summaryrefslogtreecommitdiff
path: root/include/linux/avf/virtchnl.h
blob: db0e099c23991a1500663a474dfae52a486426d2 (plain)
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
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
/* SPDX-License-Identifier: GPL-2.0-only */
/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
 * Copyright(c) 2013 - 2014 Intel Corporation.
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

#ifndef _VIRTCHNL_H_
#define _VIRTCHNL_H_

/* Description:
 * This header file describes the VF-PF communication protocol used
 * by the drivers for all devices starting from our 40G product line
 *
 * Admin queue buffer usage:
 * desc->opcode is always aqc_opc_send_msg_to_pf
 * flags, retval, datalen, and data addr are all used normally.
 * The Firmware copies the cookie fields when sending messages between the
 * PF and VF, but uses all other fields internally. Due to this limitation,
 * we must send all messages as "indirect", i.e. using an external buffer.
 *
 * All the VSI indexes are relative to the VF. Each VF can have maximum of
 * three VSIs. All the queue indexes are relative to the VSI.  Each VF can
 * have a maximum of sixteen queues for all of its VSIs.
 *
 * The PF is required to return a status code in v_retval for all messages
 * except RESET_VF, which does not require any response. The return value
 * is of status_code type, defined in the shared type.h.
 *
 * In general, VF driver initialization should roughly follow the order of
 * these opcodes. The VF driver must first validate the API version of the
 * PF driver, then request a reset, then get resources, then configure
 * queues and interrupts. After these operations are complete, the VF
 * driver may start its queues, optionally add MAC and VLAN filters, and
 * process traffic.
 */

/* START GENERIC DEFINES
 * Need to ensure the following enums and defines hold the same meaning and
 * value in current and future projects
 */

/* Error Codes */
enum virtchnl_status_code {
	VIRTCHNL_STATUS_SUCCESS				= 0,
	VIRTCHNL_STATUS_ERR_PARAM			= -5,
	VIRTCHNL_STATUS_ERR_NO_MEMORY			= -18,
	VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH		= -38,
	VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR		= -39,
	VIRTCHNL_STATUS_ERR_INVALID_VF_ID		= -40,
	VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR		= -53,
	VIRTCHNL_STATUS_ERR_NOT_SUPPORTED		= -64,
};

/* Backward compatibility */
#define VIRTCHNL_ERR_PARAM VIRTCHNL_STATUS_ERR_PARAM
#define VIRTCHNL_STATUS_NOT_SUPPORTED VIRTCHNL_STATUS_ERR_NOT_SUPPORTED

#define VIRTCHNL_LINK_SPEED_2_5GB_SHIFT		0x0
#define VIRTCHNL_LINK_SPEED_100MB_SHIFT		0x1
#define VIRTCHNL_LINK_SPEED_1000MB_SHIFT	0x2
#define VIRTCHNL_LINK_SPEED_10GB_SHIFT		0x3
#define VIRTCHNL_LINK_SPEED_40GB_SHIFT		0x4
#define VIRTCHNL_LINK_SPEED_20GB_SHIFT		0x5
#define VIRTCHNL_LINK_SPEED_25GB_SHIFT		0x6
#define VIRTCHNL_LINK_SPEED_5GB_SHIFT		0x7

enum virtchnl_link_speed {
	VIRTCHNL_LINK_SPEED_UNKNOWN	= 0,
	VIRTCHNL_LINK_SPEED_100MB	= BIT(VIRTCHNL_LINK_SPEED_100MB_SHIFT),
	VIRTCHNL_LINK_SPEED_1GB		= BIT(VIRTCHNL_LINK_SPEED_1000MB_SHIFT),
	VIRTCHNL_LINK_SPEED_10GB	= BIT(VIRTCHNL_LINK_SPEED_10GB_SHIFT),
	VIRTCHNL_LINK_SPEED_40GB	= BIT(VIRTCHNL_LINK_SPEED_40GB_SHIFT),
	VIRTCHNL_LINK_SPEED_20GB	= BIT(VIRTCHNL_LINK_SPEED_20GB_SHIFT),
	VIRTCHNL_LINK_SPEED_25GB	= BIT(VIRTCHNL_LINK_SPEED_25GB_SHIFT),
	VIRTCHNL_LINK_SPEED_2_5GB	= BIT(VIRTCHNL_LINK_SPEED_2_5GB_SHIFT),
	VIRTCHNL_LINK_SPEED_5GB		= BIT(VIRTCHNL_LINK_SPEED_5GB_SHIFT),
};

/* for hsplit_0 field of Rx HMC context */
/* deprecated with AVF 1.0 */
enum virtchnl_rx_hsplit {
	VIRTCHNL_RX_HSPLIT_NO_SPLIT      = 0,
	VIRTCHNL_RX_HSPLIT_SPLIT_L2      = 1,
	VIRTCHNL_RX_HSPLIT_SPLIT_IP      = 2,
	VIRTCHNL_RX_HSPLIT_SPLIT_TCP_UDP = 4,
	VIRTCHNL_RX_HSPLIT_SPLIT_SCTP    = 8,
};

/* END GENERIC DEFINES */

/* Opcodes for VF-PF communication. These are placed in the v_opcode field
 * of the virtchnl_msg structure.
 */
enum virtchnl_ops {
/* The PF sends status change events to VFs using
 * the VIRTCHNL_OP_EVENT opcode.
 * VFs send requests to the PF using the other ops.
 * Use of "advanced opcode" features must be negotiated as part of capabilities
 * exchange and are not considered part of base mode feature set.
 */
	VIRTCHNL_OP_UNKNOWN = 0,
	VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */
	VIRTCHNL_OP_RESET_VF = 2,
	VIRTCHNL_OP_GET_VF_RESOURCES = 3,
	VIRTCHNL_OP_CONFIG_TX_QUEUE = 4,
	VIRTCHNL_OP_CONFIG_RX_QUEUE = 5,
	VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6,
	VIRTCHNL_OP_CONFIG_IRQ_MAP = 7,
	VIRTCHNL_OP_ENABLE_QUEUES = 8,
	VIRTCHNL_OP_DISABLE_QUEUES = 9,
	VIRTCHNL_OP_ADD_ETH_ADDR = 10,
	VIRTCHNL_OP_DEL_ETH_ADDR = 11,
	VIRTCHNL_OP_ADD_VLAN = 12,
	VIRTCHNL_OP_DEL_VLAN = 13,
	VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14,
	VIRTCHNL_OP_GET_STATS = 15,
	VIRTCHNL_OP_RSVD = 16,
	VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
	VIRTCHNL_OP_IWARP = 20, /* advanced opcode */
	VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21, /* advanced opcode */
	VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP = 22, /* advanced opcode */
	VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
	VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
	VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
	VIRTCHNL_OP_SET_RSS_HENA = 26,
	VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27,
	VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28,
	VIRTCHNL_OP_REQUEST_QUEUES = 29,
	VIRTCHNL_OP_ENABLE_CHANNELS = 30,
	VIRTCHNL_OP_DISABLE_CHANNELS = 31,
	VIRTCHNL_OP_ADD_CLOUD_FILTER = 32,
	VIRTCHNL_OP_DEL_CLOUD_FILTER = 33,
	/* opcode 34 - 44 are reserved */
	VIRTCHNL_OP_ADD_RSS_CFG = 45,
	VIRTCHNL_OP_DEL_RSS_CFG = 46,
	VIRTCHNL_OP_ADD_FDIR_FILTER = 47,
	VIRTCHNL_OP_DEL_FDIR_FILTER = 48,
	VIRTCHNL_OP_MAX,
};

/* These macros are used to generate compilation errors if a structure/union
 * is not exactly the correct length. It gives a divide by zero error if the
 * structure/union is not of the correct size, otherwise it creates an enum
 * that is never used.
 */
#define VIRTCHNL_CHECK_STRUCT_LEN(n, X) enum virtchnl_static_assert_enum_##X \
	{ virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
#define VIRTCHNL_CHECK_UNION_LEN(n, X) enum virtchnl_static_asset_enum_##X \
	{ virtchnl_static_assert_##X = (n)/((sizeof(union X) == (n)) ? 1 : 0) }

/* Virtual channel message descriptor. This overlays the admin queue
 * descriptor. All other data is passed in external buffers.
 */

struct virtchnl_msg {
	u8 pad[8];			 /* AQ flags/opcode/len/retval fields */
	enum virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
	enum virtchnl_status_code v_retval;  /* ditto for desc->retval */
	u32 vfid;			 /* used by PF when sending to VF */
};

VIRTCHNL_CHECK_STRUCT_LEN(20, virtchnl_msg);

/* Message descriptions and data structures. */

/* VIRTCHNL_OP_VERSION
 * VF posts its version number to the PF. PF responds with its version number
 * in the same format, along with a return code.
 * Reply from PF has its major/minor versions also in param0 and param1.
 * If there is a major version mismatch, then the VF cannot operate.
 * If there is a minor version mismatch, then the VF can operate but should
 * add a warning to the system log.
 *
 * This enum element MUST always be specified as == 1, regardless of other
 * changes in the API. The PF must always respond to this message without
 * error regardless of version mismatch.
 */
#define VIRTCHNL_VERSION_MAJOR		1
#define VIRTCHNL_VERSION_MINOR		1
#define VIRTCHNL_VERSION_MINOR_NO_VF_CAPS	0

struct virtchnl_version_info {
	u32 major;
	u32 minor;
};

VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_version_info);

#define VF_IS_V10(_v) (((_v)->major == 1) && ((_v)->minor == 0))
#define VF_IS_V11(_ver) (((_ver)->major == 1) && ((_ver)->minor == 1))

/* VIRTCHNL_OP_RESET_VF
 * VF sends this request to PF with no parameters
 * PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
 * until reset completion is indicated. The admin queue must be reinitialized
 * after this operation.
 *
 * When reset is complete, PF must ensure that all queues in all VSIs associated
 * with the VF are stopped, all queue configurations in the HMC are set to 0,
 * and all MAC and VLAN filters (except the default MAC address) on all VSIs
 * are cleared.
 */

/* VSI types that use VIRTCHNL interface for VF-PF communication. VSI_SRIOV
 * vsi_type should always be 6 for backward compatibility. Add other fields
 * as needed.
 */
enum virtchnl_vsi_type {
	VIRTCHNL_VSI_TYPE_INVALID = 0,
	VIRTCHNL_VSI_SRIOV = 6,
};

/* VIRTCHNL_OP_GET_VF_RESOURCES
 * Version 1.0 VF sends this request to PF with no parameters
 * Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
 * PF responds with an indirect message containing
 * virtchnl_vf_resource and one or more
 * virtchnl_vsi_resource structures.
 */

struct virtchnl_vsi_resource {
	u16 vsi_id;
	u16 num_queue_pairs;
	enum virtchnl_vsi_type vsi_type;
	u16 qset_handle;
	u8 default_mac_addr[ETH_ALEN];
};

VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);

/* VF capability flags
 * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
 * TX/RX Checksum offloading and TSO for non-tunnelled packets.
 */
#define VIRTCHNL_VF_OFFLOAD_L2			0x00000001
#define VIRTCHNL_VF_OFFLOAD_IWARP		0x00000002
#define VIRTCHNL_VF_OFFLOAD_RSVD		0x00000004
#define VIRTCHNL_VF_OFFLOAD_RSS_AQ		0x00000008
#define VIRTCHNL_VF_OFFLOAD_RSS_REG		0x00000010
#define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR		0x00000020
#define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES		0x00000040
#define VIRTCHNL_VF_OFFLOAD_VLAN		0x00010000
#define VIRTCHNL_VF_OFFLOAD_RX_POLLING		0x00020000
#define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2	0x00040000
#define VIRTCHNL_VF_OFFLOAD_RSS_PF		0X00080000
#define VIRTCHNL_VF_OFFLOAD_ENCAP		0X00100000
#define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM		0X00200000
#define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM	0X00400000
#define VIRTCHNL_VF_OFFLOAD_ADQ			0X00800000
#define VIRTCHNL_VF_OFFLOAD_USO			0X02000000
#define VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF		0X08000000
#define VIRTCHNL_VF_OFFLOAD_FDIR_PF		0X10000000

/* Define below the capability flags that are not offloads */
#define VIRTCHNL_VF_CAP_ADV_LINK_SPEED		0x00000080
#define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
			       VIRTCHNL_VF_OFFLOAD_VLAN | \
			       VIRTCHNL_VF_OFFLOAD_RSS_PF)

struct virtchnl_vf_resource {
	u16 num_vsis;
	u16 num_queue_pairs;
	u16 max_vectors;
	u16 max_mtu;

	u32 vf_cap_flags;
	u32 rss_key_size;
	u32 rss_lut_size;

	struct virtchnl_vsi_resource vsi_res[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_vf_resource);

/* VIRTCHNL_OP_CONFIG_TX_QUEUE
 * VF sends this message to set up parameters for one TX queue.
 * External data buffer contains one instance of virtchnl_txq_info.
 * PF configures requested queue and returns a status code.
 */

/* Tx queue config info */
struct virtchnl_txq_info {
	u16 vsi_id;
	u16 queue_id;
	u16 ring_len;		/* number of descriptors, multiple of 8 */
	u16 headwb_enabled; /* deprecated with AVF 1.0 */
	u64 dma_ring_addr;
	u64 dma_headwb_addr; /* deprecated with AVF 1.0 */
};

VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);

/* VIRTCHNL_OP_CONFIG_RX_QUEUE
 * VF sends this message to set up parameters for one RX queue.
 * External data buffer contains one instance of virtchnl_rxq_info.
 * PF configures requested queue and returns a status code.
 */

/* Rx queue config info */
struct virtchnl_rxq_info {
	u16 vsi_id;
	u16 queue_id;
	u32 ring_len;		/* number of descriptors, multiple of 32 */
	u16 hdr_size;
	u16 splithdr_enabled; /* deprecated with AVF 1.0 */
	u32 databuffer_size;
	u32 max_pkt_size;
	u32 pad1;
	u64 dma_ring_addr;
	enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
	u32 pad2;
};

VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_rxq_info);

/* VIRTCHNL_OP_CONFIG_VSI_QUEUES
 * VF sends this message to set parameters for all active TX and RX queues
 * associated with the specified VSI.
 * PF configures queues and returns status.
 * If the number of queues specified is greater than the number of queues
 * associated with the VSI, an error is returned and no queues are configured.
 */
struct virtchnl_queue_pair_info {
	/* NOTE: vsi_id and queue_id should be identical for both queues. */
	struct virtchnl_txq_info txq;
	struct virtchnl_rxq_info rxq;
};

VIRTCHNL_CHECK_STRUCT_LEN(64, virtchnl_queue_pair_info);

struct virtchnl_vsi_queue_config_info {
	u16 vsi_id;
	u16 num_queue_pairs;
	u32 pad;
	struct virtchnl_queue_pair_info qpair[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_vsi_queue_config_info);

/* VIRTCHNL_OP_REQUEST_QUEUES
 * VF sends this message to request the PF to allocate additional queues to
 * this VF.  Each VF gets a guaranteed number of queues on init but asking for
 * additional queues must be negotiated.  This is a best effort request as it
 * is possible the PF does not have enough queues left to support the request.
 * If the PF cannot support the number requested it will respond with the
 * maximum number it is able to support.  If the request is successful, PF will
 * then reset the VF to institute required changes.
 */

/* VF resource request */
struct virtchnl_vf_res_request {
	u16 num_queue_pairs;
};

/* VIRTCHNL_OP_CONFIG_IRQ_MAP
 * VF uses this message to map vectors to queues.
 * The rxq_map and txq_map fields are bitmaps used to indicate which queues
 * are to be associated with the specified vector.
 * The "other" causes are always mapped to vector 0.
 * PF configures interrupt mapping and returns status.
 */
struct virtchnl_vector_map {
	u16 vsi_id;
	u16 vector_id;
	u16 rxq_map;
	u16 txq_map;
	u16 rxitr_idx;
	u16 txitr_idx;
};

VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_vector_map);

struct virtchnl_irq_map_info {
	u16 num_vectors;
	struct virtchnl_vector_map vecmap[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(14, virtchnl_irq_map_info);

/* VIRTCHNL_OP_ENABLE_QUEUES
 * VIRTCHNL_OP_DISABLE_QUEUES
 * VF sends these message to enable or disable TX/RX queue pairs.
 * The queues fields are bitmaps indicating which queues to act upon.
 * (Currently, we only support 16 queues per VF, but we make the field
 * u32 to allow for expansion.)
 * PF performs requested action and returns status.
 */
struct virtchnl_queue_select {
	u16 vsi_id;
	u16 pad;
	u32 rx_queues;
	u32 tx_queues;
};

VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_select);

/* VIRTCHNL_OP_ADD_ETH_ADDR
 * VF sends this message in order to add one or more unicast or multicast
 * address filters for the specified VSI.
 * PF adds the filters and returns status.
 */

/* VIRTCHNL_OP_DEL_ETH_ADDR
 * VF sends this message in order to remove one or more unicast or multicast
 * filters for the specified VSI.
 * PF removes the filters and returns status.
 */

/* VIRTCHNL_ETHER_ADDR_LEGACY
 * Prior to adding the @type member to virtchnl_ether_addr, there were 2 pad
 * bytes. Moving forward all VF drivers should not set type to
 * VIRTCHNL_ETHER_ADDR_LEGACY. This is only here to not break previous/legacy
 * behavior. The control plane function (i.e. PF) can use a best effort method
 * of tracking the primary/device unicast in this case, but there is no
 * guarantee and functionality depends on the implementation of the PF.
 */

/* VIRTCHNL_ETHER_ADDR_PRIMARY
 * All VF drivers should set @type to VIRTCHNL_ETHER_ADDR_PRIMARY for the
 * primary/device unicast MAC address filter for VIRTCHNL_OP_ADD_ETH_ADDR and
 * VIRTCHNL_OP_DEL_ETH_ADDR. This allows for the underlying control plane
 * function (i.e. PF) to accurately track and use this MAC address for
 * displaying on the host and for VM/function reset.
 */

/* VIRTCHNL_ETHER_ADDR_EXTRA
 * All VF drivers should set @type to VIRTCHNL_ETHER_ADDR_EXTRA for any extra
 * unicast and/or multicast filters that are being added/deleted via
 * VIRTCHNL_OP_DEL_ETH_ADDR/VIRTCHNL_OP_ADD_ETH_ADDR respectively.
 */
struct virtchnl_ether_addr {
	u8 addr[ETH_ALEN];
	u8 type;
#define VIRTCHNL_ETHER_ADDR_LEGACY	0
#define VIRTCHNL_ETHER_ADDR_PRIMARY	1
#define VIRTCHNL_ETHER_ADDR_EXTRA	2
#define VIRTCHNL_ETHER_ADDR_TYPE_MASK	3 /* first two bits of type are valid */
	u8 pad;
};

VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_ether_addr);

struct virtchnl_ether_addr_list {
	u16 vsi_id;
	u16 num_elements;
	struct virtchnl_ether_addr list[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_ether_addr_list);

/* VIRTCHNL_OP_ADD_VLAN
 * VF sends this message to add one or more VLAN tag filters for receives.
 * PF adds the filters and returns status.
 * If a port VLAN is configured by the PF, this operation will return an
 * error to the VF.
 */

/* VIRTCHNL_OP_DEL_VLAN
 * VF sends this message to remove one or more VLAN tag filters for receives.
 * PF removes the filters and returns status.
 * If a port VLAN is configured by the PF, this operation will return an
 * error to the VF.
 */

struct virtchnl_vlan_filter_list {
	u16 vsi_id;
	u16 num_elements;
	u16 vlan_id[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);

/* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
 * VF sends VSI id and flags.
 * PF returns status code in retval.
 * Note: we assume that broadcast accept mode is always enabled.
 */
struct virtchnl_promisc_info {
	u16 vsi_id;
	u16 flags;
};

VIRTCHNL_CHECK_STRUCT_LEN(4, virtchnl_promisc_info);

#define FLAG_VF_UNICAST_PROMISC	0x00000001
#define FLAG_VF_MULTICAST_PROMISC	0x00000002

/* VIRTCHNL_OP_GET_STATS
 * VF sends this message to request stats for the selected VSI. VF uses
 * the virtchnl_queue_select struct to specify the VSI. The queue_id
 * field is ignored by the PF.
 *
 * PF replies with struct eth_stats in an external buffer.
 */

/* VIRTCHNL_OP_CONFIG_RSS_KEY
 * VIRTCHNL_OP_CONFIG_RSS_LUT
 * VF sends these messages to configure RSS. Only supported if both PF
 * and VF drivers set the VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
 * configuration negotiation. If this is the case, then the RSS fields in
 * the VF resource struct are valid.
 * Both the key and LUT are initialized to 0 by the PF, meaning that
 * RSS is effectively disabled until set up by the VF.
 */
struct virtchnl_rss_key {
	u16 vsi_id;
	u16 key_len;
	u8 key[1];         /* RSS hash key, packed bytes */
};

VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);

struct virtchnl_rss_lut {
	u16 vsi_id;
	u16 lut_entries;
	u8 lut[1];        /* RSS lookup table */
};

VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);

/* VIRTCHNL_OP_GET_RSS_HENA_CAPS
 * VIRTCHNL_OP_SET_RSS_HENA
 * VF sends these messages to get and set the hash filter enable bits for RSS.
 * By default, the PF sets these to all possible traffic types that the
 * hardware supports. The VF can query this value if it wants to change the
 * traffic types that are hashed by the hardware.
 */
struct virtchnl_rss_hena {
	u64 hena;
};

VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);

/* VIRTCHNL_OP_ENABLE_CHANNELS
 * VIRTCHNL_OP_DISABLE_CHANNELS
 * VF sends these messages to enable or disable channels based on
 * the user specified queue count and queue offset for each traffic class.
 * This struct encompasses all the information that the PF needs from
 * VF to create a channel.
 */
struct virtchnl_channel_info {
	u16 count; /* number of queues in a channel */
	u16 offset; /* queues in a channel start from 'offset' */
	u32 pad;
	u64 max_tx_rate;
};

VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info);

struct virtchnl_tc_info {
	u32	num_tc;
	u32	pad;
	struct	virtchnl_channel_info list[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info);

/* VIRTCHNL_ADD_CLOUD_FILTER
 * VIRTCHNL_DEL_CLOUD_FILTER
 * VF sends these messages to add or delete a cloud filter based on the
 * user specified match and action filters. These structures encompass
 * all the information that the PF needs from the VF to add/delete a
 * cloud filter.
 */

struct virtchnl_l4_spec {
	u8	src_mac[ETH_ALEN];
	u8	dst_mac[ETH_ALEN];
	__be16	vlan_id;
	__be16	pad; /* reserved for future use */
	__be32	src_ip[4];
	__be32	dst_ip[4];
	__be16	src_port;
	__be16	dst_port;
};

VIRTCHNL_CHECK_STRUCT_LEN(52, virtchnl_l4_spec);

union virtchnl_flow_spec {
	struct	virtchnl_l4_spec tcp_spec;
	u8	buffer[128]; /* reserved for future use */
};

VIRTCHNL_CHECK_UNION_LEN(128, virtchnl_flow_spec);

enum virtchnl_action {
	/* action types */
	VIRTCHNL_ACTION_DROP = 0,
	VIRTCHNL_ACTION_TC_REDIRECT,
	VIRTCHNL_ACTION_PASSTHRU,
	VIRTCHNL_ACTION_QUEUE,
	VIRTCHNL_ACTION_Q_REGION,
	VIRTCHNL_ACTION_MARK,
	VIRTCHNL_ACTION_COUNT,
};

enum virtchnl_flow_type {
	/* flow types */
	VIRTCHNL_TCP_V4_FLOW = 0,
	VIRTCHNL_TCP_V6_FLOW,
};

struct virtchnl_filter {
	union	virtchnl_flow_spec data;
	union	virtchnl_flow_spec mask;
	enum	virtchnl_flow_type flow_type;
	enum	virtchnl_action action;
	u32	action_meta;
	u8	field_flags;
	u8	pad[3];
};

VIRTCHNL_CHECK_STRUCT_LEN(272, virtchnl_filter);

/* VIRTCHNL_OP_EVENT
 * PF sends this message to inform the VF driver of events that may affect it.
 * No direct response is expected from the VF, though it may generate other
 * messages in response to this one.
 */
enum virtchnl_event_codes {
	VIRTCHNL_EVENT_UNKNOWN = 0,
	VIRTCHNL_EVENT_LINK_CHANGE,
	VIRTCHNL_EVENT_RESET_IMPENDING,
	VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
};

#define PF_EVENT_SEVERITY_INFO		0
#define PF_EVENT_SEVERITY_CERTAIN_DOOM	255

struct virtchnl_pf_event {
	enum virtchnl_event_codes event;
	union {
		/* If the PF driver does not support the new speed reporting
		 * capabilities then use link_event else use link_event_adv to
		 * get the speed and link information. The ability to understand
		 * new speeds is indicated by setting the capability flag
		 * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter
		 * in virtchnl_vf_resource struct and can be used to determine
		 * which link event struct to use below.
		 */
		struct {
			enum virtchnl_link_speed link_speed;
			bool link_status;
		} link_event;
		struct {
			/* link_speed provided in Mbps */
			u32 link_speed;
			u8 link_status;
			u8 pad[3];
		} link_event_adv;
	} event_data;

	int severity;
};

VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_pf_event);

/* VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP
 * VF uses this message to request PF to map IWARP vectors to IWARP queues.
 * The request for this originates from the VF IWARP driver through
 * a client interface between VF LAN and VF IWARP driver.
 * A vector could have an AEQ and CEQ attached to it although
 * there is a single AEQ per VF IWARP instance in which case
 * most vectors will have an INVALID_IDX for aeq and valid idx for ceq.
 * There will never be a case where there will be multiple CEQs attached
 * to a single vector.
 * PF configures interrupt mapping and returns status.
 */

struct virtchnl_iwarp_qv_info {
	u32 v_idx; /* msix_vector */
	u16 ceq_idx;
	u16 aeq_idx;
	u8 itr_idx;
	u8 pad[3];
};

VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_iwarp_qv_info);

struct virtchnl_iwarp_qvlist_info {
	u32 num_vectors;
	struct virtchnl_iwarp_qv_info qv_info[1];
};

VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_iwarp_qvlist_info);

/* VF reset states - these are written into the RSTAT register:
 * VFGEN_RSTAT on the VF
 * When the PF initiates a reset, it writes 0
 * When the reset is complete, it writes 1
 * When the PF detects that the VF has recovered, it writes 2
 * VF checks this register periodically to determine if a reset has occurred,
 * then polls it to know when the reset is complete.
 * If either the PF or VF reads the register while the hardware
 * is in a reset state, it will return DEADBEEF, which, when masked
 * will result in 3.
 */
enum virtchnl_vfr_states {
	VIRTCHNL_VFR_INPROGRESS = 0,
	VIRTCHNL_VFR_COMPLETED,
	VIRTCHNL_VFR_VFACTIVE,
};

/* Type of RSS algorithm */
enum virtchnl_rss_algorithm {
	VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC	= 0,
	VIRTCHNL_RSS_ALG_R_ASYMMETRIC		= 1,
	VIRTCHNL_RSS_ALG_TOEPLITZ_SYMMETRIC	= 2,
	VIRTCHNL_RSS_ALG_XOR_SYMMETRIC		= 3,
};

#define VIRTCHNL_MAX_NUM_PROTO_HDRS	32
#define PROTO_HDR_SHIFT			5
#define PROTO_HDR_FIELD_START(proto_hdr_type) ((proto_hdr_type) << PROTO_HDR_SHIFT)
#define PROTO_HDR_FIELD_MASK ((1UL << PROTO_HDR_SHIFT) - 1)

/* VF use these macros to configure each protocol header.
 * Specify which protocol headers and protocol header fields base on
 * virtchnl_proto_hdr_type and virtchnl_proto_hdr_field.
 * @param hdr: a struct of virtchnl_proto_hdr
 * @param hdr_type: ETH/IPV4/TCP, etc
 * @param field: SRC/DST/TEID/SPI, etc
 */
#define VIRTCHNL_ADD_PROTO_HDR_FIELD(hdr, field) \
	((hdr)->field_selector |= BIT((field) & PROTO_HDR_FIELD_MASK))
#define VIRTCHNL_DEL_PROTO_HDR_FIELD(hdr, field) \
	((hdr)->field_selector &= ~BIT((field) & PROTO_HDR_FIELD_MASK))
#define VIRTCHNL_TEST_PROTO_HDR_FIELD(hdr, val) \
	((hdr)->field_selector & BIT((val) & PROTO_HDR_FIELD_MASK))
#define VIRTCHNL_GET_PROTO_HDR_FIELD(hdr)	((hdr)->field_selector)

#define VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, hdr_type, field) \
	(VIRTCHNL_ADD_PROTO_HDR_FIELD(hdr, \
		VIRTCHNL_PROTO_HDR_ ## hdr_type ## _ ## field))
#define VIRTCHNL_DEL_PROTO_HDR_FIELD_BIT(hdr, hdr_type, field) \
	(VIRTCHNL_DEL_PROTO_HDR_FIELD(hdr, \
		VIRTCHNL_PROTO_HDR_ ## hdr_type ## _ ## field))

#define VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, hdr_type) \
	((hdr)->type = VIRTCHNL_PROTO_HDR_ ## hdr_type)
#define VIRTCHNL_GET_PROTO_HDR_TYPE(hdr) \
	(((hdr)->type) >> PROTO_HDR_SHIFT)
#define VIRTCHNL_TEST_PROTO_HDR_TYPE(hdr, val) \
	((hdr)->type == ((val) >> PROTO_HDR_SHIFT))
#define VIRTCHNL_TEST_PROTO_HDR(hdr, val) \
	(VIRTCHNL_TEST_PROTO_HDR_TYPE((hdr), (val)) && \
	 VIRTCHNL_TEST_PROTO_HDR_FIELD((hdr), (val)))

/* Protocol header type within a packet segment. A segment consists of one or
 * more protocol headers that make up a logical group of protocol headers. Each
 * logical group of protocol headers encapsulates or is encapsulated using/by
 * tunneling or encapsulation protocols for network virtualization.
 */
enum virtchnl_proto_hdr_type {
	VIRTCHNL_PROTO_HDR_NONE,
	VIRTCHNL_PROTO_HDR_ETH,
	VIRTCHNL_PROTO_HDR_S_VLAN,
	VIRTCHNL_PROTO_HDR_C_VLAN,
	VIRTCHNL_PROTO_HDR_IPV4,
	VIRTCHNL_PROTO_HDR_IPV6,
	VIRTCHNL_PROTO_HDR_TCP,
	VIRTCHNL_PROTO_HDR_UDP,
	VIRTCHNL_PROTO_HDR_SCTP,
	VIRTCHNL_PROTO_HDR_GTPU_IP,
	VIRTCHNL_PROTO_HDR_GTPU_EH,
	VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_DWN,
	VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_UP,
	VIRTCHNL_PROTO_HDR_PPPOE,
	VIRTCHNL_PROTO_HDR_L2TPV3,
	VIRTCHNL_PROTO_HDR_ESP,
	VIRTCHNL_PROTO_HDR_AH,
	VIRTCHNL_PROTO_HDR_PFCP,
};

/* Protocol header field within a protocol header. */
enum virtchnl_proto_hdr_field {
	/* ETHER */
	VIRTCHNL_PROTO_HDR_ETH_SRC =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_ETH),
	VIRTCHNL_PROTO_HDR_ETH_DST,
	VIRTCHNL_PROTO_HDR_ETH_ETHERTYPE,
	/* S-VLAN */
	VIRTCHNL_PROTO_HDR_S_VLAN_ID =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_S_VLAN),
	/* C-VLAN */
	VIRTCHNL_PROTO_HDR_C_VLAN_ID =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_C_VLAN),
	/* IPV4 */
	VIRTCHNL_PROTO_HDR_IPV4_SRC =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_IPV4),
	VIRTCHNL_PROTO_HDR_IPV4_DST,
	VIRTCHNL_PROTO_HDR_IPV4_DSCP,
	VIRTCHNL_PROTO_HDR_IPV4_TTL,
	VIRTCHNL_PROTO_HDR_IPV4_PROT,
	/* IPV6 */
	VIRTCHNL_PROTO_HDR_IPV6_SRC =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_IPV6),
	VIRTCHNL_PROTO_HDR_IPV6_DST,
	VIRTCHNL_PROTO_HDR_IPV6_TC,
	VIRTCHNL_PROTO_HDR_IPV6_HOP_LIMIT,
	VIRTCHNL_PROTO_HDR_IPV6_PROT,
	/* TCP */
	VIRTCHNL_PROTO_HDR_TCP_SRC_PORT =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_TCP),
	VIRTCHNL_PROTO_HDR_TCP_DST_PORT,
	/* UDP */
	VIRTCHNL_PROTO_HDR_UDP_SRC_PORT =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_UDP),
	VIRTCHNL_PROTO_HDR_UDP_DST_PORT,
	/* SCTP */
	VIRTCHNL_PROTO_HDR_SCTP_SRC_PORT =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_SCTP),
	VIRTCHNL_PROTO_HDR_SCTP_DST_PORT,
	/* GTPU_IP */
	VIRTCHNL_PROTO_HDR_GTPU_IP_TEID =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_GTPU_IP),
	/* GTPU_EH */
	VIRTCHNL_PROTO_HDR_GTPU_EH_PDU =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_GTPU_EH),
	VIRTCHNL_PROTO_HDR_GTPU_EH_QFI,
	/* PPPOE */
	VIRTCHNL_PROTO_HDR_PPPOE_SESS_ID =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_PPPOE),
	/* L2TPV3 */
	VIRTCHNL_PROTO_HDR_L2TPV3_SESS_ID =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_L2TPV3),
	/* ESP */
	VIRTCHNL_PROTO_HDR_ESP_SPI =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_ESP),
	/* AH */
	VIRTCHNL_PROTO_HDR_AH_SPI =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_AH),
	/* PFCP */
	VIRTCHNL_PROTO_HDR_PFCP_S_FIELD =
		PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_PFCP),
	VIRTCHNL_PROTO_HDR_PFCP_SEID,
};

struct virtchnl_proto_hdr {
	enum virtchnl_proto_hdr_type type;
	u32 field_selector; /* a bit mask to select field for header type */
	u8 buffer[64];
	/**
	 * binary buffer in network order for specific header type.
	 * For example, if type = VIRTCHNL_PROTO_HDR_IPV4, a IPv4
	 * header is expected to be copied into the buffer.
	 */
};

VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_proto_hdr);

struct virtchnl_proto_hdrs {
	u8 tunnel_level;
	u8 pad[3];
	/**
	 * specify where protocol header start from.
	 * 0 - from the outer layer
	 * 1 - from the first inner layer
	 * 2 - from the second inner layer
	 * ....
	 **/
	int count; /* the proto layers must < VIRTCHNL_MAX_NUM_PROTO_HDRS */
	struct virtchnl_proto_hdr proto_hdr[VIRTCHNL_MAX_NUM_PROTO_HDRS];
};

VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);

struct virtchnl_rss_cfg {
	struct virtchnl_proto_hdrs proto_hdrs;	   /* protocol headers */
	enum virtchnl_rss_algorithm rss_algorithm; /* RSS algorithm type */
	u8 reserved[128];			   /* reserve for future */
};

VIRTCHNL_CHECK_STRUCT_LEN(2444, virtchnl_rss_cfg);

/* action configuration for FDIR */
struct virtchnl_filter_action {
	enum virtchnl_action type;
	union {
		/* used for queue and qgroup action */
		struct {
			u16 index;
			u8 region;
		} queue;
		/* used for count action */
		struct {
			/* share counter ID with other flow rules */
			u8 shared;
			u32 id; /* counter ID */
		} count;
		/* used for mark action */
		u32 mark_id;
		u8 reserve[32];
	} act_conf;
};

VIRTCHNL_CHECK_STRUCT_LEN(36, virtchnl_filter_action);

#define VIRTCHNL_MAX_NUM_ACTIONS  8

struct virtchnl_filter_action_set {
	/* action number must be less then VIRTCHNL_MAX_NUM_ACTIONS */
	int count;
	struct virtchnl_filter_action actions[VIRTCHNL_MAX_NUM_ACTIONS];
};

VIRTCHNL_CHECK_STRUCT_LEN(292, virtchnl_filter_action_set);

/* pattern and action for FDIR rule */
struct virtchnl_fdir_rule {
	struct virtchnl_proto_hdrs proto_hdrs;
	struct virtchnl_filter_action_set action_set;
};

VIRTCHNL_CHECK_STRUCT_LEN(2604, virtchnl_fdir_rule);

/* Status returned to VF after VF requests FDIR commands
 * VIRTCHNL_FDIR_SUCCESS
 * VF FDIR related request is successfully done by PF
 * The request can be OP_ADD/DEL.
 *
 * VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE
 * OP_ADD_FDIR_FILTER request is failed due to no Hardware resource.
 *
 * VIRTCHNL_FDIR_FAILURE_RULE_EXIST
 * OP_ADD_FDIR_FILTER request is failed due to the rule is already existed.
 *
 * VIRTCHNL_FDIR_FAILURE_RULE_CONFLICT
 * OP_ADD_FDIR_FILTER request is failed due to conflict with existing rule.
 *
 * VIRTCHNL_FDIR_FAILURE_RULE_NONEXIST
 * OP_DEL_FDIR_FILTER request is failed due to this rule doesn't exist.
 *
 * VIRTCHNL_FDIR_FAILURE_RULE_INVALID
 * OP_ADD_FDIR_FILTER request is failed due to parameters validation
 * or HW doesn't support.
 *
 * VIRTCHNL_FDIR_FAILURE_RULE_TIMEOUT
 * OP_ADD/DEL_FDIR_FILTER request is failed due to timing out
 * for programming.
 */
enum virtchnl_fdir_prgm_status {
	VIRTCHNL_FDIR_SUCCESS = 0,
	VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE,
	VIRTCHNL_FDIR_FAILURE_RULE_EXIST,
	VIRTCHNL_FDIR_FAILURE_RULE_CONFLICT,
	VIRTCHNL_FDIR_FAILURE_RULE_NONEXIST,
	VIRTCHNL_FDIR_FAILURE_RULE_INVALID,
	VIRTCHNL_FDIR_FAILURE_RULE_TIMEOUT,
};

/* VIRTCHNL_OP_ADD_FDIR_FILTER
 * VF sends this request to PF by filling out vsi_id,
 * validate_only and rule_cfg. PF will return flow_id
 * if the request is successfully done and return add_status to VF.
 */
struct virtchnl_fdir_add {
	u16 vsi_id;  /* INPUT */
	/*
	 * 1 for validating a fdir rule, 0 for creating a fdir rule.
	 * Validate and create share one ops: VIRTCHNL_OP_ADD_FDIR_FILTER.
	 */
	u16 validate_only; /* INPUT */
	u32 flow_id;       /* OUTPUT */
	struct virtchnl_fdir_rule rule_cfg; /* INPUT */
	enum virtchnl_fdir_prgm_status status; /* OUTPUT */
};

VIRTCHNL_CHECK_STRUCT_LEN(2616, virtchnl_fdir_add);

/* VIRTCHNL_OP_DEL_FDIR_FILTER
 * VF sends this request to PF by filling out vsi_id
 * and flow_id. PF will return del_status to VF.
 */
struct virtchnl_fdir_del {
	u16 vsi_id;  /* INPUT */
	u16 pad;
	u32 flow_id; /* INPUT */
	enum virtchnl_fdir_prgm_status status; /* OUTPUT */
};

VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_fdir_del);

/**
 * virtchnl_vc_validate_vf_msg
 * @ver: Virtchnl version info
 * @v_opcode: Opcode for the message
 * @msg: pointer to the msg buffer
 * @msglen: msg length
 *
 * validate msg format against struct for each opcode
 */
static inline int
virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
			    u8 *msg, u16 msglen)
{
	bool err_msg_format = false;
	int valid_len = 0;

	/* Validate message length. */
	switch (v_opcode) {
	case VIRTCHNL_OP_VERSION:
		valid_len = sizeof(struct virtchnl_version_info);
		break;
	case VIRTCHNL_OP_RESET_VF:
		break;
	case VIRTCHNL_OP_GET_VF_RESOURCES:
		if (VF_IS_V11(ver))
			valid_len = sizeof(u32);
		break;
	case VIRTCHNL_OP_CONFIG_TX_QUEUE:
		valid_len = sizeof(struct virtchnl_txq_info);
		break;
	case VIRTCHNL_OP_CONFIG_RX_QUEUE:
		valid_len = sizeof(struct virtchnl_rxq_info);
		break;
	case VIRTCHNL_OP_CONFIG_VSI_QUEUES:
		valid_len = sizeof(struct virtchnl_vsi_queue_config_info);
		if (msglen >= valid_len) {
			struct virtchnl_vsi_queue_config_info *vqc =
			    (struct virtchnl_vsi_queue_config_info *)msg;
			valid_len += (vqc->num_queue_pairs *
				      sizeof(struct
					     virtchnl_queue_pair_info));
			if (vqc->num_queue_pairs == 0)
				err_msg_format = true;
		}
		break;
	case VIRTCHNL_OP_CONFIG_IRQ_MAP:
		valid_len = sizeof(struct virtchnl_irq_map_info);
		if (msglen >= valid_len) {
			struct virtchnl_irq_map_info *vimi =
			    (struct virtchnl_irq_map_info *)msg;
			valid_len += (vimi->num_vectors *
				      sizeof(struct virtchnl_vector_map));
			if (vimi->num_vectors == 0)
				err_msg_format = true;
		}
		break;
	case VIRTCHNL_OP_ENABLE_QUEUES:
	case VIRTCHNL_OP_DISABLE_QUEUES:
		valid_len = sizeof(struct virtchnl_queue_select);
		break;
	case VIRTCHNL_OP_ADD_ETH_ADDR:
	case VIRTCHNL_OP_DEL_ETH_ADDR:
		valid_len = sizeof(struct virtchnl_ether_addr_list);
		if (msglen >= valid_len) {
			struct virtchnl_ether_addr_list *veal =
			    (struct virtchnl_ether_addr_list *)msg;
			valid_len += veal->num_elements *
			    sizeof(struct virtchnl_ether_addr);
			if (veal->num_elements == 0)
				err_msg_format = true;
		}
		break;
	case VIRTCHNL_OP_ADD_VLAN:
	case VIRTCHNL_OP_DEL_VLAN:
		valid_len = sizeof(struct virtchnl_vlan_filter_list);
		if (msglen >= valid_len) {
			struct virtchnl_vlan_filter_list *vfl =
			    (struct virtchnl_vlan_filter_list *)msg;
			valid_len += vfl->num_elements * sizeof(u16);
			if (vfl->num_elements == 0)
				err_msg_format = true;
		}
		break;
	case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
		valid_len = sizeof(struct virtchnl_promisc_info);
		break;
	case VIRTCHNL_OP_GET_STATS:
		valid_len = sizeof(struct virtchnl_queue_select);
		break;
	case VIRTCHNL_OP_IWARP:
		/* These messages are opaque to us and will be validated in
		 * the RDMA client code. We just need to check for nonzero
		 * length. The firmware will enforce max length restrictions.
		 */
		if (msglen)
			valid_len = msglen;
		else
			err_msg_format = true;
		break;
	case VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
		break;
	case VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
		valid_len = sizeof(struct virtchnl_iwarp_qvlist_info);
		if (msglen >= valid_len) {
			struct virtchnl_iwarp_qvlist_info *qv =
				(struct virtchnl_iwarp_qvlist_info *)msg;
			if (qv->num_vectors == 0) {
				err_msg_format = true;
				break;
			}
			valid_len += ((qv->num_vectors - 1) *
				sizeof(struct virtchnl_iwarp_qv_info));
		}
		break;
	case VIRTCHNL_OP_CONFIG_RSS_KEY:
		valid_len = sizeof(struct virtchnl_rss_key);
		if (msglen >= valid_len) {
			struct virtchnl_rss_key *vrk =
				(struct virtchnl_rss_key *)msg;
			valid_len += vrk->key_len - 1;
		}
		break;
	case VIRTCHNL_OP_CONFIG_RSS_LUT:
		valid_len = sizeof(struct virtchnl_rss_lut);
		if (msglen >= valid_len) {
			struct virtchnl_rss_lut *vrl =
				(struct virtchnl_rss_lut *)msg;
			valid_len += vrl->lut_entries - 1;
		}
		break;
	case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
		break;
	case VIRTCHNL_OP_SET_RSS_HENA:
		valid_len = sizeof(struct virtchnl_rss_hena);
		break;
	case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
	case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING:
		break;
	case VIRTCHNL_OP_REQUEST_QUEUES:
		valid_len = sizeof(struct virtchnl_vf_res_request);
		break;
	case VIRTCHNL_OP_ENABLE_CHANNELS:
		valid_len = sizeof(struct virtchnl_tc_info);
		if (msglen >= valid_len) {
			struct virtchnl_tc_info *vti =
				(struct virtchnl_tc_info *)msg;
			valid_len += (vti->num_tc - 1) *
				     sizeof(struct virtchnl_channel_info);
			if (vti->num_tc == 0)
				err_msg_format = true;
		}
		break;
	case VIRTCHNL_OP_DISABLE_CHANNELS:
		break;
	case VIRTCHNL_OP_ADD_CLOUD_FILTER:
		valid_len = sizeof(struct virtchnl_filter);
		break;
	case VIRTCHNL_OP_DEL_CLOUD_FILTER:
		valid_len = sizeof(struct virtchnl_filter);
		break;
	case VIRTCHNL_OP_ADD_RSS_CFG:
	case VIRTCHNL_OP_DEL_RSS_CFG:
		valid_len = sizeof(struct virtchnl_rss_cfg);
		break;
	case VIRTCHNL_OP_ADD_FDIR_FILTER:
		valid_len = sizeof(struct virtchnl_fdir_add);
		break;
	case VIRTCHNL_OP_DEL_FDIR_FILTER:
		valid_len = sizeof(struct virtchnl_fdir_del);
		break;
	/* These are always errors coming from the VF. */
	case VIRTCHNL_OP_EVENT:
	case VIRTCHNL_OP_UNKNOWN:
	default:
		return VIRTCHNL_STATUS_ERR_PARAM;
	}
	/* few more checks */
	if (err_msg_format || valid_len != msglen)
		return VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH;

	return 0;
}
#endif /* _VIRTCHNL_H_ */