aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/core/cm_msgs.h
blob: aec9c7af825dd9ba2e3b5dc8c9f18f1026eb3dfb (plain) (blame)
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
/*
 * Copyright (c) 2004 Intel Corporation.  All rights reserved.
 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
 * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING the madirectory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use source and binary forms, with or
 *     withmodification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retathe above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHWARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS THE
 * SOFTWARE.
 */
#if !defined(CM_MSGS_H)
#define CM_MSGS_H

#include <rdma/ib_mad.h>
#include <rdma/ib_cm.h>

/*
 * Parameters to routines below should be in network-byte order, and values
 * are returned in network-byte order.
 */

#define IB_CM_CLASS_VERSION	2 /* IB specification 1.2 */

#define CM_REQ_ATTR_ID	    __constant_htons(0x0010)
#define CM_MRA_ATTR_ID	    __constant_htons(0x0011)
#define CM_REJ_ATTR_ID	    __constant_htons(0x0012)
#define CM_REP_ATTR_ID	    __constant_htons(0x0013)
#define CM_RTU_ATTR_ID	    __constant_htons(0x0014)
#define CM_DREQ_ATTR_ID	    __constant_htons(0x0015)
#define CM_DREP_ATTR_ID	    __constant_htons(0x0016)
#define CM_SIDR_REQ_ATTR_ID __constant_htons(0x0017)
#define CM_SIDR_REP_ATTR_ID __constant_htons(0x0018)
#define CM_LAP_ATTR_ID      __constant_htons(0x0019)
#define CM_APR_ATTR_ID      __constant_htons(0x001A)

enum cm_msg_sequence {
	CM_MSG_SEQUENCE_REQ,
	CM_MSG_SEQUENCE_LAP,
	CM_MSG_SEQUENCE_DREQ,
	CM_MSG_SEQUENCE_SIDR
};

struct cm_req_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 rsvd4;
	__be64 service_id;
	__be64 local_ca_guid;
	__be32 rsvd24;
	__be32 local_qkey;
	/* local QPN:24, responder resources:8 */
	__be32 offset32;
	/* local EECN:24, initiator depth:8 */
	__be32 offset36;
	/*
	 * remote EECN:24, remote CM response timeout:5,
	 * transport service type:2, end-to-end flow control:1
	 */
	__be32 offset40;
	/* starting PSN:24, local CM response timeout:5, retry count:3 */
	__be32 offset44;
	__be16 pkey;
	/* path MTU:4, RDC exists:1, RNR retry count:3. */
	u8 offset50;
	/* max CM Retries:4, SRQ:1, rsvd:3 */
	u8 offset51;

	__be16 primary_local_lid;
	__be16 primary_remote_lid;
	union ib_gid primary_local_gid;
	union ib_gid primary_remote_gid;
	/* flow label:20, rsvd:6, packet rate:6 */
	__be32 primary_offset88;
	u8 primary_traffic_class;
	u8 primary_hop_limit;
	/* SL:4, subnet local:1, rsvd:3 */
	u8 primary_offset94;
	/* local ACK timeout:5, rsvd:3 */
	u8 primary_offset95;

	__be16 alt_local_lid;
	__be16 alt_remote_lid;
	union ib_gid alt_local_gid;
	union ib_gid alt_remote_gid;
	/* flow label:20, rsvd:6, packet rate:6 */
	__be32 alt_offset132;
	u8 alt_traffic_class;
	u8 alt_hop_limit;
	/* SL:4, subnet local:1, rsvd:3 */
	u8 alt_offset138;
	/* local ACK timeout:5, rsvd:3 */
	u8 alt_offset139;

	u8 private_data[IB_CM_REQ_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

static inline __be32 cm_req_get_local_qpn(struct cm_req_msg *req_msg)
{
	return cpu_to_be32(be32_to_cpu(req_msg->offset32) >> 8);
}

static inline void cm_req_set_local_qpn(struct cm_req_msg *req_msg, __be32 qpn)
{
	req_msg->offset32 = cpu_to_be32((be32_to_cpu(qpn) << 8) |
					 (be32_to_cpu(req_msg->offset32) &
					  0x000000FF));
}

static inline u8 cm_req_get_resp_res(struct cm_req_msg *req_msg)
{
	return (u8) be32_to_cpu(req_msg->offset32);
}

static inline void cm_req_set_resp_res(struct cm_req_msg *req_msg, u8 resp_res)
{
	req_msg->offset32 = cpu_to_be32(resp_res |
					(be32_to_cpu(req_msg->offset32) &
					 0xFFFFFF00));
}

static inline u8 cm_req_get_init_depth(struct cm_req_msg *req_msg)
{
	return (u8) be32_to_cpu(req_msg->offset36);
}

static inline void cm_req_set_init_depth(struct cm_req_msg *req_msg,
					 u8 init_depth)
{
	req_msg->offset36 = cpu_to_be32(init_depth |
					(be32_to_cpu(req_msg->offset36) &
					 0xFFFFFF00));
}

static inline u8 cm_req_get_remote_resp_timeout(struct cm_req_msg *req_msg)
{
	return (u8) ((be32_to_cpu(req_msg->offset40) & 0xF8) >> 3);
}

static inline void cm_req_set_remote_resp_timeout(struct cm_req_msg *req_msg,
						  u8 resp_timeout)
{
	req_msg->offset40 = cpu_to_be32((resp_timeout << 3) |
					 (be32_to_cpu(req_msg->offset40) &
					  0xFFFFFF07));
}

static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg)
{
	u8 transport_type = (u8) (be32_to_cpu(req_msg->offset40) & 0x06) >> 1;
	switch(transport_type) {
	case 0: return IB_QPT_RC;
	case 1: return IB_QPT_UC;
	default: return 0;
	}
}

static inline void cm_req_set_qp_type(struct cm_req_msg *req_msg,
				      enum ib_qp_type qp_type)
{
	switch(qp_type) {
	case IB_QPT_UC:
		req_msg->offset40 = cpu_to_be32((be32_to_cpu(
						  req_msg->offset40) &
						   0xFFFFFFF9) | 0x2);
		break;
	default:
		req_msg->offset40 = cpu_to_be32(be32_to_cpu(
						 req_msg->offset40) &
						  0xFFFFFFF9);
	}
}

static inline u8 cm_req_get_flow_ctrl(struct cm_req_msg *req_msg)
{
	return be32_to_cpu(req_msg->offset40) & 0x1;
}

static inline void cm_req_set_flow_ctrl(struct cm_req_msg *req_msg,
					u8 flow_ctrl)
{
	req_msg->offset40 = cpu_to_be32((flow_ctrl & 0x1) |
					 (be32_to_cpu(req_msg->offset40) &
					  0xFFFFFFFE));
}

static inline __be32 cm_req_get_starting_psn(struct cm_req_msg *req_msg)
{
	return cpu_to_be32(be32_to_cpu(req_msg->offset44) >> 8);
}

static inline void cm_req_set_starting_psn(struct cm_req_msg *req_msg,
					   __be32 starting_psn)
{
	req_msg->offset44 = cpu_to_be32((be32_to_cpu(starting_psn) << 8) |
			    (be32_to_cpu(req_msg->offset44) & 0x000000FF));
}

static inline u8 cm_req_get_local_resp_timeout(struct cm_req_msg *req_msg)
{
	return (u8) ((be32_to_cpu(req_msg->offset44) & 0xF8) >> 3);
}

static inline void cm_req_set_local_resp_timeout(struct cm_req_msg *req_msg,
						 u8 resp_timeout)
{
	req_msg->offset44 = cpu_to_be32((resp_timeout << 3) |
			    (be32_to_cpu(req_msg->offset44) & 0xFFFFFF07));
}

static inline u8 cm_req_get_retry_count(struct cm_req_msg *req_msg)
{
	return (u8) (be32_to_cpu(req_msg->offset44) & 0x7);
}

static inline void cm_req_set_retry_count(struct cm_req_msg *req_msg,
					  u8 retry_count)
{
	req_msg->offset44 = cpu_to_be32((retry_count & 0x7) |
			    (be32_to_cpu(req_msg->offset44) & 0xFFFFFFF8));
}

static inline u8 cm_req_get_path_mtu(struct cm_req_msg *req_msg)
{
	return req_msg->offset50 >> 4;
}

static inline void cm_req_set_path_mtu(struct cm_req_msg *req_msg, u8 path_mtu)
{
	req_msg->offset50 = (u8) ((req_msg->offset50 & 0xF) | (path_mtu << 4));
}

static inline u8 cm_req_get_rnr_retry_count(struct cm_req_msg *req_msg)
{
	return req_msg->offset50 & 0x7;
}

static inline void cm_req_set_rnr_retry_count(struct cm_req_msg *req_msg,
					      u8 rnr_retry_count)
{
	req_msg->offset50 = (u8) ((req_msg->offset50 & 0xF8) |
				  (rnr_retry_count & 0x7));
}

static inline u8 cm_req_get_max_cm_retries(struct cm_req_msg *req_msg)
{
	return req_msg->offset51 >> 4;
}

static inline void cm_req_set_max_cm_retries(struct cm_req_msg *req_msg,
					     u8 retries)
{
	req_msg->offset51 = (u8) ((req_msg->offset51 & 0xF) | (retries << 4));
}

static inline u8 cm_req_get_srq(struct cm_req_msg *req_msg)
{
	return (req_msg->offset51 & 0x8) >> 3;
}

static inline void cm_req_set_srq(struct cm_req_msg *req_msg, u8 srq)
{
	req_msg->offset51 = (u8) ((req_msg->offset51 & 0xF7) |
				  ((srq & 0x1) << 3));
}

static inline __be32 cm_req_get_primary_flow_label(struct cm_req_msg *req_msg)
{
	return cpu_to_be32(be32_to_cpu(req_msg->primary_offset88) >> 12);
}

static inline void cm_req_set_primary_flow_label(struct cm_req_msg *req_msg,
						 __be32 flow_label)
{
	req_msg->primary_offset88 = cpu_to_be32(
				    (be32_to_cpu(req_msg->primary_offset88) &
				     0x00000FFF) |
				     (be32_to_cpu(flow_label) << 12));
}

static inline u8 cm_req_get_primary_packet_rate(struct cm_req_msg *req_msg)
{
	return (u8) (be32_to_cpu(req_msg->primary_offset88) & 0x3F);
}

static inline void cm_req_set_primary_packet_rate(struct cm_req_msg *req_msg,
						  u8 rate)
{
	req_msg->primary_offset88 = cpu_to_be32(
				    (be32_to_cpu(req_msg->primary_offset88) &
				     0xFFFFFFC0) | (rate & 0x3F));
}

static inline u8 cm_req_get_primary_sl(struct cm_req_msg *req_msg)
{
	return (u8) (req_msg->primary_offset94 >> 4);
}

static inline void cm_req_set_primary_sl(struct cm_req_msg *req_msg, u8 sl)
{
	req_msg->primary_offset94 = (u8) ((req_msg->primary_offset94 & 0x0F) |
					  (sl << 4));
}

static inline u8 cm_req_get_primary_subnet_local(struct cm_req_msg *req_msg)
{
	return (u8) ((req_msg->primary_offset94 & 0x08) >> 3);
}

static inline void cm_req_set_primary_subnet_local(struct cm_req_msg *req_msg,
						   u8 subnet_local)
{
	req_msg->primary_offset94 = (u8) ((req_msg->primary_offset94 & 0xF7) |
					  ((subnet_local & 0x1) << 3));
}

static inline u8 cm_req_get_primary_local_ack_timeout(struct cm_req_msg *req_msg)
{
	return (u8) (req_msg->primary_offset95 >> 3);
}

static inline void cm_req_set_primary_local_ack_timeout(struct cm_req_msg *req_msg,
							u8 local_ack_timeout)
{
	req_msg->primary_offset95 = (u8) ((req_msg->primary_offset95 & 0x07) |
					  (local_ack_timeout << 3));
}

static inline __be32 cm_req_get_alt_flow_label(struct cm_req_msg *req_msg)
{
	return cpu_to_be32(be32_to_cpu(req_msg->alt_offset132) >> 12);
}

static inline void cm_req_set_alt_flow_label(struct cm_req_msg *req_msg,
					     __be32 flow_label)
{
	req_msg->alt_offset132 = cpu_to_be32(
				 (be32_to_cpu(req_msg->alt_offset132) &
				  0x00000FFF) |
				  (be32_to_cpu(flow_label) << 12));
}

static inline u8 cm_req_get_alt_packet_rate(struct cm_req_msg *req_msg)
{
	return (u8) (be32_to_cpu(req_msg->alt_offset132) & 0x3F);
}

static inline void cm_req_set_alt_packet_rate(struct cm_req_msg *req_msg,
					      u8 rate)
{
	req_msg->alt_offset132 = cpu_to_be32(
				 (be32_to_cpu(req_msg->alt_offset132) &
				  0xFFFFFFC0) | (rate & 0x3F));
}

static inline u8 cm_req_get_alt_sl(struct cm_req_msg *req_msg)
{
	return (u8) (req_msg->alt_offset138 >> 4);
}

static inline void cm_req_set_alt_sl(struct cm_req_msg *req_msg, u8 sl)
{
	req_msg->alt_offset138 = (u8) ((req_msg->alt_offset138 & 0x0F) |
				       (sl << 4));
}

static inline u8 cm_req_get_alt_subnet_local(struct cm_req_msg *req_msg)
{
	return (u8) ((req_msg->alt_offset138 & 0x08) >> 3);
}

static inline void cm_req_set_alt_subnet_local(struct cm_req_msg *req_msg,
					       u8 subnet_local)
{
	req_msg->alt_offset138 = (u8) ((req_msg->alt_offset138 & 0xF7) |
				       ((subnet_local & 0x1) << 3));
}

static inline u8 cm_req_get_alt_local_ack_timeout(struct cm_req_msg *req_msg)
{
	return (u8) (req_msg->alt_offset139 >> 3);
}

static inline void cm_req_set_alt_local_ack_timeout(struct cm_req_msg *req_msg,
						    u8 local_ack_timeout)
{
	req_msg->alt_offset139 = (u8) ((req_msg->alt_offset139 & 0x07) |
				       (local_ack_timeout << 3));
}

/* Message REJected or MRAed */
enum cm_msg_response {
	CM_MSG_RESPONSE_REQ = 0x0,
	CM_MSG_RESPONSE_REP = 0x1,
	CM_MSG_RESPONSE_OTHER = 0x2
};

 struct cm_mra_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;
	/* message MRAed:2, rsvd:6 */
	u8 offset8;
	/* service timeout:5, rsvd:3 */
	u8 offset9;

	u8 private_data[IB_CM_MRA_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

static inline u8 cm_mra_get_msg_mraed(struct cm_mra_msg *mra_msg)
{
	return (u8) (mra_msg->offset8 >> 6);
}

static inline void cm_mra_set_msg_mraed(struct cm_mra_msg *mra_msg, u8 msg)
{
	mra_msg->offset8 = (u8) ((mra_msg->offset8 & 0x3F) | (msg << 6));
}

static inline u8 cm_mra_get_service_timeout(struct cm_mra_msg *mra_msg)
{
	return (u8) (mra_msg->offset9 >> 3);
}

static inline void cm_mra_set_service_timeout(struct cm_mra_msg *mra_msg,
					      u8 service_timeout)
{
	mra_msg->offset9 = (u8) ((mra_msg->offset9 & 0x07) |
				 (service_timeout << 3));
}

struct cm_rej_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;
	/* message REJected:2, rsvd:6 */
	u8 offset8;
	/* reject info length:7, rsvd:1. */
	u8 offset9;
	__be16 reason;
	u8 ari[IB_CM_REJ_ARI_LENGTH];

	u8 private_data[IB_CM_REJ_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

static inline u8 cm_rej_get_msg_rejected(struct cm_rej_msg *rej_msg)
{
	return (u8) (rej_msg->offset8 >> 6);
}

static inline void cm_rej_set_msg_rejected(struct cm_rej_msg *rej_msg, u8 msg)
{
	rej_msg->offset8 = (u8) ((rej_msg->offset8 & 0x3F) | (msg << 6));
}

static inline u8 cm_rej_get_reject_info_len(struct cm_rej_msg *rej_msg)
{
	return (u8) (rej_msg->offset9 >> 1);
}

static inline void cm_rej_set_reject_info_len(struct cm_rej_msg *rej_msg,
					      u8 len)
{
	rej_msg->offset9 = (u8) ((rej_msg->offset9 & 0x1) | (len << 1));
}

struct cm_rep_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;
	__be32 local_qkey;
	/* local QPN:24, rsvd:8 */
	__be32 offset12;
	/* local EECN:24, rsvd:8 */
	__be32 offset16;
	/* starting PSN:24 rsvd:8 */
	__be32 offset20;
	u8 resp_resources;
	u8 initiator_depth;
	/* target ACK delay:5, failover accepted:2, end-to-end flow control:1 */
	u8 offset26;
	/* RNR retry count:3, SRQ:1, rsvd:5 */
	u8 offset27;
	__be64 local_ca_guid;

	u8 private_data[IB_CM_REP_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

static inline __be32 cm_rep_get_local_qpn(struct cm_rep_msg *rep_msg)
{
	return cpu_to_be32(be32_to_cpu(rep_msg->offset12) >> 8);
}

static inline void cm_rep_set_local_qpn(struct cm_rep_msg *rep_msg, __be32 qpn)
{
	rep_msg->offset12 = cpu_to_be32((be32_to_cpu(qpn) << 8) |
			    (be32_to_cpu(rep_msg->offset12) & 0x000000FF));
}

static inline __be32 cm_rep_get_starting_psn(struct cm_rep_msg *rep_msg)
{
	return cpu_to_be32(be32_to_cpu(rep_msg->offset20) >> 8);
}

static inline void cm_rep_set_starting_psn(struct cm_rep_msg *rep_msg,
					   __be32 starting_psn)
{
	rep_msg->offset20 = cpu_to_be32((be32_to_cpu(starting_psn) << 8) |
			    (be32_to_cpu(rep_msg->offset20) & 0x000000FF));
}

static inline u8 cm_rep_get_target_ack_delay(struct cm_rep_msg *rep_msg)
{
	return (u8) (rep_msg->offset26 >> 3);
}

static inline void cm_rep_set_target_ack_delay(struct cm_rep_msg *rep_msg,
					       u8 target_ack_delay)
{
	rep_msg->offset26 = (u8) ((rep_msg->offset26 & 0x07) |
				  (target_ack_delay << 3));
}

static inline u8 cm_rep_get_failover(struct cm_rep_msg *rep_msg)
{
	return (u8) ((rep_msg->offset26 & 0x06) >> 1);
}

static inline void cm_rep_set_failover(struct cm_rep_msg *rep_msg, u8 failover)
{
	rep_msg->offset26 = (u8) ((rep_msg->offset26 & 0xF9) |
				  ((failover & 0x3) << 1));
}

static inline u8 cm_rep_get_flow_ctrl(struct cm_rep_msg *rep_msg)
{
	return (u8) (rep_msg->offset26 & 0x01);
}

static inline void cm_rep_set_flow_ctrl(struct cm_rep_msg *rep_msg,
					    u8 flow_ctrl)
{
	rep_msg->offset26 = (u8) ((rep_msg->offset26 & 0xFE) |
				  (flow_ctrl & 0x1));
}

static inline u8 cm_rep_get_rnr_retry_count(struct cm_rep_msg *rep_msg)
{
	return (u8) (rep_msg->offset27 >> 5);
}

static inline void cm_rep_set_rnr_retry_count(struct cm_rep_msg *rep_msg,
					      u8 rnr_retry_count)
{
	rep_msg->offset27 = (u8) ((rep_msg->offset27 & 0x1F) |
				  (rnr_retry_count << 5));
}

static inline u8 cm_rep_get_srq(struct cm_rep_msg *rep_msg)
{
	return (u8) ((rep_msg->offset27 >> 4) & 0x1);
}

static inline void cm_rep_set_srq(struct cm_rep_msg *rep_msg, u8 srq)
{
	rep_msg->offset27 = (u8) ((rep_msg->offset27 & 0xEF) |
				  ((srq & 0x1) << 4));
}

struct cm_rtu_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;

	u8 private_data[IB_CM_RTU_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

struct cm_dreq_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;
	/* remote QPN/EECN:24, rsvd:8 */
	__be32 offset8;

	u8 private_data[IB_CM_DREQ_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

static inline __be32 cm_dreq_get_remote_qpn(struct cm_dreq_msg *dreq_msg)
{
	return cpu_to_be32(be32_to_cpu(dreq_msg->offset8) >> 8);
}

static inline void cm_dreq_set_remote_qpn(struct cm_dreq_msg *dreq_msg, __be32 qpn)
{
	dreq_msg->offset8 = cpu_to_be32((be32_to_cpu(qpn) << 8) |
			    (be32_to_cpu(dreq_msg->offset8) & 0x000000FF));
}

struct cm_drep_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;

	u8 private_data[IB_CM_DREP_PRIVATE_DATA_SIZE];

} __attribute__ ((packed));

struct cm_lap_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;

	__be32 rsvd8;
	/* remote QPN/EECN:24, remote CM response timeout:5, rsvd:3 */
	__be32 offset12;
	__be32 rsvd16;

	__be16 alt_local_lid;
	__be16 alt_remote_lid;
	union ib_gid alt_local_gid;
	union ib_gid alt_remote_gid;
	/* flow label:20, rsvd:4, traffic class:8 */
	__be32 offset56;
	u8 alt_hop_limit;
	/* rsvd:2, packet rate:6 */
	u8 offset61;
	/* SL:4, subnet local:1, rsvd:3 */
	u8 offset62;
	/* local ACK timeout:5, rsvd:3 */
	u8 offset63;

	u8 private_data[IB_CM_LAP_PRIVATE_DATA_SIZE];
} __attribute__  ((packed));

static inline __be32 cm_lap_get_remote_qpn(struct cm_lap_msg *lap_msg)
{
	return cpu_to_be32(be32_to_cpu(lap_msg->offset12) >> 8);
}

static inline void cm_lap_set_remote_qpn(struct cm_lap_msg *lap_msg, __be32 qpn)
{
	lap_msg->offset12 = cpu_to_be32((be32_to_cpu(qpn) << 8) |
					 (be32_to_cpu(lap_msg->offset12) &
					  0x000000FF));
}

static inline u8 cm_lap_get_remote_resp_timeout(struct cm_lap_msg *lap_msg)
{
	return (u8) ((be32_to_cpu(lap_msg->offset12) & 0xF8) >> 3);
}

static inline void cm_lap_set_remote_resp_timeout(struct cm_lap_msg *lap_msg,
						  u8 resp_timeout)
{
	lap_msg->offset12 = cpu_to_be32((resp_timeout << 3) |
					 (be32_to_cpu(lap_msg->offset12) &
					  0xFFFFFF07));
}

static inline __be32 cm_lap_get_flow_label(struct cm_lap_msg *lap_msg)
{
	return cpu_to_be32(be32_to_cpu(lap_msg->offset56) >> 12);
}

static inline void cm_lap_set_flow_label(struct cm_lap_msg *lap_msg,
					 __be32 flow_label)
{
	lap_msg->offset56 = cpu_to_be32(
				 (be32_to_cpu(lap_msg->offset56) & 0x00000FFF) |
				 (be32_to_cpu(flow_label) << 12));
}

static inline u8 cm_lap_get_traffic_class(struct cm_lap_msg *lap_msg)
{
	return (u8) be32_to_cpu(lap_msg->offset56);
}

static inline void cm_lap_set_traffic_class(struct cm_lap_msg *lap_msg,
					    u8 traffic_class)
{
	lap_msg->offset56 = cpu_to_be32(traffic_class |
					 (be32_to_cpu(lap_msg->offset56) &
					  0xFFFFFF00));
}

static inline u8 cm_lap_get_packet_rate(struct cm_lap_msg *lap_msg)
{
	return lap_msg->offset61 & 0x3F;
}

static inline void cm_lap_set_packet_rate(struct cm_lap_msg *lap_msg,
					  u8 packet_rate)
{
	lap_msg->offset61 = (packet_rate & 0x3F) | (lap_msg->offset61 & 0xC0);
}

static inline u8 cm_lap_get_sl(struct cm_lap_msg *lap_msg)
{
	return lap_msg->offset62 >> 4;
}

static inline void cm_lap_set_sl(struct cm_lap_msg *lap_msg, u8 sl)
{
	lap_msg->offset62 = (sl << 4) | (lap_msg->offset62 & 0x0F);
}

static inline u8 cm_lap_get_subnet_local(struct cm_lap_msg *lap_msg)
{
	return (lap_msg->offset62 >> 3) & 0x1;
}

static inline void cm_lap_set_subnet_local(struct cm_lap_msg *lap_msg,
					   u8 subnet_local)
{
	lap_msg->offset62 = ((subnet_local & 0x1) << 3) |
			     (lap_msg->offset61 & 0xF7);
}
static inline u8 cm_lap_get_local_ack_timeout(struct cm_lap_msg *lap_msg)
{
	return lap_msg->offset63 >> 3;
}

static inline void cm_lap_set_local_ack_timeout(struct cm_lap_msg *lap_msg,
						u8 local_ack_timeout)
{
	lap_msg->offset63 = (local_ack_timeout << 3) |
			    (lap_msg->offset63 & 0x07);
}

struct cm_apr_msg {
	struct ib_mad_hdr hdr;

	__be32 local_comm_id;
	__be32 remote_comm_id;

	u8 info_length;
	u8 ap_status;
	u8 info[IB_CM_APR_INFO_LENGTH];

	u8 private_data[IB_CM_APR_PRIVATE_DATA_SIZE];
} __attribute__ ((packed));

struct cm_sidr_req_msg {
	struct ib_mad_hdr hdr;

	__be32 request_id;
	__be16 pkey;
	__be16 rsvd;
	__be64 service_id;

	u8 private_data[IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE];
} __attribute__ ((packed));

struct cm_sidr_rep_msg {
	struct ib_mad_hdr hdr;

	__be32 request_id;
	u8 status;
	u8 info_length;
	__be16 rsvd;
	/* QPN:24, rsvd:8 */
	__be32 offset8;
	__be64 service_id;
	__be32 qkey;
	u8 info[IB_CM_SIDR_REP_INFO_LENGTH];

	u8 private_data[IB_CM_SIDR_REP_PRIVATE_DATA_SIZE];
} __attribute__ ((packed));

static inline __be32 cm_sidr_rep_get_qpn(struct cm_sidr_rep_msg *sidr_rep_msg)
{
	return cpu_to_be32(be32_to_cpu(sidr_rep_msg->offset8) >> 8);
}

static inline void cm_sidr_rep_set_qpn(struct cm_sidr_rep_msg *sidr_rep_msg,
				       __be32 qpn)
{
	sidr_rep_msg->offset8 = cpu_to_be32((be32_to_cpu(qpn) << 8) |
					(be32_to_cpu(sidr_rep_msg->offset8) &
					 0x000000FF));
}

#endif /* CM_MSGS_H */