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#!/usr/bin/env python
# -*- coding: utf-8 eval: (blacken-mode 1) -*-
# SPDX-License-Identifier: ISC
#
# Copyright (c) 2024 NFWare Inc.
#
# noqa: E501
#
"""
Test static route functionality
"""
import ipaddress
import pytest
from lib.topogen import Topogen
from lib.common_config import retry
pytestmark = [pytest.mark.staticd, pytest.mark.mgmtd]
@pytest.fixture(scope="module")
def tgen(request):
"Setup/Teardown the environment and provide tgen argument to tests"
topodef = {"s1": ("r1",), "s2": ("r1",)}
tgen = Topogen(topodef, request.module.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.items():
# Setup VRF red
router.net.add_l3vrf("red", 10)
router.net.attach_iface_to_l3vrf(rname + "-eth0", "red")
# Setup VRF blue
router.net.add_l3vrf("blue", 20)
router.net.attach_iface_to_l3vrf(rname + "-eth1", "blue")
# Load configuration
router.load_frr_config("frr.conf")
tgen.start_router()
yield tgen
tgen.stop_topology()
@retry(retry_timeout=1, initial_wait=0.1)
def check_kernel(r1, prefix, nexthops, vrf, expected_p=True, expected_nh=True):
vrfstr = f" vrf {vrf}" if vrf else ""
net = ipaddress.ip_network(prefix)
if net.version == 6:
kernel = r1.run(f"ip -6 route show{vrfstr} {prefix}")
else:
kernel = r1.run(f"ip -4 route show{vrfstr} {prefix}")
if expected_p:
assert prefix in kernel, f"Failed to find \n'{prefix}'\n in \n'{kernel:.1920}'"
else:
assert (
prefix not in kernel
), f"Failed found \n'{prefix}'\n in \n'{kernel:.1920}'"
if not expected_p:
return
for nh in nexthops:
if expected_nh:
assert f"{nh}" in kernel, f"Failed to find \n'{nh}'\n in \n'{kernel:.1920}'"
else:
assert (
f"{nh}" not in kernel
), f"Failed found \n'{nh}'\n in \n'{kernel:.1920}'"
def test_static_vrf(tgen):
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r1 = tgen.gears["r1"]
# Check initial configuration
check_kernel(r1, "198.51.100.1", ["192.0.2.2", "192.0.2.130"], None)
check_kernel(r1, "198.51.100.2", ["r1-eth0", "r1-eth1"], None)
check_kernel(r1, "203.0.113.1", ["192.0.2.130"], "red")
check_kernel(r1, "203.0.113.2", ["r1-eth1"], "red")
check_kernel(r1, "203.0.113.129", ["192.0.2.2"], "blue")
check_kernel(r1, "203.0.113.130", ["r1-eth0"], "blue")
# Delete VRF red
r1.net.del_iface("red")
# Check that "red" nexthops are removed, "blue" nexthops are still there
check_kernel(r1, "198.51.100.1", ["192.0.2.2"], None, expected_nh=False)
check_kernel(r1, "198.51.100.1", ["192.0.2.130"], None)
check_kernel(r1, "198.51.100.2", ["r1-eth0"], None, expected_nh=False)
check_kernel(r1, "198.51.100.2", ["r1-eth1"], None)
check_kernel(r1, "203.0.113.129", ["192.0.2.2"], "blue", expected_p=False)
check_kernel(r1, "203.0.113.130", ["r1-eth0"], "blue", expected_p=False)
# Delete VRF blue
r1.net.del_iface("blue")
# Check that "blue" nexthops are removed
check_kernel(r1, "198.51.100.1", ["192.0.2.130"], None, expected_p=False)
check_kernel(r1, "198.51.100.2", ["r1-eth1"], None, expected_p=False)
# Add VRF red back, attach "eth0" to it
r1.net.add_l3vrf("red", 10)
r1.net.attach_iface_to_l3vrf("r1-eth0", "red")
# Check that "red" nexthops are restored
check_kernel(r1, "198.51.100.1", ["192.0.2.2"], None)
check_kernel(r1, "198.51.100.2", ["r1-eth0"], None)
# Add VRF blue back, attach "eth1" to it
r1.net.add_l3vrf("blue", 20)
r1.net.attach_iface_to_l3vrf("r1-eth1", "blue")
# Check that everything is restored
check_kernel(r1, "198.51.100.1", ["192.0.2.2", "192.0.2.130"], None)
check_kernel(r1, "198.51.100.2", ["r1-eth0", "r1-eth1"], None)
check_kernel(r1, "203.0.113.1", ["192.0.2.130"], "red")
check_kernel(r1, "203.0.113.2", ["r1-eth1"], "red")
check_kernel(r1, "203.0.113.129", ["192.0.2.2"], "blue")
check_kernel(r1, "203.0.113.130", ["r1-eth0"], "blue")
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