@@ -7,6 +7,100 @@
#include "zlib_pmd_private.h"
+/** Parse comp xform and set private xform/stream parameters */
+int
+zlib_set_stream_parameters(const struct rte_comp_xform *xform,
+ struct zlib_stream *stream)
+{
+ int strategy, level, wbits;
+ z_stream *strm = &stream->strm;
+
+ /* allocate deflate state */
+ strm->zalloc = Z_NULL;
+ strm->zfree = Z_NULL;
+ strm->opaque = Z_NULL;
+
+ switch (xform->type) {
+ case RTE_COMP_COMPRESS:
+ /** Compression window bits */
+ switch (xform->compress.algo) {
+ case RTE_COMP_ALGO_DEFLATE:
+ wbits = -(xform->compress.window_size);
+ break;
+ default:
+ ZLIB_PMD_ERR("Compression algorithm not supported\n");
+ return -1;
+ }
+ /** Compression Level */
+ switch (xform->compress.level) {
+ case RTE_COMP_LEVEL_PMD_DEFAULT:
+ level = Z_DEFAULT_COMPRESSION;
+ break;
+ case RTE_COMP_LEVEL_NONE:
+ level = Z_NO_COMPRESSION;
+ break;
+ case RTE_COMP_LEVEL_MIN:
+ level = Z_BEST_SPEED;
+ break;
+ case RTE_COMP_LEVEL_MAX:
+ level = Z_BEST_COMPRESSION;
+ break;
+ default:
+ level = xform->compress.level;
+ if (level < RTE_COMP_LEVEL_MIN ||
+ level > RTE_COMP_LEVEL_MAX) {
+ ZLIB_PMD_ERR("Compression level %d "
+ "not supported\n",
+ level);
+ return -1;
+ }
+ break;
+ }
+ /** Compression strategy */
+ switch (xform->compress.deflate.huffman) {
+ case RTE_COMP_HUFFMAN_DEFAULT:
+ strategy = Z_DEFAULT_STRATEGY;
+ break;
+ case RTE_COMP_HUFFMAN_FIXED:
+ strategy = Z_FIXED;
+ break;
+ case RTE_COMP_HUFFMAN_DYNAMIC:
+ strategy = Z_DEFAULT_STRATEGY;
+ break;
+ default:
+ ZLIB_PMD_ERR("Compression strategy not supported\n");
+ return -1;
+ }
+ if (deflateInit2(strm, level,
+ Z_DEFLATED, wbits,
+ DEF_MEM_LEVEL, strategy) != Z_OK) {
+ ZLIB_PMD_ERR("Deflate init failed\n");
+ return -1;
+ }
+ break;
+
+ case RTE_COMP_DECOMPRESS:
+ /** window bits */
+ switch (xform->decompress.algo) {
+ case RTE_COMP_ALGO_DEFLATE:
+ wbits = -(xform->decompress.window_size);
+ break;
+ default:
+ ZLIB_PMD_ERR("Compression algorithm not supported\n");
+ return -1;
+ }
+
+ if (inflateInit2(strm, wbits) != Z_OK) {
+ ZLIB_PMD_ERR("Inflate init failed\n");
+ return -1;
+ }
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
static int
zlib_create(const char *name,
struct rte_vdev_device *vdev,
@@ -214,6 +214,76 @@ zlib_pmd_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
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,
@@ -228,8 +298,8 @@ struct rte_compressdev_ops zlib_pmd_ops = {
.queue_pair_setup = zlib_pmd_qp_setup,
.queue_pair_release = zlib_pmd_qp_release,
- .private_xform_create = NULL,
- .private_xform_free = NULL,
+ .private_xform_create = zlib_pmd_private_xform_create,
+ .private_xform_free = zlib_pmd_private_xform_free,
.stream_create = NULL,
.stream_free = NULL
@@ -61,6 +61,10 @@ struct zlib_priv_xform {
struct zlib_stream stream;
} __rte_cache_aligned;
+int
+zlib_set_stream_parameters(const struct rte_comp_xform *xform,
+ struct zlib_stream *stream);
+
/** Device specific operations function pointer structure */
extern struct rte_compressdev_ops *rte_zlib_pmd_ops;