[ovs-dev] [PATCH 1.7] rhel: Add OVSREQUIRES to automatically bring up OpenFlow interface dependencies

Thomas Graf tgraf at redhat.com
Fri Jan 25 08:31:56 PST 2013


The use of OpenFlow controllers may require for a subset of
the network (typically the management network intrerface) to be
brought up before the openvswitch service is started.

The newly introduced key "OVSREQUIRES" allows to specify a
list of interfaces that need the be brought up before the
openvswitch service is autostarted. It is also possible to
build a chain of bridge dependencies.

	TYPE=OVSBridge
	OVSREQURIES="em1"
	[...]

A special UPPEDSTACK var that is passed along avoids getting
lost in dependency loops.

Signed-off-by: Thomas Graf <tgraf at redhat.com>
---
 rhel/etc_sysconfig_network-scripts_ifup-ovs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/rhel/etc_sysconfig_network-scripts_ifup-ovs b/rhel/etc_sysconfig_network-scripts_ifup-ovs
index 61b0af9..dcf90e4 100755
--- a/rhel/etc_sysconfig_network-scripts_ifup-ovs
+++ b/rhel/etc_sysconfig_network-scripts_ifup-ovs
@@ -34,6 +34,25 @@ if [ ! -x ${OTHERSCRIPT} ]; then
 	OTHERSCRIPT="/etc/sysconfig/network-scripts/ifup-eth"
 fi
 
+check_recursion()
+{
+	[ -n "${UPPEDSTACK}" ] && for _r in ${UPPEDSTACK}; do
+		[ "$_r" = "$1" ] && return 1
+	done
+
+	return 0
+}
+
+if [ -z "${UPPEDSTACK}" ]; then
+	UPPEDSTACK="${DEVICE}"
+fi
+
+[ -n "${OVSREQUIRES}" ] && for _i in ${OVSREQUIRES}; do
+	if ( check_recursion "$_i" ); then
+		UPPEDSTACK="${UPPEDSTACK} $_i" /sbin/ifup "$_i"
+	fi
+done
+
 [ -f /var/lock/subsys/openvswitch ] || /sbin/service openvswitch start
 
 case "$TYPE" in
-- 
1.7.11.7



More information about the dev mailing list