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37#ifndef _TIPC_MSG_H
38#define _TIPC_MSG_H
39
40#include "bearer.h"
41
42
43
44
45
46
47#define TIPC_VERSION 2
48
49
50
51
52
53
54
55
56
57
58
59
60#define TIPC_CONN_MSG 0
61#define TIPC_MCAST_MSG 1
62#define TIPC_NAMED_MSG 2
63#define TIPC_DIRECT_MSG 3
64
65
66
67
68#define SHORT_H_SIZE 24
69#define BASIC_H_SIZE 32
70#define NAMED_H_SIZE 40
71#define MCAST_H_SIZE 44
72#define INT_H_SIZE 40
73#define MIN_H_SIZE 24
74#define MAX_H_SIZE 60
75
76#define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)
77
78#define TIPC_MEDIA_ADDR_OFFSET 5
79
80
81struct tipc_msg {
82 __be32 hdr[15];
83};
84
85
86static inline u32 msg_word(struct tipc_msg *m, u32 pos)
87{
88 return ntohl(m->hdr[pos]);
89}
90
91static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
92{
93 m->hdr[w] = htonl(val);
94}
95
96static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
97{
98 return (msg_word(m, w) >> pos) & mask;
99}
100
101static inline void msg_set_bits(struct tipc_msg *m, u32 w,
102 u32 pos, u32 mask, u32 val)
103{
104 val = (val & mask) << pos;
105 mask = mask << pos;
106 m->hdr[w] &= ~htonl(mask);
107 m->hdr[w] |= htonl(val);
108}
109
110static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
111{
112 u32 temp = msg->hdr[a];
113
114 msg->hdr[a] = msg->hdr[b];
115 msg->hdr[b] = temp;
116}
117
118
119
120
121static inline u32 msg_version(struct tipc_msg *m)
122{
123 return msg_bits(m, 0, 29, 7);
124}
125
126static inline void msg_set_version(struct tipc_msg *m)
127{
128 msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
129}
130
131static inline u32 msg_user(struct tipc_msg *m)
132{
133 return msg_bits(m, 0, 25, 0xf);
134}
135
136static inline u32 msg_isdata(struct tipc_msg *m)
137{
138 return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
139}
140
141static inline void msg_set_user(struct tipc_msg *m, u32 n)
142{
143 msg_set_bits(m, 0, 25, 0xf, n);
144}
145
146static inline u32 msg_importance(struct tipc_msg *m)
147{
148 return msg_bits(m, 0, 25, 0xf);
149}
150
151static inline void msg_set_importance(struct tipc_msg *m, u32 i)
152{
153 msg_set_user(m, i);
154}
155
156static inline u32 msg_hdr_sz(struct tipc_msg *m)
157{
158 return msg_bits(m, 0, 21, 0xf) << 2;
159}
160
161static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
162{
163 msg_set_bits(m, 0, 21, 0xf, n>>2);
164}
165
166static inline u32 msg_size(struct tipc_msg *m)
167{
168 return msg_bits(m, 0, 0, 0x1ffff);
169}
170
171static inline u32 msg_data_sz(struct tipc_msg *m)
172{
173 return msg_size(m) - msg_hdr_sz(m);
174}
175
176static inline int msg_non_seq(struct tipc_msg *m)
177{
178 return msg_bits(m, 0, 20, 1);
179}
180
181static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
182{
183 msg_set_bits(m, 0, 20, 1, n);
184}
185
186static inline int msg_dest_droppable(struct tipc_msg *m)
187{
188 return msg_bits(m, 0, 19, 1);
189}
190
191static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
192{
193 msg_set_bits(m, 0, 19, 1, d);
194}
195
196static inline int msg_src_droppable(struct tipc_msg *m)
197{
198 return msg_bits(m, 0, 18, 1);
199}
200
201static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
202{
203 msg_set_bits(m, 0, 18, 1, d);
204}
205
206static inline void msg_set_size(struct tipc_msg *m, u32 sz)
207{
208 m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
209}
210
211
212
213
214
215static inline u32 msg_type(struct tipc_msg *m)
216{
217 return msg_bits(m, 1, 29, 0x7);
218}
219
220static inline void msg_set_type(struct tipc_msg *m, u32 n)
221{
222 msg_set_bits(m, 1, 29, 0x7, n);
223}
224
225static inline u32 msg_named(struct tipc_msg *m)
226{
227 return msg_type(m) == TIPC_NAMED_MSG;
228}
229
230static inline u32 msg_mcast(struct tipc_msg *m)
231{
232 return msg_type(m) == TIPC_MCAST_MSG;
233}
234
235static inline u32 msg_connected(struct tipc_msg *m)
236{
237 return msg_type(m) == TIPC_CONN_MSG;
238}
239
240static inline u32 msg_errcode(struct tipc_msg *m)
241{
242 return msg_bits(m, 1, 25, 0xf);
243}
244
245static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
246{
247 msg_set_bits(m, 1, 25, 0xf, err);
248}
249
250static inline u32 msg_reroute_cnt(struct tipc_msg *m)
251{
252 return msg_bits(m, 1, 21, 0xf);
253}
254
255static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
256{
257 msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
258}
259
260static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
261{
262 msg_set_bits(m, 1, 21, 0xf, 0);
263}
264
265static inline u32 msg_lookup_scope(struct tipc_msg *m)
266{
267 return msg_bits(m, 1, 19, 0x3);
268}
269
270static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
271{
272 msg_set_bits(m, 1, 19, 0x3, n);
273}
274
275static inline u32 msg_bcast_ack(struct tipc_msg *m)
276{
277 return msg_bits(m, 1, 0, 0xffff);
278}
279
280static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n)
281{
282 msg_set_bits(m, 1, 0, 0xffff, n);
283}
284
285
286
287
288
289static inline u32 msg_ack(struct tipc_msg *m)
290{
291 return msg_bits(m, 2, 16, 0xffff);
292}
293
294static inline void msg_set_ack(struct tipc_msg *m, u32 n)
295{
296 msg_set_bits(m, 2, 16, 0xffff, n);
297}
298
299static inline u32 msg_seqno(struct tipc_msg *m)
300{
301 return msg_bits(m, 2, 0, 0xffff);
302}
303
304static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
305{
306 msg_set_bits(m, 2, 0, 0xffff, n);
307}
308
309
310
311
312static inline u32 msg_prevnode(struct tipc_msg *m)
313{
314 return msg_word(m, 3);
315}
316
317static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
318{
319 msg_set_word(m, 3, a);
320}
321
322static inline u32 msg_origport(struct tipc_msg *m)
323{
324 return msg_word(m, 4);
325}
326
327static inline void msg_set_origport(struct tipc_msg *m, u32 p)
328{
329 msg_set_word(m, 4, p);
330}
331
332static inline u32 msg_destport(struct tipc_msg *m)
333{
334 return msg_word(m, 5);
335}
336
337static inline void msg_set_destport(struct tipc_msg *m, u32 p)
338{
339 msg_set_word(m, 5, p);
340}
341
342static inline u32 msg_mc_netid(struct tipc_msg *m)
343{
344 return msg_word(m, 5);
345}
346
347static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
348{
349 msg_set_word(m, 5, p);
350}
351
352static inline int msg_short(struct tipc_msg *m)
353{
354 return msg_hdr_sz(m) == SHORT_H_SIZE;
355}
356
357static inline u32 msg_orignode(struct tipc_msg *m)
358{
359 if (likely(msg_short(m)))
360 return msg_prevnode(m);
361 return msg_word(m, 6);
362}
363
364static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
365{
366 msg_set_word(m, 6, a);
367}
368
369static inline u32 msg_destnode(struct tipc_msg *m)
370{
371 return msg_word(m, 7);
372}
373
374static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
375{
376 msg_set_word(m, 7, a);
377}
378
379static inline u32 msg_nametype(struct tipc_msg *m)
380{
381 return msg_word(m, 8);
382}
383
384static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
385{
386 msg_set_word(m, 8, n);
387}
388
389static inline u32 msg_nameinst(struct tipc_msg *m)
390{
391 return msg_word(m, 9);
392}
393
394static inline u32 msg_namelower(struct tipc_msg *m)
395{
396 return msg_nameinst(m);
397}
398
399static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
400{
401 msg_set_word(m, 9, n);
402}
403
404static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
405{
406 msg_set_namelower(m, n);
407}
408
409static inline u32 msg_nameupper(struct tipc_msg *m)
410{
411 return msg_word(m, 10);
412}
413
414static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
415{
416 msg_set_word(m, 10, n);
417}
418
419static inline unchar *msg_data(struct tipc_msg *m)
420{
421 return ((unchar *)m) + msg_hdr_sz(m);
422}
423
424static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
425{
426 return (struct tipc_msg *)msg_data(m);
427}
428
429
430
431
432
433
434
435
436#define BCAST_PROTOCOL 5
437#define MSG_BUNDLER 6
438#define LINK_PROTOCOL 7
439#define CONN_MANAGER 8
440#define ROUTE_DISTRIBUTOR 9
441#define CHANGEOVER_PROTOCOL 10
442#define NAME_DISTRIBUTOR 11
443#define MSG_FRAGMENTER 12
444#define LINK_CONFIG 13
445
446
447
448
449#define CONN_PROBE 0
450#define CONN_PROBE_REPLY 1
451#define CONN_ACK 2
452
453
454
455
456#define PUBLICATION 0
457#define WITHDRAWAL 1
458
459
460
461
462#define FIRST_FRAGMENT 0
463#define FRAGMENT 1
464#define LAST_FRAGMENT 2
465
466
467
468
469#define STATE_MSG 0
470#define RESET_MSG 1
471#define ACTIVATE_MSG 2
472
473
474
475
476#define DUPLICATE_MSG 0
477#define ORIGINAL_MSG 1
478
479
480
481
482#define DSC_REQ_MSG 0
483#define DSC_RESP_MSG 1
484
485
486
487
488
489static inline u32 msg_seq_gap(struct tipc_msg *m)
490{
491 return msg_bits(m, 1, 16, 0x1fff);
492}
493
494static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
495{
496 msg_set_bits(m, 1, 16, 0x1fff, n);
497}
498
499static inline u32 msg_node_sig(struct tipc_msg *m)
500{
501 return msg_bits(m, 1, 0, 0xffff);
502}
503
504static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
505{
506 msg_set_bits(m, 1, 0, 0xffff, n);
507}
508
509
510
511
512
513static inline u32 msg_dest_domain(struct tipc_msg *m)
514{
515 return msg_word(m, 2);
516}
517
518static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
519{
520 msg_set_word(m, 2, n);
521}
522
523static inline u32 msg_bcgap_after(struct tipc_msg *m)
524{
525 return msg_bits(m, 2, 16, 0xffff);
526}
527
528static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
529{
530 msg_set_bits(m, 2, 16, 0xffff, n);
531}
532
533static inline u32 msg_bcgap_to(struct tipc_msg *m)
534{
535 return msg_bits(m, 2, 0, 0xffff);
536}
537
538static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
539{
540 msg_set_bits(m, 2, 0, 0xffff, n);
541}
542
543
544
545
546
547static inline u32 msg_last_bcast(struct tipc_msg *m)
548{
549 return msg_bits(m, 4, 16, 0xffff);
550}
551
552static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
553{
554 msg_set_bits(m, 4, 16, 0xffff, n);
555}
556
557static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
558{
559 msg_set_bits(m, 4, 16, 0xffff, n);
560}
561
562
563static inline u32 msg_next_sent(struct tipc_msg *m)
564{
565 return msg_bits(m, 4, 0, 0xffff);
566}
567
568static inline void msg_set_next_sent(struct tipc_msg *m, u32 n)
569{
570 msg_set_bits(m, 4, 0, 0xffff, n);
571}
572
573static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
574{
575 msg_set_bits(m, 4, 0, 0xffff, n);
576}
577
578static inline u32 msg_bc_netid(struct tipc_msg *m)
579{
580 return msg_word(m, 4);
581}
582
583static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
584{
585 msg_set_word(m, 4, id);
586}
587
588static inline u32 msg_link_selector(struct tipc_msg *m)
589{
590 return msg_bits(m, 4, 0, 1);
591}
592
593static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
594{
595 msg_set_bits(m, 4, 0, 1, n);
596}
597
598
599
600
601static inline u32 msg_session(struct tipc_msg *m)
602{
603 return msg_bits(m, 5, 16, 0xffff);
604}
605
606static inline void msg_set_session(struct tipc_msg *m, u32 n)
607{
608 msg_set_bits(m, 5, 16, 0xffff, n);
609}
610
611static inline u32 msg_probe(struct tipc_msg *m)
612{
613 return msg_bits(m, 5, 0, 1);
614}
615
616static inline void msg_set_probe(struct tipc_msg *m, u32 val)
617{
618 msg_set_bits(m, 5, 0, 1, val);
619}
620
621static inline char msg_net_plane(struct tipc_msg *m)
622{
623 return msg_bits(m, 5, 1, 7) + 'A';
624}
625
626static inline void msg_set_net_plane(struct tipc_msg *m, char n)
627{
628 msg_set_bits(m, 5, 1, 7, (n - 'A'));
629}
630
631static inline u32 msg_linkprio(struct tipc_msg *m)
632{
633 return msg_bits(m, 5, 4, 0x1f);
634}
635
636static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
637{
638 msg_set_bits(m, 5, 4, 0x1f, n);
639}
640
641static inline u32 msg_bearer_id(struct tipc_msg *m)
642{
643 return msg_bits(m, 5, 9, 0x7);
644}
645
646static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
647{
648 msg_set_bits(m, 5, 9, 0x7, n);
649}
650
651static inline u32 msg_redundant_link(struct tipc_msg *m)
652{
653 return msg_bits(m, 5, 12, 0x1);
654}
655
656static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
657{
658 msg_set_bits(m, 5, 12, 0x1, r);
659}
660
661static inline char *msg_media_addr(struct tipc_msg *m)
662{
663 return (char *)&m->hdr[TIPC_MEDIA_ADDR_OFFSET];
664}
665
666
667
668
669static inline u32 msg_msgcnt(struct tipc_msg *m)
670{
671 return msg_bits(m, 9, 16, 0xffff);
672}
673
674static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n)
675{
676 msg_set_bits(m, 9, 16, 0xffff, n);
677}
678
679static inline u32 msg_bcast_tag(struct tipc_msg *m)
680{
681 return msg_bits(m, 9, 16, 0xffff);
682}
683
684static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n)
685{
686 msg_set_bits(m, 9, 16, 0xffff, n);
687}
688
689static inline u32 msg_max_pkt(struct tipc_msg *m)
690{
691 return msg_bits(m, 9, 16, 0xffff) * 4;
692}
693
694static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
695{
696 msg_set_bits(m, 9, 16, 0xffff, (n / 4));
697}
698
699static inline u32 msg_link_tolerance(struct tipc_msg *m)
700{
701 return msg_bits(m, 9, 0, 0xffff);
702}
703
704static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
705{
706 msg_set_bits(m, 9, 0, 0xffff, n);
707}
708
709u32 tipc_msg_tot_importance(struct tipc_msg *m);
710void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
711 u32 destnode);
712int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
713 unsigned int len, int max_size, struct sk_buff **buf);
714#endif
715