[dpdk-dev] [PATCH v7 07/11] crypto/scheduler: register operation function pointer table

[Fan Zhang]

Implements all standard operations required for cryptodev,
and register them to cryptodev operation function pointer table.

Signed-off-by: Fan Zhang <roy.fan.zhang at intel.com>
---
 drivers/crypto/scheduler/scheduler_pmd_ops.c | 490 +++++++++++++++++++++++++++
 1 file changed, 490 insertions(+)
 create mode 100644 drivers/crypto/scheduler/scheduler_pmd_ops.c

diff --git a/drivers/crypto/scheduler/scheduler_pmd_ops.c b/drivers/crypto/scheduler/scheduler_pmd_ops.c
new file mode 100644
index 0000000..56624c7
--- /dev/null
+++ b/drivers/crypto/scheduler/scheduler_pmd_ops.c
@@ -0,0 +1,490 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 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_config.h>
+#include <rte_common.h>
+#include <rte_malloc.h>
+#include <rte_dev.h>
+#include <rte_cryptodev.h>
+#include <rte_cryptodev_pmd.h>
+#include <rte_reorder.h>
+
+#include "scheduler_pmd_private.h"
+
+/** Configure device */
+static int
+scheduler_pmd_config(struct rte_cryptodev *dev)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t i;
+	int ret = 0;
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev *slave_dev =
+				rte_cryptodev_pmd_get_dev(slave_dev_id);
+
+		ret = (*slave_dev->dev_ops->dev_configure)(slave_dev);
+		if (ret < 0)
+			break;
+	}
+
+	return ret;
+}
+
+static int
+update_reorder_buff(struct rte_cryptodev *dev, uint16_t qp_id)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
+
+	if (sched_ctx->reordering_enabled) {
+		char reorder_buff_name[RTE_CRYPTODEV_NAME_MAX_LEN];
+		uint32_t buff_size = sched_ctx->nb_slaves * PER_SLAVE_BUFF_SIZE;
+
+		if (qp_ctx->reorder_buf) {
+			rte_reorder_free(qp_ctx->reorder_buf);
+			qp_ctx->reorder_buf = NULL;
+		}
+
+		if (!buff_size)
+			return 0;
+
+		if (snprintf(reorder_buff_name, RTE_CRYPTODEV_NAME_MAX_LEN,
+			"%s_rb_%u_%u", RTE_STR(CRYPTODEV_NAME_SCHEDULER_PMD),
+			dev->data->dev_id, qp_id) < 0) {
+			CS_LOG_ERR("failed to create unique reorder buffer "
+					"name");
+			return -ENOMEM;
+		}
+
+		qp_ctx->reorder_buf = rte_reorder_create(reorder_buff_name,
+				rte_socket_id(), buff_size);
+		if (!qp_ctx->reorder_buf) {
+			CS_LOG_ERR("failed to create reorder buffer");
+			return -ENOMEM;
+		}
+	} else {
+		if (qp_ctx->reorder_buf) {
+			rte_reorder_free(qp_ctx->reorder_buf);
+			qp_ctx->reorder_buf = NULL;
+		}
+	}
+
+	return 0;
+}
+
+/** Start device */
+static int
+scheduler_pmd_start(struct rte_cryptodev *dev)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t i;
+	int ret;
+
+	if (dev->data->dev_started)
+		return 0;
+
+	for (i = 0; i < dev->data->nb_queue_pairs; i++) {
+		ret = update_reorder_buff(dev, i);
+		if (ret < 0) {
+			CS_LOG_ERR("Failed to update reorder buffer");
+			return ret;
+		}
+	}
+
+	if (sched_ctx->mode == CDEV_SCHED_MODE_NOT_SET) {
+		CS_LOG_ERR("Scheduler mode is not set");
+		return -1;
+	}
+
+	if (!sched_ctx->nb_slaves) {
+		CS_LOG_ERR("No slave in the scheduler");
+		return -1;
+	}
+
+	RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.slave_attach, -ENOTSUP);
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+
+		if ((*sched_ctx->ops.slave_attach)(dev, slave_dev_id) < 0) {
+			CS_LOG_ERR("Failed to attach slave");
+			return -ENOTSUP;
+		}
+	}
+
+	RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.scheduler_start, -ENOTSUP);
+
+	if ((*sched_ctx->ops.scheduler_start)(dev) < 0) {
+		CS_LOG_ERR("Scheduler start failed");
+		return -1;
+	}
+
+	/* start all slaves */
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev *slave_dev =
+				rte_cryptodev_pmd_get_dev(slave_dev_id);
+
+		ret = (*slave_dev->dev_ops->dev_start)(slave_dev);
+		if (ret < 0) {
+			CS_LOG_ERR("Failed to start slave dev %u",
+					slave_dev_id);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+/** Stop device */
+static void
+scheduler_pmd_stop(struct rte_cryptodev *dev)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t i;
+
+	if (!dev->data->dev_started)
+		return;
+
+	/* stop all slaves first */
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev *slave_dev =
+				rte_cryptodev_pmd_get_dev(slave_dev_id);
+
+		(*slave_dev->dev_ops->dev_stop)(slave_dev);
+	}
+
+	if (*sched_ctx->ops.scheduler_stop)
+		(*sched_ctx->ops.scheduler_stop)(dev);
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+
+		if (*sched_ctx->ops.slave_detach)
+			(*sched_ctx->ops.slave_detach)(dev, slave_dev_id);
+	}
+}
+
+/** Close device */
+static int
+scheduler_pmd_close(struct rte_cryptodev *dev)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t i;
+	int ret;
+
+	/* the dev should be stopped before being closed */
+	if (dev->data->dev_started)
+		return -EBUSY;
+
+	/* close all slaves first */
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev *slave_dev =
+				rte_cryptodev_pmd_get_dev(slave_dev_id);
+
+		ret = (*slave_dev->dev_ops->dev_close)(slave_dev);
+		if (ret < 0)
+			return ret;
+	}
+
+	for (i = 0; i < dev->data->nb_queue_pairs; i++) {
+		struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];
+
+		if (qp_ctx->reorder_buf) {
+			rte_reorder_free(qp_ctx->reorder_buf);
+			qp_ctx->reorder_buf = NULL;
+		}
+
+		if (qp_ctx->private_qp_ctx) {
+			rte_free(qp_ctx->private_qp_ctx);
+			qp_ctx->private_qp_ctx = NULL;
+		}
+	}
+
+	if (sched_ctx->private_ctx)
+		rte_free(sched_ctx->private_ctx);
+
+	if (sched_ctx->capabilities)
+		rte_free(sched_ctx->capabilities);
+
+	return 0;
+}
+
+/** Get device statistics */
+static void
+scheduler_pmd_stats_get(struct rte_cryptodev *dev,
+	struct rte_cryptodev_stats *stats)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t i;
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev *slave_dev =
+				rte_cryptodev_pmd_get_dev(slave_dev_id);
+		struct rte_cryptodev_stats slave_stats = {0};
+
+		(*slave_dev->dev_ops->stats_get)(slave_dev, &slave_stats);
+
+		stats->enqueued_count += slave_stats.enqueued_count;
+		stats->dequeued_count += slave_stats.dequeued_count;
+
+		stats->enqueue_err_count += slave_stats.enqueue_err_count;
+		stats->dequeue_err_count += slave_stats.dequeue_err_count;
+	}
+}
+
+/** Reset device statistics */
+static void
+scheduler_pmd_stats_reset(struct rte_cryptodev *dev)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t i;
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev *slave_dev =
+				rte_cryptodev_pmd_get_dev(slave_dev_id);
+
+		(*slave_dev->dev_ops->stats_reset)(slave_dev);
+	}
+}
+
+/** Get device info */
+static void
+scheduler_pmd_info_get(struct rte_cryptodev *dev,
+		struct rte_cryptodev_info *dev_info)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	uint32_t max_nb_sessions = sched_ctx->nb_slaves ?
+			UINT32_MAX : RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS;
+	uint32_t i;
+
+	if (!dev_info)
+		return;
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		uint8_t slave_dev_id = sched_ctx->slaves[i].dev_id;
+		struct rte_cryptodev_info slave_info;
+
+		rte_cryptodev_info_get(slave_dev_id, &slave_info);
+		max_nb_sessions = slave_info.sym.max_nb_sessions <
+				max_nb_sessions ?
+				slave_info.sym.max_nb_sessions :
+				max_nb_sessions;
+	}
+
+	dev_info->dev_type = dev->dev_type;
+	dev_info->feature_flags = dev->feature_flags;
+	dev_info->capabilities = sched_ctx->capabilities;
+	dev_info->max_nb_queue_pairs = sched_ctx->max_nb_queue_pairs;
+	dev_info->sym.max_nb_sessions = max_nb_sessions;
+}
+
+/** Release queue pair */
+static int
+scheduler_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
+{
+	struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
+
+	if (!qp_ctx)
+		return 0;
+
+	if (qp_ctx->reorder_buf)
+		rte_reorder_free(qp_ctx->reorder_buf);
+	if (qp_ctx->private_qp_ctx)
+		rte_free(qp_ctx->private_qp_ctx);
+
+	rte_free(qp_ctx);
+	dev->data->queue_pairs[qp_id] = NULL;
+
+	return 0;
+}
+
+/** Setup a queue pair */
+static int
+scheduler_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
+	__rte_unused const struct rte_cryptodev_qp_conf *qp_conf, int socket_id)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+	struct scheduler_qp_ctx *qp_ctx;
+	char name[RTE_CRYPTODEV_NAME_MAX_LEN];
+
+	if (snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN,
+			"CRYTO_SCHE PMD %u QP %u",
+			dev->data->dev_id, qp_id) < 0) {
+		CS_LOG_ERR("Failed to create unique queue pair name");
+		return -EFAULT;
+	}
+
+	/* Free memory prior to re-allocation if needed. */
+	if (dev->data->queue_pairs[qp_id] != NULL)
+		scheduler_pmd_qp_release(dev, qp_id);
+
+	/* Allocate the queue pair data structure. */
+	qp_ctx = rte_zmalloc_socket(name, sizeof(*qp_ctx), RTE_CACHE_LINE_SIZE,
+			socket_id);
+	if (qp_ctx == NULL)
+		return -ENOMEM;
+
+	dev->data->queue_pairs[qp_id] = qp_ctx;
+
+	if (*sched_ctx->ops.config_queue_pair) {
+		if ((*sched_ctx->ops.config_queue_pair)(dev, qp_id) < 0) {
+			CS_LOG_ERR("Unable to configure queue pair");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+/** Start queue pair */
+static int
+scheduler_pmd_qp_start(__rte_unused struct rte_cryptodev *dev,
+		__rte_unused uint16_t queue_pair_id)
+{
+	return -ENOTSUP;
+}
+
+/** Stop queue pair */
+static int
+scheduler_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
+scheduler_pmd_qp_count(struct rte_cryptodev *dev)
+{
+	return dev->data->nb_queue_pairs;
+}
+
+static uint32_t
+scheduler_pmd_session_get_size(struct rte_cryptodev *dev __rte_unused)
+{
+	return sizeof(struct scheduler_session);
+}
+
+static int
+config_slave_sess(struct scheduler_ctx *sched_ctx,
+		struct rte_crypto_sym_xform *xform,
+		struct scheduler_session *sess,
+		uint32_t create)
+{
+	uint32_t i;
+
+	for (i = 0; i < sched_ctx->nb_slaves; i++) {
+		struct scheduler_slave *slave = &sched_ctx->slaves[i];
+		struct rte_cryptodev *dev =
+				rte_cryptodev_pmd_get_dev(slave->dev_id);
+
+		if (sess->sessions[i]) {
+			if (create)
+				continue;
+			/* !create */
+			(*dev->dev_ops->session_clear)(dev,
+					(void *)sess->sessions[i]);
+			sess->sessions[i] = NULL;
+		} else {
+			if (!create)
+				continue;
+			/* create */
+			sess->sessions[i] =
+					rte_cryptodev_sym_session_create(
+							slave->dev_id, xform);
+			if (!sess->sessions[i]) {
+				config_slave_sess(sched_ctx, NULL, sess, 0);
+				return -1;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/** Clear the memory of session so it doesn't leave key material behind */
+static void
+scheduler_pmd_session_clear(struct rte_cryptodev *dev,
+	void *sess)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+
+	config_slave_sess(sched_ctx, NULL, sess, 0);
+
+	memset(sess, 0, sizeof(struct scheduler_session));
+}
+
+static void *
+scheduler_pmd_session_configure(struct rte_cryptodev *dev,
+	struct rte_crypto_sym_xform *xform, void *sess)
+{
+	struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+
+	if (config_slave_sess(sched_ctx, xform, sess, 1) < 0) {
+		CS_LOG_ERR("unabled to config sym session");
+		return NULL;
+	}
+
+	return sess;
+}
+
+struct rte_cryptodev_ops scheduler_pmd_ops = {
+		.dev_configure		= scheduler_pmd_config,
+		.dev_start		= scheduler_pmd_start,
+		.dev_stop		= scheduler_pmd_stop,
+		.dev_close		= scheduler_pmd_close,
+
+		.stats_get		= scheduler_pmd_stats_get,
+		.stats_reset		= scheduler_pmd_stats_reset,
+
+		.dev_infos_get		= scheduler_pmd_info_get,
+
+		.queue_pair_setup	= scheduler_pmd_qp_setup,
+		.queue_pair_release	= scheduler_pmd_qp_release,
+		.queue_pair_start	= scheduler_pmd_qp_start,
+		.queue_pair_stop	= scheduler_pmd_qp_stop,
+		.queue_pair_count	= scheduler_pmd_qp_count,
+
+		.session_get_size	= scheduler_pmd_session_get_size,
+		.session_configure	= scheduler_pmd_session_configure,
+		.session_clear		= scheduler_pmd_session_clear,
+};
+
+struct rte_cryptodev_ops *rte_crypto_scheduler_pmd_ops = &scheduler_pmd_ops;
-- 
2.7.4