1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37#ifndef _TIPC_MSG_H
38#define _TIPC_MSG_H
39
40#include <linux/tipc.h>
41#include "core.h"
42
43
44
45
46
47
48#define TIPC_VERSION 2
49struct plist;
50
51
52
53
54
55
56
57
58#define TIPC_SYSTEM_IMPORTANCE 4
59
60
61
62
63
64#define TIPC_CONN_MSG 0
65#define TIPC_MCAST_MSG 1
66#define TIPC_NAMED_MSG 2
67#define TIPC_DIRECT_MSG 3
68#define TIPC_GRP_MEMBER_EVT 4
69#define TIPC_GRP_BCAST_MSG 5
70#define TIPC_GRP_MCAST_MSG 6
71#define TIPC_GRP_UCAST_MSG 7
72
73
74
75
76#define BCAST_PROTOCOL 5
77#define MSG_BUNDLER 6
78#define LINK_PROTOCOL 7
79#define CONN_MANAGER 8
80#define GROUP_PROTOCOL 9
81#define TUNNEL_PROTOCOL 10
82#define NAME_DISTRIBUTOR 11
83#define MSG_FRAGMENTER 12
84#define LINK_CONFIG 13
85#define SOCK_WAKEUP 14
86#define TOP_SRV 15
87
88
89
90
91#define SHORT_H_SIZE 24
92#define BASIC_H_SIZE 32
93#define NAMED_H_SIZE 40
94#define MCAST_H_SIZE 44
95#define GROUP_H_SIZE 44
96#define INT_H_SIZE 40
97#define MIN_H_SIZE 24
98#define MAX_H_SIZE 60
99
100#define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)
101#define FB_MTU 3744
102#define TIPC_MEDIA_INFO_OFFSET 5
103
104struct tipc_skb_cb {
105 u32 bytes_read;
106 u32 orig_member;
107 struct sk_buff *tail;
108 unsigned long nxt_retr;
109 bool validated;
110 u16 chain_imp;
111 u16 ackers;
112};
113
114#define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0]))
115
116struct tipc_msg {
117 __be32 hdr[15];
118};
119
120static inline struct tipc_msg *buf_msg(struct sk_buff *skb)
121{
122 return (struct tipc_msg *)skb->data;
123}
124
125static inline u32 msg_word(struct tipc_msg *m, u32 pos)
126{
127 return ntohl(m->hdr[pos]);
128}
129
130static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
131{
132 m->hdr[w] = htonl(val);
133}
134
135static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
136{
137 return (msg_word(m, w) >> pos) & mask;
138}
139
140static inline void msg_set_bits(struct tipc_msg *m, u32 w,
141 u32 pos, u32 mask, u32 val)
142{
143 val = (val & mask) << pos;
144 mask = mask << pos;
145 m->hdr[w] &= ~htonl(mask);
146 m->hdr[w] |= htonl(val);
147}
148
149static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
150{
151 u32 temp = msg->hdr[a];
152
153 msg->hdr[a] = msg->hdr[b];
154 msg->hdr[b] = temp;
155}
156
157
158
159
160static inline u32 msg_version(struct tipc_msg *m)
161{
162 return msg_bits(m, 0, 29, 7);
163}
164
165static inline void msg_set_version(struct tipc_msg *m)
166{
167 msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
168}
169
170static inline u32 msg_user(struct tipc_msg *m)
171{
172 return msg_bits(m, 0, 25, 0xf);
173}
174
175static inline u32 msg_isdata(struct tipc_msg *m)
176{
177 return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
178}
179
180static inline void msg_set_user(struct tipc_msg *m, u32 n)
181{
182 msg_set_bits(m, 0, 25, 0xf, n);
183}
184
185static inline u32 msg_hdr_sz(struct tipc_msg *m)
186{
187 return msg_bits(m, 0, 21, 0xf) << 2;
188}
189
190static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
191{
192 msg_set_bits(m, 0, 21, 0xf, n>>2);
193}
194
195static inline u32 msg_size(struct tipc_msg *m)
196{
197 return msg_bits(m, 0, 0, 0x1ffff);
198}
199
200static inline u32 msg_blocks(struct tipc_msg *m)
201{
202 return (msg_size(m) / 1024) + 1;
203}
204
205static inline u32 msg_data_sz(struct tipc_msg *m)
206{
207 return msg_size(m) - msg_hdr_sz(m);
208}
209
210static inline int msg_non_seq(struct tipc_msg *m)
211{
212 return msg_bits(m, 0, 20, 1);
213}
214
215static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
216{
217 msg_set_bits(m, 0, 20, 1, n);
218}
219
220static inline int msg_is_syn(struct tipc_msg *m)
221{
222 return msg_bits(m, 0, 17, 1);
223}
224
225static inline void msg_set_syn(struct tipc_msg *m, u32 d)
226{
227 msg_set_bits(m, 0, 17, 1, d);
228}
229
230static inline int msg_dest_droppable(struct tipc_msg *m)
231{
232 return msg_bits(m, 0, 19, 1);
233}
234
235static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
236{
237 msg_set_bits(m, 0, 19, 1, d);
238}
239
240static inline int msg_is_keepalive(struct tipc_msg *m)
241{
242 return msg_bits(m, 0, 19, 1);
243}
244
245static inline void msg_set_is_keepalive(struct tipc_msg *m, u32 d)
246{
247 msg_set_bits(m, 0, 19, 1, d);
248}
249
250static inline int msg_src_droppable(struct tipc_msg *m)
251{
252 return msg_bits(m, 0, 18, 1);
253}
254
255static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
256{
257 msg_set_bits(m, 0, 18, 1, d);
258}
259
260static inline void msg_set_size(struct tipc_msg *m, u32 sz)
261{
262 m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
263}
264
265static inline unchar *msg_data(struct tipc_msg *m)
266{
267 return ((unchar *)m) + msg_hdr_sz(m);
268}
269
270static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
271{
272 return (struct tipc_msg *)msg_data(m);
273}
274
275
276
277
278static inline u32 msg_type(struct tipc_msg *m)
279{
280 return msg_bits(m, 1, 29, 0x7);
281}
282
283static inline void msg_set_type(struct tipc_msg *m, u32 n)
284{
285 msg_set_bits(m, 1, 29, 0x7, n);
286}
287
288static inline int msg_in_group(struct tipc_msg *m)
289{
290 int mtyp = msg_type(m);
291
292 return mtyp >= TIPC_GRP_MEMBER_EVT && mtyp <= TIPC_GRP_UCAST_MSG;
293}
294
295static inline bool msg_is_grp_evt(struct tipc_msg *m)
296{
297 return msg_type(m) == TIPC_GRP_MEMBER_EVT;
298}
299
300static inline u32 msg_named(struct tipc_msg *m)
301{
302 return msg_type(m) == TIPC_NAMED_MSG;
303}
304
305static inline u32 msg_mcast(struct tipc_msg *m)
306{
307 int mtyp = msg_type(m);
308
309 return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) ||
310 (mtyp == TIPC_GRP_MCAST_MSG));
311}
312
313static inline u32 msg_connected(struct tipc_msg *m)
314{
315 return msg_type(m) == TIPC_CONN_MSG;
316}
317
318static inline u32 msg_errcode(struct tipc_msg *m)
319{
320 return msg_bits(m, 1, 25, 0xf);
321}
322
323static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
324{
325 msg_set_bits(m, 1, 25, 0xf, err);
326}
327
328static inline u32 msg_reroute_cnt(struct tipc_msg *m)
329{
330 return msg_bits(m, 1, 21, 0xf);
331}
332
333static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
334{
335 msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
336}
337
338static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
339{
340 msg_set_bits(m, 1, 21, 0xf, 0);
341}
342
343static inline u32 msg_lookup_scope(struct tipc_msg *m)
344{
345 return msg_bits(m, 1, 19, 0x3);
346}
347
348static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
349{
350 msg_set_bits(m, 1, 19, 0x3, n);
351}
352
353static inline u16 msg_bcast_ack(struct tipc_msg *m)
354{
355 return msg_bits(m, 1, 0, 0xffff);
356}
357
358static inline void msg_set_bcast_ack(struct tipc_msg *m, u16 n)
359{
360 msg_set_bits(m, 1, 0, 0xffff, n);
361}
362
363
364
365
366static inline bool msg_dest_session_valid(struct tipc_msg *m)
367{
368 return msg_bits(m, 1, 16, 0x1);
369}
370
371static inline void msg_set_dest_session_valid(struct tipc_msg *m, bool valid)
372{
373 msg_set_bits(m, 1, 16, 0x1, valid);
374}
375
376static inline u16 msg_dest_session(struct tipc_msg *m)
377{
378 return msg_bits(m, 1, 0, 0xffff);
379}
380
381static inline void msg_set_dest_session(struct tipc_msg *m, u16 n)
382{
383 msg_set_bits(m, 1, 0, 0xffff, n);
384}
385
386
387
388
389static inline u16 msg_ack(struct tipc_msg *m)
390{
391 return msg_bits(m, 2, 16, 0xffff);
392}
393
394static inline void msg_set_ack(struct tipc_msg *m, u16 n)
395{
396 msg_set_bits(m, 2, 16, 0xffff, n);
397}
398
399static inline u16 msg_seqno(struct tipc_msg *m)
400{
401 return msg_bits(m, 2, 0, 0xffff);
402}
403
404static inline void msg_set_seqno(struct tipc_msg *m, u16 n)
405{
406 msg_set_bits(m, 2, 0, 0xffff, n);
407}
408
409
410
411
412static inline u32 msg_importance(struct tipc_msg *m)
413{
414 int usr = msg_user(m);
415
416 if (likely((usr <= TIPC_CRITICAL_IMPORTANCE) && !msg_errcode(m)))
417 return usr;
418 if ((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER))
419 return msg_bits(m, 9, 0, 0x7);
420 return TIPC_SYSTEM_IMPORTANCE;
421}
422
423static inline void msg_set_importance(struct tipc_msg *m, u32 i)
424{
425 int usr = msg_user(m);
426
427 if (likely((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER)))
428 msg_set_bits(m, 9, 0, 0x7, i);
429 else if (i < TIPC_SYSTEM_IMPORTANCE)
430 msg_set_user(m, i);
431 else
432 pr_warn("Trying to set illegal importance in message\n");
433}
434
435static inline u32 msg_prevnode(struct tipc_msg *m)
436{
437 return msg_word(m, 3);
438}
439
440static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
441{
442 msg_set_word(m, 3, a);
443}
444
445static inline u32 msg_origport(struct tipc_msg *m)
446{
447 if (msg_user(m) == MSG_FRAGMENTER)
448 m = msg_get_wrapped(m);
449 return msg_word(m, 4);
450}
451
452static inline void msg_set_origport(struct tipc_msg *m, u32 p)
453{
454 msg_set_word(m, 4, p);
455}
456
457static inline u32 msg_destport(struct tipc_msg *m)
458{
459 return msg_word(m, 5);
460}
461
462static inline void msg_set_destport(struct tipc_msg *m, u32 p)
463{
464 msg_set_word(m, 5, p);
465}
466
467static inline u32 msg_mc_netid(struct tipc_msg *m)
468{
469 return msg_word(m, 5);
470}
471
472static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
473{
474 msg_set_word(m, 5, p);
475}
476
477static inline int msg_short(struct tipc_msg *m)
478{
479 return msg_hdr_sz(m) == SHORT_H_SIZE;
480}
481
482static inline u32 msg_orignode(struct tipc_msg *m)
483{
484 if (likely(msg_short(m)))
485 return msg_prevnode(m);
486 return msg_word(m, 6);
487}
488
489static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
490{
491 msg_set_word(m, 6, a);
492}
493
494static inline u32 msg_destnode(struct tipc_msg *m)
495{
496 return msg_word(m, 7);
497}
498
499static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
500{
501 msg_set_word(m, 7, a);
502}
503
504static inline u32 msg_nametype(struct tipc_msg *m)
505{
506 return msg_word(m, 8);
507}
508
509static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
510{
511 msg_set_word(m, 8, n);
512}
513
514static inline u32 msg_nameinst(struct tipc_msg *m)
515{
516 return msg_word(m, 9);
517}
518
519static inline u32 msg_namelower(struct tipc_msg *m)
520{
521 return msg_nameinst(m);
522}
523
524static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
525{
526 msg_set_word(m, 9, n);
527}
528
529static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
530{
531 msg_set_namelower(m, n);
532}
533
534static inline u32 msg_nameupper(struct tipc_msg *m)
535{
536 return msg_word(m, 10);
537}
538
539static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
540{
541 msg_set_word(m, 10, n);
542}
543
544
545
546
547
548
549
550
551#define CONN_PROBE 0
552#define CONN_PROBE_REPLY 1
553#define CONN_ACK 2
554
555
556
557
558#define PUBLICATION 0
559#define WITHDRAWAL 1
560
561
562
563
564#define FIRST_FRAGMENT 0
565#define FRAGMENT 1
566#define LAST_FRAGMENT 2
567
568
569
570
571#define STATE_MSG 0
572#define RESET_MSG 1
573#define ACTIVATE_MSG 2
574
575
576
577
578#define SYNCH_MSG 0
579#define FAILOVER_MSG 1
580
581
582
583
584#define DSC_REQ_MSG 0
585#define DSC_RESP_MSG 1
586#define DSC_TRIAL_MSG 2
587#define DSC_TRIAL_FAIL_MSG 3
588
589
590
591
592#define GRP_JOIN_MSG 0
593#define GRP_LEAVE_MSG 1
594#define GRP_ADV_MSG 2
595#define GRP_ACK_MSG 3
596#define GRP_RECLAIM_MSG 4
597#define GRP_REMIT_MSG 5
598
599
600
601
602static inline u32 msg_seq_gap(struct tipc_msg *m)
603{
604 return msg_bits(m, 1, 16, 0x1fff);
605}
606
607static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
608{
609 msg_set_bits(m, 1, 16, 0x1fff, n);
610}
611
612static inline u32 msg_node_sig(struct tipc_msg *m)
613{
614 return msg_bits(m, 1, 0, 0xffff);
615}
616
617static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
618{
619 msg_set_bits(m, 1, 0, 0xffff, n);
620}
621
622static inline u32 msg_node_capabilities(struct tipc_msg *m)
623{
624 return msg_bits(m, 1, 15, 0x1fff);
625}
626
627static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n)
628{
629 msg_set_bits(m, 1, 15, 0x1fff, n);
630}
631
632
633
634
635static inline u32 msg_dest_domain(struct tipc_msg *m)
636{
637 return msg_word(m, 2);
638}
639
640static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
641{
642 msg_set_word(m, 2, n);
643}
644
645static inline u32 msg_bcgap_after(struct tipc_msg *m)
646{
647 return msg_bits(m, 2, 16, 0xffff);
648}
649
650static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
651{
652 msg_set_bits(m, 2, 16, 0xffff, n);
653}
654
655static inline u32 msg_bcgap_to(struct tipc_msg *m)
656{
657 return msg_bits(m, 2, 0, 0xffff);
658}
659
660static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
661{
662 msg_set_bits(m, 2, 0, 0xffff, n);
663}
664
665
666
667
668static inline u32 msg_last_bcast(struct tipc_msg *m)
669{
670 return msg_bits(m, 4, 16, 0xffff);
671}
672
673static inline u32 msg_bc_snd_nxt(struct tipc_msg *m)
674{
675 return msg_last_bcast(m) + 1;
676}
677
678static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
679{
680 msg_set_bits(m, 4, 16, 0xffff, n);
681}
682
683static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
684{
685 msg_set_bits(m, 4, 16, 0xffff, n);
686}
687
688
689static inline u16 msg_next_sent(struct tipc_msg *m)
690{
691 return msg_bits(m, 4, 0, 0xffff);
692}
693
694static inline void msg_set_next_sent(struct tipc_msg *m, u16 n)
695{
696 msg_set_bits(m, 4, 0, 0xffff, n);
697}
698
699static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
700{
701 msg_set_bits(m, 4, 0, 0xffff, n);
702}
703
704static inline u32 msg_bc_netid(struct tipc_msg *m)
705{
706 return msg_word(m, 4);
707}
708
709static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
710{
711 msg_set_word(m, 4, id);
712}
713
714static inline u32 msg_link_selector(struct tipc_msg *m)
715{
716 if (msg_user(m) == MSG_FRAGMENTER)
717 m = (void *)msg_data(m);
718 return msg_bits(m, 4, 0, 1);
719}
720
721
722
723
724static inline u16 msg_session(struct tipc_msg *m)
725{
726 return msg_bits(m, 5, 16, 0xffff);
727}
728
729static inline void msg_set_session(struct tipc_msg *m, u16 n)
730{
731 msg_set_bits(m, 5, 16, 0xffff, n);
732}
733
734static inline u32 msg_probe(struct tipc_msg *m)
735{
736 return msg_bits(m, 5, 0, 1);
737}
738
739static inline void msg_set_probe(struct tipc_msg *m, u32 val)
740{
741 msg_set_bits(m, 5, 0, 1, val);
742}
743
744static inline char msg_net_plane(struct tipc_msg *m)
745{
746 return msg_bits(m, 5, 1, 7) + 'A';
747}
748
749static inline void msg_set_net_plane(struct tipc_msg *m, char n)
750{
751 msg_set_bits(m, 5, 1, 7, (n - 'A'));
752}
753
754static inline u32 msg_linkprio(struct tipc_msg *m)
755{
756 return msg_bits(m, 5, 4, 0x1f);
757}
758
759static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
760{
761 msg_set_bits(m, 5, 4, 0x1f, n);
762}
763
764static inline u32 msg_bearer_id(struct tipc_msg *m)
765{
766 return msg_bits(m, 5, 9, 0x7);
767}
768
769static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
770{
771 msg_set_bits(m, 5, 9, 0x7, n);
772}
773
774static inline u32 msg_redundant_link(struct tipc_msg *m)
775{
776 return msg_bits(m, 5, 12, 0x1);
777}
778
779static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
780{
781 msg_set_bits(m, 5, 12, 0x1, r);
782}
783
784static inline u32 msg_peer_stopping(struct tipc_msg *m)
785{
786 return msg_bits(m, 5, 13, 0x1);
787}
788
789static inline void msg_set_peer_stopping(struct tipc_msg *m, u32 s)
790{
791 msg_set_bits(m, 5, 13, 0x1, s);
792}
793
794static inline bool msg_bc_ack_invalid(struct tipc_msg *m)
795{
796 switch (msg_user(m)) {
797 case BCAST_PROTOCOL:
798 case NAME_DISTRIBUTOR:
799 case LINK_PROTOCOL:
800 return msg_bits(m, 5, 14, 0x1);
801 default:
802 return false;
803 }
804}
805
806static inline void msg_set_bc_ack_invalid(struct tipc_msg *m, bool invalid)
807{
808 msg_set_bits(m, 5, 14, 0x1, invalid);
809}
810
811static inline char *msg_media_addr(struct tipc_msg *m)
812{
813 return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET];
814}
815
816static inline u32 msg_bc_gap(struct tipc_msg *m)
817{
818 return msg_bits(m, 8, 0, 0x3ff);
819}
820
821static inline void msg_set_bc_gap(struct tipc_msg *m, u32 n)
822{
823 msg_set_bits(m, 8, 0, 0x3ff, n);
824}
825
826
827
828
829static inline u16 msg_msgcnt(struct tipc_msg *m)
830{
831 return msg_bits(m, 9, 16, 0xffff);
832}
833
834static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n)
835{
836 msg_set_bits(m, 9, 16, 0xffff, n);
837}
838
839static inline u32 msg_conn_ack(struct tipc_msg *m)
840{
841 return msg_bits(m, 9, 16, 0xffff);
842}
843
844static inline void msg_set_conn_ack(struct tipc_msg *m, u32 n)
845{
846 msg_set_bits(m, 9, 16, 0xffff, n);
847}
848
849static inline u16 msg_adv_win(struct tipc_msg *m)
850{
851 return msg_bits(m, 9, 0, 0xffff);
852}
853
854static inline void msg_set_adv_win(struct tipc_msg *m, u16 n)
855{
856 msg_set_bits(m, 9, 0, 0xffff, n);
857}
858
859static inline u32 msg_max_pkt(struct tipc_msg *m)
860{
861 return msg_bits(m, 9, 16, 0xffff) * 4;
862}
863
864static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
865{
866 msg_set_bits(m, 9, 16, 0xffff, (n / 4));
867}
868
869static inline u32 msg_link_tolerance(struct tipc_msg *m)
870{
871 return msg_bits(m, 9, 0, 0xffff);
872}
873
874static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
875{
876 msg_set_bits(m, 9, 0, 0xffff, n);
877}
878
879static inline u16 msg_grp_bc_syncpt(struct tipc_msg *m)
880{
881 return msg_bits(m, 9, 16, 0xffff);
882}
883
884static inline void msg_set_grp_bc_syncpt(struct tipc_msg *m, u16 n)
885{
886 msg_set_bits(m, 9, 16, 0xffff, n);
887}
888
889static inline u16 msg_grp_bc_acked(struct tipc_msg *m)
890{
891 return msg_bits(m, 9, 16, 0xffff);
892}
893
894static inline void msg_set_grp_bc_acked(struct tipc_msg *m, u16 n)
895{
896 msg_set_bits(m, 9, 16, 0xffff, n);
897}
898
899static inline u16 msg_grp_remitted(struct tipc_msg *m)
900{
901 return msg_bits(m, 9, 16, 0xffff);
902}
903
904static inline void msg_set_grp_remitted(struct tipc_msg *m, u16 n)
905{
906 msg_set_bits(m, 9, 16, 0xffff, n);
907}
908
909
910
911static inline u16 msg_grp_evt(struct tipc_msg *m)
912{
913 return msg_bits(m, 10, 0, 0x3);
914}
915
916static inline void msg_set_grp_evt(struct tipc_msg *m, int n)
917{
918 msg_set_bits(m, 10, 0, 0x3, n);
919}
920
921static inline u16 msg_grp_bc_ack_req(struct tipc_msg *m)
922{
923 return msg_bits(m, 10, 0, 0x1);
924}
925
926static inline void msg_set_grp_bc_ack_req(struct tipc_msg *m, bool n)
927{
928 msg_set_bits(m, 10, 0, 0x1, n);
929}
930
931static inline u16 msg_grp_bc_seqno(struct tipc_msg *m)
932{
933 return msg_bits(m, 10, 16, 0xffff);
934}
935
936static inline void msg_set_grp_bc_seqno(struct tipc_msg *m, u32 n)
937{
938 msg_set_bits(m, 10, 16, 0xffff, n);
939}
940
941static inline bool msg_peer_link_is_up(struct tipc_msg *m)
942{
943 if (likely(msg_user(m) != LINK_PROTOCOL))
944 return true;
945 if (msg_type(m) == STATE_MSG)
946 return true;
947 return false;
948}
949
950static inline bool msg_peer_node_is_up(struct tipc_msg *m)
951{
952 if (msg_peer_link_is_up(m))
953 return true;
954 return msg_redundant_link(m);
955}
956
957static inline bool msg_is_reset(struct tipc_msg *hdr)
958{
959 return (msg_user(hdr) == LINK_PROTOCOL) && (msg_type(hdr) == RESET_MSG);
960}
961
962static inline u32 msg_sugg_node_addr(struct tipc_msg *m)
963{
964 return msg_word(m, 14);
965}
966
967static inline void msg_set_sugg_node_addr(struct tipc_msg *m, u32 n)
968{
969 msg_set_word(m, 14, n);
970}
971
972static inline void msg_set_node_id(struct tipc_msg *hdr, u8 *id)
973{
974 memcpy(msg_data(hdr), id, 16);
975}
976
977static inline u8 *msg_node_id(struct tipc_msg *hdr)
978{
979 return (u8 *)msg_data(hdr);
980}
981
982struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp);
983bool tipc_msg_validate(struct sk_buff **_skb);
984bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err);
985void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb,
986 struct sk_buff_head *xmitq);
987void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type,
988 u32 hsize, u32 destnode);
989struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
990 uint data_sz, u32 dnode, u32 onode,
991 u32 dport, u32 oport, int errcode);
992int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf);
993bool tipc_msg_bundle(struct sk_buff *skb, struct tipc_msg *msg, u32 mtu);
994bool tipc_msg_make_bundle(struct sk_buff **skb, struct tipc_msg *msg,
995 u32 mtu, u32 dnode);
996bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos);
997int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
998 int offset, int dsz, int mtu, struct sk_buff_head *list);
999bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err);
1000bool tipc_msg_assemble(struct sk_buff_head *list);
1001bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq);
1002bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg,
1003 struct sk_buff_head *cpy);
1004void __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno,
1005 struct sk_buff *skb);
1006bool tipc_msg_skb_clone(struct sk_buff_head *msg, struct sk_buff_head *cpy);
1007
1008static inline u16 buf_seqno(struct sk_buff *skb)
1009{
1010 return msg_seqno(buf_msg(skb));
1011}
1012
1013static inline int buf_roundup_len(struct sk_buff *skb)
1014{
1015 return (skb->len / 1024 + 1) * 1024;
1016}
1017
1018
1019
1020
1021
1022static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list,
1023 spinlock_t *lock)
1024{
1025 struct sk_buff *skb;
1026
1027 spin_lock_bh(lock);
1028 skb = skb_peek(list);
1029 if (skb)
1030 skb_get(skb);
1031 spin_unlock_bh(lock);
1032 return skb;
1033}
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter)
1044{
1045 struct sk_buff *skb;
1046 u32 dport = 0;
1047 bool ignore = true;
1048
1049 spin_lock_bh(&list->lock);
1050 skb_queue_walk(list, skb) {
1051 dport = msg_destport(buf_msg(skb));
1052 if (!filter || skb_queue_is_last(list, skb))
1053 break;
1054 if (dport == filter)
1055 ignore = false;
1056 else if (!ignore)
1057 break;
1058 }
1059 spin_unlock_bh(&list->lock);
1060 return dport;
1061}
1062
1063
1064
1065
1066
1067static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list,
1068 u32 dport)
1069{
1070 struct sk_buff *_skb, *tmp, *skb = NULL;
1071
1072 spin_lock_bh(&list->lock);
1073 skb_queue_walk_safe(list, _skb, tmp) {
1074 if (msg_destport(buf_msg(_skb)) == dport) {
1075 __skb_unlink(_skb, list);
1076 skb = _skb;
1077 break;
1078 }
1079 }
1080 spin_unlock_bh(&list->lock);
1081 return skb;
1082}
1083
1084
1085
1086
1087
1088static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list,
1089 struct sk_buff_head *head)
1090{
1091 spin_lock_bh(&head->lock);
1092 skb_queue_splice_tail(list, head);
1093 spin_unlock_bh(&head->lock);
1094}
1095
1096
1097
1098
1099
1100static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list,
1101 struct sk_buff_head *head)
1102{
1103 struct sk_buff_head tmp;
1104
1105 __skb_queue_head_init(&tmp);
1106
1107 spin_lock_bh(&list->lock);
1108 skb_queue_splice_tail_init(list, &tmp);
1109 spin_unlock_bh(&list->lock);
1110 tipc_skb_queue_splice_tail(&tmp, head);
1111}
1112
1113#endif
1114