1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
|
# $FreeBSD$
#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
. $(atf_get_srcdir)/utils.subr
. $(atf_get_srcdir)/runner.subr
pipe_head()
{
atf_set descr 'Basic pipe test'
atf_set require.user root
}
pipe_body()
{
fw=$1
firewall_init $fw
dummynet_init $fw
epair=$(vnet_mkepair)
vnet_mkjail alcatraz ${epair}b
ifconfig ${epair}a 192.0.2.1/24 up
jexec alcatraz ifconfig ${epair}b 192.0.2.2/24 up
# Sanity check
atf_check -s exit:0 -o ignore ping -i .1 -c 3 -s 1200 192.0.2.2
jexec alcatraz dnctl pipe 1 config bw 30Byte/s
firewall_config alcatraz ${fw} \
"ipfw" \
"ipfw add 1000 pipe 1 ip from any to any" \
"pf" \
"pass dnpipe 1"
# single ping succeeds just fine
atf_check -s exit:0 -o ignore ping -c 1 192.0.2.2
# Saturate the link
ping -i .1 -c 5 -s 1200 192.0.2.2
# We should now be hitting the limits and get this packet dropped.
atf_check -s exit:2 -o ignore ping -c 1 -s 1200 192.0.2.2
}
pipe_cleanup()
{
firewall_cleanup $1
}
pipe_v6_head()
{
atf_set descr 'Basic IPv6 pipe test'
atf_set require.user root
}
pipe_v6_body()
{
fw=$1
firewall_init $fw
dummynet_init $fw
epair=$(vnet_mkepair)
vnet_mkjail alcatraz ${epair}b
ifconfig ${epair}a inet6 2001:db8:42::1/64 up no_dad
jexec alcatraz ifconfig ${epair}b inet6 2001:db8:42::2/64 up no_dad
# Sanity check
atf_check -s exit:0 -o ignore ping6 -i .1 -c 3 -s 1200 2001:db8:42::2
jexec alcatraz dnctl pipe 1 config bw 100Byte/s
firewall_config alcatraz ${fw} \
"ipfw" \
"ipfw add 1000 pipe 1 ip6 from any to any" \
"pf" \
"pass dnpipe 1"
# Single ping succeeds
atf_check -s exit:0 -o ignore ping6 -c 1 2001:db8:42::2
# Saturate the link
ping6 -i .1 -c 5 -s 1200 2001:db8:42::2
# We should now be hitting the limit and get this packet dropped.
atf_check -s exit:2 -o ignore ping6 -c 1 -s 1200 2001:db8:42::2
}
pipe_v6_cleanup()
{
firewall_cleanup $1
}
queue_head()
{
atf_set descr 'Basic queue test'
atf_set require.user root
}
queue_body()
{
fw=$1
firewall_init $fw
dummynet_init $fw
epair=$(vnet_mkepair)
vnet_mkjail alcatraz ${epair}b
ifconfig ${epair}a 192.0.2.1/24 up
jexec alcatraz ifconfig ${epair}b 192.0.2.2/24 up
jexec alcatraz /usr/sbin/inetd -p inetd-alcatraz.pid \
$(atf_get_srcdir)/../pf/echo_inetd.conf
# Sanity check
atf_check -s exit:0 -o ignore ping -i .1 -c 3 -s 1200 192.0.2.2
reply=$(echo "foo" | nc -N 192.0.2.2 7)
if [ "$reply" != "foo" ];
then
atf_fail "Echo sanity check failed"
fi
jexec alcatraz dnctl pipe 1 config bw 1MByte/s
jexec alcatraz dnctl sched 1 config pipe 1 type wf2q+
jexec alcatraz dnctl queue 100 config sched 1 weight 99 mask all
jexec alcatraz dnctl queue 200 config sched 1 weight 1 mask all
firewall_config alcatraz ${fw} \
"ipfw" \
"ipfw add 1000 queue 100 tcp from 192.0.2.2 to any out" \
"ipfw add 1001 queue 200 icmp from 192.0.2.2 to any out" \
"ipfw add 1002 allow ip from any to any" \
"pf" \
"pass in proto tcp dnqueue (0, 100)" \
"pass in proto icmp dnqueue (0, 200)"
# Single ping succeeds
atf_check -s exit:0 -o ignore ping -c 1 192.0.2.2
# Unsaturated TCP succeeds
reply=$(echo "foo" | nc -w 5 -N 192.0.2.2 7)
if [ "$reply" != "foo" ];
then
atf_fail "Unsaturated echo failed"
fi
# Saturate the link
ping -f -s 1300 192.0.2.2 &
# Allow this to fill the queue
sleep 1
# TCP should still just pass
fails=0
for i in `seq 1 3`
do
result=$(dd if=/dev/zero bs=1024 count=2000 | timeout 3 nc -w 5 -N 192.0.2.2 7 | wc -c)
if [ $result -ne 2048000 ];
then
echo "Failed to prioritise TCP traffic. Got only $result bytes"
fails=$(( ${fails} + 1 ))
fi
done
if [ ${fails} -gt 0 ];
then
atf_fail "We failed prioritisation ${fails} times"
fi
# This will fail if we reverse the pola^W priority
firewall_config alcatraz ${fw} \
"ipfw" \
"ipfw add 1000 queue 200 tcp from 192.0.2.2 to any out" \
"ipfw add 1001 queue 100 icmp from 192.0.2.2 to any out" \
"ipfw add 1002 allow ip from any to any" \
"pf" \
"pass in proto tcp dnqueue (0, 200)" \
"pass in proto icmp dnqueue (0, 100)"
jexec alcatraz ping -f -s 1300 192.0.2.1 &
sleep 1
fails=0
for i in `seq 1 3`
do
result=$(dd if=/dev/zero bs=1024 count=2000 | timeout 3 nc -w 5 -N 192.0.2.2 7 | wc -c)
if [ $result -ne 2048000 ];
then
echo "Failed to prioritise TCP traffic. Got only $result bytes"
fails=$(( ${fails} + 1 ))
fi
done
if [ ${fails} -lt 3 ];
then
atf_fail "We failed reversed prioritisation only ${fails} times."
fi
}
queue_cleanup()
{
firewall_cleanup $1
}
queue_v6_head()
{
atf_set descr 'Basic queue test'
atf_set require.user root
}
queue_v6_body()
{
fw=$1
firewall_init $fw
dummynet_init $fw
epair=$(vnet_mkepair)
vnet_mkjail alcatraz ${epair}b
ifconfig ${epair}a inet6 2001:db8:42::1/64 no_dad up
jexec alcatraz ifconfig ${epair}b inet6 2001:db8:42::2 no_dad up
jexec alcatraz /usr/sbin/inetd -p inetd-alcatraz.pid \
$(atf_get_srcdir)/../pf/echo_inetd.conf
# Sanity check
atf_check -s exit:0 -o ignore ping6 -i .1 -c 3 -s 1200 2001:db8:42::2
reply=$(echo "foo" | nc -N 2001:db8:42::2 7)
if [ "$reply" != "foo" ];
then
atf_fail "Echo sanity check failed"
fi
jexec alcatraz dnctl pipe 1 config bw 1MByte/s
jexec alcatraz dnctl sched 1 config pipe 1 type wf2q+
jexec alcatraz dnctl queue 100 config sched 1 weight 99 mask all
jexec alcatraz dnctl queue 200 config sched 1 weight 1 mask all
firewall_config alcatraz ${fw} \
"ipfw" \
"ipfw add 1001 queue 100 tcp from 2001:db8:42::2 to any out" \
"ipfw add 1000 queue 200 ipv6-icmp from 2001:db8:42::2 to any out" \
"ipfw add 1002 allow ip6 from any to any" \
"pf" \
"pass in proto tcp dnqueue (0, 100)" \
"pass in proto icmp6 dnqueue (0, 200)"
# Single ping succeeds
atf_check -s exit:0 -o ignore ping6 -c 1 2001:db8:42::2
# Unsaturated TCP succeeds
reply=$(echo "foo" | nc -w 5 -N 2001:db8:42::2 7)
if [ "$reply" != "foo" ];
then
atf_fail "Unsaturated echo failed"
fi
# Saturate the link
ping6 -f -s 1200 2001:db8:42::2 &
# Allow this to fill the queue
sleep 1
# TCP should still just pass
fails=0
for i in `seq 1 3`
do
result=$(dd if=/dev/zero bs=1024 count=1000 | timeout 3 nc -w 5 -N 2001:db8:42::2 7 | wc -c)
if [ $result -ne 1024000 ];
then
echo "Failed to prioritise TCP traffic. Got only $result bytes"
fails=$(( ${fails} + 1 ))
fi
done
if [ ${fails} -gt 0 ];
then
atf_fail "We failed prioritisation ${fails} times"
fi
# What happens if we prioritise ICMP over TCP?
firewall_config alcatraz ${fw} \
"ipfw" \
"ipfw add 1001 queue 200 tcp from 2001:db8:42::2 to any out" \
"ipfw add 1000 queue 100 ipv6-icmp from 2001:db8:42::2 to any out" \
"ipfw add 1002 allow ip6 from any to any" \
"pf" \
"pass in proto tcp dnqueue (0, 200)" \
"pass in proto icmp6 dnqueue (0, 100)"
fails=0
for i in `seq 1 3`
do
result=$(dd if=/dev/zero bs=1024 count=1000 | timeout 3 nc -w 5 -N 2001:db8:42::2 7 | wc -c)
if [ $result -ne 1024000 ];
then
echo "Failed to prioritise TCP traffic. Got only $result bytes"
fails=$(( ${fails} + 1 ))
fi
done
if [ ${fails} -lt 3 ];
then
atf_fail "We failed reversed prioritisation only ${fails} times."
fi
}
queue_v6_cleanup()
{
firewall_cleanup $1
}
nat_head()
{
atf_set descr 'Basic dummynet + NAT test'
atf_set require.user root
}
nat_body()
{
fw=$1
firewall_init $fw
dummynet_init $fw
nat_init $fw
epair=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
ifconfig ${epair}a 192.0.2.2/24 up
route add -net 198.51.100.0/24 192.0.2.1
vnet_mkjail gw ${epair}b ${epair_two}a
jexec gw ifconfig ${epair}b 192.0.2.1/24 up
jexec gw ifconfig ${epair_two}a 198.51.100.1/24 up
jexec gw sysctl net.inet.ip.forwarding=1
vnet_mkjail srv ${epair_two}b
jexec srv ifconfig ${epair_two}b 198.51.100.2/24 up
jexec gw dnctl pipe 1 config bw 300Byte/s
firewall_config gw $fw \
"pf" \
"nat on ${epair_two}a inet from 192.0.2.0/24 to any -> (${epair_two}a)" \
"pass dnpipe 1"
# We've deliberately not set a route to 192.0.2.0/24 on srv, so the
# only way it can respond to this is if NAT is applied correctly.
atf_check -s exit:0 -o ignore ping -c 1 198.51.100.2
}
nat_cleanup()
{
firewall_cleanup $1
}
setup_tests \
pipe \
ipfw \
pf \
pipe_v6 \
ipfw \
pf \
queue \
ipfw \
pf \
queue_v6 \
ipfw \
pf \
nat \
pf
|
