| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| # Double quotes to prevent globbing and word splitting is recommended in new |
| # code but we accept it, especially because there were too many before having |
| # address all other issues detected by shellcheck. |
| #shellcheck disable=SC2086 |
| |
| . "$(dirname "${0}")/mptcp_lib.sh" |
| |
| ns1="" |
| ns2="" |
| ns3="" |
| capture=false |
| timeout_poll=30 |
| timeout_test=$((timeout_poll * 2 + 1)) |
| # a bit more space: because we have more to display |
| MPTCP_LIB_TEST_FORMAT="%02u %-60s" |
| ret=0 |
| bail=0 |
| slack=50 |
| large="" |
| small="" |
| sout="" |
| cout="" |
| capout="" |
| size=0 |
| |
| usage() { |
| echo "Usage: $0 [ -b ] [ -c ] [ -d ] [ -i]" |
| echo -e "\t-b: bail out after first error, otherwise runs al testcases" |
| echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)" |
| echo -e "\t-d: debug this script" |
| echo -e "\t-i: use 'ip mptcp' instead of 'pm_nl_ctl'" |
| } |
| |
| # This function is used in the cleanup trap |
| #shellcheck disable=SC2317 |
| cleanup() |
| { |
| rm -f "$cout" "$sout" |
| rm -f "$large" "$small" |
| rm -f "$capout" |
| |
| mptcp_lib_ns_exit "${ns1}" "${ns2}" "${ns3}" |
| } |
| |
| mptcp_lib_check_mptcp |
| mptcp_lib_check_tools ip tc |
| |
| # "$ns1" ns2 ns3 |
| # ns1eth1 ns2eth1 ns2eth3 ns3eth1 |
| # netem |
| # ns1eth2 ns2eth2 |
| # netem |
| |
| setup() |
| { |
| large=$(mktemp) |
| small=$(mktemp) |
| sout=$(mktemp) |
| cout=$(mktemp) |
| capout=$(mktemp) |
| size=$((2 * 2048 * 4096)) |
| |
| dd if=/dev/zero of=$small bs=4096 count=20 >/dev/null 2>&1 |
| dd if=/dev/zero of=$large bs=4096 count=$((size / 4096)) >/dev/null 2>&1 |
| |
| trap cleanup EXIT |
| |
| mptcp_lib_ns_init ns1 ns2 ns3 |
| |
| ip link add ns1eth1 netns "$ns1" type veth peer name ns2eth1 netns "$ns2" |
| ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth2 netns "$ns2" |
| ip link add ns2eth3 netns "$ns2" type veth peer name ns3eth1 netns "$ns3" |
| |
| ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth1 |
| ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth1 nodad |
| ip -net "$ns1" link set ns1eth1 up mtu 1500 |
| ip -net "$ns1" route add default via 10.0.1.2 |
| ip -net "$ns1" route add default via dead:beef:1::2 |
| |
| ip -net "$ns1" addr add 10.0.2.1/24 dev ns1eth2 |
| ip -net "$ns1" addr add dead:beef:2::1/64 dev ns1eth2 nodad |
| ip -net "$ns1" link set ns1eth2 up mtu 1500 |
| ip -net "$ns1" route add default via 10.0.2.2 metric 101 |
| ip -net "$ns1" route add default via dead:beef:2::2 metric 101 |
| |
| mptcp_lib_pm_nl_set_limits "${ns1}" 1 1 |
| mptcp_lib_pm_nl_add_endpoint "${ns1}" 10.0.2.1 dev ns1eth2 flags subflow |
| |
| ip -net "$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 mtu 1500 |
| |
| ip -net "$ns2" addr add 10.0.2.2/24 dev ns2eth2 |
| ip -net "$ns2" addr add dead:beef:2::2/64 dev ns2eth2 nodad |
| ip -net "$ns2" link set ns2eth2 up mtu 1500 |
| |
| ip -net "$ns2" addr add 10.0.3.2/24 dev ns2eth3 |
| ip -net "$ns2" addr add dead:beef:3::2/64 dev ns2eth3 nodad |
| ip -net "$ns2" link set ns2eth3 up mtu 1500 |
| 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 "$ns3" addr add 10.0.3.3/24 dev ns3eth1 |
| ip -net "$ns3" addr add dead:beef:3::3/64 dev ns3eth1 nodad |
| ip -net "$ns3" link set ns3eth1 up mtu 1500 |
| ip -net "$ns3" route add default via 10.0.3.2 |
| ip -net "$ns3" route add default via dead:beef:3::2 |
| |
| mptcp_lib_pm_nl_set_limits "${ns3}" 1 1 |
| |
| # debug build can slow down measurably the test program |
| # we use quite tight time limit on the run-time, to ensure |
| # maximum B/W usage. |
| # Use kmemleak/lockdep/kasan/prove_locking presence as a rough |
| # estimate for this being a debug kernel and increase the |
| # maximum run-time accordingly. Observed run times for CI builds |
| # running selftests, including kbuild, were used to determine the |
| # amount of time to add. |
| grep -q ' kmemleak_init$\| lockdep_init$\| kasan_init$\| prove_locking$' /proc/kallsyms && slack=$((slack+550)) |
| } |
| |
| do_transfer() |
| { |
| local cin=$1 |
| local sin=$2 |
| local max_time=$3 |
| local port |
| port=$((10000+MPTCP_LIB_TEST_COUNTER)) |
| |
| :> "$cout" |
| :> "$sout" |
| :> "$capout" |
| |
| if $capture; then |
| local capuser |
| local rndh="${ns1:4}" |
| if [ -z $SUDO_USER ] ; then |
| capuser="" |
| else |
| capuser="-Z $SUDO_USER" |
| fi |
| |
| local capfile="${rndh}-${port}" |
| local capopt="-i any -s 65535 -B 32768 ${capuser}" |
| |
| ip netns exec ${ns3} tcpdump ${capopt} -w "${capfile}-listener.pcap" >> "${capout}" 2>&1 & |
| local cappid_listener=$! |
| |
| ip netns exec ${ns1} tcpdump ${capopt} -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 & |
| local cappid_connector=$! |
| |
| sleep 1 |
| fi |
| |
| timeout ${timeout_test} \ |
| ip netns exec ${ns3} \ |
| ./mptcp_connect -jt ${timeout_poll} -l -p $port -T $max_time \ |
| 0.0.0.0 < "$sin" > "$sout" & |
| local spid=$! |
| |
| mptcp_lib_wait_local_port_listen "${ns3}" "${port}" |
| |
| timeout ${timeout_test} \ |
| ip netns exec ${ns1} \ |
| ./mptcp_connect -jt ${timeout_poll} -p $port -T $max_time \ |
| 10.0.3.3 < "$cin" > "$cout" & |
| local cpid=$! |
| |
| wait $cpid |
| local retc=$? |
| wait $spid |
| local rets=$? |
| |
| if $capture; then |
| sleep 1 |
| kill ${cappid_listener} |
| kill ${cappid_connector} |
| fi |
| |
| cmp $sin $cout > /dev/null 2>&1 |
| local cmps=$? |
| cmp $cin $sout > /dev/null 2>&1 |
| local cmpc=$? |
| |
| printf "%-16s" " max $max_time " |
| if [ $retc -eq 0 ] && [ $rets -eq 0 ] && \ |
| [ $cmpc -eq 0 ] && [ $cmps -eq 0 ]; then |
| mptcp_lib_pr_ok |
| cat "$capout" |
| return 0 |
| fi |
| |
| mptcp_lib_pr_fail |
| echo "client exit code $retc, server $rets" 1>&2 |
| echo -e "\nnetns ${ns3} socket stat for $port:" 1>&2 |
| ip netns exec ${ns3} ss -nita 1>&2 -o "sport = :$port" |
| echo -e "\nnetns ${ns1} socket stat for $port:" 1>&2 |
| ip netns exec ${ns1} ss -nita 1>&2 -o "dport = :$port" |
| ls -l $sin $cout |
| ls -l $cin $sout |
| |
| cat "$capout" |
| return 1 |
| } |
| |
| run_test() |
| { |
| local rate1=$1 |
| local rate2=$2 |
| local delay1=$3 |
| local delay2=$4 |
| local lret |
| local dev |
| shift 4 |
| local msg=$* |
| |
| [ $delay1 -gt 0 ] && delay1="delay ${delay1}ms" || delay1="" |
| [ $delay2 -gt 0 ] && delay2="delay ${delay2}ms" || delay2="" |
| |
| for dev in ns1eth1 ns1eth2; do |
| tc -n $ns1 qdisc del dev $dev root >/dev/null 2>&1 |
| done |
| for dev in ns2eth1 ns2eth2; do |
| tc -n $ns2 qdisc del dev $dev root >/dev/null 2>&1 |
| done |
| tc -n $ns1 qdisc add dev ns1eth1 root netem rate ${rate1}mbit $delay1 |
| tc -n $ns1 qdisc add dev ns1eth2 root netem rate ${rate2}mbit $delay2 |
| tc -n $ns2 qdisc add dev ns2eth1 root netem rate ${rate1}mbit $delay1 |
| tc -n $ns2 qdisc add dev ns2eth2 root netem rate ${rate2}mbit $delay2 |
| |
| # time is measured in ms, account for transfer size, aggregated link speed |
| # and header overhead (10%) |
| # ms byte -> bit 10% mbit -> kbit -> bit 10% |
| local time=$((1000 * size * 8 * 10 / ((rate1 + rate2) * 1000 * 1000 * 9) )) |
| |
| # mptcp_connect will do some sleeps to allow the mp_join handshake |
| # completion (see mptcp_connect): 200ms on each side, add some slack |
| time=$((time + 400 + slack)) |
| |
| mptcp_lib_print_title "$msg" |
| do_transfer $small $large $time |
| lret=$? |
| mptcp_lib_result_code "${lret}" "${msg}" |
| if [ $lret -ne 0 ] && ! mptcp_lib_subtest_is_flaky; then |
| ret=$lret |
| [ $bail -eq 0 ] || exit $ret |
| fi |
| |
| msg+=" - reverse direction" |
| mptcp_lib_print_title "${msg}" |
| do_transfer $large $small $time |
| lret=$? |
| mptcp_lib_result_code "${lret}" "${msg}" |
| if [ $lret -ne 0 ] && ! mptcp_lib_subtest_is_flaky; then |
| ret=$lret |
| [ $bail -eq 0 ] || exit $ret |
| fi |
| } |
| |
| while getopts "bcdhi" option;do |
| case "$option" in |
| "h") |
| usage $0 |
| exit ${KSFT_PASS} |
| ;; |
| "b") |
| bail=1 |
| ;; |
| "c") |
| capture=true |
| ;; |
| "d") |
| set -x |
| ;; |
| "i") |
| mptcp_lib_set_ip_mptcp |
| ;; |
| "?") |
| usage $0 |
| exit ${KSFT_FAIL} |
| ;; |
| esac |
| done |
| |
| setup |
| mptcp_lib_subtests_last_ts_reset |
| run_test 10 10 0 0 "balanced bwidth" |
| run_test 10 10 1 25 "balanced bwidth with unbalanced delay" |
| |
| # we still need some additional infrastructure to pass the following test-cases |
| MPTCP_LIB_SUBTEST_FLAKY=1 run_test 10 3 0 0 "unbalanced bwidth" |
| run_test 10 3 1 25 "unbalanced bwidth with unbalanced delay" |
| run_test 10 3 25 1 "unbalanced bwidth with opposed, unbalanced delay" |
| |
| mptcp_lib_result_print_all_tap |
| exit $ret |
