From 8878e385d82bb8cc8b67e29f7bec53e308ed1ae6 Mon Sep 17 00:00:00 2001 From: Donatas Abraitis Date: Wed, 8 Jan 2025 22:38:00 +0200 Subject: [PATCH] tests: Check if Link-Local Next Hop capability works Signed-off-by: Donatas Abraitis --- .../__init__.py | 0 .../r1/frr.conf | 15 +++ .../r2/frr.conf | 13 +++ .../test_bgp_ipv6_link_local_capability.py | 110 ++++++++++++++++++ 4 files changed, 138 insertions(+) create mode 100644 tests/topotests/bgp_ipv6_link_local_capability/__init__.py create mode 100644 tests/topotests/bgp_ipv6_link_local_capability/r1/frr.conf create mode 100644 tests/topotests/bgp_ipv6_link_local_capability/r2/frr.conf create mode 100644 tests/topotests/bgp_ipv6_link_local_capability/test_bgp_ipv6_link_local_capability.py diff --git a/tests/topotests/bgp_ipv6_link_local_capability/__init__.py b/tests/topotests/bgp_ipv6_link_local_capability/__init__.py new file mode 100644 index 0000000000..e69de29bb2 diff --git a/tests/topotests/bgp_ipv6_link_local_capability/r1/frr.conf b/tests/topotests/bgp_ipv6_link_local_capability/r1/frr.conf new file mode 100644 index 0000000000..1cf7f3b913 --- /dev/null +++ b/tests/topotests/bgp_ipv6_link_local_capability/r1/frr.conf @@ -0,0 +1,15 @@ +! +int lo + ip address 10.0.0.1/32 +! +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + bgp default link-local-capability + neighbor r1-eth0 interface remote-as auto + address-family ipv6 unicast + network 2001:db8::1/128 + neighbor r1-eth0 activate + exit-address-family + ! +! diff --git a/tests/topotests/bgp_ipv6_link_local_capability/r2/frr.conf b/tests/topotests/bgp_ipv6_link_local_capability/r2/frr.conf new file mode 100644 index 0000000000..4af053dcf6 --- /dev/null +++ b/tests/topotests/bgp_ipv6_link_local_capability/r2/frr.conf @@ -0,0 +1,13 @@ +! +int lo + ip address 10.0.0.2/32 +! +router bgp 65002 + no bgp ebgp-requires-policy + bgp default link-local-capability + neighbor r2-eth0 interface remote-as auto + address-family ipv6 unicast + neighbor r2-eth0 activate + exit-address-family + ! +! diff --git a/tests/topotests/bgp_ipv6_link_local_capability/test_bgp_ipv6_link_local_capability.py b/tests/topotests/bgp_ipv6_link_local_capability/test_bgp_ipv6_link_local_capability.py new file mode 100644 index 0000000000..1822f17ee4 --- /dev/null +++ b/tests/topotests/bgp_ipv6_link_local_capability/test_bgp_ipv6_link_local_capability.py @@ -0,0 +1,110 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC +# +# Copyright (c) 2024 by +# Donatas Abraitis +# + +import os +import sys +import json +import pytest +import functools + +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(CWD, "../")) + +# pylint: disable=C0413 +from lib import topotest +from lib.topogen import Topogen, get_topogen +from lib.common_config import step + +pytestmark = [pytest.mark.bgpd] + + +def build_topo(tgen): + tgen.add_router("r1") + tgen.add_router("r2") + + switch = tgen.add_switch("s1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r2"]) + + +def setup_module(mod): + tgen = Topogen(build_topo, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + + for _, (rname, router) in enumerate(router_list.items(), 1): + router.load_frr_config(os.path.join(CWD, "{}/frr.conf".format(rname))) + + tgen.start_router() + + +def teardown_module(mod): + tgen = get_topogen() + tgen.stop_topology() + + +def test_bgp_ipv6_link_local_capability(): + tgen = get_topogen() + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + r2 = tgen.gears["r2"] + + def _bgp_converge(): + output = json.loads(r2.vtysh_cmd("show bgp neighbor json")) + expected = { + "r2-eth0": { + "neighborCapabilities": { + "linkLocalNextHop": { + "advertised": True, + "received": True, + } + } + } + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial(_bgp_converge) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Can't converge initially" + + def _bgp_check_received_nexthops(): + output = json.loads(r2.vtysh_cmd("show bgp 2001:db8::1/128 json")) + expected = { + "paths": [ + { + "valid": True, + "nexthops": [ + { + "hostname": "r1", + "afi": "ipv6", + "scope": "global", + "length": 16, + "accessible": True, + } + ], + "peer": { + "routerId": "10.0.0.1", + "hostname": "r1", + "interface": "r2-eth0", + "type": "external", + }, + } + ] + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial(_bgp_check_received_nexthops) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Can't see 2001:db8::1/128" + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args))