From a42d19fefdb99e1bf6787fe79460a27ffeb222ed Mon Sep 17 00:00:00 2001
From: Daniel Baumann <mail@daniel-baumann.ch>
Date: Tue, 24 May 2022 07:47:26 +0200
Subject: Refactoring linux-i40e for start/stop/status actions.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
---
 linux/bin/linux-i40e                   | 140 ++++++++++++++++++++++++++++++---
 linux/share/systemd/linux-i40e.service |   5 +-
 2 files changed, 131 insertions(+), 14 deletions(-)

(limited to 'linux')

diff --git a/linux/bin/linux-i40e b/linux/bin/linux-i40e
index b86c063..2c8f322 100755
--- a/linux/bin/linux-i40e
+++ b/linux/bin/linux-i40e
@@ -22,22 +22,138 @@
 set -e
 
 PROGRAM="$(basename ${0})"
-DEVICES="$(grep DRIVER=i40e /sys/class/net/*/device/uevent | awk -F/ '{ print $5 }' | sort -V)"
+
+RED="\033[1;33;31m"
+GREEN="\033[1;33;32m"
+YELLOW="\033[1;33;33m"
+BLUE="\033[1;33;34m"
+WHITE="\033[1;33;37m"
+NORMAL="\033[0m"
+
+Ethtool_get ()
+{
+	DEVICE="${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"
+	echo "'${PROGRAM}': no network devices available with i40e driver" >&2
 fi
 
-for DEVICE in ${DEVICES}
-do
-	echo -n "'${DEVICE}':"
+case "${1}" in
+	start)
+		Start
+		;;
+
+	stop)
+		Stop
+		;;
 
-	echo -n " disable-fw-lldp"
-	ethtool --set-priv-flags ${DEVICE} disable-fw-lldp on
-	echo -n "=on"
+	status)
+		Status
+		;;
 
-	echo -n " link-down-on-close"
-	ethtool --set-priv-flags ${DEVICE} link-down-on-close on
-	echo "=on"
-done
+	*)
+		Usage
+		;;
+esac
diff --git a/linux/share/systemd/linux-i40e.service b/linux/share/systemd/linux-i40e.service
index 379a6bb..5d7f99f 100644
--- a/linux/share/systemd/linux-i40e.service
+++ b/linux/share/systemd/linux-i40e.service
@@ -1,14 +1,15 @@
 # Open Infrastructure: service-tools
 
 [Unit]
-Description=linux-i40e options
+Description=setting recommended options for the Linux i40e device driver
 Documentation=man:linux-i40e
 Before=network.target
 
 [Service]
 Type=oneshot
 RemainAfterExit=yes
-ExecStart=/usr/bin/linux-i40e
+ExecStart=/usr/bin/linux-i40e start
+ExecStop=/usr/bin/linux-i40e stop
 StandardOutput=journal
 StandardError=journal
 
-- 
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