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-rwxr-xr-xtools/testing/selftests/net/mptcp/mptcp_connect.sh964
1 files changed, 964 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 000000000000..a6447f7a31fe
--- /dev/null
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -0,0 +1,964 @@
+#!/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"
+
+time_start=$(date +%s)
+
+optstring="S:R:d:e:l:r:h4cm:f:tC"
+ret=0
+final_ret=0
+sin=""
+sout=""
+cin_disconnect=""
+cin=""
+cout=""
+capture=false
+timeout_poll=30
+timeout_test=$((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
+port=$((10000 - 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 ${KSFT_PASS}
+ ;;
+ "d")
+ if [ $OPTARG -ge 0 ];then
+ tc_delay="$OPTARG"
+ else
+ echo "-d requires numeric argument, got \"$OPTARG\"" 1>&2
+ exit ${KSFT_FAIL}
+ fi
+ ;;
+ "e")
+ ethtool_args="$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 ${KSFT_FAIL}
+ fi
+ ;;
+ "R")
+ if [ $OPTARG -ge 0 ];then
+ rcvbuf="$OPTARG"
+ else
+ echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2
+ exit ${KSFT_FAIL}
+ fi
+ ;;
+ "m")
+ testmode="$OPTARG"
+ ;;
+ "f")
+ filesize="$OPTARG"
+ ;;
+ "t")
+ do_tcp=$((do_tcp+1))
+ ;;
+ "C")
+ checksum=true
+ ;;
+ "?")
+ usage $0
+ exit ${KSFT_FAIL}
+ ;;
+ esac
+done
+
+ns1=""
+ns2=""
+ns3=""
+ns4=""
+
+TEST_GROUP=""
+
+# This function is used in the cleanup trap
+#shellcheck disable=SC2317,SC2329
+cleanup()
+{
+ rm -f "$cin_disconnect"
+ rm -f "$cin" "$cout"
+ rm -f "$sin" "$sout"
+ rm -f "$capout"
+
+ mptcp_lib_ns_exit "${ns1}" "${ns2}" "${ns3}" "${ns4}"
+}
+
+mptcp_lib_check_mptcp
+mptcp_lib_check_kallsyms
+mptcp_lib_check_tools ip tc
+
+sin=$(mktemp)
+sout=$(mktemp)
+cin=$(mktemp)
+cout=$(mktemp)
+capout=$(mktemp)
+cin_disconnect="$cin".disconnect
+trap cleanup EXIT
+
+mptcp_lib_ns_init ns1 ns2 ns3 ns4
+
+# "$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
+
+if $capture; then
+ rndh="${ns1:4}"
+ mptcp_lib_pr_info "Packet capture files will have this prefix: ${rndh}-"
+fi
+
+set_ethtool_flags() {
+ local ns="$1"
+ local dev="$2"
+ local flags="$3"
+
+ if ip netns exec $ns ethtool -K $dev $flags 2>/dev/null; then
+ mptcp_lib_pr_info "set $ns dev $dev: ethtool -K $flags"
+ fi
+}
+
+set_random_ethtool_flags() {
+ local flags=""
+ local r=$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 "$ethtool_args"
+fi
+
+print_larger_title() {
+ # here we don't have the time, a bit longer for the alignment
+ MPTCP_LIB_TEST_FORMAT="%02u %-69s" \
+ mptcp_lib_print_title "${@}"
+}
+
+check_mptcp_disabled()
+{
+ local disabled_ns
+ mptcp_lib_ns_init disabled_ns
+
+ print_larger_title "New MPTCP socket can be blocked via sysctl"
+
+ # mainly to cover more code
+ if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then
+ mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs"
+ mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs"
+ ret=${KSFT_FAIL}
+ return 1
+ fi
+
+ # net.mptcp.enabled should be enabled by default
+ if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then
+ mptcp_lib_pr_fail "net.mptcp.enabled sysctl is not 1 by default"
+ mptcp_lib_result_fail "net.mptcp.enabled sysctl is not 1 by default"
+ ret=${KSFT_FAIL}
+ 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$" && err=1
+ mptcp_lib_ns_exit "${disabled_ns}"
+
+ if [ ${err} -eq 0 ]; then
+ mptcp_lib_pr_fail "New MPTCP socket cannot be blocked via sysctl"
+ mptcp_lib_result_fail "New MPTCP socket cannot be blocked via sysctl"
+ ret=${KSFT_FAIL}
+ return 1
+ fi
+
+ mptcp_lib_pr_ok
+ mptcp_lib_result_pass "New MPTCP socket can be blocked via sysctl"
+ return 0
+}
+
+do_ping()
+{
+ local listener_ns="$1"
+ local connector_ns="$2"
+ local connect_addr="$3"
+ local ping_args="-q -c 1"
+ local rc=0
+
+ if mptcp_lib_is_v6 "${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 [ $rc -ne 0 ] ; then
+ mptcp_lib_pr_fail "$listener_ns -> $connect_addr connectivity"
+ ret=${KSFT_FAIL}
+
+ return 1
+ fi
+
+ return 0
+}
+
+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="$7"
+
+ port=$((port + 1))
+
+ if [ "$rcvbuf" -gt 0 ]; then
+ extra_args+=" -R $rcvbuf"
+ fi
+
+ if [ "$sndbuf" -gt 0 ]; then
+ extra_args+=" -S $sndbuf"
+ fi
+
+ if [ -n "$testmode" ]; then
+ extra_args+=" -m $testmode"
+ fi
+
+ if [ -n "$extra_args" ] && $options_log; then
+ mptcp_lib_pr_info "extra options: $extra_args"
+ fi
+ options_log=false
+
+ :> "$cout"
+ :> "$sout"
+ :> "$capout"
+
+ local addr_port
+ addr_port=$(printf "%s:%d" ${connect_addr} ${port})
+ local pretty_title
+ pretty_title="$(printf "%.3s %-5s -> %.3s (%-20s) %-5s" ${connector_ns} ${cl_proto} ${listener_ns} ${addr_port} ${srv_proto})"
+ mptcp_lib_print_title "${pretty_title}"
+
+ local tap_title="${connector_ns:0:3} ${cl_proto} -> ${listener_ns:0:3} (${addr_port}) ${srv_proto}"
+
+ 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" >> "${capout}" 2>&1 &
+ local cappid_listener=$!
+
+ if [ ${listener_ns} != ${connector_ns} ]; then
+ ip netns exec ${connector_ns} tcpdump ${capopt} \
+ -w "${capfile}-connector.pcap" >> "${capout}" 2>&1 &
+ local cappid_connector=$!
+ fi
+
+ sleep 1
+ fi
+
+ mptcp_lib_nstat_init "${listener_ns}"
+ if [ ${listener_ns} != ${connector_ns} ]; then
+ mptcp_lib_nstat_init "${connector_ns}"
+ fi
+
+ ip netns exec ${listener_ns} \
+ ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
+ $extra_args $local_addr < "$sin" > "$sout" &
+ local spid=$!
+
+ mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}"
+
+ local start
+ start=$(date +%s%3N)
+ ip netns exec ${connector_ns} \
+ ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
+ $extra_args $connect_addr < "$cin" > "$cout" &
+ local cpid=$!
+
+ mptcp_lib_wait_timeout "${timeout_test}" "${listener_ns}" \
+ "${connector_ns}" "${port}" "${cpid}" "${spid}" &
+ local timeout_pid=$!
+
+ wait $cpid
+ local retc=$?
+ wait $spid
+ local rets=$?
+
+ if kill -0 $timeout_pid; then
+ # Finished before the timeout: kill the background job
+ mptcp_lib_kill_group_wait $timeout_pid
+ timeout_pid=0
+ fi
+
+ local stop
+ stop=$(date +%s%3N)
+
+ if $capture; then
+ sleep 1
+ kill ${cappid_listener}
+ if [ ${listener_ns} != ${connector_ns} ]; then
+ kill ${cappid_connector}
+ fi
+ fi
+
+ mptcp_lib_nstat_get "${listener_ns}"
+ if [ ${listener_ns} != ${connector_ns} ]; then
+ mptcp_lib_nstat_get "${connector_ns}"
+ fi
+
+ local duration
+ duration=$((stop-start))
+ printf "(duration %05sms) " "${duration}"
+ if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ] || [ ${timeout_pid} -ne 0 ]; then
+ mptcp_lib_pr_fail "client exit code $retc, server $rets"
+ mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}"
+
+ echo
+ cat "$capout"
+ mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}"
+ return 1
+ fi
+
+ mptcp_lib_check_transfer $sin $cout "file received by client"
+ retc=$?
+ mptcp_lib_check_transfer $cin $sout "file received by server"
+ rets=$?
+
+ local extra=""
+ local stat_synrx
+ local stat_ackrx
+ local stat_cookietx
+ local stat_cookierx
+ local stat_ooo
+ local stat_tcpfb
+ stat_synrx=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableSYNRX")
+ stat_ackrx=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableACKRX")
+ stat_cookietx=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesSent")
+ stat_cookierx=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtSyncookiesRecv")
+ stat_ooo=$(mptcp_lib_get_counter "${listener_ns}" "TcpExtTCPOFOQueue")
+ stat_tcpfb=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtMPCapableFallbackACK")
+
+ expect_synrx=0
+ expect_ackrx=0
+
+ cookies=$(ip netns exec ${listener_ns} sysctl net.ipv4.tcp_syncookies)
+ cookies=${cookies##*=}
+
+ if [ ${cl_proto} = "MPTCP" ] && [ ${srv_proto} = "MPTCP" ]; then
+ expect_synrx=${connect_per_transfer}
+ expect_ackrx=${connect_per_transfer}
+ fi
+
+ if [ ${stat_synrx} -lt ${expect_synrx} ]; then
+ mptcp_lib_pr_fail "lower MPC SYN rx (${stat_synrx})" \
+ "than expected (${expect_synrx})"
+ retc=1
+ fi
+ if [ ${stat_ackrx} -lt ${expect_ackrx} ]; then
+ if [ ${stat_ooo} -eq 0 ]; then
+ mptcp_lib_pr_fail "lower MPC ACK rx (${stat_ackrx})" \
+ "than expected (${expect_ackrx})"
+ rets=1
+ else
+ extra+=" [ Note ] fallback due to TCP OoO"
+ fi
+ fi
+
+ if $checksum; then
+ local csum_err_s
+ local csum_err_c
+ csum_err_s=$(mptcp_lib_get_counter "${listener_ns}" "MPTcpExtDataCsumErr")
+ csum_err_c=$(mptcp_lib_get_counter "${connector_ns}" "MPTcpExtDataCsumErr")
+
+ if [ $csum_err_s -gt 0 ]; then
+ mptcp_lib_pr_fail "server got ${csum_err_s} data checksum error[s]"
+ rets=1
+ fi
+
+ if [ $csum_err_c -gt 0 ]; then
+ mptcp_lib_pr_fail "client got ${csum_err_c} data checksum error[s]"
+ retc=1
+ fi
+ fi
+
+ if [ ${stat_ooo} -eq 0 ] && [ ${stat_tcpfb} -gt 0 ]; then
+ mptcp_lib_pr_fail "unexpected fallback to TCP"
+ rets=1
+ fi
+
+ if [ $cookies -eq 2 ];then
+ if [ $stat_cookietx -eq 0 ] ;then
+ extra+=" WARN: CookieSent: did not advance"
+ fi
+ if [ $stat_cookierx -eq 0 ] ;then
+ extra+=" WARN: CookieRecv: did not advance"
+ fi
+ else
+ if [ $stat_cookietx -gt 0 ] ;then
+ extra+=" WARN: CookieSent: changed"
+ fi
+ if [ $stat_cookierx -gt 0 ] ;then
+ extra+=" WARN: CookieRecv: changed"
+ fi
+ fi
+
+ if [ ${stat_synrx} -gt ${expect_synrx} ]; then
+ extra+=" WARN: SYNRX: expect ${expect_synrx},"
+ extra+=" got ${stat_synrx} (probably retransmissions)"
+ fi
+ if [ ${stat_ackrx} -gt ${expect_ackrx} ]; then
+ extra+=" WARN: ACKRX: expect ${expect_ackrx},"
+ extra+=" got ${stat_ackrx} (probably retransmissions)"
+ fi
+
+ if [ $retc -eq 0 ] && [ $rets -eq 0 ]; then
+ mptcp_lib_pr_ok "${extra:1}"
+ mptcp_lib_result_pass "${TEST_GROUP}: ${tap_title}"
+ else
+ if [ -n "${extra}" ]; then
+ mptcp_lib_print_warn "${extra:1}"
+ fi
+ mptcp_lib_result_fail "${TEST_GROUP}: ${tap_title}"
+ fi
+
+ cat "$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)))
+
+ mptcp_lib_make_file $name 1024 $ksize
+ dd if=/dev/urandom conv=notrunc of="$name" oflag=append bs=1 count=$rem 2> /dev/null
+
+ echo "Created $name (size $(stat -c "%s" "$name") B) 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 ! $ipv6 && mptcp_lib_is_v6 "${connect_addr}"; then
+ return 0
+ fi
+
+ local local_addr
+ if mptcp_lib_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 ! $ipv6 && mptcp_lib_is_v6 "${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$"; then
+ mptcp_lib_pr_skip "${msg} not supported by the kernel"
+ mptcp_lib_result_skip "${TEST_GROUP}"
+ return
+ fi
+
+ if ! ip netns exec "$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
+ then
+ mptcp_lib_pr_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 mptcp_lib_is_v6 "${connect_addr}"; then
+ local_addr="::"
+ r6flag="-6"
+ else
+ local_addr="0.0.0.0"
+ fi
+
+ if ! ip -net "$listener_ns" $r6flag rule add fwmark 1 lookup 100; then
+ ip netns exec "$listener_ns" nft flush ruleset
+ mptcp_lib_pr_skip "$msg, ip $r6flag rule failed"
+ mptcp_lib_fail_if_expected_feature "ip rule"
+ mptcp_lib_result_skip "${TEST_GROUP}"
+ return
+ fi
+
+ if ! ip -net "$listener_ns" route add local $local_addr/0 dev lo table 100; then
+ ip netns exec "$listener_ns" nft flush ruleset
+ ip -net "$listener_ns" $r6flag rule del fwmark 1 lookup 100
+ mptcp_lib_pr_skip "$msg, ip route add local $local_addr failed"
+ mptcp_lib_fail_if_expected_feature "ip route"
+ mptcp_lib_result_skip "${TEST_GROUP}"
+ return
+ fi
+
+ mptcp_lib_pr_info "test $msg"
+
+ port=$((20000 - 1))
+ 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 [ $lret -ne 0 ]; then
+ mptcp_lib_pr_fail "$msg, mptcp connection error"
+ ret=$lret
+ return 1
+ fi
+
+ mptcp_lib_pr_info "$msg pass"
+ return 0
+}
+
+run_tests_peekmode()
+{
+ local peekmode="$1"
+
+ TEST_GROUP="peek mode: ${peekmode}"
+ mptcp_lib_pr_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 ${peekmode}"
+}
+
+run_tests_mptfo()
+{
+ TEST_GROUP="MPTFO"
+
+ if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then
+ mptcp_lib_pr_skip "TFO not supported by the kernel"
+ mptcp_lib_result_skip "${TEST_GROUP}"
+ return
+ fi
+
+ mptcp_lib_pr_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
+ mptcp_lib_pr_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$"; then
+ mptcp_lib_pr_skip "Full disconnect not supported"
+ mptcp_lib_result_skip "${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="$old_cin"
+ connect_per_transfer=3
+
+ mptcp_lib_pr_info "disconnect"
+ run_tests_lo "$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 [ ${ret} -ne 0 ]; then
+ mptcp_lib_pr_fail "${msg}"
+
+ final_ret=${ret}
+ ret=${KSFT_PASS}
+
+ 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 "$sin" "server"
+
+mptcp_lib_subtests_last_ts_reset
+
+check_mptcp_disabled
+
+stop_if_error "The kernel configuration is not valid for MPTCP"
+
+print_larger_title "Validating network environment with pings"
+for sender in "$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"
+mptcp_lib_pr_ok
+
+[ -n "$tc_loss" ] && tc -net "$ns2" qdisc add dev ns2eth3 root netem loss random $tc_loss delay ${tc_delay}ms
+tc_info="loss of $tc_loss "
+test "$tc_delay" -gt 0 && tc_info+="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}% ${reorder2}%"
+ tc_info+="$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 $tc_reorder"
+ tc_info+="$tc_reorder with delay ${reorder_delay}ms "
+fi
+
+mptcp_lib_pr_info "Using ${tc_info}on ns3eth4"
+
+tc -net "$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}
generated by cgit (git 2.34.1) at 2025-12-25 22:19:05 +0000