summaryrefslogtreecommitdiff
path: root/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c
blob: 2362006f21cbcd612cadbea9b08e7cda2e715f4b (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
/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2016 Intel Corporation. All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <string.h>

#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_cryptodev_pmd.h>

#include "aesni_gcm_pmd_private.h"

static const struct rte_cryptodev_capabilities aesni_gcm_pmd_capabilities[] = {
	{	/* AES GMAC (AUTH) */
		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
		{.sym = {
			.xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
			{.auth = {
				.algo = RTE_CRYPTO_AUTH_AES_GMAC,
				.block_size = 16,
				.key_size = {
					.min = 16,
					.max = 32,
					.increment = 16
				},
				.digest_size = {
					.min = 8,
					.max = 16,
					.increment = 4
				},
				.aad_size = {
					.min = 0,
					.max = 65535,
					.increment = 1
				}
			}, }
		}, }
	},
	{	/* AES GCM (AUTH) */
		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
		{.sym = {
			.xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
			{.auth = {
				.algo = RTE_CRYPTO_AUTH_AES_GCM,
				.block_size = 16,
				.key_size = {
					.min = 16,
					.max = 32,
					.increment = 16
				},
				.digest_size = {
					.min = 8,
					.max = 16,
					.increment = 4
				},
				.aad_size = {
					.min = 0,
					.max = 65535,
					.increment = 1
				}
			}, }
		}, }
	},
	{	/* AES GCM (CIPHER) */
		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
		{.sym = {
			.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
			{.cipher = {
				.algo = RTE_CRYPTO_CIPHER_AES_GCM,
				.block_size = 16,
				.key_size = {
					.min = 16,
					.max = 32,
					.increment = 16
				},
				.iv_size = {
					.min = 12,
					.max = 12,
					.increment = 0
				}
			}, }
		}, }
	},
	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
};

/** Configure device */
static int
aesni_gcm_pmd_config(__rte_unused struct rte_cryptodev *dev)
{
	return 0;
}

/** Start device */
static int
aesni_gcm_pmd_start(__rte_unused struct rte_cryptodev *dev)
{
	return 0;
}

/** Stop device */
static void
aesni_gcm_pmd_stop(__rte_unused struct rte_cryptodev *dev)
{
}

/** Close device */
static int
aesni_gcm_pmd_close(__rte_unused struct rte_cryptodev *dev)
{
	return 0;
}


/** Get device statistics */
static void
aesni_gcm_pmd_stats_get(struct rte_cryptodev *dev,
		struct rte_cryptodev_stats *stats)
{
	int qp_id;

	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
		struct aesni_gcm_qp *qp = dev->data->queue_pairs[qp_id];

		stats->enqueued_count += qp->qp_stats.enqueued_count;
		stats->dequeued_count += qp->qp_stats.dequeued_count;

		stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
		stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
	}
}

/** Reset device statistics */
static void
aesni_gcm_pmd_stats_reset(struct rte_cryptodev *dev)
{
	int qp_id;

	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
		struct aesni_gcm_qp *qp = dev->data->queue_pairs[qp_id];

		memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
	}
}


/** Get device info */
static void
aesni_gcm_pmd_info_get(struct rte_cryptodev *dev,
		struct rte_cryptodev_info *dev_info)
{
	struct aesni_gcm_private *internals = dev->data->dev_private;

	if (dev_info != NULL) {
		dev_info->dev_type = dev->dev_type;
                dev_info->feature_flags = dev->feature_flags;
                dev_info->capabilities = aesni_gcm_pmd_capabilities;

		dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs;
		dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
	}
}

/** Release queue pair */
static int
aesni_gcm_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
{
	if (dev->data->queue_pairs[qp_id] != NULL) {
		rte_free(dev->data->queue_pairs[qp_id]);
		dev->data->queue_pairs[qp_id] = NULL;
	}
	return 0;
}

/** set a unique name for the queue pair based on it's name, dev_id and qp_id */
static int
aesni_gcm_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
		struct aesni_gcm_qp *qp)
{
	unsigned n = snprintf(qp->name, sizeof(qp->name),
			"aesni_gcm_pmd_%u_qp_%u",
			dev->data->dev_id, qp->id);

	if (n > sizeof(qp->name))
		return -1;

	return 0;
}

/** Create a ring to place process packets on */
static struct rte_ring *
aesni_gcm_pmd_qp_create_processed_pkts_ring(struct aesni_gcm_qp *qp,
		unsigned ring_size, int socket_id)
{
	struct rte_ring *r;

	r = rte_ring_lookup(qp->name);
	if (r) {
		if (r->prod.size >= ring_size) {
			GCM_LOG_INFO("Reusing existing ring %s for processed"
					" packets", qp->name);
			return r;
		}

		GCM_LOG_ERR("Unable to reuse existing ring %s for processed"
				" packets", qp->name);
		return NULL;
	}

	return rte_ring_create(qp->name, ring_size, socket_id,
			RING_F_SP_ENQ | RING_F_SC_DEQ);
}

/** Setup a queue pair */
static int
aesni_gcm_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
		const struct rte_cryptodev_qp_conf *qp_conf,
		 int socket_id)
{
	struct aesni_gcm_qp *qp = NULL;

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

	/* Allocate the queue pair data structure. */
	qp = rte_zmalloc_socket("AES-NI PMD Queue Pair", sizeof(*qp),
					RTE_CACHE_LINE_SIZE, socket_id);
	if (qp == NULL)
		return (-ENOMEM);

	qp->id = qp_id;
	dev->data->queue_pairs[qp_id] = qp;

	if (aesni_gcm_pmd_qp_set_unique_name(dev, qp))
		goto qp_setup_cleanup;

	qp->processed_pkts = aesni_gcm_pmd_qp_create_processed_pkts_ring(qp,
			qp_conf->nb_descriptors, socket_id);
	if (qp->processed_pkts == NULL)
		goto qp_setup_cleanup;

	qp->sess_mp = dev->data->session_pool;

	memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));

	return 0;

qp_setup_cleanup:
	if (qp)
		rte_free(qp);

	return -1;
}

/** Start queue pair */
static int
aesni_gcm_pmd_qp_start(__rte_unused struct rte_cryptodev *dev,
		__rte_unused uint16_t queue_pair_id)
{
	return -ENOTSUP;
}

/** Stop queue pair */
static int
aesni_gcm_pmd_qp_stop(__rte_unused struct rte_cryptodev *dev,
		__rte_unused uint16_t queue_pair_id)
{
	return -ENOTSUP;
}

/** Return the number of allocated queue pairs */
static uint32_t
aesni_gcm_pmd_qp_count(struct rte_cryptodev *dev)
{
	return dev->data->nb_queue_pairs;
}

/** Returns the size of the aesni gcm session structure */
static unsigned
aesni_gcm_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
{
	return sizeof(struct aesni_gcm_session);
}

/** Configure a aesni gcm session from a crypto xform chain */
static void *
aesni_gcm_pmd_session_configure(struct rte_cryptodev *dev __rte_unused,
		struct rte_crypto_sym_xform *xform,	void *sess)
{
	if (unlikely(sess == NULL)) {
		GCM_LOG_ERR("invalid session struct");
		return NULL;
	}

	if (aesni_gcm_set_session_parameters(sess, xform) != 0) {
		GCM_LOG_ERR("failed configure session parameters");
		return NULL;
	}

	return sess;
}

/** Clear the memory of session so it doesn't leave key material behind */
static void
aesni_gcm_pmd_session_clear(struct rte_cryptodev *dev __rte_unused, void *sess)
{
	if (sess)
		memset(sess, 0, sizeof(struct aesni_gcm_session));
}

struct rte_cryptodev_ops aesni_gcm_pmd_ops = {
		.dev_configure		= aesni_gcm_pmd_config,
		.dev_start		= aesni_gcm_pmd_start,
		.dev_stop		= aesni_gcm_pmd_stop,
		.dev_close		= aesni_gcm_pmd_close,

		.stats_get		= aesni_gcm_pmd_stats_get,
		.stats_reset		= aesni_gcm_pmd_stats_reset,

		.dev_infos_get		= aesni_gcm_pmd_info_get,

		.queue_pair_setup	= aesni_gcm_pmd_qp_setup,
		.queue_pair_release	= aesni_gcm_pmd_qp_release,
		.queue_pair_start	= aesni_gcm_pmd_qp_start,
		.queue_pair_stop	= aesni_gcm_pmd_qp_stop,
		.queue_pair_count	= aesni_gcm_pmd_qp_count,

		.session_get_size	= aesni_gcm_pmd_session_get_size,
		.session_configure	= aesni_gcm_pmd_session_configure,
		.session_clear		= aesni_gcm_pmd_session_clear
};

struct rte_cryptodev_ops *rte_aesni_gcm_pmd_ops = &aesni_gcm_pmd_ops;