tests/topotests/bgp_evpn_rt5/test_bgp_evpn.py

   1 #!/usr/bin/env python
   2
   3 #
   4 # test_bgp_evpn.py
   5 # Part of NetDEF Topology Tests
   6 #
   7 # Copyright (c) 2019 by 6WIND
   8 #
   9 # Permission to use, copy, modify, and/or distribute this software
  10 # for any purpose with or without fee is hereby granted, provided
  11 # that the above copyright notice and this permission notice appear
  12 # in all copies.
  13 #
  14 # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
  15 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  16 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
  17 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  18 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  19 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  20 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  21 # OF THIS SOFTWARE.
  22 #
  23
  24 """
  25  test_bgp_evpn.py: Test the FRR BGP daemon with BGP IPv6 interface
  26  with route advertisements on a separate netns.
  27 """
  28
  29 import os
  30 import sys
  31 import json
  32 from functools import partial
  33 import pytest
  34 import platform
  35
  36 # Save the Current Working Directory to find configuration files.
  37 CWD = os.path.dirname(os.path.realpath(__file__))
  38 sys.path.append(os.path.join(CWD, "../"))
  39
  40 # pylint: disable=C0413
  41 # Import topogen and topotest helpers
  42 from lib import topotest
  43 from lib.topogen import Topogen, TopoRouter, get_topogen
  44 from lib.topolog import logger
  45 from lib.common_config import adjust_router_l3mdev
  46
  47 # Required to instantiate the topology builder class.
  48 from mininet.topo import Topo
  49
  50
  51 class BGPEVPNTopo(Topo):
  52     "Test topology builder"
  53
  54     def build(self, *_args, **_opts):
  55         "Build function"
  56         tgen = get_topogen(self)
  57
  58         tgen.add_router("r1")
  59         tgen.add_router("r2")
  60
  61         switch = tgen.add_switch("s1")
  62         switch.add_link(tgen.gears["r1"])
  63         switch.add_link(tgen.gears["r2"])
  64
  65         switch = tgen.add_switch("s2")
  66         switch.add_link(tgen.gears["r1"])
  67
  68         switch = tgen.add_switch("s3")
  69         switch.add_link(tgen.gears["r2"])
  70
  71
  72 def setup_module(mod):
  73     "Sets up the pytest environment"
  74
  75     tgen = Topogen(BGPEVPNTopo, mod.__name__)
  76     tgen.start_topology()
  77
  78     router_list = tgen.routers()
  79
  80     krel = platform.release()
  81     if topotest.version_cmp(krel, "4.18") < 0:
  82         logger.info(
  83             'BGP EVPN RT5 NETNS tests will not run (have kernel "{}", but it requires 4.18)'.format(
  84                 krel
  85             )
  86         )
  87         return pytest.skip("Skipping BGP EVPN RT5 NETNS Test. Kernel not supported")
  88
  89     # create VRF vrf-101 on R1 and R2
  90     # create loop101
  91     cmds_vrflite = [
  92         "ip link add {}-vrf-101 type vrf table 101",
  93         "ip ru add oif {}-vrf-101 table 101",
  94         "ip ru add iif {}-vrf-101 table 101",
  95         "ip link set dev {}-vrf-101 up",
  96         "ip link add loop101 type dummy",
  97         "ip link set dev loop101 master {}-vrf-101",
  98         "ip link set dev loop101 up",
  99     ]
 100     cmds_netns = [
 101         "ip netns add {}-vrf-101",
 102         "ip link add loop101 type dummy",
 103         "ip link set dev loop101 netns {}-vrf-101",
 104         "ip netns exec {}-vrf-101 ip link set dev loop101 up",
 105     ]
 106
 107     cmds_r2 = [  # config routing 101
 108         "ip link add name bridge-101 up type bridge stp_state 0",
 109         "ip link set bridge-101 master {}-vrf-101",
 110         "ip link set dev bridge-101 up",
 111         "ip link add name vxlan-101 type vxlan id 101 dstport 4789 dev r2-eth0 local 192.168.100.41",
 112         "ip link set dev vxlan-101 master bridge-101",
 113         "ip link set vxlan-101 up type bridge_slave learning off flood off mcast_flood off",
 114     ]
 115
 116     cmds_r1_netns_method3 = [
 117         "ip link add name vxlan-{1} type vxlan id {1} dstport 4789 dev {0}-eth0 local 192.168.100.21",
 118         "ip link set dev vxlan-{1} netns {0}-vrf-{1}",
 119         "ip netns exec {0}-vrf-{1} ip li set dev lo up",
 120         "ip netns exec {0}-vrf-{1} ip link add name bridge-{1} up type bridge stp_state 0",
 121         "ip netns exec {0}-vrf-{1} ip link set dev vxlan-{1} master bridge-{1}",
 122         "ip netns exec {0}-vrf-{1} ip link set bridge-{1} up",
 123         "ip netns exec {0}-vrf-{1} ip link set vxlan-{1} up",
 124     ]
 125
 126     router = tgen.gears["r1"]
 127     for cmd in cmds_netns:
 128         logger.info("cmd to r1: " + cmd)
 129         output = router.run(cmd.format("r1"))
 130         logger.info("result: " + output)
 131
 132     router = tgen.gears["r2"]
 133     adjust_router_l3mdev(tgen, "r2")
 134     for cmd in cmds_vrflite:
 135         logger.info("cmd to r2: " + cmd.format("r2"))
 136         output = router.run(cmd.format("r2"))
 137         logger.info("result: " + output)
 138
 139     for cmd in cmds_r2:
 140         logger.info("cmd to r2: " + cmd.format("r2"))
 141         output = router.run(cmd.format("r2"))
 142         logger.info("result: " + output)
 143
 144     router = tgen.gears["r1"]
 145     bridge_id = "101"
 146     for cmd in cmds_r1_netns_method3:
 147         logger.info("cmd to r1: " + cmd.format("r1", bridge_id))
 148         output = router.run(cmd.format("r1", bridge_id))
 149         logger.info("result: " + output)
 150     router = tgen.gears["r1"]
 151
 152     for rname, router in router_list.items():
 153         if rname == "r1":
 154             router.load_config(
 155                 TopoRouter.RD_ZEBRA,
 156                 os.path.join(CWD, "{}/zebra.conf".format(rname)),
 157                 "--vrfwnetns -o vrf0",
 158             )
 159         else:
 160             router.load_config(
 161                 TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
 162             )
 163         router.load_config(
 164             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
 165         )
 166
 167     # Initialize all routers.
 168     tgen.start_router()
 169
 170
 171 def teardown_module(_mod):
 172     "Teardown the pytest environment"
 173     tgen = get_topogen()
 174     cmds_rx_netns = ["ip netns del {}-vrf-101"]
 175
 176     router = tgen.gears["r1"]
 177     for cmd in cmds_rx_netns:
 178         logger.info("cmd to r1: " + cmd.format("r1"))
 179         output = router.run(cmd.format("r1"))
 180     tgen.stop_topology()
 181
 182
 183 def test_protocols_convergence():
 184     """
 185     Assert that all protocols have converged
 186     statuses as they depend on it.
 187     """
 188     tgen = get_topogen()
 189     if tgen.routers_have_failure():
 190         pytest.skip(tgen.errors)
 191     topotest.sleep(4, "waiting 4 seconds for bgp convergence")
 192     # Check IPv4/IPv6 routing tables.
 193     output = tgen.gears["r1"].vtysh_cmd("show bgp l2vpn evpn", isjson=False)
 194     logger.info("==== result from show bgp l2vpn evpn")
 195     logger.info(output)
 196     output = tgen.gears["r1"].vtysh_cmd(
 197         "show bgp l2vpn evpn route detail", isjson=False
 198     )
 199     logger.info("==== result from show bgp l2vpn evpn route detail")
 200     logger.info(output)
 201     output = tgen.gears["r1"].vtysh_cmd("show bgp vrf r1-vrf-101 ipv4", isjson=False)
 202     logger.info("==== result from show bgp vrf r1-vrf-101 ipv4")
 203     logger.info(output)
 204     output = tgen.gears["r1"].vtysh_cmd("show bgp vrf r1-vrf-101", isjson=False)
 205     logger.info("==== result from show bgp vrf r1-vrf-101 ")
 206     logger.info(output)
 207     output = tgen.gears["r1"].vtysh_cmd("show ip route vrf r1-vrf-101", isjson=False)
 208     logger.info("==== result from show ip route vrf r1-vrf-101")
 209     logger.info(output)
 210     output = tgen.gears["r1"].vtysh_cmd("show evpn vni detail", isjson=False)
 211     logger.info("==== result from show evpn vni detail")
 212     logger.info(output)
 213     output = tgen.gears["r1"].vtysh_cmd("show evpn next-hops vni all", isjson=False)
 214     logger.info("==== result from show evpn next-hops vni all")
 215     logger.info(output)
 216     output = tgen.gears["r1"].vtysh_cmd("show evpn rmac vni all", isjson=False)
 217     logger.info("==== result from show evpn next-hops vni all")
 218     logger.info(output)
 219     # Check IPv4 and IPv6 connectivity between r1 and r2 ( routing vxlan evpn)
 220     pingrouter = tgen.gears["r1"]
 221     logger.info(
 222         "Check Ping IPv4 from  R1(r1-vrf-101) to R2(r2-vrf-101 = 192.168.101.41)"
 223     )
 224     output = pingrouter.run("ip netns exec r1-vrf-101 ping 192.168.101.41 -f -c 1000")
 225     logger.info(output)
 226     if "1000 packets transmitted, 1000 received" not in output:
 227         assertmsg = (
 228             "expected ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) should be ok"
 229         )
 230         assert 0, assertmsg
 231     else:
 232         logger.info("Check Ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) OK")
 233
 234
 235 def test_memory_leak():
 236     "Run the memory leak test and report results."
 237     tgen = get_topogen()
 238     if not tgen.is_memleak_enabled():
 239         pytest.skip("Memory leak test/report is disabled")
 240
 241     tgen.report_memory_leaks()
 242
 243
 244 if __name__ == "__main__":
 245     args = ["-s"] + sys.argv[1:]
 246     sys.exit(pytest.main(args))