diff options
Diffstat (limited to 'tools/testing/selftests/net/mptcp/mptcp_connect.sh')
-rwxr-xr-x | tools/testing/selftests/net/mptcp/mptcp_connect.sh | 1002 |
1 files changed, 1002 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh new file mode 100755 index 0000000000..b1fc8afd07 --- /dev/null +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh @@ -0,0 +1,1002 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +. "$(dirname "${0}")/mptcp_lib.sh" + +time_start=$(date +%s) + +optstring="S:R:d:e:l:r:h4cm:f:tC" +ret=0 +final_ret=0 +sin="" +sout="" +cin_disconnect="" +cin="" +cout="" +ksft_skip=4 +capture=false +timeout_poll=30 +timeout_test=$((timeout_poll * 2 + 1)) +ipv6=true +ethtool_random_on=true +tc_delay="$((RANDOM%50))" +tc_loss=$((RANDOM%101)) +testmode="" +sndbuf=0 +rcvbuf=0 +options_log=true +do_tcp=0 +checksum=false +filesize=0 +connect_per_transfer=1 + +if [ $tc_loss -eq 100 ];then + tc_loss=1% +elif [ $tc_loss -ge 10 ]; then + tc_loss=0.$tc_loss% +elif [ $tc_loss -ge 1 ]; then + tc_loss=0.0$tc_loss% +else + tc_loss="" +fi + +usage() { + echo "Usage: $0 [ -a ]" + echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" + echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" + echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" + echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" + echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" + echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" + echo -e "\t-f: size of file to transfer in bytes (default random)" + echo -e "\t-S: set sndbuf value (default: use kernel default)" + echo -e "\t-R: set rcvbuf value (default: use kernel default)" + echo -e "\t-m: test mode (poll, sendfile; default: poll)" + echo -e "\t-t: also run tests with TCP (use twice to non-fallback tcp)" + echo -e "\t-C: enable the MPTCP data checksum" +} + +while getopts "$optstring" option;do + case "$option" in + "h") + usage $0 + exit 0 + ;; + "d") + if [ $OPTARG -ge 0 ];then + tc_delay="$OPTARG" + else + echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2 + exit 1 + fi + ;; + "e") + ethtool_args="$ethtool_args $OPTARG off" + ethtool_random_on=false + ;; + "l") + tc_loss="$OPTARG" + ;; + "r") + tc_reorder="$OPTARG" + ;; + "4") + ipv6=false + ;; + "c") + capture=true + ;; + "S") + if [ $OPTARG -ge 0 ];then + sndbuf="$OPTARG" + else + echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2 + exit 1 + fi + ;; + "R") + if [ $OPTARG -ge 0 ];then + rcvbuf="$OPTARG" + else + echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2 + exit 1 + fi + ;; + "m") + testmode="$OPTARG" + ;; + "f") + filesize="$OPTARG" + ;; + "t") + do_tcp=$((do_tcp+1)) + ;; + "C") + checksum=true + ;; + "?") + usage $0 + exit 1 + ;; + esac +done + +sec=$(date +%s) +rndh=$(printf %x $sec)-$(mktemp -u XXXXXX) +ns1="ns1-$rndh" +ns2="ns2-$rndh" +ns3="ns3-$rndh" +ns4="ns4-$rndh" + +TEST_COUNT=0 +TEST_GROUP="" + +cleanup() +{ + rm -f "$cin_disconnect" "$cout_disconnect" + rm -f "$cin" "$cout" + rm -f "$sin" "$sout" + rm -f "$capout" + + local netns + for netns in "$ns1" "$ns2" "$ns3" "$ns4";do + ip netns del $netns + rm -f /tmp/$netns.{nstat,out} + done +} + +mptcp_lib_check_mptcp +mptcp_lib_check_kallsyms + +ip -Version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi + +sin=$(mktemp) +sout=$(mktemp) +cin=$(mktemp) +cout=$(mktemp) +capout=$(mktemp) +cin_disconnect="$cin".disconnect +cout_disconnect="$cout".disconnect +trap cleanup EXIT + +for i in "$ns1" "$ns2" "$ns3" "$ns4";do + ip netns add $i || exit $ksft_skip + ip -net $i link set lo up +done + +# "$ns1" ns2 ns3 ns4 +# ns1eth2 ns2eth1 ns2eth3 ns3eth2 ns3eth4 ns4eth3 +# - drop 1% -> reorder 25% +# <- TSO off - + +ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" +ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth2 netns "$ns3" +ip link add ns3eth4 netns "$ns3" type veth peer name ns4eth3 netns "$ns4" + +ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2 +ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad + +ip -net "$ns1" link set ns1eth2 up +ip -net "$ns1" route add default via 10.0.1.2 +ip -net "$ns1" route add default via dead:beef:1::2 + +ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1 +ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad +ip -net "$ns2" link set ns2eth1 up + +ip -net "$ns2" addr add 10.0.2.1/24 dev ns2eth3 +ip -net "$ns2" addr add dead:beef:2::1/64 dev ns2eth3 nodad +ip -net "$ns2" link set ns2eth3 up +ip -net "$ns2" route add default via 10.0.2.2 +ip -net "$ns2" route add default via dead:beef:2::2 +ip netns exec "$ns2" sysctl -q net.ipv4.ip_forward=1 +ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.forwarding=1 + +ip -net "$ns3" addr add 10.0.2.2/24 dev ns3eth2 +ip -net "$ns3" addr add dead:beef:2::2/64 dev ns3eth2 nodad +ip -net "$ns3" link set ns3eth2 up + +ip -net "$ns3" addr add 10.0.3.2/24 dev ns3eth4 +ip -net "$ns3" addr add dead:beef:3::2/64 dev ns3eth4 nodad +ip -net "$ns3" link set ns3eth4 up +ip -net "$ns3" route add default via 10.0.2.1 +ip -net "$ns3" route add default via dead:beef:2::1 +ip netns exec "$ns3" sysctl -q net.ipv4.ip_forward=1 +ip netns exec "$ns3" sysctl -q net.ipv6.conf.all.forwarding=1 + +ip -net "$ns4" addr add 10.0.3.1/24 dev ns4eth3 +ip -net "$ns4" addr add dead:beef:3::1/64 dev ns4eth3 nodad +ip -net "$ns4" link set ns4eth3 up +ip -net "$ns4" route add default via 10.0.3.2 +ip -net "$ns4" route add default via dead:beef:3::2 + +if $checksum; then + for i in "$ns1" "$ns2" "$ns3" "$ns4";do + ip netns exec $i sysctl -q net.mptcp.checksum_enabled=1 + done +fi + +set_ethtool_flags() { + local ns="$1" + local dev="$2" + local flags="$3" + + ip netns exec $ns ethtool -K $dev $flags 2>/dev/null + [ $? -eq 0 ] && echo "INFO: set $ns dev $dev: ethtool -K $flags" +} + +set_random_ethtool_flags() { + local flags="" + local r=$RANDOM + + local pick1=$((r & 1)) + local pick2=$((r & 2)) + local pick3=$((r & 4)) + + [ $pick1 -ne 0 ] && flags="tso off" + [ $pick2 -ne 0 ] && flags="$flags gso off" + [ $pick3 -ne 0 ] && flags="$flags gro off" + + [ -z "$flags" ] && return + + set_ethtool_flags "$1" "$2" "$flags" +} + +if $ethtool_random_on;then + set_random_ethtool_flags "$ns3" ns3eth2 + set_random_ethtool_flags "$ns4" ns4eth3 +else + set_ethtool_flags "$ns3" ns3eth2 "$ethtool_args" + set_ethtool_flags "$ns4" ns4eth3 "$ethtool_args" +fi + +print_file_err() +{ + ls -l "$1" 1>&2 + echo "Trailing bytes are: " + tail -c 27 "$1" +} + +check_transfer() +{ + local in=$1 + local out=$2 + local what=$3 + + cmp "$in" "$out" > /dev/null 2>&1 + if [ $? -ne 0 ] ;then + echo "[ FAIL ] $what does not match (in, out):" + print_file_err "$in" + print_file_err "$out" + + return 1 + fi + + return 0 +} + +check_mptcp_disabled() +{ + local disabled_ns="ns_disabled-$rndh" + ip netns add ${disabled_ns} || exit $ksft_skip + + # net.mptcp.enabled should be enabled by default + if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then + echo -e "net.mptcp.enabled sysctl is not 1 by default\t\t[ FAIL ]" + mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default" + ret=1 + return 1 + fi + ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 + + local err=0 + LC_ALL=C ip netns exec ${disabled_ns} ./mptcp_connect -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ + grep -q "^socket: Protocol not available$" && err=1 + ip netns delete ${disabled_ns} + + if [ ${err} -eq 0 ]; then + echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" + mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl" + ret=1 + return 1 + fi + + echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" + mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl" + return 0 +} + +# $1: IP address +is_v6() +{ + [ -z "${1##*:*}" ] +} + +do_ping() +{ + local listener_ns="$1" + local connector_ns="$2" + local connect_addr="$3" + local ping_args="-q -c 1" + local rc=0 + + if is_v6 "${connect_addr}"; then + $ipv6 || return 0 + ping_args="${ping_args} -6" + fi + + ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null || rc=1 + + if [ $rc -ne 0 ] ; then + echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 + ret=1 + + return 1 + fi + + return 0 +} + +# $1: ns, $2: MIB counter +get_mib_counter() +{ + local listener_ns="${1}" + local mib="${2}" + + # strip the header + ip netns exec "${listener_ns}" \ + nstat -z -a "${mib}" | \ + tail -n+2 | \ + while read a count c rest; do + echo $count + done +} + +# $1: ns, $2: port +wait_local_port_listen() +{ + local listener_ns="${1}" + local port="${2}" + + local port_hex i + + port_hex="$(printf "%04X" "${port}")" + for i in $(seq 10); do + ip netns exec "${listener_ns}" cat /proc/net/tcp* | \ + awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && + break + sleep 0.1 + done +} + +do_transfer() +{ + local listener_ns="$1" + local connector_ns="$2" + local cl_proto="$3" + local srv_proto="$4" + local connect_addr="$5" + local local_addr="$6" + local extra_args="$7" + + local port + port=$((10000+$TEST_COUNT)) + TEST_COUNT=$((TEST_COUNT+1)) + + if [ "$rcvbuf" -gt 0 ]; then + extra_args="$extra_args -R $rcvbuf" + fi + + if [ "$sndbuf" -gt 0 ]; then + extra_args="$extra_args -S $sndbuf" + fi + + if [ -n "$testmode" ]; then + extra_args="$extra_args -m $testmode" + fi + + if [ -n "$extra_args" ] && $options_log; then + echo "INFO: extra options: $extra_args" + fi + options_log=false + + :> "$cout" + :> "$sout" + :> "$capout" + + local addr_port + addr_port=$(printf "%s:%d" ${connect_addr} ${port}) + local result_msg + result_msg="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})" + printf "%s\t" "${result_msg}" + + if $capture; then + local capuser + if [ -z $SUDO_USER ] ; then + capuser="" + else + capuser="-Z $SUDO_USER" + fi + + local capfile="${rndh}-${connector_ns:0:3}-${listener_ns:0:3}-${cl_proto}-${srv_proto}-${connect_addr}-${port}" + local capopt="-i any -s 65535 -B 32768 ${capuser}" + + ip netns exec ${listener_ns} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & + local cappid_listener=$! + + ip netns exec ${connector_ns} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & + local cappid_connector=$! + + sleep 1 + fi + + NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ + nstat -n + if [ ${listener_ns} != ${connector_ns} ]; then + NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ + nstat -n + fi + + local stat_synrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") + local stat_ackrx_last_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") + local stat_cookietx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") + local stat_cookierx_last=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") + local stat_csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") + local stat_csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") + + timeout ${timeout_test} \ + ip netns exec ${listener_ns} \ + ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \ + $extra_args $local_addr < "$sin" > "$sout" & + local spid=$! + + wait_local_port_listen "${listener_ns}" "${port}" + + local start + start=$(date +%s%3N) + timeout ${timeout_test} \ + ip netns exec ${connector_ns} \ + ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \ + $extra_args $connect_addr < "$cin" > "$cout" & + local cpid=$! + + wait $cpid + local retc=$? + wait $spid + local rets=$? + + local stop + stop=$(date +%s%3N) + + if $capture; then + sleep 1 + kill ${cappid_listener} + kill ${cappid_connector} + fi + + NSTAT_HISTORY=/tmp/${listener_ns}.nstat ip netns exec ${listener_ns} \ + nstat | grep Tcp > /tmp/${listener_ns}.out + if [ ${listener_ns} != ${connector_ns} ]; then + NSTAT_HISTORY=/tmp/${connector_ns}.nstat ip netns exec ${connector_ns} \ + nstat | grep Tcp > /tmp/${connector_ns}.out + fi + + local duration + duration=$((stop-start)) + result_msg+=" # time=${duration}ms" + printf "(duration %05sms) " "${duration}" + if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then + echo "[ FAIL ] client exit code $retc, server $rets" 1>&2 + echo -e "\nnetns ${listener_ns} socket stat for ${port}:" 1>&2 + ip netns exec ${listener_ns} ss -Menita 1>&2 -o "sport = :$port" + cat /tmp/${listener_ns}.out + echo -e "\nnetns ${connector_ns} socket stat for ${port}:" 1>&2 + ip netns exec ${connector_ns} ss -Menita 1>&2 -o "dport = :$port" + [ ${listener_ns} != ${connector_ns} ] && cat /tmp/${connector_ns}.out + + echo + cat "$capout" + mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" + return 1 + fi + + check_transfer $sin $cout "file received by client" + retc=$? + check_transfer $cin $sout "file received by server" + rets=$? + + local stat_synrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX") + local stat_ackrx_now_l=$(get_mib_counter "${listener_ns}" "MPTcpExtMPCapableACKRX") + local stat_cookietx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesSent") + local stat_cookierx_now=$(get_mib_counter "${listener_ns}" "TcpExtSyncookiesRecv") + local stat_ooo_now=$(get_mib_counter "${listener_ns}" "TcpExtTCPOFOQueue") + + expect_synrx=$((stat_synrx_last_l)) + expect_ackrx=$((stat_ackrx_last_l)) + + cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies) + cookies=${cookies##*=} + + if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then + expect_synrx=$((stat_synrx_last_l+$connect_per_transfer)) + expect_ackrx=$((stat_ackrx_last_l+$connect_per_transfer)) + fi + + if [ ${stat_synrx_now_l} -lt ${expect_synrx} ]; then + printf "[ FAIL ] lower MPC SYN rx (%d) than expected (%d)\n" \ + "${stat_synrx_now_l}" "${expect_synrx}" 1>&2 + retc=1 + fi + if [ ${stat_ackrx_now_l} -lt ${expect_ackrx} -a ${stat_ooo_now} -eq 0 ]; then + if [ ${stat_ooo_now} -eq 0 ]; then + printf "[ FAIL ] lower MPC ACK rx (%d) than expected (%d)\n" \ + "${stat_ackrx_now_l}" "${expect_ackrx}" 1>&2 + rets=1 + else + printf "[ Note ] fallback due to TCP OoO" + fi + fi + + if $checksum; then + local csum_err_s=$(get_mib_counter "${listener_ns}" "MPTcpExtDataCsumErr") + local csum_err_c=$(get_mib_counter "${connector_ns}" "MPTcpExtDataCsumErr") + + local csum_err_s_nr=$((csum_err_s - stat_csum_err_s)) + if [ $csum_err_s_nr -gt 0 ]; then + printf "[ FAIL ]\nserver got $csum_err_s_nr data checksum error[s]" + rets=1 + fi + + local csum_err_c_nr=$((csum_err_c - stat_csum_err_c)) + if [ $csum_err_c_nr -gt 0 ]; then + printf "[ FAIL ]\nclient got $csum_err_c_nr data checksum error[s]" + retc=1 + fi + fi + + if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then + printf "[ OK ]" + mptcp_lib_result_pass "${TEST_GROUP}: ${result_msg}" + else + mptcp_lib_result_fail "${TEST_GROUP}: ${result_msg}" + fi + + if [ $cookies -eq 2 ];then + if [ $stat_cookietx_last -ge $stat_cookietx_now ] ;then + printf " WARN: CookieSent: did not advance" + fi + if [ $stat_cookierx_last -ge $stat_cookierx_now ] ;then + printf " WARN: CookieRecv: did not advance" + fi + else + if [ $stat_cookietx_last -ne $stat_cookietx_now ] ;then + printf " WARN: CookieSent: changed" + fi + if [ $stat_cookierx_last -ne $stat_cookierx_now ] ;then + printf " WARN: CookieRecv: changed" + fi + fi + + if [ ${stat_synrx_now_l} -gt ${expect_synrx} ]; then + printf " WARN: SYNRX: expect %d, got %d (probably retransmissions)" \ + "${expect_synrx}" "${stat_synrx_now_l}" + fi + if [ ${stat_ackrx_now_l} -gt ${expect_ackrx} ]; then + printf " WARN: ACKRX: expect %d, got %d (probably retransmissions)" \ + "${expect_ackrx}" "${stat_ackrx_now_l}" + fi + + echo + cat "$capout" + [ $retc -eq 0 ] && [ $rets -eq 0 ] +} + +make_file() +{ + local name=$1 + local who=$2 + local SIZE=$filesize + local ksize + local rem + + if [ $SIZE -eq 0 ]; then + local MAXSIZE=$((1024 * 1024 * 8)) + local MINSIZE=$((1024 * 256)) + + SIZE=$(((RANDOM * RANDOM + MINSIZE) % MAXSIZE)) + fi + + ksize=$((SIZE / 1024)) + rem=$((SIZE - (ksize * 1024))) + + dd if=/dev/urandom of="$name" bs=1024 count=$ksize 2> /dev/null + dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$rem 2> /dev/null + echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" + + echo "Created $name (size $(du -b "$name")) containing data sent by $who" +} + +run_tests_lo() +{ + local listener_ns="$1" + local connector_ns="$2" + local connect_addr="$3" + local loopback="$4" + local extra_args="$5" + local lret=0 + + # skip if test programs are running inside same netns for subsequent runs. + if [ $loopback -eq 0 ] && [ ${listener_ns} = ${connector_ns} ]; then + return 0 + fi + + # skip if we don't want v6 + if ! $ipv6 && is_v6 "${connect_addr}"; then + return 0 + fi + + local local_addr + if is_v6 "${connect_addr}"; then + local_addr="::" + else + local_addr="0.0.0.0" + fi + + do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ + ${connect_addr} ${local_addr} "${extra_args}" + lret=$? + if [ $lret -ne 0 ]; then + ret=$lret + return 1 + fi + + if [ $do_tcp -eq 0 ]; then + # don't bother testing fallback tcp except for loopback case. + if [ ${listener_ns} != ${connector_ns} ]; then + return 0 + fi + fi + + do_transfer ${listener_ns} ${connector_ns} MPTCP TCP \ + ${connect_addr} ${local_addr} "${extra_args}" + lret=$? + if [ $lret -ne 0 ]; then + ret=$lret + return 1 + fi + + do_transfer ${listener_ns} ${connector_ns} TCP MPTCP \ + ${connect_addr} ${local_addr} "${extra_args}" + lret=$? + if [ $lret -ne 0 ]; then + ret=$lret + return 1 + fi + + if [ $do_tcp -gt 1 ] ;then + do_transfer ${listener_ns} ${connector_ns} TCP TCP \ + ${connect_addr} ${local_addr} "${extra_args}" + lret=$? + if [ $lret -ne 0 ]; then + ret=$lret + return 1 + fi + fi + + return 0 +} + +run_tests() +{ + run_tests_lo $1 $2 $3 0 +} + +run_test_transparent() +{ + local connect_addr="$1" + local msg="$2" + + local connector_ns="$ns1" + local listener_ns="$ns2" + local lret=0 + local r6flag="" + + TEST_GROUP="${msg}" + + # skip if we don't want v6 + if ! $ipv6 && is_v6 "${connect_addr}"; then + return 0 + fi + + # IP(V6)_TRANSPARENT has been added after TOS support which came with + # the required infrastructure in MPTCP sockopt code. To support TOS, the + # following function has been exported (T). Not great but better than + # checking for a specific kernel version. + if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then + echo "INFO: ${msg} not supported by the kernel: SKIP" + mptcp_lib_result_skip "${TEST_GROUP}" + return + fi + +ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" +flush ruleset +table inet mangle { + chain divert { + type filter hook prerouting priority -150; + + meta l4proto tcp socket transparent 1 meta mark set 1 accept + tcp dport 20000 tproxy to :20000 meta mark set 1 accept + } +} +EOF + if [ $? -ne 0 ]; then + echo "SKIP: $msg, could not load nft ruleset" + mptcp_lib_fail_if_expected_feature "nft rules" + mptcp_lib_result_skip "${TEST_GROUP}" + return + fi + + local local_addr + if is_v6 "${connect_addr}"; then + local_addr="::" + r6flag="-6" + else + local_addr="0.0.0.0" + fi + + ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100 + if [ $? -ne 0 ]; then + ip netns exec "$listener_ns" nft flush ruleset + echo "SKIP: $msg, ip $r6flag rule failed" + mptcp_lib_fail_if_expected_feature "ip rule" + mptcp_lib_result_skip "${TEST_GROUP}" + return + fi + + ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100 + if [ $? -ne 0 ]; then + ip netns exec "$listener_ns" nft flush ruleset + ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 + echo "SKIP: $msg, ip route add local $local_addr failed" + mptcp_lib_fail_if_expected_feature "ip route" + mptcp_lib_result_skip "${TEST_GROUP}" + return + fi + + echo "INFO: test $msg" + + TEST_COUNT=10000 + local extra_args="-o TRANSPARENT" + do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP \ + ${connect_addr} ${local_addr} "${extra_args}" + lret=$? + + ip netns exec "$listener_ns" nft flush ruleset + ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100 + ip -net "$listener_ns" route del local $local_addr/0 dev lo table 100 + + if [ $lret -ne 0 ]; then + echo "FAIL: $msg, mptcp connection error" 1>&2 + ret=$lret + return 1 + fi + + echo "PASS: $msg" + return 0 +} + +run_tests_peekmode() +{ + local peekmode="$1" + + TEST_GROUP="peek mode: ${peekmode}" + echo "INFO: with peek mode: ${peekmode}" + run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-P ${peekmode}" + run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-P ${peekmode}" +} + +run_tests_mptfo() +{ + TEST_GROUP="MPTFO" + + if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then + echo "INFO: TFO not supported by the kernel: SKIP" + mptcp_lib_result_skip "${TEST_GROUP}" + return + fi + + echo "INFO: with MPTFO start" + ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2 + ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1 + + run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" + run_tests_lo "$ns1" "$ns2" 10.0.1.1 0 "-o MPTFO" + + run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" + run_tests_lo "$ns1" "$ns2" dead:beef:1::1 0 "-o MPTFO" + + ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=0 + ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=0 + echo "INFO: with MPTFO end" +} + +run_tests_disconnect() +{ + local old_cin=$cin + local old_sin=$sin + + TEST_GROUP="full disconnect" + + if ! mptcp_lib_kallsyms_has "mptcp_pm_data_reset$"; then + echo "INFO: Full disconnect not supported: SKIP" + mptcp_lib_result_skip "${TEST_GROUP}" + return + fi + + cat $cin $cin $cin > "$cin".disconnect + + # force do_transfer to cope with the multiple transmissions + sin="$cin.disconnect" + cin="$cin.disconnect" + cin_disconnect="$old_cin" + connect_per_transfer=3 + + echo "INFO: disconnect" + run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 "-I 3 -i $old_cin" + run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin" + + # restore previous status + sin=$old_sin + cin=$old_cin + cin_disconnect="$cin".disconnect + connect_per_transfer=1 +} + +display_time() +{ + time_end=$(date +%s) + time_run=$((time_end-time_start)) + + echo "Time: ${time_run} seconds" +} + +log_if_error() +{ + local msg="$1" + + if [ ${ret} -ne 0 ]; then + echo "FAIL: ${msg}" 1>&2 + + final_ret=${ret} + ret=0 + + return ${final_ret} + fi +} + +stop_if_error() +{ + if ! log_if_error "${@}"; then + display_time + mptcp_lib_result_print_all_tap + exit ${final_ret} + fi +} + +make_file "$cin" "client" +make_file "$sin" "server" + +check_mptcp_disabled + +stop_if_error "The kernel configuration is not valid for MPTCP" + +echo "INFO: validating network environment with pings" +for sender in "$ns1" "$ns2" "$ns3" "$ns4";do + do_ping "$ns1" $sender 10.0.1.1 + do_ping "$ns1" $sender dead:beef:1::1 + + do_ping "$ns2" $sender 10.0.1.2 + do_ping "$ns2" $sender dead:beef:1::2 + do_ping "$ns2" $sender 10.0.2.1 + do_ping "$ns2" $sender dead:beef:2::1 + + do_ping "$ns3" $sender 10.0.2.2 + do_ping "$ns3" $sender dead:beef:2::2 + do_ping "$ns3" $sender 10.0.3.2 + do_ping "$ns3" $sender dead:beef:3::2 + + do_ping "$ns4" $sender 10.0.3.1 + do_ping "$ns4" $sender dead:beef:3::1 +done + +mptcp_lib_result_code "${ret}" "ping tests" + +stop_if_error "Could not even run ping tests" + +[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms +echo -n "INFO: Using loss of $tc_loss " +test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " + +reorder_delay=$(($tc_delay / 4)) + +if [ -z "${tc_reorder}" ]; then + reorder1=$((RANDOM%10)) + reorder1=$((100 - reorder1)) + reorder2=$((RANDOM%100)) + + if [ $reorder_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then + tc_reorder="reorder ${reorder1}% ${reorder2}%" + echo -n "$tc_reorder with delay ${reorder_delay}ms " + fi +elif [ "$tc_reorder" = "0" ];then + tc_reorder="" +elif [ "$reorder_delay" -gt 0 ];then + # reordering requires some delay + tc_reorder="reorder $tc_reorder" + echo -n "$tc_reorder with delay ${reorder_delay}ms " +fi + +echo "on ns3eth4" + +tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${reorder_delay}ms $tc_reorder + +TEST_GROUP="loopback v4" +run_tests_lo "$ns1" "$ns1" 10.0.1.1 1 +stop_if_error "Could not even run loopback test" + +TEST_GROUP="loopback v6" +run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 +stop_if_error "Could not even run loopback v6 test" + +TEST_GROUP="multihosts" +for sender in $ns1 $ns2 $ns3 $ns4;do + # ns1<->ns2 is not subject to reordering/tc delays. Use it to test + # mptcp syncookie support. + if [ $sender = $ns1 ]; then + ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=2 + else + ip netns exec "$ns2" sysctl -q net.ipv4.tcp_syncookies=1 + fi + + run_tests "$ns1" $sender 10.0.1.1 + run_tests "$ns1" $sender dead:beef:1::1 + + run_tests "$ns2" $sender 10.0.1.2 + run_tests "$ns2" $sender dead:beef:1::2 + run_tests "$ns2" $sender 10.0.2.1 + run_tests "$ns2" $sender dead:beef:2::1 + + run_tests "$ns3" $sender 10.0.2.2 + run_tests "$ns3" $sender dead:beef:2::2 + run_tests "$ns3" $sender 10.0.3.2 + run_tests "$ns3" $sender dead:beef:3::2 + + run_tests "$ns4" $sender 10.0.3.1 + run_tests "$ns4" $sender dead:beef:3::1 + + log_if_error "Tests with $sender as a sender have failed" +done + +run_tests_peekmode "saveWithPeek" +run_tests_peekmode "saveAfterPeek" +log_if_error "Tests with peek mode have failed" + +# MPTFO (MultiPath TCP Fatopen tests) +run_tests_mptfo +log_if_error "Tests with MPTFO have failed" + +# connect to ns4 ip address, ns2 should intercept/proxy +run_test_transparent 10.0.3.1 "tproxy ipv4" +run_test_transparent dead:beef:3::1 "tproxy ipv6" +log_if_error "Tests with tproxy have failed" + +run_tests_disconnect +log_if_error "Tests of the full disconnection have failed" + +display_time +mptcp_lib_result_print_all_tap +exit ${final_ret} |