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
  46 # Required to instantiate the topology builder class.
  47 from mininet.topo import Topo
  48
  49
  50 class BGPEVPNTopo(Topo):
  51     "Test topology builder"
  52
  53     def build(self, *_args, **_opts):
  54         "Build function"
  55         tgen = get_topogen(self)
  56
  57         tgen.add_router("r1")
  58         tgen.add_router("r2")
  59
  60         switch = tgen.add_switch("s1")
  61         switch.add_link(tgen.gears["r1"])
  62         switch.add_link(tgen.gears["r2"])
  63
  64         switch = tgen.add_switch("s2")
  65         switch.add_link(tgen.gears["r1"])
  66
  67         switch = tgen.add_switch("s3")
  68         switch.add_link(tgen.gears["r2"])
  69
  70
  71 def setup_module(mod):
  72     "Sets up the pytest environment"
  73
  74     tgen = Topogen(BGPEVPNTopo, mod.__name__)
  75     tgen.start_topology()
  76
  77     router_list = tgen.routers()
  78
  79     krel = platform.release()
  80     if topotest.version_cmp(krel, "4.18") < 0:
  81         logger.info(
  82             'BGP EVPN RT5 NETNS tests will not run (have kernel "{}", but it requires 4.18)'.format(
  83                 krel
  84             )
  85         )
  86         return pytest.skip("Skipping BGP EVPN RT5 NETNS Test. Kernel not supported")
  87
  88     # create VRF vrf-101 on R1 and R2
  89     # create loop101
  90     cmds_vrflite = [
  91         "ip link add {}-vrf-101 type vrf table 101",
  92         "ip ru add oif {}-vrf-101 table 101",
  93         "ip ru add iif {}-vrf-101 table 101",
  94         "ip link set dev {}-vrf-101 up",
  95         "ip link add loop101 type dummy",
  96         "ip link set dev loop101 master {}-vrf-101",
  97         "ip link set dev loop101 up",
  98     ]
  99     cmds_netns = [
 100         "ip netns add {}-vrf-101",
 101         "ip link add loop101 type dummy",
 102         "ip link set dev loop101 netns {}-vrf-101",
 103         "ip netns exec {}-vrf-101 ip link set dev loop101 up",
 104     ]
 105
 106     cmds_r2 = [  # config routing 101
 107         "ip link add name bridge-101 up type bridge stp_state 0",
 108         "ip link set bridge-101 master {}-vrf-101",
 109         "ip link set dev bridge-101 up",
 110         "ip link add name vxlan-101 type vxlan id 101 dstport 4789 dev r2-eth0 local 192.168.100.41",
 111         "ip link set dev vxlan-101 master bridge-101",
 112         "ip link set vxlan-101 up type bridge_slave learning off flood off mcast_flood off",
 113     ]
 114
 115     cmds_r1_netns_method3 = [
 116         "ip link add name vxlan-{1} type vxlan id {1} dstport 4789 dev {0}-eth0 local 192.168.100.21",
 117         "ip link set dev vxlan-{1} netns {0}-vrf-{1}",
 118         "ip netns exec {0}-vrf-{1} ip li set dev lo up",
 119         "ip netns exec {0}-vrf-{1} ip link add name bridge-{1} up type bridge stp_state 0",
 120         "ip netns exec {0}-vrf-{1} ip link set dev vxlan-{1} master bridge-{1}",
 121         "ip netns exec {0}-vrf-{1} ip link set bridge-{1} up",
 122         "ip netns exec {0}-vrf-{1} ip link set vxlan-{1} up",
 123     ]
 124
 125     router = tgen.gears["r1"]
 126     for cmd in cmds_netns:
 127         logger.info("cmd to r1: " + cmd)
 128         output = router.run(cmd.format("r1"))
 129         logger.info("result: " + output)
 130
 131     router = tgen.gears["r2"]
 132     for cmd in cmds_vrflite:
 133         logger.info("cmd to r2: " + cmd.format("r2"))
 134         output = router.run(cmd.format("r2"))
 135         logger.info("result: " + output)
 136
 137     for cmd in cmds_r2:
 138         logger.info("cmd to r2: " + cmd.format("r2"))
 139         output = router.run(cmd.format("r2"))
 140         logger.info("result: " + output)
 141
 142     router = tgen.gears["r1"]
 143     bridge_id = "101"
 144     for cmd in cmds_r1_netns_method3:
 145         logger.info("cmd to r1: " + cmd.format("r1", bridge_id))
 146         output = router.run(cmd.format("r1", bridge_id))
 147         logger.info("result: " + output)
 148     router = tgen.gears["r1"]
 149
 150     for rname, router in router_list.items():
 151         if rname == "r1":
 152             router.load_config(
 153                 TopoRouter.RD_ZEBRA,
 154                 os.path.join(CWD, "{}/zebra.conf".format(rname)),
 155                 "--vrfwnetns -o vrf0",
 156             )
 157         else:
 158             router.load_config(
 159                 TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
 160             )
 161         router.load_config(
 162             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
 163         )
 164
 165     # Initialize all routers.
 166     tgen.start_router()
 167
 168
 169 def teardown_module(_mod):
 170     "Teardown the pytest environment"
 171     tgen = get_topogen()
 172     cmds_rx_netns = ["ip netns del {}-vrf-101"]
 173
 174     router = tgen.gears["r1"]
 175     for cmd in cmds_rx_netns:
 176         logger.info("cmd to r1: " + cmd.format("r1"))
 177         output = router.run(cmd.format("r1"))
 178     tgen.stop_topology()
 179
 180
 181 def test_protocols_convergence():
 182     """
 183     Assert that all protocols have converged
 184     statuses as they depend on it.
 185     """
 186     tgen = get_topogen()
 187     if tgen.routers_have_failure():
 188         pytest.skip(tgen.errors)
 189     topotest.sleep(4, "waiting 4 seconds for bgp convergence")
 190     # Check IPv4/IPv6 routing tables.
 191     output = tgen.gears["r1"].vtysh_cmd("show bgp l2vpn evpn", isjson=False)
 192     logger.info("==== result from show bgp l2vpn evpn")
 193     logger.info(output)
 194     output = tgen.gears["r1"].vtysh_cmd(
 195         "show bgp l2vpn evpn route detail", isjson=False
 196     )
 197     logger.info("==== result from show bgp l2vpn evpn route detail")
 198     logger.info(output)
 199     output = tgen.gears["r1"].vtysh_cmd("show bgp vrf r1-vrf-101 ipv4", isjson=False)
 200     logger.info("==== result from show bgp vrf r1-vrf-101 ipv4")
 201     logger.info(output)
 202     output = tgen.gears["r1"].vtysh_cmd("show bgp vrf r1-vrf-101", isjson=False)
 203     logger.info("==== result from show bgp vrf r1-vrf-101 ")
 204     logger.info(output)
 205     output = tgen.gears["r1"].vtysh_cmd("show ip route vrf r1-vrf-101", isjson=False)
 206     logger.info("==== result from show ip route vrf r1-vrf-101")
 207     logger.info(output)
 208     output = tgen.gears["r1"].vtysh_cmd("show evpn vni detail", isjson=False)
 209     logger.info("==== result from show evpn vni detail")
 210     logger.info(output)
 211     output = tgen.gears["r1"].vtysh_cmd("show evpn next-hops vni all", isjson=False)
 212     logger.info("==== result from show evpn next-hops vni all")
 213     logger.info(output)
 214     output = tgen.gears["r1"].vtysh_cmd("show evpn rmac vni all", isjson=False)
 215     logger.info("==== result from show evpn next-hops vni all")
 216     logger.info(output)
 217     # Check IPv4 and IPv6 connectivity between r1 and r2 ( routing vxlan evpn)
 218     pingrouter = tgen.gears["r1"]
 219     logger.info(
 220         "Check Ping IPv4 from  R1(r1-vrf-101) to R2(r2-vrf-101 = 192.168.101.41)"
 221     )
 222     output = pingrouter.run("ip netns exec r1-vrf-101 ping 192.168.101.41 -f -c 1000")
 223     logger.info(output)
 224     if "1000 packets transmitted, 1000 received" not in output:
 225         assertmsg = (
 226             "expected ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) should be ok"
 227         )
 228         assert 0, assertmsg
 229     else:
 230         logger.info("Check Ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) OK")
 231
 232
 233 def test_memory_leak():
 234     "Run the memory leak test and report results."
 235     tgen = get_topogen()
 236     if not tgen.is_memleak_enabled():
 237         pytest.skip("Memory leak test/report is disabled")
 238
 239     tgen.report_memory_leaks()
 240
 241
 242 if __name__ == "__main__":
 243     args = ["-s"] + sys.argv[1:]
 244     sys.exit(pytest.main(args))