tools/testing/selftests/net/mptcp/mptcp_connect.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 time_start=$(date +%s)
   5
   6 optstring="S:R:d:e:l:r:h4cm:f:tC"
   7 ret=0
   8 sin=""
   9 sout=""
  10 cin=""
  11 cout=""
  12 ksft_skip=4
  13 capture=false
  14 timeout_poll=30
  15 timeout_test=$((timeout_poll * 2 + 1))
  16 ipv6=true
  17 ethtool_random_on=true
  18 tc_delay="$((RANDOM%50))"
  19 tc_loss=$((RANDOM%101))
  20 testmode=""
  21 sndbuf=0
  22 rcvbuf=0
  23 options_log=true
  24 do_tcp=0
  25 checksum=false
  26 filesize=0
  27
  28 if [ $tc_loss -eq 100 ];then
  29         tc_loss=1%
  30 elif [ $tc_loss -ge 10 ]; then
  31         tc_loss=0.$tc_loss%
  32 elif [ $tc_loss -ge 1 ]; then
  33         tc_loss=0.0$tc_loss%
  34 else
  35         tc_loss=""
  36 fi
  37
  38 usage() {
  39         echo "Usage: $0 [ -a ]"
  40         echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)"
  41         echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)"
  42         echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)"
  43         echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)"
  44         echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)"
  45         echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)"
  46         echo -e "\t-f: size of file to transfer in bytes (default random)"
  47         echo -e "\t-S: set sndbuf value (default: use kernel default)"
  48         echo -e "\t-R: set rcvbuf value (default: use kernel default)"
  49         echo -e "\t-m: test mode (poll, sendfile; default: poll)"
  50         echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)"
  51         echo -e "\t-C: enable the MPTCP data checksum"
  52 }
  53
  54 while getopts "$optstring" option;do
  55         case "$option" in
  56         "h")
  57                 usage $0
  58                 exit 0
  59                 ;;
  60         "d")
  61                 if [ $OPTARG -ge 0 ];then
  62                         tc_delay="$OPTARG"
  63                 else
  64                         echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2
  65                         exit 1
  66                 fi
  67                 ;;
  68         "e")
  69                 ethtool_args="$ethtool_args $OPTARG off"
  70                 ethtool_random_on=false
  71                 ;;
  72         "l")
  73                 tc_loss="$OPTARG"
  74                 ;;
  75         "r")
  76                 tc_reorder="$OPTARG"
  77                 ;;
  78         "4")
  79                 ipv6=false
  80                 ;;
  81         "c")
  82                 capture=true
  83                 ;;
  84         "S")
  85                 if [ $OPTARG -ge 0 ];then
  86                         sndbuf="$OPTARG"
  87                 else
  88                         echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2
  89                         exit 1
  90                 fi
  91                 ;;
  92         "R")
  93                 if [ $OPTARG -ge 0 ];then
  94                         rcvbuf="$OPTARG"
  95                 else
  96                         echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2
  97                         exit 1
  98                 fi
  99                 ;;
 100         "m")
 101                 testmode="$OPTARG"
 102                 ;;
 103         "f")
 104                 filesize="$OPTARG"
 105                 ;;
 106         "t")
 107                 do_tcp=$((do_tcp+1))
 108                 ;;
 109         "C")
 110                 checksum=true
 111                 ;;
 112         "?")
 113                 usage $0
 114                 exit 1
 115                 ;;
 116         esac
 117 done
 118
 119 sec=$(date +%s)
 120 rndh=$(printf %x $sec)-$(mktemp -u XXXXXX)
 121 ns1="ns1-$rndh"
 122 ns2="ns2-$rndh"
 123 ns3="ns3-$rndh"
 124 ns4="ns4-$rndh"
 125
 126 TEST_COUNT=0
 127
 128 cleanup()
 129 {
 130         rm -f "$cin" "$cout"
 131         rm -f "$sin" "$sout"
 132         rm -f "$capout"
 133
 134         local netns
 135         for netns in "$ns1" "$ns2" "$ns3" "$ns4";do
 136                 ip netns del $netns
 137                 rm -f /tmp/$netns.{nstat,out}
 138         done
 139 }
 140
 141 ip -Version > /dev/null 2>&1
 142 if [ $? -ne 0 ];then
 143         echo "SKIP: Could not run test without ip tool"
 144         exit $ksft_skip
 145 fi
 146
 147 sin=$(mktemp)
 148 sout=$(mktemp)
 149 cin=$(mktemp)
 150 cout=$(mktemp)
 151 capout=$(mktemp)
 152 trap cleanup EXIT
 153
 154 for i in "$ns1" "$ns2" "$ns3" "$ns4";do
 155         ip netns add $i || exit $ksft_skip
 156         ip -net $i link set lo up
 157 done
 158
 159 #  "$ns1"              ns2                    ns3                     ns4
 160 # ns1eth2    ns2eth1   ns2eth3      ns3eth2   ns3eth4       ns4eth3
 161 #                           - drop 1% ->            reorder 25%
 162 #                           <- TSO off -
 163
 164 ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2"
 165 ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3"
 166 ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4"
 167
 168 ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2
 169 ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad
 170
 171 ip -net "$ns1" link set ns1eth2 up
 172 ip -net "$ns1" route add default via 10.0.1.2
 173 ip -net "$ns1" route add default via dead:beef:1::2
 174
 175 ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1
 176 ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad
 177 ip -net "$ns2" link set ns2eth1 up
 178
 179 ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3
 180 ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad
 181 ip -net "$ns2" link set ns2eth3 up
 182 ip -net "$ns2" route add default via 10.0.2.2
 183 ip -net "$ns2" route add default via dead:beef:2::2
 184 ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1
 185 ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1
 186
 187 ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2
 188 ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad
 189 ip -net "$ns3" link set ns3eth2 up
 190
 191 ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4
 192 ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad
 193 ip -net "$ns3" link set ns3eth4 up
 194 ip -net "$ns3" route add default via 10.0.2.1
 195 ip -net "$ns3" route add default via dead:beef:2::1
 196 ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1
 197 ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1
 198
 199 ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3
 200 ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad
 201 ip -net "$ns4" link set ns4eth3 up
 202 ip -net "$ns4" route add default via 10.0.3.2
 203 ip -net "$ns4" route add default via dead:beef:3::2
 204
 205 if $checksum; then
 206         for i in "$ns1" "$ns2" "$ns3" "$ns4";do
 207                 ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1
 208         done
 209 fi
 210
 211 set_ethtool_flags() {
 212         local ns="$1"
 213         local dev="$2"
 214         local flags="$3"
 215
 216         ip netns exec $ns ethtool -K $dev $flags 2>/dev/null
 217         [ $? -eq 0 ] && echo "INFO: set $ns dev $dev: ethtool -K $flags"
 218 }
 219
 220 set_random_ethtool_flags() {
 221         local flags=""
 222         local r=$RANDOM
 223
 224         local pick1=$((r & 1))
 225         local pick2=$((r & 2))
 226         local pick3=$((r & 4))
 227
 228         [ $pick1 -ne 0 ] && flags="tso off"
 229         [ $pick2 -ne 0 ] && flags="$flags gso off"
 230         [ $pick3 -ne 0 ] && flags="$flags gro off"
 231
 232         [ -z "$flags" ] && return
 233
 234         set_ethtool_flags "$1" "$2" "$flags"
 235 }
 236
 237 if $ethtool_random_on;then
 238         set_random_ethtool_flags "$ns3" ns3eth2
 239         set_random_ethtool_flags "$ns4" ns4eth3
 240 else
 241         set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args"
 242         set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args"
 243 fi
 244
 245 print_file_err()
 246 {
 247         ls -l "$1" 1>&2
 248         echo "Trailing bytes are: "
 249         tail -c 27 "$1"
 250 }
 251
 252 check_transfer()
 253 {
 254         local in=$1
 255         local out=$2
 256         local what=$3
 257
 258         cmp "$in" "$out" > /dev/null 2>&1
 259         if [ $? -ne 0 ] ;then
 260                 echo "[ FAIL ] $what does not match (in, out):"
 261                 print_file_err "$in"
 262                 print_file_err "$out"
 263
 264                 return 1
 265         fi
 266
 267         return 0
 268 }
 269
 270 check_mptcp_disabled()
 271 {
 272         local disabled_ns
 273         disabled_ns="ns_disabled-$sech-$(mktemp -u XXXXXX)"
 274         ip netns add ${disabled_ns} || exit $ksft_skip
 275
 276         # net.mptcp.enabled should be enabled by default
 277         if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then
 278                 echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]"
 279                 ret=1
 280                 return 1
 281         fi
 282         ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0
 283
 284         local err=0
 285         LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \
 286                 grep -q "^socket: Protocol not available$" && err=1
 287         ip netns delete ${disabled_ns}
 288
 289         if [ ${err} -eq 0 ]; then
 290                 echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]"
 291                 ret=1
 292                 return 1
 293         fi
 294
 295         echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]"
 296         return 0
 297 }
 298
 299 check_mptcp_ulp_setsockopt()
 300 {
 301         local t retval
 302         t="ns_ulp-$sech-$(mktemp -u XXXXXX)"
 303
 304         ip netns add ${t} || exit $ksft_skip
 305         if ! ip netns exec ${t} ./mptcp_connect -u -p 10000 -s TCP 127.0.0.1 2>&1; then
 306                 printf "setsockopt(..., TCP_ULP, \"mptcp\", ...) allowed\t[ FAIL ]\n"
 307                 retval=1
 308                 ret=$retval
 309         else
 310                 printf "setsockopt(..., TCP_ULP, \"mptcp\", ...) blocked\t[ OK ]\n"
 311                 retval=0
 312         fi
 313         ip netns del ${t}
 314         return $retval
 315 }
 316
 317 # $1: IP address
 318 is_v6()
 319 {
 320         [ -z "${1##*:*}" ]
 321 }
 322
 323 do_ping()
 324 {
 325         local listener_ns="$1"
 326         local connector_ns="$2"
 327         local connect_addr="$3"
 328         local ping_args="-q -c 1"
 329
 330         if is_v6 "${connect_addr}"; then
 331                 $ipv6 || return 0
 332                 ping_args="${ping_args} -6"
 333         fi
 334
 335         ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null
 336         if [ $? -ne 0 ] ; then
 337                 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2
 338                 ret=1
 339
 340                 return 1
 341         fi
 342
 343         return 0
 344 }
 345
 346 # $1: ns, $2: MIB counter
 347 get_mib_counter()
 348 {
 349         local listener_ns="${1}"
 350         local mib="${2}"
 351
 352         # strip the header
 353         ip netns exec "${listener_ns}" \
 354                 nstat -z -a "${mib}" | \
 355                         tail -n+2 | \
 356                         while read a count c rest; do
 357                                 echo $count
 358                         done
 359 }
 360
 361 # $1: ns, $2: port
 362 wait_local_port_listen()
 363 {
 364         local listener_ns="${1}"
 365         local port="${2}"
 366
 367         local port_hex i
 368
 369         port_hex="$(printf "%04X" "${port}")"
 370         for i in $(seq 10); do
 371                 ip netns exec "${listener_ns}" cat /proc/net/tcp* | \
 372                         awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" &&
 373                         break
 374                 sleep 0.1
 375         done
 376 }
 377
 378 do_transfer()
 379 {
 380         local listener_ns="$1"
 381         local connector_ns="$2"
 382         local cl_proto="$3"
 383         local srv_proto="$4"
 384         local connect_addr="$5"
 385         local local_addr="$6"
 386         local extra_args="$7"
 387
 388         local port
 389         port=$((10000+$TEST_COUNT))
 390         TEST_COUNT=$((TEST_COUNT+1))
 391
 392         if [ "$rcvbuf" -gt 0 ]; then
 393                 extra_args="$extra_args -R $rcvbuf"
 394         fi
 395
 396         if [ "$sndbuf" -gt 0 ]; then
 397                 extra_args="$extra_args -S $sndbuf"
 398         fi
 399
 400         if [ -n "$testmode" ]; then
 401                 extra_args="$extra_args -m $testmode"
 402         fi
 403
 404         if [ -n "$extra_args" ] && $options_log; then
 405                 echo "INFO: extra options: $extra_args"
 406         fi
 407         options_log=false
 408
 409         :> "$cout"
 410         :> "$sout"
 411         :> "$capout"
 412
 413         local addr_port
 414         addr_port=$(printf "%s:%d" ${connect_addr} ${port})
 415         printf "%.3s %-5s -> %.3s (%-20s) %-5s\t" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto}
 416
 417         if $capture; then
 418                 local capuser
 419                 if [ -z $SUDO_USER ] ; then
 420                         capuser=""
 421                 else
 422                         capuser="-Z $SUDO_USER"
 423                 fi
 424
 425                 local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}"
 426                 local capopt="-i any -s 65535 -B 32768 ${capuser}"
 427
 428                 ip netns exec ${listener_ns}  tcpdump ${capopt} -w "${capfile}-listener.pcap"  >> "${capout}" 2>&1 &
 429                 local cappid_listener=$!
 430
 431                 ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 &
 432                 local cappid_connector=$!
 433
 434                 sleep 1
 435         fi
 436
 437         NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \
 438                 nstat -n
 439         if [ ${listener_ns} != ${connector_ns} ]; then
 440                 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \
 441                         nstat -n
 442         fi
 443
 444         local stat_synrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX")
 445         local stat_ackrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX")
 446         local stat_cookietx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent")
 447         local stat_cookierx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv")
 448         local stat_csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr")
 449         local stat_csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr")
 450
 451         timeout ${timeout_test} \
 452                 ip netns exec ${listener_ns} \
 453                         ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
 454                                 $extra_args $local_addr < "$sin" > "$sout" &
 455         local spid=$!
 456
 457         wait_local_port_listen "${listener_ns}" "${port}"
 458
 459         local start
 460         start=$(date +%s%3N)
 461         timeout ${timeout_test} \
 462                 ip netns exec ${connector_ns} \
 463                         ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
 464                                 $extra_args $connect_addr < "$cin" > "$cout" &
 465         local cpid=$!
 466
 467         wait $cpid
 468         local retc=$?
 469         wait $spid
 470         local rets=$?
 471
 472         local stop
 473         stop=$(date +%s%3N)
 474
 475         if $capture; then
 476                 sleep 1
 477                 kill ${cappid_listener}
 478                 kill ${cappid_connector}
 479         fi
 480
 481         NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \
 482                 nstat | grep Tcp > /tmp/${listener_ns}.out
 483         if [ ${listener_ns} != ${connector_ns} ]; then
 484                 NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \
 485                         nstat | grep Tcp > /tmp/${connector_ns}.out
 486         fi
 487
 488         local duration
 489         duration=$((stop-start))
 490         printf "(duration %05sms) " "${duration}"
 491         if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
 492                 echo "[ FAIL ] client exit code $retc, server $rets" 1>&2
 493                 echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2
 494                 ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port"
 495                 cat /tmp/${listener_ns}.out
 496                 echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2
 497                 ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port"
 498                 [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out
 499
 500                 echo
 501                 cat "$capout"
 502                 return 1
 503         fi
 504
 505         check_transfer $sin $cout "file received by client"
 506         retc=$?
 507         check_transfer $cin $sout "file received by server"
 508         rets=$?
 509
 510         local stat_synrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX")
 511         local stat_ackrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX")
 512         local stat_cookietx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent")
 513         local stat_cookierx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv")
 514         local stat_ooo_now=$(get_mib_counter "${listener_ns}" "TcpExtTCPOFOQueue")
 515
 516         expect_synrx=$((stat_synrx_last_l))
 517         expect_ackrx=$((stat_ackrx_last_l))
 518
 519         cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies)
 520         cookies=${cookies##*=}
 521
 522         if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then
 523                 expect_synrx=$((stat_synrx_last_l+1))
 524                 expect_ackrx=$((stat_ackrx_last_l+1))
 525         fi
 526
 527         if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then
 528                 printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \
 529                         "${stat_synrx_now_l}" "${expect_synrx}" 1>&2
 530                 retc=1
 531         fi
 532         if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} -a ${stat_ooo_now} -eq 0 ]; then
 533                 if [ ${stat_ooo_now} -eq 0 ]; then
 534                         printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \
 535                                 "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2
 536                         rets=1
 537                 else
 538                         printf "[ Note ] fallback due to TCP OoO"
 539                 fi
 540         fi
 541
 542         if $checksum; then
 543                 local csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr")
 544                 local csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr")
 545
 546                 local csum_err_s_nr=$((csum_err_s - stat_csum_err_s))
 547                 if [ $csum_err_s_nr -gt 0 ]; then
 548                         printf "[ FAIL ]\nserver got $csum_err_s_nr data checksum error[s]"
 549                         rets=1
 550                 fi
 551
 552                 local csum_err_c_nr=$((csum_err_c - stat_csum_err_c))
 553                 if [ $csum_err_c_nr -gt 0 ]; then
 554                         printf "[ FAIL ]\nclient got $csum_err_c_nr data checksum error[s]"
 555                         retc=1
 556                 fi
 557         fi
 558
 559         if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then
 560                 printf "[ OK ]"
 561         fi
 562
 563         if [ $cookies -eq 2 ];then
 564                 if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then
 565                         printf " WARN: CookieSent: did not advance"
 566                 fi
 567                 if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then
 568                         printf " WARN: CookieRecv: did not advance"
 569                 fi
 570         else
 571                 if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then
 572                         printf " WARN: CookieSent: changed"
 573                 fi
 574                 if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then
 575                         printf " WARN: CookieRecv: changed"
 576                 fi
 577         fi
 578
 579         if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then
 580                 printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \
 581                         "${expect_synrx}" "${stat_synrx_now_l}"
 582         fi
 583         if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then
 584                 printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \
 585                         "${expect_ackrx}" "${stat_ackrx_now_l}"
 586         fi
 587
 588         echo
 589         cat "$capout"
 590         [ $retc -eq 0 ] && [ $rets -eq 0 ]
 591 }
 592
 593 make_file()
 594 {
 595         local name=$1
 596         local who=$2
 597         local SIZE=$filesize
 598         local ksize
 599         local rem
 600
 601         if [ $SIZE -eq 0 ]; then
 602                 local MAXSIZE=$((1024 * 1024 * 8))
 603                 local MINSIZE=$((1024 * 256))
 604
 605                 SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE))
 606         fi
 607
 608         ksize=$((SIZE / 1024))
 609         rem=$((SIZE - (ksize * 1024)))
 610
 611         dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null
 612         dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null
 613         echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name"
 614
 615         echo "Created $name (size $(du -b "$name")) containing data sent by $who"
 616 }
 617
 618 run_tests_lo()
 619 {
 620         local listener_ns="$1"
 621         local connector_ns="$2"
 622         local connect_addr="$3"
 623         local loopback="$4"
 624         local extra_args="$5"
 625         local lret=0
 626
 627         # skip if test programs are running inside same netns for subsequent runs.
 628         if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then
 629                 return 0
 630         fi
 631
 632         # skip if we don't want v6
 633         if ! $ipv6 && is_v6 "${connect_addr}"; then
 634                 return 0
 635         fi
 636
 637         local local_addr
 638         if is_v6 "${connect_addr}"; then
 639                 local_addr="::"
 640         else
 641                 local_addr="0.0.0.0"
 642         fi
 643
 644         do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \
 645                     ${connect_addr} ${local_addr} "${extra_args}"
 646         lret=$?
 647         if [ $lret -ne 0 ]; then
 648                 ret=$lret
 649                 return 1
 650         fi
 651
 652         if [ $do_tcp -eq 0 ]; then
 653                 # don't bother testing fallback tcp except for loopback case.
 654                 if [ ${listener_ns} != ${connector_ns} ]; then
 655                         return 0
 656                 fi
 657         fi
 658
 659         do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \
 660                     ${connect_addr} ${local_addr} "${extra_args}"
 661         lret=$?
 662         if [ $lret -ne 0 ]; then
 663                 ret=$lret
 664                 return 1
 665         fi
 666
 667         do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \
 668                     ${connect_addr} ${local_addr} "${extra_args}"
 669         lret=$?
 670         if [ $lret -ne 0 ]; then
 671                 ret=$lret
 672                 return 1
 673         fi
 674
 675         if [ $do_tcp -gt 1 ] ;then
 676                 do_transfer ${listener_ns} ${connector_ns} TCP TCP \
 677                             ${connect_addr} ${local_addr} "${extra_args}"
 678                 lret=$?
 679                 if [ $lret -ne 0 ]; then
 680                         ret=$lret
 681                         return 1
 682                 fi
 683         fi
 684
 685         return 0
 686 }
 687
 688 run_tests()
 689 {
 690         run_tests_lo $1 $2 $3 0
 691 }
 692
 693 run_tests_peekmode()
 694 {
 695         local peekmode="$1"
 696
 697         echo "INFO: with peek mode: ${peekmode}"
 698         run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}"
 699         run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}"
 700 }
 701
 702 display_time()
 703 {
 704         time_end=$(date +%s)
 705         time_run=$((time_end-time_start))
 706
 707         echo "Time: ${time_run} seconds"
 708 }
 709
 710 stop_if_error()
 711 {
 712         local msg="$1"
 713
 714         if [ ${ret} -ne 0 ]; then
 715                 echo "FAIL: ${msg}" 1>&2
 716                 display_time
 717                 exit ${ret}
 718         fi
 719 }
 720
 721 make_file "$cin" "client"
 722 make_file "$sin" "server"
 723
 724 check_mptcp_disabled
 725
 726 check_mptcp_ulp_setsockopt
 727
 728 stop_if_error "The kernel configuration is not valid for MPTCP"
 729
 730 echo "INFO: validating network environment with pings"
 731 for sender in "$ns1" "$ns2" "$ns3" "$ns4";do
 732         do_ping "$ns1" $sender 10.0.1.1
 733         do_ping "$ns1" $sender dead:beef:1::1
 734
 735         do_ping "$ns2" $sender 10.0.1.2
 736         do_ping "$ns2" $sender dead:beef:1::2
 737         do_ping "$ns2" $sender 10.0.2.1
 738         do_ping "$ns2" $sender dead:beef:2::1
 739
 740         do_ping "$ns3" $sender 10.0.2.2
 741         do_ping "$ns3" $sender dead:beef:2::2
 742         do_ping "$ns3" $sender 10.0.3.2
 743         do_ping "$ns3" $sender dead:beef:3::2
 744
 745         do_ping "$ns4" $sender 10.0.3.1
 746         do_ping "$ns4" $sender dead:beef:3::1
 747 done
 748
 749 stop_if_error "Could not even run ping tests"
 750
 751 [ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms
 752 echo -n "INFO: Using loss of $tc_loss "
 753 test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms "
 754
 755 reorder_delay=$(($tc_delay / 4))
 756
 757 if [ -z "${tc_reorder}" ]; then
 758         reorder1=$((RANDOM%10))
 759         reorder1=$((100 - reorder1))
 760         reorder2=$((RANDOM%100))
 761
 762         if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then
 763                 tc_reorder="reorder ${reorder1}% ${reorder2}%"
 764                 echo -n "$tc_reorder with delay ${reorder_delay}ms "
 765         fi
 766 elif [ "$tc_reorder" = "0" ];then
 767         tc_reorder=""
 768 elif [ "$reorder_delay" -gt 0 ];then
 769         # reordering requires some delay
 770         tc_reorder="reorder $tc_reorder"
 771         echo -n "$tc_reorder with delay ${reorder_delay}ms "
 772 fi
 773
 774 echo "on ns3eth4"
 775
 776 tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder
 777
 778 run_tests_lo "$ns1" "$ns1" 10.0.1.1 1
 779 stop_if_error "Could not even run loopback test"
 780
 781 run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1
 782 stop_if_error "Could not even run loopback v6 test"
 783
 784 for sender in $ns1 $ns2 $ns3 $ns4;do
 785         # ns1<->ns2 is not subject to reordering/tc delays. Use it to test
 786         # mptcp syncookie support.
 787         if [ $sender = $ns1 ]; then
 788                 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2
 789         else
 790                 ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1
 791         fi
 792
 793         run_tests "$ns1" $sender 10.0.1.1
 794         run_tests "$ns1" $sender dead:beef:1::1
 795
 796         run_tests "$ns2" $sender 10.0.1.2
 797         run_tests "$ns2" $sender dead:beef:1::2
 798         run_tests "$ns2" $sender 10.0.2.1
 799         run_tests "$ns2" $sender dead:beef:2::1
 800
 801         run_tests "$ns3" $sender 10.0.2.2
 802         run_tests "$ns3" $sender dead:beef:2::2
 803         run_tests "$ns3" $sender 10.0.3.2
 804         run_tests "$ns3" $sender dead:beef:3::2
 805
 806         run_tests "$ns4" $sender 10.0.3.1
 807         run_tests "$ns4" $sender dead:beef:3::1
 808
 809         stop_if_error "Tests with $sender as a sender have failed"
 810 done
 811
 812 run_tests_peekmode "saveWithPeek"
 813 run_tests_peekmode "saveAfterPeek"
 814 stop_if_error "Tests with peek mode have failed"
 815
 816 display_time
 817 exit $ret