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" 262 263 # mainly to cover more code 264 if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then 265 mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs" 266 mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs" 267 ret=${KSFT_FAIL} 268 return 1 269 fi 270 271 # net.mptcp.enabled should be enabled by default 272 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 273 mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default" 274 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" 275 ret=${KSFT_FAIL} 276 return 1 277 fi 278 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 279 280 local err=0 281 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 282 grep -q "^socket: Protocol not available$" && err=1 283 mptcp_lib_ns_exit "${disabled_ns}" 284 285 if [ ${err} -eq 0 ]; then 286 mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl" 287 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" 288 ret=${KSFT_FAIL} 289 return 1 290 fi 291 292 mptcp_lib_pr_ok 293 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" 294 return 0 295} 296 297do_ping() 298{ 299 local listener_ns="$1" 300 local connector_ns="$2" 301 local connect_addr="$3" 302 local ping_args="-q -c 1" 303 local rc=0 304 305 if mptcp_lib_is_v6 "${connect_addr}"; then 306 $ipv6 || return 0 307 ping_args="${ping_args} -6" 308 fi 309 310 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 311 312 if [ $rc -ne 0 ] ; then 313 mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity" 314 ret=${KSFT_FAIL} 315 316 return 1 317 fi 318 319 return 0 320} 321 322do_transfer() 323{ 324 local listener_ns="$1" 325 local connector_ns="$2" 326 local cl_proto="$3" 327 local srv_proto="$4" 328 local connect_addr="$5" 329 local local_addr="$6" 330 local extra_args="$7" 331 332 port=$((port + 1)) 333 334 if [ "$rcvbuf" -gt 0 ]; then 335 extra_args+=" -R $rcvbuf" 336 fi 337 338 if [ "$sndbuf" -gt 0 ]; then 339 extra_args+=" -S $sndbuf" 340 fi 341 342 if [ -n "$testmode" ]; then 343 extra_args+=" -m $testmode" 344 fi 345 346 if [ -n "$extra_args" ] && $options_log; then 347 mptcp_lib_pr_info "extra options: $extra_args" 348 fi 349 options_log=false 350 351 :> "$cout" 352 :> "$sout" 353 :> "$capout" 354 355 local addr_port 356 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 357 local pretty_title 358 pretty_title="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 359 mptcp_lib_print_title "${pretty_title}" 360 361 local tap_title="${connector_ns:0:3} ${cl_proto} -> ${listener_ns:0:3} (${addr_port}) ${srv_proto}" 362 363 if $capture; then 364 local capuser 365 local rndh="${connector_ns:4}" 366 if [ -z $SUDO_USER ] ; then 367 capuser="" 368 else 369 capuser="-Z $SUDO_USER" 370 fi 371 372 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 373 local capopt="-i any -s 65535 -B 32768 ${capuser}" 374 375 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 376 local cappid_listener=$! 377 378 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 379 local cappid_connector=$! 380 381 sleep 1 382 fi 383 384 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 385 nstat -n 386 if [ ${listener_ns} != ${connector_ns} ]; then 387 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 388 nstat -n 389 fi 390 391 local stat_synrx_last_l 392 local stat_ackrx_last_l 393 local stat_cookietx_last 394 local stat_cookierx_last 395 local stat_csum_err_s 396 local stat_csum_err_c 397 local stat_tcpfb_last_l 398 stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 399 stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 400 stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 401 stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 402 stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 403 stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 404 stat_tcpfb_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 405 406 timeout ${timeout_test} \ 407 ip netns exec ${listener_ns} \ 408 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 409 $extra_args $local_addr < "$sin" > "$sout" & 410 local spid=$! 411 412 mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}" 413 414 local start 415 start=$(date +%s%3N) 416 timeout ${timeout_test} \ 417 ip netns exec ${connector_ns} \ 418 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 419 $extra_args $connect_addr < "$cin" > "$cout" & 420 local cpid=$! 421 422 wait $cpid 423 local retc=$? 424 wait $spid 425 local rets=$? 426 427 local stop 428 stop=$(date +%s%3N) 429 430 if $capture; then 431 sleep 1 432 kill ${cappid_listener} 433 kill ${cappid_connector} 434 fi 435 436 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 437 nstat | grep Tcp > /tmp/${listener_ns}.out 438 if [ ${listener_ns} != ${connector_ns} ]; then 439 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 440 nstat | grep Tcp > /tmp/${connector_ns}.out 441 fi 442 443 local duration 444 duration=$((stop-start)) 445 printf "(duration %05sms) " "${duration}" 446 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 447 mptcp_lib_pr_fail "client exit code $retc, server $rets" 448 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 449 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 450 cat /tmp/${listener_ns}.out 451 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 452 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 453 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 454 455 echo 456 cat "$capout" 457 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 458 return 1 459 fi 460 461 mptcp_lib_check_transfer $sin $cout "file received by client" 462 retc=$? 463 mptcp_lib_check_transfer $cin $sout "file received by server" 464 rets=$? 465 466 local extra="" 467 local stat_synrx_now_l 468 local stat_ackrx_now_l 469 local stat_cookietx_now 470 local stat_cookierx_now 471 local stat_ooo_now 472 local stat_tcpfb_now_l 473 stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 474 stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 475 stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 476 stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 477 stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 478 stat_tcpfb_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 479 480 expect_synrx=$((stat_synrx_last_l)) 481 expect_ackrx=$((stat_ackrx_last_l)) 482 483 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 484 cookies=${cookies##*=} 485 486 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 487 expect_synrx=$((stat_synrx_last_l+connect_per_transfer)) 488 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer)) 489 fi 490 491 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 492 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx_now_l})" \ 493 "than expected (${expect_synrx})" 494 retc=1 495 fi 496 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then 497 if [ ${stat_ooo_now} -eq 0 ]; then 498 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx_now_l})" \ 499 "than expected (${expect_ackrx})" 500 rets=1 501 else 502 extra+=" [ Note ] fallback due to TCP OoO" 503 fi 504 fi 505 506 if $checksum; then 507 local csum_err_s 508 local csum_err_c 509 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 510 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 511 512 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 513 if [ $csum_err_s_nr -gt 0 ]; then 514 mptcp_lib_pr_fail "server got ${csum_err_s_nr} data checksum error[s]" 515 rets=1 516 fi 517 518 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 519 if [ $csum_err_c_nr -gt 0 ]; then 520 mptcp_lib_pr_fail "client got ${csum_err_c_nr} data checksum error[s]" 521 retc=1 522 fi 523 fi 524 525 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then 526 mptcp_lib_pr_fail "unexpected fallback to TCP" 527 rets=1 528 fi 529 530 if [ $cookies -eq 2 ];then 531 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 532 extra+=" WARN: CookieSent: did not advance" 533 fi 534 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 535 extra+=" WARN: CookieRecv: did not advance" 536 fi 537 else 538 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 539 extra+=" WARN: CookieSent: changed" 540 fi 541 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 542 extra+=" WARN: CookieRecv: changed" 543 fi 544 fi 545 546 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 547 extra+=" WARN: SYNRX: expect ${expect_synrx}," 548 extra+=" got ${stat_synrx_now_l} (probably retransmissions)" 549 fi 550 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 551 extra+=" WARN: ACKRX: expect ${expect_ackrx}," 552 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)" 553 fi 554 555 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 556 mptcp_lib_pr_ok "${extra:1}" 557 mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}" 558 else 559 if [ -n "${extra}" ]; then 560 mptcp_lib_print_warn "${extra:1}" 561 fi 562 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 563 fi 564 565 cat "$capout" 566 [ $retc -eq 0 ] && [ $rets -eq 0 ] 567} 568 569make_file() 570{ 571 local name=$1 572 local who=$2 573 local SIZE=$filesize 574 local ksize 575 local rem 576 577 if [ $SIZE -eq 0 ]; then 578 local MAXSIZE=$((1024 * 1024 * 8)) 579 local MINSIZE=$((1024 * 256)) 580 581 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 582 fi 583 584 ksize=$((SIZE / 1024)) 585 rem=$((SIZE - (ksize * 1024))) 586 587 mptcp_lib_make_file $name 1024 $ksize 588 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null 589 590 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 591} 592 593run_tests_lo() 594{ 595 local listener_ns="$1" 596 local connector_ns="$2" 597 local connect_addr="$3" 598 local loopback="$4" 599 local extra_args="$5" 600 local lret=0 601 602 # skip if test programs are running inside same netns for subsequent runs. 603 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 604 return 0 605 fi 606 607 # skip if we don't want v6 608 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 609 return 0 610 fi 611 612 local local_addr 613 if mptcp_lib_is_v6 "${connect_addr}"; then 614 local_addr="::" 615 else 616 local_addr="0.0.0.0" 617 fi 618 619 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 620 ${connect_addr} ${local_addr} "${extra_args}" 621 lret=$? 622 if [ $lret -ne 0 ]; then 623 ret=$lret 624 return 1 625 fi 626 627 if [ $do_tcp -eq 0 ]; then 628 # don't bother testing fallback tcp except for loopback case. 629 if [ ${listener_ns} != ${connector_ns} ]; then 630 return 0 631 fi 632 fi 633 634 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 635 ${connect_addr} ${local_addr} "${extra_args}" 636 lret=$? 637 if [ $lret -ne 0 ]; then 638 ret=$lret 639 return 1 640 fi 641 642 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 643 ${connect_addr} ${local_addr} "${extra_args}" 644 lret=$? 645 if [ $lret -ne 0 ]; then 646 ret=$lret 647 return 1 648 fi 649 650 if [ $do_tcp -gt 1 ] ;then 651 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 652 ${connect_addr} ${local_addr} "${extra_args}" 653 lret=$? 654 if [ $lret -ne 0 ]; then 655 ret=$lret 656 return 1 657 fi 658 fi 659 660 return 0 661} 662 663run_tests() 664{ 665 run_tests_lo $1 $2 $3 0 666} 667 668run_test_transparent() 669{ 670 local connect_addr="$1" 671 local msg="$2" 672 673 local connector_ns="$ns1" 674 local listener_ns="$ns2" 675 local lret=0 676 local r6flag="" 677 678 TEST_GROUP="${msg}" 679 680 # skip if we don't want v6 681 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 682 return 0 683 fi 684 685 # IP(V6)_TRANSPARENT has been added after TOS support which came with 686 # the required infrastructure in MPTCP sockopt code. To support TOS, the 687 # following function has been exported (T). Not great but better than 688 # checking for a specific kernel version. 689 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 690 mptcp_lib_pr_skip "${msg} not supported by the kernel" 691 mptcp_lib_result_skip "${TEST_GROUP}" 692 return 693 fi 694 695 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 696flush ruleset 697table inet mangle { 698 chain divert { 699 type filter hook prerouting priority -150; 700 701 meta l4proto tcp socket transparent 1 meta mark set 1 accept 702 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 703 } 704} 705EOF 706 then 707 mptcp_lib_pr_skip "$msg, could not load nft ruleset" 708 mptcp_lib_fail_if_expected_feature "nft rules" 709 mptcp_lib_result_skip "${TEST_GROUP}" 710 return 711 fi 712 713 local local_addr 714 if mptcp_lib_is_v6 "${connect_addr}"; then 715 local_addr="::" 716 r6flag="-6" 717 else 718 local_addr="0.0.0.0" 719 fi 720 721 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then 722 ip netns exec "$listener_ns" nft flush ruleset 723 mptcp_lib_pr_skip "$msg, ip $r6flag rule failed" 724 mptcp_lib_fail_if_expected_feature "ip rule" 725 mptcp_lib_result_skip "${TEST_GROUP}" 726 return 727 fi 728 729 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then 730 ip netns exec "$listener_ns" nft flush ruleset 731 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 732 mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed" 733 mptcp_lib_fail_if_expected_feature "ip route" 734 mptcp_lib_result_skip "${TEST_GROUP}" 735 return 736 fi 737 738 mptcp_lib_pr_info "test $msg" 739 740 port=$((20000 - 1)) 741 local extra_args="-o TRANSPARENT" 742 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 743 ${connect_addr} ${local_addr} "${extra_args}" 744 lret=$? 745 746 ip netns exec "$listener_ns" nft flush ruleset 747 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 748 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 749 750 if [ $lret -ne 0 ]; then 751 mptcp_lib_pr_fail "$msg, mptcp connection error" 752 ret=$lret 753 return 1 754 fi 755 756 mptcp_lib_pr_info "$msg pass" 757 return 0 758} 759 760run_tests_peekmode() 761{ 762 local peekmode="$1" 763 764 TEST_GROUP="peek mode: ${peekmode}" 765 mptcp_lib_pr_info "with peek mode: ${peekmode}" 766 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 767 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 768} 769 770run_tests_mptfo() 771{ 772 TEST_GROUP="MPTFO" 773 774 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 775 mptcp_lib_pr_skip "TFO not supported by the kernel" 776 mptcp_lib_result_skip "${TEST_GROUP}" 777 return 778 fi 779 780 mptcp_lib_pr_info "with MPTFO start" 781 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 782 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 783 784 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 785 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 786 787 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 788 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 789 790 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 791 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 792 mptcp_lib_pr_info "with MPTFO end" 793} 794 795run_tests_disconnect() 796{ 797 local old_cin=$cin 798 local old_sin=$sin 799 800 TEST_GROUP="full disconnect" 801 802 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 803 mptcp_lib_pr_skip "Full disconnect not supported" 804 mptcp_lib_result_skip "${TEST_GROUP}" 805 return 806 fi 807 808 cat $cin $cin $cin > "$cin".disconnect 809 810 # force do_transfer to cope with the multiple transmissions 811 sin="$cin.disconnect" 812 cin="$cin.disconnect" 813 cin_disconnect="$old_cin" 814 connect_per_transfer=3 815 816 mptcp_lib_pr_info "disconnect" 817 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 818 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 819 820 # restore previous status 821 sin=$old_sin 822 cin=$old_cin 823 cin_disconnect="$cin".disconnect 824 connect_per_transfer=1 825} 826 827display_time() 828{ 829 time_end=$(date +%s) 830 time_run=$((time_end-time_start)) 831 832 echo "Time: ${time_run} seconds" 833} 834 835log_if_error() 836{ 837 local msg="$1" 838 839 if [ ${ret} -ne 0 ]; then 840 mptcp_lib_pr_fail "${msg}" 841 842 final_ret=${ret} 843 ret=${KSFT_PASS} 844 845 return ${final_ret} 846 fi 847} 848 849stop_if_error() 850{ 851 if ! log_if_error "${@}"; then 852 display_time 853 mptcp_lib_result_print_all_tap 854 exit ${final_ret} 855 fi 856} 857 858make_file "$cin" "client" 859make_file "$sin" "server" 860 861mptcp_lib_subtests_last_ts_reset 862 863check_mptcp_disabled 864 865stop_if_error "The kernel configuration is not valid for MPTCP" 866 867print_larger_title "Validating network environment with pings" 868for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 869 do_ping "$ns1" $sender 10.0.1.1 870 do_ping "$ns1" $sender dead:beef:1::1 871 872 do_ping "$ns2" $sender 10.0.1.2 873 do_ping "$ns2" $sender dead:beef:1::2 874 do_ping "$ns2" $sender 10.0.2.1 875 do_ping "$ns2" $sender dead:beef:2::1 876 877 do_ping "$ns3" $sender 10.0.2.2 878 do_ping "$ns3" $sender dead:beef:2::2 879 do_ping "$ns3" $sender 10.0.3.2 880 do_ping "$ns3" $sender dead:beef:3::2 881 882 do_ping "$ns4" $sender 10.0.3.1 883 do_ping "$ns4" $sender dead:beef:3::1 884done 885 886mptcp_lib_result_code "${ret}" "ping tests" 887 888stop_if_error "Could not even run ping tests" 889mptcp_lib_pr_ok 890 891[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 892tc_info="loss of $tc_loss " 893test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms " 894 895reorder_delay=$((tc_delay / 4)) 896 897if [ -z "${tc_reorder}" ]; then 898 reorder1=$((RANDOM%10)) 899 reorder1=$((100 - reorder1)) 900 reorder2=$((RANDOM%100)) 901 902 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 903 tc_reorder="reorder ${reorder1}% ${reorder2}%" 904 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 905 fi 906elif [ "$tc_reorder" = "0" ];then 907 tc_reorder="" 908elif [ "$reorder_delay" -gt 0 ];then 909 # reordering requires some delay 910 tc_reorder="reorder $tc_reorder" 911 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 912fi 913 914mptcp_lib_pr_info "Using ${tc_info}on ns3eth4" 915 916tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 917 918TEST_GROUP="loopback v4" 919run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 920stop_if_error "Could not even run loopback test" 921 922TEST_GROUP="loopback v6" 923run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 924stop_if_error "Could not even run loopback v6 test" 925 926TEST_GROUP="multihosts" 927for sender in $ns1 $ns2 $ns3 $ns4;do 928 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 929 # mptcp syncookie support. 930 if [ $sender = $ns1 ]; then 931 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 932 else 933 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 934 fi 935 936 run_tests "$ns1" $sender 10.0.1.1 937 run_tests "$ns1" $sender dead:beef:1::1 938 939 run_tests "$ns2" $sender 10.0.1.2 940 run_tests "$ns2" $sender dead:beef:1::2 941 run_tests "$ns2" $sender 10.0.2.1 942 run_tests "$ns2" $sender dead:beef:2::1 943 944 run_tests "$ns3" $sender 10.0.2.2 945 run_tests "$ns3" $sender dead:beef:2::2 946 run_tests "$ns3" $sender 10.0.3.2 947 run_tests "$ns3" $sender dead:beef:3::2 948 949 run_tests "$ns4" $sender 10.0.3.1 950 run_tests "$ns4" $sender dead:beef:3::1 951 952 log_if_error "Tests with $sender as a sender have failed" 953done 954 955run_tests_peekmode "saveWithPeek" 956run_tests_peekmode "saveAfterPeek" 957log_if_error "Tests with peek mode have failed" 958 959# MPTFO (MultiPath TCP Fatopen tests) 960run_tests_mptfo 961log_if_error "Tests with MPTFO have failed" 962 963# connect to ns4 ip address, ns2 should intercept/proxy 964run_test_transparent 10.0.3.1 "tproxy ipv4" 965run_test_transparent dead:beef:3::1 "tproxy ipv6" 966log_if_error "Tests with tproxy have failed" 967 968run_tests_disconnect 969log_if_error "Tests of the full disconnection have failed" 970 971display_time 972mptcp_lib_result_print_all_tap 973exit ${final_ret} 974