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# Copyright (C) 2019-2020 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 netifaces import ifaddresses, AF_INET, AF_INET6
from vyos.configsession import ConfigSession
from vyos.ifconfig import Interface
from vyos.util import read_file
from vyos.validate import is_intf_addr_assigned, is_ipv6_link_local
class BasicInterfaceTest:
class BaseTest(unittest.TestCase):
_test_ip = False
_test_mtu = False
_test_vlan = False
_test_qinq = False
_test_ipv6 = False
_base_path = []
_options = {}
_interfaces = []
_qinq_range = ['10', '20', '30']
_vlan_range = ['100', '200', '300', '2000']
# choose IPv6 minimum MTU value for tests - this must always work
_mtu = '1280'
def setUp(self):
self.session = ConfigSession(os.getpid())
self._test_addr = ['192.0.2.1/26', '192.0.2.255/31', '192.0.2.64/32',
'2001:db8:1::ffff/64', '2001:db8:101::1/112']
self._test_mtu = False
self._options = {}
def tearDown(self):
# we should not remove ethernet from the overall CLI
if 'ethernet' in self._base_path:
for interface in self._interfaces:
# when using a dedicated interface to test via TEST_ETH environment
# variable only this one will be cleared in the end - usable to test
# ethernet interfaces via SSH
self.session.delete(self._base_path + [interface])
self.session.set(self._base_path + [interface, 'duplex', 'auto'])
self.session.set(self._base_path + [interface, 'speed', 'auto'])
self.session.set(self._base_path + [interface, 'smp-affinity', 'auto'])
else:
self.session.delete(self._base_path)
self.session.commit()
del self.session
def test_add_description(self):
"""
Check if description can be added to interface
"""
for intf in self._interfaces:
test_string='Description-Test-{}'.format(intf)
self.session.set(self._base_path + [intf, 'description', test_string])
for option in self._options.get(intf, []):
self.session.set(self._base_path + [intf] + option.split())
self.session.commit()
# Validate interface description
for intf in self._interfaces:
test_string='Description-Test-{}'.format(intf)
with open('/sys/class/net/{}/ifalias'.format(intf), 'r') as f:
tmp = f.read().rstrip()
self.assertTrue(tmp, test_string)
def test_add_address_single(self):
"""
Check if a single address can be added to interface.
"""
addr = '192.0.2.0/31'
for intf in self._interfaces:
self.session.set(self._base_path + [intf, 'address', addr])
for option in self._options.get(intf, []):
self.session.set(self._base_path + [intf] + option.split())
self.session.commit()
for intf in self._interfaces:
self.assertTrue(is_intf_addr_assigned(intf, addr))
def test_add_address_multi(self):
"""
Check if IPv4/IPv6 addresses can be added to interface.
"""
# Add address
for intf in self._interfaces:
for addr in self._test_addr:
self.session.set(self._base_path + [intf, 'address', addr])
for option in self._options.get(intf, []):
self.session.set(self._base_path + [intf] + option.split())
self.session.commit()
# Validate address
for intf in self._interfaces:
for af in AF_INET, AF_INET6:
for addr in ifaddresses(intf)[af]:
# checking link local addresses makes no sense
if is_ipv6_link_local(addr['addr']):
continue
self.assertTrue(is_intf_addr_assigned(intf, addr['addr']))
def test_ipv6_link_local(self):
""" Common function for IPv6 link-local address assignemnts """
if not self._test_ipv6:
return None
for interface in self._interfaces:
base = self._base_path + [interface]
for option in self._options.get(interface, []):
self.session.set(base + option.split())
# after commit we must have an IPv6 link-local address
self.session.commit()
for interface in self._interfaces:
for addr in ifaddresses(interface)[AF_INET6]:
self.assertTrue(is_ipv6_link_local(addr['addr']))
# disable IPv6 link-local address assignment
for interface in self._interfaces:
base = self._base_path + [interface]
self.session.set(base + ['ipv6', 'address', 'no-default-link-local'])
# after commit we must have no IPv6 link-local address
self.session.commit()
for interface in self._interfaces:
self.assertTrue(AF_INET6 not in ifaddresses(interface))
def _mtu_test(self, intf):
""" helper function to verify MTU size """
with open('/sys/class/net/{}/mtu'.format(intf), 'r') as f:
tmp = f.read().rstrip()
self.assertEqual(tmp, self._mtu)
def test_change_mtu(self):
""" Testcase if MTU can be changed on interface """
if not self._test_mtu:
return None
for intf in self._interfaces:
base = self._base_path + [intf]
self.session.set(base + ['mtu', self._mtu])
for option in self._options.get(intf, []):
self.session.set(base + option.split())
self.session.commit()
for intf in self._interfaces:
self._mtu_test(intf)
def test_8021q_vlan(self):
""" Testcase for 802.1q VLAN interfaces """
if not self._test_vlan:
return None
for interface in self._interfaces:
base = self._base_path + [interface]
for option in self._options.get(interface, []):
self.session.set(base + option.split())
for vlan in self._vlan_range:
base = self._base_path + [interface, 'vif', vlan]
self.session.set(base + ['mtu', self._mtu])
for address in self._test_addr:
self.session.set(base + ['address', address])
self.session.commit()
for intf in self._interfaces:
for vlan in self._vlan_range:
vif = f'{intf}.{vlan}'
for address in self._test_addr:
self.assertTrue(is_intf_addr_assigned(vif, address))
self._mtu_test(vif)
def test_8021ad_qinq_vlan(self):
""" Testcase for 802.1ad Q-in-Q VLAN interfaces """
if not self._test_qinq:
return None
for interface in self._interfaces:
base = self._base_path + [interface]
for option in self._options.get(interface, []):
self.session.set(base + option.split())
for vif_s in self._qinq_range:
for vif_c in self._vlan_range:
base = self._base_path + [interface, 'vif-s', vif_s, 'vif-c', vif_c]
self.session.set(base + ['mtu', self._mtu])
for address in self._test_addr:
self.session.set(base + ['address', address])
self.session.commit()
for interface in self._interfaces:
for vif_s in self._qinq_range:
for vif_c in self._vlan_range:
vif = f'{interface}.{vif_s}.{vif_c}'
for address in self._test_addr:
self.assertTrue(is_intf_addr_assigned(vif, address))
self._mtu_test(vif)
def test_ip_options(self):
""" test IP options like arp """
if not self._test_ip:
return None
for interface in self._interfaces:
arp_tmo = '300'
path = self._base_path + [interface]
for option in self._options.get(interface, []):
self.session.set(path + option.split())
# Options
self.session.set(path + ['ip', 'arp-cache-timeout', arp_tmo])
self.session.set(path + ['ip', 'disable-arp-filter'])
self.session.set(path + ['ip', 'enable-arp-accept'])
self.session.set(path + ['ip', 'enable-arp-announce'])
self.session.set(path + ['ip', 'enable-arp-ignore'])
self.session.set(path + ['ip', 'enable-proxy-arp'])
self.session.set(path + ['ip', 'proxy-arp-pvlan'])
self.session.set(path + ['ip', 'source-validation', 'loose'])
self.session.commit()
for interface in self._interfaces:
tmp = read_file(f'/proc/sys/net/ipv4/neigh/{interface}/base_reachable_time_ms')
self.assertEqual(tmp, str((int(arp_tmo) * 1000))) # tmo value is in milli seconds
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/arp_filter')
self.assertEqual('0', tmp)
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/arp_accept')
self.assertEqual('1', tmp)
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/arp_announce')
self.assertEqual('1', tmp)
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/arp_ignore')
self.assertEqual('1', tmp)
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/proxy_arp')
self.assertEqual('1', tmp)
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/proxy_arp_pvlan')
self.assertEqual('1', tmp)
tmp = read_file(f'/proc/sys/net/ipv4/conf/{interface}/rp_filter')
self.assertEqual('2', tmp)
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