--- /dev/null
+/*-
+ * 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 <rte_cryptodev.h>
+#include <rte_malloc.h>
+
+#include "rte_cryptodev_scheduler_operations.h"
+#include "scheduler_pmd_private.h"
+
+struct rr_scheduler_qp_ctx {
+ struct scheduler_slave slaves[RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES];
+ uint32_t nb_slaves;
+
+ uint32_t last_enq_slave_idx;
+ uint32_t last_deq_slave_idx;
+};
+
+static uint16_t
+schedule_enqueue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+ struct rr_scheduler_qp_ctx *rr_qp_ctx =
+ ((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
+ uint32_t slave_idx = rr_qp_ctx->last_enq_slave_idx;
+ struct scheduler_slave *slave = &rr_qp_ctx->slaves[slave_idx];
+ uint16_t i, processed_ops;
+ struct rte_cryptodev_sym_session *sessions[nb_ops];
+ struct scheduler_session *sess0, *sess1, *sess2, *sess3;
+
+ if (unlikely(nb_ops == 0))
+ return 0;
+
+ for (i = 0; i < nb_ops && i < 4; i++)
+ rte_prefetch0(ops[i]->sym->session);
+
+ for (i = 0; (i < (nb_ops - 8)) && (nb_ops > 8); i += 4) {
+ sess0 = (struct scheduler_session *)
+ ops[i]->sym->session->_private;
+ sess1 = (struct scheduler_session *)
+ ops[i+1]->sym->session->_private;
+ sess2 = (struct scheduler_session *)
+ ops[i+2]->sym->session->_private;
+ sess3 = (struct scheduler_session *)
+ ops[i+3]->sym->session->_private;
+
+ sessions[i] = ops[i]->sym->session;
+ sessions[i + 1] = ops[i + 1]->sym->session;
+ sessions[i + 2] = ops[i + 2]->sym->session;
+ sessions[i + 3] = ops[i + 3]->sym->session;
+
+ ops[i]->sym->session = sess0->sessions[slave_idx];
+ ops[i + 1]->sym->session = sess1->sessions[slave_idx];
+ ops[i + 2]->sym->session = sess2->sessions[slave_idx];
+ ops[i + 3]->sym->session = sess3->sessions[slave_idx];
+
+ rte_prefetch0(ops[i + 4]->sym->session);
+ rte_prefetch0(ops[i + 5]->sym->session);
+ rte_prefetch0(ops[i + 6]->sym->session);
+ rte_prefetch0(ops[i + 7]->sym->session);
+ }
+
+ for (; i < nb_ops; i++) {
+ sess0 = (struct scheduler_session *)
+ ops[i]->sym->session->_private;
+ sessions[i] = ops[i]->sym->session;
+ ops[i]->sym->session = sess0->sessions[slave_idx];
+ }
+
+ processed_ops = rte_cryptodev_enqueue_burst(slave->dev_id,
+ slave->qp_id, ops, nb_ops);
+
+ slave->nb_inflight_cops += processed_ops;
+
+ rr_qp_ctx->last_enq_slave_idx += 1;
+ rr_qp_ctx->last_enq_slave_idx %= rr_qp_ctx->nb_slaves;
+
+ /* recover session if enqueue is failed */
+ if (unlikely(processed_ops < nb_ops)) {
+ for (i = processed_ops; i < nb_ops; i++)
+ ops[i]->sym->session = sessions[i];
+ }
+
+ return processed_ops;
+}
+
+static uint16_t
+schedule_enqueue_ordering(void *qp, struct rte_crypto_op **ops,
+ uint16_t nb_ops)
+{
+ struct rte_ring *order_ring =
+ ((struct scheduler_qp_ctx *)qp)->order_ring;
+ uint16_t nb_ops_to_enq = get_max_enqueue_order_count(order_ring,
+ nb_ops);
+ uint16_t nb_ops_enqd = schedule_enqueue(qp, ops,
+ nb_ops_to_enq);
+
+ scheduler_order_insert(order_ring, ops, nb_ops_enqd);
+
+ return nb_ops_enqd;
+}
+
+
+static uint16_t
+schedule_dequeue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+ struct rr_scheduler_qp_ctx *rr_qp_ctx =
+ ((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
+ struct scheduler_slave *slave;
+ uint32_t last_slave_idx = rr_qp_ctx->last_deq_slave_idx;
+ uint16_t nb_deq_ops;
+
+ if (unlikely(rr_qp_ctx->slaves[last_slave_idx].nb_inflight_cops == 0)) {
+ do {
+ last_slave_idx += 1;
+
+ if (unlikely(last_slave_idx >= rr_qp_ctx->nb_slaves))
+ last_slave_idx = 0;
+ /* looped back, means no inflight cops in the queue */
+ if (last_slave_idx == rr_qp_ctx->last_deq_slave_idx)
+ return 0;
+ } while (rr_qp_ctx->slaves[last_slave_idx].nb_inflight_cops
+ == 0);
+ }
+
+ slave = &rr_qp_ctx->slaves[last_slave_idx];
+
+ nb_deq_ops = rte_cryptodev_dequeue_burst(slave->dev_id,
+ slave->qp_id, ops, nb_ops);
+
+ last_slave_idx += 1;
+ last_slave_idx %= rr_qp_ctx->nb_slaves;
+
+ rr_qp_ctx->last_deq_slave_idx = last_slave_idx;
+
+ slave->nb_inflight_cops -= nb_deq_ops;
+
+ return nb_deq_ops;
+}
+
+static uint16_t
+schedule_dequeue_ordering(void *qp, struct rte_crypto_op **ops,
+ uint16_t nb_ops)
+{
+ struct rte_ring *order_ring =
+ ((struct scheduler_qp_ctx *)qp)->order_ring;
+
+ schedule_dequeue(qp, ops, nb_ops);
+
+ return scheduler_order_drain(order_ring, ops, nb_ops);
+}
+
+static int
+slave_attach(__rte_unused struct rte_cryptodev *dev,
+ __rte_unused uint8_t slave_id)
+{
+ return 0;
+}
+
+static int
+slave_detach(__rte_unused struct rte_cryptodev *dev,
+ __rte_unused uint8_t slave_id)
+{
+ return 0;
+}
+
+static int
+scheduler_start(struct rte_cryptodev *dev)
+{
+ struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+ uint16_t i;
+
+ if (sched_ctx->reordering_enabled) {
+ dev->enqueue_burst = &schedule_enqueue_ordering;
+ dev->dequeue_burst = &schedule_dequeue_ordering;
+ } else {
+ dev->enqueue_burst = &schedule_enqueue;
+ dev->dequeue_burst = &schedule_dequeue;
+ }
+
+ for (i = 0; i < dev->data->nb_queue_pairs; i++) {
+ struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];
+ struct rr_scheduler_qp_ctx *rr_qp_ctx =
+ qp_ctx->private_qp_ctx;
+ uint32_t j;
+
+ memset(rr_qp_ctx->slaves, 0,
+ RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES *
+ sizeof(struct scheduler_slave));
+ for (j = 0; j < sched_ctx->nb_slaves; j++) {
+ rr_qp_ctx->slaves[j].dev_id =
+ sched_ctx->slaves[j].dev_id;
+ rr_qp_ctx->slaves[j].qp_id = i;
+ }
+
+ rr_qp_ctx->nb_slaves = sched_ctx->nb_slaves;
+
+ rr_qp_ctx->last_enq_slave_idx = 0;
+ rr_qp_ctx->last_deq_slave_idx = 0;
+ }
+
+ return 0;
+}
+
+static int
+scheduler_stop(__rte_unused struct rte_cryptodev *dev)
+{
+ return 0;
+}
+
+static int
+scheduler_config_qp(struct rte_cryptodev *dev, uint16_t qp_id)
+{
+ struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[qp_id];
+ struct rr_scheduler_qp_ctx *rr_qp_ctx;
+
+ rr_qp_ctx = rte_zmalloc_socket(NULL, sizeof(*rr_qp_ctx), 0,
+ rte_socket_id());
+ if (!rr_qp_ctx) {
+ CS_LOG_ERR("failed allocate memory for private queue pair");
+ return -ENOMEM;
+ }
+
+ qp_ctx->private_qp_ctx = (void *)rr_qp_ctx;
+
+ return 0;
+}
+
+static int
+scheduler_create_private_ctx(__rte_unused struct rte_cryptodev *dev)
+{
+ return 0;
+}
+
+struct rte_cryptodev_scheduler_ops scheduler_rr_ops = {
+ slave_attach,
+ slave_detach,
+ scheduler_start,
+ scheduler_stop,
+ scheduler_config_qp,
+ scheduler_create_private_ctx,
+ NULL, /* option_set */
+ NULL /* option_get */
+};
+
+struct rte_cryptodev_scheduler scheduler = {
+ .name = "roundrobin-scheduler",
+ .description = "scheduler which will round robin burst across "
+ "slave crypto devices",
+ .mode = CDEV_SCHED_MODE_ROUNDROBIN,
+ .ops = &scheduler_rr_ops
+};
+
+struct rte_cryptodev_scheduler *roundrobin_scheduler = &scheduler;
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