313 lines
10 KiB
Python
313 lines
10 KiB
Python
|
#!/usr/bin/env python
|
||
|
|
# SPDX-License-Identifier: ISC
|
||
|
|
|
||
|
|
#
|
||
|
|
# test_ospf_netns_vrf.py
|
||
|
|
# Part of NetDEF Topology Tests
|
||
|
|
#
|
||
|
|
# Copyright (c) 2017 by
|
||
|
|
# Network Device Education Foundation, Inc. ("NetDEF")
|
||
|
|
#
|
||
|
|
|
||
|
|
"""
|
||
|
|
test_ospf_netns_vrf.py: Test OSPF with Network Namespace VRFs.
|
||
|
|
"""
|
||
|
|
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
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
|
||
|
|
from lib.topogen import Topogen, TopoRouter, get_topogen
|
||
|
|
from lib.topolog import logger
|
||
|
|
|
||
|
|
# Required to instantiate the topology builder class.
|
||
|
|
|
||
|
|
pytestmark = [pytest.mark.ospfd]
|
||
|
|
|
||
|
|
|
||
|
|
def build_topo(tgen):
|
||
|
|
"Build function"
|
||
|
|
|
||
|
|
# Create 3 routers
|
||
|
|
for routern in range(1, 4):
|
||
|
|
tgen.add_router("r{}".format(routern))
|
||
|
|
|
||
|
|
# Create a empty network for router 1
|
||
|
|
switch = tgen.add_switch("s1")
|
||
|
|
switch.add_link(tgen.gears["r1"])
|
||
|
|
|
||
|
|
# Create a empty network for router 2
|
||
|
|
switch = tgen.add_switch("s2")
|
||
|
|
switch.add_link(tgen.gears["r2"])
|
||
|
|
|
||
|
|
# Interconect router 1, 2 and 3
|
||
|
|
switch = tgen.add_switch("s3")
|
||
|
|
switch.add_link(tgen.gears["r1"])
|
||
|
|
switch.add_link(tgen.gears["r2"])
|
||
|
|
switch.add_link(tgen.gears["r3"])
|
||
|
|
|
||
|
|
# Create empty netowrk for router3
|
||
|
|
switch = tgen.add_switch("s4")
|
||
|
|
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()
|
||
|
|
|
||
|
|
# check for zebra capability
|
||
|
|
for rname, router in router_list.items():
|
||
|
|
if router.check_capability(TopoRouter.RD_ZEBRA, "--vrfwnetns") == False:
|
||
|
|
return pytest.skip(
|
||
|
|
"Skipping OSPF VRF NETNS feature. VRF NETNS backend not available on FRR"
|
||
|
|
)
|
||
|
|
|
||
|
|
if os.system("ip netns list") != 0:
|
||
|
|
return pytest.skip(
|
||
|
|
"Skipping OSPF VRF NETNS Test. NETNS not available on System"
|
||
|
|
)
|
||
|
|
|
||
|
|
logger.info("Testing with VRF Namespace support")
|
||
|
|
|
||
|
|
for rname, router in router_list.items():
|
||
|
|
# create VRF rx-ospf-cust1 and link rx-eth{0,1} to rx-ospf-cust1
|
||
|
|
ns = "{}-ospf-cust1".format(rname)
|
||
|
|
router.net.add_netns(ns)
|
||
|
|
router.net.set_intf_netns(rname + "-eth0", ns, up=True)
|
||
|
|
router.net.set_intf_netns(rname + "-eth1", ns, up=True)
|
||
|
|
|
||
|
|
router.load_config(TopoRouter.RD_MGMTD, None, "--vrfwnetns")
|
||
|
|
router.load_config(
|
||
|
|
TopoRouter.RD_ZEBRA,
|
||
|
|
os.path.join(CWD, "{}/zebra.conf".format(rname)),
|
||
|
|
"--vrfwnetns",
|
||
|
|
)
|
||
|
|
router.load_config(
|
||
|
|
TopoRouter.RD_OSPF, os.path.join(CWD, "{}/ospfd.conf".format(rname))
|
||
|
|
)
|
||
|
|
|
||
|
|
# Initialize all routers.
|
||
|
|
tgen.start_router()
|
||
|
|
for router in router_list.values():
|
||
|
|
if router.has_version("<", "4.0"):
|
||
|
|
tgen.set_error("unsupported version")
|
||
|
|
|
||
|
|
|
||
|
|
def teardown_module(mod):
|
||
|
|
"Teardown the pytest environment"
|
||
|
|
tgen = get_topogen()
|
||
|
|
|
||
|
|
# Move interfaces out of vrf namespace and delete the namespace
|
||
|
|
router_list = tgen.routers()
|
||
|
|
for rname, router in router_list.items():
|
||
|
|
tgen.net[rname].reset_intf_netns(rname + "-eth0")
|
||
|
|
tgen.net[rname].reset_intf_netns(rname + "-eth1")
|
||
|
|
tgen.net[rname].delete_netns(rname + "-ospf-cust1")
|
||
|
|
tgen.stop_topology()
|
||
|
|
|
||
|
|
|
||
|
|
# Shared test function to validate expected output.
|
||
|
|
def compare_show_ip_route_vrf(rname, expected):
|
||
|
|
"""
|
||
|
|
Calls 'show ip ospf vrf [rname]-ospf-cust1 route' for router `rname` and compare the obtained
|
||
|
|
result with the expected output.
|
||
|
|
"""
|
||
|
|
tgen = get_topogen()
|
||
|
|
vrf_name = "{0}-ospf-cust1".format(rname)
|
||
|
|
current = topotest.ip4_route_zebra(tgen.gears[rname], vrf_name)
|
||
|
|
ret = topotest.difflines(
|
||
|
|
current, expected, title1="Current output", title2="Expected output"
|
||
|
|
)
|
||
|
|
return ret
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_convergence():
|
||
|
|
"Test OSPF daemon convergence"
|
||
|
|
tgen = get_topogen()
|
||
|
|
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
for rname, router in tgen.routers().items():
|
||
|
|
logger.info('Waiting for router "%s" convergence', rname)
|
||
|
|
|
||
|
|
# Load expected results from the command
|
||
|
|
reffile = os.path.join(CWD, "{}/ospfroute.txt".format(rname))
|
||
|
|
expected = open(reffile).read()
|
||
|
|
|
||
|
|
# Run test function until we get an result. Wait at most 60 seconds.
|
||
|
|
test_func = partial(
|
||
|
|
topotest.router_output_cmp,
|
||
|
|
router,
|
||
|
|
"show ip ospf vrf {0}-ospf-cust1 route".format(rname),
|
||
|
|
expected,
|
||
|
|
)
|
||
|
|
result, diff = topotest.run_and_expect(test_func, "", count=160, wait=0.5)
|
||
|
|
assertmsg = "OSPF did not converge on {}:\n{}".format(rname, diff)
|
||
|
|
assert result, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_kernel_route():
|
||
|
|
"Test OSPF kernel route installation"
|
||
|
|
tgen = get_topogen()
|
||
|
|
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
rlist = tgen.routers().values()
|
||
|
|
for router in rlist:
|
||
|
|
logger.info('Checking OSPF IPv4 kernel routes in "%s"', router.name)
|
||
|
|
reffile = os.path.join(CWD, "{}/zebraroute.txt".format(router.name))
|
||
|
|
expected = open(reffile).read()
|
||
|
|
# Run test function until we get an result. Wait at most 60 seconds.
|
||
|
|
test_func = partial(compare_show_ip_route_vrf, router.name, expected)
|
||
|
|
result, diff = topotest.run_and_expect(test_func, "", count=140, wait=0.5)
|
||
|
|
assertmsg = 'OSPF IPv4 route mismatch in router "{}": {}'.format(
|
||
|
|
router.name, diff
|
||
|
|
)
|
||
|
|
assert result, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_json():
|
||
|
|
"Test 'show ip ospf json' output for coherency."
|
||
|
|
tgen = get_topogen()
|
||
|
|
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
for rname, router in tgen.routers().items():
|
||
|
|
logger.info(
|
||
|
|
'Comparing router "%s" "show ip ospf vrf %s-ospf-cust1 json" output',
|
||
|
|
router.name,
|
||
|
|
router.name,
|
||
|
|
)
|
||
|
|
expected = {
|
||
|
|
"{}-ospf-cust1".format(router.name): {
|
||
|
|
"vrfName": "{}-ospf-cust1".format(router.name),
|
||
|
|
"routerId": "10.0.255.{}".format(rname[1:]),
|
||
|
|
"tosRoutesOnly": True,
|
||
|
|
"rfc2328Conform": True,
|
||
|
|
"spfScheduleDelayMsecs": 0,
|
||
|
|
"holdtimeMinMsecs": 50,
|
||
|
|
"holdtimeMaxMsecs": 5000,
|
||
|
|
"lsaMinIntervalMsecs": 5000,
|
||
|
|
"lsaMinArrivalMsecs": 1000,
|
||
|
|
"writeMultiplier": 20,
|
||
|
|
"refreshTimerMsecs": 10000,
|
||
|
|
"asbrRouter": "injectingExternalRoutingInformation",
|
||
|
|
"attachedAreaCounter": 1,
|
||
|
|
"areas": {},
|
||
|
|
}
|
||
|
|
}
|
||
|
|
# Area specific additional checks
|
||
|
|
if router.name == "r1" or router.name == "r2" or router.name == "r3":
|
||
|
|
expected["{}-ospf-cust1".format(router.name)]["areas"]["0.0.0.0"] = {
|
||
|
|
"areaIfActiveCounter": 2,
|
||
|
|
"areaIfTotalCounter": 2,
|
||
|
|
"authentication": "authenticationNone",
|
||
|
|
"backbone": True,
|
||
|
|
"lsaAsbrNumber": 0,
|
||
|
|
"lsaNetworkNumber": 1,
|
||
|
|
"lsaNssaNumber": 0,
|
||
|
|
"lsaNumber": 4,
|
||
|
|
"lsaOpaqueAreaNumber": 0,
|
||
|
|
"lsaOpaqueLinkNumber": 0,
|
||
|
|
"lsaRouterNumber": 3,
|
||
|
|
"lsaSummaryNumber": 0,
|
||
|
|
"nbrFullAdjacentCounter": 2,
|
||
|
|
}
|
||
|
|
|
||
|
|
test_func = partial(
|
||
|
|
topotest.router_json_cmp,
|
||
|
|
router,
|
||
|
|
"show ip ospf vrf {0}-ospf-cust1 json".format(rname),
|
||
|
|
expected,
|
||
|
|
)
|
||
|
|
_, diff = topotest.run_and_expect(test_func, None, count=30, wait=1)
|
||
|
|
assertmsg = '"{}" JSON output mismatches'.format(rname)
|
||
|
|
assert diff is None, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_link_down():
|
||
|
|
"Test OSPF convergence after a link goes down"
|
||
|
|
tgen = get_topogen()
|
||
|
|
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
# Simulate a network down event on router3 switch3 interface.
|
||
|
|
router3 = tgen.gears["r3"]
|
||
|
|
topotest.interface_set_status(
|
||
|
|
router3, "r3-eth0", ifaceaction=False, vrf_name="r3-ospf-cust1"
|
||
|
|
)
|
||
|
|
|
||
|
|
# Expect convergence on all routers
|
||
|
|
for rname, router in tgen.routers().items():
|
||
|
|
logger.info('Waiting for router "%s" convergence after link failure', rname)
|
||
|
|
# Load expected results from the command
|
||
|
|
reffile = os.path.join(CWD, "{}/ospfroute_down.txt".format(rname))
|
||
|
|
expected = open(reffile).read()
|
||
|
|
|
||
|
|
# Run test function until we get an result. Wait at most 60 seconds.
|
||
|
|
test_func = partial(
|
||
|
|
topotest.router_output_cmp,
|
||
|
|
router,
|
||
|
|
"show ip ospf vrf {0}-ospf-cust1 route".format(rname),
|
||
|
|
expected,
|
||
|
|
)
|
||
|
|
result, diff = topotest.run_and_expect(test_func, "", count=140, wait=0.5)
|
||
|
|
assertmsg = "OSPF did not converge on {}:\n{}".format(rname, diff)
|
||
|
|
assert result, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_link_down_kernel_route():
|
||
|
|
"Test OSPF kernel route installation"
|
||
|
|
tgen = get_topogen()
|
||
|
|
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
rlist = tgen.routers().values()
|
||
|
|
for router in rlist:
|
||
|
|
logger.info(
|
||
|
|
'Checking OSPF IPv4 kernel routes in "%s" after link down', router.name
|
||
|
|
)
|
||
|
|
|
||
|
|
str = "{0}-ospf-cust1".format(router.name)
|
||
|
|
reffile = os.path.join(CWD, "{}/zebraroutedown.txt".format(router.name))
|
||
|
|
expected = open(reffile).read()
|
||
|
|
# Run test function until we get an result. Wait at most 60 seconds.
|
||
|
|
test_func = partial(compare_show_ip_route_vrf, router.name, expected)
|
||
|
|
result, diff = topotest.run_and_expect(test_func, "", count=140, wait=0.5)
|
||
|
|
assertmsg = (
|
||
|
|
'OSPF IPv4 route mismatch in router "{}" after link down: {}'.format(
|
||
|
|
router.name, diff
|
||
|
|
)
|
||
|
|
)
|
||
|
|
assert result, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
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))
|