1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4. "$(dirname "${0}")/mptcp_lib.sh" 5 6time_start=$(date +%s) 7 8optstring="S:R:d:e:l:r:h4cm:f:tC" 9ret=0 10sin="" 11sout="" 12cin_disconnect="" 13cin="" 14cout="" 15ksft_skip=4 16capture=false 17timeout_poll=30 18timeout_test=$((timeout_poll * 2 + 1)) 19ipv6=true 20ethtool_random_on=true 21tc_delay="$((RANDOM%50))" 22tc_loss=$((RANDOM%101)) 23testmode="" 24sndbuf=0 25rcvbuf=0 26options_log=true 27do_tcp=0 28checksum=false 29filesize=0 30connect_per_transfer=1 31 32if [ $tc_loss -eq 100 ];then 33 tc_loss=1% 34elif [ $tc_loss -ge 10 ]; then 35 tc_loss=0.$tc_loss% 36elif [ $tc_loss -ge 1 ]; then 37 tc_loss=0.0$tc_loss% 38else 39 tc_loss="" 40fi 41 42usage() { 43 echo "Usage: $0 [ -a ]" 44 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" 45 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" 46 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" 47 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" 48 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" 49 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" 50 echo -e "\t-f: size of file to transfer in bytes (default random)" 51 echo -e "\t-S: set sndbuf value (default: use kernel default)" 52 echo -e "\t-R: set rcvbuf value (default: use kernel default)" 53 echo -e "\t-m: test mode (poll, sendfile; default: poll)" 54 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)" 55 echo -e "\t-C: enable the MPTCP data checksum" 56} 57 58while getopts "$optstring" option;do 59 case "$option" in 60 "h") 61 usage $0 62 exit 0 63 ;; 64 "d") 65 if [ $OPTARG -ge 0 ];then 66 tc_delay="$OPTARG" 67 else 68 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2 69 exit 1 70 fi 71 ;; 72 "e") 73 ethtool_args="$ethtool_args $OPTARG off" 74 ethtool_random_on=false 75 ;; 76 "l") 77 tc_loss="$OPTARG" 78 ;; 79 "r") 80 tc_reorder="$OPTARG" 81 ;; 82 "4") 83 ipv6=false 84 ;; 85 "c") 86 capture=true 87 ;; 88 "S") 89 if [ $OPTARG -ge 0 ];then 90 sndbuf="$OPTARG" 91 else 92 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2 93 exit 1 94 fi 95 ;; 96 "R") 97 if [ $OPTARG -ge 0 ];then 98 rcvbuf="$OPTARG" 99 else 100 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2 101 exit 1 102 fi 103 ;; 104 "m") 105 testmode="$OPTARG" 106 ;; 107 "f") 108 filesize="$OPTARG" 109 ;; 110 "t") 111 do_tcp=$((do_tcp+1)) 112 ;; 113 "C") 114 checksum=true 115 ;; 116 "?") 117 usage $0 118 exit 1 119 ;; 120 esac 121done 122 123sec=$(date +%s) 124rndh=$(printf %x $sec)-$(mktemp -u XXXXXX) 125ns1="ns1-$rndh" 126ns2="ns2-$rndh" 127ns3="ns3-$rndh" 128ns4="ns4-$rndh" 129 130TEST_COUNT=0 131 132cleanup() 133{ 134 rm -f "$cin_disconnect" "$cout_disconnect" 135 rm -f "$cin" "$cout" 136 rm -f "$sin" "$sout" 137 rm -f "$capout" 138 139 local netns 140 for netns in "$ns1" "$ns2" "$ns3" "$ns4";do 141 ip netns del $netns 142 rm -f /tmp/$netns.{nstat,out} 143 done 144} 145 146mptcp_lib_check_mptcp 147mptcp_lib_check_kallsyms 148 149ip -Version > /dev/null 2>&1 150if [ $? -ne 0 ];then 151 echo "SKIP: Could not run test without ip tool" 152 exit $ksft_skip 153fi 154 155sin=$(mktemp) 156sout=$(mktemp) 157cin=$(mktemp) 158cout=$(mktemp) 159capout=$(mktemp) 160cin_disconnect="$cin".disconnect 161cout_disconnect="$cout".disconnect 162trap cleanup EXIT 163 164for i in "$ns1" "$ns2" "$ns3" "$ns4";do 165 ip netns add $i || exit $ksft_skip 166 ip -net $i link set lo up 167done 168 169# "$ns1" ns2 ns3 ns4 170# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 171# - drop 1% -> reorder 25% 172# <- TSO off - 173 174ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 175ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 176ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 177 178ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 179ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 180 181ip -net "$ns1" link set ns1eth2 up 182ip -net "$ns1" route add default via 10.0.1.2 183ip -net "$ns1" route add default via dead:beef:1::2 184 185ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 186ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 187ip -net "$ns2" link set ns2eth1 up 188 189ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 190ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 191ip -net "$ns2" link set ns2eth3 up 192ip -net "$ns2" route add default via 10.0.2.2 193ip -net "$ns2" route add default via dead:beef:2::2 194ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 195ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 196 197ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 198ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 199ip -net "$ns3" link set ns3eth2 up 200 201ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 202ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 203ip -net "$ns3" link set ns3eth4 up 204ip -net "$ns3" route add default via 10.0.2.1 205ip -net "$ns3" route add default via dead:beef:2::1 206ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 207ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 208 209ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 210ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 211ip -net "$ns4" link set ns4eth3 up 212ip -net "$ns4" route add default via 10.0.3.2 213ip -net "$ns4" route add default via dead:beef:3::2 214 215if $checksum; then 216 for i in "$ns1" "$ns2" "$ns3" "$ns4";do 217 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1 218 done 219fi 220 221set_ethtool_flags() { 222 local ns="$1" 223 local dev="$2" 224 local flags="$3" 225 226 ip netns exec $ns ethtool -K $dev $flags 2>/dev/null 227 [ $? -eq 0 ] && echo "INFO: set $ns dev $dev: ethtool -K $flags" 228} 229 230set_random_ethtool_flags() { 231 local flags="" 232 local r=$RANDOM 233 234 local pick1=$((r & 1)) 235 local pick2=$((r & 2)) 236 local pick3=$((r & 4)) 237 238 [ $pick1 -ne 0 ] && flags="tso off" 239 [ $pick2 -ne 0 ] && flags="$flags gso off" 240 [ $pick3 -ne 0 ] && flags="$flags gro off" 241 242 [ -z "$flags" ] && return 243 244 set_ethtool_flags "$1" "$2" "$flags" 245} 246 247if $ethtool_random_on;then 248 set_random_ethtool_flags "$ns3" ns3eth2 249 set_random_ethtool_flags "$ns4" ns4eth3 250else 251 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 252 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 253fi 254 255print_file_err() 256{ 257 ls -l "$1" 1>&2 258 echo "Trailing bytes are: " 259 tail -c 27 "$1" 260} 261 262check_transfer() 263{ 264 local in=$1 265 local out=$2 266 local what=$3 267 268 cmp "$in" "$out" > /dev/null 2>&1 269 if [ $? -ne 0 ] ;then 270 echo "[ FAIL ] $what does not match (in, out):" 271 print_file_err "$in" 272 print_file_err "$out" 273 274 return 1 275 fi 276 277 return 0 278} 279 280check_mptcp_disabled() 281{ 282 local disabled_ns 283 disabled_ns="ns_disabled-$sech-$(mktemp -u XXXXXX)" 284 ip netns add ${disabled_ns} || exit $ksft_skip 285 286 # net.mptcp.enabled should be enabled by default 287 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 288 echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]" 289 ret=1 290 return 1 291 fi 292 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 293 294 local err=0 295 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 296 grep -q "^socket: Protocol not available$" && err=1 297 ip netns delete ${disabled_ns} 298 299 if [ ${err} -eq 0 ]; then 300 echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" 301 ret=1 302 return 1 303 fi 304 305 echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" 306 return 0 307} 308 309# $1: IP address 310is_v6() 311{ 312 [ -z "${1##*:*}" ] 313} 314 315do_ping() 316{ 317 local listener_ns="$1" 318 local connector_ns="$2" 319 local connect_addr="$3" 320 local ping_args="-q -c 1" 321 322 if is_v6 "${connect_addr}"; then 323 $ipv6 || return 0 324 ping_args="${ping_args} -6" 325 fi 326 327 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null 328 if [ $? -ne 0 ] ; then 329 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 330 ret=1 331 332 return 1 333 fi 334 335 return 0 336} 337 338# $1: ns, $2: MIB counter 339get_mib_counter() 340{ 341 local listener_ns="${1}" 342 local mib="${2}" 343 344 # strip the header 345 ip netns exec "${listener_ns}" \ 346 nstat -z -a "${mib}" | \ 347 tail -n+2 | \ 348 while read a count c rest; do 349 echo $count 350 done 351} 352 353# $1: ns, $2: port 354wait_local_port_listen() 355{ 356 local listener_ns="${1}" 357 local port="${2}" 358 359 local port_hex i 360 361 port_hex="$(printf "%04X" "${port}")" 362 for i in $(seq 10); do 363 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ 364 awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && 365 break 366 sleep 0.1 367 done 368} 369 370do_transfer() 371{ 372 local listener_ns="$1" 373 local connector_ns="$2" 374 local cl_proto="$3" 375 local srv_proto="$4" 376 local connect_addr="$5" 377 local local_addr="$6" 378 local extra_args="$7" 379 380 local port 381 port=$((10000+$TEST_COUNT)) 382 TEST_COUNT=$((TEST_COUNT+1)) 383 384 if [ "$rcvbuf" -gt 0 ]; then 385 extra_args="$extra_args -R $rcvbuf" 386 fi 387 388 if [ "$sndbuf" -gt 0 ]; then 389 extra_args="$extra_args -S $sndbuf" 390 fi 391 392 if [ -n "$testmode" ]; then 393 extra_args="$extra_args -m $testmode" 394 fi 395 396 if [ -n "$extra_args" ] && $options_log; then 397 echo "INFO: extra options: $extra_args" 398 fi 399 options_log=false 400 401 :> "$cout" 402 :> "$sout" 403 :> "$capout" 404 405 local addr_port 406 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 407 printf "%.3s %-5s -> %.3s (%-20s) %-5s\t" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto} 408 409 if $capture; then 410 local capuser 411 if [ -z $SUDO_USER ] ; then 412 capuser="" 413 else 414 capuser="-Z $SUDO_USER" 415 fi 416 417 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 418 local capopt="-i any -s 65535 -B 32768 ${capuser}" 419 420 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 421 local cappid_listener=$! 422 423 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 424 local cappid_connector=$! 425 426 sleep 1 427 fi 428 429 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 430 nstat -n 431 if [ ${listener_ns} != ${connector_ns} ]; then 432 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 433 nstat -n 434 fi 435 436 local stat_synrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 437 local stat_ackrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 438 local stat_cookietx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 439 local stat_cookierx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 440 local stat_csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") 441 local stat_csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") 442 443 timeout ${timeout_test} \ 444 ip netns exec ${listener_ns} \ 445 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 446 $extra_args $local_addr < "$sin" > "$sout" & 447 local spid=$! 448 449 wait_local_port_listen "${listener_ns}" "${port}" 450 451 local start 452 start=$(date +%s%3N) 453 timeout ${timeout_test} \ 454 ip netns exec ${connector_ns} \ 455 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 456 $extra_args $connect_addr < "$cin" > "$cout" & 457 local cpid=$! 458 459 wait $cpid 460 local retc=$? 461 wait $spid 462 local rets=$? 463 464 local stop 465 stop=$(date +%s%3N) 466 467 if $capture; then 468 sleep 1 469 kill ${cappid_listener} 470 kill ${cappid_connector} 471 fi 472 473 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 474 nstat | grep Tcp > /tmp/${listener_ns}.out 475 if [ ${listener_ns} != ${connector_ns} ]; then 476 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 477 nstat | grep Tcp > /tmp/${connector_ns}.out 478 fi 479 480 local duration 481 duration=$((stop-start)) 482 printf "(duration %05sms) " "${duration}" 483 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 484 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 485 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 486 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 487 cat /tmp/${listener_ns}.out 488 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 489 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 490 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 491 492 echo 493 cat "$capout" 494 return 1 495 fi 496 497 check_transfer $sin $cout "file received by client" 498 retc=$? 499 check_transfer $cin $sout "file received by server" 500 rets=$? 501 502 local stat_synrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 503 local stat_ackrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 504 local stat_cookietx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 505 local stat_cookierx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 506 local stat_ooo_now=$(get_mib_counter "${listener_ns}" "TcpExtTCPOFOQueue") 507 508 expect_synrx=$((stat_synrx_last_l)) 509 expect_ackrx=$((stat_ackrx_last_l)) 510 511 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 512 cookies=${cookies##*=} 513 514 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 515 expect_synrx=$((stat_synrx_last_l+$connect_per_transfer)) 516 expect_ackrx=$((stat_ackrx_last_l+$connect_per_transfer)) 517 fi 518 519 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 520 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ 521 "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 522 retc=1 523 fi 524 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} -a ${stat_ooo_now} -eq 0 ]; then 525 if [ ${stat_ooo_now} -eq 0 ]; then 526 printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ 527 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 528 rets=1 529 else 530 printf "[ Note ] fallback due to TCP OoO" 531 fi 532 fi 533 534 if $checksum; then 535 local csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") 536 local csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") 537 538 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 539 if [ $csum_err_s_nr -gt 0 ]; then 540 printf "[ FAIL ]\nserver got $csum_err_s_nr data checksum error[s]" 541 rets=1 542 fi 543 544 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 545 if [ $csum_err_c_nr -gt 0 ]; then 546 printf "[ FAIL ]\nclient got $csum_err_c_nr data checksum error[s]" 547 retc=1 548 fi 549 fi 550 551 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 552 printf "[ OK ]" 553 fi 554 555 if [ $cookies -eq 2 ];then 556 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 557 printf " WARN: CookieSent: did not advance" 558 fi 559 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 560 printf " WARN: CookieRecv: did not advance" 561 fi 562 else 563 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 564 printf " WARN: CookieSent: changed" 565 fi 566 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 567 printf " WARN: CookieRecv: changed" 568 fi 569 fi 570 571 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 572 printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \ 573 "${expect_synrx}" "${stat_synrx_now_l}" 574 fi 575 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 576 printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \ 577 "${expect_ackrx}" "${stat_ackrx_now_l}" 578 fi 579 580 echo 581 cat "$capout" 582 [ $retc -eq 0 ] && [ $rets -eq 0 ] 583} 584 585make_file() 586{ 587 local name=$1 588 local who=$2 589 local SIZE=$filesize 590 local ksize 591 local rem 592 593 if [ $SIZE -eq 0 ]; then 594 local MAXSIZE=$((1024 * 1024 * 8)) 595 local MINSIZE=$((1024 * 256)) 596 597 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 598 fi 599 600 ksize=$((SIZE / 1024)) 601 rem=$((SIZE - (ksize * 1024))) 602 603 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 604 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 605 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 606 607 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 608} 609 610run_tests_lo() 611{ 612 local listener_ns="$1" 613 local connector_ns="$2" 614 local connect_addr="$3" 615 local loopback="$4" 616 local extra_args="$5" 617 local lret=0 618 619 # skip if test programs are running inside same netns for subsequent runs. 620 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 621 return 0 622 fi 623 624 # skip if we don't want v6 625 if ! $ipv6 && is_v6 "${connect_addr}"; then 626 return 0 627 fi 628 629 local local_addr 630 if is_v6 "${connect_addr}"; then 631 local_addr="::" 632 else 633 local_addr="0.0.0.0" 634 fi 635 636 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 637 ${connect_addr} ${local_addr} "${extra_args}" 638 lret=$? 639 if [ $lret -ne 0 ]; then 640 ret=$lret 641 return 1 642 fi 643 644 if [ $do_tcp -eq 0 ]; then 645 # don't bother testing fallback tcp except for loopback case. 646 if [ ${listener_ns} != ${connector_ns} ]; then 647 return 0 648 fi 649 fi 650 651 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 652 ${connect_addr} ${local_addr} "${extra_args}" 653 lret=$? 654 if [ $lret -ne 0 ]; then 655 ret=$lret 656 return 1 657 fi 658 659 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 660 ${connect_addr} ${local_addr} "${extra_args}" 661 lret=$? 662 if [ $lret -ne 0 ]; then 663 ret=$lret 664 return 1 665 fi 666 667 if [ $do_tcp -gt 1 ] ;then 668 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 669 ${connect_addr} ${local_addr} "${extra_args}" 670 lret=$? 671 if [ $lret -ne 0 ]; then 672 ret=$lret 673 return 1 674 fi 675 fi 676 677 return 0 678} 679 680run_tests() 681{ 682 run_tests_lo $1 $2 $3 0 683} 684 685run_test_transparent() 686{ 687 local connect_addr="$1" 688 local msg="$2" 689 690 local connector_ns="$ns1" 691 local listener_ns="$ns2" 692 local lret=0 693 local r6flag="" 694 695 # skip if we don't want v6 696 if ! $ipv6 && is_v6 "${connect_addr}"; then 697 return 0 698 fi 699 700 # IP(V6)_TRANSPARENT has been added after TOS support which came with 701 # the required infrastructure in MPTCP sockopt code. To support TOS, the 702 # following function has been exported (T). Not great but better than 703 # checking for a specific kernel version. 704 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 705 echo "INFO: ${msg} not supported by the kernel: SKIP" 706 return 707 fi 708 709ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 710flush ruleset 711table inet mangle { 712 chain divert { 713 type filter hook prerouting priority -150; 714 715 meta l4proto tcp socket transparent 1 meta mark set 1 accept 716 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 717 } 718} 719EOF 720 if [ $? -ne 0 ]; then 721 echo "SKIP: $msg, could not load nft ruleset" 722 mptcp_lib_fail_if_expected_feature "nft rules" 723 return 724 fi 725 726 local local_addr 727 if is_v6 "${connect_addr}"; then 728 local_addr="::" 729 r6flag="-6" 730 else 731 local_addr="0.0.0.0" 732 fi 733 734 ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100 735 if [ $? -ne 0 ]; then 736 ip netns exec "$listener_ns" nft flush ruleset 737 echo "SKIP: $msg, ip $r6flag rule failed" 738 mptcp_lib_fail_if_expected_feature "ip rule" 739 return 740 fi 741 742 ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100 743 if [ $? -ne 0 ]; then 744 ip netns exec "$listener_ns" nft flush ruleset 745 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 746 echo "SKIP: $msg, ip route add local $local_addr failed" 747 mptcp_lib_fail_if_expected_feature "ip route" 748 return 749 fi 750 751 echo "INFO: test $msg" 752 753 TEST_COUNT=10000 754 local extra_args="-o TRANSPARENT" 755 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 756 ${connect_addr} ${local_addr} "${extra_args}" 757 lret=$? 758 759 ip netns exec "$listener_ns" nft flush ruleset 760 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 761 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 762 763 if [ $lret -ne 0 ]; then 764 echo "FAIL: $msg, mptcp connection error" 1>&2 765 ret=$lret 766 return 1 767 fi 768 769 echo "PASS: $msg" 770 return 0 771} 772 773run_tests_peekmode() 774{ 775 local peekmode="$1" 776 777 echo "INFO: with peek mode: ${peekmode}" 778 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 779 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 780} 781 782run_tests_disconnect() 783{ 784 local peekmode="$1" 785 local old_cin=$cin 786 local old_sin=$sin 787 788 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 789 echo "INFO: Full disconnect not supported: SKIP" 790 return 791 fi 792 793 cat $cin $cin $cin > "$cin".disconnect 794 795 # force do_transfer to cope with the multiple tranmissions 796 sin="$cin.disconnect" 797 sin_disconnect=$old_sin 798 cin="$cin.disconnect" 799 cin_disconnect="$old_cin" 800 connect_per_transfer=3 801 802 echo "INFO: disconnect" 803 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 804 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 805 806 # restore previous status 807 sin=$old_sin 808 sin_disconnect="$cout".disconnect 809 cin=$old_cin 810 cin_disconnect="$cin".disconnect 811 connect_per_transfer=1 812} 813 814display_time() 815{ 816 time_end=$(date +%s) 817 time_run=$((time_end-time_start)) 818 819 echo "Time: ${time_run} seconds" 820} 821 822stop_if_error() 823{ 824 local msg="$1" 825 826 if [ ${ret} -ne 0 ]; then 827 echo "FAIL: ${msg}" 1>&2 828 display_time 829 exit ${ret} 830 fi 831} 832 833make_file "$cin" "client" 834make_file "$sin" "server" 835 836check_mptcp_disabled 837 838stop_if_error "The kernel configuration is not valid for MPTCP" 839 840echo "INFO: validating network environment with pings" 841for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 842 do_ping "$ns1" $sender 10.0.1.1 843 do_ping "$ns1" $sender dead:beef:1::1 844 845 do_ping "$ns2" $sender 10.0.1.2 846 do_ping "$ns2" $sender dead:beef:1::2 847 do_ping "$ns2" $sender 10.0.2.1 848 do_ping "$ns2" $sender dead:beef:2::1 849 850 do_ping "$ns3" $sender 10.0.2.2 851 do_ping "$ns3" $sender dead:beef:2::2 852 do_ping "$ns3" $sender 10.0.3.2 853 do_ping "$ns3" $sender dead:beef:3::2 854 855 do_ping "$ns4" $sender 10.0.3.1 856 do_ping "$ns4" $sender dead:beef:3::1 857done 858 859stop_if_error "Could not even run ping tests" 860 861[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 862echo -n "INFO: Using loss of $tc_loss " 863test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " 864 865reorder_delay=$(($tc_delay / 4)) 866 867if [ -z "${tc_reorder}" ]; then 868 reorder1=$((RANDOM%10)) 869 reorder1=$((100 - reorder1)) 870 reorder2=$((RANDOM%100)) 871 872 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 873 tc_reorder="reorder ${reorder1}% ${reorder2}%" 874 echo -n "$tc_reorder with delay ${reorder_delay}ms " 875 fi 876elif [ "$tc_reorder" = "0" ];then 877 tc_reorder="" 878elif [ "$reorder_delay" -gt 0 ];then 879 # reordering requires some delay 880 tc_reorder="reorder $tc_reorder" 881 echo -n "$tc_reorder with delay ${reorder_delay}ms " 882fi 883 884echo "on ns3eth4" 885 886tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 887 888run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 889stop_if_error "Could not even run loopback test" 890 891run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 892stop_if_error "Could not even run loopback v6 test" 893 894for sender in $ns1 $ns2 $ns3 $ns4;do 895 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 896 # mptcp syncookie support. 897 if [ $sender = $ns1 ]; then 898 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 899 else 900 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 901 fi 902 903 run_tests "$ns1" $sender 10.0.1.1 904 run_tests "$ns1" $sender dead:beef:1::1 905 906 run_tests "$ns2" $sender 10.0.1.2 907 run_tests "$ns2" $sender dead:beef:1::2 908 run_tests "$ns2" $sender 10.0.2.1 909 run_tests "$ns2" $sender dead:beef:2::1 910 911 run_tests "$ns3" $sender 10.0.2.2 912 run_tests "$ns3" $sender dead:beef:2::2 913 run_tests "$ns3" $sender 10.0.3.2 914 run_tests "$ns3" $sender dead:beef:3::2 915 916 run_tests "$ns4" $sender 10.0.3.1 917 run_tests "$ns4" $sender dead:beef:3::1 918 919 stop_if_error "Tests with $sender as a sender have failed" 920done 921 922run_tests_peekmode "saveWithPeek" 923run_tests_peekmode "saveAfterPeek" 924stop_if_error "Tests with peek mode have failed" 925 926# connect to ns4 ip address, ns2 should intercept/proxy 927run_test_transparent 10.0.3.1 "tproxy ipv4" 928run_test_transparent dead:beef:3::1 "tproxy ipv6" 929stop_if_error "Tests with tproxy have failed" 930 931run_tests_disconnect 932 933display_time 934exit $ret 935