1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4. "$(dirname "${0}")/mptcp_lib.sh" 5 6time_start=$(date +%s) 7 8optstring="S:R:d:e:l:r:h4cm:f:t" 9ret=0 10sin="" 11sout="" 12cin="" 13cout="" 14ksft_skip=4 15capture=false 16timeout=30 17ipv6=true 18ethtool_random_on=true 19tc_delay="$((RANDOM%50))" 20tc_loss=$((RANDOM%101)) 21testmode="" 22sndbuf=0 23rcvbuf=0 24options_log=true 25do_tcp=0 26filesize=0 27 28if [ $tc_loss -eq 100 ];then 29 tc_loss=1% 30elif [ $tc_loss -ge 10 ]; then 31 tc_loss=0.$tc_loss% 32elif [ $tc_loss -ge 1 ]; then 33 tc_loss=0.0$tc_loss% 34else 35 tc_loss="" 36fi 37 38usage() { 39 echo "Usage: $0 [ -a ]" 40 echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" 41 echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" 42 echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" 43 echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" 44 echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" 45 echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" 46 echo -e "\t-f: size of file to transfer in bytes (default random)" 47 echo -e "\t-S: set sndbuf value (default: use kernel default)" 48 echo -e "\t-R: set rcvbuf value (default: use kernel default)" 49 echo -e "\t-m: test mode (poll, sendfile; default: poll)" 50 echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)" 51} 52 53while getopts "$optstring" option;do 54 case "$option" in 55 "h") 56 usage $0 57 exit 0 58 ;; 59 "d") 60 if [ $OPTARG -ge 0 ];then 61 tc_delay="$OPTARG" 62 else 63 echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2 64 exit 1 65 fi 66 ;; 67 "e") 68 ethtool_args="$ethtool_args $OPTARG off" 69 ethtool_random_on=false 70 ;; 71 "l") 72 tc_loss="$OPTARG" 73 ;; 74 "r") 75 tc_reorder="$OPTARG" 76 ;; 77 "4") 78 ipv6=false 79 ;; 80 "c") 81 capture=true 82 ;; 83 "S") 84 if [ $OPTARG -ge 0 ];then 85 sndbuf="$OPTARG" 86 else 87 echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2 88 exit 1 89 fi 90 ;; 91 "R") 92 if [ $OPTARG -ge 0 ];then 93 rcvbuf="$OPTARG" 94 else 95 echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2 96 exit 1 97 fi 98 ;; 99 "m") 100 testmode="$OPTARG" 101 ;; 102 "f") 103 filesize="$OPTARG" 104 ;; 105 "t") 106 do_tcp=$((do_tcp+1)) 107 ;; 108 "?") 109 usage $0 110 exit 1 111 ;; 112 esac 113done 114 115sec=$(date +%s) 116rndh=$(printf %x $sec)-$(mktemp -u XXXXXX) 117ns1="ns1-$rndh" 118ns2="ns2-$rndh" 119ns3="ns3-$rndh" 120ns4="ns4-$rndh" 121 122TEST_COUNT=0 123 124cleanup() 125{ 126 rm -f "$cin" "$cout" 127 rm -f "$sin" "$sout" 128 rm -f "$capout" 129 130 local netns 131 for netns in "$ns1" "$ns2" "$ns3" "$ns4";do 132 ip netns del $netns 133 done 134} 135 136mptcp_lib_check_mptcp 137 138ip -Version > /dev/null 2>&1 139if [ $? -ne 0 ];then 140 echo "SKIP: Could not run test without ip tool" 141 exit $ksft_skip 142fi 143 144sin=$(mktemp) 145sout=$(mktemp) 146cin=$(mktemp) 147cout=$(mktemp) 148capout=$(mktemp) 149trap cleanup EXIT 150 151for i in "$ns1" "$ns2" "$ns3" "$ns4";do 152 ip netns add $i || exit $ksft_skip 153 ip -net $i link set lo up 154done 155 156# "$ns1" ns2 ns3 ns4 157# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 158# - drop 1% -> reorder 25% 159# <- TSO off - 160 161ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 162ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 163ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 164 165ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 166ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 167 168ip -net "$ns1" link set ns1eth2 up 169ip -net "$ns1" route add default via 10.0.1.2 170ip -net "$ns1" route add default via dead:beef:1::2 171 172ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 173ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 174ip -net "$ns2" link set ns2eth1 up 175 176ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 177ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 178ip -net "$ns2" link set ns2eth3 up 179ip -net "$ns2" route add default via 10.0.2.2 180ip -net "$ns2" route add default via dead:beef:2::2 181ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 182ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 183 184ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 185ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 186ip -net "$ns3" link set ns3eth2 up 187 188ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 189ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 190ip -net "$ns3" link set ns3eth4 up 191ip -net "$ns3" route add default via 10.0.2.1 192ip -net "$ns3" route add default via dead:beef:2::1 193ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 194ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 195 196ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 197ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 198ip -net "$ns4" link set ns4eth3 up 199ip -net "$ns4" route add default via 10.0.3.2 200ip -net "$ns4" route add default via dead:beef:3::2 201 202set_ethtool_flags() { 203 local ns="$1" 204 local dev="$2" 205 local flags="$3" 206 207 ip netns exec $ns ethtool -K $dev $flags 2>/dev/null 208 [ $? -eq 0 ] && echo "INFO: set $ns dev $dev: ethtool -K $flags" 209} 210 211set_random_ethtool_flags() { 212 local flags="" 213 local r=$RANDOM 214 215 local pick1=$((r & 1)) 216 local pick2=$((r & 2)) 217 local pick3=$((r & 4)) 218 219 [ $pick1 -ne 0 ] && flags="tso off" 220 [ $pick2 -ne 0 ] && flags="$flags gso off" 221 [ $pick3 -ne 0 ] && flags="$flags gro off" 222 223 [ -z "$flags" ] && return 224 225 set_ethtool_flags "$1" "$2" "$flags" 226} 227 228if $ethtool_random_on;then 229 set_random_ethtool_flags "$ns3" ns3eth2 230 set_random_ethtool_flags "$ns4" ns4eth3 231else 232 set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" 233 set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" 234fi 235 236print_file_err() 237{ 238 ls -l "$1" 1>&2 239 echo "Trailing bytes are: " 240 tail -c 27 "$1" 241} 242 243check_transfer() 244{ 245 local in=$1 246 local out=$2 247 local what=$3 248 249 cmp "$in" "$out" > /dev/null 2>&1 250 if [ $? -ne 0 ] ;then 251 echo "[ FAIL ] $what does not match (in, out):" 252 print_file_err "$in" 253 print_file_err "$out" 254 255 return 1 256 fi 257 258 return 0 259} 260 261check_mptcp_disabled() 262{ 263 local disabled_ns 264 disabled_ns="ns_disabled-$sech-$(mktemp -u XXXXXX)" 265 ip netns add ${disabled_ns} || exit $ksft_skip 266 267 # net.mptcp.enabled should be enabled by default 268 if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then 269 echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]" 270 ret=1 271 return 1 272 fi 273 ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 274 275 local err=0 276 LANG=C ip netns exec ${disabled_ns} ./mptcp_connect -t $timeout -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ 277 grep -q "^socket: Protocol not available$" && err=1 278 ip netns delete ${disabled_ns} 279 280 if [ ${err} -eq 0 ]; then 281 echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" 282 ret=1 283 return 1 284 fi 285 286 echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" 287 return 0 288} 289 290check_mptcp_ulp_setsockopt() 291{ 292 local t retval 293 t="ns_ulp-$sech-$(mktemp -u XXXXXX)" 294 295 ip netns add ${t} || exit $ksft_skip 296 if ! ip netns exec ${t} ./mptcp_connect -u -p 10000 -s TCP 127.0.0.1 2>&1; then 297 printf "setsockopt(..., TCP_ULP, \"mptcp\", ...) allowed\t[ FAIL ]\n" 298 retval=1 299 ret=$retval 300 else 301 printf "setsockopt(..., TCP_ULP, \"mptcp\", ...) blocked\t[ OK ]\n" 302 retval=0 303 fi 304 ip netns del ${t} 305 return $retval 306} 307 308# $1: IP address 309is_v6() 310{ 311 [ -z "${1##*:*}" ] 312} 313 314do_ping() 315{ 316 local listener_ns="$1" 317 local connector_ns="$2" 318 local connect_addr="$3" 319 local ping_args="-q -c 1" 320 321 if is_v6 "${connect_addr}"; then 322 $ipv6 || return 0 323 ping_args="${ping_args} -6" 324 fi 325 326 ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null 327 if [ $? -ne 0 ] ; then 328 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 329 ret=1 330 331 return 1 332 fi 333 334 return 0 335} 336 337# $1: ns, $2: port 338wait_local_port_listen() 339{ 340 local listener_ns="${1}" 341 local port="${2}" 342 343 local port_hex i 344 345 port_hex="$(printf "%04X" "${port}")" 346 for i in $(seq 10); do 347 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ 348 awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && 349 break 350 sleep 0.1 351 done 352} 353 354do_transfer() 355{ 356 local listener_ns="$1" 357 local connector_ns="$2" 358 local cl_proto="$3" 359 local srv_proto="$4" 360 local connect_addr="$5" 361 local local_addr="$6" 362 local extra_args="" 363 364 local port 365 port=$((10000+$TEST_COUNT)) 366 TEST_COUNT=$((TEST_COUNT+1)) 367 368 if [ "$rcvbuf" -gt 0 ]; then 369 extra_args="$extra_args -R $rcvbuf" 370 fi 371 372 if [ "$sndbuf" -gt 0 ]; then 373 extra_args="$extra_args -S $sndbuf" 374 fi 375 376 if [ -n "$testmode" ]; then 377 extra_args="$extra_args -m $testmode" 378 fi 379 380 if [ -n "$extra_args" ] && $options_log; then 381 options_log=false 382 echo "INFO: extra options: $extra_args" 383 fi 384 385 :> "$cout" 386 :> "$sout" 387 :> "$capout" 388 389 local addr_port 390 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 391 printf "%.3s %-5s -> %.3s (%-20s) %-5s\t" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto} 392 393 if $capture; then 394 local capuser 395 if [ -z $SUDO_USER ] ; then 396 capuser="" 397 else 398 capuser="-Z $SUDO_USER" 399 fi 400 401 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 402 local capopt="-i any -s 65535 -B 32768 ${capuser}" 403 404 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 405 local cappid_listener=$! 406 407 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 408 local cappid_connector=$! 409 410 sleep 1 411 fi 412 413 local stat_synrx_last_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableSYNRX | while read a count c rest ;do echo $count;done) 414 local stat_ackrx_last_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableACKRX | while read a count c rest ;do echo $count;done) 415 local stat_cookietx_last=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesSent | while read a count c rest ;do echo $count;done) 416 local stat_cookierx_last=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesRecv | while read a count c rest ;do echo $count;done) 417 418 ip netns exec ${listener_ns} ./mptcp_connect -t $timeout -l -p $port -s ${srv_proto} $extra_args $local_addr < "$sin" > "$sout" & 419 local spid=$! 420 421 wait_local_port_listen "${listener_ns}" "${port}" 422 423 local start 424 start=$(date +%s%3N) 425 ip netns exec ${connector_ns} ./mptcp_connect -t $timeout -p $port -s ${cl_proto} $extra_args $connect_addr < "$cin" > "$cout" & 426 local cpid=$! 427 428 wait $cpid 429 local retc=$? 430 wait $spid 431 local rets=$? 432 433 local stop 434 stop=$(date +%s%3N) 435 436 if $capture; then 437 sleep 1 438 kill ${cappid_listener} 439 kill ${cappid_connector} 440 fi 441 442 local duration 443 duration=$((stop-start)) 444 duration=$(printf "(duration %05sms)" $duration) 445 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 446 echo "$duration [ FAIL ] client exit code $retc, server $rets" 1>&2 447 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 448 ip netns exec ${listener_ns} ss -nita 1>&2 -o "sport = :$port" 449 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 450 ip netns exec ${connector_ns} ss -nita 1>&2 -o "dport = :$port" 451 452 cat "$capout" 453 return 1 454 fi 455 456 check_transfer $sin $cout "file received by client" 457 retc=$? 458 check_transfer $cin $sout "file received by server" 459 rets=$? 460 461 local stat_synrx_now_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableSYNRX | while read a count c rest ;do echo $count;done) 462 local stat_ackrx_now_l=$(ip netns exec ${listener_ns} nstat -z -a MPTcpExtMPCapableACKRX | while read a count c rest ;do echo $count;done) 463 464 local stat_cookietx_now=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesSent | while read a count c rest ;do echo $count;done) 465 local stat_cookierx_now=$(ip netns exec ${listener_ns} nstat -z -a TcpExtSyncookiesRecv | while read a count c rest ;do echo $count;done) 466 467 expect_synrx=$((stat_synrx_last_l)) 468 expect_ackrx=$((stat_ackrx_last_l)) 469 470 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 471 cookies=${cookies##*=} 472 473 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 474 expect_synrx=$((stat_synrx_last_l+1)) 475 expect_ackrx=$((stat_ackrx_last_l+1)) 476 fi 477 if [ $cookies -eq 2 ];then 478 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 479 echo "${listener_ns} CookieSent: ${cl_proto} -> ${srv_proto}: did not advance" 480 fi 481 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 482 echo "${listener_ns} CookieRecv: ${cl_proto} -> ${srv_proto}: did not advance" 483 fi 484 else 485 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 486 echo "${listener_ns} CookieSent: ${cl_proto} -> ${srv_proto}: changed" 487 fi 488 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 489 echo "${listener_ns} CookieRecv: ${cl_proto} -> ${srv_proto}: changed" 490 fi 491 fi 492 493 if [ $expect_synrx -ne $stat_synrx_now_l ] ;then 494 echo "${listener_ns} SYNRX: ${cl_proto} -> ${srv_proto}: expect ${expect_synrx}, got ${stat_synrx_now_l}" 495 fi 496 if [ $expect_ackrx -ne $stat_ackrx_now_l ] ;then 497 echo "${listener_ns} ACKRX: ${cl_proto} -> ${srv_proto}: expect ${expect_ackrx}, got ${stat_ackrx_now_l} " 498 fi 499 500 if [ $retc -eq 0 ] && [ $rets -eq 0 ];then 501 echo "$duration [ OK ]" 502 cat "$capout" 503 return 0 504 fi 505 506 cat "$capout" 507 return 1 508} 509 510make_file() 511{ 512 local name=$1 513 local who=$2 514 local SIZE=$filesize 515 local ksize 516 local rem 517 518 if [ $SIZE -eq 0 ]; then 519 local MAXSIZE=$((1024 * 1024 * 8)) 520 local MINSIZE=$((1024 * 256)) 521 522 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 523 fi 524 525 ksize=$((SIZE / 1024)) 526 rem=$((SIZE - (ksize * 1024))) 527 528 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 529 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 530 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 531 532 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 533} 534 535run_tests_lo() 536{ 537 local listener_ns="$1" 538 local connector_ns="$2" 539 local connect_addr="$3" 540 local loopback="$4" 541 local lret=0 542 543 # skip if test programs are running inside same netns for subsequent runs. 544 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 545 return 0 546 fi 547 548 # skip if we don't want v6 549 if ! $ipv6 && is_v6 "${connect_addr}"; then 550 return 0 551 fi 552 553 local local_addr 554 if is_v6 "${connect_addr}"; then 555 local_addr="::" 556 else 557 local_addr="0.0.0.0" 558 fi 559 560 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP ${connect_addr} ${local_addr} 561 lret=$? 562 if [ $lret -ne 0 ]; then 563 ret=$lret 564 return 1 565 fi 566 567 if [ $do_tcp -eq 0 ]; then 568 # don't bother testing fallback tcp except for loopback case. 569 if [ ${listener_ns} != ${connector_ns} ]; then 570 return 0 571 fi 572 fi 573 574 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP ${connect_addr} ${local_addr} 575 lret=$? 576 if [ $lret -ne 0 ]; then 577 ret=$lret 578 return 1 579 fi 580 581 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP ${connect_addr} ${local_addr} 582 lret=$? 583 if [ $lret -ne 0 ]; then 584 ret=$lret 585 return 1 586 fi 587 588 if [ $do_tcp -gt 1 ] ;then 589 do_transfer ${listener_ns} ${connector_ns} TCP TCP ${connect_addr} ${local_addr} 590 lret=$? 591 if [ $lret -ne 0 ]; then 592 ret=$lret 593 return 1 594 fi 595 fi 596 597 return 0 598} 599 600run_tests() 601{ 602 run_tests_lo $1 $2 $3 0 603} 604 605make_file "$cin" "client" 606make_file "$sin" "server" 607 608check_mptcp_disabled 609 610check_mptcp_ulp_setsockopt 611 612echo "INFO: validating network environment with pings" 613for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 614 do_ping "$ns1" $sender 10.0.1.1 615 do_ping "$ns1" $sender dead:beef:1::1 616 617 do_ping "$ns2" $sender 10.0.1.2 618 do_ping "$ns2" $sender dead:beef:1::2 619 do_ping "$ns2" $sender 10.0.2.1 620 do_ping "$ns2" $sender dead:beef:2::1 621 622 do_ping "$ns3" $sender 10.0.2.2 623 do_ping "$ns3" $sender dead:beef:2::2 624 do_ping "$ns3" $sender 10.0.3.2 625 do_ping "$ns3" $sender dead:beef:3::2 626 627 do_ping "$ns4" $sender 10.0.3.1 628 do_ping "$ns4" $sender dead:beef:3::1 629done 630 631[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 632echo -n "INFO: Using loss of $tc_loss " 633test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " 634 635reorder_delay=$(($tc_delay / 4)) 636 637if [ -z "${tc_reorder}" ]; then 638 reorder1=$((RANDOM%10)) 639 reorder1=$((100 - reorder1)) 640 reorder2=$((RANDOM%100)) 641 642 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 643 tc_reorder="reorder ${reorder1}% ${reorder2}%" 644 echo -n "$tc_reorder with delay ${reorder_delay}ms " 645 fi 646elif [ "$tc_reorder" = "0" ];then 647 tc_reorder="" 648elif [ "$reorder_delay" -gt 0 ];then 649 # reordering requires some delay 650 tc_reorder="reorder $tc_reorder" 651 echo -n "$tc_reorder with delay ${reorder_delay}ms " 652fi 653 654echo "on ns3eth4" 655 656tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 657 658for sender in $ns1 $ns2 $ns3 $ns4;do 659 run_tests_lo "$ns1" "$sender" 10.0.1.1 1 660 if [ $ret -ne 0 ] ;then 661 echo "FAIL: Could not even run loopback test" 1>&2 662 exit $ret 663 fi 664 run_tests_lo "$ns1" $sender dead:beef:1::1 1 665 if [ $ret -ne 0 ] ;then 666 echo "FAIL: Could not even run loopback v6 test" 2>&1 667 exit $ret 668 fi 669 670 # ns1<->ns2 is not subject to reordering/tc delays. Use it to test 671 # mptcp syncookie support. 672 if [ $sender = $ns1 ]; then 673 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 674 else 675 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 676 fi 677 678 run_tests "$ns2" $sender 10.0.1.2 679 run_tests "$ns2" $sender dead:beef:1::2 680 run_tests "$ns2" $sender 10.0.2.1 681 run_tests "$ns2" $sender dead:beef:2::1 682 683 run_tests "$ns3" $sender 10.0.2.2 684 run_tests "$ns3" $sender dead:beef:2::2 685 run_tests "$ns3" $sender 10.0.3.2 686 run_tests "$ns3" $sender dead:beef:3::2 687 688 run_tests "$ns4" $sender 10.0.3.1 689 run_tests "$ns4" $sender dead:beef:3::1 690done 691 692time_end=$(date +%s) 693time_run=$((time_end-time_start)) 694 695echo "Time: ${time_run} seconds" 696 697exit $ret 698