| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| time_start=$(date +%s) |
| |
| optstring="b:d:e:l:r:h4cm:" |
| ret=0 |
| sin="" |
| sout="" |
| cin="" |
| cout="" |
| ksft_skip=4 |
| capture=false |
| timeout=30 |
| ipv6=true |
| ethtool_random_on=true |
| tc_delay="$((RANDOM%400))" |
| tc_loss=$((RANDOM%101)) |
| tc_reorder="" |
| testmode="" |
| sndbuf=0 |
| options_log=true |
| |
| 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: $0 [ -a ]" |
| echo -e "\t-d: tc/netem delay in milliseconds, e.g. \"-d 10\" (default random)" |
| echo -e "\t-l: tc/netem loss percentage, e.g. \"-l 0.02\" (default random)" |
| echo -e "\t-r: tc/netem reorder mode, e.g. \"-r 25% 50% gap 5\", use "-r 0" to disable reordering (default random)" |
| echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)" |
| echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)" |
| echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" |
| echo -e "\t-b: set sndbuf value (default: use kernel default)" |
| echo -e "\t-m: test mode (poll, sendfile; default: poll)" |
| } |
| |
| while getopts "$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 |
| ;; |
| "b") |
| if [ $OPTARG -ge 0 ];then |
| sndbuf="$OPTARG" |
| else |
| echo "-s requires numeric argument, got \"$OPTARG\"" 1>&2 |
| exit 1 |
| fi |
| ;; |
| "m") |
| testmode="$OPTARG" |
| ;; |
| "?") |
| 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 |
| |
| cleanup() |
| { |
| 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 |
| done |
| } |
| |
| 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) |
| 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 |
| |
| 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 "$out" |
| |
| return 1 |
| fi |
| |
| return 0 |
| } |
| |
| check_mptcp_disabled() |
| { |
| local disabled_ns |
| disabled_ns="ns_disabled-$sech-$(mktemp -u XXXXXX)" |
| 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 ]" |
| ret=1 |
| return 1 |
| fi |
| ip netns exec ${disabled_ns} sysctl -q net.mptcp.enabled=0 |
| |
| local err=0 |
| LANG=C ip netns exec ${disabled_ns} ./mptcp_connect -t $timeout -p 10000 -s MPTCP 127.0.0.1 < "$cin" 2>&1 | \ |
| grep -q "^socket: Protocol not available$" && err=1 |
| ip netns delete ${disabled_ns} |
| |
| if [ ${err} -eq 0 ]; then |
| echo -e "New MPTCP socket cannot be blocked via sysctl\t\t[ FAIL ]" |
| ret=1 |
| return 1 |
| fi |
| |
| echo -e "New MPTCP socket can be blocked via sysctl\t\t[ OK ]" |
| return 0 |
| } |
| |
| check_mptcp_ulp_setsockopt() |
| { |
| local t retval |
| t="ns_ulp-$sech-$(mktemp -u XXXXXX)" |
| |
| ip netns add ${t} || exit $ksft_skip |
| if ! ip netns exec ${t} ./mptcp_connect -u -p 10000 -s TCP 127.0.0.1 2>&1; then |
| printf "setsockopt(..., TCP_ULP, \"mptcp\", ...) allowed\t[ FAIL ]\n" |
| retval=1 |
| ret=$retval |
| else |
| printf "setsockopt(..., TCP_ULP, \"mptcp\", ...) blocked\t[ OK ]\n" |
| retval=0 |
| fi |
| ip netns del ${t} |
| return $retval |
| } |
| |
| # $1: IP address |
| is_v6() |
| { |
| [ -z "${1##*:*}" ] |
| } |
| |
| do_ping() |
| { |
| local listener_ns="$1" |
| local connector_ns="$2" |
| local connect_addr="$3" |
| local ping_args="-q -c 1" |
| |
| if is_v6 "${connect_addr}"; then |
| $ipv6 || return 0 |
| ping_args="${ping_args} -6" |
| fi |
| |
| ip netns exec ${connector_ns} ping ${ping_args} $connect_addr >/dev/null |
| if [ $? -ne 0 ] ; then |
| echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2 |
| ret=1 |
| |
| return 1 |
| fi |
| |
| return 0 |
| } |
| |
| # $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="$6" |
| local extra_args="" |
| |
| local port |
| port=$((10000+$TEST_COUNT)) |
| TEST_COUNT=$((TEST_COUNT+1)) |
| |
| if [ "$sndbuf" -gt 0 ]; then |
| extra_args="$extra_args -b $sndbuf" |
| fi |
| |
| if [ -n "$testmode" ]; then |
| extra_args="$extra_args -m $testmode" |
| fi |
| |
| if [ -n "$extra_args" ] && $options_log; then |
| options_log=false |
| echo "INFO: extra options: $extra_args" |
| fi |
| |
| :> "$cout" |
| :> "$sout" |
| :> "$capout" |
| |
| local addr_port |
| addr_port=$(printf "%s:%d" ${connect_addr} ${port}) |
| printf "%.3s %-5s -> %.3s (%-20s) %-5s\t" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto} |
| |
| if $capture; then |
| local capuser |
| if [ -z $SUDO_USER ] ; then |
| capuser="" |
| else |
| capuser="-Z $SUDO_USER" |
| fi |
| |
| local capfile="${listener_ns}-${connector_ns}-${cl_proto}-${srv_proto}-${connect_addr}.pcap" |
| |
| ip netns exec ${listener_ns} tcpdump -i any -s 65535 -B 32768 $capuser -w $capfile > "$capout" 2>&1 & |
| local cappid=$! |
| |
| sleep 1 |
| fi |
| |
| ip netns exec ${listener_ns} ./mptcp_connect -t $timeout -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) |
| ip netns exec ${connector_ns} ./mptcp_connect -t $timeout -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 $cappid |
| fi |
| |
| local duration |
| duration=$((stop-start)) |
| duration=$(printf "(duration %05sms)" $duration) |
| if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then |
| echo "$duration [ FAIL ] client exit code $retc, server $rets" 1>&2 |
| echo "\nnetns ${listener_ns} socket stat for $port:" 1>&2 |
| ip netns exec ${listener_ns} ss -nita 1>&2 -o "sport = :$port" |
| echo "\nnetns ${connector_ns} socket stat for $port:" 1>&2 |
| ip netns exec ${connector_ns} ss -nita 1>&2 -o "dport = :$port" |
| |
| cat "$capout" |
| return 1 |
| fi |
| |
| check_transfer $sin $cout "file received by client" |
| retc=$? |
| check_transfer $cin $sout "file received by server" |
| rets=$? |
| |
| if [ $retc -eq 0 ] && [ $rets -eq 0 ];then |
| echo "$duration [ OK ]" |
| cat "$capout" |
| return 0 |
| fi |
| |
| cat "$capout" |
| return 1 |
| } |
| |
| make_file() |
| { |
| local name=$1 |
| local who=$2 |
| |
| local SIZE TSIZE |
| SIZE=$((RANDOM % (1024 * 8))) |
| TSIZE=$((SIZE * 1024)) |
| |
| dd if=/dev/urandom of="$name" bs=1024 count=$SIZE 2> /dev/null |
| |
| SIZE=$((RANDOM % 1024)) |
| SIZE=$((SIZE + 128)) |
| TSIZE=$((TSIZE + SIZE)) |
| dd if=/dev/urandom conv=notrunc of="$name" bs=1 count=$SIZE 2> /dev/null |
| echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name" |
| |
| echo "Created $name (size $TSIZE) containing data sent by $who" |
| } |
| |
| run_tests_lo() |
| { |
| local listener_ns="$1" |
| local connector_ns="$2" |
| local connect_addr="$3" |
| local loopback="$4" |
| 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} ${local_addr} |
| lret=$? |
| if [ $lret -ne 0 ]; then |
| ret=$lret |
| return 1 |
| fi |
| |
| # don't bother testing fallback tcp except for loopback case. |
| if [ ${listener_ns} != ${connector_ns} ]; then |
| return 0 |
| fi |
| |
| do_transfer ${listener_ns} ${connector_ns} MPTCP TCP ${connect_addr} ${local_addr} |
| lret=$? |
| if [ $lret -ne 0 ]; then |
| ret=$lret |
| return 1 |
| fi |
| |
| do_transfer ${listener_ns} ${connector_ns} TCP MPTCP ${connect_addr} ${local_addr} |
| lret=$? |
| if [ $lret -ne 0 ]; then |
| ret=$lret |
| return 1 |
| fi |
| |
| return 0 |
| } |
| |
| run_tests() |
| { |
| run_tests_lo $1 $2 $3 0 |
| } |
| |
| make_file "$cin" "client" |
| make_file "$sin" "server" |
| |
| check_mptcp_disabled |
| |
| check_mptcp_ulp_setsockopt |
| |
| echo "INFO: validating network environment with pings" |
| for sender in "$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" $sender dead:beef:3::1 |
| done |
| |
| [ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss |
| echo -n "INFO: Using loss of $tc_loss " |
| test "$tc_delay" -gt 0 && echo -n "delay $tc_delay ms " |
| |
| if [ -z "${tc_reorder}" ]; then |
| reorder1=$((RANDOM%10)) |
| reorder1=$((100 - reorder1)) |
| reorder2=$((RANDOM%100)) |
| |
| if [ $tc_delay -gt 0 ] && [ $reorder1 -lt 100 ] && [ $reorder2 -gt 0 ]; then |
| tc_reorder="reorder ${reorder1}% ${reorder2}%" |
| echo -n "$tc_reorder " |
| fi |
| elif [ "$tc_reorder" = "0" ];then |
| tc_reorder="" |
| elif [ "$tc_delay" -gt 0 ];then |
| # reordering requires some delay |
| tc_reorder="reorder $tc_reorder" |
| echo -n "$tc_reorder " |
| fi |
| |
| echo "on ns3eth4" |
| |
| tc -net "$ns3" qdisc add dev ns3eth4 root netem delay ${tc_delay}ms $tc_reorder |
| |
| for sender in $ns1 $ns2 $ns3 $ns4;do |
| run_tests_lo "$ns1" "$sender" 10.0.1.1 1 |
| if [ $ret -ne 0 ] ;then |
| echo "FAIL: Could not even run loopback test" 1>&2 |
| exit $ret |
| fi |
| run_tests_lo "$ns1" $sender dead:beef:1::1 1 |
| if [ $ret -ne 0 ] ;then |
| echo "FAIL: Could not even run loopback v6 test" 2>&1 |
| exit $ret |
| fi |
| |
| run_tests "$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" $sender dead:beef:3::1 |
| done |
| |
| time_end=$(date +%s) |
| time_run=$((time_end-time_start)) |
| |
| echo "Time: ${time_run} seconds" |
| |
| exit $ret |
