1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2017 Intel Corporation
7 #include <rte_common.h>
8 #include <rte_malloc.h>
9 #include <cryptodev_pmd.h>
11 #include "null_crypto_pmd_private.h"
13 static const struct rte_cryptodev_capabilities null_crypto_pmd_capabilities[] = {
15 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
17 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
19 .algo = RTE_CRYPTO_AUTH_NULL,
36 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
38 .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
40 .algo = RTE_CRYPTO_CIPHER_NULL,
51 RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
54 /** Configure device */
56 null_crypto_pmd_config(__rte_unused struct rte_cryptodev *dev,
57 __rte_unused struct rte_cryptodev_config *config)
64 null_crypto_pmd_start(__rte_unused struct rte_cryptodev *dev)
71 null_crypto_pmd_stop(__rte_unused struct rte_cryptodev *dev)
77 null_crypto_pmd_close(__rte_unused struct rte_cryptodev *dev)
82 /** Get device statistics */
84 null_crypto_pmd_stats_get(struct rte_cryptodev *dev,
85 struct rte_cryptodev_stats *stats)
89 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
90 struct null_crypto_qp *qp = dev->data->queue_pairs[qp_id];
92 stats->enqueued_count += qp->qp_stats.enqueued_count;
93 stats->dequeued_count += qp->qp_stats.dequeued_count;
95 stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
96 stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
100 /** Reset device statistics */
102 null_crypto_pmd_stats_reset(struct rte_cryptodev *dev)
106 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
107 struct null_crypto_qp *qp = dev->data->queue_pairs[qp_id];
109 memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
114 /** Get device info */
116 null_crypto_pmd_info_get(struct rte_cryptodev *dev,
117 struct rte_cryptodev_info *dev_info)
119 struct null_crypto_private *internals = dev->data->dev_private;
121 if (dev_info != NULL) {
122 dev_info->driver_id = dev->driver_id;
123 dev_info->max_nb_queue_pairs = internals->max_nb_qpairs;
124 /* No limit of number of sessions */
125 dev_info->sym.max_nb_sessions = 0;
126 dev_info->feature_flags = dev->feature_flags;
127 dev_info->capabilities = null_crypto_pmd_capabilities;
131 /** Release queue pair */
133 null_crypto_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
135 if (dev->data->queue_pairs[qp_id] != NULL) {
136 struct null_crypto_qp *qp = dev->data->queue_pairs[qp_id];
138 rte_ring_free(qp->processed_pkts);
140 rte_free(dev->data->queue_pairs[qp_id]);
141 dev->data->queue_pairs[qp_id] = NULL;
146 /** set a unique name for the queue pair based on it's name, dev_id and qp_id */
148 null_crypto_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
149 struct null_crypto_qp *qp)
151 unsigned n = snprintf(qp->name, sizeof(qp->name),
152 "null_crypto_pmd_%u_qp_%u",
153 dev->data->dev_id, qp->id);
155 if (n >= sizeof(qp->name))
161 /** Create a ring to place process packets on */
162 static struct rte_ring *
163 null_crypto_pmd_qp_create_processed_pkts_ring(struct null_crypto_qp *qp,
164 unsigned ring_size, int socket_id)
168 r = rte_ring_lookup(qp->name);
170 if (rte_ring_get_size(r) >= ring_size) {
172 "Reusing existing ring %s for "
173 " processed packets", qp->name);
178 "Unable to reuse existing ring %s for "
179 " processed packets", qp->name);
183 return rte_ring_create(qp->name, ring_size, socket_id,
184 RING_F_SP_ENQ | RING_F_SC_DEQ);
187 /** Setup a queue pair */
189 null_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
190 const struct rte_cryptodev_qp_conf *qp_conf,
193 struct null_crypto_private *internals = dev->data->dev_private;
194 struct null_crypto_qp *qp;
197 if (qp_id >= internals->max_nb_qpairs) {
198 NULL_LOG(ERR, "Invalid qp_id %u, greater than maximum "
199 "number of queue pairs supported (%u).",
200 qp_id, internals->max_nb_qpairs);
204 /* Free memory prior to re-allocation if needed. */
205 if (dev->data->queue_pairs[qp_id] != NULL)
206 null_crypto_pmd_qp_release(dev, qp_id);
208 /* Allocate the queue pair data structure. */
209 qp = rte_zmalloc_socket("Null Crypto PMD Queue Pair", sizeof(*qp),
210 RTE_CACHE_LINE_SIZE, socket_id);
212 NULL_LOG(ERR, "Failed to allocate queue pair memory");
217 dev->data->queue_pairs[qp_id] = qp;
219 retval = null_crypto_pmd_qp_set_unique_name(dev, qp);
221 NULL_LOG(ERR, "Failed to create unique name for null "
224 goto qp_setup_cleanup;
227 qp->processed_pkts = null_crypto_pmd_qp_create_processed_pkts_ring(qp,
228 qp_conf->nb_descriptors, socket_id);
229 if (qp->processed_pkts == NULL) {
230 NULL_LOG(ERR, "Failed to create unique name for null "
232 goto qp_setup_cleanup;
235 qp->sess_mp = qp_conf->mp_session;
236 qp->sess_mp_priv = qp_conf->mp_session_private;
238 memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
248 /** Returns the size of the NULL crypto session structure */
250 null_crypto_pmd_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
252 return sizeof(struct null_crypto_session);
255 /** Configure a null crypto session from a crypto xform chain */
257 null_crypto_pmd_sym_session_configure(struct rte_cryptodev *dev __rte_unused,
258 struct rte_crypto_sym_xform *xform,
259 struct rte_cryptodev_sym_session *sess,
260 struct rte_mempool *mp)
262 void *sess_private_data;
265 if (unlikely(sess == NULL)) {
266 NULL_LOG(ERR, "invalid session struct");
270 if (rte_mempool_get(mp, &sess_private_data)) {
272 "Couldn't get object from session mempool");
276 ret = null_crypto_set_session_parameters(sess_private_data, xform);
278 NULL_LOG(ERR, "failed configure session parameters");
280 /* Return session to mempool */
281 rte_mempool_put(mp, sess_private_data);
285 set_sym_session_private_data(sess, dev->driver_id,
291 /** Clear the memory of session so it doesn't leave key material behind */
293 null_crypto_pmd_sym_session_clear(struct rte_cryptodev *dev,
294 struct rte_cryptodev_sym_session *sess)
296 uint8_t index = dev->driver_id;
297 void *sess_priv = get_sym_session_private_data(sess, index);
299 /* Zero out the whole structure */
301 memset(sess_priv, 0, sizeof(struct null_crypto_session));
302 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
303 set_sym_session_private_data(sess, index, NULL);
304 rte_mempool_put(sess_mp, sess_priv);
308 static struct rte_cryptodev_ops pmd_ops = {
309 .dev_configure = null_crypto_pmd_config,
310 .dev_start = null_crypto_pmd_start,
311 .dev_stop = null_crypto_pmd_stop,
312 .dev_close = null_crypto_pmd_close,
314 .stats_get = null_crypto_pmd_stats_get,
315 .stats_reset = null_crypto_pmd_stats_reset,
317 .dev_infos_get = null_crypto_pmd_info_get,
319 .queue_pair_setup = null_crypto_pmd_qp_setup,
320 .queue_pair_release = null_crypto_pmd_qp_release,
322 .sym_session_get_size = null_crypto_pmd_sym_session_get_size,
323 .sym_session_configure = null_crypto_pmd_sym_session_configure,
324 .sym_session_clear = null_crypto_pmd_sym_session_clear
327 struct rte_cryptodev_ops *null_crypto_pmd_ops = &pmd_ops;