From 6923dd88ccbebbe560dba8617172677b740ee8c5 Mon Sep 17 00:00:00 2001 From: Rafael Zalamena Date: Mon, 30 Dec 2024 16:55:49 -0300 Subject: [PATCH] topotests: test direct-table on different VRFs Test new zebra feature that allows table-direct to work on any VRF with BGP. Signed-off-by: Rafael Zalamena --- .../bgp_table_direct_topo1/__init__.py | 0 .../bgp_table_direct_topo1/r1/frr.conf | 31 +++ .../bgp_table_direct_topo1/r2/frr.conf | 10 + .../bgp_table_direct_topo1/r3/frr.conf | 10 + .../test_bgp_table_direct_topo1.py | 201 ++++++++++++++++++ 5 files changed, 252 insertions(+) create mode 100644 tests/topotests/bgp_table_direct_topo1/__init__.py create mode 100644 tests/topotests/bgp_table_direct_topo1/r1/frr.conf create mode 100644 tests/topotests/bgp_table_direct_topo1/r2/frr.conf create mode 100644 tests/topotests/bgp_table_direct_topo1/r3/frr.conf create mode 100644 tests/topotests/bgp_table_direct_topo1/test_bgp_table_direct_topo1.py diff --git a/tests/topotests/bgp_table_direct_topo1/__init__.py b/tests/topotests/bgp_table_direct_topo1/__init__.py new file mode 100644 index 000000000000..e69de29bb2d1 diff --git a/tests/topotests/bgp_table_direct_topo1/r1/frr.conf b/tests/topotests/bgp_table_direct_topo1/r1/frr.conf new file mode 100644 index 000000000000..c45e3456a4ba --- /dev/null +++ b/tests/topotests/bgp_table_direct_topo1/r1/frr.conf @@ -0,0 +1,31 @@ +log commands +! +debug bgp zebra +debug zebra events +! +ip route 10.254.254.1/32 lo table 2000 +ip route 10.254.254.2/32 lo table 2000 +ip route 10.254.254.3/32 lo table 2000 +! +interface r1-eth0 + ip address 192.168.10.1/24 +! +interface r1-eth1 vrf blue + ip address 192.168.20.1/24 +! +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 192.168.10.2 remote-as external + address-family ipv4 unicast + redistribute table-direct 2000 + exit-address-family +! +router bgp 65001 vrf blue + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 192.168.20.2 remote-as external + address-family ipv4 unicast + redistribute table-direct 2000 + exit-address-family +! \ No newline at end of file diff --git a/tests/topotests/bgp_table_direct_topo1/r2/frr.conf b/tests/topotests/bgp_table_direct_topo1/r2/frr.conf new file mode 100644 index 000000000000..04787be0b34f --- /dev/null +++ b/tests/topotests/bgp_table_direct_topo1/r2/frr.conf @@ -0,0 +1,10 @@ +log commands +! +interface r2-eth0 + ip address 192.168.10.2/24 +! +router bgp 65002 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 192.168.10.1 remote-as external +! \ No newline at end of file diff --git a/tests/topotests/bgp_table_direct_topo1/r3/frr.conf b/tests/topotests/bgp_table_direct_topo1/r3/frr.conf new file mode 100644 index 000000000000..2530b28bfd60 --- /dev/null +++ b/tests/topotests/bgp_table_direct_topo1/r3/frr.conf @@ -0,0 +1,10 @@ +log commands +! +interface r3-eth0 + ip address 192.168.20.2/24 +! +router bgp 65003 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 192.168.20.1 remote-as external +! \ No newline at end of file diff --git a/tests/topotests/bgp_table_direct_topo1/test_bgp_table_direct_topo1.py b/tests/topotests/bgp_table_direct_topo1/test_bgp_table_direct_topo1.py new file mode 100644 index 000000000000..70257be3e7bf --- /dev/null +++ b/tests/topotests/bgp_table_direct_topo1/test_bgp_table_direct_topo1.py @@ -0,0 +1,201 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC + +# +# test_bgp_table_direct_topo1.py +# Part of NetDEF Topology Tests +# +# Copyright (c) 2025 by +# Network Device Education Foundation, Inc. ("NetDEF") +# + +""" +test_bgp_table_direct_topo1.py: Test the FRR PIM MSDP peer. +""" + +import os +import sys +import json +from functools import partial +import re +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): + """ + +----+ +----+ + | r1 | <-> | r2 | + +----+ +----+ + | + | +----+ + --------| r3 | + +----+ + """ + + # Create 3 routers + for routern in range(1, 4): + tgen.add_router(f"r{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"]) + + +def setup_module(mod): + "Sets up the pytest environment" + tgen = Topogen(build_topo, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + for _, router in router_list.items(): + router.load_frr_config(os.path.join(CWD, f"{router.name}/frr.conf")) + + tgen.gears["r1"].run("ip link add blue type vrf table 10") + tgen.gears["r1"].run("ip link set blue up") + tgen.gears["r1"].run("ip link set r1-eth1 master blue") + + # Initialize all routers. + tgen.start_router() + + app_helper.init(tgen) + + +def teardown_module(): + "Teardown the pytest environment" + tgen = get_topogen() + app_helper.cleanup() + tgen.stop_topology() + + +def expect_bgp_route(router, iptype, route, missing=False): + "Wait until route is present on RIB for protocol." + if missing: + logger.info("waiting route {} go missing in {}".format(route, router)) + else: + logger.info("waiting route {} in {}".format(route, router)) + + tgen = get_topogen() + expected_output = {route: [{"protocol": "bgp"}]} + wait_time = 130 + if missing: + expected_output = {route: None} + wait_time = 5 + + test_func = partial( + topotest.router_json_cmp, + tgen.gears[router], + "show {} route json".format(iptype), + expected_output + ) + + _, result = topotest.run_and_expect(test_func, None, count=130, wait=1) + assertmsg = f'"{router}" convergence failure' + assert result is None, assertmsg + + +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") + + # Wait for R2 + expect_bgp_route("r2", "ip", "10.254.254.1/32") + expect_bgp_route("r2", "ip", "10.254.254.2/32") + expect_bgp_route("r2", "ip", "10.254.254.3/32") + + # Wait for R3 + expect_bgp_route("r3", "ip", "10.254.254.1/32") + expect_bgp_route("r3", "ip", "10.254.254.2/32") + expect_bgp_route("r3", "ip", "10.254.254.3/32") + + +def test_route_change_convergence(): + "Change routes in table 2000 to test zebra redistribution." + tgen = get_topogen() + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + tgen.gears["r1"].vtysh_cmd(""" + configure terminal + no ip route 10.254.254.2/32 lo table 2000 + ip route 10.254.254.10/32 lo table 2000 + """) + + # Check R2 + expect_bgp_route("r2", "ip", "10.254.254.2/32", missing=True) + expect_bgp_route("r2", "ip", "10.254.254.10/32") + + # Check R3 + expect_bgp_route("r3", "ip", "10.254.254.2/32", missing=True) + expect_bgp_route("r3", "ip", "10.254.254.10/32") + + +def test_configuration_removal_convergence(): + "Remove table direct configuration and check if routes went missing." + tgen = get_topogen() + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + tgen.gears["r1"].vtysh_cmd(""" + configure terminal + router bgp 65001 + address-family ipv4 unicast + no redistribute table-direct 2000 + exit-address-family + exit + + router bgp 65001 vrf blue + address-family ipv4 unicast + no redistribute table-direct 2000 + exit-address-family + exit + """) + + # Check R2 + expect_bgp_route("r2", "ip", "10.254.254.1/32", missing=True) + expect_bgp_route("r2", "ip", "10.254.254.3/32", missing=True) + expect_bgp_route("r2", "ip", "10.254.254.10/32", missing=True) + + # Check R3 + expect_bgp_route("r3", "ip", "10.254.254.1/32", missing=True) + expect_bgp_route("r3", "ip", "10.254.254.3/32", missing=True) + expect_bgp_route("r3", "ip", "10.254.254.10/32", missing=True) + + +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))