--- /dev/null
+/*-
+ * 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 "null_crypto_pmd_private.h"
+
+static const struct rte_cryptodev_capabilities null_crypto_pmd_capabilities[] = {
+ { /* NULL (AUTH) */
+ .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+ {.sym = {
+ .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
+ {.auth = {
+ .algo = RTE_CRYPTO_AUTH_NULL,
+ .block_size = 1,
+ .key_size = {
+ .min = 0,
+ .max = 0,
+ .increment = 0
+ },
+ .digest_size = {
+ .min = 0,
+ .max = 0,
+ .increment = 0
+ },
+ .aad_size = { 0 }
+ }, },
+ }, },
+ },
+ { /* NULL (CIPHER) */
+ .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+ {.sym = {
+ .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+ {.cipher = {
+ .algo = RTE_CRYPTO_CIPHER_NULL,
+ .block_size = 1,
+ .key_size = {
+ .min = 0,
+ .max = 0,
+ .increment = 8
+ },
+ .iv_size = {
+ .min = 0,
+ .max = 0,
+ .increment = 0
+ }
+ }, },
+ }, }
+ },
+ RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
+};
+
+/** Configure device */
+static int
+null_crypto_pmd_config(__rte_unused struct rte_cryptodev *dev)
+{
+ return 0;
+}
+
+/** Start device */
+static int
+null_crypto_pmd_start(__rte_unused struct rte_cryptodev *dev)
+{
+ return 0;
+}
+
+/** Stop device */
+static void
+null_crypto_pmd_stop(__rte_unused struct rte_cryptodev *dev)
+{
+}
+
+/** Close device */
+static int
+null_crypto_pmd_close(__rte_unused struct rte_cryptodev *dev)
+{
+ return 0;
+}
+
+/** Get device statistics */
+static void
+null_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 null_crypto_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
+null_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 null_crypto_qp *qp = dev->data->queue_pairs[qp_id];
+
+ memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
+ }
+}
+
+
+/** Get device info */
+static void
+null_crypto_pmd_info_get(struct rte_cryptodev *dev,
+ struct rte_cryptodev_info *dev_info)
+{
+ struct null_crypto_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_qpairs;
+ dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
+ dev_info->feature_flags = dev->feature_flags;
+ dev_info->capabilities = null_crypto_pmd_capabilities;
+ }
+}
+
+/** Release queue pair */
+static int
+null_crypto_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
+null_crypto_pmd_qp_set_unique_name(struct rte_cryptodev *dev,
+ struct null_crypto_qp *qp)
+{
+ unsigned n = snprintf(qp->name, sizeof(qp->name),
+ "null_crypto_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 *
+null_crypto_pmd_qp_create_processed_pkts_ring(struct null_crypto_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) {
+ NULL_CRYPTO_LOG_INFO(
+ "Reusing existing ring %s for processed packets",
+ qp->name);
+ return r;
+ }
+
+ NULL_CRYPTO_LOG_INFO(
+ "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
+null_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
+ const struct rte_cryptodev_qp_conf *qp_conf,
+ int socket_id)
+{
+ struct null_crypto_private *internals = dev->data->dev_private;
+ struct null_crypto_qp *qp;
+ int retval;
+
+ if (qp_id >= internals->max_nb_qpairs) {
+ NULL_CRYPTO_LOG_ERR("Invalid qp_id %u, greater than maximum "
+ "number of queue pairs supported (%u).",
+ qp_id, internals->max_nb_qpairs);
+ return (-EINVAL);
+ }
+
+ /* Free memory prior to re-allocation if needed. */
+ if (dev->data->queue_pairs[qp_id] != NULL)
+ null_crypto_pmd_qp_release(dev, qp_id);
+
+ /* Allocate the queue pair data structure. */
+ qp = rte_zmalloc_socket("Null Crypto PMD Queue Pair", sizeof(*qp),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (qp == NULL) {
+ NULL_CRYPTO_LOG_ERR("Failed to allocate queue pair memory");
+ return (-ENOMEM);
+ }
+
+ qp->id = qp_id;
+ dev->data->queue_pairs[qp_id] = qp;
+
+ retval = null_crypto_pmd_qp_set_unique_name(dev, qp);
+ if (retval) {
+ NULL_CRYPTO_LOG_ERR("Failed to create unique name for null "
+ "crypto device");
+ goto qp_setup_cleanup;
+ }
+
+ qp->processed_pkts = null_crypto_pmd_qp_create_processed_pkts_ring(qp,
+ qp_conf->nb_descriptors, socket_id);
+ if (qp->processed_pkts == NULL) {
+ NULL_CRYPTO_LOG_ERR("Failed to create unique name for null "
+ "crypto device");
+ 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
+null_crypto_pmd_qp_start(__rte_unused struct rte_cryptodev *dev,
+ __rte_unused uint16_t queue_pair_id)
+{
+ return -ENOTSUP;
+}
+
+/** Stop queue pair */
+static int
+null_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 */
+static uint32_t
+null_crypto_pmd_qp_count(struct rte_cryptodev *dev)
+{
+ return dev->data->nb_queue_pairs;
+}
+
+/** Returns the size of the NULL crypto session structure */
+static unsigned
+null_crypto_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
+{
+ return sizeof(struct null_crypto_session);
+}
+
+/** Configure a null crypto session from a crypto xform chain */
+static void *
+null_crypto_pmd_session_configure(struct rte_cryptodev *dev __rte_unused,
+ struct rte_crypto_sym_xform *xform, void *sess)
+{
+ int retval;
+
+ if (unlikely(sess == NULL)) {
+ NULL_CRYPTO_LOG_ERR("invalid session struct");
+ return NULL;
+ }
+ retval = null_crypto_set_session_parameters(
+ (struct null_crypto_session *)sess, xform);
+ if (retval != 0) {
+ NULL_CRYPTO_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
+null_crypto_pmd_session_clear(struct rte_cryptodev *dev __rte_unused,
+ void *sess)
+{
+ if (sess)
+ memset(sess, 0, sizeof(struct null_crypto_session));
+}
+
+struct rte_cryptodev_ops pmd_ops = {
+ .dev_configure = null_crypto_pmd_config,
+ .dev_start = null_crypto_pmd_start,
+ .dev_stop = null_crypto_pmd_stop,
+ .dev_close = null_crypto_pmd_close,
+
+ .stats_get = null_crypto_pmd_stats_get,
+ .stats_reset = null_crypto_pmd_stats_reset,
+
+ .dev_infos_get = null_crypto_pmd_info_get,
+
+ .queue_pair_setup = null_crypto_pmd_qp_setup,
+ .queue_pair_release = null_crypto_pmd_qp_release,
+ .queue_pair_start = null_crypto_pmd_qp_start,
+ .queue_pair_stop = null_crypto_pmd_qp_stop,
+ .queue_pair_count = null_crypto_pmd_qp_count,
+
+ .session_get_size = null_crypto_pmd_session_get_size,
+ .session_configure = null_crypto_pmd_session_configure,
+ .session_clear = null_crypto_pmd_session_clear
+};
+
+struct rte_cryptodev_ops *null_crypto_pmd_ops = &pmd_ops;
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