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|
#! /bin/sh
# SPDX-License-Identifier: BSD-3-Clause
#
# Copyright (c) 2024, Matthieu Baerts
SCRIPT="$(basename "${0}")"
VERSION="1"
PID_IP=
EQ="========================================"
title() {
printf "\n%s\n%s\n%s\n" "${EQ}" "${*}" "${EQ}"
}
stdout() {
printf "\n%s\n" "${*}"
}
stderr() {
stdout "${@}" >&2
}
cmd() {
title "${*}"
"${@}" 2>&1
}
start_ip_mptcp_monitor() {
title "ip mptcp monitor: start"
ip mptcp monitor 2>&1 & # not using cmd to get the right PID
PID_IP=$!
sleep 0.1 2>/dev/null || sleep 1
for _ in $(seq 20); do
out="$(ss -f netlink -H "src = rtnl:${PID_IP}" 2>/dev/null)" || break
[ "$(echo "${out}" | wc -l)" != 0 ] && return 0
sleep 0.1 2>/dev/null || break
done
if [ ! -d "/proc/${PID_IP}" ]; then
stdout "ip monitor has been killed"
return 1
fi
}
stop_ip_mptcp_monitor() {
title "ip mptcp monitor: stop"
if [ -n "${PID_IP}" ] && [ -d "/proc/${PID_IP}" ]; then
kill "${PID_IP}"
fi
}
collect_data_pre() {
stdout "${SCRIPT}: version ${VERSION}"
if [ "$(id -u)" != 0 ]; then
stderr "This script is not executed as root, not all info can be collected."
stderr "Press Enter to continue, Ctrl+C to stop"
read -r _
fi
cmd uname -a
cmd cat /etc/os-release
cmd sysctl net.mptcp
cmd ip mptcp endpoint show
cmd ip mptcp limits show
}
collect_data_post() {
cmd ss -ManiH
cmd nstat
}
collect_data() {
collect_data_pre
collect_data_post
}
collect_data_repro() {
collect_data_pre
cmd ss -ManiH
nstat -n 2>&1
start_ip_mptcp_monitor
stderr "Please reproduce the issue now, then press the Enter key when it is done."
read -r _
collect_data_post
stop_ip_mptcp_monitor
}
version() {
printf "%s: version %s\n" "${SCRIPT}" ${VERSION}
}
usage() {
version
printf "\n"
printf " -c | --collect Collect info and exit.\n"
printf " -r | --reproduce Collect info, start monitor, wait for user and exit.\n"
printf " -h | --help Show this and exit.\n"
printf " -v | --version Show the version and exit.\n"
printf "\n"
printf "Please check https://mptcp.dev website for more info.\n"
}
case "${1}" in
"-c" | "--collect")
collect_data
;;
"-r" | "--reproduce")
collect_data_repro
;;
"-h" | "--help")
usage
;;
"-v" | "--version")
version
;;
*)
usage >&2
exit 1
;;
esac
exit 0
|
