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 int cryptodev_openssl_remove(struct rte_vdev_device *vdev);
  49
  50 /*----------------------------------------------------------------------------*/
  51
  52 /**
  53  * Increment counter by 1
  54  * Counter is 64 bit array, big-endian
  55  */
  56 static void
  57 ctr_inc(uint8_t *ctr)
  58 {
  59         uint64_t *ctr64 = (uint64_t *)ctr;
  60
  61         *ctr64 = __builtin_bswap64(*ctr64);
  62         (*ctr64)++;
  63         *ctr64 = __builtin_bswap64(*ctr64);
  64 }
  65
  66 /*
  67  *------------------------------------------------------------------------------
  68  * Session Prepare
  69  *------------------------------------------------------------------------------
  70  */
  71
  72 /** Get xform chain order */
  73 static enum openssl_chain_order
  74 openssl_get_chain_order(const struct rte_crypto_sym_xform *xform)
  75 {
  76         enum openssl_chain_order res = OPENSSL_CHAIN_NOT_SUPPORTED;
  77
  78         if (xform != NULL) {
  79                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  80                         if (xform->next == NULL)
  81                                 res =  OPENSSL_CHAIN_ONLY_AUTH;
  82                         else if (xform->next->type ==
  83                                         RTE_CRYPTO_SYM_XFORM_CIPHER)
  84                                 res =  OPENSSL_CHAIN_AUTH_CIPHER;
  85                 }
  86                 if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  87                         if (xform->next == NULL)
  88                                 res =  OPENSSL_CHAIN_ONLY_CIPHER;
  89                         else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  90                                 res =  OPENSSL_CHAIN_CIPHER_AUTH;
  91                 }
  92                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD)
  93                         res = OPENSSL_CHAIN_COMBINED;
  94         }
  95
  96         return res;
  97 }
  98
  99 /** Get session cipher key from input cipher key */
 100 static void
 101 get_cipher_key(uint8_t *input_key, int keylen, uint8_t *session_key)
 102 {
 103         memcpy(session_key, input_key, keylen);
 104 }
 105
 106 /** Get key ede 24 bytes standard from input key */
 107 static int
 108 get_cipher_key_ede(uint8_t *key, int keylen, uint8_t *key_ede)
 109 {
 110         int res = 0;
 111
 112         /* Initialize keys - 24 bytes: [key1-key2-key3] */
 113         switch (keylen) {
 114         case 24:
 115                 memcpy(key_ede, key, 24);
 116                 break;
 117         case 16:
 118                 /* K3 = K1 */
 119                 memcpy(key_ede, key, 16);
 120                 memcpy(key_ede + 16, key, 8);
 121                 break;
 122         case 8:
 123                 /* K1 = K2 = K3 (DES compatibility) */
 124                 memcpy(key_ede, key, 8);
 125                 memcpy(key_ede + 8, key, 8);
 126                 memcpy(key_ede + 16, key, 8);
 127                 break;
 128         default:
 129                 OPENSSL_LOG_ERR("Unsupported key size");
 130                 res = -EINVAL;
 131         }
 132
 133         return res;
 134 }
 135
 136 /** Get adequate openssl function for input cipher algorithm */
 137 static uint8_t
 138 get_cipher_algo(enum rte_crypto_cipher_algorithm sess_algo, size_t keylen,
 139                 const EVP_CIPHER **algo)
 140 {
 141         int res = 0;
 142
 143         if (algo != NULL) {
 144                 switch (sess_algo) {
 145                 case RTE_CRYPTO_CIPHER_3DES_CBC:
 146                         switch (keylen) {
 147                         case 16:
 148                                 *algo = EVP_des_ede_cbc();
 149                                 break;
 150                         case 24:
 151                                 *algo = EVP_des_ede3_cbc();
 152                                 break;
 153                         default:
 154                                 res = -EINVAL;
 155                         }
 156                         break;
 157                 case RTE_CRYPTO_CIPHER_3DES_CTR:
 158                         break;
 159                 case RTE_CRYPTO_CIPHER_AES_CBC:
 160                         switch (keylen) {
 161                         case 16:
 162                                 *algo = EVP_aes_128_cbc();
 163                                 break;
 164                         case 24:
 165                                 *algo = EVP_aes_192_cbc();
 166                                 break;
 167                         case 32:
 168                                 *algo = EVP_aes_256_cbc();
 169                                 break;
 170                         default:
 171                                 res = -EINVAL;
 172                         }
 173                         break;
 174                 case RTE_CRYPTO_CIPHER_AES_CTR:
 175                         switch (keylen) {
 176                         case 16:
 177                                 *algo = EVP_aes_128_ctr();
 178                                 break;
 179                         case 24:
 180                                 *algo = EVP_aes_192_ctr();
 181                                 break;
 182                         case 32:
 183                                 *algo = EVP_aes_256_ctr();
 184                                 break;
 185                         default:
 186                                 res = -EINVAL;
 187                         }
 188                         break;
 189                 default:
 190                         res = -EINVAL;
 191                         break;
 192                 }
 193         } else {
 194                 res = -EINVAL;
 195         }
 196
 197         return res;
 198 }
 199
 200 /** Get adequate openssl function for input auth algorithm */
 201 static uint8_t
 202 get_auth_algo(enum rte_crypto_auth_algorithm sessalgo,
 203                 const EVP_MD **algo)
 204 {
 205         int res = 0;
 206
 207         if (algo != NULL) {
 208                 switch (sessalgo) {
 209                 case RTE_CRYPTO_AUTH_MD5:
 210                 case RTE_CRYPTO_AUTH_MD5_HMAC:
 211                         *algo = EVP_md5();
 212                         break;
 213                 case RTE_CRYPTO_AUTH_SHA1:
 214                 case RTE_CRYPTO_AUTH_SHA1_HMAC:
 215                         *algo = EVP_sha1();
 216                         break;
 217                 case RTE_CRYPTO_AUTH_SHA224:
 218                 case RTE_CRYPTO_AUTH_SHA224_HMAC:
 219                         *algo = EVP_sha224();
 220                         break;
 221                 case RTE_CRYPTO_AUTH_SHA256:
 222                 case RTE_CRYPTO_AUTH_SHA256_HMAC:
 223                         *algo = EVP_sha256();
 224                         break;
 225                 case RTE_CRYPTO_AUTH_SHA384:
 226                 case RTE_CRYPTO_AUTH_SHA384_HMAC:
 227                         *algo = EVP_sha384();
 228                         break;
 229                 case RTE_CRYPTO_AUTH_SHA512:
 230                 case RTE_CRYPTO_AUTH_SHA512_HMAC:
 231                         *algo = EVP_sha512();
 232                         break;
 233                 default:
 234                         res = -EINVAL;
 235                         break;
 236                 }
 237         } else {
 238                 res = -EINVAL;
 239         }
 240
 241         return res;
 242 }
 243
 244 /** Get adequate openssl function for input cipher algorithm */
 245 static uint8_t
 246 get_aead_algo(enum rte_crypto_aead_algorithm sess_algo, size_t keylen,
 247                 const EVP_CIPHER **algo)
 248 {
 249         int res = 0;
 250
 251         if (algo != NULL) {
 252                 switch (sess_algo) {
 253                 case RTE_CRYPTO_AEAD_AES_GCM:
 254                         switch (keylen) {
 255                         case 16:
 256                                 *algo = EVP_aes_128_gcm();
 257                                 break;
 258                         case 24:
 259                                 *algo = EVP_aes_192_gcm();
 260                                 break;
 261                         case 32:
 262                                 *algo = EVP_aes_256_gcm();
 263                                 break;
 264                         default:
 265                                 res = -EINVAL;
 266                         }
 267                         break;
 268                 default:
 269                         res = -EINVAL;
 270                         break;
 271                 }
 272         } else {
 273                 res = -EINVAL;
 274         }
 275
 276         return res;
 277 }
 278
 279 /** Set session cipher parameters */
 280 static int
 281 openssl_set_session_cipher_parameters(struct openssl_session *sess,
 282                 const struct rte_crypto_sym_xform *xform)
 283 {
 284         /* Select cipher direction */
 285         sess->cipher.direction = xform->cipher.op;
 286         /* Select cipher key */
 287         sess->cipher.key.length = xform->cipher.key.length;
 288
 289         /* Set IV parameters */
 290         sess->iv.offset = xform->cipher.iv.offset;
 291         sess->iv.length = xform->cipher.iv.length;
 292
 293         /* Select cipher algo */
 294         switch (xform->cipher.algo) {
 295         case RTE_CRYPTO_CIPHER_3DES_CBC:
 296         case RTE_CRYPTO_CIPHER_AES_CBC:
 297         case RTE_CRYPTO_CIPHER_AES_CTR:
 298                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 299                 sess->cipher.algo = xform->cipher.algo;
 300                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 301
 302                 if (get_cipher_algo(sess->cipher.algo, sess->cipher.key.length,
 303                                 &sess->cipher.evp_algo) != 0)
 304                         return -EINVAL;
 305
 306                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 307                         sess->cipher.key.data);
 308
 309                 break;
 310
 311         case RTE_CRYPTO_CIPHER_3DES_CTR:
 312                 sess->cipher.mode = OPENSSL_CIPHER_DES3CTR;
 313                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 314
 315                 if (get_cipher_key_ede(xform->cipher.key.data,
 316                                 sess->cipher.key.length,
 317                                 sess->cipher.key.data) != 0)
 318                         return -EINVAL;
 319                 break;
 320         case RTE_CRYPTO_CIPHER_DES_DOCSISBPI:
 321                 sess->cipher.algo = xform->cipher.algo;
 322                 sess->chain_order = OPENSSL_CHAIN_CIPHER_BPI;
 323                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 324                 sess->cipher.evp_algo = EVP_des_cbc();
 325
 326                 sess->cipher.bpi_ctx = EVP_CIPHER_CTX_new();
 327                 /* IV will be ECB encrypted whether direction is encrypt or decrypt */
 328                 if (EVP_EncryptInit_ex(sess->cipher.bpi_ctx, EVP_des_ecb(),
 329                                 NULL, xform->cipher.key.data, 0) != 1)
 330                         return -EINVAL;
 331
 332                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 333                         sess->cipher.key.data);
 334                 break;
 335         default:
 336                 sess->cipher.algo = RTE_CRYPTO_CIPHER_NULL;
 337                 return -EINVAL;
 338         }
 339
 340         return 0;
 341 }
 342
 343 /* Set session auth parameters */
 344 static int
 345 openssl_set_session_auth_parameters(struct openssl_session *sess,
 346                 const struct rte_crypto_sym_xform *xform)
 347 {
 348         /* Select auth generate/verify */
 349         sess->auth.operation = xform->auth.op;
 350         sess->auth.algo = xform->auth.algo;
 351
 352         /* Select auth algo */
 353         switch (xform->auth.algo) {
 354         case RTE_CRYPTO_AUTH_AES_GMAC:
 355                 sess->chain_order = OPENSSL_CHAIN_COMBINED;
 356
 357                 /* Set IV parameters */
 358                 sess->iv.offset = xform->auth.iv.offset;
 359                 sess->iv.length = xform->auth.iv.length;
 360
 361                 /*
 362                  * OpenSSL requires GMAC to be a GCM operation
 363                  * with no cipher data length
 364                  */
 365                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 366                 if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_GENERATE)
 367                         sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
 368                 else
 369                         sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_DECRYPT;
 370
 371                 sess->cipher.key.length = xform->auth.key.length;
 372                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 373
 374                 if (get_aead_algo(RTE_CRYPTO_AEAD_AES_GCM,
 375                                 sess->cipher.key.length,
 376                                 &sess->cipher.evp_algo) != 0)
 377                         return -EINVAL;
 378
 379                 get_cipher_key(xform->auth.key.data, xform->auth.key.length,
 380                         sess->cipher.key.data);
 381
 382                 break;
 383
 384         case RTE_CRYPTO_AUTH_MD5:
 385         case RTE_CRYPTO_AUTH_SHA1:
 386         case RTE_CRYPTO_AUTH_SHA224:
 387         case RTE_CRYPTO_AUTH_SHA256:
 388         case RTE_CRYPTO_AUTH_SHA384:
 389         case RTE_CRYPTO_AUTH_SHA512:
 390                 sess->auth.mode = OPENSSL_AUTH_AS_AUTH;
 391                 if (get_auth_algo(xform->auth.algo,
 392                                 &sess->auth.auth.evp_algo) != 0)
 393                         return -EINVAL;
 394                 sess->auth.auth.ctx = EVP_MD_CTX_create();
 395                 break;
 396
 397         case RTE_CRYPTO_AUTH_MD5_HMAC:
 398         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 399         case RTE_CRYPTO_AUTH_SHA224_HMAC:
 400         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 401         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 402         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 403                 sess->auth.mode = OPENSSL_AUTH_AS_HMAC;
 404                 sess->auth.hmac.ctx = EVP_MD_CTX_create();
 405                 if (get_auth_algo(xform->auth.algo,
 406                                 &sess->auth.hmac.evp_algo) != 0)
 407                         return -EINVAL;
 408                 sess->auth.hmac.pkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
 409                                 xform->auth.key.data, xform->auth.key.length);
 410                 break;
 411
 412         default:
 413                 return -EINVAL;
 414         }
 415
 416         sess->auth.digest_length = xform->auth.digest_length;
 417
 418         return 0;
 419 }
 420
 421 /* Set session AEAD parameters */
 422 static int
 423 openssl_set_session_aead_parameters(struct openssl_session *sess,
 424                 const struct rte_crypto_sym_xform *xform)
 425 {
 426         /* Select cipher direction */
 427         sess->cipher.direction = xform->cipher.op;
 428         /* Select cipher key */
 429         sess->cipher.key.length = xform->aead.key.length;
 430
 431         /* Set IV parameters */
 432         sess->iv.offset = xform->aead.iv.offset;
 433         sess->iv.length = xform->aead.iv.length;
 434
 435         /* Select auth generate/verify */
 436         sess->auth.operation = xform->auth.op;
 437         sess->auth.algo = xform->auth.algo;
 438
 439         /* Select auth algo */
 440         switch (xform->aead.algo) {
 441         case RTE_CRYPTO_AEAD_AES_GCM:
 442                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 443                 sess->aead_algo = xform->aead.algo;
 444                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 445
 446                 if (get_aead_algo(sess->aead_algo, sess->cipher.key.length,
 447                                 &sess->cipher.evp_algo) != 0)
 448                         return -EINVAL;
 449
 450                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 451                         sess->cipher.key.data);
 452
 453                 sess->chain_order = OPENSSL_CHAIN_COMBINED;
 454                 break;
 455         default:
 456                 return -EINVAL;
 457         }
 458
 459         sess->auth.aad_length = xform->aead.add_auth_data_length;
 460         sess->auth.digest_length = xform->aead.digest_length;
 461
 462         return 0;
 463 }
 464
 465 /** Parse crypto xform chain and set private session parameters */
 466 int
 467 openssl_set_session_parameters(struct openssl_session *sess,
 468                 const struct rte_crypto_sym_xform *xform)
 469 {
 470         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 471         const struct rte_crypto_sym_xform *auth_xform = NULL;
 472         const struct rte_crypto_sym_xform *aead_xform = NULL;
 473
 474         sess->chain_order = openssl_get_chain_order(xform);
 475         switch (sess->chain_order) {
 476         case OPENSSL_CHAIN_ONLY_CIPHER:
 477                 cipher_xform = xform;
 478                 break;
 479         case OPENSSL_CHAIN_ONLY_AUTH:
 480                 auth_xform = xform;
 481                 break;
 482         case OPENSSL_CHAIN_CIPHER_AUTH:
 483                 cipher_xform = xform;
 484                 auth_xform = xform->next;
 485                 break;
 486         case OPENSSL_CHAIN_AUTH_CIPHER:
 487                 auth_xform = xform;
 488                 cipher_xform = xform->next;
 489                 break;
 490         case OPENSSL_CHAIN_COMBINED:
 491                 aead_xform = xform;
 492                 break;
 493         default:
 494                 return -EINVAL;
 495         }
 496
 497         /* Default IV length = 0 */
 498         sess->iv.length = 0;
 499
 500         /* cipher_xform must be check before auth_xform */
 501         if (cipher_xform) {
 502                 if (openssl_set_session_cipher_parameters(
 503                                 sess, cipher_xform)) {
 504                         OPENSSL_LOG_ERR(
 505                                 "Invalid/unsupported cipher parameters");
 506                         return -EINVAL;
 507                 }
 508         }
 509
 510         if (auth_xform) {
 511                 if (openssl_set_session_auth_parameters(sess, auth_xform)) {
 512                         OPENSSL_LOG_ERR(
 513                                 "Invalid/unsupported auth parameters");
 514                         return -EINVAL;
 515                 }
 516         }
 517
 518         if (aead_xform) {
 519                 if (openssl_set_session_aead_parameters(sess, aead_xform)) {
 520                         OPENSSL_LOG_ERR(
 521                                 "Invalid/unsupported auth parameters");
 522                         return -EINVAL;
 523                 }
 524         }
 525
 526         return 0;
 527 }
 528
 529 /** Reset private session parameters */
 530 void
 531 openssl_reset_session(struct openssl_session *sess)
 532 {
 533         EVP_CIPHER_CTX_free(sess->cipher.ctx);
 534
 535         if (sess->chain_order == OPENSSL_CHAIN_CIPHER_BPI)
 536                 EVP_CIPHER_CTX_free(sess->cipher.bpi_ctx);
 537
 538         switch (sess->auth.mode) {
 539         case OPENSSL_AUTH_AS_AUTH:
 540                 EVP_MD_CTX_destroy(sess->auth.auth.ctx);
 541                 break;
 542         case OPENSSL_AUTH_AS_HMAC:
 543                 EVP_PKEY_free(sess->auth.hmac.pkey);
 544                 EVP_MD_CTX_destroy(sess->auth.hmac.ctx);
 545                 break;
 546         default:
 547                 break;
 548         }
 549 }
 550
 551 /** Provide session for operation */
 552 static struct openssl_session *
 553 get_session(struct openssl_qp *qp, struct rte_crypto_op *op)
 554 {
 555         struct openssl_session *sess = NULL;
 556
 557         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 558                 /* get existing session */
 559                 if (likely(op->sym->session != NULL &&
 560                                 op->sym->session->dev_type ==
 561                                 RTE_CRYPTODEV_OPENSSL_PMD))
 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->dev_type = RTE_CRYPTODEV_OPENSSL_PMD;
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>");