1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0+
3 #
4 # Author: Justin Iurman <justin.iurman@uliege.be>
5 #
6 # This script evaluates the IOAM insertion for IPv6 by checking the IOAM data
7 # consistency directly inside packets on the receiver side. Tests are divided
8 # into three categories: OUTPUT (evaluates the IOAM processing by the sender),
9 # INPUT (evaluates the IOAM processing by a receiver) and GLOBAL (evaluates
10 # wider use cases that do not fall into the other two categories). Both OUTPUT
11 # and INPUT tests only use a two-node topology (alpha and beta), while GLOBAL
12 # tests use the entire three-node topology (alpha, beta, gamma). Each test is
13 # documented inside its own handler in the code below.
14 #
15 # An IOAM domain is configured from Alpha to Gamma but not on the reverse path.
16 # When either Beta or Gamma is the destination (depending on the test category),
17 # Alpha adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop.
18 #
19 #
20 # +-------------------+ +-------------------+
21 # | | | |
22 # | Alpha netns | | Gamma netns |
23 # | | | |
24 # | +-------------+ | | +-------------+ |
25 # | | veth0 | | | | veth0 | |
26 # | | db01::2/64 | | | | db02::2/64 | |
27 # | +-------------+ | | +-------------+ |
28 # | . | | . |
29 # +-------------------+ +-------------------+
30 # . .
31 # . .
32 # . .
33 # +----------------------------------------------------+
34 # | . . |
35 # | +-------------+ +-------------+ |
36 # | | veth0 | | veth1 | |
37 # | | db01::1/64 | ................ | db02::1/64 | |
38 # | +-------------+ +-------------+ |
39 # | |
40 # | Beta netns |
41 # | |
42 # +----------------------------------------------------+
43 #
44 #
45 #
46 # =============================================================
47 # | Alpha - IOAM configuration |
48 # +===========================================================+
49 # | Node ID | 1 |
50 # +-----------------------------------------------------------+
51 # | Node Wide ID | 11111111 |
52 # +-----------------------------------------------------------+
53 # | Ingress ID | 0xffff (default value) |
54 # +-----------------------------------------------------------+
55 # | Ingress Wide ID | 0xffffffff (default value) |
56 # +-----------------------------------------------------------+
57 # | Egress ID | 101 |
58 # +-----------------------------------------------------------+
59 # | Egress Wide ID | 101101 |
60 # +-----------------------------------------------------------+
61 # | Namespace Data | 0xdeadbee0 |
62 # +-----------------------------------------------------------+
63 # | Namespace Wide Data | 0xcafec0caf00dc0de |
64 # +-----------------------------------------------------------+
65 # | Schema ID | 777 |
66 # +-----------------------------------------------------------+
67 # | Schema Data | something that will be 4n-aligned |
68 # +-----------------------------------------------------------+
69 #
70 #
71 # =============================================================
72 # | Beta - IOAM configuration |
73 # +===========================================================+
74 # | Node ID | 2 |
75 # +-----------------------------------------------------------+
76 # | Node Wide ID | 22222222 |
77 # +-----------------------------------------------------------+
78 # | Ingress ID | 201 |
79 # +-----------------------------------------------------------+
80 # | Ingress Wide ID | 201201 |
81 # +-----------------------------------------------------------+
82 # | Egress ID | 202 |
83 # +-----------------------------------------------------------+
84 # | Egress Wide ID | 202202 |
85 # +-----------------------------------------------------------+
86 # | Namespace Data | 0xdeadbee1 |
87 # +-----------------------------------------------------------+
88 # | Namespace Wide Data | 0xcafec0caf11dc0de |
89 # +-----------------------------------------------------------+
90 # | Schema ID | 666 |
91 # +-----------------------------------------------------------+
92 # | Schema Data | Hello there -Obi |
93 # +-----------------------------------------------------------+
94 #
95 #
96 # =============================================================
97 # | Gamma - IOAM configuration |
98 # +===========================================================+
99 # | Node ID | 3 |
100 # +-----------------------------------------------------------+
101 # | Node Wide ID | 33333333 |
102 # +-----------------------------------------------------------+
103 # | Ingress ID | 301 |
104 # +-----------------------------------------------------------+
105 # | Ingress Wide ID | 301301 |
106 # +-----------------------------------------------------------+
107 # | Egress ID | 0xffff (default value) |
108 # +-----------------------------------------------------------+
109 # | Egress Wide ID | 0xffffffff (default value) |
110 # +-----------------------------------------------------------+
111 # | Namespace Data | 0xdeadbee2 |
112 # +-----------------------------------------------------------+
113 # | Namespace Wide Data | 0xcafec0caf22dc0de |
114 # +-----------------------------------------------------------+
115 # | Schema ID | 0xffffff (= None) |
116 # +-----------------------------------------------------------+
117 # | Schema Data | |
118 # +-----------------------------------------------------------+
119
120 source lib.sh
121
122 ################################################################################
123 # #
124 # WARNING: Be careful if you modify the block below - it MUST be kept #
125 # synchronized with configurations inside ioam6_parser.c and always #
126 # reflect the same. #
127 # #
128 ################################################################################
129
130 ALPHA=(
131 1 # ID
132 11111111 # Wide ID
133 0xffff # Ingress ID
134 0xffffffff # Ingress Wide ID
135 101 # Egress ID
136 101101 # Egress Wide ID
137 0xdeadbee0 # Namespace Data
138 0xcafec0caf00dc0de # Namespace Wide Data
139 777 # Schema ID (0xffffff = None)
140 "something that will be 4n-aligned" # Schema Data
141 )
142
143 BETA=(
144 2
145 22222222
146 201
147 201201
148 202
149 202202
150 0xdeadbee1
151 0xcafec0caf11dc0de
152 666
153 "Hello there -Obi"
154 )
155
156 GAMMA=(
157 3
158 33333333
159 301
160 301301
161 0xffff
162 0xffffffff
163 0xdeadbee2
164 0xcafec0caf22dc0de
165 0xffffff
166 ""
167 )
168
169 TESTS_OUTPUT="
170 out_undef_ns
171 out_no_room
172 out_bits
173 out_full_supp_trace
174 "
175
176 TESTS_INPUT="
177 in_undef_ns
178 in_no_room
179 in_oflag
180 in_bits
181 in_full_supp_trace
182 "
183
184 TESTS_GLOBAL="
185 fwd_full_supp_trace
186 "
187
188
189 ################################################################################
190 # #
191 # LIBRARY #
192 # #
193 ################################################################################
194
195 check_kernel_compatibility()
196 {
197 setup_ns ioam_tmp_node
198 ip link add name veth0 netns $ioam_tmp_node type veth \
199 peer name veth1 netns $ioam_tmp_node
200
201 ip -netns $ioam_tmp_node link set veth0 up
202 ip -netns $ioam_tmp_node link set veth1 up
203
204 ip -netns $ioam_tmp_node ioam namespace add 0
205 ns_ad=$?
206
207 ip -netns $ioam_tmp_node ioam namespace show | grep -q "namespace 0"
208 ns_sh=$?
209
210 if [[ $ns_ad != 0 || $ns_sh != 0 ]]
211 then
212 echo "SKIP: kernel version probably too old, missing ioam support"
213 ip link del veth0 2>/dev/null || true
214 cleanup_ns $ioam_tmp_node || true
215 exit $ksft_skip
216 fi
217
218 ip -netns $ioam_tmp_node route add db02::/64 encap ioam6 mode inline \
219 trace prealloc type 0x800000 ns 0 size 4 dev veth0
220 tr_ad=$?
221
222 ip -netns $ioam_tmp_node -6 route | grep -q "encap ioam6"
223 tr_sh=$?
224
225 if [[ $tr_ad != 0 || $tr_sh != 0 ]]
226 then
227 echo "SKIP: cannot attach an ioam trace to a route, did you compile" \
228 "without CONFIG_IPV6_IOAM6_LWTUNNEL?"
229 ip link del veth0 2>/dev/null || true
230 cleanup_ns $ioam_tmp_node || true
231 exit $ksft_skip
232 fi
233
234 ip link del veth0 2>/dev/null || true
235 cleanup_ns $ioam_tmp_node || true
236
237 lsmod | grep -q "ip6_tunnel"
238 ip6tnl_loaded=$?
239
240 if [ $ip6tnl_loaded = 0 ]
241 then
242 encap_tests=0
243 else
244 modprobe ip6_tunnel &>/dev/null
245 lsmod | grep -q "ip6_tunnel"
246 encap_tests=$?
247
248 if [ $encap_tests != 0 ]
249 then
250 ip a | grep -q "ip6tnl0"
251 encap_tests=$?
252
253 if [ $encap_tests != 0 ]
254 then
255 echo "Note: ip6_tunnel not found neither as a module nor inside the" \
256 "kernel, tests that require it (encap mode) will be omitted"
257 fi
258 fi
259 fi
260 }
261
262 cleanup()
263 {
264 ip link del ioam-veth-alpha 2>/dev/null || true
265 ip link del ioam-veth-gamma 2>/dev/null || true
266
267 cleanup_ns $ioam_node_alpha $ioam_node_beta $ioam_node_gamma || true
268
269 if [ $ip6tnl_loaded != 0 ]
270 then
271 modprobe -r ip6_tunnel 2>/dev/null || true
272 fi
273 }
274
275 setup()
276 {
277 setup_ns ioam_node_alpha ioam_node_beta ioam_node_gamma
278
279 ip link add name ioam-veth-alpha netns $ioam_node_alpha type veth \
280 peer name ioam-veth-betaL netns $ioam_node_beta
281 ip link add name ioam-veth-betaR netns $ioam_node_beta type veth \
282 peer name ioam-veth-gamma netns $ioam_node_gamma
283
284 ip -netns $ioam_node_alpha link set ioam-veth-alpha name veth0
285 ip -netns $ioam_node_beta link set ioam-veth-betaL name veth0
286 ip -netns $ioam_node_beta link set ioam-veth-betaR name veth1
287 ip -netns $ioam_node_gamma link set ioam-veth-gamma name veth0
288
289 ip -netns $ioam_node_alpha addr add db01::2/64 dev veth0
290 ip -netns $ioam_node_alpha link set veth0 up
291 ip -netns $ioam_node_alpha link set lo up
292 ip -netns $ioam_node_alpha route add db02::/64 via db01::1 dev veth0
293 ip -netns $ioam_node_alpha route del db01::/64
294 ip -netns $ioam_node_alpha route add db01::/64 dev veth0
295
296 ip -netns $ioam_node_beta addr add db01::1/64 dev veth0
297 ip -netns $ioam_node_beta addr add db02::1/64 dev veth1
298 ip -netns $ioam_node_beta link set veth0 up
299 ip -netns $ioam_node_beta link set veth1 up
300 ip -netns $ioam_node_beta link set lo up
301
302 ip -netns $ioam_node_gamma addr add db02::2/64 dev veth0
303 ip -netns $ioam_node_gamma link set veth0 up
304 ip -netns $ioam_node_gamma link set lo up
305 ip -netns $ioam_node_gamma route add db01::/64 via db02::1 dev veth0
306
307 # - IOAM config -
308 ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.ioam6_id=${ALPHA[0]}
309 ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.ioam6_id_wide=${ALPHA[1]}
310 ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id=${ALPHA[4]}
311 ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${ALPHA[5]}
312 ip -netns $ioam_node_alpha ioam namespace add 123 data ${ALPHA[6]} wide ${ALPHA[7]}
313 ip -netns $ioam_node_alpha ioam schema add ${ALPHA[8]} "${ALPHA[9]}"
314 ip -netns $ioam_node_alpha ioam namespace set 123 schema ${ALPHA[8]}
315
316 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.all.forwarding=1
317 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.ioam6_id=${BETA[0]}
318 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.ioam6_id_wide=${BETA[1]}
319 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
320 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_id=${BETA[2]}
321 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${BETA[3]}
322 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth1.ioam6_id=${BETA[4]}
323 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth1.ioam6_id_wide=${BETA[5]}
324 ip -netns $ioam_node_beta ioam namespace add 123 data ${BETA[6]} wide ${BETA[7]}
325 ip -netns $ioam_node_beta ioam schema add ${BETA[8]} "${BETA[9]}"
326 ip -netns $ioam_node_beta ioam namespace set 123 schema ${BETA[8]}
327
328 ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.ioam6_id=${GAMMA[0]}
329 ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.ioam6_id_wide=${GAMMA[1]}
330 ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
331 ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id=${GAMMA[2]}
332 ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${GAMMA[3]}
333 ip -netns $ioam_node_gamma ioam namespace add 123 data ${GAMMA[6]} wide ${GAMMA[7]}
334
335 sleep 1
336
337 ip netns exec $ioam_node_alpha ping6 -c 5 -W 1 db02::2 &>/dev/null
338 if [ $? != 0 ]
339 then
340 echo "Setup FAILED"
341 cleanup &>/dev/null
342 exit 0
343 fi
344 }
345
346 log_test_passed()
347 {
348 local desc=$1
349 printf "TEST: %-60s [ OK ]\n" "${desc}"
350 }
351
352 log_test_failed()
353 {
354 local desc=$1
355 printf "TEST: %-60s [FAIL]\n" "${desc}"
356 }
357
358 log_results()
359 {
360 echo "- Tests passed: ${npassed}"
361 echo "- Tests failed: ${nfailed}"
362 }
363
364 run_test()
365 {
366 local name=$1
367 local desc=$2
368 local node_src=$3
369 local node_dst=$4
370 local ip6_dst=$5
371 local trace_type=$6
372 local ioam_ns=$7
373 local type=$8
374
375 ip netns exec $node_dst ./ioam6_parser $name $trace_type $ioam_ns $type &
376 local spid=$!
377 sleep 0.1
378
379 ip netns exec $node_src ping6 -t 64 -c 1 -W 1 $ip6_dst &>/dev/null
380 if [ $? != 0 ]
381 then
382 nfailed=$((nfailed+1))
383 log_test_failed "${desc}"
384 kill -2 $spid &>/dev/null
385 else
386 wait $spid
387 if [ $? = 0 ]
388 then
389 npassed=$((npassed+1))
390 log_test_passed "${desc}"
391 else
392 nfailed=$((nfailed+1))
393 log_test_failed "${desc}"
394 fi
395 fi
396 }
397
398 run()
399 {
400 echo
401 printf "%0.s-" {1..74}
402 echo
403 echo "OUTPUT tests"
404 printf "%0.s-" {1..74}
405 echo
406
407 # set OUTPUT settings
408 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=0
409
410 for t in $TESTS_OUTPUT
411 do
412 $t "inline"
413 [ $encap_tests = 0 ] && $t "encap"
414 done
415
416 # clean OUTPUT settings
417 ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
418 ip -netns $ioam_node_alpha route change db01::/64 dev veth0
419
420
421 echo
422 printf "%0.s-" {1..74}
423 echo
424 echo "INPUT tests"
425 printf "%0.s-" {1..74}
426 echo
427
428 # set INPUT settings
429 ip -netns $ioam_node_alpha ioam namespace del 123
430
431 for t in $TESTS_INPUT
432 do
433 $t "inline"
434 [ $encap_tests = 0 ] && $t "encap"
435 done
436
437 # clean INPUT settings
438 ip -netns $ioam_node_alpha ioam namespace add 123 \
439 data ${ALPHA[6]} wide ${ALPHA[7]}
440 ip -netns $ioam_node_alpha ioam namespace set 123 schema ${ALPHA[8]}
441 ip -netns $ioam_node_alpha route change db01::/64 dev veth0
442
443 echo
444 printf "%0.s-" {1..74}
445 echo
446 echo "GLOBAL tests"
447 printf "%0.s-" {1..74}
448 echo
449
450 for t in $TESTS_GLOBAL
451 do
452 $t "inline"
453 [ $encap_tests = 0 ] && $t "encap"
454 done
455
456 echo
457 log_results
458 }
459
460 bit2type=(
461 0x800000 0x400000 0x200000 0x100000 0x080000 0x040000 0x020000 0x010000
462 0x008000 0x004000 0x002000 0x001000 0x000800 0x000400 0x000200 0x000100
463 0x000080 0x000040 0x000020 0x000010 0x000008 0x000004 0x000002
464 )
465 bit2size=( 4 4 4 4 4 4 4 4 8 8 8 4 4 4 4 4 4 4 4 4 4 4 4 )
466
467
468 ################################################################################
469 # #
470 # OUTPUT tests #
471 # #
472 # Two nodes (sender/receiver), IOAM disabled on ingress for the receiver. #
473 ################################################################################
474
475 out_undef_ns()
476 {
477 ##############################################################################
478 # Make sure that the encap node won't fill the trace if the chosen IOAM #
479 # namespace is not configured locally. #
480 ##############################################################################
481 local desc="Unknown IOAM namespace"
482
483 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
484 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
485
486 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
487 trace prealloc type 0x800000 ns 0 size 4 dev veth0
488
489 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
490 db01::1 0x800000 0 $1
491
492 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
493 }
494
495 out_no_room()
496 {
497 ##############################################################################
498 # Make sure that the encap node won't fill the trace and will set the #
499 # Overflow flag since there is no room enough for its data. #
500 ##############################################################################
501 local desc="Missing trace room"
502
503 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
504 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
505
506 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
507 trace prealloc type 0xc00000 ns 123 size 4 dev veth0
508
509 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
510 db01::1 0xc00000 123 $1
511
512 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
513 }
514
515 out_bits()
516 {
517 ##############################################################################
518 # Make sure that, for each trace type bit, the encap node will either: #
519 # (i) fill the trace with its data when it is a supported bit #
520 # (ii) not fill the trace with its data when it is an unsupported bit #
521 ##############################################################################
522 local desc="Trace type with bit <n> only"
523
524 local tmp=${bit2size[22]}
525 bit2size[22]=$(( $tmp + ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) ))
526
527 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
528 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
529
530 for i in {0..22}
531 do
532 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
533 trace prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \
534 dev veth0 &>/dev/null
535
536 local cmd_res=$?
537 local descr="${desc/<n>/$i}"
538
539 if [[ $i -ge 12 && $i -le 21 ]]
540 then
541 if [ $cmd_res != 0 ]
542 then
543 npassed=$((npassed+1))
544 log_test_passed "$descr ($1 mode)"
545 else
546 nfailed=$((nfailed+1))
547 log_test_failed "$descr ($1 mode)"
548 fi
549 else
550 run_test "out_bit$i" "$descr ($1 mode)" $ioam_node_alpha \
551 $ioam_node_beta db01::1 ${bit2type[$i]} 123 $1
552 fi
553 done
554
555 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
556
557 bit2size[22]=$tmp
558 }
559
560 out_full_supp_trace()
561 {
562 ##############################################################################
563 # Make sure that the encap node will correctly fill a full trace. Be careful,#
564 # "full trace" here does NOT mean all bits (only supported ones). #
565 ##############################################################################
566 local desc="Full supported trace"
567
568 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
569 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
570
571 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
572 trace prealloc type 0xfff002 ns 123 size 100 dev veth0
573
574 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
575 db01::1 0xfff002 123 $1
576
577 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
578 }
579
580
581 ################################################################################
582 # #
583 # INPUT tests #
584 # #
585 # Two nodes (sender/receiver), the sender MUST NOT fill the trace upon #
586 # insertion -> the IOAM namespace configured on the sender is removed #
587 # and is used in the inserted trace to force the sender not to fill it. #
588 ################################################################################
589
590 in_undef_ns()
591 {
592 ##############################################################################
593 # Make sure that the receiving node won't fill the trace if the related IOAM #
594 # namespace is not configured locally. #
595 ##############################################################################
596 local desc="Unknown IOAM namespace"
597
598 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
599 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
600
601 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
602 trace prealloc type 0x800000 ns 0 size 4 dev veth0
603
604 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
605 db01::1 0x800000 0 $1
606
607 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
608 }
609
610 in_no_room()
611 {
612 ##############################################################################
613 # Make sure that the receiving node won't fill the trace and will set the #
614 # Overflow flag if there is no room enough for its data. #
615 ##############################################################################
616 local desc="Missing trace room"
617
618 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
619 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
620
621 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
622 trace prealloc type 0xc00000 ns 123 size 4 dev veth0
623
624 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
625 db01::1 0xc00000 123 $1
626
627 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
628 }
629
630 in_bits()
631 {
632 ##############################################################################
633 # Make sure that, for each trace type bit, the receiving node will either: #
634 # (i) fill the trace with its data when it is a supported bit #
635 # (ii) not fill the trace with its data when it is an unsupported bit #
636 ##############################################################################
637 local desc="Trace type with bit <n> only"
638
639 local tmp=${bit2size[22]}
640 bit2size[22]=$(( $tmp + ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) ))
641
642 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
643 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
644
645 for i in {0..11} {22..22}
646 do
647 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
648 trace prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \
649 dev veth0
650
651 run_test "in_bit$i" "${desc/<n>/$i} ($1 mode)" $ioam_node_alpha \
652 $ioam_node_beta db01::1 ${bit2type[$i]} 123 $1
653 done
654
655 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
656
657 bit2size[22]=$tmp
658 }
659
660 in_oflag()
661 {
662 ##############################################################################
663 # Make sure that the receiving node won't fill the trace since the Overflow #
664 # flag is set. #
665 ##############################################################################
666 local desc="Overflow flag is set"
667
668 # Exception:
669 # Here, we need the sender to set the Overflow flag. For that, we will add
670 # back the IOAM namespace that was previously configured on the sender.
671 ip -netns $ioam_node_alpha ioam namespace add 123
672
673 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
674 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
675
676 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
677 trace prealloc type 0xc00000 ns 123 size 4 dev veth0
678
679 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
680 db01::1 0xc00000 123 $1
681
682 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
683
684 # And we clean the exception for this test to get things back to normal for
685 # other INPUT tests
686 ip -netns $ioam_node_alpha ioam namespace del 123
687 }
688
689 in_full_supp_trace()
690 {
691 ##############################################################################
692 # Make sure that the receiving node will correctly fill a full trace. Be #
693 # careful, "full trace" here does NOT mean all bits (only supported ones). #
694 ##############################################################################
695 local desc="Full supported trace"
696
697 [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
698 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up
699
700 ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \
701 trace prealloc type 0xfff002 ns 123 size 80 dev veth0
702
703 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \
704 db01::1 0xfff002 123 $1
705
706 [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down
707 }
708
709
710 ################################################################################
711 # #
712 # GLOBAL tests #
713 # #
714 # Three nodes (sender/router/receiver), IOAM fully enabled on every node. #
715 ################################################################################
716
717 fwd_full_supp_trace()
718 {
719 ##############################################################################
720 # Make sure that all three nodes correctly filled the full supported trace #
721 # by checking that the trace data is consistent with the predefined config. #
722 ##############################################################################
723 local desc="Forward - Full supported trace"
724
725 [ "$1" = "encap" ] && mode="$1 tundst db02::2" || mode="$1"
726 [ "$1" = "encap" ] && ip -netns $ioam_node_gamma link set ip6tnl0 up
727
728 ip -netns $ioam_node_alpha route change db02::/64 encap ioam6 mode $mode \
729 trace prealloc type 0xfff002 ns 123 size 244 via db01::1 dev veth0
730
731 run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_gamma \
732 db02::2 0xfff002 123 $1
733
734 [ "$1" = "encap" ] && ip -netns $ioam_node_gamma link set ip6tnl0 down
735 }
736
737
738 ################################################################################
739 # #
740 # MAIN #
741 # #
742 ################################################################################
743
744 npassed=0
745 nfailed=0
746
747 if [ "$(id -u)" -ne 0 ]
748 then
749 echo "SKIP: Need root privileges"
750 exit $ksft_skip
751 fi
752
753 if [ ! -x "$(command -v ip)" ]
754 then
755 echo "SKIP: Could not run test without ip tool"
756 exit $ksft_skip
757 fi
758
759 ip ioam &>/dev/null
760 if [ $? = 1 ]
761 then
762 echo "SKIP: iproute2 too old, missing ioam command"
763 exit $ksft_skip
764 fi
765
766 check_kernel_compatibility
767
768 cleanup &>/dev/null
769 setup
770 run
771 cleanup &>/dev/null
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