drivers/crypto/mvsam/rte_mrvl_pmd_ops.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Marvell International Ltd.
   3  * Copyright(c) 2017 Semihalf.
   4  * All rights reserved.
   5  */
   6
   7 #include <string.h>
   8
   9 #include <rte_common.h>
  10 #include <rte_malloc.h>
  11 #include <rte_cryptodev_pmd.h>
  12
  13 #include "rte_mrvl_pmd_private.h"
  14
  15 /**
  16  * Capabilities list to be used in reporting to DPDK.
  17  */
  18 static const struct rte_cryptodev_capabilities
  19         mrvl_crypto_pmd_capabilities[] = {
  20         {       /* MD5 HMAC */
  21                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  22                 {.sym = {
  23                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  24                         {.auth = {
  25                                 .algo = RTE_CRYPTO_AUTH_MD5_HMAC,
  26                                 .block_size = 64,
  27                                 .key_size = {
  28                                         .min = 1,
  29                                         .max = 64,
  30                                         .increment = 1
  31                                 },
  32                                 .digest_size = {
  33                                         .min = 12,
  34                                         .max = 16,
  35                                         .increment = 4
  36                                 },
  37                         }, }
  38                 }, }
  39         },
  40         {       /* MD5 */
  41                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  42                         {.sym = {
  43                                 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  44                                 {.auth = {
  45                                         .algo = RTE_CRYPTO_AUTH_MD5,
  46                                         .block_size = 64,
  47                                         .key_size = {
  48                                                 .min = 0,
  49                                                 .max = 0,
  50                                                 .increment = 0
  51                                         },
  52                                         .digest_size = {
  53                                                 .min = 12,
  54                                                 .max = 16,
  55                                                 .increment = 4
  56                                         },
  57                                 }, }
  58                         }, }
  59         },
  60         {       /* SHA1 HMAC */
  61                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  62                         {.sym = {
  63                                 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  64                                 {.auth = {
  65                                         .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
  66                                         .block_size = 64,
  67                                         .key_size = {
  68                                                 .min = 1,
  69                                                 .max = 64,
  70                                                 .increment = 1
  71                                         },
  72                                         .digest_size = {
  73                                                 .min = 12,
  74                                                 .max = 20,
  75                                                 .increment = 4
  76                                         },
  77                                 }, }
  78                         }, }
  79         },
  80         {       /* SHA1 */
  81                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
  82                 {.sym = {
  83                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
  84                         {.auth = {
  85                                 .algo = RTE_CRYPTO_AUTH_SHA1,
  86                                 .block_size = 64,
  87                                 .key_size = {
  88                                         .min = 0,
  89                                         .max = 0,
  90                                         .increment = 0
  91                                 },
  92                                 .digest_size = {
  93                                         .min = 12,
  94                                         .max = 20,
  95                                         .increment = 4
  96                                 },
  97                         }, }
  98                 }, }
  99         },
 100         {
 101                 /* SHA224 HMAC */
 102                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 103                 {.sym = {
 104                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 105                         {.auth = {
 106                                 .algo = RTE_CRYPTO_AUTH_SHA224_HMAC,
 107                                 .block_size = 64,
 108                                 .key_size = {
 109                                         .min = 1,
 110                                         .max = 64,
 111                                         .increment = 1
 112                                 },
 113                                 .digest_size = {
 114                                         .min = 28,
 115                                         .max = 28,
 116                                         .increment = 0
 117                                 },
 118                         }, }
 119                 }, }
 120         },
 121         {       /* SHA224 */
 122                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 123                 {.sym = {
 124                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 125                         {.auth = {
 126                                 .algo = RTE_CRYPTO_AUTH_SHA224,
 127                                 .block_size = 64,
 128                                 .key_size = {
 129                                         .min = 0,
 130                                         .max = 0,
 131                                         .increment = 0
 132                                 },
 133                                 .digest_size = {
 134                                         .min = 12,
 135                                         .max = 28,
 136                                         .increment = 4
 137                                 },
 138                         }, }
 139                 }, }
 140         },
 141         {       /* SHA256 HMAC */
 142                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 143                         {.sym = {
 144                                 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 145                                 {.auth = {
 146                                         .algo = RTE_CRYPTO_AUTH_SHA256_HMAC,
 147                                         .block_size = 64,
 148                                         .key_size = {
 149                                                 .min = 1,
 150                                                 .max = 64,
 151                                                 .increment = 1
 152                                         },
 153                                         .digest_size = {
 154                                                 .min = 12,
 155                                                 .max = 32,
 156                                                 .increment = 4
 157                                         },
 158                                 }, }
 159                         }, }
 160         },
 161         {       /* SHA256 */
 162                         .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 163                         {.sym = {
 164                                 .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 165                                 {.auth = {
 166                                         .algo = RTE_CRYPTO_AUTH_SHA256,
 167                                         .block_size = 64,
 168                                         .key_size = {
 169                                                 .min = 0,
 170                                                 .max = 0,
 171                                                 .increment = 0
 172                                         },
 173                                         .digest_size = {
 174                                                 .min = 12,
 175                                                 .max = 32,
 176                                                 .increment = 4
 177                                         },
 178                                 }, }
 179                         }, }
 180                 },
 181         {       /* SHA384 HMAC */
 182                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 183                 {.sym = {
 184                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 185                         {.auth = {
 186                                 .algo = RTE_CRYPTO_AUTH_SHA384_HMAC,
 187                                 .block_size = 128,
 188                                 .key_size = {
 189                                         .min = 1,
 190                                         .max = 128,
 191                                         .increment = 1
 192                                 },
 193                                 .digest_size = {
 194                                         .min = 12,
 195                                         .max = 48,
 196                                         .increment = 4
 197                                 },
 198                         }, }
 199                 }, }
 200         },
 201         {       /* SHA384 */
 202                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 203                 {.sym = {
 204                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 205                         {.auth = {
 206                                 .algo = RTE_CRYPTO_AUTH_SHA384,
 207                                 .block_size = 128,
 208                                 .key_size = {
 209                                         .min = 0,
 210                                         .max = 0,
 211                                         .increment = 0
 212                                 },
 213                                 .digest_size = {
 214                                         .min = 12,
 215                                         .max = 48,
 216                                         .increment = 4
 217                                 },
 218                         }, }
 219                 }, }
 220         },
 221         {       /* SHA512 HMAC */
 222                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 223                 {.sym = {
 224                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 225                         {.auth = {
 226                                 .algo = RTE_CRYPTO_AUTH_SHA512_HMAC,
 227                                 .block_size = 128,
 228                                 .key_size = {
 229                                         .min = 1,
 230                                         .max = 128,
 231                                         .increment = 1
 232                                 },
 233                                 .digest_size = {
 234                                         .min = 12,
 235                                         .max = 48,
 236                                         .increment = 4
 237                                 },
 238                         }, }
 239                 }, }
 240         },
 241         {       /* SHA512  */
 242                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 243                 {.sym = {
 244                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 245                         {.auth = {
 246                                 .algo = RTE_CRYPTO_AUTH_SHA512,
 247                                 .block_size = 128,
 248                                 .key_size = {
 249                                         .min = 0,
 250                                         .max = 0,
 251                                         .increment = 0
 252                                 },
 253                                 .digest_size = {
 254                                         .min = 12,
 255                                         .max = 48,
 256                                         .increment = 0
 257                                 },
 258                         }, }
 259                 }, }
 260         },
 261         {       /* AES CBC */
 262                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 263                         {.sym = {
 264                                 .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 265                                 {.cipher = {
 266                                         .algo = RTE_CRYPTO_CIPHER_AES_CBC,
 267                                         .block_size = 16,
 268                                         .key_size = {
 269                                                 .min = 16,
 270                                                 .max = 32,
 271                                                 .increment = 8
 272                                         },
 273                                         .iv_size = {
 274                                                 .min = 16,
 275                                                 .max = 16,
 276                                                 .increment = 0
 277                                         }
 278                                 }, }
 279                         }, }
 280         },
 281         {       /* AES CTR */
 282                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 283                 {.sym = {
 284                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 285                         {.cipher = {
 286                                 .algo = RTE_CRYPTO_CIPHER_AES_CTR,
 287                                 .block_size = 16,
 288                                 .key_size = {
 289                                         .min = 16,
 290                                         .max = 32,
 291                                         .increment = 8
 292                                 },
 293                                 .iv_size = {
 294                                         .min = 16,
 295                                         .max = 16,
 296                                         .increment = 0
 297                                 }
 298                         }, }
 299                 }, }
 300         },
 301         {       /* AES ECB */
 302                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 303                 {.sym = {
 304                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 305                         {.cipher = {
 306                                 .algo = RTE_CRYPTO_CIPHER_AES_ECB,
 307                                 .block_size = 16,
 308                                 .key_size = {
 309                                         .min = 16,
 310                                         .max = 32,
 311                                         .increment = 8
 312                                 },
 313                                 .iv_size = {
 314                                         .min = 0,
 315                                         .max = 0,
 316                                         .increment = 0
 317                                 }
 318                         }, }
 319                 }, }
 320         },
 321         {       /* AES GCM */
 322                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 323                 {.sym = {
 324                         .xform_type = RTE_CRYPTO_SYM_XFORM_AEAD,
 325                         {.aead = {
 326                                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
 327                                 .block_size = 16,
 328                                 .key_size = {
 329                                         .min = 16,
 330                                         .max = 32,
 331                                         .increment = 8
 332                                 },
 333                                 .digest_size = {
 334                                         .min = 16,
 335                                         .max = 16,
 336                                         .increment = 0
 337                                 },
 338                                 .aad_size = {
 339                                         .min = 8,
 340                                         .max = 12,
 341                                         .increment = 4
 342                                 },
 343                                 .iv_size = {
 344                                         .min = 12,
 345                                         .max = 16,
 346                                         .increment = 4
 347                                 }
 348                         }, }
 349                 }, }
 350         },
 351         {       /* AES GMAC (AUTH) */
 352                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 353                 {.sym = {
 354                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 355                         {.auth = {
 356                                 .algo = RTE_CRYPTO_AUTH_AES_GMAC,
 357                                 .block_size = 16,
 358                                 .key_size = {
 359                                         .min = 16,
 360                                         .max = 32,
 361                                         .increment = 8
 362                                 },
 363                                 .digest_size = {
 364                                         .min = 16,
 365                                         .max = 16,
 366                                         .increment = 0
 367                                 },
 368                                 .iv_size = {
 369                                         .min = 8,
 370                                         .max = 65532,
 371                                         .increment = 4
 372                                 }
 373                         }, }
 374                 }, }
 375         },
 376         {       /* 3DES CBC */
 377                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 378                 {.sym = {
 379                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 380                         {.cipher = {
 381                                 .algo = RTE_CRYPTO_CIPHER_3DES_CBC,
 382                                 .block_size = 8,
 383                                 .key_size = {
 384                                         .min = 24,
 385                                         .max = 24,
 386                                         .increment = 0
 387                                 },
 388                                 .iv_size = {
 389                                         .min = 8,
 390                                         .max = 8,
 391                                         .increment = 0
 392                                 }
 393                         }, }
 394                 }, }
 395         },
 396         {       /* 3DES CTR */
 397                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 398                 {.sym = {
 399                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 400                         {.cipher = {
 401                                 .algo = RTE_CRYPTO_CIPHER_3DES_CTR,
 402                                 .block_size = 8,
 403                                 .key_size = {
 404                                         .min = 24,
 405                                         .max = 24,
 406                                         .increment = 0
 407                                 },
 408                                 .iv_size = {
 409                                         .min = 8,
 410                                         .max = 8,
 411                                         .increment = 0
 412                                 }
 413                         }, }
 414                 }, }
 415         },
 416         {       /* NULL (AUTH) */
 417                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 418                 {.sym = {
 419                         .xform_type = RTE_CRYPTO_SYM_XFORM_AUTH,
 420                         {.auth = {
 421                                 .algo = RTE_CRYPTO_AUTH_NULL,
 422                                 .block_size = 1,
 423                                 .key_size = {
 424                                         .min = 0,
 425                                         .max = 0,
 426                                         .increment = 0
 427                                 },
 428                                 .digest_size = {
 429                                         .min = 0,
 430                                         .max = 0,
 431                                         .increment = 0
 432                                 },
 433                                 .iv_size = {
 434                                         .min = 0,
 435                                         .max = 0,
 436                                         .increment = 0
 437                                 }
 438                         }, },
 439                 }, },
 440         },
 441         {       /* NULL (CIPHER) */
 442                 .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
 443                 {.sym = {
 444                         .xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
 445                         {.cipher = {
 446                                 .algo = RTE_CRYPTO_CIPHER_NULL,
 447                                 .block_size = 1,
 448                                 .key_size = {
 449                                         .min = 0,
 450                                         .max = 0,
 451                                         .increment = 0
 452                                 },
 453                                 .iv_size = {
 454                                         .min = 0,
 455                                         .max = 0,
 456                                         .increment = 0
 457                                 }
 458                         }, },
 459                 }, }
 460         },
 461
 462         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 463 };
 464
 465
 466 /**
 467  * Configure device (PMD ops callback).
 468  *
 469  * @param dev Pointer to the device structure.
 470  * @param config Pointer to configuration structure.
 471  * @returns 0. Always.
 472  */
 473 static int
 474 mrvl_crypto_pmd_config(__rte_unused struct rte_cryptodev *dev,
 475                 __rte_unused struct rte_cryptodev_config *config)
 476 {
 477         return 0;
 478 }
 479
 480 /**
 481  * Start device (PMD ops callback).
 482  *
 483  * @param dev Pointer to the device structure.
 484  * @returns 0. Always.
 485  */
 486 static int
 487 mrvl_crypto_pmd_start(__rte_unused struct rte_cryptodev *dev)
 488 {
 489         return 0;
 490 }
 491
 492 /**
 493  * Stop device (PMD ops callback).
 494  *
 495  * @param dev Pointer to the device structure.
 496  * @returns 0. Always.
 497  */
 498 static void
 499 mrvl_crypto_pmd_stop(__rte_unused struct rte_cryptodev *dev)
 500 {
 501 }
 502
 503 /**
 504  * Get device statistics (PMD ops callback).
 505  *
 506  * @param dev Pointer to the device structure.
 507  * @param stats Pointer to statistics structure [out].
 508  */
 509 static void
 510 mrvl_crypto_pmd_stats_get(struct rte_cryptodev *dev,
 511                 struct rte_cryptodev_stats *stats)
 512 {
 513         int qp_id;
 514
 515         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
 516                 struct mrvl_crypto_qp *qp = dev->data->queue_pairs[qp_id];
 517
 518                 stats->enqueued_count += qp->stats.enqueued_count;
 519                 stats->dequeued_count += qp->stats.dequeued_count;
 520
 521                 stats->enqueue_err_count += qp->stats.enqueue_err_count;
 522                 stats->dequeue_err_count += qp->stats.dequeue_err_count;
 523         }
 524 }
 525
 526 /**
 527  * Reset device statistics (PMD ops callback).
 528  *
 529  * @param dev Pointer to the device structure.
 530  */
 531 static void
 532 mrvl_crypto_pmd_stats_reset(struct rte_cryptodev *dev)
 533 {
 534         int qp_id;
 535
 536         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
 537                 struct mrvl_crypto_qp *qp = dev->data->queue_pairs[qp_id];
 538
 539                 memset(&qp->stats, 0, sizeof(qp->stats));
 540         }
 541 }
 542
 543 /**
 544  * Get device info (PMD ops callback).
 545  *
 546  * @param dev Pointer to the device structure.
 547  * @param dev_info Pointer to the device info structure [out].
 548  */
 549 static void
 550 mrvl_crypto_pmd_info_get(struct rte_cryptodev *dev,
 551                 struct rte_cryptodev_info *dev_info)
 552 {
 553         struct mrvl_crypto_private *internals = dev->data->dev_private;
 554
 555         if (dev_info != NULL) {
 556                 dev_info->driver_id = dev->driver_id;
 557                 dev_info->feature_flags = dev->feature_flags;
 558                 dev_info->capabilities = mrvl_crypto_pmd_capabilities;
 559                 dev_info->max_nb_queue_pairs = internals->max_nb_qpairs;
 560                 dev_info->sym.max_nb_sessions = internals->max_nb_sessions;
 561         }
 562 }
 563
 564 /**
 565  * Release queue pair (PMD ops callback).
 566  *
 567  * @param dev Pointer to the device structure.
 568  * @param qp_id ID of Queue Pair to release.
 569  * @returns 0. Always.
 570  */
 571 static int
 572 mrvl_crypto_pmd_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
 573 {
 574         struct mrvl_crypto_qp *qp =
 575                         (struct mrvl_crypto_qp *)dev->data->queue_pairs[qp_id];
 576
 577         if (dev->data->queue_pairs[qp_id] != NULL) {
 578                 sam_cio_flush(qp->cio);
 579                 sam_cio_deinit(qp->cio);
 580                 rte_free(dev->data->queue_pairs[qp_id]);
 581                 dev->data->queue_pairs[qp_id] = NULL;
 582         }
 583
 584         return 0;
 585 }
 586
 587 /**
 588  * Close device (PMD ops callback).
 589  *
 590  * @param dev Pointer to the device structure.
 591  * @returns 0. Always.
 592  */
 593 static int
 594 mrvl_crypto_pmd_close(struct rte_cryptodev *dev)
 595 {
 596         int qp_id;
 597
 598         for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++)
 599                 mrvl_crypto_pmd_qp_release(dev, qp_id);
 600
 601         return 0;
 602 }
 603
 604 /**
 605  * Setup a queue pair (PMD ops callback).
 606  *
 607  * @param dev Pointer to the device structure.
 608  * @param qp_id ID of the Queue Pair.
 609  * @param qp_conf Queue pair configuration (nb of descriptors).
 610  * @param socket_id NUMA socket to allocate memory on.
 611  * @returns 0 upon success, negative value otherwise.
 612  */
 613 static int
 614 mrvl_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 615                 const struct rte_cryptodev_qp_conf *qp_conf,
 616                 int socket_id, struct rte_mempool *session_pool)
 617 {
 618         struct mrvl_crypto_qp *qp = NULL;
 619         char match[RTE_CRYPTODEV_NAME_MAX_LEN];
 620         unsigned int n;
 621
 622         /* Allocate the queue pair data structure. */
 623         qp = rte_zmalloc_socket("MRVL Crypto PMD Queue Pair", sizeof(*qp),
 624                                         RTE_CACHE_LINE_SIZE, socket_id);
 625         if (qp == NULL)
 626                 return -ENOMEM;
 627
 628         /* Free old qp prior setup if needed. */
 629         if (dev->data->queue_pairs[qp_id] != NULL)
 630                 mrvl_crypto_pmd_qp_release(dev, qp_id);
 631
 632         do { /* Error handling block */
 633
 634                 /*
 635                  * This extra check is necessary due to a bug in
 636                  * crypto library.
 637                  */
 638                 int num = sam_get_num_inst();
 639                 if (num == 0) {
 640                         MRVL_CRYPTO_LOG_ERR("No crypto engines detected.\n");
 641                         return -1;
 642                 }
 643
 644                 /*
 645                  * In case two crypto engines are enabled qps will
 646                  * be evenly spread among them. Even and odd qps will
 647                  * be handled by cio-0 and cio-1 respectively. qp-cio mapping
 648                  * will look as follows:
 649                  *
 650                  * qp:      0        1        2        3
 651                  * cio-x:y: cio-0:0, cio-1:0, cio-0:1, cio-1:1
 652                  *
 653                  * qp:      4        5        6        7
 654                  * cio-x:y: cio-0:2, cio-1:2, cio-0:3, cio-1:3
 655                  *
 656                  * In case just one engine is enabled mapping will look as
 657                  * follows:
 658                  * qp:      0        1        2        3
 659                  * cio-x:y: cio-0:0, cio-0:1, cio-0:2, cio-0:3
 660                  */
 661                 n = snprintf(match, sizeof(match), "cio-%u:%u",
 662                                 qp_id % num, qp_id / num);
 663
 664                 if (n >= sizeof(match))
 665                         break;
 666
 667                 qp->cio_params.match = match;
 668                 qp->cio_params.size = qp_conf->nb_descriptors;
 669
 670                 if (sam_cio_init(&qp->cio_params, &qp->cio) < 0)
 671                         break;
 672
 673                 qp->sess_mp = session_pool;
 674
 675                 memset(&qp->stats, 0, sizeof(qp->stats));
 676                 dev->data->queue_pairs[qp_id] = qp;
 677                 return 0;
 678         } while (0);
 679
 680         rte_free(qp);
 681         return -1;
 682 }
 683
 684 /** Return the number of allocated queue pairs (PMD ops callback).
 685  *
 686  * @param dev Pointer to the device structure.
 687  * @returns Number of allocated queue pairs.
 688  */
 689 static uint32_t
 690 mrvl_crypto_pmd_qp_count(struct rte_cryptodev *dev)
 691 {
 692         return dev->data->nb_queue_pairs;
 693 }
 694
 695 /** Returns the size of the session structure (PMD ops callback).
 696  *
 697  * @param dev Pointer to the device structure [Unused].
 698  * @returns Size of Marvell crypto session.
 699  */
 700 static unsigned
 701 mrvl_crypto_pmd_sym_session_get_size(__rte_unused struct rte_cryptodev *dev)
 702 {
 703         return sizeof(struct mrvl_crypto_session);
 704 }
 705
 706 /** Configure the session from a crypto xform chain (PMD ops callback).
 707  *
 708  * @param dev Pointer to the device structure.
 709  * @param xform Pointer to the crytpo configuration structure.
 710  * @param sess Pointer to the empty session structure.
 711  * @returns 0 upon success, negative value otherwise.
 712  */
 713 static int
 714 mrvl_crypto_pmd_sym_session_configure(__rte_unused struct rte_cryptodev *dev,
 715                 struct rte_crypto_sym_xform *xform,
 716                 struct rte_cryptodev_sym_session *sess,
 717                 struct rte_mempool *mp)
 718 {
 719         struct mrvl_crypto_session *mrvl_sess;
 720         void *sess_private_data;
 721         int ret;
 722
 723         if (sess == NULL) {
 724                 MRVL_CRYPTO_LOG_ERR("Invalid session struct.");
 725                 return -EINVAL;
 726         }
 727
 728         if (rte_mempool_get(mp, &sess_private_data)) {
 729                 CDEV_LOG_ERR("Couldn't get object from session mempool.");
 730                 return -ENOMEM;
 731         }
 732
 733         ret = mrvl_crypto_set_session_parameters(sess_private_data, xform);
 734         if (ret != 0) {
 735                 MRVL_CRYPTO_LOG_ERR("Failed to configure session parameters.");
 736
 737                 /* Return session to mempool */
 738                 rte_mempool_put(mp, sess_private_data);
 739                 return ret;
 740         }
 741
 742         set_sym_session_private_data(sess, dev->driver_id, sess_private_data);
 743
 744         mrvl_sess = (struct mrvl_crypto_session *)sess_private_data;
 745         if (sam_session_create(&mrvl_sess->sam_sess_params,
 746                                 &mrvl_sess->sam_sess) < 0) {
 747                 MRVL_CRYPTO_LOG_DBG("Failed to create session!");
 748                 return -EIO;
 749         }
 750
 751         return 0;
 752 }
 753
 754 /**
 755  * Clear the memory of session so it doesn't leave key material behind.
 756  *
 757  * @param dev Pointer to the device structure.
 758  * @returns 0. Always.
 759  */
 760 static void
 761 mrvl_crypto_pmd_sym_session_clear(struct rte_cryptodev *dev,
 762                 struct rte_cryptodev_sym_session *sess)
 763 {
 764
 765         uint8_t index = dev->driver_id;
 766         void *sess_priv = get_sym_session_private_data(sess, index);
 767
 768         /* Zero out the whole structure */
 769         if (sess_priv) {
 770                 struct mrvl_crypto_session *mrvl_sess =
 771                         (struct mrvl_crypto_session *)sess_priv;
 772
 773                 if (mrvl_sess->sam_sess &&
 774                     sam_session_destroy(mrvl_sess->sam_sess) < 0) {
 775                         MRVL_CRYPTO_LOG_INFO("Error while destroying session!");
 776                 }
 777
 778                 memset(sess, 0, sizeof(struct mrvl_crypto_session));
 779                 struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
 780                 set_sym_session_private_data(sess, index, NULL);
 781                 rte_mempool_put(sess_mp, sess_priv);
 782         }
 783 }
 784
 785 /**
 786  * PMD handlers for crypto ops.
 787  */
 788 static struct rte_cryptodev_ops mrvl_crypto_pmd_ops = {
 789                 .dev_configure          = mrvl_crypto_pmd_config,
 790                 .dev_start              = mrvl_crypto_pmd_start,
 791                 .dev_stop               = mrvl_crypto_pmd_stop,
 792                 .dev_close              = mrvl_crypto_pmd_close,
 793
 794                 .dev_infos_get          = mrvl_crypto_pmd_info_get,
 795
 796                 .stats_get              = mrvl_crypto_pmd_stats_get,
 797                 .stats_reset            = mrvl_crypto_pmd_stats_reset,
 798
 799                 .queue_pair_setup       = mrvl_crypto_pmd_qp_setup,
 800                 .queue_pair_release     = mrvl_crypto_pmd_qp_release,
 801                 .queue_pair_count       = mrvl_crypto_pmd_qp_count,
 802
 803                 .sym_session_get_size   = mrvl_crypto_pmd_sym_session_get_size,
 804                 .sym_session_configure  = mrvl_crypto_pmd_sym_session_configure,
 805                 .sym_session_clear      = mrvl_crypto_pmd_sym_session_clear
 806 };
 807
 808 struct rte_cryptodev_ops *rte_mrvl_crypto_pmd_ops = &mrvl_crypto_pmd_ops;