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#!/usr/bin/env python3
#
# Copyright (C) 2020-2023 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 vyos.configsession import ConfigSessionError
from vyos.ifconfig import Interface
from vyos.utils.network import get_bridge_fdb
from vyos.utils.network import get_interface_config
from vyos.utils.network import interface_exists
from vyos.utils.network import get_vxlan_vlan_tunnels
from vyos.utils.network import get_vxlan_vni_filter
from vyos.template import is_ipv6
from base_interfaces_test import BasicInterfaceTest
class VXLANInterfaceTest(BasicInterfaceTest.TestCase):
@classmethod
def setUpClass(cls):
cls._base_path = ['interfaces', 'vxlan']
cls._options = {
'vxlan10': ['vni 10', 'remote 127.0.0.2'],
'vxlan20': ['vni 20', 'group 239.1.1.1', 'source-interface eth0'],
'vxlan30': ['vni 30', 'remote 2001:db8:2000::1', 'source-address 2001:db8:1000::1', 'parameters ipv6 flowlabel 0x1000'],
'vxlan40': ['vni 40', 'remote 127.0.0.2', 'remote 127.0.0.3'],
'vxlan50': ['vni 50', 'remote 2001:db8:2000::1', 'remote 2001:db8:2000::2', 'parameters ipv6 flowlabel 0x1000'],
}
cls._interfaces = list(cls._options)
# call base-classes classmethod
super(VXLANInterfaceTest, cls).setUpClass()
def test_vxlan_parameters(self):
tos = '40'
ttl = 20
for intf in self._interfaces:
for option in self._options.get(intf, []):
self.cli_set(self._base_path + [intf] + option.split())
self.cli_set(self._base_path + [intf, 'parameters', 'ip', 'df', 'set'])
self.cli_set(self._base_path + [intf, 'parameters', 'ip', 'tos', tos])
self.cli_set(self._base_path + [intf, 'parameters', 'ip', 'ttl', str(ttl)])
ttl += 10
self.cli_commit()
ttl = 20
for interface in self._interfaces:
options = get_interface_config(interface)
bridge = get_bridge_fdb(interface)
vni = options['linkinfo']['info_data']['id']
self.assertIn(f'vni {vni}', self._options[interface])
if any('source-interface' in s for s in self._options[interface]):
link = options['linkinfo']['info_data']['link']
self.assertIn(f'source-interface {link}', self._options[interface])
# Verify source-address setting was properly configured on the Kernel
if any('source-address' in s for s in self._options[interface]):
for s in self._options[interface]:
if 'source-address' in s:
address = s.split()[-1]
if is_ipv6(address):
tmp = options['linkinfo']['info_data']['local6']
else:
tmp = options['linkinfo']['info_data']['local']
self.assertIn(f'source-address {tmp}', self._options[interface])
# Verify remote setting was properly configured on the Kernel
if any('remote' in s for s in self._options[interface]):
for s in self._options[interface]:
if 'remote' in s:
for fdb in bridge:
if 'mac' in fdb and fdb['mac'] == '00:00:00:00:00:00':
remote = fdb['dst']
self.assertIn(f'remote {remote}', self._options[interface])
if any('group' in s for s in self._options[interface]):
group = options['linkinfo']['info_data']['group']
self.assertIn(f'group {group}', self._options[interface])
if any('flowlabel' in s for s in self._options[interface]):
label = options['linkinfo']['info_data']['label']
self.assertIn(f'parameters ipv6 flowlabel {label}', self._options[interface])
if any('external' in s for s in self._options[interface]):
self.assertTrue(options['linkinfo']['info_data']['external'])
self.assertEqual('vxlan', options['linkinfo']['info_kind'])
self.assertEqual('set', options['linkinfo']['info_data']['df'])
self.assertEqual(f'0x{tos}', options['linkinfo']['info_data']['tos'])
self.assertEqual(ttl, options['linkinfo']['info_data']['ttl'])
self.assertEqual(Interface(interface).get_admin_state(), 'up')
ttl += 10
def test_vxlan_external(self):
interface = 'vxlan0'
source_address = '192.0.2.1'
self.cli_set(self._base_path + [interface, 'parameters', 'external'])
self.cli_set(self._base_path + [interface, 'source-address', source_address])
# Both 'VNI' and 'external' can not be specified at the same time.
self.cli_set(self._base_path + [interface, 'vni', '111'])
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_delete(self._base_path + [interface, 'vni'])
# Now add some more interfaces - this must fail and a CLI error needs
# to be generated as Linux can only handle one VXLAN tunnel when using
# external mode.
for intf in self._interfaces:
for option in self._options.get(intf, []):
self.cli_set(self._base_path + [intf] + option.split())
with self.assertRaises(ConfigSessionError):
self.cli_commit()
# Remove those test interfaces again
for intf in self._interfaces:
self.cli_delete(self._base_path + [intf])
self.cli_commit()
options = get_interface_config(interface)
self.assertTrue(options['linkinfo']['info_data']['external'])
self.assertEqual('vxlan', options['linkinfo']['info_kind'])
def test_vxlan_vlan_vni_mapping(self):
bridge = 'br0'
interface = 'vxlan0'
source_interface = 'eth0'
vlan_to_vni = {
'10': '10010',
'11': '10011',
'12': '10012',
'13': '10013',
'20': '10020',
'30': '10030',
'31': '10031',
}
self.cli_set(self._base_path + [interface, 'parameters', 'external'])
self.cli_set(self._base_path + [interface, 'parameters', 'vni-filter'])
self.cli_set(self._base_path + [interface, 'source-interface', source_interface])
for vlan, vni in vlan_to_vni.items():
self.cli_set(self._base_path + [interface, 'vlan-to-vni', vlan, 'vni', vni])
# This must fail as this VXLAN interface is not associated with any bridge
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(['interfaces', 'bridge', bridge, 'member', 'interface', interface])
# It is not allowed to use duplicate VNIs
self.cli_set(self._base_path + [interface, 'vlan-to-vni', '11', 'vni', vlan_to_vni['10']])
with self.assertRaises(ConfigSessionError):
self.cli_commit()
# restore VLAN - VNI mappings
for vlan, vni in vlan_to_vni.items():
self.cli_set(self._base_path + [interface, 'vlan-to-vni', vlan, 'vni', vni])
# commit configuration
self.cli_commit()
self.assertTrue(interface_exists(bridge))
self.assertTrue(interface_exists(interface))
tmp = get_interface_config(interface)
self.assertEqual(tmp['master'], bridge)
self.assertFalse(tmp['linkinfo']['info_slave_data']['neigh_suppress'])
tmp = get_vxlan_vlan_tunnels('vxlan0')
self.assertEqual(tmp, list(vlan_to_vni))
self.cli_delete(['interfaces', 'bridge', bridge])
def test_vxlan_neighbor_suppress(self):
bridge = 'br555'
interface = 'vxlan555'
source_interface = 'eth0'
self.cli_set(self._base_path + [interface, 'parameters', 'external'])
self.cli_set(self._base_path + [interface, 'source-interface', source_interface])
self.cli_set(self._base_path + [interface, 'parameters', 'neighbor-suppress'])
# This must fail as this VXLAN interface is not associated with any bridge
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(['interfaces', 'bridge', bridge, 'member', 'interface', interface])
# commit configuration
self.cli_commit()
self.assertTrue(interface_exists(bridge))
self.assertTrue(interface_exists(interface))
tmp = get_interface_config(interface)
self.assertEqual(tmp['master'], bridge)
self.assertTrue(tmp['linkinfo']['info_slave_data']['neigh_suppress'])
self.assertFalse(tmp['linkinfo']['info_slave_data']['learning'])
# Remove neighbor suppress configuration and re-test
self.cli_delete(self._base_path + [interface, 'parameters', 'neighbor-suppress'])
# commit configuration
self.cli_commit()
tmp = get_interface_config(interface)
self.assertEqual(tmp['master'], bridge)
self.assertFalse(tmp['linkinfo']['info_slave_data']['neigh_suppress'])
self.assertTrue(tmp['linkinfo']['info_slave_data']['learning'])
self.cli_delete(['interfaces', 'bridge', bridge])
def test_vxlan_vni_filter(self):
interfaces = ['vxlan987', 'vxlan986', 'vxlan985']
source_address = '192.0.2.77'
for interface in interfaces:
self.cli_set(self._base_path + [interface, 'parameters', 'external'])
self.cli_set(self._base_path + [interface, 'source-address', source_address])
# This must fail as there can only be one "external" VXLAN device unless "vni-filter" is defined
with self.assertRaises(ConfigSessionError):
self.cli_commit()
# Enable "vni-filter" on the first VXLAN interface
self.cli_set(self._base_path + [interfaces[0], 'parameters', 'vni-filter'])
# This must fail as if it's enabled on one VXLAN interface, it must be enabled on all
# VXLAN interfaces
with self.assertRaises(ConfigSessionError):
self.cli_commit()
for interface in interfaces:
self.cli_set(self._base_path + [interface, 'parameters', 'vni-filter'])
# commit configuration
self.cli_commit()
for interface in interfaces:
self.assertTrue(interface_exists(interface))
tmp = get_interface_config(interface)
self.assertTrue(tmp['linkinfo']['info_data']['vnifilter'])
def test_vxlan_vni_filter_add_remove(self):
interface = 'vxlan987'
source_address = '192.0.2.66'
bridge = 'br0'
self.cli_set(self._base_path + [interface, 'parameters', 'external'])
self.cli_set(self._base_path + [interface, 'source-address', source_address])
self.cli_set(self._base_path + [interface, 'parameters', 'vni-filter'])
# commit configuration
self.cli_commit()
# Check if VXLAN interface got created
self.assertTrue(interface_exists(interface))
# VNI filter configured?
tmp = get_interface_config(interface)
self.assertTrue(tmp['linkinfo']['info_data']['vnifilter'])
# Now create some VLAN mappings and VNI filter
vlan_to_vni = {
'50': '10050',
'51': '10051',
'52': '10052',
'53': '10053',
'54': '10054',
'60': '10060',
'69': '10069',
}
for vlan, vni in vlan_to_vni.items():
self.cli_set(self._base_path + [interface, 'vlan-to-vni', vlan, 'vni', vni])
# we need a bridge ...
self.cli_set(['interfaces', 'bridge', bridge, 'member', 'interface', interface])
# commit configuration
self.cli_commit()
# All VNIs configured?
tmp = get_vxlan_vni_filter(interface)
self.assertListEqual(list(vlan_to_vni.values()), tmp)
#
# Delete a VLAN mappings and check if all VNIs are properly set up
#
vlan_to_vni.popitem()
self.cli_delete(self._base_path + [interface, 'vlan-to-vni'])
for vlan, vni in vlan_to_vni.items():
self.cli_set(self._base_path + [interface, 'vlan-to-vni', vlan, 'vni', vni])
# commit configuration
self.cli_commit()
# All VNIs configured?
tmp = get_vxlan_vni_filter(interface)
self.assertListEqual(list(vlan_to_vni.values()), tmp)
self.cli_delete(['interfaces', 'bridge', bridge])
if __name__ == '__main__':
unittest.main(verbosity=2)
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