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
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 Intel Corporation
 */
#include <string.h>

#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_dev.h>
#include <rte_cryptodev.h>
#include <rte_cryptodev_pmd.h>
#include <rte_reorder.h>

#include "scheduler_pmd_private.h"

/** attaching the slaves predefined by scheduler's EAL options */
static int
scheduler_attach_init_slave(struct rte_cryptodev *dev)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint8_t scheduler_id = dev->data->dev_id;
	int i;

	for (i = sched_ctx->nb_init_slaves - 1; i >= 0; i--) {
		const char *dev_name = sched_ctx->init_slave_names[i];
		struct rte_cryptodev *slave_dev =
				rte_cryptodev_pmd_get_named_dev(dev_name);
		int status;

		if (!slave_dev) {
			CR_SCHED_LOG(ERR, "Failed to locate slave dev %s",
					dev_name);
			return -EINVAL;
		}

		status = rte_cryptodev_scheduler_slave_attach(
				scheduler_id, slave_dev->data->dev_id);

		if (status < 0) {
			CR_SCHED_LOG(ERR, "Failed to attach slave cryptodev %u",
					slave_dev->data->dev_id);
			return status;
		}

		CR_SCHED_LOG(INFO, "Scheduler %s attached slave %s",
				dev->data->name,
				sched_ctx->init_slave_names[i]);

		rte_free(sched_ctx->init_slave_names[i]);
		sched_ctx->init_slave_names[i] = NULL;

		sched_ctx->nb_init_slaves -= 1;
	}

	return 0;
}
/** Configure device */
static int
scheduler_pmd_config(struct rte_cryptodev *dev,
		struct rte_cryptodev_config *config)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;
	int ret;

	/* although scheduler_attach_init_slave presents multiple times,
	 * there will be only 1 meaningful execution.
	 */
	ret = scheduler_attach_init_slave(dev);
	if (ret < 0)
		return ret;

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;

		ret = rte_cryptodev_configure(slave_dev_id, config);
		if (ret < 0)
			break;
	}

	return ret;
}

static int
update_order_ring(struct rte_cryptodev *dev, uint16_t qp_id)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];

	if (sched_ctx->reordering_enabled) {
		char order_ring_name[RTE_CRYPTODEV_NAME_MAX_LEN];
		uint32_t buff_size = rte_align32pow2(
			sched_ctx->nb_slaves * PER_SLAVE_BUFF_SIZE);

		if (qp_ctx->order_ring) {
			rte_ring_free(qp_ctx->order_ring);
			qp_ctx->order_ring = NULL;
		}

		if (!buff_size)
			return 0;

		if (snprintf(order_ring_name, RTE_CRYPTODEV_NAME_MAX_LEN,
			"%s_rb_%u_%u", RTE_STR(CRYPTODEV_NAME_SCHEDULER_PMD),
			dev->data->dev_id, qp_id) < 0) {
			CR_SCHED_LOG(ERR, "failed to create unique reorder buffer"
					"name");
			return -ENOMEM;
		}

		qp_ctx->order_ring = rte_ring_create(order_ring_name,
				buff_size, rte_socket_id(),
				RING_F_SP_ENQ | RING_F_SC_DEQ);
		if (!qp_ctx->order_ring) {
			CR_SCHED_LOG(ERR, "failed to create order ring");
			return -ENOMEM;
		}
	} else {
		if (qp_ctx->order_ring) {
			rte_ring_free(qp_ctx->order_ring);
			qp_ctx->order_ring = NULL;
		}
	}

	return 0;
}

/** Start device */
static int
scheduler_pmd_start(struct rte_cryptodev *dev)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;
	int ret;

	if (dev->data->dev_started)
		return 0;

	/* although scheduler_attach_init_slave presents multiple times,
	 * there will be only 1 meaningful execution.
	 */
	ret = scheduler_attach_init_slave(dev);
	if (ret < 0)
		return ret;

	for (i = 0; i < dev->data->nb_queue_pairs; i++) {
		ret = update_order_ring(dev, i);
		if (ret < 0) {
			CR_SCHED_LOG(ERR, "Failed to update reorder buffer");
			return ret;
		}
	}

	if (sched_ctx->mode == CDEV_SCHED_MODE_NOT_SET) {
		CR_SCHED_LOG(ERR, "Scheduler mode is not set");
		return -1;
	}

	if (!sched_ctx->nb_slaves) {
		CR_SCHED_LOG(ERR, "No slave in the scheduler");
		return -1;
	}

	RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.slave_attach, -ENOTSUP);

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;

		if ((*sched_ctx->ops.slave_attach)(dev, slave_dev_id) < 0) {
			CR_SCHED_LOG(ERR, "Failed to attach slave");
			return -ENOTSUP;
		}
	}

	RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.scheduler_start, -ENOTSUP);

	if ((*sched_ctx->ops.scheduler_start)(dev) < 0) {
		CR_SCHED_LOG(ERR, "Scheduler start failed");
		return -1;
	}

	/* start all slaves */
	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev *slave_dev =
				rte_cryptodev_pmd_get_dev(slave_dev_id);

		ret = (*slave_dev->dev_ops->dev_start)(slave_dev);
		if (ret < 0) {
			CR_SCHED_LOG(ERR, "Failed to start slave dev %u",
					slave_dev_id);
			return ret;
		}
	}

	return 0;
}

/** Stop device */
static void
scheduler_pmd_stop(struct rte_cryptodev *dev)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;

	if (!dev->data->dev_started)
		return;

	/* stop all slaves first */
	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev *slave_dev =
				rte_cryptodev_pmd_get_dev(slave_dev_id);

		(*slave_dev->dev_ops->dev_stop)(slave_dev);
	}

	if (*sched_ctx->ops.scheduler_stop)
		(*sched_ctx->ops.scheduler_stop)(dev);

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;

		if (*sched_ctx->ops.slave_detach)
			(*sched_ctx->ops.slave_detach)(dev, slave_dev_id);
	}
}

/** Close device */
static int
scheduler_pmd_close(struct rte_cryptodev *dev)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;
	int ret;

	/* the dev should be stopped before being closed */
	if (dev->data->dev_started)
		return -EBUSY;

	/* close all slaves first */
	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev *slave_dev =
				rte_cryptodev_pmd_get_dev(slave_dev_id);

		ret = (*slave_dev->dev_ops->dev_close)(slave_dev);
		if (ret < 0)
			return ret;
	}

	for (i = 0; i < dev->data->nb_queue_pairs; i++) {
		struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];

		if (qp_ctx->order_ring) {
			rte_ring_free(qp_ctx->order_ring);
			qp_ctx->order_ring = NULL;
		}

		if (qp_ctx->private_qp_ctx) {
			rte_free(qp_ctx->private_qp_ctx);
			qp_ctx->private_qp_ctx = NULL;
		}
	}

	if (sched_ctx->private_ctx) {
		rte_free(sched_ctx->private_ctx);
		sched_ctx->private_ctx = NULL;
	}

	if (sched_ctx->capabilities) {
		rte_free(sched_ctx->capabilities);
		sched_ctx->capabilities = NULL;
	}

	return 0;
}

/** Get device statistics */
static void
scheduler_pmd_stats_get(struct rte_cryptodev *dev,
	struct rte_cryptodev_stats *stats)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev *slave_dev =
				rte_cryptodev_pmd_get_dev(slave_dev_id);
		struct rte_cryptodev_stats slave_stats = {0};

		(*slave_dev->dev_ops->stats_get)(slave_dev, &slave_stats);

		stats->enqueued_count += slave_stats.enqueued_count;
		stats->dequeued_count += slave_stats.dequeued_count;

		stats->enqueue_err_count += slave_stats.enqueue_err_count;
		stats->dequeue_err_count += slave_stats.dequeue_err_count;
	}
}

/** Reset device statistics */
static void
scheduler_pmd_stats_reset(struct rte_cryptodev *dev)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev *slave_dev =
				rte_cryptodev_pmd_get_dev(slave_dev_id);

		(*slave_dev->dev_ops->stats_reset)(slave_dev);
	}
}

/** Get device info */
static void
scheduler_pmd_info_get(struct rte_cryptodev *dev,
		struct rte_cryptodev_info *dev_info)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t max_nb_sess = 0;
	uint16_t headroom_sz = 0;
	uint16_t tailroom_sz = 0;
	uint32_t i;

	if (!dev_info)
		return;

	/* although scheduler_attach_init_slave presents multiple times,
	 * there will be only 1 meaningful execution.
	 */
	scheduler_attach_init_slave(dev);

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev_info slave_info;

		rte_cryptodev_info_get(slave_dev_id, &slave_info);
		uint32_t dev_max_sess = slave_info.sym.max_nb_sessions;
		if (dev_max_sess != 0) {
			if (max_nb_sess == 0 ||	dev_max_sess < max_nb_sess)
				max_nb_sess = slave_info.sym.max_nb_sessions;
		}

		/* Get the max headroom requirement among slave PMDs */
		headroom_sz = slave_info.min_mbuf_headroom_req >
				headroom_sz ?
				slave_info.min_mbuf_headroom_req :
				headroom_sz;

		/* Get the max tailroom requirement among slave PMDs */
		tailroom_sz = slave_info.min_mbuf_tailroom_req >
				tailroom_sz ?
				slave_info.min_mbuf_tailroom_req :
				tailroom_sz;
	}

	dev_info->driver_id = dev->driver_id;
	dev_info->feature_flags = dev->feature_flags;
	dev_info->capabilities = sched_ctx->capabilities;
	dev_info->max_nb_queue_pairs = sched_ctx->max_nb_queue_pairs;
	dev_info->min_mbuf_headroom_req = headroom_sz;
	dev_info->min_mbuf_tailroom_req = tailroom_sz;
	dev_info->sym.max_nb_sessions = max_nb_sess;
}

/** Release queue pair */
static int
scheduler_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
{
	struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];

	if (!qp_ctx)
		return 0;

	if (qp_ctx->order_ring)
		rte_ring_free(qp_ctx->order_ring);
	if (qp_ctx->private_qp_ctx)
		rte_free(qp_ctx->private_qp_ctx);

	rte_free(qp_ctx);
	dev->data->queue_pairs[qp_id] = NULL;

	return 0;
}

/** Setup a queue pair */
static int
scheduler_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
	const struct rte_cryptodev_qp_conf *qp_conf, int socket_id)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	struct scheduler_qp_ctx *qp_ctx;
	char name[RTE_CRYPTODEV_NAME_MAX_LEN];
	uint32_t i;
	int ret;

	if (snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN,
			"CRYTO_SCHE PMD %u QP %u",
			dev->data->dev_id, qp_id) < 0) {
		CR_SCHED_LOG(ERR, "Failed to create unique queue pair name");
		return -EFAULT;
	}

	/* Free memory prior to re-allocation if needed. */
	if (dev->data->queue_pairs[qp_id] != NULL)
		scheduler_pmd_qp_release(dev, qp_id);

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_id = sched_ctx->slaves[i].dev_id;

		/*
		 * All slaves will share the same session mempool
		 * for session-less operations, so the objects
		 * must be big enough for all the drivers used.
		 */
		ret = rte_cryptodev_queue_pair_setup(slave_id, qp_id,
				qp_conf, socket_id);
		if (ret < 0)
			return ret;
	}

	/* Allocate the queue pair data structure. */
	qp_ctx = rte_zmalloc_socket(name, sizeof(*qp_ctx), RTE_CACHE_LINE_SIZE,
			socket_id);
	if (qp_ctx == NULL)
		return -ENOMEM;

	/* The actual available object number = nb_descriptors - 1 */
	qp_ctx->max_nb_objs = qp_conf->nb_descriptors - 1;

	dev->data->queue_pairs[qp_id] = qp_ctx;

	/* although scheduler_attach_init_slave presents multiple times,
	 * there will be only 1 meaningful execution.
	 */
	ret = scheduler_attach_init_slave(dev);
	if (ret < 0) {
		CR_SCHED_LOG(ERR, "Failed to attach slave");
		scheduler_pmd_qp_release(dev, qp_id);
		return ret;
	}

	if (*sched_ctx->ops.config_queue_pair) {
		if ((*sched_ctx->ops.config_queue_pair)(dev, qp_id) < 0) {
			CR_SCHED_LOG(ERR, "Unable to configure queue pair");
			return -1;
		}
	}

	return 0;
}

static uint32_t
scheduler_pmd_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint8_t i = 0;
	uint32_t max_priv_sess_size = 0;

	/* Check what is the maximum private session size for all slaves */
	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
		struct rte_cryptodev *dev = &rte_cryptodevs[slave_dev_id];
		uint32_t priv_sess_size = (*dev->dev_ops->sym_session_get_size)(dev);

		if (max_priv_sess_size < priv_sess_size)
			max_priv_sess_size = priv_sess_size;
	}

	return max_priv_sess_size;
}

static int
scheduler_pmd_sym_session_configure(struct rte_cryptodev *dev,
	struct rte_crypto_sym_xform *xform,
	struct rte_cryptodev_sym_session *sess,
	struct rte_mempool *mempool)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;
	int ret;

	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		struct scheduler_slave *slave = &sched_ctx->slaves[i];

		ret = rte_cryptodev_sym_session_init(slave->dev_id, sess,
					xform, mempool);
		if (ret < 0) {
			CR_SCHED_LOG(ERR, "unable to config sym session");
			return ret;
		}
	}

	return 0;
}

/** Clear the memory of session so it doesn't leave key material behind */
static void
scheduler_pmd_sym_session_clear(struct rte_cryptodev *dev,
		struct rte_cryptodev_sym_session *sess)
{
	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
	uint32_t i;

	/* Clear private data of slaves */
	for (i = 0; i < sched_ctx->nb_slaves; i++) {
		struct scheduler_slave *slave = &sched_ctx->slaves[i];

		rte_cryptodev_sym_session_clear(slave->dev_id, sess);
	}
}

static struct rte_cryptodev_ops scheduler_pmd_ops = {
		.dev_configure		= scheduler_pmd_config,
		.dev_start		= scheduler_pmd_start,
		.dev_stop		= scheduler_pmd_stop,
		.dev_close		= scheduler_pmd_close,

		.stats_get		= scheduler_pmd_stats_get,
		.stats_reset		= scheduler_pmd_stats_reset,

		.dev_infos_get		= scheduler_pmd_info_get,

		.queue_pair_setup	= scheduler_pmd_qp_setup,
		.queue_pair_release	= scheduler_pmd_qp_release,

		.sym_session_get_size	= scheduler_pmd_sym_session_get_size,
		.sym_session_configure	= scheduler_pmd_sym_session_configure,
		.sym_session_clear	= scheduler_pmd_sym_session_clear,
};

struct rte_cryptodev_ops *rte_crypto_scheduler_pmd_ops = &scheduler_pmd_ops;