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Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/msg.h: Include file for TIPC message header routines | |
c4307285 | 3 | * |
1f9eda7e | 4 | * Copyright (c) 2000-2007, Ericsson AB |
741de3e9 | 5 | * Copyright (c) 2005-2008, 2010-2011, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
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: |
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 | */ | |
47 | ||
b97bf3fd | 48 | #define TIPC_VERSION 2 |
06d82c91 | 49 | |
d265fef6 | 50 | /* |
cc4c4353 AS |
51 | * Payload message users are defined in TIPC's public API: |
52 | * - TIPC_LOW_IMPORTANCE | |
53 | * - TIPC_MEDIUM_IMPORTANCE | |
54 | * - TIPC_HIGH_IMPORTANCE | |
55 | * - TIPC_CRITICAL_IMPORTANCE | |
56 | */ | |
57 | ||
58 | /* | |
59 | * Payload message types | |
d265fef6 AS |
60 | */ |
61 | ||
62 | #define TIPC_CONN_MSG 0 | |
63 | #define TIPC_MCAST_MSG 1 | |
64 | #define TIPC_NAMED_MSG 2 | |
65 | #define TIPC_DIRECT_MSG 3 | |
66 | ||
cc4c4353 AS |
67 | /* |
68 | * Message header sizes | |
69 | */ | |
d265fef6 | 70 | |
06d82c91 | 71 | #define SHORT_H_SIZE 24 /* Connected, in-cluster messages */ |
b97bf3fd | 72 | #define DIR_MSG_H_SIZE 32 /* Directly addressed messages */ |
06d82c91 | 73 | #define LONG_H_SIZE 40 /* Named messages */ |
b97bf3fd | 74 | #define MCAST_H_SIZE 44 /* Multicast messages */ |
06d82c91 AS |
75 | #define INT_H_SIZE 40 /* Internal messages */ |
76 | #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ | |
77 | #define MAX_H_SIZE 60 /* Largest possible TIPC header size */ | |
78 | ||
b97bf3fd | 79 | #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) |
b97bf3fd PL |
80 | |
81 | ||
d265fef6 AS |
82 | struct tipc_msg { |
83 | __be32 hdr[15]; | |
84 | }; | |
c4307285 | 85 | |
b97bf3fd | 86 | |
d265fef6 AS |
87 | static inline u32 msg_word(struct tipc_msg *m, u32 pos) |
88 | { | |
89 | return ntohl(m->hdr[pos]); | |
90 | } | |
b97bf3fd PL |
91 | |
92 | static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) | |
93 | { | |
94 | m->hdr[w] = htonl(val); | |
95 | } | |
96 | ||
d265fef6 AS |
97 | static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask) |
98 | { | |
99 | return (msg_word(m, w) >> pos) & mask; | |
100 | } | |
101 | ||
b97bf3fd PL |
102 | static inline void msg_set_bits(struct tipc_msg *m, u32 w, |
103 | u32 pos, u32 mask, u32 val) | |
104 | { | |
1f9eda7e | 105 | val = (val & mask) << pos; |
becf3da2 AV |
106 | mask = mask << pos; |
107 | m->hdr[w] &= ~htonl(mask); | |
108 | m->hdr[w] |= htonl(val); | |
b97bf3fd PL |
109 | } |
110 | ||
40aecb1b AS |
111 | static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) |
112 | { | |
113 | u32 temp = msg->hdr[a]; | |
114 | ||
115 | msg->hdr[a] = msg->hdr[b]; | |
116 | msg->hdr[b] = temp; | |
117 | } | |
118 | ||
c4307285 | 119 | /* |
b97bf3fd PL |
120 | * Word 0 |
121 | */ | |
122 | ||
123 | static inline u32 msg_version(struct tipc_msg *m) | |
124 | { | |
125 | return msg_bits(m, 0, 29, 7); | |
126 | } | |
127 | ||
c4307285 | 128 | static inline void msg_set_version(struct tipc_msg *m) |
b97bf3fd | 129 | { |
37695420 | 130 | msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
b97bf3fd PL |
131 | } |
132 | ||
133 | static inline u32 msg_user(struct tipc_msg *m) | |
134 | { | |
135 | return msg_bits(m, 0, 25, 0xf); | |
136 | } | |
137 | ||
138 | static inline u32 msg_isdata(struct tipc_msg *m) | |
139 | { | |
a02cec21 | 140 | return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
b97bf3fd PL |
141 | } |
142 | ||
c4307285 | 143 | static inline void msg_set_user(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
144 | { |
145 | msg_set_bits(m, 0, 25, 0xf, n); | |
146 | } | |
147 | ||
d265fef6 AS |
148 | static inline u32 msg_importance(struct tipc_msg *m) |
149 | { | |
150 | return msg_bits(m, 0, 25, 0xf); | |
151 | } | |
152 | ||
c4307285 | 153 | static inline void msg_set_importance(struct tipc_msg *m, u32 i) |
b97bf3fd PL |
154 | { |
155 | msg_set_user(m, i); | |
156 | } | |
157 | ||
d265fef6 AS |
158 | static inline u32 msg_hdr_sz(struct tipc_msg *m) |
159 | { | |
160 | return msg_bits(m, 0, 21, 0xf) << 2; | |
161 | } | |
162 | ||
0e65967e | 163 | static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
164 | { |
165 | msg_set_bits(m, 0, 21, 0xf, n>>2); | |
166 | } | |
167 | ||
d265fef6 AS |
168 | static inline u32 msg_size(struct tipc_msg *m) |
169 | { | |
170 | return msg_bits(m, 0, 0, 0x1ffff); | |
171 | } | |
172 | ||
173 | static inline u32 msg_data_sz(struct tipc_msg *m) | |
174 | { | |
175 | return msg_size(m) - msg_hdr_sz(m); | |
176 | } | |
177 | ||
c4307285 | 178 | static inline int msg_non_seq(struct tipc_msg *m) |
b97bf3fd PL |
179 | { |
180 | return msg_bits(m, 0, 20, 1); | |
181 | } | |
182 | ||
40aecb1b | 183 | static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) |
b97bf3fd | 184 | { |
40aecb1b | 185 | msg_set_bits(m, 0, 20, 1, n); |
b97bf3fd PL |
186 | } |
187 | ||
c4307285 | 188 | static inline int msg_dest_droppable(struct tipc_msg *m) |
b97bf3fd PL |
189 | { |
190 | return msg_bits(m, 0, 19, 1); | |
191 | } | |
192 | ||
c4307285 | 193 | static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) |
b97bf3fd PL |
194 | { |
195 | msg_set_bits(m, 0, 19, 1, d); | |
196 | } | |
197 | ||
c4307285 | 198 | static inline int msg_src_droppable(struct tipc_msg *m) |
b97bf3fd PL |
199 | { |
200 | return msg_bits(m, 0, 18, 1); | |
201 | } | |
202 | ||
c4307285 | 203 | static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) |
b97bf3fd PL |
204 | { |
205 | msg_set_bits(m, 0, 18, 1, d); | |
206 | } | |
207 | ||
208 | static inline void msg_set_size(struct tipc_msg *m, u32 sz) | |
209 | { | |
210 | m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz); | |
211 | } | |
212 | ||
213 | ||
c4307285 | 214 | /* |
b97bf3fd PL |
215 | * Word 1 |
216 | */ | |
217 | ||
d265fef6 AS |
218 | static inline u32 msg_type(struct tipc_msg *m) |
219 | { | |
220 | return msg_bits(m, 1, 29, 0x7); | |
221 | } | |
222 | ||
c4307285 | 223 | static inline void msg_set_type(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
224 | { |
225 | msg_set_bits(m, 1, 29, 0x7, n); | |
226 | } | |
227 | ||
d265fef6 AS |
228 | static inline u32 msg_named(struct tipc_msg *m) |
229 | { | |
230 | return msg_type(m) == TIPC_NAMED_MSG; | |
231 | } | |
232 | ||
233 | static inline u32 msg_mcast(struct tipc_msg *m) | |
234 | { | |
235 | return msg_type(m) == TIPC_MCAST_MSG; | |
236 | } | |
237 | ||
238 | static inline u32 msg_connected(struct tipc_msg *m) | |
239 | { | |
240 | return msg_type(m) == TIPC_CONN_MSG; | |
241 | } | |
242 | ||
243 | static inline u32 msg_errcode(struct tipc_msg *m) | |
244 | { | |
245 | return msg_bits(m, 1, 25, 0xf); | |
246 | } | |
247 | ||
c4307285 | 248 | static inline void msg_set_errcode(struct tipc_msg *m, u32 err) |
b97bf3fd PL |
249 | { |
250 | msg_set_bits(m, 1, 25, 0xf, err); | |
251 | } | |
252 | ||
c4307285 | 253 | static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
254 | { |
255 | return msg_bits(m, 1, 21, 0xf); | |
256 | } | |
257 | ||
c4307285 | 258 | static inline void msg_incr_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
259 | { |
260 | msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); | |
261 | } | |
262 | ||
c4307285 | 263 | static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
264 | { |
265 | msg_set_bits(m, 1, 21, 0xf, 0); | |
266 | } | |
267 | ||
268 | static inline u32 msg_lookup_scope(struct tipc_msg *m) | |
269 | { | |
270 | return msg_bits(m, 1, 19, 0x3); | |
271 | } | |
272 | ||
c4307285 | 273 | static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
274 | { |
275 | msg_set_bits(m, 1, 19, 0x3, n); | |
276 | } | |
277 | ||
b97bf3fd PL |
278 | static inline u32 msg_bcast_ack(struct tipc_msg *m) |
279 | { | |
280 | return msg_bits(m, 1, 0, 0xffff); | |
281 | } | |
282 | ||
c4307285 | 283 | static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
284 | { |
285 | msg_set_bits(m, 1, 0, 0xffff, n); | |
286 | } | |
287 | ||
288 | ||
c4307285 | 289 | /* |
b97bf3fd PL |
290 | * Word 2 |
291 | */ | |
292 | ||
293 | static inline u32 msg_ack(struct tipc_msg *m) | |
294 | { | |
295 | return msg_bits(m, 2, 16, 0xffff); | |
296 | } | |
297 | ||
c4307285 | 298 | static inline void msg_set_ack(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
299 | { |
300 | msg_set_bits(m, 2, 16, 0xffff, n); | |
301 | } | |
302 | ||
303 | static inline u32 msg_seqno(struct tipc_msg *m) | |
304 | { | |
305 | return msg_bits(m, 2, 0, 0xffff); | |
306 | } | |
307 | ||
c4307285 | 308 | static inline void msg_set_seqno(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
309 | { |
310 | msg_set_bits(m, 2, 0, 0xffff, n); | |
311 | } | |
312 | ||
40aecb1b AS |
313 | /* |
314 | * TIPC may utilize the "link ack #" and "link seq #" fields of a short | |
315 | * message header to hold the destination node for the message, since the | |
316 | * normal "dest node" field isn't present. This cache is only referenced | |
317 | * when required, so populating the cache of a longer message header is | |
318 | * harmless (as long as the header has the two link sequence fields present). | |
319 | * | |
320 | * Note: Host byte order is OK here, since the info never goes off-card. | |
321 | */ | |
322 | ||
323 | static inline u32 msg_destnode_cache(struct tipc_msg *m) | |
324 | { | |
325 | return m->hdr[2]; | |
326 | } | |
327 | ||
328 | static inline void msg_set_destnode_cache(struct tipc_msg *m, u32 dnode) | |
329 | { | |
330 | m->hdr[2] = dnode; | |
331 | } | |
b97bf3fd | 332 | |
c4307285 | 333 | /* |
b97bf3fd PL |
334 | * Words 3-10 |
335 | */ | |
336 | ||
337 | ||
d265fef6 AS |
338 | static inline u32 msg_prevnode(struct tipc_msg *m) |
339 | { | |
340 | return msg_word(m, 3); | |
341 | } | |
342 | ||
c4307285 | 343 | static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
344 | { |
345 | msg_set_word(m, 3, a); | |
346 | } | |
347 | ||
d265fef6 AS |
348 | static inline u32 msg_origport(struct tipc_msg *m) |
349 | { | |
350 | return msg_word(m, 4); | |
351 | } | |
352 | ||
c4307285 | 353 | static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
354 | { |
355 | msg_set_word(m, 4, p); | |
356 | } | |
357 | ||
d265fef6 AS |
358 | static inline u32 msg_destport(struct tipc_msg *m) |
359 | { | |
360 | return msg_word(m, 5); | |
361 | } | |
362 | ||
c4307285 | 363 | static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
364 | { |
365 | msg_set_word(m, 5, p); | |
366 | } | |
367 | ||
d265fef6 AS |
368 | static inline u32 msg_mc_netid(struct tipc_msg *m) |
369 | { | |
370 | return msg_word(m, 5); | |
371 | } | |
372 | ||
c4307285 | 373 | static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
374 | { |
375 | msg_set_word(m, 5, p); | |
376 | } | |
377 | ||
d265fef6 AS |
378 | static inline int msg_short(struct tipc_msg *m) |
379 | { | |
380 | return msg_hdr_sz(m) == 24; | |
381 | } | |
382 | ||
383 | static inline u32 msg_orignode(struct tipc_msg *m) | |
384 | { | |
385 | if (likely(msg_short(m))) | |
386 | return msg_prevnode(m); | |
387 | return msg_word(m, 6); | |
388 | } | |
389 | ||
c4307285 | 390 | static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
391 | { |
392 | msg_set_word(m, 6, a); | |
393 | } | |
394 | ||
d265fef6 AS |
395 | static inline u32 msg_destnode(struct tipc_msg *m) |
396 | { | |
397 | return msg_word(m, 7); | |
398 | } | |
399 | ||
c4307285 | 400 | static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
401 | { |
402 | msg_set_word(m, 7, a); | |
403 | } | |
404 | ||
c4307285 | 405 | static inline int msg_is_dest(struct tipc_msg *m, u32 d) |
b97bf3fd | 406 | { |
a02cec21 | 407 | return msg_short(m) || (msg_destnode(m) == d); |
b97bf3fd PL |
408 | } |
409 | ||
d265fef6 AS |
410 | static inline u32 msg_nametype(struct tipc_msg *m) |
411 | { | |
412 | return msg_word(m, 8); | |
413 | } | |
414 | ||
c4307285 | 415 | static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
416 | { |
417 | msg_set_word(m, 8, n); | |
418 | } | |
419 | ||
d265fef6 AS |
420 | static inline u32 msg_nameinst(struct tipc_msg *m) |
421 | { | |
422 | return msg_word(m, 9); | |
423 | } | |
424 | ||
425 | static inline u32 msg_namelower(struct tipc_msg *m) | |
426 | { | |
427 | return msg_nameinst(m); | |
428 | } | |
429 | ||
c4307285 | 430 | static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
431 | { |
432 | msg_set_word(m, 9, n); | |
433 | } | |
434 | ||
c4307285 | 435 | static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
436 | { |
437 | msg_set_namelower(m, n); | |
438 | } | |
439 | ||
d265fef6 AS |
440 | static inline u32 msg_nameupper(struct tipc_msg *m) |
441 | { | |
442 | return msg_word(m, 10); | |
443 | } | |
444 | ||
c4307285 | 445 | static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
446 | { |
447 | msg_set_word(m, 10, n); | |
448 | } | |
449 | ||
d265fef6 AS |
450 | static inline unchar *msg_data(struct tipc_msg *m) |
451 | { | |
452 | return ((unchar *)m) + msg_hdr_sz(m); | |
453 | } | |
454 | ||
b97bf3fd PL |
455 | static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m) |
456 | { | |
457 | return (struct tipc_msg *)msg_data(m); | |
458 | } | |
459 | ||
b97bf3fd PL |
460 | |
461 | /* | |
cc4c4353 AS |
462 | * Constants and routines used to read and write TIPC internal message headers |
463 | */ | |
b97bf3fd | 464 | |
c4307285 | 465 | /* |
cc4c4353 | 466 | * Internal message users |
b97bf3fd PL |
467 | */ |
468 | ||
469 | #define BCAST_PROTOCOL 5 | |
470 | #define MSG_BUNDLER 6 | |
471 | #define LINK_PROTOCOL 7 | |
472 | #define CONN_MANAGER 8 | |
51a8e4de | 473 | #define ROUTE_DISTRIBUTOR 9 /* obsoleted */ |
b97bf3fd PL |
474 | #define CHANGEOVER_PROTOCOL 10 |
475 | #define NAME_DISTRIBUTOR 11 | |
476 | #define MSG_FRAGMENTER 12 | |
477 | #define LINK_CONFIG 13 | |
b97bf3fd | 478 | |
c4307285 | 479 | /* |
cc4c4353 | 480 | * Connection management protocol message types |
b97bf3fd PL |
481 | */ |
482 | ||
483 | #define CONN_PROBE 0 | |
484 | #define CONN_PROBE_REPLY 1 | |
485 | #define CONN_ACK 2 | |
486 | ||
c4307285 | 487 | /* |
cc4c4353 | 488 | * Name distributor message types |
b97bf3fd PL |
489 | */ |
490 | ||
491 | #define PUBLICATION 0 | |
492 | #define WITHDRAWAL 1 | |
493 | ||
494 | ||
c4307285 | 495 | /* |
b97bf3fd PL |
496 | * Word 1 |
497 | */ | |
498 | ||
499 | static inline u32 msg_seq_gap(struct tipc_msg *m) | |
500 | { | |
bd784533 | 501 | return msg_bits(m, 1, 16, 0x1fff); |
b97bf3fd PL |
502 | } |
503 | ||
504 | static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) | |
505 | { | |
bd784533 | 506 | msg_set_bits(m, 1, 16, 0x1fff, n); |
b97bf3fd PL |
507 | } |
508 | ||
b97bf3fd | 509 | |
c4307285 | 510 | /* |
b97bf3fd PL |
511 | * Word 2 |
512 | */ | |
513 | ||
514 | static inline u32 msg_dest_domain(struct tipc_msg *m) | |
515 | { | |
516 | return msg_word(m, 2); | |
517 | } | |
518 | ||
c4307285 | 519 | static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
520 | { |
521 | msg_set_word(m, 2, n); | |
522 | } | |
523 | ||
524 | static inline u32 msg_bcgap_after(struct tipc_msg *m) | |
525 | { | |
526 | return msg_bits(m, 2, 16, 0xffff); | |
527 | } | |
528 | ||
529 | static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) | |
530 | { | |
531 | msg_set_bits(m, 2, 16, 0xffff, n); | |
532 | } | |
533 | ||
534 | static inline u32 msg_bcgap_to(struct tipc_msg *m) | |
535 | { | |
536 | return msg_bits(m, 2, 0, 0xffff); | |
537 | } | |
538 | ||
c4307285 | 539 | static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
540 | { |
541 | msg_set_bits(m, 2, 0, 0xffff, n); | |
542 | } | |
543 | ||
544 | ||
c4307285 | 545 | /* |
b97bf3fd PL |
546 | * Word 4 |
547 | */ | |
548 | ||
549 | static inline u32 msg_last_bcast(struct tipc_msg *m) | |
550 | { | |
551 | return msg_bits(m, 4, 16, 0xffff); | |
552 | } | |
553 | ||
554 | static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) | |
555 | { | |
556 | msg_set_bits(m, 4, 16, 0xffff, n); | |
557 | } | |
558 | ||
559 | ||
560 | static inline u32 msg_fragm_no(struct tipc_msg *m) | |
561 | { | |
562 | return msg_bits(m, 4, 16, 0xffff); | |
563 | } | |
564 | ||
565 | static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) | |
566 | { | |
567 | msg_set_bits(m, 4, 16, 0xffff, n); | |
568 | } | |
569 | ||
570 | ||
571 | static inline u32 msg_next_sent(struct tipc_msg *m) | |
572 | { | |
573 | return msg_bits(m, 4, 0, 0xffff); | |
574 | } | |
575 | ||
576 | static inline void msg_set_next_sent(struct tipc_msg *m, u32 n) | |
577 | { | |
578 | msg_set_bits(m, 4, 0, 0xffff, n); | |
579 | } | |
580 | ||
581 | ||
582 | static inline u32 msg_long_msgno(struct tipc_msg *m) | |
583 | { | |
584 | return msg_bits(m, 4, 0, 0xffff); | |
585 | } | |
586 | ||
587 | static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) | |
588 | { | |
589 | msg_set_bits(m, 4, 0, 0xffff, n); | |
590 | } | |
591 | ||
592 | static inline u32 msg_bc_netid(struct tipc_msg *m) | |
593 | { | |
594 | return msg_word(m, 4); | |
595 | } | |
596 | ||
597 | static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) | |
598 | { | |
599 | msg_set_word(m, 4, id); | |
600 | } | |
601 | ||
602 | static inline u32 msg_link_selector(struct tipc_msg *m) | |
603 | { | |
604 | return msg_bits(m, 4, 0, 1); | |
605 | } | |
606 | ||
607 | static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) | |
608 | { | |
609 | msg_set_bits(m, 4, 0, 1, (n & 1)); | |
610 | } | |
611 | ||
c4307285 | 612 | /* |
b97bf3fd PL |
613 | * Word 5 |
614 | */ | |
615 | ||
616 | static inline u32 msg_session(struct tipc_msg *m) | |
617 | { | |
618 | return msg_bits(m, 5, 16, 0xffff); | |
619 | } | |
620 | ||
621 | static inline void msg_set_session(struct tipc_msg *m, u32 n) | |
622 | { | |
623 | msg_set_bits(m, 5, 16, 0xffff, n); | |
624 | } | |
625 | ||
626 | static inline u32 msg_probe(struct tipc_msg *m) | |
627 | { | |
628 | return msg_bits(m, 5, 0, 1); | |
629 | } | |
630 | ||
631 | static inline void msg_set_probe(struct tipc_msg *m, u32 val) | |
632 | { | |
633 | msg_set_bits(m, 5, 0, 1, (val & 1)); | |
634 | } | |
635 | ||
636 | static inline char msg_net_plane(struct tipc_msg *m) | |
637 | { | |
638 | return msg_bits(m, 5, 1, 7) + 'A'; | |
639 | } | |
640 | ||
641 | static inline void msg_set_net_plane(struct tipc_msg *m, char n) | |
642 | { | |
643 | msg_set_bits(m, 5, 1, 7, (n - 'A')); | |
644 | } | |
645 | ||
646 | static inline u32 msg_linkprio(struct tipc_msg *m) | |
647 | { | |
648 | return msg_bits(m, 5, 4, 0x1f); | |
649 | } | |
650 | ||
651 | static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) | |
652 | { | |
653 | msg_set_bits(m, 5, 4, 0x1f, n); | |
654 | } | |
655 | ||
656 | static inline u32 msg_bearer_id(struct tipc_msg *m) | |
657 | { | |
658 | return msg_bits(m, 5, 9, 0x7); | |
659 | } | |
660 | ||
661 | static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) | |
662 | { | |
663 | msg_set_bits(m, 5, 9, 0x7, n); | |
664 | } | |
665 | ||
666 | static inline u32 msg_redundant_link(struct tipc_msg *m) | |
667 | { | |
668 | return msg_bits(m, 5, 12, 0x1); | |
669 | } | |
670 | ||
77f167fc | 671 | static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r) |
b97bf3fd | 672 | { |
77f167fc | 673 | msg_set_bits(m, 5, 12, 0x1, r); |
b97bf3fd PL |
674 | } |
675 | ||
676 | ||
c4307285 | 677 | /* |
b97bf3fd PL |
678 | * Word 9 |
679 | */ | |
680 | ||
681 | static inline u32 msg_msgcnt(struct tipc_msg *m) | |
682 | { | |
683 | return msg_bits(m, 9, 16, 0xffff); | |
684 | } | |
685 | ||
686 | static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n) | |
687 | { | |
688 | msg_set_bits(m, 9, 16, 0xffff, n); | |
689 | } | |
690 | ||
691 | static inline u32 msg_bcast_tag(struct tipc_msg *m) | |
692 | { | |
693 | return msg_bits(m, 9, 16, 0xffff); | |
694 | } | |
695 | ||
696 | static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) | |
697 | { | |
698 | msg_set_bits(m, 9, 16, 0xffff, n); | |
699 | } | |
700 | ||
c4307285 | 701 | static inline u32 msg_max_pkt(struct tipc_msg *m) |
b97bf3fd | 702 | { |
a02cec21 | 703 | return msg_bits(m, 9, 16, 0xffff) * 4; |
b97bf3fd PL |
704 | } |
705 | ||
c4307285 | 706 | static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
707 | { |
708 | msg_set_bits(m, 9, 16, 0xffff, (n / 4)); | |
709 | } | |
710 | ||
711 | static inline u32 msg_link_tolerance(struct tipc_msg *m) | |
712 | { | |
713 | return msg_bits(m, 9, 0, 0xffff); | |
714 | } | |
715 | ||
716 | static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) | |
717 | { | |
718 | msg_set_bits(m, 9, 0, 0xffff, n); | |
719 | } | |
720 | ||
c4307285 | 721 | /* |
b97bf3fd PL |
722 | * Segmentation message types |
723 | */ | |
724 | ||
725 | #define FIRST_FRAGMENT 0 | |
726 | #define FRAGMENT 1 | |
727 | #define LAST_FRAGMENT 2 | |
728 | ||
c4307285 | 729 | /* |
b97bf3fd PL |
730 | * Link management protocol message types |
731 | */ | |
732 | ||
733 | #define STATE_MSG 0 | |
734 | #define RESET_MSG 1 | |
735 | #define ACTIVATE_MSG 2 | |
736 | ||
c4307285 | 737 | /* |
b97bf3fd PL |
738 | * Changeover tunnel message types |
739 | */ | |
740 | #define DUPLICATE_MSG 0 | |
741 | #define ORIGINAL_MSG 1 | |
742 | ||
c4307285 | 743 | /* |
b97bf3fd PL |
744 | * Config protocol message types |
745 | */ | |
746 | ||
747 | #define DSC_REQ_MSG 0 | |
748 | #define DSC_RESP_MSG 1 | |
749 | ||
23461e83 AS |
750 | u32 tipc_msg_tot_importance(struct tipc_msg *m); |
751 | void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, | |
752 | u32 hsize, u32 destnode); | |
753 | int tipc_msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect); | |
754 | int tipc_msg_build(struct tipc_msg *hdr, | |
b97bf3fd | 755 | struct iovec const *msg_sect, u32 num_sect, |
0e65967e | 756 | int max_size, int usrmem, struct sk_buff **buf); |
b97bf3fd | 757 | |
4323add6 PL |
758 | static inline void msg_set_media_addr(struct tipc_msg *m, struct tipc_media_addr *a) |
759 | { | |
760 | memcpy(&((int *)m)[5], a, sizeof(*a)); | |
761 | } | |
b97bf3fd | 762 | |
4323add6 PL |
763 | static inline void msg_get_media_addr(struct tipc_msg *m, struct tipc_media_addr *a) |
764 | { | |
0e65967e | 765 | memcpy(a, &((int *)m)[5], sizeof(*a)); |
4323add6 | 766 | } |
b97bf3fd PL |
767 | |
768 | #endif |