text: /* SPDX-License-Identifier: BSD-3-Clause
   * Copyright(C) 2019 Marvell International Ltd.
   */
  
  #include <stdbool.h>
  
  #include <rte_cryptodev_pmd.h>
  #include <rte_crypto.h>
  
  #include "nitrox_sym.h"
  #include "nitrox_device.h"
  #include "nitrox_sym_capabilities.h"
  #include "nitrox_qp.h"
  #include "nitrox_sym_reqmgr.h"
  #include "nitrox_sym_ctx.h"
  #include "nitrox_logs.h"
  
  #define CRYPTODEV_NAME_NITROX_PMD crypto_nitrox_sym
  #define MC_MAC_MISMATCH_ERR_CODE 0x4c
  #define NPS_PKT_IN_INSTR_SIZE 64
  #define IV_FROM_DPTR 1
  #define FLEXI_CRYPTO_ENCRYPT_HMAC 0x33
  #define AES_KEYSIZE_128 16
  #define AES_KEYSIZE_192 24
  #define AES_KEYSIZE_256 32
  #define MAX_IV_LEN 16
  
  struct nitrox_sym_device {
  	struct rte_cryptodev *cdev;
  	struct nitrox_device *ndev;
  };
  
  /* Cipher opcodes */
  enum flexi_cipher {
  	CIPHER_NULL = 0,
  	CIPHER_3DES_CBC,
  	CIPHER_3DES_ECB,
  	CIPHER_AES_CBC,
  	CIPHER_AES_ECB,
  	CIPHER_AES_CFB,
  	CIPHER_AES_CTR,
  	CIPHER_AES_GCM,
  	CIPHER_AES_XTS,
  	CIPHER_AES_CCM,
  	CIPHER_AES_CBC_CTS,
  	CIPHER_AES_ECB_CTS,
  	CIPHER_INVALID
  };
  
  /* Auth opcodes */
  enum flexi_auth {
  	AUTH_NULL = 0,
  	AUTH_MD5,
  	AUTH_SHA1,
  	AUTH_SHA2_SHA224,
  	AUTH_SHA2_SHA256,
  	AUTH_SHA2_SHA384,
  	AUTH_SHA2_SHA512,
  	AUTH_GMAC,
  	AUTH_INVALID
  };
  
  uint8_t nitrox_sym_drv_id;
  static const char nitrox_sym_drv_name[] = RTE_STR(CRYPTODEV_NAME_NITROX_PMD);
  static const struct rte_driver nitrox_rte_sym_drv = {
  	.name = nitrox_sym_drv_name,
  	.alias = nitrox_sym_drv_name
  };
  
  static int nitrox_sym_dev_qp_release(struct rte_cryptodev *cdev,
  				     uint16_t qp_id);
  
  static int
  nitrox_sym_dev_config(struct rte_cryptodev *cdev,
  		      struct rte_cryptodev_config *config)
  {
  	struct nitrox_sym_device *sym_dev = cdev->data->dev_private;
  	struct nitrox_device *ndev = sym_dev->ndev;
  
  	if (config->nb_queue_pairs > ndev->nr_queues) {
  		NITROX_LOG(ERR, "Invalid queue pairs, max supported %d\n",
  			   ndev->nr_queues);
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static int
  nitrox_sym_dev_start(struct rte_cryptodev *cdev)
  {
  	/* SE cores initialization is done in PF */
  	RTE_SET_USED(cdev);
  	return 0;
  }
  
  static void
  nitrox_sym_dev_stop(struct rte_cryptodev *cdev)
  {
  	/* SE cores cleanup is done in PF */
  	RTE_SET_USED(cdev);
  }
  
  static int
  nitrox_sym_dev_close(struct rte_cryptodev *cdev)
  {
  	int i, ret;
  
  	for (i = 0; i < cdev->data->nb_queue_pairs; i++) {
  		ret = nitrox_sym_dev_qp_release(cdev, i);
  		if (ret)
  			return ret;
  	}
  
  	return 0;
  }
  
  static void
  nitrox_sym_dev_info_get(struct rte_cryptodev *cdev,
  			struct rte_cryptodev_info *info)
  {
  	struct nitrox_sym_device *sym_dev = cdev->data->dev_private;
  	struct nitrox_device *ndev = sym_dev->ndev;
  
  	if (!info)
  		return;
  
  	info->max_nb_queue_pairs = ndev->nr_queues;
  	info->feature_flags = cdev->feature_flags;
  	info->capabilities = nitrox_get_sym_capabilities();
  	info->driver_id = nitrox_sym_drv_id;
  	info->sym.max_nb_sessions = 0;
  }
  
  static void
  nitrox_sym_dev_stats_get(struct rte_cryptodev *cdev,
  			 struct rte_cryptodev_stats *stats)
  {
  	int qp_id;
  
  	for (qp_id = 0; qp_id < cdev->data->nb_queue_pairs; qp_id++) {
  		struct nitrox_qp *qp = cdev->data->queue_pairs[qp_id];
  
  		if (!qp)
  			continue;
  
  		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;
  	}
  }
  
  static void
  nitrox_sym_dev_stats_reset(struct rte_cryptodev *cdev)
  {
  	int qp_id;
  
  	for (qp_id = 0; qp_id < cdev->data->nb_queue_pairs; qp_id++) {
  		struct nitrox_qp *qp = cdev->data->queue_pairs[qp_id];
  
  		if (!qp)
  			continue;
  
  		memset(&qp->stats, 0, sizeof(qp->stats));
  	}
  }
  
  static int
  nitrox_sym_dev_qp_setup(struct rte_cryptodev *cdev, uint16_t qp_id,
  			const struct rte_cryptodev_qp_conf *qp_conf,
  			int socket_id)
  {
  	struct nitrox_sym_device *sym_dev = cdev->data->dev_private;
  	struct nitrox_device *ndev = sym_dev->ndev;
  	struct nitrox_qp *qp = NULL;
  	int err;
  
  	NITROX_LOG(DEBUG, "queue %d\n", qp_id);
  	if (qp_id >= ndev->nr_queues) {
  		NITROX_LOG(ERR, "queue %u invalid, max queues supported %d\n",
  			   qp_id, ndev->nr_queues);
  		return -EINVAL;
  	}
  
  	if (cdev->data->queue_pairs[qp_id]) {
  		err = nitrox_sym_dev_qp_release(cdev, qp_id);
  		if (err)
  			return err;
  	}
  
  	qp = rte_zmalloc_socket("nitrox PMD qp", sizeof(*qp),
  				RTE_CACHE_LINE_SIZE,
  				socket_id);
  	if (!qp) {
  		NITROX_LOG(ERR, "Failed to allocate nitrox qp\n");
  		return -ENOMEM;
  	}
  
  	qp->qno = qp_id;
  	err = nitrox_qp_setup(qp, ndev->bar_addr, cdev->data->name,
  			      qp_conf->nb_descriptors, NPS_PKT_IN_INSTR_SIZE,
  			      socket_id);
  	if (unlikely(err))
  		goto qp_setup_err;
  
  	qp->sr_mp = nitrox_sym_req_pool_create(cdev, qp->count, qp_id,
  					       socket_id);
  	if (unlikely(!qp->sr_mp))
  		goto req_pool_err;
  
  	cdev->data->queue_pairs[qp_id] = qp;
  	NITROX_LOG(DEBUG, "queue %d setup done\n", qp_id);
  	return 0;
  
  req_pool_err:
  	nitrox_qp_release(qp, ndev->bar_addr);
  qp_setup_err:
  	rte_free(qp);
  	return err;
  }
  
  static int
  nitrox_sym_dev_qp_release(struct rte_cryptodev *cdev, uint16_t qp_id)
  {
  	struct nitrox_sym_device *sym_dev = cdev->data->dev_private;
  	struct nitrox_device *ndev = sym_dev->ndev;
  	struct nitrox_qp *qp;
  	int err;
  
  	NITROX_LOG(DEBUG, "queue %d\n", qp_id);
  	if (qp_id >= ndev->nr_queues) {
  		NITROX_LOG(ERR, "queue %u invalid, max queues supported %d\n",
  			   qp_id, ndev->nr_queues);
  		return -EINVAL;
  	}
  
  	qp = cdev->data->queue_pairs[qp_id];
  	if (!qp) {
  		NITROX_LOG(DEBUG, "queue %u already freed\n", qp_id);
  		return 0;
  	}
  
  	if (!nitrox_qp_is_empty(qp)) {
  		NITROX_LOG(ERR, "queue %d not empty\n", qp_id);
  		return -EAGAIN;
  	}
  
  	cdev->data->queue_pairs[qp_id] = NULL;
  	err = nitrox_qp_release(qp, ndev->bar_addr);
  	nitrox_sym_req_pool_free(qp->sr_mp);
  	rte_free(qp);
  	NITROX_LOG(DEBUG, "queue %d release done\n", qp_id);
  	return err;
  }
  
  static unsigned int
  nitrox_sym_dev_sess_get_size(__rte_unused struct rte_cryptodev *cdev)
  {
  	return sizeof(struct nitrox_crypto_ctx);
  }
  
  static enum nitrox_chain
  get_crypto_chain_order(const struct rte_crypto_sym_xform *xform)
  {
  	enum nitrox_chain res = NITROX_CHAIN_NOT_SUPPORTED;
  
  	if (unlikely(xform == NULL))
  		return res;
  
  	switch (xform->type) {
  	case RTE_CRYPTO_SYM_XFORM_AUTH:
  		if (xform->next == NULL) {
  			res = NITROX_CHAIN_NOT_SUPPORTED;
  		} else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  			if (xform->auth.op == RTE_CRYPTO_AUTH_OP_VERIFY &&
  			    xform->next->cipher.op ==
  			    RTE_CRYPTO_CIPHER_OP_DECRYPT) {
  				res = NITROX_CHAIN_AUTH_CIPHER;
  			} else {
  				NITROX_LOG(ERR, "auth op %d, cipher op %d\n",
  				    xform->auth.op, xform->next->cipher.op);
  			}
  		}
  		break;
  	case RTE_CRYPTO_SYM_XFORM_CIPHER:
  		if (xform->next == NULL) {
  			res = NITROX_CHAIN_CIPHER_ONLY;
  		} else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  			if (xform->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT &&
  			    xform->next->auth.op ==
  			    RTE_CRYPTO_AUTH_OP_GENERATE) {
  				res = NITROX_CHAIN_CIPHER_AUTH;
  			} else {
  				NITROX_LOG(ERR, "cipher op %d, auth op %d\n",
  				    xform->cipher.op, xform->next->auth.op);
  			}
  		}
  		break;
  	default:
  		break;
  	}
  
  	return res;
  }
  
  static enum flexi_cipher
  get_flexi_cipher_type(enum rte_crypto_cipher_algorithm algo, bool *is_aes)
  {
  	enum flexi_cipher type;
  
  	switch (algo) {
  	case RTE_CRYPTO_CIPHER_AES_CBC:
  		type = CIPHER_AES_CBC;
  		*is_aes = true;
  		break;
  	default:
  		type = CIPHER_INVALID;
  		NITROX_LOG(ERR, "Algorithm not supported %d\n", algo);
  		break;
  	}
  
  	return type;
  }
  
  static int
  flexi_aes_keylen(size_t keylen, bool is_aes)
  {
  	int aes_keylen;
  
  	if (!is_aes)
  		return 0;
  
  	switch (keylen) {
  	case AES_KEYSIZE_128:
  		aes_keylen = 1;
  		break;
  	case AES_KEYSIZE_192:
  		aes_keylen = 2;
  		break;
  	case AES_KEYSIZE_256:
  		aes_keylen = 3;
  		break;
  	default:
  		NITROX_LOG(ERR, "Invalid keylen %zu\n", keylen);
  		aes_keylen = -EINVAL;
  		break;
  	}
  
  	return aes_keylen;
  }
  
  static bool
  crypto_key_is_valid(struct rte_crypto_cipher_xform *xform,
  		    struct flexi_crypto_context *fctx)
  {
  	if (unlikely(xform->key.length > sizeof(fctx->crypto.key))) {
  		NITROX_LOG(ERR, "Invalid crypto key length %d\n",
  			   xform->key.length);
  		return false;
  	}
  
  	return true;
  }
  
  static int
  configure_cipher_ctx(struct rte_crypto_cipher_xform *xform,
  		     struct nitrox_crypto_ctx *ctx)
  {
  	enum flexi_cipher type;
  	bool cipher_is_aes = false;
  	int aes_keylen;
  	struct flexi_crypto_context *fctx = &ctx->fctx;
  
  	type = get_flexi_cipher_type(xform->algo, &cipher_is_aes);
  	if (unlikely(type == CIPHER_INVALID))
  		return -ENOTSUP;
  
  	aes_keylen = flexi_aes_keylen(xform->key.length, cipher_is_aes);
  	if (unlikely(aes_keylen < 0))
  		return -EINVAL;
  
  	if (unlikely(!cipher_is_aes && !crypto_key_is_valid(xform, fctx)))
  		return -EINVAL;
  
  	if (unlikely(xform->iv.length > MAX_IV_LEN))
  		return -EINVAL;
  
  	fctx->flags = rte_be_to_cpu_64(fctx->flags);
  	fctx->w0.cipher_type = type;
  	fctx->w0.aes_keylen = aes_keylen;
  	fctx->w0.iv_source = IV_FROM_DPTR;
  	fctx->flags = rte_cpu_to_be_64(fctx->flags);
  	memset(fctx->crypto.key, 0, sizeof(fctx->crypto.key));
  	memcpy(fctx->crypto.key, xform->key.data, xform->key.length);
  
  	ctx->opcode = FLEXI_CRYPTO_ENCRYPT_HMAC;
  	ctx->req_op = (xform->op == RTE_CRYPTO_CIPHER_OP_ENCRYPT) ?
  			NITROX_OP_ENCRYPT : NITROX_OP_DECRYPT;
  	ctx->iv.offset = xform->iv.offset;
  	ctx->iv.length = xform->iv.length;
  	return 0;
  }
  
  static enum flexi_auth
  get_flexi_auth_type(enum rte_crypto_auth_algorithm algo)
  {
  	enum flexi_auth type;
  
  	switch (algo) {
  	case RTE_CRYPTO_AUTH_SHA1_HMAC:
  		type = AUTH_SHA1;
  		break;
  	case RTE_CRYPTO_AUTH_SHA224_HMAC:
  		type = AUTH_SHA2_SHA224;
  		break;
  	case RTE_CRYPTO_AUTH_SHA256_HMAC:
  		type = AUTH_SHA2_SHA256;
  		break;
  	default:
  		NITROX_LOG(ERR, "Algorithm not supported %d\n", algo);
  		type = AUTH_INVALID;
  		break;
  	}
  
  	return type;
  }
  
  static bool
  auth_key_digest_is_valid(struct rte_crypto_auth_xform *xform,
  			 struct flexi_crypto_context *fctx)
  {
  	if (unlikely(!xform->key.data && xform->key.length)) {
  		NITROX_LOG(ERR, "Invalid auth key\n");
  		return false;
  	}
  
  	if (unlikely(xform->key.length > sizeof(fctx->auth.opad))) {
  		NITROX_LOG(ERR, "Invalid auth key length %d\n",
  			   xform->key.length);
  		return false;
  	}
  
  	return true;
  }
  
  static int
  configure_auth_ctx(struct rte_crypto_auth_xform *xform,
  		   struct nitrox_crypto_ctx *ctx)
  {
  	enum flexi_auth type;
  	struct flexi_crypto_context *fctx = &ctx->fctx;
  
  	type = get_flexi_auth_type(xform->algo);
  	if (unlikely(type == AUTH_INVALID))
  		return -ENOTSUP;
  
  	if (unlikely(!auth_key_digest_is_valid(xform, fctx)))
  		return -EINVAL;
  
  	ctx->auth_op = xform->op;
  	ctx->auth_algo = xform->algo;
  	ctx->digest_length = xform->digest_length;
  
  	fctx->flags = rte_be_to_cpu_64(fctx->flags);
  	fctx->w0.hash_type = type;
  	fctx->w0.auth_input_type = 1;
  	fctx->w0.mac_len = xform->digest_length;
  	fctx->flags = rte_cpu_to_be_64(fctx->flags);
  	memset(&fctx->auth, 0, sizeof(fctx->auth));
  	memcpy(fctx->auth.opad, xform->key.data, xform->key.length);
  	return 0;
  }
  
  static int
  nitrox_sym_dev_sess_configure(struct rte_cryptodev *cdev,
  			      struct rte_crypto_sym_xform *xform,
  			      struct rte_cryptodev_sym_session *sess,
  			      struct rte_mempool *mempool)
  {
  	void *mp_obj;
  	struct nitrox_crypto_ctx *ctx;
  	struct rte_crypto_cipher_xform *cipher_xform = NULL;
  	struct rte_crypto_auth_xform *auth_xform = NULL;
  
  	if (rte_mempool_get(mempool, &mp_obj)) {
  		NITROX_LOG(ERR, "Couldn't allocate context\n");
  		return -ENOMEM;
  	}
  
  	ctx = mp_obj;
  	ctx->nitrox_chain = get_crypto_chain_order(xform);
  	switch (ctx->nitrox_chain) {
  	case NITROX_CHAIN_CIPHER_AUTH:
  		cipher_xform = &xform->cipher;
  		auth_xform = &xform->next->auth;
  		break;
  	case NITROX_CHAIN_AUTH_CIPHER:
  		auth_xform = &xform->auth;
  		cipher_xform = &xform->next->cipher;
  		break;
  	default:
  		NITROX_LOG(ERR, "Crypto chain not supported\n");
  		goto err;
  	}
  
  	if (cipher_xform && unlikely(configure_cipher_ctx(cipher_xform, ctx))) {
  		NITROX_LOG(ERR, "Failed to configure cipher ctx\n");
  		goto err;
  	}
  
  	if (auth_xform && unlikely(configure_auth_ctx(auth_xform, ctx))) {
  		NITROX_LOG(ERR, "Failed to configure auth ctx\n");
  		goto err;
  	}
  
  	ctx->iova = rte_mempool_virt2iova(ctx);
  	set_sym_session_private_data(sess, cdev->driver_id, ctx);
  	return 0;
  err:
  	rte_mempool_put(mempool, mp_obj);
  	return -EINVAL;
  }
  
  static void
  nitrox_sym_dev_sess_clear(struct rte_cryptodev *cdev,
  			  struct rte_cryptodev_sym_session *sess)
  {
  	struct nitrox_crypto_ctx *ctx = get_sym_session_private_data(sess,
  							cdev->driver_id);
  	struct rte_mempool *sess_mp;
  
  	if (!ctx)
  		return;
  
  	memset(ctx, 0, sizeof(*ctx));
  	sess_mp = rte_mempool_from_obj(ctx);
  	set_sym_session_private_data(sess, cdev->driver_id, NULL);
  	rte_mempool_put(sess_mp, ctx);
  }
  
  static struct nitrox_crypto_ctx *
  get_crypto_ctx(struct rte_crypto_op *op)
  {
  	if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
  		if (likely(op->sym->session))
  			return get_sym_session_private_data(op->sym->session,
  							   nitrox_sym_drv_id);
  	}
  
  	return NULL;
  }
  
  static int
  nitrox_enq_single_op(struct nitrox_qp *qp, struct rte_crypto_op *op)
  {
  	struct nitrox_crypto_ctx *ctx;
  	struct nitrox_softreq *sr;
  	int err;
  
  	op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
  	ctx = get_crypto_ctx(op);
  	if (unlikely(!ctx)) {
  		op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
  		return -EINVAL;
  	}
  
  	if (unlikely(rte_mempool_get(qp->sr_mp, (void **)&sr)))
  		return -ENOMEM;
  
  	err = nitrox_process_se_req(qp->qno, op, ctx, sr);
  	if (unlikely(err)) {
  		rte_mempool_put(qp->sr_mp, sr);
  		op->status = RTE_CRYPTO_OP_STATUS_ERROR;
  		return err;
  	}
  
  	nitrox_qp_enqueue(qp, nitrox_sym_instr_addr(sr), sr);
  	return 0;
  }
  
  static uint16_t
  nitrox_sym_dev_enq_burst(void *queue_pair, struct rte_crypto_op **ops,
  			 uint16_t nb_ops)
  {
  	struct nitrox_qp *qp = queue_pair;
  	uint16_t free_slots = 0;
  	uint16_t cnt = 0;
  	bool err = false;
  
  	free_slots = nitrox_qp_free_count(qp);
  	if (nb_ops > free_slots)
  		nb_ops = free_slots;
  
  	for (cnt = 0; cnt < nb_ops; cnt++) {
  		if (unlikely(nitrox_enq_single_op(qp, ops[cnt]))) {
  			err = true;
  			break;
  		}
  	}
  
  	nitrox_ring_dbell(qp, cnt);
  	qp->stats.enqueued_count += cnt;
  	if (unlikely(err))
  		qp->stats.enqueue_err_count++;
  
  	return cnt;
  }
  
  static int
  nitrox_deq_single_op(struct nitrox_qp *qp, struct rte_crypto_op **op_ptr)
  {
  	struct nitrox_softreq *sr;
  	int ret;
  	struct rte_crypto_op *op;
  
  	sr = nitrox_qp_get_softreq(qp);
  	ret = nitrox_check_se_req(sr, op_ptr);
  	if (ret < 0)
  		return -EAGAIN;
  
  	op = *op_ptr;
  	nitrox_qp_dequeue(qp);
  	rte_mempool_put(qp->sr_mp, sr);
  	if (!ret) {
  		op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
  		qp->stats.dequeued_count++;
  
  		return 0;
  	}
  
  	if (ret == MC_MAC_MISMATCH_ERR_CODE)
  		op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
  	else
  		op->status = RTE_CRYPTO_OP_STATUS_ERROR;
  
  	qp->stats.dequeue_err_count++;
  	return 0;
  }
  
  static uint16_t
  nitrox_sym_dev_deq_burst(void *queue_pair, struct rte_crypto_op **ops,
  			 uint16_t nb_ops)
  {
  	struct nitrox_qp *qp = queue_pair;
  	uint16_t filled_slots = nitrox_qp_used_count(qp);
  	int cnt = 0;
  
  	if (nb_ops > filled_slots)
  		nb_ops = filled_slots;
  
  	for (cnt = 0; cnt < nb_ops; cnt++)
  		if (nitrox_deq_single_op(qp, &ops[cnt]))
  			break;
  
  	return cnt;
  }
  
  static struct rte_cryptodev_ops nitrox_cryptodev_ops = {
  	.dev_configure		= nitrox_sym_dev_config,
  	.dev_start		= nitrox_sym_dev_start,
  	.dev_stop		= nitrox_sym_dev_stop,
  	.dev_close		= nitrox_sym_dev_close,
  	.dev_infos_get		= nitrox_sym_dev_info_get,
  	.stats_get		= nitrox_sym_dev_stats_get,
  	.stats_reset		= nitrox_sym_dev_stats_reset,
  	.queue_pair_setup	= nitrox_sym_dev_qp_setup,
  	.queue_pair_release     = nitrox_sym_dev_qp_release,
  	.sym_session_get_size   = nitrox_sym_dev_sess_get_size,
  	.sym_session_configure  = nitrox_sym_dev_sess_configure,
  	.sym_session_clear      = nitrox_sym_dev_sess_clear
  };
  
  int
  nitrox_sym_pmd_create(struct nitrox_device *ndev)
  {
  	char name[RTE_CRYPTODEV_NAME_MAX_LEN];
  	struct rte_cryptodev_pmd_init_params init_params = {
  			.name = "",
  			.socket_id = ndev->pdev->device.numa_node,
  			.private_data_size = sizeof(struct nitrox_sym_device)
  	};
  	struct rte_cryptodev *cdev;
  
  	rte_pci_device_name(&ndev->pdev->addr, name, sizeof(name));
  	snprintf(name + strlen(name), RTE_CRYPTODEV_NAME_MAX_LEN - strlen(name),
  		 "_n5sym");
  	ndev->rte_sym_dev.driver = &nitrox_rte_sym_drv;
  	ndev->rte_sym_dev.numa_node = ndev->pdev->device.numa_node;
  	ndev->rte_sym_dev.devargs = NULL;
  	cdev = rte_cryptodev_pmd_create(name, &ndev->rte_sym_dev,
  					&init_params);
  	if (!cdev) {
  		NITROX_LOG(ERR, "Cryptodev '%s' creation failed\n", name);
  		return -ENODEV;
  	}
  
  	ndev->rte_sym_dev.name = cdev->data->name;
  	cdev->driver_id = nitrox_sym_drv_id;
  	cdev->dev_ops = &nitrox_cryptodev_ops;
  	cdev->enqueue_burst = nitrox_sym_dev_enq_burst;
  	cdev->dequeue_burst = nitrox_sym_dev_deq_burst;
  	cdev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
  		RTE_CRYPTODEV_FF_HW_ACCELERATED |
  		RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
  		RTE_CRYPTODEV_FF_IN_PLACE_SGL |
  		RTE_CRYPTODEV_FF_OOP_SGL_IN_SGL_OUT |
  		RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
  		RTE_CRYPTODEV_FF_OOP_LB_IN_SGL_OUT |
  		RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT;
  
  	ndev->sym_dev = cdev->data->dev_private;
  	ndev->sym_dev->cdev = cdev;
  	ndev->sym_dev->ndev = ndev;
  	NITROX_LOG(DEBUG, "Created cryptodev '%s', dev_id %d, drv_id %d\n",
  		   cdev->data->name, cdev->data->dev_id, nitrox_sym_drv_id);
  	return 0;
  }
  
  int
  nitrox_sym_pmd_destroy(struct nitrox_device *ndev)
  {
  	return rte_cryptodev_pmd_destroy(ndev->sym_dev->cdev);
  }
  
  static struct cryptodev_driver nitrox_crypto_drv;
  RTE_PMD_REGISTER_CRYPTO_DRIVER(nitrox_crypto_drv,
  		nitrox_rte_sym_drv,
  		nitrox_sym_drv_id);
  