blob: 5782433886fceaa434432a59f2a4cf46ed8bc3ce (
plain)
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
|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# L2TPv3 tunnel between 2 hosts
#
# host-1 | router | host-2
# | |
# lo l2tp | | l2tp lo
# 172.16.101.1 172.16.1.1 | | 172.16.1.2 172.16.101.2
# fc00:101::1 fc00:1::1 | | fc00:1::2 fc00:101::2
# | |
# eth0 | | eth0
# 10.1.1.1 | | 10.1.2.1
# 2001:db8:1::1 | | 2001:db8:2::1
VERBOSE=0
PAUSE_ON_FAIL=no
which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
################################################################################
#
log_test()
{
local rc=$1
local expected=$2
local msg="$3"
if [ ${rc} -eq ${expected} ]; then
printf "TEST: %-60s [ OK ]\n" "${msg}"
nsuccess=$((nsuccess+1))
else
ret=1
nfail=$((nfail+1))
printf "TEST: %-60s [FAIL]\n" "${msg}"
if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
echo
echo "hit enter to continue, 'q' to quit"
read a
[ "$a" = "q" ] && exit 1
fi
fi
}
run_cmd()
{
local ns
local cmd
local out
local rc
ns="$1"
shift
cmd="$*"
if [ "$VERBOSE" = "1" ]; then
printf " COMMAND: $cmd\n"
fi
out=$(eval ip netns exec ${ns} ${cmd} 2>&1)
rc=$?
if [ "$VERBOSE" = "1" -a -n "$out" ]; then
echo " $out"
fi
[ "$VERBOSE" = "1" ] && echo
return $rc
}
################################################################################
# create namespaces and interconnects
create_ns()
{
local ns=$1
local addr=$2
local addr6=$3
[ -z "${addr}" ] && addr="-"
[ -z "${addr6}" ] && addr6="-"
ip netns add ${ns}
ip -netns ${ns} link set lo up
if [ "${addr}" != "-" ]; then
ip -netns ${ns} addr add dev lo ${addr}
fi
if [ "${addr6}" != "-" ]; then
ip -netns ${ns} -6 addr add dev lo ${addr6}
fi
ip -netns ${ns} ro add unreachable default metric 8192
ip -netns ${ns} -6 ro add unreachable default metric 8192
ip netns exec ${ns} sysctl -qw net.ipv4.ip_forward=1
ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.forwarding=1
ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.forwarding=1
ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.accept_dad=0
}
# create veth pair to connect namespaces and apply addresses.
connect_ns()
{
local ns1=$1
local ns1_dev=$2
local ns1_addr=$3
local ns1_addr6=$4
local ns2=$5
local ns2_dev=$6
local ns2_addr=$7
local ns2_addr6=$8
ip -netns ${ns1} li add ${ns1_dev} type veth peer name tmp
ip -netns ${ns1} li set ${ns1_dev} up
ip -netns ${ns1} li set tmp netns ${ns2} name ${ns2_dev}
ip -netns ${ns2} li set ${ns2_dev} up
if [ "${ns1_addr}" != "-" ]; then
ip -netns ${ns1} addr add dev ${ns1_dev} ${ns1_addr}
ip -netns ${ns2} addr add dev ${ns2_dev} ${ns2_addr}
fi
if [ "${ns1_addr6}" != "-" ]; then
ip -netns ${ns1} addr add dev ${ns1_dev} ${ns1_addr6}
ip -netns ${ns2} addr add dev ${ns2_dev} ${ns2_addr6}
fi
}
################################################################################
# test setup
cleanup()
{
local ns
for ns in host-1 host-2 router
do
ip netns del ${ns} 2>/dev/null
done
}
setup_l2tp_ipv4()
{
#
# configure l2tpv3 tunnel on host-1
#
ip -netns host-1 l2tp add tunnel tunnel_id 1041 peer_tunnel_id 1042 \
encap ip local 10.1.1.1 remote 10.1.2.1
ip -netns host-1 l2tp add session name l2tp4 tunnel_id 1041 \
session_id 1041 peer_session_id 1042
ip -netns host-1 link set dev l2tp4 up
ip -netns host-1 addr add dev l2tp4 172.16.1.1 peer 172.16.1.2
#
# configure l2tpv3 tunnel on host-2
#
ip -netns host-2 l2tp add tunnel tunnel_id 1042 peer_tunnel_id 1041 \
encap ip local 10.1.2.1 remote 10.1.1.1
ip -netns host-2 l2tp add session name l2tp4 tunnel_id 1042 \
session_id 1042 peer_session_id 1041
ip -netns host-2 link set dev l2tp4 up
ip -netns host-2 addr add dev l2tp4 172.16.1.2 peer 172.16.1.1
#
# add routes to loopback addresses
#
ip -netns host-1 ro add 172.16.101.2/32 via 172.16.1.2
ip -netns host-2 ro add 172.16.101.1/32 via 172.16.1.1
}
setup_l2tp_ipv6()
{
#
# configure l2tpv3 tunnel on host-1
#
ip -netns host-1 l2tp add tunnel tunnel_id 1061 peer_tunnel_id 1062 \
encap ip local 2001:db8:1::1 remote 2001:db8:2::1
ip -netns host-1 l2tp add session name l2tp6 tunnel_id 1061 \
session_id 1061 peer_session_id 1062
ip -netns host-1 link set dev l2tp6 up
ip -netns host-1 addr add dev l2tp6 fc00:1::1 peer fc00:1::2
#
# configure l2tpv3 tunnel on host-2
#
ip -netns host-2 l2tp add tunnel tunnel_id 1062 peer_tunnel_id 1061 \
encap ip local 2001:db8:2::1 remote 2001:db8:1::1
ip -netns host-2 l2tp add session name l2tp6 tunnel_id 1062 \
session_id 1062 peer_session_id 1061
ip -netns host-2 link set dev l2tp6 up
ip -netns host-2 addr add dev l2tp6 fc00:1::2 peer fc00:1::1
#
# add routes to loopback addresses
#
ip -netns host-1 -6 ro add fc00:101::2/128 via fc00:1::2
ip -netns host-2 -6 ro add fc00:101::1/128 via fc00:1::1
}
setup()
{
# start clean
cleanup
set -e
create_ns host-1 172.16.101.1/32 fc00:101::1/128
create_ns host-2 172.16.101.2/32 fc00:101::2/128
create_ns router
connect_ns host-1 eth0 10.1.1.1/24 2001:db8:1::1/64 \
router eth1 10.1.1.2/24 2001:db8:1::2/64
connect_ns host-2 eth0 10.1.2.1/24 2001:db8:2::1/64 \
router eth2 10.1.2.2/24 2001:db8:2::2/64
ip -netns host-1 ro add 10.1.2.0/24 via 10.1.1.2
ip -netns host-1 -6 ro add 2001:db8:2::/64 via 2001:db8:1::2
ip -netns host-2 ro add 10.1.1.0/24 via 10.1.2.2
ip -netns host-2 -6 ro add 2001:db8:1::/64 via 2001:db8:2::2
setup_l2tp_ipv4
setup_l2tp_ipv6
set +e
}
setup_ipsec()
{
#
# IPv4
#
run_cmd host-1 ip xfrm policy add \
src 10.1.1.1 dst 10.1.2.1 dir out \
tmpl proto esp mode transport
run_cmd host-1 ip xfrm policy add \
src 10.1.2.1 dst 10.1.1.1 dir in \
tmpl proto esp mode transport
run_cmd host-2 ip xfrm policy add \
src 10.1.1.1 dst 10.1.2.1 dir in \
tmpl proto esp mode transport
run_cmd host-2 ip xfrm policy add \
src 10.1.2.1 dst 10.1.1.1 dir out \
tmpl proto esp mode transport
ip -netns host-1 xfrm state add \
src 10.1.1.1 dst 10.1.2.1 \
spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
ip -netns host-1 xfrm state add \
src 10.1.2.1 dst 10.1.1.1 \
spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
ip -netns host-2 xfrm state add \
src 10.1.1.1 dst 10.1.2.1 \
spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
ip -netns host-2 xfrm state add \
src 10.1.2.1 dst 10.1.1.1 \
spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
#
# IPV6
#
run_cmd host-1 ip -6 xfrm policy add \
src 2001:db8:1::1 dst 2001:db8:2::1 dir out \
tmpl proto esp mode transport
run_cmd host-1 ip -6 xfrm policy add \
src 2001:db8:2::1 dst 2001:db8:1::1 dir in \
tmpl proto esp mode transport
run_cmd host-2 ip -6 xfrm policy add \
src 2001:db8:1::1 dst 2001:db8:2::1 dir in \
tmpl proto esp mode transport
run_cmd host-2 ip -6 xfrm policy add \
src 2001:db8:2::1 dst 2001:db8:1::1 dir out \
tmpl proto esp mode transport
ip -netns host-1 -6 xfrm state add \
src 2001:db8:1::1 dst 2001:db8:2::1 \
spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
ip -netns host-1 -6 xfrm state add \
src 2001:db8:2::1 dst 2001:db8:1::1 \
spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
ip -netns host-2 -6 xfrm state add \
src 2001:db8:1::1 dst 2001:db8:2::1 \
spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
ip -netns host-2 -6 xfrm state add \
src 2001:db8:2::1 dst 2001:db8:1::1 \
spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \
0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport
}
teardown_ipsec()
{
run_cmd host-1 ip xfrm state flush
run_cmd host-1 ip xfrm policy flush
run_cmd host-2 ip xfrm state flush
run_cmd host-2 ip xfrm policy flush
}
################################################################################
# generate traffic through tunnel for various cases
run_ping()
{
local desc="$1"
run_cmd host-1 ping -c1 -w1 172.16.1.2
log_test $? 0 "IPv4 basic L2TP tunnel ${desc}"
run_cmd host-1 ping -c1 -w1 -I 172.16.101.1 172.16.101.2
log_test $? 0 "IPv4 route through L2TP tunnel ${desc}"
run_cmd host-1 ${ping6} -c1 -w1 fc00:1::2
log_test $? 0 "IPv6 basic L2TP tunnel ${desc}"
run_cmd host-1 ${ping6} -c1 -w1 -I fc00:101::1 fc00:101::2
log_test $? 0 "IPv6 route through L2TP tunnel ${desc}"
}
run_tests()
{
local desc
setup
run_ping
setup_ipsec
run_ping "- with IPsec"
run_cmd host-1 ping -c1 -w1 172.16.1.2
log_test $? 0 "IPv4 basic L2TP tunnel ${desc}"
run_cmd host-1 ping -c1 -w1 -I 172.16.101.1 172.16.101.2
log_test $? 0 "IPv4 route through L2TP tunnel ${desc}"
run_cmd host-1 ${ping6} -c1 -w1 fc00:1::2
log_test $? 0 "IPv6 basic L2TP tunnel - with IPsec"
run_cmd host-1 ${ping6} -c1 -w1 -I fc00:101::1 fc00:101::2
log_test $? 0 "IPv6 route through L2TP tunnel - with IPsec"
teardown_ipsec
run_ping "- after IPsec teardown"
}
################################################################################
# main
declare -i nfail=0
declare -i nsuccess=0
while getopts :pv o
do
case $o in
p) PAUSE_ON_FAIL=yes;;
v) VERBOSE=$(($VERBOSE + 1));;
*) exit 1;;
esac
done
run_tests
cleanup
printf "\nTests passed: %3d\n" ${nsuccess}
printf "Tests failed: %3d\n" ${nfail}
|
