From 2141e10bafc87aae46ab5b323351bf822352a3e1 Mon Sep 17 00:00:00 2001
From: Florian Pose <fp@igh-essen.com>
Date: Mon, 26 Jun 2006 14:36:11 +0000
Subject: [PATCH] Configuring EoE bridge at startup.
---
script/ethercat.sh | 48 ++++++++++++++++++++++++++++++++++++++++++++--
script/sysconfig | 30 +++++++++++++++++++++++++++++
2 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/script/ethercat.sh b/script/ethercat.sh
index 5899b606..086ff1ae 100755
--- a/script/ethercat.sh
+++ b/script/ethercat.sh
@@ -66,14 +66,14 @@ case "$1" in
start)
echo -n "Starting EtherCAT master "
- if [ ! $DEVICE_INDEX ]; then
+ if [ -z "$DEVICE_INDEX" ]; then
echo "ERROR: DEVICE_INDEX not set!"
/bin/false
rc_status -v
rc_exit
fi
- if [ ! $EOE_DEVICES ]; then
+ if [ -z "$EOE_DEVICES" ]; then
EOE_DEVICES=0
fi
@@ -99,6 +99,50 @@ case "$1" in
rc_exit
fi
+ # Build EoE bridge
+ if [ -n "$EOE_BRIDGE" ]; then
+
+ EOE_INTERFACES=`/sbin/ifconfig -a | grep -o -E "^eoe[0-9]+ "`
+
+ # add bridge, if it does not already exist
+ if ! /sbin/brctl show | grep -E -q "^$EOE_BRIDGE"; then
+ if ! /sbin/brctl addbr $EOE_BRIDGE; then
+ /bin/false
+ rc_status -v
+ rc_exit
+ fi
+ fi
+
+ # free all interfaces of their addresses and add them to the bridge
+ for interface in $EOE_INTERFACES $EOE_EXTRA_INTERFACES; do
+ if ! /sbin/ifconfig $interface 0.0.0.0 up; then
+ /bin/false
+ rc_status -v
+ rc_exit
+ fi
+ if ! /sbin/brctl show | grep -E -q "^$EOE_BRIDGE.*$interface"; then
+ if ! /sbin/brctl addif $EOE_BRIDGE $interface; then
+ /bin/false
+ rc_status -v
+ rc_exit
+ fi
+ fi
+ done
+ if [ -n "$EOE_IP_ADDRESS" -a -n "$EOE_IP_NETMASK" ]; then
+ if ! /sbin/ifconfig $EOE_BRIDGE $EOE_IP_ADDRESS \
+ netmask $EOE_IP_NETMASK; then
+ /bin/false
+ rc_status -v
+ rc_exit
+ fi
+ fi
+ if ! /sbin/ifconfig $EOE_BRIDGE up; then
+ /bin/false
+ rc_status -v
+ rc_exit
+ fi
+ fi
+
rc_status -v
;;
diff --git a/script/sysconfig b/script/sysconfig
index cfaf478a..5bb4c7ac 100644
--- a/script/sysconfig
+++ b/script/sysconfig
@@ -18,4 +18,34 @@
#
#EOE_DEVICES=0
+#
+# Bridge all EoE interfaces after master startup
+# This variable shall contain the name of the EoE bridge to set up.
+# If the variable is empty or undefined, no EoE bridge will be built.
+#
+#EOE_BRIDGE=eoebr0
+
+#
+# IP address of the EoE bridge
+# Set both EOE_IP_ADDRESS and EOE_IP_NETMASK to let the local host communicate
+# with devices on the EoE bridge.
+#
+#EOE_IP_ADDRESS=192.168.X.X
+
+#
+# IP netmask of the EoE bridge
+# See EOE_IP_ADDRESS.
+#
+#EOE_IP_NETMASK=255.255.255.0
+
+#
+# List of extra interfaces to include in the EoE bridge.
+# Set this to interconnect the EoE bridge with other local interfaces.
+# If EOE_BRIDGE is empty or undefined, setting this variable has no effect.
+# Important: The IP address of these interfaces will be cleared. Set
+# EOE_IP_ADDRESS and EOE_IP_NETMASK accordingly to enable IP traffic to
+# extra interfaces.
+#
+#EOE_EXTRA_INTERFACES=eth0
+
#------------------------------------------------------------------------------
--
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