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 ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 379 local cappid_listener=$! 380 381 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 382 local cappid_connector=$! 383 384 sleep 1 385 fi 386 387 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 388 nstat -n 389 if [ ${listener_ns} != ${connector_ns} ]; then 390 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 391 nstat -n 392 fi 393 394 local stat_synrx_last_l 395 local stat_ackrx_last_l 396 local stat_cookietx_last 397 local stat_cookierx_last 398 local stat_csum_err_s 399 local stat_csum_err_c 400 local stat_tcpfb_last_l 401 stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 402 stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 403 stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 404 stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 405 stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 406 stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 407 stat_tcpfb_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 408 409 timeout ${timeout_test} \ 410 ip netns exec ${listener_ns} \ 411 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 412 $extra_args $local_addr < "$sin" > "$sout" & 413 local spid=$! 414 415 mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}" 416 417 local start 418 start=$(date +%s%3N) 419 timeout ${timeout_test} \ 420 ip netns exec ${connector_ns} \ 421 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 422 $extra_args $connect_addr < "$cin" > "$cout" & 423 local cpid=$! 424 425 wait $cpid 426 local retc=$? 427 wait $spid 428 local rets=$? 429 430 local stop 431 stop=$(date +%s%3N) 432 433 if $capture; then 434 sleep 1 435 kill ${cappid_listener} 436 kill ${cappid_connector} 437 fi 438 439 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 440 nstat | grep Tcp > /tmp/${listener_ns}.out 441 if [ ${listener_ns} != ${connector_ns} ]; then 442 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 443 nstat | grep Tcp > /tmp/${connector_ns}.out 444 fi 445 446 local duration 447 duration=$((stop-start)) 448 printf "(duration %05sms) " "${duration}" 449 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 450 mptcp_lib_pr_fail "client exit code $retc, server $rets" 451 mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}" \ 452 "/tmp/${listener_ns}.out" "/tmp/${connector_ns}.out" 453 454 echo 455 cat "$capout" 456 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 457 return 1 458 fi 459 460 mptcp_lib_check_transfer $sin $cout "file received by client" 461 retc=$? 462 mptcp_lib_check_transfer $cin $sout "file received by server" 463 rets=$? 464 465 local extra="" 466 local stat_synrx_now_l 467 local stat_ackrx_now_l 468 local stat_cookietx_now 469 local stat_cookierx_now 470 local stat_ooo_now 471 local stat_tcpfb_now_l 472 stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 473 stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 474 stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 475 stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 476 stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 477 stat_tcpfb_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 478 479 expect_synrx=$((stat_synrx_last_l)) 480 expect_ackrx=$((stat_ackrx_last_l)) 481 482 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 483 cookies=${cookies##*=} 484 485 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 486 expect_synrx=$((stat_synrx_last_l+connect_per_transfer)) 487 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer)) 488 fi 489 490 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 491 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx_now_l})" \ 492 "than expected (${expect_synrx})" 493 retc=1 494 fi 495 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then 496 if [ ${stat_ooo_now} -eq 0 ]; then 497 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx_now_l})" \ 498 "than expected (${expect_ackrx})" 499 rets=1 500 else 501 extra+=" [ Note ] fallback due to TCP OoO" 502 fi 503 fi 504 505 if $checksum; then 506 local csum_err_s 507 local csum_err_c 508 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 509 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 510 511 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 512 if [ $csum_err_s_nr -gt 0 ]; then 513 mptcp_lib_pr_fail "server got ${csum_err_s_nr} data checksum error[s]" 514 rets=1 515 fi 516 517 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 518 if [ $csum_err_c_nr -gt 0 ]; then 519 mptcp_lib_pr_fail "client got ${csum_err_c_nr} data checksum error[s]" 520 retc=1 521 fi 522 fi 523 524 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then 525 mptcp_lib_pr_fail "unexpected fallback to TCP" 526 rets=1 527 fi 528 529 if [ $cookies -eq 2 ];then 530 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 531 extra+=" WARN: CookieSent: did not advance" 532 fi 533 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 534 extra+=" WARN: CookieRecv: did not advance" 535 fi 536 else 537 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 538 extra+=" WARN: CookieSent: changed" 539 fi 540 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 541 extra+=" WARN: CookieRecv: changed" 542 fi 543 fi 544 545 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 546 extra+=" WARN: SYNRX: expect ${expect_synrx}," 547 extra+=" got ${stat_synrx_now_l} (probably retransmissions)" 548 fi 549 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 550 extra+=" WARN: ACKRX: expect ${expect_ackrx}," 551 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)" 552 fi 553 554 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 555 mptcp_lib_pr_ok "${extra:1}" 556 mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}" 557 else 558 if [ -n "${extra}" ]; then 559 mptcp_lib_print_warn "${extra:1}" 560 fi 561 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 562 fi 563 564 cat "$capout" 565 [ $retc -eq 0 ] && [ $rets -eq 0 ] 566} 567 568make_file() 569{ 570 local name=$1 571 local who=$2 572 local SIZE=$filesize 573 local ksize 574 local rem 575 576 if [ $SIZE -eq 0 ]; then 577 local MAXSIZE=$((1024 * 1024 * 8)) 578 local MINSIZE=$((1024 * 256)) 579 580 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 581 fi 582 583 ksize=$((SIZE / 1024)) 584 rem=$((SIZE - (ksize * 1024))) 585 586 mptcp_lib_make_file $name 1024 $ksize 587 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null 588 589 echo "Created $name (size $(stat -c "%s" "$name") B) containing data sent by $who" 590} 591 592run_tests_lo() 593{ 594 local listener_ns="$1" 595 local connector_ns="$2" 596 local connect_addr="$3" 597 local loopback="$4" 598 local extra_args="$5" 599 local lret=0 600 601 # skip if test programs are running inside same netns for subsequent runs. 602 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 603 return 0 604 fi 605 606 # skip if we don't want v6 607 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 608 return 0 609 fi 610 611 local local_addr 612 if mptcp_lib_is_v6 "${connect_addr}"; then 613 local_addr="::" 614 else 615 local_addr="0.0.0.0" 616 fi 617 618 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 619 ${connect_addr} ${local_addr} "${extra_args}" 620 lret=$? 621 if [ $lret -ne 0 ]; then 622 ret=$lret 623 return 1 624 fi 625 626 if [ $do_tcp -eq 0 ]; then 627 # don't bother testing fallback tcp except for loopback case. 628 if [ ${listener_ns} != ${connector_ns} ]; then 629 return 0 630 fi 631 fi 632 633 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 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 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 642 ${connect_addr} ${local_addr} "${extra_args}" 643 lret=$? 644 if [ $lret -ne 0 ]; then 645 ret=$lret 646 return 1 647 fi 648 649 if [ $do_tcp -gt 1 ] ;then 650 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 651 ${connect_addr} ${local_addr} "${extra_args}" 652 lret=$? 653 if [ $lret -ne 0 ]; then 654 ret=$lret 655 return 1 656 fi 657 fi 658 659 return 0 660} 661 662run_tests() 663{ 664 run_tests_lo $1 $2 $3 0 665} 666 667run_test_transparent() 668{ 669 local connect_addr="$1" 670 local msg="$2" 671 672 local connector_ns="$ns1" 673 local listener_ns="$ns2" 674 local lret=0 675 local r6flag="" 676 677 TEST_GROUP="${msg}" 678 679 # skip if we don't want v6 680 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 681 return 0 682 fi 683 684 # IP(V6)_TRANSPARENT has been added after TOS support which came with 685 # the required infrastructure in MPTCP sockopt code. To support TOS, the 686 # following function has been exported (T). Not great but better than 687 # checking for a specific kernel version. 688 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 689 mptcp_lib_pr_skip "${msg} not supported by the kernel" 690 mptcp_lib_result_skip "${TEST_GROUP}" 691 return 692 fi 693 694 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 695flush ruleset 696table inet mangle { 697 chain divert { 698 type filter hook prerouting priority -150; 699 700 meta l4proto tcp socket transparent 1 meta mark set 1 accept 701 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 702 } 703} 704EOF 705 then 706 mptcp_lib_pr_skip "$msg, could not load nft ruleset" 707 mptcp_lib_fail_if_expected_feature "nft rules" 708 mptcp_lib_result_skip "${TEST_GROUP}" 709 return 710 fi 711 712 local local_addr 713 if mptcp_lib_is_v6 "${connect_addr}"; then 714 local_addr="::" 715 r6flag="-6" 716 else 717 local_addr="0.0.0.0" 718 fi 719 720 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then 721 ip netns exec "$listener_ns" nft flush ruleset 722 mptcp_lib_pr_skip "$msg, ip $r6flag rule failed" 723 mptcp_lib_fail_if_expected_feature "ip rule" 724 mptcp_lib_result_skip "${TEST_GROUP}" 725 return 726 fi 727 728 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then 729 ip netns exec "$listener_ns" nft flush ruleset 730 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 731 mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed" 732 mptcp_lib_fail_if_expected_feature "ip route" 733 mptcp_lib_result_skip "${TEST_GROUP}" 734 return 735 fi 736 737 mptcp_lib_pr_info "test $msg" 738 739 port=$((20000 - 1)) 740 local extra_args="-o TRANSPARENT" 741 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 742 ${connect_addr} ${local_addr} "${extra_args}" 743 lret=$? 744 745 ip netns exec "$listener_ns" nft flush ruleset 746 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 747 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 748 749 if [ $lret -ne 0 ]; then 750 mptcp_lib_pr_fail "$msg, mptcp connection error" 751 ret=$lret 752 return 1 753 fi 754 755 mptcp_lib_pr_info "$msg pass" 756 return 0 757} 758 759run_tests_peekmode() 760{ 761 local peekmode="$1" 762 763 TEST_GROUP="peek mode: ${peekmode}" 764 mptcp_lib_pr_info "with peek mode: ${peekmode}" 765 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 766 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 767} 768 769run_tests_mptfo() 770{ 771 TEST_GROUP="MPTFO" 772 773 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 774 mptcp_lib_pr_skip "TFO not supported by the kernel" 775 mptcp_lib_result_skip "${TEST_GROUP}" 776 return 777 fi 778 779 mptcp_lib_pr_info "with MPTFO start" 780 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 781 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 782 783 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 784 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 785 786 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 787 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 788 789 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 790 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 791 mptcp_lib_pr_info "with MPTFO end" 792} 793 794run_tests_disconnect() 795{ 796 local old_cin=$cin 797 local old_sin=$sin 798 799 TEST_GROUP="full disconnect" 800 801 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 802 mptcp_lib_pr_skip "Full disconnect not supported" 803 mptcp_lib_result_skip "${TEST_GROUP}" 804 return 805 fi 806 807 cat $cin $cin $cin > "$cin".disconnect 808 809 # force do_transfer to cope with the multiple transmissions 810 sin="$cin.disconnect" 811 cin="$cin.disconnect" 812 cin_disconnect="$old_cin" 813 connect_per_transfer=3 814 815 mptcp_lib_pr_info "disconnect" 816 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 817 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 818 819 # restore previous status 820 sin=$old_sin 821 cin=$old_cin 822 cin_disconnect="$cin".disconnect 823 connect_per_transfer=1 824} 825 826display_time() 827{ 828 time_end=$(date +%s) 829 time_run=$((time_end-time_start)) 830 831 echo "Time: ${time_run} seconds" 832} 833 834log_if_error() 835{ 836 local msg="$1" 837 838 if [ ${ret} -ne 0 ]; then 839 mptcp_lib_pr_fail "${msg}" 840 841 final_ret=${ret} 842 ret=${KSFT_PASS} 843 844 return ${final_ret} 845 fi 846} 847 848stop_if_error() 849{ 850 if ! log_if_error "${@}"; then 851 display_time 852 mptcp_lib_result_print_all_tap 853 exit ${final_ret} 854 fi 855} 856 857make_file "$cin" "client" 858make_file "$sin" "server" 859 860mptcp_lib_subtests_last_ts_reset 861 862check_mptcp_disabled 863 864stop_if_error "The kernel configuration is not valid for MPTCP" 865 866print_larger_title "Validating network environment with pings" 867for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 868 do_ping "$ns1" $sender 10.0.1.1 869 do_ping "$ns1" $sender dead:beef:1::1 870 871 do_ping "$ns2" $sender 10.0.1.2 872 do_ping "$ns2" $sender dead:beef:1::2 873 do_ping "$ns2" $sender 10.0.2.1 874 do_ping "$ns2" $sender dead:beef:2::1 875 876 do_ping "$ns3" $sender 10.0.2.2 877 do_ping "$ns3" $sender dead:beef:2::2 878 do_ping "$ns3" $sender 10.0.3.2 879 do_ping "$ns3" $sender dead:beef:3::2 880 881 do_ping "$ns4" $sender 10.0.3.1 882 do_ping "$ns4" $sender dead:beef:3::1 883done 884 885mptcp_lib_result_code "${ret}" "ping tests" 886 887stop_if_error "Could not even run ping tests" 888mptcp_lib_pr_ok 889 890[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 891tc_info="loss of $tc_loss " 892test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms " 893 894reorder_delay=$((tc_delay / 4)) 895 896if [ -z "${tc_reorder}" ]; then 897 reorder1=$((RANDOM%10)) 898 reorder1=$((100 - reorder1)) 899 reorder2=$((RANDOM%100)) 900 901 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 902 tc_reorder="reorder ${reorder1}% ${reorder2}%" 903 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 904 fi 905elif [ "$tc_reorder" = "0" ];then 906 tc_reorder="" 907elif [ "$reorder_delay" -gt 0 ];then 908 # reordering requires some delay 909 tc_reorder="reorder $tc_reorder" 910 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 911fi 912 913mptcp_lib_pr_info "Using ${tc_info}on ns3eth4" 914 915tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 916 917TEST_GROUP="loopback v4" 918run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 919stop_if_error "Could not even run loopback test" 920 921TEST_GROUP="loopback v6" 922run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 923stop_if_error "Could not even run loopback v6 test" 924 925TEST_GROUP="multihosts" 926for sender in $ns1 $ns2 $ns3 $ns4;do 927 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 928 # mptcp syncookie support. 929 if [ $sender = $ns1 ]; then 930 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 931 else 932 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 933 fi 934 935 run_tests "$ns1" $sender 10.0.1.1 936 run_tests "$ns1" $sender dead:beef:1::1 937 938 run_tests "$ns2" $sender 10.0.1.2 939 run_tests "$ns2" $sender dead:beef:1::2 940 run_tests "$ns2" $sender 10.0.2.1 941 run_tests "$ns2" $sender dead:beef:2::1 942 943 run_tests "$ns3" $sender 10.0.2.2 944 run_tests "$ns3" $sender dead:beef:2::2 945 run_tests "$ns3" $sender 10.0.3.2 946 run_tests "$ns3" $sender dead:beef:3::2 947 948 run_tests "$ns4" $sender 10.0.3.1 949 run_tests "$ns4" $sender dead:beef:3::1 950 951 log_if_error "Tests with $sender as a sender have failed" 952done 953 954run_tests_peekmode "saveWithPeek" 955run_tests_peekmode "saveAfterPeek" 956log_if_error "Tests with peek mode have failed" 957 958# MPTFO (MultiPath TCP Fatopen tests) 959run_tests_mptfo 960log_if_error "Tests with MPTFO have failed" 961 962# connect to ns4 ip address, ns2 should intercept/proxy 963run_test_transparent 10.0.3.1 "tproxy ipv4" 964run_test_transparent dead:beef:3::1 "tproxy ipv6" 965log_if_error "Tests with tproxy have failed" 966 967run_tests_disconnect 968log_if_error "Tests of the full disconnection have failed" 969 970display_time 971mptcp_lib_result_print_all_tap 972exit ${final_ret} 973