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 313do_ping() 314{ 315 local listener_ns="$1" 316 local connector_ns="$2" 317 local connect_addr="$3" 318 local ping_args="-q -c 1" 319 local rc=0 320 321 if mptcp_lib_is_v6 "${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 || rc=1 327 328 if [ $rc -ne 0 ] ; then 329 echo "$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, $2: port 339wait_local_port_listen() 340{ 341 local listener_ns="${1}" 342 local port="${2}" 343 344 local port_hex i 345 346 port_hex="$(printf "%04X" "${port}")" 347 for i in $(seq 10); do 348 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ 349 awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && 350 break 351 sleep 0.1 352 done 353} 354 355do_transfer() 356{ 357 local listener_ns="$1" 358 local connector_ns="$2" 359 local cl_proto="$3" 360 local srv_proto="$4" 361 local connect_addr="$5" 362 local local_addr="$6" 363 local extra_args="$7" 364 365 local port 366 port=$((10000+$TEST_COUNT)) 367 TEST_COUNT=$((TEST_COUNT+1)) 368 369 if [ "$rcvbuf" -gt 0 ]; then 370 extra_args="$extra_args -R $rcvbuf" 371 fi 372 373 if [ "$sndbuf" -gt 0 ]; then 374 extra_args="$extra_args -S $sndbuf" 375 fi 376 377 if [ -n "$testmode" ]; then 378 extra_args="$extra_args -m $testmode" 379 fi 380 381 if [ -n "$extra_args" ] && $options_log; then 382 echo "INFO: extra options: $extra_args" 383 fi 384 options_log=false 385 386 :> "$cout" 387 :> "$sout" 388 :> "$capout" 389 390 local addr_port 391 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 392 local result_msg 393 result_msg="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 394 printf "%s\t" "${result_msg}" 395 396 if $capture; then 397 local capuser 398 if [ -z $SUDO_USER ] ; then 399 capuser="" 400 else 401 capuser="-Z $SUDO_USER" 402 fi 403 404 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 405 local capopt="-i any -s 65535 -B 32768 ${capuser}" 406 407 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 408 local cappid_listener=$! 409 410 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 411 local cappid_connector=$! 412 413 sleep 1 414 fi 415 416 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 417 nstat -n 418 if [ ${listener_ns} != ${connector_ns} ]; then 419 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 420 nstat -n 421 fi 422 423 local stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 424 local stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 425 local stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 426 local stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 427 local stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 428 local stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 429 430 timeout ${timeout_test} \ 431 ip netns exec ${listener_ns} \ 432 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 433 $extra_args $local_addr < "$sin" > "$sout" & 434 local spid=$! 435 436 wait_local_port_listen "${listener_ns}" "${port}" 437 438 local start 439 start=$(date +%s%3N) 440 timeout ${timeout_test} \ 441 ip netns exec ${connector_ns} \ 442 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 443 $extra_args $connect_addr < "$cin" > "$cout" & 444 local cpid=$! 445 446 wait $cpid 447 local retc=$? 448 wait $spid 449 local rets=$? 450 451 local stop 452 stop=$(date +%s%3N) 453 454 if $capture; then 455 sleep 1 456 kill ${cappid_listener} 457 kill ${cappid_connector} 458 fi 459 460 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 461 nstat | grep Tcp > /tmp/${listener_ns}.out 462 if [ ${listener_ns} != ${connector_ns} ]; then 463 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 464 nstat | grep Tcp > /tmp/${connector_ns}.out 465 fi 466 467 local duration 468 duration=$((stop-start)) 469 result_msg+=" # time=${duration}ms" 470 printf "(duration %05sms) " "${duration}" 471 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 472 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 473 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 474 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 475 cat /tmp/${listener_ns}.out 476 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 477 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 478 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 479 480 echo 481 cat "$capout" 482 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 483 return 1 484 fi 485 486 check_transfer $sin $cout "file received by client" 487 retc=$? 488 check_transfer $cin $sout "file received by server" 489 rets=$? 490 491 local stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 492 local stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 493 local stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 494 local stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 495 local stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 496 497 expect_synrx=$((stat_synrx_last_l)) 498 expect_ackrx=$((stat_ackrx_last_l)) 499 500 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 501 cookies=${cookies##*=} 502 503 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 504 expect_synrx=$((stat_synrx_last_l+$connect_per_transfer)) 505 expect_ackrx=$((stat_ackrx_last_l+$connect_per_transfer)) 506 fi 507 508 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 509 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ 510 "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 511 retc=1 512 fi 513 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} -a ${stat_ooo_now} -eq 0 ]; then 514 if [ ${stat_ooo_now} -eq 0 ]; then 515 printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ 516 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 517 rets=1 518 else 519 printf "[ Note ] fallback due to TCP OoO" 520 fi 521 fi 522 523 if $checksum; then 524 local csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 525 local csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 526 527 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 528 if [ $csum_err_s_nr -gt 0 ]; then 529 printf "[ FAIL ]\nserver got $csum_err_s_nr data checksum error[s]" 530 rets=1 531 fi 532 533 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 534 if [ $csum_err_c_nr -gt 0 ]; then 535 printf "[ FAIL ]\nclient got $csum_err_c_nr data checksum error[s]" 536 retc=1 537 fi 538 fi 539 540 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 541 printf "[ OK ]" 542 mptcp_lib_result_pass "${TEST_GROUP}: ${result_msg}" 543 else 544 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 545 fi 546 547 if [ $cookies -eq 2 ];then 548 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 549 printf " WARN: CookieSent: did not advance" 550 fi 551 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 552 printf " WARN: CookieRecv: did not advance" 553 fi 554 else 555 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 556 printf " WARN: CookieSent: changed" 557 fi 558 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 559 printf " WARN: CookieRecv: changed" 560 fi 561 fi 562 563 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 564 printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \ 565 "${expect_synrx}" "${stat_synrx_now_l}" 566 fi 567 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 568 printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \ 569 "${expect_ackrx}" "${stat_ackrx_now_l}" 570 fi 571 572 echo 573 cat "$capout" 574 [ $retc -eq 0 ] && [ $rets -eq 0 ] 575} 576 577make_file() 578{ 579 local name=$1 580 local who=$2 581 local SIZE=$filesize 582 local ksize 583 local rem 584 585 if [ $SIZE -eq 0 ]; then 586 local MAXSIZE=$((1024 * 1024 * 8)) 587 local MINSIZE=$((1024 * 256)) 588 589 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 590 fi 591 592 ksize=$((SIZE / 1024)) 593 rem=$((SIZE - (ksize * 1024))) 594 595 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 596 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 597 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 598 599 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 600} 601 602run_tests_lo() 603{ 604 local listener_ns="$1" 605 local connector_ns="$2" 606 local connect_addr="$3" 607 local loopback="$4" 608 local extra_args="$5" 609 local lret=0 610 611 # skip if test programs are running inside same netns for subsequent runs. 612 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 613 return 0 614 fi 615 616 # skip if we don't want v6 617 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 618 return 0 619 fi 620 621 local local_addr 622 if mptcp_lib_is_v6 "${connect_addr}"; then 623 local_addr="::" 624 else 625 local_addr="0.0.0.0" 626 fi 627 628 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 629 ${connect_addr} ${local_addr} "${extra_args}" 630 lret=$? 631 if [ $lret -ne 0 ]; then 632 ret=$lret 633 return 1 634 fi 635 636 if [ $do_tcp -eq 0 ]; then 637 # don't bother testing fallback tcp except for loopback case. 638 if [ ${listener_ns} != ${connector_ns} ]; then 639 return 0 640 fi 641 fi 642 643 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 644 ${connect_addr} ${local_addr} "${extra_args}" 645 lret=$? 646 if [ $lret -ne 0 ]; then 647 ret=$lret 648 return 1 649 fi 650 651 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 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 if [ $do_tcp -gt 1 ] ;then 660 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 661 ${connect_addr} ${local_addr} "${extra_args}" 662 lret=$? 663 if [ $lret -ne 0 ]; then 664 ret=$lret 665 return 1 666 fi 667 fi 668 669 return 0 670} 671 672run_tests() 673{ 674 run_tests_lo $1 $2 $3 0 675} 676 677run_test_transparent() 678{ 679 local connect_addr="$1" 680 local msg="$2" 681 682 local connector_ns="$ns1" 683 local listener_ns="$ns2" 684 local lret=0 685 local r6flag="" 686 687 TEST_GROUP="${msg}" 688 689 # skip if we don't want v6 690 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 691 return 0 692 fi 693 694 # IP(V6)_TRANSPARENT has been added after TOS support which came with 695 # the required infrastructure in MPTCP sockopt code. To support TOS, the 696 # following function has been exported (T). Not great but better than 697 # checking for a specific kernel version. 698 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 699 echo "INFO: ${msg} not supported by the kernel: SKIP" 700 mptcp_lib_result_skip "${TEST_GROUP}" 701 return 702 fi 703 704ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 705flush ruleset 706table inet mangle { 707 chain divert { 708 type filter hook prerouting priority -150; 709 710 meta l4proto tcp socket transparent 1 meta mark set 1 accept 711 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 712 } 713} 714EOF 715 if [ $? -ne 0 ]; then 716 echo "SKIP: $msg, could not load nft ruleset" 717 mptcp_lib_fail_if_expected_feature "nft rules" 718 mptcp_lib_result_skip "${TEST_GROUP}" 719 return 720 fi 721 722 local local_addr 723 if mptcp_lib_is_v6 "${connect_addr}"; then 724 local_addr="::" 725 r6flag="-6" 726 else 727 local_addr="0.0.0.0" 728 fi 729 730 ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100 731 if [ $? -ne 0 ]; then 732 ip netns exec "$listener_ns" nft flush ruleset 733 echo "SKIP: $msg, ip $r6flag rule failed" 734 mptcp_lib_fail_if_expected_feature "ip rule" 735 mptcp_lib_result_skip "${TEST_GROUP}" 736 return 737 fi 738 739 ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100 740 if [ $? -ne 0 ]; then 741 ip netns exec "$listener_ns" nft flush ruleset 742 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 743 echo "SKIP: $msg, ip route add local $local_addr failed" 744 mptcp_lib_fail_if_expected_feature "ip route" 745 mptcp_lib_result_skip "${TEST_GROUP}" 746 return 747 fi 748 749 echo "INFO: test $msg" 750 751 TEST_COUNT=10000 752 local extra_args="-o TRANSPARENT" 753 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 754 ${connect_addr} ${local_addr} "${extra_args}" 755 lret=$? 756 757 ip netns exec "$listener_ns" nft flush ruleset 758 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 759 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 760 761 if [ $lret -ne 0 ]; then 762 echo "FAIL: $msg, mptcp connection error" 1>&2 763 ret=$lret 764 return 1 765 fi 766 767 echo "PASS: $msg" 768 return 0 769} 770 771run_tests_peekmode() 772{ 773 local peekmode="$1" 774 775 TEST_GROUP="peek mode: ${peekmode}" 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 ${peekmode}" 779} 780 781run_tests_mptfo() 782{ 783 TEST_GROUP="MPTFO" 784 785 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 786 echo "INFO: TFO not supported by the kernel: SKIP" 787 mptcp_lib_result_skip "${TEST_GROUP}" 788 return 789 fi 790 791 echo "INFO: with MPTFO start" 792 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 793 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 794 795 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 796 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 797 798 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 799 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 800 801 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 802 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 803 echo "INFO: with MPTFO end" 804} 805 806run_tests_disconnect() 807{ 808 local old_cin=$cin 809 local old_sin=$sin 810 811 TEST_GROUP="full disconnect" 812 813 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 814 echo "INFO: Full disconnect not supported: SKIP" 815 mptcp_lib_result_skip "${TEST_GROUP}" 816 return 817 fi 818 819 cat $cin $cin $cin > "$cin".disconnect 820 821 # force do_transfer to cope with the multiple transmissions 822 sin="$cin.disconnect" 823 cin="$cin.disconnect" 824 cin_disconnect="$old_cin" 825 connect_per_transfer=3 826 827 echo "INFO: disconnect" 828 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 829 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 830 831 # restore previous status 832 sin=$old_sin 833 cin=$old_cin 834 cin_disconnect="$cin".disconnect 835 connect_per_transfer=1 836} 837 838display_time() 839{ 840 time_end=$(date +%s) 841 time_run=$((time_end-time_start)) 842 843 echo "Time: ${time_run} seconds" 844} 845 846log_if_error() 847{ 848 local msg="$1" 849 850 if [ ${ret} -ne 0 ]; then 851 echo "FAIL: ${msg}" 1>&2 852 853 final_ret=${ret} 854 ret=0 855 856 return ${final_ret} 857 fi 858} 859 860stop_if_error() 861{ 862 if ! log_if_error "${@}"; then 863 display_time 864 mptcp_lib_result_print_all_tap 865 exit ${final_ret} 866 fi 867} 868 869make_file "$cin" "client" 870make_file "$sin" "server" 871 872check_mptcp_disabled 873 874stop_if_error "The kernel configuration is not valid for MPTCP" 875 876echo "INFO: validating network environment with pings" 877for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 878 do_ping "$ns1" $sender 10.0.1.1 879 do_ping "$ns1" $sender dead:beef:1::1 880 881 do_ping "$ns2" $sender 10.0.1.2 882 do_ping "$ns2" $sender dead:beef:1::2 883 do_ping "$ns2" $sender 10.0.2.1 884 do_ping "$ns2" $sender dead:beef:2::1 885 886 do_ping "$ns3" $sender 10.0.2.2 887 do_ping "$ns3" $sender dead:beef:2::2 888 do_ping "$ns3" $sender 10.0.3.2 889 do_ping "$ns3" $sender dead:beef:3::2 890 891 do_ping "$ns4" $sender 10.0.3.1 892 do_ping "$ns4" $sender dead:beef:3::1 893done 894 895mptcp_lib_result_code "${ret}" "ping tests" 896 897stop_if_error "Could not even run ping tests" 898 899[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 900echo -n "INFO: Using loss of $tc_loss " 901test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " 902 903reorder_delay=$(($tc_delay / 4)) 904 905if [ -z "${tc_reorder}" ]; then 906 reorder1=$((RANDOM%10)) 907 reorder1=$((100 - reorder1)) 908 reorder2=$((RANDOM%100)) 909 910 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 911 tc_reorder="reorder ${reorder1}% ${reorder2}%" 912 echo -n "$tc_reorder with delay ${reorder_delay}ms " 913 fi 914elif [ "$tc_reorder" = "0" ];then 915 tc_reorder="" 916elif [ "$reorder_delay" -gt 0 ];then 917 # reordering requires some delay 918 tc_reorder="reorder $tc_reorder" 919 echo -n "$tc_reorder with delay ${reorder_delay}ms " 920fi 921 922echo "on ns3eth4" 923 924tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 925 926TEST_GROUP="loopback v4" 927run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 928stop_if_error "Could not even run loopback test" 929 930TEST_GROUP="loopback v6" 931run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 932stop_if_error "Could not even run loopback v6 test" 933 934TEST_GROUP="multihosts" 935for sender in $ns1 $ns2 $ns3 $ns4;do 936 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 937 # mptcp syncookie support. 938 if [ $sender = $ns1 ]; then 939 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 940 else 941 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 942 fi 943 944 run_tests "$ns1" $sender 10.0.1.1 945 run_tests "$ns1" $sender dead:beef:1::1 946 947 run_tests "$ns2" $sender 10.0.1.2 948 run_tests "$ns2" $sender dead:beef:1::2 949 run_tests "$ns2" $sender 10.0.2.1 950 run_tests "$ns2" $sender dead:beef:2::1 951 952 run_tests "$ns3" $sender 10.0.2.2 953 run_tests "$ns3" $sender dead:beef:2::2 954 run_tests "$ns3" $sender 10.0.3.2 955 run_tests "$ns3" $sender dead:beef:3::2 956 957 run_tests "$ns4" $sender 10.0.3.1 958 run_tests "$ns4" $sender dead:beef:3::1 959 960 log_if_error "Tests with $sender as a sender have failed" 961done 962 963run_tests_peekmode "saveWithPeek" 964run_tests_peekmode "saveAfterPeek" 965log_if_error "Tests with peek mode have failed" 966 967# MPTFO (MultiPath TCP Fatopen tests) 968run_tests_mptfo 969log_if_error "Tests with MPTFO have failed" 970 971# connect to ns4 ip address, ns2 should intercept/proxy 972run_test_transparent 10.0.3.1 "tproxy ipv4" 973run_test_transparent dead:beef:3::1 "tproxy ipv6" 974log_if_error "Tests with tproxy have failed" 975 976run_tests_disconnect 977log_if_error "Tests of the full disconnection have failed" 978 979display_time 980mptcp_lib_result_print_all_tap 981exit ${final_ret} 982