drivers/compress/qat/qat_comp.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2019 Intel Corporation
   3  */
   4
   5 #include <rte_mempool.h>
   6 #include <rte_mbuf.h>
   7 #include <rte_hexdump.h>
   8 #include <rte_comp.h>
   9 #include <rte_bus_pci.h>
  10 #include <rte_byteorder.h>
  11 #include <rte_memcpy.h>
  12 #include <rte_common.h>
  13 #include <rte_spinlock.h>
  14 #include <rte_log.h>
  15 #include <rte_malloc.h>
  16
  17 #include "qat_logs.h"
  18 #include "qat_comp.h"
  19 #include "qat_comp_pmd.h"
  20
  21
  22 int
  23 qat_comp_build_request(void *in_op, uint8_t *out_msg,
  24                        void *op_cookie,
  25                        enum qat_device_gen qat_dev_gen __rte_unused)
  26 {
  27         struct rte_comp_op *op = in_op;
  28         struct qat_comp_op_cookie *cookie =
  29                         (struct qat_comp_op_cookie *)op_cookie;
  30         struct qat_comp_xform *qat_xform = op->private_xform;
  31         const uint8_t *tmpl = (uint8_t *)&qat_xform->qat_comp_req_tmpl;
  32         struct icp_qat_fw_comp_req *comp_req =
  33             (struct icp_qat_fw_comp_req *)out_msg;
  34
  35         if (unlikely(op->op_type != RTE_COMP_OP_STATELESS)) {
  36                 QAT_DP_LOG(ERR, "QAT PMD only supports stateless compression "
  37                                 "operation requests, op (%p) is not a "
  38                                 "stateless operation.", op);
  39                 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
  40                 return -EINVAL;
  41         }
  42
  43         rte_mov128(out_msg, tmpl);
  44         comp_req->comn_mid.opaque_data = (uint64_t)(uintptr_t)op;
  45
  46         if (likely(qat_xform->qat_comp_request_type ==
  47                     QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
  48                 if (unlikely(op->src.length > QAT_FALLBACK_THLD)) {
  49
  50                         /* fallback to fixed compression */
  51                         comp_req->comn_hdr.service_cmd_id =
  52                                         ICP_QAT_FW_COMP_CMD_STATIC;
  53
  54                         ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
  55                                         ICP_QAT_FW_SLICE_DRAM_WR);
  56
  57                         ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
  58                                         ICP_QAT_FW_SLICE_NULL);
  59                         ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
  60                                         ICP_QAT_FW_SLICE_NULL);
  61
  62                         QAT_DP_LOG(DEBUG, "QAT PMD: fallback to fixed "
  63                                    "compression! IM buffer size can be too low "
  64                                    "for produced data.\n Please use input "
  65                                    "buffer length lower than %d bytes",
  66                                    QAT_FALLBACK_THLD);
  67                 }
  68         }
  69
  70         /* common for sgl and flat buffers */
  71         comp_req->comp_pars.comp_len = op->src.length;
  72         comp_req->comp_pars.out_buffer_sz = rte_pktmbuf_pkt_len(op->m_dst) -
  73                         op->dst.offset;
  74
  75         if (op->m_src->next != NULL || op->m_dst->next != NULL) {
  76                 /* sgl */
  77                 int ret = 0;
  78
  79                 ICP_QAT_FW_COMN_PTR_TYPE_SET(comp_req->comn_hdr.comn_req_flags,
  80                                 QAT_COMN_PTR_TYPE_SGL);
  81
  82                 if (unlikely(op->m_src->nb_segs > cookie->src_nb_elems)) {
  83                         /* we need to allocate more elements in SGL*/
  84                         void *tmp;
  85
  86                         tmp = rte_realloc_socket(cookie->qat_sgl_src_d,
  87                                           sizeof(struct qat_sgl) +
  88                                           sizeof(struct qat_flat_buf) *
  89                                           op->m_src->nb_segs, 64,
  90                                           cookie->socket_id);
  91
  92                         if (unlikely(tmp == NULL)) {
  93                                 QAT_DP_LOG(ERR, "QAT PMD can't allocate memory"
  94                                            " for %d elements of SGL",
  95                                            op->m_src->nb_segs);
  96                                 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
  97                                 return -ENOMEM;
  98                         }
  99                         /* new SGL is valid now */
 100                         cookie->qat_sgl_src_d = (struct qat_sgl *)tmp;
 101                         cookie->src_nb_elems = op->m_src->nb_segs;
 102                         cookie->qat_sgl_src_phys_addr =
 103                                 rte_malloc_virt2iova(cookie->qat_sgl_src_d);
 104                 }
 105
 106                 ret = qat_sgl_fill_array(op->m_src,
 107                                 op->src.offset,
 108                                 cookie->qat_sgl_src_d,
 109                                 op->src.length,
 110                                 cookie->src_nb_elems);
 111                 if (ret) {
 112                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill source sgl array");
 113                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 114                         return ret;
 115                 }
 116
 117                 if (unlikely(op->m_dst->nb_segs > cookie->dst_nb_elems)) {
 118                         /* we need to allocate more elements in SGL*/
 119                         struct qat_sgl *tmp;
 120
 121                         tmp = rte_realloc_socket(cookie->qat_sgl_dst_d,
 122                                           sizeof(struct qat_sgl) +
 123                                           sizeof(struct qat_flat_buf) *
 124                                           op->m_dst->nb_segs, 64,
 125                                           cookie->socket_id);
 126
 127                         if (unlikely(tmp == NULL)) {
 128                                 QAT_DP_LOG(ERR, "QAT PMD can't allocate memory"
 129                                            " for %d elements of SGL",
 130                                            op->m_dst->nb_segs);
 131                                 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 132                                 return -EINVAL;
 133                         }
 134                         /* new SGL is valid now */
 135                         cookie->qat_sgl_dst_d = (struct qat_sgl *)tmp;
 136                         cookie->dst_nb_elems = op->m_dst->nb_segs;
 137                         cookie->qat_sgl_dst_phys_addr =
 138                                 rte_malloc_virt2iova(cookie->qat_sgl_dst_d);
 139                 }
 140
 141                 ret = qat_sgl_fill_array(op->m_dst,
 142                                 op->dst.offset,
 143                                 cookie->qat_sgl_dst_d,
 144                                 comp_req->comp_pars.out_buffer_sz,
 145                                 cookie->dst_nb_elems);
 146                 if (ret) {
 147                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill dest. sgl array");
 148                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 149                         return ret;
 150                 }
 151
 152                 comp_req->comn_mid.src_data_addr =
 153                                 cookie->qat_sgl_src_phys_addr;
 154                 comp_req->comn_mid.dest_data_addr =
 155                                 cookie->qat_sgl_dst_phys_addr;
 156                 comp_req->comn_mid.src_length = 0;
 157                 comp_req->comn_mid.dst_length = 0;
 158
 159         } else {
 160                 /* flat aka linear buffer */
 161                 ICP_QAT_FW_COMN_PTR_TYPE_SET(comp_req->comn_hdr.comn_req_flags,
 162                                 QAT_COMN_PTR_TYPE_FLAT);
 163                 comp_req->comn_mid.src_length = op->src.length;
 164                 comp_req->comn_mid.dst_length =
 165                                 comp_req->comp_pars.out_buffer_sz;
 166
 167                 comp_req->comn_mid.src_data_addr =
 168                     rte_pktmbuf_mtophys_offset(op->m_src, op->src.offset);
 169                 comp_req->comn_mid.dest_data_addr =
 170                     rte_pktmbuf_mtophys_offset(op->m_dst, op->dst.offset);
 171         }
 172
 173 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 174         QAT_DP_LOG(DEBUG, "Direction: %s",
 175             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 176                             "decompression" : "compression");
 177         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message:", comp_req,
 178                     sizeof(struct icp_qat_fw_comp_req));
 179 #endif
 180         return 0;
 181 }
 182
 183 int
 184 qat_comp_process_response(void **op, uint8_t *resp, uint64_t *dequeue_err_count)
 185 {
 186         struct icp_qat_fw_comp_resp *resp_msg =
 187                         (struct icp_qat_fw_comp_resp *)resp;
 188         struct rte_comp_op *rx_op = (struct rte_comp_op *)(uintptr_t)
 189                         (resp_msg->opaque_data);
 190         struct qat_comp_xform *qat_xform = (struct qat_comp_xform *)
 191                                 (rx_op->private_xform);
 192         int err = resp_msg->comn_resp.comn_status &
 193                         ((1 << QAT_COMN_RESP_CMP_STATUS_BITPOS) |
 194                          (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS));
 195
 196 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 197         QAT_DP_LOG(DEBUG, "Direction: %s",
 198             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 199             "decompression" : "compression");
 200         QAT_DP_HEXDUMP_LOG(DEBUG,  "qat_response:", (uint8_t *)resp_msg,
 201                         sizeof(struct icp_qat_fw_comp_resp));
 202 #endif
 203
 204         if (likely(qat_xform->qat_comp_request_type
 205                         != QAT_COMP_REQUEST_DECOMPRESS)) {
 206                 if (unlikely(ICP_QAT_FW_COMN_HDR_CNV_FLAG_GET(
 207                                 resp_msg->comn_resp.hdr_flags)
 208                                         == ICP_QAT_FW_COMP_NO_CNV)) {
 209                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 210                         rx_op->debug_status = ERR_CODE_QAT_COMP_WRONG_FW;
 211                         *op = (void *)rx_op;
 212                         QAT_DP_LOG(ERR, "QAT has wrong firmware");
 213                         ++(*dequeue_err_count);
 214                         return 0;
 215                 }
 216         }
 217
 218         if (err) {
 219                 if (unlikely((err & (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS))
 220                              && (qat_xform->qat_comp_request_type
 221                                  == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS))) {
 222                         QAT_DP_LOG(ERR, "QAT intermediate buffer may be too "
 223                             "small for output, try configuring a larger size");
 224                 }
 225
 226                 int8_t cmp_err_code =
 227                         (int8_t)resp_msg->comn_resp.comn_error.cmp_err_code;
 228                 int8_t xlat_err_code =
 229                         (int8_t)resp_msg->comn_resp.comn_error.xlat_err_code;
 230
 231                 if ((cmp_err_code == ERR_CODE_OVERFLOW_ERROR && !xlat_err_code)
 232                                 ||
 233                     (!cmp_err_code && xlat_err_code == ERR_CODE_OVERFLOW_ERROR)
 234                                 ||
 235                     (cmp_err_code == ERR_CODE_OVERFLOW_ERROR &&
 236                      xlat_err_code == ERR_CODE_OVERFLOW_ERROR))
 237                         rx_op->status =
 238                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 239                 else
 240                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 241
 242                 ++(*dequeue_err_count);
 243                 rx_op->debug_status =
 244                         *((uint16_t *)(&resp_msg->comn_resp.comn_error));
 245         } else {
 246                 struct icp_qat_fw_resp_comp_pars *comp_resp =
 247                   (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
 248
 249                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 250                 rx_op->consumed = comp_resp->input_byte_counter;
 251                 rx_op->produced = comp_resp->output_byte_counter;
 252
 253                 if (qat_xform->checksum_type != RTE_COMP_CHECKSUM_NONE) {
 254                         if (qat_xform->checksum_type == RTE_COMP_CHECKSUM_CRC32)
 255                                 rx_op->output_chksum = comp_resp->curr_crc32;
 256                         else if (qat_xform->checksum_type ==
 257                                         RTE_COMP_CHECKSUM_ADLER32)
 258                                 rx_op->output_chksum = comp_resp->curr_adler_32;
 259                         else
 260                                 rx_op->output_chksum = comp_resp->curr_chksum;
 261                 }
 262         }
 263         *op = (void *)rx_op;
 264
 265         return 0;
 266 }
 267
 268 unsigned int
 269 qat_comp_xform_size(void)
 270 {
 271         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_xform), 8);
 272 }
 273
 274 static void qat_comp_create_req_hdr(struct icp_qat_fw_comn_req_hdr *header,
 275                                     enum qat_comp_request_type request)
 276 {
 277         if (request == QAT_COMP_REQUEST_FIXED_COMP_STATELESS)
 278                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
 279         else if (request == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)
 280                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DYNAMIC;
 281         else if (request == QAT_COMP_REQUEST_DECOMPRESS)
 282                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
 283
 284         header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
 285         header->hdr_flags =
 286             ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
 287
 288         header->comn_req_flags = ICP_QAT_FW_COMN_FLAGS_BUILD(
 289             QAT_COMN_CD_FLD_TYPE_16BYTE_DATA, QAT_COMN_PTR_TYPE_FLAT);
 290 }
 291
 292 static int qat_comp_create_templates(struct qat_comp_xform *qat_xform,
 293                         const struct rte_memzone *interm_buff_mz,
 294                         const struct rte_comp_xform *xform)
 295 {
 296         struct icp_qat_fw_comp_req *comp_req;
 297         int comp_level, algo;
 298         uint32_t req_par_flags;
 299         int direction = ICP_QAT_HW_COMPRESSION_DIR_COMPRESS;
 300
 301         if (unlikely(qat_xform == NULL)) {
 302                 QAT_LOG(ERR, "Session was not created for this device");
 303                 return -EINVAL;
 304         }
 305
 306         if (qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 307                 direction = ICP_QAT_HW_COMPRESSION_DIR_DECOMPRESS;
 308                 comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
 309                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 310                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 311                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_NO_CNV,
 312                                 ICP_QAT_FW_COMP_NO_CNV_RECOVERY);
 313
 314         } else {
 315                 if (xform->compress.level == RTE_COMP_LEVEL_PMD_DEFAULT)
 316                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
 317                 else if (xform->compress.level == 1)
 318                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
 319                 else if (xform->compress.level == 2)
 320                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_4;
 321                 else if (xform->compress.level == 3)
 322                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
 323                 else if (xform->compress.level >= 4 &&
 324                          xform->compress.level <= 9)
 325                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_16;
 326                 else {
 327                         QAT_LOG(ERR, "compression level not supported");
 328                         return -EINVAL;
 329                 }
 330                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 331                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 332                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_CNV,
 333                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 334         }
 335
 336         switch (xform->compress.algo) {
 337         case RTE_COMP_ALGO_DEFLATE:
 338                 algo = ICP_QAT_HW_COMPRESSION_ALGO_DEFLATE;
 339                 break;
 340         case RTE_COMP_ALGO_LZS:
 341         default:
 342                 /* RTE_COMP_NULL */
 343                 QAT_LOG(ERR, "compression algorithm not supported");
 344                 return -EINVAL;
 345         }
 346
 347         comp_req = &qat_xform->qat_comp_req_tmpl;
 348
 349         /* Initialize header */
 350         qat_comp_create_req_hdr(&comp_req->comn_hdr,
 351                                         qat_xform->qat_comp_request_type);
 352
 353         comp_req->comn_hdr.serv_specif_flags = ICP_QAT_FW_COMP_FLAGS_BUILD(
 354             ICP_QAT_FW_COMP_STATELESS_SESSION,
 355             ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
 356             ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
 357             ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
 358             ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
 359
 360         comp_req->cd_pars.sl.comp_slice_cfg_word[0] =
 361             ICP_QAT_HW_COMPRESSION_CONFIG_BUILD(
 362                 direction,
 363                 /* In CPM 1.6 only valid mode ! */
 364                 ICP_QAT_HW_COMPRESSION_DELAYED_MATCH_ENABLED, algo,
 365                 /* Translate level to depth */
 366                 comp_level, ICP_QAT_HW_COMPRESSION_FILE_TYPE_0);
 367
 368         comp_req->comp_pars.initial_adler = 1;
 369         comp_req->comp_pars.initial_crc32 = 0;
 370         comp_req->comp_pars.req_par_flags = req_par_flags;
 371
 372
 373         if (qat_xform->qat_comp_request_type ==
 374                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS ||
 375             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 376                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 377                                             ICP_QAT_FW_SLICE_DRAM_WR);
 378                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 379                                             ICP_QAT_FW_SLICE_COMP);
 380         } else if (qat_xform->qat_comp_request_type ==
 381                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS) {
 382
 383                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 384                                 ICP_QAT_FW_SLICE_XLAT);
 385                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 386                                 ICP_QAT_FW_SLICE_COMP);
 387
 388                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 389                                 ICP_QAT_FW_SLICE_DRAM_WR);
 390                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 391                                 ICP_QAT_FW_SLICE_XLAT);
 392
 393                 comp_req->u1.xlt_pars.inter_buff_ptr =
 394                                 interm_buff_mz->phys_addr;
 395         }
 396
 397 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 398         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message template:", comp_req,
 399                     sizeof(struct icp_qat_fw_comp_req));
 400 #endif
 401         return 0;
 402 }
 403
 404 /**
 405  * Create driver private_xform data.
 406  *
 407  * @param dev
 408  *   Compressdev device
 409  * @param xform
 410  *   xform data from application
 411  * @param private_xform
 412  *   ptr where handle of pmd's private_xform data should be stored
 413  * @return
 414  *  - if successful returns 0
 415  *    and valid private_xform handle
 416  *  - <0 in error cases
 417  *  - Returns -EINVAL if input parameters are invalid.
 418  *  - Returns -ENOTSUP if comp device does not support the comp transform.
 419  *  - Returns -ENOMEM if the private_xform could not be allocated.
 420  */
 421 int
 422 qat_comp_private_xform_create(struct rte_compressdev *dev,
 423                               const struct rte_comp_xform *xform,
 424                               void **private_xform)
 425 {
 426         struct qat_comp_dev_private *qat = dev->data->dev_private;
 427
 428         if (unlikely(private_xform == NULL)) {
 429                 QAT_LOG(ERR, "QAT: private_xform parameter is NULL");
 430                 return -EINVAL;
 431         }
 432         if (unlikely(qat->xformpool == NULL)) {
 433                 QAT_LOG(ERR, "QAT device has no private_xform mempool");
 434                 return -ENOMEM;
 435         }
 436         if (rte_mempool_get(qat->xformpool, private_xform)) {
 437                 QAT_LOG(ERR, "Couldn't get object from qat xform mempool");
 438                 return -ENOMEM;
 439         }
 440
 441         struct qat_comp_xform *qat_xform =
 442                         (struct qat_comp_xform *)*private_xform;
 443
 444         if (xform->type == RTE_COMP_COMPRESS) {
 445
 446                 if (xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED ||
 447                   ((xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_DEFAULT)
 448                                    && qat->interm_buff_mz == NULL))
 449                         qat_xform->qat_comp_request_type =
 450                                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS;
 451
 452                 else if ((xform->compress.deflate.huffman ==
 453                                 RTE_COMP_HUFFMAN_DYNAMIC ||
 454                                 xform->compress.deflate.huffman ==
 455                                                 RTE_COMP_HUFFMAN_DEFAULT) &&
 456                                 qat->interm_buff_mz != NULL)
 457
 458                         qat_xform->qat_comp_request_type =
 459                                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS;
 460
 461                 else {
 462                         QAT_LOG(ERR,
 463                                         "IM buffers needed for dynamic deflate. Set size in config file");
 464                         return -EINVAL;
 465                 }
 466
 467                 qat_xform->checksum_type = xform->compress.chksum;
 468
 469         } else {
 470                 qat_xform->qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
 471                 qat_xform->checksum_type = xform->decompress.chksum;
 472         }
 473
 474         if (qat_comp_create_templates(qat_xform, qat->interm_buff_mz, xform)) {
 475                 QAT_LOG(ERR, "QAT: Problem with setting compression");
 476                 return -EINVAL;
 477         }
 478         return 0;
 479 }
 480
 481 /**
 482  * Free driver private_xform data.
 483  *
 484  * @param dev
 485  *   Compressdev device
 486  * @param private_xform
 487  *   handle of pmd's private_xform data
 488  * @return
 489  *  - 0 if successful
 490  *  - <0 in error cases
 491  *  - Returns -EINVAL if input parameters are invalid.
 492  */
 493 int
 494 qat_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
 495                             void *private_xform)
 496 {
 497         struct qat_comp_xform *qat_xform =
 498                         (struct qat_comp_xform *)private_xform;
 499
 500         if (qat_xform) {
 501                 memset(qat_xform, 0, qat_comp_xform_size());
 502                 struct rte_mempool *mp = rte_mempool_from_obj(qat_xform);
 503
 504                 rte_mempool_put(mp, qat_xform);
 505                 return 0;
 506         }
 507         return -EINVAL;
 508 }