File vif-bridge.mtu.patch of Package xen

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File vif-bridge.mtu.patch of Package xen

Subject: set mtu from bridge also on vif interface
References: bug#625394

Apply mtu size from bridge interface also in vif interface.
This depends on a kernel change which allows arbitrary mtu sizes until
the frontend driver has connected to the backend driver. Without this
kernel change, the vif mtu size will be limited to 1500 with this change
to the vif-bridge script.

(xen-unstable changeset:   22885:005722613063)

Signed-off-by: Olaf Hering <olaf@aepfle.de>

---
 tools/hotplug/Linux/vif-bridge |    5 +++++
 1 file changed, 5 insertions(+)

Index: xen-4.1.2-testing/tools/hotplug/Linux/vif-bridge
===================================================================
--- xen-4.1.2-testing.orig/tools/hotplug/Linux/vif-bridge
+++ xen-4.1.2-testing/tools/hotplug/Linux/vif-bridge
@@ -104,6 +104,11 @@ case "$command" in
 
     add)
         setup_virtual_bridge_port "$dev"
+	mtu="`ip link show $bridge | awk '/mtu/ { print $5 }'`"
+	if [ -n "$mtu" ] && [ "$mtu" -gt 0 ]
+	then
+		ip link set $vif mtu $mtu || :
+	fi
         add_to_bridge "$bridge" "$dev"
         ;;
 esac

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File vif-bridge.mtu.patch of Package xen

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