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                                 op->sym->session->driver_id ==
 563                                 cryptodev_driver_id))
 564                         sess = (struct openssl_session *)
 565                                 op->sym->session->_private;
 566         } else  {
 567                 /* provide internal session */
 568                 void *_sess = NULL;
 569
 570                 if (!rte_mempool_get(qp->sess_mp, (void **)&_sess)) {
 571                         sess = (struct openssl_session *)
 572                                 ((struct rte_cryptodev_sym_session *)_sess)
 573                                 ->_private;
 574
 575                         if (unlikely(openssl_set_session_parameters(
 576                                         sess, op->sym->xform) != 0)) {
 577                                 rte_mempool_put(qp->sess_mp, _sess);
 578                                 sess = NULL;
 579                         } else
 580                                 op->sym->session = _sess;
 581                 }
 582         }
 583
 584         if (sess == NULL)
 585                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 586
 587         return sess;
 588 }
 589
 590 /*
 591  *------------------------------------------------------------------------------
 592  * Process Operations
 593  *------------------------------------------------------------------------------
 594  */
 595 static inline int
 596 process_openssl_encryption_update(struct rte_mbuf *mbuf_src, int offset,
 597                 uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx)
 598 {
 599         struct rte_mbuf *m;
 600         int dstlen;
 601         int l, n = srclen;
 602         uint8_t *src;
 603
 604         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 605                         m = m->next)
 606                 offset -= rte_pktmbuf_data_len(m);
 607
 608         if (m == 0)
 609                 return -1;
 610
 611         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 612
 613         l = rte_pktmbuf_data_len(m) - offset;
 614         if (srclen <= l) {
 615                 if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
 616                         return -1;
 617                 *dst += l;
 618                 return 0;
 619         }
 620
 621         if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 622                 return -1;
 623
 624         *dst += dstlen;
 625         n -= l;
 626
 627         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 628                 src = rte_pktmbuf_mtod(m, uint8_t *);
 629                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 630                 if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 631                         return -1;
 632                 *dst += dstlen;
 633                 n -= l;
 634         }
 635
 636         return 0;
 637 }
 638
 639 static inline int
 640 process_openssl_decryption_update(struct rte_mbuf *mbuf_src, int offset,
 641                 uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx)
 642 {
 643         struct rte_mbuf *m;
 644         int dstlen;
 645         int l, n = srclen;
 646         uint8_t *src;
 647
 648         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 649                         m = m->next)
 650                 offset -= rte_pktmbuf_data_len(m);
 651
 652         if (m == 0)
 653                 return -1;
 654
 655         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 656
 657         l = rte_pktmbuf_data_len(m) - offset;
 658         if (srclen <= l) {
 659                 if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
 660                         return -1;
 661                 *dst += l;
 662                 return 0;
 663         }
 664
 665         if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 666                 return -1;
 667
 668         *dst += dstlen;
 669         n -= l;
 670
 671         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 672                 src = rte_pktmbuf_mtod(m, uint8_t *);
 673                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 674                 if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 675                         return -1;
 676                 *dst += dstlen;
 677                 n -= l;
 678         }
 679
 680         return 0;
 681 }
 682
 683 /** Process standard openssl cipher encryption */
 684 static int
 685 process_openssl_cipher_encrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
 686                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 687                 EVP_CIPHER_CTX *ctx, const EVP_CIPHER *algo)
 688 {
 689         int totlen;
 690
 691         if (EVP_EncryptInit_ex(ctx, algo, NULL, key, iv) <= 0)
 692                 goto process_cipher_encrypt_err;
 693
 694         EVP_CIPHER_CTX_set_padding(ctx, 0);
 695
 696         if (process_openssl_encryption_update(mbuf_src, offset, &dst,
 697                         srclen, ctx))
 698                 goto process_cipher_encrypt_err;
 699
 700         if (EVP_EncryptFinal_ex(ctx, dst, &totlen) <= 0)
 701                 goto process_cipher_encrypt_err;
 702
 703         return 0;
 704
 705 process_cipher_encrypt_err:
 706         OPENSSL_LOG_ERR("Process openssl cipher encrypt failed");
 707         return -EINVAL;
 708 }
 709
 710 /** Process standard openssl cipher encryption */
 711 static int
 712 process_openssl_cipher_bpi_encrypt(uint8_t *src, uint8_t *dst,
 713                 uint8_t *iv, int srclen,
 714                 EVP_CIPHER_CTX *ctx)
 715 {
 716         uint8_t i;
 717         uint8_t encrypted_iv[DES_BLOCK_SIZE];
 718         int encrypted_ivlen;
 719
 720         if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen,
 721                         iv, DES_BLOCK_SIZE) <= 0)
 722                 goto process_cipher_encrypt_err;
 723
 724         for (i = 0; i < srclen; i++)
 725                 *(dst + i) = *(src + i) ^ (encrypted_iv[i]);
 726
 727         return 0;
 728
 729 process_cipher_encrypt_err:
 730         OPENSSL_LOG_ERR("Process openssl cipher bpi encrypt failed");
 731         return -EINVAL;
 732 }
 733 /** Process standard openssl cipher decryption */
 734 static int
 735 process_openssl_cipher_decrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
 736                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 737                 EVP_CIPHER_CTX *ctx, const EVP_CIPHER *algo)
 738 {
 739         int totlen;
 740
 741         if (EVP_DecryptInit_ex(ctx, algo, NULL, key, iv) <= 0)
 742                 goto process_cipher_decrypt_err;
 743
 744         EVP_CIPHER_CTX_set_padding(ctx, 0);
 745
 746         if (process_openssl_decryption_update(mbuf_src, offset, &dst,
 747                         srclen, ctx))
 748                 goto process_cipher_decrypt_err;
 749
 750         if (EVP_DecryptFinal_ex(ctx, dst, &totlen) <= 0)
 751                 goto process_cipher_decrypt_err;
 752         return 0;
 753
 754 process_cipher_decrypt_err:
 755         OPENSSL_LOG_ERR("Process openssl cipher decrypt failed");
 756         return -EINVAL;
 757 }
 758
 759 /** Process cipher des 3 ctr encryption, decryption algorithm */
 760 static int
 761 process_openssl_cipher_des3ctr(struct rte_mbuf *mbuf_src, uint8_t *dst,
 762                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 763                 EVP_CIPHER_CTX *ctx)
 764 {
 765         uint8_t ebuf[8], ctr[8];
 766         int unused, n;
 767         struct rte_mbuf *m;
 768         uint8_t *src;
 769         int l;
 770
 771         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 772                         m = m->next)
 773                 offset -= rte_pktmbuf_data_len(m);
 774
 775         if (m == 0)
 776                 goto process_cipher_des3ctr_err;
 777
 778         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 779         l = rte_pktmbuf_data_len(m) - offset;
 780
 781         /* We use 3DES encryption also for decryption.
 782          * IV is not important for 3DES ecb
 783          */
 784         if (EVP_EncryptInit_ex(ctx, EVP_des_ede3_ecb(), NULL, key, NULL) <= 0)
 785                 goto process_cipher_des3ctr_err;
 786
 787         memcpy(ctr, iv, 8);
 788
 789         for (n = 0; n < srclen; n++) {
 790                 if (n % 8 == 0) {
 791                         if (EVP_EncryptUpdate(ctx,
 792                                         (unsigned char *)&ebuf, &unused,
 793                                         (const unsigned char *)&ctr, 8) <= 0)
 794                                 goto process_cipher_des3ctr_err;
 795                         ctr_inc(ctr);
 796                 }
 797                 dst[n] = *(src++) ^ ebuf[n % 8];
 798
 799                 l--;
 800                 if (!l) {
 801                         m = m->next;
 802                         if (m) {
 803                                 src = rte_pktmbuf_mtod(m, uint8_t *);
 804                                 l = rte_pktmbuf_data_len(m);
 805                         }
 806                 }
 807         }
 808
 809         return 0;
 810
 811 process_cipher_des3ctr_err:
 812         OPENSSL_LOG_ERR("Process openssl cipher des 3 ede ctr failed");
 813         return -EINVAL;
 814 }
 815
 816 /** Process auth/encription aes-gcm algorithm */
 817 static int
 818 process_openssl_auth_encryption_gcm(struct rte_mbuf *mbuf_src, int offset,
 819                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv, int ivlen,
 820                 uint8_t *key, uint8_t *dst, uint8_t *tag,
 821                 EVP_CIPHER_CTX *ctx, const EVP_CIPHER *algo)
 822 {
 823         int len = 0, unused = 0;
 824         uint8_t empty[] = {};
 825
 826         if (EVP_EncryptInit_ex(ctx, algo, NULL, NULL, NULL) <= 0)
 827                 goto process_auth_encryption_gcm_err;
 828
 829         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, ivlen, NULL) <= 0)
 830                 goto process_auth_encryption_gcm_err;
 831
 832         if (EVP_EncryptInit_ex(ctx, NULL, NULL, key, iv) <= 0)
 833                 goto process_auth_encryption_gcm_err;
 834
 835         if (aadlen > 0)
 836                 if (EVP_EncryptUpdate(ctx, NULL, &len, aad, aadlen) <= 0)
 837                         goto process_auth_encryption_gcm_err;
 838
 839         if (srclen > 0)
 840                 if (process_openssl_encryption_update(mbuf_src, offset, &dst,
 841                                 srclen, ctx))
 842                         goto process_auth_encryption_gcm_err;
 843
 844         /* Workaround open ssl bug in version less then 1.0.1f */
 845         if (EVP_EncryptUpdate(ctx, empty, &unused, empty, 0) <= 0)
 846                 goto process_auth_encryption_gcm_err;
 847
 848         if (EVP_EncryptFinal_ex(ctx, dst, &len) <= 0)
 849                 goto process_auth_encryption_gcm_err;
 850
 851         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, 16, tag) <= 0)
 852                 goto process_auth_encryption_gcm_err;
 853
 854         return 0;
 855
 856 process_auth_encryption_gcm_err:
 857         OPENSSL_LOG_ERR("Process openssl auth encryption gcm failed");
 858         return -EINVAL;
 859 }
 860
 861 static int
 862 process_openssl_auth_decryption_gcm(struct rte_mbuf *mbuf_src, int offset,
 863                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv, int ivlen,
 864                 uint8_t *key, uint8_t *dst, uint8_t *tag, EVP_CIPHER_CTX *ctx,
 865                 const EVP_CIPHER *algo)
 866 {
 867         int len = 0, unused = 0;
 868         uint8_t empty[] = {};
 869
 870         if (EVP_DecryptInit_ex(ctx, algo, NULL, NULL, NULL) <= 0)
 871                 goto process_auth_decryption_gcm_err;
 872
 873         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, ivlen, NULL) <= 0)
 874                 goto process_auth_decryption_gcm_err;
 875
 876         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, 16, tag) <= 0)
 877                 goto process_auth_decryption_gcm_err;
 878
 879         if (EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv) <= 0)
 880                 goto process_auth_decryption_gcm_err;
 881
 882         if (aadlen > 0)
 883                 if (EVP_DecryptUpdate(ctx, NULL, &len, aad, aadlen) <= 0)
 884                         goto process_auth_decryption_gcm_err;
 885
 886         if (srclen > 0)
 887                 if (process_openssl_decryption_update(mbuf_src, offset, &dst,
 888                                 srclen, ctx))
 889                         goto process_auth_decryption_gcm_err;
 890
 891         /* Workaround open ssl bug in version less then 1.0.1f */
 892         if (EVP_DecryptUpdate(ctx, empty, &unused, empty, 0) <= 0)
 893                 goto process_auth_decryption_gcm_err;
 894
 895         if (EVP_DecryptFinal_ex(ctx, dst, &len) <= 0)
 896                 goto process_auth_decryption_gcm_final_err;
 897
 898         return 0;
 899
 900 process_auth_decryption_gcm_err:
 901         OPENSSL_LOG_ERR("Process openssl auth description gcm failed");
 902         return -EINVAL;
 903
 904 process_auth_decryption_gcm_final_err:
 905         return -EFAULT;
 906 }
 907
 908 /** Process standard openssl auth algorithms */
 909 static int
 910 process_openssl_auth(struct rte_mbuf *mbuf_src, uint8_t *dst, int offset,
 911                 __rte_unused uint8_t *iv, __rte_unused EVP_PKEY * pkey,
 912                 int srclen, EVP_MD_CTX *ctx, const EVP_MD *algo)
 913 {
 914         size_t dstlen;
 915         struct rte_mbuf *m;
 916         int l, n = srclen;
 917         uint8_t *src;
 918
 919         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 920                         m = m->next)
 921                 offset -= rte_pktmbuf_data_len(m);
 922
 923         if (m == 0)
 924                 goto process_auth_err;
 925
 926         if (EVP_DigestInit_ex(ctx, algo, NULL) <= 0)
 927                 goto process_auth_err;
 928
 929         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 930
 931         l = rte_pktmbuf_data_len(m) - offset;
 932         if (srclen <= l) {
 933                 if (EVP_DigestUpdate(ctx, (char *)src, srclen) <= 0)
 934                         goto process_auth_err;
 935                 goto process_auth_final;
 936         }
 937
 938         if (EVP_DigestUpdate(ctx, (char *)src, l) <= 0)
 939                 goto process_auth_err;
 940
 941         n -= l;
 942
 943         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 944                 src = rte_pktmbuf_mtod(m, uint8_t *);
 945                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 946                 if (EVP_DigestUpdate(ctx, (char *)src, l) <= 0)
 947                         goto process_auth_err;
 948                 n -= l;
 949         }
 950
 951 process_auth_final:
 952         if (EVP_DigestFinal_ex(ctx, dst, (unsigned int *)&dstlen) <= 0)
 953                 goto process_auth_err;
 954         return 0;
 955
 956 process_auth_err:
 957         OPENSSL_LOG_ERR("Process openssl auth failed");
 958         return -EINVAL;
 959 }
 960
 961 /** Process standard openssl auth algorithms with hmac */
 962 static int
 963 process_openssl_auth_hmac(struct rte_mbuf *mbuf_src, uint8_t *dst, int offset,
 964                 __rte_unused uint8_t *iv, EVP_PKEY *pkey,
 965                 int srclen, EVP_MD_CTX *ctx, const EVP_MD *algo)
 966 {
 967         size_t dstlen;
 968         struct rte_mbuf *m;
 969         int l, n = srclen;
 970         uint8_t *src;
 971
 972         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 973                         m = m->next)
 974                 offset -= rte_pktmbuf_data_len(m);
 975
 976         if (m == 0)
 977                 goto process_auth_err;
 978
 979         if (EVP_DigestSignInit(ctx, NULL, algo, NULL, pkey) <= 0)
 980                 goto process_auth_err;
 981
 982         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 983
 984         l = rte_pktmbuf_data_len(m) - offset;
 985         if (srclen <= l) {
 986                 if (EVP_DigestSignUpdate(ctx, (char *)src, srclen) <= 0)
 987                         goto process_auth_err;
 988                 goto process_auth_final;
 989         }
 990
 991         if (EVP_DigestSignUpdate(ctx, (char *)src, l) <= 0)
 992                 goto process_auth_err;
 993
 994         n -= l;
 995
 996         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 997                 src = rte_pktmbuf_mtod(m, uint8_t *);
 998                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 999                 if (EVP_DigestSignUpdate(ctx, (char *)src, l) <= 0)
1000                         goto process_auth_err;
1001                 n -= l;
1002         }
1003
1004 process_auth_final:
1005         if (EVP_DigestSignFinal(ctx, dst, &dstlen) <= 0)
1006                 goto process_auth_err;
1007
1008         return 0;
1009
1010 process_auth_err:
1011         OPENSSL_LOG_ERR("Process openssl auth failed");
1012         return -EINVAL;
1013 }
1014
1015 /*----------------------------------------------------------------------------*/
1016
1017 /** Process auth/cipher combined operation */
1018 static void
1019 process_openssl_combined_op
1020                 (struct rte_crypto_op *op, struct openssl_session *sess,
1021                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1022 {
1023         /* cipher */
1024         uint8_t *dst = NULL, *iv, *tag, *aad;
1025         int srclen, ivlen, aadlen, status = -1;
1026         uint32_t offset;
1027
1028         /*
1029          * Segmented destination buffer is not supported for
1030          * encryption/decryption
1031          */
1032         if (!rte_pktmbuf_is_contiguous(mbuf_dst)) {
1033                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1034                 return;
1035         }
1036
1037         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1038                         sess->iv.offset);
1039         ivlen = sess->iv.length;
1040         if (sess->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC) {
1041                 srclen = 0;
1042                 offset = op->sym->auth.data.offset;
1043                 aadlen = op->sym->auth.data.length;
1044                 aad = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
1045                                 op->sym->auth.data.offset);
1046                 tag = op->sym->auth.digest.data;
1047                 if (tag == NULL)
1048                         tag = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1049                                 offset + aadlen);
1050         } else {
1051                 srclen = op->sym->aead.data.length;
1052                 dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1053                                 op->sym->aead.data.offset);
1054                 offset = op->sym->aead.data.offset;
1055                 aad = op->sym->aead.aad.data;
1056                 aadlen = sess->auth.aad_length;
1057                 tag = op->sym->aead.digest.data;
1058                 if (tag == NULL)
1059                         tag = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1060                                 offset + srclen);
1061         }
1062
1063         if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
1064                 status = process_openssl_auth_encryption_gcm(
1065                                 mbuf_src, offset, srclen,
1066                                 aad, aadlen, iv, ivlen, sess->cipher.key.data,
1067                                 dst, tag, sess->cipher.ctx,
1068                                 sess->cipher.evp_algo);
1069         else
1070                 status = process_openssl_auth_decryption_gcm(
1071                                 mbuf_src, offset, srclen,
1072                                 aad, aadlen, iv, ivlen, sess->cipher.key.data,
1073                                 dst, tag, sess->cipher.ctx,
1074                                 sess->cipher.evp_algo);
1075
1076         if (status != 0) {
1077                 if (status == (-EFAULT) &&
1078                                 sess->auth.operation ==
1079                                                 RTE_CRYPTO_AUTH_OP_VERIFY)
1080                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
1081                 else
1082                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1083         }
1084 }
1085
1086 /** Process cipher operation */
1087 static void
1088 process_openssl_cipher_op
1089                 (struct rte_crypto_op *op, struct openssl_session *sess,
1090                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1091 {
1092         uint8_t *dst, *iv;
1093         int srclen, status;
1094
1095         /*
1096          * Segmented destination buffer is not supported for
1097          * encryption/decryption
1098          */
1099         if (!rte_pktmbuf_is_contiguous(mbuf_dst)) {
1100                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1101                 return;
1102         }
1103
1104         srclen = op->sym->cipher.data.length;
1105         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1106                         op->sym->cipher.data.offset);
1107
1108         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1109                         sess->iv.offset);
1110
1111         if (sess->cipher.mode == OPENSSL_CIPHER_LIB)
1112                 if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
1113                         status = process_openssl_cipher_encrypt(mbuf_src, dst,
1114                                         op->sym->cipher.data.offset, iv,
1115                                         sess->cipher.key.data, srclen,
1116                                         sess->cipher.ctx,
1117                                         sess->cipher.evp_algo);
1118                 else
1119                         status = process_openssl_cipher_decrypt(mbuf_src, dst,
1120                                         op->sym->cipher.data.offset, iv,
1121                                         sess->cipher.key.data, srclen,
1122                                         sess->cipher.ctx,
1123                                         sess->cipher.evp_algo);
1124         else
1125                 status = process_openssl_cipher_des3ctr(mbuf_src, dst,
1126                                 op->sym->cipher.data.offset, iv,
1127                                 sess->cipher.key.data, srclen,
1128                                 sess->cipher.ctx);
1129
1130         if (status != 0)
1131                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1132 }
1133
1134 /** Process cipher operation */
1135 static void
1136 process_openssl_docsis_bpi_op(struct rte_crypto_op *op,
1137                 struct openssl_session *sess, struct rte_mbuf *mbuf_src,
1138                 struct rte_mbuf *mbuf_dst)
1139 {
1140         uint8_t *src, *dst, *iv;
1141         uint8_t block_size, last_block_len;
1142         int srclen, status = 0;
1143
1144         srclen = op->sym->cipher.data.length;
1145         src = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
1146                         op->sym->cipher.data.offset);
1147         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1148                         op->sym->cipher.data.offset);
1149
1150         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1151                         sess->iv.offset);
1152
1153         block_size = DES_BLOCK_SIZE;
1154
1155         last_block_len = srclen % block_size;
1156         if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
1157                 /* Encrypt only with ECB mode XOR IV */
1158                 if (srclen < block_size) {
1159                         status = process_openssl_cipher_bpi_encrypt(src, dst,
1160                                         iv, srclen,
1161                                         sess->cipher.bpi_ctx);
1162                 } else {
1163                         srclen -= last_block_len;
1164                         /* Encrypt with the block aligned stream with CBC mode */
1165                         status = process_openssl_cipher_encrypt(mbuf_src, dst,
1166                                         op->sym->cipher.data.offset, iv,
1167                                         sess->cipher.key.data, srclen,
1168                                         sess->cipher.ctx, sess->cipher.evp_algo);
1169                         if (last_block_len) {
1170                                 /* Point at last block */
1171                                 dst += srclen;
1172                                 /*
1173                                  * IV is the last encrypted block from
1174                                  * the previous operation
1175                                  */
1176                                 iv = dst - block_size;
1177                                 src += srclen;
1178                                 srclen = last_block_len;
1179                                 /* Encrypt the last frame with ECB mode */
1180                                 status |= process_openssl_cipher_bpi_encrypt(src,
1181                                                 dst, iv,
1182                                                 srclen, sess->cipher.bpi_ctx);
1183                         }
1184                 }
1185         } else {
1186                 /* Decrypt only with ECB mode (encrypt, as it is same operation) */
1187                 if (srclen < block_size) {
1188                         status = process_openssl_cipher_bpi_encrypt(src, dst,
1189                                         iv,
1190                                         srclen,
1191                                         sess->cipher.bpi_ctx);
1192                 } else {
1193                         if (last_block_len) {
1194                                 /* Point at last block */
1195                                 dst += srclen - last_block_len;
1196                                 src += srclen - last_block_len;
1197                                 /*
1198                                  * IV is the last full block
1199                                  */
1200                                 iv = src - block_size;
1201                                 /*
1202                                  * Decrypt the last frame with ECB mode
1203                                  * (encrypt, as it is the same operation)
1204                                  */
1205                                 status = process_openssl_cipher_bpi_encrypt(src,
1206                                                 dst, iv,
1207                                                 last_block_len, sess->cipher.bpi_ctx);
1208                                 /* Prepare parameters for CBC mode op */
1209                                 iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1210                                                 sess->iv.offset);
1211                                 dst += last_block_len - srclen;
1212                                 srclen -= last_block_len;
1213                         }
1214
1215                         /* Decrypt with CBC mode */
1216                         status |= process_openssl_cipher_decrypt(mbuf_src, dst,
1217                                         op->sym->cipher.data.offset, iv,
1218                                         sess->cipher.key.data, srclen,
1219                                         sess->cipher.ctx,
1220                                         sess->cipher.evp_algo);
1221                 }
1222         }
1223
1224         if (status != 0)
1225                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1226 }
1227
1228 /** Process auth operation */
1229 static void
1230 process_openssl_auth_op
1231                 (struct rte_crypto_op *op, struct openssl_session *sess,
1232                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1233 {
1234         uint8_t *dst;
1235         int srclen, status;
1236
1237         srclen = op->sym->auth.data.length;
1238
1239         if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY)
1240                 dst = (uint8_t *)rte_pktmbuf_append(mbuf_src,
1241                                 sess->auth.digest_length);
1242         else {
1243                 dst = op->sym->auth.digest.data;
1244                 if (dst == NULL)
1245                         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1246                                         op->sym->auth.data.offset +
1247                                         op->sym->auth.data.length);
1248         }
1249
1250         switch (sess->auth.mode) {
1251         case OPENSSL_AUTH_AS_AUTH:
1252                 status = process_openssl_auth(mbuf_src, dst,
1253                                 op->sym->auth.data.offset, NULL, NULL, srclen,
1254                                 sess->auth.auth.ctx, sess->auth.auth.evp_algo);
1255                 break;
1256         case OPENSSL_AUTH_AS_HMAC:
1257                 status = process_openssl_auth_hmac(mbuf_src, dst,
1258                                 op->sym->auth.data.offset, NULL,
1259                                 sess->auth.hmac.pkey, srclen,
1260                                 sess->auth.hmac.ctx, sess->auth.hmac.evp_algo);
1261                 break;
1262         default:
1263                 status = -1;
1264                 break;
1265         }
1266
1267         if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
1268                 if (memcmp(dst, op->sym->auth.digest.data,
1269                                 sess->auth.digest_length) != 0) {
1270                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
1271                 }
1272                 /* Trim area used for digest from mbuf. */
1273                 rte_pktmbuf_trim(mbuf_src, sess->auth.digest_length);
1274         }
1275
1276         if (status != 0)
1277                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1278 }
1279
1280 /** Process crypto operation for mbuf */
1281 static int
1282 process_op(const struct openssl_qp *qp, struct rte_crypto_op *op,
1283                 struct openssl_session *sess)
1284 {
1285         struct rte_mbuf *msrc, *mdst;
1286         int retval;
1287
1288         msrc = op->sym->m_src;
1289         mdst = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
1290
1291         op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
1292
1293         switch (sess->chain_order) {
1294         case OPENSSL_CHAIN_ONLY_CIPHER:
1295                 process_openssl_cipher_op(op, sess, msrc, mdst);
1296                 break;
1297         case OPENSSL_CHAIN_ONLY_AUTH:
1298                 process_openssl_auth_op(op, sess, msrc, mdst);
1299                 break;
1300         case OPENSSL_CHAIN_CIPHER_AUTH:
1301                 process_openssl_cipher_op(op, sess, msrc, mdst);
1302                 process_openssl_auth_op(op, sess, mdst, mdst);
1303                 break;
1304         case OPENSSL_CHAIN_AUTH_CIPHER:
1305                 process_openssl_auth_op(op, sess, msrc, mdst);
1306                 process_openssl_cipher_op(op, sess, msrc, mdst);
1307                 break;
1308         case OPENSSL_CHAIN_COMBINED:
1309                 process_openssl_combined_op(op, sess, msrc, mdst);
1310                 break;
1311         case OPENSSL_CHAIN_CIPHER_BPI:
1312                 process_openssl_docsis_bpi_op(op, sess, msrc, mdst);
1313                 break;
1314         default:
1315                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1316                 break;
1317         }
1318
1319         /* Free session if a session-less crypto op */
1320         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
1321                 openssl_reset_session(sess);
1322                 memset(sess, 0, sizeof(struct openssl_session));
1323                 rte_mempool_put(qp->sess_mp, op->sym->session);
1324                 op->sym->session = NULL;
1325         }
1326
1327         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
1328                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
1329
1330         if (op->status != RTE_CRYPTO_OP_STATUS_ERROR)
1331                 retval = rte_ring_enqueue(qp->processed_ops, (void *)op);
1332         else
1333                 retval = -1;
1334
1335         return retval;
1336 }
1337
1338 /*
1339  *------------------------------------------------------------------------------
1340  * PMD Framework
1341  *------------------------------------------------------------------------------
1342  */
1343
1344 /** Enqueue burst */
1345 static uint16_t
1346 openssl_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
1347                 uint16_t nb_ops)
1348 {
1349         struct openssl_session *sess;
1350         struct openssl_qp *qp = queue_pair;
1351         int i, retval;
1352
1353         for (i = 0; i < nb_ops; i++) {
1354                 sess = get_session(qp, ops[i]);
1355                 if (unlikely(sess == NULL))
1356                         goto enqueue_err;
1357
1358                 retval = process_op(qp, ops[i], sess);
1359                 if (unlikely(retval < 0))
1360                         goto enqueue_err;
1361         }
1362
1363         qp->stats.enqueued_count += i;
1364         return i;
1365
1366 enqueue_err:
1367         qp->stats.enqueue_err_count++;
1368         return i;
1369 }
1370
1371 /** Dequeue burst */
1372 static uint16_t
1373 openssl_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
1374                 uint16_t nb_ops)
1375 {
1376         struct openssl_qp *qp = queue_pair;
1377
1378         unsigned int nb_dequeued = 0;
1379
1380         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
1381                         (void **)ops, nb_ops, NULL);
1382         qp->stats.dequeued_count += nb_dequeued;
1383
1384         return nb_dequeued;
1385 }
1386
1387 /** Create OPENSSL crypto device */
1388 static int
1389 cryptodev_openssl_create(const char *name,
1390                         struct rte_vdev_device *vdev,
1391                         struct rte_crypto_vdev_init_params *init_params)
1392 {
1393         struct rte_cryptodev *dev;
1394         struct openssl_private *internals;
1395
1396         if (init_params->name[0] == '\0')
1397                 snprintf(init_params->name, sizeof(init_params->name),
1398                                 "%s", name);
1399
1400         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
1401                         sizeof(struct openssl_private),
1402                         init_params->socket_id,
1403                         vdev);
1404         if (dev == NULL) {
1405                 OPENSSL_LOG_ERR("failed to create cryptodev vdev");
1406                 goto init_error;
1407         }
1408
1409         dev->driver_id = cryptodev_driver_id;
1410         dev->dev_ops = rte_openssl_pmd_ops;
1411
1412         /* register rx/tx burst functions for data path */
1413         dev->dequeue_burst = openssl_pmd_dequeue_burst;
1414         dev->enqueue_burst = openssl_pmd_enqueue_burst;
1415
1416         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
1417                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
1418                         RTE_CRYPTODEV_FF_CPU_AESNI |
1419                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
1420
1421         /* Set vector instructions mode supported */
1422         internals = dev->data->dev_private;
1423
1424         internals->max_nb_qpairs = init_params->max_nb_queue_pairs;
1425         internals->max_nb_sessions = init_params->max_nb_sessions;
1426
1427         return 0;
1428
1429 init_error:
1430         OPENSSL_LOG_ERR("driver %s: cryptodev_openssl_create failed",
1431                         init_params->name);
1432
1433         cryptodev_openssl_remove(vdev);
1434         return -EFAULT;
1435 }
1436
1437 /** Initialise OPENSSL crypto device */
1438 static int
1439 cryptodev_openssl_probe(struct rte_vdev_device *vdev)
1440 {
1441         struct rte_crypto_vdev_init_params init_params = {
1442                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
1443                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
1444                 rte_socket_id(),
1445                 {0}
1446         };
1447         const char *name;
1448         const char *input_args;
1449
1450         name = rte_vdev_device_name(vdev);
1451         if (name == NULL)
1452                 return -EINVAL;
1453         input_args = rte_vdev_device_args(vdev);
1454
1455         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
1456
1457         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
1458                         init_params.socket_id);
1459         if (init_params.name[0] != '\0')
1460                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
1461                         init_params.name);
1462         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
1463                         init_params.max_nb_queue_pairs);
1464         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
1465                         init_params.max_nb_sessions);
1466
1467         return cryptodev_openssl_create(name, vdev, &init_params);
1468 }
1469
1470 /** Uninitialise OPENSSL crypto device */
1471 static int
1472 cryptodev_openssl_remove(struct rte_vdev_device *vdev)
1473 {
1474         const char *name;
1475
1476         name = rte_vdev_device_name(vdev);
1477         if (name == NULL)
1478                 return -EINVAL;
1479
1480         RTE_LOG(INFO, PMD,
1481                 "Closing OPENSSL crypto device %s on numa socket %u\n",
1482                 name, rte_socket_id());
1483
1484         return 0;
1485 }
1486
1487 static struct rte_vdev_driver cryptodev_openssl_pmd_drv = {
1488         .probe = cryptodev_openssl_probe,
1489         .remove = cryptodev_openssl_remove
1490 };
1491
1492 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_OPENSSL_PMD,
1493         cryptodev_openssl_pmd_drv);
1494 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_OPENSSL_PMD,
1495         "max_nb_queue_pairs=<int> "
1496         "max_nb_sessions=<int> "
1497         "socket_id=<int>");
1498 RTE_PMD_REGISTER_CRYPTO_DRIVER(cryptodev_openssl_pmd_drv, cryptodev_driver_id);