+#include "isal_compress_pmd_private.h"
+
+#define RTE_COMP_ISAL_WINDOW_SIZE 15
+#define RTE_COMP_ISAL_LEVEL_ZERO 0 /* ISA-L Level 0 used for fixed Huffman */
+#define RTE_COMP_ISAL_LEVEL_ONE 1
+#define RTE_COMP_ISAL_LEVEL_TWO 2
+#define RTE_COMP_ISAL_LEVEL_THREE 3 /* Optimised for AVX512 & AVX2 only */
+
+int isal_logtype_driver;
+
+/* Verify and set private xform parameters */
+int
+isal_comp_set_priv_xform_parameters(struct isal_priv_xform *priv_xform,
+ const struct rte_comp_xform *xform)
+{
+ if (xform == NULL)
+ return -EINVAL;
+
+ /* Set compression private xform variables */
+ if (xform->type == RTE_COMP_COMPRESS) {
+ /* Set private xform type - COMPRESS/DECOMPRESS */
+ priv_xform->type = RTE_COMP_COMPRESS;
+
+ /* Set private xform algorithm */
+ if (xform->compress.algo != RTE_COMP_ALGO_DEFLATE) {
+ if (xform->compress.algo == RTE_COMP_ALGO_NULL) {
+ ISAL_PMD_LOG(ERR, "By-pass not supported\n");
+ return -ENOTSUP;
+ }
+ ISAL_PMD_LOG(ERR, "Algorithm not supported\n");
+ return -ENOTSUP;
+ }
+ priv_xform->compress.algo = RTE_COMP_ALGO_DEFLATE;
+
+ /* Set private xform checksum - raw deflate by default */
+ if (xform->compress.chksum != RTE_COMP_CHECKSUM_NONE) {
+ ISAL_PMD_LOG(ERR, "Checksum not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform window size, 32K supported */
+ if (xform->compress.window_size == RTE_COMP_ISAL_WINDOW_SIZE)
+ priv_xform->compress.window_size =
+ RTE_COMP_ISAL_WINDOW_SIZE;
+ else {
+ ISAL_PMD_LOG(ERR, "Window size not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform huffman type */
+ switch (xform->compress.deflate.huffman) {
+ case(RTE_COMP_HUFFMAN_DEFAULT):
+ priv_xform->compress.deflate.huffman =
+ RTE_COMP_HUFFMAN_DEFAULT;
+ break;
+ case(RTE_COMP_HUFFMAN_FIXED):
+ priv_xform->compress.deflate.huffman =
+ RTE_COMP_HUFFMAN_FIXED;
+ break;
+ case(RTE_COMP_HUFFMAN_DYNAMIC):
+ priv_xform->compress.deflate.huffman =
+ RTE_COMP_HUFFMAN_DYNAMIC;
+ break;
+ default:
+ ISAL_PMD_LOG(ERR, "Huffman code not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform level.
+ * Checking compliance with compressdev API, -1 <= level => 9
+ */
+ if (xform->compress.level < RTE_COMP_LEVEL_PMD_DEFAULT ||
+ xform->compress.level > RTE_COMP_LEVEL_MAX) {
+ ISAL_PMD_LOG(ERR, "Compression level out of range\n");
+ return -EINVAL;
+ }
+ /* Check for Compressdev API level 0, No compression
+ * not supported in ISA-L
+ */
+ else if (xform->compress.level == RTE_COMP_LEVEL_NONE) {
+ ISAL_PMD_LOG(ERR, "No Compression not supported\n");
+ return -ENOTSUP;
+ }
+ /* If using fixed huffman code, level must be 0 */
+ else if (priv_xform->compress.deflate.huffman ==
+ RTE_COMP_HUFFMAN_FIXED) {
+ ISAL_PMD_LOG(DEBUG, "ISA-L level 0 used due to a"
+ " fixed huffman code\n");
+ priv_xform->compress.level = RTE_COMP_ISAL_LEVEL_ZERO;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL0_DEFAULT;
+ } else {
+ /* Mapping API levels to ISA-L levels 1,2 & 3 */
+ switch (xform->compress.level) {
+ case RTE_COMP_LEVEL_PMD_DEFAULT:
+ /* Default is 1 if not using fixed huffman */
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_ONE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL1_DEFAULT;
+ break;
+ case RTE_COMP_LEVEL_MIN:
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_ONE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL1_DEFAULT;
+ break;
+ case RTE_COMP_ISAL_LEVEL_TWO:
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_TWO;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL2_DEFAULT;
+ break;
+ /* Level 3 or higher requested */
+ default:
+ /* Check for AVX512, to use ISA-L level 3 */
+ if (rte_cpu_get_flag_enabled(
+ RTE_CPUFLAG_AVX512F)) {
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_THREE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL3_DEFAULT;
+ }
+ /* Check for AVX2, to use ISA-L level 3 */
+ else if (rte_cpu_get_flag_enabled(
+ RTE_CPUFLAG_AVX2)) {
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_THREE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL3_DEFAULT;
+ } else {
+ ISAL_PMD_LOG(DEBUG, "Requested ISA-L level"
+ " 3 or above; Level 3 optimized"
+ " for AVX512 & AVX2 only."
+ " level changed to 2.\n");
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_TWO;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL2_DEFAULT;
+ }
+ }
+ }
+ }
+
+ /* Set decompression private xform variables */
+ else if (xform->type == RTE_COMP_DECOMPRESS) {
+
+ /* Set private xform type - COMPRESS/DECOMPRESS */
+ priv_xform->type = RTE_COMP_DECOMPRESS;
+
+ /* Set private xform algorithm */
+ if (xform->decompress.algo != RTE_COMP_ALGO_DEFLATE) {
+ if (xform->decompress.algo == RTE_COMP_ALGO_NULL) {
+ ISAL_PMD_LOG(ERR, "By pass not supported\n");
+ return -ENOTSUP;
+ }
+ ISAL_PMD_LOG(ERR, "Algorithm not supported\n");
+ return -ENOTSUP;
+ }
+ priv_xform->decompress.algo = RTE_COMP_ALGO_DEFLATE;
+
+ /* Set private xform checksum - raw deflate by default */
+ if (xform->compress.chksum != RTE_COMP_CHECKSUM_NONE) {
+ ISAL_PMD_LOG(ERR, "Checksum not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform window size, 32K supported */
+ if (xform->decompress.window_size == RTE_COMP_ISAL_WINDOW_SIZE)
+ priv_xform->decompress.window_size =
+ RTE_COMP_ISAL_WINDOW_SIZE;
+ else {
+ ISAL_PMD_LOG(ERR, "Window size not supported\n");
+ return -ENOTSUP;
+ }
+ }
+ return 0;
+}
+
+/* Stateless Compression Function */
+static int
+process_isal_deflate(struct rte_comp_op *op, struct isal_comp_qp *qp,
+ struct isal_priv_xform *priv_xform)
+{
+ int ret = 0;
+ op->status = RTE_COMP_OP_STATUS_SUCCESS;
+
+ /* Required due to init clearing level_buf */
+ uint8_t *temp_level_buf = qp->stream->level_buf;
+
+ /* Initialize compression stream */
+ isal_deflate_stateless_init(qp->stream);
+
+ qp->stream->level_buf = temp_level_buf;
+
+ /* Stateless operation, input will be consumed in one go */
+ qp->stream->flush = NO_FLUSH;
+
+ /* set op level & intermediate level buffer */
+ qp->stream->level = priv_xform->compress.level;
+ qp->stream->level_buf_size = priv_xform->level_buffer_size;
+
+ /* Point compression stream structure to input/output buffers */
+ qp->stream->avail_in = op->src.length;
+ qp->stream->next_in = rte_pktmbuf_mtod(op->m_src, uint8_t *);
+ qp->stream->avail_out = op->m_dst->data_len;
+ qp->stream->next_out = rte_pktmbuf_mtod(op->m_dst, uint8_t *);
+ qp->stream->end_of_stream = 1; /* All input consumed in one go */
+
+ if (unlikely(!qp->stream->next_in || !qp->stream->next_out)) {
+ ISAL_PMD_LOG(ERR, "Invalid source or destination buffers\n");
+ op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
+ return -1;
+ }
+
+ /* Set op huffman code */
+ if (priv_xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED)
+ isal_deflate_set_hufftables(qp->stream, NULL,
+ IGZIP_HUFFTABLE_STATIC);
+ else if (priv_xform->compress.deflate.huffman ==
+ RTE_COMP_HUFFMAN_DEFAULT)
+ isal_deflate_set_hufftables(qp->stream, NULL,
+ IGZIP_HUFFTABLE_DEFAULT);
+ /* Dynamically change the huffman code to suit the input data */
+ else if (priv_xform->compress.deflate.huffman ==
+ RTE_COMP_HUFFMAN_DYNAMIC)
+ isal_deflate_set_hufftables(qp->stream, NULL,
+ IGZIP_HUFFTABLE_DEFAULT);
+
+ /* Execute compression operation */
+ ret = isal_deflate_stateless(qp->stream);
+
+ /* Check that output buffer did not run out of space */
+ if (ret == STATELESS_OVERFLOW) {
+ ISAL_PMD_LOG(ERR, "Output buffer not big enough\n");
+ op->status = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
+ return ret;
+ }
+
+ /* Check that input buffer has been fully consumed */
+ if (qp->stream->avail_in != (uint32_t)0) {
+ ISAL_PMD_LOG(ERR, "Input buffer could not be read entirely\n");
+ op->status = RTE_COMP_OP_STATUS_ERROR;
+ return -1;
+ }
+
+ if (ret != COMP_OK) {
+ op->status = RTE_COMP_OP_STATUS_ERROR;
+ return ret;
+ }
+
+ op->consumed = qp->stream->total_in;
+ op->produced = qp->stream->total_out;
+
+ return ret;
+}
+
+/* Stateless Decompression Function */