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+#!/usr/bin/env python
+
+#
+# test_pbr_topo1.py
+#
+# Copyright (c) 2020 by
+# Cumulus Networks, Inc.
+# Donald Sharp
+#
+# 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_pbr_topo1.py: Testing PBR
+
+"""
+
+import os
+import sys
+import pytest
+import json
+import platform
+from functools import partial
+
+# 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
+from lib.common_config import shutdown_bringup_interface
+
+# Required to instantiate the topology builder class.
+
+pytestmark = [pytest.mark.pbrd]
+
+#####################################################
+##
+## Network Topology Definition
+##
+#####################################################
+
+
+def build_topo(tgen):
+ "Build function"
+
+ # Populate routers
+ for routern in range(1, 2):
+ tgen.add_router("r{}".format(routern))
+
+ # Populate switches
+ for switchn in range(1, 6):
+ switch = tgen.add_switch("sw{}".format(switchn))
+ switch.add_link(tgen.gears["r1"])
+
+
+#####################################################
+##
+## Tests starting
+##
+#####################################################
+
+
+def setup_module(module):
+ "Setup topology"
+ tgen = Topogen(build_topo, module.__name__)
+ tgen.start_topology()
+
+ krel = platform.release()
+ if topotest.version_cmp(krel, "4.10") < 0:
+ tgen.errors = "Newer kernel than 4.9 needed for pbr tests"
+ pytest.skip(tgen.errors)
+
+ router_list = tgen.routers()
+ for rname, router in router_list.items():
+ # Install vrf into the kernel and slave eth3
+ router.run("ip link add vrf-chiyoda type vrf table 1000")
+ router.run("ip link set dev {}-eth3 master vrf-chiyoda".format(rname))
+ router.run("ip link set vrf-chiyoda up")
+
+ router.load_config(
+ TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
+ )
+ router.load_config(
+ TopoRouter.RD_PBRD, os.path.join(CWD, "{}/pbrd.conf".format(rname))
+ )
+
+ tgen.start_router()
+
+
+def teardown_module(_mod):
+ "Teardown the pytest environment"
+ tgen = get_topogen()
+
+ # This function tears down the whole topology.
+ tgen.stop_topology()
+
+
+def test_converge_protocols():
+ "Wait for protocol convergence"
+
+ tgen = get_topogen()
+ # Don't run this test if we have any failure.
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ topotest.sleep(5, "Waiting for PBR convergence")
+
+
+def test_pbr_data():
+ "Test PBR 'show ip eigrp'"
+
+ tgen = get_topogen()
+ # Don't run this test if we have any failure.
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ # Verify PBR Status
+ logger.info("Verifying PBR routes")
+
+ router_list = tgen.routers().values()
+ for router in router_list:
+ intf_file = "{}/{}/pbr-interface.json".format(CWD, router.name)
+ logger.info(intf_file)
+
+ # Read expected result from file
+ expected = json.loads(open(intf_file).read())
+
+ # Actual output from router
+ test_func = partial(
+ topotest.router_json_cmp, router, "show pbr interface json", expected
+ )
+ _, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
+ assertmsg = '"show pbr interface" mismatches on {}'.format(router.name)
+ if result is not None:
+ gather_pbr_data_on_error(router)
+ assert result is None, assertmsg
+
+ map_file = "{}/{}/pbr-map.json".format(CWD, router.name)
+ logger.info(map_file)
+
+ # Read expected result from file
+ expected = json.loads(open(map_file).read())
+
+ # Actual output from router
+ test_func = partial(
+ topotest.router_json_cmp, router, "show pbr map json", expected
+ )
+ _, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
+ assertmsg = '"show pbr map" mismatches on {}'.format(router.name)
+ if result is not None:
+ gather_pbr_data_on_error(router)
+ assert result is None, assertmsg
+
+ nexthop_file = "{}/{}/pbr-nexthop-groups.json".format(CWD, router.name)
+ logger.info(nexthop_file)
+
+ # Read expected result from file
+ expected = json.loads(open(nexthop_file).read())
+
+ # Actual output from router
+ test_func = partial(
+ topotest.router_json_cmp, router, "show pbr nexthop-groups json", expected
+ )
+ _, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
+ assertmsg = '"show pbr nexthop-groups" mismatches on {}'.format(router.name)
+ if result is not None:
+ gather_pbr_data_on_error(router)
+ assert result is None, assertmsg
+
+
+def test_pbr_flap():
+ "Test PBR interface flapping"
+
+ tgen = get_topogen()
+ # Don't run this test if we have any failure.
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ # Verify PBR Status
+ logger.info("Flapping PBR Interfaces")
+
+ router_list = tgen.routers().values()
+ for router in router_list:
+ # Flap interface to see if route-map properties are intact
+ # Shutdown interface
+
+ for i in range(5):
+ intf = "r1-eth{}".format(i)
+
+ # Down and back again
+ shutdown_bringup_interface(tgen, router.name, intf, False)
+ shutdown_bringup_interface(tgen, router.name, intf, True)
+
+ intf_file = "{}/{}/pbr-interface.json".format(CWD, router.name)
+ logger.info(intf_file)
+
+ # Read expected result from file
+ expected = json.loads(open(intf_file).read())
+
+ # Actual output from router
+ test_func = partial(
+ topotest.router_json_cmp, router, "show pbr interface json", expected
+ )
+ _, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
+ assertmsg = '"show pbr interface" mismatches on {}'.format(router.name)
+ if result is not None:
+ gather_pbr_data_on_error(router)
+ assert result is None, assertmsg
+
+
+def test_rule_linux_installation():
+ "Ensure that rule is installed in the kernel"
+
+ tgen = get_topogen()
+ # Don't run this test if we have any failure.
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ logger.info("Checking for installed PBR rules in OS")
+
+ def _get_router_rules(router, expected):
+ actual = topotest.ip_rules(router)
+
+ logger.info(actual)
+ return topotest.json_cmp(actual, expected)
+
+ router_list = tgen.routers().values()
+ for router in router_list:
+ rules_file = "{}/{}/linux-rules.json".format(CWD, router.name)
+
+ expected = json.loads(open(rules_file).read())
+
+ test_func = partial(_get_router_rules, router, expected)
+
+ _, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
+ assertmsg = "Router {} OS rules mismatch".format(router.name)
+ assert result is None, assertmsg
+
+
+if __name__ == "__main__":
+ args = ["-s"] + sys.argv[1:]
+ sys.exit(pytest.main(args))
+
+#
+# EXTRA SAUCE
+#
+def gather_pbr_data_on_error(router):
+ logger.info(router.vtysh_cmd("show ip route"))
+ logger.info(router.vtysh_cmd("show ip route vrf vrf-chiyoda"))
+ logger.info(router.vtysh_cmd("show ip nht"))
+ logger.info(router.vtysh_cmd("show pbr interface"))
+ logger.info(router.vtysh_cmd("show pbr map"))
+ logger.info(router.vtysh_cmd("show pbr nexthop-groups"))
+ logger.info(router.vtysh_cmd("show nexthop-group rib singleton ip"))
+ logger.info(router.vtysh_cmd("show nexthop-group rib singleton ipv6"))
+ logger.info(router.vtysh_cmd("show nexthop-group rib"))
+ logger.info(router.run("ip nexthop show"))
+ logger.info(router.run("ip route show"))
+ logger.info(router.run("ip route show table 1000"))
+ logger.info(router.run("ip route show table 10000"))
+ logger.info(router.run("ip -6 route show table 10000"))
+ logger.info(router.run("ip route show table 10001"))
+ logger.info(router.run("ip -6 route show table 10001"))
+ logger.info(router.run("ip route show table 10002"))
+ logger.info(router.run("ip -6 route show table 10002"))
+ logger.info(router.run("ip route show table 10003"))
+ logger.info(router.run("ip -6 route show table 10003"))
+ logger.info(router.run("ip route show table 10004"))
+ logger.info(router.run("ip -6 route show table 10004"))
+ logger.info(router.run("ip route show table 10005"))
+ logger.info(router.run("ip -6 route show table 10005"))
+ logger.info(router.run("ip rule show"))