DLSw support, from Paul Ionescu.

svn path=/trunk/; revision=4449

1 files changed, 444 insertions, 0 deletions

diff --git a/packet-dlsw.c b/packet-dlsw.c
new file mode 100644
index 0000000000..3e797d8690
--- /dev/null
+++ b/packet-dlsw.c
@@ -0,0 +1,444 @@
+/* packet-dlsw.c
+ * Routines for DLSw packet dissection (Data Link Switching)
+ * Copyright 2001, Paul Ionescu <paul@acorp.ro>
+ *
+ * $Id: packet-dlsw.c,v 1.1 2001/12/26 21:17:49 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+/* DLSw dissector ( RFC 1434, RFC 1795, RFC 2166) */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+
+#include <string.h>
+#include <glib.h>
+#include "packet.h"
+
+static int proto_dlsw = -1;
+
+static gint ett_dlsw = -1;
+static gint ett_dlsw_header = -1;
+static gint ett_dlsw_data = -1;
+static gint ett_dlsw_vector = -1;
+
+#define  CANUREACH               0x03                     
+#define  ICANREACH               0x04
+#define  REACH_ACK               0x05
+#define  DGRMFRAME               0x06
+#define  XIDFRAME                0x07
+#define  CONTACT                 0x08
+#define  CONTACTED               0x09
+#define  RESTART_DL              0x10
+#define  DL_RESTARTED            0x11
+#define  ENTER_BUSY              0x0C
+#define  EXIT_BUSY               0x0D
+#define  INFOFRAME               0x0A
+#define  HALT_DL                 0x0E
+#define  DL_HALTED               0x0F
+#define  NETBIOS_NQ              0x12
+#define  NETBIOS_NR              0x13
+#define  DATAFRAME               0x14
+#define  HALT_DL_NOACK           0x19
+#define  NETBIOS_ANQ             0x1A
+#define  NETBIOS_ANR             0x1B
+#define  KEEPALIVE               0x1D
+#define  CAP_EXCHANGE            0x20
+#define  IFCM                    0x21
+#define  TEST_CIRCUIT_REQ        0x7A
+#define  TEST_CIRCUIT_RSP        0x7B
+
+static const value_string dlsw_type_vals[] = {
+	{ CANUREACH        , "Can U Reach Station-circuit start" },
+	{ ICANREACH        , "I Can Reach Station-circuit start" },
+	{ REACH_ACK        , "Reach Acknowledgment" },
+	{ DGRMFRAME        , "Datagram Frame" },
+	{ XIDFRAME         , "XID Frame" },
+	{ CONTACT          , "Contact Remote Station" },
+	{ CONTACTED        , "Remote Station Contacted" },
+	{ RESTART_DL       , "Restart Data Link" },
+	{ DL_RESTARTED     , "Data Link Restarted" },
+	{ ENTER_BUSY       , "Enter Busy" },
+	{ EXIT_BUSY        , "Exit Busy" },
+	{ INFOFRAME        , "Information (I) Frame" },
+	{ HALT_DL          , "Halt Data Link" },
+	{ DL_HALTED        , "Data Link Halted" },
+	{ NETBIOS_NQ       , "NETBIOS Name Query-circuit setup" },
+	{ NETBIOS_NR       , "NETBIOS Name Recog-circuit setup" },
+	{ DATAFRAME        , "Data Frame" },
+	{ HALT_DL_NOACK    , "Halt Data Link with no Ack" },
+	{ NETBIOS_ANQ      , "NETBIOS Add Name Query" },
+	{ NETBIOS_ANR      , "NETBIOS Add Name Response" },
+	{ KEEPALIVE        , "Transport Keepalive Message" },
+	{ CAP_EXCHANGE     , "Capabilities Exchange" },
+	{ IFCM             , "Independent Flow Control Message" },
+	{ TEST_CIRCUIT_REQ , "Test Circuit Request" },
+	{ TEST_CIRCUIT_RSP , "Test Circuit Response" },
+	{ 0 , NULL }
+};
+static const value_string dlsw_version_vals[] = {
+        { 0x31        , "Version 1 (RFC 1795)" },
+        { 0x32        , "Version 2 (RFC 2166)" },
+        { 0x33        , "Vendor Specific" },
+        { 0x34        , "Vendor Specific" },
+        { 0x35        , "Vendor Specific" },
+        { 0x36        , "Vendor Specific" },
+        { 0x37        , "Vendor Specific" },
+        { 0x38        , "Vendor Specific" },
+        { 0x39        , "Vendor Specific" },
+        { 0x3A        , "Vendor Specific" },
+        { 0x3B        , "Vendor Specific" },
+        { 0x3C        , "Vendor Specific" },
+        { 0x3D        , "Vendor Specific" },
+        { 0x3E        , "Vendor Specific" },
+        { 0x3F        , "Vendor Specific" },
+        { 0x4B        , "Pre 1 (RFC 1434)" },
+        { 0x00        , NULL }
+};
+
+static const value_string dlsw_vector_vals[] = {
+        { 0x81        , "Vendor ID Control Vector" },
+        { 0x82        , "DLSw Version Control Vector" },
+        { 0x83        , "Initial Pacing Window Control Vector" },
+        { 0x84        , "Version String Control Vector" },
+        { 0x85        , "Mac Address Exclusivity Control Vector" },
+        { 0x86        , "Supported SAP List Control Vector" },
+        { 0x87        , "TCP Connections Control Vector" },
+        { 0x88        , "NetBIOS Name Exclusivity Control Vector" },
+        { 0x89        , "MAC Address List Control Vector" },
+        { 0x8a        , "NetBIOS Name List Control Vector" },
+        { 0x8b        , "Vendor Context Control Vector" },
+        { 0x8c        , "Multicast Capabilities Control Vector" },
+        { 0x8d        , "Reserved for future use" },
+        { 0x8e        , "Reserved for future use" },
+        { 0x8f        , "Reserved for future use" },
+        { 0x90        , "Reserved for future use" },
+        { 0x91        , " Control Vector" },
+        { 0x92        , " Control Vector" },
+        { 0x93        , " Control Vector" },
+        { 0x94        , " Control Vector" },
+        { 0x95        , " Control Vector" },
+        { 0x96        , " Control Vector" },
+        { 0x00        , NULL }
+};
+
+static const value_string dlsw_pri_vals[] = {
+        { 0        , "Unsupported" },
+        { 1        , "Low Priority" },
+        { 2        , "Medium Priority" },
+        { 3        , "High Priority" },
+        { 4        , "Highest Priority" },
+        { 5        , "Reserved" },
+        { 6        , "Reserved" },
+        { 7        , "Reserved" }
+};
+
+
+
+
+#define DLSW_GDSID_SEND		0x1520
+#define DLSW_GDSID_ACK		0x1521
+#define DLSW_GDSID_REF		0x1522
+
+static const value_string dlsw_gds_vals[] = {
+        { DLSW_GDSID_SEND , "Request Capabilities GDS" },
+        { DLSW_GDSID_ACK  , "Response Capabilities GDS" },
+        { DLSW_GDSID_REF  , "Refuse Capabilities GDS" }, 
+        { 0               , NULL }
+};
+
+static const value_string dlsw_refuse_vals[] = {
+	{ 0x1	, "invalid GDS length for a DLWs Capabilities Exchange Request"},
+	{ 0x2	, "invalid GDS id for a DLSw Capabilities Exchange Request"},
+	{ 0x3	, "vendor Id control vector is missing"},
+	{ 0x4	, "DLSw Version control vector is missing"},
+	{ 0x5	, "initial Pacing Window control vector is missing"},
+	{ 0x6	, "length of control vectors doewn't correlate to the length of the GDS variable"},
+	{ 0x7	, "invalid control vector id"},
+	{ 0x8	, "length of control vector invalid"},
+	{ 0x9	, "invalid control vector data value"},
+	{ 0xa	, "duplicate control vector"},
+	{ 0xb	, "out-of-sequence control vector"},
+	{ 0xc	, "DLSw Supported SAP List control vector is missing"},
+	{ 0xd	, "inconsistent DLSw Version, Multicast Capabilities,\
+ and TCP Connections CV received on the inbound Capabilities exchange"},
+	{ 0x0	, NULL }
+};
+
+#define UDP_PORT_DLSW		2067
+#define TCP_PORT_DLSW		2065  
+#define DLSW_INFO_HEADER	16
+#define DLSW_CMD_HEADER		72
+
+static dissector_handle_t dlsw_handle;
+
+static void
+dissect_dlsw_capex(tvbuff_t *tvb, proto_tree *tree, proto_tree *ti);
+
+static void
+dissect_dlsw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ guint version,hlen = 0,mlen = 0,mtype,offset,dlchlen = 0,direction;
+ proto_tree      *dlsw_tree = NULL, *ti,*ti2, *dlsw_header_tree = NULL;
+ proto_tree      *dlsw_data_tree;
+
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+   col_set_str(pinfo->cinfo, COL_PROTOCOL, "DLSw");
+
+ version=tvb_get_guint8(tvb,0);
+
+ if (check_col(pinfo->cinfo, COL_INFO))
+   col_add_fstr(pinfo->cinfo, COL_INFO, "DLSw %s",val_to_str(version , dlsw_version_vals, "Unknown Version"));
+
+ if (tree) 
+ {
+   ti = proto_tree_add_item(tree, proto_dlsw, tvb, 0, tvb_length(tvb), FALSE);
+   dlsw_tree = proto_item_add_subtree(ti, ett_dlsw);
+   
+   hlen=tvb_get_guint8(tvb,1);
+
+   ti2 = proto_tree_add_text (dlsw_tree, tvb, 0, hlen,"DLSw header, %s",
+     val_to_str(version , dlsw_version_vals, "Unknown Version"));
+           
+   dlsw_header_tree = proto_item_add_subtree(ti2, ett_dlsw_header);
+   proto_tree_add_text (dlsw_header_tree,tvb,0 ,1,"Version        = %s",
+    val_to_str(version , dlsw_version_vals, "Unknown Version, dissection may be innacurate"));
+   proto_tree_add_text (dlsw_header_tree,tvb,1 ,1,"Header Length  = %u",hlen) ;
+   mlen=tvb_get_ntohs(tvb,2);
+   proto_tree_add_text (dlsw_header_tree,tvb,2 ,2,"Message Length = %u",mlen);
+   proto_tree_add_text (dlsw_header_tree,tvb,4 ,4,"Remote DLC     = %u",tvb_get_ntohl(tvb,4)) ;
+   proto_tree_add_text (dlsw_header_tree,tvb,8 ,4,"Remote DLC PID = %u",tvb_get_ntohl(tvb,8)) ;
+   proto_tree_add_text (dlsw_header_tree,tvb,12,2,"Reserved") ;
+  } ;
+  
+  mtype=tvb_get_guint8(tvb,14);
+  if (check_col(pinfo->cinfo, COL_INFO))
+     col_append_fstr(pinfo->cinfo, COL_INFO, ", %s",val_to_str(mtype , dlsw_type_vals, "Unknown message Type"));
+  if (tree)
+  {  
+   proto_tree_add_text (dlsw_header_tree,tvb,14,1,"Message Type   = %s (%d)",
+    val_to_str(mtype , dlsw_type_vals, "Unknown Type"),mtype);
+   proto_tree_add_text (dlsw_header_tree, tvb, 15,1,"Flow ctrl byte = %d",tvb_get_guint8(tvb,15));
+
+   if (hlen != DLSW_INFO_HEADER) 
+    {
+    proto_tree_add_text (dlsw_header_tree,tvb, 16,1,"Protocol ID    = %d",tvb_get_guint8(tvb,16)) ;
+    proto_tree_add_text (dlsw_header_tree,tvb, 17,1,"Header Number  = %d",tvb_get_guint8(tvb,17)) ;
+    proto_tree_add_text (dlsw_header_tree,tvb, 18,2,"Reserved") ;
+    proto_tree_add_text (dlsw_header_tree,tvb, 20,1,"Largest Frame size  = %d",tvb_get_guint8(tvb,20)) ;
+    proto_tree_add_text (dlsw_header_tree,tvb, 21,1,"SSP Flags      = %d",tvb_get_guint8(tvb,21)) ;
+    proto_tree_add_text (dlsw_header_tree,tvb, 22,1,"Circuit priority = %s",
+     match_strval((tvb_get_guint8(tvb,22)&7),dlsw_pri_vals)) ;
+    proto_tree_add_text (dlsw_header_tree,tvb, 23,1,"Old message type = %s (%d)",
+     val_to_str(tvb_get_guint8(tvb,23) , dlsw_type_vals, "Unknown Type"),tvb_get_guint8(tvb,23));
+    if (mtype==CAP_EXCHANGE)
+     {
+     proto_tree_add_text (dlsw_header_tree,tvb, 24 ,14,"Not used for CapEx") ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 38,1,"Frame direction   =  %s",
+      tvb_get_guint8(tvb,38)==1?"Capabilities request":"Capabilities response") ;    
+     proto_tree_add_text (dlsw_header_tree,tvb, 39,33,"Not used for CapEx") ;
+     }
+    else
+     {
+     proto_tree_add_text (dlsw_header_tree,tvb, 24,6,"Target MAC Address  = %s",tvb_bytes_to_str(tvb,24,6)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 30,6,"Origin MAC Address  = %s",tvb_bytes_to_str(tvb,30,6)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 36,1,"Origin Link SAP     = %02x",tvb_get_guint8(tvb,36)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 37,1,"Target Link SAP     = %02x",tvb_get_guint8(tvb,37)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 38,1,"Frame direction   = %d",tvb_get_guint8(tvb,38)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 39,3,"Reserved") ;
+     dlchlen=tvb_get_ntohs(tvb,42);
+     proto_tree_add_text (dlsw_header_tree,tvb, 42,2,"DLC Header Length = %d",dlchlen) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 44,4,"Origin DLC Port ID     = %u",tvb_get_ntohl(tvb,44)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 48,4,"Origin DLC             = %u",tvb_get_ntohl(tvb,48)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 52,4,"Origin Transport ID    = %u",tvb_get_ntohl(tvb,52)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 56,4,"Target DLC Port ID     = %u",tvb_get_ntohl(tvb,56)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 60,4,"Target DLC             = %u",tvb_get_ntohl(tvb,60)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 64,4,"Target Transport ID    = %u",tvb_get_ntohl(tvb,64)) ;
+     proto_tree_add_text (dlsw_header_tree,tvb, 68,4,"Reserved") ;
+     }
+    direction=tvb_get_guint8(tvb,38);
+    }
+
+/* end of header dissector */
+
+    ti2 = proto_tree_add_text (dlsw_tree, tvb, hlen, mlen,"DLSw data");
+    dlsw_data_tree = proto_item_add_subtree(ti2, ett_dlsw_data);
+
+    switch (mtype) 
+      {
+      case CAP_EXCHANGE:
+        dissect_dlsw_capex(tvb_new_subset(tvb, hlen, mlen, -1), dlsw_data_tree,ti2);
+        break;
+      case IFCM:
+      case INFOFRAME:
+      case KEEPALIVE:
+        proto_tree_add_text (dlsw_data_tree,tvb,hlen,mlen,"Data") ;
+        break;
+
+      default:
+        if (dlchlen!=0)
+         {
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen,1,"DLC Header - AC byte : 0x%02x",tvb_get_guint8(tvb,hlen)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+1,1,"DLC Header - FC byte : 0x%02x",tvb_get_guint8(tvb,hlen+1)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+2,6,"DLC Header - DA : %s",tvb_bytes_to_str(tvb,hlen+2,6)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+8,6,"DLC Header - SA : %s",tvb_bytes_to_str(tvb,hlen+8,6)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+14,18,"DLC Header - RIF : %s",tvb_bytes_to_str(tvb,hlen+14,18)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+32,1,"DLC Header - DSAP : 0x%02x",tvb_get_guint8(tvb,hlen+32)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+33,1,"DLC Header - SSAP : 0x%02x",tvb_get_guint8(tvb,hlen+33)) ;
+         proto_tree_add_text (dlsw_data_tree,tvb,hlen+34,1,"DLC Header - Ctrl : 0x%02x",tvb_get_guint8(tvb,hlen+34)) ;
+         }
+      	proto_tree_add_text (dlsw_data_tree,tvb,hlen+dlchlen,mlen-dlchlen,"Data") ;
+      }
+
+   }
+}
+
+static void
+dissect_dlsw_capex(tvbuff_t *tvb, proto_tree *tree, proto_tree *ti2)
+{
+ int mlen,vlen,vtype,offset=4,gdsid,sap,i=0;
+ proto_tree *ti,*dlsw_vector_tree;
+ mlen=tvb_get_ntohs(tvb,0);
+ gdsid=tvb_get_ntohs(tvb,2);
+ proto_tree_add_text (tree,tvb,0,2,"Capabilities Length =  %d",mlen) ;
+ proto_tree_add_text (tree,tvb,2,2,"%s",val_to_str( gdsid, dlsw_gds_vals, "Invalid GDS ID"));
+ proto_item_append_text(ti2," - %s",val_to_str( gdsid, dlsw_gds_vals, "Invalid GDS ID"));
+ switch (gdsid) {
+  case DLSW_GDSID_ACK:
+    break;
+  case DLSW_GDSID_REF:
+    proto_tree_add_text (tree,tvb,4,2,"Erorr pointer =  %d",tvb_get_ntohs(tvb,4));
+    proto_tree_add_text (tree,tvb,6,2,"Erorr cause = %s",
+     val_to_str(tvb_get_ntohs(tvb,6), dlsw_refuse_vals, "Unknown refuse cause"));
+    break;
+  case DLSW_GDSID_SEND:
+    while (offset < mlen){
+      vlen=tvb_get_guint8(tvb,offset);
+      vtype=tvb_get_guint8(tvb,offset+1);
+      ti=proto_tree_add_text (tree,tvb,offset,vlen,"%s",
+         val_to_str(vtype,dlsw_vector_vals,"Unknown vector type"));
+      dlsw_vector_tree = proto_item_add_subtree(ti, ett_dlsw_vector);
+      proto_tree_add_text (dlsw_vector_tree,tvb,offset,1,  "Vector Length = %d",vlen);
+      proto_tree_add_text (dlsw_vector_tree,tvb,offset+1,1,"Vector Type   = %s (0x%02x)",
+       val_to_str(vtype,dlsw_vector_vals,"Unknown vector type"),vtype);
+      switch (vtype){
+        case 0x81:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "OUI = 0x%06x",tvb_get_ntoh24(tvb,offset+2));
+          break;
+        case 0x82:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "DLSw Version = %d.%d",tvb_get_guint8(tvb,offset+2),tvb_get_guint8(tvb,offset+3));
+          break;            
+        case 0x83:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "Initial Pacing Window = %d",tvb_get_ntohs(tvb,offset+2));
+          break;
+        case 0x84:
+           proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "Version String = %s",tvb_format_text(tvb,offset+2,vlen-2));
+          break;
+        case 0x85:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "MAC Address Exclusivity = %s",tvb_get_guint8(tvb,offset+2)==1?"On":"Off");
+          break;
+        case 0x86:
+          while (i<vlen-2)
+           {
+           sap=tvb_get_guint8(tvb,offset+2+i);
+           proto_tree_add_text (dlsw_vector_tree,tvb,offset+2+i,1,
+            "SAP List Support = 0x%x0=%s 0x%x2=%s 0x%x4=%s 0x%x6=%s 0x%x8=%s 0x%xa=%s 0x%xc=%s 0x%xe=%s",
+            i,sap&0x80?"on ":"off",i,sap&0x40?"on ":"off",i,sap&0x20?"on ":"off",i,sap&0x10?"on ":"off",
+            i,sap&0x08?"on ":"off",i,sap&0x04?"on ":"off",i,sap&0x02?"on ":"off",i,sap&0x01?"on ":"off");
+           i++;
+           }
+          break;
+        case 0x87:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "TCP connections  = %d",tvb_get_guint8(tvb,offset+2));
+          break;
+        case 0x88:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "NetBIOS Name Exclusivity = %s",tvb_get_guint8(tvb,offset+2)==1?"On":"Off");
+          break;
+        case 0x89:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "MAC Address List = %s / %s",tvb_bytes_to_str(tvb,offset+2,6)
+           ,tvb_bytes_to_str(tvb,offset+8,6));
+          break;
+        case 0x8a:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+/* %s */           "NetBIOS name = %s",/* tvb_get_guint8(tvb,offset+2)==0?"Individual":"Group",*/
+           tvb_format_text(tvb,offset+2,vlen-2));
+          break;
+        case 0x8b:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "Vendor OUI = 0x%06x",tvb_get_ntoh24(tvb,offset+2));
+          break;
+        case 0x8c:
+          proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,
+           "Multicast Version Number = %d",tvb_get_guint8(tvb,offset+2));
+          break;
+	default:
+        proto_tree_add_text (dlsw_vector_tree,tvb,offset+2,vlen-2,"Vector Data = ???");
+        }
+      offset+=vlen;
+      };
+    break;
+  default:
+    proto_tree_add_text (tree,tvb,4,mlen - 4,"Unknown data");
+  }
+        
+}
+
+void
+proto_register_dlsw(void)
+{
+	static gint *ett[] = {
+		&ett_dlsw,
+		&ett_dlsw_header,
+		&ett_dlsw_data,
+		&ett_dlsw_vector,
+	};
+	proto_dlsw = proto_register_protocol("Data Link SWitching", "DLSw", "dlsw");
+/*	proto_register_field_array(proto_dlsw, hf, array_length(hf)); */
+	proto_register_subtree_array(ett, array_length(ett));
+        dlsw_handle = find_dissector("dlsw");
+}
+                                                                             
+void
+proto_reg_handoff_dlsw(void)
+{
+	dlsw_handle = create_dissector_handle(dissect_dlsw, proto_dlsw);
+
+	dissector_add("tcp.port", TCP_PORT_DLSW, dlsw_handle);
+	dissector_add("udp.port", UDP_PORT_DLSW, dlsw_handle);
+}