--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Cavium Networks
+ */
+
+#include <string.h>
+
+#include <rte_common.h>
+#include <rte_malloc.h>
+
+#include "zlib_pmd_private.h"
+
+static const struct rte_compressdev_capabilities zlib_pmd_capabilities[] = {
+ { /* Deflate */
+ .algo = RTE_COMP_ALGO_DEFLATE,
+ .comp_feature_flags = (RTE_COMP_FF_NONCOMPRESSED_BLOCKS |
+ RTE_COMP_FF_HUFFMAN_FIXED |
+ RTE_COMP_FF_HUFFMAN_DYNAMIC),
+ .window_size = {
+ .min = 8,
+ .max = 15,
+ .increment = 1
+ },
+ },
+
+ RTE_COMP_END_OF_CAPABILITIES_LIST()
+
+};
+
+/** Configure device */
+static int
+zlib_pmd_config(struct rte_compressdev *dev,
+ struct rte_compressdev_config *config)
+{
+ struct rte_mempool *mp;
+ char mp_name[RTE_MEMPOOL_NAMESIZE];
+ struct zlib_private *internals = dev->data->dev_private;
+
+ snprintf(mp_name, RTE_MEMPOOL_NAMESIZE,
+ "stream_mp_%u", dev->data->dev_id);
+ mp = internals->mp;
+ if (mp == NULL) {
+ mp = rte_mempool_create(mp_name,
+ config->max_nb_priv_xforms +
+ config->max_nb_streams,
+ sizeof(struct zlib_priv_xform),
+ 0, 0, NULL, NULL, NULL,
+ NULL, config->socket_id,
+ 0);
+ if (mp == NULL) {
+ ZLIB_PMD_ERR("Cannot create private xform pool on "
+ "socket %d\n", config->socket_id);
+ return -ENOMEM;
+ }
+ internals->mp = mp;
+ }
+ return 0;
+}
+
+/** Start device */
+static int
+zlib_pmd_start(__rte_unused struct rte_compressdev *dev)
+{
+ return 0;
+}
+
+/** Stop device */
+static void
+zlib_pmd_stop(__rte_unused struct rte_compressdev *dev)
+{
+}
+
+/** Close device */
+static int
+zlib_pmd_close(struct rte_compressdev *dev)
+{
+ struct zlib_private *internals = dev->data->dev_private;
+ rte_mempool_free(internals->mp);
+ internals->mp = NULL;
+ return 0;
+}
+
+/** Get device statistics */
+static void
+zlib_pmd_stats_get(struct rte_compressdev *dev,
+ struct rte_compressdev_stats *stats)
+{
+ int qp_id;
+
+ for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
+ struct zlib_qp *qp = dev->data->queue_pairs[qp_id];
+
+ stats->enqueued_count += qp->qp_stats.enqueued_count;
+ stats->dequeued_count += qp->qp_stats.dequeued_count;
+
+ stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
+ stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
+ }
+}
+
+/** Reset device statistics */
+static void
+zlib_pmd_stats_reset(struct rte_compressdev *dev)
+{
+ int qp_id;
+
+ for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
+ struct zlib_qp *qp = dev->data->queue_pairs[qp_id];
+
+ memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
+ }
+}
+
+/** Get device info */
+static void
+zlib_pmd_info_get(struct rte_compressdev *dev,
+ struct rte_compressdev_info *dev_info)
+{
+ if (dev_info != NULL) {
+ dev_info->driver_name = dev->device->name;
+ dev_info->feature_flags = dev->feature_flags;
+ dev_info->capabilities = zlib_pmd_capabilities;
+ }
+}
+
+/** Release queue pair */
+static int
+zlib_pmd_qp_release(struct rte_compressdev *dev, uint16_t qp_id)
+{
+ struct zlib_qp *qp = dev->data->queue_pairs[qp_id];
+
+ if (qp != NULL) {
+ rte_ring_free(qp->processed_pkts);
+ rte_free(qp);
+ dev->data->queue_pairs[qp_id] = NULL;
+ }
+ return 0;
+}
+
+/** set a unique name for the queue pair based on its name, dev_id and qp_id */
+static int
+zlib_pmd_qp_set_unique_name(struct rte_compressdev *dev,
+ struct zlib_qp *qp)
+{
+ unsigned int n = snprintf(qp->name, sizeof(qp->name),
+ "zlib_pmd_%u_qp_%u",
+ dev->data->dev_id, qp->id);
+
+ if (n >= sizeof(qp->name))
+ return -1;
+
+ return 0;
+}
+
+/** Create a ring to place process packets on */
+static struct rte_ring *
+zlib_pmd_qp_create_processed_pkts_ring(struct zlib_qp *qp,
+ unsigned int ring_size, int socket_id)
+{
+ struct rte_ring *r = qp->processed_pkts;
+
+ if (r) {
+ if (rte_ring_get_size(r) >= ring_size) {
+ ZLIB_PMD_INFO("Reusing existing ring %s for processed"
+ " packets", qp->name);
+ return r;
+ }
+
+ ZLIB_PMD_ERR("Unable to reuse existing ring %s for processed"
+ " packets", qp->name);
+ return NULL;
+ }
+
+ return rte_ring_create(qp->name, ring_size, socket_id,
+ RING_F_EXACT_SZ);
+}
+
+/** Setup a queue pair */
+static int
+zlib_pmd_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
+ uint32_t max_inflight_ops, int socket_id)
+{
+ struct zlib_qp *qp = NULL;
+
+ /* Free memory prior to re-allocation if needed. */
+ if (dev->data->queue_pairs[qp_id] != NULL)
+ zlib_pmd_qp_release(dev, qp_id);
+
+ /* Allocate the queue pair data structure. */
+ qp = rte_zmalloc_socket("ZLIB PMD Queue Pair", sizeof(*qp),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (qp == NULL)
+ return (-ENOMEM);
+
+ qp->id = qp_id;
+ dev->data->queue_pairs[qp_id] = qp;
+
+ if (zlib_pmd_qp_set_unique_name(dev, qp))
+ goto qp_setup_cleanup;
+
+ qp->processed_pkts = zlib_pmd_qp_create_processed_pkts_ring(qp,
+ max_inflight_ops, socket_id);
+ if (qp->processed_pkts == NULL)
+ goto qp_setup_cleanup;
+
+ memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
+ return 0;
+
+qp_setup_cleanup:
+ if (qp) {
+ rte_free(qp);
+ qp = NULL;
+ }
+ return -1;
+}
+
+/** Configure stream */
+static int
+zlib_pmd_stream_create(struct rte_compressdev *dev,
+ const struct rte_comp_xform *xform,
+ void **zstream)
+{
+ int ret = 0;
+ struct zlib_stream *stream;
+ struct zlib_private *internals = dev->data->dev_private;
+
+ if (xform == NULL) {
+ ZLIB_PMD_ERR("invalid xform struct");
+ return -EINVAL;
+ }
+
+ if (rte_mempool_get(internals->mp, zstream)) {
+ ZLIB_PMD_ERR("Couldn't get object from session mempool");
+ return -ENOMEM;
+ }
+ stream = *((struct zlib_stream **)zstream);
+
+ ret = zlib_set_stream_parameters(xform, stream);
+
+ if (ret < 0) {
+ ZLIB_PMD_ERR("failed configure session parameters");
+
+ memset(stream, 0, sizeof(struct zlib_stream));
+ /* Return session to mempool */
+ rte_mempool_put(internals->mp, stream);
+ return ret;
+ }
+
+ return 0;
+}
+
+/** Configure private xform */
+static int
+zlib_pmd_private_xform_create(struct rte_compressdev *dev,
+ const struct rte_comp_xform *xform,
+ void **private_xform)
+{
+ return zlib_pmd_stream_create(dev, xform, private_xform);
+}
+
+/** Clear the memory of stream so it doesn't leave key material behind */
+static int
+zlib_pmd_stream_free(__rte_unused struct rte_compressdev *dev,
+ void *zstream)
+{
+ struct zlib_stream *stream = (struct zlib_stream *)zstream;
+ if (!stream)
+ return -EINVAL;
+
+ stream->free(&stream->strm);
+ /* Zero out the whole structure */
+ memset(stream, 0, sizeof(struct zlib_stream));
+ struct rte_mempool *mp = rte_mempool_from_obj(stream);
+ rte_mempool_put(mp, stream);
+
+ return 0;
+}
+
+/** Clear the memory of stream so it doesn't leave key material behind */
+static int
+zlib_pmd_private_xform_free(struct rte_compressdev *dev,
+ void *private_xform)
+{
+ return zlib_pmd_stream_free(dev, private_xform);
+}
+
+struct rte_compressdev_ops zlib_pmd_ops = {
+ .dev_configure = zlib_pmd_config,
+ .dev_start = zlib_pmd_start,
+ .dev_stop = zlib_pmd_stop,
+ .dev_close = zlib_pmd_close,
+
+ .stats_get = zlib_pmd_stats_get,
+ .stats_reset = zlib_pmd_stats_reset,
+
+ .dev_infos_get = zlib_pmd_info_get,
+
+ .queue_pair_setup = zlib_pmd_qp_setup,
+ .queue_pair_release = zlib_pmd_qp_release,
+
+ .private_xform_create = zlib_pmd_private_xform_create,
+ .private_xform_free = zlib_pmd_private_xform_free,
+
+ .stream_create = NULL,
+ .stream_free = NULL
+};
+
+struct rte_compressdev_ops *rte_zlib_pmd_ops = &zlib_pmd_ops;
Code Review / deb_dpdk.git / blobdiff