Small refactoring to support new packet-out API

Change-Id: I33094045b074fc00352ec1ba62e18e690dc3f3ad
diff --git a/src/main/java/net/onrc/onos/core/packetservice/BroadcastPacketOutNotification.java b/src/main/java/net/onrc/onos/core/packetservice/BroadcastPacketOutNotification.java
new file mode 100644
index 0000000..cea27ae
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/packetservice/BroadcastPacketOutNotification.java
@@ -0,0 +1,73 @@
+package net.onrc.onos.core.packetservice;
+
+
+// TODO This class is too generic to be handled by ProxyArpService.
+// TODO The generic broadcast packet shouldn't contain an IP address which is
+// only for ARP packets.
+
+/**
+ * Notification to all ONOS instances to broadcast this packet out the edge of
+ * the network. The edge is defined as any port that doesn't have a link to
+ * another switch. The one exception is the port that the packet was received
+ * on.
+ */
+public class BroadcastPacketOutNotification extends PacketOutNotification {
+
+    private static final long serialVersionUID = 1L;
+
+    private final int address;
+    private final long inSwitch;
+    private final short inPort;
+
+    protected BroadcastPacketOutNotification() {
+        super();
+        this.address = -1;
+        this.inSwitch = -1;
+        this.inPort = -1;
+    }
+
+    /**
+     * Class constructor.
+     *
+     * @param packet   packet data to send in the packet-out
+     * @param address  target IP address if the packet is an ARP packet
+     * @param inSwitch dpid of the switch the packet was received on
+     * @param inPort   port number of the receiving port
+     */
+    public BroadcastPacketOutNotification(byte[] packet, int address,
+                                          long inSwitch, short inPort) {
+        super(packet);
+
+        this.address = address;
+        this.inSwitch = inSwitch;
+        this.inPort = inPort;
+    }
+
+    /**
+     * Get the dpid of the switch the packet was received on.
+     *
+     * @return receiving switch dpid
+     */
+    public long getInSwitch() {
+        return inSwitch;
+    }
+
+    /**
+     * Get the port number of the port the packet was received on.
+     *
+     * @return receiving port number
+     */
+    public short getInPort() {
+        return inPort;
+    }
+
+    /**
+     * Get the target IP address if the packet is an ARP packet.
+     *
+     * @return the target IP address for ARP packets, or null if the packet is
+     * not an ARP packet
+     */
+    public int getTargetAddress() {
+        return address;
+    }
+}