add support for fix_checksum_hw

Signed-off-by: Leo Ma <[email protected]>

Author: leomaatEric

src/main/java/com/cisco/trex/stateless/model/vm/FixChecksumHw.java

@@ -0,0 +1,49 @@
+package com.cisco.trex.stateless.model.vm;
+
+public class FixChecksumHw extends VMInstruction {
+
+    private String type;
+    private int l2_len;
+    private int l3_len;
+    private int l4_type;
+
+    public enum L4Type {
+        UDP(11),
+        TCP(13),
+        IP(17);
+
+        int value;
+
+        L4Type(int value) {
+            this.value = value;
+        }
+
+        int getValue() {
+            return value;
+        }
+    }
+
+    public FixChecksumHw(int l2_len, int l3_len, L4Type l4_type) {
+        super();
+        this.type = "fix_checksum_hw";
+        this.l2_len = l2_len;
+        this.l3_len = l3_len;
+        this.l4_type = l4_type.getValue();
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public int getL2_len() {
+        return l2_len;
+    }
+
+    public int getL3_len() {
+        return l3_len;
+    }
+
+    public int getL4_type() {
+        return l4_type;
+    }
+}