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1 | #!/usr/bin/env python |
2 | # | |
3 | # test_zebra_rib.py | |
4 | # | |
5 | # Copyright (c) 2019 by | |
6 | # Cumulus Networks, Inc | |
7 | # Donald Sharp | |
8 | # | |
9 | # Permission to use, copy, modify, and/or distribute this software | |
10 | # for any purpose with or without fee is hereby granted, provided | |
11 | # that the above copyright notice and this permission notice appear | |
12 | # in all copies. | |
13 | # | |
14 | # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES | |
15 | # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
16 | # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR | |
17 | # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY | |
18 | # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
19 | # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
20 | # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
21 | # OF THIS SOFTWARE. | |
22 | # | |
23 | ||
24 | """ | |
25 | test_zebra_rib.py: Test some basic zebra <-> kernel interactions | |
26 | """ | |
27 | ||
28 | import os | |
29 | import re | |
30 | import sys | |
31 | from functools import partial | |
32 | import pytest | |
33 | import json | |
34 | ||
35 | # Save the Current Working Directory to find configuration files. | |
36 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
787e7624 | 37 | sys.path.append(os.path.join(CWD, "../")) |
abd2a1ff DS |
38 | |
39 | # pylint: disable=C0413 | |
40 | # Import topogen and topotest helpers | |
41 | from lib import topotest | |
42 | from lib.topogen import Topogen, TopoRouter, get_topogen | |
43 | from lib.topolog import logger | |
fed16811 | 44 | from time import sleep |
abd2a1ff DS |
45 | |
46 | # Required to instantiate the topology builder class. | |
47 | from mininet.topo import Topo | |
48 | ||
787e7624 | 49 | |
abd2a1ff DS |
50 | class ZebraTopo(Topo): |
51 | "Test topology builder" | |
787e7624 | 52 | |
abd2a1ff DS |
53 | def build(self, *_args, **_opts): |
54 | "Build function" | |
55 | tgen = get_topogen(self) | |
56 | ||
787e7624 | 57 | tgen.add_router("r1") |
abd2a1ff DS |
58 | |
59 | # Create a empty network for router 1 | |
787e7624 | 60 | switch = tgen.add_switch("s1") |
61 | switch.add_link(tgen.gears["r1"]) | |
62 | switch.add_link(tgen.gears["r1"]) | |
63 | switch.add_link(tgen.gears["r1"]) | |
64 | switch.add_link(tgen.gears["r1"]) | |
65 | switch.add_link(tgen.gears["r1"]) | |
66 | switch.add_link(tgen.gears["r1"]) | |
67 | switch.add_link(tgen.gears["r1"]) | |
68 | switch.add_link(tgen.gears["r1"]) | |
69 | ||
abd2a1ff DS |
70 | |
71 | def setup_module(mod): | |
72 | "Sets up the pytest environment" | |
73 | tgen = Topogen(ZebraTopo, mod.__name__) | |
74 | tgen.start_topology() | |
75 | ||
76 | router_list = tgen.routers() | |
e5f0ed14 | 77 | for rname, router in router_list.items(): |
abd2a1ff | 78 | router.load_config( |
fed16811 DS |
79 | TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))) |
80 | router.load_config( | |
81 | TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname))) | |
abd2a1ff DS |
82 | |
83 | # Initialize all routers. | |
84 | tgen.start_router() | |
85 | ||
787e7624 | 86 | |
abd2a1ff DS |
87 | def teardown_module(mod): |
88 | "Teardown the pytest environment" | |
89 | tgen = get_topogen() | |
90 | tgen.stop_topology() | |
91 | ||
787e7624 | 92 | |
abd2a1ff DS |
93 | def test_zebra_kernel_admin_distance(): |
94 | "Test some basic kernel routes added that should be accepted" | |
95 | logger.info("Test some basic kernel routes that should be accepted") | |
96 | tgen = get_topogen() | |
97 | if tgen.routers_have_failure(): | |
787e7624 | 98 | pytest.skip("skipped because of router(s) failure") |
abd2a1ff | 99 | |
787e7624 | 100 | r1 = tgen.gears["r1"] |
abd2a1ff DS |
101 | |
102 | # Route with 255/8192 metric | |
787e7624 | 103 | r1.run("ip route add 4.5.1.0/24 via 192.168.210.2 dev r1-eth0 metric 4278198272") |
abd2a1ff | 104 | # Route with 1/1 metric |
787e7624 | 105 | r1.run("ip route add 4.5.2.0/24 via 192.168.211.2 dev r1-eth1 metric 16777217") |
abd2a1ff | 106 | # Route with 10/1 metric |
787e7624 | 107 | r1.run("ip route add 4.5.3.0/24 via 192.168.212.2 dev r1-eth2 metric 167772161") |
abd2a1ff | 108 | # Same route with a 160/1 metric |
787e7624 | 109 | r1.run("ip route add 4.5.3.0/24 via 192.168.213.2 dev r1-eth3 metric 2684354561") |
abd2a1ff | 110 | |
787e7624 | 111 | # Currently I believe we have a bug here with the same route and different |
112 | # metric. That needs to be properly resolved. Making a note for | |
113 | # coming back around later and fixing this. | |
114 | # tgen.mininet_cli() | |
abd2a1ff | 115 | for i in range(1, 2): |
787e7624 | 116 | json_file = "{}/r1/v4_route_{}.json".format(CWD, i) |
abd2a1ff DS |
117 | expected = json.loads(open(json_file).read()) |
118 | ||
787e7624 | 119 | test_func = partial( |
120 | topotest.router_json_cmp, | |
121 | r1, | |
122 | "show ip route 4.5.{}.0 json".format(i), | |
123 | expected, | |
124 | ) | |
125 | _, result = topotest.run_and_expect(test_func, None, count=2, wait=0.5) | |
abd2a1ff DS |
126 | assertmsg = '"r1" JSON output mismatches' |
127 | assert result is None, assertmsg | |
787e7624 | 128 | # tgen.mininet_cli() |
129 | ||
abd2a1ff DS |
130 | |
131 | def test_zebra_kernel_override(): | |
132 | "Test that a FRR route with a lower admin distance takes over" | |
133 | logger.info("Test kernel override with a better admin distance") | |
134 | tgen = get_topogen() | |
787e7624 | 135 | if tgen.routers_have_failure(): |
5094b56d | 136 | pytest.skip("skipped because of previous test failure") |
abd2a1ff | 137 | |
787e7624 | 138 | r1 = tgen.gears["r1"] |
abd2a1ff | 139 | r1.vtysh_cmd("conf\nip route 4.5.1.0/24 192.168.216.3") |
787e7624 | 140 | json_file = "{}/r1/v4_route_1_static_override.json".format(CWD) |
abd2a1ff DS |
141 | expected = json.loads(open(json_file).read()) |
142 | ||
787e7624 | 143 | test_func = partial( |
144 | topotest.router_json_cmp, r1, "show ip route 4.5.1.0 json", expected | |
145 | ) | |
146 | _, result = topotest.run_and_expect(test_func, None, count=2, wait=0.5) | |
abd2a1ff DS |
147 | assert result is None, '"r1" JSON output mismatches' |
148 | ||
787e7624 | 149 | logger.info( |
150 | "Test that the removal of the static route allows the kernel to take back over" | |
151 | ) | |
abd2a1ff | 152 | r1.vtysh_cmd("conf\nno ip route 4.5.1.0/24 192.168.216.3") |
787e7624 | 153 | json_file = "{}/r1/v4_route_1.json".format(CWD) |
abd2a1ff DS |
154 | expected = json.loads(open(json_file).read()) |
155 | ||
787e7624 | 156 | test_func = partial( |
157 | topotest.router_json_cmp, r1, "show ip route 4.5.1.0 json", expected | |
158 | ) | |
159 | _, result = topotest.run_and_expect(test_func, None, count=2, wait=0.5) | |
abd2a1ff DS |
160 | assert result is None, '"r1" JSON output mismatches' |
161 | ||
fed16811 DS |
162 | def test_route_map_usage(): |
163 | "Test that FRR only reruns over routes associated with the routemap" | |
164 | logger.info("Test that FRR runs on selected re's on route-map changes") | |
165 | tgen = get_topogen() | |
166 | if tgen.routers_have_failure(): | |
167 | pytest.skip("Skipped because of previous test failure") | |
168 | ||
169 | thisDir = os.path.dirname(os.path.realpath(__file__)) | |
170 | ||
171 | r1 = tgen.gears["r1"] | |
172 | # set the delay timer to 1 to improve test coverage (HA) | |
173 | r1.vtysh_cmd("conf\nzebra route-map delay-timer 1") | |
174 | r1.vtysh_cmd("conf\nroute-map static permit 10\nset src 192.168.215.1") | |
175 | r1.vtysh_cmd("conf\naccess-list 5 seq 5 permit 10.0.0.44/32") | |
176 | r1.vtysh_cmd("conf\naccess-list 10 seq 5 permit 10.0.1.0/24") | |
177 | r1.vtysh_cmd("conf\nroute-map sharp permit 10\nmatch ip address 10\nset src 192.168.214.1") | |
178 | r1.vtysh_cmd("conf\nroute-map sharp permit 20\nset src 192.168.213.1") | |
179 | r1.vtysh_cmd("conf\nip protocol static route-map static") | |
180 | r1.vtysh_cmd("conf\nip protocol sharp route-map sharp") | |
181 | sleep(4) | |
182 | r1.vtysh_cmd("conf\nip route 10.100.100.100/32 192.168.216.3") | |
183 | r1.vtysh_cmd("conf\nip route 10.100.100.101/32 10.0.0.44") | |
184 | r1.vtysh_cmd("sharp install route 10.0.0.0 nexthop 192.168.216.3 500") | |
185 | sleep(4) | |
186 | ||
187 | static_rmapfile = "%s/r1/static_rmap.ref" % (thisDir) | |
188 | expected = open(static_rmapfile).read().rstrip() | |
189 | expected = ('\n'.join(expected.splitlines()) + '\n').rstrip() | |
190 | actual = r1.vtysh_cmd("show route-map static") | |
191 | actual = ('\n'.join(actual.splitlines()) + '\n').rstrip() | |
192 | logger.info("Does the show route-map static command run the correct number of times") | |
193 | ||
194 | diff = topotest.get_textdiff(actual, expected, | |
195 | title1 = "Actual Route-map output", | |
196 | title2 = "Expected Route-map output") | |
197 | if diff: | |
198 | logger.info("Actual:") | |
199 | logger.info(actual) | |
200 | logger.info("Expected:") | |
201 | logger.info(expected) | |
202 | srun = r1.vtysh_cmd("show run") | |
203 | srun = ('\n'.join(srun.splitlines()) + '\n').rstrip() | |
204 | logger.info("Show run") | |
205 | logger.info(srun) | |
206 | assert 0, "r1 static route processing:\n" | |
207 | ||
208 | sharp_rmapfile = "%s/r1/sharp_rmap.ref" % (thisDir) | |
209 | expected = open(sharp_rmapfile).read().rstrip() | |
210 | expected = ('\n'.join(expected.splitlines()) + '\n').rstrip() | |
211 | actual = r1.vtysh_cmd("show route-map sharp") | |
212 | actual = ('\n'.join(actual.splitlines()) + '\n').rstrip() | |
213 | logger.info("Does the show route-map sharp command run the correct number of times") | |
214 | ||
215 | diff = topotest.get_textdiff(actual, expected, | |
216 | title1 = "Actual Route-map output", | |
217 | title2 = "Expected Route-map output") | |
218 | if diff: | |
219 | logger.info("Actual:") | |
220 | logger.info(actual) | |
221 | logger.info("Expected:") | |
222 | logger.info(expected) | |
223 | srun = r1.vtysh_cmd("show run") | |
224 | srun = ('\n'.join(srun.splitlines()) + '\n').rstrip() | |
225 | logger.info("Show run:") | |
226 | logger.info(srun) | |
227 | assert 0, "r1 sharp route-map processing:\n" | |
228 | ||
229 | logger.info("Add a extension to the static route-map to see the static route go away") | |
230 | r1.vtysh_cmd("conf\nroute-map sharp deny 5\nmatch ip address 5") | |
231 | sleep(2) | |
232 | # we are only checking the kernel here as that this will give us the implied | |
233 | # testing of both the route-map and staticd withdrawing the route | |
234 | # let's spot check that the routes were installed correctly | |
235 | # in the kernel | |
236 | logger.info("Test that the routes installed are correct") | |
237 | sharp_ipfile = "%s/r1/iproute.ref" % (thisDir) | |
238 | expected = open(sharp_ipfile).read().rstrip() | |
239 | expected = ('\n'.join(expected.splitlines()) + '\n').rstrip() | |
240 | actual = r1.run("ip route show") | |
241 | actual = ('\n'.join(actual.splitlines()) + '\n').rstrip() | |
242 | actual = re.sub(r" nhid [0-9][0-9]", "", actual) | |
243 | actual = re.sub(r" proto sharp", " proto XXXX", actual) | |
244 | actual = re.sub(r" proto static", " proto XXXX", actual) | |
245 | actual = re.sub(r" proto 194", " proto XXXX", actual) | |
246 | actual = re.sub(r" proto 196", " proto XXXX", actual) | |
247 | actual = re.sub(r" proto kernel", " proto XXXX", actual) | |
248 | actual = re.sub(r" proto 2", " proto XXXX", actual) | |
249 | # Some platforms have double spaces? Why?????? | |
250 | actual = re.sub(r" proto XXXX ", " proto XXXX ", actual) | |
251 | actual = re.sub(r" metric", " metric", actual) | |
252 | actual = re.sub(r" link ", " link ", actual) | |
253 | diff = topotest.get_textdiff(actual, expected, | |
254 | title1 = "Actual ip route show", | |
255 | title2 = "Expected ip route show") | |
256 | ||
257 | if diff: | |
258 | logger.info("Actual:") | |
259 | logger.info(actual) | |
260 | logger.info("Expected:") | |
261 | logger.info(expected) | |
262 | srun = r1.vtysh_cmd("show run") | |
263 | srun = ('\n'.join(srun.splitlines()) + '\n').rstrip() | |
264 | logger.info("Show run:") | |
265 | logger.info(srun) | |
266 | assert 0, "r1 ip route show is not correct:" | |
abd2a1ff DS |
267 | |
268 | def test_memory_leak(): | |
269 | "Run the memory leak test and report results." | |
270 | tgen = get_topogen() | |
271 | if not tgen.is_memleak_enabled(): | |
787e7624 | 272 | pytest.skip("Memory leak test/report is disabled") |
abd2a1ff DS |
273 | |
274 | tgen.report_memory_leaks() | |
275 | ||
787e7624 | 276 | |
277 | if __name__ == "__main__": | |
abd2a1ff DS |
278 | args = ["-s"] + sys.argv[1:] |
279 | sys.exit(pytest.main(args)) |