summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/mlx5/flow.c
blob: 216a1108ad34d847cb4a7a338e85aef4e919db3e (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
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
 * Copyright (c) 2018, Mellanox Technologies inc.  All rights reserved.
 */

#include <rdma/ib_user_verbs.h>
#include <rdma/ib_verbs.h>
#include <rdma/uverbs_types.h>
#include <rdma/uverbs_ioctl.h>
#include <rdma/uverbs_std_types.h>
#include <rdma/mlx5_user_ioctl_cmds.h>
#include <rdma/mlx5_user_ioctl_verbs.h>
#include <rdma/ib_umem.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/fs.h>
#include "mlx5_ib.h"

#define UVERBS_MODULE_NAME mlx5_ib
#include <rdma/uverbs_named_ioctl.h>

static int
mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
			     enum mlx5_flow_namespace_type *namespace)
{
	switch (table_type) {
	case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX:
		*namespace = MLX5_FLOW_NAMESPACE_BYPASS;
		break;
	case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX:
		*namespace = MLX5_FLOW_NAMESPACE_EGRESS;
		break;
	case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
		*namespace = MLX5_FLOW_NAMESPACE_FDB;
		break;
	case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
		*namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
		break;
	case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_TX:
		*namespace = MLX5_FLOW_NAMESPACE_RDMA_TX;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
	[MLX5_IB_FLOW_TYPE_NORMAL] = {
		.type = UVERBS_ATTR_TYPE_PTR_IN,
		.u.ptr = {
			.len = sizeof(u16), /* data is priority */
			.min_len = sizeof(u16),
		}
	},
	[MLX5_IB_FLOW_TYPE_SNIFFER] = {
		.type = UVERBS_ATTR_TYPE_PTR_IN,
		UVERBS_ATTR_NO_DATA(),
	},
	[MLX5_IB_FLOW_TYPE_ALL_DEFAULT] = {
		.type = UVERBS_ATTR_TYPE_PTR_IN,
		UVERBS_ATTR_NO_DATA(),
	},
	[MLX5_IB_FLOW_TYPE_MC_DEFAULT] = {
		.type = UVERBS_ATTR_TYPE_PTR_IN,
		UVERBS_ATTR_NO_DATA(),
	},
};

static int get_dests(struct uverbs_attr_bundle *attrs,
		     struct mlx5_ib_flow_matcher *fs_matcher, int *dest_id,
		     int *dest_type, struct ib_qp **qp, u32 *flags)
{
	bool dest_devx, dest_qp;
	void *devx_obj;
	int err;

	dest_devx = uverbs_attr_is_valid(attrs,
					 MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
	dest_qp = uverbs_attr_is_valid(attrs,
				       MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);

	*flags = 0;
	err = uverbs_get_flags32(flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
				 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS |
					 MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP);
	if (err)
		return err;

	/* Both flags are not allowed */
	if (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS &&
	    *flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
		return -EINVAL;

	if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
		if (dest_devx && (dest_qp || *flags))
			return -EINVAL;
		else if (dest_qp && *flags)
			return -EINVAL;
	}

	/* Allow only DEVX object, drop as dest for FDB */
	if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB && !(dest_devx ||
	     (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)))
		return -EINVAL;

	/* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
	if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
	    ((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
		return -EINVAL;

	*qp = NULL;
	if (dest_devx) {
		devx_obj =
			uverbs_attr_get_obj(attrs,
					    MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);

		/* Verify that the given DEVX object is a flow
		 * steering destination.
		 */
		if (!mlx5_ib_devx_is_flow_dest(devx_obj, dest_id, dest_type))
			return -EINVAL;
		/* Allow only flow table as dest when inserting to FDB or RDMA_RX */
		if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB ||
		     fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
		    *dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
			return -EINVAL;
	} else if (dest_qp) {
		struct mlx5_ib_qp *mqp;

		*qp = uverbs_attr_get_obj(attrs,
					  MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
		if (IS_ERR(*qp))
			return PTR_ERR(*qp);

		if ((*qp)->qp_type != IB_QPT_RAW_PACKET)
			return -EINVAL;

		mqp = to_mqp(*qp);
		if (mqp->is_rss)
			*dest_id = mqp->rss_qp.tirn;
		else
			*dest_id = mqp->raw_packet_qp.rq.tirn;
		*dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
	} else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS) {
		*dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
	}

	if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
	    fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS)
		return -EINVAL;

	return 0;
}

#define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
	struct uverbs_attr_bundle *attrs)
{
	struct mlx5_flow_context flow_context = {.flow_tag =
		MLX5_FS_DEFAULT_FLOW_TAG};
	u32 *offset_attr, offset = 0, counter_id = 0;
	int dest_id, dest_type, inlen, len, ret, i;
	struct mlx5_ib_flow_handler *flow_handler;
	struct mlx5_ib_flow_matcher *fs_matcher;
	struct ib_uobject **arr_flow_actions;
	struct ib_uflow_resources *uflow_res;
	struct mlx5_flow_act flow_act = {};
	struct ib_qp *qp = NULL;
	void *devx_obj, *cmd_in;
	struct ib_uobject *uobj;
	struct mlx5_ib_dev *dev;
	u32 flags;

	if (!capable(CAP_NET_RAW))
		return -EPERM;

	fs_matcher = uverbs_attr_get_obj(attrs,
					 MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
	uobj =  uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
	dev = mlx5_udata_to_mdev(&attrs->driver_udata);

	if (get_dests(attrs, fs_matcher, &dest_id, &dest_type, &qp, &flags))
		return -EINVAL;

	if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS)
		flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS;

	if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
		flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;

	len = uverbs_attr_get_uobjs_arr(attrs,
		MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
	if (len) {
		devx_obj = arr_flow_actions[0]->object;

		if (uverbs_attr_is_valid(attrs,
					 MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {

			int num_offsets = uverbs_attr_ptr_get_array_size(
				attrs,
				MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
				sizeof(u32));

			if (num_offsets != 1)
				return -EINVAL;

			offset_attr = uverbs_attr_get_alloced_ptr(
				attrs,
				MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
			offset = *offset_attr;
		}

		if (!mlx5_ib_devx_is_flow_counter(devx_obj, offset,
						  &counter_id))
			return -EINVAL;

		flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
	}

	cmd_in = uverbs_attr_get_alloced_ptr(
		attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
	inlen = uverbs_attr_get_len(attrs,
				    MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);

	uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
	if (!uflow_res)
		return -ENOMEM;

	len = uverbs_attr_get_uobjs_arr(attrs,
		MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
	for (i = 0; i < len; i++) {
		struct mlx5_ib_flow_action *maction =
			to_mflow_act(arr_flow_actions[i]->object);

		ret = parse_flow_flow_action(maction, false, &flow_act);
		if (ret)
			goto err_out;
		flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
				   arr_flow_actions[i]->object);
	}

	ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
			       MLX5_IB_ATTR_CREATE_FLOW_TAG);
	if (!ret) {
		if (flow_context.flow_tag >= BIT(24)) {
			ret = -EINVAL;
			goto err_out;
		}
		flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
	}

	flow_handler = mlx5_ib_raw_fs_rule_add(dev, fs_matcher,
					       &flow_context,
					       &flow_act,
					       counter_id,
					       cmd_in, inlen,
					       dest_id, dest_type);
	if (IS_ERR(flow_handler)) {
		ret = PTR_ERR(flow_handler);
		goto err_out;
	}

	ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);

	return 0;
err_out:
	ib_uverbs_flow_resources_free(uflow_res);
	return ret;
}

static int flow_matcher_cleanup(struct ib_uobject *uobject,
				enum rdma_remove_reason why,
				struct uverbs_attr_bundle *attrs)
{
	struct mlx5_ib_flow_matcher *obj = uobject->object;
	int ret;

	ret = ib_destroy_usecnt(&obj->usecnt, why, uobject);
	if (ret)
		return ret;

	kfree(obj);
	return 0;
}

static int mlx5_ib_matcher_ns(struct uverbs_attr_bundle *attrs,
			      struct mlx5_ib_flow_matcher *obj)
{
	enum mlx5_ib_uapi_flow_table_type ft_type =
		MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX;
	u32 flags;
	int err;

	/* New users should use MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE and older
	 * users should switch to it. We leave this to not break userspace
	 */
	if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE) &&
	    uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS))
		return -EINVAL;

	if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE)) {
		err = uverbs_get_const(&ft_type, attrs,
				       MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE);
		if (err)
			return err;

		err = mlx5_ib_ft_type_to_namespace(ft_type, &obj->ns_type);
		if (err)
			return err;

		return 0;
	}

	if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS)) {
		err = uverbs_get_flags32(&flags, attrs,
					 MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
					 IB_FLOW_ATTR_FLAGS_EGRESS);
		if (err)
			return err;

		if (flags) {
			mlx5_ib_ft_type_to_namespace(
				MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX,
				&obj->ns_type);
			return 0;
		}
	}

	obj->ns_type = MLX5_FLOW_NAMESPACE_BYPASS;

	return 0;
}

static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
	struct uverbs_attr_bundle *attrs)
{
	struct ib_uobject *uobj = uverbs_attr_get_uobject(
		attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
	struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
	struct mlx5_ib_flow_matcher *obj;
	int err;

	obj = kzalloc(sizeof(struct mlx5_ib_flow_matcher), GFP_KERNEL);
	if (!obj)
		return -ENOMEM;

	obj->mask_len = uverbs_attr_get_len(
		attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
	err = uverbs_copy_from(&obj->matcher_mask,
			       attrs,
			       MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
	if (err)
		goto end;

	obj->flow_type = uverbs_attr_get_enum_id(
		attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);

	if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
		err = uverbs_copy_from(&obj->priority,
				       attrs,
				       MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
		if (err)
			goto end;
	}

	err = uverbs_copy_from(&obj->match_criteria_enable,
			       attrs,
			       MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA);
	if (err)
		goto end;

	err = mlx5_ib_matcher_ns(attrs, obj);
	if (err)
		goto end;

	uobj->object = obj;
	obj->mdev = dev->mdev;
	atomic_set(&obj->usecnt, 0);
	return 0;

end:
	kfree(obj);
	return err;
}

void mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
{
	switch (maction->flow_action_raw.sub_type) {
	case MLX5_IB_FLOW_ACTION_MODIFY_HEADER:
		mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
					   maction->flow_action_raw.modify_hdr);
		break;
	case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
		mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
					     maction->flow_action_raw.pkt_reformat);
		break;
	case MLX5_IB_FLOW_ACTION_DECAP:
		break;
	default:
		break;
	}
}

static struct ib_flow_action *
mlx5_ib_create_modify_header(struct mlx5_ib_dev *dev,
			     enum mlx5_ib_uapi_flow_table_type ft_type,
			     u8 num_actions, void *in)
{
	enum mlx5_flow_namespace_type namespace;
	struct mlx5_ib_flow_action *maction;
	int ret;

	ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
	if (ret)
		return ERR_PTR(-EINVAL);

	maction = kzalloc(sizeof(*maction), GFP_KERNEL);
	if (!maction)
		return ERR_PTR(-ENOMEM);

	maction->flow_action_raw.modify_hdr =
		mlx5_modify_header_alloc(dev->mdev, namespace, num_actions, in);

	if (IS_ERR(maction->flow_action_raw.modify_hdr)) {
		ret = PTR_ERR(maction->flow_action_raw.modify_hdr);
		kfree(maction);
		return ERR_PTR(ret);
	}
	maction->flow_action_raw.sub_type =
		MLX5_IB_FLOW_ACTION_MODIFY_HEADER;
	maction->flow_action_raw.dev = dev;

	return &maction->ib_action;
}

static bool mlx5_ib_modify_header_supported(struct mlx5_ib_dev *dev)
{
	return MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
					 max_modify_header_actions) ||
	       MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
					 max_modify_header_actions) ||
	       MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
					 max_modify_header_actions);
}

static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
	struct uverbs_attr_bundle *attrs)
{
	struct ib_uobject *uobj = uverbs_attr_get_uobject(
		attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
	struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
	enum mlx5_ib_uapi_flow_table_type ft_type;
	struct ib_flow_action *action;
	int num_actions;
	void *in;
	int ret;

	if (!mlx5_ib_modify_header_supported(mdev))
		return -EOPNOTSUPP;

	in = uverbs_attr_get_alloced_ptr(attrs,
		MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);

	num_actions = uverbs_attr_ptr_get_array_size(
		attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
		MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto));
	if (num_actions < 0)
		return num_actions;

	ret = uverbs_get_const(&ft_type, attrs,
			       MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
	if (ret)
		return ret;
	action = mlx5_ib_create_modify_header(mdev, ft_type, num_actions, in);
	if (IS_ERR(action))
		return PTR_ERR(action);

	uverbs_flow_action_fill_action(action, uobj, &mdev->ib_dev,
				       IB_FLOW_ACTION_UNSPECIFIED);

	return 0;
}

static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
						      u8 packet_reformat_type,
						      u8 ft_type)
{
	switch (packet_reformat_type) {
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
		if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
			return MLX5_CAP_FLOWTABLE(ibdev->mdev,
						  encap_general_header);
		break;
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
		if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
			return MLX5_CAP_FLOWTABLE_NIC_TX(ibdev->mdev,
				reformat_l2_to_l3_tunnel);
		break;
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
		if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
			return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev,
				reformat_l3_tunnel_to_l2);
		break;
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
		if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
			return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
		break;
	default:
		break;
	}

	return false;
}

static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
{
	switch (dv_prt) {
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
		*prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
		break;
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
		*prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
		break;
	case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
		*prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int mlx5_ib_flow_action_create_packet_reformat_ctx(
	struct mlx5_ib_dev *dev,
	struct mlx5_ib_flow_action *maction,
	u8 ft_type, u8 dv_prt,
	void *in, size_t len)
{
	enum mlx5_flow_namespace_type namespace;
	u8 prm_prt;
	int ret;

	ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
	if (ret)
		return ret;

	ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
	if (ret)
		return ret;

	maction->flow_action_raw.pkt_reformat =
		mlx5_packet_reformat_alloc(dev->mdev, prm_prt, len,
					   in, namespace);
	if (IS_ERR(maction->flow_action_raw.pkt_reformat)) {
		ret = PTR_ERR(maction->flow_action_raw.pkt_reformat);
		return ret;
	}

	maction->flow_action_raw.sub_type =
		MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
	maction->flow_action_raw.dev = dev;

	return 0;
}

static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
	struct uverbs_attr_bundle *attrs)
{
	struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
		MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
	struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
	enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
	enum mlx5_ib_uapi_flow_table_type ft_type;
	struct mlx5_ib_flow_action *maction;
	int ret;

	ret = uverbs_get_const(&ft_type, attrs,
			       MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
	if (ret)
		return ret;

	ret = uverbs_get_const(&dv_prt, attrs,
			       MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
	if (ret)
		return ret;

	if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
		return -EOPNOTSUPP;

	maction = kzalloc(sizeof(*maction), GFP_KERNEL);
	if (!maction)
		return -ENOMEM;

	if (dv_prt ==
	    MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
		maction->flow_action_raw.sub_type =
			MLX5_IB_FLOW_ACTION_DECAP;
		maction->flow_action_raw.dev = mdev;
	} else {
		void *in;
		int len;

		in = uverbs_attr_get_alloced_ptr(attrs,
			MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
		if (IS_ERR(in)) {
			ret = PTR_ERR(in);
			goto free_maction;
		}

		len = uverbs_attr_get_len(attrs,
			MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);

		ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev,
			maction, ft_type, dv_prt, in, len);
		if (ret)
			goto free_maction;
	}

	uverbs_flow_action_fill_action(&maction->ib_action, uobj, &mdev->ib_dev,
				       IB_FLOW_ACTION_UNSPECIFIED);
	return 0;

free_maction:
	kfree(maction);
	return ret;
}

DECLARE_UVERBS_NAMED_METHOD(
	MLX5_IB_METHOD_CREATE_FLOW,
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
			UVERBS_OBJECT_FLOW,
			UVERBS_ACCESS_NEW,
			UA_MANDATORY),
	UVERBS_ATTR_PTR_IN(
		MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
		UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
		UA_MANDATORY,
		UA_ALLOC_AND_COPY),
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
			MLX5_IB_OBJECT_FLOW_MATCHER,
			UVERBS_ACCESS_READ,
			UA_MANDATORY),
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
			UVERBS_OBJECT_QP,
			UVERBS_ACCESS_READ),
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
			MLX5_IB_OBJECT_DEVX_OBJ,
			UVERBS_ACCESS_READ),
	UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
			     UVERBS_OBJECT_FLOW_ACTION,
			     UVERBS_ACCESS_READ, 1,
			     MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
			     UA_OPTIONAL),
	UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_TAG,
			   UVERBS_ATTR_TYPE(u32),
			   UA_OPTIONAL),
	UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
			     MLX5_IB_OBJECT_DEVX_OBJ,
			     UVERBS_ACCESS_READ, 1, 1,
			     UA_OPTIONAL),
	UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
			   UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
			   UA_OPTIONAL,
			   UA_ALLOC_AND_COPY),
	UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
			     enum mlx5_ib_create_flow_flags,
			     UA_OPTIONAL));

DECLARE_UVERBS_NAMED_METHOD_DESTROY(
	MLX5_IB_METHOD_DESTROY_FLOW,
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
			UVERBS_OBJECT_FLOW,
			UVERBS_ACCESS_DESTROY,
			UA_MANDATORY));

ADD_UVERBS_METHODS(mlx5_ib_fs,
		   UVERBS_OBJECT_FLOW,
		   &UVERBS_METHOD(MLX5_IB_METHOD_CREATE_FLOW),
		   &UVERBS_METHOD(MLX5_IB_METHOD_DESTROY_FLOW));

DECLARE_UVERBS_NAMED_METHOD(
	MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER,
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE,
			UVERBS_OBJECT_FLOW_ACTION,
			UVERBS_ACCESS_NEW,
			UA_MANDATORY),
	UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
			   UVERBS_ATTR_MIN_SIZE(MLX5_UN_SZ_BYTES(
				   set_add_copy_action_in_auto)),
			   UA_MANDATORY,
			   UA_ALLOC_AND_COPY),
	UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
			     enum mlx5_ib_uapi_flow_table_type,
			     UA_MANDATORY));

DECLARE_UVERBS_NAMED_METHOD(
	MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
			UVERBS_OBJECT_FLOW_ACTION,
			UVERBS_ACCESS_NEW,
			UA_MANDATORY),
	UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
			   UVERBS_ATTR_MIN_SIZE(1),
			   UA_ALLOC_AND_COPY,
			   UA_OPTIONAL),
	UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
			     enum mlx5_ib_uapi_flow_action_packet_reformat_type,
			     UA_MANDATORY),
	UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
			     enum mlx5_ib_uapi_flow_table_type,
			     UA_MANDATORY));

ADD_UVERBS_METHODS(
	mlx5_ib_flow_actions,
	UVERBS_OBJECT_FLOW_ACTION,
	&UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
	&UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));

DECLARE_UVERBS_NAMED_METHOD(
	MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
			MLX5_IB_OBJECT_FLOW_MATCHER,
			UVERBS_ACCESS_NEW,
			UA_MANDATORY),
	UVERBS_ATTR_PTR_IN(
		MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
		UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
		UA_MANDATORY),
	UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
			    mlx5_ib_flow_type,
			    UA_MANDATORY),
	UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
			   UVERBS_ATTR_TYPE(u8),
			   UA_MANDATORY),
	UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
			     enum ib_flow_flags,
			     UA_OPTIONAL),
	UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE,
			     enum mlx5_ib_uapi_flow_table_type,
			     UA_OPTIONAL));

DECLARE_UVERBS_NAMED_METHOD_DESTROY(
	MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
	UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
			MLX5_IB_OBJECT_FLOW_MATCHER,
			UVERBS_ACCESS_DESTROY,
			UA_MANDATORY));

DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
			    UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
			    &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
			    &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));

const struct uapi_definition mlx5_ib_flow_defs[] = {
	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
		MLX5_IB_OBJECT_FLOW_MATCHER),
	UAPI_DEF_CHAIN_OBJ_TREE(
		UVERBS_OBJECT_FLOW,
		&mlx5_ib_fs),
	UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
				&mlx5_ib_flow_actions),
	{},
};