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 $netns 131 rm -f /tmp/$netns.{nstat,out} 132 done 133} 134 135ip -Version > /dev/null 2>&1 136if [ $? -ne 0 ];then 137 echo "SKIP: Could not run test without ip tool" 138 exit $ksft_skip 139fi 140 141sin=$(mktemp) 142sout=$(mktemp) 143cin=$(mktemp) 144cout=$(mktemp) 145capout=$(mktemp) 146trap cleanup EXIT 147 148for i in "$ns1" "$ns2" "$ns3" "$ns4";do 149 ip netns add $i || exit $ksft_skip 150 ip -net $i link set lo up 151done 152 153# "$ns1" ns2 ns3 ns4 154# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 155# - drop 1% -> reorder 25% 156# <- TSO off - 157 158ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" 159ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" 160ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" 161 162ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 163ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad 164 165ip -net "$ns1" link set ns1eth2 up 166ip -net "$ns1" route add default via 10.0.1.2 167ip -net "$ns1" route add default via dead:beef:1::2 168 169ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 170ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad 171ip -net "$ns2" link set ns2eth1 up 172 173ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 174ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad 175ip -net "$ns2" link set ns2eth3 up 176ip -net "$ns2" route add default via 10.0.2.2 177ip -net "$ns2" route add default via dead:beef:2::2 178ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 179ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 180 181ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 182ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad 183ip -net "$ns3" link set ns3eth2 up 184 185ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 186ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad 187ip -net "$ns3" link set ns3eth4 up 188ip -net "$ns3" route add default via 10.0.2.1 189ip -net "$ns3" route add default via dead:beef:2::1 190ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 191ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 192 193ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 194ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad 195ip -net "$ns4" link set ns4eth3 up 196ip -net "$ns4" route add default via 10.0.3.2 197ip -net "$ns4" route add default via dead:beef:3::2 198 199# use TCP syn cookies, even if no flooding was detected. 200ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=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, $2: MIB counter 338get_mib_counter() 339{ 340 local listener_ns="${1}" 341 local mib="${2}" 342 343 # strip the header 344 ip netns exec "${listener_ns}" \ 345 nstat -z -a "${mib}" | \ 346 tail -n+2 | \ 347 while read a count c rest; do 348 echo $count 349 done 350} 351 352# $1: ns, $2: port 353wait_local_port_listen() 354{ 355 local listener_ns="${1}" 356 local port="${2}" 357 358 local port_hex i 359 360 port_hex="$(printf "%04X" "${port}")" 361 for i in $(seq 10); do 362 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ 363 awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && 364 break 365 sleep 0.1 366 done 367} 368 369do_transfer() 370{ 371 local listener_ns="$1" 372 local connector_ns="$2" 373 local cl_proto="$3" 374 local srv_proto="$4" 375 local connect_addr="$5" 376 local local_addr="$6" 377 local extra_args="" 378 379 local port 380 port=$((10000+$TEST_COUNT)) 381 TEST_COUNT=$((TEST_COUNT+1)) 382 383 if [ "$rcvbuf" -gt 0 ]; then 384 extra_args="$extra_args -R $rcvbuf" 385 fi 386 387 if [ "$sndbuf" -gt 0 ]; then 388 extra_args="$extra_args -S $sndbuf" 389 fi 390 391 if [ -n "$testmode" ]; then 392 extra_args="$extra_args -m $testmode" 393 fi 394 395 if [ -n "$extra_args" ] && $options_log; then 396 options_log=false 397 echo "INFO: extra options: $extra_args" 398 fi 399 400 :> "$cout" 401 :> "$sout" 402 :> "$capout" 403 404 local addr_port 405 addr_port=$(printf "%s:%d" ${connect_addr} ${port}) 406 printf "%.3s %-5s -> %.3s (%-20s) %-5s\t" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto} 407 408 if $capture; then 409 local capuser 410 if [ -z $SUDO_USER ] ; then 411 capuser="" 412 else 413 capuser="-Z $SUDO_USER" 414 fi 415 416 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" 417 local capopt="-i any -s 65535 -B 32768 ${capuser}" 418 419 ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & 420 local cappid_listener=$! 421 422 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & 423 local cappid_connector=$! 424 425 sleep 1 426 fi 427 428 local stat_synrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 429 local stat_ackrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 430 local stat_cookietx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 431 local stat_cookierx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 432 433 ip netns exec ${listener_ns} ./mptcp_connect -t $timeout -l -p $port -s ${srv_proto} $extra_args $local_addr < "$sin" > "$sout" & 434 local spid=$! 435 436 wait_local_port_listen "${listener_ns}" "${port}" 437 438 local start 439 start=$(date +%s%3N) 440 ip netns exec ${connector_ns} ./mptcp_connect -t $timeout -p $port -s ${cl_proto} $extra_args $connect_addr < "$cin" > "$cout" & 441 local cpid=$! 442 443 wait $cpid 444 local retc=$? 445 wait $spid 446 local rets=$? 447 448 local stop 449 stop=$(date +%s%3N) 450 451 if $capture; then 452 sleep 1 453 kill ${cappid_listener} 454 kill ${cappid_connector} 455 fi 456 457 NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ 458 nstat | grep Tcp > /tmp/${listener_ns}.out 459 if [ ${listener_ns} != ${connector_ns} ]; then 460 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ 461 nstat | grep Tcp > /tmp/${connector_ns}.out 462 fi 463 464 local duration 465 duration=$((stop-start)) 466 printf "(duration %05sms) " "${duration}" 467 if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then 468 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 469 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 470 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" 471 cat /tmp/${listener_ns}.out 472 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 473 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" 474 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out 475 476 echo 477 cat "$capout" 478 return 1 479 fi 480 481 check_transfer $sin $cout "file received by client" 482 retc=$? 483 check_transfer $cin $sout "file received by server" 484 rets=$? 485 486 local stat_synrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") 487 local stat_ackrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") 488 local stat_cookietx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") 489 local stat_cookierx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") 490 491 expect_synrx=$((stat_synrx_last_l)) 492 expect_ackrx=$((stat_ackrx_last_l)) 493 494 cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) 495 cookies=${cookies##*=} 496 497 if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then 498 expect_synrx=$((stat_synrx_last_l+1)) 499 expect_ackrx=$((stat_ackrx_last_l+1)) 500 fi 501 502 if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then 503 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ 504 "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 505 retc=1 506 fi 507 if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} ]; then 508 printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ 509 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 510 rets=1 511 fi 512 513 if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then 514 printf "[ OK ]" 515 fi 516 517 if [ $cookies -eq 2 ];then 518 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then 519 printf " WARN: CookieSent: did not advance" 520 fi 521 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then 522 printf " WARN: CookieRecv: did not advance" 523 fi 524 else 525 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then 526 printf " WARN: CookieSent: changed" 527 fi 528 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then 529 printf " WARN: CookieRecv: changed" 530 fi 531 fi 532 533 if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then 534 printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \ 535 "${expect_synrx}" "${stat_synrx_now_l}" 536 fi 537 if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then 538 printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \ 539 "${expect_ackrx}" "${stat_ackrx_now_l}" 540 fi 541 542 echo 543 cat "$capout" 544 [ $retc -eq 0 ] && [ $rets -eq 0 ] 545} 546 547make_file() 548{ 549 local name=$1 550 local who=$2 551 local SIZE=$filesize 552 local ksize 553 local rem 554 555 if [ $SIZE -eq 0 ]; then 556 local MAXSIZE=$((1024 * 1024 * 8)) 557 local MINSIZE=$((1024 * 256)) 558 559 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) 560 fi 561 562 ksize=$((SIZE / 1024)) 563 rem=$((SIZE - (ksize * 1024))) 564 565 dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null 566 dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null 567 echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" 568 569 echo "Created $name (size $(du -b "$name")) containing data sent by $who" 570} 571 572run_tests_lo() 573{ 574 local listener_ns="$1" 575 local connector_ns="$2" 576 local connect_addr="$3" 577 local loopback="$4" 578 local lret=0 579 580 # skip if test programs are running inside same netns for subsequent runs. 581 if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then 582 return 0 583 fi 584 585 # skip if we don't want v6 586 if ! $ipv6 && is_v6 "${connect_addr}"; then 587 return 0 588 fi 589 590 local local_addr 591 if is_v6 "${connect_addr}"; then 592 local_addr="::" 593 else 594 local_addr="0.0.0.0" 595 fi 596 597 do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP ${connect_addr} ${local_addr} 598 lret=$? 599 if [ $lret -ne 0 ]; then 600 ret=$lret 601 return 1 602 fi 603 604 if [ $do_tcp -eq 0 ]; then 605 # don't bother testing fallback tcp except for loopback case. 606 if [ ${listener_ns} != ${connector_ns} ]; then 607 return 0 608 fi 609 fi 610 611 do_transfer ${listener_ns} ${connector_ns} MPTCP TCP ${connect_addr} ${local_addr} 612 lret=$? 613 if [ $lret -ne 0 ]; then 614 ret=$lret 615 return 1 616 fi 617 618 do_transfer ${listener_ns} ${connector_ns} TCP MPTCP ${connect_addr} ${local_addr} 619 lret=$? 620 if [ $lret -ne 0 ]; then 621 ret=$lret 622 return 1 623 fi 624 625 if [ $do_tcp -gt 1 ] ;then 626 do_transfer ${listener_ns} ${connector_ns} TCP TCP ${connect_addr} ${local_addr} 627 lret=$? 628 if [ $lret -ne 0 ]; then 629 ret=$lret 630 return 1 631 fi 632 fi 633 634 return 0 635} 636 637run_tests() 638{ 639 run_tests_lo $1 $2 $3 0 640} 641 642make_file "$cin" "client" 643make_file "$sin" "server" 644 645check_mptcp_disabled 646 647check_mptcp_ulp_setsockopt 648 649echo "INFO: validating network environment with pings" 650for sender in "$ns1" "$ns2" "$ns3" "$ns4";do 651 do_ping "$ns1" $sender 10.0.1.1 652 do_ping "$ns1" $sender dead:beef:1::1 653 654 do_ping "$ns2" $sender 10.0.1.2 655 do_ping "$ns2" $sender dead:beef:1::2 656 do_ping "$ns2" $sender 10.0.2.1 657 do_ping "$ns2" $sender dead:beef:2::1 658 659 do_ping "$ns3" $sender 10.0.2.2 660 do_ping "$ns3" $sender dead:beef:2::2 661 do_ping "$ns3" $sender 10.0.3.2 662 do_ping "$ns3" $sender dead:beef:3::2 663 664 do_ping "$ns4" $sender 10.0.3.1 665 do_ping "$ns4" $sender dead:beef:3::1 666done 667 668[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms 669echo -n "INFO: Using loss of $tc_loss " 670test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " 671 672reorder_delay=$(($tc_delay / 4)) 673 674if [ -z "${tc_reorder}" ]; then 675 reorder1=$((RANDOM%10)) 676 reorder1=$((100 - reorder1)) 677 reorder2=$((RANDOM%100)) 678 679 if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then 680 tc_reorder="reorder ${reorder1}% ${reorder2}%" 681 echo -n "$tc_reorder with delay ${reorder_delay}ms " 682 fi 683elif [ "$tc_reorder" = "0" ];then 684 tc_reorder="" 685elif [ "$reorder_delay" -gt 0 ];then 686 # reordering requires some delay 687 tc_reorder="reorder $tc_reorder" 688 echo -n "$tc_reorder with delay ${reorder_delay}ms " 689fi 690 691echo "on ns3eth4" 692 693tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder 694 695for sender in $ns1 $ns2 $ns3 $ns4;do 696 run_tests_lo "$ns1" "$sender" 10.0.1.1 1 697 if [ $ret -ne 0 ] ;then 698 echo "FAIL: Could not even run loopback test" 1>&2 699 exit $ret 700 fi 701 run_tests_lo "$ns1" $sender dead:beef:1::1 1 702 if [ $ret -ne 0 ] ;then 703 echo "FAIL: Could not even run loopback v6 test" 2>&1 704 exit $ret 705 fi 706 707 run_tests "$ns2" $sender 10.0.1.2 708 run_tests "$ns2" $sender dead:beef:1::2 709 run_tests "$ns2" $sender 10.0.2.1 710 run_tests "$ns2" $sender dead:beef:2::1 711 712 run_tests "$ns3" $sender 10.0.2.2 713 run_tests "$ns3" $sender dead:beef:2::2 714 run_tests "$ns3" $sender 10.0.3.2 715 run_tests "$ns3" $sender dead:beef:3::2 716 717 run_tests "$ns4" $sender 10.0.3.1 718 run_tests "$ns4" $sender dead:beef:3::1 719done 720 721time_end=$(date +%s) 722time_run=$((time_end-time_start)) 723 724echo "Time: ${time_run} seconds" 725 726exit $ret 727