1 /*
2 * net/tipc/msg.h: Include file for TIPC message header routines
3 *
4 * Copyright (c) 2000-2007, Ericsson AB
5 * Copyright (c) 2005-2008, 2010-2011, Wind River Systems
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
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.
19 *
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
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 #ifndef _TIPC_MSG_H
38 #define _TIPC_MSG_H
39
40 #include "bearer.h"
41
42 #define TIPC_VERSION 2
43
44 /*
45 * TIPC user data message header format, version 2:
46 *
47 *
48 * 1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0
49 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
50 * w0:|vers | user |hdr sz |n|d|s|-| message size |
51 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
52 * w1:|mstyp| error |rer cnt|lsc|opt p| broadcast ack no |
53 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
54 * w2:| link level ack no | broadcast/link level seq no |
55 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
56 * w3:| previous node |
57 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
58 * w4:| originating port |
59 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
60 * w5:| destination port |
61 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
62 * w6:| originating node |
63 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
64 * w7:| destination node |
65 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
66 * w8:| name type / transport sequence number |
67 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
68 * w9:| name instance/multicast lower bound |
69 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
70 * wA:| multicast upper bound |
71 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
72 * / /
73 * \ options \
74 * / /
75 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
76 *
77 */
78
79 #define TIPC_CONN_MSG 0
80 #define TIPC_MCAST_MSG 1
81 #define TIPC_NAMED_MSG 2
82 #define TIPC_DIRECT_MSG 3
83
84
85 #define SHORT_H_SIZE 24 /* Connected, in-cluster messages */
86 #define DIR_MSG_H_SIZE 32 /* Directly addressed messages */
87 #define LONG_H_SIZE 40 /* Named messages */
88 #define MCAST_H_SIZE 44 /* Multicast messages */
89 #define INT_H_SIZE 40 /* Internal messages */
90 #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */
91 #define MAX_H_SIZE 60 /* Largest possible TIPC header size */
92
93 #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)
94
95
96 struct tipc_msg {
97 __be32 hdr[15];
98 };
99
100
msg_word(struct tipc_msg * m,u32 pos)101 static inline u32 msg_word(struct tipc_msg *m, u32 pos)
102 {
103 return ntohl(m->hdr[pos]);
104 }
105
msg_set_word(struct tipc_msg * m,u32 w,u32 val)106 static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
107 {
108 m->hdr[w] = htonl(val);
109 }
110
msg_bits(struct tipc_msg * m,u32 w,u32 pos,u32 mask)111 static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
112 {
113 return (msg_word(m, w) >> pos) & mask;
114 }
115
msg_set_bits(struct tipc_msg * m,u32 w,u32 pos,u32 mask,u32 val)116 static inline void msg_set_bits(struct tipc_msg *m, u32 w,
117 u32 pos, u32 mask, u32 val)
118 {
119 val = (val & mask) << pos;
120 mask = mask << pos;
121 m->hdr[w] &= ~htonl(mask);
122 m->hdr[w] |= htonl(val);
123 }
124
msg_swap_words(struct tipc_msg * msg,u32 a,u32 b)125 static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
126 {
127 u32 temp = msg->hdr[a];
128
129 msg->hdr[a] = msg->hdr[b];
130 msg->hdr[b] = temp;
131 }
132
133 /*
134 * Word 0
135 */
136
msg_version(struct tipc_msg * m)137 static inline u32 msg_version(struct tipc_msg *m)
138 {
139 return msg_bits(m, 0, 29, 7);
140 }
141
msg_set_version(struct tipc_msg * m)142 static inline void msg_set_version(struct tipc_msg *m)
143 {
144 msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
145 }
146
msg_user(struct tipc_msg * m)147 static inline u32 msg_user(struct tipc_msg *m)
148 {
149 return msg_bits(m, 0, 25, 0xf);
150 }
151
msg_isdata(struct tipc_msg * m)152 static inline u32 msg_isdata(struct tipc_msg *m)
153 {
154 return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
155 }
156
msg_set_user(struct tipc_msg * m,u32 n)157 static inline void msg_set_user(struct tipc_msg *m, u32 n)
158 {
159 msg_set_bits(m, 0, 25, 0xf, n);
160 }
161
msg_importance(struct tipc_msg * m)162 static inline u32 msg_importance(struct tipc_msg *m)
163 {
164 return msg_bits(m, 0, 25, 0xf);
165 }
166
msg_set_importance(struct tipc_msg * m,u32 i)167 static inline void msg_set_importance(struct tipc_msg *m, u32 i)
168 {
169 msg_set_user(m, i);
170 }
171
msg_hdr_sz(struct tipc_msg * m)172 static inline u32 msg_hdr_sz(struct tipc_msg *m)
173 {
174 return msg_bits(m, 0, 21, 0xf) << 2;
175 }
176
msg_set_hdr_sz(struct tipc_msg * m,u32 n)177 static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
178 {
179 msg_set_bits(m, 0, 21, 0xf, n>>2);
180 }
181
msg_size(struct tipc_msg * m)182 static inline u32 msg_size(struct tipc_msg *m)
183 {
184 return msg_bits(m, 0, 0, 0x1ffff);
185 }
186
msg_data_sz(struct tipc_msg * m)187 static inline u32 msg_data_sz(struct tipc_msg *m)
188 {
189 return msg_size(m) - msg_hdr_sz(m);
190 }
191
msg_non_seq(struct tipc_msg * m)192 static inline int msg_non_seq(struct tipc_msg *m)
193 {
194 return msg_bits(m, 0, 20, 1);
195 }
196
msg_set_non_seq(struct tipc_msg * m,u32 n)197 static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
198 {
199 msg_set_bits(m, 0, 20, 1, n);
200 }
201
msg_dest_droppable(struct tipc_msg * m)202 static inline int msg_dest_droppable(struct tipc_msg *m)
203 {
204 return msg_bits(m, 0, 19, 1);
205 }
206
msg_set_dest_droppable(struct tipc_msg * m,u32 d)207 static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
208 {
209 msg_set_bits(m, 0, 19, 1, d);
210 }
211
msg_src_droppable(struct tipc_msg * m)212 static inline int msg_src_droppable(struct tipc_msg *m)
213 {
214 return msg_bits(m, 0, 18, 1);
215 }
216
msg_set_src_droppable(struct tipc_msg * m,u32 d)217 static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
218 {
219 msg_set_bits(m, 0, 18, 1, d);
220 }
221
msg_set_size(struct tipc_msg * m,u32 sz)222 static inline void msg_set_size(struct tipc_msg *m, u32 sz)
223 {
224 m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
225 }
226
227
228 /*
229 * Word 1
230 */
231
msg_type(struct tipc_msg * m)232 static inline u32 msg_type(struct tipc_msg *m)
233 {
234 return msg_bits(m, 1, 29, 0x7);
235 }
236
msg_set_type(struct tipc_msg * m,u32 n)237 static inline void msg_set_type(struct tipc_msg *m, u32 n)
238 {
239 msg_set_bits(m, 1, 29, 0x7, n);
240 }
241
msg_named(struct tipc_msg * m)242 static inline u32 msg_named(struct tipc_msg *m)
243 {
244 return msg_type(m) == TIPC_NAMED_MSG;
245 }
246
msg_mcast(struct tipc_msg * m)247 static inline u32 msg_mcast(struct tipc_msg *m)
248 {
249 return msg_type(m) == TIPC_MCAST_MSG;
250 }
251
msg_connected(struct tipc_msg * m)252 static inline u32 msg_connected(struct tipc_msg *m)
253 {
254 return msg_type(m) == TIPC_CONN_MSG;
255 }
256
msg_errcode(struct tipc_msg * m)257 static inline u32 msg_errcode(struct tipc_msg *m)
258 {
259 return msg_bits(m, 1, 25, 0xf);
260 }
261
msg_set_errcode(struct tipc_msg * m,u32 err)262 static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
263 {
264 msg_set_bits(m, 1, 25, 0xf, err);
265 }
266
msg_reroute_cnt(struct tipc_msg * m)267 static inline u32 msg_reroute_cnt(struct tipc_msg *m)
268 {
269 return msg_bits(m, 1, 21, 0xf);
270 }
271
msg_incr_reroute_cnt(struct tipc_msg * m)272 static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
273 {
274 msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
275 }
276
msg_reset_reroute_cnt(struct tipc_msg * m)277 static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
278 {
279 msg_set_bits(m, 1, 21, 0xf, 0);
280 }
281
msg_lookup_scope(struct tipc_msg * m)282 static inline u32 msg_lookup_scope(struct tipc_msg *m)
283 {
284 return msg_bits(m, 1, 19, 0x3);
285 }
286
msg_set_lookup_scope(struct tipc_msg * m,u32 n)287 static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
288 {
289 msg_set_bits(m, 1, 19, 0x3, n);
290 }
291
msg_bcast_ack(struct tipc_msg * m)292 static inline u32 msg_bcast_ack(struct tipc_msg *m)
293 {
294 return msg_bits(m, 1, 0, 0xffff);
295 }
296
msg_set_bcast_ack(struct tipc_msg * m,u32 n)297 static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n)
298 {
299 msg_set_bits(m, 1, 0, 0xffff, n);
300 }
301
302
303 /*
304 * Word 2
305 */
306
msg_ack(struct tipc_msg * m)307 static inline u32 msg_ack(struct tipc_msg *m)
308 {
309 return msg_bits(m, 2, 16, 0xffff);
310 }
311
msg_set_ack(struct tipc_msg * m,u32 n)312 static inline void msg_set_ack(struct tipc_msg *m, u32 n)
313 {
314 msg_set_bits(m, 2, 16, 0xffff, n);
315 }
316
msg_seqno(struct tipc_msg * m)317 static inline u32 msg_seqno(struct tipc_msg *m)
318 {
319 return msg_bits(m, 2, 0, 0xffff);
320 }
321
msg_set_seqno(struct tipc_msg * m,u32 n)322 static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
323 {
324 msg_set_bits(m, 2, 0, 0xffff, n);
325 }
326
327 /*
328 * TIPC may utilize the "link ack #" and "link seq #" fields of a short
329 * message header to hold the destination node for the message, since the
330 * normal "dest node" field isn't present. This cache is only referenced
331 * when required, so populating the cache of a longer message header is
332 * harmless (as long as the header has the two link sequence fields present).
333 *
334 * Note: Host byte order is OK here, since the info never goes off-card.
335 */
336
msg_destnode_cache(struct tipc_msg * m)337 static inline u32 msg_destnode_cache(struct tipc_msg *m)
338 {
339 return m->hdr[2];
340 }
341
msg_set_destnode_cache(struct tipc_msg * m,u32 dnode)342 static inline void msg_set_destnode_cache(struct tipc_msg *m, u32 dnode)
343 {
344 m->hdr[2] = dnode;
345 }
346
347 /*
348 * Words 3-10
349 */
350
351
msg_prevnode(struct tipc_msg * m)352 static inline u32 msg_prevnode(struct tipc_msg *m)
353 {
354 return msg_word(m, 3);
355 }
356
msg_set_prevnode(struct tipc_msg * m,u32 a)357 static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
358 {
359 msg_set_word(m, 3, a);
360 }
361
msg_origport(struct tipc_msg * m)362 static inline u32 msg_origport(struct tipc_msg *m)
363 {
364 return msg_word(m, 4);
365 }
366
msg_set_origport(struct tipc_msg * m,u32 p)367 static inline void msg_set_origport(struct tipc_msg *m, u32 p)
368 {
369 msg_set_word(m, 4, p);
370 }
371
msg_destport(struct tipc_msg * m)372 static inline u32 msg_destport(struct tipc_msg *m)
373 {
374 return msg_word(m, 5);
375 }
376
msg_set_destport(struct tipc_msg * m,u32 p)377 static inline void msg_set_destport(struct tipc_msg *m, u32 p)
378 {
379 msg_set_word(m, 5, p);
380 }
381
msg_mc_netid(struct tipc_msg * m)382 static inline u32 msg_mc_netid(struct tipc_msg *m)
383 {
384 return msg_word(m, 5);
385 }
386
msg_set_mc_netid(struct tipc_msg * m,u32 p)387 static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
388 {
389 msg_set_word(m, 5, p);
390 }
391
msg_short(struct tipc_msg * m)392 static inline int msg_short(struct tipc_msg *m)
393 {
394 return msg_hdr_sz(m) == 24;
395 }
396
msg_orignode(struct tipc_msg * m)397 static inline u32 msg_orignode(struct tipc_msg *m)
398 {
399 if (likely(msg_short(m)))
400 return msg_prevnode(m);
401 return msg_word(m, 6);
402 }
403
msg_set_orignode(struct tipc_msg * m,u32 a)404 static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
405 {
406 msg_set_word(m, 6, a);
407 }
408
msg_destnode(struct tipc_msg * m)409 static inline u32 msg_destnode(struct tipc_msg *m)
410 {
411 return msg_word(m, 7);
412 }
413
msg_set_destnode(struct tipc_msg * m,u32 a)414 static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
415 {
416 msg_set_word(m, 7, a);
417 }
418
msg_is_dest(struct tipc_msg * m,u32 d)419 static inline int msg_is_dest(struct tipc_msg *m, u32 d)
420 {
421 return msg_short(m) || (msg_destnode(m) == d);
422 }
423
msg_nametype(struct tipc_msg * m)424 static inline u32 msg_nametype(struct tipc_msg *m)
425 {
426 return msg_word(m, 8);
427 }
428
msg_set_nametype(struct tipc_msg * m,u32 n)429 static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
430 {
431 msg_set_word(m, 8, n);
432 }
433
msg_nameinst(struct tipc_msg * m)434 static inline u32 msg_nameinst(struct tipc_msg *m)
435 {
436 return msg_word(m, 9);
437 }
438
msg_namelower(struct tipc_msg * m)439 static inline u32 msg_namelower(struct tipc_msg *m)
440 {
441 return msg_nameinst(m);
442 }
443
msg_set_namelower(struct tipc_msg * m,u32 n)444 static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
445 {
446 msg_set_word(m, 9, n);
447 }
448
msg_set_nameinst(struct tipc_msg * m,u32 n)449 static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
450 {
451 msg_set_namelower(m, n);
452 }
453
msg_nameupper(struct tipc_msg * m)454 static inline u32 msg_nameupper(struct tipc_msg *m)
455 {
456 return msg_word(m, 10);
457 }
458
msg_set_nameupper(struct tipc_msg * m,u32 n)459 static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
460 {
461 msg_set_word(m, 10, n);
462 }
463
msg_data(struct tipc_msg * m)464 static inline unchar *msg_data(struct tipc_msg *m)
465 {
466 return ((unchar *)m) + msg_hdr_sz(m);
467 }
468
msg_get_wrapped(struct tipc_msg * m)469 static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
470 {
471 return (struct tipc_msg *)msg_data(m);
472 }
473
474
475 /*
476 TIPC internal message header format, version 2
477
478 1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0
479 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
480 w0:|vers |msg usr|hdr sz |n|resrv| packet size |
481 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
482 w1:|m typ| sequence gap | broadcast ack no |
483 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
484 w2:| link level ack no/bc_gap_from | seq no / bcast_gap_to |
485 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
486 w3:| previous node |
487 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
488 w4:| next sent broadcast/fragm no | next sent pkt/ fragm msg no |
489 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
490 w5:| session no |rsv=0|r|berid|link prio|netpl|p|
491 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
492 w6:| originating node |
493 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
494 w7:| destination node |
495 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
496 w8:| transport sequence number |
497 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
498 w9:| msg count / bcast tag | link tolerance |
499 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
500 \ \
501 / User Specific Data /
502 \ \
503 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
504
505 NB: CONN_MANAGER use data message format. LINK_CONFIG has own format.
506 */
507
508 /*
509 * Internal users
510 */
511
512 #define BCAST_PROTOCOL 5
513 #define MSG_BUNDLER 6
514 #define LINK_PROTOCOL 7
515 #define CONN_MANAGER 8
516 #define ROUTE_DISTRIBUTOR 9 /* obsoleted */
517 #define CHANGEOVER_PROTOCOL 10
518 #define NAME_DISTRIBUTOR 11
519 #define MSG_FRAGMENTER 12
520 #define LINK_CONFIG 13
521
522 /*
523 * Connection management protocol messages
524 */
525
526 #define CONN_PROBE 0
527 #define CONN_PROBE_REPLY 1
528 #define CONN_ACK 2
529
530 /*
531 * Name distributor messages
532 */
533
534 #define PUBLICATION 0
535 #define WITHDRAWAL 1
536
537
538 /*
539 * Word 1
540 */
541
msg_seq_gap(struct tipc_msg * m)542 static inline u32 msg_seq_gap(struct tipc_msg *m)
543 {
544 return msg_bits(m, 1, 16, 0x1fff);
545 }
546
msg_set_seq_gap(struct tipc_msg * m,u32 n)547 static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
548 {
549 msg_set_bits(m, 1, 16, 0x1fff, n);
550 }
551
552
553 /*
554 * Word 2
555 */
556
msg_dest_domain(struct tipc_msg * m)557 static inline u32 msg_dest_domain(struct tipc_msg *m)
558 {
559 return msg_word(m, 2);
560 }
561
msg_set_dest_domain(struct tipc_msg * m,u32 n)562 static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
563 {
564 msg_set_word(m, 2, n);
565 }
566
msg_bcgap_after(struct tipc_msg * m)567 static inline u32 msg_bcgap_after(struct tipc_msg *m)
568 {
569 return msg_bits(m, 2, 16, 0xffff);
570 }
571
msg_set_bcgap_after(struct tipc_msg * m,u32 n)572 static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
573 {
574 msg_set_bits(m, 2, 16, 0xffff, n);
575 }
576
msg_bcgap_to(struct tipc_msg * m)577 static inline u32 msg_bcgap_to(struct tipc_msg *m)
578 {
579 return msg_bits(m, 2, 0, 0xffff);
580 }
581
msg_set_bcgap_to(struct tipc_msg * m,u32 n)582 static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
583 {
584 msg_set_bits(m, 2, 0, 0xffff, n);
585 }
586
587
588 /*
589 * Word 4
590 */
591
msg_last_bcast(struct tipc_msg * m)592 static inline u32 msg_last_bcast(struct tipc_msg *m)
593 {
594 return msg_bits(m, 4, 16, 0xffff);
595 }
596
msg_set_last_bcast(struct tipc_msg * m,u32 n)597 static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
598 {
599 msg_set_bits(m, 4, 16, 0xffff, n);
600 }
601
602
msg_fragm_no(struct tipc_msg * m)603 static inline u32 msg_fragm_no(struct tipc_msg *m)
604 {
605 return msg_bits(m, 4, 16, 0xffff);
606 }
607
msg_set_fragm_no(struct tipc_msg * m,u32 n)608 static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
609 {
610 msg_set_bits(m, 4, 16, 0xffff, n);
611 }
612
613
msg_next_sent(struct tipc_msg * m)614 static inline u32 msg_next_sent(struct tipc_msg *m)
615 {
616 return msg_bits(m, 4, 0, 0xffff);
617 }
618
msg_set_next_sent(struct tipc_msg * m,u32 n)619 static inline void msg_set_next_sent(struct tipc_msg *m, u32 n)
620 {
621 msg_set_bits(m, 4, 0, 0xffff, n);
622 }
623
624
msg_long_msgno(struct tipc_msg * m)625 static inline u32 msg_long_msgno(struct tipc_msg *m)
626 {
627 return msg_bits(m, 4, 0, 0xffff);
628 }
629
msg_set_long_msgno(struct tipc_msg * m,u32 n)630 static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
631 {
632 msg_set_bits(m, 4, 0, 0xffff, n);
633 }
634
msg_bc_netid(struct tipc_msg * m)635 static inline u32 msg_bc_netid(struct tipc_msg *m)
636 {
637 return msg_word(m, 4);
638 }
639
msg_set_bc_netid(struct tipc_msg * m,u32 id)640 static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
641 {
642 msg_set_word(m, 4, id);
643 }
644
msg_link_selector(struct tipc_msg * m)645 static inline u32 msg_link_selector(struct tipc_msg *m)
646 {
647 return msg_bits(m, 4, 0, 1);
648 }
649
msg_set_link_selector(struct tipc_msg * m,u32 n)650 static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
651 {
652 msg_set_bits(m, 4, 0, 1, (n & 1));
653 }
654
655 /*
656 * Word 5
657 */
658
msg_session(struct tipc_msg * m)659 static inline u32 msg_session(struct tipc_msg *m)
660 {
661 return msg_bits(m, 5, 16, 0xffff);
662 }
663
msg_set_session(struct tipc_msg * m,u32 n)664 static inline void msg_set_session(struct tipc_msg *m, u32 n)
665 {
666 msg_set_bits(m, 5, 16, 0xffff, n);
667 }
668
msg_probe(struct tipc_msg * m)669 static inline u32 msg_probe(struct tipc_msg *m)
670 {
671 return msg_bits(m, 5, 0, 1);
672 }
673
msg_set_probe(struct tipc_msg * m,u32 val)674 static inline void msg_set_probe(struct tipc_msg *m, u32 val)
675 {
676 msg_set_bits(m, 5, 0, 1, (val & 1));
677 }
678
msg_net_plane(struct tipc_msg * m)679 static inline char msg_net_plane(struct tipc_msg *m)
680 {
681 return msg_bits(m, 5, 1, 7) + 'A';
682 }
683
msg_set_net_plane(struct tipc_msg * m,char n)684 static inline void msg_set_net_plane(struct tipc_msg *m, char n)
685 {
686 msg_set_bits(m, 5, 1, 7, (n - 'A'));
687 }
688
msg_linkprio(struct tipc_msg * m)689 static inline u32 msg_linkprio(struct tipc_msg *m)
690 {
691 return msg_bits(m, 5, 4, 0x1f);
692 }
693
msg_set_linkprio(struct tipc_msg * m,u32 n)694 static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
695 {
696 msg_set_bits(m, 5, 4, 0x1f, n);
697 }
698
msg_bearer_id(struct tipc_msg * m)699 static inline u32 msg_bearer_id(struct tipc_msg *m)
700 {
701 return msg_bits(m, 5, 9, 0x7);
702 }
703
msg_set_bearer_id(struct tipc_msg * m,u32 n)704 static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
705 {
706 msg_set_bits(m, 5, 9, 0x7, n);
707 }
708
msg_redundant_link(struct tipc_msg * m)709 static inline u32 msg_redundant_link(struct tipc_msg *m)
710 {
711 return msg_bits(m, 5, 12, 0x1);
712 }
713
msg_set_redundant_link(struct tipc_msg * m,u32 r)714 static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
715 {
716 msg_set_bits(m, 5, 12, 0x1, r);
717 }
718
719
720 /*
721 * Word 9
722 */
723
msg_msgcnt(struct tipc_msg * m)724 static inline u32 msg_msgcnt(struct tipc_msg *m)
725 {
726 return msg_bits(m, 9, 16, 0xffff);
727 }
728
msg_set_msgcnt(struct tipc_msg * m,u32 n)729 static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n)
730 {
731 msg_set_bits(m, 9, 16, 0xffff, n);
732 }
733
msg_bcast_tag(struct tipc_msg * m)734 static inline u32 msg_bcast_tag(struct tipc_msg *m)
735 {
736 return msg_bits(m, 9, 16, 0xffff);
737 }
738
msg_set_bcast_tag(struct tipc_msg * m,u32 n)739 static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n)
740 {
741 msg_set_bits(m, 9, 16, 0xffff, n);
742 }
743
msg_max_pkt(struct tipc_msg * m)744 static inline u32 msg_max_pkt(struct tipc_msg *m)
745 {
746 return msg_bits(m, 9, 16, 0xffff) * 4;
747 }
748
msg_set_max_pkt(struct tipc_msg * m,u32 n)749 static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
750 {
751 msg_set_bits(m, 9, 16, 0xffff, (n / 4));
752 }
753
msg_link_tolerance(struct tipc_msg * m)754 static inline u32 msg_link_tolerance(struct tipc_msg *m)
755 {
756 return msg_bits(m, 9, 0, 0xffff);
757 }
758
msg_set_link_tolerance(struct tipc_msg * m,u32 n)759 static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
760 {
761 msg_set_bits(m, 9, 0, 0xffff, n);
762 }
763
764 /*
765 * Segmentation message types
766 */
767
768 #define FIRST_FRAGMENT 0
769 #define FRAGMENT 1
770 #define LAST_FRAGMENT 2
771
772 /*
773 * Link management protocol message types
774 */
775
776 #define STATE_MSG 0
777 #define RESET_MSG 1
778 #define ACTIVATE_MSG 2
779
780 /*
781 * Changeover tunnel message types
782 */
783 #define DUPLICATE_MSG 0
784 #define ORIGINAL_MSG 1
785
786 /*
787 * Routing table message types
788 */
789 #define EXT_ROUTING_TABLE 0
790 #define LOCAL_ROUTING_TABLE 1 /* obsoleted */
791 #define SLAVE_ROUTING_TABLE 2
792 #define ROUTE_ADDITION 3
793 #define ROUTE_REMOVAL 4
794
795 /*
796 * Config protocol message types
797 */
798
799 #define DSC_REQ_MSG 0
800 #define DSC_RESP_MSG 1
801
802 u32 tipc_msg_tot_importance(struct tipc_msg *m);
803 void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
804 u32 hsize, u32 destnode);
805 int tipc_msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect);
806 int tipc_msg_build(struct tipc_msg *hdr,
807 struct iovec const *msg_sect, u32 num_sect,
808 int max_size, int usrmem, struct sk_buff **buf);
809
msg_set_media_addr(struct tipc_msg * m,struct tipc_media_addr * a)810 static inline void msg_set_media_addr(struct tipc_msg *m, struct tipc_media_addr *a)
811 {
812 memcpy(&((int *)m)[5], a, sizeof(*a));
813 }
814
msg_get_media_addr(struct tipc_msg * m,struct tipc_media_addr * a)815 static inline void msg_get_media_addr(struct tipc_msg *m, struct tipc_media_addr *a)
816 {
817 memcpy(a, &((int *)m)[5], sizeof(*a));
818 }
819
820 #endif
821