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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Intel Corporation
*/
#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;
if (unlikely(nb_ops == 0))
return 0;
for (i = 0; i < nb_ops && i < 4; i++)
rte_prefetch0(ops[i]->sym->session);
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;
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) {
CR_SCHED_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;
}
static 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 */
};
static 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 *crypto_scheduler_roundrobin = &scheduler;
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