X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fsal%2Fapi%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fsal%2Fpacket%2FIPv4.java;h=1e2f4277c1f4035b873c61502a43bdc1e6d6fe4c;hb=31045ff2b7b0106f7e7ef7198bed882131127f81;hp=7a7a5a757fb4ab4ff7184da84a25662f42729e07;hpb=eb9e1983a0fce7e4a381eff33e40cae957cddf53;p=controller.git

diff --git a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/IPv4.java b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/IPv4.java
index 7a7a5a757f..1e2f4277c1 100644
--- a/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/IPv4.java
+++ b/opendaylight/sal/api/src/main/java/org/opendaylight/controller/sal/packet/IPv4.java
@@ -455,7 +455,7 @@ public class IPv4 extends Packet {
         int end = start + getHeaderLen();
         short checkSum = (short) 0;
         int sum = 0, carry = 0, finalSum = 0;
-        int parsedHex = 0;
+        int wordData;
         int checksumStart = start
                 + (getfieldOffset(CHECKSUM) / NetUtils.NumBitsInAByte);
 
@@ -464,14 +464,8 @@ public class IPv4 extends Packet {
             if (i == checksumStart) {
                 continue;
             }
-            StringBuffer sbuffer = new StringBuffer();
-            sbuffer.append(String.format("%02X", data[i]));
-            if (i < (data.length - 1)) {
-                sbuffer.append(String.format("%02X", data[i + 1]));
-            }
-
-            parsedHex = Integer.valueOf(sbuffer.toString(), 16);
-            sum += parsedHex;
+            wordData = ((data[i] << 8) & 0xFF00) + (data[i + 1] & 0xFF);
+            sum = sum + wordData;
         }
         carry = (sum >> 16) & 0xFF;
         finalSum = (sum & 0xFFFF) + carry;