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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 MSG_CRYPTO 14
86#define SOCK_WAKEUP 14
87#define TOP_SRV 15
88
89
90
91
92#define SHORT_H_SIZE 24
93#define BASIC_H_SIZE 32
94#define NAMED_H_SIZE 40
95#define MCAST_H_SIZE 44
96#define GROUP_H_SIZE 44
97#define INT_H_SIZE 40
98#define MIN_H_SIZE 24
99#define MAX_H_SIZE 60
100
101#define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)
102#define FB_MTU 3744
103#define TIPC_MEDIA_INFO_OFFSET 5
104
105struct tipc_skb_cb {
106 union {
107 struct {
108 struct sk_buff *tail;
109 unsigned long nxt_retr;
110 unsigned long retr_stamp;
111 u32 bytes_read;
112 u32 orig_member;
113 u16 chain_imp;
114 u16 ackers;
115 u16 retr_cnt;
116 } __packed;
117#ifdef CONFIG_TIPC_CRYPTO
118 struct {
119 struct tipc_crypto *rx;
120 struct tipc_aead *last;
121 u8 recurs;
122 } tx_clone_ctx __packed;
123#endif
124 } __packed;
125 union {
126 struct {
127 u8 validated:1;
128#ifdef CONFIG_TIPC_CRYPTO
129 u8 encrypted:1;
130 u8 decrypted:1;
131#define SKB_PROBING 1
132#define SKB_GRACING 2
133 u8 xmit_type:2;
134 u8 tx_clone_deferred:1;
135#endif
136 };
137 u8 flags;
138 };
139 u8 reserved;
140#ifdef CONFIG_TIPC_CRYPTO
141 void *crypto_ctx;
142#endif
143} __packed;
144
145#define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0]))
146
147struct tipc_msg {
148 __be32 hdr[15];
149};
150
151
152
153
154
155
156
157
158
159struct tipc_gap_ack {
160 __be16 ack;
161 __be16 gap;
162};
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185struct tipc_gap_ack_blks {
186 __be16 len;
187 union {
188 u8 ugack_cnt;
189 u8 start_index;
190 };
191 u8 bgack_cnt;
192 struct tipc_gap_ack gacks[];
193};
194
195#define MAX_GAP_ACK_BLKS 128
196#define MAX_GAP_ACK_BLKS_SZ (sizeof(struct tipc_gap_ack_blks) + \
197 sizeof(struct tipc_gap_ack) * MAX_GAP_ACK_BLKS)
198
199static inline struct tipc_msg *buf_msg(struct sk_buff *skb)
200{
201 return (struct tipc_msg *)skb->data;
202}
203
204static inline u32 msg_word(struct tipc_msg *m, u32 pos)
205{
206 return ntohl(m->hdr[pos]);
207}
208
209static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
210{
211 m->hdr[w] = htonl(val);
212}
213
214static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
215{
216 return (msg_word(m, w) >> pos) & mask;
217}
218
219static inline void msg_set_bits(struct tipc_msg *m, u32 w,
220 u32 pos, u32 mask, u32 val)
221{
222 val = (val & mask) << pos;
223 mask = mask << pos;
224 m->hdr[w] &= ~htonl(mask);
225 m->hdr[w] |= htonl(val);
226}
227
228static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
229{
230 u32 temp = msg->hdr[a];
231
232 msg->hdr[a] = msg->hdr[b];
233 msg->hdr[b] = temp;
234}
235
236
237
238
239static inline u32 msg_version(struct tipc_msg *m)
240{
241 return msg_bits(m, 0, 29, 7);
242}
243
244static inline void msg_set_version(struct tipc_msg *m)
245{
246 msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
247}
248
249static inline u32 msg_user(struct tipc_msg *m)
250{
251 return msg_bits(m, 0, 25, 0xf);
252}
253
254static inline u32 msg_isdata(struct tipc_msg *m)
255{
256 return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
257}
258
259static inline void msg_set_user(struct tipc_msg *m, u32 n)
260{
261 msg_set_bits(m, 0, 25, 0xf, n);
262}
263
264static inline u32 msg_hdr_sz(struct tipc_msg *m)
265{
266 return msg_bits(m, 0, 21, 0xf) << 2;
267}
268
269static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
270{
271 msg_set_bits(m, 0, 21, 0xf, n>>2);
272}
273
274static inline u32 msg_size(struct tipc_msg *m)
275{
276 return msg_bits(m, 0, 0, 0x1ffff);
277}
278
279static inline u32 msg_blocks(struct tipc_msg *m)
280{
281 return (msg_size(m) / 1024) + 1;
282}
283
284static inline u32 msg_data_sz(struct tipc_msg *m)
285{
286 return msg_size(m) - msg_hdr_sz(m);
287}
288
289static inline int msg_non_seq(struct tipc_msg *m)
290{
291 return msg_bits(m, 0, 20, 1);
292}
293
294static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
295{
296 msg_set_bits(m, 0, 20, 1, n);
297}
298
299static inline int msg_is_syn(struct tipc_msg *m)
300{
301 return msg_bits(m, 0, 17, 1);
302}
303
304static inline void msg_set_syn(struct tipc_msg *m, u32 d)
305{
306 msg_set_bits(m, 0, 17, 1, d);
307}
308
309static inline int msg_dest_droppable(struct tipc_msg *m)
310{
311 return msg_bits(m, 0, 19, 1);
312}
313
314static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
315{
316 msg_set_bits(m, 0, 19, 1, d);
317}
318
319static inline int msg_is_keepalive(struct tipc_msg *m)
320{
321 return msg_bits(m, 0, 19, 1);
322}
323
324static inline void msg_set_is_keepalive(struct tipc_msg *m, u32 d)
325{
326 msg_set_bits(m, 0, 19, 1, d);
327}
328
329static inline int msg_src_droppable(struct tipc_msg *m)
330{
331 return msg_bits(m, 0, 18, 1);
332}
333
334static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
335{
336 msg_set_bits(m, 0, 18, 1, d);
337}
338
339static inline int msg_ack_required(struct tipc_msg *m)
340{
341 return msg_bits(m, 0, 18, 1);
342}
343
344static inline void msg_set_ack_required(struct tipc_msg *m)
345{
346 msg_set_bits(m, 0, 18, 1, 1);
347}
348
349static inline int msg_nagle_ack(struct tipc_msg *m)
350{
351 return msg_bits(m, 0, 18, 1);
352}
353
354static inline void msg_set_nagle_ack(struct tipc_msg *m)
355{
356 msg_set_bits(m, 0, 18, 1, 1);
357}
358
359static inline bool msg_is_rcast(struct tipc_msg *m)
360{
361 return msg_bits(m, 0, 18, 0x1);
362}
363
364static inline void msg_set_is_rcast(struct tipc_msg *m, bool d)
365{
366 msg_set_bits(m, 0, 18, 0x1, d);
367}
368
369static inline void msg_set_size(struct tipc_msg *m, u32 sz)
370{
371 m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
372}
373
374static inline unchar *msg_data(struct tipc_msg *m)
375{
376 return ((unchar *)m) + msg_hdr_sz(m);
377}
378
379static inline struct tipc_msg *msg_inner_hdr(struct tipc_msg *m)
380{
381 return (struct tipc_msg *)msg_data(m);
382}
383
384
385
386
387static inline u32 msg_type(struct tipc_msg *m)
388{
389 return msg_bits(m, 1, 29, 0x7);
390}
391
392static inline void msg_set_type(struct tipc_msg *m, u32 n)
393{
394 msg_set_bits(m, 1, 29, 0x7, n);
395}
396
397static inline int msg_in_group(struct tipc_msg *m)
398{
399 int mtyp = msg_type(m);
400
401 return mtyp >= TIPC_GRP_MEMBER_EVT && mtyp <= TIPC_GRP_UCAST_MSG;
402}
403
404static inline bool msg_is_grp_evt(struct tipc_msg *m)
405{
406 return msg_type(m) == TIPC_GRP_MEMBER_EVT;
407}
408
409static inline u32 msg_named(struct tipc_msg *m)
410{
411 return msg_type(m) == TIPC_NAMED_MSG;
412}
413
414static inline u32 msg_mcast(struct tipc_msg *m)
415{
416 int mtyp = msg_type(m);
417
418 return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) ||
419 (mtyp == TIPC_GRP_MCAST_MSG));
420}
421
422static inline u32 msg_connected(struct tipc_msg *m)
423{
424 return msg_type(m) == TIPC_CONN_MSG;
425}
426
427static inline u32 msg_direct(struct tipc_msg *m)
428{
429 return msg_type(m) == TIPC_DIRECT_MSG;
430}
431
432static inline u32 msg_errcode(struct tipc_msg *m)
433{
434 return msg_bits(m, 1, 25, 0xf);
435}
436
437static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
438{
439 msg_set_bits(m, 1, 25, 0xf, err);
440}
441
442static inline void msg_set_bulk(struct tipc_msg *m)
443{
444 msg_set_bits(m, 1, 28, 0x1, 1);
445}
446
447static inline u32 msg_is_bulk(struct tipc_msg *m)
448{
449 return msg_bits(m, 1, 28, 0x1);
450}
451
452static inline void msg_set_last_bulk(struct tipc_msg *m)
453{
454 msg_set_bits(m, 1, 27, 0x1, 1);
455}
456
457static inline u32 msg_is_last_bulk(struct tipc_msg *m)
458{
459 return msg_bits(m, 1, 27, 0x1);
460}
461
462static inline void msg_set_non_legacy(struct tipc_msg *m)
463{
464 msg_set_bits(m, 1, 26, 0x1, 1);
465}
466
467static inline u32 msg_is_legacy(struct tipc_msg *m)
468{
469 return !msg_bits(m, 1, 26, 0x1);
470}
471
472static inline u32 msg_reroute_cnt(struct tipc_msg *m)
473{
474 return msg_bits(m, 1, 21, 0xf);
475}
476
477static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
478{
479 msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
480}
481
482static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
483{
484 msg_set_bits(m, 1, 21, 0xf, 0);
485}
486
487static inline u32 msg_lookup_scope(struct tipc_msg *m)
488{
489 return msg_bits(m, 1, 19, 0x3);
490}
491
492static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
493{
494 msg_set_bits(m, 1, 19, 0x3, n);
495}
496
497static inline u16 msg_bcast_ack(struct tipc_msg *m)
498{
499 return msg_bits(m, 1, 0, 0xffff);
500}
501
502static inline void msg_set_bcast_ack(struct tipc_msg *m, u16 n)
503{
504 msg_set_bits(m, 1, 0, 0xffff, n);
505}
506
507
508
509
510static inline bool msg_dest_session_valid(struct tipc_msg *m)
511{
512 return msg_bits(m, 1, 16, 0x1);
513}
514
515static inline void msg_set_dest_session_valid(struct tipc_msg *m, bool valid)
516{
517 msg_set_bits(m, 1, 16, 0x1, valid);
518}
519
520static inline u16 msg_dest_session(struct tipc_msg *m)
521{
522 return msg_bits(m, 1, 0, 0xffff);
523}
524
525static inline void msg_set_dest_session(struct tipc_msg *m, u16 n)
526{
527 msg_set_bits(m, 1, 0, 0xffff, n);
528}
529
530
531
532
533static inline u16 msg_ack(struct tipc_msg *m)
534{
535 return msg_bits(m, 2, 16, 0xffff);
536}
537
538static inline void msg_set_ack(struct tipc_msg *m, u16 n)
539{
540 msg_set_bits(m, 2, 16, 0xffff, n);
541}
542
543static inline u16 msg_seqno(struct tipc_msg *m)
544{
545 return msg_bits(m, 2, 0, 0xffff);
546}
547
548static inline void msg_set_seqno(struct tipc_msg *m, u16 n)
549{
550 msg_set_bits(m, 2, 0, 0xffff, n);
551}
552
553
554
555
556static inline u32 msg_importance(struct tipc_msg *m)
557{
558 int usr = msg_user(m);
559
560 if (likely((usr <= TIPC_CRITICAL_IMPORTANCE) && !msg_errcode(m)))
561 return usr;
562 if ((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER))
563 return msg_bits(m, 9, 0, 0x7);
564 return TIPC_SYSTEM_IMPORTANCE;
565}
566
567static inline void msg_set_importance(struct tipc_msg *m, u32 i)
568{
569 int usr = msg_user(m);
570
571 if (likely((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER)))
572 msg_set_bits(m, 9, 0, 0x7, i);
573 else if (i < TIPC_SYSTEM_IMPORTANCE)
574 msg_set_user(m, i);
575 else
576 pr_warn("Trying to set illegal importance in message\n");
577}
578
579static inline u32 msg_prevnode(struct tipc_msg *m)
580{
581 return msg_word(m, 3);
582}
583
584static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
585{
586 msg_set_word(m, 3, a);
587}
588
589static inline u32 msg_origport(struct tipc_msg *m)
590{
591 if (msg_user(m) == MSG_FRAGMENTER)
592 m = msg_inner_hdr(m);
593 return msg_word(m, 4);
594}
595
596static inline void msg_set_origport(struct tipc_msg *m, u32 p)
597{
598 msg_set_word(m, 4, p);
599}
600
601static inline u16 msg_named_seqno(struct tipc_msg *m)
602{
603 return msg_bits(m, 4, 0, 0xffff);
604}
605
606static inline void msg_set_named_seqno(struct tipc_msg *m, u16 n)
607{
608 msg_set_bits(m, 4, 0, 0xffff, n);
609}
610
611static inline u32 msg_destport(struct tipc_msg *m)
612{
613 return msg_word(m, 5);
614}
615
616static inline void msg_set_destport(struct tipc_msg *m, u32 p)
617{
618 msg_set_word(m, 5, p);
619}
620
621static inline u32 msg_mc_netid(struct tipc_msg *m)
622{
623 return msg_word(m, 5);
624}
625
626static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
627{
628 msg_set_word(m, 5, p);
629}
630
631static inline int msg_short(struct tipc_msg *m)
632{
633 return msg_hdr_sz(m) == SHORT_H_SIZE;
634}
635
636static inline u32 msg_orignode(struct tipc_msg *m)
637{
638 if (likely(msg_short(m)))
639 return msg_prevnode(m);
640 return msg_word(m, 6);
641}
642
643static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
644{
645 msg_set_word(m, 6, a);
646}
647
648static inline u32 msg_destnode(struct tipc_msg *m)
649{
650 return msg_word(m, 7);
651}
652
653static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
654{
655 msg_set_word(m, 7, a);
656}
657
658static inline u32 msg_nametype(struct tipc_msg *m)
659{
660 return msg_word(m, 8);
661}
662
663static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
664{
665 msg_set_word(m, 8, n);
666}
667
668static inline u32 msg_nameinst(struct tipc_msg *m)
669{
670 return msg_word(m, 9);
671}
672
673static inline u32 msg_namelower(struct tipc_msg *m)
674{
675 return msg_nameinst(m);
676}
677
678static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
679{
680 msg_set_word(m, 9, n);
681}
682
683static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
684{
685 msg_set_namelower(m, n);
686}
687
688static inline u32 msg_nameupper(struct tipc_msg *m)
689{
690 return msg_word(m, 10);
691}
692
693static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
694{
695 msg_set_word(m, 10, n);
696}
697
698
699
700
701
702
703
704
705#define CONN_PROBE 0
706#define CONN_PROBE_REPLY 1
707#define CONN_ACK 2
708
709
710
711
712#define PUBLICATION 0
713#define WITHDRAWAL 1
714
715
716
717
718#define FIRST_FRAGMENT 0
719#define FRAGMENT 1
720#define LAST_FRAGMENT 2
721
722
723
724
725#define STATE_MSG 0
726#define RESET_MSG 1
727#define ACTIVATE_MSG 2
728
729
730
731
732#define SYNCH_MSG 0
733#define FAILOVER_MSG 1
734
735
736
737
738#define DSC_REQ_MSG 0
739#define DSC_RESP_MSG 1
740#define DSC_TRIAL_MSG 2
741#define DSC_TRIAL_FAIL_MSG 3
742
743
744
745
746#define GRP_JOIN_MSG 0
747#define GRP_LEAVE_MSG 1
748#define GRP_ADV_MSG 2
749#define GRP_ACK_MSG 3
750#define GRP_RECLAIM_MSG 4
751#define GRP_REMIT_MSG 5
752
753
754#define KEY_DISTR_MSG 0
755
756
757
758
759static inline u32 msg_seq_gap(struct tipc_msg *m)
760{
761 return msg_bits(m, 1, 16, 0x1fff);
762}
763
764static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
765{
766 msg_set_bits(m, 1, 16, 0x1fff, n);
767}
768
769static inline u32 msg_node_sig(struct tipc_msg *m)
770{
771 return msg_bits(m, 1, 0, 0xffff);
772}
773
774static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
775{
776 msg_set_bits(m, 1, 0, 0xffff, n);
777}
778
779static inline u32 msg_node_capabilities(struct tipc_msg *m)
780{
781 return msg_bits(m, 1, 15, 0x1fff);
782}
783
784static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n)
785{
786 msg_set_bits(m, 1, 15, 0x1fff, n);
787}
788
789
790
791
792static inline u32 msg_dest_domain(struct tipc_msg *m)
793{
794 return msg_word(m, 2);
795}
796
797static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
798{
799 msg_set_word(m, 2, n);
800}
801
802static inline u32 msg_bcgap_after(struct tipc_msg *m)
803{
804 return msg_bits(m, 2, 16, 0xffff);
805}
806
807static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
808{
809 msg_set_bits(m, 2, 16, 0xffff, n);
810}
811
812static inline u32 msg_bcgap_to(struct tipc_msg *m)
813{
814 return msg_bits(m, 2, 0, 0xffff);
815}
816
817static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
818{
819 msg_set_bits(m, 2, 0, 0xffff, n);
820}
821
822
823
824
825static inline u32 msg_last_bcast(struct tipc_msg *m)
826{
827 return msg_bits(m, 4, 16, 0xffff);
828}
829
830static inline u32 msg_bc_snd_nxt(struct tipc_msg *m)
831{
832 return msg_last_bcast(m) + 1;
833}
834
835static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
836{
837 msg_set_bits(m, 4, 16, 0xffff, n);
838}
839
840static inline u32 msg_nof_fragms(struct tipc_msg *m)
841{
842 return msg_bits(m, 4, 0, 0xffff);
843}
844
845static inline void msg_set_nof_fragms(struct tipc_msg *m, u32 n)
846{
847 msg_set_bits(m, 4, 0, 0xffff, n);
848}
849
850static inline u32 msg_fragm_no(struct tipc_msg *m)
851{
852 return msg_bits(m, 4, 16, 0xffff);
853}
854
855static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
856{
857 msg_set_bits(m, 4, 16, 0xffff, n);
858}
859
860static inline u16 msg_next_sent(struct tipc_msg *m)
861{
862 return msg_bits(m, 4, 0, 0xffff);
863}
864
865static inline void msg_set_next_sent(struct tipc_msg *m, u16 n)
866{
867 msg_set_bits(m, 4, 0, 0xffff, n);
868}
869
870static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
871{
872 msg_set_bits(m, 4, 0, 0xffff, n);
873}
874
875static inline u32 msg_bc_netid(struct tipc_msg *m)
876{
877 return msg_word(m, 4);
878}
879
880static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
881{
882 msg_set_word(m, 4, id);
883}
884
885static inline u32 msg_link_selector(struct tipc_msg *m)
886{
887 if (msg_user(m) == MSG_FRAGMENTER)
888 m = (void *)msg_data(m);
889 return msg_bits(m, 4, 0, 1);
890}
891
892
893
894
895static inline u16 msg_session(struct tipc_msg *m)
896{
897 return msg_bits(m, 5, 16, 0xffff);
898}
899
900static inline void msg_set_session(struct tipc_msg *m, u16 n)
901{
902 msg_set_bits(m, 5, 16, 0xffff, n);
903}
904
905static inline u32 msg_probe(struct tipc_msg *m)
906{
907 return msg_bits(m, 5, 0, 1);
908}
909
910static inline void msg_set_probe(struct tipc_msg *m, u32 val)
911{
912 msg_set_bits(m, 5, 0, 1, val);
913}
914
915static inline char msg_net_plane(struct tipc_msg *m)
916{
917 return msg_bits(m, 5, 1, 7) + 'A';
918}
919
920static inline void msg_set_net_plane(struct tipc_msg *m, char n)
921{
922 msg_set_bits(m, 5, 1, 7, (n - 'A'));
923}
924
925static inline u32 msg_linkprio(struct tipc_msg *m)
926{
927 return msg_bits(m, 5, 4, 0x1f);
928}
929
930static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
931{
932 msg_set_bits(m, 5, 4, 0x1f, n);
933}
934
935static inline u32 msg_bearer_id(struct tipc_msg *m)
936{
937 return msg_bits(m, 5, 9, 0x7);
938}
939
940static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
941{
942 msg_set_bits(m, 5, 9, 0x7, n);
943}
944
945static inline u32 msg_redundant_link(struct tipc_msg *m)
946{
947 return msg_bits(m, 5, 12, 0x1);
948}
949
950static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
951{
952 msg_set_bits(m, 5, 12, 0x1, r);
953}
954
955static inline u32 msg_peer_stopping(struct tipc_msg *m)
956{
957 return msg_bits(m, 5, 13, 0x1);
958}
959
960static inline void msg_set_peer_stopping(struct tipc_msg *m, u32 s)
961{
962 msg_set_bits(m, 5, 13, 0x1, s);
963}
964
965static inline bool msg_bc_ack_invalid(struct tipc_msg *m)
966{
967 switch (msg_user(m)) {
968 case BCAST_PROTOCOL:
969 case NAME_DISTRIBUTOR:
970 case LINK_PROTOCOL:
971 return msg_bits(m, 5, 14, 0x1);
972 default:
973 return false;
974 }
975}
976
977static inline void msg_set_bc_ack_invalid(struct tipc_msg *m, bool invalid)
978{
979 msg_set_bits(m, 5, 14, 0x1, invalid);
980}
981
982static inline char *msg_media_addr(struct tipc_msg *m)
983{
984 return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET];
985}
986
987static inline u32 msg_bc_gap(struct tipc_msg *m)
988{
989 return msg_bits(m, 8, 0, 0x3ff);
990}
991
992static inline void msg_set_bc_gap(struct tipc_msg *m, u32 n)
993{
994 msg_set_bits(m, 8, 0, 0x3ff, n);
995}
996
997
998
999
1000static inline u16 msg_msgcnt(struct tipc_msg *m)
1001{
1002 return msg_bits(m, 9, 16, 0xffff);
1003}
1004
1005static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n)
1006{
1007 msg_set_bits(m, 9, 16, 0xffff, n);
1008}
1009
1010static inline u16 msg_syncpt(struct tipc_msg *m)
1011{
1012 return msg_bits(m, 9, 16, 0xffff);
1013}
1014
1015static inline void msg_set_syncpt(struct tipc_msg *m, u16 n)
1016{
1017 msg_set_bits(m, 9, 16, 0xffff, n);
1018}
1019
1020static inline u32 msg_conn_ack(struct tipc_msg *m)
1021{
1022 return msg_bits(m, 9, 16, 0xffff);
1023}
1024
1025static inline void msg_set_conn_ack(struct tipc_msg *m, u32 n)
1026{
1027 msg_set_bits(m, 9, 16, 0xffff, n);
1028}
1029
1030static inline u16 msg_adv_win(struct tipc_msg *m)
1031{
1032 return msg_bits(m, 9, 0, 0xffff);
1033}
1034
1035static inline void msg_set_adv_win(struct tipc_msg *m, u16 n)
1036{
1037 msg_set_bits(m, 9, 0, 0xffff, n);
1038}
1039
1040static inline u32 msg_max_pkt(struct tipc_msg *m)
1041{
1042 return msg_bits(m, 9, 16, 0xffff) * 4;
1043}
1044
1045static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
1046{
1047 msg_set_bits(m, 9, 16, 0xffff, (n / 4));
1048}
1049
1050static inline u32 msg_link_tolerance(struct tipc_msg *m)
1051{
1052 return msg_bits(m, 9, 0, 0xffff);
1053}
1054
1055static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
1056{
1057 msg_set_bits(m, 9, 0, 0xffff, n);
1058}
1059
1060static inline u16 msg_grp_bc_syncpt(struct tipc_msg *m)
1061{
1062 return msg_bits(m, 9, 16, 0xffff);
1063}
1064
1065static inline void msg_set_grp_bc_syncpt(struct tipc_msg *m, u16 n)
1066{
1067 msg_set_bits(m, 9, 16, 0xffff, n);
1068}
1069
1070static inline u16 msg_grp_bc_acked(struct tipc_msg *m)
1071{
1072 return msg_bits(m, 9, 16, 0xffff);
1073}
1074
1075static inline void msg_set_grp_bc_acked(struct tipc_msg *m, u16 n)
1076{
1077 msg_set_bits(m, 9, 16, 0xffff, n);
1078}
1079
1080static inline u16 msg_grp_remitted(struct tipc_msg *m)
1081{
1082 return msg_bits(m, 9, 16, 0xffff);
1083}
1084
1085static inline void msg_set_grp_remitted(struct tipc_msg *m, u16 n)
1086{
1087 msg_set_bits(m, 9, 16, 0xffff, n);
1088}
1089
1090
1091
1092static inline u16 msg_grp_evt(struct tipc_msg *m)
1093{
1094 return msg_bits(m, 10, 0, 0x3);
1095}
1096
1097static inline void msg_set_grp_evt(struct tipc_msg *m, int n)
1098{
1099 msg_set_bits(m, 10, 0, 0x3, n);
1100}
1101
1102static inline u16 msg_grp_bc_ack_req(struct tipc_msg *m)
1103{
1104 return msg_bits(m, 10, 0, 0x1);
1105}
1106
1107static inline void msg_set_grp_bc_ack_req(struct tipc_msg *m, bool n)
1108{
1109 msg_set_bits(m, 10, 0, 0x1, n);
1110}
1111
1112static inline u16 msg_grp_bc_seqno(struct tipc_msg *m)
1113{
1114 return msg_bits(m, 10, 16, 0xffff);
1115}
1116
1117static inline void msg_set_grp_bc_seqno(struct tipc_msg *m, u32 n)
1118{
1119 msg_set_bits(m, 10, 16, 0xffff, n);
1120}
1121
1122static inline bool msg_peer_link_is_up(struct tipc_msg *m)
1123{
1124 if (likely(msg_user(m) != LINK_PROTOCOL))
1125 return true;
1126 if (msg_type(m) == STATE_MSG)
1127 return true;
1128 return false;
1129}
1130
1131static inline bool msg_peer_node_is_up(struct tipc_msg *m)
1132{
1133 if (msg_peer_link_is_up(m))
1134 return true;
1135 return msg_redundant_link(m);
1136}
1137
1138static inline bool msg_is_reset(struct tipc_msg *hdr)
1139{
1140 return (msg_user(hdr) == LINK_PROTOCOL) && (msg_type(hdr) == RESET_MSG);
1141}
1142
1143
1144
1145static inline void msg_set_peer_net_hash(struct tipc_msg *m, u32 n)
1146{
1147 msg_set_word(m, 13, n);
1148}
1149
1150static inline u32 msg_peer_net_hash(struct tipc_msg *m)
1151{
1152 return msg_word(m, 13);
1153}
1154
1155
1156
1157static inline u32 msg_sugg_node_addr(struct tipc_msg *m)
1158{
1159 return msg_word(m, 14);
1160}
1161
1162static inline void msg_set_sugg_node_addr(struct tipc_msg *m, u32 n)
1163{
1164 msg_set_word(m, 14, n);
1165}
1166
1167static inline void msg_set_node_id(struct tipc_msg *hdr, u8 *id)
1168{
1169 memcpy(msg_data(hdr), id, 16);
1170}
1171
1172static inline u8 *msg_node_id(struct tipc_msg *hdr)
1173{
1174 return (u8 *)msg_data(hdr);
1175}
1176
1177struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp);
1178bool tipc_msg_validate(struct sk_buff **_skb);
1179bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err);
1180void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb,
1181 struct sk_buff_head *xmitq);
1182void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type,
1183 u32 hsize, u32 destnode);
1184struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
1185 uint data_sz, u32 dnode, u32 onode,
1186 u32 dport, u32 oport, int errcode);
1187int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf);
1188bool tipc_msg_try_bundle(struct sk_buff *tskb, struct sk_buff **skb, u32 mss,
1189 u32 dnode, bool *new_bundle);
1190bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos);
1191int tipc_msg_fragment(struct sk_buff *skb, const struct tipc_msg *hdr,
1192 int pktmax, struct sk_buff_head *frags);
1193int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
1194 int offset, int dsz, int mtu, struct sk_buff_head *list);
1195int tipc_msg_append(struct tipc_msg *hdr, struct msghdr *m, int dlen,
1196 int mss, struct sk_buff_head *txq);
1197bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err);
1198bool tipc_msg_assemble(struct sk_buff_head *list);
1199bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq);
1200bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg,
1201 struct sk_buff_head *cpy);
1202bool __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno,
1203 struct sk_buff *skb);
1204bool tipc_msg_skb_clone(struct sk_buff_head *msg, struct sk_buff_head *cpy);
1205
1206static inline u16 buf_seqno(struct sk_buff *skb)
1207{
1208 return msg_seqno(buf_msg(skb));
1209}
1210
1211static inline int buf_roundup_len(struct sk_buff *skb)
1212{
1213 return (skb->len / 1024 + 1) * 1024;
1214}
1215
1216
1217
1218
1219
1220static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list,
1221 spinlock_t *lock)
1222{
1223 struct sk_buff *skb;
1224
1225 spin_lock_bh(lock);
1226 skb = skb_peek(list);
1227 if (skb)
1228 skb_get(skb);
1229 spin_unlock_bh(lock);
1230 return skb;
1231}
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter)
1242{
1243 struct sk_buff *skb;
1244 u32 dport = 0;
1245 bool ignore = true;
1246
1247 spin_lock_bh(&list->lock);
1248 skb_queue_walk(list, skb) {
1249 dport = msg_destport(buf_msg(skb));
1250 if (!filter || skb_queue_is_last(list, skb))
1251 break;
1252 if (dport == filter)
1253 ignore = false;
1254 else if (!ignore)
1255 break;
1256 }
1257 spin_unlock_bh(&list->lock);
1258 return dport;
1259}
1260
1261
1262
1263
1264
1265static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list,
1266 u32 dport)
1267{
1268 struct sk_buff *_skb, *tmp, *skb = NULL;
1269
1270 spin_lock_bh(&list->lock);
1271 skb_queue_walk_safe(list, _skb, tmp) {
1272 if (msg_destport(buf_msg(_skb)) == dport) {
1273 __skb_unlink(_skb, list);
1274 skb = _skb;
1275 break;
1276 }
1277 }
1278 spin_unlock_bh(&list->lock);
1279 return skb;
1280}
1281
1282
1283
1284
1285
1286static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list,
1287 struct sk_buff_head *head)
1288{
1289 spin_lock_bh(&head->lock);
1290 skb_queue_splice_tail(list, head);
1291 spin_unlock_bh(&head->lock);
1292}
1293
1294
1295
1296
1297
1298static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list,
1299 struct sk_buff_head *head)
1300{
1301 struct sk_buff_head tmp;
1302
1303 __skb_queue_head_init(&tmp);
1304
1305 spin_lock_bh(&list->lock);
1306 skb_queue_splice_tail_init(list, &tmp);
1307 spin_unlock_bh(&list->lock);
1308 tipc_skb_queue_splice_tail(&tmp, head);
1309}
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320static inline struct sk_buff *__tipc_skb_dequeue(struct sk_buff_head *list,
1321 u16 seqno)
1322{
1323 struct sk_buff *skb = skb_peek(list);
1324
1325 if (skb && less_eq(buf_seqno(skb), seqno)) {
1326 __skb_unlink(skb, list);
1327 return skb;
1328 }
1329 return NULL;
1330}
1331
1332#endif
1333