diff options
Diffstat (limited to 'tools/testing/selftests/net/mptcp/diag.sh')
| -rwxr-xr-x | tools/testing/selftests/net/mptcp/diag.sh | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/mptcp/diag.sh b/tools/testing/selftests/net/mptcp/diag.sh new file mode 100755 index 000000000..400cf1ce9 --- /dev/null +++ b/tools/testing/selftests/net/mptcp/diag.sh @@ -0,0 +1,241 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +. "$(dirname "${0}")/mptcp_lib.sh" + +rndh=$(printf %x $sec)-$(mktemp -u XXXXXX) +ns="ns1-$rndh" +ksft_skip=4 +test_cnt=1 +timeout_poll=100 +timeout_test=$((timeout_poll * 2 + 1)) +ret=0 + +flush_pids() +{ + # mptcp_connect in join mode will sleep a bit before completing, + # give it some time + sleep 1.1 + + ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGUSR1 &>/dev/null +} + +cleanup() +{ + ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGKILL &>/dev/null + + ip netns del $ns +} + +mptcp_lib_check_mptcp + +ip -Version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi +ss -h | grep -q MPTCP +if [ $? -ne 0 ];then + echo "SKIP: ss tool does not support MPTCP" + exit $ksft_skip +fi + +__chk_nr() +{ + local command="$1" + local expected=$2 + local msg="$3" + local skip="${4:-SKIP}" + local nr + + nr=$(eval $command) + + printf "%-50s" "$msg" + if [ $nr != $expected ]; then + if [ $nr = "$skip" ] && ! mptcp_lib_expect_all_features; then + echo "[ skip ] Feature probably not supported" + else + echo "[ fail ] expected $expected found $nr" + ret=$test_cnt + fi + else + echo "[ ok ]" + fi + test_cnt=$((test_cnt+1)) +} + +__chk_msk_nr() +{ + local condition=$1 + shift 1 + + __chk_nr "ss -inmHMN $ns | $condition" "$@" +} + +chk_msk_nr() +{ + __chk_msk_nr "grep -c token:" "$@" +} + +wait_msk_nr() +{ + local condition="grep -c token:" + local expected=$1 + local timeout=20 + local msg nr + local max=0 + local i=0 + + shift 1 + msg=$* + + while [ $i -lt $timeout ]; do + nr=$(ss -inmHMN $ns | $condition) + [ $nr == $expected ] && break; + [ $nr -gt $max ] && max=$nr + i=$((i + 1)) + sleep 1 + done + + printf "%-50s" "$msg" + if [ $i -ge $timeout ]; then + echo "[ fail ] timeout while expecting $expected max $max last $nr" + ret=$test_cnt + elif [ $nr != $expected ]; then + echo "[ fail ] expected $expected found $nr" + ret=$test_cnt + else + echo "[ ok ]" + fi + test_cnt=$((test_cnt+1)) +} + +chk_msk_fallback_nr() +{ + __chk_msk_nr "grep -c fallback" "$@" +} + +chk_msk_remote_key_nr() +{ + __chk_msk_nr "grep -c remote_key" "$@" +} + +__chk_listen() +{ + local filter="$1" + local expected=$2 + local msg="$3" + + __chk_nr "ss -N $ns -Ml '$filter' | grep -c LISTEN" "$expected" "$msg" 0 +} + +chk_msk_listen() +{ + lport=$1 + + # destination port search should always return empty list + __chk_listen "dport $lport" 0 "listen match for dport $lport" + + # should return 'our' mptcp listen socket + __chk_listen "sport $lport" 1 "listen match for sport $lport" + + __chk_listen "src inet:0.0.0.0:$lport" 1 "listen match for saddr and sport" + + __chk_listen "" 1 "all listen sockets" + + nr=$(ss -Ml $filter | wc -l) +} + +# $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 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" && + break + sleep 0.1 + done +} + +wait_connected() +{ + local listener_ns="${1}" + local port="${2}" + + local port_hex i + + port_hex="$(printf "%04X" "${port}")" + for i in $(seq 10); do + ip netns exec ${listener_ns} grep -q " 0100007F:${port_hex} " /proc/net/tcp && break + sleep 0.1 + done +} + +trap cleanup EXIT +ip netns add $ns +ip -n $ns link set dev lo up + +echo "a" | \ + timeout ${timeout_test} \ + ip netns exec $ns \ + ./mptcp_connect -p 10000 -l -t ${timeout_poll} -w 20 \ + 0.0.0.0 >/dev/null & +wait_local_port_listen $ns 10000 +chk_msk_nr 0 "no msk on netns creation" +chk_msk_listen 10000 + +echo "b" | \ + timeout ${timeout_test} \ + ip netns exec $ns \ + ./mptcp_connect -p 10000 -r 0 -t ${timeout_poll} -w 20 \ + 127.0.0.1 >/dev/null & +wait_connected $ns 10000 +chk_msk_nr 2 "after MPC handshake " +chk_msk_remote_key_nr 2 "....chk remote_key" +chk_msk_fallback_nr 0 "....chk no fallback" +flush_pids + + +echo "a" | \ + timeout ${timeout_test} \ + ip netns exec $ns \ + ./mptcp_connect -p 10001 -l -s TCP -t ${timeout_poll} -w 20 \ + 0.0.0.0 >/dev/null & +wait_local_port_listen $ns 10001 +echo "b" | \ + timeout ${timeout_test} \ + ip netns exec $ns \ + ./mptcp_connect -p 10001 -r 0 -t ${timeout_poll} -w 20 \ + 127.0.0.1 >/dev/null & +wait_connected $ns 10001 +chk_msk_fallback_nr 1 "check fallback" +flush_pids + +NR_CLIENTS=100 +for I in `seq 1 $NR_CLIENTS`; do + echo "a" | \ + timeout ${timeout_test} \ + ip netns exec $ns \ + ./mptcp_connect -p $((I+10001)) -l -w 20 \ + -t ${timeout_poll} 0.0.0.0 >/dev/null & +done +wait_local_port_listen $ns $((NR_CLIENTS + 10001)) + +for I in `seq 1 $NR_CLIENTS`; do + echo "b" | \ + timeout ${timeout_test} \ + ip netns exec $ns \ + ./mptcp_connect -p $((I+10001)) -w 20 \ + -t ${timeout_poll} 127.0.0.1 >/dev/null & +done + +wait_msk_nr $((NR_CLIENTS*2)) "many msk socket present" +flush_pids + +exit $ret |