add helper function dissect_pn_int32()

svn path=/trunk/; revision=22431

2 files changed, 20 insertions, 0 deletions

diff --git a/plugins/profinet/packet-pn.c b/plugins/profinet/packet-pn.c
index f37d505e0a..856e8ab43c 100644
--- a/plugins/profinet/packet-pn.c
+++ b/plugins/profinet/packet-pn.c
@@ -117,6 +117,23 @@ dissect_pn_int16(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
     return offset + 2;
 }
 
+/* dissect a 32 bit signed integer */
+int
+dissect_pn_int32(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
+                       proto_tree *tree, int hfindex, gint32 *pdata)
+{
+    gint32 data;
+
+    data = tvb_get_ntohl (tvb, offset);
+
+    if (tree) {
+        proto_tree_add_int(tree, hfindex, tvb, offset, 4, data);
+    }
+    if (pdata)
+        *pdata = data;
+    return offset + 4;
+}
+
 /* dissect a 24bit OUI (IEC organizational unique id) */
 int 
 dissect_pn_oid(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
diff --git a/plugins/profinet/packet-pn.h b/plugins/profinet/packet-pn.h
index 3e7c23cb03..5a23e7a498 100644
--- a/plugins/profinet/packet-pn.h
+++ b/plugins/profinet/packet-pn.h
@@ -42,6 +42,9 @@ extern int dissect_pn_uint32(tvbuff_t *tvb, gint offset, packet_info *pinfo,
 extern int dissect_pn_int16(tvbuff_t *tvb, gint offset, packet_info *pinfo,
                        proto_tree *tree, int hfindex, gint16 *pdata);
 
+extern int dissect_pn_int32(tvbuff_t *tvb, gint offset, packet_info *pinfo,
+                       proto_tree *tree, int hfindex, gint32 *pdata);
+
 extern int dissect_pn_oid(tvbuff_t *tvb, int offset, packet_info *pinfo,
                     proto_tree *tree, int hfindex, guint32 *pdata);