tests/topotests/bgp_vpnv4_gre/test_bgp_vpnv4_gre.py

   1 #!/usr/bin/env python
   2
   3 #
   4 # test_bgp_vpnv4_gre.py
   5 # Part of NetDEF Topology Tests
   6 #
   7 # Copyright (c) 2021 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_vpnv4_gre.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
  35 # Save the Current Working Directory to find configuration files.
  36 CWD = os.path.dirname(os.path.realpath(__file__))
  37 sys.path.append(os.path.join(CWD, "../"))
  38
  39 # pylint: disable=C0413
  40 # Import topogen and topotest helpers
  41 from lib import topotest
  42 from lib.topogen import Topogen, TopoRouter, get_topogen
  43 from lib.topolog import logger
  44
  45 # Required to instantiate the topology builder class.
  46
  47
  48 pytestmark = [pytest.mark.bgpd]
  49
  50
  51 def build_topo(tgen):
  52     "Build function"
  53
  54     # Create 2 routers.
  55     tgen.add_router("r1")
  56     tgen.add_router("r2")
  57
  58     switch = tgen.add_switch("s1")
  59     switch.add_link(tgen.gears["r1"])
  60     switch.add_link(tgen.gears["r2"])
  61
  62     switch = tgen.add_switch("s2")
  63     switch.add_link(tgen.gears["r1"])
  64
  65     switch = tgen.add_switch("s3")
  66     switch.add_link(tgen.gears["r2"])
  67
  68 def _populate_iface():
  69     tgen = get_topogen()
  70     cmds_list = [
  71         'ip link add vrf1 type vrf table 10',
  72         'echo 10 > /proc/sys/net/mpls/platform_labels',
  73         'ip link set dev vrf1 up',
  74         'ip link set dev {0}-eth1 master vrf1',
  75         'echo 1 > /proc/sys/net/mpls/conf/{0}-eth0/input',
  76         'ip tunnel add {0}-gre0 mode gre ttl 64 dev {0}-eth0 local 10.125.0.{1} remote 10.125.0.{2}',
  77         'ip link set dev {0}-gre0 up',
  78         'echo 1 > /proc/sys/net/mpls/conf/{0}-gre0/input',
  79     ]
  80
  81     for cmd in cmds_list:
  82         input = cmd.format('r1', '1', '2')
  83         logger.info('input: ' + cmd)
  84         output = tgen.net['r1'].cmd(cmd.format('r1', '1', '2'))
  85         logger.info('output: ' + output)
  86
  87     for cmd in cmds_list:
  88         input = cmd.format('r2', '2', '1')
  89         logger.info('input: ' + cmd)
  90         output = tgen.net['r2'].cmd(cmd.format('r2', '2', '1'))
  91         logger.info('output: ' + output)
  92
  93 def setup_module(mod):
  94     "Sets up the pytest environment"
  95     tgen = Topogen(build_topo, mod.__name__)
  96     tgen.start_topology()
  97
  98     router_list = tgen.routers()
  99     _populate_iface()
 100
 101     for rname, router in router_list.items():
 102         router.load_config(
 103             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
 104         )
 105         router.load_config(
 106             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
 107         )
 108
 109     # Initialize all routers.
 110     tgen.start_router()
 111
 112
 113 def teardown_module(_mod):
 114     "Teardown the pytest environment"
 115     tgen = get_topogen()
 116
 117     tgen.stop_topology()
 118
 119
 120 def test_protocols_convergence():
 121     """
 122     Assert that all protocols have converged
 123     statuses as they depend on it.
 124     """
 125     tgen = get_topogen()
 126     if tgen.routers_have_failure():
 127         pytest.skip(tgen.errors)
 128
 129     router = tgen.gears['r1']
 130     logger.info("Dump some context for r1")
 131     router.vtysh_cmd("show bgp ipv4 vpn")
 132     router.vtysh_cmd("show bgp summary")
 133     router.vtysh_cmd("show bgp vrf vrf1 ipv4")
 134     router.vtysh_cmd("show running-config")
 135     router = tgen.gears['r2']
 136     logger.info("Dump some context for r2")
 137     router.vtysh_cmd("show bgp ipv4 vpn")
 138     router.vtysh_cmd("show bgp summary")
 139     router.vtysh_cmd("show bgp vrf vrf1 ipv4")
 140     router.vtysh_cmd("show running-config")
 141
 142     # Check IPv4 routing tables on r1
 143     logger.info("Checking IPv4 routes for convergence on r1")
 144     router = tgen.gears['r1']
 145     json_file = "{}/{}/ipv4_routes.json".format(CWD, router.name)
 146     if not os.path.isfile(json_file):
 147         logger.info("skipping file {}".format(json_file))
 148         assert 0, 'ipv4_routes.json file not found'
 149         return
 150
 151     expected = json.loads(open(json_file).read())
 152     test_func = partial(
 153         topotest.router_json_cmp,
 154         router,
 155         "show ip route vrf vrf1 json",
 156         expected,
 157     )
 158     _, result = topotest.run_and_expect(test_func, None, count=40, wait=2)
 159     assertmsg = '"{}" JSON output mismatches'.format(router.name)
 160     assert result is None, assertmsg
 161
 162     # Check BGP IPv4 routing tables on r2 not installed
 163     logger.info("Checking BGP IPv4 routes for convergence on r2")
 164     router = tgen.gears['r2']
 165     json_file = "{}/{}/bgp_ipv4_routes.json".format(CWD, router.name)
 166     if not os.path.isfile(json_file):
 167         assert 0, 'bgp_ipv4_routes.json file not found'
 168
 169     expected = json.loads(open(json_file).read())
 170     test_func = partial(
 171         topotest.router_json_cmp,
 172         router,
 173         "show bgp vrf vrf1 ipv4 json",
 174         expected,
 175     )
 176     _, result = topotest.run_and_expect(test_func, None, count=40, wait=2)
 177     assertmsg = '"{}" JSON output mismatches'.format(router.name)
 178     assert result is None, assertmsg
 179
 180 def test_memory_leak():
 181     "Run the memory leak test and report results."
 182     tgen = get_topogen()
 183     if not tgen.is_memleak_enabled():
 184         pytest.skip("Memory leak test/report is disabled")
 185
 186     tgen.report_memory_leaks()
 187
 188
 189 if __name__ == "__main__":
 190     args = ["-s"] + sys.argv[1:]
 191     sys.exit(pytest.main(args))