Add getChecksum() to the AD-SAL TCP class

[controller.git] / opendaylight / sal / api / src / main / java / org / opendaylight / controller / sal / packet / TCP.java

diff --git a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/TCP.java b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/TCP.java
index c7c7f99279d7528d6b5393ead637a02c4295aaf5..8253ac46d3f5405ace57da8022be90a183645a68 100644 (file)
--- a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/TCP.java
+++ b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/TCP.java
@@ -21,16 +21,16 @@ import org.apache.commons.lang3.tuple.Pair;
  */
 public class TCP extends Packet {
 
-    private static final String SRCPORT = "SourcePort";
-    private static final String DESTPORT = "DestinationPort";
-    private static final String SEQNUMBER = "SequenceNumber";
-    private static final String ACKNUMBER = "AcknoledgementNumber";
-    private static final String DATAOFFSET = "DataOffset";
-    private static final String RESERVED = "Reserved";
-    private static final String HEADERLENFLAGS = "HeaderLenFlags";
-    private static final String WINDOWSIZE = "WindowSize";
-    private static final String CHECKSUM = "Checksum";
-    private static final String URGENTPOINTER = "UrgentPointer";
+    public static final String SRCPORT = "SourcePort";
+    public static final String DESTPORT = "DestinationPort";
+    public static final String SEQNUMBER = "SequenceNumber";
+    public static final String ACKNUMBER = "AcknowledgementNumber";
+    public static final String DATAOFFSET = "DataOffset";
+    public static final String RESERVED = "Reserved";
+    public static final String HEADERLENFLAGS = "HeaderLenFlags";
+    public static final String WINDOWSIZE = "WindowSize";
+    public static final String CHECKSUM = "Checksum";
+    public static final String URGENTPOINTER = "UrgentPointer";
 
     private static Map<String, Pair<Integer, Integer>> fieldCoordinates = new LinkedHashMap<String, Pair<Integer, Integer>>() {
         private static final long serialVersionUID = 1L;
@@ -230,4 +230,12 @@ public class TCP extends Packet {
         return (BitBufferHelper.getShort(fieldValues.get(DESTPORT)));
     }
 
+    /**
+     * Get the stored checksum value of the TCP header
+     * @return short - the checksum
+     */
+    public short getChecksum() {
+        return (BitBufferHelper.getShort(fieldValues.get(CHECKSUM)));
+    }
+
 }