1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 # Double quotes to prevent globbing and word splitting is recommended in new
5 # code but we accept it, especially because there were too many before having
6 # address all other issues detected by shellcheck.
7 #shellcheck disable=SC2086
8
9 . "$(dirname "${0}")/mptcp_lib.sh"
10
11 time_start=$(date +%s)
12
13 optstring="S:R:d:e:l:r:h4cm:f:tC"
14 ret=0
15 final_ret=0
16 sin=""
17 sout=""
18 cin_disconnect=""
19 cin=""
20 cout=""
21 capture=false
22 timeout_poll=30
23 timeout_test=$((timeout_poll * 2 + 1))
24 ipv6=true
25 ethtool_random_on=true
26 tc_delay="$((RANDOM%50))"
27 tc_loss=$((RANDOM%101))
28 testmode=""
29 sndbuf=0
30 rcvbuf=0
31 options_log=true
32 do_tcp=0
33 checksum=false
34 filesize=0
35 connect_per_transfer=1
36 port=$((10000 - 1))
37
38 if [ $tc_loss -eq 100 ];then
39 tc_loss=1%
40 elif [ $tc_loss -ge 10 ]; then
41 tc_loss=0.$tc_loss%
42 elif [ $tc_loss -ge 1 ]; then
43 tc_loss=0.0$tc_loss%
44 else
45 tc_loss=""
46 fi
47
48 usage() {
49 echo "Usage: $0 [ -a ]"
50 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)"
51 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)"
52 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)"
53 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)"
54 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)"
55 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)"
56 echo -e "\t-f: size of file to transfer in bytes (default random)"
57 echo -e "\t-S: set sndbuf value (default: use kernel default)"
58 echo -e "\t-R: set rcvbuf value (default: use kernel default)"
59 echo -e "\t-m: test mode (poll, sendfile; default: poll)"
60 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)"
61 echo -e "\t-C: enable the MPTCP data checksum"
62 }
63
64 while getopts "$optstring" option;do
65 case "$option" in
66 "h")
67 usage $0
68 exit ${KSFT_PASS}
69 ;;
70 "d")
71 if [ $OPTARG -ge 0 ];then
72 tc_delay="$OPTARG"
73 else
74 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2
75 exit ${KSFT_FAIL}
76 fi
77 ;;
78 "e")
79 ethtool_args="$ethtool_args $OPTARG off"
80 ethtool_random_on=false
81 ;;
82 "l")
83 tc_loss="$OPTARG"
84 ;;
85 "r")
86 tc_reorder="$OPTARG"
87 ;;
88 "4")
89 ipv6=false
90 ;;
91 "c")
92 capture=true
93 ;;
94 "S")
95 if [ $OPTARG -ge 0 ];then
96 sndbuf="$OPTARG"
97 else
98 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2
99 exit ${KSFT_FAIL}
100 fi
101 ;;
102 "R")
103 if [ $OPTARG -ge 0 ];then
104 rcvbuf="$OPTARG"
105 else
106 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2
107 exit ${KSFT_FAIL}
108 fi
109 ;;
110 "m")
111 testmode="$OPTARG"
112 ;;
113 "f")
114 filesize="$OPTARG"
115 ;;
116 "t")
117 do_tcp=$((do_tcp+1))
118 ;;
119 "C")
120 checksum=true
121 ;;
122 "?")
123 usage $0
124 exit ${KSFT_FAIL}
125 ;;
126 esac
127 done
128
129 ns1=""
130 ns2=""
131 ns3=""
132 ns4=""
133
134 TEST_GROUP=""
135
136 # This function is used in the cleanup trap
137 #shellcheck disable=SC2317
138 cleanup()
139 {
140 rm -f "$cin_disconnect" "$cout_disconnect"
141 rm -f "$cin" "$cout"
142 rm -f "$sin" "$sout"
143 rm -f "$capout"
144
145 mptcp_lib_ns_exit "${ns1}" "${ns2}" "${ns3}" "${ns4}"
146 }
147
148 mptcp_lib_check_mptcp
149 mptcp_lib_check_kallsyms
150 mptcp_lib_check_tools ip tc
151
152 sin=$(mktemp)
153 sout=$(mktemp)
154 cin=$(mktemp)
155 cout=$(mktemp)
156 capout=$(mktemp)
157 cin_disconnect="$cin".disconnect
158 cout_disconnect="$cout".disconnect
159 trap cleanup EXIT
160
161 mptcp_lib_ns_init ns1 ns2 ns3 ns4
162
163 # "$ns1" ns2 ns3 ns4
164 # ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3
165 # - drop 1% -> reorder 25%
166 # <- TSO off -
167
168 ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2"
169 ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3"
170 ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4"
171
172 ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2
173 ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad
174
175 ip -net "$ns1" link set ns1eth2 up
176 ip -net "$ns1" route add default via 10.0.1.2
177 ip -net "$ns1" route add default via dead:beef:1::2
178
179 ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1
180 ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad
181 ip -net "$ns2" link set ns2eth1 up
182
183 ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3
184 ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad
185 ip -net "$ns2" link set ns2eth3 up
186 ip -net "$ns2" route add default via 10.0.2.2
187 ip -net "$ns2" route add default via dead:beef:2::2
188 ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1
189 ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1
190
191 ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2
192 ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad
193 ip -net "$ns3" link set ns3eth2 up
194
195 ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4
196 ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad
197 ip -net "$ns3" link set ns3eth4 up
198 ip -net "$ns3" route add default via 10.0.2.1
199 ip -net "$ns3" route add default via dead:beef:2::1
200 ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1
201 ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1
202
203 ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3
204 ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad
205 ip -net "$ns4" link set ns4eth3 up
206 ip -net "$ns4" route add default via 10.0.3.2
207 ip -net "$ns4" route add default via dead:beef:3::2
208
209 if $checksum; then
210 for i in "$ns1" "$ns2" "$ns3" "$ns4";do
211 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1
212 done
213 fi
214
215 set_ethtool_flags() {
216 local ns="$1"
217 local dev="$2"
218 local flags="$3"
219
220 if ip netns exec $ns ethtool -K $dev $flags 2>/dev/null; then
221 mptcp_lib_pr_info "set $ns dev $dev: ethtool -K $flags"
222 fi
223 }
224
225 set_random_ethtool_flags() {
226 local flags=""
227 local r=$RANDOM
228
229 local pick1=$((r & 1))
230 local pick2=$((r & 2))
231 local pick3=$((r & 4))
232
233 [ $pick1 -ne 0 ] && flags="tso off"
234 [ $pick2 -ne 0 ] && flags="$flags gso off"
235 [ $pick3 -ne 0 ] && flags="$flags gro off"
236
237 [ -z "$flags" ] && return
238
239 set_ethtool_flags "$1" "$2" "$flags"
240 }
241
242 if $ethtool_random_on;then
243 set_random_ethtool_flags "$ns3" ns3eth2
244 set_random_ethtool_flags "$ns4" ns4eth3
245 else
246 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args"
247 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args"
248 fi
249
250 print_larger_title() {
251 # here we don't have the time, a bit longer for the alignment
252 MPTCP_LIB_TEST_FORMAT="%02u %-69s" \
253 mptcp_lib_print_title "${@}"
254 }
255
256 check_mptcp_disabled()
257 {
258 local disabled_ns
259 mptcp_lib_ns_init disabled_ns
260
261 print_larger_title "New MPTCP socket can be blocked via sysctl"
262
263 # mainly to cover more code
264 if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then
265 mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs"
266 mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs"
267 ret=${KSFT_FAIL}
268 return 1
269 fi
270
271 # net.mptcp.enabled should be enabled by default
272 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then
273 mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default"
274 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default"
275 ret=${KSFT_FAIL}
276 return 1
277 fi
278 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0
279
280 local err=0
281 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \
282 grep -q "^socket: Protocol not available$" && err=1
283 mptcp_lib_ns_exit "${disabled_ns}"
284
285 if [ ${err} -eq 0 ]; then
286 mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl"
287 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl"
288 ret=${KSFT_FAIL}
289 return 1
290 fi
291
292 mptcp_lib_pr_ok
293 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl"
294 return 0
295 }
296
297 do_ping()
298 {
299 local listener_ns="$1"
300 local connector_ns="$2"
301 local connect_addr="$3"
302 local ping_args="-q -c 1"
303 local rc=0
304
305 if mptcp_lib_is_v6 "${connect_addr}"; then
306 $ipv6 || return 0
307 ping_args="${ping_args} -6"
308 fi
309
310 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1
311
312 if [ $rc -ne 0 ] ; then
313 mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity"
314 ret=${KSFT_FAIL}
315
316 return 1
317 fi
318
319 return 0
320 }
321
322 do_transfer()
323 {
324 local listener_ns="$1"
325 local connector_ns="$2"
326 local cl_proto="$3"
327 local srv_proto="$4"
328 local connect_addr="$5"
329 local local_addr="$6"
330 local extra_args="$7"
331
332 port=$((port + 1))
333
334 if [ "$rcvbuf" -gt 0 ]; then
335 extra_args+=" -R $rcvbuf"
336 fi
337
338 if [ "$sndbuf" -gt 0 ]; then
339 extra_args+=" -S $sndbuf"
340 fi
341
342 if [ -n "$testmode" ]; then
343 extra_args+=" -m $testmode"
344 fi
345
346 if [ -n "$extra_args" ] && $options_log; then
347 mptcp_lib_pr_info "extra options: $extra_args"
348 fi
349 options_log=false
350
351 :> "$cout"
352 :> "$sout"
353 :> "$capout"
354
355 local addr_port
356 addr_port=$(printf "%s:%d" ${connect_addr} ${port})
357 local pretty_title
358 pretty_title="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})"
359 mptcp_lib_print_title "${pretty_title}"
360
361 local tap_title="${connector_ns:0:3} ${cl_proto} -> ${listener_ns:0:3} (${addr_port}) ${srv_proto}"
362
363 if $capture; then
364 local capuser
365 local rndh="${connector_ns:4}"
366 if [ -z $SUDO_USER ] ; then
367 capuser=""
368 else
369 capuser="-Z $SUDO_USER"
370 fi
371
372 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}"
373 local capopt="-i any -s 65535 -B 32768 ${capuser}"
374
375 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 &
376 local cappid_listener=$!
377
378 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 &
379 local cappid_connector=$!
380
381 sleep 1
382 fi
383
384 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \
385 nstat -n
386 if [ ${listener_ns} != ${connector_ns} ]; then
387 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \
388 nstat -n
389 fi
390
391 local stat_synrx_last_l
392 local stat_ackrx_last_l
393 local stat_cookietx_last
394 local stat_cookierx_last
395 local stat_csum_err_s
396 local stat_csum_err_c
397 local stat_tcpfb_last_l
398 stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX")
399 stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX")
400 stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent")
401 stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv")
402 stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr")
403 stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr")
404 stat_tcpfb_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK")
405
406 timeout ${timeout_test} \
407 ip netns exec ${listener_ns} \
408 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
409 $extra_args $local_addr < "$sin" > "$sout" &
410 local spid=$!
411
412 mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}"
413
414 local start
415 start=$(date +%s%3N)
416 timeout ${timeout_test} \
417 ip netns exec ${connector_ns} \
418 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
419 $extra_args $connect_addr < "$cin" > "$cout" &
420 local cpid=$!
421
422 wait $cpid
423 local retc=$?
424 wait $spid
425 local rets=$?
426
427 local stop
428 stop=$(date +%s%3N)
429
430 if $capture; then
431 sleep 1
432 kill ${cappid_listener}
433 kill ${cappid_connector}
434 fi
435
436 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \
437 nstat | grep Tcp > /tmp/${listener_ns}.out
438 if [ ${listener_ns} != ${connector_ns} ]; then
439 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \
440 nstat | grep Tcp > /tmp/${connector_ns}.out
441 fi
442
443 local duration
444 duration=$((stop-start))
445 printf "(duration %05sms) " "${duration}"
446 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
447 mptcp_lib_pr_fail "client exit code $retc, server $rets"
448 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2
449 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port"
450 cat /tmp/${listener_ns}.out
451 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2
452 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port"
453 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out
454
455 echo
456 cat "$capout"
457 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}"
458 return 1
459 fi
460
461 mptcp_lib_check_transfer $sin $cout "file received by client"
462 retc=$?
463 mptcp_lib_check_transfer $cin $sout "file received by server"
464 rets=$?
465
466 local extra=""
467 local stat_synrx_now_l
468 local stat_ackrx_now_l
469 local stat_cookietx_now
470 local stat_cookierx_now
471 local stat_ooo_now
472 local stat_tcpfb_now_l
473 stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX")
474 stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX")
475 stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent")
476 stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv")
477 stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue")
478 stat_tcpfb_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK")
479
480 expect_synrx=$((stat_synrx_last_l))
481 expect_ackrx=$((stat_ackrx_last_l))
482
483 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies)
484 cookies=${cookies##*=}
485
486 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then
487 expect_synrx=$((stat_synrx_last_l+connect_per_transfer))
488 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer))
489 fi
490
491 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then
492 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx_now_l})" \
493 "than expected (${expect_synrx})"
494 retc=1
495 fi
496 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then
497 if [ ${stat_ooo_now} -eq 0 ]; then
498 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx_now_l})" \
499 "than expected (${expect_ackrx})"
500 rets=1
501 else
502 extra+=" [ Note ] fallback due to TCP OoO"
503 fi
504 fi
505
506 if $checksum; then
507 local csum_err_s
508 local csum_err_c
509 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr")
510 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr")
511
512 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s))
513 if [ $csum_err_s_nr -gt 0 ]; then
514 mptcp_lib_pr_fail "server got ${csum_err_s_nr} data checksum error[s]"
515 rets=1
516 fi
517
518 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c))
519 if [ $csum_err_c_nr -gt 0 ]; then
520 mptcp_lib_pr_fail "client got ${csum_err_c_nr} data checksum error[s]"
521 retc=1
522 fi
523 fi
524
525 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then
526 mptcp_lib_pr_fail "unexpected fallback to TCP"
527 rets=1
528 fi
529
530 if [ $cookies -eq 2 ];then
531 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then
532 extra+=" WARN: CookieSent: did not advance"
533 fi
534 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then
535 extra+=" WARN: CookieRecv: did not advance"
536 fi
537 else
538 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then
539 extra+=" WARN: CookieSent: changed"
540 fi
541 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then
542 extra+=" WARN: CookieRecv: changed"
543 fi
544 fi
545
546 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then
547 extra+=" WARN: SYNRX: expect ${expect_synrx},"
548 extra+=" got ${stat_synrx_now_l} (probably retransmissions)"
549 fi
550 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then
551 extra+=" WARN: ACKRX: expect ${expect_ackrx},"
552 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)"
553 fi
554
555 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then
556 mptcp_lib_pr_ok "${extra:1}"
557 mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}"
558 else
559 if [ -n "${extra}" ]; then
560 mptcp_lib_print_warn "${extra:1}"
561 fi
562 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}"
563 fi
564
565 cat "$capout"
566 [ $retc -eq 0 ] && [ $rets -eq 0 ]
567 }
568
569 make_file()
570 {
571 local name=$1
572 local who=$2
573 local SIZE=$filesize
574 local ksize
575 local rem
576
577 if [ $SIZE -eq 0 ]; then
578 local MAXSIZE=$((1024 * 1024 * 8))
579 local MINSIZE=$((1024 * 256))
580
581 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE))
582 fi
583
584 ksize=$((SIZE / 1024))
585 rem=$((SIZE - (ksize * 1024)))
586
587 mptcp_lib_make_file $name 1024 $ksize
588 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null
589
590 echo "Created $name (size $(du -b "$name")) containing data sent by $who"
591 }
592
593 run_tests_lo()
594 {
595 local listener_ns="$1"
596 local connector_ns="$2"
597 local connect_addr="$3"
598 local loopback="$4"
599 local extra_args="$5"
600 local lret=0
601
602 # skip if test programs are running inside same netns for subsequent runs.
603 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then
604 return 0
605 fi
606
607 # skip if we don't want v6
608 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then
609 return 0
610 fi
611
612 local local_addr
613 if mptcp_lib_is_v6 "${connect_addr}"; then
614 local_addr="::"
615 else
616 local_addr="0.0.0.0"
617 fi
618
619 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \
620 ${connect_addr} ${local_addr} "${extra_args}"
621 lret=$?
622 if [ $lret -ne 0 ]; then
623 ret=$lret
624 return 1
625 fi
626
627 if [ $do_tcp -eq 0 ]; then
628 # don't bother testing fallback tcp except for loopback case.
629 if [ ${listener_ns} != ${connector_ns} ]; then
630 return 0
631 fi
632 fi
633
634 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \
635 ${connect_addr} ${local_addr} "${extra_args}"
636 lret=$?
637 if [ $lret -ne 0 ]; then
638 ret=$lret
639 return 1
640 fi
641
642 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \
643 ${connect_addr} ${local_addr} "${extra_args}"
644 lret=$?
645 if [ $lret -ne 0 ]; then
646 ret=$lret
647 return 1
648 fi
649
650 if [ $do_tcp -gt 1 ] ;then
651 do_transfer ${listener_ns} ${connector_ns} TCP TCP \
652 ${connect_addr} ${local_addr} "${extra_args}"
653 lret=$?
654 if [ $lret -ne 0 ]; then
655 ret=$lret
656 return 1
657 fi
658 fi
659
660 return 0
661 }
662
663 run_tests()
664 {
665 run_tests_lo $1 $2 $3 0
666 }
667
668 run_test_transparent()
669 {
670 local connect_addr="$1"
671 local msg="$2"
672
673 local connector_ns="$ns1"
674 local listener_ns="$ns2"
675 local lret=0
676 local r6flag=""
677
678 TEST_GROUP="${msg}"
679
680 # skip if we don't want v6
681 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then
682 return 0
683 fi
684
685 # IP(V6)_TRANSPARENT has been added after TOS support which came with
686 # the required infrastructure in MPTCP sockopt code. To support TOS, the
687 # following function has been exported (T). Not great but better than
688 # checking for a specific kernel version.
689 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then
690 mptcp_lib_pr_skip "${msg} not supported by the kernel"
691 mptcp_lib_result_skip "${TEST_GROUP}"
692 return
693 fi
694
695 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF"
696 flush ruleset
697 table inet mangle {
698 chain divert {
699 type filter hook prerouting priority -150;
700
701 meta l4proto tcp socket transparent 1 meta mark set 1 accept
702 tcp dport 20000 tproxy to :20000 meta mark set 1 accept
703 }
704 }
705 EOF
706 then
707 mptcp_lib_pr_skip "$msg, could not load nft ruleset"
708 mptcp_lib_fail_if_expected_feature "nft rules"
709 mptcp_lib_result_skip "${TEST_GROUP}"
710 return
711 fi
712
713 local local_addr
714 if mptcp_lib_is_v6 "${connect_addr}"; then
715 local_addr="::"
716 r6flag="-6"
717 else
718 local_addr="0.0.0.0"
719 fi
720
721 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then
722 ip netns exec "$listener_ns" nft flush ruleset
723 mptcp_lib_pr_skip "$msg, ip $r6flag rule failed"
724 mptcp_lib_fail_if_expected_feature "ip rule"
725 mptcp_lib_result_skip "${TEST_GROUP}"
726 return
727 fi
728
729 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then
730 ip netns exec "$listener_ns" nft flush ruleset
731 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100
732 mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed"
733 mptcp_lib_fail_if_expected_feature "ip route"
734 mptcp_lib_result_skip "${TEST_GROUP}"
735 return
736 fi
737
738 mptcp_lib_pr_info "test $msg"
739
740 port=$((20000 - 1))
741 local extra_args="-o TRANSPARENT"
742 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \
743 ${connect_addr} ${local_addr} "${extra_args}"
744 lret=$?
745
746 ip netns exec "$listener_ns" nft flush ruleset
747 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100
748 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100
749
750 if [ $lret -ne 0 ]; then
751 mptcp_lib_pr_fail "$msg, mptcp connection error"
752 ret=$lret
753 return 1
754 fi
755
756 mptcp_lib_pr_info "$msg pass"
757 return 0
758 }
759
760 run_tests_peekmode()
761 {
762 local peekmode="$1"
763
764 TEST_GROUP="peek mode: ${peekmode}"
765 mptcp_lib_pr_info "with peek mode: ${peekmode}"
766 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}"
767 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}"
768 }
769
770 run_tests_mptfo()
771 {
772 TEST_GROUP="MPTFO"
773
774 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then
775 mptcp_lib_pr_skip "TFO not supported by the kernel"
776 mptcp_lib_result_skip "${TEST_GROUP}"
777 return
778 fi
779
780 mptcp_lib_pr_info "with MPTFO start"
781 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2
782 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1
783
784 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO"
785 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO"
786
787 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO"
788 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO"
789
790 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0
791 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0
792 mptcp_lib_pr_info "with MPTFO end"
793 }
794
795 run_tests_disconnect()
796 {
797 local old_cin=$cin
798 local old_sin=$sin
799
800 TEST_GROUP="full disconnect"
801
802 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then
803 mptcp_lib_pr_skip "Full disconnect not supported"
804 mptcp_lib_result_skip "${TEST_GROUP}"
805 return
806 fi
807
808 cat $cin $cin $cin > "$cin".disconnect
809
810 # force do_transfer to cope with the multiple transmissions
811 sin="$cin.disconnect"
812 cin="$cin.disconnect"
813 cin_disconnect="$old_cin"
814 connect_per_transfer=3
815
816 mptcp_lib_pr_info "disconnect"
817 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin"
818 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin"
819
820 # restore previous status
821 sin=$old_sin
822 cin=$old_cin
823 cin_disconnect="$cin".disconnect
824 connect_per_transfer=1
825 }
826
827 display_time()
828 {
829 time_end=$(date +%s)
830 time_run=$((time_end-time_start))
831
832 echo "Time: ${time_run} seconds"
833 }
834
835 log_if_error()
836 {
837 local msg="$1"
838
839 if [ ${ret} -ne 0 ]; then
840 mptcp_lib_pr_fail "${msg}"
841
842 final_ret=${ret}
843 ret=${KSFT_PASS}
844
845 return ${final_ret}
846 fi
847 }
848
849 stop_if_error()
850 {
851 if ! log_if_error "${@}"; then
852 display_time
853 mptcp_lib_result_print_all_tap
854 exit ${final_ret}
855 fi
856 }
857
858 make_file "$cin" "client"
859 make_file "$sin" "server"
860
861 mptcp_lib_subtests_last_ts_reset
862
863 check_mptcp_disabled
864
865 stop_if_error "The kernel configuration is not valid for MPTCP"
866
867 print_larger_title "Validating network environment with pings"
868 for sender in "$ns1" "$ns2" "$ns3" "$ns4";do
869 do_ping "$ns1" $sender 10.0.1.1
870 do_ping "$ns1" $sender dead:beef:1::1
871
872 do_ping "$ns2" $sender 10.0.1.2
873 do_ping "$ns2" $sender dead:beef:1::2
874 do_ping "$ns2" $sender 10.0.2.1
875 do_ping "$ns2" $sender dead:beef:2::1
876
877 do_ping "$ns3" $sender 10.0.2.2
878 do_ping "$ns3" $sender dead:beef:2::2
879 do_ping "$ns3" $sender 10.0.3.2
880 do_ping "$ns3" $sender dead:beef:3::2
881
882 do_ping "$ns4" $sender 10.0.3.1
883 do_ping "$ns4" $sender dead:beef:3::1
884 done
885
886 mptcp_lib_result_code "${ret}" "ping tests"
887
888 stop_if_error "Could not even run ping tests"
889 mptcp_lib_pr_ok
890
891 [ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms
892 tc_info="loss of $tc_loss "
893 test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms "
894
895 reorder_delay=$((tc_delay / 4))
896
897 if [ -z "${tc_reorder}" ]; then
898 reorder1=$((RANDOM%10))
899 reorder1=$((100 - reorder1))
900 reorder2=$((RANDOM%100))
901
902 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then
903 tc_reorder="reorder ${reorder1}% ${reorder2}%"
904 tc_info+="$tc_reorder with delay ${reorder_delay}ms "
905 fi
906 elif [ "$tc_reorder" = "0" ];then
907 tc_reorder=""
908 elif [ "$reorder_delay" -gt 0 ];then
909 # reordering requires some delay
910 tc_reorder="reorder $tc_reorder"
911 tc_info+="$tc_reorder with delay ${reorder_delay}ms "
912 fi
913
914 mptcp_lib_pr_info "Using ${tc_info}on ns3eth4"
915
916 tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder
917
918 TEST_GROUP="loopback v4"
919 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1
920 stop_if_error "Could not even run loopback test"
921
922 TEST_GROUP="loopback v6"
923 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1
924 stop_if_error "Could not even run loopback v6 test"
925
926 TEST_GROUP="multihosts"
927 for sender in $ns1 $ns2 $ns3 $ns4;do
928 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test
929 # mptcp syncookie support.
930 if [ $sender = $ns1 ]; then
931 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2
932 else
933 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1
934 fi
935
936 run_tests "$ns1" $sender 10.0.1.1
937 run_tests "$ns1" $sender dead:beef:1::1
938
939 run_tests "$ns2" $sender 10.0.1.2
940 run_tests "$ns2" $sender dead:beef:1::2
941 run_tests "$ns2" $sender 10.0.2.1
942 run_tests "$ns2" $sender dead:beef:2::1
943
944 run_tests "$ns3" $sender 10.0.2.2
945 run_tests "$ns3" $sender dead:beef:2::2
946 run_tests "$ns3" $sender 10.0.3.2
947 run_tests "$ns3" $sender dead:beef:3::2
948
949 run_tests "$ns4" $sender 10.0.3.1
950 run_tests "$ns4" $sender dead:beef:3::1
951
952 log_if_error "Tests with $sender as a sender have failed"
953 done
954
955 run_tests_peekmode "saveWithPeek"
956 run_tests_peekmode "saveAfterPeek"
957 log_if_error "Tests with peek mode have failed"
958
959 # MPTFO (MultiPath TCP Fatopen tests)
960 run_tests_mptfo
961 log_if_error "Tests with MPTFO have failed"
962
963 # connect to ns4 ip address, ns2 should intercept/proxy
964 run_test_transparent 10.0.3.1 "tproxy ipv4"
965 run_test_transparent dead:beef:3::1 "tproxy ipv6"
966 log_if_error "Tests with tproxy have failed"
967
968 run_tests_disconnect
969 log_if_error "Tests of the full disconnection have failed"
970
971 display_time
972 mptcp_lib_result_print_all_tap
973 exit ${final_ret}
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