net/tipc/msg.c - kernel/msm-4.9 - Gitiles

 /*
  * net/tipc/msg.c: TIPC message header routines
  *
  * Copyright (c) 2000-2006, Ericsson AB
  * Copyright (c) 2005, 2010-2011, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the names of the copyright holders nor the names of its
  *    contributors may be used to endorse or promote products derived from
  *    this software without specific prior written permission.
  *
  * Alternatively, this software may be distributed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */

 #include "core.h"
 #include "msg.h"

 u32 tipc_msg_tot_importance(struct tipc_msg *m)
 {
 	if (likely(msg_isdata(m))) {
 		if (likely(msg_orignode(m) == tipc_own_addr))
 			return msg_importance(m);
 		return msg_importance(m) + 4;
 	}
 	if ((msg_user(m) == MSG_FRAGMENTER)  &&
 	    (msg_type(m) == FIRST_FRAGMENT))
 		return msg_importance(msg_get_wrapped(m));
 	return msg_importance(m);
 }


 void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
 			    u32 hsize, u32 destnode)
 {
 	memset(m, 0, hsize);
 	msg_set_version(m);
 	msg_set_user(m, user);
 	msg_set_hdr_sz(m, hsize);
 	msg_set_size(m, hsize);
 	msg_set_prevnode(m, tipc_own_addr);
 	msg_set_type(m, type);
 	if (!msg_short(m)) {
 		msg_set_orignode(m, tipc_own_addr);
 		msg_set_destnode(m, destnode);
 	}
 }

 /**
  * tipc_msg_calc_data_size - determine total data size for message
  */

 int tipc_msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect)
 {
 	int dsz = 0;
 	int i;

 	for (i = 0; i < num_sect; i++)
 		dsz += msg_sect[i].iov_len;
 	return dsz;
 }

 /**
  * tipc_msg_build - create message using specified header and data
  *
  * Note: Caller must not hold any locks in case copy_from_user() is interrupted!
  *
  * Returns message data size or errno
  */

 int tipc_msg_build(struct tipc_msg *hdr,
 			    struct iovec const *msg_sect, u32 num_sect,
 			    int max_size, int usrmem, struct sk_buff **buf)
 {
 	int dsz, sz, hsz, pos, res, cnt;

 	dsz = tipc_msg_calc_data_size(msg_sect, num_sect);
 	if (unlikely(dsz > TIPC_MAX_USER_MSG_SIZE)) {
 		*buf = NULL;
 		return -EINVAL;
 	}

 	pos = hsz = msg_hdr_sz(hdr);
 	sz = hsz + dsz;
 	msg_set_size(hdr, sz);
 	if (unlikely(sz > max_size)) {
 		*buf = NULL;
 		return dsz;
 	}

 	*buf = tipc_buf_acquire(sz);
 	if (!(*buf))
 		return -ENOMEM;
 	skb_copy_to_linear_data(*buf, hdr, hsz);
 	for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
 		if (likely(usrmem))
 			res = !copy_from_user((*buf)->data + pos,
 					      msg_sect[cnt].iov_base,
 					      msg_sect[cnt].iov_len);
 		else
 			skb_copy_to_linear_data_offset(*buf, pos,
 						       msg_sect[cnt].iov_base,
 						       msg_sect[cnt].iov_len);
 		pos += msg_sect[cnt].iov_len;
 	}
 	if (likely(res))
 		return dsz;

 	buf_discard(*buf);
 	*buf = NULL;
 	return -EFAULT;
 }

 #ifdef CONFIG_TIPC_DEBUG

 void tipc_msg_dbg(struct print_buf *buf, struct tipc_msg *msg, const char *str)
 {
 	u32 usr = msg_user(msg);
 	tipc_printf(buf, KERN_DEBUG);
 	tipc_printf(buf, str);

 	switch (usr) {
 	case MSG_BUNDLER:
 		tipc_printf(buf, "BNDL::");
 		tipc_printf(buf, "MSGS(%u):", msg_msgcnt(msg));
 		break;
 	case BCAST_PROTOCOL:
 		tipc_printf(buf, "BCASTP::");
 		break;
 	case MSG_FRAGMENTER:
 		tipc_printf(buf, "FRAGM::");
 		switch (msg_type(msg)) {
 		case FIRST_FRAGMENT:
 			tipc_printf(buf, "FIRST:");
 			break;
 		case FRAGMENT:
 			tipc_printf(buf, "BODY:");
 			break;
 		case LAST_FRAGMENT:
 			tipc_printf(buf, "LAST:");
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN:%x", msg_type(msg));

 		}
 		tipc_printf(buf, "NO(%u/%u):", msg_long_msgno(msg),
 			    msg_fragm_no(msg));
 		break;
 	case TIPC_LOW_IMPORTANCE:
 	case TIPC_MEDIUM_IMPORTANCE:
 	case TIPC_HIGH_IMPORTANCE:
 	case TIPC_CRITICAL_IMPORTANCE:
 		tipc_printf(buf, "DAT%u:", msg_user(msg));
 		if (msg_short(msg)) {
 			tipc_printf(buf, "CON:");
 			break;
 		}
 		switch (msg_type(msg)) {
 		case TIPC_CONN_MSG:
 			tipc_printf(buf, "CON:");
 			break;
 		case TIPC_MCAST_MSG:
 			tipc_printf(buf, "MCST:");
 			break;
 		case TIPC_NAMED_MSG:
 			tipc_printf(buf, "NAM:");
 			break;
 		case TIPC_DIRECT_MSG:
 			tipc_printf(buf, "DIR:");
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN TYPE %u", msg_type(msg));
 		}
 		if (msg_reroute_cnt(msg))
 			tipc_printf(buf, "REROUTED(%u):",
 				    msg_reroute_cnt(msg));
 		break;
 	case NAME_DISTRIBUTOR:
 		tipc_printf(buf, "NMD::");
 		switch (msg_type(msg)) {
 		case PUBLICATION:
 			tipc_printf(buf, "PUBL(%u):", (msg_size(msg) - msg_hdr_sz(msg)) / 20);	/* Items */
 			break;
 		case WITHDRAWAL:
 			tipc_printf(buf, "WDRW:");
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN:%x", msg_type(msg));
 		}
 		if (msg_reroute_cnt(msg))
 			tipc_printf(buf, "REROUTED(%u):",
 				    msg_reroute_cnt(msg));
 		break;
 	case CONN_MANAGER:
 		tipc_printf(buf, "CONN_MNG:");
 		switch (msg_type(msg)) {
 		case CONN_PROBE:
 			tipc_printf(buf, "PROBE:");
 			break;
 		case CONN_PROBE_REPLY:
 			tipc_printf(buf, "PROBE_REPLY:");
 			break;
 		case CONN_ACK:
 			tipc_printf(buf, "CONN_ACK:");
 			tipc_printf(buf, "ACK(%u):", msg_msgcnt(msg));
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN TYPE:%x", msg_type(msg));
 		}
 		if (msg_reroute_cnt(msg))
 			tipc_printf(buf, "REROUTED(%u):", msg_reroute_cnt(msg));
 		break;
 	case LINK_PROTOCOL:
 		switch (msg_type(msg)) {
 		case STATE_MSG:
 			tipc_printf(buf, "STATE:");
 			tipc_printf(buf, "%s:", msg_probe(msg) ? "PRB" : "");
 			tipc_printf(buf, "NXS(%u):", msg_next_sent(msg));
 			tipc_printf(buf, "GAP(%u):", msg_seq_gap(msg));
 			tipc_printf(buf, "LSTBC(%u):", msg_last_bcast(msg));
 			break;
 		case RESET_MSG:
 			tipc_printf(buf, "RESET:");
 			if (msg_size(msg) != msg_hdr_sz(msg))
 				tipc_printf(buf, "BEAR:%s:", msg_data(msg));
 			break;
 		case ACTIVATE_MSG:
 			tipc_printf(buf, "ACTIVATE:");
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN TYPE:%x", msg_type(msg));
 		}
 		tipc_printf(buf, "PLANE(%c):", msg_net_plane(msg));
 		tipc_printf(buf, "SESS(%u):", msg_session(msg));
 		break;
 	case CHANGEOVER_PROTOCOL:
 		tipc_printf(buf, "TUNL:");
 		switch (msg_type(msg)) {
 		case DUPLICATE_MSG:
 			tipc_printf(buf, "DUPL:");
 			break;
 		case ORIGINAL_MSG:
 			tipc_printf(buf, "ORIG:");
 			tipc_printf(buf, "EXP(%u)", msg_msgcnt(msg));
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN TYPE:%x", msg_type(msg));
 		}
 		break;
 	case LINK_CONFIG:
 		tipc_printf(buf, "CFG:");
 		switch (msg_type(msg)) {
 		case DSC_REQ_MSG:
 			tipc_printf(buf, "DSC_REQ:");
 			break;
 		case DSC_RESP_MSG:
 			tipc_printf(buf, "DSC_RESP:");
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN TYPE:%x:", msg_type(msg));
 			break;
 		}
 		break;
 	default:
 		tipc_printf(buf, "UNKNOWN USER:");
 	}

 	switch (usr) {
 	case CONN_MANAGER:
 	case TIPC_LOW_IMPORTANCE:
 	case TIPC_MEDIUM_IMPORTANCE:
 	case TIPC_HIGH_IMPORTANCE:
 	case TIPC_CRITICAL_IMPORTANCE:
 		switch (msg_errcode(msg)) {
 		case TIPC_OK:
 			break;
 		case TIPC_ERR_NO_NAME:
 			tipc_printf(buf, "NO_NAME:");
 			break;
 		case TIPC_ERR_NO_PORT:
 			tipc_printf(buf, "NO_PORT:");
 			break;
 		case TIPC_ERR_NO_NODE:
 			tipc_printf(buf, "NO_PROC:");
 			break;
 		case TIPC_ERR_OVERLOAD:
 			tipc_printf(buf, "OVERLOAD:");
 			break;
 		case TIPC_CONN_SHUTDOWN:
 			tipc_printf(buf, "SHUTDOWN:");
 			break;
 		default:
 			tipc_printf(buf, "UNKNOWN ERROR(%x):",
 				    msg_errcode(msg));
 		}
 	default:
 		break;
 	}

 	tipc_printf(buf, "HZ(%u):", msg_hdr_sz(msg));
 	tipc_printf(buf, "SZ(%u):", msg_size(msg));
 	tipc_printf(buf, "SQNO(%u):", msg_seqno(msg));

 	if (msg_non_seq(msg))
 		tipc_printf(buf, "NOSEQ:");
 	else
 		tipc_printf(buf, "ACK(%u):", msg_ack(msg));
 	tipc_printf(buf, "BACK(%u):", msg_bcast_ack(msg));
 	tipc_printf(buf, "PRND(%x)", msg_prevnode(msg));

 	if (msg_isdata(msg)) {
 		if (msg_named(msg)) {
 			tipc_printf(buf, "NTYP(%u):", msg_nametype(msg));
 			tipc_printf(buf, "NINST(%u)", msg_nameinst(msg));
 		}
 	}

 	if ((usr != LINK_PROTOCOL) && (usr != LINK_CONFIG) &&
 	    (usr != MSG_BUNDLER)) {
 		if (!msg_short(msg)) {
 			tipc_printf(buf, ":ORIG(%x:%u):",
 				    msg_orignode(msg), msg_origport(msg));
 			tipc_printf(buf, ":DEST(%x:%u):",
 				    msg_destnode(msg), msg_destport(msg));
 		} else {
 			tipc_printf(buf, ":OPRT(%u):", msg_origport(msg));
 			tipc_printf(buf, ":DPRT(%u):", msg_destport(msg));
 		}
 	}
 	if (msg_user(msg) == NAME_DISTRIBUTOR) {
 		tipc_printf(buf, ":ONOD(%x):", msg_orignode(msg));
 		tipc_printf(buf, ":DNOD(%x):", msg_destnode(msg));
 	}

 	if (msg_user(msg) ==  LINK_CONFIG) {
 		u32 *raw = (u32 *)msg;
 		struct tipc_media_addr *orig = (struct tipc_media_addr *)&raw[5];
 		tipc_printf(buf, ":DDOM(%x):", msg_dest_domain(msg));
 		tipc_printf(buf, ":NETID(%u):", msg_bc_netid(msg));
 		tipc_media_addr_printf(buf, orig);
 	}
 	if (msg_user(msg) == BCAST_PROTOCOL) {
 		tipc_printf(buf, "BCNACK:AFTER(%u):", msg_bcgap_after(msg));
 		tipc_printf(buf, "TO(%u):", msg_bcgap_to(msg));
 	}
 	tipc_printf(buf, "\n");
 	if ((usr == CHANGEOVER_PROTOCOL) && (msg_msgcnt(msg)))
 		tipc_msg_dbg(buf, msg_get_wrapped(msg), "      /");
 	if ((usr == MSG_FRAGMENTER) && (msg_type(msg) == FIRST_FRAGMENT))
 		tipc_msg_dbg(buf, msg_get_wrapped(msg), "      /");
 }

 #endif
	/*
	* net/tipc/msg.c: TIPC message header routines
	*
	* Copyright (c) 2000-2006, Ericsson AB
	* Copyright (c) 2005, 2010-2011, Wind River Systems
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the names of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* Alternatively, this software may be distributed under the terms of the
	* GNU General Public License ("GPL") version 2 as published by the Free
	* Software Foundation.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "core.h"
	#include "msg.h"

	u32 tipc_msg_tot_importance(struct tipc_msg *m)
	{
	if (likely(msg_isdata(m))) {
	if (likely(msg_orignode(m) == tipc_own_addr))
	return msg_importance(m);
	return msg_importance(m) + 4;
	}
	if ((msg_user(m) == MSG_FRAGMENTER) &&
	(msg_type(m) == FIRST_FRAGMENT))
	return msg_importance(msg_get_wrapped(m));
	return msg_importance(m);
	}


	void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
	u32 hsize, u32 destnode)
	{
	memset(m, 0, hsize);
	msg_set_version(m);
	msg_set_user(m, user);
	msg_set_hdr_sz(m, hsize);
	msg_set_size(m, hsize);
	msg_set_prevnode(m, tipc_own_addr);
	msg_set_type(m, type);
	if (!msg_short(m)) {
	msg_set_orignode(m, tipc_own_addr);
	msg_set_destnode(m, destnode);
	}
	}

	/**
	* tipc_msg_calc_data_size - determine total data size for message
	*/

	int tipc_msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect)
	{
	int dsz = 0;
	int i;

	for (i = 0; i < num_sect; i++)
	dsz += msg_sect[i].iov_len;
	return dsz;
	}

	/**
	* tipc_msg_build - create message using specified header and data
	*
	* Note: Caller must not hold any locks in case copy_from_user() is interrupted!
	*
	* Returns message data size or errno
	*/

	int tipc_msg_build(struct tipc_msg *hdr,
	struct iovec const *msg_sect, u32 num_sect,
	int max_size, int usrmem, struct sk_buff **buf)
	{
	int dsz, sz, hsz, pos, res, cnt;

	dsz = tipc_msg_calc_data_size(msg_sect, num_sect);
	if (unlikely(dsz > TIPC_MAX_USER_MSG_SIZE)) {
	*buf = NULL;
	return -EINVAL;
	}

	pos = hsz = msg_hdr_sz(hdr);
	sz = hsz + dsz;
	msg_set_size(hdr, sz);
	if (unlikely(sz > max_size)) {
	*buf = NULL;
	return dsz;
	}

	*buf = tipc_buf_acquire(sz);
	if (!(*buf))
	return -ENOMEM;
	skb_copy_to_linear_data(*buf, hdr, hsz);
	for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
	if (likely(usrmem))
	res = !copy_from_user((*buf)->data + pos,
	msg_sect[cnt].iov_base,
	msg_sect[cnt].iov_len);
	else
	skb_copy_to_linear_data_offset(*buf, pos,
	msg_sect[cnt].iov_base,
	msg_sect[cnt].iov_len);
	pos += msg_sect[cnt].iov_len;
	}
	if (likely(res))
	return dsz;

	buf_discard(*buf);
	*buf = NULL;
	return -EFAULT;
	}

	#ifdef CONFIG_TIPC_DEBUG

	void tipc_msg_dbg(struct print_buf buf, struct tipc_msg msg, const char *str)
	{
	u32 usr = msg_user(msg);
	tipc_printf(buf, KERN_DEBUG);
	tipc_printf(buf, str);

	switch (usr) {
	case MSG_BUNDLER:
	tipc_printf(buf, "BNDL::");
	tipc_printf(buf, "MSGS(%u):", msg_msgcnt(msg));
	break;
	case BCAST_PROTOCOL:
	tipc_printf(buf, "BCASTP::");
	break;
	case MSG_FRAGMENTER:
	tipc_printf(buf, "FRAGM::");
	switch (msg_type(msg)) {
	case FIRST_FRAGMENT:
	tipc_printf(buf, "FIRST:");
	break;
	case FRAGMENT:
	tipc_printf(buf, "BODY:");
	break;
	case LAST_FRAGMENT:
	tipc_printf(buf, "LAST:");
	break;
	default:
	tipc_printf(buf, "UNKNOWN:%x", msg_type(msg));

	}
	tipc_printf(buf, "NO(%u/%u):", msg_long_msgno(msg),
	msg_fragm_no(msg));
	break;
	case TIPC_LOW_IMPORTANCE:
	case TIPC_MEDIUM_IMPORTANCE:
	case TIPC_HIGH_IMPORTANCE:
	case TIPC_CRITICAL_IMPORTANCE:
	tipc_printf(buf, "DAT%u:", msg_user(msg));
	if (msg_short(msg)) {
	tipc_printf(buf, "CON:");
	break;
	}
	switch (msg_type(msg)) {
	case TIPC_CONN_MSG:
	tipc_printf(buf, "CON:");
	break;
	case TIPC_MCAST_MSG:
	tipc_printf(buf, "MCST:");
	break;
	case TIPC_NAMED_MSG:
	tipc_printf(buf, "NAM:");
	break;
	case TIPC_DIRECT_MSG:
	tipc_printf(buf, "DIR:");
	break;
	default:
	tipc_printf(buf, "UNKNOWN TYPE %u", msg_type(msg));
	}
	if (msg_reroute_cnt(msg))
	tipc_printf(buf, "REROUTED(%u):",
	msg_reroute_cnt(msg));
	break;
	case NAME_DISTRIBUTOR:
	tipc_printf(buf, "NMD::");
	switch (msg_type(msg)) {
	case PUBLICATION:
	tipc_printf(buf, "PUBL(%u):", (msg_size(msg) - msg_hdr_sz(msg)) / 20); /* Items */
	break;
	case WITHDRAWAL:
	tipc_printf(buf, "WDRW:");
	break;
	default:
	tipc_printf(buf, "UNKNOWN:%x", msg_type(msg));
	}
	if (msg_reroute_cnt(msg))
	tipc_printf(buf, "REROUTED(%u):",
	msg_reroute_cnt(msg));
	break;
	case CONN_MANAGER:
	tipc_printf(buf, "CONN_MNG:");
	switch (msg_type(msg)) {
	case CONN_PROBE:
	tipc_printf(buf, "PROBE:");
	break;
	case CONN_PROBE_REPLY:
	tipc_printf(buf, "PROBE_REPLY:");
	break;
	case CONN_ACK:
	tipc_printf(buf, "CONN_ACK:");
	tipc_printf(buf, "ACK(%u):", msg_msgcnt(msg));
	break;
	default:
	tipc_printf(buf, "UNKNOWN TYPE:%x", msg_type(msg));
	}
	if (msg_reroute_cnt(msg))
	tipc_printf(buf, "REROUTED(%u):", msg_reroute_cnt(msg));
	break;
	case LINK_PROTOCOL:
	switch (msg_type(msg)) {
	case STATE_MSG:
	tipc_printf(buf, "STATE:");
	tipc_printf(buf, "%s:", msg_probe(msg) ? "PRB" : "");
	tipc_printf(buf, "NXS(%u):", msg_next_sent(msg));
	tipc_printf(buf, "GAP(%u):", msg_seq_gap(msg));
	tipc_printf(buf, "LSTBC(%u):", msg_last_bcast(msg));
	break;
	case RESET_MSG:
	tipc_printf(buf, "RESET:");
	if (msg_size(msg) != msg_hdr_sz(msg))
	tipc_printf(buf, "BEAR:%s:", msg_data(msg));
	break;
	case ACTIVATE_MSG:
	tipc_printf(buf, "ACTIVATE:");
	break;
	default:
	tipc_printf(buf, "UNKNOWN TYPE:%x", msg_type(msg));
	}
	tipc_printf(buf, "PLANE(%c):", msg_net_plane(msg));
	tipc_printf(buf, "SESS(%u):", msg_session(msg));
	break;
	case CHANGEOVER_PROTOCOL:
	tipc_printf(buf, "TUNL:");
	switch (msg_type(msg)) {
	case DUPLICATE_MSG:
	tipc_printf(buf, "DUPL:");
	break;
	case ORIGINAL_MSG:
	tipc_printf(buf, "ORIG:");
	tipc_printf(buf, "EXP(%u)", msg_msgcnt(msg));
	break;
	default:
	tipc_printf(buf, "UNKNOWN TYPE:%x", msg_type(msg));
	}
	break;
	case LINK_CONFIG:
	tipc_printf(buf, "CFG:");
	switch (msg_type(msg)) {
	case DSC_REQ_MSG:
	tipc_printf(buf, "DSC_REQ:");
	break;
	case DSC_RESP_MSG:
	tipc_printf(buf, "DSC_RESP:");
	break;
	default:
	tipc_printf(buf, "UNKNOWN TYPE:%x:", msg_type(msg));
	break;
	}
	break;
	default:
	tipc_printf(buf, "UNKNOWN USER:");
	}

	switch (usr) {
	case CONN_MANAGER:
	case TIPC_LOW_IMPORTANCE:
	case TIPC_MEDIUM_IMPORTANCE:
	case TIPC_HIGH_IMPORTANCE:
	case TIPC_CRITICAL_IMPORTANCE:
	switch (msg_errcode(msg)) {
	case TIPC_OK:
	break;
	case TIPC_ERR_NO_NAME:
	tipc_printf(buf, "NO_NAME:");
	break;
	case TIPC_ERR_NO_PORT:
	tipc_printf(buf, "NO_PORT:");
	break;
	case TIPC_ERR_NO_NODE:
	tipc_printf(buf, "NO_PROC:");
	break;
	case TIPC_ERR_OVERLOAD:
	tipc_printf(buf, "OVERLOAD:");
	break;
	case TIPC_CONN_SHUTDOWN:
	tipc_printf(buf, "SHUTDOWN:");
	break;
	default:
	tipc_printf(buf, "UNKNOWN ERROR(%x):",
	msg_errcode(msg));
	}
	default:
	break;
	}

	tipc_printf(buf, "HZ(%u):", msg_hdr_sz(msg));
	tipc_printf(buf, "SZ(%u):", msg_size(msg));
	tipc_printf(buf, "SQNO(%u):", msg_seqno(msg));

	if (msg_non_seq(msg))
	tipc_printf(buf, "NOSEQ:");
	else
	tipc_printf(buf, "ACK(%u):", msg_ack(msg));
	tipc_printf(buf, "BACK(%u):", msg_bcast_ack(msg));
	tipc_printf(buf, "PRND(%x)", msg_prevnode(msg));

	if (msg_isdata(msg)) {
	if (msg_named(msg)) {
	tipc_printf(buf, "NTYP(%u):", msg_nametype(msg));
	tipc_printf(buf, "NINST(%u)", msg_nameinst(msg));
	}
	}

	if ((usr != LINK_PROTOCOL) && (usr != LINK_CONFIG) &&
	(usr != MSG_BUNDLER)) {
	if (!msg_short(msg)) {
	tipc_printf(buf, ":ORIG(%x:%u):",
	msg_orignode(msg), msg_origport(msg));
	tipc_printf(buf, ":DEST(%x:%u):",
	msg_destnode(msg), msg_destport(msg));
	} else {
	tipc_printf(buf, ":OPRT(%u):", msg_origport(msg));
	tipc_printf(buf, ":DPRT(%u):", msg_destport(msg));
	}
	}
	if (msg_user(msg) == NAME_DISTRIBUTOR) {
	tipc_printf(buf, ":ONOD(%x):", msg_orignode(msg));
	tipc_printf(buf, ":DNOD(%x):", msg_destnode(msg));
	}

	if (msg_user(msg) == LINK_CONFIG) {
	u32 raw = (u32 )msg;
	struct tipc_media_addr orig = (struct tipc_media_addr )&raw[5];
	tipc_printf(buf, ":DDOM(%x):", msg_dest_domain(msg));
	tipc_printf(buf, ":NETID(%u):", msg_bc_netid(msg));
	tipc_media_addr_printf(buf, orig);
	}
	if (msg_user(msg) == BCAST_PROTOCOL) {
	tipc_printf(buf, "BCNACK:AFTER(%u):", msg_bcgap_after(msg));
	tipc_printf(buf, "TO(%u):", msg_bcgap_to(msg));
	}
	tipc_printf(buf, "\n");
	if ((usr == CHANGEOVER_PROTOCOL) && (msg_msgcnt(msg)))
	tipc_msg_dbg(buf, msg_get_wrapped(msg), " /");
	if ((usr == MSG_FRAGMENTER) && (msg_type(msg) == FIRST_FRAGMENT))
	tipc_msg_dbg(buf, msg_get_wrapped(msg), " /");
	}

	#endif