tests/topotests/ospf_unnumbered/test_ospf_unnumbered.py

   1 #!/usr/bin/env python
   2 # SPDX-License-Identifier: ISC
   3
   4 #
   5 # test_ospf_unnumbered.py
   6 #
   7 # Copyright (c) 2019 by
   8 # Cumulus Networks, Inc
   9 # Donald Sharp
  10 #
  11
  12 """
  13 test_ospf_unnumbered.py: Test the OSPF unnumbered.
  14 """
  15
  16 import os
  17 import sys
  18 from functools import partial
  19 import pytest
  20 import json
  21
  22 # Save the Current Working Directory to find configuration files.
  23 CWD = os.path.dirname(os.path.realpath(__file__))
  24 sys.path.append(os.path.join(CWD, "../"))
  25
  26 # pylint: disable=C0413
  27 # Import topogen and topotest helpers
  28 from lib import topotest
  29 from lib.topogen import Topogen, TopoRouter, get_topogen
  30 from lib.topolog import logger
  31
  32 # Required to instantiate the topology builder class.
  33
  34 pytestmark = [pytest.mark.ospfd]
  35
  36
  37 CWD = os.path.dirname(os.path.realpath(__file__))
  38
  39
  40 def build_topo(tgen):
  41     "Build function"
  42
  43     # Create 4 routers
  44     for routern in range(1, 3):
  45         tgen.add_router("r{}".format(routern))
  46
  47     # Create a empty network for router 1
  48     switch = tgen.add_switch("s1")
  49     switch.add_link(tgen.gears["r1"])
  50
  51     # Create a empty network for router 2
  52     switch = tgen.add_switch("s2")
  53     switch.add_link(tgen.gears["r2"])
  54
  55     # Interconect router 1, 2
  56     switch = tgen.add_switch("s3")
  57     switch.add_link(tgen.gears["r1"])
  58     switch.add_link(tgen.gears["r2"])
  59
  60
  61 def setup_module(mod):
  62     "Sets up the pytest environment"
  63     tgen = Topogen(build_topo, mod.__name__)
  64     tgen.start_topology()
  65
  66     router_list = tgen.routers()
  67     for rname, router in router_list.items():
  68         router.load_config(
  69             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  70         )
  71         router.load_config(
  72             TopoRouter.RD_OSPF, os.path.join(CWD, "{}/ospfd.conf".format(rname))
  73         )
  74
  75         # What is this?  OSPF Unnumbered depends on the rp_filter
  76         # being set appropriately( HA! )
  77         # Effectively we are putting different /32's on the interface
  78         # the multicast packet delivery is somewhat controlled by
  79         # the rp_filter.  Setting it to '0' allows the OS to pass
  80         # up the mcast packet not destined for the local routers
  81         # network.
  82         topotest.sysctl_assure(tgen.net["r1"], "net.ipv4.conf.r1-eth1.rp_filter", 0)
  83         topotest.sysctl_assure(tgen.net["r1"], "net.ipv4.conf.all.rp_filter", 0)
  84         topotest.sysctl_assure(tgen.net["r2"], "net.ipv4.conf.r2-eth1.rp_filter", 0)
  85         topotest.sysctl_assure(tgen.net["r2"], "net.ipv4.conf.all.rp_filter", 0)
  86
  87     # Initialize all routers.
  88     tgen.start_router()
  89     # tgen.mininet_cli()
  90
  91
  92 def teardown_module(mod):
  93     "Teardown the pytest environment"
  94     tgen = get_topogen()
  95     tgen.stop_topology()
  96
  97
  98 def test_ospf_convergence():
  99     "Test OSPF daemon convergence and that we have received the ospf routes"
 100     tgen = get_topogen()
 101     if tgen.routers_have_failure():
 102         pytest.skip("skipped because of router(s) failure")
 103
 104     for router, rnode in tgen.routers().items():
 105         logger.info('Waiting for router "%s" convergence', router)
 106
 107         json_file = "{}/{}/ospf-route.json".format(CWD, router)
 108         expected = json.loads(open(json_file).read())
 109
 110         test_func = partial(
 111             topotest.router_json_cmp, rnode, "show ip ospf route json", expected
 112         )
 113         _, result = topotest.run_and_expect(test_func, None, count=160, wait=0.5)
 114         assertmsg = '"{}" JSON output mismatches'.format(router)
 115         assert result is None, assertmsg
 116     # tgen.mininet_cli()
 117
 118
 119 def test_ospf_kernel_route():
 120     "Test OSPF kernel route installation and we have the onlink success"
 121     tgen = get_topogen()
 122     if tgen.routers_have_failure():
 123         pytest.skip("skipped because of router(s) failure")
 124
 125     rlist = tgen.routers().values()
 126     for router in rlist:
 127         logger.info('Checking OSPF IPv4 kernel routes in "%s"', router.name)
 128
 129         json_file = "{}/{}/v4_route.json".format(CWD, router.name)
 130         expected = json.loads(open(json_file).read())
 131
 132         test_func = partial(
 133             topotest.router_json_cmp, router, "show ip route json", expected
 134         )
 135         _, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
 136         assertmsg = '"{}" JSON output mistmatches'.format(router)
 137         assert result is None, assertmsg
 138     # tgen.mininet_cli()
 139
 140
 141 def test_memory_leak():
 142     "Run the memory leak test and report results."
 143     tgen = get_topogen()
 144     if not tgen.is_memleak_enabled():
 145         pytest.skip("Memory leak test/report is disabled")
 146
 147     tgen.report_memory_leaks()
 148
 149
 150 if __name__ == "__main__":
 151     args = ["-s"] + sys.argv[1:]
 152     sys.exit(pytest.main(args))