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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 TIPC_MEDIA_INFO_OFFSET 5
103
104extern const int one_page_mtu;
105
106struct tipc_skb_cb {
107 union {
108 struct {
109 struct sk_buff *tail;
110 unsigned long nxt_retr;
111 unsigned long retr_stamp;
112 u32 bytes_read;
113 u32 orig_member;
114 u16 chain_imp;
115 u16 ackers;
116 u16 retr_cnt;
117 } __packed;
118#ifdef CONFIG_TIPC_CRYPTO
119 struct {
120 struct tipc_crypto *rx;
121 struct tipc_aead *last;
122 u8 recurs;
123 } tx_clone_ctx __packed;
124#endif
125 } __packed;
126 union {
127 struct {
128 u8 validated:1;
129#ifdef CONFIG_TIPC_CRYPTO
130 u8 encrypted:1;
131 u8 decrypted:1;
132#define SKB_PROBING 1
133#define SKB_GRACING 2
134 u8 xmit_type:2;
135 u8 tx_clone_deferred:1;
136#endif
137 };
138 u8 flags;
139 };
140 u8 reserved;
141#ifdef CONFIG_TIPC_CRYPTO
142 void *crypto_ctx;
143#endif
144} __packed;
145
146#define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0]))
147
148struct tipc_msg {
149 __be32 hdr[15];
150};
151
152
153
154
155
156
157
158
159
160struct tipc_gap_ack {
161 __be16 ack;
162 __be16 gap;
163};
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186struct tipc_gap_ack_blks {
187 __be16 len;
188 union {
189 u8 ugack_cnt;
190 u8 start_index;
191 };
192 u8 bgack_cnt;
193 struct tipc_gap_ack gacks[];
194};
195
196#define tipc_gap_ack_blks_sz(n) (sizeof(struct tipc_gap_ack_blks) + \
197 sizeof(struct tipc_gap_ack) * (n))
198
199#define MAX_GAP_ACK_BLKS 128
200#define MAX_GAP_ACK_BLKS_SZ tipc_gap_ack_blks_sz(MAX_GAP_ACK_BLKS)
201
202static inline struct tipc_msg *buf_msg(struct sk_buff *skb)
203{
204 return (struct tipc_msg *)skb->data;
205}
206
207static inline u32 msg_word(struct tipc_msg *m, u32 pos)
208{
209 return ntohl(m->hdr[pos]);
210}
211
212static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
213{
214 m->hdr[w] = htonl(val);
215}
216
217static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
218{
219 return (msg_word(m, w) >> pos) & mask;
220}
221
222static inline void msg_set_bits(struct tipc_msg *m, u32 w,
223 u32 pos, u32 mask, u32 val)
224{
225 val = (val & mask) << pos;
226 mask = mask << pos;
227 m->hdr[w] &= ~htonl(mask);
228 m->hdr[w] |= htonl(val);
229}
230
231static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b)
232{
233 u32 temp = msg->hdr[a];
234
235 msg->hdr[a] = msg->hdr[b];
236 msg->hdr[b] = temp;
237}
238
239
240
241
242static inline u32 msg_version(struct tipc_msg *m)
243{
244 return msg_bits(m, 0, 29, 7);
245}
246
247static inline void msg_set_version(struct tipc_msg *m)
248{
249 msg_set_bits(m, 0, 29, 7, TIPC_VERSION);
250}
251
252static inline u32 msg_user(struct tipc_msg *m)
253{
254 return msg_bits(m, 0, 25, 0xf);
255}
256
257static inline u32 msg_isdata(struct tipc_msg *m)
258{
259 return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE;
260}
261
262static inline void msg_set_user(struct tipc_msg *m, u32 n)
263{
264 msg_set_bits(m, 0, 25, 0xf, n);
265}
266
267static inline u32 msg_hdr_sz(struct tipc_msg *m)
268{
269 return msg_bits(m, 0, 21, 0xf) << 2;
270}
271
272static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n)
273{
274 msg_set_bits(m, 0, 21, 0xf, n>>2);
275}
276
277static inline u32 msg_size(struct tipc_msg *m)
278{
279 return msg_bits(m, 0, 0, 0x1ffff);
280}
281
282static inline u32 msg_blocks(struct tipc_msg *m)
283{
284 return (msg_size(m) / 1024) + 1;
285}
286
287static inline u32 msg_data_sz(struct tipc_msg *m)
288{
289 return msg_size(m) - msg_hdr_sz(m);
290}
291
292static inline int msg_non_seq(struct tipc_msg *m)
293{
294 return msg_bits(m, 0, 20, 1);
295}
296
297static inline void msg_set_non_seq(struct tipc_msg *m, u32 n)
298{
299 msg_set_bits(m, 0, 20, 1, n);
300}
301
302static inline int msg_is_syn(struct tipc_msg *m)
303{
304 return msg_bits(m, 0, 17, 1);
305}
306
307static inline void msg_set_syn(struct tipc_msg *m, u32 d)
308{
309 msg_set_bits(m, 0, 17, 1, d);
310}
311
312static inline int msg_dest_droppable(struct tipc_msg *m)
313{
314 return msg_bits(m, 0, 19, 1);
315}
316
317static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d)
318{
319 msg_set_bits(m, 0, 19, 1, d);
320}
321
322static inline int msg_is_keepalive(struct tipc_msg *m)
323{
324 return msg_bits(m, 0, 19, 1);
325}
326
327static inline void msg_set_is_keepalive(struct tipc_msg *m, u32 d)
328{
329 msg_set_bits(m, 0, 19, 1, d);
330}
331
332static inline int msg_src_droppable(struct tipc_msg *m)
333{
334 return msg_bits(m, 0, 18, 1);
335}
336
337static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d)
338{
339 msg_set_bits(m, 0, 18, 1, d);
340}
341
342static inline int msg_ack_required(struct tipc_msg *m)
343{
344 return msg_bits(m, 0, 18, 1);
345}
346
347static inline void msg_set_ack_required(struct tipc_msg *m)
348{
349 msg_set_bits(m, 0, 18, 1, 1);
350}
351
352static inline int msg_nagle_ack(struct tipc_msg *m)
353{
354 return msg_bits(m, 0, 18, 1);
355}
356
357static inline void msg_set_nagle_ack(struct tipc_msg *m)
358{
359 msg_set_bits(m, 0, 18, 1, 1);
360}
361
362static inline bool msg_is_rcast(struct tipc_msg *m)
363{
364 return msg_bits(m, 0, 18, 0x1);
365}
366
367static inline void msg_set_is_rcast(struct tipc_msg *m, bool d)
368{
369 msg_set_bits(m, 0, 18, 0x1, d);
370}
371
372static inline void msg_set_size(struct tipc_msg *m, u32 sz)
373{
374 m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz);
375}
376
377static inline unchar *msg_data(struct tipc_msg *m)
378{
379 return ((unchar *)m) + msg_hdr_sz(m);
380}
381
382static inline struct tipc_msg *msg_inner_hdr(struct tipc_msg *m)
383{
384 return (struct tipc_msg *)msg_data(m);
385}
386
387
388
389
390static inline u32 msg_type(struct tipc_msg *m)
391{
392 return msg_bits(m, 1, 29, 0x7);
393}
394
395static inline void msg_set_type(struct tipc_msg *m, u32 n)
396{
397 msg_set_bits(m, 1, 29, 0x7, n);
398}
399
400static inline int msg_in_group(struct tipc_msg *m)
401{
402 int mtyp = msg_type(m);
403
404 return mtyp >= TIPC_GRP_MEMBER_EVT && mtyp <= TIPC_GRP_UCAST_MSG;
405}
406
407static inline bool msg_is_grp_evt(struct tipc_msg *m)
408{
409 return msg_type(m) == TIPC_GRP_MEMBER_EVT;
410}
411
412static inline u32 msg_named(struct tipc_msg *m)
413{
414 return msg_type(m) == TIPC_NAMED_MSG;
415}
416
417static inline u32 msg_mcast(struct tipc_msg *m)
418{
419 int mtyp = msg_type(m);
420
421 return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) ||
422 (mtyp == TIPC_GRP_MCAST_MSG));
423}
424
425static inline u32 msg_connected(struct tipc_msg *m)
426{
427 return msg_type(m) == TIPC_CONN_MSG;
428}
429
430static inline u32 msg_direct(struct tipc_msg *m)
431{
432 return msg_type(m) == TIPC_DIRECT_MSG;
433}
434
435static inline u32 msg_errcode(struct tipc_msg *m)
436{
437 return msg_bits(m, 1, 25, 0xf);
438}
439
440static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
441{
442 msg_set_bits(m, 1, 25, 0xf, err);
443}
444
445static inline void msg_set_bulk(struct tipc_msg *m)
446{
447 msg_set_bits(m, 1, 28, 0x1, 1);
448}
449
450static inline u32 msg_is_bulk(struct tipc_msg *m)
451{
452 return msg_bits(m, 1, 28, 0x1);
453}
454
455static inline void msg_set_last_bulk(struct tipc_msg *m)
456{
457 msg_set_bits(m, 1, 27, 0x1, 1);
458}
459
460static inline u32 msg_is_last_bulk(struct tipc_msg *m)
461{
462 return msg_bits(m, 1, 27, 0x1);
463}
464
465static inline void msg_set_non_legacy(struct tipc_msg *m)
466{
467 msg_set_bits(m, 1, 26, 0x1, 1);
468}
469
470static inline u32 msg_is_legacy(struct tipc_msg *m)
471{
472 return !msg_bits(m, 1, 26, 0x1);
473}
474
475static inline u32 msg_reroute_cnt(struct tipc_msg *m)
476{
477 return msg_bits(m, 1, 21, 0xf);
478}
479
480static inline void msg_incr_reroute_cnt(struct tipc_msg *m)
481{
482 msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1);
483}
484
485static inline void msg_reset_reroute_cnt(struct tipc_msg *m)
486{
487 msg_set_bits(m, 1, 21, 0xf, 0);
488}
489
490static inline u32 msg_lookup_scope(struct tipc_msg *m)
491{
492 return msg_bits(m, 1, 19, 0x3);
493}
494
495static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n)
496{
497 msg_set_bits(m, 1, 19, 0x3, n);
498}
499
500static inline u16 msg_bcast_ack(struct tipc_msg *m)
501{
502 return msg_bits(m, 1, 0, 0xffff);
503}
504
505static inline void msg_set_bcast_ack(struct tipc_msg *m, u16 n)
506{
507 msg_set_bits(m, 1, 0, 0xffff, n);
508}
509
510
511
512
513static inline bool msg_dest_session_valid(struct tipc_msg *m)
514{
515 return msg_bits(m, 1, 16, 0x1);
516}
517
518static inline void msg_set_dest_session_valid(struct tipc_msg *m, bool valid)
519{
520 msg_set_bits(m, 1, 16, 0x1, valid);
521}
522
523static inline u16 msg_dest_session(struct tipc_msg *m)
524{
525 return msg_bits(m, 1, 0, 0xffff);
526}
527
528static inline void msg_set_dest_session(struct tipc_msg *m, u16 n)
529{
530 msg_set_bits(m, 1, 0, 0xffff, n);
531}
532
533
534
535
536static inline u16 msg_ack(struct tipc_msg *m)
537{
538 return msg_bits(m, 2, 16, 0xffff);
539}
540
541static inline void msg_set_ack(struct tipc_msg *m, u16 n)
542{
543 msg_set_bits(m, 2, 16, 0xffff, n);
544}
545
546static inline u16 msg_seqno(struct tipc_msg *m)
547{
548 return msg_bits(m, 2, 0, 0xffff);
549}
550
551static inline void msg_set_seqno(struct tipc_msg *m, u16 n)
552{
553 msg_set_bits(m, 2, 0, 0xffff, n);
554}
555
556
557
558
559static inline u32 msg_importance(struct tipc_msg *m)
560{
561 int usr = msg_user(m);
562
563 if (likely((usr <= TIPC_CRITICAL_IMPORTANCE) && !msg_errcode(m)))
564 return usr;
565 if ((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER))
566 return msg_bits(m, 9, 0, 0x7);
567 return TIPC_SYSTEM_IMPORTANCE;
568}
569
570static inline void msg_set_importance(struct tipc_msg *m, u32 i)
571{
572 int usr = msg_user(m);
573
574 if (likely((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER)))
575 msg_set_bits(m, 9, 0, 0x7, i);
576 else if (i < TIPC_SYSTEM_IMPORTANCE)
577 msg_set_user(m, i);
578 else
579 pr_warn("Trying to set illegal importance in message\n");
580}
581
582static inline u32 msg_prevnode(struct tipc_msg *m)
583{
584 return msg_word(m, 3);
585}
586
587static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
588{
589 msg_set_word(m, 3, a);
590}
591
592static inline u32 msg_origport(struct tipc_msg *m)
593{
594 if (msg_user(m) == MSG_FRAGMENTER)
595 m = msg_inner_hdr(m);
596 return msg_word(m, 4);
597}
598
599static inline void msg_set_origport(struct tipc_msg *m, u32 p)
600{
601 msg_set_word(m, 4, p);
602}
603
604static inline u16 msg_named_seqno(struct tipc_msg *m)
605{
606 return msg_bits(m, 4, 0, 0xffff);
607}
608
609static inline void msg_set_named_seqno(struct tipc_msg *m, u16 n)
610{
611 msg_set_bits(m, 4, 0, 0xffff, n);
612}
613
614static inline u32 msg_destport(struct tipc_msg *m)
615{
616 return msg_word(m, 5);
617}
618
619static inline void msg_set_destport(struct tipc_msg *m, u32 p)
620{
621 msg_set_word(m, 5, p);
622}
623
624static inline u32 msg_mc_netid(struct tipc_msg *m)
625{
626 return msg_word(m, 5);
627}
628
629static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
630{
631 msg_set_word(m, 5, p);
632}
633
634static inline int msg_short(struct tipc_msg *m)
635{
636 return msg_hdr_sz(m) == SHORT_H_SIZE;
637}
638
639static inline u32 msg_orignode(struct tipc_msg *m)
640{
641 if (likely(msg_short(m)))
642 return msg_prevnode(m);
643 return msg_word(m, 6);
644}
645
646static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
647{
648 msg_set_word(m, 6, a);
649}
650
651static inline u32 msg_destnode(struct tipc_msg *m)
652{
653 return msg_word(m, 7);
654}
655
656static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
657{
658 msg_set_word(m, 7, a);
659}
660
661static inline u32 msg_nametype(struct tipc_msg *m)
662{
663 return msg_word(m, 8);
664}
665
666static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
667{
668 msg_set_word(m, 8, n);
669}
670
671static inline u32 msg_nameinst(struct tipc_msg *m)
672{
673 return msg_word(m, 9);
674}
675
676static inline u32 msg_namelower(struct tipc_msg *m)
677{
678 return msg_nameinst(m);
679}
680
681static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
682{
683 msg_set_word(m, 9, n);
684}
685
686static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
687{
688 msg_set_namelower(m, n);
689}
690
691static inline u32 msg_nameupper(struct tipc_msg *m)
692{
693 return msg_word(m, 10);
694}
695
696static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
697{
698 msg_set_word(m, 10, n);
699}
700
701
702
703
704
705
706
707
708#define CONN_PROBE 0
709#define CONN_PROBE_REPLY 1
710#define CONN_ACK 2
711
712
713
714
715#define PUBLICATION 0
716#define WITHDRAWAL 1
717
718
719
720
721#define FIRST_FRAGMENT 0
722#define FRAGMENT 1
723#define LAST_FRAGMENT 2
724
725
726
727
728#define STATE_MSG 0
729#define RESET_MSG 1
730#define ACTIVATE_MSG 2
731
732
733
734
735#define SYNCH_MSG 0
736#define FAILOVER_MSG 1
737
738
739
740
741#define DSC_REQ_MSG 0
742#define DSC_RESP_MSG 1
743#define DSC_TRIAL_MSG 2
744#define DSC_TRIAL_FAIL_MSG 3
745
746
747
748
749#define GRP_JOIN_MSG 0
750#define GRP_LEAVE_MSG 1
751#define GRP_ADV_MSG 2
752#define GRP_ACK_MSG 3
753#define GRP_RECLAIM_MSG 4
754#define GRP_REMIT_MSG 5
755
756
757#define KEY_DISTR_MSG 0
758
759
760
761
762static inline u32 msg_seq_gap(struct tipc_msg *m)
763{
764 return msg_bits(m, 1, 16, 0x1fff);
765}
766
767static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n)
768{
769 msg_set_bits(m, 1, 16, 0x1fff, n);
770}
771
772static inline u32 msg_node_sig(struct tipc_msg *m)
773{
774 return msg_bits(m, 1, 0, 0xffff);
775}
776
777static inline void msg_set_node_sig(struct tipc_msg *m, u32 n)
778{
779 msg_set_bits(m, 1, 0, 0xffff, n);
780}
781
782static inline u32 msg_node_capabilities(struct tipc_msg *m)
783{
784 return msg_bits(m, 1, 15, 0x1fff);
785}
786
787static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n)
788{
789 msg_set_bits(m, 1, 15, 0x1fff, n);
790}
791
792
793
794
795static inline u32 msg_dest_domain(struct tipc_msg *m)
796{
797 return msg_word(m, 2);
798}
799
800static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n)
801{
802 msg_set_word(m, 2, n);
803}
804
805static inline u32 msg_bcgap_after(struct tipc_msg *m)
806{
807 return msg_bits(m, 2, 16, 0xffff);
808}
809
810static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n)
811{
812 msg_set_bits(m, 2, 16, 0xffff, n);
813}
814
815static inline u32 msg_bcgap_to(struct tipc_msg *m)
816{
817 return msg_bits(m, 2, 0, 0xffff);
818}
819
820static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n)
821{
822 msg_set_bits(m, 2, 0, 0xffff, n);
823}
824
825
826
827
828static inline u32 msg_last_bcast(struct tipc_msg *m)
829{
830 return msg_bits(m, 4, 16, 0xffff);
831}
832
833static inline u32 msg_bc_snd_nxt(struct tipc_msg *m)
834{
835 return msg_last_bcast(m) + 1;
836}
837
838static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
839{
840 msg_set_bits(m, 4, 16, 0xffff, n);
841}
842
843static inline u32 msg_nof_fragms(struct tipc_msg *m)
844{
845 return msg_bits(m, 4, 0, 0xffff);
846}
847
848static inline void msg_set_nof_fragms(struct tipc_msg *m, u32 n)
849{
850 msg_set_bits(m, 4, 0, 0xffff, n);
851}
852
853static inline u32 msg_fragm_no(struct tipc_msg *m)
854{
855 return msg_bits(m, 4, 16, 0xffff);
856}
857
858static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n)
859{
860 msg_set_bits(m, 4, 16, 0xffff, n);
861}
862
863static inline u16 msg_next_sent(struct tipc_msg *m)
864{
865 return msg_bits(m, 4, 0, 0xffff);
866}
867
868static inline void msg_set_next_sent(struct tipc_msg *m, u16 n)
869{
870 msg_set_bits(m, 4, 0, 0xffff, n);
871}
872
873static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n)
874{
875 msg_set_bits(m, 4, 0, 0xffff, n);
876}
877
878static inline u32 msg_bc_netid(struct tipc_msg *m)
879{
880 return msg_word(m, 4);
881}
882
883static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
884{
885 msg_set_word(m, 4, id);
886}
887
888static inline u32 msg_link_selector(struct tipc_msg *m)
889{
890 if (msg_user(m) == MSG_FRAGMENTER)
891 m = (void *)msg_data(m);
892 return msg_bits(m, 4, 0, 1);
893}
894
895
896
897
898static inline u16 msg_session(struct tipc_msg *m)
899{
900 return msg_bits(m, 5, 16, 0xffff);
901}
902
903static inline void msg_set_session(struct tipc_msg *m, u16 n)
904{
905 msg_set_bits(m, 5, 16, 0xffff, n);
906}
907
908static inline u32 msg_probe(struct tipc_msg *m)
909{
910 return msg_bits(m, 5, 0, 1);
911}
912
913static inline void msg_set_probe(struct tipc_msg *m, u32 val)
914{
915 msg_set_bits(m, 5, 0, 1, val);
916}
917
918static inline char msg_net_plane(struct tipc_msg *m)
919{
920 return msg_bits(m, 5, 1, 7) + 'A';
921}
922
923static inline void msg_set_net_plane(struct tipc_msg *m, char n)
924{
925 msg_set_bits(m, 5, 1, 7, (n - 'A'));
926}
927
928static inline u32 msg_linkprio(struct tipc_msg *m)
929{
930 return msg_bits(m, 5, 4, 0x1f);
931}
932
933static inline void msg_set_linkprio(struct tipc_msg *m, u32 n)
934{
935 msg_set_bits(m, 5, 4, 0x1f, n);
936}
937
938static inline u32 msg_bearer_id(struct tipc_msg *m)
939{
940 return msg_bits(m, 5, 9, 0x7);
941}
942
943static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n)
944{
945 msg_set_bits(m, 5, 9, 0x7, n);
946}
947
948static inline u32 msg_redundant_link(struct tipc_msg *m)
949{
950 return msg_bits(m, 5, 12, 0x1);
951}
952
953static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r)
954{
955 msg_set_bits(m, 5, 12, 0x1, r);
956}
957
958static inline u32 msg_peer_stopping(struct tipc_msg *m)
959{
960 return msg_bits(m, 5, 13, 0x1);
961}
962
963static inline void msg_set_peer_stopping(struct tipc_msg *m, u32 s)
964{
965 msg_set_bits(m, 5, 13, 0x1, s);
966}
967
968static inline bool msg_bc_ack_invalid(struct tipc_msg *m)
969{
970 switch (msg_user(m)) {
971 case BCAST_PROTOCOL:
972 case NAME_DISTRIBUTOR:
973 case LINK_PROTOCOL:
974 return msg_bits(m, 5, 14, 0x1);
975 default:
976 return false;
977 }
978}
979
980static inline void msg_set_bc_ack_invalid(struct tipc_msg *m, bool invalid)
981{
982 msg_set_bits(m, 5, 14, 0x1, invalid);
983}
984
985static inline char *msg_media_addr(struct tipc_msg *m)
986{
987 return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET];
988}
989
990static inline u32 msg_bc_gap(struct tipc_msg *m)
991{
992 return msg_bits(m, 8, 0, 0x3ff);
993}
994
995static inline void msg_set_bc_gap(struct tipc_msg *m, u32 n)
996{
997 msg_set_bits(m, 8, 0, 0x3ff, n);
998}
999
1000
1001
1002
1003static inline u16 msg_msgcnt(struct tipc_msg *m)
1004{
1005 return msg_bits(m, 9, 16, 0xffff);
1006}
1007
1008static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n)
1009{
1010 msg_set_bits(m, 9, 16, 0xffff, n);
1011}
1012
1013static inline u16 msg_syncpt(struct tipc_msg *m)
1014{
1015 return msg_bits(m, 9, 16, 0xffff);
1016}
1017
1018static inline void msg_set_syncpt(struct tipc_msg *m, u16 n)
1019{
1020 msg_set_bits(m, 9, 16, 0xffff, n);
1021}
1022
1023static inline u32 msg_conn_ack(struct tipc_msg *m)
1024{
1025 return msg_bits(m, 9, 16, 0xffff);
1026}
1027
1028static inline void msg_set_conn_ack(struct tipc_msg *m, u32 n)
1029{
1030 msg_set_bits(m, 9, 16, 0xffff, n);
1031}
1032
1033static inline u16 msg_adv_win(struct tipc_msg *m)
1034{
1035 return msg_bits(m, 9, 0, 0xffff);
1036}
1037
1038static inline void msg_set_adv_win(struct tipc_msg *m, u16 n)
1039{
1040 msg_set_bits(m, 9, 0, 0xffff, n);
1041}
1042
1043static inline u32 msg_max_pkt(struct tipc_msg *m)
1044{
1045 return msg_bits(m, 9, 16, 0xffff) * 4;
1046}
1047
1048static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n)
1049{
1050 msg_set_bits(m, 9, 16, 0xffff, (n / 4));
1051}
1052
1053static inline u32 msg_link_tolerance(struct tipc_msg *m)
1054{
1055 return msg_bits(m, 9, 0, 0xffff);
1056}
1057
1058static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
1059{
1060 msg_set_bits(m, 9, 0, 0xffff, n);
1061}
1062
1063static inline u16 msg_grp_bc_syncpt(struct tipc_msg *m)
1064{
1065 return msg_bits(m, 9, 16, 0xffff);
1066}
1067
1068static inline void msg_set_grp_bc_syncpt(struct tipc_msg *m, u16 n)
1069{
1070 msg_set_bits(m, 9, 16, 0xffff, n);
1071}
1072
1073static inline u16 msg_grp_bc_acked(struct tipc_msg *m)
1074{
1075 return msg_bits(m, 9, 16, 0xffff);
1076}
1077
1078static inline void msg_set_grp_bc_acked(struct tipc_msg *m, u16 n)
1079{
1080 msg_set_bits(m, 9, 16, 0xffff, n);
1081}
1082
1083static inline u16 msg_grp_remitted(struct tipc_msg *m)
1084{
1085 return msg_bits(m, 9, 16, 0xffff);
1086}
1087
1088static inline void msg_set_grp_remitted(struct tipc_msg *m, u16 n)
1089{
1090 msg_set_bits(m, 9, 16, 0xffff, n);
1091}
1092
1093
1094
1095static inline u16 msg_grp_evt(struct tipc_msg *m)
1096{
1097 return msg_bits(m, 10, 0, 0x3);
1098}
1099
1100static inline void msg_set_grp_evt(struct tipc_msg *m, int n)
1101{
1102 msg_set_bits(m, 10, 0, 0x3, n);
1103}
1104
1105static inline u16 msg_grp_bc_ack_req(struct tipc_msg *m)
1106{
1107 return msg_bits(m, 10, 0, 0x1);
1108}
1109
1110static inline void msg_set_grp_bc_ack_req(struct tipc_msg *m, bool n)
1111{
1112 msg_set_bits(m, 10, 0, 0x1, n);
1113}
1114
1115static inline u16 msg_grp_bc_seqno(struct tipc_msg *m)
1116{
1117 return msg_bits(m, 10, 16, 0xffff);
1118}
1119
1120static inline void msg_set_grp_bc_seqno(struct tipc_msg *m, u32 n)
1121{
1122 msg_set_bits(m, 10, 16, 0xffff, n);
1123}
1124
1125static inline bool msg_peer_link_is_up(struct tipc_msg *m)
1126{
1127 if (likely(msg_user(m) != LINK_PROTOCOL))
1128 return true;
1129 if (msg_type(m) == STATE_MSG)
1130 return true;
1131 return false;
1132}
1133
1134static inline bool msg_peer_node_is_up(struct tipc_msg *m)
1135{
1136 if (msg_peer_link_is_up(m))
1137 return true;
1138 return msg_redundant_link(m);
1139}
1140
1141static inline bool msg_is_reset(struct tipc_msg *hdr)
1142{
1143 return (msg_user(hdr) == LINK_PROTOCOL) && (msg_type(hdr) == RESET_MSG);
1144}
1145
1146
1147
1148static inline void msg_set_peer_net_hash(struct tipc_msg *m, u32 n)
1149{
1150 msg_set_word(m, 13, n);
1151}
1152
1153static inline u32 msg_peer_net_hash(struct tipc_msg *m)
1154{
1155 return msg_word(m, 13);
1156}
1157
1158
1159
1160static inline u32 msg_sugg_node_addr(struct tipc_msg *m)
1161{
1162 return msg_word(m, 14);
1163}
1164
1165static inline void msg_set_sugg_node_addr(struct tipc_msg *m, u32 n)
1166{
1167 msg_set_word(m, 14, n);
1168}
1169
1170static inline void msg_set_node_id(struct tipc_msg *hdr, u8 *id)
1171{
1172 memcpy(msg_data(hdr), id, 16);
1173}
1174
1175static inline u8 *msg_node_id(struct tipc_msg *hdr)
1176{
1177 return (u8 *)msg_data(hdr);
1178}
1179
1180struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp);
1181bool tipc_msg_validate(struct sk_buff **_skb);
1182bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err);
1183void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb,
1184 struct sk_buff_head *xmitq);
1185void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type,
1186 u32 hsize, u32 destnode);
1187struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
1188 uint data_sz, u32 dnode, u32 onode,
1189 u32 dport, u32 oport, int errcode);
1190int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf);
1191bool tipc_msg_try_bundle(struct sk_buff *tskb, struct sk_buff **skb, u32 mss,
1192 u32 dnode, bool *new_bundle);
1193bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos);
1194int tipc_msg_fragment(struct sk_buff *skb, const struct tipc_msg *hdr,
1195 int pktmax, struct sk_buff_head *frags);
1196int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
1197 int offset, int dsz, int mtu, struct sk_buff_head *list);
1198int tipc_msg_append(struct tipc_msg *hdr, struct msghdr *m, int dlen,
1199 int mss, struct sk_buff_head *txq);
1200bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err);
1201bool tipc_msg_assemble(struct sk_buff_head *list);
1202bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq);
1203bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg,
1204 struct sk_buff_head *cpy);
1205bool __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno,
1206 struct sk_buff *skb);
1207bool tipc_msg_skb_clone(struct sk_buff_head *msg, struct sk_buff_head *cpy);
1208
1209static inline u16 buf_seqno(struct sk_buff *skb)
1210{
1211 return msg_seqno(buf_msg(skb));
1212}
1213
1214static inline int buf_roundup_len(struct sk_buff *skb)
1215{
1216 return (skb->len / 1024 + 1) * 1024;
1217}
1218
1219
1220
1221
1222
1223static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list,
1224 spinlock_t *lock)
1225{
1226 struct sk_buff *skb;
1227
1228 spin_lock_bh(lock);
1229 skb = skb_peek(list);
1230 if (skb)
1231 skb_get(skb);
1232 spin_unlock_bh(lock);
1233 return skb;
1234}
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter)
1245{
1246 struct sk_buff *skb;
1247 u32 dport = 0;
1248 bool ignore = true;
1249
1250 spin_lock_bh(&list->lock);
1251 skb_queue_walk(list, skb) {
1252 dport = msg_destport(buf_msg(skb));
1253 if (!filter || skb_queue_is_last(list, skb))
1254 break;
1255 if (dport == filter)
1256 ignore = false;
1257 else if (!ignore)
1258 break;
1259 }
1260 spin_unlock_bh(&list->lock);
1261 return dport;
1262}
1263
1264
1265
1266
1267
1268static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list,
1269 u32 dport)
1270{
1271 struct sk_buff *_skb, *tmp, *skb = NULL;
1272
1273 spin_lock_bh(&list->lock);
1274 skb_queue_walk_safe(list, _skb, tmp) {
1275 if (msg_destport(buf_msg(_skb)) == dport) {
1276 __skb_unlink(_skb, list);
1277 skb = _skb;
1278 break;
1279 }
1280 }
1281 spin_unlock_bh(&list->lock);
1282 return skb;
1283}
1284
1285
1286
1287
1288
1289static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list,
1290 struct sk_buff_head *head)
1291{
1292 spin_lock_bh(&head->lock);
1293 skb_queue_splice_tail(list, head);
1294 spin_unlock_bh(&head->lock);
1295}
1296
1297
1298
1299
1300
1301static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list,
1302 struct sk_buff_head *head)
1303{
1304 struct sk_buff_head tmp;
1305
1306 __skb_queue_head_init(&tmp);
1307
1308 spin_lock_bh(&list->lock);
1309 skb_queue_splice_tail_init(list, &tmp);
1310 spin_unlock_bh(&list->lock);
1311 tipc_skb_queue_splice_tail(&tmp, head);
1312}
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323static inline struct sk_buff *__tipc_skb_dequeue(struct sk_buff_head *list,
1324 u16 seqno)
1325{
1326 struct sk_buff *skb = skb_peek(list);
1327
1328 if (skb && less_eq(buf_seqno(skb), seqno)) {
1329 __skb_unlink(skb, list);
1330 return skb;
1331 }
1332 return NULL;
1333}
1334
1335#endif
1336