compress/zlib: add basic ops

Implement device configure and queue pair
setup PMD ops

Signed-off-by: Sunila Sahu <sunila.sahu@caviumnetworks.com>
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
This commit is contained in:
Ashish Gupta 2018-07-24 20:35:33 +05:30 committed by Pablo de Lara
parent 0c4e4c16b0
commit 27422fc33c
5 changed files with 276 additions and 1 deletions

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@ -24,5 +24,6 @@ LDLIBS += -lrte_bus_vdev
# library source files
SRCS-$(CONFIG_RTE_LIBRTE_PMD_ZLIB) += zlib_pmd.c
SRCS-$(CONFIG_RTE_LIBRTE_PMD_ZLIB) += zlib_pmd_ops.c
include $(RTE_SDK)/mk/rte.lib.mk

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@ -7,7 +7,7 @@ if not dep.found()
endif
deps += 'bus_vdev'
sources = files('zlib_pmd.c')
sources = files('zlib_pmd.c', 'zlib_pmd_ops.c')
ext_deps += dep
pkgconfig_extra_libs += '-lz'

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@ -21,6 +21,8 @@ zlib_create(const char *name,
return -ENODEV;
}
dev->dev_ops = rte_zlib_pmd_ops;
return 0;
}

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@ -0,0 +1,237 @@
/* 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;
}
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 = NULL,
.private_xform_free = NULL,
.stream_create = NULL,
.stream_free = NULL
};
struct rte_compressdev_ops *rte_zlib_pmd_ops = &zlib_pmd_ops;

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@ -27,6 +27,41 @@ int zlib_logtype_driver;
ZLIB_PMD_LOG(WARNING, fmt, ## args)
struct zlib_private {
struct rte_mempool *mp;
};
struct zlib_qp {
struct rte_ring *processed_pkts;
/**< Ring for placing process packets */
struct rte_compressdev_stats qp_stats;
/**< Queue pair statistics */
uint16_t id;
/**< Queue Pair Identifier */
char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
/**< Unique Queue Pair Name */
} __rte_cache_aligned;
/* Algorithm handler function prototype */
typedef void (*comp_func_t)(struct rte_comp_op *op, z_stream *strm);
typedef int (*comp_free_t)(z_stream *strm);
/** ZLIB Stream structure */
struct zlib_stream {
z_stream strm;
/**< zlib stream structure */
comp_func_t comp;
/**< Operation (compression/decompression) */
comp_free_t free;
/**< Free Operation (compression/decompression) */
} __rte_cache_aligned;
/** ZLIB private xform structure */
struct zlib_priv_xform {
struct zlib_stream stream;
} __rte_cache_aligned;
/** Device specific operations function pointer structure */
extern struct rte_compressdev_ops *rte_zlib_pmd_ops;
#endif /* _RTE_ZLIB_PMD_PRIVATE_H_ */