1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016 Intel Corporation
7 #include <rte_common.h>
8 #include <rte_malloc.h>
9 #include <rte_cryptodev_pmd.h>
11 #include "aesni_gcm_pmd_private.h"
13 static const struct rte_cryptodev_capabilities aesni_gcm_pmd_capabilities[] = {
14 { /* AES GMAC (AUTH) */
15 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
17 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
19 .algo = RTE_CRYPTO_AUTH_AES_GMAC,
40 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
42 .xform_type = RTE_CRYPTO_SYM_XFORM_AEAD,
44 .algo = RTE_CRYPTO_AEAD_AES_GCM,
69 RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
72 /** Configure device */
74 aesni_gcm_pmd_config(__rte_unused struct rte_cryptodev *dev,
75 __rte_unused struct rte_cryptodev_config *config)
82 aesni_gcm_pmd_start(__rte_unused struct rte_cryptodev *dev)
89 aesni_gcm_pmd_stop(__rte_unused struct rte_cryptodev *dev)
95 aesni_gcm_pmd_close(__rte_unused struct rte_cryptodev *dev)
101 /** Get device statistics */
103 aesni_gcm_pmd_stats_get(struct rte_cryptodev *dev,
104 struct rte_cryptodev_stats *stats)
108 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
109 struct aesni_gcm_qp *qp = dev->data->queue_pairs[qp_id];
111 stats->enqueued_count += qp->qp_stats.enqueued_count;
112 stats->dequeued_count += qp->qp_stats.dequeued_count;
114 stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
115 stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
119 /** Reset device statistics */
121 aesni_gcm_pmd_stats_reset(struct rte_cryptodev *dev)
125 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
126 struct aesni_gcm_qp *qp = dev->data->queue_pairs[qp_id];
128 memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
133 /** Get device info */
135 aesni_gcm_pmd_info_get(struct rte_cryptodev *dev,
136 struct rte_cryptodev_info *dev_info)
138 struct aesni_gcm_private *internals = dev->data->dev_private;
140 if (dev_info != NULL) {
141 dev_info->driver_id = dev->driver_id;
142 dev_info->feature_flags = dev->feature_flags;
143 dev_info->capabilities = aesni_gcm_pmd_capabilities;
145 dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs;
146 dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
150 /** Release queue pair */
152 aesni_gcm_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
154 if (dev->data->queue_pairs[qp_id] != NULL) {
155 rte_free(dev->data->queue_pairs[qp_id]);
156 dev->data->queue_pairs[qp_id] = NULL;
161 /** set a unique name for the queue pair based on it's name, dev_id and qp_id */
163 aesni_gcm_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
164 struct aesni_gcm_qp *qp)
166 unsigned n = snprintf(qp->name, sizeof(qp->name),
167 "aesni_gcm_pmd_%u_qp_%u",
168 dev->data->dev_id, qp->id);
170 if (n >= sizeof(qp->name))
176 /** Create a ring to place process packets on */
177 static struct rte_ring *
178 aesni_gcm_pmd_qp_create_processed_pkts_ring(struct aesni_gcm_qp *qp,
179 unsigned ring_size, int socket_id)
183 r = rte_ring_lookup(qp->name);
185 if (rte_ring_get_size(r) >= ring_size) {
186 AESNI_GCM_LOG(INFO, "Reusing existing ring %s for processed"
187 " packets", qp->name);
190 AESNI_GCM_LOG(ERR, "Unable to reuse existing ring %s for processed"
191 " packets", qp->name);
195 return rte_ring_create(qp->name, ring_size, socket_id,
196 RING_F_SP_ENQ | RING_F_SC_DEQ);
199 /** Setup a queue pair */
201 aesni_gcm_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
202 const struct rte_cryptodev_qp_conf *qp_conf,
203 int socket_id, struct rte_mempool *session_pool)
205 struct aesni_gcm_qp *qp = NULL;
206 struct aesni_gcm_private *internals = dev->data->dev_private;
208 /* Free memory prior to re-allocation if needed. */
209 if (dev->data->queue_pairs[qp_id] != NULL)
210 aesni_gcm_pmd_qp_release(dev, qp_id);
212 /* Allocate the queue pair data structure. */
213 qp = rte_zmalloc_socket("AES-NI PMD Queue Pair", sizeof(*qp),
214 RTE_CACHE_LINE_SIZE, socket_id);
219 dev->data->queue_pairs[qp_id] = qp;
221 if (aesni_gcm_pmd_qp_set_unique_name(dev, qp))
222 goto qp_setup_cleanup;
224 qp->ops = (const struct aesni_gcm_ops *)gcm_ops[internals->vector_mode];
226 qp->processed_pkts = aesni_gcm_pmd_qp_create_processed_pkts_ring(qp,
227 qp_conf->nb_descriptors, socket_id);
228 if (qp->processed_pkts == NULL)
229 goto qp_setup_cleanup;
231 qp->sess_mp = session_pool;
233 memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
244 /** Start queue pair */
246 aesni_gcm_pmd_qp_start(__rte_unused struct rte_cryptodev *dev,
247 __rte_unused uint16_t queue_pair_id)
252 /** Stop queue pair */
254 aesni_gcm_pmd_qp_stop(__rte_unused struct rte_cryptodev *dev,
255 __rte_unused uint16_t queue_pair_id)
260 /** Return the number of allocated queue pairs */
262 aesni_gcm_pmd_qp_count(struct rte_cryptodev *dev)
264 return dev->data->nb_queue_pairs;
267 /** Returns the size of the aesni gcm session structure */
269 aesni_gcm_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
271 return sizeof(struct aesni_gcm_session);
274 /** Configure a aesni gcm session from a crypto xform chain */
276 aesni_gcm_pmd_session_configure(struct rte_cryptodev *dev __rte_unused,
277 struct rte_crypto_sym_xform *xform,
278 struct rte_cryptodev_sym_session *sess,
279 struct rte_mempool *mempool)
281 void *sess_private_data;
283 struct aesni_gcm_private *internals = dev->data->dev_private;
285 if (unlikely(sess == NULL)) {
286 AESNI_GCM_LOG(ERR, "invalid session struct");
290 if (rte_mempool_get(mempool, &sess_private_data)) {
292 "Couldn't get object from session mempool");
295 ret = aesni_gcm_set_session_parameters(gcm_ops[internals->vector_mode],
296 sess_private_data, xform);
298 AESNI_GCM_LOG(ERR, "failed configure session parameters");
300 /* Return session to mempool */
301 rte_mempool_put(mempool, sess_private_data);
305 set_session_private_data(sess, dev->driver_id,
311 /** Clear the memory of session so it doesn't leave key material behind */
313 aesni_gcm_pmd_session_clear(struct rte_cryptodev *dev,
314 struct rte_cryptodev_sym_session *sess)
316 uint8_t index = dev->driver_id;
317 void *sess_priv = get_session_private_data(sess, index);
319 /* Zero out the whole structure */
321 memset(sess_priv, 0, sizeof(struct aesni_gcm_session));
322 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
323 set_session_private_data(sess, index, NULL);
324 rte_mempool_put(sess_mp, sess_priv);
328 struct rte_cryptodev_ops aesni_gcm_pmd_ops = {
329 .dev_configure = aesni_gcm_pmd_config,
330 .dev_start = aesni_gcm_pmd_start,
331 .dev_stop = aesni_gcm_pmd_stop,
332 .dev_close = aesni_gcm_pmd_close,
334 .stats_get = aesni_gcm_pmd_stats_get,
335 .stats_reset = aesni_gcm_pmd_stats_reset,
337 .dev_infos_get = aesni_gcm_pmd_info_get,
339 .queue_pair_setup = aesni_gcm_pmd_qp_setup,
340 .queue_pair_release = aesni_gcm_pmd_qp_release,
341 .queue_pair_start = aesni_gcm_pmd_qp_start,
342 .queue_pair_stop = aesni_gcm_pmd_qp_stop,
343 .queue_pair_count = aesni_gcm_pmd_qp_count,
345 .session_get_size = aesni_gcm_pmd_session_get_size,
346 .session_configure = aesni_gcm_pmd_session_configure,
347 .session_clear = aesni_gcm_pmd_session_clear
350 struct rte_cryptodev_ops *rte_aesni_gcm_pmd_ops = &aesni_gcm_pmd_ops;