1 files changed, 56 insertions, 0 deletions
diff --git a/core/modules/qemu/data/opt/openslx/vmchooser/plugins/qemukvm/includes/setup_network.inc b/core/modules/qemu/data/opt/openslx/vmchooser/plugins/qemukvm/includes/setup_network.inc
new file mode 100644
index 00000000..73fb2518
--- /dev/null
+++ b/core/modules/qemu/data/opt/openslx/vmchooser/plugins/qemukvm/includes/setup_network.inc
@@ -0,0 +1,56 @@
+###################################
+# qemu/kvm include: Network setup #
+###################################
+# This now makes use of the qemu's bridge helper
+# which creates a tap device and adds it to the
+# bridge corresponding to the network type
+# TODO configurable network type
+setup_network() {
+	# list available models with:
+	#		qemu-system-x86_64 -net nic,model=?
+	# e.g. as of 2.0.0:
+	#		ne2k_pci,i82551,i82557b,i82559er,rtl8139,e1000,pcnet,virtio
+	declare -rg NIC_MODEL="e1000"
+
+	# add MAC address and network card model
+	VIRTCMDOPTS+=( "-device" "${NIC_MODEL},mac=${VM_MAC_ADDR},netdev=guestnet0" )
+
+	# TODO support different network kinds for lectures in bwlehrpool-suite, just NAT for now
+	declare -g NETWORK_MODE="nat"
+
+	# detect if qemu's bridge helper binary is available
+	declare -g QEMU_BRIDGE_HELPER=
+	for HELPER_PATH in /usr/lib/qemu-bridge-helper /usr/local/libexec/qemu-bridge-helper; do
+		if [ -x "${HELPER_PATH}" ] && [ -u "${HELPER_PATH}" ]; then
+			QEMU_BRIDGE_HELPER="${HELPER_PATH}"
+			readonly QEMU_BRIDGE_HELPER
+			break
+		fi
+	done
+	if isempty QEMU_BRIDGE_HELPER; then
+		writelog "Could not find qemu-bridge-helper on this machine. Setting network mode to user."
+		# Even though falling back to creating tap devices ourselves, we should instead
+		# garantee the existance of qemu's helper on minilinux build time.
+		# qemu's user network mode allows tcp/udp connections in a nat-fashion and
+		# it allows access to the web which seems suffisant for a fallback.
+		NETWORK_MODE="user"
+	fi
+
+	case "${NETWORK_MODE}" in
+	nat*)
+		VIRTCMDOPTS+=( "-netdev" "bridge,br=nat1,id=guestnet0,helper=${QEMU_BRIDGE_HELPER}" )
+		;;
+	bridge*)
+		VIRTCMDOPTS+=( "-netdev" "bridge,br=br0,id=guestnet0,helper=${QEMU_BRIDGE_HELPER}" )
+		;;
+	host*)
+		VIRTCMDOPTS+=( "-netdev" "bridge,br=vsw2,id=guestnet0,helper=${QEMU_BRIDGE_HELPER}" )
+		;;
+	user*|*)
+		VIRTCMDOPTS+=( "-netdev" "user,id=guestnet0" )
+		;;
+	esac
+}
+
+## MAIN ##
+call_post_source setup_network