1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4. "$(dirname "${0}")/mptcp_lib.sh" 5 6time_start=$(date +%s) 7 8optstring="S:R:d:e:l:r:h4cm:f:tC" 9ret=0 10final_ret=0 11sin="" 12sout="" 13cin_disconnect="" 14cin="" 15cout="" 16ksft_skip=4 17capture=false 18timeout_poll=30 19timeout_test=$((timeout_poll * 2 + 1)) 20ipv6=true 21ethtool_random_on=true 22tc_delay="$((RANDOM%50))" 23tc_loss=$((RANDOM%101)) 24testmode="" 25sndbuf=0 26rcvbuf=0 27options_log=true 28do_tcp=0 29checksum=false 30filesize=0 31connect_per_transfer=1 32 33if [ $tc_loss -eq 100 ];then 34 tc_loss=1% 35elif [ $tc_loss -ge 10 ]; then 36 tc_loss=0.$tc_loss% 37elif [ $tc_loss -ge 1 ]; then 38 tc_loss=0.0$tc_loss% 39else 40 tc_loss="" 41fi 42 43usage() { 44 echo "Usage: $0 [ -a ]" 45 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" 46 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" 47 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" 48 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" 49 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" 50 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" 51 echo -e "\t-f: size of file to transfer in bytes (default random)" 52 echo -e "\t-S: set sndbuf value (default: use kernel default)" 53 echo -e "\t-R: set rcvbuf value (default: use kernel default)" 54 echo -e "\t-m: test mode (poll, sendfile; default: poll)" 55 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)" 56 echo -e "\t-C: enable the MPTCP data checksum" 57} 58 59while getopts "$optstring" option;do 60 case "$option" in 61 "h") 62 usage $0 63 exit 0 64 ;; 65 "d") 66 if [ $OPTARG -ge 0 ];then 67 tc_delay="$OPTARG" 68 else 69 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2 70 exit 1 71 fi 72 ;; 73 "e") 74 ethtool_args="$ethtool_args $OPTARG off" 75 ethtool_random_on=false 76 ;; 77 "l") 78 tc_loss="$OPTARG" 79 ;; 80 "r") 81 tc_reorder="$OPTARG" 82 ;; 83 "4") 84 ipv6=false 85 ;; 86 "c") 87 capture=true 88 ;; 89 "S") 90 if [ $OPTARG -ge 0 ];then 91 sndbuf="$OPTARG" 92 else 93 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2 94 exit 1 95 fi 96 ;; 97 "R") 98 if [ $OPTARG -ge 0 ];then 99 rcvbuf="$OPTARG" 100 else 101 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2 102 exit 1 103 fi 104 ;; 105 "m") 106 testmode="$OPTARG" 107 ;; 108 "f") 109 filesize="$OPTARG" 110 ;; 111 "t") 112 do_tcp=$((do_tcp+1)) 113 ;; 114 "C") 115 checksum=true 116 ;; 117 "?") 118 usage $0 119 exit 1 120 ;; 121 esac 122done 123 124sec=$(date +%s) 125rndh=$(printf %x $sec)-$(mktemp -u XXXXXX) 126ns1="ns1-$rndh" 127ns2="ns2-$rndh" 128ns3="ns3-$rndh" 129ns4="ns4-$rndh" 130 131TEST_COUNT=0 132TEST_GROUP="" 133 134cleanup() 135{ 136 rm -f "$cin_disconnect" "$cout_disconnect" 137 rm -f "$cin" "$cout" 138 rm -f "$sin" "$sout" 139 rm -f "$capout" 140 141 local netns 142 for netns in "$ns1" "$ns2" "$ns3" "$ns4";do 143 ip netns del $netns 144 rm -f /tmp/$netns.{nstat,out} 145 done 146} 147 148mptcp_lib_check_mptcp 149mptcp_lib_check_kallsyms 150 151ip -Version > /dev/null 2>&1 152if [ $? -ne 0 ];then 153 echo "SKIP: Could not run test without ip tool" 154 exit $ksft_skip 155fi 156 157sin=$(mktemp) 158sout=$(mktemp) 159cin=$(mktemp) 160cout=$(mktemp) 161capout=$(mktemp) 162cin_disconnect="$cin".disconnect 163cout_disconnect="$cout".disconnect 164trap cleanup EXIT 165 166for i in "$ns1" "$ns2" "$ns3" "$ns4";do 167 ip netns add $i || exit $ksft_skip 168 ip -net $i link set lo up 169done 170 171# "$ns1" ns2 ns3 ns4 172# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 173# - drop 1% -> reorder 25% 174# <- TSO off - 175 176ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 177ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 178ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 179 180ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 181ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 182 183ip -net "$ns1" link set ns1eth2 up 184ip -net "$ns1" route add default via 10.0.1.2 185ip -net "$ns1" route add default via dead:beef:1::2 186 187ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 188ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 189ip -net "$ns2" link set ns2eth1 up 190 191ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 192ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 193ip -net "$ns2" link set ns2eth3 up 194ip -net "$ns2" route add default via 10.0.2.2 195ip -net "$ns2" route add default via dead:beef:2::2 196ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 197ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 198 199ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 200ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 201ip -net "$ns3" link set ns3eth2 up 202 203ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 204ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 205ip -net "$ns3" link set ns3eth4 up 206ip -net "$ns3" route add default via 10.0.2.1 207ip -net "$ns3" route add default via dead:beef:2::1 208ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 209ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 210 211ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 212ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 213ip -net "$ns4" link set ns4eth3 up 214ip -net "$ns4" route add default via 10.0.3.2 215ip -net "$ns4" route add default via dead:beef:3::2 216 217if $checksum; then 218 for i in "$ns1" "$ns2" "$ns3" "$ns4";do 219 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1 220 done 221fi 222 223set_ethtool_flags() { 224 local ns="$1" 225 local dev="$2" 226 local flags="$3" 227 228 ip netns exec $ns ethtool -K $dev $flags 2>/dev/null 229 [ $? -eq 0 ] && echo "INFO: set $ns dev $dev: ethtool -K $flags" 230} 231 232set_random_ethtool_flags() { 233 local flags="" 234 local r=$RANDOM 235 236 local pick1=$((r & 1)) 237 local pick2=$((r & 2)) 238 local pick3=$((r & 4)) 239 240 [ $pick1 -ne 0 ] && flags="tso off" 241 [ $pick2 -ne 0 ] && flags="$flags gso off" 242 [ $pick3 -ne 0 ] && flags="$flags gro off" 243 244 [ -z "$flags" ] && return 245 246 set_ethtool_flags "$1" "$2" "$flags" 247} 248 249if $ethtool_random_on;then 250 set_random_ethtool_flags "$ns3" ns3eth2 251 set_random_ethtool_flags "$ns4" ns4eth3 252else 253 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 254 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 255fi 256 257print_file_err() 258{ 259 ls -l "$1" 1>&2 260 echo "Trailing bytes are: " 261 tail -c 27 "$1" 262} 263 264check_transfer() 265{ 266 local in=$1 267 local out=$2 268 local what=$3 269 270 cmp "$in" "$out" > /dev/null 2>&1 271 if [ $? -ne 0 ] ;then 272 echo "[ FAIL ] $what does not match (in, out):" 273 print_file_err "$in" 274 print_file_err "$out" 275 276 return 1 277 fi 278 279 return 0 280} 281 282check_mptcp_disabled() 283{ 284 local disabled_ns="ns_disabled-$rndh" 285 ip netns add ${disabled_ns} || exit $ksft_skip 286 287 # net.mptcp.enabled should be enabled by default 288 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 289 echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]" 290 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" 291 ret=1 292 return 1 293 fi 294 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 295 296 local err=0 297 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 298 grep -q "^socket: Protocol not available$" && err=1 299 ip netns delete ${disabled_ns} 300 301 if [ ${err} -eq 0 ]; then 302 echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" 303 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" 304 ret=1 305 return 1 306 fi 307 308 echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" 309 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" 310 return 0 311} 312 313# $1: IP address 314is_v6() 315{ 316 [ -z "${1##*:*}" ] 317} 318 319do_ping() 320{ 321 local listener_ns="$1" 322 local connector_ns="$2" 323 local connect_addr="$3" 324 local ping_args="-q -c 1" 325 local rc=0 326 327 if is_v6 "${connect_addr}"; then 328 $ipv6 || return 0 329 ping_args="${ping_args} -6" 330 fi 331 332 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 333 334 if [ $rc -ne 0 ] ; then 335 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 336 ret=1 337 338 return 1 339 fi 340 341 return 0 342} 343 344# $1: ns, $2: MIB counter 345get_mib_counter() 346{ 347 local listener_ns="${1}" 348 local mib="${2}" 349 350 # strip the header 351 ip netns exec "${listener_ns}" \ 352 nstat -z -a "${mib}" | \ 353 tail -n+2 | \ 354 while read a count c rest; do 355 echo $count 356 done 357} 358 359# $1: ns, $2: port 360wait_local_port_listen() 361{ 362 local listener_ns="${1}" 363 local port="${2}" 364 365 local port_hex i 366 367 port_hex="$(printf "%04X" "${port}")" 368 for i in $(seq 10); do 369 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ 370 awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && 371 break 372 sleep 0.1 373 done 374} 375 376do_transfer() 377{ 378 local listener_ns="$1" 379 local connector_ns="$2" 380 local cl_proto="$3" 381 local srv_proto="$4" 382 local connect_addr="$5" 383 local local_addr="$6" 384 local extra_args="$7" 385 386 local port 387 port=$((10000+$TEST_COUNT)) 388 TEST_COUNT=$((TEST_COUNT+1)) 389 390 if [ "$rcvbuf" -gt 0 ]; then 391 extra_args="$extra_args -R $rcvbuf" 392 fi 393 394 if [ "$sndbuf" -gt 0 ]; then 395 extra_args="$extra_args -S $sndbuf" 396 fi 397 398 if [ -n "$testmode" ]; then 399 extra_args="$extra_args -m $testmode" 400 fi 401 402 if [ -n "$extra_args" ] && $options_log; then 403 echo "INFO: extra options: $extra_args" 404 fi 405 options_log=false 406 407 :> "$cout" 408 :> "$sout" 409 :> "$capout" 410 411 local addr_port 412 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 413 local result_msg 414 result_msg="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 415 printf "%s\t" "${result_msg}" 416 417 if $capture; then 418 local capuser 419 if [ -z $SUDO_USER ] ; then 420 capuser="" 421 else 422 capuser="-Z $SUDO_USER" 423 fi 424 425 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 426 local capopt="-i any -s 65535 -B 32768 ${capuser}" 427 428 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 429 local cappid_listener=$! 430 431 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 432 local cappid_connector=$! 433 434 sleep 1 435 fi 436 437 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 438 nstat -n 439 if [ ${listener_ns} != ${connector_ns} ]; then 440 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 441 nstat -n 442 fi 443 444 local stat_synrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 445 local stat_ackrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 446 local stat_cookietx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 447 local stat_cookierx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 448 local stat_csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") 449 local stat_csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") 450 451 timeout ${timeout_test} \ 452 ip netns exec ${listener_ns} \ 453 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 454 $extra_args $local_addr < "$sin" > "$sout" & 455 local spid=$! 456 457 wait_local_port_listen "${listener_ns}" "${port}" 458 459 local start 460 start=$(date +%s%3N) 461 timeout ${timeout_test} \ 462 ip netns exec ${connector_ns} \ 463 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 464 $extra_args $connect_addr < "$cin" > "$cout" & 465 local cpid=$! 466 467 wait $cpid 468 local retc=$? 469 wait $spid 470 local rets=$? 471 472 local stop 473 stop=$(date +%s%3N) 474 475 if $capture; then 476 sleep 1 477 kill ${cappid_listener} 478 kill ${cappid_connector} 479 fi 480 481 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 482 nstat | grep Tcp > /tmp/${listener_ns}.out 483 if [ ${listener_ns} != ${connector_ns} ]; then 484 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 485 nstat | grep Tcp > /tmp/${connector_ns}.out 486 fi 487 488 local duration 489 duration=$((stop-start)) 490 result_msg+=" # time=${duration}ms" 491 printf "(duration %05sms) " "${duration}" 492 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 493 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 494 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 495 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 496 cat /tmp/${listener_ns}.out 497 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 498 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 499 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 500 501 echo 502 cat "$capout" 503 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 504 return 1 505 fi 506 507 check_transfer $sin $cout "file received by client" 508 retc=$? 509 check_transfer $cin $sout "file received by server" 510 rets=$? 511 512 local stat_synrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 513 local stat_ackrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 514 local stat_cookietx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 515 local stat_cookierx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 516 local stat_ooo_now=$(get_mib_counter "${listener_ns}" "TcpExtTCPOFOQueue") 517 518 expect_synrx=$((stat_synrx_last_l)) 519 expect_ackrx=$((stat_ackrx_last_l)) 520 521 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 522 cookies=${cookies##*=} 523 524 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 525 expect_synrx=$((stat_synrx_last_l+$connect_per_transfer)) 526 expect_ackrx=$((stat_ackrx_last_l+$connect_per_transfer)) 527 fi 528 529 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 530 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ 531 "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 532 retc=1 533 fi 534 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} -a ${stat_ooo_now} -eq 0 ]; then 535 if [ ${stat_ooo_now} -eq 0 ]; then 536 printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ 537 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 538 rets=1 539 else 540 printf "[ Note ] fallback due to TCP OoO" 541 fi 542 fi 543 544 if $checksum; then 545 local csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") 546 local csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") 547 548 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 549 if [ $csum_err_s_nr -gt 0 ]; then 550 printf "[ FAIL ]\nserver got $csum_err_s_nr data checksum error[s]" 551 rets=1 552 fi 553 554 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 555 if [ $csum_err_c_nr -gt 0 ]; then 556 printf "[ FAIL ]\nclient got $csum_err_c_nr data checksum error[s]" 557 retc=1 558 fi 559 fi 560 561 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 562 printf "[ OK ]" 563 mptcp_lib_result_pass "${TEST_GROUP}: ${result_msg}" 564 else 565 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 566 fi 567 568 if [ $cookies -eq 2 ];then 569 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 570 printf " WARN: CookieSent: did not advance" 571 fi 572 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 573 printf " WARN: CookieRecv: did not advance" 574 fi 575 else 576 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 577 printf " WARN: CookieSent: changed" 578 fi 579 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 580 printf " WARN: CookieRecv: changed" 581 fi 582 fi 583 584 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 585 printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \ 586 "${expect_synrx}" "${stat_synrx_now_l}" 587 fi 588 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 589 printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \ 590 "${expect_ackrx}" "${stat_ackrx_now_l}" 591 fi 592 593 echo 594 cat "$capout" 595 [ $retc -eq 0 ] && [ $rets -eq 0 ] 596} 597 598make_file() 599{ 600 local name=$1 601 local who=$2 602 local SIZE=$filesize 603 local ksize 604 local rem 605 606 if [ $SIZE -eq 0 ]; then 607 local MAXSIZE=$((1024 * 1024 * 8)) 608 local MINSIZE=$((1024 * 256)) 609 610 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 611 fi 612 613 ksize=$((SIZE / 1024)) 614 rem=$((SIZE - (ksize * 1024))) 615 616 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 617 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 618 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 619 620 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 621} 622 623run_tests_lo() 624{ 625 local listener_ns="$1" 626 local connector_ns="$2" 627 local connect_addr="$3" 628 local loopback="$4" 629 local extra_args="$5" 630 local lret=0 631 632 # skip if test programs are running inside same netns for subsequent runs. 633 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 634 return 0 635 fi 636 637 # skip if we don't want v6 638 if ! $ipv6 && is_v6 "${connect_addr}"; then 639 return 0 640 fi 641 642 local local_addr 643 if is_v6 "${connect_addr}"; then 644 local_addr="::" 645 else 646 local_addr="0.0.0.0" 647 fi 648 649 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 650 ${connect_addr} ${local_addr} "${extra_args}" 651 lret=$? 652 if [ $lret -ne 0 ]; then 653 ret=$lret 654 return 1 655 fi 656 657 if [ $do_tcp -eq 0 ]; then 658 # don't bother testing fallback tcp except for loopback case. 659 if [ ${listener_ns} != ${connector_ns} ]; then 660 return 0 661 fi 662 fi 663 664 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 665 ${connect_addr} ${local_addr} "${extra_args}" 666 lret=$? 667 if [ $lret -ne 0 ]; then 668 ret=$lret 669 return 1 670 fi 671 672 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 673 ${connect_addr} ${local_addr} "${extra_args}" 674 lret=$? 675 if [ $lret -ne 0 ]; then 676 ret=$lret 677 return 1 678 fi 679 680 if [ $do_tcp -gt 1 ] ;then 681 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 682 ${connect_addr} ${local_addr} "${extra_args}" 683 lret=$? 684 if [ $lret -ne 0 ]; then 685 ret=$lret 686 return 1 687 fi 688 fi 689 690 return 0 691} 692 693run_tests() 694{ 695 run_tests_lo $1 $2 $3 0 696} 697 698run_test_transparent() 699{ 700 local connect_addr="$1" 701 local msg="$2" 702 703 local connector_ns="$ns1" 704 local listener_ns="$ns2" 705 local lret=0 706 local r6flag="" 707 708 TEST_GROUP="${msg}" 709 710 # skip if we don't want v6 711 if ! $ipv6 && is_v6 "${connect_addr}"; then 712 return 0 713 fi 714 715 # IP(V6)_TRANSPARENT has been added after TOS support which came with 716 # the required infrastructure in MPTCP sockopt code. To support TOS, the 717 # following function has been exported (T). Not great but better than 718 # checking for a specific kernel version. 719 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 720 echo "INFO: ${msg} not supported by the kernel: SKIP" 721 mptcp_lib_result_skip "${TEST_GROUP}" 722 return 723 fi 724 725ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 726flush ruleset 727table inet mangle { 728 chain divert { 729 type filter hook prerouting priority -150; 730 731 meta l4proto tcp socket transparent 1 meta mark set 1 accept 732 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 733 } 734} 735EOF 736 if [ $? -ne 0 ]; then 737 echo "SKIP: $msg, could not load nft ruleset" 738 mptcp_lib_fail_if_expected_feature "nft rules" 739 mptcp_lib_result_skip "${TEST_GROUP}" 740 return 741 fi 742 743 local local_addr 744 if is_v6 "${connect_addr}"; then 745 local_addr="::" 746 r6flag="-6" 747 else 748 local_addr="0.0.0.0" 749 fi 750 751 ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100 752 if [ $? -ne 0 ]; then 753 ip netns exec "$listener_ns" nft flush ruleset 754 echo "SKIP: $msg, ip $r6flag rule failed" 755 mptcp_lib_fail_if_expected_feature "ip rule" 756 mptcp_lib_result_skip "${TEST_GROUP}" 757 return 758 fi 759 760 ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100 761 if [ $? -ne 0 ]; then 762 ip netns exec "$listener_ns" nft flush ruleset 763 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 764 echo "SKIP: $msg, ip route add local $local_addr failed" 765 mptcp_lib_fail_if_expected_feature "ip route" 766 mptcp_lib_result_skip "${TEST_GROUP}" 767 return 768 fi 769 770 echo "INFO: test $msg" 771 772 TEST_COUNT=10000 773 local extra_args="-o TRANSPARENT" 774 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 775 ${connect_addr} ${local_addr} "${extra_args}" 776 lret=$? 777 778 ip netns exec "$listener_ns" nft flush ruleset 779 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 780 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 781 782 if [ $lret -ne 0 ]; then 783 echo "FAIL: $msg, mptcp connection error" 1>&2 784 ret=$lret 785 return 1 786 fi 787 788 echo "PASS: $msg" 789 return 0 790} 791 792run_tests_peekmode() 793{ 794 local peekmode="$1" 795 796 TEST_GROUP="peek mode: ${peekmode}" 797 echo "INFO: with peek mode: ${peekmode}" 798 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 799 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 800} 801 802run_tests_mptfo() 803{ 804 TEST_GROUP="MPTFO" 805 806 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 807 echo "INFO: TFO not supported by the kernel: SKIP" 808 mptcp_lib_result_skip "${TEST_GROUP}" 809 return 810 fi 811 812 echo "INFO: with MPTFO start" 813 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 814 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 815 816 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 817 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 818 819 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 820 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 821 822 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 823 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 824 echo "INFO: with MPTFO end" 825} 826 827run_tests_disconnect() 828{ 829 local old_cin=$cin 830 local old_sin=$sin 831 832 TEST_GROUP="full disconnect" 833 834 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 835 echo "INFO: Full disconnect not supported: SKIP" 836 mptcp_lib_result_skip "${TEST_GROUP}" 837 return 838 fi 839 840 cat $cin $cin $cin > "$cin".disconnect 841 842 # force do_transfer to cope with the multiple transmissions 843 sin="$cin.disconnect" 844 cin="$cin.disconnect" 845 cin_disconnect="$old_cin" 846 connect_per_transfer=3 847 848 echo "INFO: disconnect" 849 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 850 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 851 852 # restore previous status 853 sin=$old_sin 854 cin=$old_cin 855 cin_disconnect="$cin".disconnect 856 connect_per_transfer=1 857} 858 859display_time() 860{ 861 time_end=$(date +%s) 862 time_run=$((time_end-time_start)) 863 864 echo "Time: ${time_run} seconds" 865} 866 867log_if_error() 868{ 869 local msg="$1" 870 871 if [ ${ret} -ne 0 ]; then 872 echo "FAIL: ${msg}" 1>&2 873 874 final_ret=${ret} 875 ret=0 876 877 return ${final_ret} 878 fi 879} 880 881stop_if_error() 882{ 883 if ! log_if_error "${@}"; then 884 display_time 885 mptcp_lib_result_print_all_tap 886 exit ${final_ret} 887 fi 888} 889 890make_file "$cin" "client" 891make_file "$sin" "server" 892 893check_mptcp_disabled 894 895stop_if_error "The kernel configuration is not valid for MPTCP" 896 897echo "INFO: validating network environment with pings" 898for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 899 do_ping "$ns1" $sender 10.0.1.1 900 do_ping "$ns1" $sender dead:beef:1::1 901 902 do_ping "$ns2" $sender 10.0.1.2 903 do_ping "$ns2" $sender dead:beef:1::2 904 do_ping "$ns2" $sender 10.0.2.1 905 do_ping "$ns2" $sender dead:beef:2::1 906 907 do_ping "$ns3" $sender 10.0.2.2 908 do_ping "$ns3" $sender dead:beef:2::2 909 do_ping "$ns3" $sender 10.0.3.2 910 do_ping "$ns3" $sender dead:beef:3::2 911 912 do_ping "$ns4" $sender 10.0.3.1 913 do_ping "$ns4" $sender dead:beef:3::1 914done 915 916mptcp_lib_result_code "${ret}" "ping tests" 917 918stop_if_error "Could not even run ping tests" 919 920[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 921echo -n "INFO: Using loss of $tc_loss " 922test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " 923 924reorder_delay=$(($tc_delay / 4)) 925 926if [ -z "${tc_reorder}" ]; then 927 reorder1=$((RANDOM%10)) 928 reorder1=$((100 - reorder1)) 929 reorder2=$((RANDOM%100)) 930 931 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 932 tc_reorder="reorder ${reorder1}% ${reorder2}%" 933 echo -n "$tc_reorder with delay ${reorder_delay}ms " 934 fi 935elif [ "$tc_reorder" = "0" ];then 936 tc_reorder="" 937elif [ "$reorder_delay" -gt 0 ];then 938 # reordering requires some delay 939 tc_reorder="reorder $tc_reorder" 940 echo -n "$tc_reorder with delay ${reorder_delay}ms " 941fi 942 943echo "on ns3eth4" 944 945tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 946 947TEST_GROUP="loopback v4" 948run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 949stop_if_error "Could not even run loopback test" 950 951TEST_GROUP="loopback v6" 952run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 953stop_if_error "Could not even run loopback v6 test" 954 955TEST_GROUP="multihosts" 956for sender in $ns1 $ns2 $ns3 $ns4;do 957 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 958 # mptcp syncookie support. 959 if [ $sender = $ns1 ]; then 960 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 961 else 962 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 963 fi 964 965 run_tests "$ns1" $sender 10.0.1.1 966 run_tests "$ns1" $sender dead:beef:1::1 967 968 run_tests "$ns2" $sender 10.0.1.2 969 run_tests "$ns2" $sender dead:beef:1::2 970 run_tests "$ns2" $sender 10.0.2.1 971 run_tests "$ns2" $sender dead:beef:2::1 972 973 run_tests "$ns3" $sender 10.0.2.2 974 run_tests "$ns3" $sender dead:beef:2::2 975 run_tests "$ns3" $sender 10.0.3.2 976 run_tests "$ns3" $sender dead:beef:3::2 977 978 run_tests "$ns4" $sender 10.0.3.1 979 run_tests "$ns4" $sender dead:beef:3::1 980 981 log_if_error "Tests with $sender as a sender have failed" 982done 983 984run_tests_peekmode "saveWithPeek" 985run_tests_peekmode "saveAfterPeek" 986log_if_error "Tests with peek mode have failed" 987 988# MPTFO (MultiPath TCP Fatopen tests) 989run_tests_mptfo 990log_if_error "Tests with MPTFO have failed" 991 992# connect to ns4 ip address, ns2 should intercept/proxy 993run_test_transparent 10.0.3.1 "tproxy ipv4" 994run_test_transparent dead:beef:3::1 "tproxy ipv6" 995log_if_error "Tests with tproxy have failed" 996 997run_tests_disconnect 998log_if_error "Tests of the full disconnection have failed" 999 1000display_time 1001mptcp_lib_result_print_all_tap 1002exit ${final_ret} 1003