Adding upstream version 10.1.1.upstream/10.1.1

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 161 insertions, 0 deletions

diff --git a/tests/topotests/bgp_blackhole_community/test_bgp_blackhole_community.py b/tests/topotests/bgp_blackhole_community/test_bgp_blackhole_community.py
new file mode 100644
index 00000000..9f5c0ef9
--- /dev/null
+++ b/tests/topotests/bgp_blackhole_community/test_bgp_blackhole_community.py
@@ -0,0 +1,161 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: ISC
+
+#
+# Copyright (c) 2021 by
+# Donatas Abraitis <donatas.abraitis@gmail.com>
+#
+
+"""
+Test if 172.16.255.254/32 tagged with BLACKHOLE community is not
+re-advertised downstream outside local AS.
+"""
+
+import os
+import sys
+import json
+import pytest
+import functools
+
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, "../"))
+
+# pylint: disable=C0413
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.common_config import step
+
+pytestmark = [pytest.mark.bgpd]
+
+
+def build_topo(tgen):
+    for routern in range(1, 5):
+        tgen.add_router("r{}".format(routern))
+
+    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["r2"])
+    switch.add_link(tgen.gears["r3"])
+
+    switch = tgen.add_switch("s3")
+    switch.add_link(tgen.gears["r2"])
+    switch.add_link(tgen.gears["r4"])
+
+
+def setup_module(mod):
+    tgen = Topogen(build_topo, mod.__name__)
+    tgen.start_topology()
+
+    router_list = tgen.routers()
+
+    for i, (rname, router) in enumerate(router_list.items(), 1):
+        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))
+        )
+
+    tgen.start_router()
+
+
+def teardown_module(mod):
+    tgen = get_topogen()
+    tgen.stop_topology()
+
+
+def test_bgp_blackhole_community():
+    tgen = get_topogen()
+
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    def _bgp_converge():
+        output = json.loads(
+            tgen.gears["r2"].vtysh_cmd("show ip bgp 172.16.255.254/32 json")
+        )
+        expected = {"paths": [{"community": {"list": ["blackhole", "noExport"]}}]}
+        return topotest.json_cmp(output, expected)
+
+    def _bgp_no_advertise_ebgp():
+        output = json.loads(
+            tgen.gears["r2"].vtysh_cmd(
+                "show ip bgp neighbor r2-eth1 advertised-routes json"
+            )
+        )
+        expected = {
+            "advertisedRoutes": {},
+            "totalPrefixCounter": 0,
+            "filteredPrefixCounter": 0,
+        }
+
+        return topotest.json_cmp(output, expected)
+
+    def _bgp_no_advertise_ibgp():
+        output = json.loads(
+            tgen.gears["r2"].vtysh_cmd(
+                "show ip bgp neighbor r2-eth2 advertised-routes json"
+            )
+        )
+        expected = {
+            "advertisedRoutes": {"172.16.255.254/32": {}},
+            "totalPrefixCounter": 2,
+        }
+
+        return topotest.json_cmp(output, expected)
+
+    def _bgp_verify_nexthop_validity():
+        output = json.loads(tgen.gears["r4"].vtysh_cmd("show bgp nexthop json"))
+
+        expected = {
+            "ipv6": {
+                "fe80::202:ff:fe00:99": {
+                    "valid": True,
+                    "complete": True,
+                    "igpMetric": 0,
+                    "pathCount": 2,
+                    "nexthops": [{"interfaceName": "r4-eth0"}],
+                },
+            }
+        }
+
+        return topotest.json_cmp(output, expected)
+
+    test_func = functools.partial(_bgp_converge)
+    success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+
+    assert result is None, 'Failed bgp convergence in "{}"'.format(tgen.gears["r2"])
+
+    step("Check if 172.16.255.254/32 is not advertised to eBGP peers")
+
+    test_func = functools.partial(_bgp_no_advertise_ebgp)
+    success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+
+    assert (
+        result is None
+    ), 'Advertised blackhole tagged prefix to eBGP peers in "{}"'.format(
+        tgen.gears["r2"]
+    )
+
+    step("Check if 172.16.255.254/32 is advertised to iBGP peers")
+    test_func = functools.partial(_bgp_no_advertise_ibgp)
+    success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+
+    assert (
+        result is None
+    ), 'Withdrawn blackhole tagged prefix to iBGP peers in "{}"'.format(
+        tgen.gears["r2"]
+    )
+
+    step("Verify if the nexthop set via route-map on r4 is marked valid")
+    test_func = functools.partial(_bgp_verify_nexthop_validity)
+    success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+    assert result is None, 'Nexthops are not valid "{}"'.format(tgen.gears["r4"])
+
+
+if __name__ == "__main__":
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))