linux-leds (WIP)

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>

1 files changed, 156 insertions, 0 deletions

diff --git a/linux/bin/linux-leds b/linux/bin/linux-leds
new file mode 100755
index 0000000..ffe17b3
--- /dev/null
+++ b/linux/bin/linux-leds
@@ -0,0 +1,156 @@
+#!/bin/sh
+
+# Open Infrastructure: service-tools
+
+# Copyright (C) 2014-2022 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+PROGRAM="$(basename "${0}")"
+
+RED="\033[1;33;31m"
+GREEN="\033[1;33;32m"
+NORMAL="\033[0m"
+
+Ethtool_get ()
+{
+	DEVICE="${1}"
+	FLAG="${2}"
+	TARGET_VALUE="${3}"
+
+	if ethtool --show-priv-flags "${DEVICE}" | awk '{ print $1 }' | grep -qs "^${FLAG}$"
+	then
+		CURRENT_VALUE="$(ethtool --show-priv-flags "${DEVICE}" | awk "/^${FLAG} / { print \$3 }")"
+
+		if [ "${CURRENT_VALUE}" = "${TARGET_VALUE}" ]
+		then
+			echo -n " ${FLAG}=${GREEN}${CURRENT_VALUE}${NORMAL}"
+		else
+			echo -n " ${FLAG}=${RED}${CURRENT_VALUE}${NORMAL}"
+		fi
+	fi
+}
+
+Ethtool_set ()
+{
+	DEVICE="${1}"
+	FLAG="${2}"
+	VALUE="${3}"
+
+	if ethtool --show-priv-flags "${DEVICE}" | awk '{ print $1 }' | grep -qs "^${FLAG}$"
+	then
+		echo -n " ${FLAG}"
+		ethtool --set-priv-flags "${DEVICE}" "${FLAG}" "${VALUE}"
+		echo -n "=${VALUE}"
+	fi
+}
+
+Test_root ()
+{
+	case "$(id -u)" in
+		0)
+			;;
+
+		*)
+			echo "'${PROGRAM}': must be run as root (or use sudo)" >&2
+			exit 1
+			;;
+	esac
+}
+
+Start ()
+{
+	Test_root
+
+	for DEVICE in ${DEVICES}
+	do
+		echo -n "Configuring ${DEVICE}:"
+		Ethtool_set "${DEVICE}" disable-fw-lldp on
+		Ethtool_set "${DEVICE}" link-down-on-close on
+		echo
+	done
+}
+
+Stop ()
+{
+	Test_root
+
+	for DEVICE in ${DEVICES}
+	do
+		echo -n "Deconfiguring ${DEVICE}:"
+		Ethtool_set "${DEVICE}" disable-fw-lldp off
+		Ethtool_set "${DEVICE}" link-down-on-close off
+		echo
+	done
+}
+
+Status ()
+{
+	for DEVICE in ${DEVICES}
+	do
+		echo -n "${DEVICE}:"
+		Ethtool_get "${DEVICE}" disable-fw-lldp on
+		Ethtool_get "${DEVICE}" link-down-on-close on
+		echo
+	done
+}
+
+Usage ()
+{
+	echo "Usage: ${PROGRAM} {start|stop|status}" >&2
+	echo >&2
+	echo "See ${PROGRAM}(1) for more information." >&2
+
+	exit 1
+}
+
+if [ -z "${1}" ]
+then
+	Usage
+fi
+
+if [ ! -x /usr/sbin/ethtool ]
+then
+	echo "'${PROGRAM}': /usr/sbin/ethtool - no such file." >&2
+	exit 1
+fi
+
+DEVICES="$(grep -s '^DRIVER=i40e' /sys/class/net/*/device/uevent | awk -F/ '{ print $5 }' | sort -V)"
+
+if [ -z "${DEVICES}" ]
+then
+	echo "'${PROGRAM}': no network devices available with i40e driver" >&2
+fi
+
+case "${1}" in
+	start)
+		Start
+		;;
+
+	stop)
+		Stop
+		;;
+
+	status)
+		Status
+		;;
+
+	*)
+		Usage
+		;;
+esac