xref: /freebsd/tests/sys/netinet/arp.sh (revision b4bd97ec168e97360cf9511b975a20f677864661)
1 #!/usr/bin/env atf-sh
2 #-
3 # SPDX-License-Identifier: BSD-2-Clause
4 #
5 # Copyright (c) 2021 Alexander V. Chernikov
6 #
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
9 # are met:
10 # 1. Redistributions of source code must retain the above copyright
11 #    notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 #    notice, this list of conditions and the following disclaimer in the
14 #    documentation and/or other materials provided with the distribution.
15 #
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 # SUCH DAMAGE.
27 #
28 #
29 
30 . $(atf_get_srcdir)/../common/vnet.subr
31 
32 atf_test_case "arp_add_success" "cleanup"
33 arp_add_success_head() {
34 	atf_set descr 'Test static arp record addition'
35 	atf_set require.user root
36 }
37 
38 arp_add_success_body() {
39 
40 	vnet_init
41 
42 	jname="v4t-arp_add_success"
43 
44 	epair0=$(vnet_mkepair)
45 
46 	vnet_mkjail ${jname} ${epair0}a
47 
48 	jexec ${jname} ifconfig ${epair0}a inet 198.51.100.1/24
49 
50 	atf_check jexec ${jname} arp -s 198.51.100.2 90:10:00:01:02:03
51 
52 	atf_check -o match:"\? \(198.51.100.2\) at 90:10:00:01:02:03 on ${epair0}a permanent" jexec ${jname} arp -ni ${epair0}a 198.51.100.2
53 }
54 
55 arp_add_success_cleanup() {
56 	vnet_cleanup
57 }
58 
59 
60 atf_test_case "arp_del_success" "cleanup"
61 arp_del_success_head() {
62 	atf_set descr 'Test arp record deletion'
63 	atf_set require.user root
64 }
65 
66 arp_del_success_body() {
67 
68 	vnet_init
69 
70 	jname="v4t-arp_del_success"
71 
72 	epair0=$(vnet_mkepair)
73 
74 	vnet_mkjail ${jname} ${epair0}a
75 
76 	jexec ${jname} ifconfig ${epair0}a inet 198.51.100.1/24
77 
78 	jexec ${jname} ping -c1 -t1 198.51.100.2
79 
80 	atf_check -o match:"198.51.100.2 \(198.51.100.2\) deleted" jexec ${jname} arp -nd 198.51.100.2
81 	atf_check -s exit:1 -o match:"198.51.100.2 \(198.51.100.2\) -- no entry" jexec ${jname} arp -n 198.51.100.2
82 }
83 
84 arp_del_success_cleanup() {
85 	vnet_cleanup
86 }
87 
88 atf_test_case "pending_delete_if" "cleanup"
89 pending_delete_if_head() {
90 	atf_set descr 'Test having pending link layer lookups on interface delete'
91 	atf_set require.user root
92 }
93 
94 pending_delete_if_body() {
95 	vnet_init
96 
97 	jname="arp_pending_delete_if"
98 	epair=$(vnet_mkepair)
99 
100 	ifconfig ${epair}b up
101 
102 	vnet_mkjail ${jname} ${epair}a
103 	jexec ${jname} ifconfig ${epair}a 198.51.100.1/24
104 	for i in `seq 2 200`
105 	do
106 		jexec ${jname} ping 198.51.100.${i} &
107 	done
108 
109 	# Give the ping processes time to send their ARP requests
110 	sleep 1
111 
112 	jexec ${jname} arp -an
113 	jexec ${jname} killall ping
114 
115 	# Delete the interface. Test failure panics the machine.
116 	ifconfig ${epair}b destroy
117 }
118 
119 pending_delete_if_cleanup() {
120 	vnet_cleanup
121 }
122 
123 
124 atf_test_case "arp_lookup_host" "cleanup"
125 arp_lookup_host_head() {
126 	atf_set descr 'Test looking up a specific host'
127 	atf_set require.user root
128 }
129 
130 arp_lookup_host_body() {
131 
132 	vnet_init
133 
134 	jname="v4t-arp_lookup_host"
135 
136 	epair0=$(vnet_mkepair)
137 
138 	vnet_mkjail ${jname}a ${epair0}a
139 	vnet_mkjail ${jname}b ${epair0}b
140 
141 	ipa=198.51.100.1
142 	ipb=198.51.100.2
143 
144 	atf_check -o ignore \
145 		  ifconfig -j ${jname}a ${epair0}a inet ${ipa}/24
146 	atf_check -o ignore \
147 		  ifconfig -j ${jname}b ${epair0}b inet ${ipb}/24
148 
149 	# get jail b's MAC address
150 	eth="$(ifconfig -j ${jname}b ${epair0}b |
151 		sed -nE "s/^\tether ([0-9a-f:]*)$/\1/p")"
152 
153 	# no entry yet
154 	atf_check -s exit:1 -o match:"\(${ipb}\) -- no entry" \
155 		  jexec ${jname}a arp -n ${ipb}
156 
157 	# now ping jail b from jail a
158 	atf_check -o ignore \
159 		  jexec ${jname}a ping -c1 ${ipb}
160 
161 	# should be populated
162 	atf_check -o match:"\(${ipb}\) at $eth on ${epair0}a" \
163 		  jexec ${jname}a arp -n ${ipb}
164 
165 }
166 
167 arp_lookup_host_cleanup() {
168 	vnet_cleanup
169 }
170 
171 
172 atf_test_case "static" "cleanup"
173 static_head() {
174 	atf_set descr 'Test arp -s/-S works'
175 	atf_set require.user root
176 }
177 
178 static_body() {
179 
180 	vnet_init
181 
182 	jname="v4t-arp_static_host"
183 
184 	epair0=$(vnet_mkepair)
185 
186 	vnet_mkjail ${jname}a ${epair0}a
187 	vnet_mkjail ${jname}b ${epair0}b
188 
189 	ipa=198.51.100.1
190 	ipb=198.51.100.2
191 	max_age=$(sysctl -n net.link.ether.inet.max_age)
192 
193 	atf_check ifconfig -j ${jname}a ${epair0}a inet ${ipa}/24
194 	eth="$(ifconfig -j ${jname}b ${epair0}b |
195 		sed -nE "s/^\tether ([0-9a-f:]*)$/\1/p")"
196 
197 	# Expected outputs
198 	permanent=\
199 "? (${ipb}) at 00:00:00:00:00:00 on ${epair0}a permanent [ethernet]\n"
200 	temporary=\
201 "? (${ipb}) at ${eth} on ${epair0}a expires in ${max_age} seconds [ethernet]\n"
202 	deleted=\
203 "${ipb} (${ipb}) deleted\n"
204 
205 	# first check -s
206 	atf_check jexec ${jname}a arp -s ${ipb} 0:0:0:0:0:0
207 	# the jail B ifconfig will send gratuitous ARP that will trigger A
208 	atf_check ifconfig -j ${jname}b ${epair0}b inet ${ipb}/24
209 	atf_check -o "inline:${permanent}" jexec ${jname}a arp -n ${ipb}
210 	if [ $(sysctl -n net.link.ether.inet.log_arp_permanent_modify) -ne 0 ];
211 	then
212 		msg=$(dmesg | tail -n 1)
213 		atf_check_equal "${msg}" \
214 "arp: ${eth} attempts to modify permanent entry for ${ipb} on ${epair0}a"
215 	fi
216 
217 	# then check -S
218 	atf_check -o "inline:${deleted}" jexec ${jname}a arp -nd ${ipb}
219 	atf_check -o ignore jexec ${jname}b ping -c1 ${ipa}
220 	atf_check -o "inline:${temporary}" jexec ${jname}a arp -n ${ipb}
221 	# Note: this doesn't fail, tracked all the way down to FreeBSD 8
222 	# atf_check -s not-exit:0 jexec ${jname}a arp -s ${ipb} 0:0:0:0:0:0
223 	atf_check -o "inline:${deleted}" \
224 	    jexec ${jname}a arp -S ${ipb} 0:0:0:0:0:0
225 	atf_check -o "inline:${permanent}" jexec ${jname}a arp -n ${ipb}
226 }
227 
228 static_cleanup() {
229 	vnet_cleanup
230 }
231 
232 atf_test_case "garp" "cleanup"
233 garp_head() {
234 	atf_set descr 'Basic gratuitous arp test'
235 	atf_set require.user root
236 }
237 
238 garp_body() {
239 	vnet_init
240 
241 	j="v4t-garp"
242 
243 	epair=$(vnet_mkepair)
244 
245 	vnet_mkjail ${j} ${epair}a
246 	atf_check -s exit:0 -o ignore \
247 	    jexec ${j} sysctl net.link.ether.inet.garp_rexmit_count=3
248 	jexec ${j} ifconfig ${epair}a inet 192.0.2.1/24 up
249 
250 	# Allow some time for the timer to actually fire
251 	sleep 5
252 }
253 
254 garp_cleanup() {
255 	vnet_cleanup
256 }
257 
258 
259 atf_init_test_cases()
260 {
261 
262 	atf_add_test_case "arp_add_success"
263 	atf_add_test_case "arp_del_success"
264 	atf_add_test_case "pending_delete_if"
265 	atf_add_test_case "arp_lookup_host"
266 	atf_add_test_case "static"
267 	atf_add_test_case "garp"
268 }
269 
270 # end
271 
272