DPDK logo

Elixir Cross Referencer

  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
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Cavium, Inc
 */

#include <rte_alarm.h>
#include <rte_bus_pci.h>
#include <rte_cryptodev.h>
#include <rte_cryptodev_pmd.h>
#include <rte_errno.h>
#include <rte_malloc.h>
#include <rte_mempool.h>

#include "cpt_pmd_logs.h"
#include "cpt_ucode.h"

#include "otx_cryptodev.h"
#include "otx_cryptodev_capabilities.h"
#include "otx_cryptodev_hw_access.h"
#include "otx_cryptodev_ops.h"

/* Forward declarations */

static int
otx_cpt_que_pair_release(struct rte_cryptodev *dev, uint16_t que_pair_id);

/* Alarm routines */

static void
otx_cpt_alarm_cb(void *arg)
{
	struct cpt_vf *cptvf = arg;
	otx_cpt_poll_misc(cptvf);
	rte_eal_alarm_set(CPT_INTR_POLL_INTERVAL_MS * 1000,
			  otx_cpt_alarm_cb, cptvf);
}

static int
otx_cpt_periodic_alarm_start(void *arg)
{
	return rte_eal_alarm_set(CPT_INTR_POLL_INTERVAL_MS * 1000,
				 otx_cpt_alarm_cb, arg);
}

static int
otx_cpt_periodic_alarm_stop(void *arg)
{
	return rte_eal_alarm_cancel(otx_cpt_alarm_cb, arg);
}

/* PMD ops */

static int
otx_cpt_dev_config(struct rte_cryptodev *dev __rte_unused,
		   struct rte_cryptodev_config *config __rte_unused)
{
	CPT_PMD_INIT_FUNC_TRACE();
	return 0;
}

static int
otx_cpt_dev_start(struct rte_cryptodev *c_dev)
{
	void *cptvf = c_dev->data->dev_private;

	CPT_PMD_INIT_FUNC_TRACE();

	return otx_cpt_start_device(cptvf);
}

static void
otx_cpt_dev_stop(struct rte_cryptodev *c_dev)
{
	void *cptvf = c_dev->data->dev_private;

	CPT_PMD_INIT_FUNC_TRACE();

	otx_cpt_stop_device(cptvf);
}

static int
otx_cpt_dev_close(struct rte_cryptodev *c_dev)
{
	void *cptvf = c_dev->data->dev_private;
	int i, ret;

	CPT_PMD_INIT_FUNC_TRACE();

	for (i = 0; i < c_dev->data->nb_queue_pairs; i++) {
		ret = otx_cpt_que_pair_release(c_dev, i);
		if (ret)
			return ret;
	}

	otx_cpt_periodic_alarm_stop(cptvf);
	otx_cpt_deinit_device(cptvf);

	return 0;
}

static void
otx_cpt_dev_info_get(struct rte_cryptodev *dev, struct rte_cryptodev_info *info)
{
	CPT_PMD_INIT_FUNC_TRACE();
	if (info != NULL) {
		info->max_nb_queue_pairs = CPT_NUM_QS_PER_VF;
		info->feature_flags = dev->feature_flags;
		info->capabilities = otx_get_capabilities();
		info->sym.max_nb_sessions = 0;
		info->driver_id = otx_cryptodev_driver_id;
		info->min_mbuf_headroom_req = OTX_CPT_MIN_HEADROOM_REQ;
		info->min_mbuf_tailroom_req = OTX_CPT_MIN_TAILROOM_REQ;
	}
}

static void
otx_cpt_stats_get(struct rte_cryptodev *dev __rte_unused,
		  struct rte_cryptodev_stats *stats __rte_unused)
{
	CPT_PMD_INIT_FUNC_TRACE();
}

static void
otx_cpt_stats_reset(struct rte_cryptodev *dev __rte_unused)
{
	CPT_PMD_INIT_FUNC_TRACE();
}

static int
otx_cpt_que_pair_setup(struct rte_cryptodev *dev,
		       uint16_t que_pair_id,
		       const struct rte_cryptodev_qp_conf *qp_conf,
		       int socket_id __rte_unused)
{
	struct cpt_instance *instance = NULL;
	struct rte_pci_device *pci_dev;
	int ret = -1;

	CPT_PMD_INIT_FUNC_TRACE();

	if (dev->data->queue_pairs[que_pair_id] != NULL) {
		ret = otx_cpt_que_pair_release(dev, que_pair_id);
		if (ret)
			return ret;
	}

	if (qp_conf->nb_descriptors > DEFAULT_CMD_QLEN) {
		CPT_LOG_INFO("Number of descriptors too big %d, using default "
			     "queue length of %d", qp_conf->nb_descriptors,
			     DEFAULT_CMD_QLEN);
	}

	pci_dev = RTE_DEV_TO_PCI(dev->device);

	if (pci_dev->mem_resource[0].addr == NULL) {
		CPT_LOG_ERR("PCI mem address null");
		return -EIO;
	}

	ret = otx_cpt_get_resource(dev, 0, &instance, que_pair_id);
	if (ret != 0 || instance == NULL) {
		CPT_LOG_ERR("Error getting instance handle from device %s : "
			    "ret = %d", dev->data->name, ret);
		return ret;
	}

	instance->queue_id = que_pair_id;
	instance->sess_mp = qp_conf->mp_session;
	instance->sess_mp_priv = qp_conf->mp_session_private;
	dev->data->queue_pairs[que_pair_id] = instance;

	return 0;
}

static int
otx_cpt_que_pair_release(struct rte_cryptodev *dev, uint16_t que_pair_id)
{
	struct cpt_instance *instance = dev->data->queue_pairs[que_pair_id];
	int ret;

	CPT_PMD_INIT_FUNC_TRACE();

	ret = otx_cpt_put_resource(instance);
	if (ret != 0) {
		CPT_LOG_ERR("Error putting instance handle of device %s : "
			    "ret = %d", dev->data->name, ret);
		return ret;
	}

	dev->data->queue_pairs[que_pair_id] = NULL;

	return 0;
}

static unsigned int
otx_cpt_get_session_size(struct rte_cryptodev *dev __rte_unused)
{
	return cpt_get_session_size();
}

static void
otx_cpt_session_init(void *sym_sess, uint8_t driver_id)
{
	struct rte_cryptodev_sym_session *sess = sym_sess;
	struct cpt_sess_misc *cpt_sess =
	 (struct cpt_sess_misc *) get_sym_session_private_data(sess, driver_id);

	CPT_PMD_INIT_FUNC_TRACE();
	cpt_sess->ctx_dma_addr = rte_mempool_virt2iova(cpt_sess) +
			sizeof(struct cpt_sess_misc);
}

static int
otx_cpt_session_cfg(struct rte_cryptodev *dev,
		    struct rte_crypto_sym_xform *xform,
		    struct rte_cryptodev_sym_session *sess,
		    struct rte_mempool *mempool)
{
	struct rte_crypto_sym_xform *chain;
	void *sess_private_data = NULL;

	CPT_PMD_INIT_FUNC_TRACE();

	if (cpt_is_algo_supported(xform))
		goto err;

	if (unlikely(sess == NULL)) {
		CPT_LOG_ERR("invalid session struct");
		return -EINVAL;
	}

	if (rte_mempool_get(mempool, &sess_private_data)) {
		CPT_LOG_ERR("Could not allocate sess_private_data");
		return -ENOMEM;
	}

	chain = xform;
	while (chain) {
		switch (chain->type) {
		case RTE_CRYPTO_SYM_XFORM_AEAD:
			if (fill_sess_aead(chain, sess_private_data))
				goto err;
			break;
		case RTE_CRYPTO_SYM_XFORM_CIPHER:
			if (fill_sess_cipher(chain, sess_private_data))
				goto err;
			break;
		case RTE_CRYPTO_SYM_XFORM_AUTH:
			if (chain->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC) {
				if (fill_sess_gmac(chain, sess_private_data))
					goto err;
			} else {
				if (fill_sess_auth(chain, sess_private_data))
					goto err;
			}
			break;
		default:
			CPT_LOG_ERR("Invalid crypto xform type");
			break;
		}
		chain = chain->next;
	}
	set_sym_session_private_data(sess, dev->driver_id, sess_private_data);
	otx_cpt_session_init(sess, dev->driver_id);
	return 0;

err:
	if (sess_private_data)
		rte_mempool_put(mempool, sess_private_data);
	return -EPERM;
}

static void
otx_cpt_session_clear(struct rte_cryptodev *dev,
		  struct rte_cryptodev_sym_session *sess)
{
	void *sess_priv = get_sym_session_private_data(sess, dev->driver_id);

	CPT_PMD_INIT_FUNC_TRACE();
	if (sess_priv) {
		memset(sess_priv, 0, otx_cpt_get_session_size(dev));
		struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
		set_sym_session_private_data(sess, dev->driver_id, NULL);
		rte_mempool_put(sess_mp, sess_priv);
	}
}

static __rte_always_inline int32_t __hot
otx_cpt_request_enqueue(struct cpt_instance *instance,
			struct pending_queue *pqueue,
			void *req)
{
	struct cpt_request_info *user_req = (struct cpt_request_info *)req;

	if (unlikely(pqueue->pending_count >= DEFAULT_CMD_QLEN))
		return -EAGAIN;

	fill_cpt_inst(instance, req);

	CPT_LOG_DP_DEBUG("req: %p op: %p ", req, user_req->op);

	/* Fill time_out cycles */
	user_req->time_out = rte_get_timer_cycles() +
			DEFAULT_COMMAND_TIMEOUT * rte_get_timer_hz();
	user_req->extra_time = 0;

	/* Default mode of software queue */
	mark_cpt_inst(instance);

	pqueue->rid_queue[pqueue->enq_tail].rid = (uintptr_t)user_req;

	/* We will use soft queue length here to limit requests */
	MOD_INC(pqueue->enq_tail, DEFAULT_CMD_QLEN);
	pqueue->pending_count += 1;

	CPT_LOG_DP_DEBUG("Submitted NB cmd with request: %p "
			 "op: %p", user_req, user_req->op);
	return 0;
}

static __rte_always_inline int __hot
otx_cpt_enq_single_sym(struct cpt_instance *instance,
		       struct rte_crypto_op *op,
		       struct pending_queue *pqueue)
{
	struct cpt_sess_misc *sess;
	struct rte_crypto_sym_op *sym_op = op->sym;
	void *prep_req, *mdata = NULL;
	int ret = 0;
	uint64_t cpt_op;

	sess = (struct cpt_sess_misc *)
			get_sym_session_private_data(sym_op->session,
						     otx_cryptodev_driver_id);

	cpt_op = sess->cpt_op;

	if (likely(cpt_op & CPT_OP_CIPHER_MASK))
		ret = fill_fc_params(op, sess, &instance->meta_info, &mdata,
				     &prep_req);
	else
		ret = fill_digest_params(op, sess, &instance->meta_info,
					 &mdata, &prep_req);

	if (unlikely(ret)) {
		CPT_LOG_DP_ERR("prep cryto req : op %p, cpt_op 0x%x "
			       "ret 0x%x", op, (unsigned int)cpt_op, ret);
		return ret;
	}

	/* Enqueue prepared instruction to h/w */
	ret = otx_cpt_request_enqueue(instance, pqueue, prep_req);

	if (unlikely(ret)) {
		/* Buffer allocated for request preparation need to be freed */
		free_op_meta(mdata, instance->meta_info.pool);
		return ret;
	}

	return 0;
}

static __rte_always_inline int __hot
otx_cpt_enq_single_sym_sessless(struct cpt_instance *instance,
				struct rte_crypto_op *op,
				struct pending_queue *pqueue)
{
	struct cpt_sess_misc *sess;
	struct rte_crypto_sym_op *sym_op = op->sym;
	int ret;
	void *sess_t = NULL;
	void *sess_private_data_t = NULL;

	/* Create tmp session */

	if (rte_mempool_get(instance->sess_mp, (void **)&sess_t)) {
		ret = -ENOMEM;
		goto exit;
	}

	if (rte_mempool_get(instance->sess_mp_priv,
			(void **)&sess_private_data_t)) {
		ret = -ENOMEM;
		goto free_sess;
	}

	sess = (struct cpt_sess_misc *)sess_private_data_t;

	sess->ctx_dma_addr = rte_mempool_virt2iova(sess) +
			sizeof(struct cpt_sess_misc);

	ret = instance_session_cfg(sym_op->xform, (void *)sess);
	if (unlikely(ret)) {
		ret = -EINVAL;
		goto free_sess_priv;
	}

	/* Save tmp session in op */

	sym_op->session = (struct rte_cryptodev_sym_session *)sess_t;
	set_sym_session_private_data(sym_op->session, otx_cryptodev_driver_id,
				     sess_private_data_t);

	/* Enqueue op with the tmp session set */
	ret = otx_cpt_enq_single_sym(instance, op, pqueue);

	if (unlikely(ret))
		goto free_sess_priv;

	return 0;

free_sess_priv:
	rte_mempool_put(instance->sess_mp_priv, sess_private_data_t);
free_sess:
	rte_mempool_put(instance->sess_mp, sess_t);
exit:
	return ret;
}

static __rte_always_inline int __hot
otx_cpt_enq_single(struct cpt_instance *inst,
		   struct rte_crypto_op *op,
		   struct pending_queue *pqueue)
{
	/* Check for the type */

	if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION)
		return otx_cpt_enq_single_sym(inst, op, pqueue);
	else if (unlikely(op->sess_type == RTE_CRYPTO_OP_SESSIONLESS))
		return otx_cpt_enq_single_sym_sessless(inst, op, pqueue);

	/* Should not reach here */
	return -EINVAL;
}

static uint16_t
otx_cpt_pkt_enqueue(void *qptr, struct rte_crypto_op **ops, uint16_t nb_ops)
{
	struct cpt_instance *instance = (struct cpt_instance *)qptr;
	uint16_t count;
	int ret;
	struct cpt_vf *cptvf = (struct cpt_vf *)instance;
	struct pending_queue *pqueue = &cptvf->pqueue;

	count = DEFAULT_CMD_QLEN - pqueue->pending_count;
	if (nb_ops > count)
		nb_ops = count;

	count = 0;
	while (likely(count < nb_ops)) {

		/* Enqueue single op */
		ret = otx_cpt_enq_single(instance, ops[count], pqueue);

		if (unlikely(ret))
			break;
		count++;
	}
	otx_cpt_ring_dbell(instance, count);
	return count;
}

static __rte_always_inline void
otx_cpt_dequeue_post_process(struct rte_crypto_op *cop, uintptr_t *rsp)
{
	/* H/w has returned success */
	cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;

	/* Perform further post processing */

	if (cop->type == RTE_CRYPTO_OP_TYPE_SYMMETRIC) {
		/* Check if auth verify need to be completed */
		if (unlikely(rsp[2]))
			compl_auth_verify(cop, (uint8_t *)rsp[2], rsp[3]);
		return;
	}
}

static uint16_t
otx_cpt_pkt_dequeue(void *qptr, struct rte_crypto_op **ops, uint16_t nb_ops)
{
	struct cpt_instance *instance = (struct cpt_instance *)qptr;
	struct cpt_request_info *user_req;
	struct cpt_vf *cptvf = (struct cpt_vf *)instance;
	struct rid *rid_e;
	uint8_t cc[nb_ops];
	int i, count, pcount;
	uint8_t ret;
	int nb_completed;
	struct pending_queue *pqueue = &cptvf->pqueue;
	struct rte_crypto_op *cop;
	void *metabuf;
	uintptr_t *rsp;

	pcount = pqueue->pending_count;
	count = (nb_ops > pcount) ? pcount : nb_ops;

	for (i = 0; i < count; i++) {
		rid_e = &pqueue->rid_queue[pqueue->deq_head];
		user_req = (struct cpt_request_info *)(rid_e->rid);

		if (likely((i+1) < count))
			rte_prefetch_non_temporal((void *)rid_e[1].rid);

		ret = check_nb_command_id(user_req, instance);

		if (unlikely(ret == ERR_REQ_PENDING)) {
			/* Stop checking for completions */
			break;
		}

		/* Return completion code and op handle */
		cc[i] = ret;
		ops[i] = user_req->op;

		CPT_LOG_DP_DEBUG("Request %p Op %p completed with code %d",
				 user_req, user_req->op, ret);

		MOD_INC(pqueue->deq_head, DEFAULT_CMD_QLEN);
		pqueue->pending_count -= 1;
	}

	nb_completed = i;

	for (i = 0; i < nb_completed; i++) {

		rsp = (void *)ops[i];

		if (likely((i + 1) < nb_completed))
			rte_prefetch0(ops[i+1]);

		metabuf = (void *)rsp[0];
		cop = (void *)rsp[1];

		ops[i] = cop;

		/* Check completion code */

		if (likely(cc[i] == 0)) {
			/* H/w success pkt. Post process */
			otx_cpt_dequeue_post_process(cop, rsp);
		} else if (cc[i] == ERR_GC_ICV_MISCOMPARE) {
			/* auth data mismatch */
			cop->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
		} else {
			/* Error */
			cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
		}

		if (unlikely(cop->sess_type == RTE_CRYPTO_OP_SESSIONLESS)) {
			void *sess_private_data_t =
				get_sym_session_private_data(cop->sym->session,
						otx_cryptodev_driver_id);
			memset(sess_private_data_t, 0,
					cpt_get_session_size());
			memset(cop->sym->session, 0,
			rte_cryptodev_sym_get_existing_header_session_size(
					cop->sym->session));
			rte_mempool_put(instance->sess_mp_priv,
					sess_private_data_t);
			rte_mempool_put(instance->sess_mp, cop->sym->session);
			cop->sym->session = NULL;
		}
		free_op_meta(metabuf, instance->meta_info.pool);
	}

	return nb_completed;
}

static struct rte_cryptodev_ops cptvf_ops = {
	/* Device related operations */
	.dev_configure = otx_cpt_dev_config,
	.dev_start = otx_cpt_dev_start,
	.dev_stop = otx_cpt_dev_stop,
	.dev_close = otx_cpt_dev_close,
	.dev_infos_get = otx_cpt_dev_info_get,

	.stats_get = otx_cpt_stats_get,
	.stats_reset = otx_cpt_stats_reset,
	.queue_pair_setup = otx_cpt_que_pair_setup,
	.queue_pair_release = otx_cpt_que_pair_release,
	.queue_pair_count = NULL,

	/* Crypto related operations */
	.sym_session_get_size = otx_cpt_get_session_size,
	.sym_session_configure = otx_cpt_session_cfg,
	.sym_session_clear = otx_cpt_session_clear
};

int
otx_cpt_dev_create(struct rte_cryptodev *c_dev)
{
	struct rte_pci_device *pdev = RTE_DEV_TO_PCI(c_dev->device);
	struct cpt_vf *cptvf = NULL;
	void *reg_base;
	char dev_name[32];
	int ret;

	if (pdev->mem_resource[0].phys_addr == 0ULL)
		return -EIO;

	/* for secondary processes, we don't initialise any further as primary
	 * has already done this work.
	 */
	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return 0;

	cptvf = rte_zmalloc_socket("otx_cryptodev_private_mem",
			sizeof(struct cpt_vf), RTE_CACHE_LINE_SIZE,
			rte_socket_id());

	if (cptvf == NULL) {
		CPT_LOG_ERR("Cannot allocate memory for device private data");
		return -ENOMEM;
	}

	snprintf(dev_name, 32, "%02x:%02x.%x",
			pdev->addr.bus, pdev->addr.devid, pdev->addr.function);

	reg_base = pdev->mem_resource[0].addr;
	if (!reg_base) {
		CPT_LOG_ERR("Failed to map BAR0 of %s", dev_name);
		ret = -ENODEV;
		goto fail;
	}

	ret = otx_cpt_hw_init(cptvf, pdev, reg_base, dev_name);
	if (ret) {
		CPT_LOG_ERR("Failed to init cptvf %s", dev_name);
		ret = -EIO;
		goto fail;
	}

	/* Start off timer for mailbox interrupts */
	otx_cpt_periodic_alarm_start(cptvf);

	c_dev->dev_ops = &cptvf_ops;

	c_dev->enqueue_burst = otx_cpt_pkt_enqueue;
	c_dev->dequeue_burst = otx_cpt_pkt_dequeue;

	c_dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
			RTE_CRYPTODEV_FF_HW_ACCELERATED |
			RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
			RTE_CRYPTODEV_FF_IN_PLACE_SGL |
			RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
			RTE_CRYPTODEV_FF_OOP_SGL_IN_SGL_OUT;

	/* Save dev private data */
	c_dev->data->dev_private = cptvf;

	return 0;

fail:
	if (cptvf) {
		/* Free private data allocated */
		rte_free(cptvf);
	}

	return ret;
}