diff options
Diffstat (limited to 'tests/topotests/bgp_dynamic_capability/test_bgp_dynamic_capability_addpath.py')
| -rw-r--r-- | tests/topotests/bgp_dynamic_capability/test_bgp_dynamic_capability_addpath.py | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/tests/topotests/bgp_dynamic_capability/test_bgp_dynamic_capability_addpath.py b/tests/topotests/bgp_dynamic_capability/test_bgp_dynamic_capability_addpath.py new file mode 100644 index 0000000..5202f51 --- /dev/null +++ b/tests/topotests/bgp_dynamic_capability/test_bgp_dynamic_capability_addpath.py @@ -0,0 +1,220 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC + +# Copyright (c) 2023 by +# Donatas Abraitis <donatas@opensourcerouting.org> +# + +""" +Test if Addpath capability is adjusted dynamically. +""" + +import os +import re +import sys +import json +import pytest +import functools + +pytestmark = pytest.mark.bgpd + +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 setup_module(mod): + topodef = {"s1": ("r1", "r2")} + tgen = Topogen(topodef, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + + for _, (rname, router) in enumerate(router_list.items(), 1): + router.load_frr_config(os.path.join(CWD, "{}/frr.conf".format(rname))) + + tgen.start_router() + + +def teardown_module(mod): + tgen = get_topogen() + tgen.stop_topology() + + +def test_bgp_dynamic_capability_addpath(): + tgen = get_topogen() + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + r1 = tgen.gears["r1"] + r2 = tgen.gears["r2"] + + def _bgp_converge(): + output = json.loads(r1.vtysh_cmd("show bgp neighbor json")) + expected = { + "192.168.1.2": { + "bgpState": "Established", + "neighborCapabilities": { + "dynamic": "advertisedAndReceived", + "addPath": { + "ipv4Unicast": { + "txAdvertised": True, + "rxAdvertisedAndReceived": True, + } + }, + }, + "addressFamilyInfo": { + "ipv4Unicast": { + "acceptedPrefixCounter": 3, + } + }, + } + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _bgp_converge, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Can't converge" + + step("Enable Addpath capability and check if it's exchanged dynamically") + + # Clear message stats to check if we receive a notification or not after we + # change the settings fo LLGR. + r1.vtysh_cmd("clear bgp 192.168.1.2 message-stats") + r2.vtysh_cmd( + """ + configure terminal + router bgp + address-family ipv4 unicast + neighbor 192.168.1.1 addpath-tx-all-paths + """ + ) + + def _bgp_check_if_addpath_rx_tx_and_session_not_reset(): + output = json.loads(r1.vtysh_cmd("show bgp neighbor json")) + expected = { + "192.168.1.2": { + "bgpState": "Established", + "neighborCapabilities": { + "dynamic": "advertisedAndReceived", + "addPath": { + "ipv4Unicast": { + "txAdvertisedAndReceived": True, + "rxAdvertisedAndReceived": True, + } + }, + }, + "addressFamilyInfo": { + "ipv4Unicast": { + "acceptedPrefixCounter": 3, + } + }, + "messageStats": { + "notificationsRecv": 0, + "capabilityRecv": 1, + }, + } + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _bgp_check_if_addpath_rx_tx_and_session_not_reset, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Session was reset after enabling Addpath capability" + + step("Disable Addpath capability RX and check if it's exchanged dynamically") + + # Clear message stats to check if we receive a notification or not after we + # disable addpath-rx. + r1.vtysh_cmd("clear bgp 192.168.1.2 message-stats") + r2.vtysh_cmd( + """ + configure terminal + router bgp + address-family ipv4 unicast + neighbor 192.168.1.1 disable-addpath-rx + """ + ) + + def _bgp_check_if_addpath_tx_and_session_not_reset(): + output = json.loads(r1.vtysh_cmd("show bgp neighbor json")) + expected = { + "192.168.1.2": { + "bgpState": "Established", + "neighborCapabilities": { + "dynamic": "advertisedAndReceived", + "addPath": { + "ipv4Unicast": { + "txAdvertisedAndReceived": True, + "rxAdvertised": True, + } + }, + }, + "messageStats": { + "notificationsRecv": 0, + "capabilityRecv": 1, + }, + } + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _bgp_check_if_addpath_tx_and_session_not_reset, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Session was reset after disabling Addpath RX flags" + + # Clear message stats to check if we receive a notification or not after we + # disable Addpath capability. + r1.vtysh_cmd("clear bgp 192.168.1.2 message-stats") + r1.vtysh_cmd( + """ + configure terminal + router bgp + address-family ipv4 unicast + no neighbor 192.168.1.2 addpath-tx-all-paths + """ + ) + + def _bgp_check_if_addpath_capability_is_absent(): + output = json.loads(r1.vtysh_cmd("show bgp neighbor json")) + expected = { + "192.168.1.2": { + "bgpState": "Established", + "neighborCapabilities": { + "dynamic": "advertisedAndReceived", + "addPath": { + "ipv4Unicast": { + "txAdvertisedAndReceived": None, + "txAdvertised": None, + "rxAdvertised": True, + } + }, + }, + "messageStats": { + "notificationsRecv": 0, + }, + } + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _bgp_check_if_addpath_capability_is_absent, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Failed to disable Addpath capability" + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |