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[linux.git] / tools / testing / selftests / net / srv6_end_dt46_l3vpn_test.sh
1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # author: Andrea Mayer <[email protected]>
5 # author: Paolo Lungaroni <[email protected]>
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 source lib.sh
197
198 readonly LOCALSID_TABLE_ID=90
199 readonly IPv6_RT_NETWORK=fd00
200 readonly IPv6_HS_NETWORK=cafe
201 readonly IPv4_HS_NETWORK=10.0.0
202 readonly VPN_LOCATOR_SERVICE=fc00
203 PING_TIMEOUT_SEC=4
204
205 ret=0
206
207 PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
208
209 log_test()
210 {
211         local rc=$1
212         local expected=$2
213         local msg="$3"
214
215         if [ ${rc} -eq ${expected} ]; then
216                 nsuccess=$((nsuccess+1))
217                 printf "\n    TEST: %-60s  [ OK ]\n" "${msg}"
218         else
219                 ret=1
220                 nfail=$((nfail+1))
221                 printf "\n    TEST: %-60s  [FAIL]\n" "${msg}"
222                 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
223                         echo
224                         echo "hit enter to continue, 'q' to quit"
225                         read a
226                         [ "$a" = "q" ] && exit 1
227                 fi
228         fi
229 }
230
231 print_log_test_results()
232 {
233         if [ "$TESTS" != "none" ]; then
234                 printf "\nTests passed: %3d\n" ${nsuccess}
235                 printf "Tests failed: %3d\n"   ${nfail}
236         fi
237 }
238
239 log_section()
240 {
241         echo
242         echo "################################################################################"
243         echo "TEST SECTION: $*"
244         echo "################################################################################"
245 }
246
247 cleanup()
248 {
249         ip link del veth-rt-1 2>/dev/null || true
250         ip link del veth-rt-2 2>/dev/null || true
251
252         cleanup_all_ns
253 }
254
255 # Setup the basic networking for the routers
256 setup_rt_networking()
257 {
258         local id=$1
259         eval local nsname=\${rt_${id}}
260
261         ip link set veth-rt-${id} netns ${nsname}
262         ip -netns ${nsname} link set veth-rt-${id} name veth0
263
264         ip netns exec ${nsname} sysctl -wq net.ipv6.conf.all.accept_dad=0
265         ip netns exec ${nsname} sysctl -wq net.ipv6.conf.default.accept_dad=0
266
267         ip -netns ${nsname} addr add ${IPv6_RT_NETWORK}::${id}/64 dev veth0 nodad
268         ip -netns ${nsname} link set veth0 up
269         ip -netns ${nsname} link set lo up
270
271         ip netns exec ${nsname} sysctl -wq net.ipv4.ip_forward=1
272         ip netns exec ${nsname} sysctl -wq net.ipv6.conf.all.forwarding=1
273 }
274
275 setup_hs()
276 {
277         local hid=$1
278         local rid=$2
279         local tid=$3
280         eval local hsname=\${hs_t${tid}_${hid}}
281         eval local rtname=\${rt_${rid}}
282         local rtveth=veth-t${tid}
283
284         # set the networking for the host
285         ip netns exec ${hsname} sysctl -wq net.ipv6.conf.all.accept_dad=0
286         ip netns exec ${hsname} sysctl -wq net.ipv6.conf.default.accept_dad=0
287
288         # disable the rp_filter otherwise the kernel gets confused about how
289         # to route decap ipv4 packets.
290         ip netns exec ${rtname} sysctl -wq net.ipv4.conf.all.rp_filter=0
291         ip netns exec ${rtname} sysctl -wq net.ipv4.conf.default.rp_filter=0
292
293         ip -netns ${hsname} link add veth0 type veth peer name ${rtveth}
294         ip -netns ${hsname} link set ${rtveth} netns ${rtname}
295         ip -netns ${hsname} addr add ${IPv6_HS_NETWORK}::${hid}/64 dev veth0 nodad
296         ip -netns ${hsname} addr add ${IPv4_HS_NETWORK}.${hid}/24 dev veth0
297         ip -netns ${hsname} link set veth0 up
298         ip -netns ${hsname} link set lo up
299
300         # configure the VRF for the tenant X on the router which is directly
301         # connected to the source host.
302         ip -netns ${rtname} link add vrf-${tid} type vrf table ${tid}
303         ip -netns ${rtname} link set vrf-${tid} up
304
305         ip netns exec ${rtname} sysctl -wq net.ipv6.conf.all.accept_dad=0
306         ip netns exec ${rtname} sysctl -wq net.ipv6.conf.default.accept_dad=0
307
308         # enslave the veth-tX interface to the vrf-X in the access router
309         ip -netns ${rtname} link set ${rtveth} master vrf-${tid}
310         ip -netns ${rtname} addr add ${IPv6_HS_NETWORK}::254/64 dev ${rtveth} nodad
311         ip -netns ${rtname} addr add ${IPv4_HS_NETWORK}.254/24 dev ${rtveth}
312         ip -netns ${rtname} link set ${rtveth} up
313
314         ip netns exec ${rtname} sysctl -wq net.ipv6.conf.${rtveth}.proxy_ndp=1
315         ip netns exec ${rtname} sysctl -wq net.ipv4.conf.${rtveth}.proxy_arp=1
316
317         ip netns exec ${rtname} sh -c "echo 1 > /proc/sys/net/vrf/strict_mode"
318 }
319
320 setup_vpn_config()
321 {
322         local hssrc=$1
323         local rtsrc=$2
324         local hsdst=$3
325         local rtdst=$4
326         local tid=$5
327
328         eval local rtsrc_name=\${rt_${rtsrc}}
329         eval local rtdst_name=\${rt_${rtdst}}
330         local rtveth=veth-t${tid}
331         local vpn_sid=${VPN_LOCATOR_SERVICE}:${hssrc}${hsdst}:${tid}::6046
332
333         ip -netns ${rtsrc_name} -6 neigh add proxy ${IPv6_HS_NETWORK}::${hsdst} dev ${rtveth}
334
335         # set the encap route for encapsulating packets which arrive from the
336         # host hssrc and destined to the access router rtsrc.
337         ip -netns ${rtsrc_name} -6 route add ${IPv6_HS_NETWORK}::${hsdst}/128 vrf vrf-${tid} \
338                 encap seg6 mode encap segs ${vpn_sid} dev veth0
339         ip -netns ${rtsrc_name} -4 route add ${IPv4_HS_NETWORK}.${hsdst}/32 vrf vrf-${tid} \
340                 encap seg6 mode encap segs ${vpn_sid} dev veth0
341         ip -netns ${rtsrc_name} -6 route add ${vpn_sid}/128 vrf vrf-${tid} \
342                 via fd00::${rtdst} dev veth0
343
344         # set the decap route for decapsulating packets which arrive from
345         # the rtdst router and destined to the hsdst host.
346         ip -netns ${rtdst_name} -6 route add ${vpn_sid}/128 table ${LOCALSID_TABLE_ID} \
347                 encap seg6local action End.DT46 vrftable ${tid} dev vrf-${tid}
348
349         # all sids for VPNs start with a common locator which is fc00::/16.
350         # Routes for handling the SRv6 End.DT46 behavior instances are grouped
351         # together in the 'localsid' table.
352         #
353         # NOTE: added only once
354         if [ -z "$(ip -netns ${rtdst_name} -6 rule show | \
355             grep "to ${VPN_LOCATOR_SERVICE}::/16 lookup ${LOCALSID_TABLE_ID}")" ]; then
356                 ip -netns ${rtdst_name} -6 rule add \
357                         to ${VPN_LOCATOR_SERVICE}::/16 \
358                         lookup ${LOCALSID_TABLE_ID} prio 999
359         fi
360
361         # set default routes to unreachable for both ipv4 and ipv6
362         ip -netns ${rtsrc_name} -6 route add unreachable default metric 4278198272 \
363                 vrf vrf-${tid}
364
365         ip -netns ${rtsrc_name} -4 route add unreachable default metric 4278198272 \
366                 vrf vrf-${tid}
367 }
368
369 setup()
370 {
371         ip link add veth-rt-1 type veth peer name veth-rt-2
372         # setup the networking for router rt-1 and router rt-2
373         setup_ns rt_1 rt_2
374         setup_rt_networking 1
375         setup_rt_networking 2
376
377         # setup two hosts for the tenant 100.
378         #  - host hs-1 is directly connected to the router rt-1;
379         #  - host hs-2 is directly connected to the router rt-2.
380         setup_ns hs_t100_1 hs_t100_2
381         setup_hs 1 1 100  #args: host router tenant
382         setup_hs 2 2 100
383
384         # setup two hosts for the tenant 200
385         #  - host hs-3 is directly connected to the router rt-1;
386         #  - host hs-4 is directly connected to the router rt-2.
387         setup_ns hs_t200_3 hs_t200_4
388         setup_hs 3 1 200
389         setup_hs 4 2 200
390
391         # setup the IPv4/IPv6 L3 VPN which connects the host hs-t100-1 and host
392         # hs-t100-2 within the same tenant 100.
393         setup_vpn_config 1 1 2 2 100  #args: src_host src_router dst_host dst_router tenant
394         setup_vpn_config 2 2 1 1 100
395
396         # setup the IPv4/IPv6 L3 VPN which connects the host hs-t200-3 and host
397         # hs-t200-4 within the same tenant 200.
398         setup_vpn_config 3 1 4 2 200
399         setup_vpn_config 4 2 3 1 200
400 }
401
402 check_rt_connectivity()
403 {
404         local rtsrc=$1
405         local rtdst=$2
406         eval local nsname=\${rt_${rtsrc}}
407
408         ip netns exec ${nsname} ping -c 1 -W 1 ${IPv6_RT_NETWORK}::${rtdst} \
409                 >/dev/null 2>&1
410 }
411
412 check_and_log_rt_connectivity()
413 {
414         local rtsrc=$1
415         local rtdst=$2
416
417         check_rt_connectivity ${rtsrc} ${rtdst}
418         log_test $? 0 "Routers connectivity: rt-${rtsrc} -> rt-${rtdst}"
419 }
420
421 check_hs_ipv6_connectivity()
422 {
423         local hssrc=$1
424         local hsdst=$2
425         local tid=$3
426         eval local nsname=\${hs_t${tid}_${hssrc}}
427
428         ip netns exec ${nsname} ping -c 1 -W ${PING_TIMEOUT_SEC} \
429                 ${IPv6_HS_NETWORK}::${hsdst} >/dev/null 2>&1
430 }
431
432 check_hs_ipv4_connectivity()
433 {
434         local hssrc=$1
435         local hsdst=$2
436         local tid=$3
437         eval local nsname=\${hs_t${tid}_${hssrc}}
438
439         ip netns exec ${nsname} ping -c 1 -W ${PING_TIMEOUT_SEC} \
440                 ${IPv4_HS_NETWORK}.${hsdst} >/dev/null 2>&1
441 }
442
443 check_and_log_hs_connectivity()
444 {
445         local hssrc=$1
446         local hsdst=$2
447         local tid=$3
448
449         check_hs_ipv6_connectivity ${hssrc} ${hsdst} ${tid}
450         log_test $? 0 "IPv6 Hosts connectivity: hs-t${tid}-${hssrc} -> hs-t${tid}-${hsdst} (tenant ${tid})"
451
452         check_hs_ipv4_connectivity ${hssrc} ${hsdst} ${tid}
453         log_test $? 0 "IPv4 Hosts connectivity: hs-t${tid}-${hssrc} -> hs-t${tid}-${hsdst} (tenant ${tid})"
454
455 }
456
457 check_and_log_hs_isolation()
458 {
459         local hssrc=$1
460         local tidsrc=$2
461         local hsdst=$3
462         local tiddst=$4
463
464         check_hs_ipv6_connectivity ${hssrc} ${hsdst} ${tidsrc}
465         # NOTE: ping should fail
466         log_test $? 1 "IPv6 Hosts isolation: hs-t${tidsrc}-${hssrc} -X-> hs-t${tiddst}-${hsdst}"
467
468         check_hs_ipv4_connectivity ${hssrc} ${hsdst} ${tidsrc}
469         # NOTE: ping should fail
470         log_test $? 1 "IPv4 Hosts isolation: hs-t${tidsrc}-${hssrc} -X-> hs-t${tiddst}-${hsdst}"
471
472 }
473
474
475 check_and_log_hs2gw_connectivity()
476 {
477         local hssrc=$1
478         local tid=$2
479
480         check_hs_ipv6_connectivity ${hssrc} 254 ${tid}
481         log_test $? 0 "IPv6 Hosts connectivity: hs-t${tid}-${hssrc} -> gw (tenant ${tid})"
482
483         check_hs_ipv4_connectivity ${hssrc} 254 ${tid}
484         log_test $? 0 "IPv4 Hosts connectivity: hs-t${tid}-${hssrc} -> gw (tenant ${tid})"
485
486 }
487
488 router_tests()
489 {
490         log_section "IPv6 routers connectivity test"
491
492         check_and_log_rt_connectivity 1 2
493         check_and_log_rt_connectivity 2 1
494 }
495
496 host2gateway_tests()
497 {
498         log_section "IPv4/IPv6 connectivity test among hosts and gateway"
499
500         check_and_log_hs2gw_connectivity 1 100
501         check_and_log_hs2gw_connectivity 2 100
502
503         check_and_log_hs2gw_connectivity 3 200
504         check_and_log_hs2gw_connectivity 4 200
505 }
506
507 host_vpn_tests()
508 {
509         log_section "SRv6 VPN connectivity test among hosts in the same tenant"
510
511         check_and_log_hs_connectivity 1 2 100
512         check_and_log_hs_connectivity 2 1 100
513
514         check_and_log_hs_connectivity 3 4 200
515         check_and_log_hs_connectivity 4 3 200
516 }
517
518 host_vpn_isolation_tests()
519 {
520         local i
521         local j
522         local k
523         local tmp
524         local l1="1 2"
525         local l2="3 4"
526         local t1=100
527         local t2=200
528
529         log_section "SRv6 VPN isolation test among hosts in different tentants"
530
531         for k in 0 1; do
532                 for i in ${l1}; do
533                         for j in ${l2}; do
534                                 check_and_log_hs_isolation ${i} ${t1} ${j} ${t2}
535                         done
536                 done
537
538                 # let us test the reverse path
539                 tmp="${l1}"; l1="${l2}"; l2="${tmp}"
540                 tmp=${t1}; t1=${t2}; t2=${tmp}
541         done
542 }
543
544 if [ "$(id -u)" -ne 0 ];then
545         echo "SKIP: Need root privileges"
546         exit $ksft_skip
547 fi
548
549 if [ ! -x "$(command -v ip)" ]; then
550         echo "SKIP: Could not run test without ip tool"
551         exit $ksft_skip
552 fi
553
554 modprobe vrf &>/dev/null
555 if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
556         echo "SKIP: vrf sysctl does not exist"
557         exit $ksft_skip
558 fi
559
560 cleanup &>/dev/null
561
562 setup
563
564 router_tests
565 host2gateway_tests
566 host_vpn_tests
567 host_vpn_isolation_tests
568
569 print_log_test_results
570
571 cleanup &>/dev/null
572
573 exit ${ret}
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