--- /dev/null
+#!/usr/bin/env python
+
+#
+# test_bfd_bgp_cbit_topo3.py
+#
+# Copyright (c) 2019 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_bgp_cbit_topo3.py: Test the FRR/Quagga BFD daemon with multihop and BGP
+unnumbered.
+"""
+
+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, 4):
+ 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'])
+
+def setup_module(mod):
+ "Sets up the pytest environment"
+ tgen = Topogen(BFDTopo, mod.__name__)
+ tgen.start_topology()
+
+ router_list = tgen.routers()
+
+ for rname, router in router_list.iteritems():
+ router.load_config(
+ TopoRouter.RD_ZEBRA,
+ os.path.join(CWD, '{}/zebra.conf'.format(rname)),
+ )
+ 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()
+ tgen.stop_topology()
+
+
+def test_protocols_convergence():
+ """
+ Assert that all protocols have converged before checking for the BFD
+ statuses as they depend on it.
+ """
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ # Check IPv6 routing tables.
+ logger.info("Checking IPv6 routes for convergence")
+ for router in tgen.routers().values():
+ if router.name == 'r2':
+ continue
+ json_file = '{}/{}/ipv6_routes.json'.format(CWD, router.name)
+ if not os.path.isfile(json_file):
+ logger.info('skipping file {}'.format(json_file))
+ continue
+ expected = json.loads(open(json_file).read())
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show ipv6 route json', expected)
+ _, result = topotest.run_and_expect(test_func, None, count=40,
+ wait=0.5)
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert result is None, assertmsg
+
+
+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():
+ if router.name == 'r2':
+ continue
+ 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_bfd_loss_intermediate():
+ """
+ Assert that BFD notices the bfd link down failure.
+ but BGP entries should still be present
+ """
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ logger.info('removing IPv6 address from r2 to simulate loss of connectivity')
+ # Disable r2-eth0 ipv6 address
+ cmd = 'vtysh -c \"configure terminal\" -c \"interface r2-eth1\" -c "no ipv6 address 2001:db8:4::2/64\"'
+ tgen.net['r2'].cmd(cmd)
+
+ # Wait the minimum time we can before checking that BGP/BFD
+ # converged.
+ logger.info('waiting for BFD converge down')
+
+ # Check that BGP converged quickly.
+ for router in tgen.routers().values():
+ if router.name == 'r2':
+ continue
+ json_file = '{}/{}/peers_down.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
+
+ logger.info('waiting for BGP entries to become stale')
+ for router in tgen.routers().values():
+ if router.name == 'r2':
+ continue
+ json_file = '{}/{}/bgp_ipv6_routes_down.json'.format(CWD, router.name)
+ expected = json.loads(open(json_file).read())
+
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show bgp ipv6 json', expected)
+ _, result = topotest.run_and_expect(test_func, None, count=50, wait=1)
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert result is None, assertmsg
+
+ logger.info("Checking IPv6 routes on r1 should still be present")
+ for router in tgen.routers().values():
+ if router.name == 'r2':
+ continue
+ if router.name == 'r3':
+ continue
+ json_file = '{}/r1/ipv6_routes.json'.format(CWD)
+ expected = json.loads(open(json_file).read())
+ test_func = partial(topotest.router_json_cmp,
+ router, 'show ipv6 route json', expected)
+ _, result = topotest.run_and_expect(test_func, None, count=30,
+ wait=0.5)
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert result is None, assertmsg
+
+def test_bfd_comes_back_again():
+ """
+ Assert that BFD notices the bfd link up
+ and that ipv6 entries appear back
+ """
+ tgen = get_topogen()
+ logger.info('re-adding IPv6 address from r2 to simulate connectivity is back')
+ # adds back r2-eth0 ipv6 address
+ cmd = 'vtysh -c \"configure terminal\" -c \"interface r2-eth1\" -c "ipv6 address 2001:db8:4::2/64\"'
+ tgen.net['r2'].cmd(cmd)
+
+ # Wait the minimum time we can before checking that BGP/BFD
+ # converged.
+ logger.info('waiting for BFD to converge up')
+
+ # Check that BGP converged quickly.
+ for router in tgen.routers().values():
+ if router.name == 'r2':
+ continue
+ 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_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