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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, 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 | |
101 | static inline u32 msg_word(struct tipc_msg *m, u32 pos) |
102 | { |
103 | return ntohl(m->hdr[pos]); |
104 | } |
105 | |
106 | static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) |
107 | { |
108 | m->hdr[w] = htonl(val); |
109 | } |
110 | |
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 | |
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 | |
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 | |
137 | static inline u32 msg_version(struct tipc_msg *m) |
138 | { |
139 | return msg_bits(m, 0, 29, 7); |
140 | } |
141 | |
142 | static inline void msg_set_version(struct tipc_msg *m) |
143 | { |
144 | msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
145 | } |
146 | |
147 | static inline u32 msg_user(struct tipc_msg *m) |
148 | { |
149 | return msg_bits(m, 0, 25, 0xf); |
150 | } |
151 | |
152 | static inline u32 msg_isdata(struct tipc_msg *m) |
153 | { |
154 | return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
155 | } |
156 | |
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 | |
162 | static inline u32 msg_importance(struct tipc_msg *m) |
163 | { |
164 | return msg_bits(m, 0, 25, 0xf); |
165 | } |
166 | |
167 | static inline void msg_set_importance(struct tipc_msg *m, u32 i) |
168 | { |
169 | msg_set_user(m, i); |
170 | } |
171 | |
172 | static inline u32 msg_hdr_sz(struct tipc_msg *m) |
173 | { |
174 | return msg_bits(m, 0, 21, 0xf) << 2; |
175 | } |
176 | |
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 | |
182 | static inline u32 msg_size(struct tipc_msg *m) |
183 | { |
184 | return msg_bits(m, 0, 0, 0x1ffff); |
185 | } |
186 | |
187 | static inline u32 msg_data_sz(struct tipc_msg *m) |
188 | { |
189 | return msg_size(m) - msg_hdr_sz(m); |
190 | } |
191 | |
192 | static inline int msg_non_seq(struct tipc_msg *m) |
193 | { |
194 | return msg_bits(m, 0, 20, 1); |
195 | } |
196 | |
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 | |
202 | static inline int msg_dest_droppable(struct tipc_msg *m) |
203 | { |
204 | return msg_bits(m, 0, 19, 1); |
205 | } |
206 | |
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 | |
212 | static inline int msg_src_droppable(struct tipc_msg *m) |
213 | { |
214 | return msg_bits(m, 0, 18, 1); |
215 | } |
216 | |
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 | |
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 | |
232 | static inline u32 msg_type(struct tipc_msg *m) |
233 | { |
234 | return msg_bits(m, 1, 29, 0x7); |
235 | } |
236 | |
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 | |
242 | static inline u32 msg_named(struct tipc_msg *m) |
243 | { |
244 | return msg_type(m) == TIPC_NAMED_MSG; |
245 | } |
246 | |
247 | static inline u32 msg_mcast(struct tipc_msg *m) |
248 | { |
249 | return msg_type(m) == TIPC_MCAST_MSG; |
250 | } |
251 | |
252 | static inline u32 msg_connected(struct tipc_msg *m) |
253 | { |
254 | return msg_type(m) == TIPC_CONN_MSG; |
255 | } |
256 | |
257 | static inline u32 msg_errcode(struct tipc_msg *m) |
258 | { |
259 | return msg_bits(m, 1, 25, 0xf); |
260 | } |
261 | |
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 | |
267 | static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
268 | { |
269 | return msg_bits(m, 1, 21, 0xf); |
270 | } |
271 | |
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 | |
277 | static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
278 | { |
279 | msg_set_bits(m, 1, 21, 0xf, 0); |
280 | } |
281 | |
282 | static inline u32 msg_lookup_scope(struct tipc_msg *m) |
283 | { |
284 | return msg_bits(m, 1, 19, 0x3); |
285 | } |
286 | |
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 | |
292 | static inline u32 msg_bcast_ack(struct tipc_msg *m) |
293 | { |
294 | return msg_bits(m, 1, 0, 0xffff); |
295 | } |
296 | |
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 | |
307 | static inline u32 msg_ack(struct tipc_msg *m) |
308 | { |
309 | return msg_bits(m, 2, 16, 0xffff); |
310 | } |
311 | |
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 | |
317 | static inline u32 msg_seqno(struct tipc_msg *m) |
318 | { |
319 | return msg_bits(m, 2, 0, 0xffff); |
320 | } |
321 | |
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 | |
337 | static inline u32 msg_destnode_cache(struct tipc_msg *m) |
338 | { |
339 | return m->hdr[2]; |
340 | } |
341 | |
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 | |
352 | static inline u32 msg_prevnode(struct tipc_msg *m) |
353 | { |
354 | return msg_word(m, 3); |
355 | } |
356 | |
357 | static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
358 | { |
359 | msg_set_word(m, 3, a); |
360 | } |
361 | |
362 | static inline u32 msg_origport(struct tipc_msg *m) |
363 | { |
364 | return msg_word(m, 4); |
365 | } |
366 | |
367 | static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
368 | { |
369 | msg_set_word(m, 4, p); |
370 | } |
371 | |
372 | static inline u32 msg_destport(struct tipc_msg *m) |
373 | { |
374 | return msg_word(m, 5); |
375 | } |
376 | |
377 | static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
378 | { |
379 | msg_set_word(m, 5, p); |
380 | } |
381 | |
382 | static inline u32 msg_mc_netid(struct tipc_msg *m) |
383 | { |
384 | return msg_word(m, 5); |
385 | } |
386 | |
387 | static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) |
388 | { |
389 | msg_set_word(m, 5, p); |
390 | } |
391 | |
392 | static inline int msg_short(struct tipc_msg *m) |
393 | { |
394 | return msg_hdr_sz(m) == 24; |
395 | } |
396 | |
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 | |
404 | static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
405 | { |
406 | msg_set_word(m, 6, a); |
407 | } |
408 | |
409 | static inline u32 msg_destnode(struct tipc_msg *m) |
410 | { |
411 | return msg_word(m, 7); |
412 | } |
413 | |
414 | static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
415 | { |
416 | msg_set_word(m, 7, a); |
417 | } |
418 | |
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 | |
424 | static inline u32 msg_routed(struct tipc_msg *m) |
425 | { |
426 | if (likely(msg_short(m))) |
427 | return 0; |
428 | return (msg_destnode(m) ^ msg_orignode(m)) >> 11; |
429 | } |
430 | |
431 | static inline u32 msg_nametype(struct tipc_msg *m) |
432 | { |
433 | return msg_word(m, 8); |
434 | } |
435 | |
436 | static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
437 | { |
438 | msg_set_word(m, 8, n); |
439 | } |
440 | |
441 | static inline u32 msg_transp_seqno(struct tipc_msg *m) |
442 | { |
443 | return msg_word(m, 8); |
444 | } |
445 | |
446 | static inline void msg_set_timestamp(struct tipc_msg *m, u32 n) |
447 | { |
448 | msg_set_word(m, 8, n); |
449 | } |
450 | |
451 | static inline u32 msg_timestamp(struct tipc_msg *m) |
452 | { |
453 | return msg_word(m, 8); |
454 | } |
455 | |
456 | static inline void msg_set_transp_seqno(struct tipc_msg *m, u32 n) |
457 | { |
458 | msg_set_word(m, 8, n); |
459 | } |
460 | |
461 | static inline u32 msg_nameinst(struct tipc_msg *m) |
462 | { |
463 | return msg_word(m, 9); |
464 | } |
465 | |
466 | static inline u32 msg_namelower(struct tipc_msg *m) |
467 | { |
468 | return msg_nameinst(m); |
469 | } |
470 | |
471 | static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
472 | { |
473 | msg_set_word(m, 9, n); |
474 | } |
475 | |
476 | static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
477 | { |
478 | msg_set_namelower(m, n); |
479 | } |
480 | |
481 | static inline u32 msg_nameupper(struct tipc_msg *m) |
482 | { |
483 | return msg_word(m, 10); |
484 | } |
485 | |
486 | static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
487 | { |
488 | msg_set_word(m, 10, n); |
489 | } |
490 | |
491 | static inline unchar *msg_data(struct tipc_msg *m) |
492 | { |
493 | return ((unchar *)m) + msg_hdr_sz(m); |
494 | } |
495 | |
496 | static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m) |
497 | { |
498 | return (struct tipc_msg *)msg_data(m); |
499 | } |
500 | |
501 | |
502 | /* |
503 | TIPC internal message header format, version 2 |
504 | |
505 | 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 |
506 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
507 | w0:|vers |msg usr|hdr sz |n|resrv| packet size | |
508 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
509 | w1:|m typ| sequence gap | broadcast ack no | |
510 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
511 | w2:| link level ack no/bc_gap_from | seq no / bcast_gap_to | |
512 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
513 | w3:| previous node | |
514 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
515 | w4:| next sent broadcast/fragm no | next sent pkt/ fragm msg no | |
516 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
517 | w5:| session no |rsv=0|r|berid|link prio|netpl|p| |
518 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
519 | w6:| originating node | |
520 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
521 | w7:| destination node | |
522 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
523 | w8:| transport sequence number | |
524 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
525 | w9:| msg count / bcast tag | link tolerance | |
526 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
527 | \ \ |
528 | / User Specific Data / |
529 | \ \ |
530 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
531 | |
532 | NB: CONN_MANAGER use data message format. LINK_CONFIG has own format. |
533 | */ |
534 | |
535 | /* |
536 | * Internal users |
537 | */ |
538 | |
539 | #define BCAST_PROTOCOL 5 |
540 | #define MSG_BUNDLER 6 |
541 | #define LINK_PROTOCOL 7 |
542 | #define CONN_MANAGER 8 |
543 | #define ROUTE_DISTRIBUTOR 9 /* obsoleted */ |
544 | #define CHANGEOVER_PROTOCOL 10 |
545 | #define NAME_DISTRIBUTOR 11 |
546 | #define MSG_FRAGMENTER 12 |
547 | #define LINK_CONFIG 13 |
548 | #define DSC_H_SIZE 40 |
549 | |
550 | /* |
551 | * Connection management protocol messages |
552 | */ |
553 | |
554 | #define CONN_PROBE 0 |
555 | #define CONN_PROBE_REPLY 1 |
556 | #define CONN_ACK 2 |
557 | |
558 | /* |
559 | * Name distributor messages |
560 | */ |
561 | |
562 | #define PUBLICATION 0 |
563 | #define WITHDRAWAL 1 |
564 | |
565 | |
566 | /* |
567 | * Word 1 |
568 | */ |
569 | |
570 | static inline u32 msg_seq_gap(struct tipc_msg *m) |
571 | { |
572 | return msg_bits(m, 1, 16, 0x1fff); |
573 | } |
574 | |
575 | static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) |
576 | { |
577 | msg_set_bits(m, 1, 16, 0x1fff, n); |
578 | } |
579 | |
580 | static inline u32 msg_req_links(struct tipc_msg *m) |
581 | { |
582 | return msg_bits(m, 1, 16, 0xfff); |
583 | } |
584 | |
585 | static inline void msg_set_req_links(struct tipc_msg *m, u32 n) |
586 | { |
587 | msg_set_bits(m, 1, 16, 0xfff, n); |
588 | } |
589 | |
590 | |
591 | /* |
592 | * Word 2 |
593 | */ |
594 | |
595 | static inline u32 msg_dest_domain(struct tipc_msg *m) |
596 | { |
597 | return msg_word(m, 2); |
598 | } |
599 | |
600 | static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) |
601 | { |
602 | msg_set_word(m, 2, n); |
603 | } |
604 | |
605 | static inline u32 msg_bcgap_after(struct tipc_msg *m) |
606 | { |
607 | return msg_bits(m, 2, 16, 0xffff); |
608 | } |
609 | |
610 | static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) |
611 | { |
612 | msg_set_bits(m, 2, 16, 0xffff, n); |
613 | } |
614 | |
615 | static inline u32 msg_bcgap_to(struct tipc_msg *m) |
616 | { |
617 | return msg_bits(m, 2, 0, 0xffff); |
618 | } |
619 | |
620 | static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) |
621 | { |
622 | msg_set_bits(m, 2, 0, 0xffff, n); |
623 | } |
624 | |
625 | |
626 | /* |
627 | * Word 4 |
628 | */ |
629 | |
630 | static inline u32 msg_last_bcast(struct tipc_msg *m) |
631 | { |
632 | return msg_bits(m, 4, 16, 0xffff); |
633 | } |
634 | |
635 | static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) |
636 | { |
637 | msg_set_bits(m, 4, 16, 0xffff, n); |
638 | } |
639 | |
640 | |
641 | static inline u32 msg_fragm_no(struct tipc_msg *m) |
642 | { |
643 | return msg_bits(m, 4, 16, 0xffff); |
644 | } |
645 | |
646 | static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) |
647 | { |
648 | msg_set_bits(m, 4, 16, 0xffff, n); |
649 | } |
650 | |
651 | |
652 | static inline u32 msg_next_sent(struct tipc_msg *m) |
653 | { |
654 | return msg_bits(m, 4, 0, 0xffff); |
655 | } |
656 | |
657 | static inline void msg_set_next_sent(struct tipc_msg *m, u32 n) |
658 | { |
659 | msg_set_bits(m, 4, 0, 0xffff, n); |
660 | } |
661 | |
662 | |
663 | static inline u32 msg_long_msgno(struct tipc_msg *m) |
664 | { |
665 | return msg_bits(m, 4, 0, 0xffff); |
666 | } |
667 | |
668 | static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) |
669 | { |
670 | msg_set_bits(m, 4, 0, 0xffff, n); |
671 | } |
672 | |
673 | static inline u32 msg_bc_netid(struct tipc_msg *m) |
674 | { |
675 | return msg_word(m, 4); |
676 | } |
677 | |
678 | static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) |
679 | { |
680 | msg_set_word(m, 4, id); |
681 | } |
682 | |
683 | static inline u32 msg_link_selector(struct tipc_msg *m) |
684 | { |
685 | return msg_bits(m, 4, 0, 1); |
686 | } |
687 | |
688 | static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) |
689 | { |
690 | msg_set_bits(m, 4, 0, 1, (n & 1)); |
691 | } |
692 | |
693 | /* |
694 | * Word 5 |
695 | */ |
696 | |
697 | static inline u32 msg_session(struct tipc_msg *m) |
698 | { |
699 | return msg_bits(m, 5, 16, 0xffff); |
700 | } |
701 | |
702 | static inline void msg_set_session(struct tipc_msg *m, u32 n) |
703 | { |
704 | msg_set_bits(m, 5, 16, 0xffff, n); |
705 | } |
706 | |
707 | static inline u32 msg_probe(struct tipc_msg *m) |
708 | { |
709 | return msg_bits(m, 5, 0, 1); |
710 | } |
711 | |
712 | static inline void msg_set_probe(struct tipc_msg *m, u32 val) |
713 | { |
714 | msg_set_bits(m, 5, 0, 1, (val & 1)); |
715 | } |
716 | |
717 | static inline char msg_net_plane(struct tipc_msg *m) |
718 | { |
719 | return msg_bits(m, 5, 1, 7) + 'A'; |
720 | } |
721 | |
722 | static inline void msg_set_net_plane(struct tipc_msg *m, char n) |
723 | { |
724 | msg_set_bits(m, 5, 1, 7, (n - 'A')); |
725 | } |
726 | |
727 | static inline u32 msg_linkprio(struct tipc_msg *m) |
728 | { |
729 | return msg_bits(m, 5, 4, 0x1f); |
730 | } |
731 | |
732 | static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) |
733 | { |
734 | msg_set_bits(m, 5, 4, 0x1f, n); |
735 | } |
736 | |
737 | static inline u32 msg_bearer_id(struct tipc_msg *m) |
738 | { |
739 | return msg_bits(m, 5, 9, 0x7); |
740 | } |
741 | |
742 | static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) |
743 | { |
744 | msg_set_bits(m, 5, 9, 0x7, n); |
745 | } |
746 | |
747 | static inline u32 msg_redundant_link(struct tipc_msg *m) |
748 | { |
749 | return msg_bits(m, 5, 12, 0x1); |
750 | } |
751 | |
752 | static inline void msg_set_redundant_link(struct tipc_msg *m) |
753 | { |
754 | msg_set_bits(m, 5, 12, 0x1, 1); |
755 | } |
756 | |
757 | static inline void msg_clear_redundant_link(struct tipc_msg *m) |
758 | { |
759 | msg_set_bits(m, 5, 12, 0x1, 0); |
760 | } |
761 | |
762 | |
763 | /* |
764 | * Word 9 |
765 | */ |
766 | |
767 | static inline u32 msg_msgcnt(struct tipc_msg *m) |
768 | { |
769 | return msg_bits(m, 9, 16, 0xffff); |
770 | } |
771 | |
772 | static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n) |
773 | { |
774 | msg_set_bits(m, 9, 16, 0xffff, n); |
775 | } |
776 | |
777 | static inline u32 msg_bcast_tag(struct tipc_msg *m) |
778 | { |
779 | return msg_bits(m, 9, 16, 0xffff); |
780 | } |
781 | |
782 | static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) |
783 | { |
784 | msg_set_bits(m, 9, 16, 0xffff, n); |
785 | } |
786 | |
787 | static inline u32 msg_max_pkt(struct tipc_msg *m) |
788 | { |
789 | return msg_bits(m, 9, 16, 0xffff) * 4; |
790 | } |
791 | |
792 | static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) |
793 | { |
794 | msg_set_bits(m, 9, 16, 0xffff, (n / 4)); |
795 | } |
796 | |
797 | static inline u32 msg_link_tolerance(struct tipc_msg *m) |
798 | { |
799 | return msg_bits(m, 9, 0, 0xffff); |
800 | } |
801 | |
802 | static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) |
803 | { |
804 | msg_set_bits(m, 9, 0, 0xffff, n); |
805 | } |
806 | |
807 | /* |
808 | * Routing table message data |
809 | */ |
810 | |
811 | |
812 | static inline u32 msg_remote_node(struct tipc_msg *m) |
813 | { |
814 | return msg_word(m, msg_hdr_sz(m)/4); |
815 | } |
816 | |
817 | static inline void msg_set_remote_node(struct tipc_msg *m, u32 a) |
818 | { |
819 | msg_set_word(m, msg_hdr_sz(m)/4, a); |
820 | } |
821 | |
822 | /* |
823 | * Segmentation message types |
824 | */ |
825 | |
826 | #define FIRST_FRAGMENT 0 |
827 | #define FRAGMENT 1 |
828 | #define LAST_FRAGMENT 2 |
829 | |
830 | /* |
831 | * Link management protocol message types |
832 | */ |
833 | |
834 | #define STATE_MSG 0 |
835 | #define RESET_MSG 1 |
836 | #define ACTIVATE_MSG 2 |
837 | |
838 | /* |
839 | * Changeover tunnel message types |
840 | */ |
841 | #define DUPLICATE_MSG 0 |
842 | #define ORIGINAL_MSG 1 |
843 | |
844 | /* |
845 | * Routing table message types |
846 | */ |
847 | #define EXT_ROUTING_TABLE 0 |
848 | #define LOCAL_ROUTING_TABLE 1 /* obsoleted */ |
849 | #define SLAVE_ROUTING_TABLE 2 |
850 | #define ROUTE_ADDITION 3 |
851 | #define ROUTE_REMOVAL 4 |
852 | |
853 | /* |
854 | * Config protocol message types |
855 | */ |
856 | |
857 | #define DSC_REQ_MSG 0 |
858 | #define DSC_RESP_MSG 1 |
859 | |
860 | u32 tipc_msg_tot_importance(struct tipc_msg *m); |
861 | void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, |
862 | u32 hsize, u32 destnode); |
863 | int tipc_msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect); |
864 | int tipc_msg_build(struct tipc_msg *hdr, |
865 | struct iovec const *msg_sect, u32 num_sect, |
866 | int max_size, int usrmem, struct sk_buff **buf); |
867 | |
868 | static inline void msg_set_media_addr(struct tipc_msg *m, struct tipc_media_addr *a) |
869 | { |
870 | memcpy(&((int *)m)[5], a, sizeof(*a)); |
871 | } |
872 | |
873 | static inline void msg_get_media_addr(struct tipc_msg *m, struct tipc_media_addr *a) |
874 | { |
875 | memcpy(a, &((int *)m)[5], sizeof(*a)); |
876 | } |
877 | |
878 | #endif |
879 |
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