print-tipc.c - platform/external/tcpdump - Git at Google

 /*
  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that: (1) source code distributions
  * retain the above copyright notice and this paragraph in its entirety, (2)
  * distributions including binary code include the above copyright notice and
  * this paragraph in its entirety in the documentation or other materials
  * provided with the distribution, and (3) all advertising materials mentioning
  * features or use of this software display the following acknowledgement:
  * ``This product includes software developed by the University of California,
  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  * the University nor the names of its contributors may be used to endorse
  * or promote products derived from this software without specific prior
  * written permission.
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */

 /* \summary: Transparent Inter-Process Communication (TIPC) protocol printer */

 /*
  * specification:
  *	http://tipc.sourceforge.net/doc/draft-spec-tipc-07.html
  *	http://tipc.sourceforge.net/doc/tipc_message_formats.html
  */

 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif

 #include "netdissect-stdinc.h"

 #include "netdissect.h"
 #include "ethertype.h"
 #include "extract.h"


 #define TIPC_USER_LOW_IMPORTANCE	0
 #define TIPC_USER_MEDIUM_IMPORTANCE	1
 #define TIPC_USER_HIGH_IMPORTANCE	2
 #define TIPC_USER_CRITICAL_IMPORTANCE	3
 #define TIPC_USER_BCAST_PROTOCOL	5
 #define TIPC_USER_MSG_BUNDLER		6
 #define TIPC_USER_LINK_PROTOCOL		7
 #define TIPC_USER_CONN_MANAGER		8
 #define TIPC_USER_CHANGEOVER_PROTOCOL	10
 #define TIPC_USER_NAME_DISTRIBUTOR	11
 #define TIPC_USER_MSG_FRAGMENTER	12
 #define TIPC_USER_LINK_CONFIG		13

 #define TIPC_CONN_MSG			0
 #define TIPC_DIRECT_MSG			1
 #define TIPC_NAMED_MSG			2
 #define TIPC_MCAST_MSG			3

 #define TIPC_ZONE(addr)		(((addr) >> 24) & 0xFF)
 #define TIPC_CLUSTER(addr)	(((addr) >> 12) & 0xFFF)
 #define TIPC_NODE(addr)		(((addr) >> 0) & 0xFFF)

 struct tipc_pkthdr {
 	nd_uint32_t w0;
 	nd_uint32_t w1;
 };

 #define TIPC_VER(w0)		(((w0) >> 29) & 0x07)
 #define TIPC_USER(w0)		(((w0) >> 25) & 0x0F)
 #define TIPC_HSIZE(w0)		(((w0) >> 21) & 0x0F)
 #define TIPC_MSIZE(w0)		(((w0) >> 0) & 0xFFFF)
 #define TIPC_MTYPE(w1)		(((w1) >> 29) & 0x07)
 #define TIPC_BROADCAST_ACK(w1)	(((w1) >> 0) & 0xFFFF)
 #define TIPC_LINK_ACK(w2)	(((w2) >> 16) & 0xFFFF)
 #define TIPC_LINK_SEQ(w2)	(((w2) >> 0) & 0xFFFF)

 static const struct tok tipcuser_values[] = {
     { TIPC_USER_LOW_IMPORTANCE,      "Low Importance Data payload" },
     { TIPC_USER_MEDIUM_IMPORTANCE,   "Medium Importance Data payload" },
     { TIPC_USER_HIGH_IMPORTANCE,     "High Importance Data payload" },
     { TIPC_USER_CRITICAL_IMPORTANCE, "Critical Importance Data payload" },
     { TIPC_USER_BCAST_PROTOCOL,      "Broadcast Link Protocol internal" },
     { TIPC_USER_MSG_BUNDLER,         "Message Bundler Protocol internal" },
     { TIPC_USER_LINK_PROTOCOL,       "Link State Protocol internal" },
     { TIPC_USER_CONN_MANAGER,        "Connection Manager internal" },
     { TIPC_USER_CHANGEOVER_PROTOCOL, "Link Changeover Protocol internal" },
     { TIPC_USER_NAME_DISTRIBUTOR,    "Name Table Update Protocol internal" },
     { TIPC_USER_MSG_FRAGMENTER,      "Message Fragmentation Protocol internal" },
     { TIPC_USER_LINK_CONFIG,         "Neighbor Detection Protocol internal" },
     { 0, NULL }
 };

 static const struct tok tipcmtype_values[] = {
     { TIPC_CONN_MSG,   "CONN_MSG" },
     { TIPC_DIRECT_MSG, "MCAST_MSG" },
     { TIPC_NAMED_MSG,  "NAMED_MSG" },
     { TIPC_MCAST_MSG,  "DIRECT_MSG" },
     { 0, NULL }
 };

 static const struct tok tipc_linkconf_mtype_values[] = {
     { 0,   "Link request" },
     { 1,   "Link response" },
     { 0, NULL }
 };

 struct payload_tipc_pkthdr {
 	nd_uint32_t w0;
 	nd_uint32_t w1;
 	nd_uint32_t w2;
 	nd_uint32_t prev_node;
 	nd_uint32_t orig_port;
 	nd_uint32_t dest_port;
 	nd_uint32_t orig_node;
 	nd_uint32_t dest_node;
 	nd_uint32_t name_type;
 	nd_uint32_t w9;
 	nd_uint32_t wA;
 };

 struct  internal_tipc_pkthdr {
 	nd_uint32_t w0;
 	nd_uint32_t w1;
 	nd_uint32_t w2;
 	nd_uint32_t prev_node;
 	nd_uint32_t w4;
 	nd_uint32_t w5;
 	nd_uint32_t orig_node;
 	nd_uint32_t dest_node;
 	nd_uint32_t trans_seq;
 	nd_uint32_t w9;
 };

 #define TIPC_SEQ_GAP(w1)	(((w1) >> 16) & 0x1FFF)
 #define TIPC_BC_GAP_AFTER(w2)	(((w2) >> 16) & 0xFFFF)
 #define TIPC_BC_GAP_TO(w2)	(((w2) >> 0) & 0xFFFF)
 #define TIPC_LAST_SENT_FRAG(w4)	(((w4) >> 16) & 0xFFFF)
 #define TIPC_NEXT_SENT_FRAG(w4)	(((w4) >> 0) & 0xFFFF)
 #define TIPC_SESS_NO(w5)	(((w5) >> 16) & 0xFFFF)
 #define TIPC_MSG_CNT(w9)	(((w9) >> 16) & 0xFFFF)
 #define TIPC_LINK_TOL(w9)	(((w9) >> 0) & 0xFFFF)

 struct link_conf_tipc_pkthdr {
 	nd_uint32_t w0;
 	nd_uint32_t w1;
 	nd_uint32_t dest_domain;
 	nd_uint32_t prev_node;
 	nd_uint32_t ntwrk_id;
 	nd_uint32_t w5;
 	nd_byte     media_address[16];
 };

 #define TIPC_NODE_SIG(w1)	(((w1) >> 0) & 0xFFFF)
 #define TIPC_MEDIA_ID(w5)	(((w5) >> 0) & 0xFF)

 static void
 print_payload(netdissect_options *ndo, const struct payload_tipc_pkthdr *ap)
 {
 	uint32_t w0, w1, w2;
 	u_int user;
 	u_int hsize;
 	u_int msize;
 	u_int mtype;
 	u_int broadcast_ack;
 	u_int link_ack;
 	u_int link_seq;
 	u_int prev_node;
 	u_int orig_port;
 	u_int dest_port;
 	u_int orig_node;
 	u_int dest_node;

 	ND_TCHECK_4(ap->dest_port);
 	w0 = EXTRACT_BE_U_4(ap->w0);
 	user = TIPC_USER(w0);
 	hsize = TIPC_HSIZE(w0);
 	msize = TIPC_MSIZE(w0);
 	w1 = EXTRACT_BE_U_4(ap->w1);
 	mtype = TIPC_MTYPE(w1);
 	prev_node = EXTRACT_BE_U_4(ap->prev_node);
 	orig_port = EXTRACT_BE_U_4(ap->orig_port);
 	dest_port = EXTRACT_BE_U_4(ap->dest_port);
 	if (hsize <= 6) {
 		ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 		    TIPC_VER(w0),
 		    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 		    orig_port, dest_port,
 		    hsize*4, msize,
 		    tok2str(tipcuser_values, "unknown", user),
 		    tok2str(tipcmtype_values, "Unknown", mtype));
 	} else {
 		ND_TCHECK_4(ap->dest_node);
 		orig_node = EXTRACT_BE_U_4(ap->orig_node);
 		dest_node = EXTRACT_BE_U_4(ap->dest_node);
 		ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u.%u.%u:%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 		    TIPC_VER(w0),
 		    TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
 		    orig_port,
 		    TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
 		    dest_port,
 		    hsize*4, msize,
 		    tok2str(tipcuser_values, "unknown", user),
 		    tok2str(tipcmtype_values, "Unknown", mtype));

 		if (ndo->ndo_vflag) {
 			broadcast_ack = TIPC_BROADCAST_ACK(w1);
 			w2 = EXTRACT_BE_U_4(ap->w2);
 			link_ack = TIPC_LINK_ACK(w2);
 			link_seq = TIPC_LINK_SEQ(w2);
 			ND_PRINT("\n\tPrevious Node %u.%u.%u, Broadcast Ack %u, Link Ack %u, Link Sequence %u",
 			    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 			    broadcast_ack, link_ack, link_seq);
 		}
 	}
 	return;

 trunc:
 	nd_print_trunc(ndo);
 }

 static void
 print_internal(netdissect_options *ndo, const struct internal_tipc_pkthdr *ap)
 {
 	uint32_t w0, w1, w2, w4, w5, w9;
 	u_int user;
 	u_int hsize;
 	u_int msize;
 	u_int mtype;
 	u_int seq_gap;
 	u_int broadcast_ack;
 	u_int bc_gap_after;
 	u_int bc_gap_to;
 	u_int prev_node;
 	u_int last_sent_frag;
 	u_int next_sent_frag;
 	u_int sess_no;
 	u_int orig_node;
 	u_int dest_node;
 	u_int trans_seq;
 	u_int msg_cnt;
 	u_int link_tol;

 	ND_TCHECK_4(ap->dest_node);
 	w0 = EXTRACT_BE_U_4(ap->w0);
 	user = TIPC_USER(w0);
 	hsize = TIPC_HSIZE(w0);
 	msize = TIPC_MSIZE(w0);
 	w1 = EXTRACT_BE_U_4(ap->w1);
 	mtype = TIPC_MTYPE(w1);
 	orig_node = EXTRACT_BE_U_4(ap->orig_node);
 	dest_node = EXTRACT_BE_U_4(ap->dest_node);
 	ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s (0x%08x)",
 	    TIPC_VER(w0),
 	    TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
 	    TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
 	    hsize*4, msize,
 	    tok2str(tipcuser_values, "unknown", user),
 	    tok2str(tipcmtype_values, "Unknown", mtype), w1);

 	if (ndo->ndo_vflag) {
 		ND_TCHECK_SIZE(ap);
 		seq_gap = TIPC_SEQ_GAP(w1);
 		broadcast_ack = TIPC_BROADCAST_ACK(w1);
 		w2 = EXTRACT_BE_U_4(ap->w2);
 		bc_gap_after = TIPC_BC_GAP_AFTER(w2);
 		bc_gap_to = TIPC_BC_GAP_TO(w2);
 		prev_node = EXTRACT_BE_U_4(ap->prev_node);
 		w4 = EXTRACT_BE_U_4(ap->w4);
 		last_sent_frag = TIPC_LAST_SENT_FRAG(w4);
 		next_sent_frag = TIPC_NEXT_SENT_FRAG(w4);
 		w5 = EXTRACT_BE_U_4(ap->w5);
 		sess_no = TIPC_SESS_NO(w5);
 		trans_seq = EXTRACT_BE_U_4(ap->trans_seq);
 		w9 = EXTRACT_BE_U_4(ap->w9);
 		msg_cnt = TIPC_MSG_CNT(w9);
 		link_tol = TIPC_LINK_TOL(w9);
 		ND_PRINT("\n\tPrevious Node %u.%u.%u, Session No. %u, Broadcast Ack %u, Sequence Gap %u,  Broadcast Gap After %u, Broadcast Gap To %u, Last Sent Packet No. %u, Next sent Packet No. %u, Transport Sequence %u, msg_count %u, Link Tolerance %u",
 		    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 		    sess_no, broadcast_ack, seq_gap, bc_gap_after, bc_gap_to,
 		    last_sent_frag, next_sent_frag, trans_seq, msg_cnt,
 		    link_tol);
 	}
 	return;

 trunc:
 	nd_print_trunc(ndo);
 }

 static void
 print_link_conf(netdissect_options *ndo, const struct link_conf_tipc_pkthdr *ap)
 {
 	uint32_t w0, w1, w5;
 	u_int user;
 	u_int hsize;
 	u_int msize;
 	u_int mtype;
 	u_int node_sig;
 	u_int prev_node;
 	u_int dest_domain;
 	u_int ntwrk_id;
 	u_int media_id;

 	ND_TCHECK_4(ap->prev_node);
 	w0 = EXTRACT_BE_U_4(ap->w0);
 	user = TIPC_USER(w0);
 	hsize = TIPC_HSIZE(w0);
 	msize = TIPC_MSIZE(w0);
 	w1 = EXTRACT_BE_U_4(ap->w1);
 	mtype = TIPC_MTYPE(w1);
 	dest_domain = EXTRACT_BE_U_4(ap->dest_domain);
 	prev_node = EXTRACT_BE_U_4(ap->prev_node);

 	ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
 	    TIPC_VER(w0),
 	    TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
 	    TIPC_ZONE(dest_domain), TIPC_CLUSTER(dest_domain), TIPC_NODE(dest_domain),
 	    hsize*4, msize,
 	    tok2str(tipcuser_values, "unknown", user),
 	    tok2str(tipc_linkconf_mtype_values, "Unknown", mtype));
 	if (ndo->ndo_vflag) {
 		ND_TCHECK_4(ap->w5);
 		node_sig = TIPC_NODE_SIG(w1);
 		ntwrk_id = EXTRACT_BE_U_4(ap->ntwrk_id);
 		w5 = EXTRACT_BE_U_4(ap->w5);
 		media_id = TIPC_MEDIA_ID(w5);
 		ND_PRINT("\n\tNodeSignature %u, network_id %u, media_id %u",
 		    node_sig, ntwrk_id, media_id);
 	}
 	return;

 trunc:
 	nd_print_trunc(ndo);
 }

 void
 tipc_print(netdissect_options *ndo, const u_char *bp, u_int length _U_,
     u_int caplen _U_)
 {
 	const struct tipc_pkthdr *ap;
 	uint32_t w0;
 	u_int user;

 	ndo->ndo_protocol = "tipc";
 	ap = (const struct tipc_pkthdr *)bp;
 	ND_TCHECK_4(ap->w0);
 	w0 = EXTRACT_BE_U_4(ap->w0);
 	user = TIPC_USER(w0);

 	switch (user)
 	{
 		case TIPC_USER_LOW_IMPORTANCE:
 		case TIPC_USER_MEDIUM_IMPORTANCE:
 		case TIPC_USER_HIGH_IMPORTANCE:
 		case TIPC_USER_CRITICAL_IMPORTANCE:
 		case TIPC_USER_NAME_DISTRIBUTOR:
 		case TIPC_USER_CONN_MANAGER:
 			print_payload(ndo, (const struct payload_tipc_pkthdr *)bp);
 			break;

 		case TIPC_USER_LINK_CONFIG:
 			print_link_conf(ndo, (const struct link_conf_tipc_pkthdr *)bp);
 			break;

 		case TIPC_USER_BCAST_PROTOCOL:
 		case TIPC_USER_MSG_BUNDLER:
 		case TIPC_USER_LINK_PROTOCOL:
 		case TIPC_USER_CHANGEOVER_PROTOCOL:
 		case TIPC_USER_MSG_FRAGMENTER:
 			print_internal(ndo, (const struct internal_tipc_pkthdr *)bp);
 			break;

 	}
 	return;

 trunc:
 	nd_print_trunc(ndo);
 }
	/*
	* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
	* The Regents of the University of California. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that: (1) source code distributions
	* retain the above copyright notice and this paragraph in its entirety, (2)
	* distributions including binary code include the above copyright notice and
	* this paragraph in its entirety in the documentation or other materials
	* provided with the distribution, and (3) all advertising materials mentioning
	* features or use of this software display the following acknowledgement:
	* ``This product includes software developed by the University of California,
	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	* the University nor the names of its contributors may be used to endorse
	* or promote products derived from this software without specific prior
	* written permission.
	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	*/

	/* \summary: Transparent Inter-Process Communication (TIPC) protocol printer */

	/*
	* specification:
	* http://tipc.sourceforge.net/doc/draft-spec-tipc-07.html
	* http://tipc.sourceforge.net/doc/tipc_message_formats.html
	*/

	#ifdef HAVE_CONFIG_H
	#include <config.h>
	#endif

	#include "netdissect-stdinc.h"

	#include "netdissect.h"
	#include "ethertype.h"
	#include "extract.h"


	#define TIPC_USER_LOW_IMPORTANCE 0
	#define TIPC_USER_MEDIUM_IMPORTANCE 1
	#define TIPC_USER_HIGH_IMPORTANCE 2
	#define TIPC_USER_CRITICAL_IMPORTANCE 3
	#define TIPC_USER_BCAST_PROTOCOL 5
	#define TIPC_USER_MSG_BUNDLER 6
	#define TIPC_USER_LINK_PROTOCOL 7
	#define TIPC_USER_CONN_MANAGER 8
	#define TIPC_USER_CHANGEOVER_PROTOCOL 10
	#define TIPC_USER_NAME_DISTRIBUTOR 11
	#define TIPC_USER_MSG_FRAGMENTER 12
	#define TIPC_USER_LINK_CONFIG 13

	#define TIPC_CONN_MSG 0
	#define TIPC_DIRECT_MSG 1
	#define TIPC_NAMED_MSG 2
	#define TIPC_MCAST_MSG 3

	#define TIPC_ZONE(addr) (((addr) >> 24) & 0xFF)
	#define TIPC_CLUSTER(addr) (((addr) >> 12) & 0xFFF)
	#define TIPC_NODE(addr) (((addr) >> 0) & 0xFFF)

	struct tipc_pkthdr {
	nd_uint32_t w0;
	nd_uint32_t w1;
	};

	#define TIPC_VER(w0) (((w0) >> 29) & 0x07)
	#define TIPC_USER(w0) (((w0) >> 25) & 0x0F)
	#define TIPC_HSIZE(w0) (((w0) >> 21) & 0x0F)
	#define TIPC_MSIZE(w0) (((w0) >> 0) & 0xFFFF)
	#define TIPC_MTYPE(w1) (((w1) >> 29) & 0x07)
	#define TIPC_BROADCAST_ACK(w1) (((w1) >> 0) & 0xFFFF)
	#define TIPC_LINK_ACK(w2) (((w2) >> 16) & 0xFFFF)
	#define TIPC_LINK_SEQ(w2) (((w2) >> 0) & 0xFFFF)

	static const struct tok tipcuser_values[] = {
	{ TIPC_USER_LOW_IMPORTANCE, "Low Importance Data payload" },
	{ TIPC_USER_MEDIUM_IMPORTANCE, "Medium Importance Data payload" },
	{ TIPC_USER_HIGH_IMPORTANCE, "High Importance Data payload" },
	{ TIPC_USER_CRITICAL_IMPORTANCE, "Critical Importance Data payload" },
	{ TIPC_USER_BCAST_PROTOCOL, "Broadcast Link Protocol internal" },
	{ TIPC_USER_MSG_BUNDLER, "Message Bundler Protocol internal" },
	{ TIPC_USER_LINK_PROTOCOL, "Link State Protocol internal" },
	{ TIPC_USER_CONN_MANAGER, "Connection Manager internal" },
	{ TIPC_USER_CHANGEOVER_PROTOCOL, "Link Changeover Protocol internal" },
	{ TIPC_USER_NAME_DISTRIBUTOR, "Name Table Update Protocol internal" },
	{ TIPC_USER_MSG_FRAGMENTER, "Message Fragmentation Protocol internal" },
	{ TIPC_USER_LINK_CONFIG, "Neighbor Detection Protocol internal" },
	{ 0, NULL }
	};

	static const struct tok tipcmtype_values[] = {
	{ TIPC_CONN_MSG, "CONN_MSG" },
	{ TIPC_DIRECT_MSG, "MCAST_MSG" },
	{ TIPC_NAMED_MSG, "NAMED_MSG" },
	{ TIPC_MCAST_MSG, "DIRECT_MSG" },
	{ 0, NULL }
	};

	static const struct tok tipc_linkconf_mtype_values[] = {
	{ 0, "Link request" },
	{ 1, "Link response" },
	{ 0, NULL }
	};

	struct payload_tipc_pkthdr {
	nd_uint32_t w0;
	nd_uint32_t w1;
	nd_uint32_t w2;
	nd_uint32_t prev_node;
	nd_uint32_t orig_port;
	nd_uint32_t dest_port;
	nd_uint32_t orig_node;
	nd_uint32_t dest_node;
	nd_uint32_t name_type;
	nd_uint32_t w9;
	nd_uint32_t wA;
	};

	struct internal_tipc_pkthdr {
	nd_uint32_t w0;
	nd_uint32_t w1;
	nd_uint32_t w2;
	nd_uint32_t prev_node;
	nd_uint32_t w4;
	nd_uint32_t w5;
	nd_uint32_t orig_node;
	nd_uint32_t dest_node;
	nd_uint32_t trans_seq;
	nd_uint32_t w9;
	};

	#define TIPC_SEQ_GAP(w1) (((w1) >> 16) & 0x1FFF)
	#define TIPC_BC_GAP_AFTER(w2) (((w2) >> 16) & 0xFFFF)
	#define TIPC_BC_GAP_TO(w2) (((w2) >> 0) & 0xFFFF)
	#define TIPC_LAST_SENT_FRAG(w4) (((w4) >> 16) & 0xFFFF)
	#define TIPC_NEXT_SENT_FRAG(w4) (((w4) >> 0) & 0xFFFF)
	#define TIPC_SESS_NO(w5) (((w5) >> 16) & 0xFFFF)
	#define TIPC_MSG_CNT(w9) (((w9) >> 16) & 0xFFFF)
	#define TIPC_LINK_TOL(w9) (((w9) >> 0) & 0xFFFF)

	struct link_conf_tipc_pkthdr {
	nd_uint32_t w0;
	nd_uint32_t w1;
	nd_uint32_t dest_domain;
	nd_uint32_t prev_node;
	nd_uint32_t ntwrk_id;
	nd_uint32_t w5;
	nd_byte media_address[16];
	};

	#define TIPC_NODE_SIG(w1) (((w1) >> 0) & 0xFFFF)
	#define TIPC_MEDIA_ID(w5) (((w5) >> 0) & 0xFF)

	static void
	print_payload(netdissect_options ndo, const struct payload_tipc_pkthdr ap)
	{
	uint32_t w0, w1, w2;
	u_int user;
	u_int hsize;
	u_int msize;
	u_int mtype;
	u_int broadcast_ack;
	u_int link_ack;
	u_int link_seq;
	u_int prev_node;
	u_int orig_port;
	u_int dest_port;
	u_int orig_node;
	u_int dest_node;

	ND_TCHECK_4(ap->dest_port);
	w0 = EXTRACT_BE_U_4(ap->w0);
	user = TIPC_USER(w0);
	hsize = TIPC_HSIZE(w0);
	msize = TIPC_MSIZE(w0);
	w1 = EXTRACT_BE_U_4(ap->w1);
	mtype = TIPC_MTYPE(w1);
	prev_node = EXTRACT_BE_U_4(ap->prev_node);
	orig_port = EXTRACT_BE_U_4(ap->orig_port);
	dest_port = EXTRACT_BE_U_4(ap->dest_port);
	if (hsize <= 6) {
	ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
	TIPC_VER(w0),
	TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
	orig_port, dest_port,
	hsize*4, msize,
	tok2str(tipcuser_values, "unknown", user),
	tok2str(tipcmtype_values, "Unknown", mtype));
	} else {
	ND_TCHECK_4(ap->dest_node);
	orig_node = EXTRACT_BE_U_4(ap->orig_node);
	dest_node = EXTRACT_BE_U_4(ap->dest_node);
	ND_PRINT("TIPC v%u.0 %u.%u.%u:%u > %u.%u.%u:%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
	TIPC_VER(w0),
	TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
	orig_port,
	TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
	dest_port,
	hsize*4, msize,
	tok2str(tipcuser_values, "unknown", user),
	tok2str(tipcmtype_values, "Unknown", mtype));

	if (ndo->ndo_vflag) {
	broadcast_ack = TIPC_BROADCAST_ACK(w1);
	w2 = EXTRACT_BE_U_4(ap->w2);
	link_ack = TIPC_LINK_ACK(w2);
	link_seq = TIPC_LINK_SEQ(w2);
	ND_PRINT("\n\tPrevious Node %u.%u.%u, Broadcast Ack %u, Link Ack %u, Link Sequence %u",
	TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
	broadcast_ack, link_ack, link_seq);
	}
	}
	return;

	trunc:
	nd_print_trunc(ndo);
	}

	static void
	print_internal(netdissect_options ndo, const struct internal_tipc_pkthdr ap)
	{
	uint32_t w0, w1, w2, w4, w5, w9;
	u_int user;
	u_int hsize;
	u_int msize;
	u_int mtype;
	u_int seq_gap;
	u_int broadcast_ack;
	u_int bc_gap_after;
	u_int bc_gap_to;
	u_int prev_node;
	u_int last_sent_frag;
	u_int next_sent_frag;
	u_int sess_no;
	u_int orig_node;
	u_int dest_node;
	u_int trans_seq;
	u_int msg_cnt;
	u_int link_tol;

	ND_TCHECK_4(ap->dest_node);
	w0 = EXTRACT_BE_U_4(ap->w0);
	user = TIPC_USER(w0);
	hsize = TIPC_HSIZE(w0);
	msize = TIPC_MSIZE(w0);
	w1 = EXTRACT_BE_U_4(ap->w1);
	mtype = TIPC_MTYPE(w1);
	orig_node = EXTRACT_BE_U_4(ap->orig_node);
	dest_node = EXTRACT_BE_U_4(ap->dest_node);
	ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s (0x%08x)",
	TIPC_VER(w0),
	TIPC_ZONE(orig_node), TIPC_CLUSTER(orig_node), TIPC_NODE(orig_node),
	TIPC_ZONE(dest_node), TIPC_CLUSTER(dest_node), TIPC_NODE(dest_node),
	hsize*4, msize,
	tok2str(tipcuser_values, "unknown", user),
	tok2str(tipcmtype_values, "Unknown", mtype), w1);

	if (ndo->ndo_vflag) {
	ND_TCHECK_SIZE(ap);
	seq_gap = TIPC_SEQ_GAP(w1);
	broadcast_ack = TIPC_BROADCAST_ACK(w1);
	w2 = EXTRACT_BE_U_4(ap->w2);
	bc_gap_after = TIPC_BC_GAP_AFTER(w2);
	bc_gap_to = TIPC_BC_GAP_TO(w2);
	prev_node = EXTRACT_BE_U_4(ap->prev_node);
	w4 = EXTRACT_BE_U_4(ap->w4);
	last_sent_frag = TIPC_LAST_SENT_FRAG(w4);
	next_sent_frag = TIPC_NEXT_SENT_FRAG(w4);
	w5 = EXTRACT_BE_U_4(ap->w5);
	sess_no = TIPC_SESS_NO(w5);
	trans_seq = EXTRACT_BE_U_4(ap->trans_seq);
	w9 = EXTRACT_BE_U_4(ap->w9);
	msg_cnt = TIPC_MSG_CNT(w9);
	link_tol = TIPC_LINK_TOL(w9);
	ND_PRINT("\n\tPrevious Node %u.%u.%u, Session No. %u, Broadcast Ack %u, Sequence Gap %u, Broadcast Gap After %u, Broadcast Gap To %u, Last Sent Packet No. %u, Next sent Packet No. %u, Transport Sequence %u, msg_count %u, Link Tolerance %u",
	TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
	sess_no, broadcast_ack, seq_gap, bc_gap_after, bc_gap_to,
	last_sent_frag, next_sent_frag, trans_seq, msg_cnt,
	link_tol);
	}
	return;

	trunc:
	nd_print_trunc(ndo);
	}

	static void
	print_link_conf(netdissect_options ndo, const struct link_conf_tipc_pkthdr ap)
	{
	uint32_t w0, w1, w5;
	u_int user;
	u_int hsize;
	u_int msize;
	u_int mtype;
	u_int node_sig;
	u_int prev_node;
	u_int dest_domain;
	u_int ntwrk_id;
	u_int media_id;

	ND_TCHECK_4(ap->prev_node);
	w0 = EXTRACT_BE_U_4(ap->w0);
	user = TIPC_USER(w0);
	hsize = TIPC_HSIZE(w0);
	msize = TIPC_MSIZE(w0);
	w1 = EXTRACT_BE_U_4(ap->w1);
	mtype = TIPC_MTYPE(w1);
	dest_domain = EXTRACT_BE_U_4(ap->dest_domain);
	prev_node = EXTRACT_BE_U_4(ap->prev_node);

	ND_PRINT("TIPC v%u.0 %u.%u.%u > %u.%u.%u, headerlength %u bytes, MessageSize %u bytes, %s, messageType %s",
	TIPC_VER(w0),
	TIPC_ZONE(prev_node), TIPC_CLUSTER(prev_node), TIPC_NODE(prev_node),
	TIPC_ZONE(dest_domain), TIPC_CLUSTER(dest_domain), TIPC_NODE(dest_domain),
	hsize*4, msize,
	tok2str(tipcuser_values, "unknown", user),
	tok2str(tipc_linkconf_mtype_values, "Unknown", mtype));
	if (ndo->ndo_vflag) {
	ND_TCHECK_4(ap->w5);
	node_sig = TIPC_NODE_SIG(w1);
	ntwrk_id = EXTRACT_BE_U_4(ap->ntwrk_id);
	w5 = EXTRACT_BE_U_4(ap->w5);
	media_id = TIPC_MEDIA_ID(w5);
	ND_PRINT("\n\tNodeSignature %u, network_id %u, media_id %u",
	node_sig, ntwrk_id, media_id);
	}
	return;

	trunc:
	nd_print_trunc(ndo);
	}

	void
	tipc_print(netdissect_options ndo, const u_char bp, u_int length _U_,
	u_int caplen _U_)
	{
	const struct tipc_pkthdr *ap;
	uint32_t w0;
	u_int user;

	ndo->ndo_protocol = "tipc";
	ap = (const struct tipc_pkthdr *)bp;
	ND_TCHECK_4(ap->w0);
	w0 = EXTRACT_BE_U_4(ap->w0);
	user = TIPC_USER(w0);

	switch (user)
	{
	case TIPC_USER_LOW_IMPORTANCE:
	case TIPC_USER_MEDIUM_IMPORTANCE:
	case TIPC_USER_HIGH_IMPORTANCE:
	case TIPC_USER_CRITICAL_IMPORTANCE:
	case TIPC_USER_NAME_DISTRIBUTOR:
	case TIPC_USER_CONN_MANAGER:
	print_payload(ndo, (const struct payload_tipc_pkthdr *)bp);
	break;

	case TIPC_USER_LINK_CONFIG:
	print_link_conf(ndo, (const struct link_conf_tipc_pkthdr *)bp);
	break;

	case TIPC_USER_BCAST_PROTOCOL:
	case TIPC_USER_MSG_BUNDLER:
	case TIPC_USER_LINK_PROTOCOL:
	case TIPC_USER_CHANGEOVER_PROTOCOL:
	case TIPC_USER_MSG_FRAGMENTER:
	print_internal(ndo, (const struct internal_tipc_pkthdr *)bp);
	break;

	}
	return;

	trunc:
	nd_print_trunc(ndo);
	}