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 ${KSFT_FAIL} 125 ;; 126 esac 127done 128 129ns1="" 130ns2="" 131ns3="" 132ns4="" 133 134TEST_GROUP="" 135 136# This function is used in the cleanup trap 137#shellcheck disable=SC2317 138cleanup() 139{ 140 rm -f "$cin_disconnect" "$cout_disconnect" 141 rm -f "$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 158cout_disconnect="$cout".disconnect 159trap cleanup EXIT 160 161mptcp_lib_ns_init ns1 ns2 ns3 ns4 162 163# "$ns1" ns2 ns3 ns4 164# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 165# - drop 1% -> reorder 25% 166# <- TSO off - 167 168ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 169ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 170ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 171 172ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 173ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 174 175ip -net "$ns1" link set ns1eth2 up 176ip -net "$ns1" route add default via 10.0.1.2 177ip -net "$ns1" route add default via dead:beef:1::2 178 179ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 180ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 181ip -net "$ns2" link set ns2eth1 up 182 183ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 184ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 185ip -net "$ns2" link set ns2eth3 up 186ip -net "$ns2" route add default via 10.0.2.2 187ip -net "$ns2" route add default via dead:beef:2::2 188ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 189ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 190 191ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 192ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 193ip -net "$ns3" link set ns3eth2 up 194 195ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 196ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 197ip -net "$ns3" link set ns3eth4 up 198ip -net "$ns3" route add default via 10.0.2.1 199ip -net "$ns3" route add default via dead:beef:2::1 200ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 201ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 202 203ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 204ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 205ip -net "$ns4" link set ns4eth3 up 206ip -net "$ns4" route add default via 10.0.3.2 207ip -net "$ns4" route add default via dead:beef:3::2 208 209if $checksum; then 210 for i in "$ns1" "$ns2" "$ns3" "$ns4";do 211 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1 212 done 213fi 214 215set_ethtool_flags() { 216 local ns="$1" 217 local dev="$2" 218 local flags="$3" 219 220 if ip netns exec $ns ethtool -K $dev $flags 2>/dev/null; then 221 mptcp_lib_pr_info "set $ns dev $dev: ethtool -K $flags" 222 fi 223} 224 225set_random_ethtool_flags() { 226 local flags="" 227 local r=$RANDOM 228 229 local pick1=$((r & 1)) 230 local pick2=$((r & 2)) 231 local pick3=$((r & 4)) 232 233 [ $pick1 -ne 0 ] && flags="tso off" 234 [ $pick2 -ne 0 ] && flags="$flags gso off" 235 [ $pick3 -ne 0 ] && flags="$flags gro off" 236 237 [ -z "$flags" ] && return 238 239 set_ethtool_flags "$1" "$2" "$flags" 240} 241 242if $ethtool_random_on;then 243 set_random_ethtool_flags "$ns3" ns3eth2 244 set_random_ethtool_flags "$ns4" ns4eth3 245else 246 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 247 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 248fi 249 250print_larger_title() { 251 # here we don't have the time, a bit longer for the alignment 252 MPTCP_LIB_TEST_FORMAT="%02u %-69s" \ 253 mptcp_lib_print_title "${@}" 254} 255 256check_mptcp_disabled() 257{ 258 local disabled_ns 259 mptcp_lib_ns_init disabled_ns 260 261 print_larger_title "New MPTCP socket can be blocked via sysctl" 262 # net.mptcp.enabled should be enabled by default 263 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 264 mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default" 265 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" 266 ret=${KSFT_FAIL} 267 return 1 268 fi 269 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 270 271 local err=0 272 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 273 grep -q "^socket: Protocol not available$" && err=1 274 mptcp_lib_ns_exit "${disabled_ns}" 275 276 if [ ${err} -eq 0 ]; then 277 mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl" 278 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" 279 ret=${KSFT_FAIL} 280 return 1 281 fi 282 283 mptcp_lib_pr_ok 284 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" 285 return 0 286} 287 288do_ping() 289{ 290 local listener_ns="$1" 291 local connector_ns="$2" 292 local connect_addr="$3" 293 local ping_args="-q -c 1" 294 local rc=0 295 296 if mptcp_lib_is_v6 "${connect_addr}"; then 297 $ipv6 || return 0 298 ping_args="${ping_args} -6" 299 fi 300 301 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 302 303 if [ $rc -ne 0 ] ; then 304 mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity" 305 ret=${KSFT_FAIL} 306 307 return 1 308 fi 309 310 return 0 311} 312 313do_transfer() 314{ 315 local listener_ns="$1" 316 local connector_ns="$2" 317 local cl_proto="$3" 318 local srv_proto="$4" 319 local connect_addr="$5" 320 local local_addr="$6" 321 local extra_args="$7" 322 323 port=$((port + 1)) 324 325 if [ "$rcvbuf" -gt 0 ]; then 326 extra_args+=" -R $rcvbuf" 327 fi 328 329 if [ "$sndbuf" -gt 0 ]; then 330 extra_args+=" -S $sndbuf" 331 fi 332 333 if [ -n "$testmode" ]; then 334 extra_args+=" -m $testmode" 335 fi 336 337 if [ -n "$extra_args" ] && $options_log; then 338 mptcp_lib_pr_info "extra options: $extra_args" 339 fi 340 options_log=false 341 342 :> "$cout" 343 :> "$sout" 344 :> "$capout" 345 346 local addr_port 347 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 348 local result_msg 349 result_msg="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 350 mptcp_lib_print_title "${result_msg}" 351 352 if $capture; then 353 local capuser 354 local rndh="${connector_ns:4}" 355 if [ -z $SUDO_USER ] ; then 356 capuser="" 357 else 358 capuser="-Z $SUDO_USER" 359 fi 360 361 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 362 local capopt="-i any -s 65535 -B 32768 ${capuser}" 363 364 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 365 local cappid_listener=$! 366 367 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 368 local cappid_connector=$! 369 370 sleep 1 371 fi 372 373 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 374 nstat -n 375 if [ ${listener_ns} != ${connector_ns} ]; then 376 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 377 nstat -n 378 fi 379 380 local stat_synrx_last_l 381 local stat_ackrx_last_l 382 local stat_cookietx_last 383 local stat_cookierx_last 384 local stat_csum_err_s 385 local stat_csum_err_c 386 local stat_tcpfb_last_l 387 stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 388 stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 389 stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 390 stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 391 stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 392 stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 393 stat_tcpfb_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 394 395 timeout ${timeout_test} \ 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 timeout ${timeout_test} \ 406 ip netns exec ${connector_ns} \ 407 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 408 $extra_args $connect_addr < "$cin" > "$cout" & 409 local cpid=$! 410 411 wait $cpid 412 local retc=$? 413 wait $spid 414 local rets=$? 415 416 local stop 417 stop=$(date +%s%3N) 418 419 if $capture; then 420 sleep 1 421 kill ${cappid_listener} 422 kill ${cappid_connector} 423 fi 424 425 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 426 nstat | grep Tcp > /tmp/${listener_ns}.out 427 if [ ${listener_ns} != ${connector_ns} ]; then 428 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 429 nstat | grep Tcp > /tmp/${connector_ns}.out 430 fi 431 432 local duration 433 duration=$((stop-start)) 434 result_msg+=" # time=${duration}ms" 435 printf "(duration %05sms) " "${duration}" 436 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 437 mptcp_lib_pr_fail "client exit code $retc, server $rets" 438 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 439 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 440 cat /tmp/${listener_ns}.out 441 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 442 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 443 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 444 445 echo 446 cat "$capout" 447 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 448 return 1 449 fi 450 451 mptcp_lib_check_transfer $sin $cout "file received by client" 452 retc=$? 453 mptcp_lib_check_transfer $cin $sout "file received by server" 454 rets=$? 455 456 local extra="" 457 local stat_synrx_now_l 458 local stat_ackrx_now_l 459 local stat_cookietx_now 460 local stat_cookierx_now 461 local stat_ooo_now 462 local stat_tcpfb_now_l 463 stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 464 stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 465 stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 466 stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 467 stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 468 stat_tcpfb_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 469 470 expect_synrx=$((stat_synrx_last_l)) 471 expect_ackrx=$((stat_ackrx_last_l)) 472 473 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 474 cookies=${cookies##*=} 475 476 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 477 expect_synrx=$((stat_synrx_last_l+connect_per_transfer)) 478 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer)) 479 fi 480 481 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 482 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx_now_l})" \ 483 "than expected (${expect_synrx})" 484 retc=1 485 fi 486 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then 487 if [ ${stat_ooo_now} -eq 0 ]; then 488 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx_now_l})" \ 489 "than expected (${expect_ackrx})" 490 rets=1 491 else 492 extra+=" [ Note ] fallback due to TCP OoO" 493 fi 494 fi 495 496 if $checksum; then 497 local csum_err_s 498 local csum_err_c 499 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 500 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 501 502 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 503 if [ $csum_err_s_nr -gt 0 ]; then 504 mptcp_lib_pr_fail "server got ${csum_err_s_nr} data checksum error[s]" 505 rets=1 506 fi 507 508 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 509 if [ $csum_err_c_nr -gt 0 ]; then 510 mptcp_lib_pr_fail "client got ${csum_err_c_nr} data checksum error[s]" 511 retc=1 512 fi 513 fi 514 515 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then 516 mptcp_lib_pr_fail "unexpected fallback to TCP" 517 rets=1 518 fi 519 520 if [ $cookies -eq 2 ];then 521 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 522 extra+=" WARN: CookieSent: did not advance" 523 fi 524 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 525 extra+=" WARN: CookieRecv: did not advance" 526 fi 527 else 528 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 529 extra+=" WARN: CookieSent: changed" 530 fi 531 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 532 extra+=" WARN: CookieRecv: changed" 533 fi 534 fi 535 536 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 537 extra+=" WARN: SYNRX: expect ${expect_synrx}," 538 extra+=" got ${stat_synrx_now_l} (probably retransmissions)" 539 fi 540 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 541 extra+=" WARN: ACKRX: expect ${expect_ackrx}," 542 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)" 543 fi 544 545 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 546 mptcp_lib_pr_ok "${extra:1}" 547 mptcp_lib_result_pass "${TEST_GROUP}: ${result_msg}" 548 else 549 if [ -n "${extra}" ]; then 550 mptcp_lib_print_warn "${extra:1}" 551 fi 552 mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" 553 fi 554 555 cat "$capout" 556 [ $retc -eq 0 ] && [ $rets -eq 0 ] 557} 558 559make_file() 560{ 561 local name=$1 562 local who=$2 563 local SIZE=$filesize 564 local ksize 565 local rem 566 567 if [ $SIZE -eq 0 ]; then 568 local MAXSIZE=$((1024 * 1024 * 8)) 569 local MINSIZE=$((1024 * 256)) 570 571 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 572 fi 573 574 ksize=$((SIZE / 1024)) 575 rem=$((SIZE - (ksize * 1024))) 576 577 mptcp_lib_make_file $name 1024 $ksize 578 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null 579 580 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 581} 582 583run_tests_lo() 584{ 585 local listener_ns="$1" 586 local connector_ns="$2" 587 local connect_addr="$3" 588 local loopback="$4" 589 local extra_args="$5" 590 local lret=0 591 592 # skip if test programs are running inside same netns for subsequent runs. 593 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 594 return 0 595 fi 596 597 # skip if we don't want v6 598 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 599 return 0 600 fi 601 602 local local_addr 603 if mptcp_lib_is_v6 "${connect_addr}"; then 604 local_addr="::" 605 else 606 local_addr="0.0.0.0" 607 fi 608 609 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 610 ${connect_addr} ${local_addr} "${extra_args}" 611 lret=$? 612 if [ $lret -ne 0 ]; then 613 ret=$lret 614 return 1 615 fi 616 617 if [ $do_tcp -eq 0 ]; then 618 # don't bother testing fallback tcp except for loopback case. 619 if [ ${listener_ns} != ${connector_ns} ]; then 620 return 0 621 fi 622 fi 623 624 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 625 ${connect_addr} ${local_addr} "${extra_args}" 626 lret=$? 627 if [ $lret -ne 0 ]; then 628 ret=$lret 629 return 1 630 fi 631 632 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 633 ${connect_addr} ${local_addr} "${extra_args}" 634 lret=$? 635 if [ $lret -ne 0 ]; then 636 ret=$lret 637 return 1 638 fi 639 640 if [ $do_tcp -gt 1 ] ;then 641 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 642 ${connect_addr} ${local_addr} "${extra_args}" 643 lret=$? 644 if [ $lret -ne 0 ]; then 645 ret=$lret 646 return 1 647 fi 648 fi 649 650 return 0 651} 652 653run_tests() 654{ 655 run_tests_lo $1 $2 $3 0 656} 657 658run_test_transparent() 659{ 660 local connect_addr="$1" 661 local msg="$2" 662 663 local connector_ns="$ns1" 664 local listener_ns="$ns2" 665 local lret=0 666 local r6flag="" 667 668 TEST_GROUP="${msg}" 669 670 # skip if we don't want v6 671 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 672 return 0 673 fi 674 675 # IP(V6)_TRANSPARENT has been added after TOS support which came with 676 # the required infrastructure in MPTCP sockopt code. To support TOS, the 677 # following function has been exported (T). Not great but better than 678 # checking for a specific kernel version. 679 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 680 mptcp_lib_pr_skip "${msg} not supported by the kernel" 681 mptcp_lib_result_skip "${TEST_GROUP}" 682 return 683 fi 684 685 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 686flush ruleset 687table inet mangle { 688 chain divert { 689 type filter hook prerouting priority -150; 690 691 meta l4proto tcp socket transparent 1 meta mark set 1 accept 692 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 693 } 694} 695EOF 696 then 697 mptcp_lib_pr_skip "$msg, could not load nft ruleset" 698 mptcp_lib_fail_if_expected_feature "nft rules" 699 mptcp_lib_result_skip "${TEST_GROUP}" 700 return 701 fi 702 703 local local_addr 704 if mptcp_lib_is_v6 "${connect_addr}"; then 705 local_addr="::" 706 r6flag="-6" 707 else 708 local_addr="0.0.0.0" 709 fi 710 711 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then 712 ip netns exec "$listener_ns" nft flush ruleset 713 mptcp_lib_pr_skip "$msg, ip $r6flag rule failed" 714 mptcp_lib_fail_if_expected_feature "ip rule" 715 mptcp_lib_result_skip "${TEST_GROUP}" 716 return 717 fi 718 719 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then 720 ip netns exec "$listener_ns" nft flush ruleset 721 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 722 mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed" 723 mptcp_lib_fail_if_expected_feature "ip route" 724 mptcp_lib_result_skip "${TEST_GROUP}" 725 return 726 fi 727 728 mptcp_lib_pr_info "test $msg" 729 730 port=$((20000 - 1)) 731 local extra_args="-o TRANSPARENT" 732 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 733 ${connect_addr} ${local_addr} "${extra_args}" 734 lret=$? 735 736 ip netns exec "$listener_ns" nft flush ruleset 737 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 738 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 739 740 if [ $lret -ne 0 ]; then 741 mptcp_lib_pr_fail "$msg, mptcp connection error" 742 ret=$lret 743 return 1 744 fi 745 746 mptcp_lib_pr_info "$msg pass" 747 return 0 748} 749 750run_tests_peekmode() 751{ 752 local peekmode="$1" 753 754 TEST_GROUP="peek mode: ${peekmode}" 755 mptcp_lib_pr_info "with peek mode: ${peekmode}" 756 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 757 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 758} 759 760run_tests_mptfo() 761{ 762 TEST_GROUP="MPTFO" 763 764 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 765 mptcp_lib_pr_skip "TFO not supported by the kernel" 766 mptcp_lib_result_skip "${TEST_GROUP}" 767 return 768 fi 769 770 mptcp_lib_pr_info "with MPTFO start" 771 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 772 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 773 774 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 775 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 776 777 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 778 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 779 780 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 781 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 782 mptcp_lib_pr_info "with MPTFO end" 783} 784 785run_tests_disconnect() 786{ 787 local old_cin=$cin 788 local old_sin=$sin 789 790 TEST_GROUP="full disconnect" 791 792 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 793 mptcp_lib_pr_skip "Full disconnect not supported" 794 mptcp_lib_result_skip "${TEST_GROUP}" 795 return 796 fi 797 798 cat $cin $cin $cin > "$cin".disconnect 799 800 # force do_transfer to cope with the multiple transmissions 801 sin="$cin.disconnect" 802 cin="$cin.disconnect" 803 cin_disconnect="$old_cin" 804 connect_per_transfer=3 805 806 mptcp_lib_pr_info "disconnect" 807 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 808 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 809 810 # restore previous status 811 sin=$old_sin 812 cin=$old_cin 813 cin_disconnect="$cin".disconnect 814 connect_per_transfer=1 815} 816 817display_time() 818{ 819 time_end=$(date +%s) 820 time_run=$((time_end-time_start)) 821 822 echo "Time: ${time_run} seconds" 823} 824 825log_if_error() 826{ 827 local msg="$1" 828 829 if [ ${ret} -ne 0 ]; then 830 mptcp_lib_pr_fail "${msg}" 831 832 final_ret=${ret} 833 ret=${KSFT_PASS} 834 835 return ${final_ret} 836 fi 837} 838 839stop_if_error() 840{ 841 if ! log_if_error "${@}"; then 842 display_time 843 mptcp_lib_result_print_all_tap 844 exit ${final_ret} 845 fi 846} 847 848make_file "$cin" "client" 849make_file "$sin" "server" 850 851check_mptcp_disabled 852 853stop_if_error "The kernel configuration is not valid for MPTCP" 854 855print_larger_title "Validating network environment with pings" 856for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 857 do_ping "$ns1" $sender 10.0.1.1 858 do_ping "$ns1" $sender dead:beef:1::1 859 860 do_ping "$ns2" $sender 10.0.1.2 861 do_ping "$ns2" $sender dead:beef:1::2 862 do_ping "$ns2" $sender 10.0.2.1 863 do_ping "$ns2" $sender dead:beef:2::1 864 865 do_ping "$ns3" $sender 10.0.2.2 866 do_ping "$ns3" $sender dead:beef:2::2 867 do_ping "$ns3" $sender 10.0.3.2 868 do_ping "$ns3" $sender dead:beef:3::2 869 870 do_ping "$ns4" $sender 10.0.3.1 871 do_ping "$ns4" $sender dead:beef:3::1 872done 873 874mptcp_lib_result_code "${ret}" "ping tests" 875 876stop_if_error "Could not even run ping tests" 877mptcp_lib_pr_ok 878 879[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 880tc_info="loss of $tc_loss " 881test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms " 882 883reorder_delay=$((tc_delay / 4)) 884 885if [ -z "${tc_reorder}" ]; then 886 reorder1=$((RANDOM%10)) 887 reorder1=$((100 - reorder1)) 888 reorder2=$((RANDOM%100)) 889 890 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 891 tc_reorder="reorder ${reorder1}% ${reorder2}%" 892 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 893 fi 894elif [ "$tc_reorder" = "0" ];then 895 tc_reorder="" 896elif [ "$reorder_delay" -gt 0 ];then 897 # reordering requires some delay 898 tc_reorder="reorder $tc_reorder" 899 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 900fi 901 902mptcp_lib_pr_info "Using ${tc_info}on ns3eth4" 903 904tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 905 906TEST_GROUP="loopback v4" 907run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 908stop_if_error "Could not even run loopback test" 909 910TEST_GROUP="loopback v6" 911run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 912stop_if_error "Could not even run loopback v6 test" 913 914TEST_GROUP="multihosts" 915for sender in $ns1 $ns2 $ns3 $ns4;do 916 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 917 # mptcp syncookie support. 918 if [ $sender = $ns1 ]; then 919 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 920 else 921 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 922 fi 923 924 run_tests "$ns1" $sender 10.0.1.1 925 run_tests "$ns1" $sender dead:beef:1::1 926 927 run_tests "$ns2" $sender 10.0.1.2 928 run_tests "$ns2" $sender dead:beef:1::2 929 run_tests "$ns2" $sender 10.0.2.1 930 run_tests "$ns2" $sender dead:beef:2::1 931 932 run_tests "$ns3" $sender 10.0.2.2 933 run_tests "$ns3" $sender dead:beef:2::2 934 run_tests "$ns3" $sender 10.0.3.2 935 run_tests "$ns3" $sender dead:beef:3::2 936 937 run_tests "$ns4" $sender 10.0.3.1 938 run_tests "$ns4" $sender dead:beef:3::1 939 940 log_if_error "Tests with $sender as a sender have failed" 941done 942 943run_tests_peekmode "saveWithPeek" 944run_tests_peekmode "saveAfterPeek" 945log_if_error "Tests with peek mode have failed" 946 947# MPTFO (MultiPath TCP Fatopen tests) 948run_tests_mptfo 949log_if_error "Tests with MPTFO have failed" 950 951# connect to ns4 ip address, ns2 should intercept/proxy 952run_test_transparent 10.0.3.1 "tproxy ipv4" 953run_test_transparent dead:beef:3::1 "tproxy ipv6" 954log_if_error "Tests with tproxy have failed" 955 956run_tests_disconnect 957log_if_error "Tests of the full disconnection have failed" 958 959display_time 960mptcp_lib_result_print_all_tap 961exit ${final_ret} 962