numam-dpdk/drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c

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/*-
* 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 "aesni_gcm_pmd_private.h"
static const struct rte_cryptodev_capabilities aesni_gcm_pmd_capabilities[] = {
{ /* 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 = 8,
.max = 16,
.increment = 4
},
.iv_size = {
.min = 12,
.max = 12,
.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 = 8,
.max = 16,
.increment = 4
},
.aad_size = {
.min = 0,
.max = 65535,
.increment = 1
},
.iv_size = {
.min = 12,
.max = 12,
.increment = 0
}
}, }
}, }
},
RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
};
/** Configure device */
static int
aesni_gcm_pmd_config(__rte_unused struct rte_cryptodev *dev,
__rte_unused struct rte_cryptodev_config *config)
{
return 0;
}
/** Start device */
static int
aesni_gcm_pmd_start(__rte_unused struct rte_cryptodev *dev)
{
return 0;
}
/** Stop device */
static void
aesni_gcm_pmd_stop(__rte_unused struct rte_cryptodev *dev)
{
}
/** Close device */
static int
aesni_gcm_pmd_close(__rte_unused struct rte_cryptodev *dev)
{
return 0;
}
/** Get device statistics */
static void
aesni_gcm_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 aesni_gcm_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
aesni_gcm_pmd_stats_reset(struct rte_cryptodev *dev)
{
int qp_id;
for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
struct aesni_gcm_qp *qp = dev->data->queue_pairs[qp_id];
memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
}
}
/** Get device info */
static void
aesni_gcm_pmd_info_get(struct rte_cryptodev *dev,
struct rte_cryptodev_info *dev_info)
{
struct aesni_gcm_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 = aesni_gcm_pmd_capabilities;
dev_info->max_nb_queue_pairs = internals->max_nb_queue_pairs;
dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
}
}
/** Release queue pair */
static int
aesni_gcm_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 it's name, dev_id and qp_id */
static int
aesni_gcm_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
struct aesni_gcm_qp *qp)
{
unsigned n = snprintf(qp->name, sizeof(qp->name),
"aesni_gcm_pmd_%u_qp_%u",
dev->data->dev_id, qp->id);
if (n > sizeof(qp->name))
return -1;
return 0;
}
/** Create a ring to place process packets on */
static struct rte_ring *
aesni_gcm_pmd_qp_create_processed_pkts_ring(struct aesni_gcm_qp *qp,
unsigned ring_size, int socket_id)
{
struct rte_ring *r;
r = rte_ring_lookup(qp->name);
if (r) {
if (rte_ring_get_size(r) >= ring_size) {
GCM_LOG_INFO("Reusing existing ring %s for processed"
" packets", qp->name);
return r;
}
GCM_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
aesni_gcm_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 aesni_gcm_qp *qp = NULL;
struct aesni_gcm_private *internals = dev->data->dev_private;
/* Free memory prior to re-allocation if needed. */
if (dev->data->queue_pairs[qp_id] != NULL)
aesni_gcm_pmd_qp_release(dev, qp_id);
/* Allocate the queue pair data structure. */
qp = rte_zmalloc_socket("AES-NI 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 (aesni_gcm_pmd_qp_set_unique_name(dev, qp))
goto qp_setup_cleanup;
qp->ops = (const struct aesni_gcm_ops *)gcm_ops[internals->vector_mode];
qp->processed_pkts = aesni_gcm_pmd_qp_create_processed_pkts_ring(qp,
qp_conf->nb_descriptors, socket_id);
if (qp->processed_pkts == NULL)
goto qp_setup_cleanup;
qp->sess_mp = 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
aesni_gcm_pmd_qp_start(__rte_unused struct rte_cryptodev *dev,
__rte_unused uint16_t queue_pair_id)
{
return -ENOTSUP;
}
/** Stop queue pair */
static int
aesni_gcm_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
aesni_gcm_pmd_qp_count(struct rte_cryptodev *dev)
{
return dev->data->nb_queue_pairs;
}
/** Returns the size of the aesni gcm session structure */
static unsigned
aesni_gcm_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
{
return sizeof(struct aesni_gcm_session);
}
/** Configure a aesni gcm session from a crypto xform chain */
static int
aesni_gcm_pmd_session_configure(struct rte_cryptodev *dev __rte_unused,
struct rte_crypto_sym_xform *xform,
struct rte_cryptodev_sym_session *sess,
struct rte_mempool *mempool)
{
void *sess_private_data;
struct aesni_gcm_private *internals = dev->data->dev_private;
if (unlikely(sess == NULL)) {
GCM_LOG_ERR("invalid session struct");
return -1;
}
if (rte_mempool_get(mempool, &sess_private_data)) {
CDEV_LOG_ERR(
"Couldn't get object from session mempool");
return -1;
}
if (aesni_gcm_set_session_parameters(gcm_ops[internals->vector_mode],
sess_private_data, xform) != 0) {
GCM_LOG_ERR("failed configure session parameters");
/* Return session to mempool */
rte_mempool_put(mempool, sess_private_data);
return -1;
}
set_session_private_data(sess, dev->driver_id,
sess_private_data);
return 0;
}
/** Clear the memory of session so it doesn't leave key material behind */
static void
aesni_gcm_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) {
memset(sess_priv, 0, sizeof(struct aesni_gcm_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);
}
}
struct rte_cryptodev_ops aesni_gcm_pmd_ops = {
.dev_configure = aesni_gcm_pmd_config,
.dev_start = aesni_gcm_pmd_start,
.dev_stop = aesni_gcm_pmd_stop,
.dev_close = aesni_gcm_pmd_close,
.stats_get = aesni_gcm_pmd_stats_get,
.stats_reset = aesni_gcm_pmd_stats_reset,
.dev_infos_get = aesni_gcm_pmd_info_get,
.queue_pair_setup = aesni_gcm_pmd_qp_setup,
.queue_pair_release = aesni_gcm_pmd_qp_release,
.queue_pair_start = aesni_gcm_pmd_qp_start,
.queue_pair_stop = aesni_gcm_pmd_qp_stop,
.queue_pair_count = aesni_gcm_pmd_qp_count,
.session_get_size = aesni_gcm_pmd_session_get_size,
.session_configure = aesni_gcm_pmd_session_configure,
.session_clear = aesni_gcm_pmd_session_clear
};
struct rte_cryptodev_ops *rte_aesni_gcm_pmd_ops = &aesni_gcm_pmd_ops;