Wireshark · Ethereal-dev: [Ethereal-dev] enttec plugin

[Erwin Rol <mailinglists@xxxxxxxxxxxx>]

Hey all,

attached an update for the enttec plugin. It now dissects DMX in a
readable format (like Artnet). 

- Erwin

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 12456)
+++ ChangeLog	(working copy)
@@ -1,6 +1,10 @@
 $Id$
- 
+
 Overview of changes in ENTTEC Ethereal plugin
 
+Version 0.0.2:
+* Better dissection of DMX data
+* Better packet descriptions
+
 Version 0.0.1:
 * Intial version
Index: moduleinfo.h
===================================================================
--- moduleinfo.h	(revision 12456)
+++ moduleinfo.h	(working copy)
@@ -13,5 +13,5 @@
 #endif
 
 /* Version number of package */
-#define VERSION "0.0.1"
+#define VERSION "0.0.2"
 
Index: packet-enttec.c
===================================================================
--- packet-enttec.c	(revision 12456)
+++ packet-enttec.c	(working copy)
@@ -3,7 +3,7 @@
  *
  * $Id$
  *
- * Copyright (c) 2003 by Erwin Rol <erwin@xxxxxxxxxxxx>
+ * Copyright (c) 2003,2004 by Erwin Rol <erwin@xxxxxxxxxxxx>
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@xxxxxxxxxxxx>
@@ -59,10 +59,40 @@
  *	http://www.enttec.com/docs/enttec_protocol.pdf
  */
 
-/* Define udp_port for ENTTEC */
+/* Define UDP/TCP ports for ENTTEC */
 
 #define UDP_PORT_ENTTEC 0x0D05
+#define TCP_PORT_ENTTEC 0x0D05
 
+
+#define ENTTEC_HEAD_ESPR 0x45535052
+#define ENTTEC_HEAD_ESPP 0x45535050
+#define ENTTEC_HEAD_ESAP 0x45534150
+#define ENTTEC_HEAD_ESDD 0x45534444
+#define ENTTEC_HEAD_ESNC 0x45534E43
+#define ENTTEC_HEAD_ESZZ 0x45535A5A
+
+static const value_string enttec_head_vals[] = {
+	{ ENTTEC_HEAD_ESPR,	"Poll Reply" },
+	{ ENTTEC_HEAD_ESPP,	"Poll" },
+	{ ENTTEC_HEAD_ESAP,	"Ack/nAck" },
+	{ ENTTEC_HEAD_ESDD,	"DMX Data" },
+	{ ENTTEC_HEAD_ESNC,	"Config" },
+	{ ENTTEC_HEAD_ESZZ,	"Reset" },
+	{ 0,			NULL }
+};
+
+#define ENTTEC_DATA_TYPE_DMX		0x01
+#define ENTTEC_DATA_TYPE_CHAN_VAL	0x02
+#define ENTTEC_DATA_TYPE_RLE		0x04
+
+static const value_string enttec_data_type_vals[] = {
+	{ ENTTEC_DATA_TYPE_DMX,		"Uncompressed DMX" },
+	{ ENTTEC_DATA_TYPE_CHAN_VAL,	"Channel+Value" },
+	{ ENTTEC_DATA_TYPE_RLE,		"RLE Compressed DMX" },
+	{ 0,				NULL }
+};
+
 void proto_reg_handoff_enttec(void);
 
 /* Define the enttec proto */
@@ -71,6 +101,28 @@
 /* general */
 static int hf_enttec_head = -1;
 
+/* poll */
+static int hf_enttec_poll_type = -1;
+
+/* poll reply */
+static int hf_enttec_poll_reply_mac = -1;
+static int hf_enttec_poll_reply_node_type = -1;
+static int hf_enttec_poll_reply_version = -1;
+static int hf_enttec_poll_reply_switch = -1;
+static int hf_enttec_poll_reply_name = -1;
+static int hf_enttec_poll_reply_option = -1;
+static int hf_enttec_poll_reply_tos = -1;
+static int hf_enttec_poll_reply_ttl = -1;
+
+/* dmx data */
+static int hf_enttec_dmx_data_universe = -1;
+static int hf_enttec_dmx_data_start_code = -1;
+static int hf_enttec_dmx_data_type = -1;
+static int hf_enttec_dmx_data_size = -1;
+static int hf_enttec_dmx_data_data = -1;
+static int hf_enttec_dmx_data_data_filter = -1;
+static int hf_enttec_dmx_data_dmx_data = -1;
+
 /* Define the tree for enttec */
 static int ett_enttec = -1;
 
@@ -82,94 +134,456 @@
 static guint global_udp_port_enttec = UDP_PORT_ENTTEC;
 static guint udp_port_enttec = UDP_PORT_ENTTEC;
 
+static guint global_tcp_port_enttec = TCP_PORT_ENTTEC;
+static guint tcp_port_enttec = TCP_PORT_ENTTEC;
+
+static guint global_disp_chan_val_type = 0;
+static guint global_disp_col_count = 16;
+static guint global_disp_chan_nr_type = 0;
+
+
 /* A static handle for the ip dissector */
 static dissector_handle_t ip_handle;
 static dissector_handle_t rdm_handle;
 
+static gint
+dissect_enttec_poll_reply(tvbuff_t *tvb, guint offset, proto_tree *tree)
+{
+	proto_tree_add_item(tree, hf_enttec_poll_reply_mac, tvb,
+					offset, 6, FALSE);
+	offset += 6;
+
+	proto_tree_add_item(tree, hf_enttec_poll_reply_node_type, tvb,
+					offset, 2, FALSE);
+	offset += 2;
+
+	proto_tree_add_item(tree, hf_enttec_poll_reply_version, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+
+	proto_tree_add_item(tree, hf_enttec_poll_reply_switch, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+	
+	proto_tree_add_item(tree, hf_enttec_poll_reply_name, tvb,
+					offset, 10, FALSE);
+	offset += 10;
+
+	proto_tree_add_item(tree, hf_enttec_poll_reply_option, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+	
+	proto_tree_add_item(tree, hf_enttec_poll_reply_tos, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+	
+	proto_tree_add_item(tree, hf_enttec_poll_reply_ttl, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+
+	// data
+
+	return offset;
+}
+
+static gint
+dissect_enttec_poll(tvbuff_t *tvb, guint offset, proto_tree *tree)
+{
+	proto_tree_add_item(tree, hf_enttec_poll_type, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+
+	return offset;
+}
+
+static gint
+dissect_enttec_ack(tvbuff_t *tvb _U_, guint offset, proto_tree *tree _U_)
+{
+
+	return offset;
+}
+
+static gint
+dissect_enttec_dmx_data(tvbuff_t *tvb, guint offset, proto_tree *tree)
+{
+	const char* chan_format[] = {
+		"%2u ",
+		"%02x ",
+		"%3u "
+	};
+	const char* string_format[] = {
+		"%03x: %s",
+		"%3u: %s"
+	};
+
+	static guint8 dmx_data[512];
+	static guint16 dmx_data_offset[513]; /* 1 extra for last offset */
+	static char string[255];
+
+	proto_tree *hi,*si;
+	guint16 length,r,c,row_count;
+	guint8 v,type,count;
+	guint16 ci,ui,i,start_offset,end_offset;
+	char* ptr;
+
+	proto_tree_add_item(tree, hf_enttec_dmx_data_universe, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+
+	proto_tree_add_item(tree, hf_enttec_dmx_data_start_code, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+
+	type = tvb_get_guint8(tvb, offset);	
+	proto_tree_add_item(tree, hf_enttec_dmx_data_type, tvb,
+					offset, 1, FALSE);
+	offset += 1;
+
+	length = tvb_get_ntohs(tvb, offset);
+	proto_tree_add_item(tree, hf_enttec_dmx_data_size, tvb,
+					offset, 2, FALSE);
+	offset += 2;
+
+	if (length > 512)
+		length = 512;
+
+	if (type == ENTTEC_DATA_TYPE_RLE) {
+		/* uncompres the DMX data */
+		ui = 0;
+		ci = 0;
+		while (ci < length) {
+			v = tvb_get_guint8(tvb, offset+ci);
+			if (v == 0xFE) {
+				ci++;
+				count = tvb_get_guint8(tvb, offset+ci);
+				ci++;
+				v = tvb_get_guint8(tvb, offset+ci);
+				ci++;
+				for (i=0;i < count;i++) {
+					dmx_data[ui] = v;
+					dmx_data_offset[ui] = ci-3;
+					ui++;
+				}
+			} else if (v == 0xFD) {
+				ci++;
+				v = tvb_get_guint8(tvb, offset+ci);				
+				dmx_data[ui] = v;
+				dmx_data_offset[ui] = ci;
+				ci++;
+				ui++;
+			} else {
+				dmx_data[ui] = v;
+				dmx_data_offset[ui] = ci;
+				ui++;
+				ci++;
+			}
+		}
+		dmx_data_offset[ui] = ci;
+	} else {
+		for (ui=0; ui < length;ui++) {
+			dmx_data[ui] =  tvb_get_guint8(tvb, offset+ui);
+			dmx_data_offset[ui] = ui;
+		}
+		dmx_data_offset[ui] = ui;
+	} 
+
+
+	if (type == ENTTEC_DATA_TYPE_DMX || type == ENTTEC_DATA_TYPE_RLE) {
+		hi = proto_tree_add_item(tree,
+					hf_enttec_dmx_data_data,
+					tvb,
+					offset,
+					length,
+					FALSE);
+
+		si = proto_item_add_subtree(hi, ett_enttec);
+			
+		row_count = (ui/global_disp_col_count) + ((ui%global_disp_col_count) == 0 ? 0 : 1);
+		ptr = string;
+		for (r=0; r < row_count;r++) {
+			for (c=0;(c < global_disp_col_count) && (((r*global_disp_col_count)+c) < ui);c++) {
+				if ((c % (global_disp_col_count/2)) == 0) {
+					sprintf(ptr, " ");
+					ptr++;
+				}
+				v = dmx_data[(r*global_disp_col_count)+c];
+				if (global_disp_chan_val_type == 0) {
+					v = (v * 100) / 255;
+					if (v == 100) {
+						sprintf(ptr, "FL ");
+					} else {
+						sprintf(ptr, chan_format[global_disp_chan_val_type], v);
+					}
+				} else {
+					sprintf(ptr, chan_format[global_disp_chan_val_type], v);
+				}
+				ptr += strlen(ptr);
+			}
+
+			start_offset = dmx_data_offset[(r*global_disp_col_count)];
+			end_offset = dmx_data_offset[(r*global_disp_col_count)+c];		
+
+			proto_tree_add_none_format(si,hf_enttec_dmx_data_dmx_data, tvb,
+						offset+start_offset, 
+						end_offset-start_offset,
+						string_format[global_disp_chan_nr_type], (r*global_disp_col_count)+1, string);
+			ptr = string;
+		}
+		
+		proto_tree_add_item_hidden(si, hf_enttec_dmx_data_data_filter, tvb,
+				offset, length, FALSE );
+		
+		offset += length;
+	} else if (type == ENTTEC_DATA_TYPE_CHAN_VAL) {
+		proto_tree_add_item(tree, hf_enttec_dmx_data_data_filter, tvb,
+					offset, length, FALSE);
+		offset += length;
+	} else {
+		proto_tree_add_item(tree, hf_enttec_dmx_data_data_filter, tvb,
+					offset, length, FALSE);
+		offset += length;
+	}		
+
+	
+		
+	return offset;
+}
+
+static gint
+dissect_enttec_config(tvbuff_t *tvb _U_, guint offset, proto_tree *tree _U_)
+{
+
+	return offset;
+}
+
+static gint
+dissect_enttec_reset(tvbuff_t *tvb _U_, guint offset, proto_tree *tree _U_)
+{
+
+	return offset;
+}
+
 static void
-dissect_enttec(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
-  gint offset = 0;
-  proto_tree *ti,*enttec_tree=NULL;
+dissect_enttec(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) 
+{
+	gint offset = 0;
+	guint32 head = 0;
+	proto_tree *ti,*enttec_tree=NULL;
 
-  /* Set the protocol column */
-  if(check_col(pinfo->cinfo,COL_PROTOCOL)){
-    col_set_str(pinfo->cinfo,COL_PROTOCOL,"ENTTEC");
-  }
+	/* Set the protocol column */
+	if (check_col(pinfo->cinfo,COL_PROTOCOL)) {
+		col_set_str(pinfo->cinfo,COL_PROTOCOL,"ENTTEC");
+	}
 
-  /* Clear out stuff in the info column */
-  if(check_col(pinfo->cinfo,COL_INFO)){
-    col_clear(pinfo->cinfo,COL_INFO);
-  }
+	head = tvb_get_ntohl(tvb, offset);
 
-  if (tree) {
-    ti = proto_tree_add_item(tree, proto_enttec, tvb, offset, -1, FALSE);
-    enttec_tree = proto_item_add_subtree(ti, ett_enttec);
-  }
+	/* Clear out stuff in the info column */
+	if (check_col(pinfo->cinfo,COL_INFO)) {
+		col_clear(pinfo->cinfo,COL_INFO);
+		col_add_fstr(pinfo->cinfo, COL_INFO, "%s",
+				val_to_str(head, enttec_head_vals, "Unknown (0x%08x)"));
+	}
 
+	if (tree) {
+		ti = proto_tree_add_item(tree, proto_enttec, tvb, offset, -1, FALSE);
+		enttec_tree = proto_item_add_subtree(ti, ett_enttec);
+	}
 
-  if( enttec_tree ) {
-    proto_tree_add_item(enttec_tree, hf_enttec_head, tvb,
-                        offset, 4, FALSE );
-    offset += 4;
-  }
+	if (enttec_tree) {
+		proto_tree_add_item(enttec_tree, hf_enttec_head, tvb,
+					offset, 4, FALSE );
+		offset += 4;
+
+		switch (head) {
+			case ENTTEC_HEAD_ESPR:
+				offset = dissect_enttec_poll_reply( tvb, offset, enttec_tree);
+				break;
+
+			case ENTTEC_HEAD_ESPP:
+				offset = dissect_enttec_poll( tvb, offset, enttec_tree);
+				break;
+
+			case ENTTEC_HEAD_ESAP:
+				offset = dissect_enttec_ack( tvb, offset, enttec_tree);
+				break;
+
+			case ENTTEC_HEAD_ESDD:
+				offset = dissect_enttec_dmx_data( tvb, offset, enttec_tree);
+				break;
+
+			case ENTTEC_HEAD_ESNC:
+				offset = dissect_enttec_config( tvb, offset, enttec_tree);
+				break;
+
+			case ENTTEC_HEAD_ESZZ:
+				offset = dissect_enttec_reset( tvb, offset, enttec_tree);
+				break;
+		}
+
+	}
 }
 
 void
-proto_register_enttec(void) {
-  static hf_register_info hf[] = {
+proto_register_enttec(void) 
+{
+	static hf_register_info hf[] = {
+		/* General */
+		{ &hf_enttec_head,
+			{ "Head", "enttec.head",
+			  FT_UINT32, BASE_HEX, VALS(enttec_head_vals), 0x0,
+			  "Head", HFILL } },
+		{ &hf_enttec_poll_reply_mac,
+			{ "MAC", "enttec.poll_reply.mac",
+			  FT_ETHER, BASE_HEX, NULL, 0x0,
+			  "MAC", HFILL } },
+		{ &hf_enttec_poll_reply_node_type,
+			{ "Node Type", "enttec.poll_reply.node_type",
+			  FT_UINT16, BASE_HEX, NULL, 0x0,
+			  "Node Type", HFILL } },
+		{ &hf_enttec_poll_reply_version,
+			{ "Version", "enttec.poll_reply.version",
+			  FT_UINT8, BASE_DEC, NULL, 0x0,
+			  "Version", HFILL } },
+		{ &hf_enttec_poll_reply_switch,
+			{ "Switch settings", "enttec.poll_reply.switch_settings",
+			  FT_UINT8, BASE_HEX, NULL, 0x0,
+			  "Switch settings", HFILL } },
+		{ &hf_enttec_poll_reply_name,
+			{ "Name", "enttec.poll_reply.name",
+			  FT_STRING, BASE_DEC, NULL, 0x0,
+			  "Name", HFILL } },
+		{ &hf_enttec_poll_reply_option,
+			{ "Option Field", "enttec.poll_reply.option_field",
+			  FT_UINT8, BASE_HEX, NULL, 0x0,
+			  "Option Field", HFILL } },
+		{ &hf_enttec_poll_reply_tos,
+			{ "TOS", "enttec.poll_reply.tos",
+			  FT_UINT8, BASE_HEX, NULL, 0x0,
+			  "TOS", HFILL } },
+		{ &hf_enttec_poll_reply_ttl,
+			{ "TTL", "enttec.poll_reply.ttl",
+			  FT_UINT8, BASE_DEC, NULL, 0x0,
+			  "TTL", HFILL } },
+		{ &hf_enttec_dmx_data_universe,
+			{ "Universe", "enttec.dmx_data.universe",
+			  FT_UINT8, BASE_DEC, NULL, 0x0,
+			  "Universe", HFILL } },
+		{ &hf_enttec_dmx_data_start_code,
+			{ "Start Code", "enttec.dmx_data.start_code",
+			  FT_UINT8, BASE_DEC, NULL, 0x0,
+			  "Start Code", HFILL } },
+		{ &hf_enttec_dmx_data_type,
+			{ "Data Type", "enttec.dmx_data.type",
+			  FT_UINT8, BASE_HEX, VALS(enttec_data_type_vals), 0x0,
+			  "Data Type", HFILL } },
+		{ &hf_enttec_dmx_data_size,
+			{ "Data Size", "enttec.dmx_data.size",
+			  FT_UINT16, BASE_DEC, NULL, 0x0,
+			  "Data Size", HFILL } },
+		{ &hf_enttec_dmx_data_data,
+			{ "DMX Data", "enttec.dmx_data.data",
+			  FT_NONE, BASE_DEC, NULL, 0x0,
+			  "DMX Data", HFILL } },
+		{ &hf_enttec_dmx_data_data_filter,
+			{ "DMX Data", "enttec.dmx_data.data_filter",
+			  FT_BYTES, BASE_DEC, NULL, 0x0,
+			  "DMX Data", HFILL } },
+		{ &hf_enttec_dmx_data_dmx_data,
+			{ "DMX Data", "enttec.dmx_data.dmx_data",
+			  FT_NONE, BASE_DEC, NULL, 0x0,
+			  "DMX Data", HFILL } },
+		{ &hf_enttec_poll_type,
+			{ "Reply Type", "enttec.poll.reply_type",
+			  FT_UINT8, BASE_DEC, NULL, 0x0,
+			  "Reply Type", HFILL } }
+	};
 
-    /* General */
+	static gint *ett[] = {
+		&ett_enttec,
+	};
 
-    { &hf_enttec_head,
-      { "Head",
-        "enttec.head",
-        FT_STRING, BASE_HEX, NULL, 0x0,
-        "Head", HFILL }}
-  };
+	module_t *enttec_module;
 
-  static gint *ett[] = {
-    &ett_enttec,
-  };
+	static enum_val_t disp_chan_val_types[] = {
+		{ "pro", "Percent", 0 },
+		{ "hex", "Hexadecimal", 1 },
+		{ "dec", "Decimal", 2 },
+		{ NULL, NULL, 0 }
+	};
 
-  module_t *enttec_module;
+	static enum_val_t disp_chan_nr_types[] = {
+		{ "hex", "Hexadecimal", 0 },
+		{ "dec", "Decimal", 1 },
+		{ NULL, NULL, 0 }
+	};
 
-  proto_enttec = proto_register_protocol("ENTTEC",
-				       "ENTTEC","enttec");
-  proto_register_field_array(proto_enttec,hf,array_length(hf));
-  proto_register_subtree_array(ett,array_length(ett));
+	static enum_val_t col_count[] = {
+		{ "6", "6", 6 },
+		{ "10", "10", 10 },
+		{ "12", "12", 12 },
+		{ "16", "16", 16 },
+		{ "24", "24", 24 },
+		{ NULL, NULL, 0 }
+	};
 
-  enttec_module = prefs_register_protocol(proto_enttec,
-					proto_reg_handoff_enttec);
-  prefs_register_uint_preference(enttec_module, "udp_port",
-				 "ENTTEC UDP Port",
-				 "The UDP port on which "
-				 "ENTTEC "
-				 "packets will be sent",
-				 10,&global_udp_port_enttec);
+	proto_enttec = proto_register_protocol("ENTTEC", "ENTTEC","enttec");
+	proto_register_field_array(proto_enttec,hf,array_length(hf));
+	proto_register_subtree_array(ett,array_length(ett));
 
+	enttec_module = prefs_register_protocol(proto_enttec,
+						proto_reg_handoff_enttec);
+	prefs_register_uint_preference(enttec_module, "udp_port",
+					"ENTTEC UDP Port",
+					"The UDP port on which ENTTEC packets will be sent",
+					10,&global_udp_port_enttec);
+
+	prefs_register_uint_preference(enttec_module, "tcp_port",
+					"ENTTEC TCP Port",
+					"The TCP port on which ENTTEC packets will be sent",
+					10,&global_tcp_port_enttec);
+
+	prefs_register_enum_preference(enttec_module, "dmx_disp_chan_val_type",
+				"DMX Display channel value type",
+				"The way DMX values are displayed",
+				&global_disp_chan_val_type,
+				disp_chan_val_types, FALSE);
+
+	prefs_register_enum_preference(enttec_module, "dmx_disp_chan_nr_type",
+				"DMX Display channel nr. type",
+				"The way DMX channel numbers are displayed",
+				&global_disp_chan_nr_type,
+				disp_chan_nr_types, FALSE);
+
+	prefs_register_enum_preference(enttec_module, "dmx_disp_col_count",
+				"DMX Display Column Count",
+				"The number of columns for the DMX display",
+				&global_disp_col_count,
+				col_count, FALSE);
 }
 
 /* The registration hand-off routing */
-
 void
 proto_reg_handoff_enttec(void) {
-  static int enttec_initialized = FALSE;
-  static dissector_handle_t enttec_handle;
+	static int enttec_initialized = FALSE;
+	static dissector_handle_t enttec_handle;
 
-  ip_handle = find_dissector("ip");
-  rdm_handle = find_dissector("rdm");
+	ip_handle = find_dissector("ip");
+	rdm_handle = find_dissector("rdm");
 
 
-  if(!enttec_initialized) {
-    enttec_handle = create_dissector_handle(dissect_enttec,proto_enttec);
-    enttec_initialized = TRUE;
-  } else {
-    dissector_delete("udp.port",udp_port_enttec,enttec_handle);
-  }
+	if(!enttec_initialized) {
+		enttec_handle = create_dissector_handle(dissect_enttec,proto_enttec);
+		enttec_initialized = TRUE;
+	} else {
+		dissector_delete("udp.port",udp_port_enttec,enttec_handle);
+		dissector_delete("tcp.port",tcp_port_enttec,enttec_handle);
+	}
 
-  udp_port_enttec = global_udp_port_enttec;
-  
-  dissector_add("udp.port",global_udp_port_enttec,enttec_handle);
+	udp_port_enttec = global_udp_port_enttec;
+	tcp_port_enttec = global_tcp_port_enttec;  
+
+	dissector_add("udp.port",global_udp_port_enttec,enttec_handle);
+	dissector_add("tcp.port",global_tcp_port_enttec,enttec_handle);
 }
 
 /* Start the functions we need for the plugin stuff */
@@ -178,7 +592,7 @@
 
 G_MODULE_EXPORT void
 plugin_reg_handoff(void){
-  proto_reg_handoff_enttec();
+	proto_reg_handoff_enttec();
 }
 
 G_MODULE_EXPORT void
@@ -187,12 +601,12 @@
 _U_
 #endif
 ){
-  /* initialise the table of pointers needed in Win32 DLLs */
-  plugin_address_table_init(pat);
-  /* register the new protocol, protocol fields, and subtrees */
-  if (proto_enttec == -1) { /* execute protocol initialization only once */
-    proto_register_enttec();
-  }
+	/* initialise the table of pointers needed in Win32 DLLs */
+	plugin_address_table_init(pat);
+	/* register the new protocol, protocol fields, and subtrees */
+	if (proto_enttec == -1) { /* execute protocol initialization only once */
+		proto_register_enttec();
+	}
 }
 
 #endif