compress/isal: add ISA-L compression functionality

Adds compression functionality, this sets internal ISA-L
structures, provides input & output mbuf addresses,
executes compression, which ISA-L calls deflate,
and finally error checks.

Signed-off-by: Lee Daly <lee.daly@intel.com>
Acked-by: Greg Tucker <greg.b.tucker@intel.com>
Reviewed-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

diff --git a/drivers/compress/isal/isal_compress_pmd.c b/drivers/compress/isal/isal_compress_pmd.c
index aaa0593..dbdee39 100644 (file)
--- a/drivers/compress/isal/isal_compress_pmd.c
+++ b/drivers/compress/isal/isal_compress_pmd.c
@@ -6,6 +6,7 @@
 #include <rte_bus_vdev.h>
 #include <rte_common.h>
 #include <rte_malloc.h>
+#include <rte_mbuf.h>
 #include <rte_compressdev_pmd.h>
 
 #include "isal_compress_pmd_private.h"
@@ -187,14 +188,92 @@ isal_comp_set_priv_xform_parameters(struct isal_priv_xform *priv_xform,
        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;
+}
+
 /* Process compression/decompression operation */
 static int
-process_op(struct isal_comp_qp *qp __rte_unused,
-               struct rte_comp_op *op __rte_unused,
+process_op(struct isal_comp_qp *qp, struct rte_comp_op *op,
                struct isal_priv_xform *priv_xform)
 {
        switch (priv_xform->type) {
        case RTE_COMP_COMPRESS:
+               process_isal_deflate(op, qp, priv_xform);
                break;
        case RTE_COMP_DECOMPRESS:
                break;

diff --git a/drivers/compress/isal/isal_compress_pmd_ops.c b/drivers/compress/isal/isal_compress_pmd_ops.c
index dcf79bf..77d5d4b 100644 (file)
--- a/drivers/compress/isal/isal_compress_pmd_ops.c
+++ b/drivers/compress/isal/isal_compress_pmd_ops.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(c) 2018 Intel Corporation
  */
+#include <isa-l.h>
 
 #include <rte_common.h>
 #include <rte_compressdev_pmd.h>
@@ -9,6 +10,15 @@
 #include "isal_compress_pmd_private.h"
 
 static const struct rte_compressdev_capabilities isal_pmd_capabilities[] = {
+       {
+               .algo = RTE_COMP_ALGO_DEFLATE,
+               .comp_feature_flags =   RTE_COMP_FF_SHAREABLE_PRIV_XFORM,
+               .window_size = {
+                       .min = 15,
+                       .max = 15,
+                       .increment = 0
+               },
+       },
        RTE_COMP_END_OF_CAPABILITIES_LIST()
 };
 
@@ -146,6 +156,12 @@ isal_comp_pmd_qp_release(struct rte_compressdev *dev, uint16_t qp_id)
        if (qp == NULL)
                return -EINVAL;
 
+       if (qp->stream != NULL)
+               rte_free(qp->stream);
+
+       if (qp->stream->level_buf != NULL)
+               rte_free(qp->stream->level_buf);
+
        if (dev->data->queue_pairs[qp_id] != NULL)
                rte_free(dev->data->queue_pairs[qp_id]);
 
@@ -214,6 +230,16 @@ isal_comp_pmd_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
                return (-ENOMEM);
        }
 
+       /* Initialize memory for compression stream structure */
+       qp->stream = rte_zmalloc_socket("Isa-l compression stream ",
+                       sizeof(struct isal_zstream),  RTE_CACHE_LINE_SIZE,
+                       socket_id);
+
+       /* Initialize memory for compression level buffer */
+       qp->stream->level_buf = rte_zmalloc_socket("Isa-l compression lev_buf",
+                       ISAL_DEF_LVL3_DEFAULT, RTE_CACHE_LINE_SIZE,
+                       socket_id);
+
        qp->id = qp_id;
        dev->data->queue_pairs[qp_id] = qp;
 

diff --git a/drivers/compress/isal/isal_compress_pmd_private.h b/drivers/compress/isal/isal_compress_pmd_private.h
index 7505c76..6ba34a6 100644 (file)
--- a/drivers/compress/isal/isal_compress_pmd_private.h
+++ b/drivers/compress/isal/isal_compress_pmd_private.h
@@ -28,6 +28,8 @@ struct isal_comp_qp {
        struct rte_ring *processed_pkts;
        /* Queue pair statistics */
        struct rte_compressdev_stats qp_stats;
+       /* Compression stream information*/
+       struct isal_zstream *stream;
        /* Number of free elements on ring */
        uint16_t num_free_elements;
 } __rte_cache_aligned;