1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# author: Andrea Mayer <andrea.mayer@uniroma2.it>
5# author: Paolo Lungaroni <paolo.lungaroni@uniroma2.it>
6
7# This test is designed for evaluating the new SRv6 End.DT46 Behavior used for
8# implementing IPv4/IPv6 L3 VPN use cases.
9#
10# The current SRv6 code in the Linux kernel only implements SRv6 End.DT4 and
11# End.DT6 Behaviors which can be used respectively to support IPv4-in-IPv6 and
12# IPv6-in-IPv6 VPNs. With End.DT4 and End.DT6 it is not possible to create a
13# single SRv6 VPN tunnel to carry both IPv4 and IPv6 traffic.
14# The SRv6 End.DT46 Behavior implementation is meant to support the
15# decapsulation of IPv4 and IPv6 traffic coming from a single SRv6 tunnel.
16# Therefore, the SRv6 End.DT46 Behavior in the Linux kernel greatly simplifies
17# the setup and operations of SRv6 VPNs.
18#
19# Hereafter a network diagram is shown, where two different tenants (named 100
20# and 200) offer IPv4/IPv6 L3 VPN services allowing hosts to communicate with
21# each other across an IPv6 network.
22#
23# Only hosts belonging to the same tenant (and to the same VPN) can communicate
24# with each other. Instead, the communication among hosts of different tenants
25# is forbidden.
26# In other words, hosts hs-t100-1 and hs-t100-2 are connected through the
27# IPv4/IPv6 L3 VPN of tenant 100 while hs-t200-3 and hs-t200-4 are connected
28# using the IPv4/IPv6 L3 VPN of tenant 200. Cross connection between tenant 100
29# and tenant 200 is forbidden and thus, for example, hs-t100-1 cannot reach
30# hs-t200-3 and vice versa.
31#
32# Routers rt-1 and rt-2 implement IPv4/IPv6 L3 VPN services leveraging the SRv6
33# architecture. The key components for such VPNs are: a) SRv6 Encap behavior,
34# b) SRv6 End.DT46 Behavior and c) VRF.
35#
36# To explain how an IPv4/IPv6 L3 VPN based on SRv6 works, let us briefly
37# consider an example where, within the same domain of tenant 100, the host
38# hs-t100-1 pings the host hs-t100-2.
39#
40# First of all, L2 reachability of the host hs-t100-2 is taken into account by
41# the router rt-1 which acts as a arp/ndp proxy.
42#
43# When the host hs-t100-1 sends an IPv6 or IPv4 packet destined to hs-t100-2,
44# the router rt-1 receives the packet on the internal veth-t100 interface. Such
45# interface is enslaved to the VRF vrf-100 whose associated table contains the
46# SRv6 Encap route for encapsulating any IPv6 or IPv4 packet in a IPv6 plus the
47# Segment Routing Header (SRH) packet. This packet is sent through the (IPv6)
48# core network up to the router rt-2 that receives it on veth0 interface.
49#
50# The rt-2 router uses the 'localsid' routing table to process incoming
51# IPv6+SRH packets which belong to the VPN of the tenant 100. For each of these
52# packets, the SRv6 End.DT46 Behavior removes the outer IPv6+SRH headers and
53# performs the lookup on the vrf-100 table using the destination address of
54# the decapsulated IPv6 or IPv4 packet. Afterwards, the packet is sent to the
55# host hs-t100-2 through the veth-t100 interface.
56#
57# The ping response follows the same processing but this time the roles of rt-1
58# and rt-2 are swapped.
59#
60# Of course, the IPv4/IPv6 L3 VPN for tenant 200 works exactly as the IPv4/IPv6
61# L3 VPN for tenant 100. In this case, only hosts hs-t200-3 and hs-t200-4 are
62# able to connect with each other.
63#
64#
65# +-------------------+                                   +-------------------+
66# |                   |                                   |                   |
67# |  hs-t100-1 netns  |                                   |  hs-t100-2 netns  |
68# |                   |                                   |                   |
69# |  +-------------+  |                                   |  +-------------+  |
70# |  |    veth0    |  |                                   |  |    veth0    |  |
71# |  |  cafe::1/64 |  |                                   |  |  cafe::2/64 |  |
72# |  | 10.0.0.1/24 |  |                                   |  | 10.0.0.2/24 |  |
73# |  +-------------+  |                                   |  +-------------+  |
74# |        .          |                                   |         .         |
75# +-------------------+                                   +-------------------+
76#          .                                                        .
77#          .                                                        .
78#          .                                                        .
79# +-----------------------------------+   +-----------------------------------+
80# |        .                          |   |                         .         |
81# | +---------------+                 |   |                 +---------------- |
82# | |   veth-t100   |                 |   |                 |   veth-t100   | |
83# | |  cafe::254/64 |                 |   |                 |  cafe::254/64 | |
84# | | 10.0.0.254/24 |    +----------+ |   | +----------+    | 10.0.0.254/24 | |
85# | +-------+-------+    | localsid | |   | | localsid |    +-------+-------- |
86# |         |            |   table  | |   | |   table  |            |         |
87# |    +----+----+       +----------+ |   | +----------+       +----+----+    |
88# |    | vrf-100 |                    |   |                    | vrf-100 |    |
89# |    +---------+     +------------+ |   | +------------+     +---------+    |
90# |                    |   veth0    | |   | |   veth0    |                    |
91# |                    | fd00::1/64 |.|...|.| fd00::2/64 |                    |
92# |    +---------+     +------------+ |   | +------------+     +---------+    |
93# |    | vrf-200 |                    |   |                    | vrf-200 |    |
94# |    +----+----+                    |   |                    +----+----+    |
95# |         |                         |   |                         |         |
96# | +-------+-------+                 |   |                 +-------+-------- |
97# | |   veth-t200   |                 |   |                 |   veth-t200   | |
98# | |  cafe::254/64 |                 |   |                 |  cafe::254/64 | |
99# | | 10.0.0.254/24 |                 |   |                 | 10.0.0.254/24 | |
100# | +---------------+      rt-1 netns |   | rt-2 netns      +---------------- |
101# |        .                          |   |                          .        |
102# +-----------------------------------+   +-----------------------------------+
103#          .                                                         .
104#          .                                                         .
105#          .                                                         .
106#          .                                                         .
107# +-------------------+                                   +-------------------+
108# |        .          |                                   |          .        |
109# |  +-------------+  |                                   |  +-------------+  |
110# |  |    veth0    |  |                                   |  |    veth0    |  |
111# |  |  cafe::3/64 |  |                                   |  |  cafe::4/64 |  |
112# |  | 10.0.0.3/24 |  |                                   |  | 10.0.0.4/24 |  |
113# |  +-------------+  |                                   |  +-------------+  |
114# |                   |                                   |                   |
115# |  hs-t200-3 netns  |                                   |  hs-t200-4 netns  |
116# |                   |                                   |                   |
117# +-------------------+                                   +-------------------+
118#
119#
120# ~~~~~~~~~~~~~~~~~~~~~~~~~
121# | Network configuration |
122# ~~~~~~~~~~~~~~~~~~~~~~~~~
123#
124# rt-1: localsid table (table 90)
125# +--------------------------------------------------+
126# |SID              |Action                          |
127# +--------------------------------------------------+
128# |fc00:21:100::6046|apply SRv6 End.DT46 vrftable 100|
129# +--------------------------------------------------+
130# |fc00:21:200::6046|apply SRv6 End.DT46 vrftable 200|
131# +--------------------------------------------------+
132#
133# rt-1: VRF tenant 100 (table 100)
134# +---------------------------------------------------+
135# |host       |Action                                 |
136# +---------------------------------------------------+
137# |cafe::2    |apply seg6 encap segs fc00:12:100::6046|
138# +---------------------------------------------------+
139# |cafe::/64  |forward to dev veth-t100               |
140# +---------------------------------------------------+
141# |10.0.0.2   |apply seg6 encap segs fc00:12:100::6046|
142# +---------------------------------------------------+
143# |10.0.0.0/24|forward to dev veth-t100               |
144# +---------------------------------------------------+
145#
146# rt-1: VRF tenant 200 (table 200)
147# +---------------------------------------------------+
148# |host       |Action                                 |
149# +---------------------------------------------------+
150# |cafe::4    |apply seg6 encap segs fc00:12:200::6046|
151# +---------------------------------------------------+
152# |cafe::/64  |forward to dev veth-t200               |
153# +---------------------------------------------------+
154# |10.0.0.4   |apply seg6 encap segs fc00:12:200::6046|
155# +---------------------------------------------------+
156# |10.0.0.0/24|forward to dev veth-t200               |
157# +---------------------------------------------------+
158#
159#
160# rt-2: localsid table (table 90)
161# +--------------------------------------------------+
162# |SID              |Action                          |
163# +--------------------------------------------------+
164# |fc00:12:100::6046|apply SRv6 End.DT46 vrftable 100|
165# +--------------------------------------------------+
166# |fc00:12:200::6046|apply SRv6 End.DT46 vrftable 200|
167# +--------------------------------------------------+
168#
169# rt-2: VRF tenant 100 (table 100)
170# +---------------------------------------------------+
171# |host       |Action                                 |
172# +---------------------------------------------------+
173# |cafe::1    |apply seg6 encap segs fc00:21:100::6046|
174# +---------------------------------------------------+
175# |cafe::/64  |forward to dev veth-t100               |
176# +---------------------------------------------------+
177# |10.0.0.1   |apply seg6 encap segs fc00:21:100::6046|
178# +---------------------------------------------------+
179# |10.0.0.0/24|forward to dev veth-t100               |
180# +---------------------------------------------------+
181#
182# rt-2: VRF tenant 200 (table 200)
183# +---------------------------------------------------+
184# |host       |Action                                 |
185# +---------------------------------------------------+
186# |cafe::3    |apply seg6 encap segs fc00:21:200::6046|
187# +---------------------------------------------------+
188# |cafe::/64  |forward to dev veth-t200               |
189# +---------------------------------------------------+
190# |10.0.0.3   |apply seg6 encap segs fc00:21:200::6046|
191# +---------------------------------------------------+
192# |10.0.0.0/24|forward to dev veth-t200               |
193# +---------------------------------------------------+
194#
195
196# Kselftest framework requirement - SKIP code is 4.
197ksft_skip=4
198
199readonly LOCALSID_TABLE_ID=90
200readonly IPv6_RT_NETWORK=fd00
201readonly IPv6_HS_NETWORK=cafe
202readonly IPv4_HS_NETWORK=10.0.0
203readonly VPN_LOCATOR_SERVICE=fc00
204PING_TIMEOUT_SEC=4
205
206ret=0
207
208PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
209
210log_test()
211{
212	local rc=$1
213	local expected=$2
214	local msg="$3"
215
216	if [ ${rc} -eq ${expected} ]; then
217		nsuccess=$((nsuccess+1))
218		printf "\n    TEST: %-60s  [ OK ]\n" "${msg}"
219	else
220		ret=1
221		nfail=$((nfail+1))
222		printf "\n    TEST: %-60s  [FAIL]\n" "${msg}"
223		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
224			echo
225			echo "hit enter to continue, 'q' to quit"
226			read a
227			[ "$a" = "q" ] && exit 1
228		fi
229	fi
230}
231
232print_log_test_results()
233{
234	if [ "$TESTS" != "none" ]; then
235		printf "\nTests passed: %3d\n" ${nsuccess}
236		printf "Tests failed: %3d\n"   ${nfail}
237	fi
238}
239
240log_section()
241{
242	echo
243	echo "################################################################################"
244	echo "TEST SECTION: $*"
245	echo "################################################################################"
246}
247
248cleanup()
249{
250	ip link del veth-rt-1 2>/dev/null || true
251	ip link del veth-rt-2 2>/dev/null || true
252
253	# destroy routers rt-* and hosts hs-*
254	for ns in $(ip netns show | grep -E 'rt-*|hs-*'); do
255		ip netns del ${ns} || true
256	done
257}
258
259# Setup the basic networking for the routers
260setup_rt_networking()
261{
262	local rt=$1
263	local nsname=rt-${rt}
264
265	ip netns add ${nsname}
266	ip link set veth-rt-${rt} netns ${nsname}
267	ip -netns ${nsname} link set veth-rt-${rt} name veth0
268
269	ip netns exec ${nsname} sysctl -wq net.ipv6.conf.all.accept_dad=0
270	ip netns exec ${nsname} sysctl -wq net.ipv6.conf.default.accept_dad=0
271
272	ip -netns ${nsname} addr add ${IPv6_RT_NETWORK}::${rt}/64 dev veth0 nodad
273	ip -netns ${nsname} link set veth0 up
274	ip -netns ${nsname} link set lo up
275
276	ip netns exec ${nsname} sysctl -wq net.ipv4.ip_forward=1
277	ip netns exec ${nsname} sysctl -wq net.ipv6.conf.all.forwarding=1
278}
279
280setup_hs()
281{
282	local hs=$1
283	local rt=$2
284	local tid=$3
285	local hsname=hs-t${tid}-${hs}
286	local rtname=rt-${rt}
287	local rtveth=veth-t${tid}
288
289	# set the networking for the host
290	ip netns add ${hsname}
291
292	ip netns exec ${hsname} sysctl -wq net.ipv6.conf.all.accept_dad=0
293	ip netns exec ${hsname} sysctl -wq net.ipv6.conf.default.accept_dad=0
294
295	# disable the rp_filter otherwise the kernel gets confused about how
296	# to route decap ipv4 packets.
297	ip netns exec ${rtname} sysctl -wq net.ipv4.conf.all.rp_filter=0
298	ip netns exec ${rtname} sysctl -wq net.ipv4.conf.default.rp_filter=0
299
300	ip -netns ${hsname} link add veth0 type veth peer name ${rtveth}
301	ip -netns ${hsname} link set ${rtveth} netns ${rtname}
302	ip -netns ${hsname} addr add ${IPv6_HS_NETWORK}::${hs}/64 dev veth0 nodad
303	ip -netns ${hsname} addr add ${IPv4_HS_NETWORK}.${hs}/24 dev veth0
304	ip -netns ${hsname} link set veth0 up
305	ip -netns ${hsname} link set lo up
306
307	# configure the VRF for the tenant X on the router which is directly
308	# connected to the source host.
309	ip -netns ${rtname} link add vrf-${tid} type vrf table ${tid}
310	ip -netns ${rtname} link set vrf-${tid} up
311
312	ip netns exec ${rtname} sysctl -wq net.ipv6.conf.all.accept_dad=0
313	ip netns exec ${rtname} sysctl -wq net.ipv6.conf.default.accept_dad=0
314
315	# enslave the veth-tX interface to the vrf-X in the access router
316	ip -netns ${rtname} link set ${rtveth} master vrf-${tid}
317	ip -netns ${rtname} addr add ${IPv6_HS_NETWORK}::254/64 dev ${rtveth} nodad
318	ip -netns ${rtname} addr add ${IPv4_HS_NETWORK}.254/24 dev ${rtveth}
319	ip -netns ${rtname} link set ${rtveth} up
320
321	ip netns exec ${rtname} sysctl -wq net.ipv6.conf.${rtveth}.proxy_ndp=1
322	ip netns exec ${rtname} sysctl -wq net.ipv4.conf.${rtveth}.proxy_arp=1
323
324	ip netns exec ${rtname} sh -c "echo 1 > /proc/sys/net/vrf/strict_mode"
325}
326
327setup_vpn_config()
328{
329	local hssrc=$1
330	local rtsrc=$2
331	local hsdst=$3
332	local rtdst=$4
333	local tid=$5
334
335	local hssrc_name=hs-t${tid}-${hssrc}
336	local hsdst_name=hs-t${tid}-${hsdst}
337	local rtsrc_name=rt-${rtsrc}
338	local rtdst_name=rt-${rtdst}
339	local rtveth=veth-t${tid}
340	local vpn_sid=${VPN_LOCATOR_SERVICE}:${hssrc}${hsdst}:${tid}::6046
341
342	ip -netns ${rtsrc_name} -6 neigh add proxy ${IPv6_HS_NETWORK}::${hsdst} dev ${rtveth}
343
344	# set the encap route for encapsulating packets which arrive from the
345	# host hssrc and destined to the access router rtsrc.
346	ip -netns ${rtsrc_name} -6 route add ${IPv6_HS_NETWORK}::${hsdst}/128 vrf vrf-${tid} \
347		encap seg6 mode encap segs ${vpn_sid} dev veth0
348	ip -netns ${rtsrc_name} -4 route add ${IPv4_HS_NETWORK}.${hsdst}/32 vrf vrf-${tid} \
349		encap seg6 mode encap segs ${vpn_sid} dev veth0
350	ip -netns ${rtsrc_name} -6 route add ${vpn_sid}/128 vrf vrf-${tid} \
351		via fd00::${rtdst} dev veth0
352
353	# set the decap route for decapsulating packets which arrive from
354	# the rtdst router and destined to the hsdst host.
355	ip -netns ${rtdst_name} -6 route add ${vpn_sid}/128 table ${LOCALSID_TABLE_ID} \
356		encap seg6local action End.DT46 vrftable ${tid} dev vrf-${tid}
357
358	# all sids for VPNs start with a common locator which is fc00::/16.
359	# Routes for handling the SRv6 End.DT46 behavior instances are grouped
360	# together in the 'localsid' table.
361	#
362	# NOTE: added only once
363	if [ -z "$(ip -netns ${rtdst_name} -6 rule show | \
364	    grep "to ${VPN_LOCATOR_SERVICE}::/16 lookup ${LOCALSID_TABLE_ID}")" ]; then
365		ip -netns ${rtdst_name} -6 rule add \
366			to ${VPN_LOCATOR_SERVICE}::/16 \
367			lookup ${LOCALSID_TABLE_ID} prio 999
368	fi
369
370	# set default routes to unreachable for both ipv4 and ipv6
371	ip -netns ${rtsrc_name} -6 route add unreachable default metric 4278198272 \
372		vrf vrf-${tid}
373
374	ip -netns ${rtsrc_name} -4 route add unreachable default metric 4278198272 \
375		vrf vrf-${tid}
376}
377
378setup()
379{
380	ip link add veth-rt-1 type veth peer name veth-rt-2
381	# setup the networking for router rt-1 and router rt-2
382	setup_rt_networking 1
383	setup_rt_networking 2
384
385	# setup two hosts for the tenant 100.
386	#  - host hs-1 is directly connected to the router rt-1;
387	#  - host hs-2 is directly connected to the router rt-2.
388	setup_hs 1 1 100  #args: host router tenant
389	setup_hs 2 2 100
390
391	# setup two hosts for the tenant 200
392	#  - host hs-3 is directly connected to the router rt-1;
393	#  - host hs-4 is directly connected to the router rt-2.
394	setup_hs 3 1 200
395	setup_hs 4 2 200
396
397	# setup the IPv4/IPv6 L3 VPN which connects the host hs-t100-1 and host
398	# hs-t100-2 within the same tenant 100.
399	setup_vpn_config 1 1 2 2 100  #args: src_host src_router dst_host dst_router tenant
400	setup_vpn_config 2 2 1 1 100
401
402	# setup the IPv4/IPv6 L3 VPN which connects the host hs-t200-3 and host
403	# hs-t200-4 within the same tenant 200.
404	setup_vpn_config 3 1 4 2 200
405	setup_vpn_config 4 2 3 1 200
406}
407
408check_rt_connectivity()
409{
410	local rtsrc=$1
411	local rtdst=$2
412
413	ip netns exec rt-${rtsrc} ping -c 1 -W 1 ${IPv6_RT_NETWORK}::${rtdst} \
414		>/dev/null 2>&1
415}
416
417check_and_log_rt_connectivity()
418{
419	local rtsrc=$1
420	local rtdst=$2
421
422	check_rt_connectivity ${rtsrc} ${rtdst}
423	log_test $? 0 "Routers connectivity: rt-${rtsrc} -> rt-${rtdst}"
424}
425
426check_hs_ipv6_connectivity()
427{
428	local hssrc=$1
429	local hsdst=$2
430	local tid=$3
431
432	ip netns exec hs-t${tid}-${hssrc} ping -c 1 -W ${PING_TIMEOUT_SEC} \
433		${IPv6_HS_NETWORK}::${hsdst} >/dev/null 2>&1
434}
435
436check_hs_ipv4_connectivity()
437{
438	local hssrc=$1
439	local hsdst=$2
440	local tid=$3
441
442	ip netns exec hs-t${tid}-${hssrc} ping -c 1 -W ${PING_TIMEOUT_SEC} \
443		${IPv4_HS_NETWORK}.${hsdst} >/dev/null 2>&1
444}
445
446check_and_log_hs_connectivity()
447{
448	local hssrc=$1
449	local hsdst=$2
450	local tid=$3
451
452	check_hs_ipv6_connectivity ${hssrc} ${hsdst} ${tid}
453	log_test $? 0 "IPv6 Hosts connectivity: hs-t${tid}-${hssrc} -> hs-t${tid}-${hsdst} (tenant ${tid})"
454
455	check_hs_ipv4_connectivity ${hssrc} ${hsdst} ${tid}
456	log_test $? 0 "IPv4 Hosts connectivity: hs-t${tid}-${hssrc} -> hs-t${tid}-${hsdst} (tenant ${tid})"
457
458}
459
460check_and_log_hs_isolation()
461{
462	local hssrc=$1
463	local tidsrc=$2
464	local hsdst=$3
465	local tiddst=$4
466
467	check_hs_ipv6_connectivity ${hssrc} ${hsdst} ${tidsrc}
468	# NOTE: ping should fail
469	log_test $? 1 "IPv6 Hosts isolation: hs-t${tidsrc}-${hssrc} -X-> hs-t${tiddst}-${hsdst}"
470
471	check_hs_ipv4_connectivity ${hssrc} ${hsdst} ${tidsrc}
472	# NOTE: ping should fail
473	log_test $? 1 "IPv4 Hosts isolation: hs-t${tidsrc}-${hssrc} -X-> hs-t${tiddst}-${hsdst}"
474
475}
476
477
478check_and_log_hs2gw_connectivity()
479{
480	local hssrc=$1
481	local tid=$2
482
483	check_hs_ipv6_connectivity ${hssrc} 254 ${tid}
484	log_test $? 0 "IPv6 Hosts connectivity: hs-t${tid}-${hssrc} -> gw (tenant ${tid})"
485
486	check_hs_ipv4_connectivity ${hssrc} 254 ${tid}
487	log_test $? 0 "IPv4 Hosts connectivity: hs-t${tid}-${hssrc} -> gw (tenant ${tid})"
488
489}
490
491router_tests()
492{
493	log_section "IPv6 routers connectivity test"
494
495	check_and_log_rt_connectivity 1 2
496	check_and_log_rt_connectivity 2 1
497}
498
499host2gateway_tests()
500{
501	log_section "IPv4/IPv6 connectivity test among hosts and gateway"
502
503	check_and_log_hs2gw_connectivity 1 100
504	check_and_log_hs2gw_connectivity 2 100
505
506	check_and_log_hs2gw_connectivity 3 200
507	check_and_log_hs2gw_connectivity 4 200
508}
509
510host_vpn_tests()
511{
512	log_section "SRv6 VPN connectivity test among hosts in the same tenant"
513
514	check_and_log_hs_connectivity 1 2 100
515	check_and_log_hs_connectivity 2 1 100
516
517	check_and_log_hs_connectivity 3 4 200
518	check_and_log_hs_connectivity 4 3 200
519}
520
521host_vpn_isolation_tests()
522{
523	local i
524	local j
525	local k
526	local tmp
527	local l1="1 2"
528	local l2="3 4"
529	local t1=100
530	local t2=200
531
532	log_section "SRv6 VPN isolation test among hosts in different tentants"
533
534	for k in 0 1; do
535		for i in ${l1}; do
536			for j in ${l2}; do
537				check_and_log_hs_isolation ${i} ${t1} ${j} ${t2}
538			done
539		done
540
541		# let us test the reverse path
542		tmp="${l1}"; l1="${l2}"; l2="${tmp}"
543		tmp=${t1}; t1=${t2}; t2=${tmp}
544	done
545}
546
547if [ "$(id -u)" -ne 0 ];then
548	echo "SKIP: Need root privileges"
549	exit $ksft_skip
550fi
551
552if [ ! -x "$(command -v ip)" ]; then
553	echo "SKIP: Could not run test without ip tool"
554	exit $ksft_skip
555fi
556
557modprobe vrf &>/dev/null
558if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
559        echo "SKIP: vrf sysctl does not exist"
560        exit $ksft_skip
561fi
562
563cleanup &>/dev/null
564
565setup
566
567router_tests
568host2gateway_tests
569host_vpn_tests
570host_vpn_isolation_tests
571
572print_log_test_results
573
574cleanup &>/dev/null
575
576exit ${ret}
577