New upstream version 17.11-rc3
[deb_dpdk.git] / drivers / crypto / mrvl / rte_mrvl_pmd_ops.c
diff --git a/drivers/crypto/mrvl/rte_mrvl_pmd_ops.c b/drivers/crypto/mrvl/rte_mrvl_pmd_ops.c
new file mode 100644 (file)
index 0000000..434cf85
--- /dev/null
@@ -0,0 +1,778 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 Marvell International Ltd.
+ *   Copyright(c) 2017 Semihalf.
+ *   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 the copyright holder 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 "rte_mrvl_pmd_private.h"
+
+/**
+ * Capabilities list to be used in reporting to DPDK.
+ */
+static const struct rte_cryptodev_capabilities
+       mrvl_crypto_pmd_capabilities[] = {
+       {       /* MD5 HMAC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_MD5_HMAC,
+                               .block_size = 64,
+                               .key_size = {
+                                       .min = 1,
+                                       .max = 64,
+                                       .increment = 1
+                               },
+                               .digest_size = {
+                                       .min = 16,
+                                       .max = 16,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* MD5 */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+                       {.sym = {
+                               .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                               {.auth = {
+                                       .algo = RTE_CRYPTO_AUTH_MD5,
+                                       .block_size = 64,
+                                       .key_size = {
+                                               .min = 0,
+                                               .max = 0,
+                                               .increment = 0
+                                       },
+                                       .digest_size = {
+                                               .min = 16,
+                                               .max = 16,
+                                               .increment = 0
+                                       },
+                               }, }
+                       }, }
+       },
+       {       /* SHA1 HMAC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+                       {.sym = {
+                               .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                               {.auth = {
+                                       .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
+                                       .block_size = 64,
+                                       .key_size = {
+                                               .min = 1,
+                                               .max = 64,
+                                               .increment = 1
+                                       },
+                                       .digest_size = {
+                                               .min = 20,
+                                               .max = 20,
+                                               .increment = 0
+                                       },
+                               }, }
+                       }, }
+       },
+       {       /* SHA1 */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_SHA1,
+                               .block_size = 64,
+                               .key_size = {
+                                       .min = 0,
+                                       .max = 0,
+                                       .increment = 0
+                               },
+                               .digest_size = {
+                                       .min = 20,
+                                       .max = 20,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* SHA224 */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_SHA224,
+                               .block_size = 64,
+                               .key_size = {
+                                       .min = 0,
+                                       .max = 0,
+                                       .increment = 0
+                               },
+                               .digest_size = {
+                                       .min = 28,
+                                       .max = 28,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* SHA256 HMAC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+                       {.sym = {
+                               .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                               {.auth = {
+                                       .algo = RTE_CRYPTO_AUTH_SHA256_HMAC,
+                                       .block_size = 64,
+                                       .key_size = {
+                                               .min = 1,
+                                               .max = 64,
+                                               .increment = 1
+                                       },
+                                       .digest_size = {
+                                               .min = 32,
+                                               .max = 32,
+                                               .increment = 0
+                                       },
+                               }, }
+                       }, }
+       },
+       {       /* SHA256 */
+                       .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+                       {.sym = {
+                               .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                               {.auth = {
+                                       .algo = RTE_CRYPTO_AUTH_SHA256,
+                                       .block_size = 64,
+                                       .key_size = {
+                                               .min = 0,
+                                               .max = 0,
+                                               .increment = 0
+                                       },
+                                       .digest_size = {
+                                               .min = 32,
+                                               .max = 32,
+                                               .increment = 0
+                                       },
+                               }, }
+                       }, }
+               },
+       {       /* SHA384 HMAC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_SHA384_HMAC,
+                               .block_size = 128,
+                               .key_size = {
+                                       .min = 1,
+                                       .max = 128,
+                                       .increment = 1
+                               },
+                               .digest_size = {
+                                       .min = 48,
+                                       .max = 48,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* SHA384 */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_SHA384,
+                               .block_size = 128,
+                               .key_size = {
+                                       .min = 0,
+                                       .max = 0,
+                                       .increment = 0
+                               },
+                               .digest_size = {
+                                       .min = 48,
+                                       .max = 48,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* SHA512 HMAC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_SHA512_HMAC,
+                               .block_size = 128,
+                               .key_size = {
+                                       .min = 1,
+                                       .max = 128,
+                                       .increment = 1
+                               },
+                               .digest_size = {
+                                       .min = 64,
+                                       .max = 64,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* SHA512  */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+                       {.auth = {
+                               .algo = RTE_CRYPTO_AUTH_SHA512,
+                               .block_size = 128,
+                               .key_size = {
+                                       .min = 0,
+                                       .max = 0,
+                                       .increment = 0
+                               },
+                               .digest_size = {
+                                       .min = 64,
+                                       .max = 64,
+                                       .increment = 0
+                               },
+                       }, }
+               }, }
+       },
+       {       /* AES CBC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+                       {.sym = {
+                               .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+                               {.cipher = {
+                                       .algo = RTE_CRYPTO_CIPHER_AES_CBC,
+                                       .block_size = 16,
+                                       .key_size = {
+                                               .min = 16,
+                                               .max = 32,
+                                               .increment = 8
+                                       },
+                                       .iv_size = {
+                                               .min = 16,
+                                               .max = 16,
+                                               .increment = 0
+                                       }
+                               }, }
+                       }, }
+       },
+       {       /* AES CTR */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+                       {.cipher = {
+                               .algo = RTE_CRYPTO_CIPHER_AES_CTR,
+                               .block_size = 16,
+                               .key_size = {
+                                       .min = 16,
+                                       .max = 32,
+                                       .increment = 8
+                               },
+                               .iv_size = {
+                                       .min = 16,
+                                       .max = 16,
+                                       .increment = 0
+                               }
+                       }, }
+               }, }
+       },
+       {       /* AES GCM */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_AEAD,
+                       {.aead = {
+                               .algo = RTE_CRYPTO_AEAD_AES_GCM,
+                               .block_size = 16,
+                               .key_size = {
+                                       .min = 16,
+                                       .max = 32,
+                                       .increment = 8
+                               },
+                               .digest_size = {
+                                       .min = 16,
+                                       .max = 16,
+                                       .increment = 0
+                               },
+                               .aad_size = {
+                                       .min = 8,
+                                       .max = 12,
+                                       .increment = 4
+                               },
+                               .iv_size = {
+                                       .min = 12,
+                                       .max = 16,
+                                       .increment = 4
+                               }
+                       }, }
+               }, }
+       },
+       {       /* 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 = 8
+                               },
+                               .digest_size = {
+                                       .min = 16,
+                                       .max = 16,
+                                       .increment = 0
+                               },
+                               .iv_size = {
+                                       .min = 8,
+                                       .max = 65532,
+                                       .increment = 4
+                               }
+                       }, }
+               }, }
+       },
+       {       /* 3DES CBC */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+                       {.cipher = {
+                               .algo = RTE_CRYPTO_CIPHER_3DES_CBC,
+                               .block_size = 8,
+                               .key_size = {
+                                       .min = 24,
+                                       .max = 24,
+                                       .increment = 0
+                               },
+                               .iv_size = {
+                                       .min = 8,
+                                       .max = 8,
+                                       .increment = 0
+                               }
+                       }, }
+               }, }
+       },
+       {       /* 3DES CTR */
+               .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+               {.sym = {
+                       .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+                       {.cipher = {
+                               .algo = RTE_CRYPTO_CIPHER_3DES_CTR,
+                               .block_size = 8,
+                               .key_size = {
+                                       .min = 24,
+                                       .max = 24,
+                                       .increment = 0
+                               },
+                               .iv_size = {
+                                       .min = 8,
+                                       .max = 8,
+                                       .increment = 0
+                               }
+                       }, }
+               }, }
+       },
+
+       RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
+};
+
+
+/**
+ * Configure device (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @param config Pointer to configuration structure.
+ * @returns 0. Always.
+ */
+static int
+mrvl_crypto_pmd_config(__rte_unused struct rte_cryptodev *dev,
+               __rte_unused struct rte_cryptodev_config *config)
+{
+       return 0;
+}
+
+/**
+ * Start device (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @returns 0. Always.
+ */
+static int
+mrvl_crypto_pmd_start(__rte_unused struct rte_cryptodev *dev)
+{
+       return 0;
+}
+
+/**
+ * Stop device (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @returns 0. Always.
+ */
+static void
+mrvl_crypto_pmd_stop(__rte_unused struct rte_cryptodev *dev)
+{
+}
+
+/**
+ * Get device statistics (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @param stats Pointer to statistics structure [out].
+ */
+static void
+mrvl_crypto_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 mrvl_crypto_qp *qp = dev->data->queue_pairs[qp_id];
+
+               stats->enqueued_count += qp->stats.enqueued_count;
+               stats->dequeued_count += qp->stats.dequeued_count;
+
+               stats->enqueue_err_count += qp->stats.enqueue_err_count;
+               stats->dequeue_err_count += qp->stats.dequeue_err_count;
+       }
+}
+
+/**
+ * Reset device statistics (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ */
+static void
+mrvl_crypto_pmd_stats_reset(struct rte_cryptodev *dev)
+{
+       int qp_id;
+
+       for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
+               struct mrvl_crypto_qp *qp = dev->data->queue_pairs[qp_id];
+
+               memset(&qp->stats, 0, sizeof(qp->stats));
+       }
+}
+
+/**
+ * Get device info (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @param dev_info Pointer to the device info structure [out].
+ */
+static void
+mrvl_crypto_pmd_info_get(struct rte_cryptodev *dev,
+               struct rte_cryptodev_info *dev_info)
+{
+       struct mrvl_crypto_private *internals = dev->data->dev_private;
+
+       if (dev_info != NULL) {
+               dev_info->driver_id = dev->driver_id;
+               dev_info->feature_flags = dev->feature_flags;
+               dev_info->capabilities = mrvl_crypto_pmd_capabilities;
+               dev_info->max_nb_queue_pairs = internals->max_nb_qpairs;
+               dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
+       }
+}
+
+/**
+ * Release queue pair (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @param qp_id ID of Queue Pair to release.
+ * @returns 0. Always.
+ */
+static int
+mrvl_crypto_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
+{
+       struct mrvl_crypto_qp *qp =
+                       (struct mrvl_crypto_qp *)dev->data->queue_pairs[qp_id];
+
+       if (dev->data->queue_pairs[qp_id] != NULL) {
+               sam_cio_flush(qp->cio);
+               sam_cio_deinit(qp->cio);
+               rte_free(dev->data->queue_pairs[qp_id]);
+               dev->data->queue_pairs[qp_id] = NULL;
+       }
+
+       return 0;
+}
+
+/**
+ * Close device (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @returns 0. Always.
+ */
+static int
+mrvl_crypto_pmd_close(struct rte_cryptodev *dev)
+{
+       int qp_id;
+
+       for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++)
+               mrvl_crypto_pmd_qp_release(dev, qp_id);
+
+       return 0;
+}
+
+/**
+ * Setup a queue pair (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @param qp_id ID of the Queue Pair.
+ * @param qp_conf Queue pair configuration (nb of descriptors).
+ * @param socket_id NUMA socket to allocate memory on.
+ * @returns 0 upon success, negative value otherwise.
+ */
+static int
+mrvl_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
+               const struct rte_cryptodev_qp_conf *qp_conf,
+               int socket_id, struct rte_mempool *session_pool)
+{
+       struct mrvl_crypto_qp *qp = NULL;
+       char match[RTE_CRYPTODEV_NAME_LEN];
+       unsigned int n;
+
+       /* Allocate the queue pair data structure. */
+       qp = rte_zmalloc_socket("MRVL Crypto PMD Queue Pair", sizeof(*qp),
+                                       RTE_CACHE_LINE_SIZE, socket_id);
+       if (qp == NULL)
+               return -ENOMEM;
+
+       /* Free old qp prior setup if needed. */
+       if (dev->data->queue_pairs[qp_id] != NULL)
+               mrvl_crypto_pmd_qp_release(dev, qp_id);
+
+       do { /* Error handling block */
+
+               /*
+                * This extra check is necessary due to a bug in
+                * crypto library.
+                */
+               int num = sam_get_num_inst();
+               if (num == 0) {
+                       MRVL_CRYPTO_LOG_ERR("No crypto engines detected.\n");
+                       return -1;
+               }
+
+               /*
+                * In case two crypto engines are enabled qps will
+                * be evenly spread among them. Even and odd qps will
+                * be handled by cio-0 and cio-1 respectively. qp-cio mapping
+                * will look as follows:
+                *
+                * qp:      0        1        2        3
+                * cio-x:y: cio-0:0, cio-1:0, cio-0:1, cio-1:1
+                *
+                * qp:      4        5        6        7
+                * cio-x:y: cio-0:2, cio-1:2, cio-0:3, cio-1:3
+                *
+                * In case just one engine is enabled mapping will look as
+                * follows:
+                * qp:      0        1        2        3
+                * cio-x:y: cio-0:0, cio-0:1, cio-0:2, cio-0:3
+                */
+               n = snprintf(match, sizeof(match), "cio-%u:%u",
+                               qp_id % num, qp_id / num);
+
+               if (n >= sizeof(match))
+                       break;
+
+               qp->cio_params.match = match;
+               qp->cio_params.size = qp_conf->nb_descriptors;
+
+               if (sam_cio_init(&qp->cio_params, &qp->cio) < 0)
+                       break;
+
+               qp->sess_mp = session_pool;
+
+               memset(&qp->stats, 0, sizeof(qp->stats));
+               dev->data->queue_pairs[qp_id] = qp;
+               return 0;
+       } while (0);
+
+       rte_free(qp);
+       return -1;
+}
+
+/** Start queue pair (PMD ops callback) - not supported.
+ *
+ * @param dev Pointer to the device structure.
+ * @param qp_id ID of the Queue Pair.
+ * @returns -ENOTSUP. Always.
+ */
+static int
+mrvl_crypto_pmd_qp_start(__rte_unused struct rte_cryptodev *dev,
+               __rte_unused uint16_t queue_pair_id)
+{
+       return -ENOTSUP;
+}
+
+/** Stop queue pair (PMD ops callback) - not supported.
+ *
+ * @param dev Pointer to the device structure.
+ * @param qp_id ID of the Queue Pair.
+ * @returns -ENOTSUP. Always.
+ */
+static int
+mrvl_crypto_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 (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @returns Number of allocated queue pairs.
+ */
+static uint32_t
+mrvl_crypto_pmd_qp_count(struct rte_cryptodev *dev)
+{
+       return dev->data->nb_queue_pairs;
+}
+
+/** Returns the size of the session structure (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure [Unused].
+ * @returns Size of Marvell crypto session.
+ */
+static unsigned
+mrvl_crypto_pmd_session_get_size(__rte_unused struct rte_cryptodev *dev)
+{
+       return sizeof(struct mrvl_crypto_session);
+}
+
+/** Configure the session from a crypto xform chain (PMD ops callback).
+ *
+ * @param dev Pointer to the device structure.
+ * @param xform Pointer to the crytpo configuration structure.
+ * @param sess Pointer to the empty session structure.
+ * @returns 0 upon success, negative value otherwise.
+ */
+static int
+mrvl_crypto_pmd_session_configure(__rte_unused struct rte_cryptodev *dev,
+               struct rte_crypto_sym_xform *xform,
+               struct rte_cryptodev_sym_session *sess,
+               struct rte_mempool *mp)
+{
+       struct mrvl_crypto_session *mrvl_sess;
+       void *sess_private_data;
+       int ret;
+
+       if (sess == NULL) {
+               MRVL_CRYPTO_LOG_ERR("Invalid session struct.");
+               return -EINVAL;
+       }
+
+       if (rte_mempool_get(mp, &sess_private_data)) {
+               CDEV_LOG_ERR("Couldn't get object from session mempool.");
+               return -ENOMEM;
+       }
+
+       ret = mrvl_crypto_set_session_parameters(sess_private_data, xform);
+       if (ret != 0) {
+               MRVL_CRYPTO_LOG_ERR("Failed to configure session parameters.");
+
+               /* Return session to mempool */
+               rte_mempool_put(mp, sess_private_data);
+               return ret;
+       }
+
+       set_session_private_data(sess, dev->driver_id, sess_private_data);
+
+       mrvl_sess = (struct mrvl_crypto_session *)sess_private_data;
+       if (sam_session_create(&mrvl_sess->sam_sess_params,
+                               &mrvl_sess->sam_sess) < 0) {
+               MRVL_CRYPTO_LOG_DBG("Failed to create session!");
+               return -EIO;
+       }
+
+       return 0;
+}
+
+/**
+ * Clear the memory of session so it doesn't leave key material behind.
+ *
+ * @param dev Pointer to the device structure.
+ * @returns 0. Always.
+ */
+static void
+mrvl_crypto_pmd_session_clear(struct rte_cryptodev *dev,
+               struct rte_cryptodev_sym_session *sess)
+{
+
+       uint8_t index = dev->driver_id;
+       void *sess_priv = get_session_private_data(sess, index);
+
+       /* Zero out the whole structure */
+       if (sess_priv) {
+               struct mrvl_crypto_session *mrvl_sess =
+                       (struct mrvl_crypto_session *)sess_priv;
+
+               if (mrvl_sess->sam_sess &&
+                   sam_session_destroy(mrvl_sess->sam_sess) < 0) {
+                       MRVL_CRYPTO_LOG_INFO("Error while destroying session!");
+               }
+
+               memset(sess, 0, sizeof(struct mrvl_crypto_session));
+               struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
+               set_session_private_data(sess, index, NULL);
+               rte_mempool_put(sess_mp, sess_priv);
+       }
+}
+
+/**
+ * PMD handlers for crypto ops.
+ */
+static struct rte_cryptodev_ops mrvl_crypto_pmd_ops = {
+               .dev_configure          = mrvl_crypto_pmd_config,
+               .dev_start              = mrvl_crypto_pmd_start,
+               .dev_stop               = mrvl_crypto_pmd_stop,
+               .dev_close              = mrvl_crypto_pmd_close,
+
+               .dev_infos_get          = mrvl_crypto_pmd_info_get,
+
+               .stats_get              = mrvl_crypto_pmd_stats_get,
+               .stats_reset            = mrvl_crypto_pmd_stats_reset,
+
+               .queue_pair_setup       = mrvl_crypto_pmd_qp_setup,
+               .queue_pair_release     = mrvl_crypto_pmd_qp_release,
+               .queue_pair_start       = mrvl_crypto_pmd_qp_start,
+               .queue_pair_stop        = mrvl_crypto_pmd_qp_stop,
+               .queue_pair_count       = mrvl_crypto_pmd_qp_count,
+
+               .session_get_size       = mrvl_crypto_pmd_session_get_size,
+               .session_configure      = mrvl_crypto_pmd_session_configure,
+               .session_clear          = mrvl_crypto_pmd_session_clear
+};
+
+struct rte_cryptodev_ops *rte_mrvl_crypto_pmd_ops = &mrvl_crypto_pmd_ops;