[ceph.git] / ceph / src / seastar / dpdk / drivers / crypto / snow3g / rte_snow3g_pmd_ops.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2016-2018 Intel Corporation
 */

#include <string.h>

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

#include "rte_snow3g_pmd_private.h"

static const struct rte_cryptodev_capabilities snow3g_pmd_capabilities[] = {
	{	/* SNOW 3G (UIA2) */
		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
		{.sym = {
			.xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
			{.auth = {
				.algo = RTE_CRYPTO_AUTH_SNOW3G_UIA2,
				.block_size = 16,
				.key_size = {
					.min = 16,
					.max = 16,
					.increment = 0
				},
				.digest_size = {
					.min = 4,
					.max = 4,
					.increment = 0
				},
				.iv_size = {
					.min = 16,
					.max = 16,
					.increment = 0
				}
			}, }
		}, }
	},
	{	/* SNOW 3G (UEA2) */
		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
		{.sym = {
			.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
			{.cipher = {
				.algo = RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
				.block_size = 16,
				.key_size = {
					.min = 16,
					.max = 16,
					.increment = 0
				},
				.iv_size = {
					.min = 16,
					.max = 16,
					.increment = 0
				}
			}, }
		}, }
	},
	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
};

/** Configure device */
static int
snow3g_pmd_config(__rte_unused struct rte_cryptodev *dev,
		__rte_unused struct rte_cryptodev_config *config)
{
	return 0;
}

/** Start device */
static int
snow3g_pmd_start(__rte_unused struct rte_cryptodev *dev)
{
	return 0;
}

/** Stop device */
static void
snow3g_pmd_stop(__rte_unused struct rte_cryptodev *dev)
{
}

/** Close device */
static int
snow3g_pmd_close(__rte_unused struct rte_cryptodev *dev)
{
	return 0;
}


/** Get device statistics */
static void
snow3g_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 snow3g_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
snow3g_pmd_stats_reset(struct rte_cryptodev *dev)
{
	int qp_id;

	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
		struct snow3g_qp *qp = dev->data->queue_pairs[qp_id];

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


/** Get device info */
static void
snow3g_pmd_info_get(struct rte_cryptodev *dev,
		struct rte_cryptodev_info *dev_info)
{
	struct snow3g_private *internals = dev->data->dev_private;

	if (dev_info != NULL) {
		dev_info->driver_id = dev->driver_id;
		dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs;
		/* No limit of number of sessions */
		dev_info->sym.max_nb_sessions = 0;
		dev_info->feature_flags = dev->feature_flags;
		dev_info->capabilities = snow3g_pmd_capabilities;
	}
}

/** Release queue pair */
static int
snow3g_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
{
	if (dev->data->queue_pairs[qp_id] != NULL) {
		struct snow3g_qp *qp = dev->data->queue_pairs[qp_id];

		if (qp->processed_ops)
			rte_ring_free(qp->processed_ops);

		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 its name, dev_id and qp_id */
static int
snow3g_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
		struct snow3g_qp *qp)
{
	unsigned n = snprintf(qp->name, sizeof(qp->name),
			"snow3g_pmd_%u_qp_%u",
			dev->data->dev_id, qp->id);

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

	return 0;
}

/** Create a ring to place processed ops on */
static struct rte_ring *
snow3g_pmd_qp_create_processed_ops_ring(struct snow3g_qp *qp,
		unsigned ring_size, int socket_id)
{
	struct rte_ring *r;

	r = rte_ring_lookup(qp->name);
	if (r) {
		if (rte_ring_get_size(r) >= ring_size) {
			SNOW3G_LOG(INFO, "Reusing existing ring %s"
					" for processed packets",
					 qp->name);
			return r;
		}

		SNOW3G_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
snow3g_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
		const struct rte_cryptodev_qp_conf *qp_conf,
		int socket_id)
{
	struct snow3g_qp *qp = NULL;

	/* Free memory prior to re-allocation if needed. */
	if (dev->data->queue_pairs[qp_id] != NULL)
		snow3g_pmd_qp_release(dev, qp_id);

	/* Allocate the queue pair data structure. */
	qp = rte_zmalloc_socket("SNOW 3G 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 (snow3g_pmd_qp_set_unique_name(dev, qp))
		goto qp_setup_cleanup;

	qp->processed_ops = snow3g_pmd_qp_create_processed_ops_ring(qp,
			qp_conf->nb_descriptors, socket_id);
	if (qp->processed_ops == NULL)
		goto qp_setup_cleanup;

	qp->sess_mp = qp_conf->mp_session;
	qp->sess_mp_priv = qp_conf->mp_session_private;

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

	return 0;

qp_setup_cleanup:
	if (qp)
		rte_free(qp);

	return -1;
}

/** Return the number of allocated queue pairs */
static uint32_t
snow3g_pmd_qp_count(struct rte_cryptodev *dev)
{
	return dev->data->nb_queue_pairs;
}

/** Returns the size of the SNOW 3G session structure */
static unsigned
snow3g_pmd_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
{
	return sizeof(struct snow3g_session);
}

/** Configure a SNOW 3G session from a crypto xform chain */
static int
snow3g_pmd_sym_session_configure(struct rte_cryptodev *dev __rte_unused,
		struct rte_crypto_sym_xform *xform,
		struct rte_cryptodev_sym_session *sess,
		struct rte_mempool *mempool)
{
	void *sess_private_data;
	int ret;

	if (unlikely(sess == NULL)) {
		SNOW3G_LOG(ERR, "invalid session struct");
		return -EINVAL;
	}

	if (rte_mempool_get(mempool, &sess_private_data)) {
		SNOW3G_LOG(ERR,
			"Couldn't get object from session mempool");
		return -ENOMEM;
	}

	ret = snow3g_set_session_parameters(sess_private_data, xform);
	if (ret != 0) {
		SNOW3G_LOG(ERR, "failed configure session parameters");

		/* Return session to mempool */
		rte_mempool_put(mempool, sess_private_data);
		return ret;
	}

	set_sym_session_private_data(sess, dev->driver_id,
		sess_private_data);

	return 0;
}

/** Clear the memory of session so it doesn't leave key material behind */
static void
snow3g_pmd_sym_session_clear(struct rte_cryptodev *dev,
		struct rte_cryptodev_sym_session *sess)
{
	uint8_t index = dev->driver_id;
	void *sess_priv = get_sym_session_private_data(sess, index);

	/* Zero out the whole structure */
	if (sess_priv) {
		memset(sess_priv, 0, sizeof(struct snow3g_session));
		struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
		set_sym_session_private_data(sess, index, NULL);
		rte_mempool_put(sess_mp, sess_priv);
	}
}

struct rte_cryptodev_ops snow3g_pmd_ops = {
		.dev_configure      = snow3g_pmd_config,
		.dev_start          = snow3g_pmd_start,
		.dev_stop           = snow3g_pmd_stop,
		.dev_close          = snow3g_pmd_close,

		.stats_get          = snow3g_pmd_stats_get,
		.stats_reset        = snow3g_pmd_stats_reset,

		.dev_infos_get      = snow3g_pmd_info_get,

		.queue_pair_setup   = snow3g_pmd_qp_setup,
		.queue_pair_release = snow3g_pmd_qp_release,
		.queue_pair_count   = snow3g_pmd_qp_count,

		.sym_session_get_size   = snow3g_pmd_sym_session_get_size,
		.sym_session_configure  = snow3g_pmd_sym_session_configure,
		.sym_session_clear      = snow3g_pmd_sym_session_clear
};

struct rte_cryptodev_ops *rte_snow3g_pmd_ops = &snow3g_pmd_ops;
Commit	Line	Data
9f95a23c TL	1	/* SPDX-License-Identifier: BSD-3-Clause
9f95a23c TL	2	* Copyright(c) 2016-2018 Intel Corporation
7c673cae FG	3	*/
	4
	5	#include <string.h>
	6
	7	#include <rte_common.h>
	8	#include <rte_malloc.h>
	9	#include <rte_cryptodev_pmd.h>
	10
	11	#include "rte_snow3g_pmd_private.h"
	12
	13	static const struct rte_cryptodev_capabilities snow3g_pmd_capabilities[] = {
	14	{ /* SNOW 3G (UIA2) */
	15	.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
	16	{.sym = {
	17	.xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
	18	{.auth = {
	19	.algo = RTE_CRYPTO_AUTH_SNOW3G_UIA2,
	20	.block_size = 16,
	21	.key_size = {
	22	.min = 16,
	23	.max = 16,
	24	.increment = 0
	25	},
	26	.digest_size = {
	27	.min = 4,
	28	.max = 4,
	29	.increment = 0
	30	},
9f95a23c	31	.iv_size = {
7c673cae FG	32	.min = 16,
	33	.max = 16,
	34	.increment = 0
	35	}
	36	}, }
	37	}, }
	38	},
	39	{ /* SNOW 3G (UEA2) */
	40	.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
	41	{.sym = {
	42	.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
	43	{.cipher = {
	44	.algo = RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
	45	.block_size = 16,
	46	.key_size = {
	47	.min = 16,
	48	.max = 16,
	49	.increment = 0
	50	},
	51	.iv_size = {
	52	.min = 16,
	53	.max = 16,
	54	.increment = 0
	55	}
	56	}, }
	57	}, }
	58	},
	59	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
	60	};
	61
	62	/** Configure device */
	63	static int
11fdf7f2 TL	64	snow3g_pmd_config(__rte_unused struct rte_cryptodev *dev,
11fdf7f2 TL	65	__rte_unused struct rte_cryptodev_config *config)
7c673cae FG	66	{
	67	return 0;
	68	}
	69
	70	/** Start device */
	71	static int
	72	snow3g_pmd_start(__rte_unused struct rte_cryptodev *dev)
	73	{
	74	return 0;
	75	}
	76
	77	/** Stop device */
	78	static void
	79	snow3g_pmd_stop(__rte_unused struct rte_cryptodev *dev)
	80	{
	81	}
	82
	83	/** Close device */
	84	static int
	85	snow3g_pmd_close(__rte_unused struct rte_cryptodev *dev)
	86	{
	87	return 0;
	88	}
	89
	90
	91	/** Get device statistics */
	92	static void
	93	snow3g_pmd_stats_get(struct rte_cryptodev *dev,
	94	struct rte_cryptodev_stats *stats)
	95	{
	96	int qp_id;
	97
	98	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
	99	struct snow3g_qp *qp = dev->data->queue_pairs[qp_id];
	100
	101	stats->enqueued_count += qp->qp_stats.enqueued_count;
	102	stats->dequeued_count += qp->qp_stats.dequeued_count;
	103
	104	stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
	105	stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
	106	}
	107	}
	108
	109	/** Reset device statistics */
	110	static void
	111	snow3g_pmd_stats_reset(struct rte_cryptodev *dev)
	112	{
	113	int qp_id;
	114
	115	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
	116	struct snow3g_qp *qp = dev->data->queue_pairs[qp_id];
	117
	118	memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
	119	}
	120	}
	121
	122
	123	/** Get device info */
	124	static void
	125	snow3g_pmd_info_get(struct rte_cryptodev *dev,
	126	struct rte_cryptodev_info *dev_info)
	127	{
	128	struct snow3g_private *internals = dev->data->dev_private;
	129
130	if (dev_info != NULL) {
9f95a23c	131	dev_info->driver_id = dev->driver_id;
7c673cae	132	dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs;
9f95a23c TL	133	/* No limit of number of sessions */
9f95a23c TL	134	dev_info->sym.max_nb_sessions = 0;
7c673cae FG	135	dev_info->feature_flags = dev->feature_flags;
	136	dev_info->capabilities = snow3g_pmd_capabilities;
	137	}
	138	}
	139
	140	/** Release queue pair */
	141	static int
	142	snow3g_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
	143	{
	144	if (dev->data->queue_pairs[qp_id] != NULL) {
9f95a23c TL	145	struct snow3g_qp *qp = dev->data->queue_pairs[qp_id];
	146
	147	if (qp->processed_ops)
	148	rte_ring_free(qp->processed_ops);
	149
7c673cae FG	150	rte_free(dev->data->queue_pairs[qp_id]);
	151	dev->data->queue_pairs[qp_id] = NULL;
	152	}
	153	return 0;
	154	}
	155
	156	/** set a unique name for the queue pair based on its name, dev_id and qp_id */
	157	static int
	158	snow3g_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
	159	struct snow3g_qp *qp)
	160	{
	161	unsigned n = snprintf(qp->name, sizeof(qp->name),
	162	"snow3g_pmd_%u_qp_%u",
	163	dev->data->dev_id, qp->id);
	164
9f95a23c	165	if (n >= sizeof(qp->name))
7c673cae FG	166	return -1;
	167
	168	return 0;
	169	}
	170
	171	/** Create a ring to place processed ops on */
	172	static struct rte_ring *
	173	snow3g_pmd_qp_create_processed_ops_ring(struct snow3g_qp *qp,
	174	unsigned ring_size, int socket_id)
	175	{
	176	struct rte_ring *r;
	177
	178	r = rte_ring_lookup(qp->name);
	179	if (r) {
11fdf7f2	180	if (rte_ring_get_size(r) >= ring_size) {
9f95a23c	181	SNOW3G_LOG(INFO, "Reusing existing ring %s"
7c673cae FG	182	" for processed packets",
	183	qp->name);
	184	return r;
	185	}
	186
9f95a23c	187	SNOW3G_LOG(ERR, "Unable to reuse existing ring %s"
7c673cae FG	188	" for processed packets",
	189	qp->name);
	190	return NULL;
	191	}
	192
	193	return rte_ring_create(qp->name, ring_size, socket_id,
	194	RING_F_SP_ENQ \| RING_F_SC_DEQ);
	195	}
	196
	197	/** Setup a queue pair */
	198	static int
	199	snow3g_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
	200	const struct rte_cryptodev_qp_conf *qp_conf,
9f95a23c	201	int socket_id)
7c673cae FG	202	{
	203	struct snow3g_qp *qp = NULL;
	204
	205	/* Free memory prior to re-allocation if needed. */
	206	if (dev->data->queue_pairs[qp_id] != NULL)
	207	snow3g_pmd_qp_release(dev, qp_id);
	208
	209	/* Allocate the queue pair data structure. */
	210	qp = rte_zmalloc_socket("SNOW 3G PMD Queue Pair", sizeof(*qp),
	211	RTE_CACHE_LINE_SIZE, socket_id);
	212	if (qp == NULL)
	213	return (-ENOMEM);
	214
	215	qp->id = qp_id;
	216	dev->data->queue_pairs[qp_id] = qp;
	217
	218	if (snow3g_pmd_qp_set_unique_name(dev, qp))
	219	goto qp_setup_cleanup;
	220
	221	qp->processed_ops = snow3g_pmd_qp_create_processed_ops_ring(qp,
	222	qp_conf->nb_descriptors, socket_id);
	223	if (qp->processed_ops == NULL)
	224	goto qp_setup_cleanup;
	225
9f95a23c TL	226	qp->sess_mp = qp_conf->mp_session;
9f95a23c TL	227	qp->sess_mp_priv = qp_conf->mp_session_private;
7c673cae FG	228
	229	memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
	230
	231	return 0;
	232
	233	qp_setup_cleanup:
	234	if (qp)
	235	rte_free(qp);
	236
	237	return -1;
	238	}
	239
7c673cae FG	240	/** Return the number of allocated queue pairs */
	241	static uint32_t
	242	snow3g_pmd_qp_count(struct rte_cryptodev *dev)
	243	{
	244	return dev->data->nb_queue_pairs;
	245	}
	246
	247	/** Returns the size of the SNOW 3G session structure */
	248	static unsigned
9f95a23c	249	snow3g_pmd_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
7c673cae FG	250	{
	251	return sizeof(struct snow3g_session);
	252	}
	253
	254	/** Configure a SNOW 3G session from a crypto xform chain */
9f95a23c TL	255	static int
	256	snow3g_pmd_sym_session_configure(struct rte_cryptodev *dev __rte_unused,
	257	struct rte_crypto_sym_xform *xform,
	258	struct rte_cryptodev_sym_session *sess,
	259	struct rte_mempool *mempool)
7c673cae	260	{
9f95a23c TL	261	void *sess_private_data;
	262	int ret;
	263
7c673cae	264	if (unlikely(sess == NULL)) {
9f95a23c TL	265	SNOW3G_LOG(ERR, "invalid session struct");
9f95a23c TL	266	return -EINVAL;
7c673cae FG	267	}
7c673cae FG	268
9f95a23c TL	269	if (rte_mempool_get(mempool, &sess_private_data)) {
	270	SNOW3G_LOG(ERR,
	271	"Couldn't get object from session mempool");
	272	return -ENOMEM;
7c673cae FG	273	}
7c673cae FG	274
9f95a23c TL	275	ret = snow3g_set_session_parameters(sess_private_data, xform);
	276	if (ret != 0) {
	277	SNOW3G_LOG(ERR, "failed configure session parameters");
	278
	279	/* Return session to mempool */
	280	rte_mempool_put(mempool, sess_private_data);
	281	return ret;
	282	}
	283
	284	set_sym_session_private_data(sess, dev->driver_id,
	285	sess_private_data);
	286
	287	return 0;
7c673cae FG	288	}
	289
	290	/** Clear the memory of session so it doesn't leave key material behind */
	291	static void
9f95a23c TL	292	snow3g_pmd_sym_session_clear(struct rte_cryptodev *dev,
9f95a23c TL	293	struct rte_cryptodev_sym_session *sess)
7c673cae	294	{
9f95a23c TL	295	uint8_t index = dev->driver_id;
	296	void *sess_priv = get_sym_session_private_data(sess, index);
	297
	298	/* Zero out the whole structure */
	299	if (sess_priv) {
	300	memset(sess_priv, 0, sizeof(struct snow3g_session));
	301	struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
	302	set_sym_session_private_data(sess, index, NULL);
	303	rte_mempool_put(sess_mp, sess_priv);
	304	}
7c673cae FG	305	}
	306
	307	struct rte_cryptodev_ops snow3g_pmd_ops = {
	308	.dev_configure = snow3g_pmd_config,
	309	.dev_start = snow3g_pmd_start,
	310	.dev_stop = snow3g_pmd_stop,
	311	.dev_close = snow3g_pmd_close,
	312
	313	.stats_get = snow3g_pmd_stats_get,
	314	.stats_reset = snow3g_pmd_stats_reset,
	315
	316	.dev_infos_get = snow3g_pmd_info_get,
	317
	318	.queue_pair_setup = snow3g_pmd_qp_setup,
	319	.queue_pair_release = snow3g_pmd_qp_release,
7c673cae FG	320	.queue_pair_count = snow3g_pmd_qp_count,
7c673cae FG	321
9f95a23c TL	322	.sym_session_get_size = snow3g_pmd_sym_session_get_size,
	323	.sym_session_configure = snow3g_pmd_sym_session_configure,
	324	.sym_session_clear = snow3g_pmd_sym_session_clear
7c673cae FG	325	};
	326
	327	struct rte_cryptodev_ops *rte_snow3g_pmd_ops = &snow3g_pmd_ops;