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 36 37if [ $tc_loss -eq 100 ];then 38 tc_loss=1% 39elif [ $tc_loss -ge 10 ]; then 40 tc_loss=0.$tc_loss% 41elif [ $tc_loss -ge 1 ]; then 42 tc_loss=0.0$tc_loss% 43else 44 tc_loss="" 45fi 46 47usage() { 48 echo "Usage: $0 [ -a ]" 49 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" 50 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" 51 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" 52 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" 53 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" 54 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" 55 echo -e "\t-f: size of file to transfer in bytes (default random)" 56 echo -e "\t-S: set sndbuf value (default: use kernel default)" 57 echo -e "\t-R: set rcvbuf value (default: use kernel default)" 58 echo -e "\t-m: test mode (poll, sendfile; default: poll)" 59 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)" 60 echo -e "\t-C: enable the MPTCP data checksum" 61} 62 63while getopts "$optstring" option;do 64 case "$option" in 65 "h") 66 usage $0 67 exit 0 68 ;; 69 "d") 70 if [ $OPTARG -ge 0 ];then 71 tc_delay="$OPTARG" 72 else 73 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2 74 exit 1 75 fi 76 ;; 77 "e") 78 ethtool_args="$ethtool_args $OPTARG off" 79 ethtool_random_on=false 80 ;; 81 "l") 82 tc_loss="$OPTARG" 83 ;; 84 "r") 85 tc_reorder="$OPTARG" 86 ;; 87 "4") 88 ipv6=false 89 ;; 90 "c") 91 capture=true 92 ;; 93 "S") 94 if [ $OPTARG -ge 0 ];then 95 sndbuf="$OPTARG" 96 else 97 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2 98 exit 1 99 fi 100 ;; 101 "R") 102 if [ $OPTARG -ge 0 ];then 103 rcvbuf="$OPTARG" 104 else 105 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2 106 exit 1 107 fi 108 ;; 109 "m") 110 testmode="$OPTARG" 111 ;; 112 "f") 113 filesize="$OPTARG" 114 ;; 115 "t") 116 do_tcp=$((do_tcp+1)) 117 ;; 118 "C") 119 checksum=true 120 ;; 121 "?") 122 usage $0 123 exit 1 124 ;; 125 esac 126done 127 128sec=$(date +%s) 129rndh=$(printf %x $sec)-$(mktemp -u XXXXXX) 130ns1="ns1-$rndh" 131ns2="ns2-$rndh" 132ns3="ns3-$rndh" 133ns4="ns4-$rndh" 134 135TEST_COUNT=0 136TEST_GROUP="" 137 138# This function is used in the cleanup trap 139#shellcheck disable=SC2317 140cleanup() 141{ 142 rm -f "$cin_disconnect" "$cout_disconnect" 143 rm -f "$cin" "$cout" 144 rm -f "$sin" "$sout" 145 rm -f "$capout" 146 147 local netns 148 for netns in "$ns1" "$ns2" "$ns3" "$ns4";do 149 ip netns del $netns 150 rm -f /tmp/$netns.{nstat,out} 151 done 152} 153 154mptcp_lib_check_mptcp 155mptcp_lib_check_kallsyms 156 157ip -Version > /dev/null 2>&1 158if [ $? -ne 0 ];then 159 echo "SKIP: Could not run test without ip tool" 160 exit $ksft_skip 161fi 162 163sin=$(mktemp) 164sout=$(mktemp) 165cin=$(mktemp) 166cout=$(mktemp) 167capout=$(mktemp) 168cin_disconnect="$cin".disconnect 169cout_disconnect="$cout".disconnect 170trap cleanup EXIT 171 172for i in "$ns1" "$ns2" "$ns3" "$ns4";do 173 ip netns add $i || exit $ksft_skip 174 ip -net $i link set lo up 175done 176 177# "$ns1" ns2 ns3 ns4 178# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 179# - drop 1% -> reorder 25% 180# <- TSO off - 181 182ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 183ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 184ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 185 186ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 187ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 188 189ip -net "$ns1" link set ns1eth2 up 190ip -net "$ns1" route add default via 10.0.1.2 191ip -net "$ns1" route add default via dead:beef:1::2 192 193ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 194ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 195ip -net "$ns2" link set ns2eth1 up 196 197ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 198ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 199ip -net "$ns2" link set ns2eth3 up 200ip -net "$ns2" route add default via 10.0.2.2 201ip -net "$ns2" route add default via dead:beef:2::2 202ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 203ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 204 205ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 206ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 207ip -net "$ns3" link set ns3eth2 up 208 209ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 210ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 211ip -net "$ns3" link set ns3eth4 up 212ip -net "$ns3" route add default via 10.0.2.1 213ip -net "$ns3" route add default via dead:beef:2::1 214ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 215ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 216 217ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 218ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 219ip -net "$ns4" link set ns4eth3 up 220ip -net "$ns4" route add default via 10.0.3.2 221ip -net "$ns4" route add default via dead:beef:3::2 222 223if $checksum; then 224 for i in "$ns1" "$ns2" "$ns3" "$ns4";do 225 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1 226 done 227fi 228 229set_ethtool_flags() { 230 local ns="$1" 231 local dev="$2" 232 local flags="$3" 233 234 if ip netns exec $ns ethtool -K $dev $flags 2>/dev/null; then 235 echo "INFO: set $ns dev $dev: ethtool -K $flags" 236 fi 237} 238 239set_random_ethtool_flags() { 240 local flags="" 241 local r=$RANDOM 242 243 local pick1=$((r & 1)) 244 local pick2=$((r & 2)) 245 local pick3=$((r & 4)) 246 247 [ $pick1 -ne 0 ] && flags="tso off" 248 [ $pick2 -ne 0 ] && flags="$flags gso off" 249 [ $pick3 -ne 0 ] && flags="$flags gro off" 250 251 [ -z "$flags" ] && return 252 253 set_ethtool_flags "$1" "$2" "$flags" 254} 255 256if $ethtool_random_on;then 257 set_random_ethtool_flags "$ns3" ns3eth2 258 set_random_ethtool_flags "$ns4" ns4eth3 259else 260 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 261 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 262fi 263 264print_file_err() 265{ 266 ls -l "$1" 1>&2 267 echo "Trailing bytes are: " 268 tail -c 27 "$1" 269} 270 271check_transfer() 272{ 273 local in=$1 274 local out=$2 275 local what=$3 276 277 cmp "$in" "$out" > /dev/null 2>&1 278 if [ $? -ne 0 ] ;then 279 echo "[ FAIL ] $what does not match (in, out):" 280 print_file_err "$in" 281 print_file_err "$out" 282 283 return 1 284 fi 285 286 return 0 287} 288 289check_mptcp_disabled() 290{ 291 local disabled_ns="ns_disabled-$rndh" 292 ip netns add ${disabled_ns} || exit $ksft_skip 293 294 # net.mptcp.enabled should be enabled by default 295 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 296 echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]" 297 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" 298 ret=1 299 return 1 300 fi 301 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 302 303 local err=0 304 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 305 grep -q "^socket: Protocol not available$" && err=1 306 ip netns delete ${disabled_ns} 307 308 if [ ${err} -eq 0 ]; then 309 echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" 310 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" 311 ret=1 312 return 1 313 fi 314 315 echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" 316 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" 317 return 0 318} 319 320do_ping() 321{ 322 local listener_ns="$1" 323 local connector_ns="$2" 324 local connect_addr="$3" 325 local ping_args="-q -c 1" 326 local rc=0 327 328 if mptcp_lib_is_v6 "${connect_addr}"; then 329 $ipv6 || return 0 330 ping_args="${ping_args} -6" 331 fi 332 333 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 334 335 if [ $rc -ne 0 ] ; then 336 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 337 ret=1 338 339 return 1 340 fi 341 342 return 0 343} 344 345do_transfer() 346{ 347 local listener_ns="$1" 348 local connector_ns="$2" 349 local cl_proto="$3" 350 local srv_proto="$4" 351 local connect_addr="$5" 352 local local_addr="$6" 353 local extra_args="$7" 354 355 local port 356 port=$((10000+TEST_COUNT)) 357 TEST_COUNT=$((TEST_COUNT+1)) 358 359 if [ "$rcvbuf" -gt 0 ]; then 360 extra_args+=" -R $rcvbuf" 361 fi 362 363 if [ "$sndbuf" -gt 0 ]; then 364 extra_args+=" -S $sndbuf" 365 fi 366 367 if [ -n "$testmode" ]; then 368 extra_args+=" -m $testmode" 369 fi 370 371 if [ -n "$extra_args" ] && $options_log; then 372 echo "INFO: extra options: $extra_args" 373 fi 374 options_log=false 375 376 :> "$cout" 377 :> "$sout" 378 :> "$capout" 379 380 local addr_port 381 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 382 local result_msg 383 result_msg="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 384 printf "%s\t" "${result_msg}" 385 386 if $capture; then 387 local capuser 388 if [ -z $SUDO_USER ] ; then 389 capuser="" 390 else 391 capuser="-Z $SUDO_USER" 392 fi 393 394 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 395 local capopt="-i any -s 65535 -B 32768 ${capuser}" 396 397 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 398 local cappid_listener=$! 399 400 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 401 local cappid_connector=$! 402 403 sleep 1 404 fi 405 406 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 407 nstat -n 408 if [ ${listener_ns} != ${connector_ns} ]; then 409 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 410 nstat -n 411 fi 412 413 local stat_synrx_last_l 414 local stat_ackrx_last_l 415 local stat_cookietx_last 416 local stat_cookierx_last 417 local stat_csum_err_s 418 local stat_csum_err_c 419 local stat_tcpfb_last_l 420 stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 421 stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 422 stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 423 stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 424 stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 425 stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 426 stat_tcpfb_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 427 428 timeout ${timeout_test} \ 429 ip netns exec ${listener_ns} \ 430 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 431 $extra_args $local_addr < "$sin" > "$sout" & 432 local spid=$! 433 434 mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}" 435 436 local start 437 start=$(date +%s%3N) 438 timeout ${timeout_test} \ 439 ip netns exec ${connector_ns} \ 440 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 441 $extra_args $connect_addr < "$cin" > "$cout" & 442 local cpid=$! 443 444 wait $cpid 445 local retc=$? 446 wait $spid 447 local rets=$? 448 449 local stop 450 stop=$(date +%s%3N) 451 452 if $capture; then 453 sleep 1 454 kill ${cappid_listener} 455 kill ${cappid_connector} 456 fi 457 458 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 459 nstat | grep Tcp > /tmp/${listener_ns}.out 460 if [ ${listener_ns} != ${connector_ns} ]; then 461 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 462 nstat | grep Tcp > /tmp/${connector_ns}.out 463 fi 464 465 local duration 466 duration=$((stop-start)) 467 result_msg+=" # time=${duration}ms" 468 printf "(duration %05sms) " "${duration}" 469 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 470 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 471 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 472 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 473 cat /tmp/${listener_ns}.out 474 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 475 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 476 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 477 478 echo 479 cat "$capout" 480 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 481 return 1 482 fi 483 484 check_transfer $sin $cout "file received by client" 485 retc=$? 486 check_transfer $cin $sout "file received by server" 487 rets=$? 488 489 local extra="" 490 local stat_synrx_now_l 491 local stat_ackrx_now_l 492 local stat_cookietx_now 493 local stat_cookierx_now 494 local stat_ooo_now 495 local stat_tcpfb_now_l 496 stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 497 stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 498 stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 499 stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 500 stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 501 stat_tcpfb_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 502 503 expect_synrx=$((stat_synrx_last_l)) 504 expect_ackrx=$((stat_ackrx_last_l)) 505 506 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 507 cookies=${cookies##*=} 508 509 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 510 expect_synrx=$((stat_synrx_last_l+connect_per_transfer)) 511 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer)) 512 fi 513 514 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 515 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ 516 "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 517 retc=1 518 fi 519 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then 520 if [ ${stat_ooo_now} -eq 0 ]; then 521 printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ 522 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 523 rets=1 524 else 525 extra+=" [ Note ] fallback due to TCP OoO" 526 fi 527 fi 528 529 if $checksum; then 530 local csum_err_s 531 local csum_err_c 532 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 533 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 534 535 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 536 if [ $csum_err_s_nr -gt 0 ]; then 537 printf "[ FAIL ]\nserver got %d data checksum error[s]" ${csum_err_s_nr} 538 rets=1 539 fi 540 541 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 542 if [ $csum_err_c_nr -gt 0 ]; then 543 printf "[ FAIL ]\nclient got %d data checksum error[s]" ${csum_err_c_nr} 544 retc=1 545 fi 546 fi 547 548 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then 549 mptcp_lib_pr_fail "unexpected fallback to TCP" 550 rets=1 551 fi 552 553 if [ $cookies -eq 2 ];then 554 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 555 extra+=" WARN: CookieSent: did not advance" 556 fi 557 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 558 extra+=" WARN: CookieRecv: did not advance" 559 fi 560 else 561 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 562 extra+=" WARN: CookieSent: changed" 563 fi 564 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 565 extra+=" WARN: CookieRecv: changed" 566 fi 567 fi 568 569 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 570 extra+=" WARN: SYNRX: expect ${expect_synrx}," 571 extra+=" got ${stat_synrx_now_l} (probably retransmissions)" 572 fi 573 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 574 extra+=" WARN: ACKRX: expect ${expect_ackrx}," 575 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)" 576 fi 577 578 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 579 printf "[ OK ]%s\n" "${extra}" 580 mptcp_lib_result_pass "${TEST_GROUP}: ${result_msg}" 581 else 582 if [ -n "${extra}" ]; then 583 printf "%s\n" "${extra:1}" 584 fi 585 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 586 fi 587 588 cat "$capout" 589 [ $retc -eq 0 ] && [ $rets -eq 0 ] 590} 591 592make_file() 593{ 594 local name=$1 595 local who=$2 596 local SIZE=$filesize 597 local ksize 598 local rem 599 600 if [ $SIZE -eq 0 ]; then 601 local MAXSIZE=$((1024 * 1024 * 8)) 602 local MINSIZE=$((1024 * 256)) 603 604 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 605 fi 606 607 ksize=$((SIZE / 1024)) 608 rem=$((SIZE - (ksize * 1024))) 609 610 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 611 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 612 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 613 614 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 615} 616 617run_tests_lo() 618{ 619 local listener_ns="$1" 620 local connector_ns="$2" 621 local connect_addr="$3" 622 local loopback="$4" 623 local extra_args="$5" 624 local lret=0 625 626 # skip if test programs are running inside same netns for subsequent runs. 627 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 628 return 0 629 fi 630 631 # skip if we don't want v6 632 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 633 return 0 634 fi 635 636 local local_addr 637 if mptcp_lib_is_v6 "${connect_addr}"; then 638 local_addr="::" 639 else 640 local_addr="0.0.0.0" 641 fi 642 643 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 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 if [ $do_tcp -eq 0 ]; then 652 # don't bother testing fallback tcp except for loopback case. 653 if [ ${listener_ns} != ${connector_ns} ]; then 654 return 0 655 fi 656 fi 657 658 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 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 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 667 ${connect_addr} ${local_addr} "${extra_args}" 668 lret=$? 669 if [ $lret -ne 0 ]; then 670 ret=$lret 671 return 1 672 fi 673 674 if [ $do_tcp -gt 1 ] ;then 675 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 676 ${connect_addr} ${local_addr} "${extra_args}" 677 lret=$? 678 if [ $lret -ne 0 ]; then 679 ret=$lret 680 return 1 681 fi 682 fi 683 684 return 0 685} 686 687run_tests() 688{ 689 run_tests_lo $1 $2 $3 0 690} 691 692run_test_transparent() 693{ 694 local connect_addr="$1" 695 local msg="$2" 696 697 local connector_ns="$ns1" 698 local listener_ns="$ns2" 699 local lret=0 700 local r6flag="" 701 702 TEST_GROUP="${msg}" 703 704 # skip if we don't want v6 705 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 706 return 0 707 fi 708 709 # IP(V6)_TRANSPARENT has been added after TOS support which came with 710 # the required infrastructure in MPTCP sockopt code. To support TOS, the 711 # following function has been exported (T). Not great but better than 712 # checking for a specific kernel version. 713 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 714 echo "INFO: ${msg} not supported by the kernel: SKIP" 715 mptcp_lib_result_skip "${TEST_GROUP}" 716 return 717 fi 718 719 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 720flush ruleset 721table inet mangle { 722 chain divert { 723 type filter hook prerouting priority -150; 724 725 meta l4proto tcp socket transparent 1 meta mark set 1 accept 726 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 727 } 728} 729EOF 730 then 731 echo "SKIP: $msg, could not load nft ruleset" 732 mptcp_lib_fail_if_expected_feature "nft rules" 733 mptcp_lib_result_skip "${TEST_GROUP}" 734 return 735 fi 736 737 local local_addr 738 if mptcp_lib_is_v6 "${connect_addr}"; then 739 local_addr="::" 740 r6flag="-6" 741 else 742 local_addr="0.0.0.0" 743 fi 744 745 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then 746 ip netns exec "$listener_ns" nft flush ruleset 747 echo "SKIP: $msg, ip $r6flag rule failed" 748 mptcp_lib_fail_if_expected_feature "ip rule" 749 mptcp_lib_result_skip "${TEST_GROUP}" 750 return 751 fi 752 753 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then 754 ip netns exec "$listener_ns" nft flush ruleset 755 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 756 echo "SKIP: $msg, ip route add local $local_addr failed" 757 mptcp_lib_fail_if_expected_feature "ip route" 758 mptcp_lib_result_skip "${TEST_GROUP}" 759 return 760 fi 761 762 echo "INFO: test $msg" 763 764 TEST_COUNT=10000 765 local extra_args="-o TRANSPARENT" 766 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 767 ${connect_addr} ${local_addr} "${extra_args}" 768 lret=$? 769 770 ip netns exec "$listener_ns" nft flush ruleset 771 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 772 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 773 774 if [ $lret -ne 0 ]; then 775 echo "FAIL: $msg, mptcp connection error" 1>&2 776 ret=$lret 777 return 1 778 fi 779 780 echo "PASS: $msg" 781 return 0 782} 783 784run_tests_peekmode() 785{ 786 local peekmode="$1" 787 788 TEST_GROUP="peek mode: ${peekmode}" 789 echo "INFO: with peek mode: ${peekmode}" 790 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 791 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 792} 793 794run_tests_mptfo() 795{ 796 TEST_GROUP="MPTFO" 797 798 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 799 echo "INFO: TFO not supported by the kernel: SKIP" 800 mptcp_lib_result_skip "${TEST_GROUP}" 801 return 802 fi 803 804 echo "INFO: with MPTFO start" 805 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 806 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 807 808 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 809 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 810 811 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 812 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 813 814 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 815 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 816 echo "INFO: with MPTFO end" 817} 818 819run_tests_disconnect() 820{ 821 local old_cin=$cin 822 local old_sin=$sin 823 824 TEST_GROUP="full disconnect" 825 826 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 827 echo "INFO: Full disconnect not supported: SKIP" 828 mptcp_lib_result_skip "${TEST_GROUP}" 829 return 830 fi 831 832 cat $cin $cin $cin > "$cin".disconnect 833 834 # force do_transfer to cope with the multiple transmissions 835 sin="$cin.disconnect" 836 cin="$cin.disconnect" 837 cin_disconnect="$old_cin" 838 connect_per_transfer=3 839 840 echo "INFO: disconnect" 841 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 842 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 843 844 # restore previous status 845 sin=$old_sin 846 cin=$old_cin 847 cin_disconnect="$cin".disconnect 848 connect_per_transfer=1 849} 850 851display_time() 852{ 853 time_end=$(date +%s) 854 time_run=$((time_end-time_start)) 855 856 echo "Time: ${time_run} seconds" 857} 858 859log_if_error() 860{ 861 local msg="$1" 862 863 if [ ${ret} -ne 0 ]; then 864 echo "FAIL: ${msg}" 1>&2 865 866 final_ret=${ret} 867 ret=0 868 869 return ${final_ret} 870 fi 871} 872 873stop_if_error() 874{ 875 if ! log_if_error "${@}"; then 876 display_time 877 mptcp_lib_result_print_all_tap 878 exit ${final_ret} 879 fi 880} 881 882make_file "$cin" "client" 883make_file "$sin" "server" 884 885check_mptcp_disabled 886 887stop_if_error "The kernel configuration is not valid for MPTCP" 888 889echo "INFO: validating network environment with pings" 890for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 891 do_ping "$ns1" $sender 10.0.1.1 892 do_ping "$ns1" $sender dead:beef:1::1 893 894 do_ping "$ns2" $sender 10.0.1.2 895 do_ping "$ns2" $sender dead:beef:1::2 896 do_ping "$ns2" $sender 10.0.2.1 897 do_ping "$ns2" $sender dead:beef:2::1 898 899 do_ping "$ns3" $sender 10.0.2.2 900 do_ping "$ns3" $sender dead:beef:2::2 901 do_ping "$ns3" $sender 10.0.3.2 902 do_ping "$ns3" $sender dead:beef:3::2 903 904 do_ping "$ns4" $sender 10.0.3.1 905 do_ping "$ns4" $sender dead:beef:3::1 906done 907 908mptcp_lib_result_code "${ret}" "ping tests" 909 910stop_if_error "Could not even run ping tests" 911 912[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 913tc_info="loss of $tc_loss " 914test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms " 915 916reorder_delay=$((tc_delay / 4)) 917 918if [ -z "${tc_reorder}" ]; then 919 reorder1=$((RANDOM%10)) 920 reorder1=$((100 - reorder1)) 921 reorder2=$((RANDOM%100)) 922 923 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 924 tc_reorder="reorder ${reorder1}% ${reorder2}%" 925 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 926 fi 927elif [ "$tc_reorder" = "0" ];then 928 tc_reorder="" 929elif [ "$reorder_delay" -gt 0 ];then 930 # reordering requires some delay 931 tc_reorder="reorder $tc_reorder" 932 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 933fi 934 935echo "INFO: Using ${tc_info}on ns3eth4" 936 937tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 938 939TEST_GROUP="loopback v4" 940run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 941stop_if_error "Could not even run loopback test" 942 943TEST_GROUP="loopback v6" 944run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 945stop_if_error "Could not even run loopback v6 test" 946 947TEST_GROUP="multihosts" 948for sender in $ns1 $ns2 $ns3 $ns4;do 949 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 950 # mptcp syncookie support. 951 if [ $sender = $ns1 ]; then 952 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 953 else 954 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 955 fi 956 957 run_tests "$ns1" $sender 10.0.1.1 958 run_tests "$ns1" $sender dead:beef:1::1 959 960 run_tests "$ns2" $sender 10.0.1.2 961 run_tests "$ns2" $sender dead:beef:1::2 962 run_tests "$ns2" $sender 10.0.2.1 963 run_tests "$ns2" $sender dead:beef:2::1 964 965 run_tests "$ns3" $sender 10.0.2.2 966 run_tests "$ns3" $sender dead:beef:2::2 967 run_tests "$ns3" $sender 10.0.3.2 968 run_tests "$ns3" $sender dead:beef:3::2 969 970 run_tests "$ns4" $sender 10.0.3.1 971 run_tests "$ns4" $sender dead:beef:3::1 972 973 log_if_error "Tests with $sender as a sender have failed" 974done 975 976run_tests_peekmode "saveWithPeek" 977run_tests_peekmode "saveAfterPeek" 978log_if_error "Tests with peek mode have failed" 979 980# MPTFO (MultiPath TCP Fatopen tests) 981run_tests_mptfo 982log_if_error "Tests with MPTFO have failed" 983 984# connect to ns4 ip address, ns2 should intercept/proxy 985run_test_transparent 10.0.3.1 "tproxy ipv4" 986run_test_transparent dead:beef:3::1 "tproxy ipv6" 987log_if_error "Tests with tproxy have failed" 988 989run_tests_disconnect 990log_if_error "Tests of the full disconnection have failed" 991 992display_time 993mptcp_lib_result_print_all_tap 994exit ${final_ret} 995