diff options
Diffstat (limited to 'drivers/crypto/zuc/rte_zuc_pmd_ops.c')
| -rw-r--r-- | drivers/crypto/zuc/rte_zuc_pmd_ops.c | 342 |
1 files changed, 342 insertions, 0 deletions
diff --git a/drivers/crypto/zuc/rte_zuc_pmd_ops.c b/drivers/crypto/zuc/rte_zuc_pmd_ops.c new file mode 100644 index 00000000..2c886d51 --- /dev/null +++ b/drivers/crypto/zuc/rte_zuc_pmd_ops.c @@ -0,0 +1,342 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2016 Intel Corporation. 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 Intel Corporation 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_zuc_pmd_private.h" + +static const struct rte_cryptodev_capabilities zuc_pmd_capabilities[] = { + { /* ZUC (EIA3) */ + .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, + {.sym = { + .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH, + {.auth = { + .algo = RTE_CRYPTO_AUTH_ZUC_EIA3, + .block_size = 16, + .key_size = { + .min = 16, + .max = 16, + .increment = 0 + }, + .digest_size = { + .min = 4, + .max = 4, + .increment = 0 + }, + .aad_size = { + .min = 16, + .max = 16, + .increment = 0 + } + }, } + }, } + }, + { /* ZUC (EEA3) */ + .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC, + {.sym = { + .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER, + {.cipher = { + .algo = RTE_CRYPTO_CIPHER_ZUC_EEA3, + .block_size = 16, + .key_size = { + .min = 16, + .max = 16, + .increment = 0 + }, + .iv_size = { + .min = 16, + .max = 16, + .increment = 0 + } + }, } + }, } + }, + RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST() +}; + +/** Configure device */ +static int +zuc_pmd_config(__rte_unused struct rte_cryptodev *dev) +{ + return 0; +} + +/** Start device */ +static int +zuc_pmd_start(__rte_unused struct rte_cryptodev *dev) +{ + return 0; +} + +/** Stop device */ +static void +zuc_pmd_stop(__rte_unused struct rte_cryptodev *dev) +{ +} + +/** Close device */ +static int +zuc_pmd_close(__rte_unused struct rte_cryptodev *dev) +{ + return 0; +} + + +/** Get device statistics */ +static void +zuc_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 zuc_qp *qp = dev->data->queue_pairs[qp_id]; + + stats->enqueued_count += qp->qp_stats.enqueued_count; + stats->dequeued_count += qp->qp_stats.dequeued_count; + + stats->enqueue_err_count += qp->qp_stats.enqueue_err_count; + stats->dequeue_err_count += qp->qp_stats.dequeue_err_count; + } +} + +/** Reset device statistics */ +static void +zuc_pmd_stats_reset(struct rte_cryptodev *dev) +{ + int qp_id; + + for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) { + struct zuc_qp *qp = dev->data->queue_pairs[qp_id]; + + memset(&qp->qp_stats, 0, sizeof(qp->qp_stats)); + } +} + + +/** Get device info */ +static void +zuc_pmd_info_get(struct rte_cryptodev *dev, + struct rte_cryptodev_info *dev_info) +{ + struct zuc_private *internals = dev->data->dev_private; + + if (dev_info != NULL) { + dev_info->dev_type = dev->dev_type; + dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs; + dev_info->sym.max_nb_sessions = internals->max_nb_sessions; + dev_info->feature_flags = dev->feature_flags; + dev_info->capabilities = zuc_pmd_capabilities; + } +} + +/** Release queue pair */ +static int +zuc_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id) +{ + if (dev->data->queue_pairs[qp_id] != NULL) { + rte_free(dev->data->queue_pairs[qp_id]); + dev->data->queue_pairs[qp_id] = NULL; + } + return 0; +} + +/** set a unique name for the queue pair based on its name, dev_id and qp_id */ +static int +zuc_pmd_qp_set_unique_name(struct rte_cryptodev *dev, + struct zuc_qp *qp) +{ + unsigned n = snprintf(qp->name, sizeof(qp->name), + "zuc_pmd_%u_qp_%u", + dev->data->dev_id, qp->id); + + if (n > sizeof(qp->name)) + return -1; + + return 0; +} + +/** Create a ring to place processed ops on */ +static struct rte_ring * +zuc_pmd_qp_create_processed_ops_ring(struct zuc_qp *qp, + unsigned ring_size, int socket_id) +{ + struct rte_ring *r; + + r = rte_ring_lookup(qp->name); + if (r) { + if (r->prod.size >= ring_size) { + ZUC_LOG_INFO("Reusing existing ring %s" + " for processed packets", + qp->name); + return r; + } + + ZUC_LOG_ERR("Unable to reuse existing ring %s" + " for processed packets", + qp->name); + return NULL; + } + + return rte_ring_create(qp->name, ring_size, socket_id, + RING_F_SP_ENQ | RING_F_SC_DEQ); +} + +/** Setup a queue pair */ +static int +zuc_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id, + const struct rte_cryptodev_qp_conf *qp_conf, + int socket_id) +{ + struct zuc_qp *qp = NULL; + + /* Free memory prior to re-allocation if needed. */ + if (dev->data->queue_pairs[qp_id] != NULL) + zuc_pmd_qp_release(dev, qp_id); + + /* Allocate the queue pair data structure. */ + qp = rte_zmalloc_socket("ZUC PMD Queue Pair", sizeof(*qp), + RTE_CACHE_LINE_SIZE, socket_id); + if (qp == NULL) + return (-ENOMEM); + + qp->id = qp_id; + dev->data->queue_pairs[qp_id] = qp; + + if (zuc_pmd_qp_set_unique_name(dev, qp)) + goto qp_setup_cleanup; + + qp->processed_ops = zuc_pmd_qp_create_processed_ops_ring(qp, + qp_conf->nb_descriptors, socket_id); + if (qp->processed_ops == NULL) + goto qp_setup_cleanup; + + qp->sess_mp = dev->data->session_pool; + + memset(&qp->qp_stats, 0, sizeof(qp->qp_stats)); + + return 0; + +qp_setup_cleanup: + if (qp) + rte_free(qp); + + return -1; +} + +/** Start queue pair */ +static int +zuc_pmd_qp_start(__rte_unused struct rte_cryptodev *dev, + __rte_unused uint16_t queue_pair_id) +{ + return -ENOTSUP; +} + +/** Stop queue pair */ +static int +zuc_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 */ +static uint32_t +zuc_pmd_qp_count(struct rte_cryptodev *dev) +{ + return dev->data->nb_queue_pairs; +} + +/** Returns the size of the ZUC session structure */ +static unsigned +zuc_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused) +{ + return sizeof(struct zuc_session); +} + +/** Configure a ZUC session from a crypto xform chain */ +static void * +zuc_pmd_session_configure(struct rte_cryptodev *dev __rte_unused, + struct rte_crypto_sym_xform *xform, void *sess) +{ + if (unlikely(sess == NULL)) { + ZUC_LOG_ERR("invalid session struct"); + return NULL; + } + + if (zuc_set_session_parameters(sess, xform) != 0) { + ZUC_LOG_ERR("failed configure session parameters"); + return NULL; + } + + return sess; +} + +/** Clear the memory of session so it doesn't leave key material behind */ +static void +zuc_pmd_session_clear(struct rte_cryptodev *dev __rte_unused, void *sess) +{ + /* + * Current just resetting the whole data structure, need to investigate + * whether a more selective reset of key would be more performant + */ + if (sess) + memset(sess, 0, sizeof(struct zuc_session)); +} + +struct rte_cryptodev_ops zuc_pmd_ops = { + .dev_configure = zuc_pmd_config, + .dev_start = zuc_pmd_start, + .dev_stop = zuc_pmd_stop, + .dev_close = zuc_pmd_close, + + .stats_get = zuc_pmd_stats_get, + .stats_reset = zuc_pmd_stats_reset, + + .dev_infos_get = zuc_pmd_info_get, + + .queue_pair_setup = zuc_pmd_qp_setup, + .queue_pair_release = zuc_pmd_qp_release, + .queue_pair_start = zuc_pmd_qp_start, + .queue_pair_stop = zuc_pmd_qp_stop, + .queue_pair_count = zuc_pmd_qp_count, + + .session_get_size = zuc_pmd_session_get_size, + .session_configure = zuc_pmd_session_configure, + .session_clear = zuc_pmd_session_clear +}; + +struct rte_cryptodev_ops *rte_zuc_pmd_ops = &zuc_pmd_ops; |