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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# test_bgp_evpn.py
# Part of NetDEF Topology Tests
#
# Copyright (c) 2019 by 6WIND
#
"""
test_bgp_evpn.py: Test the FRR BGP daemon with BGP IPv6 interface
with route advertisements on a separate netns.
"""
import os
import sys
import pytest
import platform
# 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.bgpd]
def build_topo(tgen):
"Build function"
tgen.add_router("r1")
tgen.add_router("r2")
switch = tgen.add_switch("s1")
switch.add_link(tgen.gears["r1"])
switch.add_link(tgen.gears["r2"])
switch = tgen.add_switch("s2")
switch.add_link(tgen.gears["r1"])
switch = tgen.add_switch("s3")
switch.add_link(tgen.gears["r2"])
def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
krel = platform.release()
if topotest.version_cmp(krel, "4.18") < 0:
logger.info(
'BGP EVPN RT5 NETNS tests will not run (have kernel "{}", but it requires 4.18)'.format(
krel
)
)
return pytest.skip("Skipping BGP EVPN RT5 NETNS Test. Kernel not supported")
# create VRF vrf-101 on R1 and R2
# create loop101
cmds_vrflite = [
"ip link add {}-vrf-101 type vrf table 101",
"ip ru add oif {}-vrf-101 table 101",
"ip ru add iif {}-vrf-101 table 101",
"ip link set dev {}-vrf-101 up",
"ip link add loop101 type dummy",
"ip link set dev loop101 master {}-vrf-101",
"ip link set dev loop101 up",
]
cmds_r2 = [ # config routing 101
"ip link add name bridge-101 up type bridge stp_state 0",
"ip link set bridge-101 master {}-vrf-101",
"ip link set dev bridge-101 up",
"ip link add name vxlan-101 type vxlan id 101 dstport 4789 dev r2-eth0 local 192.168.100.41",
"ip link set dev vxlan-101 master bridge-101",
"ip link set vxlan-101 up type bridge_slave learning off flood off mcast_flood off",
]
# cmds_r1_netns_method3 = [
# "ip link add name vxlan-{1} type vxlan id {1} dstport 4789 dev {0}-eth0 local 192.168.100.21",
# "ip link set dev vxlan-{1} netns {0}-vrf-{1}",
# "ip netns exec {0}-vrf-{1} ip li set dev lo up",
# "ip netns exec {0}-vrf-{1} ip link add name bridge-{1} up type bridge stp_state 0",
# "ip netns exec {0}-vrf-{1} ip link set dev vxlan-{1} master bridge-{1}",
# "ip netns exec {0}-vrf-{1} ip link set bridge-{1} up",
# "ip netns exec {0}-vrf-{1} ip link set vxlan-{1} up",
# ]
router = tgen.gears["r1"]
ns = "r1-vrf-101"
tgen.net["r1"].add_netns(ns)
tgen.net["r1"].cmd_raises("ip link add loop101 type dummy")
tgen.net["r1"].set_intf_netns("loop101", ns, up=True)
router = tgen.gears["r2"]
for cmd in cmds_vrflite:
logger.info("cmd to r2: " + cmd.format("r2"))
output = router.cmd_raises(cmd.format("r2"))
logger.info("result: " + output)
for cmd in cmds_r2:
logger.info("cmd to r2: " + cmd.format("r2"))
output = router.cmd_raises(cmd.format("r2"))
logger.info("result: " + output)
tgen.net["r1"].cmd_raises(
"ip link add name vxlan-101 type vxlan id 101 dstport 4789 dev r1-eth0 local 192.168.100.21"
)
tgen.net["r1"].set_intf_netns("vxlan-101", "r1-vrf-101", up=True)
tgen.net["r1"].cmd_raises("ip -n r1-vrf-101 link set lo up")
tgen.net["r1"].cmd_raises(
"ip -n r1-vrf-101 link add name bridge-101 up type bridge stp_state 0"
)
tgen.net["r1"].cmd_raises(
"ip -n r1-vrf-101 link set dev vxlan-101 master bridge-101"
)
tgen.net["r1"].cmd_raises("ip -n r1-vrf-101 link set bridge-101 up")
tgen.net["r1"].cmd_raises("ip -n r1-vrf-101 link set vxlan-101 up")
for rname, router in router_list.items():
if rname == "r1":
router.load_config(
TopoRouter.RD_ZEBRA,
os.path.join(CWD, "{}/zebra.conf".format(rname)),
"--vrfwnetns",
)
else:
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))
)
# Initialize all routers.
tgen.start_router()
def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.net["r1"].delete_netns("r1-vrf-101")
tgen.stop_topology()
def test_protocols_convergence():
"""
Assert that all protocols have converged
statuses as they depend on it.
"""
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
topotest.sleep(4, "waiting 4 seconds for bgp convergence")
# Check IPv4/IPv6 routing tables.
output = tgen.gears["r1"].vtysh_cmd("show bgp l2vpn evpn", isjson=False)
logger.info("==== result from show bgp l2vpn evpn")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd(
"show bgp l2vpn evpn route detail", isjson=False
)
logger.info("==== result from show bgp l2vpn evpn route detail")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd("show bgp vrf r1-vrf-101 ipv4", isjson=False)
logger.info("==== result from show bgp vrf r1-vrf-101 ipv4")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd("show bgp vrf r1-vrf-101", isjson=False)
logger.info("==== result from show bgp vrf r1-vrf-101 ")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd("show ip route vrf r1-vrf-101", isjson=False)
logger.info("==== result from show ip route vrf r1-vrf-101")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd("show evpn vni detail", isjson=False)
logger.info("==== result from show evpn vni detail")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd("show evpn next-hops vni all", isjson=False)
logger.info("==== result from show evpn next-hops vni all")
logger.info(output)
output = tgen.gears["r1"].vtysh_cmd("show evpn rmac vni all", isjson=False)
logger.info("==== result from show evpn next-hops vni all")
logger.info(output)
# Check IPv4 and IPv6 connectivity between r1 and r2 ( routing vxlan evpn)
pingrouter = tgen.gears["r1"]
logger.info(
"Check Ping IPv4 from R1(r1-vrf-101) to R2(r2-vrf-101 = 192.168.101.41)"
)
output = pingrouter.run("ip netns exec r1-vrf-101 ping 192.168.101.41 -f -c 1000")
logger.info(output)
if "1000 packets transmitted, 1000 received" not in output:
assertmsg = (
"expected ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) should be ok"
)
assert 0, assertmsg
else:
logger.info("Check Ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) OK")
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))
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