1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4# Double quotes to prevent globbing and word splitting is recommended in new 5# code but we accept it, especially because there were too many before having 6# address all other issues detected by shellcheck. 7#shellcheck disable=SC2086 8 9. "$(dirname "${0}")/mptcp_lib.sh" 10 11time_start=$(date +%s) 12 13optstring="S:R:d:e:l:r:h4cm:f:tC" 14ret=0 15final_ret=0 16sin="" 17sout="" 18cin_disconnect="" 19cin="" 20cout="" 21capture=false 22timeout_poll=30 23timeout_test=$((timeout_poll * 2 + 1)) 24ipv6=true 25ethtool_random_on=true 26tc_delay="$((RANDOM%50))" 27tc_loss=$((RANDOM%101)) 28testmode="" 29sndbuf=0 30rcvbuf=0 31options_log=true 32do_tcp=0 33checksum=false 34filesize=0 35connect_per_transfer=1 36port=$((10000 - 1)) 37 38if [ $tc_loss -eq 100 ];then 39 tc_loss=1% 40elif [ $tc_loss -ge 10 ]; then 41 tc_loss=0.$tc_loss% 42elif [ $tc_loss -ge 1 ]; then 43 tc_loss=0.0$tc_loss% 44else 45 tc_loss="" 46fi 47 48usage() { 49 echo "Usage: $0 [ -a ]" 50 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" 51 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" 52 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" 53 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" 54 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" 55 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" 56 echo -e "\t-f: size of file to transfer in bytes (default random)" 57 echo -e "\t-S: set sndbuf value (default: use kernel default)" 58 echo -e "\t-R: set rcvbuf value (default: use kernel default)" 59 echo -e "\t-m: test mode (poll, sendfile; default: poll)" 60 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)" 61 echo -e "\t-C: enable the MPTCP data checksum" 62} 63 64while getopts "$optstring" option;do 65 case "$option" in 66 "h") 67 usage $0 68 exit ${KSFT_PASS} 69 ;; 70 "d") 71 if [ $OPTARG -ge 0 ];then 72 tc_delay="$OPTARG" 73 else 74 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2 75 exit ${KSFT_FAIL} 76 fi 77 ;; 78 "e") 79 ethtool_args="$ethtool_args $OPTARG off" 80 ethtool_random_on=false 81 ;; 82 "l") 83 tc_loss="$OPTARG" 84 ;; 85 "r") 86 tc_reorder="$OPTARG" 87 ;; 88 "4") 89 ipv6=false 90 ;; 91 "c") 92 capture=true 93 ;; 94 "S") 95 if [ $OPTARG -ge 0 ];then 96 sndbuf="$OPTARG" 97 else 98 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2 99 exit ${KSFT_FAIL} 100 fi 101 ;; 102 "R") 103 if [ $OPTARG -ge 0 ];then 104 rcvbuf="$OPTARG" 105 else 106 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2 107 exit ${KSFT_FAIL} 108 fi 109 ;; 110 "m") 111 testmode="$OPTARG" 112 ;; 113 "f") 114 filesize="$OPTARG" 115 ;; 116 "t") 117 do_tcp=$((do_tcp+1)) 118 ;; 119 "C") 120 checksum=true 121 ;; 122 "?") 123 usage $0 124 exit ${KSFT_FAIL} 125 ;; 126 esac 127done 128 129ns1="" 130ns2="" 131ns3="" 132ns4="" 133 134TEST_GROUP="" 135 136# This function is used in the cleanup trap 137#shellcheck disable=SC2317,SC2329 138cleanup() 139{ 140 rm -f "$cin_disconnect" 141 rm -f "$cin" "$cout" 142 rm -f "$sin" "$sout" 143 rm -f "$capout" 144 145 mptcp_lib_ns_exit "${ns1}" "${ns2}" "${ns3}" "${ns4}" 146} 147 148mptcp_lib_check_mptcp 149mptcp_lib_check_kallsyms 150mptcp_lib_check_tools ip tc 151 152sin=$(mktemp) 153sout=$(mktemp) 154cin=$(mktemp) 155cout=$(mktemp) 156capout=$(mktemp) 157cin_disconnect="$cin".disconnect 158trap cleanup EXIT 159 160mptcp_lib_ns_init ns1 ns2 ns3 ns4 161 162# "$ns1" ns2 ns3 ns4 163# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 164# - drop 1% -> reorder 25% 165# <- TSO off - 166 167ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 168ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 169ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 170 171ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 172ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 173 174ip -net "$ns1" link set ns1eth2 up 175ip -net "$ns1" route add default via 10.0.1.2 176ip -net "$ns1" route add default via dead:beef:1::2 177 178ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 179ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 180ip -net "$ns2" link set ns2eth1 up 181 182ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 183ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 184ip -net "$ns2" link set ns2eth3 up 185ip -net "$ns2" route add default via 10.0.2.2 186ip -net "$ns2" route add default via dead:beef:2::2 187ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 188ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 189 190ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 191ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 192ip -net "$ns3" link set ns3eth2 up 193 194ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 195ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 196ip -net "$ns3" link set ns3eth4 up 197ip -net "$ns3" route add default via 10.0.2.1 198ip -net "$ns3" route add default via dead:beef:2::1 199ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 200ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 201 202ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 203ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 204ip -net "$ns4" link set ns4eth3 up 205ip -net "$ns4" route add default via 10.0.3.2 206ip -net "$ns4" route add default via dead:beef:3::2 207 208if $checksum; then 209 for i in "$ns1" "$ns2" "$ns3" "$ns4";do 210 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1 211 done 212fi 213 214if $capture; then 215 rndh="${ns1:4}" 216 mptcp_lib_pr_info "Packet capture files will have this prefix: ${rndh}-" 217fi 218 219set_ethtool_flags() { 220 local ns="$1" 221 local dev="$2" 222 local flags="$3" 223 224 if ip netns exec $ns ethtool -K $dev $flags 2>/dev/null; then 225 mptcp_lib_pr_info "set $ns dev $dev: ethtool -K $flags" 226 fi 227} 228 229set_random_ethtool_flags() { 230 local flags="" 231 local r=$RANDOM 232 233 local pick1=$((r & 1)) 234 local pick2=$((r & 2)) 235 local pick3=$((r & 4)) 236 237 [ $pick1 -ne 0 ] && flags="tso off" 238 [ $pick2 -ne 0 ] && flags="$flags gso off" 239 [ $pick3 -ne 0 ] && flags="$flags gro off" 240 241 [ -z "$flags" ] && return 242 243 set_ethtool_flags "$1" "$2" "$flags" 244} 245 246if $ethtool_random_on;then 247 set_random_ethtool_flags "$ns3" ns3eth2 248 set_random_ethtool_flags "$ns4" ns4eth3 249else 250 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 251 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 252fi 253 254print_larger_title() { 255 # here we don't have the time, a bit longer for the alignment 256 MPTCP_LIB_TEST_FORMAT="%02u %-69s" \ 257 mptcp_lib_print_title "${@}" 258} 259 260check_mptcp_disabled() 261{ 262 local disabled_ns 263 mptcp_lib_ns_init disabled_ns 264 265 print_larger_title "New MPTCP socket can be blocked via sysctl" 266 267 # mainly to cover more code 268 if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then 269 mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs" 270 mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs" 271 ret=${KSFT_FAIL} 272 return 1 273 fi 274 275 # net.mptcp.enabled should be enabled by default 276 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 277 mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default" 278 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" 279 ret=${KSFT_FAIL} 280 return 1 281 fi 282 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 283 284 local err=0 285 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 286 grep -q "^socket: Protocol not available$" && err=1 287 mptcp_lib_ns_exit "${disabled_ns}" 288 289 if [ ${err} -eq 0 ]; then 290 mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl" 291 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" 292 ret=${KSFT_FAIL} 293 return 1 294 fi 295 296 mptcp_lib_pr_ok 297 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" 298 return 0 299} 300 301do_ping() 302{ 303 local listener_ns="$1" 304 local connector_ns="$2" 305 local connect_addr="$3" 306 local ping_args="-q -c 1" 307 local rc=0 308 309 if mptcp_lib_is_v6 "${connect_addr}"; then 310 $ipv6 || return 0 311 ping_args="${ping_args} -6" 312 fi 313 314 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 315 316 if [ $rc -ne 0 ] ; then 317 mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity" 318 ret=${KSFT_FAIL} 319 320 return 1 321 fi 322 323 return 0 324} 325 326do_transfer() 327{ 328 local listener_ns="$1" 329 local connector_ns="$2" 330 local cl_proto="$3" 331 local srv_proto="$4" 332 local connect_addr="$5" 333 local local_addr="$6" 334 local extra_args="$7" 335 336 port=$((port + 1)) 337 338 if [ "$rcvbuf" -gt 0 ]; then 339 extra_args+=" -R $rcvbuf" 340 fi 341 342 if [ "$sndbuf" -gt 0 ]; then 343 extra_args+=" -S $sndbuf" 344 fi 345 346 if [ -n "$testmode" ]; then 347 extra_args+=" -m $testmode" 348 fi 349 350 if [ -n "$extra_args" ] && $options_log; then 351 mptcp_lib_pr_info "extra options: $extra_args" 352 fi 353 options_log=false 354 355 :> "$cout" 356 :> "$sout" 357 :> "$capout" 358 359 local addr_port 360 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 361 local pretty_title 362 pretty_title="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 363 mptcp_lib_print_title "${pretty_title}" 364 365 local tap_title="${connector_ns:0:3} ${cl_proto} -> ${listener_ns:0:3} (${addr_port}) ${srv_proto}" 366 367 if $capture; then 368 local capuser 369 if [ -z $SUDO_USER ] ; then 370 capuser="" 371 else 372 capuser="-Z $SUDO_USER" 373 fi 374 375 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 376 local capopt="-i any -s 65535 -B 32768 ${capuser}" 377 378 ip netns exec ${listener_ns} tcpdump ${capopt} \ 379 -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 380 local cappid_listener=$! 381 382 if [ ${listener_ns} != ${connector_ns} ]; then 383 ip netns exec ${connector_ns} tcpdump ${capopt} \ 384 -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 385 local cappid_connector=$! 386 fi 387 388 sleep 1 389 fi 390 391 mptcp_lib_nstat_init "${listener_ns}" 392 if [ ${listener_ns} != ${connector_ns} ]; then 393 mptcp_lib_nstat_init "${connector_ns}" 394 fi 395 396 ip netns exec ${listener_ns} \ 397 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 398 $extra_args $local_addr < "$sin" > "$sout" & 399 local spid=$! 400 401 mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}" 402 403 local start 404 start=$(date +%s%3N) 405 ip netns exec ${connector_ns} \ 406 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 407 $extra_args $connect_addr < "$cin" > "$cout" & 408 local cpid=$! 409 410 mptcp_lib_wait_timeout "${timeout_test}" "${listener_ns}" \ 411 "${connector_ns}" "${port}" "${cpid}" "${spid}" & 412 local timeout_pid=$! 413 414 wait $cpid 415 local retc=$? 416 wait $spid 417 local rets=$? 418 419 if kill -0 $timeout_pid; then 420 # Finished before the timeout: kill the background job 421 mptcp_lib_kill_group_wait $timeout_pid 422 timeout_pid=0 423 fi 424 425 local stop 426 stop=$(date +%s%3N) 427 428 if $capture; then 429 sleep 1 430 kill ${cappid_listener} 431 if [ ${listener_ns} != ${connector_ns} ]; then 432 kill ${cappid_connector} 433 fi 434 fi 435 436 mptcp_lib_nstat_get "${listener_ns}" 437 if [ ${listener_ns} != ${connector_ns} ]; then 438 mptcp_lib_nstat_get "${connector_ns}" 439 fi 440 441 local duration 442 duration=$((stop-start)) 443 printf "(duration %05sms) " "${duration}" 444 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ] || [ ${timeout_pid} -ne 0 ]; then 445 mptcp_lib_pr_fail "client exit code $retc, server $rets" 446 mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}" 447 448 echo 449 cat "$capout" 450 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 451 return 1 452 fi 453 454 mptcp_lib_check_transfer $sin $cout "file received by client" 455 retc=$? 456 mptcp_lib_check_transfer $cin $sout "file received by server" 457 rets=$? 458 459 local extra="" 460 local stat_synrx 461 local stat_ackrx 462 local stat_cookietx 463 local stat_cookierx 464 local stat_ooo 465 local stat_tcpfb 466 stat_synrx=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 467 stat_ackrx=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 468 stat_cookietx=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 469 stat_cookierx=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 470 stat_ooo=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 471 stat_tcpfb=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 472 473 expect_synrx=0 474 expect_ackrx=0 475 476 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 477 cookies=${cookies##*=} 478 479 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 480 expect_synrx=${connect_per_transfer} 481 expect_ackrx=${connect_per_transfer} 482 fi 483 484 if [ ${stat_synrx} -lt ${expect_synrx} ]; then 485 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx})" \ 486 "than expected (${expect_synrx})" 487 retc=1 488 fi 489 if [ ${stat_ackrx} -lt ${expect_ackrx} ]; then 490 if [ ${stat_ooo} -eq 0 ]; then 491 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx})" \ 492 "than expected (${expect_ackrx})" 493 rets=1 494 else 495 extra+=" [ Note ] fallback due to TCP OoO" 496 fi 497 fi 498 499 if $checksum; then 500 local csum_err_s 501 local csum_err_c 502 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 503 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 504 505 if [ $csum_err_s -gt 0 ]; then 506 mptcp_lib_pr_fail "server got ${csum_err_s} data checksum error[s]" 507 rets=1 508 fi 509 510 if [ $csum_err_c -gt 0 ]; then 511 mptcp_lib_pr_fail "client got ${csum_err_c} data checksum error[s]" 512 retc=1 513 fi 514 fi 515 516 if [ ${stat_ooo} -eq 0 ] && [ ${stat_tcpfb} -gt 0 ]; then 517 mptcp_lib_pr_fail "unexpected fallback to TCP" 518 rets=1 519 fi 520 521 if [ $cookies -eq 2 ];then 522 if [ $stat_cookietx -eq 0 ] ;then 523 extra+=" WARN: CookieSent: did not advance" 524 fi 525 if [ $stat_cookierx -eq 0 ] ;then 526 extra+=" WARN: CookieRecv: did not advance" 527 fi 528 else 529 if [ $stat_cookietx -gt 0 ] ;then 530 extra+=" WARN: CookieSent: changed" 531 fi 532 if [ $stat_cookierx -gt 0 ] ;then 533 extra+=" WARN: CookieRecv: changed" 534 fi 535 fi 536 537 if [ ${stat_synrx} -gt ${expect_synrx} ]; then 538 extra+=" WARN: SYNRX: expect ${expect_synrx}," 539 extra+=" got ${stat_synrx} (probably retransmissions)" 540 fi 541 if [ ${stat_ackrx} -gt ${expect_ackrx} ]; then 542 extra+=" WARN: ACKRX: expect ${expect_ackrx}," 543 extra+=" got ${stat_ackrx} (probably retransmissions)" 544 fi 545 546 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 547 mptcp_lib_pr_ok "${extra:1}" 548 mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}" 549 else 550 if [ -n "${extra}" ]; then 551 mptcp_lib_print_warn "${extra:1}" 552 fi 553 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 554 fi 555 556 cat "$capout" 557 [ $retc -eq 0 ] && [ $rets -eq 0 ] 558} 559 560make_file() 561{ 562 local name=$1 563 local who=$2 564 local SIZE=$filesize 565 local ksize 566 local rem 567 568 if [ $SIZE -eq 0 ]; then 569 local MAXSIZE=$((1024 * 1024 * 8)) 570 local MINSIZE=$((1024 * 256)) 571 572 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 573 fi 574 575 ksize=$((SIZE / 1024)) 576 rem=$((SIZE - (ksize * 1024))) 577 578 mptcp_lib_make_file $name 1024 $ksize 579 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null 580 581 echo "Created $name (size $(stat -c "%s" "$name") B) containing data sent by $who" 582} 583 584run_tests_lo() 585{ 586 local listener_ns="$1" 587 local connector_ns="$2" 588 local connect_addr="$3" 589 local loopback="$4" 590 local extra_args="$5" 591 local lret=0 592 593 # skip if test programs are running inside same netns for subsequent runs. 594 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 595 return 0 596 fi 597 598 # skip if we don't want v6 599 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 600 return 0 601 fi 602 603 local local_addr 604 if mptcp_lib_is_v6 "${connect_addr}"; then 605 local_addr="::" 606 else 607 local_addr="0.0.0.0" 608 fi 609 610 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 611 ${connect_addr} ${local_addr} "${extra_args}" 612 lret=$? 613 if [ $lret -ne 0 ]; then 614 ret=$lret 615 return 1 616 fi 617 618 if [ $do_tcp -eq 0 ]; then 619 # don't bother testing fallback tcp except for loopback case. 620 if [ ${listener_ns} != ${connector_ns} ]; then 621 return 0 622 fi 623 fi 624 625 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 626 ${connect_addr} ${local_addr} "${extra_args}" 627 lret=$? 628 if [ $lret -ne 0 ]; then 629 ret=$lret 630 return 1 631 fi 632 633 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 634 ${connect_addr} ${local_addr} "${extra_args}" 635 lret=$? 636 if [ $lret -ne 0 ]; then 637 ret=$lret 638 return 1 639 fi 640 641 if [ $do_tcp -gt 1 ] ;then 642 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 643 ${connect_addr} ${local_addr} "${extra_args}" 644 lret=$? 645 if [ $lret -ne 0 ]; then 646 ret=$lret 647 return 1 648 fi 649 fi 650 651 return 0 652} 653 654run_tests() 655{ 656 run_tests_lo $1 $2 $3 0 657} 658 659run_test_transparent() 660{ 661 local connect_addr="$1" 662 local msg="$2" 663 664 local connector_ns="$ns1" 665 local listener_ns="$ns2" 666 local lret=0 667 local r6flag="" 668 669 TEST_GROUP="${msg}" 670 671 # skip if we don't want v6 672 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 673 return 0 674 fi 675 676 # IP(V6)_TRANSPARENT has been added after TOS support which came with 677 # the required infrastructure in MPTCP sockopt code. To support TOS, the 678 # following function has been exported (T). Not great but better than 679 # checking for a specific kernel version. 680 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 681 mptcp_lib_pr_skip "${msg} not supported by the kernel" 682 mptcp_lib_result_skip "${TEST_GROUP}" 683 return 684 fi 685 686 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 687flush ruleset 688table inet mangle { 689 chain divert { 690 type filter hook prerouting priority -150; 691 692 meta l4proto tcp socket transparent 1 meta mark set 1 accept 693 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 694 } 695} 696EOF 697 then 698 mptcp_lib_pr_skip "$msg, could not load nft ruleset" 699 mptcp_lib_fail_if_expected_feature "nft rules" 700 mptcp_lib_result_skip "${TEST_GROUP}" 701 return 702 fi 703 704 local local_addr 705 if mptcp_lib_is_v6 "${connect_addr}"; then 706 local_addr="::" 707 r6flag="-6" 708 else 709 local_addr="0.0.0.0" 710 fi 711 712 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then 713 ip netns exec "$listener_ns" nft flush ruleset 714 mptcp_lib_pr_skip "$msg, ip $r6flag rule failed" 715 mptcp_lib_fail_if_expected_feature "ip rule" 716 mptcp_lib_result_skip "${TEST_GROUP}" 717 return 718 fi 719 720 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then 721 ip netns exec "$listener_ns" nft flush ruleset 722 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 723 mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed" 724 mptcp_lib_fail_if_expected_feature "ip route" 725 mptcp_lib_result_skip "${TEST_GROUP}" 726 return 727 fi 728 729 mptcp_lib_pr_info "test $msg" 730 731 port=$((20000 - 1)) 732 local extra_args="-o TRANSPARENT" 733 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 734 ${connect_addr} ${local_addr} "${extra_args}" 735 lret=$? 736 737 ip netns exec "$listener_ns" nft flush ruleset 738 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 739 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 740 741 if [ $lret -ne 0 ]; then 742 mptcp_lib_pr_fail "$msg, mptcp connection error" 743 ret=$lret 744 return 1 745 fi 746 747 mptcp_lib_pr_info "$msg pass" 748 return 0 749} 750 751run_tests_peekmode() 752{ 753 local peekmode="$1" 754 755 TEST_GROUP="peek mode: ${peekmode}" 756 mptcp_lib_pr_info "with peek mode: ${peekmode}" 757 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 758 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 759} 760 761run_tests_mptfo() 762{ 763 TEST_GROUP="MPTFO" 764 765 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 766 mptcp_lib_pr_skip "TFO not supported by the kernel" 767 mptcp_lib_result_skip "${TEST_GROUP}" 768 return 769 fi 770 771 mptcp_lib_pr_info "with MPTFO start" 772 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 773 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 774 775 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 776 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 777 778 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 779 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 780 781 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 782 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 783 mptcp_lib_pr_info "with MPTFO end" 784} 785 786run_tests_disconnect() 787{ 788 local old_cin=$cin 789 local old_sin=$sin 790 791 TEST_GROUP="full disconnect" 792 793 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 794 mptcp_lib_pr_skip "Full disconnect not supported" 795 mptcp_lib_result_skip "${TEST_GROUP}" 796 return 797 fi 798 799 cat $cin $cin $cin > "$cin".disconnect 800 801 # force do_transfer to cope with the multiple transmissions 802 sin="$cin.disconnect" 803 cin="$cin.disconnect" 804 cin_disconnect="$old_cin" 805 connect_per_transfer=3 806 807 mptcp_lib_pr_info "disconnect" 808 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 809 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 810 811 # restore previous status 812 sin=$old_sin 813 cin=$old_cin 814 cin_disconnect="$cin".disconnect 815 connect_per_transfer=1 816} 817 818display_time() 819{ 820 time_end=$(date +%s) 821 time_run=$((time_end-time_start)) 822 823 echo "Time: ${time_run} seconds" 824} 825 826log_if_error() 827{ 828 local msg="$1" 829 830 if [ ${ret} -ne 0 ]; then 831 mptcp_lib_pr_fail "${msg}" 832 833 final_ret=${ret} 834 ret=${KSFT_PASS} 835 836 return ${final_ret} 837 fi 838} 839 840stop_if_error() 841{ 842 if ! log_if_error "${@}"; then 843 display_time 844 mptcp_lib_result_print_all_tap 845 exit ${final_ret} 846 fi 847} 848 849make_file "$cin" "client" 850make_file "$sin" "server" 851 852mptcp_lib_subtests_last_ts_reset 853 854check_mptcp_disabled 855 856stop_if_error "The kernel configuration is not valid for MPTCP" 857 858print_larger_title "Validating network environment with pings" 859for sender in "$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" $sender dead:beef:3::1 875done 876 877mptcp_lib_result_code "${ret}" "ping tests" 878 879stop_if_error "Could not even run ping tests" 880mptcp_lib_pr_ok 881 882[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 883tc_info="loss of $tc_loss " 884test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms " 885 886reorder_delay=$((tc_delay / 4)) 887 888if [ -z "${tc_reorder}" ]; then 889 reorder1=$((RANDOM%10)) 890 reorder1=$((100 - reorder1)) 891 reorder2=$((RANDOM%100)) 892 893 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 894 tc_reorder="reorder ${reorder1}% ${reorder2}%" 895 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 896 fi 897elif [ "$tc_reorder" = "0" ];then 898 tc_reorder="" 899elif [ "$reorder_delay" -gt 0 ];then 900 # reordering requires some delay 901 tc_reorder="reorder $tc_reorder" 902 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 903fi 904 905mptcp_lib_pr_info "Using ${tc_info}on ns3eth4" 906 907tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 908 909TEST_GROUP="loopback v4" 910run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 911stop_if_error "Could not even run loopback test" 912 913TEST_GROUP="loopback v6" 914run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 915stop_if_error "Could not even run loopback v6 test" 916 917TEST_GROUP="multihosts" 918for sender in $ns1 $ns2 $ns3 $ns4;do 919 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 920 # mptcp syncookie support. 921 if [ $sender = $ns1 ]; then 922 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 923 else 924 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 925 fi 926 927 run_tests "$ns1" $sender 10.0.1.1 928 run_tests "$ns1" $sender dead:beef:1::1 929 930 run_tests "$ns2" $sender 10.0.1.2 931 run_tests "$ns2" $sender dead:beef:1::2 932 run_tests "$ns2" $sender 10.0.2.1 933 run_tests "$ns2" $sender dead:beef:2::1 934 935 run_tests "$ns3" $sender 10.0.2.2 936 run_tests "$ns3" $sender dead:beef:2::2 937 run_tests "$ns3" $sender 10.0.3.2 938 run_tests "$ns3" $sender dead:beef:3::2 939 940 run_tests "$ns4" $sender 10.0.3.1 941 run_tests "$ns4" $sender dead:beef:3::1 942 943 log_if_error "Tests with $sender as a sender have failed" 944done 945 946run_tests_peekmode "saveWithPeek" 947run_tests_peekmode "saveAfterPeek" 948log_if_error "Tests with peek mode have failed" 949 950# MPTFO (MultiPath TCP Fatopen tests) 951run_tests_mptfo 952log_if_error "Tests with MPTFO have failed" 953 954# connect to ns4 ip address, ns2 should intercept/proxy 955run_test_transparent 10.0.3.1 "tproxy ipv4" 956run_test_transparent dead:beef:3::1 "tproxy ipv6" 957log_if_error "Tests with tproxy have failed" 958 959run_tests_disconnect 960log_if_error "Tests of the full disconnection have failed" 961 962display_time 963mptcp_lib_result_print_all_tap 964exit ${final_ret} 965