diff options
Diffstat (limited to 'drivers/crypto/mvsam/rte_mrvl_pmd.c')
| -rw-r--r-- | drivers/crypto/mvsam/rte_mrvl_pmd.c | 937 |
1 files changed, 937 insertions, 0 deletions
diff --git a/drivers/crypto/mvsam/rte_mrvl_pmd.c b/drivers/crypto/mvsam/rte_mrvl_pmd.c new file mode 100644 index 00000000..73eff757 --- /dev/null +++ b/drivers/crypto/mvsam/rte_mrvl_pmd.c @@ -0,0 +1,937 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2017 Marvell International Ltd. + * Copyright(c) 2017 Semihalf. + * All rights reserved. + */ + +#include <rte_common.h> +#include <rte_hexdump.h> +#include <rte_cryptodev.h> +#include <rte_cryptodev_pmd.h> +#include <rte_bus_vdev.h> +#include <rte_malloc.h> +#include <rte_cpuflags.h> + +#include "rte_mrvl_pmd_private.h" + +#define MRVL_MUSDK_DMA_MEMSIZE 41943040 + +#define MRVL_PMD_MAX_NB_SESS_ARG ("max_nb_sessions") +#define MRVL_PMD_DEFAULT_MAX_NB_SESSIONS 2048 + +static uint8_t cryptodev_driver_id; + +struct mrvl_pmd_init_params { + struct rte_cryptodev_pmd_init_params common; + uint32_t max_nb_sessions; +}; + +const char *mrvl_pmd_valid_params[] = { + RTE_CRYPTODEV_PMD_NAME_ARG, + RTE_CRYPTODEV_PMD_MAX_NB_QP_ARG, + RTE_CRYPTODEV_PMD_SOCKET_ID_ARG, + MRVL_PMD_MAX_NB_SESS_ARG +}; + +/** + * Flag if particular crypto algorithm is supported by PMD/MUSDK. + * + * The idea is to have Not Supported value as default (0). + * This way we need only to define proper map sizes, + * non-initialized entries will be by default not supported. + */ +enum algo_supported { + ALGO_NOT_SUPPORTED = 0, + ALGO_SUPPORTED = 1, +}; + +/** Map elements for cipher mapping.*/ +struct cipher_params_mapping { + enum algo_supported supported; /**< On/Off switch */ + enum sam_cipher_alg cipher_alg; /**< Cipher algorithm */ + enum sam_cipher_mode cipher_mode; /**< Cipher mode */ + unsigned int max_key_len; /**< Maximum key length (in bytes)*/ +} +/* We want to squeeze in multiple maps into the cache line. */ +__rte_aligned(32); + +/** Map elements for auth mapping.*/ +struct auth_params_mapping { + enum algo_supported supported; /**< On/off switch */ + enum sam_auth_alg auth_alg; /**< Auth algorithm */ +} +/* We want to squeeze in multiple maps into the cache line. */ +__rte_aligned(32); + +/** + * Map of supported cipher algorithms. + */ +static const +struct cipher_params_mapping cipher_map[RTE_CRYPTO_CIPHER_LIST_END] = { + [RTE_CRYPTO_CIPHER_3DES_CBC] = { + .supported = ALGO_SUPPORTED, + .cipher_alg = SAM_CIPHER_3DES, + .cipher_mode = SAM_CIPHER_CBC, + .max_key_len = BITS2BYTES(192) }, + [RTE_CRYPTO_CIPHER_3DES_CTR] = { + .supported = ALGO_SUPPORTED, + .cipher_alg = SAM_CIPHER_3DES, + .cipher_mode = SAM_CIPHER_CTR, + .max_key_len = BITS2BYTES(192) }, + [RTE_CRYPTO_CIPHER_3DES_ECB] = { + .supported = ALGO_SUPPORTED, + .cipher_alg = SAM_CIPHER_3DES, + .cipher_mode = SAM_CIPHER_ECB, + .max_key_len = BITS2BYTES(192) }, + [RTE_CRYPTO_CIPHER_AES_CBC] = { + .supported = ALGO_SUPPORTED, + .cipher_alg = SAM_CIPHER_AES, + .cipher_mode = SAM_CIPHER_CBC, + .max_key_len = BITS2BYTES(256) }, + [RTE_CRYPTO_CIPHER_AES_CTR] = { + .supported = ALGO_SUPPORTED, + .cipher_alg = SAM_CIPHER_AES, + .cipher_mode = SAM_CIPHER_CTR, + .max_key_len = BITS2BYTES(256) }, +}; + +/** + * Map of supported auth algorithms. + */ +static const +struct auth_params_mapping auth_map[RTE_CRYPTO_AUTH_LIST_END] = { + [RTE_CRYPTO_AUTH_MD5_HMAC] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HMAC_MD5 }, + [RTE_CRYPTO_AUTH_MD5] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HASH_MD5 }, + [RTE_CRYPTO_AUTH_SHA1_HMAC] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HMAC_SHA1 }, + [RTE_CRYPTO_AUTH_SHA1] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HASH_SHA1 }, + [RTE_CRYPTO_AUTH_SHA224] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HASH_SHA2_224 }, + [RTE_CRYPTO_AUTH_SHA256_HMAC] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HMAC_SHA2_256 }, + [RTE_CRYPTO_AUTH_SHA256] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HASH_SHA2_256 }, + [RTE_CRYPTO_AUTH_SHA384_HMAC] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HMAC_SHA2_384 }, + [RTE_CRYPTO_AUTH_SHA384] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HASH_SHA2_384 }, + [RTE_CRYPTO_AUTH_SHA512_HMAC] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HMAC_SHA2_512 }, + [RTE_CRYPTO_AUTH_SHA512] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_HASH_SHA2_512 }, + [RTE_CRYPTO_AUTH_AES_GMAC] = { + .supported = ALGO_SUPPORTED, + .auth_alg = SAM_AUTH_AES_GMAC }, +}; + +/** + * Map of supported aead algorithms. + */ +static const +struct cipher_params_mapping aead_map[RTE_CRYPTO_AEAD_LIST_END] = { + [RTE_CRYPTO_AEAD_AES_GCM] = { + .supported = ALGO_SUPPORTED, + .cipher_alg = SAM_CIPHER_AES, + .cipher_mode = SAM_CIPHER_GCM, + .max_key_len = BITS2BYTES(256) }, +}; + +/* + *----------------------------------------------------------------------------- + * Forward declarations. + *----------------------------------------------------------------------------- + */ +static int cryptodev_mrvl_crypto_uninit(struct rte_vdev_device *vdev); + +/* + *----------------------------------------------------------------------------- + * Session Preparation. + *----------------------------------------------------------------------------- + */ + +/** + * Get xform chain order. + * + * @param xform Pointer to configuration structure chain for crypto operations. + * @returns Order of crypto operations. + */ +static enum mrvl_crypto_chain_order +mrvl_crypto_get_chain_order(const struct rte_crypto_sym_xform *xform) +{ + /* Currently, Marvell supports max 2 operations in chain */ + if (xform->next != NULL && xform->next->next != NULL) + return MRVL_CRYPTO_CHAIN_NOT_SUPPORTED; + + if (xform->next != NULL) { + if ((xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) && + (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)) + return MRVL_CRYPTO_CHAIN_AUTH_CIPHER; + + if ((xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) && + (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)) + return MRVL_CRYPTO_CHAIN_CIPHER_AUTH; + } else { + if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) + return MRVL_CRYPTO_CHAIN_AUTH_ONLY; + + if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) + return MRVL_CRYPTO_CHAIN_CIPHER_ONLY; + + if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) + return MRVL_CRYPTO_CHAIN_COMBINED; + } + return MRVL_CRYPTO_CHAIN_NOT_SUPPORTED; +} + +/** + * Set session parameters for cipher part. + * + * @param sess Crypto session pointer. + * @param cipher_xform Pointer to configuration structure for cipher operations. + * @returns 0 in case of success, negative value otherwise. + */ +static int +mrvl_crypto_set_cipher_session_parameters(struct mrvl_crypto_session *sess, + const struct rte_crypto_sym_xform *cipher_xform) +{ + /* Make sure we've got proper struct */ + if (cipher_xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) { + MRVL_CRYPTO_LOG_ERR("Wrong xform struct provided!"); + return -EINVAL; + } + + /* See if map data is present and valid */ + if ((cipher_xform->cipher.algo > RTE_DIM(cipher_map)) || + (cipher_map[cipher_xform->cipher.algo].supported + != ALGO_SUPPORTED)) { + MRVL_CRYPTO_LOG_ERR("Cipher algorithm not supported!"); + return -EINVAL; + } + + sess->cipher_iv_offset = cipher_xform->cipher.iv.offset; + + sess->sam_sess_params.dir = + (cipher_xform->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT) ? + SAM_DIR_ENCRYPT : SAM_DIR_DECRYPT; + sess->sam_sess_params.cipher_alg = + cipher_map[cipher_xform->cipher.algo].cipher_alg; + sess->sam_sess_params.cipher_mode = + cipher_map[cipher_xform->cipher.algo].cipher_mode; + + /* Assume IV will be passed together with data. */ + sess->sam_sess_params.cipher_iv = NULL; + + /* Get max key length. */ + if (cipher_xform->cipher.key.length > + cipher_map[cipher_xform->cipher.algo].max_key_len) { + MRVL_CRYPTO_LOG_ERR("Wrong key length!"); + return -EINVAL; + } + + sess->sam_sess_params.cipher_key_len = cipher_xform->cipher.key.length; + sess->sam_sess_params.cipher_key = cipher_xform->cipher.key.data; + + return 0; +} + +/** + * Set session parameters for authentication part. + * + * @param sess Crypto session pointer. + * @param auth_xform Pointer to configuration structure for auth operations. + * @returns 0 in case of success, negative value otherwise. + */ +static int +mrvl_crypto_set_auth_session_parameters(struct mrvl_crypto_session *sess, + const struct rte_crypto_sym_xform *auth_xform) +{ + /* Make sure we've got proper struct */ + if (auth_xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) { + MRVL_CRYPTO_LOG_ERR("Wrong xform struct provided!"); + return -EINVAL; + } + + /* See if map data is present and valid */ + if ((auth_xform->auth.algo > RTE_DIM(auth_map)) || + (auth_map[auth_xform->auth.algo].supported != ALGO_SUPPORTED)) { + MRVL_CRYPTO_LOG_ERR("Auth algorithm not supported!"); + return -EINVAL; + } + + sess->sam_sess_params.dir = + (auth_xform->auth.op == RTE_CRYPTO_AUTH_OP_GENERATE) ? + SAM_DIR_ENCRYPT : SAM_DIR_DECRYPT; + sess->sam_sess_params.auth_alg = + auth_map[auth_xform->auth.algo].auth_alg; + sess->sam_sess_params.u.basic.auth_icv_len = + auth_xform->auth.digest_length; + /* auth_key must be NULL if auth algorithm does not use HMAC */ + sess->sam_sess_params.auth_key = auth_xform->auth.key.length ? + auth_xform->auth.key.data : NULL; + sess->sam_sess_params.auth_key_len = auth_xform->auth.key.length; + + return 0; +} + +/** + * Set session parameters for aead part. + * + * @param sess Crypto session pointer. + * @param aead_xform Pointer to configuration structure for aead operations. + * @returns 0 in case of success, negative value otherwise. + */ +static int +mrvl_crypto_set_aead_session_parameters(struct mrvl_crypto_session *sess, + const struct rte_crypto_sym_xform *aead_xform) +{ + /* Make sure we've got proper struct */ + if (aead_xform->type != RTE_CRYPTO_SYM_XFORM_AEAD) { + MRVL_CRYPTO_LOG_ERR("Wrong xform struct provided!"); + return -EINVAL; + } + + /* See if map data is present and valid */ + if ((aead_xform->aead.algo > RTE_DIM(aead_map)) || + (aead_map[aead_xform->aead.algo].supported + != ALGO_SUPPORTED)) { + MRVL_CRYPTO_LOG_ERR("AEAD algorithm not supported!"); + return -EINVAL; + } + + sess->sam_sess_params.dir = + (aead_xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT) ? + SAM_DIR_ENCRYPT : SAM_DIR_DECRYPT; + sess->sam_sess_params.cipher_alg = + aead_map[aead_xform->aead.algo].cipher_alg; + sess->sam_sess_params.cipher_mode = + aead_map[aead_xform->aead.algo].cipher_mode; + + /* Assume IV will be passed together with data. */ + sess->sam_sess_params.cipher_iv = NULL; + + /* Get max key length. */ + if (aead_xform->aead.key.length > + aead_map[aead_xform->aead.algo].max_key_len) { + MRVL_CRYPTO_LOG_ERR("Wrong key length!"); + return -EINVAL; + } + + sess->sam_sess_params.cipher_key = aead_xform->aead.key.data; + sess->sam_sess_params.cipher_key_len = aead_xform->aead.key.length; + + if (sess->sam_sess_params.cipher_mode == SAM_CIPHER_GCM) + sess->sam_sess_params.auth_alg = SAM_AUTH_AES_GCM; + + sess->sam_sess_params.u.basic.auth_icv_len = + aead_xform->aead.digest_length; + + sess->sam_sess_params.u.basic.auth_aad_len = + aead_xform->aead.aad_length; + + return 0; +} + +/** + * Parse crypto transform chain and setup session parameters. + * + * @param dev Pointer to crypto device + * @param sess Poiner to crypto session + * @param xform Pointer to configuration structure chain for crypto operations. + * @returns 0 in case of success, negative value otherwise. + */ +int +mrvl_crypto_set_session_parameters(struct mrvl_crypto_session *sess, + const struct rte_crypto_sym_xform *xform) +{ + const struct rte_crypto_sym_xform *cipher_xform = NULL; + const struct rte_crypto_sym_xform *auth_xform = NULL; + const struct rte_crypto_sym_xform *aead_xform = NULL; + + /* Filter out spurious/broken requests */ + if (xform == NULL) + return -EINVAL; + + sess->chain_order = mrvl_crypto_get_chain_order(xform); + switch (sess->chain_order) { + case MRVL_CRYPTO_CHAIN_CIPHER_AUTH: + cipher_xform = xform; + auth_xform = xform->next; + break; + case MRVL_CRYPTO_CHAIN_AUTH_CIPHER: + auth_xform = xform; + cipher_xform = xform->next; + break; + case MRVL_CRYPTO_CHAIN_CIPHER_ONLY: + cipher_xform = xform; + break; + case MRVL_CRYPTO_CHAIN_AUTH_ONLY: + auth_xform = xform; + break; + case MRVL_CRYPTO_CHAIN_COMBINED: + aead_xform = xform; + break; + default: + return -EINVAL; + } + + if ((cipher_xform != NULL) && + (mrvl_crypto_set_cipher_session_parameters( + sess, cipher_xform) < 0)) { + MRVL_CRYPTO_LOG_ERR("Invalid/unsupported cipher parameters"); + return -EINVAL; + } + + if ((auth_xform != NULL) && + (mrvl_crypto_set_auth_session_parameters( + sess, auth_xform) < 0)) { + MRVL_CRYPTO_LOG_ERR("Invalid/unsupported auth parameters"); + return -EINVAL; + } + + if ((aead_xform != NULL) && + (mrvl_crypto_set_aead_session_parameters( + sess, aead_xform) < 0)) { + MRVL_CRYPTO_LOG_ERR("Invalid/unsupported aead parameters"); + return -EINVAL; + } + + return 0; +} + +/* + *----------------------------------------------------------------------------- + * Process Operations + *----------------------------------------------------------------------------- + */ + +/** + * Prepare a single request. + * + * This function basically translates DPDK crypto request into one + * understandable by MUDSK's SAM. If this is a first request in a session, + * it starts the session. + * + * @param request Pointer to pre-allocated && reset request buffer [Out]. + * @param src_bd Pointer to pre-allocated source descriptor [Out]. + * @param dst_bd Pointer to pre-allocated destination descriptor [Out]. + * @param op Pointer to DPDK crypto operation struct [In]. + */ +static inline int +mrvl_request_prepare(struct sam_cio_op_params *request, + struct sam_buf_info *src_bd, + struct sam_buf_info *dst_bd, + struct rte_crypto_op *op) +{ + struct mrvl_crypto_session *sess; + struct rte_mbuf *dst_mbuf; + uint8_t *digest; + + if (unlikely(op->sess_type == RTE_CRYPTO_OP_SESSIONLESS)) { + MRVL_CRYPTO_LOG_ERR("MRVL CRYPTO PMD only supports session " + "oriented requests, op (%p) is sessionless.", + op); + return -EINVAL; + } + + sess = (struct mrvl_crypto_session *)get_sym_session_private_data( + op->sym->session, cryptodev_driver_id); + if (unlikely(sess == NULL)) { + MRVL_CRYPTO_LOG_ERR("Session was not created for this device"); + return -EINVAL; + } + + /* + * If application delivered us null dst buffer, it means it expects + * us to deliver the result in src buffer. + */ + dst_mbuf = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src; + + request->sa = sess->sam_sess; + request->cookie = op; + + /* Single buffers only, sorry. */ + request->num_bufs = 1; + request->src = src_bd; + src_bd->vaddr = rte_pktmbuf_mtod(op->sym->m_src, void *); + src_bd->paddr = rte_pktmbuf_iova(op->sym->m_src); + src_bd->len = rte_pktmbuf_data_len(op->sym->m_src); + + /* Empty source. */ + if (rte_pktmbuf_data_len(op->sym->m_src) == 0) { + /* EIP does not support 0 length buffers. */ + MRVL_CRYPTO_LOG_ERR("Buffer length == 0 not supported!"); + return -1; + } + + /* Empty destination. */ + if (rte_pktmbuf_data_len(dst_mbuf) == 0) { + /* Make dst buffer fit at least source data. */ + if (rte_pktmbuf_append(dst_mbuf, + rte_pktmbuf_data_len(op->sym->m_src)) == NULL) { + MRVL_CRYPTO_LOG_ERR("Unable to set big enough dst buffer!"); + return -1; + } + } + + request->dst = dst_bd; + dst_bd->vaddr = rte_pktmbuf_mtod(dst_mbuf, void *); + dst_bd->paddr = rte_pktmbuf_iova(dst_mbuf); + + /* + * We can use all available space in dst_mbuf, + * not only what's used currently. + */ + dst_bd->len = dst_mbuf->buf_len - rte_pktmbuf_headroom(dst_mbuf); + + if (sess->chain_order == MRVL_CRYPTO_CHAIN_COMBINED) { + request->cipher_len = op->sym->aead.data.length; + request->cipher_offset = op->sym->aead.data.offset; + request->cipher_iv = rte_crypto_op_ctod_offset(op, uint8_t *, + sess->cipher_iv_offset); + + request->auth_aad = op->sym->aead.aad.data; + request->auth_offset = request->cipher_offset; + request->auth_len = request->cipher_len; + } else { + request->cipher_len = op->sym->cipher.data.length; + request->cipher_offset = op->sym->cipher.data.offset; + request->cipher_iv = rte_crypto_op_ctod_offset(op, uint8_t *, + sess->cipher_iv_offset); + + request->auth_offset = op->sym->auth.data.offset; + request->auth_len = op->sym->auth.data.length; + } + + digest = sess->chain_order == MRVL_CRYPTO_CHAIN_COMBINED ? + op->sym->aead.digest.data : op->sym->auth.digest.data; + if (digest == NULL) { + /* No auth - no worry. */ + return 0; + } + + request->auth_icv_offset = request->auth_offset + request->auth_len; + + /* + * EIP supports only scenarios where ICV(digest buffer) is placed at + * auth_icv_offset. Any other placement means risking errors. + */ + if (sess->sam_sess_params.dir == SAM_DIR_ENCRYPT) { + /* + * This should be the most common case anyway, + * EIP will overwrite DST buffer at auth_icv_offset. + */ + if (rte_pktmbuf_mtod_offset( + dst_mbuf, uint8_t *, + request->auth_icv_offset) == digest) { + return 0; + } + } else {/* sess->sam_sess_params.dir == SAM_DIR_DECRYPT */ + /* + * EIP will look for digest at auth_icv_offset + * offset in SRC buffer. + */ + if (rte_pktmbuf_mtod_offset( + op->sym->m_src, uint8_t *, + request->auth_icv_offset) == digest) { + return 0; + } + } + + /* + * If we landed here it means that digest pointer is + * at different than expected place. + */ + return -1; +} + +/* + *----------------------------------------------------------------------------- + * PMD Framework handlers + *----------------------------------------------------------------------------- + */ + +/** + * Enqueue burst. + * + * @param queue_pair Pointer to queue pair. + * @param ops Pointer to ops requests array. + * @param nb_ops Number of elements in ops requests array. + * @returns Number of elements consumed from ops. + */ +static uint16_t +mrvl_crypto_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops, + uint16_t nb_ops) +{ + uint16_t iter_ops = 0; + uint16_t to_enq = 0; + uint16_t consumed = 0; + int ret; + struct sam_cio_op_params requests[nb_ops]; + /* + * DPDK uses single fragment buffers, so we can KISS descriptors. + * SAM does not store bd pointers, so on-stack scope will be enough. + */ + struct sam_buf_info src_bd[nb_ops]; + struct sam_buf_info dst_bd[nb_ops]; + struct mrvl_crypto_qp *qp = (struct mrvl_crypto_qp *)queue_pair; + + if (nb_ops == 0) + return 0; + + /* Prepare the burst. */ + memset(&requests, 0, sizeof(requests)); + + /* Iterate through */ + for (; iter_ops < nb_ops; ++iter_ops) { + if (mrvl_request_prepare(&requests[iter_ops], + &src_bd[iter_ops], + &dst_bd[iter_ops], + ops[iter_ops]) < 0) { + MRVL_CRYPTO_LOG_ERR( + "Error while parameters preparation!"); + qp->stats.enqueue_err_count++; + ops[iter_ops]->status = RTE_CRYPTO_OP_STATUS_ERROR; + + /* + * Number of handled ops is increased + * (even if the result of handling is error). + */ + ++consumed; + break; + } + + ops[iter_ops]->status = + RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; + + /* Increase the number of ops to enqueue. */ + ++to_enq; + } /* for (; iter_ops < nb_ops;... */ + + if (to_enq > 0) { + /* Send the burst */ + ret = sam_cio_enq(qp->cio, requests, &to_enq); + consumed += to_enq; + if (ret < 0) { + /* + * Trust SAM that in this case returned value will be at + * some point correct (now it is returned unmodified). + */ + qp->stats.enqueue_err_count += to_enq; + for (iter_ops = 0; iter_ops < to_enq; ++iter_ops) + ops[iter_ops]->status = + RTE_CRYPTO_OP_STATUS_ERROR; + } + } + + qp->stats.enqueued_count += to_enq; + return consumed; +} + +/** + * Dequeue burst. + * + * @param queue_pair Pointer to queue pair. + * @param ops Pointer to ops requests array. + * @param nb_ops Number of elements in ops requests array. + * @returns Number of elements dequeued. + */ +static uint16_t +mrvl_crypto_pmd_dequeue_burst(void *queue_pair, + struct rte_crypto_op **ops, + uint16_t nb_ops) +{ + int ret; + struct mrvl_crypto_qp *qp = queue_pair; + struct sam_cio *cio = qp->cio; + struct sam_cio_op_result results[nb_ops]; + uint16_t i; + + ret = sam_cio_deq(cio, results, &nb_ops); + if (ret < 0) { + /* Count all dequeued as error. */ + qp->stats.dequeue_err_count += nb_ops; + + /* But act as they were dequeued anyway*/ + qp->stats.dequeued_count += nb_ops; + + return 0; + } + + /* Unpack and check results. */ + for (i = 0; i < nb_ops; ++i) { + ops[i] = results[i].cookie; + + switch (results[i].status) { + case SAM_CIO_OK: + ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS; + break; + case SAM_CIO_ERR_ICV: + MRVL_CRYPTO_LOG_DBG("CIO returned SAM_CIO_ERR_ICV."); + ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED; + break; + default: + MRVL_CRYPTO_LOG_DBG( + "CIO returned Error: %d", results[i].status); + ops[i]->status = RTE_CRYPTO_OP_STATUS_ERROR; + break; + } + } + + qp->stats.dequeued_count += nb_ops; + return nb_ops; +} + +/** + * Create a new crypto device. + * + * @param name Driver name. + * @param vdev Pointer to device structure. + * @param init_params Pointer to initialization parameters. + * @returns 0 in case of success, negative value otherwise. + */ +static int +cryptodev_mrvl_crypto_create(const char *name, + struct rte_vdev_device *vdev, + struct mrvl_pmd_init_params *init_params) +{ + struct rte_cryptodev *dev; + struct mrvl_crypto_private *internals; + struct sam_init_params sam_params; + int ret; + + dev = rte_cryptodev_pmd_create(name, &vdev->device, + &init_params->common); + if (dev == NULL) { + MRVL_CRYPTO_LOG_ERR("failed to create cryptodev vdev"); + goto init_error; + } + + dev->driver_id = cryptodev_driver_id; + dev->dev_ops = rte_mrvl_crypto_pmd_ops; + + /* Register rx/tx burst functions for data path. */ + dev->enqueue_burst = mrvl_crypto_pmd_enqueue_burst; + dev->dequeue_burst = mrvl_crypto_pmd_dequeue_burst; + + dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO | + RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING | + RTE_CRYPTODEV_FF_HW_ACCELERATED; + + /* Set vector instructions mode supported */ + internals = dev->data->dev_private; + + internals->max_nb_qpairs = init_params->common.max_nb_queue_pairs; + internals->max_nb_sessions = init_params->max_nb_sessions; + + /* + * ret == -EEXIST is correct, it means DMA + * has been already initialized. + */ + ret = mv_sys_dma_mem_init(MRVL_MUSDK_DMA_MEMSIZE); + if (ret < 0) { + if (ret != -EEXIST) + return ret; + + MRVL_CRYPTO_LOG_INFO( + "DMA memory has been already initialized by a different driver."); + } + + sam_params.max_num_sessions = internals->max_nb_sessions; + + return sam_init(&sam_params); + +init_error: + MRVL_CRYPTO_LOG_ERR( + "driver %s: %s failed", init_params->common.name, __func__); + + cryptodev_mrvl_crypto_uninit(vdev); + return -EFAULT; +} + +/** Parse integer from integer argument */ +static int +parse_integer_arg(const char *key __rte_unused, + const char *value, void *extra_args) +{ + int *i = (int *) extra_args; + + *i = atoi(value); + if (*i < 0) { + MRVL_CRYPTO_LOG_ERR("Argument has to be positive.\n"); + return -EINVAL; + } + + return 0; +} + +/** Parse name */ +static int +parse_name_arg(const char *key __rte_unused, + const char *value, void *extra_args) +{ + struct rte_cryptodev_pmd_init_params *params = extra_args; + + if (strlen(value) >= RTE_CRYPTODEV_NAME_MAX_LEN - 1) { + MRVL_CRYPTO_LOG_ERR("Invalid name %s, should be less than " + "%u bytes.\n", value, + RTE_CRYPTODEV_NAME_MAX_LEN - 1); + return -EINVAL; + } + + strncpy(params->name, value, RTE_CRYPTODEV_NAME_MAX_LEN); + + return 0; +} + +static int +mrvl_pmd_parse_input_args(struct mrvl_pmd_init_params *params, + const char *input_args) +{ + struct rte_kvargs *kvlist = NULL; + int ret = 0; + + if (params == NULL) + return -EINVAL; + + if (input_args) { + kvlist = rte_kvargs_parse(input_args, + mrvl_pmd_valid_params); + if (kvlist == NULL) + return -1; + + /* Common VDEV parameters */ + ret = rte_kvargs_process(kvlist, + RTE_CRYPTODEV_PMD_MAX_NB_QP_ARG, + &parse_integer_arg, + ¶ms->common.max_nb_queue_pairs); + if (ret < 0) + goto free_kvlist; + + ret = rte_kvargs_process(kvlist, + RTE_CRYPTODEV_PMD_SOCKET_ID_ARG, + &parse_integer_arg, + ¶ms->common.socket_id); + if (ret < 0) + goto free_kvlist; + + ret = rte_kvargs_process(kvlist, + RTE_CRYPTODEV_PMD_NAME_ARG, + &parse_name_arg, + ¶ms->common); + if (ret < 0) + goto free_kvlist; + + ret = rte_kvargs_process(kvlist, + MRVL_PMD_MAX_NB_SESS_ARG, + &parse_integer_arg, + params); + if (ret < 0) + goto free_kvlist; + + } + +free_kvlist: + rte_kvargs_free(kvlist); + return ret; +} + +/** + * Initialize the crypto device. + * + * @param vdev Pointer to device structure. + * @returns 0 in case of success, negative value otherwise. + */ +static int +cryptodev_mrvl_crypto_init(struct rte_vdev_device *vdev) +{ + struct mrvl_pmd_init_params init_params = { + .common = { + .name = "", + .private_data_size = + sizeof(struct mrvl_crypto_private), + .max_nb_queue_pairs = + sam_get_num_inst() * SAM_HW_RING_NUM, + .socket_id = rte_socket_id() + }, + .max_nb_sessions = MRVL_PMD_DEFAULT_MAX_NB_SESSIONS + }; + + const char *name, *args; + int ret; + + name = rte_vdev_device_name(vdev); + if (name == NULL) + return -EINVAL; + args = rte_vdev_device_args(vdev); + + ret = mrvl_pmd_parse_input_args(&init_params, args); + if (ret) { + RTE_LOG(ERR, PMD, + "Failed to parse initialisation arguments[%s]\n", + args); + return -EINVAL; + } + + return cryptodev_mrvl_crypto_create(name, vdev, &init_params); +} + +/** + * Uninitialize the crypto device + * + * @param vdev Pointer to device structure. + * @returns 0 in case of success, negative value otherwise. + */ +static int +cryptodev_mrvl_crypto_uninit(struct rte_vdev_device *vdev) +{ + struct rte_cryptodev *cryptodev; + const char *name = rte_vdev_device_name(vdev); + + if (name == NULL) + return -EINVAL; + + RTE_LOG(INFO, PMD, + "Closing Marvell crypto device %s on numa socket %u\n", + name, rte_socket_id()); + + sam_deinit(); + + cryptodev = rte_cryptodev_pmd_get_named_dev(name); + if (cryptodev == NULL) + return -ENODEV; + + return rte_cryptodev_pmd_destroy(cryptodev); +} + +/** + * Basic driver handlers for use in the constructor. + */ +static struct rte_vdev_driver cryptodev_mrvl_pmd_drv = { + .probe = cryptodev_mrvl_crypto_init, + .remove = cryptodev_mrvl_crypto_uninit +}; + +static struct cryptodev_driver mrvl_crypto_drv; + +/* Register the driver in constructor. */ +RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_MRVL_PMD, cryptodev_mrvl_pmd_drv); +RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_MRVL_PMD, + "max_nb_queue_pairs=<int> " + "max_nb_sessions=<int> " + "socket_id=<int>"); +RTE_PMD_REGISTER_CRYPTO_DRIVER(mrvl_crypto_drv, cryptodev_mrvl_pmd_drv.driver, + cryptodev_driver_id); |