lib/librte_cryptodev/rte_cryptodev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2015-2017 Intel Corporation. All rights reserved.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Intel Corporation nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/types.h>
  34 #include <sys/queue.h>
  35 #include <ctype.h>
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <stdarg.h>
  40 #include <errno.h>
  41 #include <stdint.h>
  42 #include <inttypes.h>
  43 #include <netinet/in.h>
  44
  45 #include <rte_byteorder.h>
  46 #include <rte_log.h>
  47 #include <rte_debug.h>
  48 #include <rte_dev.h>
  49 #include <rte_interrupts.h>
  50 #include <rte_memory.h>
  51 #include <rte_memcpy.h>
  52 #include <rte_memzone.h>
  53 #include <rte_launch.h>
  54 #include <rte_tailq.h>
  55 #include <rte_eal.h>
  56 #include <rte_per_lcore.h>
  57 #include <rte_lcore.h>
  58 #include <rte_atomic.h>
  59 #include <rte_branch_prediction.h>
  60 #include <rte_common.h>
  61 #include <rte_mempool.h>
  62 #include <rte_malloc.h>
  63 #include <rte_mbuf.h>
  64 #include <rte_errno.h>
  65 #include <rte_spinlock.h>
  66 #include <rte_string_fns.h>
  67
  68 #include "rte_crypto.h"
  69 #include "rte_cryptodev.h"
  70 #include "rte_cryptodev_pmd.h"
  71
  72 static uint8_t nb_drivers;
  73
  74 struct rte_cryptodev rte_crypto_devices[RTE_CRYPTO_MAX_DEVS];
  75
  76 struct rte_cryptodev *rte_cryptodevs = &rte_crypto_devices[0];
  77
  78 static struct rte_cryptodev_global cryptodev_globals = {
  79                 .devs                   = &rte_crypto_devices[0],
  80                 .data                   = { NULL },
  81                 .nb_devs                = 0,
  82                 .max_devs               = RTE_CRYPTO_MAX_DEVS
  83 };
  84
  85 struct rte_cryptodev_global *rte_cryptodev_globals = &cryptodev_globals;
  86
  87 /* spinlock for crypto device callbacks */
  88 static rte_spinlock_t rte_cryptodev_cb_lock = RTE_SPINLOCK_INITIALIZER;
  89
  90
  91 /**
  92  * The user application callback description.
  93  *
  94  * It contains callback address to be registered by user application,
  95  * the pointer to the parameters for callback, and the event type.
  96  */
  97 struct rte_cryptodev_callback {
  98         TAILQ_ENTRY(rte_cryptodev_callback) next; /**< Callbacks list */
  99         rte_cryptodev_cb_fn cb_fn;              /**< Callback address */
 100         void *cb_arg;                           /**< Parameter for callback */
 101         enum rte_cryptodev_event_type event;    /**< Interrupt event type */
 102         uint32_t active;                        /**< Callback is executing */
 103 };
 104
 105 /**
 106  * The crypto cipher algorithm strings identifiers.
 107  * It could be used in application command line.
 108  */
 109 const char *
 110 rte_crypto_cipher_algorithm_strings[] = {
 111         [RTE_CRYPTO_CIPHER_3DES_CBC]    = "3des-cbc",
 112         [RTE_CRYPTO_CIPHER_3DES_ECB]    = "3des-ecb",
 113         [RTE_CRYPTO_CIPHER_3DES_CTR]    = "3des-ctr",
 114
 115         [RTE_CRYPTO_CIPHER_AES_CBC]     = "aes-cbc",
 116         [RTE_CRYPTO_CIPHER_AES_CTR]     = "aes-ctr",
 117         [RTE_CRYPTO_CIPHER_AES_DOCSISBPI]       = "aes-docsisbpi",
 118         [RTE_CRYPTO_CIPHER_AES_ECB]     = "aes-ecb",
 119         [RTE_CRYPTO_CIPHER_AES_F8]      = "aes-f8",
 120         [RTE_CRYPTO_CIPHER_AES_XTS]     = "aes-xts",
 121
 122         [RTE_CRYPTO_CIPHER_ARC4]        = "arc4",
 123
 124         [RTE_CRYPTO_CIPHER_DES_CBC]     = "des-cbc",
 125         [RTE_CRYPTO_CIPHER_DES_DOCSISBPI]       = "des-docsisbpi",
 126
 127         [RTE_CRYPTO_CIPHER_NULL]        = "null",
 128
 129         [RTE_CRYPTO_CIPHER_KASUMI_F8]   = "kasumi-f8",
 130         [RTE_CRYPTO_CIPHER_SNOW3G_UEA2] = "snow3g-uea2",
 131         [RTE_CRYPTO_CIPHER_ZUC_EEA3]    = "zuc-eea3"
 132 };
 133
 134 /**
 135  * The crypto cipher operation strings identifiers.
 136  * It could be used in application command line.
 137  */
 138 const char *
 139 rte_crypto_cipher_operation_strings[] = {
 140                 [RTE_CRYPTO_CIPHER_OP_ENCRYPT]  = "encrypt",
 141                 [RTE_CRYPTO_CIPHER_OP_DECRYPT]  = "decrypt"
 142 };
 143
 144 /**
 145  * The crypto auth algorithm strings identifiers.
 146  * It could be used in application command line.
 147  */
 148 const char *
 149 rte_crypto_auth_algorithm_strings[] = {
 150         [RTE_CRYPTO_AUTH_AES_CBC_MAC]   = "aes-cbc-mac",
 151         [RTE_CRYPTO_AUTH_AES_CMAC]      = "aes-cmac",
 152         [RTE_CRYPTO_AUTH_AES_GMAC]      = "aes-gmac",
 153         [RTE_CRYPTO_AUTH_AES_XCBC_MAC]  = "aes-xcbc-mac",
 154
 155         [RTE_CRYPTO_AUTH_MD5]           = "md5",
 156         [RTE_CRYPTO_AUTH_MD5_HMAC]      = "md5-hmac",
 157
 158         [RTE_CRYPTO_AUTH_NULL]          = "null",
 159
 160         [RTE_CRYPTO_AUTH_SHA1]          = "sha1",
 161         [RTE_CRYPTO_AUTH_SHA1_HMAC]     = "sha1-hmac",
 162
 163         [RTE_CRYPTO_AUTH_SHA224]        = "sha2-224",
 164         [RTE_CRYPTO_AUTH_SHA224_HMAC]   = "sha2-224-hmac",
 165         [RTE_CRYPTO_AUTH_SHA256]        = "sha2-256",
 166         [RTE_CRYPTO_AUTH_SHA256_HMAC]   = "sha2-256-hmac",
 167         [RTE_CRYPTO_AUTH_SHA384]        = "sha2-384",
 168         [RTE_CRYPTO_AUTH_SHA384_HMAC]   = "sha2-384-hmac",
 169         [RTE_CRYPTO_AUTH_SHA512]        = "sha2-512",
 170         [RTE_CRYPTO_AUTH_SHA512_HMAC]   = "sha2-512-hmac",
 171
 172         [RTE_CRYPTO_AUTH_KASUMI_F9]     = "kasumi-f9",
 173         [RTE_CRYPTO_AUTH_SNOW3G_UIA2]   = "snow3g-uia2",
 174         [RTE_CRYPTO_AUTH_ZUC_EIA3]      = "zuc-eia3"
 175 };
 176
 177 /**
 178  * The crypto AEAD algorithm strings identifiers.
 179  * It could be used in application command line.
 180  */
 181 const char *
 182 rte_crypto_aead_algorithm_strings[] = {
 183         [RTE_CRYPTO_AEAD_AES_CCM]       = "aes-ccm",
 184         [RTE_CRYPTO_AEAD_AES_GCM]       = "aes-gcm",
 185 };
 186
 187 /**
 188  * The crypto AEAD operation strings identifiers.
 189  * It could be used in application command line.
 190  */
 191 const char *
 192 rte_crypto_aead_operation_strings[] = {
 193         [RTE_CRYPTO_AEAD_OP_ENCRYPT]    = "encrypt",
 194         [RTE_CRYPTO_AEAD_OP_DECRYPT]    = "decrypt"
 195 };
 196
 197 int
 198 rte_cryptodev_get_cipher_algo_enum(enum rte_crypto_cipher_algorithm *algo_enum,
 199                 const char *algo_string)
 200 {
 201         unsigned int i;
 202
 203         for (i = 1; i < RTE_DIM(rte_crypto_cipher_algorithm_strings); i++) {
 204                 if (strcmp(algo_string, rte_crypto_cipher_algorithm_strings[i]) == 0) {
 205                         *algo_enum = (enum rte_crypto_cipher_algorithm) i;
 206                         return 0;
 207                 }
 208         }
 209
 210         /* Invalid string */
 211         return -1;
 212 }
 213
 214 int
 215 rte_cryptodev_get_auth_algo_enum(enum rte_crypto_auth_algorithm *algo_enum,
 216                 const char *algo_string)
 217 {
 218         unsigned int i;
 219
 220         for (i = 1; i < RTE_DIM(rte_crypto_auth_algorithm_strings); i++) {
 221                 if (strcmp(algo_string, rte_crypto_auth_algorithm_strings[i]) == 0) {
 222                         *algo_enum = (enum rte_crypto_auth_algorithm) i;
 223                         return 0;
 224                 }
 225         }
 226
 227         /* Invalid string */
 228         return -1;
 229 }
 230
 231 int
 232 rte_cryptodev_get_aead_algo_enum(enum rte_crypto_aead_algorithm *algo_enum,
 233                 const char *algo_string)
 234 {
 235         unsigned int i;
 236
 237         for (i = 1; i < RTE_DIM(rte_crypto_aead_algorithm_strings); i++) {
 238                 if (strcmp(algo_string, rte_crypto_aead_algorithm_strings[i]) == 0) {
 239                         *algo_enum = (enum rte_crypto_aead_algorithm) i;
 240                         return 0;
 241                 }
 242         }
 243
 244         /* Invalid string */
 245         return -1;
 246 }
 247
 248 /**
 249  * The crypto auth operation strings identifiers.
 250  * It could be used in application command line.
 251  */
 252 const char *
 253 rte_crypto_auth_operation_strings[] = {
 254                 [RTE_CRYPTO_AUTH_OP_VERIFY]     = "verify",
 255                 [RTE_CRYPTO_AUTH_OP_GENERATE]   = "generate"
 256 };
 257
 258 const struct rte_cryptodev_symmetric_capability *
 259 rte_cryptodev_sym_capability_get(uint8_t dev_id,
 260                 const struct rte_cryptodev_sym_capability_idx *idx)
 261 {
 262         const struct rte_cryptodev_capabilities *capability;
 263         struct rte_cryptodev_info dev_info;
 264         int i = 0;
 265
 266         rte_cryptodev_info_get(dev_id, &dev_info);
 267
 268         while ((capability = &dev_info.capabilities[i++])->op !=
 269                         RTE_CRYPTO_OP_TYPE_UNDEFINED) {
 270                 if (capability->op != RTE_CRYPTO_OP_TYPE_SYMMETRIC)
 271                         continue;
 272
 273                 if (capability->sym.xform_type != idx->type)
 274                         continue;
 275
 276                 if (idx->type == RTE_CRYPTO_SYM_XFORM_AUTH &&
 277                         capability->sym.auth.algo == idx->algo.auth)
 278                         return &capability->sym;
 279
 280                 if (idx->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
 281                         capability->sym.cipher.algo == idx->algo.cipher)
 282                         return &capability->sym;
 283
 284                 if (idx->type == RTE_CRYPTO_SYM_XFORM_AEAD &&
 285                                 capability->sym.aead.algo == idx->algo.aead)
 286                         return &capability->sym;
 287         }
 288
 289         return NULL;
 290
 291 }
 292
 293 #define param_range_check(x, y) \
 294         (((x < y.min) || (x > y.max)) || \
 295         (y.increment != 0 && (x % y.increment) != 0))
 296
 297 int
 298 rte_cryptodev_sym_capability_check_cipher(
 299                 const struct rte_cryptodev_symmetric_capability *capability,
 300                 uint16_t key_size, uint16_t iv_size)
 301 {
 302         if (param_range_check(key_size, capability->cipher.key_size))
 303                 return -1;
 304
 305         if (param_range_check(iv_size, capability->cipher.iv_size))
 306                 return -1;
 307
 308         return 0;
 309 }
 310
 311 int
 312 rte_cryptodev_sym_capability_check_auth(
 313                 const struct rte_cryptodev_symmetric_capability *capability,
 314                 uint16_t key_size, uint16_t digest_size, uint16_t aad_size,
 315                 uint16_t iv_size)
 316 {
 317         if (param_range_check(key_size, capability->auth.key_size))
 318                 return -1;
 319
 320         if (param_range_check(digest_size, capability->auth.digest_size))
 321                 return -1;
 322
 323         if (param_range_check(aad_size, capability->auth.aad_size))
 324                 return -1;
 325
 326         if (param_range_check(iv_size, capability->auth.iv_size))
 327                 return -1;
 328
 329         return 0;
 330 }
 331
 332 int
 333 rte_cryptodev_sym_capability_check_aead(
 334                 const struct rte_cryptodev_symmetric_capability *capability,
 335                 uint16_t key_size, uint16_t digest_size, uint16_t aad_size,
 336                 uint16_t iv_size)
 337 {
 338         if (param_range_check(key_size, capability->aead.key_size))
 339                 return -1;
 340
 341         if (param_range_check(digest_size, capability->aead.digest_size))
 342                 return -1;
 343
 344         if (param_range_check(aad_size, capability->aead.aad_size))
 345                 return -1;
 346
 347         if (param_range_check(iv_size, capability->aead.iv_size))
 348                 return -1;
 349
 350         return 0;
 351 }
 352
 353 const char *
 354 rte_cryptodev_get_feature_name(uint64_t flag)
 355 {
 356         switch (flag) {
 357         case RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO:
 358                 return "SYMMETRIC_CRYPTO";
 359         case RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO:
 360                 return "ASYMMETRIC_CRYPTO";
 361         case RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING:
 362                 return "SYM_OPERATION_CHAINING";
 363         case RTE_CRYPTODEV_FF_CPU_SSE:
 364                 return "CPU_SSE";
 365         case RTE_CRYPTODEV_FF_CPU_AVX:
 366                 return "CPU_AVX";
 367         case RTE_CRYPTODEV_FF_CPU_AVX2:
 368                 return "CPU_AVX2";
 369         case RTE_CRYPTODEV_FF_CPU_AESNI:
 370                 return "CPU_AESNI";
 371         case RTE_CRYPTODEV_FF_HW_ACCELERATED:
 372                 return "HW_ACCELERATED";
 373         case RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER:
 374                 return "MBUF_SCATTER_GATHER";
 375         case RTE_CRYPTODEV_FF_CPU_NEON:
 376                 return "CPU_NEON";
 377         case RTE_CRYPTODEV_FF_CPU_ARM_CE:
 378                 return "CPU_ARM_CE";
 379         default:
 380                 return NULL;
 381         }
 382 }
 383
 384 int
 385 rte_cryptodev_create_vdev(const char *name, const char *args)
 386 {
 387         return rte_vdev_init(name, args);
 388 }
 389
 390 struct rte_cryptodev *
 391 rte_cryptodev_pmd_get_dev(uint8_t dev_id)
 392 {
 393         return &rte_cryptodev_globals->devs[dev_id];
 394 }
 395
 396 struct rte_cryptodev *
 397 rte_cryptodev_pmd_get_named_dev(const char *name)
 398 {
 399         struct rte_cryptodev *dev;
 400         unsigned int i;
 401
 402         if (name == NULL)
 403                 return NULL;
 404
 405         for (i = 0; i < rte_cryptodev_globals->max_devs; i++) {
 406                 dev = &rte_cryptodev_globals->devs[i];
 407
 408                 if ((dev->attached == RTE_CRYPTODEV_ATTACHED) &&
 409                                 (strcmp(dev->data->name, name) == 0))
 410                         return dev;
 411         }
 412
 413         return NULL;
 414 }
 415
 416 unsigned int
 417 rte_cryptodev_pmd_is_valid_dev(uint8_t dev_id)
 418 {
 419         struct rte_cryptodev *dev = NULL;
 420
 421         if (dev_id >= rte_cryptodev_globals->nb_devs)
 422                 return 0;
 423
 424         dev = rte_cryptodev_pmd_get_dev(dev_id);
 425         if (dev->attached != RTE_CRYPTODEV_ATTACHED)
 426                 return 0;
 427         else
 428                 return 1;
 429 }
 430
 431
 432 int
 433 rte_cryptodev_get_dev_id(const char *name)
 434 {
 435         unsigned i;
 436
 437         if (name == NULL)
 438                 return -1;
 439
 440         for (i = 0; i < rte_cryptodev_globals->nb_devs; i++)
 441                 if ((strcmp(rte_cryptodev_globals->devs[i].data->name, name)
 442                                 == 0) &&
 443                                 (rte_cryptodev_globals->devs[i].attached ==
 444                                                 RTE_CRYPTODEV_ATTACHED))
 445                         return i;
 446
 447         return -1;
 448 }
 449
 450 uint8_t
 451 rte_cryptodev_count(void)
 452 {
 453         return rte_cryptodev_globals->nb_devs;
 454 }
 455
 456 uint8_t
 457 rte_cryptodev_device_count_by_driver(uint8_t driver_id)
 458 {
 459         uint8_t i, dev_count = 0;
 460
 461         for (i = 0; i < rte_cryptodev_globals->max_devs; i++)
 462                 if (rte_cryptodev_globals->devs[i].driver_id == driver_id &&
 463                         rte_cryptodev_globals->devs[i].attached ==
 464                                         RTE_CRYPTODEV_ATTACHED)
 465                         dev_count++;
 466
 467         return dev_count;
 468 }
 469
 470 uint8_t
 471 rte_cryptodev_devices_get(const char *driver_name, uint8_t *devices,
 472         uint8_t nb_devices)
 473 {
 474         uint8_t i, count = 0;
 475         struct rte_cryptodev *devs = rte_cryptodev_globals->devs;
 476         uint8_t max_devs = rte_cryptodev_globals->max_devs;
 477
 478         for (i = 0; i < max_devs && count < nb_devices; i++) {
 479
 480                 if (devs[i].attached == RTE_CRYPTODEV_ATTACHED) {
 481                         int cmp;
 482
 483                         cmp = strncmp(devs[i].device->driver->name,
 484                                         driver_name,
 485                                         strlen(driver_name));
 486
 487                         if (cmp == 0)
 488                                 devices[count++] = devs[i].data->dev_id;
 489                 }
 490         }
 491
 492         return count;
 493 }
 494
 495 int
 496 rte_cryptodev_socket_id(uint8_t dev_id)
 497 {
 498         struct rte_cryptodev *dev;
 499
 500         if (!rte_cryptodev_pmd_is_valid_dev(dev_id))
 501                 return -1;
 502
 503         dev = rte_cryptodev_pmd_get_dev(dev_id);
 504
 505         return dev->data->socket_id;
 506 }
 507
 508 static inline int
 509 rte_cryptodev_data_alloc(uint8_t dev_id, struct rte_cryptodev_data **data,
 510                 int socket_id)
 511 {
 512         char mz_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 513         const struct rte_memzone *mz;
 514         int n;
 515
 516         /* generate memzone name */
 517         n = snprintf(mz_name, sizeof(mz_name), "rte_cryptodev_data_%u", dev_id);
 518         if (n >= (int)sizeof(mz_name))
 519                 return -EINVAL;
 520
 521         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 522                 mz = rte_memzone_reserve(mz_name,
 523                                 sizeof(struct rte_cryptodev_data),
 524                                 socket_id, 0);
 525         } else
 526                 mz = rte_memzone_lookup(mz_name);
 527
 528         if (mz == NULL)
 529                 return -ENOMEM;
 530
 531         *data = mz->addr;
 532         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 533                 memset(*data, 0, sizeof(struct rte_cryptodev_data));
 534
 535         return 0;
 536 }
 537
 538 static uint8_t
 539 rte_cryptodev_find_free_device_index(void)
 540 {
 541         uint8_t dev_id;
 542
 543         for (dev_id = 0; dev_id < RTE_CRYPTO_MAX_DEVS; dev_id++) {
 544                 if (rte_crypto_devices[dev_id].attached ==
 545                                 RTE_CRYPTODEV_DETACHED)
 546                         return dev_id;
 547         }
 548         return RTE_CRYPTO_MAX_DEVS;
 549 }
 550
 551 struct rte_cryptodev *
 552 rte_cryptodev_pmd_allocate(const char *name, int socket_id)
 553 {
 554         struct rte_cryptodev *cryptodev;
 555         uint8_t dev_id;
 556
 557         if (rte_cryptodev_pmd_get_named_dev(name) != NULL) {
 558                 CDEV_LOG_ERR("Crypto device with name %s already "
 559                                 "allocated!", name);
 560                 return NULL;
 561         }
 562
 563         dev_id = rte_cryptodev_find_free_device_index();
 564         if (dev_id == RTE_CRYPTO_MAX_DEVS) {
 565                 CDEV_LOG_ERR("Reached maximum number of crypto devices");
 566                 return NULL;
 567         }
 568
 569         cryptodev = rte_cryptodev_pmd_get_dev(dev_id);
 570
 571         if (cryptodev->data == NULL) {
 572                 struct rte_cryptodev_data *cryptodev_data =
 573                                 cryptodev_globals.data[dev_id];
 574
 575                 int retval = rte_cryptodev_data_alloc(dev_id, &cryptodev_data,
 576                                 socket_id);
 577
 578                 if (retval < 0 || cryptodev_data == NULL)
 579                         return NULL;
 580
 581                 cryptodev->data = cryptodev_data;
 582
 583                 snprintf(cryptodev->data->name, RTE_CRYPTODEV_NAME_MAX_LEN,
 584                                 "%s", name);
 585
 586                 cryptodev->data->dev_id = dev_id;
 587                 cryptodev->data->socket_id = socket_id;
 588                 cryptodev->data->dev_started = 0;
 589
 590                 cryptodev->attached = RTE_CRYPTODEV_ATTACHED;
 591
 592                 cryptodev_globals.nb_devs++;
 593         }
 594
 595         return cryptodev;
 596 }
 597
 598 int
 599 rte_cryptodev_pmd_release_device(struct rte_cryptodev *cryptodev)
 600 {
 601         int ret;
 602
 603         if (cryptodev == NULL)
 604                 return -EINVAL;
 605
 606         /* Close device only if device operations have been set */
 607         if (cryptodev->dev_ops) {
 608                 ret = rte_cryptodev_close(cryptodev->data->dev_id);
 609                 if (ret < 0)
 610                         return ret;
 611         }
 612
 613         cryptodev->attached = RTE_CRYPTODEV_DETACHED;
 614         cryptodev_globals.nb_devs--;
 615         return 0;
 616 }
 617
 618 uint16_t
 619 rte_cryptodev_queue_pair_count(uint8_t dev_id)
 620 {
 621         struct rte_cryptodev *dev;
 622
 623         dev = &rte_crypto_devices[dev_id];
 624         return dev->data->nb_queue_pairs;
 625 }
 626
 627 static int
 628 rte_cryptodev_queue_pairs_config(struct rte_cryptodev *dev, uint16_t nb_qpairs,
 629                 int socket_id)
 630 {
 631         struct rte_cryptodev_info dev_info;
 632         void **qp;
 633         unsigned i;
 634
 635         if ((dev == NULL) || (nb_qpairs < 1)) {
 636                 CDEV_LOG_ERR("invalid param: dev %p, nb_queues %u",
 637                                                         dev, nb_qpairs);
 638                 return -EINVAL;
 639         }
 640
 641         CDEV_LOG_DEBUG("Setup %d queues pairs on device %u",
 642                         nb_qpairs, dev->data->dev_id);
 643
 644         memset(&dev_info, 0, sizeof(struct rte_cryptodev_info));
 645
 646         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
 647         (*dev->dev_ops->dev_infos_get)(dev, &dev_info);
 648
 649         if (nb_qpairs > (dev_info.max_nb_queue_pairs)) {
 650                 CDEV_LOG_ERR("Invalid num queue_pairs (%u) for dev %u",
 651                                 nb_qpairs, dev->data->dev_id);
 652             return -EINVAL;
 653         }
 654
 655         if (dev->data->queue_pairs == NULL) { /* first time configuration */
 656                 dev->data->queue_pairs = rte_zmalloc_socket(
 657                                 "cryptodev->queue_pairs",
 658                                 sizeof(dev->data->queue_pairs[0]) * nb_qpairs,
 659                                 RTE_CACHE_LINE_SIZE, socket_id);
 660
 661                 if (dev->data->queue_pairs == NULL) {
 662                         dev->data->nb_queue_pairs = 0;
 663                         CDEV_LOG_ERR("failed to get memory for qp meta data, "
 664                                                         "nb_queues %u",
 665                                                         nb_qpairs);
 666                         return -(ENOMEM);
 667                 }
 668         } else { /* re-configure */
 669                 int ret;
 670                 uint16_t old_nb_queues = dev->data->nb_queue_pairs;
 671
 672                 qp = dev->data->queue_pairs;
 673
 674                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_pair_release,
 675                                 -ENOTSUP);
 676
 677                 for (i = nb_qpairs; i < old_nb_queues; i++) {
 678                         ret = (*dev->dev_ops->queue_pair_release)(dev, i);
 679                         if (ret < 0)
 680                                 return ret;
 681                 }
 682
 683                 qp = rte_realloc(qp, sizeof(qp[0]) * nb_qpairs,
 684                                 RTE_CACHE_LINE_SIZE);
 685                 if (qp == NULL) {
 686                         CDEV_LOG_ERR("failed to realloc qp meta data,"
 687                                                 " nb_queues %u", nb_qpairs);
 688                         return -(ENOMEM);
 689                 }
 690
 691                 if (nb_qpairs > old_nb_queues) {
 692                         uint16_t new_qs = nb_qpairs - old_nb_queues;
 693
 694                         memset(qp + old_nb_queues, 0,
 695                                 sizeof(qp[0]) * new_qs);
 696                 }
 697
 698                 dev->data->queue_pairs = qp;
 699
 700         }
 701         dev->data->nb_queue_pairs = nb_qpairs;
 702         return 0;
 703 }
 704
 705 int
 706 rte_cryptodev_queue_pair_start(uint8_t dev_id, uint16_t queue_pair_id)
 707 {
 708         struct rte_cryptodev *dev;
 709
 710         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 711                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 712                 return -EINVAL;
 713         }
 714
 715         dev = &rte_crypto_devices[dev_id];
 716         if (queue_pair_id >= dev->data->nb_queue_pairs) {
 717                 CDEV_LOG_ERR("Invalid queue_pair_id=%d", queue_pair_id);
 718                 return -EINVAL;
 719         }
 720
 721         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_pair_start, -ENOTSUP);
 722
 723         return dev->dev_ops->queue_pair_start(dev, queue_pair_id);
 724
 725 }
 726
 727 int
 728 rte_cryptodev_queue_pair_stop(uint8_t dev_id, uint16_t queue_pair_id)
 729 {
 730         struct rte_cryptodev *dev;
 731
 732         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 733                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 734                 return -EINVAL;
 735         }
 736
 737         dev = &rte_crypto_devices[dev_id];
 738         if (queue_pair_id >= dev->data->nb_queue_pairs) {
 739                 CDEV_LOG_ERR("Invalid queue_pair_id=%d", queue_pair_id);
 740                 return -EINVAL;
 741         }
 742
 743         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_pair_stop, -ENOTSUP);
 744
 745         return dev->dev_ops->queue_pair_stop(dev, queue_pair_id);
 746
 747 }
 748
 749 int
 750 rte_cryptodev_configure(uint8_t dev_id, struct rte_cryptodev_config *config)
 751 {
 752         struct rte_cryptodev *dev;
 753         int diag;
 754
 755         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 756                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 757                 return -EINVAL;
 758         }
 759
 760         dev = &rte_crypto_devices[dev_id];
 761
 762         if (dev->data->dev_started) {
 763                 CDEV_LOG_ERR(
 764                     "device %d must be stopped to allow configuration", dev_id);
 765                 return -EBUSY;
 766         }
 767
 768         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
 769
 770         /* Setup new number of queue pairs and reconfigure device. */
 771         diag = rte_cryptodev_queue_pairs_config(dev, config->nb_queue_pairs,
 772                         config->socket_id);
 773         if (diag != 0) {
 774                 CDEV_LOG_ERR("dev%d rte_crypto_dev_queue_pairs_config = %d",
 775                                 dev_id, diag);
 776                 return diag;
 777         }
 778
 779         return (*dev->dev_ops->dev_configure)(dev, config);
 780 }
 781
 782
 783 int
 784 rte_cryptodev_start(uint8_t dev_id)
 785 {
 786         struct rte_cryptodev *dev;
 787         int diag;
 788
 789         CDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
 790
 791         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 792                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 793                 return -EINVAL;
 794         }
 795
 796         dev = &rte_crypto_devices[dev_id];
 797
 798         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
 799
 800         if (dev->data->dev_started != 0) {
 801                 CDEV_LOG_ERR("Device with dev_id=%" PRIu8 " already started",
 802                         dev_id);
 803                 return 0;
 804         }
 805
 806         diag = (*dev->dev_ops->dev_start)(dev);
 807         if (diag == 0)
 808                 dev->data->dev_started = 1;
 809         else
 810                 return diag;
 811
 812         return 0;
 813 }
 814
 815 void
 816 rte_cryptodev_stop(uint8_t dev_id)
 817 {
 818         struct rte_cryptodev *dev;
 819
 820         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 821                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 822                 return;
 823         }
 824
 825         dev = &rte_crypto_devices[dev_id];
 826
 827         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
 828
 829         if (dev->data->dev_started == 0) {
 830                 CDEV_LOG_ERR("Device with dev_id=%" PRIu8 " already stopped",
 831                         dev_id);
 832                 return;
 833         }
 834
 835         (*dev->dev_ops->dev_stop)(dev);
 836         dev->data->dev_started = 0;
 837 }
 838
 839 int
 840 rte_cryptodev_close(uint8_t dev_id)
 841 {
 842         struct rte_cryptodev *dev;
 843         int retval;
 844
 845         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 846                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 847                 return -1;
 848         }
 849
 850         dev = &rte_crypto_devices[dev_id];
 851
 852         /* Device must be stopped before it can be closed */
 853         if (dev->data->dev_started == 1) {
 854                 CDEV_LOG_ERR("Device %u must be stopped before closing",
 855                                 dev_id);
 856                 return -EBUSY;
 857         }
 858
 859         /* We can't close the device if there are outstanding sessions in use */
 860         if (dev->data->session_pool != NULL) {
 861                 if (!rte_mempool_full(dev->data->session_pool)) {
 862                         CDEV_LOG_ERR("dev_id=%u close failed, session mempool "
 863                                         "has sessions still in use, free "
 864                                         "all sessions before calling close",
 865                                         (unsigned)dev_id);
 866                         return -EBUSY;
 867                 }
 868         }
 869
 870         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
 871         retval = (*dev->dev_ops->dev_close)(dev);
 872
 873         if (retval < 0)
 874                 return retval;
 875
 876         return 0;
 877 }
 878
 879 int
 880 rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id,
 881                 const struct rte_cryptodev_qp_conf *qp_conf, int socket_id,
 882                 struct rte_mempool *session_pool)
 883
 884 {
 885         struct rte_cryptodev *dev;
 886
 887         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 888                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 889                 return -EINVAL;
 890         }
 891
 892         dev = &rte_crypto_devices[dev_id];
 893         if (queue_pair_id >= dev->data->nb_queue_pairs) {
 894                 CDEV_LOG_ERR("Invalid queue_pair_id=%d", queue_pair_id);
 895                 return -EINVAL;
 896         }
 897
 898         if (dev->data->dev_started) {
 899                 CDEV_LOG_ERR(
 900                     "device %d must be stopped to allow configuration", dev_id);
 901                 return -EBUSY;
 902         }
 903
 904         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_pair_setup, -ENOTSUP);
 905
 906         return (*dev->dev_ops->queue_pair_setup)(dev, queue_pair_id, qp_conf,
 907                         socket_id, session_pool);
 908 }
 909
 910
 911 int
 912 rte_cryptodev_stats_get(uint8_t dev_id, struct rte_cryptodev_stats *stats)
 913 {
 914         struct rte_cryptodev *dev;
 915
 916         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 917                 CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
 918                 return -ENODEV;
 919         }
 920
 921         if (stats == NULL) {
 922                 CDEV_LOG_ERR("Invalid stats ptr");
 923                 return -EINVAL;
 924         }
 925
 926         dev = &rte_crypto_devices[dev_id];
 927         memset(stats, 0, sizeof(*stats));
 928
 929         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->stats_get, -ENOTSUP);
 930         (*dev->dev_ops->stats_get)(dev, stats);
 931         return 0;
 932 }
 933
 934 void
 935 rte_cryptodev_stats_reset(uint8_t dev_id)
 936 {
 937         struct rte_cryptodev *dev;
 938
 939         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 940                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 941                 return;
 942         }
 943
 944         dev = &rte_crypto_devices[dev_id];
 945
 946         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->stats_reset);
 947         (*dev->dev_ops->stats_reset)(dev);
 948 }
 949
 950
 951 void
 952 rte_cryptodev_info_get(uint8_t dev_id, struct rte_cryptodev_info *dev_info)
 953 {
 954         struct rte_cryptodev *dev;
 955
 956         if (dev_id >= cryptodev_globals.nb_devs) {
 957                 CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
 958                 return;
 959         }
 960
 961         dev = &rte_crypto_devices[dev_id];
 962
 963         memset(dev_info, 0, sizeof(struct rte_cryptodev_info));
 964
 965         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_infos_get);
 966         (*dev->dev_ops->dev_infos_get)(dev, dev_info);
 967
 968         dev_info->driver_name = dev->device->driver->name;
 969 }
 970
 971
 972 int
 973 rte_cryptodev_callback_register(uint8_t dev_id,
 974                         enum rte_cryptodev_event_type event,
 975                         rte_cryptodev_cb_fn cb_fn, void *cb_arg)
 976 {
 977         struct rte_cryptodev *dev;
 978         struct rte_cryptodev_callback *user_cb;
 979
 980         if (!cb_fn)
 981                 return -EINVAL;
 982
 983         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
 984                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
 985                 return -EINVAL;
 986         }
 987
 988         dev = &rte_crypto_devices[dev_id];
 989         rte_spinlock_lock(&rte_cryptodev_cb_lock);
 990
 991         TAILQ_FOREACH(user_cb, &(dev->link_intr_cbs), next) {
 992                 if (user_cb->cb_fn == cb_fn &&
 993                         user_cb->cb_arg == cb_arg &&
 994                         user_cb->event == event) {
 995                         break;
 996                 }
 997         }
 998
 999         /* create a new callback. */
1000         if (user_cb == NULL) {
1001                 user_cb = rte_zmalloc("INTR_USER_CALLBACK",
1002                                 sizeof(struct rte_cryptodev_callback), 0);
1003                 if (user_cb != NULL) {
1004                         user_cb->cb_fn = cb_fn;
1005                         user_cb->cb_arg = cb_arg;
1006                         user_cb->event = event;
1007                         TAILQ_INSERT_TAIL(&(dev->link_intr_cbs), user_cb, next);
1008                 }
1009         }
1010
1011         rte_spinlock_unlock(&rte_cryptodev_cb_lock);
1012         return (user_cb == NULL) ? -ENOMEM : 0;
1013 }
1014
1015 int
1016 rte_cryptodev_callback_unregister(uint8_t dev_id,
1017                         enum rte_cryptodev_event_type event,
1018                         rte_cryptodev_cb_fn cb_fn, void *cb_arg)
1019 {
1020         int ret;
1021         struct rte_cryptodev *dev;
1022         struct rte_cryptodev_callback *cb, *next;
1023
1024         if (!cb_fn)
1025                 return -EINVAL;
1026
1027         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
1028                 CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
1029                 return -EINVAL;
1030         }
1031
1032         dev = &rte_crypto_devices[dev_id];
1033         rte_spinlock_lock(&rte_cryptodev_cb_lock);
1034
1035         ret = 0;
1036         for (cb = TAILQ_FIRST(&dev->link_intr_cbs); cb != NULL; cb = next) {
1037
1038                 next = TAILQ_NEXT(cb, next);
1039
1040                 if (cb->cb_fn != cb_fn || cb->event != event ||
1041                                 (cb->cb_arg != (void *)-1 &&
1042                                 cb->cb_arg != cb_arg))
1043                         continue;
1044
1045                 /*
1046                  * if this callback is not executing right now,
1047                  * then remove it.
1048                  */
1049                 if (cb->active == 0) {
1050                         TAILQ_REMOVE(&(dev->link_intr_cbs), cb, next);
1051                         rte_free(cb);
1052                 } else {
1053                         ret = -EAGAIN;
1054                 }
1055         }
1056
1057         rte_spinlock_unlock(&rte_cryptodev_cb_lock);
1058         return ret;
1059 }
1060
1061 void
1062 rte_cryptodev_pmd_callback_process(struct rte_cryptodev *dev,
1063         enum rte_cryptodev_event_type event)
1064 {
1065         struct rte_cryptodev_callback *cb_lst;
1066         struct rte_cryptodev_callback dev_cb;
1067
1068         rte_spinlock_lock(&rte_cryptodev_cb_lock);
1069         TAILQ_FOREACH(cb_lst, &(dev->link_intr_cbs), next) {
1070                 if (cb_lst->cb_fn == NULL || cb_lst->event != event)
1071                         continue;
1072                 dev_cb = *cb_lst;
1073                 cb_lst->active = 1;
1074                 rte_spinlock_unlock(&rte_cryptodev_cb_lock);
1075                 dev_cb.cb_fn(dev->data->dev_id, dev_cb.event,
1076                                                 dev_cb.cb_arg);
1077                 rte_spinlock_lock(&rte_cryptodev_cb_lock);
1078                 cb_lst->active = 0;
1079         }
1080         rte_spinlock_unlock(&rte_cryptodev_cb_lock);
1081 }
1082
1083
1084 int
1085 rte_cryptodev_sym_session_init(uint8_t dev_id,
1086                 struct rte_cryptodev_sym_session *sess,
1087                 struct rte_crypto_sym_xform *xforms,
1088                 struct rte_mempool *mp)
1089 {
1090         struct rte_cryptodev *dev;
1091         uint8_t index;
1092
1093         dev = rte_cryptodev_pmd_get_dev(dev_id);
1094
1095         if (sess == NULL || xforms == NULL || dev == NULL)
1096                 return -1;
1097
1098         index = dev->driver_id;
1099
1100         if (sess->sess_private_data[index] == NULL) {
1101                 if (dev->dev_ops->session_configure(dev, xforms, sess, mp) < 0) {
1102                         CDEV_LOG_ERR(
1103                                 "dev_id %d failed to configure session details",
1104                                 dev_id);
1105                         return -1;
1106                 }
1107         }
1108
1109         return 0;
1110 }
1111
1112 struct rte_cryptodev_sym_session *
1113 rte_cryptodev_sym_session_create(struct rte_mempool *mp)
1114 {
1115         struct rte_cryptodev_sym_session *sess;
1116
1117         /* Allocate a session structure from the session pool */
1118         if (rte_mempool_get(mp, (void *)&sess)) {
1119                 CDEV_LOG_ERR("couldn't get object from session mempool");
1120                 return NULL;
1121         }
1122
1123         /* Clear device session pointer */
1124         memset(sess, 0, (sizeof(void *) * nb_drivers));
1125
1126         return sess;
1127 }
1128
1129 int
1130 rte_cryptodev_queue_pair_attach_sym_session(uint8_t dev_id, uint16_t qp_id,
1131                 struct rte_cryptodev_sym_session *sess)
1132 {
1133         struct rte_cryptodev *dev;
1134
1135         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
1136                 CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
1137                 return -EINVAL;
1138         }
1139
1140         dev = &rte_crypto_devices[dev_id];
1141
1142         /* The API is optional, not returning error if driver do not suuport */
1143         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->qp_attach_session, 0);
1144
1145         void *sess_priv = get_session_private_data(sess, dev->driver_id);
1146
1147         if (dev->dev_ops->qp_attach_session(dev, qp_id, sess_priv)) {
1148                 CDEV_LOG_ERR("dev_id %d failed to attach qp: %d with session",
1149                                 dev_id, qp_id);
1150                 return -EPERM;
1151         }
1152
1153         return 0;
1154 }
1155
1156 int
1157 rte_cryptodev_queue_pair_detach_sym_session(uint8_t dev_id, uint16_t qp_id,
1158                 struct rte_cryptodev_sym_session *sess)
1159 {
1160         struct rte_cryptodev *dev;
1161
1162         if (!rte_cryptodev_pmd_is_valid_dev(dev_id)) {
1163                 CDEV_LOG_ERR("Invalid dev_id=%d", dev_id);
1164                 return -EINVAL;
1165         }
1166
1167         dev = &rte_crypto_devices[dev_id];
1168
1169         /* The API is optional, not returning error if driver do not suuport */
1170         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->qp_detach_session, 0);
1171
1172         void *sess_priv = get_session_private_data(sess, dev->driver_id);
1173
1174         if (dev->dev_ops->qp_detach_session(dev, qp_id, sess_priv)) {
1175                 CDEV_LOG_ERR("dev_id %d failed to detach qp: %d from session",
1176                                 dev_id, qp_id);
1177                 return -EPERM;
1178         }
1179
1180         return 0;
1181 }
1182
1183 int
1184 rte_cryptodev_sym_session_clear(uint8_t dev_id,
1185                 struct rte_cryptodev_sym_session *sess)
1186 {
1187         struct rte_cryptodev *dev;
1188
1189         dev = rte_cryptodev_pmd_get_dev(dev_id);
1190
1191         if (dev == NULL || sess == NULL)
1192                 return -EINVAL;
1193
1194         dev->dev_ops->session_clear(dev, sess);
1195
1196         return 0;
1197 }
1198
1199 int
1200 rte_cryptodev_sym_session_free(struct rte_cryptodev_sym_session *sess)
1201 {
1202         uint8_t i;
1203         void *sess_priv;
1204         struct rte_mempool *sess_mp;
1205
1206         if (sess == NULL)
1207                 return -EINVAL;
1208
1209         /* Check that all device private data has been freed */
1210         for (i = 0; i < nb_drivers; i++) {
1211                 sess_priv = get_session_private_data(sess, i);
1212                 if (sess_priv != NULL)
1213                         return -EBUSY;
1214         }
1215
1216         /* Return session to mempool */
1217         sess_mp = rte_mempool_from_obj(sess);
1218         rte_mempool_put(sess_mp, sess);
1219
1220         return 0;
1221 }
1222
1223 unsigned int
1224 rte_cryptodev_get_header_session_size(void)
1225 {
1226         /*
1227          * Header contains pointers to the private data
1228          * of all registered drivers
1229          */
1230         return (sizeof(void *) * nb_drivers);
1231 }
1232
1233 unsigned int
1234 rte_cryptodev_get_private_session_size(uint8_t dev_id)
1235 {
1236         struct rte_cryptodev *dev;
1237         unsigned int header_size = sizeof(void *) * nb_drivers;
1238         unsigned int priv_sess_size;
1239
1240         if (!rte_cryptodev_pmd_is_valid_dev(dev_id))
1241                 return 0;
1242
1243         dev = rte_cryptodev_pmd_get_dev(dev_id);
1244
1245         if (*dev->dev_ops->session_get_size == NULL)
1246                 return 0;
1247
1248         priv_sess_size = (*dev->dev_ops->session_get_size)(dev);
1249
1250         /*
1251          * If size is less than session header size,
1252          * return the latter, as this guarantees that
1253          * sessionless operations will work
1254          */
1255         if (priv_sess_size < header_size)
1256                 return header_size;
1257
1258         return priv_sess_size;
1259
1260 }
1261
1262 /** Initialise rte_crypto_op mempool element */
1263 static void
1264 rte_crypto_op_init(struct rte_mempool *mempool,
1265                 void *opaque_arg,
1266                 void *_op_data,
1267                 __rte_unused unsigned i)
1268 {
1269         struct rte_crypto_op *op = _op_data;
1270         enum rte_crypto_op_type type = *(enum rte_crypto_op_type *)opaque_arg;
1271
1272         memset(_op_data, 0, mempool->elt_size);
1273
1274         __rte_crypto_op_reset(op, type);
1275
1276         op->phys_addr = rte_mem_virt2phy(_op_data);
1277         op->mempool = mempool;
1278 }
1279
1280
1281 struct rte_mempool *
1282 rte_crypto_op_pool_create(const char *name, enum rte_crypto_op_type type,
1283                 unsigned nb_elts, unsigned cache_size, uint16_t priv_size,
1284                 int socket_id)
1285 {
1286         struct rte_crypto_op_pool_private *priv;
1287
1288         unsigned elt_size = sizeof(struct rte_crypto_op) +
1289                         sizeof(struct rte_crypto_sym_op) +
1290                         priv_size;
1291
1292         /* lookup mempool in case already allocated */
1293         struct rte_mempool *mp = rte_mempool_lookup(name);
1294
1295         if (mp != NULL) {
1296                 priv = (struct rte_crypto_op_pool_private *)
1297                                 rte_mempool_get_priv(mp);
1298
1299                 if (mp->elt_size != elt_size ||
1300                                 mp->cache_size < cache_size ||
1301                                 mp->size < nb_elts ||
1302                                 priv->priv_size <  priv_size) {
1303                         mp = NULL;
1304                         CDEV_LOG_ERR("Mempool %s already exists but with "
1305                                         "incompatible parameters", name);
1306                         return NULL;
1307                 }
1308                 return mp;
1309         }
1310
1311         mp = rte_mempool_create(
1312                         name,
1313                         nb_elts,
1314                         elt_size,
1315                         cache_size,
1316                         sizeof(struct rte_crypto_op_pool_private),
1317                         NULL,
1318                         NULL,
1319                         rte_crypto_op_init,
1320                         &type,
1321                         socket_id,
1322                         0);
1323
1324         if (mp == NULL) {
1325                 CDEV_LOG_ERR("Failed to create mempool %s", name);
1326                 return NULL;
1327         }
1328
1329         priv = (struct rte_crypto_op_pool_private *)
1330                         rte_mempool_get_priv(mp);
1331
1332         priv->priv_size = priv_size;
1333         priv->type = type;
1334
1335         return mp;
1336 }
1337
1338 int
1339 rte_cryptodev_pmd_create_dev_name(char *name, const char *dev_name_prefix)
1340 {
1341         struct rte_cryptodev *dev = NULL;
1342         uint32_t i = 0;
1343
1344         if (name == NULL)
1345                 return -EINVAL;
1346
1347         for (i = 0; i < RTE_CRYPTO_MAX_DEVS; i++) {
1348                 int ret = snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN,
1349                                 "%s_%u", dev_name_prefix, i);
1350
1351                 if (ret < 0)
1352                         return ret;
1353
1354                 dev = rte_cryptodev_pmd_get_named_dev(name);
1355                 if (!dev)
1356                         return 0;
1357         }
1358
1359         return -1;
1360 }
1361
1362 TAILQ_HEAD(cryptodev_driver_list, cryptodev_driver);
1363
1364 static struct cryptodev_driver_list cryptodev_driver_list =
1365         TAILQ_HEAD_INITIALIZER(cryptodev_driver_list);
1366
1367 struct cryptodev_driver {
1368         TAILQ_ENTRY(cryptodev_driver) next; /**< Next in list. */
1369         const struct rte_driver *driver;
1370         uint8_t id;
1371 };
1372
1373 int
1374 rte_cryptodev_driver_id_get(const char *name)
1375 {
1376         struct cryptodev_driver *driver;
1377         const char *driver_name;
1378
1379         if (name == NULL) {
1380                 RTE_LOG(DEBUG, CRYPTODEV, "name pointer NULL");
1381                 return -1;
1382         }
1383
1384         TAILQ_FOREACH(driver, &cryptodev_driver_list, next) {
1385                 driver_name = driver->driver->name;
1386                 if (strncmp(driver_name, name, strlen(driver_name)) == 0)
1387                         return driver->id;
1388         }
1389         return -1;
1390 }
1391
1392 const char *
1393 rte_cryptodev_driver_name_get(uint8_t driver_id)
1394 {
1395         struct cryptodev_driver *driver;
1396
1397         TAILQ_FOREACH(driver, &cryptodev_driver_list, next)
1398                 if (driver->id == driver_id)
1399                         return driver->driver->name;
1400         return NULL;
1401 }
1402
1403 uint8_t
1404 rte_cryptodev_allocate_driver(const struct rte_driver *drv)
1405 {
1406         struct cryptodev_driver *driver;
1407
1408         driver = malloc(sizeof(*driver));
1409         driver->driver = drv;
1410         driver->id = nb_drivers;
1411
1412         TAILQ_INSERT_TAIL(&cryptodev_driver_list, driver, next);
1413
1414         return nb_drivers++;
1415 }