drivers/crypto/openssl/rte_openssl_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2016-2017 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 <rte_common.h>
  34 #include <rte_hexdump.h>
  35 #include <rte_cryptodev.h>
  36 #include <rte_cryptodev_pmd.h>
  37 #include <rte_cryptodev_vdev.h>
  38 #include <rte_vdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cpuflags.h>
  41
  42 #include <openssl/evp.h>
  43
  44 #include "rte_openssl_pmd_private.h"
  45
  46 #define DES_BLOCK_SIZE 8
  47
  48 static uint8_t cryptodev_driver_id;
  49
  50 static int cryptodev_openssl_remove(struct rte_vdev_device *vdev);
  51
  52 /*----------------------------------------------------------------------------*/
  53
  54 /**
  55  * Increment counter by 1
  56  * Counter is 64 bit array, big-endian
  57  */
  58 static void
  59 ctr_inc(uint8_t *ctr)
  60 {
  61         uint64_t *ctr64 = (uint64_t *)ctr;
  62
  63         *ctr64 = __builtin_bswap64(*ctr64);
  64         (*ctr64)++;
  65         *ctr64 = __builtin_bswap64(*ctr64);
  66 }
  67
  68 /*
  69  *------------------------------------------------------------------------------
  70  * Session Prepare
  71  *------------------------------------------------------------------------------
  72  */
  73
  74 /** Get xform chain order */
  75 static enum openssl_chain_order
  76 openssl_get_chain_order(const struct rte_crypto_sym_xform *xform)
  77 {
  78         enum openssl_chain_order res = OPENSSL_CHAIN_NOT_SUPPORTED;
  79
  80         if (xform != NULL) {
  81                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  82                         if (xform->next == NULL)
  83                                 res =  OPENSSL_CHAIN_ONLY_AUTH;
  84                         else if (xform->next->type ==
  85                                         RTE_CRYPTO_SYM_XFORM_CIPHER)
  86                                 res =  OPENSSL_CHAIN_AUTH_CIPHER;
  87                 }
  88                 if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  89                         if (xform->next == NULL)
  90                                 res =  OPENSSL_CHAIN_ONLY_CIPHER;
  91                         else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  92                                 res =  OPENSSL_CHAIN_CIPHER_AUTH;
  93                 }
  94                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD)
  95                         res = OPENSSL_CHAIN_COMBINED;
  96         }
  97
  98         return res;
  99 }
 100
 101 /** Get session cipher key from input cipher key */
 102 static void
 103 get_cipher_key(uint8_t *input_key, int keylen, uint8_t *session_key)
 104 {
 105         memcpy(session_key, input_key, keylen);
 106 }
 107
 108 /** Get key ede 24 bytes standard from input key */
 109 static int
 110 get_cipher_key_ede(uint8_t *key, int keylen, uint8_t *key_ede)
 111 {
 112         int res = 0;
 113
 114         /* Initialize keys - 24 bytes: [key1-key2-key3] */
 115         switch (keylen) {
 116         case 24:
 117                 memcpy(key_ede, key, 24);
 118                 break;
 119         case 16:
 120                 /* K3 = K1 */
 121                 memcpy(key_ede, key, 16);
 122                 memcpy(key_ede + 16, key, 8);
 123                 break;
 124         case 8:
 125                 /* K1 = K2 = K3 (DES compatibility) */
 126                 memcpy(key_ede, key, 8);
 127                 memcpy(key_ede + 8, key, 8);
 128                 memcpy(key_ede + 16, key, 8);
 129                 break;
 130         default:
 131                 OPENSSL_LOG_ERR("Unsupported key size");
 132                 res = -EINVAL;
 133         }
 134
 135         return res;
 136 }
 137
 138 /** Get adequate openssl function for input cipher algorithm */
 139 static uint8_t
 140 get_cipher_algo(enum rte_crypto_cipher_algorithm sess_algo, size_t keylen,
 141                 const EVP_CIPHER **algo)
 142 {
 143         int res = 0;
 144
 145         if (algo != NULL) {
 146                 switch (sess_algo) {
 147                 case RTE_CRYPTO_CIPHER_3DES_CBC:
 148                         switch (keylen) {
 149                         case 16:
 150                                 *algo = EVP_des_ede_cbc();
 151                                 break;
 152                         case 24:
 153                                 *algo = EVP_des_ede3_cbc();
 154                                 break;
 155                         default:
 156                                 res = -EINVAL;
 157                         }
 158                         break;
 159                 case RTE_CRYPTO_CIPHER_3DES_CTR:
 160                         break;
 161                 case RTE_CRYPTO_CIPHER_AES_CBC:
 162                         switch (keylen) {
 163                         case 16:
 164                                 *algo = EVP_aes_128_cbc();
 165                                 break;
 166                         case 24:
 167                                 *algo = EVP_aes_192_cbc();
 168                                 break;
 169                         case 32:
 170                                 *algo = EVP_aes_256_cbc();
 171                                 break;
 172                         default:
 173                                 res = -EINVAL;
 174                         }
 175                         break;
 176                 case RTE_CRYPTO_CIPHER_AES_CTR:
 177                         switch (keylen) {
 178                         case 16:
 179                                 *algo = EVP_aes_128_ctr();
 180                                 break;
 181                         case 24:
 182                                 *algo = EVP_aes_192_ctr();
 183                                 break;
 184                         case 32:
 185                                 *algo = EVP_aes_256_ctr();
 186                                 break;
 187                         default:
 188                                 res = -EINVAL;
 189                         }
 190                         break;
 191                 default:
 192                         res = -EINVAL;
 193                         break;
 194                 }
 195         } else {
 196                 res = -EINVAL;
 197         }
 198
 199         return res;
 200 }
 201
 202 /** Get adequate openssl function for input auth algorithm */
 203 static uint8_t
 204 get_auth_algo(enum rte_crypto_auth_algorithm sessalgo,
 205                 const EVP_MD **algo)
 206 {
 207         int res = 0;
 208
 209         if (algo != NULL) {
 210                 switch (sessalgo) {
 211                 case RTE_CRYPTO_AUTH_MD5:
 212                 case RTE_CRYPTO_AUTH_MD5_HMAC:
 213                         *algo = EVP_md5();
 214                         break;
 215                 case RTE_CRYPTO_AUTH_SHA1:
 216                 case RTE_CRYPTO_AUTH_SHA1_HMAC:
 217                         *algo = EVP_sha1();
 218                         break;
 219                 case RTE_CRYPTO_AUTH_SHA224:
 220                 case RTE_CRYPTO_AUTH_SHA224_HMAC:
 221                         *algo = EVP_sha224();
 222                         break;
 223                 case RTE_CRYPTO_AUTH_SHA256:
 224                 case RTE_CRYPTO_AUTH_SHA256_HMAC:
 225                         *algo = EVP_sha256();
 226                         break;
 227                 case RTE_CRYPTO_AUTH_SHA384:
 228                 case RTE_CRYPTO_AUTH_SHA384_HMAC:
 229                         *algo = EVP_sha384();
 230                         break;
 231                 case RTE_CRYPTO_AUTH_SHA512:
 232                 case RTE_CRYPTO_AUTH_SHA512_HMAC:
 233                         *algo = EVP_sha512();
 234                         break;
 235                 default:
 236                         res = -EINVAL;
 237                         break;
 238                 }
 239         } else {
 240                 res = -EINVAL;
 241         }
 242
 243         return res;
 244 }
 245
 246 /** Get adequate openssl function for input cipher algorithm */
 247 static uint8_t
 248 get_aead_algo(enum rte_crypto_aead_algorithm sess_algo, size_t keylen,
 249                 const EVP_CIPHER **algo)
 250 {
 251         int res = 0;
 252
 253         if (algo != NULL) {
 254                 switch (sess_algo) {
 255                 case RTE_CRYPTO_AEAD_AES_GCM:
 256                         switch (keylen) {
 257                         case 16:
 258                                 *algo = EVP_aes_128_gcm();
 259                                 break;
 260                         case 24:
 261                                 *algo = EVP_aes_192_gcm();
 262                                 break;
 263                         case 32:
 264                                 *algo = EVP_aes_256_gcm();
 265                                 break;
 266                         default:
 267                                 res = -EINVAL;
 268                         }
 269                         break;
 270                 default:
 271                         res = -EINVAL;
 272                         break;
 273                 }
 274         } else {
 275                 res = -EINVAL;
 276         }
 277
 278         return res;
 279 }
 280
 281 /** Set session cipher parameters */
 282 static int
 283 openssl_set_session_cipher_parameters(struct openssl_session *sess,
 284                 const struct rte_crypto_sym_xform *xform)
 285 {
 286         /* Select cipher direction */
 287         sess->cipher.direction = xform->cipher.op;
 288         /* Select cipher key */
 289         sess->cipher.key.length = xform->cipher.key.length;
 290
 291         /* Set IV parameters */
 292         sess->iv.offset = xform->cipher.iv.offset;
 293         sess->iv.length = xform->cipher.iv.length;
 294
 295         /* Select cipher algo */
 296         switch (xform->cipher.algo) {
 297         case RTE_CRYPTO_CIPHER_3DES_CBC:
 298         case RTE_CRYPTO_CIPHER_AES_CBC:
 299         case RTE_CRYPTO_CIPHER_AES_CTR:
 300                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 301                 sess->cipher.algo = xform->cipher.algo;
 302                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 303
 304                 if (get_cipher_algo(sess->cipher.algo, sess->cipher.key.length,
 305                                 &sess->cipher.evp_algo) != 0)
 306                         return -EINVAL;
 307
 308                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 309                         sess->cipher.key.data);
 310
 311                 break;
 312
 313         case RTE_CRYPTO_CIPHER_3DES_CTR:
 314                 sess->cipher.mode = OPENSSL_CIPHER_DES3CTR;
 315                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 316
 317                 if (get_cipher_key_ede(xform->cipher.key.data,
 318                                 sess->cipher.key.length,
 319                                 sess->cipher.key.data) != 0)
 320                         return -EINVAL;
 321                 break;
 322         case RTE_CRYPTO_CIPHER_DES_DOCSISBPI:
 323                 sess->cipher.algo = xform->cipher.algo;
 324                 sess->chain_order = OPENSSL_CHAIN_CIPHER_BPI;
 325                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 326                 sess->cipher.evp_algo = EVP_des_cbc();
 327
 328                 sess->cipher.bpi_ctx = EVP_CIPHER_CTX_new();
 329                 /* IV will be ECB encrypted whether direction is encrypt or decrypt */
 330                 if (EVP_EncryptInit_ex(sess->cipher.bpi_ctx, EVP_des_ecb(),
 331                                 NULL, xform->cipher.key.data, 0) != 1)
 332                         return -EINVAL;
 333
 334                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 335                         sess->cipher.key.data);
 336                 break;
 337         default:
 338                 sess->cipher.algo = RTE_CRYPTO_CIPHER_NULL;
 339                 return -EINVAL;
 340         }
 341
 342         return 0;
 343 }
 344
 345 /* Set session auth parameters */
 346 static int
 347 openssl_set_session_auth_parameters(struct openssl_session *sess,
 348                 const struct rte_crypto_sym_xform *xform)
 349 {
 350         /* Select auth generate/verify */
 351         sess->auth.operation = xform->auth.op;
 352         sess->auth.algo = xform->auth.algo;
 353
 354         /* Select auth algo */
 355         switch (xform->auth.algo) {
 356         case RTE_CRYPTO_AUTH_AES_GMAC:
 357                 sess->chain_order = OPENSSL_CHAIN_COMBINED;
 358
 359                 /* Set IV parameters */
 360                 sess->iv.offset = xform->auth.iv.offset;
 361                 sess->iv.length = xform->auth.iv.length;
 362
 363                 /*
 364                  * OpenSSL requires GMAC to be a GCM operation
 365                  * with no cipher data length
 366                  */
 367                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 368                 if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_GENERATE)
 369                         sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
 370                 else
 371                         sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_DECRYPT;
 372
 373                 sess->cipher.key.length = xform->auth.key.length;
 374                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 375
 376                 if (get_aead_algo(RTE_CRYPTO_AEAD_AES_GCM,
 377                                 sess->cipher.key.length,
 378                                 &sess->cipher.evp_algo) != 0)
 379                         return -EINVAL;
 380
 381                 get_cipher_key(xform->auth.key.data, xform->auth.key.length,
 382                         sess->cipher.key.data);
 383
 384                 break;
 385
 386         case RTE_CRYPTO_AUTH_MD5:
 387         case RTE_CRYPTO_AUTH_SHA1:
 388         case RTE_CRYPTO_AUTH_SHA224:
 389         case RTE_CRYPTO_AUTH_SHA256:
 390         case RTE_CRYPTO_AUTH_SHA384:
 391         case RTE_CRYPTO_AUTH_SHA512:
 392                 sess->auth.mode = OPENSSL_AUTH_AS_AUTH;
 393                 if (get_auth_algo(xform->auth.algo,
 394                                 &sess->auth.auth.evp_algo) != 0)
 395                         return -EINVAL;
 396                 sess->auth.auth.ctx = EVP_MD_CTX_create();
 397                 break;
 398
 399         case RTE_CRYPTO_AUTH_MD5_HMAC:
 400         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 401         case RTE_CRYPTO_AUTH_SHA224_HMAC:
 402         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 403         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 404         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 405                 sess->auth.mode = OPENSSL_AUTH_AS_HMAC;
 406                 sess->auth.hmac.ctx = EVP_MD_CTX_create();
 407                 if (get_auth_algo(xform->auth.algo,
 408                                 &sess->auth.hmac.evp_algo) != 0)
 409                         return -EINVAL;
 410                 sess->auth.hmac.pkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
 411                                 xform->auth.key.data, xform->auth.key.length);
 412                 break;
 413
 414         default:
 415                 return -EINVAL;
 416         }
 417
 418         sess->auth.digest_length = xform->auth.digest_length;
 419
 420         return 0;
 421 }
 422
 423 /* Set session AEAD parameters */
 424 static int
 425 openssl_set_session_aead_parameters(struct openssl_session *sess,
 426                 const struct rte_crypto_sym_xform *xform)
 427 {
 428         /* Select cipher direction */
 429         sess->cipher.direction = xform->cipher.op;
 430         /* Select cipher key */
 431         sess->cipher.key.length = xform->aead.key.length;
 432
 433         /* Set IV parameters */
 434         sess->iv.offset = xform->aead.iv.offset;
 435         sess->iv.length = xform->aead.iv.length;
 436
 437         /* Select auth generate/verify */
 438         sess->auth.operation = xform->auth.op;
 439         sess->auth.algo = xform->auth.algo;
 440
 441         /* Select auth algo */
 442         switch (xform->aead.algo) {
 443         case RTE_CRYPTO_AEAD_AES_GCM:
 444                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 445                 sess->aead_algo = xform->aead.algo;
 446                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 447
 448                 if (get_aead_algo(sess->aead_algo, sess->cipher.key.length,
 449                                 &sess->cipher.evp_algo) != 0)
 450                         return -EINVAL;
 451
 452                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 453                         sess->cipher.key.data);
 454
 455                 sess->chain_order = OPENSSL_CHAIN_COMBINED;
 456                 break;
 457         default:
 458                 return -EINVAL;
 459         }
 460
 461         sess->auth.aad_length = xform->aead.add_auth_data_length;
 462         sess->auth.digest_length = xform->aead.digest_length;
 463
 464         return 0;
 465 }
 466
 467 /** Parse crypto xform chain and set private session parameters */
 468 int
 469 openssl_set_session_parameters(struct openssl_session *sess,
 470                 const struct rte_crypto_sym_xform *xform)
 471 {
 472         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 473         const struct rte_crypto_sym_xform *auth_xform = NULL;
 474         const struct rte_crypto_sym_xform *aead_xform = NULL;
 475
 476         sess->chain_order = openssl_get_chain_order(xform);
 477         switch (sess->chain_order) {
 478         case OPENSSL_CHAIN_ONLY_CIPHER:
 479                 cipher_xform = xform;
 480                 break;
 481         case OPENSSL_CHAIN_ONLY_AUTH:
 482                 auth_xform = xform;
 483                 break;
 484         case OPENSSL_CHAIN_CIPHER_AUTH:
 485                 cipher_xform = xform;
 486                 auth_xform = xform->next;
 487                 break;
 488         case OPENSSL_CHAIN_AUTH_CIPHER:
 489                 auth_xform = xform;
 490                 cipher_xform = xform->next;
 491                 break;
 492         case OPENSSL_CHAIN_COMBINED:
 493                 aead_xform = xform;
 494                 break;
 495         default:
 496                 return -EINVAL;
 497         }
 498
 499         /* Default IV length = 0 */
 500         sess->iv.length = 0;
 501
 502         /* cipher_xform must be check before auth_xform */
 503         if (cipher_xform) {
 504                 if (openssl_set_session_cipher_parameters(
 505                                 sess, cipher_xform)) {
 506                         OPENSSL_LOG_ERR(
 507                                 "Invalid/unsupported cipher parameters");
 508                         return -EINVAL;
 509                 }
 510         }
 511
 512         if (auth_xform) {
 513                 if (openssl_set_session_auth_parameters(sess, auth_xform)) {
 514                         OPENSSL_LOG_ERR(
 515                                 "Invalid/unsupported auth parameters");
 516                         return -EINVAL;
 517                 }
 518         }
 519
 520         if (aead_xform) {
 521                 if (openssl_set_session_aead_parameters(sess, aead_xform)) {
 522                         OPENSSL_LOG_ERR(
 523                                 "Invalid/unsupported auth parameters");
 524                         return -EINVAL;
 525                 }
 526         }
 527
 528         return 0;
 529 }
 530
 531 /** Reset private session parameters */
 532 void
 533 openssl_reset_session(struct openssl_session *sess)
 534 {
 535         EVP_CIPHER_CTX_free(sess->cipher.ctx);
 536
 537         if (sess->chain_order == OPENSSL_CHAIN_CIPHER_BPI)
 538                 EVP_CIPHER_CTX_free(sess->cipher.bpi_ctx);
 539
 540         switch (sess->auth.mode) {
 541         case OPENSSL_AUTH_AS_AUTH:
 542                 EVP_MD_CTX_destroy(sess->auth.auth.ctx);
 543                 break;
 544         case OPENSSL_AUTH_AS_HMAC:
 545                 EVP_PKEY_free(sess->auth.hmac.pkey);
 546                 EVP_MD_CTX_destroy(sess->auth.hmac.ctx);
 547                 break;
 548         default:
 549                 break;
 550         }
 551 }
 552
 553 /** Provide session for operation */
 554 static struct openssl_session *
 555 get_session(struct openssl_qp *qp, struct rte_crypto_op *op)
 556 {
 557         struct openssl_session *sess = NULL;
 558
 559         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 560                 /* get existing session */
 561                 if (likely(op->sym->session != NULL))
 562                         sess = (struct openssl_session *)
 563                                 op->sym->session->_private;
 564         } else  {
 565                 /* provide internal session */
 566                 void *_sess = NULL;
 567
 568                 if (!rte_mempool_get(qp->sess_mp, (void **)&_sess)) {
 569                         sess = (struct openssl_session *)
 570                                 ((struct rte_cryptodev_sym_session *)_sess)
 571                                 ->_private;
 572
 573                         if (unlikely(openssl_set_session_parameters(
 574                                         sess, op->sym->xform) != 0)) {
 575                                 rte_mempool_put(qp->sess_mp, _sess);
 576                                 sess = NULL;
 577                         } else
 578                                 op->sym->session = _sess;
 579                 }
 580         }
 581
 582         if (sess == NULL)
 583                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 584
 585         return sess;
 586 }
 587
 588 /*
 589  *------------------------------------------------------------------------------
 590  * Process Operations
 591  *------------------------------------------------------------------------------
 592  */
 593 static inline int
 594 process_openssl_encryption_update(struct rte_mbuf *mbuf_src, int offset,
 595                 uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx)
 596 {
 597         struct rte_mbuf *m;
 598         int dstlen;
 599         int l, n = srclen;
 600         uint8_t *src;
 601
 602         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 603                         m = m->next)
 604                 offset -= rte_pktmbuf_data_len(m);
 605
 606         if (m == 0)
 607                 return -1;
 608
 609         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 610
 611         l = rte_pktmbuf_data_len(m) - offset;
 612         if (srclen <= l) {
 613                 if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
 614                         return -1;
 615                 *dst += l;
 616                 return 0;
 617         }
 618
 619         if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 620                 return -1;
 621
 622         *dst += dstlen;
 623         n -= l;
 624
 625         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 626                 src = rte_pktmbuf_mtod(m, uint8_t *);
 627                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 628                 if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 629                         return -1;
 630                 *dst += dstlen;
 631                 n -= l;
 632         }
 633
 634         return 0;
 635 }
 636
 637 static inline int
 638 process_openssl_decryption_update(struct rte_mbuf *mbuf_src, int offset,
 639                 uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx)
 640 {
 641         struct rte_mbuf *m;
 642         int dstlen;
 643         int l, n = srclen;
 644         uint8_t *src;
 645
 646         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 647                         m = m->next)
 648                 offset -= rte_pktmbuf_data_len(m);
 649
 650         if (m == 0)
 651                 return -1;
 652
 653         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 654
 655         l = rte_pktmbuf_data_len(m) - offset;
 656         if (srclen <= l) {
 657                 if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
 658                         return -1;
 659                 *dst += l;
 660                 return 0;
 661         }
 662
 663         if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 664                 return -1;
 665
 666         *dst += dstlen;
 667         n -= l;
 668
 669         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 670                 src = rte_pktmbuf_mtod(m, uint8_t *);
 671                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 672                 if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 673                         return -1;
 674                 *dst += dstlen;
 675                 n -= l;
 676         }
 677
 678         return 0;
 679 }
 680
 681 /** Process standard openssl cipher encryption */
 682 static int
 683 process_openssl_cipher_encrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
 684                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 685                 EVP_CIPHER_CTX *ctx, const EVP_CIPHER *algo)
 686 {
 687         int totlen;
 688
 689         if (EVP_EncryptInit_ex(ctx, algo, NULL, key, iv) <= 0)
 690                 goto process_cipher_encrypt_err;
 691
 692         EVP_CIPHER_CTX_set_padding(ctx, 0);
 693
 694         if (process_openssl_encryption_update(mbuf_src, offset, &dst,
 695                         srclen, ctx))
 696                 goto process_cipher_encrypt_err;
 697
 698         if (EVP_EncryptFinal_ex(ctx, dst, &totlen) <= 0)
 699                 goto process_cipher_encrypt_err;
 700
 701         return 0;
 702
 703 process_cipher_encrypt_err:
 704         OPENSSL_LOG_ERR("Process openssl cipher encrypt failed");
 705         return -EINVAL;
 706 }
 707
 708 /** Process standard openssl cipher encryption */
 709 static int
 710 process_openssl_cipher_bpi_encrypt(uint8_t *src, uint8_t *dst,
 711                 uint8_t *iv, int srclen,
 712                 EVP_CIPHER_CTX *ctx)
 713 {
 714         uint8_t i;
 715         uint8_t encrypted_iv[DES_BLOCK_SIZE];
 716         int encrypted_ivlen;
 717
 718         if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen,
 719                         iv, DES_BLOCK_SIZE) <= 0)
 720                 goto process_cipher_encrypt_err;
 721
 722         for (i = 0; i < srclen; i++)
 723                 *(dst + i) = *(src + i) ^ (encrypted_iv[i]);
 724
 725         return 0;
 726
 727 process_cipher_encrypt_err:
 728         OPENSSL_LOG_ERR("Process openssl cipher bpi encrypt failed");
 729         return -EINVAL;
 730 }
 731 /** Process standard openssl cipher decryption */
 732 static int
 733 process_openssl_cipher_decrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
 734                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 735                 EVP_CIPHER_CTX *ctx, const EVP_CIPHER *algo)
 736 {
 737         int totlen;
 738
 739         if (EVP_DecryptInit_ex(ctx, algo, NULL, key, iv) <= 0)
 740                 goto process_cipher_decrypt_err;
 741
 742         EVP_CIPHER_CTX_set_padding(ctx, 0);
 743
 744         if (process_openssl_decryption_update(mbuf_src, offset, &dst,
 745                         srclen, ctx))
 746                 goto process_cipher_decrypt_err;
 747
 748         if (EVP_DecryptFinal_ex(ctx, dst, &totlen) <= 0)
 749                 goto process_cipher_decrypt_err;
 750         return 0;
 751
 752 process_cipher_decrypt_err:
 753         OPENSSL_LOG_ERR("Process openssl cipher decrypt failed");
 754         return -EINVAL;
 755 }
 756
 757 /** Process cipher des 3 ctr encryption, decryption algorithm */
 758 static int
 759 process_openssl_cipher_des3ctr(struct rte_mbuf *mbuf_src, uint8_t *dst,
 760                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 761                 EVP_CIPHER_CTX *ctx)
 762 {
 763         uint8_t ebuf[8], ctr[8];
 764         int unused, n;
 765         struct rte_mbuf *m;
 766         uint8_t *src;
 767         int l;
 768
 769         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 770                         m = m->next)
 771                 offset -= rte_pktmbuf_data_len(m);
 772
 773         if (m == 0)
 774                 goto process_cipher_des3ctr_err;
 775
 776         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 777         l = rte_pktmbuf_data_len(m) - offset;
 778
 779         /* We use 3DES encryption also for decryption.
 780          * IV is not important for 3DES ecb
 781          */
 782         if (EVP_EncryptInit_ex(ctx, EVP_des_ede3_ecb(), NULL, key, NULL) <= 0)
 783                 goto process_cipher_des3ctr_err;
 784
 785         memcpy(ctr, iv, 8);
 786
 787         for (n = 0; n < srclen; n++) {
 788                 if (n % 8 == 0) {
 789                         if (EVP_EncryptUpdate(ctx,
 790                                         (unsigned char *)&ebuf, &unused,
 791                                         (const unsigned char *)&ctr, 8) <= 0)
 792                                 goto process_cipher_des3ctr_err;
 793                         ctr_inc(ctr);
 794                 }
 795                 dst[n] = *(src++) ^ ebuf[n % 8];
 796
 797                 l--;
 798                 if (!l) {
 799                         m = m->next;
 800                         if (m) {
 801                                 src = rte_pktmbuf_mtod(m, uint8_t *);
 802                                 l = rte_pktmbuf_data_len(m);
 803                         }
 804                 }
 805         }
 806
 807         return 0;
 808
 809 process_cipher_des3ctr_err:
 810         OPENSSL_LOG_ERR("Process openssl cipher des 3 ede ctr failed");
 811         return -EINVAL;
 812 }
 813
 814 /** Process auth/encription aes-gcm algorithm */
 815 static int
 816 process_openssl_auth_encryption_gcm(struct rte_mbuf *mbuf_src, int offset,
 817                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv, int ivlen,
 818                 uint8_t *key, uint8_t *dst, uint8_t *tag,
 819                 EVP_CIPHER_CTX *ctx, const EVP_CIPHER *algo)
 820 {
 821         int len = 0, unused = 0;
 822         uint8_t empty[] = {};
 823
 824         if (EVP_EncryptInit_ex(ctx, algo, NULL, NULL, NULL) <= 0)
 825                 goto process_auth_encryption_gcm_err;
 826
 827         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, ivlen, NULL) <= 0)
 828                 goto process_auth_encryption_gcm_err;
 829
 830         if (EVP_EncryptInit_ex(ctx, NULL, NULL, key, iv) <= 0)
 831                 goto process_auth_encryption_gcm_err;
 832
 833         if (aadlen > 0)
 834                 if (EVP_EncryptUpdate(ctx, NULL, &len, aad, aadlen) <= 0)
 835                         goto process_auth_encryption_gcm_err;
 836
 837         if (srclen > 0)
 838                 if (process_openssl_encryption_update(mbuf_src, offset, &dst,
 839                                 srclen, ctx))
 840                         goto process_auth_encryption_gcm_err;
 841
 842         /* Workaround open ssl bug in version less then 1.0.1f */
 843         if (EVP_EncryptUpdate(ctx, empty, &unused, empty, 0) <= 0)
 844                 goto process_auth_encryption_gcm_err;
 845
 846         if (EVP_EncryptFinal_ex(ctx, dst, &len) <= 0)
 847                 goto process_auth_encryption_gcm_err;
 848
 849         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, 16, tag) <= 0)
 850                 goto process_auth_encryption_gcm_err;
 851
 852         return 0;
 853
 854 process_auth_encryption_gcm_err:
 855         OPENSSL_LOG_ERR("Process openssl auth encryption gcm failed");
 856         return -EINVAL;
 857 }
 858
 859 static int
 860 process_openssl_auth_decryption_gcm(struct rte_mbuf *mbuf_src, int offset,
 861                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv, int ivlen,
 862                 uint8_t *key, uint8_t *dst, uint8_t *tag, EVP_CIPHER_CTX *ctx,
 863                 const EVP_CIPHER *algo)
 864 {
 865         int len = 0, unused = 0;
 866         uint8_t empty[] = {};
 867
 868         if (EVP_DecryptInit_ex(ctx, algo, NULL, NULL, NULL) <= 0)
 869                 goto process_auth_decryption_gcm_err;
 870
 871         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, ivlen, NULL) <= 0)
 872                 goto process_auth_decryption_gcm_err;
 873
 874         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, 16, tag) <= 0)
 875                 goto process_auth_decryption_gcm_err;
 876
 877         if (EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv) <= 0)
 878                 goto process_auth_decryption_gcm_err;
 879
 880         if (aadlen > 0)
 881                 if (EVP_DecryptUpdate(ctx, NULL, &len, aad, aadlen) <= 0)
 882                         goto process_auth_decryption_gcm_err;
 883
 884         if (srclen > 0)
 885                 if (process_openssl_decryption_update(mbuf_src, offset, &dst,
 886                                 srclen, ctx))
 887                         goto process_auth_decryption_gcm_err;
 888
 889         /* Workaround open ssl bug in version less then 1.0.1f */
 890         if (EVP_DecryptUpdate(ctx, empty, &unused, empty, 0) <= 0)
 891                 goto process_auth_decryption_gcm_err;
 892
 893         if (EVP_DecryptFinal_ex(ctx, dst, &len) <= 0)
 894                 goto process_auth_decryption_gcm_final_err;
 895
 896         return 0;
 897
 898 process_auth_decryption_gcm_err:
 899         OPENSSL_LOG_ERR("Process openssl auth description gcm failed");
 900         return -EINVAL;
 901
 902 process_auth_decryption_gcm_final_err:
 903         return -EFAULT;
 904 }
 905
 906 /** Process standard openssl auth algorithms */
 907 static int
 908 process_openssl_auth(struct rte_mbuf *mbuf_src, uint8_t *dst, int offset,
 909                 __rte_unused uint8_t *iv, __rte_unused EVP_PKEY * pkey,
 910                 int srclen, EVP_MD_CTX *ctx, const EVP_MD *algo)
 911 {
 912         size_t dstlen;
 913         struct rte_mbuf *m;
 914         int l, n = srclen;
 915         uint8_t *src;
 916
 917         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 918                         m = m->next)
 919                 offset -= rte_pktmbuf_data_len(m);
 920
 921         if (m == 0)
 922                 goto process_auth_err;
 923
 924         if (EVP_DigestInit_ex(ctx, algo, NULL) <= 0)
 925                 goto process_auth_err;
 926
 927         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 928
 929         l = rte_pktmbuf_data_len(m) - offset;
 930         if (srclen <= l) {
 931                 if (EVP_DigestUpdate(ctx, (char *)src, srclen) <= 0)
 932                         goto process_auth_err;
 933                 goto process_auth_final;
 934         }
 935
 936         if (EVP_DigestUpdate(ctx, (char *)src, l) <= 0)
 937                 goto process_auth_err;
 938
 939         n -= l;
 940
 941         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 942                 src = rte_pktmbuf_mtod(m, uint8_t *);
 943                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 944                 if (EVP_DigestUpdate(ctx, (char *)src, l) <= 0)
 945                         goto process_auth_err;
 946                 n -= l;
 947         }
 948
 949 process_auth_final:
 950         if (EVP_DigestFinal_ex(ctx, dst, (unsigned int *)&dstlen) <= 0)
 951                 goto process_auth_err;
 952         return 0;
 953
 954 process_auth_err:
 955         OPENSSL_LOG_ERR("Process openssl auth failed");
 956         return -EINVAL;
 957 }
 958
 959 /** Process standard openssl auth algorithms with hmac */
 960 static int
 961 process_openssl_auth_hmac(struct rte_mbuf *mbuf_src, uint8_t *dst, int offset,
 962                 __rte_unused uint8_t *iv, EVP_PKEY *pkey,
 963                 int srclen, EVP_MD_CTX *ctx, const EVP_MD *algo)
 964 {
 965         size_t dstlen;
 966         struct rte_mbuf *m;
 967         int l, n = srclen;
 968         uint8_t *src;
 969
 970         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 971                         m = m->next)
 972                 offset -= rte_pktmbuf_data_len(m);
 973
 974         if (m == 0)
 975                 goto process_auth_err;
 976
 977         if (EVP_DigestSignInit(ctx, NULL, algo, NULL, pkey) <= 0)
 978                 goto process_auth_err;
 979
 980         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 981
 982         l = rte_pktmbuf_data_len(m) - offset;
 983         if (srclen <= l) {
 984                 if (EVP_DigestSignUpdate(ctx, (char *)src, srclen) <= 0)
 985                         goto process_auth_err;
 986                 goto process_auth_final;
 987         }
 988
 989         if (EVP_DigestSignUpdate(ctx, (char *)src, l) <= 0)
 990                 goto process_auth_err;
 991
 992         n -= l;
 993
 994         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 995                 src = rte_pktmbuf_mtod(m, uint8_t *);
 996                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 997                 if (EVP_DigestSignUpdate(ctx, (char *)src, l) <= 0)
 998                         goto process_auth_err;
 999                 n -= l;
1000         }
1001
1002 process_auth_final:
1003         if (EVP_DigestSignFinal(ctx, dst, &dstlen) <= 0)
1004                 goto process_auth_err;
1005
1006         return 0;
1007
1008 process_auth_err:
1009         OPENSSL_LOG_ERR("Process openssl auth failed");
1010         return -EINVAL;
1011 }
1012
1013 /*----------------------------------------------------------------------------*/
1014
1015 /** Process auth/cipher combined operation */
1016 static void
1017 process_openssl_combined_op
1018                 (struct rte_crypto_op *op, struct openssl_session *sess,
1019                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1020 {
1021         /* cipher */
1022         uint8_t *dst = NULL, *iv, *tag, *aad;
1023         int srclen, ivlen, aadlen, status = -1;
1024         uint32_t offset;
1025
1026         /*
1027          * Segmented destination buffer is not supported for
1028          * encryption/decryption
1029          */
1030         if (!rte_pktmbuf_is_contiguous(mbuf_dst)) {
1031                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1032                 return;
1033         }
1034
1035         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1036                         sess->iv.offset);
1037         ivlen = sess->iv.length;
1038         if (sess->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC) {
1039                 srclen = 0;
1040                 offset = op->sym->auth.data.offset;
1041                 aadlen = op->sym->auth.data.length;
1042                 aad = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
1043                                 op->sym->auth.data.offset);
1044                 tag = op->sym->auth.digest.data;
1045                 if (tag == NULL)
1046                         tag = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1047                                 offset + aadlen);
1048         } else {
1049                 srclen = op->sym->aead.data.length;
1050                 dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1051                                 op->sym->aead.data.offset);
1052                 offset = op->sym->aead.data.offset;
1053                 aad = op->sym->aead.aad.data;
1054                 aadlen = sess->auth.aad_length;
1055                 tag = op->sym->aead.digest.data;
1056                 if (tag == NULL)
1057                         tag = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1058                                 offset + srclen);
1059         }
1060
1061         if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
1062                 status = process_openssl_auth_encryption_gcm(
1063                                 mbuf_src, offset, srclen,
1064                                 aad, aadlen, iv, ivlen, sess->cipher.key.data,
1065                                 dst, tag, sess->cipher.ctx,
1066                                 sess->cipher.evp_algo);
1067         else
1068                 status = process_openssl_auth_decryption_gcm(
1069                                 mbuf_src, offset, srclen,
1070                                 aad, aadlen, iv, ivlen, sess->cipher.key.data,
1071                                 dst, tag, sess->cipher.ctx,
1072                                 sess->cipher.evp_algo);
1073
1074         if (status != 0) {
1075                 if (status == (-EFAULT) &&
1076                                 sess->auth.operation ==
1077                                                 RTE_CRYPTO_AUTH_OP_VERIFY)
1078                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
1079                 else
1080                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1081         }
1082 }
1083
1084 /** Process cipher operation */
1085 static void
1086 process_openssl_cipher_op
1087                 (struct rte_crypto_op *op, struct openssl_session *sess,
1088                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1089 {
1090         uint8_t *dst, *iv;
1091         int srclen, status;
1092
1093         /*
1094          * Segmented destination buffer is not supported for
1095          * encryption/decryption
1096          */
1097         if (!rte_pktmbuf_is_contiguous(mbuf_dst)) {
1098                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1099                 return;
1100         }
1101
1102         srclen = op->sym->cipher.data.length;
1103         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1104                         op->sym->cipher.data.offset);
1105
1106         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1107                         sess->iv.offset);
1108
1109         if (sess->cipher.mode == OPENSSL_CIPHER_LIB)
1110                 if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
1111                         status = process_openssl_cipher_encrypt(mbuf_src, dst,
1112                                         op->sym->cipher.data.offset, iv,
1113                                         sess->cipher.key.data, srclen,
1114                                         sess->cipher.ctx,
1115                                         sess->cipher.evp_algo);
1116                 else
1117                         status = process_openssl_cipher_decrypt(mbuf_src, dst,
1118                                         op->sym->cipher.data.offset, iv,
1119                                         sess->cipher.key.data, srclen,
1120                                         sess->cipher.ctx,
1121                                         sess->cipher.evp_algo);
1122         else
1123                 status = process_openssl_cipher_des3ctr(mbuf_src, dst,
1124                                 op->sym->cipher.data.offset, iv,
1125                                 sess->cipher.key.data, srclen,
1126                                 sess->cipher.ctx);
1127
1128         if (status != 0)
1129                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1130 }
1131
1132 /** Process cipher operation */
1133 static void
1134 process_openssl_docsis_bpi_op(struct rte_crypto_op *op,
1135                 struct openssl_session *sess, struct rte_mbuf *mbuf_src,
1136                 struct rte_mbuf *mbuf_dst)
1137 {
1138         uint8_t *src, *dst, *iv;
1139         uint8_t block_size, last_block_len;
1140         int srclen, status = 0;
1141
1142         srclen = op->sym->cipher.data.length;
1143         src = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
1144                         op->sym->cipher.data.offset);
1145         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1146                         op->sym->cipher.data.offset);
1147
1148         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1149                         sess->iv.offset);
1150
1151         block_size = DES_BLOCK_SIZE;
1152
1153         last_block_len = srclen % block_size;
1154         if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
1155                 /* Encrypt only with ECB mode XOR IV */
1156                 if (srclen < block_size) {
1157                         status = process_openssl_cipher_bpi_encrypt(src, dst,
1158                                         iv, srclen,
1159                                         sess->cipher.bpi_ctx);
1160                 } else {
1161                         srclen -= last_block_len;
1162                         /* Encrypt with the block aligned stream with CBC mode */
1163                         status = process_openssl_cipher_encrypt(mbuf_src, dst,
1164                                         op->sym->cipher.data.offset, iv,
1165                                         sess->cipher.key.data, srclen,
1166                                         sess->cipher.ctx, sess->cipher.evp_algo);
1167                         if (last_block_len) {
1168                                 /* Point at last block */
1169                                 dst += srclen;
1170                                 /*
1171                                  * IV is the last encrypted block from
1172                                  * the previous operation
1173                                  */
1174                                 iv = dst - block_size;
1175                                 src += srclen;
1176                                 srclen = last_block_len;
1177                                 /* Encrypt the last frame with ECB mode */
1178                                 status |= process_openssl_cipher_bpi_encrypt(src,
1179                                                 dst, iv,
1180                                                 srclen, sess->cipher.bpi_ctx);
1181                         }
1182                 }
1183         } else {
1184                 /* Decrypt only with ECB mode (encrypt, as it is same operation) */
1185                 if (srclen < block_size) {
1186                         status = process_openssl_cipher_bpi_encrypt(src, dst,
1187                                         iv,
1188                                         srclen,
1189                                         sess->cipher.bpi_ctx);
1190                 } else {
1191                         if (last_block_len) {
1192                                 /* Point at last block */
1193                                 dst += srclen - last_block_len;
1194                                 src += srclen - last_block_len;
1195                                 /*
1196                                  * IV is the last full block
1197                                  */
1198                                 iv = src - block_size;
1199                                 /*
1200                                  * Decrypt the last frame with ECB mode
1201                                  * (encrypt, as it is the same operation)
1202                                  */
1203                                 status = process_openssl_cipher_bpi_encrypt(src,
1204                                                 dst, iv,
1205                                                 last_block_len, sess->cipher.bpi_ctx);
1206                                 /* Prepare parameters for CBC mode op */
1207                                 iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1208                                                 sess->iv.offset);
1209                                 dst += last_block_len - srclen;
1210                                 srclen -= last_block_len;
1211                         }
1212
1213                         /* Decrypt with CBC mode */
1214                         status |= process_openssl_cipher_decrypt(mbuf_src, dst,
1215                                         op->sym->cipher.data.offset, iv,
1216                                         sess->cipher.key.data, srclen,
1217                                         sess->cipher.ctx,
1218                                         sess->cipher.evp_algo);
1219                 }
1220         }
1221
1222         if (status != 0)
1223                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1224 }
1225
1226 /** Process auth operation */
1227 static void
1228 process_openssl_auth_op
1229                 (struct rte_crypto_op *op, struct openssl_session *sess,
1230                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1231 {
1232         uint8_t *dst;
1233         int srclen, status;
1234
1235         srclen = op->sym->auth.data.length;
1236
1237         if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY)
1238                 dst = (uint8_t *)rte_pktmbuf_append(mbuf_src,
1239                                 sess->auth.digest_length);
1240         else {
1241                 dst = op->sym->auth.digest.data;
1242                 if (dst == NULL)
1243                         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1244                                         op->sym->auth.data.offset +
1245                                         op->sym->auth.data.length);
1246         }
1247
1248         switch (sess->auth.mode) {
1249         case OPENSSL_AUTH_AS_AUTH:
1250                 status = process_openssl_auth(mbuf_src, dst,
1251                                 op->sym->auth.data.offset, NULL, NULL, srclen,
1252                                 sess->auth.auth.ctx, sess->auth.auth.evp_algo);
1253                 break;
1254         case OPENSSL_AUTH_AS_HMAC:
1255                 status = process_openssl_auth_hmac(mbuf_src, dst,
1256                                 op->sym->auth.data.offset, NULL,
1257                                 sess->auth.hmac.pkey, srclen,
1258                                 sess->auth.hmac.ctx, sess->auth.hmac.evp_algo);
1259                 break;
1260         default:
1261                 status = -1;
1262                 break;
1263         }
1264
1265         if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
1266                 if (memcmp(dst, op->sym->auth.digest.data,
1267                                 sess->auth.digest_length) != 0) {
1268                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
1269                 }
1270                 /* Trim area used for digest from mbuf. */
1271                 rte_pktmbuf_trim(mbuf_src, sess->auth.digest_length);
1272         }
1273
1274         if (status != 0)
1275                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1276 }
1277
1278 /** Process crypto operation for mbuf */
1279 static int
1280 process_op(const struct openssl_qp *qp, struct rte_crypto_op *op,
1281                 struct openssl_session *sess)
1282 {
1283         struct rte_mbuf *msrc, *mdst;
1284         int retval;
1285
1286         msrc = op->sym->m_src;
1287         mdst = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
1288
1289         op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
1290
1291         switch (sess->chain_order) {
1292         case OPENSSL_CHAIN_ONLY_CIPHER:
1293                 process_openssl_cipher_op(op, sess, msrc, mdst);
1294                 break;
1295         case OPENSSL_CHAIN_ONLY_AUTH:
1296                 process_openssl_auth_op(op, sess, msrc, mdst);
1297                 break;
1298         case OPENSSL_CHAIN_CIPHER_AUTH:
1299                 process_openssl_cipher_op(op, sess, msrc, mdst);
1300                 process_openssl_auth_op(op, sess, mdst, mdst);
1301                 break;
1302         case OPENSSL_CHAIN_AUTH_CIPHER:
1303                 process_openssl_auth_op(op, sess, msrc, mdst);
1304                 process_openssl_cipher_op(op, sess, msrc, mdst);
1305                 break;
1306         case OPENSSL_CHAIN_COMBINED:
1307                 process_openssl_combined_op(op, sess, msrc, mdst);
1308                 break;
1309         case OPENSSL_CHAIN_CIPHER_BPI:
1310                 process_openssl_docsis_bpi_op(op, sess, msrc, mdst);
1311                 break;
1312         default:
1313                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1314                 break;
1315         }
1316
1317         /* Free session if a session-less crypto op */
1318         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
1319                 openssl_reset_session(sess);
1320                 memset(sess, 0, sizeof(struct openssl_session));
1321                 rte_mempool_put(qp->sess_mp, op->sym->session);
1322                 op->sym->session = NULL;
1323         }
1324
1325         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
1326                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
1327
1328         if (op->status != RTE_CRYPTO_OP_STATUS_ERROR)
1329                 retval = rte_ring_enqueue(qp->processed_ops, (void *)op);
1330         else
1331                 retval = -1;
1332
1333         return retval;
1334 }
1335
1336 /*
1337  *------------------------------------------------------------------------------
1338  * PMD Framework
1339  *------------------------------------------------------------------------------
1340  */
1341
1342 /** Enqueue burst */
1343 static uint16_t
1344 openssl_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
1345                 uint16_t nb_ops)
1346 {
1347         struct openssl_session *sess;
1348         struct openssl_qp *qp = queue_pair;
1349         int i, retval;
1350
1351         for (i = 0; i < nb_ops; i++) {
1352                 sess = get_session(qp, ops[i]);
1353                 if (unlikely(sess == NULL))
1354                         goto enqueue_err;
1355
1356                 retval = process_op(qp, ops[i], sess);
1357                 if (unlikely(retval < 0))
1358                         goto enqueue_err;
1359         }
1360
1361         qp->stats.enqueued_count += i;
1362         return i;
1363
1364 enqueue_err:
1365         qp->stats.enqueue_err_count++;
1366         return i;
1367 }
1368
1369 /** Dequeue burst */
1370 static uint16_t
1371 openssl_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
1372                 uint16_t nb_ops)
1373 {
1374         struct openssl_qp *qp = queue_pair;
1375
1376         unsigned int nb_dequeued = 0;
1377
1378         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
1379                         (void **)ops, nb_ops, NULL);
1380         qp->stats.dequeued_count += nb_dequeued;
1381
1382         return nb_dequeued;
1383 }
1384
1385 /** Create OPENSSL crypto device */
1386 static int
1387 cryptodev_openssl_create(const char *name,
1388                         struct rte_vdev_device *vdev,
1389                         struct rte_crypto_vdev_init_params *init_params)
1390 {
1391         struct rte_cryptodev *dev;
1392         struct openssl_private *internals;
1393
1394         if (init_params->name[0] == '\0')
1395                 snprintf(init_params->name, sizeof(init_params->name),
1396                                 "%s", name);
1397
1398         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
1399                         sizeof(struct openssl_private),
1400                         init_params->socket_id,
1401                         vdev);
1402         if (dev == NULL) {
1403                 OPENSSL_LOG_ERR("failed to create cryptodev vdev");
1404                 goto init_error;
1405         }
1406
1407         dev->driver_id = cryptodev_driver_id;
1408         dev->dev_ops = rte_openssl_pmd_ops;
1409
1410         /* register rx/tx burst functions for data path */
1411         dev->dequeue_burst = openssl_pmd_dequeue_burst;
1412         dev->enqueue_burst = openssl_pmd_enqueue_burst;
1413
1414         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
1415                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
1416                         RTE_CRYPTODEV_FF_CPU_AESNI |
1417                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
1418
1419         /* Set vector instructions mode supported */
1420         internals = dev->data->dev_private;
1421
1422         internals->max_nb_qpairs = init_params->max_nb_queue_pairs;
1423         internals->max_nb_sessions = init_params->max_nb_sessions;
1424
1425         return 0;
1426
1427 init_error:
1428         OPENSSL_LOG_ERR("driver %s: cryptodev_openssl_create failed",
1429                         init_params->name);
1430
1431         cryptodev_openssl_remove(vdev);
1432         return -EFAULT;
1433 }
1434
1435 /** Initialise OPENSSL crypto device */
1436 static int
1437 cryptodev_openssl_probe(struct rte_vdev_device *vdev)
1438 {
1439         struct rte_crypto_vdev_init_params init_params = {
1440                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
1441                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
1442                 rte_socket_id(),
1443                 {0}
1444         };
1445         const char *name;
1446         const char *input_args;
1447
1448         name = rte_vdev_device_name(vdev);
1449         if (name == NULL)
1450                 return -EINVAL;
1451         input_args = rte_vdev_device_args(vdev);
1452
1453         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
1454
1455         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
1456                         init_params.socket_id);
1457         if (init_params.name[0] != '\0')
1458                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
1459                         init_params.name);
1460         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
1461                         init_params.max_nb_queue_pairs);
1462         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
1463                         init_params.max_nb_sessions);
1464
1465         return cryptodev_openssl_create(name, vdev, &init_params);
1466 }
1467
1468 /** Uninitialise OPENSSL crypto device */
1469 static int
1470 cryptodev_openssl_remove(struct rte_vdev_device *vdev)
1471 {
1472         const char *name;
1473
1474         name = rte_vdev_device_name(vdev);
1475         if (name == NULL)
1476                 return -EINVAL;
1477
1478         RTE_LOG(INFO, PMD,
1479                 "Closing OPENSSL crypto device %s on numa socket %u\n",
1480                 name, rte_socket_id());
1481
1482         return 0;
1483 }
1484
1485 static struct rte_vdev_driver cryptodev_openssl_pmd_drv = {
1486         .probe = cryptodev_openssl_probe,
1487         .remove = cryptodev_openssl_remove
1488 };
1489
1490 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_OPENSSL_PMD,
1491         cryptodev_openssl_pmd_drv);
1492 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_OPENSSL_PMD,
1493         "max_nb_queue_pairs=<int> "
1494         "max_nb_sessions=<int> "
1495         "socket_id=<int>");
1496 RTE_PMD_REGISTER_CRYPTO_DRIVER(cryptodev_openssl_pmd_drv, cryptodev_driver_id);