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055f21c4 | 1 | #!/usr/bin/env python |
acddc0ed | 2 | # SPDX-License-Identifier: ISC |
055f21c4 IS |
3 | |
4 | # | |
5 | # Copyright (c) 2022 by VMware, Inc. ("VMware") | |
6 | # Used Copyright (c) 2018 by Network Device Education Foundation, | |
7 | # Inc. ("NetDEF") in this file. | |
8 | # | |
055f21c4 IS |
9 | |
10 | """ | |
11 | Test is indended for validating zebra NH resolution logic | |
12 | """ | |
13 | ||
14 | import os | |
15 | import sys | |
16 | import pytest | |
17 | ||
18 | from lib.common_config import ( | |
19 | start_topology, | |
20 | verify_rib, | |
21 | verify_ip_nht, | |
22 | step, | |
23 | create_static_routes, | |
24 | ) | |
25 | ||
26 | # pylint: disable=C0413 | |
27 | from lib import topotest | |
28 | from lib.topogen import Topogen, TopoRouter, get_topogen | |
29 | from lib.topolog import logger | |
30 | ||
31 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
32 | sys.path.append(os.path.join(CWD, "../")) | |
33 | ||
34 | pytestmark = [pytest.mark.sharpd] | |
35 | ||
36 | #GLOBAL VARIABLES | |
37 | NH1 = "2.2.2.32" | |
38 | ||
39 | def build_topo(tgen): | |
40 | tgen.add_router("r1") | |
41 | ||
42 | switch = tgen.add_switch("sw1") | |
43 | switch.add_link(tgen.gears["r1"]) | |
44 | ||
45 | def setup_module(mod): | |
46 | tgen = Topogen(build_topo, mod.__name__) | |
47 | tgen.start_topology() | |
48 | router_list = tgen.routers() | |
49 | for rname, router in tgen.routers().items(): | |
50 | router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))) | |
51 | router.load_config( | |
52 | TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname)) | |
53 | ) | |
54 | tgen.start_router() | |
55 | ||
56 | def teardown_module(_mod): | |
57 | tgen = get_topogen() | |
58 | tgen.stop_topology() | |
59 | ||
60 | def test_verify_zebra_nh_resolution(request): | |
61 | tgen = get_topogen() | |
62 | tc_name = request.node.name | |
63 | if tgen.routers_have_failure(): | |
64 | pytest.skip(tgen.errors) | |
65 | logger.info("Starting Zebra NH resolution testcase") | |
66 | r1 = tgen.gears["r1"] | |
67 | ||
68 | step("Configure static route") | |
69 | input_dict_1 = { | |
70 | "r1": { | |
71 | "static_routes": [ | |
72 | {"network": "2.2.2.0/24", "next_hop": "r1-eth0"} | |
73 | ] | |
74 | } | |
75 | } | |
76 | ||
77 | result = create_static_routes(tgen, input_dict_1) | |
78 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
79 | tc_name, result | |
80 | ) | |
81 | ||
82 | step("Verify static routes in RIB of R1") | |
83 | input_dict_2 = { | |
84 | "r1": { | |
85 | "static_routes": [ | |
86 | {"network": "2.2.2.0/24"} | |
87 | ] | |
88 | } | |
89 | } | |
90 | ||
91 | dut = "r1" | |
92 | result = verify_rib(tgen, "ipv4", dut, input_dict_2) | |
93 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
94 | tc_name, result) | |
95 | ||
96 | step("Set the connected flag on the NH tracking entry") | |
97 | r1.vtysh_cmd("sharp watch nexthop 2.2.2.32 connected") | |
98 | ||
99 | step("Verify that NH 2.2.2.32 gets resolved over static route") | |
100 | input_dict_nh = { | |
101 | "r1": { | |
102 | NH1: { | |
103 | "Address": "2.2.2.0/24", | |
104 | "resolvedVia": "static", | |
105 | "nexthops": {"nexthop1": {"Interfcae": "r1-eth0"}}, | |
106 | } | |
107 | } | |
108 | } | |
109 | result = verify_ip_nht(tgen, input_dict_nh) | |
110 | assert result is True, "Testcase {} : Failed \n" | |
111 | "Error: Nexthop is missing in RIB".format( | |
112 | tc_name, result) | |
113 | ||
114 | step("Add a .32/32 route with the NH as itself") | |
115 | r1.vtysh_cmd("sharp install routes 2.2.2.32 nexthop 2.2.2.32 1") | |
116 | ||
117 | step("Verify that the installation of .32/32 has no effect on the NHT") | |
118 | input_dict_nh = { | |
119 | "r1": { | |
120 | NH1: { | |
121 | "Address": "2.2.2.0/24", | |
122 | "resolvedVia": "static", | |
123 | "nexthops": {"nexthop1": {"Interface": "r1-eth0"}}, | |
124 | } | |
125 | } | |
126 | } | |
127 | result = verify_ip_nht(tgen, input_dict_nh) | |
128 | assert result is True, "Testcase {} : Failed \n" | |
129 | "Error: Nexthop became unresolved".format( | |
130 | tc_name, result) | |
131 | ||
132 | step("Add a .31/32 route with the NH as 2.2.2.32" | |
133 | "to verify the NH Resolution behaviour") | |
134 | r1.vtysh_cmd("sharp install routes 2.2.2.31 nexthop 2.2.2.32 1") | |
135 | ||
136 | step("Verify that NH 2.2.2.2/32 doesn't become unresolved") | |
137 | input_dict_nh = { | |
138 | "r1": { | |
139 | NH1: { | |
140 | "Address": "2.2.2.0/24", | |
141 | "resolvedVia": "static", | |
142 | "nexthops": {"nexthop1": {"Interface": "r1-eth0"}}, | |
143 | } | |
144 | } | |
145 | } | |
146 | result = verify_ip_nht(tgen, input_dict_nh) | |
147 | assert result is True, "Testcase {} : Failed \n" | |
148 | "Error: Nexthop became unresolved".format( | |
149 | tc_name, result) | |
150 | ||
151 | if __name__ == "__main__": | |
152 | args = ["-s"] + sys.argv[1:] | |
153 | sys.exit(pytest.main(args)) |