974 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03 4# Double quotes to prevent globbing and word splitting is recommended in new5# code but we accept it, especially because there were too many before having6# address all other issues detected by shellcheck.7#shellcheck disable=SC20868 9. "$(dirname "${0}")/mptcp_lib.sh"10 11time_start=$(date +%s)12 13optstring="S:R:d:e:l:r:h4cm:f:tC"14ret=015final_ret=016sin=""17sout=""18cin_disconnect=""19cin=""20cout=""21capture=false22timeout_poll=3023timeout_test=$((timeout_poll * 2 + 1))24ipv6=true25ethtool_random_on=true26tc_delay="$((RANDOM%50))"27tc_loss=$((RANDOM%101))28testmode=""29sndbuf=030rcvbuf=031options_log=true32do_tcp=033checksum=false34filesize=035connect_per_transfer=136port=$((10000 - 1))37 38if [ $tc_loss -eq 100 ];then39 tc_loss=1%40elif [ $tc_loss -ge 10 ]; then41 tc_loss=0.$tc_loss%42elif [ $tc_loss -ge 1 ]; then43 tc_loss=0.0$tc_loss%44else45 tc_loss=""46fi47 48usage() {49 echo "Usage: $0 [ -a ]"50 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)"51 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)"52 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)"53 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)"54 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)"55 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)"56 echo -e "\t-f: size of file to transfer in bytes (default random)"57 echo -e "\t-S: set sndbuf value (default: use kernel default)"58 echo -e "\t-R: set rcvbuf value (default: use kernel default)"59 echo -e "\t-m: test mode (poll, sendfile; default: poll)"60 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)"61 echo -e "\t-C: enable the MPTCP data checksum"62}63 64while getopts "$optstring" option;do65 case "$option" in66 "h")67 usage $068 exit ${KSFT_PASS}69 ;;70 "d")71 if [ $OPTARG -ge 0 ];then72 tc_delay="$OPTARG"73 else74 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&275 exit ${KSFT_FAIL}76 fi77 ;;78 "e")79 ethtool_args="$ethtool_args $OPTARG off"80 ethtool_random_on=false81 ;;82 "l")83 tc_loss="$OPTARG"84 ;;85 "r")86 tc_reorder="$OPTARG"87 ;;88 "4")89 ipv6=false90 ;;91 "c")92 capture=true93 ;;94 "S")95 if [ $OPTARG -ge 0 ];then96 sndbuf="$OPTARG"97 else98 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&299 exit ${KSFT_FAIL}100 fi101 ;;102 "R")103 if [ $OPTARG -ge 0 ];then104 rcvbuf="$OPTARG"105 else106 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2107 exit ${KSFT_FAIL}108 fi109 ;;110 "m")111 testmode="$OPTARG"112 ;;113 "f")114 filesize="$OPTARG"115 ;;116 "t")117 do_tcp=$((do_tcp+1))118 ;;119 "C")120 checksum=true121 ;;122 "?")123 usage $0124 exit ${KSFT_FAIL}125 ;;126 esac127done128 129ns1=""130ns2=""131ns3=""132ns4=""133 134TEST_GROUP=""135 136# This function is used in the cleanup trap137#shellcheck disable=SC2317138cleanup()139{140 rm -f "$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 148mptcp_lib_check_mptcp149mptcp_lib_check_kallsyms150mptcp_lib_check_tools ip tc151 152sin=$(mktemp)153sout=$(mktemp)154cin=$(mktemp)155cout=$(mktemp)156capout=$(mktemp)157cin_disconnect="$cin".disconnect158cout_disconnect="$cout".disconnect159trap cleanup EXIT160 161mptcp_lib_ns_init ns1 ns2 ns3 ns4162 163# "$ns1" ns2 ns3 ns4164# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3165# - drop 1% -> reorder 25%166# <- TSO off -167 168ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2"169ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3"170ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4"171 172ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2173ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad174 175ip -net "$ns1" link set ns1eth2 up176ip -net "$ns1" route add default via 10.0.1.2177ip -net "$ns1" route add default via dead:beef:1::2178 179ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1180ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad181ip -net "$ns2" link set ns2eth1 up182 183ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3184ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad185ip -net "$ns2" link set ns2eth3 up186ip -net "$ns2" route add default via 10.0.2.2187ip -net "$ns2" route add default via dead:beef:2::2188ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1189ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1190 191ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2192ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad193ip -net "$ns3" link set ns3eth2 up194 195ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4196ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad197ip -net "$ns3" link set ns3eth4 up198ip -net "$ns3" route add default via 10.0.2.1199ip -net "$ns3" route add default via dead:beef:2::1200ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1201ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1202 203ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3204ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad205ip -net "$ns4" link set ns4eth3 up206ip -net "$ns4" route add default via 10.0.3.2207ip -net "$ns4" route add default via dead:beef:3::2208 209if $checksum; then210 for i in "$ns1" "$ns2" "$ns3" "$ns4";do211 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1212 done213fi214 215set_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; then221 mptcp_lib_pr_info "set $ns dev $dev: ethtool -K $flags"222 fi223}224 225set_random_ethtool_flags() {226 local flags=""227 local r=$RANDOM228 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" ] && return238 239 set_ethtool_flags "$1" "$2" "$flags"240}241 242if $ethtool_random_on;then243 set_random_ethtool_flags "$ns3" ns3eth2244 set_random_ethtool_flags "$ns4" ns4eth3245else246 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args"247 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args"248fi249 250print_larger_title() {251 # here we don't have the time, a bit longer for the alignment252 MPTCP_LIB_TEST_FORMAT="%02u %-69s" \253 mptcp_lib_print_title "${@}"254}255 256check_mptcp_disabled()257{258 local disabled_ns259 mptcp_lib_ns_init disabled_ns260 261 print_larger_title "New MPTCP socket can be blocked via sysctl"262 263 # mainly to cover more code264 if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then265 mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs"266 mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs"267 ret=${KSFT_FAIL}268 return 1269 fi270 271 # net.mptcp.enabled should be enabled by default272 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then273 mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default"274 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default"275 ret=${KSFT_FAIL}276 return 1277 fi278 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0279 280 local err=0281 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$" && err=1283 mptcp_lib_ns_exit "${disabled_ns}"284 285 if [ ${err} -eq 0 ]; then286 mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl"287 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl"288 ret=${KSFT_FAIL}289 return 1290 fi291 292 mptcp_lib_pr_ok293 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl"294 return 0295}296 297do_ping()298{299 local listener_ns="$1"300 local connector_ns="$2"301 local connect_addr="$3"302 local ping_args="-q -c 1"303 local rc=0304 305 if mptcp_lib_is_v6 "${connect_addr}"; then306 $ipv6 || return 0307 ping_args="${ping_args} -6"308 fi309 310 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1311 312 if [ $rc -ne 0 ] ; then313 mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity"314 ret=${KSFT_FAIL}315 316 return 1317 fi318 319 return 0320}321 322do_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 ]; then335 extra_args+=" -R $rcvbuf"336 fi337 338 if [ "$sndbuf" -gt 0 ]; then339 extra_args+=" -S $sndbuf"340 fi341 342 if [ -n "$testmode" ]; then343 extra_args+=" -m $testmode"344 fi345 346 if [ -n "$extra_args" ] && $options_log; then347 mptcp_lib_pr_info "extra options: $extra_args"348 fi349 options_log=false350 351 :> "$cout"352 :> "$sout"353 :> "$capout"354 355 local addr_port356 addr_port=$(printf "%s:%d" ${connect_addr} ${port})357 local pretty_title358 pretty_title="$(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 $capture; then364 local capuser365 local rndh="${connector_ns:4}"366 if [ -z $SUDO_USER ] ; then367 capuser=""368 else369 capuser="-Z $SUDO_USER"370 fi371 372 local capfile="${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 1382 fi383 384 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \385 nstat -n386 if [ ${listener_ns} != ${connector_ns} ]; then387 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \388 nstat -n389 fi390 391 local stat_synrx_last_l392 local stat_ackrx_last_l393 local stat_cookietx_last394 local stat_cookierx_last395 local stat_csum_err_s396 local stat_csum_err_c397 local stat_tcpfb_last_l398 stat_synrx_last_l=$(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 start415 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 $cpid423 local retc=$?424 wait $spid425 local rets=$?426 427 local stop428 stop=$(date +%s%3N)429 430 if $capture; then431 sleep 1432 kill ${cappid_listener}433 kill ${cappid_connector}434 fi435 436 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \437 nstat | grep Tcp > /tmp/${listener_ns}.out438 if [ ${listener_ns} != ${connector_ns} ]; then439 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \440 nstat | grep Tcp > /tmp/${connector_ns}.out441 fi442 443 local duration444 duration=$((stop-start))445 printf "(duration %05sms) " "${duration}"446 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then447 mptcp_lib_pr_fail "client exit code $retc, server $rets"448 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2449 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port"450 cat /tmp/${listener_ns}.out451 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2452 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port"453 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out454 455 echo456 cat "$capout"457 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}"458 return 1459 fi460 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_l468 local stat_ackrx_now_l469 local stat_cookietx_now470 local stat_cookierx_now471 local stat_ooo_now472 local stat_tcpfb_now_l473 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" ] && [ ${srv_proto} = "MPTCP" ]; then487 expect_synrx=$((stat_synrx_last_l+connect_per_transfer))488 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer))489 fi490 491 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then492 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx_now_l})" \493 "than expected (${expect_synrx})"494 retc=1495 fi496 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then497 if [ ${stat_ooo_now} -eq 0 ]; then498 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx_now_l})" \499 "than expected (${expect_ackrx})"500 rets=1501 else502 extra+=" [ Note ] fallback due to TCP OoO"503 fi504 fi505 506 if $checksum; then507 local csum_err_s508 local csum_err_c509 csum_err_s=$(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 ]; then514 mptcp_lib_pr_fail "server got ${csum_err_s_nr} data checksum error[s]"515 rets=1516 fi517 518 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c))519 if [ $csum_err_c_nr -gt 0 ]; then520 mptcp_lib_pr_fail "client got ${csum_err_c_nr} data checksum error[s]"521 retc=1522 fi523 fi524 525 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then526 mptcp_lib_pr_fail "unexpected fallback to TCP"527 rets=1528 fi529 530 if [ $cookies -eq 2 ];then531 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then532 extra+=" WARN: CookieSent: did not advance"533 fi534 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then535 extra+=" WARN: CookieRecv: did not advance"536 fi537 else538 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then539 extra+=" WARN: CookieSent: changed"540 fi541 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then542 extra+=" WARN: CookieRecv: changed"543 fi544 fi545 546 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then547 extra+=" WARN: SYNRX: expect ${expect_synrx},"548 extra+=" got ${stat_synrx_now_l} (probably retransmissions)"549 fi550 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then551 extra+=" WARN: ACKRX: expect ${expect_ackrx},"552 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)"553 fi554 555 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then556 mptcp_lib_pr_ok "${extra:1}"557 mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}"558 else559 if [ -n "${extra}" ]; then560 mptcp_lib_print_warn "${extra:1}"561 fi562 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}"563 fi564 565 cat "$capout"566 [ $retc -eq 0 ] && [ $rets -eq 0 ]567}568 569make_file()570{571 local name=$1572 local who=$2573 local SIZE=$filesize574 local ksize575 local rem576 577 if [ $SIZE -eq 0 ]; then578 local MAXSIZE=$((1024 * 1024 * 8))579 local MINSIZE=$((1024 * 256))580 581 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE))582 fi583 584 ksize=$((SIZE / 1024))585 rem=$((SIZE - (ksize * 1024)))586 587 mptcp_lib_make_file $name 1024 $ksize588 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null589 590 echo "Created $name (size $(du -b "$name")) containing data sent by $who"591}592 593run_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=0601 602 # skip if test programs are running inside same netns for subsequent runs.603 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then604 return 0605 fi606 607 # skip if we don't want v6608 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then609 return 0610 fi611 612 local local_addr613 if mptcp_lib_is_v6 "${connect_addr}"; then614 local_addr="::"615 else616 local_addr="0.0.0.0"617 fi618 619 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \620 ${connect_addr} ${local_addr} "${extra_args}"621 lret=$?622 if [ $lret -ne 0 ]; then623 ret=$lret624 return 1625 fi626 627 if [ $do_tcp -eq 0 ]; then628 # don't bother testing fallback tcp except for loopback case.629 if [ ${listener_ns} != ${connector_ns} ]; then630 return 0631 fi632 fi633 634 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \635 ${connect_addr} ${local_addr} "${extra_args}"636 lret=$?637 if [ $lret -ne 0 ]; then638 ret=$lret639 return 1640 fi641 642 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \643 ${connect_addr} ${local_addr} "${extra_args}"644 lret=$?645 if [ $lret -ne 0 ]; then646 ret=$lret647 return 1648 fi649 650 if [ $do_tcp -gt 1 ] ;then651 do_transfer ${listener_ns} ${connector_ns} TCP TCP \652 ${connect_addr} ${local_addr} "${extra_args}"653 lret=$?654 if [ $lret -ne 0 ]; then655 ret=$lret656 return 1657 fi658 fi659 660 return 0661}662 663run_tests()664{665 run_tests_lo $1 $2 $3 0666}667 668run_test_transparent()669{670 local connect_addr="$1"671 local msg="$2"672 673 local connector_ns="$ns1"674 local listener_ns="$ns2"675 local lret=0676 local r6flag=""677 678 TEST_GROUP="${msg}"679 680 # skip if we don't want v6681 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then682 return 0683 fi684 685 # IP(V6)_TRANSPARENT has been added after TOS support which came with686 # the required infrastructure in MPTCP sockopt code. To support TOS, the687 # following function has been exported (T). Not great but better than688 # checking for a specific kernel version.689 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then690 mptcp_lib_pr_skip "${msg} not supported by the kernel"691 mptcp_lib_result_skip "${TEST_GROUP}"692 return693 fi694 695 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF"696flush ruleset697table inet mangle {698 chain divert {699 type filter hook prerouting priority -150;700 701 meta l4proto tcp socket transparent 1 meta mark set 1 accept702 tcp dport 20000 tproxy to :20000 meta mark set 1 accept703 }704}705EOF706 then707 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 return711 fi712 713 local local_addr714 if mptcp_lib_is_v6 "${connect_addr}"; then715 local_addr="::"716 r6flag="-6"717 else718 local_addr="0.0.0.0"719 fi720 721 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then722 ip netns exec "$listener_ns" nft flush ruleset723 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 return727 fi728 729 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then730 ip netns exec "$listener_ns" nft flush ruleset731 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100732 mptcp_lib_pr_skip "$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 return736 fi737 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 ruleset747 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100748 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100749 750 if [ $lret -ne 0 ]; then751 mptcp_lib_pr_fail "$msg, mptcp connection error"752 ret=$lret753 return 1754 fi755 756 mptcp_lib_pr_info "$msg pass"757 return 0758}759 760run_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 ${peekmode}"768}769 770run_tests_mptfo()771{772 TEST_GROUP="MPTFO"773 774 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then775 mptcp_lib_pr_skip "TFO not supported by the kernel"776 mptcp_lib_result_skip "${TEST_GROUP}"777 return778 fi779 780 mptcp_lib_pr_info "with MPTFO start"781 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2782 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1783 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 "$ns1" sysctl -q net.ipv4.tcp_fastopen=0791 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0792 mptcp_lib_pr_info "with MPTFO end"793}794 795run_tests_disconnect()796{797 local old_cin=$cin798 local old_sin=$sin799 800 TEST_GROUP="full disconnect"801 802 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then803 mptcp_lib_pr_skip "Full disconnect not supported"804 mptcp_lib_result_skip "${TEST_GROUP}"805 return806 fi807 808 cat $cin $cin $cin > "$cin".disconnect809 810 # force do_transfer to cope with the multiple transmissions811 sin="$cin.disconnect"812 cin="$cin.disconnect"813 cin_disconnect="$old_cin"814 connect_per_transfer=3815 816 mptcp_lib_pr_info "disconnect"817 run_tests_lo "$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 $old_cin"819 820 # restore previous status821 sin=$old_sin822 cin=$old_cin823 cin_disconnect="$cin".disconnect824 connect_per_transfer=1825}826 827display_time()828{829 time_end=$(date +%s)830 time_run=$((time_end-time_start))831 832 echo "Time: ${time_run} seconds"833}834 835log_if_error()836{837 local msg="$1"838 839 if [ ${ret} -ne 0 ]; then840 mptcp_lib_pr_fail "${msg}"841 842 final_ret=${ret}843 ret=${KSFT_PASS}844 845 return ${final_ret}846 fi847}848 849stop_if_error()850{851 if ! log_if_error "${@}"; then852 display_time853 mptcp_lib_result_print_all_tap854 exit ${final_ret}855 fi856}857 858make_file "$cin" "client"859make_file "$sin" "server"860 861mptcp_lib_subtests_last_ts_reset862 863check_mptcp_disabled864 865stop_if_error "The kernel configuration is not valid for MPTCP"866 867print_larger_title "Validating network environment with pings"868for sender in "$ns1" "$ns2" "$ns3" "$ns4";do869 do_ping "$ns1" $sender 10.0.1.1870 do_ping "$ns1" $sender dead:beef:1::1871 872 do_ping "$ns2" $sender 10.0.1.2873 do_ping "$ns2" $sender dead:beef:1::2874 do_ping "$ns2" $sender 10.0.2.1875 do_ping "$ns2" $sender dead:beef:2::1876 877 do_ping "$ns3" $sender 10.0.2.2878 do_ping "$ns3" $sender dead:beef:2::2879 do_ping "$ns3" $sender 10.0.3.2880 do_ping "$ns3" $sender dead:beef:3::2881 882 do_ping "$ns4" $sender 10.0.3.1883 do_ping "$ns4" $sender dead:beef:3::1884done885 886mptcp_lib_result_code "${ret}" "ping tests"887 888stop_if_error "Could not even run ping tests"889mptcp_lib_pr_ok890 891[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms892tc_info="loss of $tc_loss "893test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms "894 895reorder_delay=$((tc_delay / 4))896 897if [ -z "${tc_reorder}" ]; then898 reorder1=$((RANDOM%10))899 reorder1=$((100 - reorder1))900 reorder2=$((RANDOM%100))901 902 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then903 tc_reorder="reorder ${reorder1}% ${reorder2}%"904 tc_info+="$tc_reorder with delay ${reorder_delay}ms "905 fi906elif [ "$tc_reorder" = "0" ];then907 tc_reorder=""908elif [ "$reorder_delay" -gt 0 ];then909 # reordering requires some delay910 tc_reorder="reorder $tc_reorder"911 tc_info+="$tc_reorder with delay ${reorder_delay}ms "912fi913 914mptcp_lib_pr_info "Using ${tc_info}on ns3eth4"915 916tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder917 918TEST_GROUP="loopback v4"919run_tests_lo "$ns1" "$ns1" 10.0.1.1 1920stop_if_error "Could not even run loopback test"921 922TEST_GROUP="loopback v6"923run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1924stop_if_error "Could not even run loopback v6 test"925 926TEST_GROUP="multihosts"927for sender in $ns1 $ns2 $ns3 $ns4;do928 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test929 # mptcp syncookie support.930 if [ $sender = $ns1 ]; then931 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2932 else933 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1934 fi935 936 run_tests "$ns1" $sender 10.0.1.1937 run_tests "$ns1" $sender dead:beef:1::1938 939 run_tests "$ns2" $sender 10.0.1.2940 run_tests "$ns2" $sender dead:beef:1::2941 run_tests "$ns2" $sender 10.0.2.1942 run_tests "$ns2" $sender dead:beef:2::1943 944 run_tests "$ns3" $sender 10.0.2.2945 run_tests "$ns3" $sender dead:beef:2::2946 run_tests "$ns3" $sender 10.0.3.2947 run_tests "$ns3" $sender dead:beef:3::2948 949 run_tests "$ns4" $sender 10.0.3.1950 run_tests "$ns4" $sender dead:beef:3::1951 952 log_if_error "Tests with $sender as a sender have failed"953done954 955run_tests_peekmode "saveWithPeek"956run_tests_peekmode "saveAfterPeek"957log_if_error "Tests with peek mode have failed"958 959# MPTFO (MultiPath TCP Fatopen tests)960run_tests_mptfo961log_if_error "Tests with MPTFO have failed"962 963# connect to ns4 ip address, ns2 should intercept/proxy964run_test_transparent 10.0.3.1 "tproxy ipv4"965run_test_transparent dead:beef:3::1 "tproxy ipv6"966log_if_error "Tests with tproxy have failed"967 968run_tests_disconnect969log_if_error "Tests of the full disconnection have failed"970 971display_time972mptcp_lib_result_print_all_tap973exit ${final_ret}974