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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
# Copyright (c) 2023 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#
"""
Test if OSPFv3 loopback interfaces get a cost of 0.
https://www.rfc-editor.org/rfc/rfc5340.html#page-37:
If the interface type is point-to-multipoint or the interface is
in the state Loopback, the global scope IPv6 addresses associated
with the interface (if any) are copied into the intra-area-prefix-LSA
with the PrefixOptions LA-bit set, the PrefixLength set to 128, and
the metric set to 0.
"""
import os
import sys
import json
import pytest
import functools
pytestmark = pytest.mark.ospf6d
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, TopoRouter, get_topogen
def setup_module(mod):
topodef = {"s1": ("r1", "r2")}
tgen = Topogen(topodef, 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_ospf6_loopback_cost():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r1 = tgen.gears["r1"]
def _show_ipv6_route():
output = json.loads(r1.vtysh_cmd("show ipv6 route json"))
expected = {
"2001:db8::1/128": [
{
"metric": 0,
"distance": 110,
}
],
"2001:db8::2/128": [
{
"metric": 10,
"distance": 110,
}
],
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(
_show_ipv6_route,
)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assert result is None, "Loopback cost isn't 0"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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