1 files changed, 35 insertions, 1 deletions

diff --git a/classes/qemuboot-testimage-network.bbclass b/classes/qemuboot-testimage-network.bbclass
index 18af1eea..57e03551 100644
--- a/classes/qemuboot-testimage-network.bbclass
+++ b/classes/qemuboot-testimage-network.bbclass
@@ -1,17 +1,51 @@
 # The recipe for init-ifupdown in core has a special-case for all
 # the Qemu MACHINES: it removes all external network interfaces
 # by default. However, eth0 is needed for testimage, so enable it here.
+
+# If QB_NETWORK_XEN_BRIDGE is set, configure bridging for the network.
+QB_NETWORK_XEN_BRIDGE ??= ""
+
 enable_runqemu_network() {
     : # no-op for non-qemu MACHINES
 }
+
 enable_runqemu_network:qemuall() {
+    # Do not override a network configuration for eth0 if one is present
     if ! grep -q eth0 "${IMAGE_ROOTFS}${sysconfdir}/network/interfaces" ; then
-        cat <<EOF >>${IMAGE_ROOTFS}${sysconfdir}/network/interfaces
+
+        # Xen host networking: use bridging to support guest networks
+        if [ -n "${QB_NETWORK_XEN_BRIDGE}" ] ; then
+            # Configure a Xen host network bridge and put eth0 on it
+            cat <<EOF >>${IMAGE_ROOTFS}${sysconfdir}/network/interfaces
+
+# Bridged host network for Xen testimage
+iface eth0 inet manual
+
+auto xenbr0
+iface xenbr0 inet dhcp
+        bridge_ports eth0
+EOF
+
+# Add a script to create the bridge and add eth0 if necessary
+            cat <<EOF >>${IMAGE_ROOTFS}${sysconfdir}/network/if-pre-up.d/xenbr0
+#!/bin/sh
+
+if [ "\$IFACE" = xenbr0 ]; then
+    brctl addbr xenbr0 || /bin/true
+    brctl addif xenbr0 eth0 || /bin/true
+    ifconfig eth0 up
+fi
+EOF
+            chmod 755 ${IMAGE_ROOTFS}${sysconfdir}/network/if-pre-up.d/xenbr0
+        else
+            # Just configure eth0
+            cat <<EOF >>${IMAGE_ROOTFS}${sysconfdir}/network/interfaces
 
 # Network for testimage
 auto eth0
 iface eth0 inet dhcp
 EOF
+        fi
     fi
 }
 ROOTFS_POSTPROCESS_COMMAND += 'enable_runqemu_network;'