-health', iface2, 'failure-count', '2']) + self.cli_set(base_path + ['wan', 'interface-health', iface2, 'nexthop', '192.0.2.1']) + self.cli_set(base_path + ['wan', 'interface-health', iface2, 'success-count', '1']) + + # commit changes + self.cli_commit() + + time.sleep(5) + # Check chains + #call('sudo nft list ruleset') + tmp = cmd(f'sudo nft -s list chain mangle ISP_{iface1}') + self.assertEqual(tmp, mangle_isp1) + + tmp = cmd(f'sudo nft -s list chain mangle ISP_{iface2}') + self.assertEqual(tmp, mangle_isp2) + + # Delete veth interfaces and netns + for iface in [iface1, iface2]: + call(f'sudo ip link del dev {iface}') + + delete_netns(ns1) + delete_netns(ns2) + + +if __name__ == '__main__': + unittest.main(verbosity=2) |