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test_system_ip.py
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test_system_ip.py
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#!/usr/bin/env python3
#
# Copyright (C) 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 vyos.util import read_file
base_path = ['system', 'ip']
class TestSystemIP(unittest.TestCase):
def setUp(self):
self.session = ConfigSession(os.getpid())
def tearDown(self):
self.session.delete(base_path)
self.session.commit()
del self.session
def test_system_ip_forwarding(self):
# Test if IPv4 forwarding can be disabled globally, default is '1'
# which means forwearding enabled
all_forwarding = '/proc/sys/net/ipv4/conf/all/forwarding'
self.assertEqual(read_file(all_forwarding), '1')
self.session.set(base_path + ['disable-forwarding'])
self.session.commit()
self.assertEqual(read_file(all_forwarding), '0')
def test_system_ip_multipath(self):
# Test IPv4 multipathing options, options default to off -> '0'
use_neigh = '/proc/sys/net/ipv4/fib_multipath_use_neigh'
hash_policy = '/proc/sys/net/ipv4/fib_multipath_hash_policy'
self.assertEqual(read_file(use_neigh), '0')
self.assertEqual(read_file(hash_policy), '0')
self.session.set(base_path + ['multipath', 'ignore-unreachable-nexthops'])
self.session.set(base_path + ['multipath', 'layer4-hashing'])
self.session.commit()
self.assertEqual(read_file(use_neigh), '1')
self.assertEqual(read_file(hash_policy), '1')
def test_system_ip_arp_table_size(self):
# Maximum number of entries to keep in the ARP cache, the
# default is 8k
gc_thresh3 = '/proc/sys/net/ipv4/neigh/default/gc_thresh3'
gc_thresh2 = '/proc/sys/net/ipv4/neigh/default/gc_thresh2'
gc_thresh1 = '/proc/sys/net/ipv4/neigh/default/gc_thresh1'
self.assertEqual(read_file(gc_thresh3), '8192')
self.assertEqual(read_file(gc_thresh2), '4096')
self.assertEqual(read_file(gc_thresh1), '1024')
for size in [1024, 2048, 4096, 8192, 16384, 32768]:
self.session.set(base_path + ['arp', 'table-size', str(size)])
self.session.commit()
self.assertEqual(read_file(gc_thresh3), str(size))
self.assertEqual(read_file(gc_thresh2), str(size // 2))
self.assertEqual(read_file(gc_thresh1), str(size // 8))
if __name__ == '__main__':
unittest.main(verbosity=2)

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