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 "$out" 273 274 return 1 275 fi 276 277 return 0 278} 279 280check_mptcp_disabled() 281{ 282 local disabled_ns="ns_disabled-$rndh" 283 ip netns add ${disabled_ns} || exit $ksft_skip 284 285 # net.mptcp.enabled should be enabled by default 286 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 287 echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]" 288 ret=1 289 return 1 290 fi 291 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 292 293 local err=0 294 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 295 grep -q "^socket: Protocol not available$" && err=1 296 ip netns delete ${disabled_ns} 297 298 if [ ${err} -eq 0 ]; then 299 echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" 300 ret=1 301 return 1 302 fi 303 304 echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" 305 return 0 306} 307 308# $1: IP address 309is_v6() 310{ 311 [ -z "${1##*:*}" ] 312} 313 314do_ping() 315{ 316 local listener_ns="$1" 317 local connector_ns="$2" 318 local connect_addr="$3" 319 local ping_args="-q -c 1" 320 321 if is_v6 "${connect_addr}"; then 322 $ipv6 || return 0 323 ping_args="${ping_args} -6" 324 fi 325 326 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null 327 if [ $? -ne 0 ] ; then 328 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 329 ret=1 330 331 return 1 332 fi 333 334 return 0 335} 336 337# $1: ns, $2: MIB counter 338get_mib_counter() 339{ 340 local listener_ns="${1}" 341 local mib="${2}" 342 343 # strip the header 344 ip netns exec "${listener_ns}" \ 345 nstat -z -a "${mib}" | \ 346 tail -n+2 | \ 347 while read a count c rest; do 348 echo $count 349 done 350} 351 352# $1: ns, $2: port 353wait_local_port_listen() 354{ 355 local listener_ns="${1}" 356 local port="${2}" 357 358 local port_hex i 359 360 port_hex="$(printf "%04X" "${port}")" 361 for i in $(seq 10); do 362 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ 363 awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && 364 break 365 sleep 0.1 366 done 367} 368 369do_transfer() 370{ 371 local listener_ns="$1" 372 local connector_ns="$2" 373 local cl_proto="$3" 374 local srv_proto="$4" 375 local connect_addr="$5" 376 local local_addr="$6" 377 local extra_args="$7" 378 379 local port 380 port=$((10000+$TEST_COUNT)) 381 TEST_COUNT=$((TEST_COUNT+1)) 382 383 if [ "$rcvbuf" -gt 0 ]; then 384 extra_args="$extra_args -R $rcvbuf" 385 fi 386 387 if [ "$sndbuf" -gt 0 ]; then 388 extra_args="$extra_args -S $sndbuf" 389 fi 390 391 if [ -n "$testmode" ]; then 392 extra_args="$extra_args -m $testmode" 393 fi 394 395 if [ -n "$extra_args" ] && $options_log; then 396 echo "INFO: extra options: $extra_args" 397 fi 398 options_log=false 399 400 :> "$cout" 401 :> "$sout" 402 :> "$capout" 403 404 local addr_port 405 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 406 printf "%.3s %-5s -> %.3s (%-20s) %-5s\t" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto} 407 408 if $capture; then 409 local capuser 410 if [ -z $SUDO_USER ] ; then 411 capuser="" 412 else 413 capuser="-Z $SUDO_USER" 414 fi 415 416 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 417 local capopt="-i any -s 65535 -B 32768 ${capuser}" 418 419 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 420 local cappid_listener=$! 421 422 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 423 local cappid_connector=$! 424 425 sleep 1 426 fi 427 428 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 429 nstat -n 430 if [ ${listener_ns} != ${connector_ns} ]; then 431 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 432 nstat -n 433 fi 434 435 local stat_synrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 436 local stat_ackrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 437 local stat_cookietx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 438 local stat_cookierx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 439 local stat_csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") 440 local stat_csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") 441 442 timeout ${timeout_test} \ 443 ip netns exec ${listener_ns} \ 444 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 445 $extra_args $local_addr < "$sin" > "$sout" & 446 local spid=$! 447 448 wait_local_port_listen "${listener_ns}" "${port}" 449 450 local start 451 start=$(date +%s%3N) 452 timeout ${timeout_test} \ 453 ip netns exec ${connector_ns} \ 454 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 455 $extra_args $connect_addr < "$cin" > "$cout" & 456 local cpid=$! 457 458 wait $cpid 459 local retc=$? 460 wait $spid 461 local rets=$? 462 463 local stop 464 stop=$(date +%s%3N) 465 466 if $capture; then 467 sleep 1 468 kill ${cappid_listener} 469 kill ${cappid_connector} 470 fi 471 472 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 473 nstat | grep Tcp > /tmp/${listener_ns}.out 474 if [ ${listener_ns} != ${connector_ns} ]; then 475 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 476 nstat | grep Tcp > /tmp/${connector_ns}.out 477 fi 478 479 local duration 480 duration=$((stop-start)) 481 printf "(duration %05sms) " "${duration}" 482 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 483 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 484 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 485 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 486 cat /tmp/${listener_ns}.out 487 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 488 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 489 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 490 491 echo 492 cat "$capout" 493 return 1 494 fi 495 496 check_transfer $sin $cout "file received by client" 497 retc=$? 498 check_transfer $cin $sout "file received by server" 499 rets=$? 500 501 local stat_synrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 502 local stat_ackrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 503 local stat_cookietx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 504 local stat_cookierx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 505 local stat_ooo_now=$(get_mib_counter "${listener_ns}" "TcpExtTCPOFOQueue") 506 507 expect_synrx=$((stat_synrx_last_l)) 508 expect_ackrx=$((stat_ackrx_last_l)) 509 510 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 511 cookies=${cookies##*=} 512 513 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 514 expect_synrx=$((stat_synrx_last_l+$connect_per_transfer)) 515 expect_ackrx=$((stat_ackrx_last_l+$connect_per_transfer)) 516 fi 517 518 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 519 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ 520 "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 521 retc=1 522 fi 523 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} -a ${stat_ooo_now} -eq 0 ]; then 524 if [ ${stat_ooo_now} -eq 0 ]; then 525 printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ 526 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 527 rets=1 528 else 529 printf "[ Note ] fallback due to TCP OoO" 530 fi 531 fi 532 533 if $checksum; then 534 local csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") 535 local csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") 536 537 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 538 if [ $csum_err_s_nr -gt 0 ]; then 539 printf "[ FAIL ]\nserver got $csum_err_s_nr data checksum error[s]" 540 rets=1 541 fi 542 543 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 544 if [ $csum_err_c_nr -gt 0 ]; then 545 printf "[ FAIL ]\nclient got $csum_err_c_nr data checksum error[s]" 546 retc=1 547 fi 548 fi 549 550 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 551 printf "[ OK ]" 552 fi 553 554 if [ $cookies -eq 2 ];then 555 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 556 printf " WARN: CookieSent: did not advance" 557 fi 558 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 559 printf " WARN: CookieRecv: did not advance" 560 fi 561 else 562 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 563 printf " WARN: CookieSent: changed" 564 fi 565 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 566 printf " WARN: CookieRecv: changed" 567 fi 568 fi 569 570 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 571 printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \ 572 "${expect_synrx}" "${stat_synrx_now_l}" 573 fi 574 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 575 printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \ 576 "${expect_ackrx}" "${stat_ackrx_now_l}" 577 fi 578 579 echo 580 cat "$capout" 581 [ $retc -eq 0 ] && [ $rets -eq 0 ] 582} 583 584make_file() 585{ 586 local name=$1 587 local who=$2 588 local SIZE=$filesize 589 local ksize 590 local rem 591 592 if [ $SIZE -eq 0 ]; then 593 local MAXSIZE=$((1024 * 1024 * 8)) 594 local MINSIZE=$((1024 * 256)) 595 596 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 597 fi 598 599 ksize=$((SIZE / 1024)) 600 rem=$((SIZE - (ksize * 1024))) 601 602 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 603 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 604 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 605 606 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 607} 608 609run_tests_lo() 610{ 611 local listener_ns="$1" 612 local connector_ns="$2" 613 local connect_addr="$3" 614 local loopback="$4" 615 local extra_args="$5" 616 local lret=0 617 618 # skip if test programs are running inside same netns for subsequent runs. 619 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 620 return 0 621 fi 622 623 # skip if we don't want v6 624 if ! $ipv6 && is_v6 "${connect_addr}"; then 625 return 0 626 fi 627 628 local local_addr 629 if is_v6 "${connect_addr}"; then 630 local_addr="::" 631 else 632 local_addr="0.0.0.0" 633 fi 634 635 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 636 ${connect_addr} ${local_addr} "${extra_args}" 637 lret=$? 638 if [ $lret -ne 0 ]; then 639 ret=$lret 640 return 1 641 fi 642 643 if [ $do_tcp -eq 0 ]; then 644 # don't bother testing fallback tcp except for loopback case. 645 if [ ${listener_ns} != ${connector_ns} ]; then 646 return 0 647 fi 648 fi 649 650 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 651 ${connect_addr} ${local_addr} "${extra_args}" 652 lret=$? 653 if [ $lret -ne 0 ]; then 654 ret=$lret 655 return 1 656 fi 657 658 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 659 ${connect_addr} ${local_addr} "${extra_args}" 660 lret=$? 661 if [ $lret -ne 0 ]; then 662 ret=$lret 663 return 1 664 fi 665 666 if [ $do_tcp -gt 1 ] ;then 667 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 668 ${connect_addr} ${local_addr} "${extra_args}" 669 lret=$? 670 if [ $lret -ne 0 ]; then 671 ret=$lret 672 return 1 673 fi 674 fi 675 676 return 0 677} 678 679run_tests() 680{ 681 run_tests_lo $1 $2 $3 0 682} 683 684run_test_transparent() 685{ 686 local connect_addr="$1" 687 local msg="$2" 688 689 local connector_ns="$ns1" 690 local listener_ns="$ns2" 691 local lret=0 692 local r6flag="" 693 694 # skip if we don't want v6 695 if ! $ipv6 && is_v6 "${connect_addr}"; then 696 return 0 697 fi 698 699 # IP(V6)_TRANSPARENT has been added after TOS support which came with 700 # the required infrastructure in MPTCP sockopt code. To support TOS, the 701 # following function has been exported (T). Not great but better than 702 # checking for a specific kernel version. 703 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 704 echo "INFO: ${msg} not supported by the kernel: SKIP" 705 return 706 fi 707 708ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 709flush ruleset 710table inet mangle { 711 chain divert { 712 type filter hook prerouting priority -150; 713 714 meta l4proto tcp socket transparent 1 meta mark set 1 accept 715 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 716 } 717} 718EOF 719 if [ $? -ne 0 ]; then 720 echo "SKIP: $msg, could not load nft ruleset" 721 mptcp_lib_fail_if_expected_feature "nft rules" 722 return 723 fi 724 725 local local_addr 726 if is_v6 "${connect_addr}"; then 727 local_addr="::" 728 r6flag="-6" 729 else 730 local_addr="0.0.0.0" 731 fi 732 733 ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100 734 if [ $? -ne 0 ]; then 735 ip netns exec "$listener_ns" nft flush ruleset 736 echo "SKIP: $msg, ip $r6flag rule failed" 737 mptcp_lib_fail_if_expected_feature "ip rule" 738 return 739 fi 740 741 ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100 742 if [ $? -ne 0 ]; then 743 ip netns exec "$listener_ns" nft flush ruleset 744 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 745 echo "SKIP: $msg, ip route add local $local_addr failed" 746 mptcp_lib_fail_if_expected_feature "ip route" 747 return 748 fi 749 750 echo "INFO: test $msg" 751 752 TEST_COUNT=10000 753 local extra_args="-o TRANSPARENT" 754 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 755 ${connect_addr} ${local_addr} "${extra_args}" 756 lret=$? 757 758 ip netns exec "$listener_ns" nft flush ruleset 759 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 760 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 761 762 if [ $lret -ne 0 ]; then 763 echo "FAIL: $msg, mptcp connection error" 1>&2 764 ret=$lret 765 return 1 766 fi 767 768 echo "PASS: $msg" 769 return 0 770} 771 772run_tests_peekmode() 773{ 774 local peekmode="$1" 775 776 echo "INFO: with peek mode: ${peekmode}" 777 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 778 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 779} 780 781run_tests_mptfo() 782{ 783 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 784 echo "INFO: TFO not supported by the kernel: SKIP" 785 return 786 fi 787 788 echo "INFO: with MPTFO start" 789 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 790 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 791 792 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 793 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 794 795 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 796 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 797 798 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 799 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 800 echo "INFO: with MPTFO end" 801} 802 803run_tests_disconnect() 804{ 805 local old_cin=$cin 806 local old_sin=$sin 807 808 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 809 echo "INFO: Full disconnect not supported: SKIP" 810 return 811 fi 812 813 cat $cin $cin $cin > "$cin".disconnect 814 815 # force do_transfer to cope with the multiple transmissions 816 sin="$cin.disconnect" 817 cin="$cin.disconnect" 818 cin_disconnect="$old_cin" 819 connect_per_transfer=3 820 821 echo "INFO: disconnect" 822 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 823 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 824 825 # restore previous status 826 sin=$old_sin 827 cin=$old_cin 828 cin_disconnect="$cin".disconnect 829 connect_per_transfer=1 830} 831 832display_time() 833{ 834 time_end=$(date +%s) 835 time_run=$((time_end-time_start)) 836 837 echo "Time: ${time_run} seconds" 838} 839 840stop_if_error() 841{ 842 local msg="$1" 843 844 if [ ${ret} -ne 0 ]; then 845 echo "FAIL: ${msg}" 1>&2 846 display_time 847 exit ${ret} 848 fi 849} 850 851make_file "$cin" "client" 852make_file "$sin" "server" 853 854check_mptcp_disabled 855 856stop_if_error "The kernel configuration is not valid for MPTCP" 857 858echo "INFO: validating network environment with pings" 859for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 860 do_ping "$ns1" $sender 10.0.1.1 861 do_ping "$ns1" $sender dead:beef:1::1 862 863 do_ping "$ns2" $sender 10.0.1.2 864 do_ping "$ns2" $sender dead:beef:1::2 865 do_ping "$ns2" $sender 10.0.2.1 866 do_ping "$ns2" $sender dead:beef:2::1 867 868 do_ping "$ns3" $sender 10.0.2.2 869 do_ping "$ns3" $sender dead:beef:2::2 870 do_ping "$ns3" $sender 10.0.3.2 871 do_ping "$ns3" $sender dead:beef:3::2 872 873 do_ping "$ns4" $sender 10.0.3.1 874 do_ping "$ns4" $sender dead:beef:3::1 875done 876 877stop_if_error "Could not even run ping tests" 878 879[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 880echo -n "INFO: Using loss of $tc_loss " 881test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " 882 883reorder_delay=$(($tc_delay / 4)) 884 885if [ -z "${tc_reorder}" ]; then 886 reorder1=$((RANDOM%10)) 887 reorder1=$((100 - reorder1)) 888 reorder2=$((RANDOM%100)) 889 890 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 891 tc_reorder="reorder ${reorder1}% ${reorder2}%" 892 echo -n "$tc_reorder with delay ${reorder_delay}ms " 893 fi 894elif [ "$tc_reorder" = "0" ];then 895 tc_reorder="" 896elif [ "$reorder_delay" -gt 0 ];then 897 # reordering requires some delay 898 tc_reorder="reorder $tc_reorder" 899 echo -n "$tc_reorder with delay ${reorder_delay}ms " 900fi 901 902echo "on ns3eth4" 903 904tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 905 906run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 907stop_if_error "Could not even run loopback test" 908 909run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 910stop_if_error "Could not even run loopback v6 test" 911 912for sender in $ns1 $ns2 $ns3 $ns4;do 913 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 914 # mptcp syncookie support. 915 if [ $sender = $ns1 ]; then 916 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 917 else 918 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 919 fi 920 921 run_tests "$ns1" $sender 10.0.1.1 922 run_tests "$ns1" $sender dead:beef:1::1 923 924 run_tests "$ns2" $sender 10.0.1.2 925 run_tests "$ns2" $sender dead:beef:1::2 926 run_tests "$ns2" $sender 10.0.2.1 927 run_tests "$ns2" $sender dead:beef:2::1 928 929 run_tests "$ns3" $sender 10.0.2.2 930 run_tests "$ns3" $sender dead:beef:2::2 931 run_tests "$ns3" $sender 10.0.3.2 932 run_tests "$ns3" $sender dead:beef:3::2 933 934 run_tests "$ns4" $sender 10.0.3.1 935 run_tests "$ns4" $sender dead:beef:3::1 936 937 stop_if_error "Tests with $sender as a sender have failed" 938done 939 940run_tests_peekmode "saveWithPeek" 941run_tests_peekmode "saveAfterPeek" 942stop_if_error "Tests with peek mode have failed" 943 944# MPTFO (MultiPath TCP Fatopen tests) 945run_tests_mptfo 946stop_if_error "Tests with MPTFO have failed" 947 948# connect to ns4 ip address, ns2 should intercept/proxy 949run_test_transparent 10.0.3.1 "tproxy ipv4" 950run_test_transparent dead:beef:3::1 "tproxy ipv6" 951stop_if_error "Tests with tproxy have failed" 952 953run_tests_disconnect 954 955display_time 956exit $ret 957