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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017-2018 Intel Corporation
*/
#include "rte_comp.h"
#include "rte_compressdev.h"
#include "rte_compressdev_internal.h"
const char * __rte_experimental
rte_comp_get_feature_name(uint64_t flag)
{
switch (flag) {
case RTE_COMP_FF_STATEFUL_COMPRESSION:
return "STATEFUL_COMPRESSION";
case RTE_COMP_FF_STATEFUL_DECOMPRESSION:
return "STATEFUL_DECOMPRESSION";
case RTE_COMP_FF_MBUF_SCATTER_GATHER:
return "MBUF_SCATTER_GATHER";
case RTE_COMP_FF_MULTI_PKT_CHECKSUM:
return "MULTI_PKT_CHECKSUM";
case RTE_COMP_FF_ADLER32_CHECKSUM:
return "ADLER32_CHECKSUM";
case RTE_COMP_FF_CRC32_CHECKSUM:
return "CRC32_CHECKSUM";
case RTE_COMP_FF_CRC32_ADLER32_CHECKSUM:
return "CRC32_ADLER32_CHECKSUM";
case RTE_COMP_FF_NONCOMPRESSED_BLOCKS:
return "NONCOMPRESSED_BLOCKS";
case RTE_COMP_FF_SHA1_HASH:
return "SHA1_HASH";
case RTE_COMP_FF_SHA2_SHA256_HASH:
return "SHA2_SHA256_HASH";
case RTE_COMP_FF_SHAREABLE_PRIV_XFORM:
return "SHAREABLE_PRIV_XFORM";
default:
return NULL;
}
}
/**
* Reset the fields of an operation to their default values.
*
* @note The private data associated with the operation is not zeroed.
*
* @param op
* The operation to be reset
*/
static inline void
rte_comp_op_reset(struct rte_comp_op *op)
{
struct rte_mempool *tmp_mp = op->mempool;
rte_iova_t tmp_iova_addr = op->iova_addr;
memset(op, 0, sizeof(struct rte_comp_op));
op->status = RTE_COMP_OP_STATUS_NOT_PROCESSED;
op->iova_addr = tmp_iova_addr;
op->mempool = tmp_mp;
}
/**
* Private data structure belonging to an operation pool.
*/
struct rte_comp_op_pool_private {
uint16_t user_size;
/**< Size of private user data with each operation. */
};
/**
* Bulk allocate raw element from mempool and return as comp operations
*
* @param mempool
* Compress operation mempool
* @param ops
* Array to place allocated operations
* @param nb_ops
* Number of operations to allocate
* @return
* - 0: Success
* - -ENOENT: Not enough entries in the mempool; no ops are retrieved.
*/
static inline int
rte_comp_op_raw_bulk_alloc(struct rte_mempool *mempool,
struct rte_comp_op **ops, uint16_t nb_ops)
{
if (rte_mempool_get_bulk(mempool, (void **)ops, nb_ops) == 0)
return nb_ops;
return 0;
}
/** Initialise rte_comp_op mempool element */
static void
rte_comp_op_init(struct rte_mempool *mempool,
__rte_unused void *opaque_arg,
void *_op_data,
__rte_unused unsigned int i)
{
struct rte_comp_op *op = _op_data;
memset(_op_data, 0, mempool->elt_size);
op->status = RTE_COMP_OP_STATUS_NOT_PROCESSED;
op->iova_addr = rte_mem_virt2iova(_op_data);
op->mempool = mempool;
}
struct rte_mempool * __rte_experimental
rte_comp_op_pool_create(const char *name,
unsigned int nb_elts, unsigned int cache_size,
uint16_t user_size, int socket_id)
{
struct rte_comp_op_pool_private *priv;
unsigned int elt_size = sizeof(struct rte_comp_op) + user_size;
/* lookup mempool in case already allocated */
struct rte_mempool *mp = rte_mempool_lookup(name);
if (mp != NULL) {
priv = (struct rte_comp_op_pool_private *)
rte_mempool_get_priv(mp);
if (mp->elt_size != elt_size ||
mp->cache_size < cache_size ||
mp->size < nb_elts ||
priv->user_size < user_size) {
mp = NULL;
COMPRESSDEV_LOG(ERR,
"Mempool %s already exists but with incompatible parameters",
name);
return NULL;
}
return mp;
}
mp = rte_mempool_create(
name,
nb_elts,
elt_size,
cache_size,
sizeof(struct rte_comp_op_pool_private),
NULL,
NULL,
rte_comp_op_init,
NULL,
socket_id,
0);
if (mp == NULL) {
COMPRESSDEV_LOG(ERR, "Failed to create mempool %s", name);
return NULL;
}
priv = (struct rte_comp_op_pool_private *)
rte_mempool_get_priv(mp);
priv->user_size = user_size;
return mp;
}
struct rte_comp_op * __rte_experimental
rte_comp_op_alloc(struct rte_mempool *mempool)
{
struct rte_comp_op *op = NULL;
int retval;
retval = rte_comp_op_raw_bulk_alloc(mempool, &op, 1);
if (unlikely(retval < 0))
return NULL;
rte_comp_op_reset(op);
return op;
}
int __rte_experimental
rte_comp_op_bulk_alloc(struct rte_mempool *mempool,
struct rte_comp_op **ops, uint16_t nb_ops)
{
int ret;
uint16_t i;
ret = rte_comp_op_raw_bulk_alloc(mempool, ops, nb_ops);
if (unlikely(ret < nb_ops))
return ret;
for (i = 0; i < nb_ops; i++)
rte_comp_op_reset(ops[i]);
return nb_ops;
}
/**
* free operation structure
* If operation has been allocate from a rte_mempool, then the operation will
* be returned to the mempool.
*
* @param op
* Compress operation
*/
void __rte_experimental
rte_comp_op_free(struct rte_comp_op *op)
{
if (op != NULL && op->mempool != NULL)
rte_mempool_put(op->mempool, op);
}
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