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1 | #!/usr/bin/env python |
2 | ||
3 | # | |
4 | # Copyright (c) 2022 by VMware, Inc. ("VMware") | |
5 | # Used Copyright (c) 2018 by Network Device Education Foundation, | |
6 | # Inc. ("NetDEF") in this file. | |
7 | # | |
8 | # Permission to use, copy, modify, and/or distribute this software | |
9 | # for any purpose with or without fee is hereby granted, provided | |
10 | # that the above copyright notice and this permission notice appear | |
11 | # in all copies. | |
12 | # | |
13 | # THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES | |
14 | # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR | |
16 | # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY | |
17 | # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
18 | # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
19 | # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | # OF THIS SOFTWARE. | |
21 | # | |
22 | ||
23 | """ | |
24 | Test is indended for validating zebra NH resolution logic | |
25 | """ | |
26 | ||
27 | import os | |
28 | import sys | |
29 | import pytest | |
30 | ||
31 | from lib.common_config import ( | |
32 | start_topology, | |
33 | verify_rib, | |
34 | verify_ip_nht, | |
35 | step, | |
36 | create_static_routes, | |
37 | ) | |
38 | ||
39 | # pylint: disable=C0413 | |
40 | from lib import topotest | |
41 | from lib.topogen import Topogen, TopoRouter, get_topogen | |
42 | from lib.topolog import logger | |
43 | ||
44 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
45 | sys.path.append(os.path.join(CWD, "../")) | |
46 | ||
47 | pytestmark = [pytest.mark.sharpd] | |
48 | ||
49 | #GLOBAL VARIABLES | |
50 | NH1 = "2.2.2.32" | |
51 | ||
52 | def build_topo(tgen): | |
53 | tgen.add_router("r1") | |
54 | ||
55 | switch = tgen.add_switch("sw1") | |
56 | switch.add_link(tgen.gears["r1"]) | |
57 | ||
58 | def setup_module(mod): | |
59 | tgen = Topogen(build_topo, mod.__name__) | |
60 | tgen.start_topology() | |
61 | router_list = tgen.routers() | |
62 | for rname, router in tgen.routers().items(): | |
63 | router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))) | |
64 | router.load_config( | |
65 | TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname)) | |
66 | ) | |
67 | tgen.start_router() | |
68 | ||
69 | def teardown_module(_mod): | |
70 | tgen = get_topogen() | |
71 | tgen.stop_topology() | |
72 | ||
73 | def test_verify_zebra_nh_resolution(request): | |
74 | tgen = get_topogen() | |
75 | tc_name = request.node.name | |
76 | if tgen.routers_have_failure(): | |
77 | pytest.skip(tgen.errors) | |
78 | logger.info("Starting Zebra NH resolution testcase") | |
79 | r1 = tgen.gears["r1"] | |
80 | ||
81 | step("Configure static route") | |
82 | input_dict_1 = { | |
83 | "r1": { | |
84 | "static_routes": [ | |
85 | {"network": "2.2.2.0/24", "next_hop": "r1-eth0"} | |
86 | ] | |
87 | } | |
88 | } | |
89 | ||
90 | result = create_static_routes(tgen, input_dict_1) | |
91 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
92 | tc_name, result | |
93 | ) | |
94 | ||
95 | step("Verify static routes in RIB of R1") | |
96 | input_dict_2 = { | |
97 | "r1": { | |
98 | "static_routes": [ | |
99 | {"network": "2.2.2.0/24"} | |
100 | ] | |
101 | } | |
102 | } | |
103 | ||
104 | dut = "r1" | |
105 | result = verify_rib(tgen, "ipv4", dut, input_dict_2) | |
106 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
107 | tc_name, result) | |
108 | ||
109 | step("Set the connected flag on the NH tracking entry") | |
110 | r1.vtysh_cmd("sharp watch nexthop 2.2.2.32 connected") | |
111 | ||
112 | step("Verify that NH 2.2.2.32 gets resolved over static route") | |
113 | input_dict_nh = { | |
114 | "r1": { | |
115 | NH1: { | |
116 | "Address": "2.2.2.0/24", | |
117 | "resolvedVia": "static", | |
118 | "nexthops": {"nexthop1": {"Interfcae": "r1-eth0"}}, | |
119 | } | |
120 | } | |
121 | } | |
122 | result = verify_ip_nht(tgen, input_dict_nh) | |
123 | assert result is True, "Testcase {} : Failed \n" | |
124 | "Error: Nexthop is missing in RIB".format( | |
125 | tc_name, result) | |
126 | ||
127 | step("Add a .32/32 route with the NH as itself") | |
128 | r1.vtysh_cmd("sharp install routes 2.2.2.32 nexthop 2.2.2.32 1") | |
129 | ||
130 | step("Verify that the installation of .32/32 has no effect on the NHT") | |
131 | input_dict_nh = { | |
132 | "r1": { | |
133 | NH1: { | |
134 | "Address": "2.2.2.0/24", | |
135 | "resolvedVia": "static", | |
136 | "nexthops": {"nexthop1": {"Interface": "r1-eth0"}}, | |
137 | } | |
138 | } | |
139 | } | |
140 | result = verify_ip_nht(tgen, input_dict_nh) | |
141 | assert result is True, "Testcase {} : Failed \n" | |
142 | "Error: Nexthop became unresolved".format( | |
143 | tc_name, result) | |
144 | ||
145 | step("Add a .31/32 route with the NH as 2.2.2.32" | |
146 | "to verify the NH Resolution behaviour") | |
147 | r1.vtysh_cmd("sharp install routes 2.2.2.31 nexthop 2.2.2.32 1") | |
148 | ||
149 | step("Verify that NH 2.2.2.2/32 doesn't become unresolved") | |
150 | input_dict_nh = { | |
151 | "r1": { | |
152 | NH1: { | |
153 | "Address": "2.2.2.0/24", | |
154 | "resolvedVia": "static", | |
155 | "nexthops": {"nexthop1": {"Interface": "r1-eth0"}}, | |
156 | } | |
157 | } | |
158 | } | |
159 | result = verify_ip_nht(tgen, input_dict_nh) | |
160 | assert result is True, "Testcase {} : Failed \n" | |
161 | "Error: Nexthop became unresolved".format( | |
162 | tc_name, result) | |
163 | ||
164 | if __name__ == "__main__": | |
165 | args = ["-s"] + sys.argv[1:] | |
166 | sys.exit(pytest.main(args)) |