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