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Per Lidenea714cc2006-01-11 12:28:47 +01001/*
Ying Xue8941bbc2013-06-17 10:54:36 -04002 * include/uapi/linux/tipc_config.h: Header for TIPC configuration interface
Allan Stephens0e659672010-12-31 18:59:32 +00003 *
Per Liden9da1c8b2006-01-11 18:40:41 +01004 * Copyright (c) 2003-2006, Ericsson AB
Allan Stephens77c81e02011-01-18 13:37:09 -05005 * Copyright (c) 2005-2007, 2010-2011, Wind River Systems
Per Lidenea714cc2006-01-11 12:28:47 +01006 * All rights reserved.
7 *
Per Liden9ea1fd32006-01-11 13:30:43 +01008 * Redistribution and use in source and binary forms, with or without
Per Lidenea714cc2006-01-11 12:28:47 +01009 * modification, are permitted provided that the following conditions are met:
10 *
Per Liden9ea1fd32006-01-11 13:30:43 +010011 * 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.
Per Lidenea714cc2006-01-11 12:28:47 +010019 *
Per Liden9ea1fd32006-01-11 13:30:43 +010020 * 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
Per Lidenea714cc2006-01-11 12:28:47 +010034 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#ifndef _LINUX_TIPC_CONFIG_H_
38#define _LINUX_TIPC_CONFIG_H_
39
40#include <linux/types.h>
41#include <linux/string.h>
Erik Hugne78acb1f2014-04-24 16:26:47 +020042#include <linux/tipc.h>
Per Lidenea714cc2006-01-11 12:28:47 +010043#include <asm/byteorder.h>
44
Ben Hutchings38286202011-08-24 18:45:14 +000045#ifndef __KERNEL__
46#include <arpa/inet.h> /* for ntohs etc. */
47#endif
48
Per Lidenea714cc2006-01-11 12:28:47 +010049/*
50 * Configuration
51 *
52 * All configuration management messaging involves sending a request message
53 * to the TIPC configuration service on a node, which sends a reply message
54 * back. (In the future multi-message replies may be supported.)
55 *
56 * Both request and reply messages consist of a transport header and payload.
57 * The transport header contains info about the desired operation;
58 * the payload consists of zero or more type/length/value (TLV) items
59 * which specify parameters or results for the operation.
60 *
61 * For many operations, the request and reply messages have a fixed number
Allan Stephens0e659672010-12-31 18:59:32 +000062 * of TLVs (usually zero or one); however, some reply messages may return
Per Lidenea714cc2006-01-11 12:28:47 +010063 * a variable number of TLVs. A failed request is denoted by the presence
64 * of an "error string" TLV in the reply message instead of the TLV(s) the
65 * reply should contain if the request succeeds.
66 */
Allan Stephens0e659672010-12-31 18:59:32 +000067
68/*
Per Lidenea714cc2006-01-11 12:28:47 +010069 * Public commands:
70 * May be issued by any process.
Allan Stephens0e659672010-12-31 18:59:32 +000071 * Accepted by own node, or by remote node only if remote management enabled.
Per Lidenea714cc2006-01-11 12:28:47 +010072 */
Allan Stephens0e659672010-12-31 18:59:32 +000073
74#define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */
Per Lidenea714cc2006-01-11 12:28:47 +010075#define TIPC_CMD_GET_NODES 0x0001 /* tx net_addr, rx node_info(s) */
76#define TIPC_CMD_GET_MEDIA_NAMES 0x0002 /* tx none, rx media_name(s) */
77#define TIPC_CMD_GET_BEARER_NAMES 0x0003 /* tx none, rx bearer_name(s) */
78#define TIPC_CMD_GET_LINKS 0x0004 /* tx net_addr, rx link_info(s) */
79#define TIPC_CMD_SHOW_NAME_TABLE 0x0005 /* tx name_tbl_query, rx ultra_string */
80#define TIPC_CMD_SHOW_PORTS 0x0006 /* tx none, rx ultra_string */
81#define TIPC_CMD_SHOW_LINK_STATS 0x000B /* tx link_name, rx ultra_string */
Allan Stephens107e7be2010-05-11 14:30:08 +000082#define TIPC_CMD_SHOW_STATS 0x000F /* tx unsigned, rx ultra_string */
Per Lidenea714cc2006-01-11 12:28:47 +010083
Allan Stephens0e659672010-12-31 18:59:32 +000084/*
Per Lidenea714cc2006-01-11 12:28:47 +010085 * Protected commands:
86 * May only be issued by "network administration capable" process.
87 * Accepted by own node, or by remote node only if remote management enabled
Allan Stephens0e659672010-12-31 18:59:32 +000088 * and this node is zone manager.
Per Lidenea714cc2006-01-11 12:28:47 +010089 */
90
91#define TIPC_CMD_GET_REMOTE_MNG 0x4003 /* tx none, rx unsigned */
92#define TIPC_CMD_GET_MAX_PORTS 0x4004 /* tx none, rx unsigned */
Ying Xuee6a04b12012-08-16 12:09:14 +000093#define TIPC_CMD_GET_MAX_PUBL 0x4005 /* obsoleted */
Ying Xue34f256c2012-08-16 12:09:13 +000094#define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* obsoleted */
Allan Stephens51f98a82010-12-31 18:59:16 +000095#define TIPC_CMD_GET_MAX_ZONES 0x4007 /* obsoleted */
Allan Stephens8f92df62010-12-31 18:59:19 +000096#define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* obsoleted */
Allan Stephensf831c962011-02-25 14:22:11 -050097#define TIPC_CMD_GET_MAX_NODES 0x4009 /* obsoleted */
Allan Stephens08c80e92010-12-31 18:59:17 +000098#define TIPC_CMD_GET_MAX_SLAVES 0x400A /* obsoleted */
Per Lidenea714cc2006-01-11 12:28:47 +010099#define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */
100
101#define TIPC_CMD_ENABLE_BEARER 0x4101 /* tx bearer_config, rx none */
102#define TIPC_CMD_DISABLE_BEARER 0x4102 /* tx bearer_name, rx none */
103#define TIPC_CMD_SET_LINK_TOL 0x4107 /* tx link_config, rx none */
104#define TIPC_CMD_SET_LINK_PRI 0x4108 /* tx link_config, rx none */
105#define TIPC_CMD_SET_LINK_WINDOW 0x4109 /* tx link_config, rx none */
Erik Hugne869dd462012-06-29 00:50:24 -0400106#define TIPC_CMD_SET_LOG_SIZE 0x410A /* obsoleted */
107#define TIPC_CMD_DUMP_LOG 0x410B /* obsoleted */
Per Lidenea714cc2006-01-11 12:28:47 +0100108#define TIPC_CMD_RESET_LINK_STATS 0x410C /* tx link_name, rx none */
109
Allan Stephens0e659672010-12-31 18:59:32 +0000110/*
Per Lidenea714cc2006-01-11 12:28:47 +0100111 * Private commands:
112 * May only be issued by "network administration capable" process.
Allan Stephens0e659672010-12-31 18:59:32 +0000113 * Accepted by own node only; cannot be used on a remote node.
Per Lidenea714cc2006-01-11 12:28:47 +0100114 */
115
116#define TIPC_CMD_SET_NODE_ADDR 0x8001 /* tx net_addr, rx none */
Per Lidenea714cc2006-01-11 12:28:47 +0100117#define TIPC_CMD_SET_REMOTE_MNG 0x8003 /* tx unsigned, rx none */
118#define TIPC_CMD_SET_MAX_PORTS 0x8004 /* tx unsigned, rx none */
Ying Xuee6a04b12012-08-16 12:09:14 +0000119#define TIPC_CMD_SET_MAX_PUBL 0x8005 /* obsoleted */
Ying Xue34f256c2012-08-16 12:09:13 +0000120#define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* obsoleted */
Allan Stephens51f98a82010-12-31 18:59:16 +0000121#define TIPC_CMD_SET_MAX_ZONES 0x8007 /* obsoleted */
Allan Stephens8f92df62010-12-31 18:59:19 +0000122#define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* obsoleted */
Allan Stephensf831c962011-02-25 14:22:11 -0500123#define TIPC_CMD_SET_MAX_NODES 0x8009 /* obsoleted */
Allan Stephens08c80e92010-12-31 18:59:17 +0000124#define TIPC_CMD_SET_MAX_SLAVES 0x800A /* obsoleted */
Per Lidenea714cc2006-01-11 12:28:47 +0100125#define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */
126
127/*
Allan Stephens59f0c452008-05-21 14:52:30 -0700128 * Reserved commands:
129 * May not be issued by any process.
130 * Used internally by TIPC.
131 */
132
133#define TIPC_CMD_NOT_NET_ADMIN 0xC001 /* tx none, rx none */
134
135/*
Per Lidenea714cc2006-01-11 12:28:47 +0100136 * TLV types defined for TIPC
137 */
138
139#define TIPC_TLV_NONE 0 /* no TLV present */
140#define TIPC_TLV_VOID 1 /* empty TLV (0 data bytes)*/
141#define TIPC_TLV_UNSIGNED 2 /* 32-bit integer */
142#define TIPC_TLV_STRING 3 /* char[128] (max) */
143#define TIPC_TLV_LARGE_STRING 4 /* char[2048] (max) */
144#define TIPC_TLV_ULTRA_STRING 5 /* char[32768] (max) */
145
146#define TIPC_TLV_ERROR_STRING 16 /* char[128] containing "error code" */
Allan Stephens0e659672010-12-31 18:59:32 +0000147#define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting <Z.C.N> */
Per Lidenea714cc2006-01-11 12:28:47 +0100148#define TIPC_TLV_MEDIA_NAME 18 /* char[TIPC_MAX_MEDIA_NAME] */
149#define TIPC_TLV_BEARER_NAME 19 /* char[TIPC_MAX_BEARER_NAME] */
150#define TIPC_TLV_LINK_NAME 20 /* char[TIPC_MAX_LINK_NAME] */
151#define TIPC_TLV_NODE_INFO 21 /* struct tipc_node_info */
152#define TIPC_TLV_LINK_INFO 22 /* struct tipc_link_info */
Allan Stephens0e659672010-12-31 18:59:32 +0000153#define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */
154#define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */
Per Lidenea714cc2006-01-11 12:28:47 +0100155#define TIPC_TLV_NAME_TBL_QUERY 25 /* struct tipc_name_table_query */
Allan Stephens0e659672010-12-31 18:59:32 +0000156#define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */
Per Lidenea714cc2006-01-11 12:28:47 +0100157
158/*
Per Liden16cb4b32006-01-13 22:22:22 +0100159 * Link priority limits (min, default, max, media default)
Per Lidenea714cc2006-01-11 12:28:47 +0100160 */
161
Per Liden16cb4b32006-01-13 22:22:22 +0100162#define TIPC_MIN_LINK_PRI 0
163#define TIPC_DEF_LINK_PRI 10
164#define TIPC_MAX_LINK_PRI 31
165#define TIPC_MEDIA_LINK_PRI (TIPC_MAX_LINK_PRI + 1)
Per Lidenea714cc2006-01-11 12:28:47 +0100166
167/*
168 * Link tolerance limits (min, default, max), in ms
169 */
170
171#define TIPC_MIN_LINK_TOL 50
172#define TIPC_DEF_LINK_TOL 1500
173#define TIPC_MAX_LINK_TOL 30000
174
Allan Stephens5413b4c2011-01-18 13:24:55 -0500175#if (TIPC_MIN_LINK_TOL < 16)
176#error "TIPC_MIN_LINK_TOL is too small (abort limit may be NaN)"
177#endif
178
Per Lidenea714cc2006-01-11 12:28:47 +0100179/*
180 * Link window limits (min, default, max), in packets
181 */
182
183#define TIPC_MIN_LINK_WIN 16
184#define TIPC_DEF_LINK_WIN 50
Erik Hugnea6eacef2014-06-25 10:07:05 +0200185#define TIPC_MAX_LINK_WIN 8191
Per Lidenea714cc2006-01-11 12:28:47 +0100186
187
188struct tipc_node_info {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800189 __be32 addr; /* network address of node */
190 __be32 up; /* 0=down, 1= up */
Per Lidenea714cc2006-01-11 12:28:47 +0100191};
192
193struct tipc_link_info {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800194 __be32 dest; /* network address of peer node */
195 __be32 up; /* 0=down, 1=up */
Per Lidenea714cc2006-01-11 12:28:47 +0100196 char str[TIPC_MAX_LINK_NAME]; /* link name */
197};
198
199struct tipc_bearer_config {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800200 __be32 priority; /* Range [1,31]. Override per link */
Allan Stephens50d3e632011-02-28 14:56:15 -0500201 __be32 disc_domain; /* <Z.C.N> describing desired nodes */
Per Lidenea714cc2006-01-11 12:28:47 +0100202 char name[TIPC_MAX_BEARER_NAME];
203};
204
205struct tipc_link_config {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800206 __be32 value;
Per Lidenea714cc2006-01-11 12:28:47 +0100207 char name[TIPC_MAX_LINK_NAME];
208};
209
210#define TIPC_NTQ_ALLTYPES 0x80000000
211
212struct tipc_name_table_query {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800213 __be32 depth; /* 1:type, 2:+name info, 3:+port info, 4+:+debug info */
214 __be32 type; /* {t,l,u} info ignored if high bit of "depth" is set */
215 __be32 lowbound; /* (i.e. displays all entries of name table) */
216 __be32 upbound;
Per Lidenea714cc2006-01-11 12:28:47 +0100217};
218
219/*
Allan Stephens0e659672010-12-31 18:59:32 +0000220 * The error string TLV is a null-terminated string describing the cause
Per Lidenea714cc2006-01-11 12:28:47 +0100221 * of the request failure. To simplify error processing (and to save space)
222 * the first character of the string can be a special error code character
223 * (lying by the range 0x80 to 0xFF) which represents a pre-defined reason.
224 */
225
226#define TIPC_CFG_TLV_ERROR "\x80" /* request contains incorrect TLV(s) */
227#define TIPC_CFG_NOT_NET_ADMIN "\x81" /* must be network administrator */
228#define TIPC_CFG_NOT_ZONE_MSTR "\x82" /* must be zone master */
229#define TIPC_CFG_NO_REMOTE "\x83" /* remote management not enabled */
230#define TIPC_CFG_NOT_SUPPORTED "\x84" /* request is not supported by TIPC */
231#define TIPC_CFG_INVALID_VALUE "\x85" /* request has invalid argument value */
232
Per Lidenea714cc2006-01-11 12:28:47 +0100233/*
234 * A TLV consists of a descriptor, followed by the TLV value.
Allan Stephens0e659672010-12-31 18:59:32 +0000235 * TLV descriptor fields are stored in network byte order;
Per Lidenea714cc2006-01-11 12:28:47 +0100236 * TLV values must also be stored in network byte order (where applicable).
237 * TLV descriptors must be aligned to addresses which are multiple of 4,
238 * so up to 3 bytes of padding may exist at the end of the TLV value area.
239 * There must not be any padding between the TLV descriptor and its value.
240 */
241
242struct tlv_desc {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800243 __be16 tlv_len; /* TLV length (descriptor + value) */
244 __be16 tlv_type; /* TLV identifier */
Per Lidenea714cc2006-01-11 12:28:47 +0100245};
246
247#define TLV_ALIGNTO 4
248
249#define TLV_ALIGN(datalen) (((datalen)+(TLV_ALIGNTO-1)) & ~(TLV_ALIGNTO-1))
250#define TLV_LENGTH(datalen) (sizeof(struct tlv_desc) + (datalen))
251#define TLV_SPACE(datalen) (TLV_ALIGN(TLV_LENGTH(datalen)))
252#define TLV_DATA(tlv) ((void *)((char *)(tlv) + TLV_LENGTH(0)))
253
254static inline int TLV_OK(const void *tlv, __u16 space)
255{
256 /*
257 * Would also like to check that "tlv" is a multiple of 4,
258 * but don't know how to do this in a portable way.
259 * - Tried doing (!(tlv & (TLV_ALIGNTO-1))), but GCC compiler
260 * won't allow binary "&" with a pointer.
261 * - Tried casting "tlv" to integer type, but causes warning about size
262 * mismatch when pointer is bigger than chosen type (int, long, ...).
263 */
264
265 return (space >= TLV_SPACE(0)) &&
266 (ntohs(((struct tlv_desc *)tlv)->tlv_len) <= space);
267}
268
269static inline int TLV_CHECK(const void *tlv, __u16 space, __u16 exp_type)
270{
Allan Stephens0e659672010-12-31 18:59:32 +0000271 return TLV_OK(tlv, space) &&
Per Lidenea714cc2006-01-11 12:28:47 +0100272 (ntohs(((struct tlv_desc *)tlv)->tlv_type) == exp_type);
273}
274
Richard Alped0796d12015-02-09 09:50:04 +0100275static inline int TLV_GET_LEN(struct tlv_desc *tlv)
276{
277 return ntohs(tlv->tlv_len);
278}
279
Richard Alpef2b3b2d2015-02-09 09:50:06 +0100280static inline void TLV_SET_LEN(struct tlv_desc *tlv, __u16 len)
281{
282 tlv->tlv_len = htons(len);
283}
284
Richard Alpe9ab15462015-02-09 09:50:05 +0100285static inline int TLV_CHECK_TYPE(struct tlv_desc *tlv, __u16 type)
286{
287 return (ntohs(tlv->tlv_type) == type);
288}
289
Richard Alpef2b3b2d2015-02-09 09:50:06 +0100290static inline void TLV_SET_TYPE(struct tlv_desc *tlv, __u16 type)
291{
292 tlv->tlv_type = htons(type);
293}
294
Per Lidenea714cc2006-01-11 12:28:47 +0100295static inline int TLV_SET(void *tlv, __u16 type, void *data, __u16 len)
296{
297 struct tlv_desc *tlv_ptr;
298 int tlv_len;
299
300 tlv_len = TLV_LENGTH(len);
301 tlv_ptr = (struct tlv_desc *)tlv;
302 tlv_ptr->tlv_type = htons(type);
303 tlv_ptr->tlv_len = htons(tlv_len);
304 if (len && data)
305 memcpy(TLV_DATA(tlv_ptr), data, tlv_len);
306 return TLV_SPACE(len);
307}
308
309/*
Allan Stephens0e659672010-12-31 18:59:32 +0000310 * A TLV list descriptor simplifies processing of messages
Per Lidenea714cc2006-01-11 12:28:47 +0100311 * containing multiple TLVs.
312 */
313
314struct tlv_list_desc {
315 struct tlv_desc *tlv_ptr; /* ptr to current TLV */
316 __u32 tlv_space; /* # bytes from curr TLV to list end */
317};
318
Allan Stephens0e659672010-12-31 18:59:32 +0000319static inline void TLV_LIST_INIT(struct tlv_list_desc *list,
Per Lidenea714cc2006-01-11 12:28:47 +0100320 void *data, __u32 space)
321{
322 list->tlv_ptr = (struct tlv_desc *)data;
323 list->tlv_space = space;
324}
Allan Stephens0e659672010-12-31 18:59:32 +0000325
Per Lidenea714cc2006-01-11 12:28:47 +0100326static inline int TLV_LIST_EMPTY(struct tlv_list_desc *list)
Allan Stephens0e659672010-12-31 18:59:32 +0000327{
Per Lidenea714cc2006-01-11 12:28:47 +0100328 return (list->tlv_space == 0);
329}
330
331static inline int TLV_LIST_CHECK(struct tlv_list_desc *list, __u16 exp_type)
332{
333 return TLV_CHECK(list->tlv_ptr, list->tlv_space, exp_type);
334}
335
336static inline void *TLV_LIST_DATA(struct tlv_list_desc *list)
337{
338 return TLV_DATA(list->tlv_ptr);
339}
340
341static inline void TLV_LIST_STEP(struct tlv_list_desc *list)
342{
343 __u16 tlv_space = TLV_ALIGN(ntohs(list->tlv_ptr->tlv_len));
344
Allan Stephens0e659672010-12-31 18:59:32 +0000345 list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space);
Per Lidenea714cc2006-01-11 12:28:47 +0100346 list->tlv_space -= tlv_space;
347}
348
349/*
350 * Configuration messages exchanged via NETLINK_GENERIC use the following
351 * family id, name, version and command.
352 */
353#define TIPC_GENL_NAME "TIPC"
354#define TIPC_GENL_VERSION 0x1
355#define TIPC_GENL_CMD 0x1
356
357/*
358 * TIPC specific header used in NETLINK_GENERIC requests.
359 */
360struct tipc_genlmsghdr {
361 __u32 dest; /* Destination address */
362 __u16 cmd; /* Command */
363 __u16 reserved; /* Unused */
364};
365
366#define TIPC_GENL_HDRLEN NLMSG_ALIGN(sizeof(struct tipc_genlmsghdr))
367
368/*
Allan Stephens0e659672010-12-31 18:59:32 +0000369 * Configuration messages exchanged via TIPC sockets use the TIPC configuration
370 * message header, which is defined below. This structure is analogous
371 * to the Netlink message header, but fields are stored in network byte order
372 * and no padding is permitted between the header and the message data
Per Lidenea714cc2006-01-11 12:28:47 +0100373 * that follows.
374 */
375
Allan Stephens0e659672010-12-31 18:59:32 +0000376struct tipc_cfg_msg_hdr {
Al Viro3e6c8cd2006-11-08 00:19:09 -0800377 __be32 tcm_len; /* Message length (including header) */
378 __be16 tcm_type; /* Command type */
379 __be16 tcm_flags; /* Additional flags */
Per Lidenea714cc2006-01-11 12:28:47 +0100380 char tcm_reserved[8]; /* Unused */
381};
382
383#define TCM_F_REQUEST 0x1 /* Flag: Request message */
384#define TCM_F_MORE 0x2 /* Flag: Message to be continued */
385
386#define TCM_ALIGN(datalen) (((datalen)+3) & ~3)
387#define TCM_LENGTH(datalen) (sizeof(struct tipc_cfg_msg_hdr) + datalen)
388#define TCM_SPACE(datalen) (TCM_ALIGN(TCM_LENGTH(datalen)))
389#define TCM_DATA(tcm_hdr) ((void *)((char *)(tcm_hdr) + TCM_LENGTH(0)))
390
391static inline int TCM_SET(void *msg, __u16 cmd, __u16 flags,
392 void *data, __u16 data_len)
393{
394 struct tipc_cfg_msg_hdr *tcm_hdr;
395 int msg_len;
396
397 msg_len = TCM_LENGTH(data_len);
398 tcm_hdr = (struct tipc_cfg_msg_hdr *)msg;
399 tcm_hdr->tcm_len = htonl(msg_len);
400 tcm_hdr->tcm_type = htons(cmd);
401 tcm_hdr->tcm_flags = htons(flags);
402 if (data_len && data)
403 memcpy(TCM_DATA(msg), data, data_len);
404 return TCM_SPACE(data_len);
405}
406
407#endif