--- /dev/null
+#!/usr/bin/env python
+
+# Copyright (c) 2021 by
+# Donatas Abraitis <donatas.abraitis@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+#
+
+"""
+Test if AddPath RX direction is not negotiated via AddPath capability.
+"""
+
+import os
+import sys
+import json
+import time
+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.topolog import logger
+from mininet.topo import Topo
+from lib.common_config import step
+
+pytestmark = [pytest.mark.bgpd]
+
+
+class TemplateTopo(Topo):
+ def build(self, *_args, **_opts):
+ tgen = get_topogen(self)
+
+ 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.add_link(tgen.gears["r4"])
+
+
+def setup_module(mod):
+ tgen = Topogen(TemplateTopo, 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_disable_addpath_rx():
+ tgen = get_topogen()
+
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ r1 = tgen.gears["r1"]
+ r2 = tgen.gears["r2"]
+
+ step(
+ "Check if r2 advertised only 2 paths to r1 (despite addpath-tx-all-paths enabled on r2)."
+ )
+
+ def check_bgp_advertised_routes(router):
+ output = json.loads(
+ router.vtysh_cmd(
+ "show bgp ipv4 unicast neighbor 192.168.1.1 advertised-routes json"
+ )
+ )
+ expected = {
+ "advertisedRoutes": {
+ "172.16.16.254/32": {
+ "addrPrefix": "172.16.16.254",
+ "prefixLen": 32,
+ },
+ "192.168.2.0/24": {
+ "addrPrefix": "192.168.2.0",
+ "prefixLen": 24,
+ },
+ },
+ "totalPrefixCounter": 2,
+ }
+
+ return topotest.json_cmp(output, expected)
+
+ test_func = functools.partial(check_bgp_advertised_routes, r2)
+ success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+ assert result is None, "AddPath TX not working."
+
+ step("Check if AddPath RX is disabled on r1 and we receive only 2 paths.")
+
+ def check_bgp_disabled_addpath_rx(router):
+ output = json.loads(router.vtysh_cmd("show bgp neighbor 192.168.1.2 json"))
+ expected = {
+ "192.168.1.2": {
+ "bgpState": "Established",
+ "neighborCapabilities": {
+ "addPath": {
+ "ipv4Unicast": {"txReceived": True, "rxReceived": True}
+ },
+ },
+ "addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}},
+ }
+ }
+
+ return topotest.json_cmp(output, expected)
+
+ test_func = functools.partial(check_bgp_disabled_addpath_rx, r1)
+ success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+ assert result is None, "AddPath RX advertised, but should not."
+
+
+if __name__ == "__main__":
+ args = ["-s"] + sys.argv[1:]
+ sys.exit(pytest.main(args))
projects / mirror_frr.git / commitdiff