From: Fan Zhang <roy.fan.zhang@intel.com>
To: dev@dpdk.org
Cc: declan.doherty@intel.com, pablo.de.lara.guarch@intel.com
Subject: [dpdk-dev] [PATCH v6 07/11] crypto/scheduler: register operation function pointer table
Date: Tue, 24 Jan 2017 16:06:19 +0000 [thread overview]
Message-ID: <1485273983-172764-8-git-send-email-roy.fan.zhang@intel.com> (raw)
In-Reply-To: <1485273983-172764-1-git-send-email-roy.fan.zhang@intel.com>
Implements all standard operations required for cryptodev,
and register them to cryptodev operation function pointer table.
Signed-off-by: Fan Zhang <roy.fan.zhang@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
next prev parent reply other threads:[~2017-01-24 16:06 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-02 14:15 [dpdk-dev] [PATCH] Scheduler: add driver for scheduler crypto pmd Fan Zhang
2016-12-02 14:31 ` Thomas Monjalon
2016-12-02 14:57 ` Bruce Richardson
2016-12-02 16:22 ` Declan Doherty
2016-12-05 15:12 ` Neil Horman
2016-12-07 12:42 ` Declan Doherty
2016-12-07 14:16 ` Neil Horman
2016-12-07 14:46 ` Richardson, Bruce
2016-12-07 16:04 ` Declan Doherty
2016-12-08 14:57 ` Neil Horman
2017-01-03 17:08 ` [dpdk-dev] [PATCH v2] " Fan Zhang
2017-01-03 17:16 ` [dpdk-dev] [PATCH v3] " Fan Zhang
2017-01-17 10:57 ` [dpdk-dev] [PATCH v4] " Fan Zhang
2017-01-17 13:19 ` [dpdk-dev] [PATCH v5] crypto/scheduler: " Fan Zhang
2017-01-17 14:09 ` Declan Doherty
2017-01-17 20:21 ` Thomas Monjalon
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 00/11] " Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 01/11] cryptodev: add scheduler PMD name and type Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 02/11] crypto/scheduler: add APIs for scheduler Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 03/11] crypto/scheduler: add internal structure declarations Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 04/11] crypto/scheduler: add scheduler API implementations Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 05/11] crypto/scheduler: add round-robin scheduling mode Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 06/11] crypto/scheduler: register scheduler vdev driver Fan Zhang
2017-01-24 16:06 ` Fan Zhang [this message]
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 08/11] crypto/scheduler: add scheduler PMD to DPDK compile system Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 09/11] crypto/scheduler: add scheduler PMD config options Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 10/11] app/test: add unit test for cryptodev scheduler PMD Fan Zhang
2017-01-24 16:06 ` [dpdk-dev] [PATCH v6 11/11] crypto/scheduler: add documentation Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 00/11] crypto/scheduler: add driver for scheduler crypto pmd Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 01/11] cryptodev: add scheduler PMD name and type Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 02/11] crypto/scheduler: add APIs for scheduler Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 03/11] crypto/scheduler: add internal structure declarations Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 04/11] crypto/scheduler: add scheduler API implementations Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 05/11] crypto/scheduler: add round-robin scheduling mode Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 06/11] crypto/scheduler: register scheduler vdev driver Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 07/11] crypto/scheduler: register operation function pointer table Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 08/11] crypto/scheduler: add scheduler PMD to DPDK compile system Fan Zhang
2017-01-24 16:23 ` [dpdk-dev] [PATCH v7 09/11] crypto/scheduler: add scheduler PMD config options Fan Zhang
2017-01-24 16:24 ` [dpdk-dev] [PATCH v7 10/11] app/test: add unit test for cryptodev scheduler PMD Fan Zhang
2017-01-24 16:24 ` [dpdk-dev] [PATCH v7 11/11] crypto/scheduler: add documentation Fan Zhang
2017-01-24 16:29 ` [dpdk-dev] [PATCH v7 00/11] crypto/scheduler: add driver for scheduler crypto pmd De Lara Guarch, Pablo
2017-01-25 14:03 ` De Lara Guarch, Pablo
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