--- /dev/null
+#!/usr/bin/env python
+
+#
+# test_nhrp_topo.py
+# Part of NetDEF Topology Tests
+#
+# Copyright (c) 2019 by
+# Network Device Education Foundation, Inc. ("NetDEF")
+#
+# 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_nhrp_topo.py: Test the FRR/Quagga NHRP 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 NHRPTopo(Topo):
+ "Test topology builder"
+ def build(self, *_args, **_opts):
+ "Build function"
+ tgen = get_topogen(self)
+
+ # Create 3 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['r3'])
+ 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 = tgen.add_switch('s4')
+ switch.add_link(tgen.gears['r1'])
+
+
+def _populate_iface():
+ tgen = get_topogen()
+ cmds_tot_hub = ['ip tunnel add {0}-gre0 mode gre ttl 64 key 42 dev {0}-eth0 local 10.2.1.{1} remote 0.0.0.0',
+ 'ip link set dev {0}-gre0 up',
+ 'echo 0 > /proc/sys/net/ipv4/ip_forward_use_pmtu',
+ 'echo 1 > /proc/sys/net/ipv6/conf/{0}-eth0/disable_ipv6',
+ 'echo 1 > /proc/sys/net/ipv6/conf/{0}-gre0/disable_ipv6']
+
+ cmds_tot = ['ip tunnel add {0}-gre0 mode gre ttl 64 key 42 dev {0}-eth0 local 10.1.1.{1} remote 0.0.0.0',
+ 'ip link set dev {0}-gre0 up',
+ 'echo 0 > /proc/sys/net/ipv4/ip_forward_use_pmtu',
+ 'echo 1 > /proc/sys/net/ipv6/conf/{0}-eth0/disable_ipv6',
+ 'echo 1 > /proc/sys/net/ipv6/conf/{0}-gre0/disable_ipv6']
+
+ for cmd in cmds_tot_hub:
+ input = cmd.format('r2', '2')
+ logger.info('input: '+cmd)
+ output = tgen.net['r2'].cmd(cmd.format('r2', '2'))
+ logger.info('output: '+output);
+
+ for cmd in cmds_tot:
+ input = cmd.format('r1', '1')
+ logger.info('input: '+cmd)
+ output = tgen.net['r1'].cmd(cmd.format('r1', '1'))
+ logger.info('output: '+output);
+
+
+def setup_module(mod):
+ "Sets up the pytest environment"
+ tgen = Topogen(NHRPTopo, mod.__name__)
+ tgen.start_topology()
+
+ router_list = tgen.routers()
+ _populate_iface()
+
+ for rname, router in router_list.iteritems():
+ router.load_config(
+ TopoRouter.RD_ZEBRA,
+ os.path.join(CWD, '{}/zebra.conf'.format(rname)),
+ )
+ if rname in ('r1', 'r2'):
+ router.load_config(
+ TopoRouter.RD_NHRP,
+ os.path.join(CWD, '{}/nhrpd.conf'.format(rname))
+ )
+
+ # Initialize all routers.
+ logger.info('Launching BGP, NHRP')
+ for name in router_list:
+ router = tgen.gears[name]
+ router.start()
+
+
+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 NHRP
+ statuses as they depend on it.
+ """
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ # Check IPv4 routing tables.
+ logger.info("Checking NHRP cache and IPv4 routes for convergence")
+ router_list = tgen.routers()
+
+ for rname, router in router_list.iteritems():
+ if rname == 'r3':
+ continue
+
+ json_file = '{}/{}/nhrp4_cache.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 ip nhrp cache json', expected)
+ _, result = topotest.run_and_expect(test_func, None, count=40,
+ wait=0.5)
+
+ output = router.vtysh_cmd('show ip nhrp cache')
+ logger.info(output)
+
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert result is None, assertmsg
+
+ for rname, router in router_list.iteritems():
+ if rname == 'r3':
+ continue
+
+ json_file = '{}/{}/nhrp_route4.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 ip route nhrp json', expected)
+ _, result = topotest.run_and_expect(test_func, None, count=40,
+ wait=0.5)
+
+ output = router.vtysh_cmd('show ip route nhrp')
+ logger.info(output)
+
+ assertmsg = '"{}" JSON output mismatches'.format(router.name)
+ assert result is None, assertmsg
+
+ for rname, router in router_list.iteritems():
+ if rname == 'r3':
+ continue
+ logger.info('Dump neighbor information on {}-gre0'.format(rname))
+ output = router.run('ip neigh show')
+ logger.info(output)
+
+
+def test_nhrp_connection():
+ "Assert that the NHRP peers can find themselves."
+ tgen = get_topogen()
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ pingrouter = tgen.gears['r1']
+ logger.info('Check Ping IPv4 from R1 to R2 = 10.255.255.2)')
+ output = pingrouter.run('ping 10.255.255.2 -f -c 1000')
+ logger.info(output)
+ if '1000 packets transmitted, 1000 received' not in output:
+ assertmsg = 'expected ping IPv4 from R1 to R2 should be ok'
+ assert 0, assertmsg
+ else:
+ logger.info('Check Ping IPv4 from R1 to R2 OK')
+
+
+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))
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