144 lines
4 KiB
Python
144 lines
4 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# Copyright (c) 2022 by VMware, Inc. ("VMware")
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# Used Copyright (c) 2018 by Network Device Education Foundation,
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# Inc. ("NetDEF") in this file.
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#
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"""
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Test is indended for validating zebra NH resolution logic
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"""
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import os
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import sys
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import pytest
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from lib.common_config import (
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verify_rib,
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verify_ip_nht,
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step,
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create_static_routes,
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)
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# pylint: disable=C0413
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.topolog import logger
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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pytestmark = [pytest.mark.sharpd]
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# GLOBAL VARIABLES
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NH1 = "2.2.2.32"
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def build_topo(tgen):
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tgen.add_router("r1")
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switch = tgen.add_switch("sw1")
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switch.add_link(tgen.gears["r1"])
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def setup_module(mod):
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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router_list = tgen.routers()
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for rname, router in tgen.routers().items():
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname))
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)
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tgen.start_router()
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def teardown_module(_mod):
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tgen = get_topogen()
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tgen.stop_topology()
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def test_verify_zebra_nh_resolution(request):
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tgen = get_topogen()
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tc_name = request.node.name
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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logger.info("Starting Zebra NH resolution testcase")
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r1 = tgen.gears["r1"]
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step("Configure static route")
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input_dict_1 = {
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"r1": {"static_routes": [{"network": "2.2.2.0/24", "next_hop": "r1-eth0"}]}
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}
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result = create_static_routes(tgen, input_dict_1)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step("Verify static routes in RIB of R1")
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input_dict_2 = {"r1": {"static_routes": [{"network": "2.2.2.0/24"}]}}
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dut = "r1"
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result = verify_rib(tgen, "ipv4", dut, input_dict_2)
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assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result)
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step("Set the connected flag on the NH tracking entry")
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r1.vtysh_cmd("sharp watch nexthop 2.2.2.32 connected")
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step("Verify that NH 2.2.2.32 gets resolved over static route")
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input_dict_nh = {
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"r1": {
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NH1: {
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"Address": "2.2.2.0/24",
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"resolvedVia": "static",
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"nexthops": {"nexthop1": {"Interfcae": "r1-eth0"}},
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}
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}
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}
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result = verify_ip_nht(tgen, input_dict_nh)
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assert result is True, "Testcase {} : Failed \n"
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"Error: Nexthop is missing in RIB".format(tc_name, result)
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step("Add a .32/32 route with the NH as itself")
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r1.vtysh_cmd("sharp install routes 2.2.2.32 nexthop 2.2.2.32 1")
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step("Verify that the installation of .32/32 has no effect on the NHT")
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input_dict_nh = {
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"r1": {
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NH1: {
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"Address": "2.2.2.0/24",
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"resolvedVia": "static",
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"nexthops": {"nexthop1": {"Interface": "r1-eth0"}},
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}
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}
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}
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result = verify_ip_nht(tgen, input_dict_nh)
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assert result is True, "Testcase {} : Failed \n"
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"Error: Nexthop became unresolved".format(tc_name, result)
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step(
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"Add a .31/32 route with the NH as 2.2.2.32"
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"to verify the NH Resolution behaviour"
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)
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r1.vtysh_cmd("sharp install routes 2.2.2.31 nexthop 2.2.2.32 1")
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step("Verify that NH 2.2.2.2/32 doesn't become unresolved")
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input_dict_nh = {
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"r1": {
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NH1: {
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"Address": "2.2.2.0/24",
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"resolvedVia": "static",
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"nexthops": {"nexthop1": {"Interface": "r1-eth0"}},
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}
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}
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}
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result = verify_ip_nht(tgen, input_dict_nh)
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assert result is True, "Testcase {} : Failed \n"
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"Error: Nexthop became unresolved".format(tc_name, result)
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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