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Diffstat (limited to 'tests/topotests/pbr_topo1/test_pbr_topo1.py')
-rw-r--r-- | tests/topotests/pbr_topo1/test_pbr_topo1.py | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/tests/topotests/pbr_topo1/test_pbr_topo1.py b/tests/topotests/pbr_topo1/test_pbr_topo1.py new file mode 100644 index 0000000..8506a15 --- /dev/null +++ b/tests/topotests/pbr_topo1/test_pbr_topo1.py @@ -0,0 +1,288 @@ +#!/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")) |