Imported Upstream version 16.11

Change-Id: I1944c65ddc88a9ad70f8c0eb6731552b84fbcb77
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

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;