diff options
Diffstat (limited to 'tests/topotests/msdp_topo1/test_msdp_topo1.py')
| -rwxr-xr-x | tests/topotests/msdp_topo1/test_msdp_topo1.py | 442 |
1 files changed, 442 insertions, 0 deletions
diff --git a/tests/topotests/msdp_topo1/test_msdp_topo1.py b/tests/topotests/msdp_topo1/test_msdp_topo1.py new file mode 100755 index 0000000..1af58b0 --- /dev/null +++ b/tests/topotests/msdp_topo1/test_msdp_topo1.py @@ -0,0 +1,442 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC + +# +# test_msdp_topo1.py +# Part of NetDEF Topology Tests +# +# Copyright (c) 2021 by +# Network Device Education Foundation, Inc. ("NetDEF") +# + +""" +test_msdp_topo1.py: Test the FRR PIM MSDP peer. +""" + +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 + +# Required to instantiate the topology builder class. +from lib.topogen import Topogen, TopoRouter, get_topogen +from lib.topolog import logger + +from lib.pim import McastTesterHelper + +pytestmark = [pytest.mark.bgpd, pytest.mark.pimd] + +app_helper = McastTesterHelper() + + +def build_topo(tgen): + "Build function" + + # 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["r1"]) + switch.add_link(tgen.gears["r3"]) + + switch = tgen.add_switch("s3") + switch.add_link(tgen.gears["r2"]) + switch.add_link(tgen.gears["r4"]) + + switch = tgen.add_switch("s4") + # switch.add_link(tgen.gears["r3"]) + switch.add_link(tgen.gears["r4"]) + + switch = tgen.add_switch("s5") + switch.add_link(tgen.gears["r4"]) + + # Create a host connected and direct at r4: + tgen.add_host("h1", "192.168.4.100/24", "via 192.168.4.1") + switch.add_link(tgen.gears["h1"]) + + # Create a host connected and direct at r1: + switch = tgen.add_switch("s6") + tgen.add_host("h2", "192.168.10.100/24", "via 192.168.10.1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["h2"]) + + +def setup_module(mod): + "Sets up the pytest environment" + tgen = Topogen(build_topo, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + for rname, router in router_list.items(): + + daemon_file = "{}/{}/zebra.conf".format(CWD, rname) + if os.path.isfile(daemon_file): + router.load_config(TopoRouter.RD_ZEBRA, daemon_file) + + daemon_file = "{}/{}/bgpd.conf".format(CWD, rname) + if os.path.isfile(daemon_file): + router.load_config(TopoRouter.RD_BGP, daemon_file) + + daemon_file = "{}/{}/pimd.conf".format(CWD, rname) + if os.path.isfile(daemon_file): + router.load_config(TopoRouter.RD_PIM, daemon_file) + + # Initialize all routers. + tgen.start_router() + + app_helper.init(tgen) + + +def teardown_module(mod): + "Teardown the pytest environment" + tgen = get_topogen() + app_helper.cleanup() + tgen.stop_topology() + + +def test_bgp_convergence(): + "Wait for BGP protocol convergence" + tgen = get_topogen() + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + logger.info("waiting for protocols to converge") + + def expect_loopback_route(router, iptype, route, proto): + "Wait until route is present on RIB for protocol." + logger.info("waiting route {} in {}".format(route, router)) + test_func = partial( + topotest.router_json_cmp, + tgen.gears[router], + "show {} route json".format(iptype), + {route: [{"protocol": proto}]}, + ) + _, result = topotest.run_and_expect(test_func, None, count=130, wait=1) + assertmsg = '"{}" convergence failure'.format(router) + assert result is None, assertmsg + + # Wait for R1 + expect_loopback_route("r1", "ip", "10.254.254.2/32", "bgp") + expect_loopback_route("r1", "ip", "10.254.254.3/32", "bgp") + expect_loopback_route("r1", "ip", "10.254.254.4/32", "bgp") + + # Wait for R2 + expect_loopback_route("r2", "ip", "10.254.254.1/32", "bgp") + expect_loopback_route("r2", "ip", "10.254.254.3/32", "bgp") + expect_loopback_route("r2", "ip", "10.254.254.4/32", "bgp") + + # Wait for R3 + expect_loopback_route("r3", "ip", "10.254.254.1/32", "bgp") + expect_loopback_route("r3", "ip", "10.254.254.2/32", "bgp") + expect_loopback_route("r3", "ip", "10.254.254.4/32", "bgp") + + # Wait for R4 + expect_loopback_route("r4", "ip", "10.254.254.1/32", "bgp") + expect_loopback_route("r4", "ip", "10.254.254.2/32", "bgp") + expect_loopback_route("r4", "ip", "10.254.254.3/32", "bgp") + + +def _test_mroute_install(): + "Test that multicast routes propagated and installed" + tgen = get_topogen() + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # + # Test R1 mroute + # + expect_1 = { + "229.1.2.3": { + "192.168.10.100": { + "iif": "r1-eth2", + "flags": "SFT", + "oil": { + "r1-eth0": {"source": "192.168.10.100", "group": "229.1.2.3"}, + "r1-eth1": None, + }, + } + } + } + # Create a deep copy of `expect_1`. + expect_2 = json.loads(json.dumps(expect_1)) + # The route will be either via R2 or R3. + expect_2["229.1.2.3"]["192.168.10.100"]["oil"]["r1-eth0"] = None + expect_2["229.1.2.3"]["192.168.10.100"]["oil"]["r1-eth1"] = { + "source": "192.168.10.100", + "group": "229.1.2.3", + } + + def test_r1_mroute(): + "Test r1 multicast routing table function" + out = tgen.gears["r1"].vtysh_cmd("show ip mroute json", isjson=True) + if topotest.json_cmp(out, expect_1) is None: + return None + return topotest.json_cmp(out, expect_2) + + logger.info("Waiting for R1 multicast routes") + _, val = topotest.run_and_expect(test_r1_mroute, None, count=55, wait=2) + assert val is None, "multicast route convergence failure" + + # + # Test routers 2 and 3. + # + # NOTE: only one of the paths will get the multicast route. + # + expect_r2 = { + "229.1.2.3": { + "192.168.10.100": { + "iif": "r2-eth0", + "flags": "S", + "oil": { + "r2-eth1": { + "source": "192.168.10.100", + "group": "229.1.2.3", + } + }, + } + } + } + expect_r3 = { + "229.1.2.3": { + "192.168.10.100": { + "iif": "r3-eth0", + "flags": "S", + "oil": { + "r3-eth1": { + "source": "192.168.10.100", + "group": "229.1.2.3", + } + }, + } + } + } + + def test_r2_r3_mroute(): + "Test r2/r3 multicast routing table function" + r2_out = tgen.gears["r2"].vtysh_cmd("show ip mroute json", isjson=True) + r3_out = tgen.gears["r3"].vtysh_cmd("show ip mroute json", isjson=True) + + if topotest.json_cmp(r2_out, expect_r2) is not None: + return topotest.json_cmp(r3_out, expect_r3) + + return topotest.json_cmp(r2_out, expect_r2) + + logger.info("Waiting for R2 and R3 multicast routes") + _, val = topotest.run_and_expect(test_r2_r3_mroute, None, count=55, wait=2) + assert val is None, "multicast route convergence failure" + + # + # Test router 4 + # + expect_4 = { + "229.1.2.3": { + "*": { + "iif": "lo", + "flags": "SC", + "oil": { + "pimreg": { + "source": "*", + "group": "229.1.2.3", + "inboundInterface": "lo", + "outboundInterface": "pimreg", + }, + "r4-eth2": { + "source": "*", + "group": "229.1.2.3", + "inboundInterface": "lo", + "outboundInterface": "r4-eth2", + }, + }, + }, + "192.168.10.100": { + "iif": "r4-eth0", + "flags": "ST", + "oil": { + "r4-eth2": { + "source": "192.168.10.100", + "group": "229.1.2.3", + "inboundInterface": "r4-eth0", + "outboundInterface": "r4-eth2", + } + }, + }, + } + } + + test_func = partial( + topotest.router_json_cmp, + tgen.gears["r4"], + "show ip mroute json", + expect_4, + ) + logger.info("Waiting for R4 multicast routes") + _, val = topotest.run_and_expect(test_func, None, count=55, wait=2) + assert val is None, "multicast route convergence failure" + + +def test_mroute_install(): + tgen = get_topogen() + # pytest.skip("FOO") + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + logger.info("Starting helper1") + mcastaddr = "229.1.2.3" + app_helper.run("h1", [mcastaddr, "h1-eth0"]) + + logger.info("Starting helper2") + app_helper.run("h2", ["--send=0.7", mcastaddr, "h2-eth0"]) + + _test_mroute_install() + + +def test_msdp(): + """ + Test MSDP convergence. + + MSDP non meshed groups must propagate the whole SA database (not just + their own) to all peers because not all peers talk with each other. + + This setup leads to a potential loop that can be prevented by checking + the route's first AS in AS path: it must match the remote eBGP AS number. + """ + tgen = get_topogen() + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + r1_expect = { + "192.168.0.2": { + "peer": "192.168.0.2", + "local": "192.168.0.1", + "state": "established", + }, + "192.168.1.2": { + "peer": "192.168.1.2", + "local": "192.168.1.1", + "state": "established", + }, + } + r1_sa_expect = { + "229.1.2.3": { + "192.168.10.100": { + "source": "192.168.10.100", + "group": "229.1.2.3", + "rp": "-", + "local": "yes", + "sptSetup": "-", + } + } + } + r2_expect = { + "192.168.0.1": { + "peer": "192.168.0.1", + "local": "192.168.0.2", + "state": "established", + }, + "192.168.2.2": { + "peer": "192.168.2.2", + "local": "192.168.2.1", + "state": "established", + }, + } + # Only R2 or R3 will get this SA. + r2_r3_sa_expect = { + "229.1.2.3": { + "192.168.10.100": { + "source": "192.168.10.100", + "group": "229.1.2.3", + "rp": "192.168.1.1", + "local": "no", + "sptSetup": "no", + } + } + } + r3_expect = { + "192.168.1.1": { + "peer": "192.168.1.1", + "local": "192.168.1.2", + "state": "established", + }, + # "192.169.3.2": { + # "peer": "192.168.3.2", + # "local": "192.168.3.1", + # "state": "established" + # } + } + r4_expect = { + "192.168.2.1": { + "peer": "192.168.2.1", + "local": "192.168.2.2", + "state": "established", + }, + # "192.168.3.1": { + # "peer": "192.168.3.1", + # "local": "192.168.3.2", + # "state": "established" + # } + } + r4_sa_expect = { + "229.1.2.3": { + "192.168.10.100": { + "source": "192.168.10.100", + "group": "229.1.2.3", + "rp": "192.168.1.1", + "local": "no", + "sptSetup": "yes", + } + } + } + + for router in [ + ("r1", r1_expect, r1_sa_expect), + ("r2", r2_expect, r2_r3_sa_expect), + ("r3", r3_expect, r2_r3_sa_expect), + ("r4", r4_expect, r4_sa_expect), + ]: + test_func = partial( + topotest.router_json_cmp, + tgen.gears[router[0]], + "show ip msdp peer json", + router[1], + ) + logger.info("Waiting for {} msdp peer data".format(router[0])) + _, val = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert val is None, "multicast route convergence failure" + + test_func = partial( + topotest.router_json_cmp, + tgen.gears[router[0]], + "show ip msdp sa json", + router[2], + ) + logger.info("Waiting for {} msdp SA data".format(router[0])) + _, val = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert val is None, "multicast route convergence failure" + + +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)) |