--- /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"
+
+#define DEF_PKT_SIZE_THRESHOLD (0xffffff80)
+#define SLAVE_IDX_SWITCH_MASK (0x01)
+#define PRIMARY_SLAVE_IDX 0
+#define SECONDARY_SLAVE_IDX 1
+#define NB_PKT_SIZE_SLAVES 2
+
+/** pkt size based scheduler context */
+struct psd_scheduler_ctx {
+ uint32_t threshold;
+};
+
+/** pkt size based scheduler queue pair context */
+struct psd_scheduler_qp_ctx {
+ struct scheduler_slave primary_slave;
+ struct scheduler_slave secondary_slave;
+ uint32_t threshold;
+ uint8_t deq_idx;
+} __rte_cache_aligned;
+
+/** scheduling operation variables' wrapping */
+struct psd_schedule_op {
+ uint8_t slave_idx;
+ uint16_t pos;
+};
+
+static uint16_t
+schedule_enqueue(void *qp, struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+ struct scheduler_qp_ctx *qp_ctx = qp;
+ struct psd_scheduler_qp_ctx *psd_qp_ctx = qp_ctx->private_qp_ctx;
+ struct rte_crypto_op *sched_ops[NB_PKT_SIZE_SLAVES][nb_ops];
+ struct scheduler_session *sess;
+ uint32_t in_flight_ops[NB_PKT_SIZE_SLAVES] = {
+ psd_qp_ctx->primary_slave.nb_inflight_cops,
+ psd_qp_ctx->secondary_slave.nb_inflight_cops
+ };
+ struct psd_schedule_op enq_ops[NB_PKT_SIZE_SLAVES] = {
+ {PRIMARY_SLAVE_IDX, 0}, {SECONDARY_SLAVE_IDX, 0}
+ };
+ struct psd_schedule_op *p_enq_op;
+ uint16_t i, processed_ops_pri = 0, processed_ops_sec = 0;
+ uint32_t job_len;
+
+ if (unlikely(nb_ops == 0))
+ return 0;
+
+ for (i = 0; i < nb_ops && i < 4; i++) {
+ rte_prefetch0(ops[i]->sym);
+ rte_prefetch0(ops[i]->sym->session);
+ }
+
+ for (i = 0; (i < (nb_ops - 8)) && (nb_ops > 8); i += 4) {
+ rte_prefetch0(ops[i + 4]->sym);
+ rte_prefetch0(ops[i + 4]->sym->session);
+ rte_prefetch0(ops[i + 5]->sym);
+ rte_prefetch0(ops[i + 5]->sym->session);
+ rte_prefetch0(ops[i + 6]->sym);
+ rte_prefetch0(ops[i + 6]->sym->session);
+ rte_prefetch0(ops[i + 7]->sym);
+ rte_prefetch0(ops[i + 7]->sym->session);
+
+ sess = (struct scheduler_session *)
+ ops[i]->sym->session->_private;
+ /* job_len is initialized as cipher data length, once
+ * it is 0, equals to auth data length
+ */
+ job_len = ops[i]->sym->cipher.data.length;
+ job_len += (ops[i]->sym->cipher.data.length == 0) *
+ ops[i]->sym->auth.data.length;
+ /* decide the target op based on the job length */
+ p_enq_op = &enq_ops[!(job_len & psd_qp_ctx->threshold)];
+
+ /* stop schedule cops before the queue is full, this shall
+ * prevent the failed enqueue
+ */
+ if (p_enq_op->pos + in_flight_ops[p_enq_op->slave_idx] ==
+ qp_ctx->max_nb_objs) {
+ i = nb_ops;
+ break;
+ }
+
+ sched_ops[p_enq_op->slave_idx][p_enq_op->pos] = ops[i];
+ ops[i]->sym->session = sess->sessions[p_enq_op->slave_idx];
+ p_enq_op->pos++;
+
+ sess = (struct scheduler_session *)
+ ops[i+1]->sym->session->_private;
+ job_len = ops[i+1]->sym->cipher.data.length;
+ job_len += (ops[i+1]->sym->cipher.data.length == 0) *
+ ops[i+1]->sym->auth.data.length;
+ p_enq_op = &enq_ops[!(job_len & psd_qp_ctx->threshold)];
+
+ if (p_enq_op->pos + in_flight_ops[p_enq_op->slave_idx] ==
+ qp_ctx->max_nb_objs) {
+ i = nb_ops;
+ break;
+ }
+
+ sched_ops[p_enq_op->slave_idx][p_enq_op->pos] = ops[i+1];
+ ops[i+1]->sym->session = sess->sessions[p_enq_op->slave_idx];
+ p_enq_op->pos++;
+
+ sess = (struct scheduler_session *)
+ ops[i+2]->sym->session->_private;
+ job_len = ops[i+2]->sym->cipher.data.length;
+ job_len += (ops[i+2]->sym->cipher.data.length == 0) *
+ ops[i+2]->sym->auth.data.length;
+ p_enq_op = &enq_ops[!(job_len & psd_qp_ctx->threshold)];
+
+ if (p_enq_op->pos + in_flight_ops[p_enq_op->slave_idx] ==
+ qp_ctx->max_nb_objs) {
+ i = nb_ops;
+ break;
+ }
+
+ sched_ops[p_enq_op->slave_idx][p_enq_op->pos] = ops[i+2];
+ ops[i+2]->sym->session = sess->sessions[p_enq_op->slave_idx];
+ p_enq_op->pos++;
+
+ sess = (struct scheduler_session *)
+ ops[i+3]->sym->session->_private;
+
+ job_len = ops[i+3]->sym->cipher.data.length;
+ job_len += (ops[i+3]->sym->cipher.data.length == 0) *
+ ops[i+3]->sym->auth.data.length;
+ p_enq_op = &enq_ops[!(job_len & psd_qp_ctx->threshold)];
+
+ if (p_enq_op->pos + in_flight_ops[p_enq_op->slave_idx] ==
+ qp_ctx->max_nb_objs) {
+ i = nb_ops;
+ break;
+ }
+
+ sched_ops[p_enq_op->slave_idx][p_enq_op->pos] = ops[i+3];
+ ops[i+3]->sym->session = sess->sessions[p_enq_op->slave_idx];
+ p_enq_op->pos++;
+ }
+
+ for (; i < nb_ops; i++) {
+ sess = (struct scheduler_session *)
+ ops[i]->sym->session->_private;
+
+ job_len = ops[i]->sym->cipher.data.length;
+ job_len += (ops[i]->sym->cipher.data.length == 0) *
+ ops[i]->sym->auth.data.length;
+ p_enq_op = &enq_ops[!(job_len & psd_qp_ctx->threshold)];
+
+ if (p_enq_op->pos + in_flight_ops[p_enq_op->slave_idx] ==
+ qp_ctx->max_nb_objs) {
+ i = nb_ops;
+ break;
+ }
+
+ sched_ops[p_enq_op->slave_idx][p_enq_op->pos] = ops[i];
+ ops[i]->sym->session = sess->sessions[p_enq_op->slave_idx];
+ p_enq_op->pos++;
+ }
+
+ processed_ops_pri = rte_cryptodev_enqueue_burst(
+ psd_qp_ctx->primary_slave.dev_id,
+ psd_qp_ctx->primary_slave.qp_id,
+ sched_ops[PRIMARY_SLAVE_IDX],
+ enq_ops[PRIMARY_SLAVE_IDX].pos);
+ /* enqueue shall not fail as the slave queue is monitored */
+ RTE_ASSERT(processed_ops_pri == enq_ops[PRIMARY_SLAVE_IDX].pos);
+
+ psd_qp_ctx->primary_slave.nb_inflight_cops += processed_ops_pri;
+
+ processed_ops_sec = rte_cryptodev_enqueue_burst(
+ psd_qp_ctx->secondary_slave.dev_id,
+ psd_qp_ctx->secondary_slave.qp_id,
+ sched_ops[SECONDARY_SLAVE_IDX],
+ enq_ops[SECONDARY_SLAVE_IDX].pos);
+ RTE_ASSERT(processed_ops_sec == enq_ops[SECONDARY_SLAVE_IDX].pos);
+
+ psd_qp_ctx->secondary_slave.nb_inflight_cops += processed_ops_sec;
+
+ return processed_ops_pri + processed_ops_sec;
+}
+
+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 psd_scheduler_qp_ctx *qp_ctx =
+ ((struct scheduler_qp_ctx *)qp)->private_qp_ctx;
+ struct scheduler_slave *slaves[NB_PKT_SIZE_SLAVES] = {
+ &qp_ctx->primary_slave, &qp_ctx->secondary_slave};
+ struct scheduler_slave *slave = slaves[qp_ctx->deq_idx];
+ uint16_t nb_deq_ops_pri = 0, nb_deq_ops_sec = 0;
+
+ if (slave->nb_inflight_cops) {
+ nb_deq_ops_pri = rte_cryptodev_dequeue_burst(slave->dev_id,
+ slave->qp_id, ops, nb_ops);
+ slave->nb_inflight_cops -= nb_deq_ops_pri;
+ }
+
+ qp_ctx->deq_idx = (~qp_ctx->deq_idx) & SLAVE_IDX_SWITCH_MASK;
+
+ if (nb_deq_ops_pri == nb_ops)
+ return nb_deq_ops_pri;
+
+ slave = slaves[qp_ctx->deq_idx];
+
+ if (slave->nb_inflight_cops) {
+ nb_deq_ops_sec = rte_cryptodev_dequeue_burst(slave->dev_id,
+ slave->qp_id, &ops[nb_deq_ops_pri],
+ nb_ops - nb_deq_ops_pri);
+ slave->nb_inflight_cops -= nb_deq_ops_sec;
+
+ if (!slave->nb_inflight_cops)
+ qp_ctx->deq_idx = (~qp_ctx->deq_idx) &
+ SLAVE_IDX_SWITCH_MASK;
+ }
+
+ return nb_deq_ops_pri + nb_deq_ops_sec;
+}
+
+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;
+ struct psd_scheduler_ctx *psd_ctx = sched_ctx->private_ctx;
+ uint16_t i;
+
+ /* for packet size based scheduler, nb_slaves have to >= 2 */
+ if (sched_ctx->nb_slaves < NB_PKT_SIZE_SLAVES) {
+ CS_LOG_ERR("not enough slaves to start");
+ return -1;
+ }
+
+ for (i = 0; i < dev->data->nb_queue_pairs; i++) {
+ struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];
+ struct psd_scheduler_qp_ctx *ps_qp_ctx =
+ qp_ctx->private_qp_ctx;
+
+ ps_qp_ctx->primary_slave.dev_id =
+ sched_ctx->slaves[PRIMARY_SLAVE_IDX].dev_id;
+ ps_qp_ctx->primary_slave.qp_id = i;
+ ps_qp_ctx->primary_slave.nb_inflight_cops = 0;
+
+ ps_qp_ctx->secondary_slave.dev_id =
+ sched_ctx->slaves[SECONDARY_SLAVE_IDX].dev_id;
+ ps_qp_ctx->secondary_slave.qp_id = i;
+ ps_qp_ctx->secondary_slave.nb_inflight_cops = 0;
+
+ ps_qp_ctx->threshold = psd_ctx->threshold;
+ }
+
+ 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;
+ }
+
+ return 0;
+}
+
+static int
+scheduler_stop(struct rte_cryptodev *dev)
+{
+ uint16_t i;
+
+ for (i = 0; i < dev->data->nb_queue_pairs; i++) {
+ struct scheduler_qp_ctx *qp_ctx = dev->data->queue_pairs[i];
+ struct psd_scheduler_qp_ctx *ps_qp_ctx = qp_ctx->private_qp_ctx;
+
+ if (ps_qp_ctx->primary_slave.nb_inflight_cops +
+ ps_qp_ctx->secondary_slave.nb_inflight_cops) {
+ CS_LOG_ERR("Some crypto ops left in slave queue");
+ return -1;
+ }
+ }
+
+ 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 psd_scheduler_qp_ctx *ps_qp_ctx;
+
+ ps_qp_ctx = rte_zmalloc_socket(NULL, sizeof(*ps_qp_ctx), 0,
+ rte_socket_id());
+ if (!ps_qp_ctx) {
+ CS_LOG_ERR("failed allocate memory for private queue pair");
+ return -ENOMEM;
+ }
+
+ qp_ctx->private_qp_ctx = (void *)ps_qp_ctx;
+
+ return 0;
+}
+
+static int
+scheduler_create_private_ctx(struct rte_cryptodev *dev)
+{
+ struct scheduler_ctx *sched_ctx = dev->data->dev_private;
+ struct psd_scheduler_ctx *psd_ctx;
+
+ if (sched_ctx->private_ctx)
+ rte_free(sched_ctx->private_ctx);
+
+ psd_ctx = rte_zmalloc_socket(NULL, sizeof(struct psd_scheduler_ctx), 0,
+ rte_socket_id());
+ if (!psd_ctx) {
+ CS_LOG_ERR("failed allocate memory");
+ return -ENOMEM;
+ }
+
+ psd_ctx->threshold = DEF_PKT_SIZE_THRESHOLD;
+
+ sched_ctx->private_ctx = (void *)psd_ctx;
+
+ return 0;
+}
+static int
+scheduler_option_set(struct rte_cryptodev *dev, uint32_t option_type,
+ void *option)
+{
+ struct psd_scheduler_ctx *psd_ctx = ((struct scheduler_ctx *)
+ dev->data->dev_private)->private_ctx;
+ uint32_t threshold;
+
+ if ((enum rte_cryptodev_schedule_option_type)option_type !=
+ CDEV_SCHED_OPTION_THRESHOLD) {
+ CS_LOG_ERR("Option not supported");
+ return -EINVAL;
+ }
+
+ threshold = ((struct rte_cryptodev_scheduler_threshold_option *)
+ option)->threshold;
+ if (!rte_is_power_of_2(threshold)) {
+ CS_LOG_ERR("Threshold is not power of 2");
+ return -EINVAL;
+ }
+
+ psd_ctx->threshold = ~(threshold - 1);
+
+ return 0;
+}
+
+static int
+scheduler_option_get(struct rte_cryptodev *dev, uint32_t option_type,
+ void *option)
+{
+ struct psd_scheduler_ctx *psd_ctx = ((struct scheduler_ctx *)
+ dev->data->dev_private)->private_ctx;
+ struct rte_cryptodev_scheduler_threshold_option *threshold_option;
+
+ if ((enum rte_cryptodev_schedule_option_type)option_type !=
+ CDEV_SCHED_OPTION_THRESHOLD) {
+ CS_LOG_ERR("Option not supported");
+ return -EINVAL;
+ }
+
+ threshold_option = option;
+ threshold_option->threshold = (~psd_ctx->threshold) + 1;
+
+ return 0;
+}
+
+struct rte_cryptodev_scheduler_ops scheduler_ps_ops = {
+ slave_attach,
+ slave_detach,
+ scheduler_start,
+ scheduler_stop,
+ scheduler_config_qp,
+ scheduler_create_private_ctx,
+ scheduler_option_set,
+ scheduler_option_get
+};
+
+struct rte_cryptodev_scheduler psd_scheduler = {
+ .name = "packet-size-based-scheduler",
+ .description = "scheduler which will distribute crypto op "
+ "burst based on the packet size",
+ .mode = CDEV_SCHED_MODE_PKT_SIZE_DISTR,
+ .ops = &scheduler_ps_ops
+};
+
+struct rte_cryptodev_scheduler *pkt_size_based_distr_scheduler = &psd_scheduler;
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