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" 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 214set_ethtool_flags() { 215 local ns="$1" 216 local dev="$2" 217 local flags="$3" 218 219 if ip netns exec $ns ethtool -K $dev $flags 2>/dev/null; then 220 mptcp_lib_pr_info "set $ns dev $dev: ethtool -K $flags" 221 fi 222} 223 224set_random_ethtool_flags() { 225 local flags="" 226 local r=$RANDOM 227 228 local pick1=$((r & 1)) 229 local pick2=$((r & 2)) 230 local pick3=$((r & 4)) 231 232 [ $pick1 -ne 0 ] && flags="tso off" 233 [ $pick2 -ne 0 ] && flags="$flags gso off" 234 [ $pick3 -ne 0 ] && flags="$flags gro off" 235 236 [ -z "$flags" ] && return 237 238 set_ethtool_flags "$1" "$2" "$flags" 239} 240 241if $ethtool_random_on;then 242 set_random_ethtool_flags "$ns3" ns3eth2 243 set_random_ethtool_flags "$ns4" ns4eth3 244else 245 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 246 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 247fi 248 249print_larger_title() { 250 # here we don't have the time, a bit longer for the alignment 251 MPTCP_LIB_TEST_FORMAT="%02u %-69s" \ 252 mptcp_lib_print_title "${@}" 253} 254 255check_mptcp_disabled() 256{ 257 local disabled_ns 258 mptcp_lib_ns_init disabled_ns 259 260 print_larger_title "New MPTCP socket can be blocked via sysctl" 261 262 # mainly to cover more code 263 if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then 264 mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs" 265 mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs" 266 ret=${KSFT_FAIL} 267 return 1 268 fi 269 270 # net.mptcp.enabled should be enabled by default 271 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 272 mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default" 273 mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" 274 ret=${KSFT_FAIL} 275 return 1 276 fi 277 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 278 279 local err=0 280 LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 281 grep -q "^socket: Protocol not available$" && err=1 282 mptcp_lib_ns_exit "${disabled_ns}" 283 284 if [ ${err} -eq 0 ]; then 285 mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl" 286 mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" 287 ret=${KSFT_FAIL} 288 return 1 289 fi 290 291 mptcp_lib_pr_ok 292 mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" 293 return 0 294} 295 296do_ping() 297{ 298 local listener_ns="$1" 299 local connector_ns="$2" 300 local connect_addr="$3" 301 local ping_args="-q -c 1" 302 local rc=0 303 304 if mptcp_lib_is_v6 "${connect_addr}"; then 305 $ipv6 || return 0 306 ping_args="${ping_args} -6" 307 fi 308 309 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 310 311 if [ $rc -ne 0 ] ; then 312 mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity" 313 ret=${KSFT_FAIL} 314 315 return 1 316 fi 317 318 return 0 319} 320 321do_transfer() 322{ 323 local listener_ns="$1" 324 local connector_ns="$2" 325 local cl_proto="$3" 326 local srv_proto="$4" 327 local connect_addr="$5" 328 local local_addr="$6" 329 local extra_args="$7" 330 331 port=$((port + 1)) 332 333 if [ "$rcvbuf" -gt 0 ]; then 334 extra_args+=" -R $rcvbuf" 335 fi 336 337 if [ "$sndbuf" -gt 0 ]; then 338 extra_args+=" -S $sndbuf" 339 fi 340 341 if [ -n "$testmode" ]; then 342 extra_args+=" -m $testmode" 343 fi 344 345 if [ -n "$extra_args" ] && $options_log; then 346 mptcp_lib_pr_info "extra options: $extra_args" 347 fi 348 options_log=false 349 350 :> "$cout" 351 :> "$sout" 352 :> "$capout" 353 354 local addr_port 355 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 356 local pretty_title 357 pretty_title="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" 358 mptcp_lib_print_title "${pretty_title}" 359 360 local tap_title="${connector_ns:0:3} ${cl_proto} -> ${listener_ns:0:3} (${addr_port}) ${srv_proto}" 361 362 if $capture; then 363 local capuser 364 local rndh="${connector_ns:4}" 365 if [ -z $SUDO_USER ] ; then 366 capuser="" 367 else 368 capuser="-Z $SUDO_USER" 369 fi 370 371 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 372 local capopt="-i any -s 65535 -B 32768 ${capuser}" 373 374 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 375 local cappid_listener=$! 376 377 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 378 local cappid_connector=$! 379 380 sleep 1 381 fi 382 383 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 384 nstat -n 385 if [ ${listener_ns} != ${connector_ns} ]; then 386 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 387 nstat -n 388 fi 389 390 local stat_synrx_last_l 391 local stat_ackrx_last_l 392 local stat_cookietx_last 393 local stat_cookierx_last 394 local stat_csum_err_s 395 local stat_csum_err_c 396 local stat_tcpfb_last_l 397 stat_synrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 398 stat_ackrx_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 399 stat_cookietx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 400 stat_cookierx_last=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 401 stat_csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 402 stat_csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 403 stat_tcpfb_last_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 404 405 timeout ${timeout_test} \ 406 ip netns exec ${listener_ns} \ 407 ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ 408 $extra_args $local_addr < "$sin" > "$sout" & 409 local spid=$! 410 411 mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}" 412 413 local start 414 start=$(date +%s%3N) 415 timeout ${timeout_test} \ 416 ip netns exec ${connector_ns} \ 417 ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ 418 $extra_args $connect_addr < "$cin" > "$cout" & 419 local cpid=$! 420 421 wait $cpid 422 local retc=$? 423 wait $spid 424 local rets=$? 425 426 local stop 427 stop=$(date +%s%3N) 428 429 if $capture; then 430 sleep 1 431 kill ${cappid_listener} 432 kill ${cappid_connector} 433 fi 434 435 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 436 nstat | grep Tcp > /tmp/${listener_ns}.out 437 if [ ${listener_ns} != ${connector_ns} ]; then 438 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 439 nstat | grep Tcp > /tmp/${connector_ns}.out 440 fi 441 442 local duration 443 duration=$((stop-start)) 444 printf "(duration %05sms) " "${duration}" 445 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 446 mptcp_lib_pr_fail "client exit code $retc, server $rets" 447 mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}" \ 448 "/tmp/${listener_ns}.out" "/tmp/${connector_ns}.out" 449 450 echo 451 cat "$capout" 452 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 453 return 1 454 fi 455 456 mptcp_lib_check_transfer $sin $cout "file received by client" 457 retc=$? 458 mptcp_lib_check_transfer $cin $sout "file received by server" 459 rets=$? 460 461 local extra="" 462 local stat_synrx_now_l 463 local stat_ackrx_now_l 464 local stat_cookietx_now 465 local stat_cookierx_now 466 local stat_ooo_now 467 local stat_tcpfb_now_l 468 stat_synrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 469 stat_ackrx_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 470 stat_cookietx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent") 471 stat_cookierx_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv") 472 stat_ooo_now=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue") 473 stat_tcpfb_now_l=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK") 474 475 expect_synrx=$((stat_synrx_last_l)) 476 expect_ackrx=$((stat_ackrx_last_l)) 477 478 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 479 cookies=${cookies##*=} 480 481 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 482 expect_synrx=$((stat_synrx_last_l+connect_per_transfer)) 483 expect_ackrx=$((stat_ackrx_last_l+connect_per_transfer)) 484 fi 485 486 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 487 mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx_now_l})" \ 488 "than expected (${expect_synrx})" 489 retc=1 490 fi 491 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ] && [ ${stat_ooo_now} -eq 0 ]; then 492 if [ ${stat_ooo_now} -eq 0 ]; then 493 mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx_now_l})" \ 494 "than expected (${expect_ackrx})" 495 rets=1 496 else 497 extra+=" [ Note ] fallback due to TCP OoO" 498 fi 499 fi 500 501 if $checksum; then 502 local csum_err_s 503 local csum_err_c 504 csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr") 505 csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr") 506 507 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) 508 if [ $csum_err_s_nr -gt 0 ]; then 509 mptcp_lib_pr_fail "server got ${csum_err_s_nr} data checksum error[s]" 510 rets=1 511 fi 512 513 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) 514 if [ $csum_err_c_nr -gt 0 ]; then 515 mptcp_lib_pr_fail "client got ${csum_err_c_nr} data checksum error[s]" 516 retc=1 517 fi 518 fi 519 520 if [ ${stat_ooo_now} -eq 0 ] && [ ${stat_tcpfb_last_l} -ne ${stat_tcpfb_now_l} ]; then 521 mptcp_lib_pr_fail "unexpected fallback to TCP" 522 rets=1 523 fi 524 525 if [ $cookies -eq 2 ];then 526 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 527 extra+=" WARN: CookieSent: did not advance" 528 fi 529 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 530 extra+=" WARN: CookieRecv: did not advance" 531 fi 532 else 533 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 534 extra+=" WARN: CookieSent: changed" 535 fi 536 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 537 extra+=" WARN: CookieRecv: changed" 538 fi 539 fi 540 541 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 542 extra+=" WARN: SYNRX: expect ${expect_synrx}," 543 extra+=" got ${stat_synrx_now_l} (probably retransmissions)" 544 fi 545 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 546 extra+=" WARN: ACKRX: expect ${expect_ackrx}," 547 extra+=" got ${stat_ackrx_now_l} (probably retransmissions)" 548 fi 549 550 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 551 mptcp_lib_pr_ok "${extra:1}" 552 mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}" 553 else 554 if [ -n "${extra}" ]; then 555 mptcp_lib_print_warn "${extra:1}" 556 fi 557 mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}" 558 fi 559 560 cat "$capout" 561 [ $retc -eq 0 ] && [ $rets -eq 0 ] 562} 563 564make_file() 565{ 566 local name=$1 567 local who=$2 568 local SIZE=$filesize 569 local ksize 570 local rem 571 572 if [ $SIZE -eq 0 ]; then 573 local MAXSIZE=$((1024 * 1024 * 8)) 574 local MINSIZE=$((1024 * 256)) 575 576 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 577 fi 578 579 ksize=$((SIZE / 1024)) 580 rem=$((SIZE - (ksize * 1024))) 581 582 mptcp_lib_make_file $name 1024 $ksize 583 dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null 584 585 echo "Created $name (size $(stat -c "%s" "$name") B) containing data sent by $who" 586} 587 588run_tests_lo() 589{ 590 local listener_ns="$1" 591 local connector_ns="$2" 592 local connect_addr="$3" 593 local loopback="$4" 594 local extra_args="$5" 595 local lret=0 596 597 # skip if test programs are running inside same netns for subsequent runs. 598 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 599 return 0 600 fi 601 602 # skip if we don't want v6 603 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 604 return 0 605 fi 606 607 local local_addr 608 if mptcp_lib_is_v6 "${connect_addr}"; then 609 local_addr="::" 610 else 611 local_addr="0.0.0.0" 612 fi 613 614 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 615 ${connect_addr} ${local_addr} "${extra_args}" 616 lret=$? 617 if [ $lret -ne 0 ]; then 618 ret=$lret 619 return 1 620 fi 621 622 if [ $do_tcp -eq 0 ]; then 623 # don't bother testing fallback tcp except for loopback case. 624 if [ ${listener_ns} != ${connector_ns} ]; then 625 return 0 626 fi 627 fi 628 629 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ 630 ${connect_addr} ${local_addr} "${extra_args}" 631 lret=$? 632 if [ $lret -ne 0 ]; then 633 ret=$lret 634 return 1 635 fi 636 637 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ 638 ${connect_addr} ${local_addr} "${extra_args}" 639 lret=$? 640 if [ $lret -ne 0 ]; then 641 ret=$lret 642 return 1 643 fi 644 645 if [ $do_tcp -gt 1 ] ;then 646 do_transfer ${listener_ns} ${connector_ns} TCP TCP \ 647 ${connect_addr} ${local_addr} "${extra_args}" 648 lret=$? 649 if [ $lret -ne 0 ]; then 650 ret=$lret 651 return 1 652 fi 653 fi 654 655 return 0 656} 657 658run_tests() 659{ 660 run_tests_lo $1 $2 $3 0 661} 662 663run_test_transparent() 664{ 665 local connect_addr="$1" 666 local msg="$2" 667 668 local connector_ns="$ns1" 669 local listener_ns="$ns2" 670 local lret=0 671 local r6flag="" 672 673 TEST_GROUP="${msg}" 674 675 # skip if we don't want v6 676 if ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then 677 return 0 678 fi 679 680 # IP(V6)_TRANSPARENT has been added after TOS support which came with 681 # the required infrastructure in MPTCP sockopt code. To support TOS, the 682 # following function has been exported (T). Not great but better than 683 # checking for a specific kernel version. 684 if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then 685 mptcp_lib_pr_skip "${msg} not supported by the kernel" 686 mptcp_lib_result_skip "${TEST_GROUP}" 687 return 688 fi 689 690 if ! ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" 691flush ruleset 692table inet mangle { 693 chain divert { 694 type filter hook prerouting priority -150; 695 696 meta l4proto tcp socket transparent 1 meta mark set 1 accept 697 tcp dport 20000 tproxy to :20000 meta mark set 1 accept 698 } 699} 700EOF 701 then 702 mptcp_lib_pr_skip "$msg, could not load nft ruleset" 703 mptcp_lib_fail_if_expected_feature "nft rules" 704 mptcp_lib_result_skip "${TEST_GROUP}" 705 return 706 fi 707 708 local local_addr 709 if mptcp_lib_is_v6 "${connect_addr}"; then 710 local_addr="::" 711 r6flag="-6" 712 else 713 local_addr="0.0.0.0" 714 fi 715 716 if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then 717 ip netns exec "$listener_ns" nft flush ruleset 718 mptcp_lib_pr_skip "$msg, ip $r6flag rule failed" 719 mptcp_lib_fail_if_expected_feature "ip rule" 720 mptcp_lib_result_skip "${TEST_GROUP}" 721 return 722 fi 723 724 if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then 725 ip netns exec "$listener_ns" nft flush ruleset 726 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 727 mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed" 728 mptcp_lib_fail_if_expected_feature "ip route" 729 mptcp_lib_result_skip "${TEST_GROUP}" 730 return 731 fi 732 733 mptcp_lib_pr_info "test $msg" 734 735 port=$((20000 - 1)) 736 local extra_args="-o TRANSPARENT" 737 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ 738 ${connect_addr} ${local_addr} "${extra_args}" 739 lret=$? 740 741 ip netns exec "$listener_ns" nft flush ruleset 742 ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 743 ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 744 745 if [ $lret -ne 0 ]; then 746 mptcp_lib_pr_fail "$msg, mptcp connection error" 747 ret=$lret 748 return 1 749 fi 750 751 mptcp_lib_pr_info "$msg pass" 752 return 0 753} 754 755run_tests_peekmode() 756{ 757 local peekmode="$1" 758 759 TEST_GROUP="peek mode: ${peekmode}" 760 mptcp_lib_pr_info "with peek mode: ${peekmode}" 761 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" 762 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" 763} 764 765run_tests_mptfo() 766{ 767 TEST_GROUP="MPTFO" 768 769 if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then 770 mptcp_lib_pr_skip "TFO not supported by the kernel" 771 mptcp_lib_result_skip "${TEST_GROUP}" 772 return 773 fi 774 775 mptcp_lib_pr_info "with MPTFO start" 776 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 777 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 778 779 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 780 run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" 781 782 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 783 run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" 784 785 ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 786 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 787 mptcp_lib_pr_info "with MPTFO end" 788} 789 790run_tests_disconnect() 791{ 792 local old_cin=$cin 793 local old_sin=$sin 794 795 TEST_GROUP="full disconnect" 796 797 if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then 798 mptcp_lib_pr_skip "Full disconnect not supported" 799 mptcp_lib_result_skip "${TEST_GROUP}" 800 return 801 fi 802 803 cat $cin $cin $cin > "$cin".disconnect 804 805 # force do_transfer to cope with the multiple transmissions 806 sin="$cin.disconnect" 807 cin="$cin.disconnect" 808 cin_disconnect="$old_cin" 809 connect_per_transfer=3 810 811 mptcp_lib_pr_info "disconnect" 812 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" 813 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" 814 815 # restore previous status 816 sin=$old_sin 817 cin=$old_cin 818 cin_disconnect="$cin".disconnect 819 connect_per_transfer=1 820} 821 822display_time() 823{ 824 time_end=$(date +%s) 825 time_run=$((time_end-time_start)) 826 827 echo "Time: ${time_run} seconds" 828} 829 830log_if_error() 831{ 832 local msg="$1" 833 834 if [ ${ret} -ne 0 ]; then 835 mptcp_lib_pr_fail "${msg}" 836 837 final_ret=${ret} 838 ret=${KSFT_PASS} 839 840 return ${final_ret} 841 fi 842} 843 844stop_if_error() 845{ 846 if ! log_if_error "${@}"; then 847 display_time 848 mptcp_lib_result_print_all_tap 849 exit ${final_ret} 850 fi 851} 852 853make_file "$cin" "client" 854make_file "$sin" "server" 855 856mptcp_lib_subtests_last_ts_reset 857 858check_mptcp_disabled 859 860stop_if_error "The kernel configuration is not valid for MPTCP" 861 862print_larger_title "Validating network environment with pings" 863for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 864 do_ping "$ns1" $sender 10.0.1.1 865 do_ping "$ns1" $sender dead:beef:1::1 866 867 do_ping "$ns2" $sender 10.0.1.2 868 do_ping "$ns2" $sender dead:beef:1::2 869 do_ping "$ns2" $sender 10.0.2.1 870 do_ping "$ns2" $sender dead:beef:2::1 871 872 do_ping "$ns3" $sender 10.0.2.2 873 do_ping "$ns3" $sender dead:beef:2::2 874 do_ping "$ns3" $sender 10.0.3.2 875 do_ping "$ns3" $sender dead:beef:3::2 876 877 do_ping "$ns4" $sender 10.0.3.1 878 do_ping "$ns4" $sender dead:beef:3::1 879done 880 881mptcp_lib_result_code "${ret}" "ping tests" 882 883stop_if_error "Could not even run ping tests" 884mptcp_lib_pr_ok 885 886[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 887tc_info="loss of $tc_loss " 888test "$tc_delay" -gt 0 && tc_info+="delay $tc_delay ms " 889 890reorder_delay=$((tc_delay / 4)) 891 892if [ -z "${tc_reorder}" ]; then 893 reorder1=$((RANDOM%10)) 894 reorder1=$((100 - reorder1)) 895 reorder2=$((RANDOM%100)) 896 897 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 898 tc_reorder="reorder ${reorder1}% ${reorder2}%" 899 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 900 fi 901elif [ "$tc_reorder" = "0" ];then 902 tc_reorder="" 903elif [ "$reorder_delay" -gt 0 ];then 904 # reordering requires some delay 905 tc_reorder="reorder $tc_reorder" 906 tc_info+="$tc_reorder with delay ${reorder_delay}ms " 907fi 908 909mptcp_lib_pr_info "Using ${tc_info}on ns3eth4" 910 911tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 912 913TEST_GROUP="loopback v4" 914run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 915stop_if_error "Could not even run loopback test" 916 917TEST_GROUP="loopback v6" 918run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 919stop_if_error "Could not even run loopback v6 test" 920 921TEST_GROUP="multihosts" 922for sender in $ns1 $ns2 $ns3 $ns4;do 923 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 924 # mptcp syncookie support. 925 if [ $sender = $ns1 ]; then 926 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 927 else 928 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 929 fi 930 931 run_tests "$ns1" $sender 10.0.1.1 932 run_tests "$ns1" $sender dead:beef:1::1 933 934 run_tests "$ns2" $sender 10.0.1.2 935 run_tests "$ns2" $sender dead:beef:1::2 936 run_tests "$ns2" $sender 10.0.2.1 937 run_tests "$ns2" $sender dead:beef:2::1 938 939 run_tests "$ns3" $sender 10.0.2.2 940 run_tests "$ns3" $sender dead:beef:2::2 941 run_tests "$ns3" $sender 10.0.3.2 942 run_tests "$ns3" $sender dead:beef:3::2 943 944 run_tests "$ns4" $sender 10.0.3.1 945 run_tests "$ns4" $sender dead:beef:3::1 946 947 log_if_error "Tests with $sender as a sender have failed" 948done 949 950run_tests_peekmode "saveWithPeek" 951run_tests_peekmode "saveAfterPeek" 952log_if_error "Tests with peek mode have failed" 953 954# MPTFO (MultiPath TCP Fatopen tests) 955run_tests_mptfo 956log_if_error "Tests with MPTFO have failed" 957 958# connect to ns4 ip address, ns2 should intercept/proxy 959run_test_transparent 10.0.3.1 "tproxy ipv4" 960run_test_transparent dead:beef:3::1 "tproxy ipv6" 961log_if_error "Tests with tproxy have failed" 962 963run_tests_disconnect 964log_if_error "Tests of the full disconnection have failed" 965 966display_time 967mptcp_lib_result_print_all_tap 968exit ${final_ret} 969