[mirror_ubuntu-artful-kernel.git] / net / tipc / msg.h

/*
 * net/tipc/msg.h: Include file for TIPC message header routines
 *
 * Copyright (c) 2000-2007, 2014, Ericsson AB
 * Copyright (c) 2005-2008, 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.
 */

#ifndef _TIPC_MSG_H
#define _TIPC_MSG_H

#include "bearer.h"

/*
 * Constants and routines used to read and write TIPC payload message headers
 *
 * Note: Some items are also used with TIPC internal message headers
 */
#define TIPC_VERSION              2

/*
 * Payload message users are defined in TIPC's public API:
 * - TIPC_LOW_IMPORTANCE
 * - TIPC_MEDIUM_IMPORTANCE
 * - TIPC_HIGH_IMPORTANCE
 * - TIPC_CRITICAL_IMPORTANCE
 */

/*
 * Payload message types
 */
#define TIPC_CONN_MSG		0
#define TIPC_MCAST_MSG		1
#define TIPC_NAMED_MSG		2
#define TIPC_DIRECT_MSG		3

/*
 * Message header sizes
 */
#define SHORT_H_SIZE              24	/* In-cluster basic payload message */
#define BASIC_H_SIZE              32	/* Basic payload message */
#define NAMED_H_SIZE              40	/* Named payload message */
#define MCAST_H_SIZE              44	/* Multicast payload message */
#define INT_H_SIZE                40	/* Internal messages */
#define MIN_H_SIZE                24	/* Smallest legal TIPC header size */
#define MAX_H_SIZE                60	/* Largest possible TIPC header size */

#define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)

#define TIPC_MEDIA_ADDR_OFFSET	5

struct tipc_msg {
	__be32 hdr[15];
};

static inline u32 msg_word(struct tipc_msg *m, u32 pos)
{
	return ntohl(m->hdr[pos]);
}

static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
{
	m->hdr[w] = htonl(val);
}

static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
{
	return (msg_word(m, w) >> pos) & mask;
}

static inline void msg_set_bits(struct tipc_msg *m, u32 w,
				u32 pos, u32 mask, u32 val)
{
	val = (val & mask) << pos;
	mask = mask << pos;
	m->hdr[w] &= ~htonl(mask);
	m->hdr[w] |= htonl(val);
}

static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
{
	u32 temp = msg->hdr[a];

	msg->hdr[a] = msg->hdr[b];
	msg->hdr[b] = temp;
}

/*
 * Word 0
 */
static inline u32 msg_version(struct tipc_msg *m)
{
	return msg_bits(m, 0, 29, 7);
}

static inline void msg_set_version(struct tipc_msg *m)
{
	msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
}

static inline u32 msg_user(struct tipc_msg *m)
{
	return msg_bits(m, 0, 25, 0xf);
}

static inline u32 msg_isdata(struct tipc_msg *m)
{
	return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
}

static inline void msg_set_user(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 0, 25, 0xf, n);
}

static inline u32 msg_importance(struct tipc_msg *m)
{
	return msg_bits(m, 0, 25, 0xf);
}

static inline void msg_set_importance(struct tipc_msg *m, u32 i)
{
	msg_set_user(m, i);
}

static inline u32 msg_hdr_sz(struct tipc_msg *m)
{
	return msg_bits(m, 0, 21, 0xf) << 2;
}

static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 0, 21, 0xf, n>>2);
}

static inline u32 msg_size(struct tipc_msg *m)
{
	return msg_bits(m, 0, 0, 0x1ffff);
}

static inline u32 msg_data_sz(struct tipc_msg *m)
{
	return msg_size(m) - msg_hdr_sz(m);
}

static inline int msg_non_seq(struct tipc_msg *m)
{
	return msg_bits(m, 0, 20, 1);
}

static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 0, 20, 1, n);
}

static inline int msg_dest_droppable(struct tipc_msg *m)
{
	return msg_bits(m, 0, 19, 1);
}

static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
{
	msg_set_bits(m, 0, 19, 1, d);
}

static inline int msg_src_droppable(struct tipc_msg *m)
{
	return msg_bits(m, 0, 18, 1);
}

static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
{
	msg_set_bits(m, 0, 18, 1, d);
}

static inline void msg_set_size(struct tipc_msg *m, u32 sz)
{
	m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
}


/*
 * Word 1
 */
static inline u32 msg_type(struct tipc_msg *m)
{
	return msg_bits(m, 1, 29, 0x7);
}

static inline void msg_set_type(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 1, 29, 0x7, n);
}

static inline u32 msg_named(struct tipc_msg *m)
{
	return msg_type(m) == TIPC_NAMED_MSG;
}

static inline u32 msg_mcast(struct tipc_msg *m)
{
	return msg_type(m) == TIPC_MCAST_MSG;
}

static inline u32 msg_connected(struct tipc_msg *m)
{
	return msg_type(m) == TIPC_CONN_MSG;
}

static inline u32 msg_errcode(struct tipc_msg *m)
{
	return msg_bits(m, 1, 25, 0xf);
}

static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
{
	msg_set_bits(m, 1, 25, 0xf, err);
}

static inline u32 msg_reroute_cnt(struct tipc_msg *m)
{
	return msg_bits(m, 1, 21, 0xf);
}

static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
{
	msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
}

static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
{
	msg_set_bits(m, 1, 21, 0xf, 0);
}

static inline u32 msg_lookup_scope(struct tipc_msg *m)
{
	return msg_bits(m, 1, 19, 0x3);
}

static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 1, 19, 0x3, n);
}

static inline u32 msg_bcast_ack(struct tipc_msg *m)
{
	return msg_bits(m, 1, 0, 0xffff);
}

static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 1, 0, 0xffff, n);
}


/*
 * Word 2
 */
static inline u32 msg_ack(struct tipc_msg *m)
{
	return msg_bits(m, 2, 16, 0xffff);
}

static inline void msg_set_ack(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 2, 16, 0xffff, n);
}

static inline u32 msg_seqno(struct tipc_msg *m)
{
	return msg_bits(m, 2, 0, 0xffff);
}

static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 2, 0, 0xffff, n);
}

/*
 * Words 3-10
 */
static inline u32 msg_prevnode(struct tipc_msg *m)
{
	return msg_word(m, 3);
}

static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
{
	msg_set_word(m, 3, a);
}

static inline u32 msg_origport(struct tipc_msg *m)
{
	return msg_word(m, 4);
}

static inline void msg_set_origport(struct tipc_msg *m, u32 p)
{
	msg_set_word(m, 4, p);
}

static inline u32 msg_destport(struct tipc_msg *m)
{
	return msg_word(m, 5);
}

static inline void msg_set_destport(struct tipc_msg *m, u32 p)
{
	msg_set_word(m, 5, p);
}

static inline u32 msg_mc_netid(struct tipc_msg *m)
{
	return msg_word(m, 5);
}

static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
{
	msg_set_word(m, 5, p);
}

static inline int msg_short(struct tipc_msg *m)
{
	return msg_hdr_sz(m) == SHORT_H_SIZE;
}

static inline u32 msg_orignode(struct tipc_msg *m)
{
	if (likely(msg_short(m)))
		return msg_prevnode(m);
	return msg_word(m, 6);
}

static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
{
	msg_set_word(m, 6, a);
}

static inline u32 msg_destnode(struct tipc_msg *m)
{
	return msg_word(m, 7);
}

static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
{
	msg_set_word(m, 7, a);
}

static inline u32 msg_nametype(struct tipc_msg *m)
{
	return msg_word(m, 8);
}

static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
{
	msg_set_word(m, 8, n);
}

static inline u32 msg_nameinst(struct tipc_msg *m)
{
	return msg_word(m, 9);
}

static inline u32 msg_namelower(struct tipc_msg *m)
{
	return msg_nameinst(m);
}

static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
{
	msg_set_word(m, 9, n);
}

static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
{
	msg_set_namelower(m, n);
}

static inline u32 msg_nameupper(struct tipc_msg *m)
{
	return msg_word(m, 10);
}

static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
{
	msg_set_word(m, 10, n);
}

static inline unchar *msg_data(struct tipc_msg *m)
{
	return ((unchar *)m) + msg_hdr_sz(m);
}

static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
{
	return (struct tipc_msg *)msg_data(m);
}

/*
 * Constants and routines used to read and write TIPC internal message headers
 */

/*
 * Internal message users
 */
#define  BCAST_PROTOCOL       5
#define  MSG_BUNDLER          6
#define  LINK_PROTOCOL        7
#define  CONN_MANAGER         8
#define  ROUTE_DISTRIBUTOR    9		/* obsoleted */
#define  CHANGEOVER_PROTOCOL  10
#define  NAME_DISTRIBUTOR     11
#define  MSG_FRAGMENTER       12
#define  LINK_CONFIG          13
#define  SOCK_WAKEUP          14       /* pseudo user */

/*
 *  Connection management protocol message types
 */
#define CONN_PROBE        0
#define CONN_PROBE_REPLY  1
#define CONN_ACK          2

/*
 * Name distributor message types
 */
#define PUBLICATION       0
#define WITHDRAWAL        1

/*
 * Segmentation message types
 */
#define FIRST_FRAGMENT		0
#define FRAGMENT		1
#define LAST_FRAGMENT		2

/*
 * Link management protocol message types
 */
#define STATE_MSG		0
#define RESET_MSG		1
#define ACTIVATE_MSG		2

/*
 * Changeover tunnel message types
 */
#define DUPLICATE_MSG		0
#define ORIGINAL_MSG		1

/*
 * Config protocol message types
 */
#define DSC_REQ_MSG		0
#define DSC_RESP_MSG		1


/*
 * Word 1
 */
static inline u32 msg_seq_gap(struct tipc_msg *m)
{
	return msg_bits(m, 1, 16, 0x1fff);
}

static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 1, 16, 0x1fff, n);
}

static inline u32 msg_node_sig(struct tipc_msg *m)
{
	return msg_bits(m, 1, 0, 0xffff);
}

static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 1, 0, 0xffff, n);
}


/*
 * Word 2
 */
static inline u32 msg_dest_domain(struct tipc_msg *m)
{
	return msg_word(m, 2);
}

static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
{
	msg_set_word(m, 2, n);
}

static inline u32 msg_bcgap_after(struct tipc_msg *m)
{
	return msg_bits(m, 2, 16, 0xffff);
}

static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 2, 16, 0xffff, n);
}

static inline u32 msg_bcgap_to(struct tipc_msg *m)
{
	return msg_bits(m, 2, 0, 0xffff);
}

static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 2, 0, 0xffff, n);
}


/*
 * Word 4
 */
static inline u32 msg_last_bcast(struct tipc_msg *m)
{
	return msg_bits(m, 4, 16, 0xffff);
}

static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 4, 16, 0xffff, n);
}

static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 4, 16, 0xffff, n);
}


static inline u32 msg_next_sent(struct tipc_msg *m)
{
	return msg_bits(m, 4, 0, 0xffff);
}

static inline void msg_set_next_sent(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 4, 0, 0xffff, n);
}

static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 4, 0, 0xffff, n);
}

static inline u32 msg_bc_netid(struct tipc_msg *m)
{
	return msg_word(m, 4);
}

static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
{
	msg_set_word(m, 4, id);
}

static inline u32 msg_link_selector(struct tipc_msg *m)
{
	return msg_bits(m, 4, 0, 1);
}

static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 4, 0, 1, n);
}

/*
 * Word 5
 */
static inline u32 msg_session(struct tipc_msg *m)
{
	return msg_bits(m, 5, 16, 0xffff);
}

static inline void msg_set_session(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 5, 16, 0xffff, n);
}

static inline u32 msg_probe(struct tipc_msg *m)
{
	return msg_bits(m, 5, 0, 1);
}

static inline void msg_set_probe(struct tipc_msg *m, u32 val)
{
	msg_set_bits(m, 5, 0, 1, val);
}

static inline char msg_net_plane(struct tipc_msg *m)
{
	return msg_bits(m, 5, 1, 7) + 'A';
}

static inline void msg_set_net_plane(struct tipc_msg *m, char n)
{
	msg_set_bits(m, 5, 1, 7, (n - 'A'));
}

static inline u32 msg_linkprio(struct tipc_msg *m)
{
	return msg_bits(m, 5, 4, 0x1f);
}

static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 5, 4, 0x1f, n);
}

static inline u32 msg_bearer_id(struct tipc_msg *m)
{
	return msg_bits(m, 5, 9, 0x7);
}

static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 5, 9, 0x7, n);
}

static inline u32 msg_redundant_link(struct tipc_msg *m)
{
	return msg_bits(m, 5, 12, 0x1);
}

static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
{
	msg_set_bits(m, 5, 12, 0x1, r);
}

static inline char *msg_media_addr(struct tipc_msg *m)
{
	return (char *)&m->hdr[TIPC_MEDIA_ADDR_OFFSET];
}

/*
 * Word 9
 */
static inline u32 msg_msgcnt(struct tipc_msg *m)
{
	return msg_bits(m, 9, 16, 0xffff);
}

static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 9, 16, 0xffff, n);
}

static inline u32 msg_bcast_tag(struct tipc_msg *m)
{
	return msg_bits(m, 9, 16, 0xffff);
}

static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 9, 16, 0xffff, n);
}

static inline u32 msg_max_pkt(struct tipc_msg *m)
{
	return msg_bits(m, 9, 16, 0xffff) * 4;
}

static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 9, 16, 0xffff, (n / 4));
}

static inline u32 msg_link_tolerance(struct tipc_msg *m)
{
	return msg_bits(m, 9, 0, 0xffff);
}

static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
{
	msg_set_bits(m, 9, 0, 0xffff, n);
}

static inline u32 tipc_msg_tot_importance(struct tipc_msg *m)
{
	if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT))
		return msg_importance(msg_get_wrapped(m));
	return msg_importance(m);
}

static inline u32 msg_tot_origport(struct tipc_msg *m)
{
	if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT))
		return msg_origport(msg_get_wrapped(m));
	return msg_origport(m);
}

bool tipc_msg_reverse(struct sk_buff *buf, u32 *dnode, int err);

int tipc_msg_eval(struct sk_buff *buf, u32 *dnode);

void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
		   u32 destnode);

struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
				uint data_sz, u32 dnode, u32 onode,
				u32 dport, u32 oport, int errcode);

int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf);

bool tipc_msg_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu);

bool tipc_msg_make_bundle(struct sk_buff_head *list, struct sk_buff *skb,
			  u32 mtu, u32 dnode);

int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset,
		   int dsz, int mtu, struct sk_buff_head *list);

struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list);

#endif
Commit	Line	Data
b97bf3fd PL	1	/*
b97bf3fd PL	2	* net/tipc/msg.h: Include file for TIPC message header routines
c4307285	3	*
37e22164	4	* Copyright (c) 2000-2007, 2014, Ericsson AB
741de3e9	5	* Copyright (c) 2005-2008, 2010-2011, Wind River Systems
b97bf3fd PL	6	* All rights reserved.
b97bf3fd PL	7	*
9ea1fd3c	8	* Redistribution and use in source and binary forms, with or without
b97bf3fd PL	9	* modification, are permitted provided that the following conditions are met:
b97bf3fd PL	10	*
9ea1fd3c PL	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. Neither the names of the copyright holders nor the names of its
	17	* contributors may be used to endorse or promote products derived from
	18	* this software without specific prior written permission.
b97bf3fd	19	*
9ea1fd3c PL	20	* Alternatively, this software may be distributed under the terms of the
	21	* GNU General Public License ("GPL") version 2 as published by the Free
	22	* Software Foundation.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	25	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	28	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	29	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	30	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	31	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	32	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	33	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
b97bf3fd PL	34	* POSSIBILITY OF SUCH DAMAGE.
	35	*/
	36
	37	#ifndef _TIPC_MSG_H
	38	#define _TIPC_MSG_H
	39
d265fef6	40	#include "bearer.h"
b97bf3fd	41
cc4c4353 AS	42	/*
	43	* Constants and routines used to read and write TIPC payload message headers
	44	*
	45	* Note: Some items are also used with TIPC internal message headers
	46	*/
b97bf3fd	47	#define TIPC_VERSION 2
06d82c91	48
d265fef6	49	/*
cc4c4353 AS	50	* Payload message users are defined in TIPC's public API:
	51	* - TIPC_LOW_IMPORTANCE
	52	* - TIPC_MEDIUM_IMPORTANCE
	53	* - TIPC_HIGH_IMPORTANCE
	54	* - TIPC_CRITICAL_IMPORTANCE
	55	*/
	56
	57	/*
	58	* Payload message types
d265fef6	59	*/
d265fef6 AS	60	#define TIPC_CONN_MSG 0
	61	#define TIPC_MCAST_MSG 1
	62	#define TIPC_NAMED_MSG 2
	63	#define TIPC_DIRECT_MSG 3
	64
cc4c4353 AS	65	/*
	66	* Message header sizes
	67	*/
741d9eb7 AS	68	#define SHORT_H_SIZE 24 /* In-cluster basic payload message */
	69	#define BASIC_H_SIZE 32 /* Basic payload message */
	70	#define NAMED_H_SIZE 40 /* Named payload message */
	71	#define MCAST_H_SIZE 44 /* Multicast payload message */
06d82c91 AS	72	#define INT_H_SIZE 40 /* Internal messages */
	73	#define MIN_H_SIZE 24 /* Smallest legal TIPC header size */
	74	#define MAX_H_SIZE 60 /* Largest possible TIPC header size */
	75
b97bf3fd	76	#define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)
b97bf3fd	77
3d749a6a AS	78	#define TIPC_MEDIA_ADDR_OFFSET 5
3d749a6a AS	79
d265fef6 AS	80	struct tipc_msg {
	81	__be32 hdr[15];
	82	};
c4307285	83
d265fef6 AS	84	static inline u32 msg_word(struct tipc_msg *m, u32 pos)
	85	{
	86	return ntohl(m->hdr[pos]);
	87	}
b97bf3fd PL	88
	89	static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
	90	{
	91	m->hdr[w] = htonl(val);
	92	}
	93
d265fef6 AS	94	static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
	95	{
	96	return (msg_word(m, w) >> pos) & mask;
	97	}
	98
b97bf3fd PL	99	static inline void msg_set_bits(struct tipc_msg *m, u32 w,
	100	u32 pos, u32 mask, u32 val)
	101	{
1f9eda7e	102	val = (val & mask) << pos;
becf3da2 AV	103	mask = mask << pos;
	104	m->hdr[w] &= ~htonl(mask);
	105	m->hdr[w] \|= htonl(val);
b97bf3fd PL	106	}
b97bf3fd PL	107
40aecb1b AS	108	static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
	109	{
	110	u32 temp = msg->hdr[a];
	111
	112	msg->hdr[a] = msg->hdr[b];
	113	msg->hdr[b] = temp;
	114	}
	115
c4307285	116	/*
b97bf3fd PL	117	* Word 0
b97bf3fd PL	118	*/
b97bf3fd PL	119	static inline u32 msg_version(struct tipc_msg *m)
	120	{
	121	return msg_bits(m, 0, 29, 7);
	122	}
	123
c4307285	124	static inline void msg_set_version(struct tipc_msg *m)
b97bf3fd	125	{
37695420	126	msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
b97bf3fd PL	127	}
	128
	129	static inline u32 msg_user(struct tipc_msg *m)
	130	{
	131	return msg_bits(m, 0, 25, 0xf);
	132	}
	133
	134	static inline u32 msg_isdata(struct tipc_msg *m)
	135	{
a02cec21	136	return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
b97bf3fd PL	137	}
b97bf3fd PL	138
c4307285	139	static inline void msg_set_user(struct tipc_msg *m, u32 n)
b97bf3fd PL	140	{
	141	msg_set_bits(m, 0, 25, 0xf, n);
	142	}
	143
d265fef6 AS	144	static inline u32 msg_importance(struct tipc_msg *m)
	145	{
	146	return msg_bits(m, 0, 25, 0xf);
	147	}
	148
c4307285	149	static inline void msg_set_importance(struct tipc_msg *m, u32 i)
b97bf3fd PL	150	{
	151	msg_set_user(m, i);
	152	}
	153
d265fef6 AS	154	static inline u32 msg_hdr_sz(struct tipc_msg *m)
	155	{
	156	return msg_bits(m, 0, 21, 0xf) << 2;
	157	}
	158
0e65967e	159	static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
b97bf3fd PL	160	{
	161	msg_set_bits(m, 0, 21, 0xf, n>>2);
	162	}
	163
d265fef6 AS	164	static inline u32 msg_size(struct tipc_msg *m)
	165	{
	166	return msg_bits(m, 0, 0, 0x1ffff);
	167	}
	168
	169	static inline u32 msg_data_sz(struct tipc_msg *m)
	170	{
	171	return msg_size(m) - msg_hdr_sz(m);
	172	}
	173
c4307285	174	static inline int msg_non_seq(struct tipc_msg *m)
b97bf3fd PL	175	{
	176	return msg_bits(m, 0, 20, 1);
	177	}
	178
40aecb1b	179	static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
b97bf3fd	180	{
40aecb1b	181	msg_set_bits(m, 0, 20, 1, n);
b97bf3fd PL	182	}
b97bf3fd PL	183
c4307285	184	static inline int msg_dest_droppable(struct tipc_msg *m)
b97bf3fd PL	185	{
	186	return msg_bits(m, 0, 19, 1);
	187	}
	188
c4307285	189	static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
b97bf3fd PL	190	{
	191	msg_set_bits(m, 0, 19, 1, d);
	192	}
	193
c4307285	194	static inline int msg_src_droppable(struct tipc_msg *m)
b97bf3fd PL	195	{
	196	return msg_bits(m, 0, 18, 1);
	197	}
	198
c4307285	199	static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
b97bf3fd PL	200	{
	201	msg_set_bits(m, 0, 18, 1, d);
	202	}
	203
	204	static inline void msg_set_size(struct tipc_msg *m, u32 sz)
	205	{
	206	m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) \| sz);
	207	}
	208
	209
c4307285	210	/*
b97bf3fd PL	211	* Word 1
b97bf3fd PL	212	*/
d265fef6 AS	213	static inline u32 msg_type(struct tipc_msg *m)
	214	{
	215	return msg_bits(m, 1, 29, 0x7);
	216	}
	217
c4307285	218	static inline void msg_set_type(struct tipc_msg *m, u32 n)
b97bf3fd PL	219	{
	220	msg_set_bits(m, 1, 29, 0x7, n);
	221	}
	222
d265fef6 AS	223	static inline u32 msg_named(struct tipc_msg *m)
	224	{
	225	return msg_type(m) == TIPC_NAMED_MSG;
	226	}
	227
	228	static inline u32 msg_mcast(struct tipc_msg *m)
	229	{
	230	return msg_type(m) == TIPC_MCAST_MSG;
	231	}
	232
	233	static inline u32 msg_connected(struct tipc_msg *m)
	234	{
	235	return msg_type(m) == TIPC_CONN_MSG;
	236	}
	237
	238	static inline u32 msg_errcode(struct tipc_msg *m)
	239	{
	240	return msg_bits(m, 1, 25, 0xf);
	241	}
	242
c4307285	243	static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
b97bf3fd PL	244	{
	245	msg_set_bits(m, 1, 25, 0xf, err);
	246	}
	247
c4307285	248	static inline u32 msg_reroute_cnt(struct tipc_msg *m)
b97bf3fd PL	249	{
	250	return msg_bits(m, 1, 21, 0xf);
	251	}
	252
c4307285	253	static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
b97bf3fd PL	254	{
	255	msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
	256	}
	257
c4307285	258	static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
b97bf3fd PL	259	{
	260	msg_set_bits(m, 1, 21, 0xf, 0);
	261	}
	262
	263	static inline u32 msg_lookup_scope(struct tipc_msg *m)
	264	{
	265	return msg_bits(m, 1, 19, 0x3);
	266	}
	267
c4307285	268	static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
b97bf3fd PL	269	{
	270	msg_set_bits(m, 1, 19, 0x3, n);
	271	}
	272
b97bf3fd PL	273	static inline u32 msg_bcast_ack(struct tipc_msg *m)
	274	{
	275	return msg_bits(m, 1, 0, 0xffff);
	276	}
	277
c4307285	278	static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n)
b97bf3fd PL	279	{
	280	msg_set_bits(m, 1, 0, 0xffff, n);
	281	}
	282
	283
c4307285	284	/*
b97bf3fd PL	285	* Word 2
b97bf3fd PL	286	*/
b97bf3fd PL	287	static inline u32 msg_ack(struct tipc_msg *m)
	288	{
	289	return msg_bits(m, 2, 16, 0xffff);
	290	}
	291
c4307285	292	static inline void msg_set_ack(struct tipc_msg *m, u32 n)
b97bf3fd PL	293	{
	294	msg_set_bits(m, 2, 16, 0xffff, n);
	295	}
	296
	297	static inline u32 msg_seqno(struct tipc_msg *m)
	298	{
	299	return msg_bits(m, 2, 0, 0xffff);
	300	}
	301
c4307285	302	static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
b97bf3fd PL	303	{
	304	msg_set_bits(m, 2, 0, 0xffff, n);
	305	}
	306
c4307285	307	/*
b97bf3fd PL	308	* Words 3-10
b97bf3fd PL	309	*/
d265fef6 AS	310	static inline u32 msg_prevnode(struct tipc_msg *m)
	311	{
	312	return msg_word(m, 3);
	313	}
	314
c4307285	315	static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
b97bf3fd PL	316	{
	317	msg_set_word(m, 3, a);
	318	}
	319
d265fef6 AS	320	static inline u32 msg_origport(struct tipc_msg *m)
	321	{
	322	return msg_word(m, 4);
	323	}
	324
c4307285	325	static inline void msg_set_origport(struct tipc_msg *m, u32 p)
b97bf3fd PL	326	{
	327	msg_set_word(m, 4, p);
	328	}
	329
d265fef6 AS	330	static inline u32 msg_destport(struct tipc_msg *m)
	331	{
	332	return msg_word(m, 5);
	333	}
	334
c4307285	335	static inline void msg_set_destport(struct tipc_msg *m, u32 p)
b97bf3fd PL	336	{
	337	msg_set_word(m, 5, p);
	338	}
	339
d265fef6 AS	340	static inline u32 msg_mc_netid(struct tipc_msg *m)
	341	{
	342	return msg_word(m, 5);
	343	}
	344
c4307285	345	static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
b97bf3fd PL	346	{
	347	msg_set_word(m, 5, p);
	348	}
	349
d265fef6 AS	350	static inline int msg_short(struct tipc_msg *m)
d265fef6 AS	351	{
741d9eb7	352	return msg_hdr_sz(m) == SHORT_H_SIZE;
d265fef6 AS	353	}
	354
	355	static inline u32 msg_orignode(struct tipc_msg *m)
	356	{
	357	if (likely(msg_short(m)))
	358	return msg_prevnode(m);
	359	return msg_word(m, 6);
	360	}
	361
c4307285	362	static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
b97bf3fd PL	363	{
	364	msg_set_word(m, 6, a);
	365	}
	366
d265fef6 AS	367	static inline u32 msg_destnode(struct tipc_msg *m)
	368	{
	369	return msg_word(m, 7);
	370	}
	371
c4307285	372	static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
b97bf3fd PL	373	{
	374	msg_set_word(m, 7, a);
	375	}
	376
d265fef6 AS	377	static inline u32 msg_nametype(struct tipc_msg *m)
	378	{
	379	return msg_word(m, 8);
	380	}
	381
c4307285	382	static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
b97bf3fd PL	383	{
	384	msg_set_word(m, 8, n);
	385	}
	386
d265fef6 AS	387	static inline u32 msg_nameinst(struct tipc_msg *m)
	388	{
	389	return msg_word(m, 9);
	390	}
	391
	392	static inline u32 msg_namelower(struct tipc_msg *m)
	393	{
	394	return msg_nameinst(m);
	395	}
	396
c4307285	397	static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
b97bf3fd PL	398	{
	399	msg_set_word(m, 9, n);
	400	}
	401
c4307285	402	static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
b97bf3fd PL	403	{
	404	msg_set_namelower(m, n);
	405	}
	406
d265fef6 AS	407	static inline u32 msg_nameupper(struct tipc_msg *m)
	408	{
	409	return msg_word(m, 10);
	410	}
	411
c4307285	412	static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
b97bf3fd PL	413	{
	414	msg_set_word(m, 10, n);
	415	}
	416
d265fef6 AS	417	static inline unchar msg_data(struct tipc_msg m)
	418	{
	419	return ((unchar *)m) + msg_hdr_sz(m);
	420	}
	421
b97bf3fd PL	422	static inline struct tipc_msg msg_get_wrapped(struct tipc_msg m)
	423	{
	424	return (struct tipc_msg *)msg_data(m);
	425	}
	426
b97bf3fd	427	/*
cc4c4353 AS	428	* Constants and routines used to read and write TIPC internal message headers
cc4c4353 AS	429	*/
b97bf3fd	430
c4307285	431	/*
cc4c4353	432	* Internal message users
b97bf3fd	433	*/
b97bf3fd PL	434	#define BCAST_PROTOCOL 5
	435	#define MSG_BUNDLER 6
	436	#define LINK_PROTOCOL 7
	437	#define CONN_MANAGER 8
51a8e4de	438	#define ROUTE_DISTRIBUTOR 9 /* obsoleted */
b97bf3fd PL	439	#define CHANGEOVER_PROTOCOL 10
	440	#define NAME_DISTRIBUTOR 11
	441	#define MSG_FRAGMENTER 12
	442	#define LINK_CONFIG 13
50100a5e	443	#define SOCK_WAKEUP 14 /* pseudo user */
b97bf3fd	444
c4307285	445	/*
cc4c4353	446	* Connection management protocol message types
b97bf3fd	447	*/
b97bf3fd PL	448	#define CONN_PROBE 0
	449	#define CONN_PROBE_REPLY 1
	450	#define CONN_ACK 2
	451
c4307285	452	/*
cc4c4353	453	* Name distributor message types
b97bf3fd	454	*/
b97bf3fd PL	455	#define PUBLICATION 0
	456	#define WITHDRAWAL 1
	457
92138d1f AS	458	/*
	459	* Segmentation message types
	460	*/
92138d1f AS	461	#define FIRST_FRAGMENT 0
	462	#define FRAGMENT 1
	463	#define LAST_FRAGMENT 2
	464
	465	/*
	466	* Link management protocol message types
	467	*/
92138d1f AS	468	#define STATE_MSG 0
	469	#define RESET_MSG 1
	470	#define ACTIVATE_MSG 2
	471
	472	/*
	473	* Changeover tunnel message types
	474	*/
	475	#define DUPLICATE_MSG 0
	476	#define ORIGINAL_MSG 1
	477
	478	/*
	479	* Config protocol message types
	480	*/
92138d1f AS	481	#define DSC_REQ_MSG 0
	482	#define DSC_RESP_MSG 1
	483
b97bf3fd	484
c4307285	485	/*
b97bf3fd PL	486	* Word 1
b97bf3fd PL	487	*/
b97bf3fd PL	488	static inline u32 msg_seq_gap(struct tipc_msg *m)
b97bf3fd PL	489	{
bd784533	490	return msg_bits(m, 1, 16, 0x1fff);
b97bf3fd PL	491	}
	492
	493	static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
	494	{
bd784533	495	msg_set_bits(m, 1, 16, 0x1fff, n);
b97bf3fd PL	496	}
b97bf3fd PL	497
fc0eea69 AS	498	static inline u32 msg_node_sig(struct tipc_msg *m)
	499	{
	500	return msg_bits(m, 1, 0, 0xffff);
	501	}
	502
	503	static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
	504	{
	505	msg_set_bits(m, 1, 0, 0xffff, n);
	506	}
	507
b97bf3fd	508
c4307285	509	/*
b97bf3fd PL	510	* Word 2
b97bf3fd PL	511	*/
b97bf3fd PL	512	static inline u32 msg_dest_domain(struct tipc_msg *m)
	513	{
	514	return msg_word(m, 2);
	515	}
	516
c4307285	517	static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
b97bf3fd PL	518	{
	519	msg_set_word(m, 2, n);
	520	}
	521
	522	static inline u32 msg_bcgap_after(struct tipc_msg *m)
	523	{
	524	return msg_bits(m, 2, 16, 0xffff);
	525	}
	526
	527	static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
	528	{
	529	msg_set_bits(m, 2, 16, 0xffff, n);
	530	}
	531
	532	static inline u32 msg_bcgap_to(struct tipc_msg *m)
	533	{
	534	return msg_bits(m, 2, 0, 0xffff);
	535	}
	536
c4307285	537	static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
b97bf3fd PL	538	{
	539	msg_set_bits(m, 2, 0, 0xffff, n);
	540	}
	541
	542
c4307285	543	/*
b97bf3fd PL	544	* Word 4
b97bf3fd PL	545	*/
b97bf3fd PL	546	static inline u32 msg_last_bcast(struct tipc_msg *m)
	547	{
	548	return msg_bits(m, 4, 16, 0xffff);
	549	}
	550
	551	static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
	552	{
	553	msg_set_bits(m, 4, 16, 0xffff, n);
	554	}
	555
b97bf3fd PL	556	static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
	557	{
	558	msg_set_bits(m, 4, 16, 0xffff, n);
	559	}
	560
	561
	562	static inline u32 msg_next_sent(struct tipc_msg *m)
	563	{
	564	return msg_bits(m, 4, 0, 0xffff);
	565	}
	566
	567	static inline void msg_set_next_sent(struct tipc_msg *m, u32 n)
	568	{
	569	msg_set_bits(m, 4, 0, 0xffff, n);
	570	}
	571
b97bf3fd PL	572	static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
	573	{
	574	msg_set_bits(m, 4, 0, 0xffff, n);
	575	}
	576
	577	static inline u32 msg_bc_netid(struct tipc_msg *m)
	578	{
	579	return msg_word(m, 4);
	580	}
	581
	582	static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
	583	{
	584	msg_set_word(m, 4, id);
	585	}
	586
	587	static inline u32 msg_link_selector(struct tipc_msg *m)
	588	{
	589	return msg_bits(m, 4, 0, 1);
	590	}
	591
	592	static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
	593	{
7eb878ed	594	msg_set_bits(m, 4, 0, 1, n);
b97bf3fd PL	595	}
b97bf3fd PL	596
c4307285	597	/*
b97bf3fd PL	598	* Word 5
b97bf3fd PL	599	*/
b97bf3fd PL	600	static inline u32 msg_session(struct tipc_msg *m)
	601	{
	602	return msg_bits(m, 5, 16, 0xffff);
	603	}
	604
	605	static inline void msg_set_session(struct tipc_msg *m, u32 n)
	606	{
	607	msg_set_bits(m, 5, 16, 0xffff, n);
	608	}
	609
	610	static inline u32 msg_probe(struct tipc_msg *m)
	611	{
	612	return msg_bits(m, 5, 0, 1);
	613	}
	614
	615	static inline void msg_set_probe(struct tipc_msg *m, u32 val)
	616	{
7eb878ed	617	msg_set_bits(m, 5, 0, 1, val);
b97bf3fd PL	618	}
	619
	620	static inline char msg_net_plane(struct tipc_msg *m)
	621	{
	622	return msg_bits(m, 5, 1, 7) + 'A';
	623	}
	624
	625	static inline void msg_set_net_plane(struct tipc_msg *m, char n)
	626	{
	627	msg_set_bits(m, 5, 1, 7, (n - 'A'));
	628	}
	629
	630	static inline u32 msg_linkprio(struct tipc_msg *m)
	631	{
	632	return msg_bits(m, 5, 4, 0x1f);
	633	}
	634
	635	static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
	636	{
	637	msg_set_bits(m, 5, 4, 0x1f, n);
	638	}
	639
	640	static inline u32 msg_bearer_id(struct tipc_msg *m)
	641	{
	642	return msg_bits(m, 5, 9, 0x7);
	643	}
	644
	645	static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
	646	{
	647	msg_set_bits(m, 5, 9, 0x7, n);
	648	}
	649
	650	static inline u32 msg_redundant_link(struct tipc_msg *m)
	651	{
	652	return msg_bits(m, 5, 12, 0x1);
	653	}
	654
77f167fc	655	static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
b97bf3fd	656	{
77f167fc	657	msg_set_bits(m, 5, 12, 0x1, r);
b97bf3fd PL	658	}
b97bf3fd PL	659
3d749a6a AS	660	static inline char msg_media_addr(struct tipc_msg m)
	661	{
	662	return (char *)&m->hdr[TIPC_MEDIA_ADDR_OFFSET];
	663	}
b97bf3fd	664
c4307285	665	/*
b97bf3fd PL	666	* Word 9
b97bf3fd PL	667	*/
b97bf3fd PL	668	static inline u32 msg_msgcnt(struct tipc_msg *m)
	669	{
	670	return msg_bits(m, 9, 16, 0xffff);
	671	}
	672
	673	static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n)
	674	{
	675	msg_set_bits(m, 9, 16, 0xffff, n);
	676	}
	677
	678	static inline u32 msg_bcast_tag(struct tipc_msg *m)
	679	{
	680	return msg_bits(m, 9, 16, 0xffff);
	681	}
	682
	683	static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n)
	684	{
	685	msg_set_bits(m, 9, 16, 0xffff, n);
	686	}
	687
c4307285	688	static inline u32 msg_max_pkt(struct tipc_msg *m)
b97bf3fd	689	{
a02cec21	690	return msg_bits(m, 9, 16, 0xffff) * 4;
b97bf3fd PL	691	}
b97bf3fd PL	692
c4307285	693	static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
b97bf3fd PL	694	{
	695	msg_set_bits(m, 9, 16, 0xffff, (n / 4));
	696	}
	697
	698	static inline u32 msg_link_tolerance(struct tipc_msg *m)
	699	{
	700	return msg_bits(m, 9, 0, 0xffff);
	701	}
	702
	703	static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
	704	{
	705	msg_set_bits(m, 9, 0, 0xffff, n);
	706	}
	707
4f1688b2 JPM	708	static inline u32 tipc_msg_tot_importance(struct tipc_msg *m)
	709	{
	710	if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT))
	711	return msg_importance(msg_get_wrapped(m));
	712	return msg_importance(m);
	713	}
	714
	715	static inline u32 msg_tot_origport(struct tipc_msg *m)
	716	{
	717	if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT))
	718	return msg_origport(msg_get_wrapped(m));
	719	return msg_origport(m);
	720	}
	721
8db1bae3 JPM	722	bool tipc_msg_reverse(struct sk_buff buf, u32 dnode, int err);
8db1bae3 JPM	723
5a379074 JPM	724	int tipc_msg_eval(struct sk_buff buf, u32 dnode);
5a379074 JPM	725
ae8509c4 PG	726	void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
ae8509c4 PG	727	u32 destnode);
4f1688b2	728
1dd0bd2b JPM	729	struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
	730	uint data_sz, u32 dnode, u32 onode,
	731	u32 dport, u32 oport, int errcode);
	732
37e22164 JPM	733	int tipc_buf_append(struct sk_buff headbuf, struct sk_buff buf);
37e22164 JPM	734
58dc55f2	735	bool tipc_msg_bundle(struct sk_buff_head list, struct sk_buff skb, u32 mtu);
4f1688b2	736
58dc55f2 YX	737	bool tipc_msg_make_bundle(struct sk_buff_head list, struct sk_buff skb,
58dc55f2 YX	738	u32 mtu, u32 dnode);
4f1688b2	739
a6ca1094 YX	740	int tipc_msg_build(struct tipc_msg mhdr, struct msghdr m, int offset,
a6ca1094 YX	741	int dsz, int mtu, struct sk_buff_head *list);
067608e9	742
a6ca1094	743	struct sk_buff tipc_msg_reassemble(struct sk_buff_head list);
078bec82	744
b97bf3fd	745	#endif