xref: /linux/tools/testing/selftests/net/fib-onlink-tests.sh (revision 4b660dbd9ee2059850fd30e0df420ca7a38a1856) 
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# IPv4 and IPv6 onlink tests
5
6source lib.sh
7PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
8VERBOSE=0
9
10# Network interfaces
11# - odd in current namespace; even in peer ns
12declare -A NETIFS
13# default VRF
14NETIFS[p1]=veth1
15NETIFS[p2]=veth2
16NETIFS[p3]=veth3
17NETIFS[p4]=veth4
18# VRF
19NETIFS[p5]=veth5
20NETIFS[p6]=veth6
21NETIFS[p7]=veth7
22NETIFS[p8]=veth8
23
24# /24 network
25declare -A V4ADDRS
26V4ADDRS[p1]=169.254.1.1
27V4ADDRS[p2]=169.254.1.2
28V4ADDRS[p3]=169.254.3.1
29V4ADDRS[p4]=169.254.3.2
30V4ADDRS[p5]=169.254.5.1
31V4ADDRS[p6]=169.254.5.2
32V4ADDRS[p7]=169.254.7.1
33V4ADDRS[p8]=169.254.7.2
34
35# /64 network
36declare -A V6ADDRS
37V6ADDRS[p1]=2001:db8:101::1
38V6ADDRS[p2]=2001:db8:101::2
39V6ADDRS[p3]=2001:db8:301::1
40V6ADDRS[p4]=2001:db8:301::2
41V6ADDRS[p5]=2001:db8:501::1
42V6ADDRS[p6]=2001:db8:501::2
43V6ADDRS[p7]=2001:db8:701::1
44V6ADDRS[p8]=2001:db8:701::2
45
46# Test networks:
47# [1] = default table
48# [2] = VRF
49#
50# /32 host routes
51declare -A TEST_NET4
52TEST_NET4[1]=169.254.101
53TEST_NET4[2]=169.254.102
54# /128 host routes
55declare -A TEST_NET6
56TEST_NET6[1]=2001:db8:101
57TEST_NET6[2]=2001:db8:102
58
59# connected gateway
60CONGW[1]=169.254.1.254
61CONGW[2]=169.254.3.254
62CONGW[3]=169.254.5.254
63
64# recursive gateway
65RECGW4[1]=169.254.11.254
66RECGW4[2]=169.254.12.254
67RECGW6[1]=2001:db8:11::64
68RECGW6[2]=2001:db8:12::64
69
70# for v4 mapped to v6
71declare -A TEST_NET4IN6IN6
72TEST_NET4IN6[1]=10.1.1.254
73TEST_NET4IN6[2]=10.2.1.254
74
75# mcast address
76MCAST6=ff02::1
77
78VRF=lisa
79VRF_TABLE=1101
80PBR_TABLE=101
81
82################################################################################
83# utilities
84
85log_test()
86{
87	local rc=$1
88	local expected=$2
89	local msg="$3"
90
91	if [ ${rc} -eq ${expected} ]; then
92		nsuccess=$((nsuccess+1))
93		printf "    TEST: %-50s  [ OK ]\n" "${msg}"
94	else
95		nfail=$((nfail+1))
96		printf "    TEST: %-50s  [FAIL]\n" "${msg}"
97		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
98			echo
99			echo "hit enter to continue, 'q' to quit"
100			read a
101			[ "$a" = "q" ] && exit 1
102		fi
103	fi
104}
105
106log_section()
107{
108	echo
109	echo "######################################################################"
110	echo "TEST SECTION: $*"
111	echo "######################################################################"
112}
113
114log_subsection()
115{
116	echo
117	echo "#########################################"
118	echo "TEST SUBSECTION: $*"
119}
120
121run_cmd()
122{
123	local cmd="$*"
124	local out
125	local rc
126
127	if [ "$VERBOSE" = "1" ]; then
128		printf "    COMMAND: $cmd\n"
129	fi
130
131	out=$(eval $cmd 2>&1)
132	rc=$?
133	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
134		echo "    $out"
135	fi
136
137	[ "$VERBOSE" = "1" ] && echo
138
139	return $rc
140}
141
142get_linklocal()
143{
144	local dev=$1
145	local pfx
146	local addr
147
148	addr=$(${pfx} ip -6 -br addr show dev ${dev} | \
149	awk '{
150		for (i = 3; i <= NF; ++i) {
151			if ($i ~ /^fe80/)
152				print $i
153		}
154	}'
155	)
156	addr=${addr/\/*}
157
158	[ -z "$addr" ] && return 1
159
160	echo $addr
161
162	return 0
163}
164
165################################################################################
166#
167
168setup()
169{
170	echo
171	echo "########################################"
172	echo "Configuring interfaces"
173
174	set -e
175
176	# create namespace
177	setup_ns PEER_NS
178
179	# add vrf table
180	ip li add ${VRF} type vrf table ${VRF_TABLE}
181	ip li set ${VRF} up
182	ip ro add table ${VRF_TABLE} unreachable default metric 8192
183	ip -6 ro add table ${VRF_TABLE} unreachable default metric 8192
184
185	# create test interfaces
186	ip li add ${NETIFS[p1]} type veth peer name ${NETIFS[p2]}
187	ip li add ${NETIFS[p3]} type veth peer name ${NETIFS[p4]}
188	ip li add ${NETIFS[p5]} type veth peer name ${NETIFS[p6]}
189	ip li add ${NETIFS[p7]} type veth peer name ${NETIFS[p8]}
190
191	# enslave vrf interfaces
192	for n in 5 7; do
193		ip li set ${NETIFS[p${n}]} vrf ${VRF}
194	done
195
196	# add addresses
197	for n in 1 3 5 7; do
198		ip li set ${NETIFS[p${n}]} up
199		ip addr add ${V4ADDRS[p${n}]}/24 dev ${NETIFS[p${n}]}
200		ip addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} nodad
201	done
202
203	# move peer interfaces to namespace and add addresses
204	for n in 2 4 6 8; do
205		ip li set ${NETIFS[p${n}]} netns ${PEER_NS} up
206		ip -netns ${PEER_NS} addr add ${V4ADDRS[p${n}]}/24 dev ${NETIFS[p${n}]}
207		ip -netns ${PEER_NS} addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} nodad
208	done
209
210	ip -6 ro add default via ${V6ADDRS[p3]/::[0-9]/::64}
211	ip -6 ro add table ${VRF_TABLE} default via ${V6ADDRS[p7]/::[0-9]/::64}
212
213	set +e
214}
215
216cleanup()
217{
218	# make sure we start from a clean slate
219	cleanup_ns ${PEER_NS} 2>/dev/null
220	for n in 1 3 5 7; do
221		ip link del ${NETIFS[p${n}]} 2>/dev/null
222	done
223	ip link del ${VRF} 2>/dev/null
224	ip ro flush table ${VRF_TABLE}
225	ip -6 ro flush table ${VRF_TABLE}
226}
227
228################################################################################
229# IPv4 tests
230#
231
232run_ip()
233{
234	local table="$1"
235	local prefix="$2"
236	local gw="$3"
237	local dev="$4"
238	local exp_rc="$5"
239	local desc="$6"
240
241	# dev arg may be empty
242	[ -n "${dev}" ] && dev="dev ${dev}"
243
244	run_cmd ip ro add table "${table}" "${prefix}"/32 via "${gw}" "${dev}" onlink
245	log_test $? ${exp_rc} "${desc}"
246}
247
248run_ip_mpath()
249{
250	local table="$1"
251	local prefix="$2"
252	local nh1="$3"
253	local nh2="$4"
254	local exp_rc="$5"
255	local desc="$6"
256
257	# dev arg may be empty
258	[ -n "${dev}" ] && dev="dev ${dev}"
259
260	run_cmd ip ro add table "${table}" "${prefix}"/32 \
261		nexthop via ${nh1} nexthop via ${nh2}
262	log_test $? ${exp_rc} "${desc}"
263}
264
265valid_onlink_ipv4()
266{
267	# - unicast connected, unicast recursive
268	#
269	log_subsection "default VRF - main table"
270
271	run_ip 254 ${TEST_NET4[1]}.1 ${CONGW[1]} ${NETIFS[p1]} 0 "unicast connected"
272	run_ip 254 ${TEST_NET4[1]}.2 ${RECGW4[1]} ${NETIFS[p1]} 0 "unicast recursive"
273
274	log_subsection "VRF ${VRF}"
275
276	run_ip ${VRF_TABLE} ${TEST_NET4[2]}.1 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected"
277	run_ip ${VRF_TABLE} ${TEST_NET4[2]}.2 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive"
278
279	log_subsection "VRF device, PBR table"
280
281	run_ip ${PBR_TABLE} ${TEST_NET4[2]}.3 ${CONGW[3]} ${NETIFS[p5]} 0 "unicast connected"
282	run_ip ${PBR_TABLE} ${TEST_NET4[2]}.4 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive"
283
284	# multipath version
285	#
286	log_subsection "default VRF - main table - multipath"
287
288	run_ip_mpath 254 ${TEST_NET4[1]}.5 \
289		"${CONGW[1]} dev ${NETIFS[p1]} onlink" \
290		"${CONGW[2]} dev ${NETIFS[p3]} onlink" \
291		0 "unicast connected - multipath"
292
293	run_ip_mpath 254 ${TEST_NET4[1]}.6 \
294		"${RECGW4[1]} dev ${NETIFS[p1]} onlink" \
295		"${RECGW4[2]} dev ${NETIFS[p3]} onlink" \
296		0 "unicast recursive - multipath"
297
298	run_ip_mpath 254 ${TEST_NET4[1]}.7 \
299		"${CONGW[1]} dev ${NETIFS[p1]}"        \
300		"${CONGW[2]} dev ${NETIFS[p3]} onlink" \
301		0 "unicast connected - multipath onlink first only"
302
303	run_ip_mpath 254 ${TEST_NET4[1]}.8 \
304		"${CONGW[1]} dev ${NETIFS[p1]} onlink" \
305		"${CONGW[2]} dev ${NETIFS[p3]}"        \
306		0 "unicast connected - multipath onlink second only"
307}
308
309invalid_onlink_ipv4()
310{
311	run_ip 254 ${TEST_NET4[1]}.11 ${V4ADDRS[p1]} ${NETIFS[p1]} 2 \
312		"Invalid gw - local unicast address"
313
314	run_ip ${VRF_TABLE} ${TEST_NET4[2]}.11 ${V4ADDRS[p5]} ${NETIFS[p5]} 2 \
315		"Invalid gw - local unicast address, VRF"
316
317	run_ip 254 ${TEST_NET4[1]}.101 ${V4ADDRS[p1]} "" 2 "No nexthop device given"
318
319	run_ip 254 ${TEST_NET4[1]}.102 ${V4ADDRS[p3]} ${NETIFS[p1]} 2 \
320		"Gateway resolves to wrong nexthop device"
321
322	run_ip ${VRF_TABLE} ${TEST_NET4[2]}.103 ${V4ADDRS[p7]} ${NETIFS[p5]} 2 \
323		"Gateway resolves to wrong nexthop device - VRF"
324}
325
326################################################################################
327# IPv6 tests
328#
329
330run_ip6()
331{
332	local table="$1"
333	local prefix="$2"
334	local gw="$3"
335	local dev="$4"
336	local exp_rc="$5"
337	local desc="$6"
338
339	# dev arg may be empty
340	[ -n "${dev}" ] && dev="dev ${dev}"
341
342	run_cmd ip -6 ro add table "${table}" "${prefix}"/128 via "${gw}" "${dev}" onlink
343	log_test $? ${exp_rc} "${desc}"
344}
345
346run_ip6_mpath()
347{
348	local table="$1"
349	local prefix="$2"
350	local opts="$3"
351	local nh1="$4"
352	local nh2="$5"
353	local exp_rc="$6"
354	local desc="$7"
355
356	run_cmd ip -6 ro add table "${table}" "${prefix}"/128 "${opts}" \
357		nexthop via ${nh1} nexthop via ${nh2}
358	log_test $? ${exp_rc} "${desc}"
359}
360
361valid_onlink_ipv6()
362{
363	# - unicast connected, unicast recursive, v4-mapped
364	#
365	log_subsection "default VRF - main table"
366
367	run_ip6 254 ${TEST_NET6[1]}::1 ${V6ADDRS[p1]/::*}::64 ${NETIFS[p1]} 0 "unicast connected"
368	run_ip6 254 ${TEST_NET6[1]}::2 ${RECGW6[1]} ${NETIFS[p1]} 0 "unicast recursive"
369	run_ip6 254 ${TEST_NET6[1]}::3 ::ffff:${TEST_NET4IN6[1]} ${NETIFS[p1]} 0 "v4-mapped"
370
371	log_subsection "VRF ${VRF}"
372
373	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::1 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected"
374	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::2 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive"
375	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::3 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped"
376
377	log_subsection "VRF device, PBR table"
378
379	run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::4 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected"
380	run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::5 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive"
381	run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::6 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped"
382
383	# multipath version
384	#
385	log_subsection "default VRF - main table - multipath"
386
387	run_ip6_mpath 254 ${TEST_NET6[1]}::4 "onlink" \
388		"${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]}" \
389		"${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]}" \
390		0 "unicast connected - multipath onlink"
391
392	run_ip6_mpath 254 ${TEST_NET6[1]}::5 "onlink" \
393		"${RECGW6[1]} dev ${NETIFS[p1]}" \
394		"${RECGW6[2]} dev ${NETIFS[p3]}" \
395		0 "unicast recursive - multipath onlink"
396
397	run_ip6_mpath 254 ${TEST_NET6[1]}::6 "onlink" \
398		"::ffff:${TEST_NET4IN6[1]} dev ${NETIFS[p1]}" \
399		"::ffff:${TEST_NET4IN6[2]} dev ${NETIFS[p3]}" \
400		0 "v4-mapped - multipath onlink"
401
402	run_ip6_mpath 254 ${TEST_NET6[1]}::7 "" \
403		"${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]} onlink" \
404		"${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]} onlink" \
405		0 "unicast connected - multipath onlink both nexthops"
406
407	run_ip6_mpath 254 ${TEST_NET6[1]}::8 "" \
408		"${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]} onlink" \
409		"${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]}" \
410		0 "unicast connected - multipath onlink first only"
411
412	run_ip6_mpath 254 ${TEST_NET6[1]}::9 "" \
413		"${V6ADDRS[p1]/::*}::64 dev ${NETIFS[p1]}"        \
414		"${V6ADDRS[p3]/::*}::64 dev ${NETIFS[p3]} onlink" \
415		0 "unicast connected - multipath onlink second only"
416}
417
418invalid_onlink_ipv6()
419{
420	local lladdr
421
422	lladdr=$(get_linklocal ${NETIFS[p1]}) || return 1
423
424	run_ip6 254 ${TEST_NET6[1]}::11 ${V6ADDRS[p1]} ${NETIFS[p1]} 2 \
425		"Invalid gw - local unicast address"
426	run_ip6 254 ${TEST_NET6[1]}::12 ${lladdr} ${NETIFS[p1]} 2 \
427		"Invalid gw - local linklocal address"
428	run_ip6 254 ${TEST_NET6[1]}::12 ${MCAST6} ${NETIFS[p1]} 2 \
429		"Invalid gw - multicast address"
430
431	lladdr=$(get_linklocal ${NETIFS[p5]}) || return 1
432	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::11 ${V6ADDRS[p5]} ${NETIFS[p5]} 2 \
433		"Invalid gw - local unicast address, VRF"
434	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::12 ${lladdr} ${NETIFS[p5]} 2 \
435		"Invalid gw - local linklocal address, VRF"
436	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::12 ${MCAST6} ${NETIFS[p5]} 2 \
437		"Invalid gw - multicast address, VRF"
438
439	run_ip6 254 ${TEST_NET6[1]}::101 ${V6ADDRS[p1]} "" 2 \
440		"No nexthop device given"
441
442	# default VRF validation is done against LOCAL table
443	# run_ip6 254 ${TEST_NET6[1]}::102 ${V6ADDRS[p3]/::[0-9]/::64} ${NETIFS[p1]} 2 \
444	#	"Gateway resolves to wrong nexthop device"
445
446	run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::103 ${V6ADDRS[p7]/::[0-9]/::64} ${NETIFS[p5]} 2 \
447		"Gateway resolves to wrong nexthop device - VRF"
448}
449
450run_onlink_tests()
451{
452	log_section "IPv4 onlink"
453	log_subsection "Valid onlink commands"
454	valid_onlink_ipv4
455	log_subsection "Invalid onlink commands"
456	invalid_onlink_ipv4
457
458	log_section "IPv6 onlink"
459	log_subsection "Valid onlink commands"
460	valid_onlink_ipv6
461	log_subsection "Invalid onlink commands"
462	invalid_onlink_ipv6
463}
464
465################################################################################
466# usage
467
468usage()
469{
470	cat <<EOF
471usage: ${0##*/} OPTS
472
473        -p          Pause on fail
474        -v          verbose mode (show commands and output)
475EOF
476}
477
478################################################################################
479# main
480
481nsuccess=0
482nfail=0
483
484while getopts :t:pPhv o
485do
486	case $o in
487		p) PAUSE_ON_FAIL=yes;;
488		v) VERBOSE=$(($VERBOSE + 1));;
489		h) usage; exit 0;;
490		*) usage; exit 1;;
491	esac
492done
493
494cleanup
495setup
496run_onlink_tests
497cleanup
498
499if [ "$TESTS" != "none" ]; then
500	printf "\nTests passed: %3d\n" ${nsuccess}
501	printf "Tests failed: %3d\n"   ${nfail}
502fi
503