xref: /linux/tools/testing/selftests/net/ioam6.sh (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80)
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
120source 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
130ALPHA=(
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
143BETA=(
144	2
145	22222222
146	201
147	201201
148	202
149	202202
150	0xdeadbee1
151	0xcafec0caf11dc0de
152	666
153	"Hello there -Obi"
154)
155
156GAMMA=(
157	3
158	33333333
159	301
160	301301
161	0xffff
162	0xffffffff
163	0xdeadbee2
164	0xcafec0caf22dc0de
165	0xffffff
166	""
167)
168
169TESTS_OUTPUT="
170	out_undef_ns
171	out_no_room
172	out_bits
173	out_full_supp_trace
174"
175
176TESTS_INPUT="
177	in_undef_ns
178	in_no_room
179	in_oflag
180	in_bits
181	in_full_supp_trace
182"
183
184TESTS_GLOBAL="
185	fwd_full_supp_trace
186"
187
188
189################################################################################
190#                                                                              #
191#                                   LIBRARY                                    #
192#                                                                              #
193################################################################################
194
195check_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
262cleanup()
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
275setup()
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
346log_test_passed()
347{
348  local desc=$1
349  printf "TEST: %-60s  [ OK ]\n" "${desc}"
350}
351
352log_test_failed()
353{
354  local desc=$1
355  printf "TEST: %-60s  [FAIL]\n" "${desc}"
356}
357
358log_results()
359{
360  echo "- Tests passed: ${npassed}"
361  echo "- Tests failed: ${nfailed}"
362}
363
364run_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
398run()
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
460bit2type=(
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)
465bit2size=( 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
475out_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
495out_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 $ioam_node_beta link set ip6tnl0 down
513}
514
515out_bits()
516{
517  ##############################################################################
518  # Make sure that, for each trace type bit, the encap node will either:       #
519  #  (i)  fill the trace with its data when it is a supported bit              #
520  #  (ii) not fill the trace with its data when it is an unsupported bit       #
521  ##############################################################################
522  local desc="Trace type with bit <n> only"
523
524  local tmp=${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
560out_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
590in_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
610in_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 $ioam_node_beta link set ip6tnl0 down
628}
629
630in_bits()
631{
632  ##############################################################################
633  # Make sure that, for each trace type bit, the receiving node will either:   #
634  #  (i)  fill the trace with its data when it is a supported bit              #
635  #  (ii) not fill the trace with its data when it is an unsupported bit       #
636  ##############################################################################
637  local desc="Trace type with bit <n> only"
638
639  local tmp=${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
660in_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
689in_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
717fwd_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 $ioam_node_gamma link set ip6tnl0 down
735}
736
737
738################################################################################
739#                                                                              #
740#                                     MAIN                                     #
741#                                                                              #
742################################################################################
743
744npassed=0
745nfailed=0
746
747if [ "$(id -u)" -ne 0 ]
748then
749  echo "SKIP: Need root privileges"
750  exit $ksft_skip
751fi
752
753if [ ! -x "$(command -v ip)" ]
754then
755  echo "SKIP: Could not run test without ip tool"
756  exit $ksft_skip
757fi
758
759ip ioam &>/dev/null
760if [ $? = 1 ]
761then
762  echo "SKIP: iproute2 too old, missing ioam command"
763  exit $ksft_skip
764fi
765
766check_kernel_compatibility
767
768cleanup &>/dev/null
769setup
770run
771cleanup &>/dev/null
772