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tests: Test ospf unnumbered behavior and ensure that it works

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Recent commit: 0eb97b860d

Broke onlink behavior and as a result ospf unnumbered failed
to work.  This commit adds a small test to create 2 ospf routers,
connect them through ospf unlinked behavior and then ensure
that the routes are installed into the kernel as expected.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2020-01-20 14:49:03 -05:00
parent 54bea4e537
commit 3d7660fa85
9 changed files with 411 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tests/topotests/ospf-topo2/r1/ospf-route.json Normal file
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@ -0,0 +1 @@
{ "10.0.1.1\/32": { "routeType": "N", "cost": 10, "area": "0.0.0.0", "nexthops": [ { "ip": " ", "directly attached to": "r1-eth0" } ] }, "10.0.20.1\/32": { "routeType": "N", "cost": 20, "area": "0.0.0.0", "nexthops": [ { "ip": "10.0.3.2", "via": "r1-eth1" } ] }, "10.0.255.2": { "routeType": "R ", "cost": 10, "area": "0.0.0.0", "routerType": "asbr", "nexthops": [ { "ip": "10.0.3.2", "via": "r1-eth1" } ] } }

11
tests/topotests/ospf-topo2/r1/ospfd.conf Normal file
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@ -0,0 +1,11 @@
!
interface r1-eth1
ip ospf network point-to-point
!
router ospf
ospf router-id 10.0.255.1
redistribute kernel
redistribute connected
redistribute static
network 0.0.0.0/0 area 0
!

104
tests/topotests/ospf-topo2/r1/v4_route.json Normal file
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{
"10.0.1.1\/32":[
{
"prefix":"10.0.1.1\/32",
"protocol":"ospf",
"distance":110,
"metric":10,
"table":254,
"internalStatus":0,
"internalFlags":0,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":9,
"ip":"0.0.0.0",
"afi":"ipv4",
"interfaceIndex":2,
"interfaceName":"r1-eth0",
"active":true,
"onLink":true
}
]
},
{
"prefix":"10.0.1.1\/32",
"protocol":"connected",
"selected":true,
"destSelected":true,
"distance":0,
"metric":0,
"installed":true,
"table":254,
"internalStatus":16,
"internalFlags":8,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":3,
"fib":true,
"directlyConnected":true,
"interfaceIndex":2,
"interfaceName":"r1-eth0",
"active":true
}
]
}
],
"10.0.3.4\/32":[
{
"prefix":"10.0.3.4\/32",
"protocol":"connected",
"selected":true,
"destSelected":true,
"distance":0,
"metric":0,
"installed":true,
"table":254,
"internalStatus":16,
"internalFlags":8,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":3,
"fib":true,
"directlyConnected":true,
"interfaceIndex":3,
"interfaceName":"r1-eth1",
"active":true
}
]
}
],
"10.0.20.1\/32":[
{
"prefix":"10.0.20.1\/32",
"protocol":"ospf",
"selected":true,
"destSelected":true,
"distance":110,
"metric":20,
"installed":true,
"table":254,
"internalStatus":16,
"internalFlags":8,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":11,
"fib":true,
"ip":"10.0.3.2",
"afi":"ipv4",
"interfaceIndex":3,
"interfaceName":"r1-eth1",
"active":true,
"onLink":true
}
]
}
]
}

7
tests/topotests/ospf-topo2/r1/zebra.conf Normal file
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@ -0,0 +1,7 @@
!
interface r1-eth0
ip address 10.0.1.1/32
!
interface r1-eth1
ip address 10.0.3.4/32
!

1
tests/topotests/ospf-topo2/r2/ospf-route.json Normal file
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@ -0,0 +1 @@
{ "10.0.1.1\/32": { "routeType": "N", "cost": 20, "area": "0.0.0.0", "nexthops": [ { "ip": "10.0.3.4", "via": "r2-eth1" } ] }, "10.0.20.1\/32": { "routeType": "N", "cost": 10, "area": "0.0.0.0", "nexthops": [ { "ip": " ", "directly attached to": "r2-eth0" } ] }, "10.0.255.1": { "routeType": "R ", "cost": 10, "area": "0.0.0.0", "routerType": "asbr", "nexthops": [ { "ip": "10.0.3.4", "via": "r2-eth1" } ] } }

11
tests/topotests/ospf-topo2/r2/ospfd.conf Normal file
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@ -0,0 +1,11 @@
!
interface r2-eth1
ip ospf network point-to-point
!
router ospf
ospf router-id 10.0.255.2
redistribute kernel
redistribute connected
redistribute static
network 0.0.0.0/0 area 0
!

104
tests/topotests/ospf-topo2/r2/v4_route.json Normal file
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@ -0,0 +1,104 @@
{
"10.0.1.1\/32":[
{
"prefix":"10.0.1.1\/32",
"protocol":"ospf",
"selected":true,
"destSelected":true,
"distance":110,
"metric":20,
"installed":true,
"table":254,
"internalStatus":16,
"internalFlags":8,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":11,
"fib":true,
"ip":"10.0.3.4",
"afi":"ipv4",
"interfaceIndex":3,
"interfaceName":"r2-eth1",
"active":true,
"onLink":true
}
]
}
],
"10.0.3.2\/32":[
{
"prefix":"10.0.3.2\/32",
"protocol":"connected",
"selected":true,
"destSelected":true,
"distance":0,
"metric":0,
"installed":true,
"table":254,
"internalStatus":16,
"internalFlags":8,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":3,
"fib":true,
"directlyConnected":true,
"interfaceIndex":3,
"interfaceName":"r2-eth1",
"active":true
}
]
}
],
"10.0.20.1\/32":[
{
"prefix":"10.0.20.1\/32",
"protocol":"ospf",
"distance":110,
"metric":10,
"table":254,
"internalStatus":0,
"internalFlags":0,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":9,
"ip":"0.0.0.0",
"afi":"ipv4",
"interfaceIndex":2,
"interfaceName":"r2-eth0",
"active":true,
"onLink":true
}
]
},
{
"prefix":"10.0.20.1\/32",
"protocol":"connected",
"selected":true,
"destSelected":true,
"distance":0,
"metric":0,
"installed":true,
"table":254,
"internalStatus":16,
"internalFlags":8,
"internalNextHopNum":1,
"internalNextHopActiveNum":1,
"nexthops":[
{
"flags":3,
"fib":true,
"directlyConnected":true,
"interfaceIndex":2,
"interfaceName":"r2-eth0",
"active":true
}
]
}
]
}

7
tests/topotests/ospf-topo2/r2/zebra.conf Normal file
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@ -0,0 +1,7 @@
!
interface r2-eth0
ip address 10.0.20.1/32
!
interface r2-eth1
ip address 10.0.3.2/32
!

165
tests/topotests/ospf-topo2/test_ospf_topo2.py Executable file
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@ -0,0 +1,165 @@
#!/usr/bin/env python
#
# test_ospf_topo2.py
#
# Copyright (c) 2019 by
# Cumulus Networks, Inc
# Donald Sharp
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
test_ospf_topo2.py: Test the OSPF unnumbered.
"""
import os
import re
import sys
from functools import partial
import pytest
import json
# 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.
from mininet.topo import Topo
class OSPFTopo(Topo):
"Test topology builder"
def build(self, *_args, **_opts):
"Build function"
tgen = get_topogen(self)
# Create 4 routers
for routern in range(1, 3):
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
switch = tgen.add_switch('s3')
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r2'])
def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(OSPFTopo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.iteritems():
router.load_config(
TopoRouter.RD_ZEBRA,
os.path.join(CWD, '{}/zebra.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_OSPF,
os.path.join(CWD, '{}/ospfd.conf'.format(rname))
)
# What is this? OSPF Unnumbered depends on the rp_filter
# being set appropriately( HA! )
# Effectively we are putting different /32's on the interface
# the multicast packet delivery is somewhat controlled by
# the rp_filter. Setting it to '0' allows the OS to pass
# up the mcast packet not destined for the local routers
# network.
topotest.set_sysctl(tgen.net['r1'],
'net.ipv4.conf.r1-eth1.rp_filter', 0)
topotest.set_sysctl(tgen.net['r1'],
'net.ipv4.conf.all.rp_filter', 0)
topotest.set_sysctl(tgen.net['r2'],
'net.ipv4.conf.r2-eth1.rp_filter', 0)
topotest.set_sysctl(tgen.net['r2'],
'net.ipv4.conf.all.rp_filter', 0)
# Initialize all routers.
tgen.start_router()
#tgen.mininet_cli()
def teardown_module(mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
def test_ospf_convergence():
"Test OSPF daemon convergence and that we have received the ospf routes"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip('skipped because of router(s) failure')
for router, rnode in tgen.routers().iteritems():
logger.info('Waiting for router "%s" convergence', router)
json_file = '{}/{}/ospf-route.json'.format(CWD, router)
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
rnode, 'show ip ospf route json', expected)
_, result = topotest.run_and_expect(test_func, None, count=160, wait=0.5)
assertmsg = '"{}" JSON output mismatches'.format(router)
assert result is None, assertmsg
#tgen.mininet_cli()
def test_ospf_kernel_route():
"Test OSPF kernel route installation and we have the onlink success"
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)
json_file = '{}/{}/v4_route.json'.format(CWD, router.name)
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
router, 'show ip route json', expected)
_, result = topotest.run_and_expect(test_func, None, count=10, wait=.5)
assertmsg = '"{}" JSON output mistmatches'.format(router)
assert result is None, assertmsg
#tgen.mininet_cli()
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))