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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 struct sk_buff *tail;
106 unsigned long nxt_retr;
107 unsigned long retr_stamp;
108 u32 bytes_read;
109 u32 orig_member;
110 u16 chain_imp;
111 u16 ackers;
112 u16 retr_cnt;
113 bool validated;
114};
115
116#define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0]))
117
118struct tipc_msg {
119 __be32 hdr[15];
120};
121
122
123
124
125
126
127
128
129
130struct tipc_gap_ack {
131 __be16 ack;
132 __be16 gap;
133};
134
135
136
137
138
139
140struct tipc_gap_ack_blks {
141 __be16 len;
142 u8 gack_cnt;
143 u8 reserved;
144 struct tipc_gap_ack gacks[];
145};
146
147#define tipc_gap_ack_blks_sz(n) (sizeof(struct tipc_gap_ack_blks) + \
148 sizeof(struct tipc_gap_ack) * (n))
149
150#define MAX_GAP_ACK_BLKS 32
151#define MAX_GAP_ACK_BLKS_SZ tipc_gap_ack_blks_sz(MAX_GAP_ACK_BLKS)
152
153static inline struct tipc_msg *buf_msg(struct sk_buff *skb)
154{
155 return (struct tipc_msg *)skb->data;
156}
157
158static inline u32 msg_word(struct tipc_msg *m, u32 pos)
159{
160 return ntohl(m->hdr[pos]);
161}
162
163static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
164{
165 m->hdr[w] = htonl(val);
166}
167
168static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
169{
170 return (msg_word(m, w) >> pos) & mask;
171}
172
173static inline void msg_set_bits(struct tipc_msg *m, u32 w,
174 u32 pos, u32 mask, u32 val)
175{
176 val = (val & mask) << pos;
177 mask = mask << pos;
178 m->hdr[w] &= ~htonl(mask);
179 m->hdr[w] |= htonl(val);
180}
181
182static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
183{
184 u32 temp = msg->hdr[a];
185
186 msg->hdr[a] = msg->hdr[b];
187 msg->hdr[b] = temp;
188}
189
190
191
192
193static inline u32 msg_version(struct tipc_msg *m)
194{
195 return msg_bits(m, 0, 29, 7);
196}
197
198static inline void msg_set_version(struct tipc_msg *m)
199{
200 msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
201}
202
203static inline u32 msg_user(struct tipc_msg *m)
204{
205 return msg_bits(m, 0, 25, 0xf);
206}
207
208static inline u32 msg_isdata(struct tipc_msg *m)
209{
210 return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
211}
212
213static inline void msg_set_user(struct tipc_msg *m, u32 n)
214{
215 msg_set_bits(m, 0, 25, 0xf, n);
216}
217
218static inline u32 msg_hdr_sz(struct tipc_msg *m)
219{
220 return msg_bits(m, 0, 21, 0xf) << 2;
221}
222
223static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
224{
225 msg_set_bits(m, 0, 21, 0xf, n>>2);
226}
227
228static inline u32 msg_size(struct tipc_msg *m)
229{
230 return msg_bits(m, 0, 0, 0x1ffff);
231}
232
233static inline u32 msg_blocks(struct tipc_msg *m)
234{
235 return (msg_size(m) / 1024) + 1;
236}
237
238static inline u32 msg_data_sz(struct tipc_msg *m)
239{
240 return msg_size(m) - msg_hdr_sz(m);
241}
242
243static inline int msg_non_seq(struct tipc_msg *m)
244{
245 return msg_bits(m, 0, 20, 1);
246}
247
248static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
249{
250 msg_set_bits(m, 0, 20, 1, n);
251}
252
253static inline int msg_is_syn(struct tipc_msg *m)
254{
255 return msg_bits(m, 0, 17, 1);
256}
257
258static inline void msg_set_syn(struct tipc_msg *m, u32 d)
259{
260 msg_set_bits(m, 0, 17, 1, d);
261}
262
263static inline int msg_dest_droppable(struct tipc_msg *m)
264{
265 return msg_bits(m, 0, 19, 1);
266}
267
268static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
269{
270 msg_set_bits(m, 0, 19, 1, d);
271}
272
273static inline int msg_is_keepalive(struct tipc_msg *m)
274{
275 return msg_bits(m, 0, 19, 1);
276}
277
278static inline void msg_set_is_keepalive(struct tipc_msg *m, u32 d)
279{
280 msg_set_bits(m, 0, 19, 1, d);
281}
282
283static inline int msg_src_droppable(struct tipc_msg *m)
284{
285 return msg_bits(m, 0, 18, 1);
286}
287
288static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
289{
290 msg_set_bits(m, 0, 18, 1, d);
291}
292
293static inline bool msg_is_rcast(struct tipc_msg *m)
294{
295 return msg_bits(m, 0, 18, 0x1);
296}
297
298static inline void msg_set_is_rcast(struct tipc_msg *m, bool d)
299{
300 msg_set_bits(m, 0, 18, 0x1, d);
301}
302
303static inline void msg_set_size(struct tipc_msg *m, u32 sz)
304{
305 m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
306}
307
308static inline unchar *msg_data(struct tipc_msg *m)
309{
310 return ((unchar *)m) + msg_hdr_sz(m);
311}
312
313static inline struct tipc_msg *msg_inner_hdr(struct tipc_msg *m)
314{
315 return (struct tipc_msg *)msg_data(m);
316}
317
318
319
320
321static inline u32 msg_type(struct tipc_msg *m)
322{
323 return msg_bits(m, 1, 29, 0x7);
324}
325
326static inline void msg_set_type(struct tipc_msg *m, u32 n)
327{
328 msg_set_bits(m, 1, 29, 0x7, n);
329}
330
331static inline int msg_in_group(struct tipc_msg *m)
332{
333 int mtyp = msg_type(m);
334
335 return mtyp >= TIPC_GRP_MEMBER_EVT && mtyp <= TIPC_GRP_UCAST_MSG;
336}
337
338static inline bool msg_is_grp_evt(struct tipc_msg *m)
339{
340 return msg_type(m) == TIPC_GRP_MEMBER_EVT;
341}
342
343static inline u32 msg_named(struct tipc_msg *m)
344{
345 return msg_type(m) == TIPC_NAMED_MSG;
346}
347
348static inline u32 msg_mcast(struct tipc_msg *m)
349{
350 int mtyp = msg_type(m);
351
352 return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) ||
353 (mtyp == TIPC_GRP_MCAST_MSG));
354}
355
356static inline u32 msg_connected(struct tipc_msg *m)
357{
358 return msg_type(m) == TIPC_CONN_MSG;
359}
360
361static inline u32 msg_errcode(struct tipc_msg *m)
362{
363 return msg_bits(m, 1, 25, 0xf);
364}
365
366static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
367{
368 msg_set_bits(m, 1, 25, 0xf, err);
369}
370
371static inline u32 msg_reroute_cnt(struct tipc_msg *m)
372{
373 return msg_bits(m, 1, 21, 0xf);
374}
375
376static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
377{
378 msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
379}
380
381static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
382{
383 msg_set_bits(m, 1, 21, 0xf, 0);
384}
385
386static inline u32 msg_lookup_scope(struct tipc_msg *m)
387{
388 return msg_bits(m, 1, 19, 0x3);
389}
390
391static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
392{
393 msg_set_bits(m, 1, 19, 0x3, n);
394}
395
396static inline u16 msg_bcast_ack(struct tipc_msg *m)
397{
398 return msg_bits(m, 1, 0, 0xffff);
399}
400
401static inline void msg_set_bcast_ack(struct tipc_msg *m, u16 n)
402{
403 msg_set_bits(m, 1, 0, 0xffff, n);
404}
405
406
407
408
409static inline bool msg_dest_session_valid(struct tipc_msg *m)
410{
411 return msg_bits(m, 1, 16, 0x1);
412}
413
414static inline void msg_set_dest_session_valid(struct tipc_msg *m, bool valid)
415{
416 msg_set_bits(m, 1, 16, 0x1, valid);
417}
418
419static inline u16 msg_dest_session(struct tipc_msg *m)
420{
421 return msg_bits(m, 1, 0, 0xffff);
422}
423
424static inline void msg_set_dest_session(struct tipc_msg *m, u16 n)
425{
426 msg_set_bits(m, 1, 0, 0xffff, n);
427}
428
429
430
431
432static inline u16 msg_ack(struct tipc_msg *m)
433{
434 return msg_bits(m, 2, 16, 0xffff);
435}
436
437static inline void msg_set_ack(struct tipc_msg *m, u16 n)
438{
439 msg_set_bits(m, 2, 16, 0xffff, n);
440}
441
442static inline u16 msg_seqno(struct tipc_msg *m)
443{
444 return msg_bits(m, 2, 0, 0xffff);
445}
446
447static inline void msg_set_seqno(struct tipc_msg *m, u16 n)
448{
449 msg_set_bits(m, 2, 0, 0xffff, n);
450}
451
452
453
454
455static inline u32 msg_importance(struct tipc_msg *m)
456{
457 int usr = msg_user(m);
458
459 if (likely((usr <= TIPC_CRITICAL_IMPORTANCE) && !msg_errcode(m)))
460 return usr;
461 if ((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER))
462 return msg_bits(m, 9, 0, 0x7);
463 return TIPC_SYSTEM_IMPORTANCE;
464}
465
466static inline void msg_set_importance(struct tipc_msg *m, u32 i)
467{
468 int usr = msg_user(m);
469
470 if (likely((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER)))
471 msg_set_bits(m, 9, 0, 0x7, i);
472 else if (i < TIPC_SYSTEM_IMPORTANCE)
473 msg_set_user(m, i);
474 else
475 pr_warn("Trying to set illegal importance in message\n");
476}
477
478static inline u32 msg_prevnode(struct tipc_msg *m)
479{
480 return msg_word(m, 3);
481}
482
483static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
484{
485 msg_set_word(m, 3, a);
486}
487
488static inline u32 msg_origport(struct tipc_msg *m)
489{
490 if (msg_user(m) == MSG_FRAGMENTER)
491 m = msg_inner_hdr(m);
492 return msg_word(m, 4);
493}
494
495static inline void msg_set_origport(struct tipc_msg *m, u32 p)
496{
497 msg_set_word(m, 4, p);
498}
499
500static inline u32 msg_destport(struct tipc_msg *m)
501{
502 return msg_word(m, 5);
503}
504
505static inline void msg_set_destport(struct tipc_msg *m, u32 p)
506{
507 msg_set_word(m, 5, p);
508}
509
510static inline u32 msg_mc_netid(struct tipc_msg *m)
511{
512 return msg_word(m, 5);
513}
514
515static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
516{
517 msg_set_word(m, 5, p);
518}
519
520static inline int msg_short(struct tipc_msg *m)
521{
522 return msg_hdr_sz(m) == SHORT_H_SIZE;
523}
524
525static inline u32 msg_orignode(struct tipc_msg *m)
526{
527 if (likely(msg_short(m)))
528 return msg_prevnode(m);
529 return msg_word(m, 6);
530}
531
532static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
533{
534 msg_set_word(m, 6, a);
535}
536
537static inline u32 msg_destnode(struct tipc_msg *m)
538{
539 return msg_word(m, 7);
540}
541
542static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
543{
544 msg_set_word(m, 7, a);
545}
546
547static inline u32 msg_nametype(struct tipc_msg *m)
548{
549 return msg_word(m, 8);
550}
551
552static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
553{
554 msg_set_word(m, 8, n);
555}
556
557static inline u32 msg_nameinst(struct tipc_msg *m)
558{
559 return msg_word(m, 9);
560}
561
562static inline u32 msg_namelower(struct tipc_msg *m)
563{
564 return msg_nameinst(m);
565}
566
567static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
568{
569 msg_set_word(m, 9, n);
570}
571
572static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
573{
574 msg_set_namelower(m, n);
575}
576
577static inline u32 msg_nameupper(struct tipc_msg *m)
578{
579 return msg_word(m, 10);
580}
581
582static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
583{
584 msg_set_word(m, 10, n);
585}
586
587
588
589
590
591
592
593
594#define CONN_PROBE 0
595#define CONN_PROBE_REPLY 1
596#define CONN_ACK 2
597
598
599
600
601#define PUBLICATION 0
602#define WITHDRAWAL 1
603
604
605
606
607#define FIRST_FRAGMENT 0
608#define FRAGMENT 1
609#define LAST_FRAGMENT 2
610
611
612
613
614#define STATE_MSG 0
615#define RESET_MSG 1
616#define ACTIVATE_MSG 2
617
618
619
620
621#define SYNCH_MSG 0
622#define FAILOVER_MSG 1
623
624
625
626
627#define DSC_REQ_MSG 0
628#define DSC_RESP_MSG 1
629#define DSC_TRIAL_MSG 2
630#define DSC_TRIAL_FAIL_MSG 3
631
632
633
634
635#define GRP_JOIN_MSG 0
636#define GRP_LEAVE_MSG 1
637#define GRP_ADV_MSG 2
638#define GRP_ACK_MSG 3
639#define GRP_RECLAIM_MSG 4
640#define GRP_REMIT_MSG 5
641
642
643
644
645static inline u32 msg_seq_gap(struct tipc_msg *m)
646{
647 return msg_bits(m, 1, 16, 0x1fff);
648}
649
650static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
651{
652 msg_set_bits(m, 1, 16, 0x1fff, n);
653}
654
655static inline u32 msg_node_sig(struct tipc_msg *m)
656{
657 return msg_bits(m, 1, 0, 0xffff);
658}
659
660static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
661{
662 msg_set_bits(m, 1, 0, 0xffff, n);
663}
664
665static inline u32 msg_node_capabilities(struct tipc_msg *m)
666{
667 return msg_bits(m, 1, 15, 0x1fff);
668}
669
670static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n)
671{
672 msg_set_bits(m, 1, 15, 0x1fff, n);
673}
674
675
676
677
678static inline u32 msg_dest_domain(struct tipc_msg *m)
679{
680 return msg_word(m, 2);
681}
682
683static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
684{
685 msg_set_word(m, 2, n);
686}
687
688static inline u32 msg_bcgap_after(struct tipc_msg *m)
689{
690 return msg_bits(m, 2, 16, 0xffff);
691}
692
693static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
694{
695 msg_set_bits(m, 2, 16, 0xffff, n);
696}
697
698static inline u32 msg_bcgap_to(struct tipc_msg *m)
699{
700 return msg_bits(m, 2, 0, 0xffff);
701}
702
703static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
704{
705 msg_set_bits(m, 2, 0, 0xffff, n);
706}
707
708
709
710
711static inline u32 msg_last_bcast(struct tipc_msg *m)
712{
713 return msg_bits(m, 4, 16, 0xffff);
714}
715
716static inline u32 msg_bc_snd_nxt(struct tipc_msg *m)
717{
718 return msg_last_bcast(m) + 1;
719}
720
721static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
722{
723 msg_set_bits(m, 4, 16, 0xffff, n);
724}
725
726static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
727{
728 msg_set_bits(m, 4, 16, 0xffff, n);
729}
730
731
732static inline u16 msg_next_sent(struct tipc_msg *m)
733{
734 return msg_bits(m, 4, 0, 0xffff);
735}
736
737static inline void msg_set_next_sent(struct tipc_msg *m, u16 n)
738{
739 msg_set_bits(m, 4, 0, 0xffff, n);
740}
741
742static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
743{
744 msg_set_bits(m, 4, 0, 0xffff, n);
745}
746
747static inline u32 msg_bc_netid(struct tipc_msg *m)
748{
749 return msg_word(m, 4);
750}
751
752static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
753{
754 msg_set_word(m, 4, id);
755}
756
757static inline u32 msg_link_selector(struct tipc_msg *m)
758{
759 if (msg_user(m) == MSG_FRAGMENTER)
760 m = (void *)msg_data(m);
761 return msg_bits(m, 4, 0, 1);
762}
763
764
765
766
767static inline u16 msg_session(struct tipc_msg *m)
768{
769 return msg_bits(m, 5, 16, 0xffff);
770}
771
772static inline void msg_set_session(struct tipc_msg *m, u16 n)
773{
774 msg_set_bits(m, 5, 16, 0xffff, n);
775}
776
777static inline u32 msg_probe(struct tipc_msg *m)
778{
779 return msg_bits(m, 5, 0, 1);
780}
781
782static inline void msg_set_probe(struct tipc_msg *m, u32 val)
783{
784 msg_set_bits(m, 5, 0, 1, val);
785}
786
787static inline char msg_net_plane(struct tipc_msg *m)
788{
789 return msg_bits(m, 5, 1, 7) + 'A';
790}
791
792static inline void msg_set_net_plane(struct tipc_msg *m, char n)
793{
794 msg_set_bits(m, 5, 1, 7, (n - 'A'));
795}
796
797static inline u32 msg_linkprio(struct tipc_msg *m)
798{
799 return msg_bits(m, 5, 4, 0x1f);
800}
801
802static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
803{
804 msg_set_bits(m, 5, 4, 0x1f, n);
805}
806
807static inline u32 msg_bearer_id(struct tipc_msg *m)
808{
809 return msg_bits(m, 5, 9, 0x7);
810}
811
812static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
813{
814 msg_set_bits(m, 5, 9, 0x7, n);
815}
816
817static inline u32 msg_redundant_link(struct tipc_msg *m)
818{
819 return msg_bits(m, 5, 12, 0x1);
820}
821
822static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
823{
824 msg_set_bits(m, 5, 12, 0x1, r);
825}
826
827static inline u32 msg_peer_stopping(struct tipc_msg *m)
828{
829 return msg_bits(m, 5, 13, 0x1);
830}
831
832static inline void msg_set_peer_stopping(struct tipc_msg *m, u32 s)
833{
834 msg_set_bits(m, 5, 13, 0x1, s);
835}
836
837static inline bool msg_bc_ack_invalid(struct tipc_msg *m)
838{
839 switch (msg_user(m)) {
840 case BCAST_PROTOCOL:
841 case NAME_DISTRIBUTOR:
842 case LINK_PROTOCOL:
843 return msg_bits(m, 5, 14, 0x1);
844 default:
845 return false;
846 }
847}
848
849static inline void msg_set_bc_ack_invalid(struct tipc_msg *m, bool invalid)
850{
851 msg_set_bits(m, 5, 14, 0x1, invalid);
852}
853
854static inline char *msg_media_addr(struct tipc_msg *m)
855{
856 return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET];
857}
858
859static inline u32 msg_bc_gap(struct tipc_msg *m)
860{
861 return msg_bits(m, 8, 0, 0x3ff);
862}
863
864static inline void msg_set_bc_gap(struct tipc_msg *m, u32 n)
865{
866 msg_set_bits(m, 8, 0, 0x3ff, n);
867}
868
869
870
871
872static inline u16 msg_msgcnt(struct tipc_msg *m)
873{
874 return msg_bits(m, 9, 16, 0xffff);
875}
876
877static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n)
878{
879 msg_set_bits(m, 9, 16, 0xffff, n);
880}
881
882static inline u32 msg_conn_ack(struct tipc_msg *m)
883{
884 return msg_bits(m, 9, 16, 0xffff);
885}
886
887static inline void msg_set_conn_ack(struct tipc_msg *m, u32 n)
888{
889 msg_set_bits(m, 9, 16, 0xffff, n);
890}
891
892static inline u16 msg_adv_win(struct tipc_msg *m)
893{
894 return msg_bits(m, 9, 0, 0xffff);
895}
896
897static inline void msg_set_adv_win(struct tipc_msg *m, u16 n)
898{
899 msg_set_bits(m, 9, 0, 0xffff, n);
900}
901
902static inline u32 msg_max_pkt(struct tipc_msg *m)
903{
904 return msg_bits(m, 9, 16, 0xffff) * 4;
905}
906
907static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
908{
909 msg_set_bits(m, 9, 16, 0xffff, (n / 4));
910}
911
912static inline u32 msg_link_tolerance(struct tipc_msg *m)
913{
914 return msg_bits(m, 9, 0, 0xffff);
915}
916
917static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
918{
919 msg_set_bits(m, 9, 0, 0xffff, n);
920}
921
922static inline u16 msg_grp_bc_syncpt(struct tipc_msg *m)
923{
924 return msg_bits(m, 9, 16, 0xffff);
925}
926
927static inline void msg_set_grp_bc_syncpt(struct tipc_msg *m, u16 n)
928{
929 msg_set_bits(m, 9, 16, 0xffff, n);
930}
931
932static inline u16 msg_grp_bc_acked(struct tipc_msg *m)
933{
934 return msg_bits(m, 9, 16, 0xffff);
935}
936
937static inline void msg_set_grp_bc_acked(struct tipc_msg *m, u16 n)
938{
939 msg_set_bits(m, 9, 16, 0xffff, n);
940}
941
942static inline u16 msg_grp_remitted(struct tipc_msg *m)
943{
944 return msg_bits(m, 9, 16, 0xffff);
945}
946
947static inline void msg_set_grp_remitted(struct tipc_msg *m, u16 n)
948{
949 msg_set_bits(m, 9, 16, 0xffff, n);
950}
951
952
953
954static inline u16 msg_grp_evt(struct tipc_msg *m)
955{
956 return msg_bits(m, 10, 0, 0x3);
957}
958
959static inline void msg_set_grp_evt(struct tipc_msg *m, int n)
960{
961 msg_set_bits(m, 10, 0, 0x3, n);
962}
963
964static inline u16 msg_grp_bc_ack_req(struct tipc_msg *m)
965{
966 return msg_bits(m, 10, 0, 0x1);
967}
968
969static inline void msg_set_grp_bc_ack_req(struct tipc_msg *m, bool n)
970{
971 msg_set_bits(m, 10, 0, 0x1, n);
972}
973
974static inline u16 msg_grp_bc_seqno(struct tipc_msg *m)
975{
976 return msg_bits(m, 10, 16, 0xffff);
977}
978
979static inline void msg_set_grp_bc_seqno(struct tipc_msg *m, u32 n)
980{
981 msg_set_bits(m, 10, 16, 0xffff, n);
982}
983
984static inline bool msg_peer_link_is_up(struct tipc_msg *m)
985{
986 if (likely(msg_user(m) != LINK_PROTOCOL))
987 return true;
988 if (msg_type(m) == STATE_MSG)
989 return true;
990 return false;
991}
992
993static inline bool msg_peer_node_is_up(struct tipc_msg *m)
994{
995 if (msg_peer_link_is_up(m))
996 return true;
997 return msg_redundant_link(m);
998}
999
1000static inline bool msg_is_reset(struct tipc_msg *hdr)
1001{
1002 return (msg_user(hdr) == LINK_PROTOCOL) && (msg_type(hdr) == RESET_MSG);
1003}
1004
1005static inline u32 msg_sugg_node_addr(struct tipc_msg *m)
1006{
1007 return msg_word(m, 14);
1008}
1009
1010static inline void msg_set_sugg_node_addr(struct tipc_msg *m, u32 n)
1011{
1012 msg_set_word(m, 14, n);
1013}
1014
1015static inline void msg_set_node_id(struct tipc_msg *hdr, u8 *id)
1016{
1017 memcpy(msg_data(hdr), id, 16);
1018}
1019
1020static inline u8 *msg_node_id(struct tipc_msg *hdr)
1021{
1022 return (u8 *)msg_data(hdr);
1023}
1024
1025struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp);
1026bool tipc_msg_validate(struct sk_buff **_skb);
1027bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err);
1028void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb,
1029 struct sk_buff_head *xmitq);
1030void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type,
1031 u32 hsize, u32 destnode);
1032struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
1033 uint data_sz, u32 dnode, u32 onode,
1034 u32 dport, u32 oport, int errcode);
1035int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf);
1036bool tipc_msg_bundle(struct sk_buff *skb, struct tipc_msg *msg, u32 mtu);
1037bool tipc_msg_make_bundle(struct sk_buff **skb, struct tipc_msg *msg,
1038 u32 mtu, u32 dnode);
1039bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos);
1040int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
1041 int offset, int dsz, int mtu, struct sk_buff_head *list);
1042bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err);
1043bool tipc_msg_assemble(struct sk_buff_head *list);
1044bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq);
1045bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg,
1046 struct sk_buff_head *cpy);
1047void __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno,
1048 struct sk_buff *skb);
1049bool tipc_msg_skb_clone(struct sk_buff_head *msg, struct sk_buff_head *cpy);
1050
1051static inline u16 buf_seqno(struct sk_buff *skb)
1052{
1053 return msg_seqno(buf_msg(skb));
1054}
1055
1056static inline int buf_roundup_len(struct sk_buff *skb)
1057{
1058 return (skb->len / 1024 + 1) * 1024;
1059}
1060
1061
1062
1063
1064
1065static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list,
1066 spinlock_t *lock)
1067{
1068 struct sk_buff *skb;
1069
1070 spin_lock_bh(lock);
1071 skb = skb_peek(list);
1072 if (skb)
1073 skb_get(skb);
1074 spin_unlock_bh(lock);
1075 return skb;
1076}
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter)
1087{
1088 struct sk_buff *skb;
1089 u32 dport = 0;
1090 bool ignore = true;
1091
1092 spin_lock_bh(&list->lock);
1093 skb_queue_walk(list, skb) {
1094 dport = msg_destport(buf_msg(skb));
1095 if (!filter || skb_queue_is_last(list, skb))
1096 break;
1097 if (dport == filter)
1098 ignore = false;
1099 else if (!ignore)
1100 break;
1101 }
1102 spin_unlock_bh(&list->lock);
1103 return dport;
1104}
1105
1106
1107
1108
1109
1110static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list,
1111 u32 dport)
1112{
1113 struct sk_buff *_skb, *tmp, *skb = NULL;
1114
1115 spin_lock_bh(&list->lock);
1116 skb_queue_walk_safe(list, _skb, tmp) {
1117 if (msg_destport(buf_msg(_skb)) == dport) {
1118 __skb_unlink(_skb, list);
1119 skb = _skb;
1120 break;
1121 }
1122 }
1123 spin_unlock_bh(&list->lock);
1124 return skb;
1125}
1126
1127
1128
1129
1130
1131static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list,
1132 struct sk_buff_head *head)
1133{
1134 spin_lock_bh(&head->lock);
1135 skb_queue_splice_tail(list, head);
1136 spin_unlock_bh(&head->lock);
1137}
1138
1139
1140
1141
1142
1143static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list,
1144 struct sk_buff_head *head)
1145{
1146 struct sk_buff_head tmp;
1147
1148 __skb_queue_head_init(&tmp);
1149
1150 spin_lock_bh(&list->lock);
1151 skb_queue_splice_tail_init(list, &tmp);
1152 spin_unlock_bh(&list->lock);
1153 tipc_skb_queue_splice_tail(&tmp, head);
1154}
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165static inline struct sk_buff *__tipc_skb_dequeue(struct sk_buff_head *list,
1166 u16 seqno)
1167{
1168 struct sk_buff *skb = skb_peek(list);
1169
1170 if (skb && less_eq(buf_seqno(skb), seqno)) {
1171 __skb_unlink(skb, list);
1172 return skb;
1173 }
1174 return NULL;
1175}
1176
1177#endif
1178