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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 vyos.configsession import ConfigSession
from netifaces import ifaddresses, AF_INET, AF_INET6
from vyos.validate import is_intf_addr_assigned, is_ipv6_link_local
from vyos.ifconfig import Interface
class BasicInterfaceTest:
class BaseTest(unittest.TestCase):
_test_mtu = False
_base_path = []
_options = {}
_interfaces = []
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 intf 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 + [intf])
self.session.set(self._base_path + [intf])
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_change_mtu(self):
"""
Check if MTU can be changed on interface.
Test MTU size will be 1400 bytes.
"""
if self._test_mtu is False:
return None
# choose MTU which works on every interface - 1280 is minimum for IPv6 so
# it will always work.
mtu = '1280'
for intf in self._interfaces:
self.session.set(self._base_path + [intf, 'mtu', mtu])
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:
with open('/sys/class/net/{}/mtu'.format(intf), 'r') as f:
tmp = f.read().rstrip()
self.assertEqual(tmp, mtu)
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