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#!/usr/bin/env python
#
# Part of NetDEF Topology Tests
#
# Copyright (c) 2018, LabN Consulting, L.L.C.
# Authored by Lou Berger <lberger@labn.net>
#
# 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.
#
import os
import re
import sys
import json
import functools
import pytest
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
from lib.common_config import required_linux_kernel_version
pytestmark = [pytest.mark.bgpd]
def build_topo(tgen):
tgen.add_router("r1")
tgen.add_router("r2")
tgen.add_router("ce1")
tgen.add_router("ce2")
tgen.add_router("ce3")
tgen.add_router("ce4")
tgen.add_router("ce5")
tgen.add_router("ce6")
tgen.add_link(tgen.gears["r1"], tgen.gears["r2"], "eth0", "eth0")
tgen.add_link(tgen.gears["ce1"], tgen.gears["r1"], "eth0", "eth1")
tgen.add_link(tgen.gears["ce2"], tgen.gears["r2"], "eth0", "eth1")
tgen.add_link(tgen.gears["ce3"], tgen.gears["r1"], "eth0", "eth2")
tgen.add_link(tgen.gears["ce4"], tgen.gears["r2"], "eth0", "eth2")
tgen.add_link(tgen.gears["ce5"], tgen.gears["r1"], "eth0", "eth3")
tgen.add_link(tgen.gears["ce6"], tgen.gears["r2"], "eth0", "eth3")
def setup_module(mod):
result = required_linux_kernel_version("5.15")
if result is not True:
pytest.skip("Kernel requirements are not met")
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
for rname, router in tgen.routers().items():
router.run("/bin/bash {}/{}/setup.sh".format(CWD, rname))
router.load_config(TopoRouter.RD_ZEBRA,
os.path.join(CWD, '{}/zebra.conf'.format(rname)))
router.load_config(TopoRouter.RD_BGP,
os.path.join(CWD, '{}/bgpd.conf'.format(rname)))
tgen.gears["r1"].run("sysctl net.vrf.strict_mode=1")
tgen.gears["r1"].run("ip link add vrf10 type vrf table 10")
tgen.gears["r1"].run("ip link set vrf10 up")
tgen.gears["r1"].run("ip link add vrf20 type vrf table 20")
tgen.gears["r1"].run("ip link set vrf20 up")
tgen.gears["r1"].run("ip link set eth1 master vrf10")
tgen.gears["r1"].run("ip link set eth2 master vrf10")
tgen.gears["r1"].run("ip link set eth3 master vrf20")
tgen.gears["r2"].run("sysctl net.vrf.strict_mode=1")
tgen.gears["r2"].run("ip link add vrf10 type vrf table 10")
tgen.gears["r2"].run("ip link set vrf10 up")
tgen.gears["r2"].run("ip link add vrf20 type vrf table 20")
tgen.gears["r2"].run("ip link set vrf20 up")
tgen.gears["r2"].run("ip link set eth1 master vrf10")
tgen.gears["r2"].run("ip link set eth2 master vrf20")
tgen.gears["r2"].run("ip link set eth3 master vrf20")
tgen.start_router()
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def open_json_file(filename):
try:
with open(filename, "r") as f:
return json.load(f)
except IOError:
assert False, "Could not read file {}".format(filename)
def check_ping(name, dest_addr, expect_connected):
def _check(name, dest_addr, match):
tgen = get_topogen()
output = tgen.gears[name].run("ping {} -c 1 -w 1".format(dest_addr))
logger.info(output)
assert match in output, "ping fail"
match = "{} packet loss".format("0%" if expect_connected else "100%")
logger.info("[+] check {} {} {}".format(name, dest_addr, match))
tgen = get_topogen()
func = functools.partial(_check, name, dest_addr, match)
success, result = topotest.run_and_expect(func, None, count=10, wait=0.5)
assert result is None, "Failed"
def check_rib(name, cmd, expected_file):
def _check(name, dest_addr, match):
logger.info("polling")
tgen = get_topogen()
router = tgen.gears[name]
output = json.loads(router.vtysh_cmd(cmd))
expected = open_json_file("{}/{}".format(CWD, expected_file))
return topotest.json_cmp(output, expected)
logger.info("[+] check {} \"{}\" {}".format(name, cmd, expected_file))
tgen = get_topogen()
func = functools.partial(_check, name, cmd, expected_file)
success, result = topotest.run_and_expect(func, None, count=10, wait=0.5)
assert result is None, "Failed"
def test_rib():
check_rib("r1", "show bgp ipv4 vpn json", "r1/vpnv4_rib.json")
check_rib("r2", "show bgp ipv4 vpn json", "r2/vpnv4_rib.json")
check_rib("r1", "show ip route vrf vrf10 json", "r1/vrf10_rib.json")
check_rib("r1", "show ip route vrf vrf20 json", "r1/vrf20_rib.json")
check_rib("r2", "show ip route vrf vrf10 json", "r2/vrf10_rib.json")
check_rib("r2", "show ip route vrf vrf20 json", "r2/vrf20_rib.json")
check_rib("ce1", "show ip route json", "ce1/ip_rib.json")
check_rib("ce2", "show ip route json", "ce2/ip_rib.json")
check_rib("ce3", "show ip route json", "ce3/ip_rib.json")
check_rib("ce4", "show ip route json", "ce4/ip_rib.json")
check_rib("ce5", "show ip route json", "ce5/ip_rib.json")
check_rib("ce6", "show ip route json", "ce6/ip_rib.json")
def test_ping():
check_ping("ce1", "192.168.2.2", " 0% packet loss")
check_ping("ce1", "192.168.3.2", " 0% packet loss")
check_ping("ce1", "192.168.4.2", " 100% packet loss")
check_ping("ce1", "192.168.5.2", " 100% packet loss")
check_ping("ce1", "192.168.6.2", " 100% packet loss")
check_ping("ce4", "192.168.1.2", " 100% packet loss")
check_ping("ce4", "192.168.2.2", " 100% packet loss")
check_ping("ce4", "192.168.3.2", " 100% packet loss")
check_ping("ce4", "192.168.5.2", " 0% packet loss")
check_ping("ce4", "192.168.6.2", " 0% packet loss")
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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