From 9bdf5e71af93a54a3b88bdcd42e090cacf5ebd9c Mon Sep 17 00:00:00 2001
From: Michael Tremer <michael.tremer@ipfire.org>
Date: Mon, 15 Jun 2020 15:32:41 +0000
Subject: [PATCH] networking: Set configured MTU to all network zones

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---
 src/initscripts/networking/any | 11 +++++++++++
 src/initscripts/networking/red | 11 ++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/initscripts/networking/any b/src/initscripts/networking/any
index 5609a9efe9..8d23009505 100644
--- a/src/initscripts/networking/any
+++ b/src/initscripts/networking/any
@@ -26,6 +26,7 @@ if [ "$(basename $0)" == "green" ]; then
 	NETADDRESS="${GREEN_NETADDRESS}"
 	NETMASK="${GREEN_NETMASK}"
 	DEVICE="${GREEN_DEV}"
+	MTU="${GREEN_MTU}"
 elif [ "$(basename $0)" == "blue" ]; then
 	DEVICE="${BLUE_DEV}"
 	ADDRESS="${BLUE_ADDRESS}"
@@ -33,6 +34,7 @@ elif [ "$(basename $0)" == "blue" ]; then
 	NETADDRESS="${BLUE_NETADDRESS}"
 	NETMASK="${BLUE_NETMASK}"
 	DEVICE="${BLUE_DEV}"
+	MTU="${GREEN_MTU}"
 elif [ "$(basename $0)" == "orange" ]; then
 	DEVICE="${ORANGE_DEV}"
 	ADDRESS="${ORANGE_ADDRESS}"
@@ -40,6 +42,7 @@ elif [ "$(basename $0)" == "orange" ]; then
 	NETADDRESS="${ORANGE_NETADDRESS}"
 	NETMASK="${ORANGE_NETMASK}"
 	DEVICE="${ORANGE_DEV}"
+	MTU="${ORANGE_MTU}"
 fi
 
 if [ -z "${BROADCAST}" ]; then
@@ -77,6 +80,14 @@ case "${1}" in
 			exit 1
 		fi
 
+		# Set the MTU
+		if [ -n "${MTU}" ]; then
+			if ! ip link set dev "${DEVICE}" mtu "${MTU}" &>/dev/null; then
+				boot_mesg "Could not set MTU of ${MTU} to ${DEVICE}..."
+				echo_warning
+			fi
+		fi
+
 		# Create & Enable vnstat data collection
 		/usr/bin/vnstat -u -i ${DEVICE} -r --enable --force > /dev/null 2>&1
 		
diff --git a/src/initscripts/networking/red b/src/initscripts/networking/red
index db4209b440..44e0daa68e 100644
--- a/src/initscripts/networking/red
+++ b/src/initscripts/networking/red
@@ -54,11 +54,13 @@ if [ "${TYPE}" == "STATIC" ]; then
 		BROADCAST="${RED_BROADCAST}"
 		NETADDRESS="${RED_NETADDRESS}"
 		NETMASK="${RED_NETMASK}"
+		MTU="${RED_MTU}"
 	else
 		ADDRESS="${GREEN_ADDRESS}"
 		BROADCAST="${GREEN_BROADCAST}"
 		NETADDRESS="${GREEN_NETADDRESS}"
 		NETMASK="${GREEN_NETMASK}"
+		MTU="${GREEN_MTU}"
 	fi
 	GATEWAY="${DEFAULT_GATEWAY}"
 	# DNS1
@@ -108,7 +110,14 @@ case "${1}" in
 		/usr/bin/vnstat -u -i ${DEVICE} -r --enable --force > /dev/null 2>&1
 		
 		if [ "${TYPE}" == "STATIC" ]; then
-		
+			# Set the MTU
+			if [ -n "${MTU}" ]; then
+				if ! ip link set dev "${DEVICE}" mtu "${MTU}" &>/dev/null; then
+					boot_mesg "Could not set MTU of ${MTU} to ${DEVICE}..."
+					echo_warning
+				fi
+			fi
+
 			if [ "$DEVICE" != "${GREEN_DEV}" ]; then
 				boot_mesg "Adding IPv4 address ${ADDRESS} to the ${DEVICE} interface..."
 				ip addr add ${args} dev ${DEVICE}
-- 
2.39.2