--- /dev/null
+#!/usr/bin/env python
+
+#
+# test_bfd_vrf_topo1.py
+# Part of NetDEF Topology Tests
+#
+# Copyright (c) 2018 by
+# Network Device Education Foundation, Inc. ("NetDEF")
+# Copyright (c) 2019 by 6WIND
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+#
+
+"""
+test_bfd_vrf_topo1.py: Test the FRR/Quagga BFD daemon.
+"""
+
+import os
+import sys
+import json
+from functools import partial
+import pytest
+
+# Save the Current Working Directory to find configuration files.
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, '../'))
+
+# pylint: disable=C0413
+# Import topogen and topotest helpers
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.topolog import logger
+
+# Required to instantiate the topology builder class.
+from mininet.topo import Topo
+
+class BFDTopo(Topo):
+ "Test topology builder"
+ def build(self, *_args, **_opts):
+ "Build function"
+ tgen = get_topogen(self)
+
+ # Create 4 routers
+ for routern in range(1, 5):
+ tgen.add_router('r{}'.format(routern))
+
+ switch = tgen.add_switch('s1')
+ switch.add_link(tgen.gears['r1'])
+ switch.add_link(tgen.gears['r2'])
+
+ switch = tgen.add_switch('s2')
+ switch.add_link(tgen.gears['r2'])
+ switch.add_link(tgen.gears['r3'])
+
+ switch = tgen.add_switch('s3')
+ switch.add_link(tgen.gears['r2'])
+ switch.add_link(tgen.gears['r4'])
+
+
+def setup_module(mod):
+ "Sets up the pytest environment"
+ tgen = Topogen(BFDTopo, mod.__name__)
+ tgen.start_topology()
+
+ router_list = tgen.routers()
+
+ # check for zebra capability
+ for rname, router in router_list.iteritems():
+ if router.check_capability(
+ TopoRouter.RD_ZEBRA,
+ '--vrfwnetns'
+ ) == False:
+ return pytest.skip('Skipping BFD Topo1 VRF NETNS feature. VRF NETNS backend not available on FRR')
+
+ if os.system('ip netns list') != 0:
+ return pytest.skip('Skipping BFD Topo1 VRF NETNS Test. NETNS not available on System')
+
+ logger.info('Testing with VRF Namespace support')
+
+ cmds = ['if [ -e /var/run/netns/{0}-cust1 ] ; then ip netns del {0}-cust1 ; fi',
+ 'ip netns add {0}-cust1',
+ 'ip link set dev {0}-eth0 netns {0}-cust1',
+ 'ip netns exec {0}-cust1 ifconfig {0}-eth0 up']
+ cmds2 = ['ip link set dev {0}-eth1 netns {0}-cust1',
+ 'ip netns exec {0}-cust1 ifconfig {0}-eth1 up',
+ 'ip link set dev {0}-eth2 netns {0}-cust1',
+ 'ip netns exec {0}-cust1 ifconfig {0}-eth2 up']
+
+ for rname, router in router_list.iteritems():
+ # create VRF rx-cust1 and link rx-eth0 to rx-cust1
+ for cmd in cmds:
+ output = tgen.net[rname].cmd(cmd.format(rname))
+ if rname == 'r2':
+ for cmd in cmds2:
+ output = tgen.net[rname].cmd(cmd.format(rname))
+
+ for rname, router in router_list.iteritems():
+ router.load_config(
+ TopoRouter.RD_ZEBRA,
+ os.path.join(CWD, '{}/zebra.conf'.format(rname)),
+ '--vrfwnetns'
+ )
+ router.load_config(
+ TopoRouter.RD_BFD,
+ os.path.join(CWD, '{}/bfdd.conf'.format(rname))
+ )
+ router.load_config(
+ TopoRouter.RD_BGP,
+ os.path.join(CWD, '{}/bgpd.conf'.format(rname))
+ )
+
+ # Initialize all routers.
+ tgen.start_router()
+
+ # Verify that we are using the proper version and that the BFD
+ # daemon exists.
+ for router in router_list.values():
+ # Check for Version
+ if router.has_version('<', '5.1'):
+ tgen.set_error('Unsupported FRR version')
+ break
+
+def teardown_module(_mod):
+ "Teardown the pytest environment"
+ tgen = get_topogen()
+ # move back rx-eth0 to default VRF
+ # delete rx-vrf
+ cmds = ['ip netns exec {0}-cust1 ip link set {0}-eth0 netns 1',
+ 'ip netns delete {0}-cust1']
+ cmds2 = ['ip netns exec {0}-cust1 ip link set {0}-eth1 netns 1',
+ 'ip netns exec {0}-cust2 ip link set {0}-eth1 netns 1']
+
+ router_list = tgen.routers()
+ for rname, router in router_list.iteritems():
+ if rname == 'r2':
+ for cmd in cmds2:
+ tgen.net[rname].cmd(cmd.format(rname))
+ for cmd in cmds:
+ tgen.net[rname].cmd(cmd.format(rname))
+ tgen.stop_topology()
+
+def test_bfd_connection():
+ "Assert that the BFD peers can find themselves."
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ logger.info('waiting for bfd peers to go up')
+ for router in tgen.routers().values():
+ json_file = '{}/{}/peers.json'.format(CWD, router.name)
+ expected = json.loads(open(json_file).read())
+
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show bfd peers json', expected)
+ _, result = topotest.run_and_expect(test_func, None, count=8, wait=0.5)
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert result is None, assertmsg
+
+
+def test_bgp_convergence():
+ "Assert that BGP is converging."
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ logger.info('waiting for bgp peers to go up')
+
+ for router in tgen.routers().values():
+ ref_file = '{}/{}/bgp_summary.json'.format(CWD, router.name)
+ expected = json.loads(open(ref_file).read())
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show ip bgp vrf {}-cust1 summary json'.format(router.name), expected)
+ _, res = topotest.run_and_expect(test_func, None, count=125, wait=1.0)
+ assertmsg = '{}: bgp did not converge'.format(router.name)
+ assert res is None, assertmsg
+
+
+def test_bgp_fast_convergence():
+ "Assert that BGP is converging before setting a link down."
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ logger.info('waiting for bgp peers converge')
+
+ for router in tgen.routers().values():
+ ref_file = '{}/{}/bgp_prefixes.json'.format(CWD, router.name)
+ expected = json.loads(open(ref_file).read())
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show ip bgp vrf {}-cust1 json'.format(router.name), expected)
+ _, res = topotest.run_and_expect(test_func, None, count=40, wait=0.5)
+ assertmsg = '{}: bgp did not converge'.format(router.name)
+ assert res is None, assertmsg
+
+
+def test_bfd_fast_convergence():
+ """
+ Assert that BFD notices the link down after simulating network
+ failure.
+ """
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ # Disable r2-eth0 link
+ router2 = tgen.gears['r2']
+ topotest.interface_set_status(router2, 'r2-eth0', ifaceaction=False, vrf_name='r2-cust1')
+
+ # Wait the minimum time we can before checking that BGP/BFD
+ # converged.
+ logger.info('waiting for BFD converge')
+
+ # Check that BGP converged quickly.
+ for router in tgen.routers().values():
+ json_file = '{}/{}/peers.json'.format(CWD, router.name)
+ expected = json.loads(open(json_file).read())
+
+ # Load the same file as previous test, but expect R1 to be down.
+ if router.name == 'r1':
+ for peer in expected:
+ if peer['peer'] == '192.168.0.2':
+ peer['status'] = 'down'
+ else:
+ for peer in expected:
+ if peer['peer'] == '192.168.0.1':
+ peer['status'] = 'down'
+
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show bfd peers json', expected)
+ _, res = topotest.run_and_expect(test_func, None, count=20, wait=0.5)
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert res is None, assertmsg
+
+
+def test_bgp_fast_reconvergence():
+ "Assert that BGP is converging after setting a link down."
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ logger.info('waiting for BGP re convergence')
+
+ # Check that BGP converged quickly.
+ for router in tgen.routers().values():
+ ref_file = '{}/{}/bgp_prefixes.json'.format(CWD, router.name)
+ expected = json.loads(open(ref_file).read())
+
+ # Load the same file as previous test, but set networks to None
+ # to test absence.
+ if router.name == 'r1':
+ expected['routes']['10.254.254.2/32'] = None
+ expected['routes']['10.254.254.3/32'] = None
+ expected['routes']['10.254.254.4/32'] = None
+ else:
+ expected['routes']['10.254.254.1/32'] = None
+
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show ip bgp vrf {}-cust1 json'.format(router.name), expected)
+ _, res = topotest.run_and_expect(
+ test_func,
+ None,
+ count=3,
+ wait=1
+ )
+ assertmsg = '{}: bgp did not converge'.format(router.name)
+ assert res is None, assertmsg
+
+
+def test_memory_leak():
+ "Run the memory leak test and report results."
+ tgen = get_topogen()
+ if not tgen.is_memleak_enabled():
+ pytest.skip('Memory leak test/report is disabled')
+
+ tgen.report_memory_leaks()
+
+
+if __name__ == '__main__':
+ args = ["-s"] + sys.argv[1:]
+ sys.exit(pytest.main(args))
projects / matthieu / frr.git / commitdiff
