drivers/crypto/openssl/rte_openssl_pmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4
   5 #include <rte_common.h>
   6 #include <rte_hexdump.h>
   7 #include <rte_cryptodev.h>
   8 #include <rte_cryptodev_pmd.h>
   9 #include <rte_bus_vdev.h>
  10 #include <rte_malloc.h>
  11 #include <rte_cpuflags.h>
  12
  13 #include <openssl/hmac.h>
  14 #include <openssl/evp.h>
  15
  16 #include "rte_openssl_pmd_private.h"
  17
  18 #define DES_BLOCK_SIZE 8
  19
  20 static uint8_t cryptodev_driver_id;
  21
  22 #if (OPENSSL_VERSION_NUMBER < 0x10100000L)
  23 static HMAC_CTX *HMAC_CTX_new(void)
  24 {
  25         HMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
  26
  27         if (ctx != NULL)
  28                 HMAC_CTX_init(ctx);
  29         return ctx;
  30 }
  31
  32 static void HMAC_CTX_free(HMAC_CTX *ctx)
  33 {
  34         if (ctx != NULL) {
  35                 HMAC_CTX_cleanup(ctx);
  36                 OPENSSL_free(ctx);
  37         }
  38 }
  39 #endif
  40
  41 static int cryptodev_openssl_remove(struct rte_vdev_device *vdev);
  42
  43 /*----------------------------------------------------------------------------*/
  44
  45 /**
  46  * Increment counter by 1
  47  * Counter is 64 bit array, big-endian
  48  */
  49 static void
  50 ctr_inc(uint8_t *ctr)
  51 {
  52         uint64_t *ctr64 = (uint64_t *)ctr;
  53
  54         *ctr64 = __builtin_bswap64(*ctr64);
  55         (*ctr64)++;
  56         *ctr64 = __builtin_bswap64(*ctr64);
  57 }
  58
  59 /*
  60  *------------------------------------------------------------------------------
  61  * Session Prepare
  62  *------------------------------------------------------------------------------
  63  */
  64
  65 /** Get xform chain order */
  66 static enum openssl_chain_order
  67 openssl_get_chain_order(const struct rte_crypto_sym_xform *xform)
  68 {
  69         enum openssl_chain_order res = OPENSSL_CHAIN_NOT_SUPPORTED;
  70
  71         if (xform != NULL) {
  72                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  73                         if (xform->next == NULL)
  74                                 res =  OPENSSL_CHAIN_ONLY_AUTH;
  75                         else if (xform->next->type ==
  76                                         RTE_CRYPTO_SYM_XFORM_CIPHER)
  77                                 res =  OPENSSL_CHAIN_AUTH_CIPHER;
  78                 }
  79                 if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  80                         if (xform->next == NULL)
  81                                 res =  OPENSSL_CHAIN_ONLY_CIPHER;
  82                         else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  83                                 res =  OPENSSL_CHAIN_CIPHER_AUTH;
  84                 }
  85                 if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD)
  86                         res = OPENSSL_CHAIN_COMBINED;
  87         }
  88
  89         return res;
  90 }
  91
  92 /** Get session cipher key from input cipher key */
  93 static void
  94 get_cipher_key(uint8_t *input_key, int keylen, uint8_t *session_key)
  95 {
  96         memcpy(session_key, input_key, keylen);
  97 }
  98
  99 /** Get key ede 24 bytes standard from input key */
 100 static int
 101 get_cipher_key_ede(uint8_t *key, int keylen, uint8_t *key_ede)
 102 {
 103         int res = 0;
 104
 105         /* Initialize keys - 24 bytes: [key1-key2-key3] */
 106         switch (keylen) {
 107         case 24:
 108                 memcpy(key_ede, key, 24);
 109                 break;
 110         case 16:
 111                 /* K3 = K1 */
 112                 memcpy(key_ede, key, 16);
 113                 memcpy(key_ede + 16, key, 8);
 114                 break;
 115         case 8:
 116                 /* K1 = K2 = K3 (DES compatibility) */
 117                 memcpy(key_ede, key, 8);
 118                 memcpy(key_ede + 8, key, 8);
 119                 memcpy(key_ede + 16, key, 8);
 120                 break;
 121         default:
 122                 OPENSSL_LOG(ERR, "Unsupported key size");
 123                 res = -EINVAL;
 124         }
 125
 126         return res;
 127 }
 128
 129 /** Get adequate openssl function for input cipher algorithm */
 130 static uint8_t
 131 get_cipher_algo(enum rte_crypto_cipher_algorithm sess_algo, size_t keylen,
 132                 const EVP_CIPHER **algo)
 133 {
 134         int res = 0;
 135
 136         if (algo != NULL) {
 137                 switch (sess_algo) {
 138                 case RTE_CRYPTO_CIPHER_3DES_CBC:
 139                         switch (keylen) {
 140                         case 8:
 141                                 *algo = EVP_des_cbc();
 142                                 break;
 143                         case 16:
 144                                 *algo = EVP_des_ede_cbc();
 145                                 break;
 146                         case 24:
 147                                 *algo = EVP_des_ede3_cbc();
 148                                 break;
 149                         default:
 150                                 res = -EINVAL;
 151                         }
 152                         break;
 153                 case RTE_CRYPTO_CIPHER_3DES_CTR:
 154                         break;
 155                 case RTE_CRYPTO_CIPHER_AES_CBC:
 156                         switch (keylen) {
 157                         case 16:
 158                                 *algo = EVP_aes_128_cbc();
 159                                 break;
 160                         case 24:
 161                                 *algo = EVP_aes_192_cbc();
 162                                 break;
 163                         case 32:
 164                                 *algo = EVP_aes_256_cbc();
 165                                 break;
 166                         default:
 167                                 res = -EINVAL;
 168                         }
 169                         break;
 170                 case RTE_CRYPTO_CIPHER_AES_CTR:
 171                         switch (keylen) {
 172                         case 16:
 173                                 *algo = EVP_aes_128_ctr();
 174                                 break;
 175                         case 24:
 176                                 *algo = EVP_aes_192_ctr();
 177                                 break;
 178                         case 32:
 179                                 *algo = EVP_aes_256_ctr();
 180                                 break;
 181                         default:
 182                                 res = -EINVAL;
 183                         }
 184                         break;
 185                 default:
 186                         res = -EINVAL;
 187                         break;
 188                 }
 189         } else {
 190                 res = -EINVAL;
 191         }
 192
 193         return res;
 194 }
 195
 196 /** Get adequate openssl function for input auth algorithm */
 197 static uint8_t
 198 get_auth_algo(enum rte_crypto_auth_algorithm sessalgo,
 199                 const EVP_MD **algo)
 200 {
 201         int res = 0;
 202
 203         if (algo != NULL) {
 204                 switch (sessalgo) {
 205                 case RTE_CRYPTO_AUTH_MD5:
 206                 case RTE_CRYPTO_AUTH_MD5_HMAC:
 207                         *algo = EVP_md5();
 208                         break;
 209                 case RTE_CRYPTO_AUTH_SHA1:
 210                 case RTE_CRYPTO_AUTH_SHA1_HMAC:
 211                         *algo = EVP_sha1();
 212                         break;
 213                 case RTE_CRYPTO_AUTH_SHA224:
 214                 case RTE_CRYPTO_AUTH_SHA224_HMAC:
 215                         *algo = EVP_sha224();
 216                         break;
 217                 case RTE_CRYPTO_AUTH_SHA256:
 218                 case RTE_CRYPTO_AUTH_SHA256_HMAC:
 219                         *algo = EVP_sha256();
 220                         break;
 221                 case RTE_CRYPTO_AUTH_SHA384:
 222                 case RTE_CRYPTO_AUTH_SHA384_HMAC:
 223                         *algo = EVP_sha384();
 224                         break;
 225                 case RTE_CRYPTO_AUTH_SHA512:
 226                 case RTE_CRYPTO_AUTH_SHA512_HMAC:
 227                         *algo = EVP_sha512();
 228                         break;
 229                 default:
 230                         res = -EINVAL;
 231                         break;
 232                 }
 233         } else {
 234                 res = -EINVAL;
 235         }
 236
 237         return res;
 238 }
 239
 240 /** Get adequate openssl function for input cipher algorithm */
 241 static uint8_t
 242 get_aead_algo(enum rte_crypto_aead_algorithm sess_algo, size_t keylen,
 243                 const EVP_CIPHER **algo)
 244 {
 245         int res = 0;
 246
 247         if (algo != NULL) {
 248                 switch (sess_algo) {
 249                 case RTE_CRYPTO_AEAD_AES_GCM:
 250                         switch (keylen) {
 251                         case 16:
 252                                 *algo = EVP_aes_128_gcm();
 253                                 break;
 254                         case 24:
 255                                 *algo = EVP_aes_192_gcm();
 256                                 break;
 257                         case 32:
 258                                 *algo = EVP_aes_256_gcm();
 259                                 break;
 260                         default:
 261                                 res = -EINVAL;
 262                         }
 263                         break;
 264                 case RTE_CRYPTO_AEAD_AES_CCM:
 265                         switch (keylen) {
 266                         case 16:
 267                                 *algo = EVP_aes_128_ccm();
 268                                 break;
 269                         case 24:
 270                                 *algo = EVP_aes_192_ccm();
 271                                 break;
 272                         case 32:
 273                                 *algo = EVP_aes_256_ccm();
 274                                 break;
 275                         default:
 276                                 res = -EINVAL;
 277                         }
 278                         break;
 279                 default:
 280                         res = -EINVAL;
 281                         break;
 282                 }
 283         } else {
 284                 res = -EINVAL;
 285         }
 286
 287         return res;
 288 }
 289
 290 /* Set session AEAD encryption parameters */
 291 static int
 292 openssl_set_sess_aead_enc_param(struct openssl_session *sess,
 293                 enum rte_crypto_aead_algorithm algo,
 294                 uint8_t tag_len, uint8_t *key)
 295 {
 296         int iv_type = 0;
 297         unsigned int do_ccm;
 298
 299         sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
 300         sess->auth.operation = RTE_CRYPTO_AUTH_OP_GENERATE;
 301
 302         /* Select AEAD algo */
 303         switch (algo) {
 304         case RTE_CRYPTO_AEAD_AES_GCM:
 305                 iv_type = EVP_CTRL_GCM_SET_IVLEN;
 306                 if (tag_len != 16)
 307                         return -EINVAL;
 308                 do_ccm = 0;
 309                 break;
 310         case RTE_CRYPTO_AEAD_AES_CCM:
 311                 iv_type = EVP_CTRL_CCM_SET_IVLEN;
 312                 /* Digest size can be 4, 6, 8, 10, 12, 14 or 16 bytes */
 313                 if (tag_len < 4 || tag_len > 16 || (tag_len & 1) == 1)
 314                         return -EINVAL;
 315                 do_ccm = 1;
 316                 break;
 317         default:
 318                 return -ENOTSUP;
 319         }
 320
 321         sess->cipher.mode = OPENSSL_CIPHER_LIB;
 322         sess->cipher.ctx = EVP_CIPHER_CTX_new();
 323
 324         if (get_aead_algo(algo, sess->cipher.key.length,
 325                         &sess->cipher.evp_algo) != 0)
 326                 return -EINVAL;
 327
 328         get_cipher_key(key, sess->cipher.key.length, sess->cipher.key.data);
 329
 330         sess->chain_order = OPENSSL_CHAIN_COMBINED;
 331
 332         if (EVP_EncryptInit_ex(sess->cipher.ctx, sess->cipher.evp_algo,
 333                         NULL, NULL, NULL) <= 0)
 334                 return -EINVAL;
 335
 336         if (EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, iv_type, sess->iv.length,
 337                         NULL) <= 0)
 338                 return -EINVAL;
 339
 340         if (do_ccm)
 341                 EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, EVP_CTRL_CCM_SET_TAG,
 342                                 tag_len, NULL);
 343
 344         if (EVP_EncryptInit_ex(sess->cipher.ctx, NULL, NULL, key, NULL) <= 0)
 345                 return -EINVAL;
 346
 347         return 0;
 348 }
 349
 350 /* Set session AEAD decryption parameters */
 351 static int
 352 openssl_set_sess_aead_dec_param(struct openssl_session *sess,
 353                 enum rte_crypto_aead_algorithm algo,
 354                 uint8_t tag_len, uint8_t *key)
 355 {
 356         int iv_type = 0;
 357         unsigned int do_ccm = 0;
 358
 359         sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_DECRYPT;
 360         sess->auth.operation = RTE_CRYPTO_AUTH_OP_VERIFY;
 361
 362         /* Select AEAD algo */
 363         switch (algo) {
 364         case RTE_CRYPTO_AEAD_AES_GCM:
 365                 iv_type = EVP_CTRL_GCM_SET_IVLEN;
 366                 if (tag_len != 16)
 367                         return -EINVAL;
 368                 break;
 369         case RTE_CRYPTO_AEAD_AES_CCM:
 370                 iv_type = EVP_CTRL_CCM_SET_IVLEN;
 371                 /* Digest size can be 4, 6, 8, 10, 12, 14 or 16 bytes */
 372                 if (tag_len < 4 || tag_len > 16 || (tag_len & 1) == 1)
 373                         return -EINVAL;
 374                 do_ccm = 1;
 375                 break;
 376         default:
 377                 return -ENOTSUP;
 378         }
 379
 380         sess->cipher.mode = OPENSSL_CIPHER_LIB;
 381         sess->cipher.ctx = EVP_CIPHER_CTX_new();
 382
 383         if (get_aead_algo(algo, sess->cipher.key.length,
 384                         &sess->cipher.evp_algo) != 0)
 385                 return -EINVAL;
 386
 387         get_cipher_key(key, sess->cipher.key.length, sess->cipher.key.data);
 388
 389         sess->chain_order = OPENSSL_CHAIN_COMBINED;
 390
 391         if (EVP_DecryptInit_ex(sess->cipher.ctx, sess->cipher.evp_algo,
 392                         NULL, NULL, NULL) <= 0)
 393                 return -EINVAL;
 394
 395         if (EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, iv_type,
 396                         sess->iv.length, NULL) <= 0)
 397                 return -EINVAL;
 398
 399         if (do_ccm)
 400                 EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, EVP_CTRL_CCM_SET_TAG,
 401                                 tag_len, NULL);
 402
 403         if (EVP_DecryptInit_ex(sess->cipher.ctx, NULL, NULL, key, NULL) <= 0)
 404                 return -EINVAL;
 405
 406         return 0;
 407 }
 408
 409 /** Set session cipher parameters */
 410 static int
 411 openssl_set_session_cipher_parameters(struct openssl_session *sess,
 412                 const struct rte_crypto_sym_xform *xform)
 413 {
 414         /* Select cipher direction */
 415         sess->cipher.direction = xform->cipher.op;
 416         /* Select cipher key */
 417         sess->cipher.key.length = xform->cipher.key.length;
 418
 419         /* Set IV parameters */
 420         sess->iv.offset = xform->cipher.iv.offset;
 421         sess->iv.length = xform->cipher.iv.length;
 422
 423         /* Select cipher algo */
 424         switch (xform->cipher.algo) {
 425         case RTE_CRYPTO_CIPHER_3DES_CBC:
 426         case RTE_CRYPTO_CIPHER_AES_CBC:
 427         case RTE_CRYPTO_CIPHER_AES_CTR:
 428                 sess->cipher.mode = OPENSSL_CIPHER_LIB;
 429                 sess->cipher.algo = xform->cipher.algo;
 430                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 431
 432                 if (get_cipher_algo(sess->cipher.algo, sess->cipher.key.length,
 433                                 &sess->cipher.evp_algo) != 0)
 434                         return -EINVAL;
 435
 436                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 437                         sess->cipher.key.data);
 438                 if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
 439                         if (EVP_EncryptInit_ex(sess->cipher.ctx,
 440                                         sess->cipher.evp_algo,
 441                                         NULL, xform->cipher.key.data,
 442                                         NULL) != 1) {
 443                                 return -EINVAL;
 444                         }
 445                 } else if (sess->cipher.direction ==
 446                                 RTE_CRYPTO_CIPHER_OP_DECRYPT) {
 447                         if (EVP_DecryptInit_ex(sess->cipher.ctx,
 448                                         sess->cipher.evp_algo,
 449                                         NULL, xform->cipher.key.data,
 450                                         NULL) != 1) {
 451                                 return -EINVAL;
 452                         }
 453                 }
 454
 455                 break;
 456
 457         case RTE_CRYPTO_CIPHER_3DES_CTR:
 458                 sess->cipher.mode = OPENSSL_CIPHER_DES3CTR;
 459                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 460
 461                 if (get_cipher_key_ede(xform->cipher.key.data,
 462                                 sess->cipher.key.length,
 463                                 sess->cipher.key.data) != 0)
 464                         return -EINVAL;
 465                 break;
 466
 467         case RTE_CRYPTO_CIPHER_DES_CBC:
 468                 sess->cipher.algo = xform->cipher.algo;
 469                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 470                 sess->cipher.evp_algo = EVP_des_cbc();
 471
 472                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 473                         sess->cipher.key.data);
 474                 if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
 475                         if (EVP_EncryptInit_ex(sess->cipher.ctx,
 476                                         sess->cipher.evp_algo,
 477                                         NULL, xform->cipher.key.data,
 478                                         NULL) != 1) {
 479                                 return -EINVAL;
 480                         }
 481                 } else if (sess->cipher.direction ==
 482                                 RTE_CRYPTO_CIPHER_OP_DECRYPT) {
 483                         if (EVP_DecryptInit_ex(sess->cipher.ctx,
 484                                         sess->cipher.evp_algo,
 485                                         NULL, xform->cipher.key.data,
 486                                         NULL) != 1) {
 487                                 return -EINVAL;
 488                         }
 489                 }
 490
 491                 break;
 492
 493         case RTE_CRYPTO_CIPHER_DES_DOCSISBPI:
 494                 sess->cipher.algo = xform->cipher.algo;
 495                 sess->chain_order = OPENSSL_CHAIN_CIPHER_BPI;
 496                 sess->cipher.ctx = EVP_CIPHER_CTX_new();
 497                 sess->cipher.evp_algo = EVP_des_cbc();
 498
 499                 sess->cipher.bpi_ctx = EVP_CIPHER_CTX_new();
 500                 /* IV will be ECB encrypted whether direction is encrypt or decrypt */
 501                 if (EVP_EncryptInit_ex(sess->cipher.bpi_ctx, EVP_des_ecb(),
 502                                 NULL, xform->cipher.key.data, 0) != 1)
 503                         return -EINVAL;
 504
 505                 get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
 506                         sess->cipher.key.data);
 507                 if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
 508                         if (EVP_EncryptInit_ex(sess->cipher.ctx,
 509                                         sess->cipher.evp_algo,
 510                                         NULL, xform->cipher.key.data,
 511                                         NULL) != 1) {
 512                                 return -EINVAL;
 513                         }
 514                 } else if (sess->cipher.direction ==
 515                                 RTE_CRYPTO_CIPHER_OP_DECRYPT) {
 516                         if (EVP_DecryptInit_ex(sess->cipher.ctx,
 517                                         sess->cipher.evp_algo,
 518                                         NULL, xform->cipher.key.data,
 519                                         NULL) != 1) {
 520                                 return -EINVAL;
 521                         }
 522                 }
 523
 524                 break;
 525         default:
 526                 sess->cipher.algo = RTE_CRYPTO_CIPHER_NULL;
 527                 return -ENOTSUP;
 528         }
 529
 530         return 0;
 531 }
 532
 533 /* Set session auth parameters */
 534 static int
 535 openssl_set_session_auth_parameters(struct openssl_session *sess,
 536                 const struct rte_crypto_sym_xform *xform)
 537 {
 538         /* Select auth generate/verify */
 539         sess->auth.operation = xform->auth.op;
 540         sess->auth.algo = xform->auth.algo;
 541
 542         sess->auth.digest_length = xform->auth.digest_length;
 543
 544         /* Select auth algo */
 545         switch (xform->auth.algo) {
 546         case RTE_CRYPTO_AUTH_AES_GMAC:
 547                 /*
 548                  * OpenSSL requires GMAC to be a GCM operation
 549                  * with no cipher data length
 550                  */
 551                 sess->cipher.key.length = xform->auth.key.length;
 552
 553                 /* Set IV parameters */
 554                 sess->iv.offset = xform->auth.iv.offset;
 555                 sess->iv.length = xform->auth.iv.length;
 556
 557                 if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_GENERATE)
 558                         return openssl_set_sess_aead_enc_param(sess,
 559                                                 RTE_CRYPTO_AEAD_AES_GCM,
 560                                                 xform->auth.digest_length,
 561                                                 xform->auth.key.data);
 562                 else
 563                         return openssl_set_sess_aead_dec_param(sess,
 564                                                 RTE_CRYPTO_AEAD_AES_GCM,
 565                                                 xform->auth.digest_length,
 566                                                 xform->auth.key.data);
 567                 break;
 568
 569         case RTE_CRYPTO_AUTH_MD5:
 570         case RTE_CRYPTO_AUTH_SHA1:
 571         case RTE_CRYPTO_AUTH_SHA224:
 572         case RTE_CRYPTO_AUTH_SHA256:
 573         case RTE_CRYPTO_AUTH_SHA384:
 574         case RTE_CRYPTO_AUTH_SHA512:
 575                 sess->auth.mode = OPENSSL_AUTH_AS_AUTH;
 576                 if (get_auth_algo(xform->auth.algo,
 577                                 &sess->auth.auth.evp_algo) != 0)
 578                         return -EINVAL;
 579                 sess->auth.auth.ctx = EVP_MD_CTX_create();
 580                 break;
 581
 582         case RTE_CRYPTO_AUTH_MD5_HMAC:
 583         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 584         case RTE_CRYPTO_AUTH_SHA224_HMAC:
 585         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 586         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 587         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 588                 sess->auth.mode = OPENSSL_AUTH_AS_HMAC;
 589                 sess->auth.hmac.ctx = HMAC_CTX_new();
 590                 if (get_auth_algo(xform->auth.algo,
 591                                 &sess->auth.hmac.evp_algo) != 0)
 592                         return -EINVAL;
 593
 594                 if (HMAC_Init_ex(sess->auth.hmac.ctx,
 595                                 xform->auth.key.data,
 596                                 xform->auth.key.length,
 597                                 sess->auth.hmac.evp_algo, NULL) != 1)
 598                         return -EINVAL;
 599                 break;
 600
 601         default:
 602                 return -ENOTSUP;
 603         }
 604
 605         return 0;
 606 }
 607
 608 /* Set session AEAD parameters */
 609 static int
 610 openssl_set_session_aead_parameters(struct openssl_session *sess,
 611                 const struct rte_crypto_sym_xform *xform)
 612 {
 613         /* Select cipher key */
 614         sess->cipher.key.length = xform->aead.key.length;
 615
 616         /* Set IV parameters */
 617         if (xform->aead.algo == RTE_CRYPTO_AEAD_AES_CCM)
 618                 /*
 619                  * For AES-CCM, the actual IV is placed
 620                  * one byte after the start of the IV field,
 621                  * according to the API.
 622                  */
 623                 sess->iv.offset = xform->aead.iv.offset + 1;
 624         else
 625                 sess->iv.offset = xform->aead.iv.offset;
 626
 627         sess->iv.length = xform->aead.iv.length;
 628
 629         sess->auth.aad_length = xform->aead.aad_length;
 630         sess->auth.digest_length = xform->aead.digest_length;
 631
 632         sess->aead_algo = xform->aead.algo;
 633         /* Select cipher direction */
 634         if (xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT)
 635                 return openssl_set_sess_aead_enc_param(sess, xform->aead.algo,
 636                                 xform->aead.digest_length, xform->aead.key.data);
 637         else
 638                 return openssl_set_sess_aead_dec_param(sess, xform->aead.algo,
 639                                 xform->aead.digest_length, xform->aead.key.data);
 640 }
 641
 642 /** Parse crypto xform chain and set private session parameters */
 643 int
 644 openssl_set_session_parameters(struct openssl_session *sess,
 645                 const struct rte_crypto_sym_xform *xform)
 646 {
 647         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 648         const struct rte_crypto_sym_xform *auth_xform = NULL;
 649         const struct rte_crypto_sym_xform *aead_xform = NULL;
 650         int ret;
 651
 652         sess->chain_order = openssl_get_chain_order(xform);
 653         switch (sess->chain_order) {
 654         case OPENSSL_CHAIN_ONLY_CIPHER:
 655                 cipher_xform = xform;
 656                 break;
 657         case OPENSSL_CHAIN_ONLY_AUTH:
 658                 auth_xform = xform;
 659                 break;
 660         case OPENSSL_CHAIN_CIPHER_AUTH:
 661                 cipher_xform = xform;
 662                 auth_xform = xform->next;
 663                 break;
 664         case OPENSSL_CHAIN_AUTH_CIPHER:
 665                 auth_xform = xform;
 666                 cipher_xform = xform->next;
 667                 break;
 668         case OPENSSL_CHAIN_COMBINED:
 669                 aead_xform = xform;
 670                 break;
 671         default:
 672                 return -EINVAL;
 673         }
 674
 675         /* Default IV length = 0 */
 676         sess->iv.length = 0;
 677
 678         /* cipher_xform must be check before auth_xform */
 679         if (cipher_xform) {
 680                 ret = openssl_set_session_cipher_parameters(
 681                                 sess, cipher_xform);
 682                 if (ret != 0) {
 683                         OPENSSL_LOG(ERR,
 684                                 "Invalid/unsupported cipher parameters");
 685                         return ret;
 686                 }
 687         }
 688
 689         if (auth_xform) {
 690                 ret = openssl_set_session_auth_parameters(sess, auth_xform);
 691                 if (ret != 0) {
 692                         OPENSSL_LOG(ERR,
 693                                 "Invalid/unsupported auth parameters");
 694                         return ret;
 695                 }
 696         }
 697
 698         if (aead_xform) {
 699                 ret = openssl_set_session_aead_parameters(sess, aead_xform);
 700                 if (ret != 0) {
 701                         OPENSSL_LOG(ERR,
 702                                 "Invalid/unsupported AEAD parameters");
 703                         return ret;
 704                 }
 705         }
 706
 707         return 0;
 708 }
 709
 710 /** Reset private session parameters */
 711 void
 712 openssl_reset_session(struct openssl_session *sess)
 713 {
 714         EVP_CIPHER_CTX_free(sess->cipher.ctx);
 715
 716         if (sess->chain_order == OPENSSL_CHAIN_CIPHER_BPI)
 717                 EVP_CIPHER_CTX_free(sess->cipher.bpi_ctx);
 718
 719         switch (sess->auth.mode) {
 720         case OPENSSL_AUTH_AS_AUTH:
 721                 EVP_MD_CTX_destroy(sess->auth.auth.ctx);
 722                 break;
 723         case OPENSSL_AUTH_AS_HMAC:
 724                 EVP_PKEY_free(sess->auth.hmac.pkey);
 725                 HMAC_CTX_free(sess->auth.hmac.ctx);
 726                 break;
 727         default:
 728                 break;
 729         }
 730 }
 731
 732 /** Provide session for operation */
 733 static struct openssl_session *
 734 get_session(struct openssl_qp *qp, struct rte_crypto_op *op)
 735 {
 736         struct openssl_session *sess = NULL;
 737
 738         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 739                 /* get existing session */
 740                 if (likely(op->sym->session != NULL))
 741                         sess = (struct openssl_session *)
 742                                         get_sym_session_private_data(
 743                                         op->sym->session,
 744                                         cryptodev_driver_id);
 745         } else {
 746                 /* provide internal session */
 747                 void *_sess = NULL;
 748                 void *_sess_private_data = NULL;
 749
 750                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 751                         return NULL;
 752
 753                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 754                         return NULL;
 755
 756                 sess = (struct openssl_session *)_sess_private_data;
 757
 758                 if (unlikely(openssl_set_session_parameters(sess,
 759                                 op->sym->xform) != 0)) {
 760                         rte_mempool_put(qp->sess_mp, _sess);
 761                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 762                         sess = NULL;
 763                 }
 764                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 765                 set_sym_session_private_data(op->sym->session,
 766                                 cryptodev_driver_id, _sess_private_data);
 767         }
 768
 769         if (sess == NULL)
 770                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 771
 772         return sess;
 773 }
 774
 775 /*
 776  *------------------------------------------------------------------------------
 777  * Process Operations
 778  *------------------------------------------------------------------------------
 779  */
 780 static inline int
 781 process_openssl_encryption_update(struct rte_mbuf *mbuf_src, int offset,
 782                 uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx)
 783 {
 784         struct rte_mbuf *m;
 785         int dstlen;
 786         int l, n = srclen;
 787         uint8_t *src;
 788
 789         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 790                         m = m->next)
 791                 offset -= rte_pktmbuf_data_len(m);
 792
 793         if (m == 0)
 794                 return -1;
 795
 796         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 797
 798         l = rte_pktmbuf_data_len(m) - offset;
 799         if (srclen <= l) {
 800                 if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
 801                         return -1;
 802                 *dst += l;
 803                 return 0;
 804         }
 805
 806         if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 807                 return -1;
 808
 809         *dst += dstlen;
 810         n -= l;
 811
 812         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 813                 src = rte_pktmbuf_mtod(m, uint8_t *);
 814                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 815                 if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 816                         return -1;
 817                 *dst += dstlen;
 818                 n -= l;
 819         }
 820
 821         return 0;
 822 }
 823
 824 static inline int
 825 process_openssl_decryption_update(struct rte_mbuf *mbuf_src, int offset,
 826                 uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx)
 827 {
 828         struct rte_mbuf *m;
 829         int dstlen;
 830         int l, n = srclen;
 831         uint8_t *src;
 832
 833         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 834                         m = m->next)
 835                 offset -= rte_pktmbuf_data_len(m);
 836
 837         if (m == 0)
 838                 return -1;
 839
 840         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 841
 842         l = rte_pktmbuf_data_len(m) - offset;
 843         if (srclen <= l) {
 844                 if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
 845                         return -1;
 846                 *dst += l;
 847                 return 0;
 848         }
 849
 850         if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 851                 return -1;
 852
 853         *dst += dstlen;
 854         n -= l;
 855
 856         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
 857                 src = rte_pktmbuf_mtod(m, uint8_t *);
 858                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
 859                 if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
 860                         return -1;
 861                 *dst += dstlen;
 862                 n -= l;
 863         }
 864
 865         return 0;
 866 }
 867
 868 /** Process standard openssl cipher encryption */
 869 static int
 870 process_openssl_cipher_encrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
 871                 int offset, uint8_t *iv, int srclen, EVP_CIPHER_CTX *ctx)
 872 {
 873         int totlen;
 874
 875         if (EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
 876                 goto process_cipher_encrypt_err;
 877
 878         EVP_CIPHER_CTX_set_padding(ctx, 0);
 879
 880         if (process_openssl_encryption_update(mbuf_src, offset, &dst,
 881                         srclen, ctx))
 882                 goto process_cipher_encrypt_err;
 883
 884         if (EVP_EncryptFinal_ex(ctx, dst, &totlen) <= 0)
 885                 goto process_cipher_encrypt_err;
 886
 887         return 0;
 888
 889 process_cipher_encrypt_err:
 890         OPENSSL_LOG(ERR, "Process openssl cipher encrypt failed");
 891         return -EINVAL;
 892 }
 893
 894 /** Process standard openssl cipher encryption */
 895 static int
 896 process_openssl_cipher_bpi_encrypt(uint8_t *src, uint8_t *dst,
 897                 uint8_t *iv, int srclen,
 898                 EVP_CIPHER_CTX *ctx)
 899 {
 900         uint8_t i;
 901         uint8_t encrypted_iv[DES_BLOCK_SIZE];
 902         int encrypted_ivlen;
 903
 904         if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen,
 905                         iv, DES_BLOCK_SIZE) <= 0)
 906                 goto process_cipher_encrypt_err;
 907
 908         for (i = 0; i < srclen; i++)
 909                 *(dst + i) = *(src + i) ^ (encrypted_iv[i]);
 910
 911         return 0;
 912
 913 process_cipher_encrypt_err:
 914         OPENSSL_LOG(ERR, "Process openssl cipher bpi encrypt failed");
 915         return -EINVAL;
 916 }
 917 /** Process standard openssl cipher decryption */
 918 static int
 919 process_openssl_cipher_decrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
 920                 int offset, uint8_t *iv, int srclen, EVP_CIPHER_CTX *ctx)
 921 {
 922         int totlen;
 923
 924         if (EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
 925                 goto process_cipher_decrypt_err;
 926
 927         EVP_CIPHER_CTX_set_padding(ctx, 0);
 928
 929         if (process_openssl_decryption_update(mbuf_src, offset, &dst,
 930                         srclen, ctx))
 931                 goto process_cipher_decrypt_err;
 932
 933         if (EVP_DecryptFinal_ex(ctx, dst, &totlen) <= 0)
 934                 goto process_cipher_decrypt_err;
 935         return 0;
 936
 937 process_cipher_decrypt_err:
 938         OPENSSL_LOG(ERR, "Process openssl cipher decrypt failed");
 939         return -EINVAL;
 940 }
 941
 942 /** Process cipher des 3 ctr encryption, decryption algorithm */
 943 static int
 944 process_openssl_cipher_des3ctr(struct rte_mbuf *mbuf_src, uint8_t *dst,
 945                 int offset, uint8_t *iv, uint8_t *key, int srclen,
 946                 EVP_CIPHER_CTX *ctx)
 947 {
 948         uint8_t ebuf[8], ctr[8];
 949         int unused, n;
 950         struct rte_mbuf *m;
 951         uint8_t *src;
 952         int l;
 953
 954         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
 955                         m = m->next)
 956                 offset -= rte_pktmbuf_data_len(m);
 957
 958         if (m == 0)
 959                 goto process_cipher_des3ctr_err;
 960
 961         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
 962         l = rte_pktmbuf_data_len(m) - offset;
 963
 964         /* We use 3DES encryption also for decryption.
 965          * IV is not important for 3DES ecb
 966          */
 967         if (EVP_EncryptInit_ex(ctx, EVP_des_ede3_ecb(), NULL, key, NULL) <= 0)
 968                 goto process_cipher_des3ctr_err;
 969
 970         memcpy(ctr, iv, 8);
 971
 972         for (n = 0; n < srclen; n++) {
 973                 if (n % 8 == 0) {
 974                         if (EVP_EncryptUpdate(ctx,
 975                                         (unsigned char *)&ebuf, &unused,
 976                                         (const unsigned char *)&ctr, 8) <= 0)
 977                                 goto process_cipher_des3ctr_err;
 978                         ctr_inc(ctr);
 979                 }
 980                 dst[n] = *(src++) ^ ebuf[n % 8];
 981
 982                 l--;
 983                 if (!l) {
 984                         m = m->next;
 985                         if (m) {
 986                                 src = rte_pktmbuf_mtod(m, uint8_t *);
 987                                 l = rte_pktmbuf_data_len(m);
 988                         }
 989                 }
 990         }
 991
 992         return 0;
 993
 994 process_cipher_des3ctr_err:
 995         OPENSSL_LOG(ERR, "Process openssl cipher des 3 ede ctr failed");
 996         return -EINVAL;
 997 }
 998
 999 /** Process AES-GCM encrypt algorithm */
1000 static int
1001 process_openssl_auth_encryption_gcm(struct rte_mbuf *mbuf_src, int offset,
1002                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv,
1003                 uint8_t *dst, uint8_t *tag, EVP_CIPHER_CTX *ctx)
1004 {
1005         int len = 0, unused = 0;
1006         uint8_t empty[] = {};
1007
1008         if (EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
1009                 goto process_auth_encryption_gcm_err;
1010
1011         if (aadlen > 0)
1012                 if (EVP_EncryptUpdate(ctx, NULL, &len, aad, aadlen) <= 0)
1013                         goto process_auth_encryption_gcm_err;
1014
1015         if (srclen > 0)
1016                 if (process_openssl_encryption_update(mbuf_src, offset, &dst,
1017                                 srclen, ctx))
1018                         goto process_auth_encryption_gcm_err;
1019
1020         /* Workaround open ssl bug in version less then 1.0.1f */
1021         if (EVP_EncryptUpdate(ctx, empty, &unused, empty, 0) <= 0)
1022                 goto process_auth_encryption_gcm_err;
1023
1024         if (EVP_EncryptFinal_ex(ctx, dst, &len) <= 0)
1025                 goto process_auth_encryption_gcm_err;
1026
1027         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, 16, tag) <= 0)
1028                 goto process_auth_encryption_gcm_err;
1029
1030         return 0;
1031
1032 process_auth_encryption_gcm_err:
1033         OPENSSL_LOG(ERR, "Process openssl auth encryption gcm failed");
1034         return -EINVAL;
1035 }
1036
1037 /** Process AES-CCM encrypt algorithm */
1038 static int
1039 process_openssl_auth_encryption_ccm(struct rte_mbuf *mbuf_src, int offset,
1040                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv,
1041                 uint8_t *dst, uint8_t *tag, uint8_t taglen, EVP_CIPHER_CTX *ctx)
1042 {
1043         int len = 0;
1044
1045         if (EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
1046                 goto process_auth_encryption_ccm_err;
1047
1048         if (EVP_EncryptUpdate(ctx, NULL, &len, NULL, srclen) <= 0)
1049                 goto process_auth_encryption_ccm_err;
1050
1051         if (aadlen > 0)
1052                 /*
1053                  * For AES-CCM, the actual AAD is placed
1054                  * 18 bytes after the start of the AAD field,
1055                  * according to the API.
1056                  */
1057                 if (EVP_EncryptUpdate(ctx, NULL, &len, aad + 18, aadlen) <= 0)
1058                         goto process_auth_encryption_ccm_err;
1059
1060         if (srclen > 0)
1061                 if (process_openssl_encryption_update(mbuf_src, offset, &dst,
1062                                 srclen, ctx))
1063                         goto process_auth_encryption_ccm_err;
1064
1065         if (EVP_EncryptFinal_ex(ctx, dst, &len) <= 0)
1066                 goto process_auth_encryption_ccm_err;
1067
1068         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_GET_TAG, taglen, tag) <= 0)
1069                 goto process_auth_encryption_ccm_err;
1070
1071         return 0;
1072
1073 process_auth_encryption_ccm_err:
1074         OPENSSL_LOG(ERR, "Process openssl auth encryption ccm failed");
1075         return -EINVAL;
1076 }
1077
1078 /** Process AES-GCM decrypt algorithm */
1079 static int
1080 process_openssl_auth_decryption_gcm(struct rte_mbuf *mbuf_src, int offset,
1081                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv,
1082                 uint8_t *dst, uint8_t *tag, EVP_CIPHER_CTX *ctx)
1083 {
1084         int len = 0, unused = 0;
1085         uint8_t empty[] = {};
1086
1087         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, 16, tag) <= 0)
1088                 goto process_auth_decryption_gcm_err;
1089
1090         if (EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
1091                 goto process_auth_decryption_gcm_err;
1092
1093         if (aadlen > 0)
1094                 if (EVP_DecryptUpdate(ctx, NULL, &len, aad, aadlen) <= 0)
1095                         goto process_auth_decryption_gcm_err;
1096
1097         if (srclen > 0)
1098                 if (process_openssl_decryption_update(mbuf_src, offset, &dst,
1099                                 srclen, ctx))
1100                         goto process_auth_decryption_gcm_err;
1101
1102         /* Workaround open ssl bug in version less then 1.0.1f */
1103         if (EVP_DecryptUpdate(ctx, empty, &unused, empty, 0) <= 0)
1104                 goto process_auth_decryption_gcm_err;
1105
1106         if (EVP_DecryptFinal_ex(ctx, dst, &len) <= 0)
1107                 return -EFAULT;
1108
1109         return 0;
1110
1111 process_auth_decryption_gcm_err:
1112         OPENSSL_LOG(ERR, "Process openssl auth decryption gcm failed");
1113         return -EINVAL;
1114 }
1115
1116 /** Process AES-CCM decrypt algorithm */
1117 static int
1118 process_openssl_auth_decryption_ccm(struct rte_mbuf *mbuf_src, int offset,
1119                 int srclen, uint8_t *aad, int aadlen, uint8_t *iv,
1120                 uint8_t *dst, uint8_t *tag, uint8_t tag_len,
1121                 EVP_CIPHER_CTX *ctx)
1122 {
1123         int len = 0;
1124
1125         if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag_len, tag) <= 0)
1126                 goto process_auth_decryption_ccm_err;
1127
1128         if (EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
1129                 goto process_auth_decryption_ccm_err;
1130
1131         if (EVP_DecryptUpdate(ctx, NULL, &len, NULL, srclen) <= 0)
1132                 goto process_auth_decryption_ccm_err;
1133
1134         if (aadlen > 0)
1135                 /*
1136                  * For AES-CCM, the actual AAD is placed
1137                  * 18 bytes after the start of the AAD field,
1138                  * according to the API.
1139                  */
1140                 if (EVP_DecryptUpdate(ctx, NULL, &len, aad + 18, aadlen) <= 0)
1141                         goto process_auth_decryption_ccm_err;
1142
1143         if (srclen > 0)
1144                 if (process_openssl_decryption_update(mbuf_src, offset, &dst,
1145                                 srclen, ctx))
1146                         return -EFAULT;
1147
1148         return 0;
1149
1150 process_auth_decryption_ccm_err:
1151         OPENSSL_LOG(ERR, "Process openssl auth decryption ccm failed");
1152         return -EINVAL;
1153 }
1154
1155 /** Process standard openssl auth algorithms */
1156 static int
1157 process_openssl_auth(struct rte_mbuf *mbuf_src, uint8_t *dst, int offset,
1158                 __rte_unused uint8_t *iv, __rte_unused EVP_PKEY * pkey,
1159                 int srclen, EVP_MD_CTX *ctx, const EVP_MD *algo)
1160 {
1161         size_t dstlen;
1162         struct rte_mbuf *m;
1163         int l, n = srclen;
1164         uint8_t *src;
1165
1166         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
1167                         m = m->next)
1168                 offset -= rte_pktmbuf_data_len(m);
1169
1170         if (m == 0)
1171                 goto process_auth_err;
1172
1173         if (EVP_DigestInit_ex(ctx, algo, NULL) <= 0)
1174                 goto process_auth_err;
1175
1176         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
1177
1178         l = rte_pktmbuf_data_len(m) - offset;
1179         if (srclen <= l) {
1180                 if (EVP_DigestUpdate(ctx, (char *)src, srclen) <= 0)
1181                         goto process_auth_err;
1182                 goto process_auth_final;
1183         }
1184
1185         if (EVP_DigestUpdate(ctx, (char *)src, l) <= 0)
1186                 goto process_auth_err;
1187
1188         n -= l;
1189
1190         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
1191                 src = rte_pktmbuf_mtod(m, uint8_t *);
1192                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
1193                 if (EVP_DigestUpdate(ctx, (char *)src, l) <= 0)
1194                         goto process_auth_err;
1195                 n -= l;
1196         }
1197
1198 process_auth_final:
1199         if (EVP_DigestFinal_ex(ctx, dst, (unsigned int *)&dstlen) <= 0)
1200                 goto process_auth_err;
1201         return 0;
1202
1203 process_auth_err:
1204         OPENSSL_LOG(ERR, "Process openssl auth failed");
1205         return -EINVAL;
1206 }
1207
1208 /** Process standard openssl auth algorithms with hmac */
1209 static int
1210 process_openssl_auth_hmac(struct rte_mbuf *mbuf_src, uint8_t *dst, int offset,
1211                 int srclen, HMAC_CTX *ctx)
1212 {
1213         unsigned int dstlen;
1214         struct rte_mbuf *m;
1215         int l, n = srclen;
1216         uint8_t *src;
1217
1218         for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
1219                         m = m->next)
1220                 offset -= rte_pktmbuf_data_len(m);
1221
1222         if (m == 0)
1223                 goto process_auth_err;
1224
1225         src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
1226
1227         l = rte_pktmbuf_data_len(m) - offset;
1228         if (srclen <= l) {
1229                 if (HMAC_Update(ctx, (unsigned char *)src, srclen) != 1)
1230                         goto process_auth_err;
1231                 goto process_auth_final;
1232         }
1233
1234         if (HMAC_Update(ctx, (unsigned char *)src, l) != 1)
1235                 goto process_auth_err;
1236
1237         n -= l;
1238
1239         for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
1240                 src = rte_pktmbuf_mtod(m, uint8_t *);
1241                 l = rte_pktmbuf_data_len(m) < n ? rte_pktmbuf_data_len(m) : n;
1242                 if (HMAC_Update(ctx, (unsigned char *)src, l) != 1)
1243                         goto process_auth_err;
1244                 n -= l;
1245         }
1246
1247 process_auth_final:
1248         if (HMAC_Final(ctx, dst, &dstlen) != 1)
1249                 goto process_auth_err;
1250
1251         if (unlikely(HMAC_Init_ex(ctx, NULL, 0, NULL, NULL) != 1))
1252                 goto process_auth_err;
1253
1254         return 0;
1255
1256 process_auth_err:
1257         OPENSSL_LOG(ERR, "Process openssl auth failed");
1258         return -EINVAL;
1259 }
1260
1261 /*----------------------------------------------------------------------------*/
1262
1263 /** Process auth/cipher combined operation */
1264 static void
1265 process_openssl_combined_op
1266                 (struct rte_crypto_op *op, struct openssl_session *sess,
1267                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1268 {
1269         /* cipher */
1270         uint8_t *dst = NULL, *iv, *tag, *aad;
1271         int srclen, aadlen, status = -1;
1272         uint32_t offset;
1273         uint8_t taglen;
1274
1275         /*
1276          * Segmented destination buffer is not supported for
1277          * encryption/decryption
1278          */
1279         if (!rte_pktmbuf_is_contiguous(mbuf_dst)) {
1280                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1281                 return;
1282         }
1283
1284         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1285                         sess->iv.offset);
1286         if (sess->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC) {
1287                 srclen = 0;
1288                 offset = op->sym->auth.data.offset;
1289                 aadlen = op->sym->auth.data.length;
1290                 aad = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
1291                                 op->sym->auth.data.offset);
1292                 tag = op->sym->auth.digest.data;
1293                 if (tag == NULL)
1294                         tag = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1295                                 offset + aadlen);
1296         } else {
1297                 srclen = op->sym->aead.data.length;
1298                 dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1299                                 op->sym->aead.data.offset);
1300                 offset = op->sym->aead.data.offset;
1301                 aad = op->sym->aead.aad.data;
1302                 aadlen = sess->auth.aad_length;
1303                 tag = op->sym->aead.digest.data;
1304                 if (tag == NULL)
1305                         tag = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1306                                 offset + srclen);
1307         }
1308
1309         taglen = sess->auth.digest_length;
1310
1311         if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
1312                 if (sess->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC ||
1313                                 sess->aead_algo == RTE_CRYPTO_AEAD_AES_GCM)
1314                         status = process_openssl_auth_encryption_gcm(
1315                                         mbuf_src, offset, srclen,
1316                                         aad, aadlen, iv,
1317                                         dst, tag, sess->cipher.ctx);
1318                 else
1319                         status = process_openssl_auth_encryption_ccm(
1320                                         mbuf_src, offset, srclen,
1321                                         aad, aadlen, iv,
1322                                         dst, tag, taglen, sess->cipher.ctx);
1323
1324         } else {
1325                 if (sess->auth.algo == RTE_CRYPTO_AUTH_AES_GMAC ||
1326                                 sess->aead_algo == RTE_CRYPTO_AEAD_AES_GCM)
1327                         status = process_openssl_auth_decryption_gcm(
1328                                         mbuf_src, offset, srclen,
1329                                         aad, aadlen, iv,
1330                                         dst, tag, sess->cipher.ctx);
1331                 else
1332                         status = process_openssl_auth_decryption_ccm(
1333                                         mbuf_src, offset, srclen,
1334                                         aad, aadlen, iv,
1335                                         dst, tag, taglen, sess->cipher.ctx);
1336         }
1337
1338         if (status != 0) {
1339                 if (status == (-EFAULT) &&
1340                                 sess->auth.operation ==
1341                                                 RTE_CRYPTO_AUTH_OP_VERIFY)
1342                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
1343                 else
1344                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1345         }
1346 }
1347
1348 /** Process cipher operation */
1349 static void
1350 process_openssl_cipher_op
1351                 (struct rte_crypto_op *op, struct openssl_session *sess,
1352                 struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
1353 {
1354         uint8_t *dst, *iv;
1355         int srclen, status;
1356
1357         /*
1358          * Segmented destination buffer is not supported for
1359          * encryption/decryption
1360          */
1361         if (!rte_pktmbuf_is_contiguous(mbuf_dst)) {
1362                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1363                 return;
1364         }
1365
1366         srclen = op->sym->cipher.data.length;
1367         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1368                         op->sym->cipher.data.offset);
1369
1370         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1371                         sess->iv.offset);
1372
1373         if (sess->cipher.mode == OPENSSL_CIPHER_LIB)
1374                 if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
1375                         status = process_openssl_cipher_encrypt(mbuf_src, dst,
1376                                         op->sym->cipher.data.offset, iv,
1377                                         srclen, sess->cipher.ctx);
1378                 else
1379                         status = process_openssl_cipher_decrypt(mbuf_src, dst,
1380                                         op->sym->cipher.data.offset, iv,
1381                                         srclen, sess->cipher.ctx);
1382         else
1383                 status = process_openssl_cipher_des3ctr(mbuf_src, dst,
1384                                 op->sym->cipher.data.offset, iv,
1385                                 sess->cipher.key.data, srclen,
1386                                 sess->cipher.ctx);
1387
1388         if (status != 0)
1389                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1390 }
1391
1392 /** Process cipher operation */
1393 static void
1394 process_openssl_docsis_bpi_op(struct rte_crypto_op *op,
1395                 struct openssl_session *sess, struct rte_mbuf *mbuf_src,
1396                 struct rte_mbuf *mbuf_dst)
1397 {
1398         uint8_t *src, *dst, *iv;
1399         uint8_t block_size, last_block_len;
1400         int srclen, status = 0;
1401
1402         srclen = op->sym->cipher.data.length;
1403         src = rte_pktmbuf_mtod_offset(mbuf_src, uint8_t *,
1404                         op->sym->cipher.data.offset);
1405         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1406                         op->sym->cipher.data.offset);
1407
1408         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1409                         sess->iv.offset);
1410
1411         block_size = DES_BLOCK_SIZE;
1412
1413         last_block_len = srclen % block_size;
1414         if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
1415                 /* Encrypt only with ECB mode XOR IV */
1416                 if (srclen < block_size) {
1417                         status = process_openssl_cipher_bpi_encrypt(src, dst,
1418                                         iv, srclen,
1419                                         sess->cipher.bpi_ctx);
1420                 } else {
1421                         srclen -= last_block_len;
1422                         /* Encrypt with the block aligned stream with CBC mode */
1423                         status = process_openssl_cipher_encrypt(mbuf_src, dst,
1424                                         op->sym->cipher.data.offset, iv,
1425                                         srclen, sess->cipher.ctx);
1426                         if (last_block_len) {
1427                                 /* Point at last block */
1428                                 dst += srclen;
1429                                 /*
1430                                  * IV is the last encrypted block from
1431                                  * the previous operation
1432                                  */
1433                                 iv = dst - block_size;
1434                                 src += srclen;
1435                                 srclen = last_block_len;
1436                                 /* Encrypt the last frame with ECB mode */
1437                                 status |= process_openssl_cipher_bpi_encrypt(src,
1438                                                 dst, iv,
1439                                                 srclen, sess->cipher.bpi_ctx);
1440                         }
1441                 }
1442         } else {
1443                 /* Decrypt only with ECB mode (encrypt, as it is same operation) */
1444                 if (srclen < block_size) {
1445                         status = process_openssl_cipher_bpi_encrypt(src, dst,
1446                                         iv,
1447                                         srclen,
1448                                         sess->cipher.bpi_ctx);
1449                 } else {
1450                         if (last_block_len) {
1451                                 /* Point at last block */
1452                                 dst += srclen - last_block_len;
1453                                 src += srclen - last_block_len;
1454                                 /*
1455                                  * IV is the last full block
1456                                  */
1457                                 iv = src - block_size;
1458                                 /*
1459                                  * Decrypt the last frame with ECB mode
1460                                  * (encrypt, as it is the same operation)
1461                                  */
1462                                 status = process_openssl_cipher_bpi_encrypt(src,
1463                                                 dst, iv,
1464                                                 last_block_len, sess->cipher.bpi_ctx);
1465                                 /* Prepare parameters for CBC mode op */
1466                                 iv = rte_crypto_op_ctod_offset(op, uint8_t *,
1467                                                 sess->iv.offset);
1468                                 dst += last_block_len - srclen;
1469                                 srclen -= last_block_len;
1470                         }
1471
1472                         /* Decrypt with CBC mode */
1473                         status |= process_openssl_cipher_decrypt(mbuf_src, dst,
1474                                         op->sym->cipher.data.offset, iv,
1475                                         srclen, sess->cipher.ctx);
1476                 }
1477         }
1478
1479         if (status != 0)
1480                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1481 }
1482
1483 /** Process auth operation */
1484 static void
1485 process_openssl_auth_op(struct openssl_qp *qp, struct rte_crypto_op *op,
1486                 struct openssl_session *sess, struct rte_mbuf *mbuf_src,
1487                 struct rte_mbuf *mbuf_dst)
1488 {
1489         uint8_t *dst;
1490         int srclen, status;
1491
1492         srclen = op->sym->auth.data.length;
1493
1494         if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY)
1495                 dst = qp->temp_digest;
1496         else {
1497                 dst = op->sym->auth.digest.data;
1498                 if (dst == NULL)
1499                         dst = rte_pktmbuf_mtod_offset(mbuf_dst, uint8_t *,
1500                                         op->sym->auth.data.offset +
1501                                         op->sym->auth.data.length);
1502         }
1503
1504         switch (sess->auth.mode) {
1505         case OPENSSL_AUTH_AS_AUTH:
1506                 status = process_openssl_auth(mbuf_src, dst,
1507                                 op->sym->auth.data.offset, NULL, NULL, srclen,
1508                                 sess->auth.auth.ctx, sess->auth.auth.evp_algo);
1509                 break;
1510         case OPENSSL_AUTH_AS_HMAC:
1511                 status = process_openssl_auth_hmac(mbuf_src, dst,
1512                                 op->sym->auth.data.offset, srclen,
1513                                 sess->auth.hmac.ctx);
1514                 break;
1515         default:
1516                 status = -1;
1517                 break;
1518         }
1519
1520         if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
1521                 if (memcmp(dst, op->sym->auth.digest.data,
1522                                 sess->auth.digest_length) != 0) {
1523                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
1524                 }
1525         }
1526
1527         if (status != 0)
1528                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1529 }
1530
1531 /** Process crypto operation for mbuf */
1532 static int
1533 process_op(struct openssl_qp *qp, struct rte_crypto_op *op,
1534                 struct openssl_session *sess)
1535 {
1536         struct rte_mbuf *msrc, *mdst;
1537         int retval;
1538
1539         msrc = op->sym->m_src;
1540         mdst = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
1541
1542         op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
1543
1544         switch (sess->chain_order) {
1545         case OPENSSL_CHAIN_ONLY_CIPHER:
1546                 process_openssl_cipher_op(op, sess, msrc, mdst);
1547                 break;
1548         case OPENSSL_CHAIN_ONLY_AUTH:
1549                 process_openssl_auth_op(qp, op, sess, msrc, mdst);
1550                 break;
1551         case OPENSSL_CHAIN_CIPHER_AUTH:
1552                 process_openssl_cipher_op(op, sess, msrc, mdst);
1553                 process_openssl_auth_op(qp, op, sess, mdst, mdst);
1554                 break;
1555         case OPENSSL_CHAIN_AUTH_CIPHER:
1556                 process_openssl_auth_op(qp, op, sess, msrc, mdst);
1557                 process_openssl_cipher_op(op, sess, msrc, mdst);
1558                 break;
1559         case OPENSSL_CHAIN_COMBINED:
1560                 process_openssl_combined_op(op, sess, msrc, mdst);
1561                 break;
1562         case OPENSSL_CHAIN_CIPHER_BPI:
1563                 process_openssl_docsis_bpi_op(op, sess, msrc, mdst);
1564                 break;
1565         default:
1566                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
1567                 break;
1568         }
1569
1570         /* Free session if a session-less crypto op */
1571         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
1572                 openssl_reset_session(sess);
1573                 memset(sess, 0, sizeof(struct openssl_session));
1574                 memset(op->sym->session, 0,
1575                                 rte_cryptodev_sym_get_header_session_size());
1576                 rte_mempool_put(qp->sess_mp, sess);
1577                 rte_mempool_put(qp->sess_mp, op->sym->session);
1578                 op->sym->session = NULL;
1579         }
1580
1581         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
1582                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
1583
1584         if (op->status != RTE_CRYPTO_OP_STATUS_ERROR)
1585                 retval = rte_ring_enqueue(qp->processed_ops, (void *)op);
1586         else
1587                 retval = -1;
1588
1589         return retval;
1590 }
1591
1592 /*
1593  *------------------------------------------------------------------------------
1594  * PMD Framework
1595  *------------------------------------------------------------------------------
1596  */
1597
1598 /** Enqueue burst */
1599 static uint16_t
1600 openssl_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
1601                 uint16_t nb_ops)
1602 {
1603         struct openssl_session *sess;
1604         struct openssl_qp *qp = queue_pair;
1605         int i, retval;
1606
1607         for (i = 0; i < nb_ops; i++) {
1608                 sess = get_session(qp, ops[i]);
1609                 if (unlikely(sess == NULL))
1610                         goto enqueue_err;
1611
1612                 retval = process_op(qp, ops[i], sess);
1613                 if (unlikely(retval < 0))
1614                         goto enqueue_err;
1615         }
1616
1617         qp->stats.enqueued_count += i;
1618         return i;
1619
1620 enqueue_err:
1621         qp->stats.enqueue_err_count++;
1622         return i;
1623 }
1624
1625 /** Dequeue burst */
1626 static uint16_t
1627 openssl_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
1628                 uint16_t nb_ops)
1629 {
1630         struct openssl_qp *qp = queue_pair;
1631
1632         unsigned int nb_dequeued = 0;
1633
1634         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
1635                         (void **)ops, nb_ops, NULL);
1636         qp->stats.dequeued_count += nb_dequeued;
1637
1638         return nb_dequeued;
1639 }
1640
1641 /** Create OPENSSL crypto device */
1642 static int
1643 cryptodev_openssl_create(const char *name,
1644                         struct rte_vdev_device *vdev,
1645                         struct rte_cryptodev_pmd_init_params *init_params)
1646 {
1647         struct rte_cryptodev *dev;
1648         struct openssl_private *internals;
1649
1650         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
1651         if (dev == NULL) {
1652                 OPENSSL_LOG(ERR, "failed to create cryptodev vdev");
1653                 goto init_error;
1654         }
1655
1656         dev->driver_id = cryptodev_driver_id;
1657         dev->dev_ops = rte_openssl_pmd_ops;
1658
1659         /* register rx/tx burst functions for data path */
1660         dev->dequeue_burst = openssl_pmd_dequeue_burst;
1661         dev->enqueue_burst = openssl_pmd_enqueue_burst;
1662
1663         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
1664                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
1665                         RTE_CRYPTODEV_FF_CPU_AESNI |
1666                         RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
1667                         RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT;
1668
1669         /* Set vector instructions mode supported */
1670         internals = dev->data->dev_private;
1671
1672         internals->max_nb_qpairs = init_params->max_nb_queue_pairs;
1673
1674         return 0;
1675
1676 init_error:
1677         OPENSSL_LOG(ERR, "driver %s: create failed",
1678                         init_params->name);
1679
1680         cryptodev_openssl_remove(vdev);
1681         return -EFAULT;
1682 }
1683
1684 /** Initialise OPENSSL crypto device */
1685 static int
1686 cryptodev_openssl_probe(struct rte_vdev_device *vdev)
1687 {
1688         struct rte_cryptodev_pmd_init_params init_params = {
1689                 "",
1690                 sizeof(struct openssl_private),
1691                 rte_socket_id(),
1692                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS
1693         };
1694         const char *name;
1695         const char *input_args;
1696
1697         name = rte_vdev_device_name(vdev);
1698         if (name == NULL)
1699                 return -EINVAL;
1700         input_args = rte_vdev_device_args(vdev);
1701
1702         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
1703
1704         return cryptodev_openssl_create(name, vdev, &init_params);
1705 }
1706
1707 /** Uninitialise OPENSSL crypto device */
1708 static int
1709 cryptodev_openssl_remove(struct rte_vdev_device *vdev)
1710 {
1711         struct rte_cryptodev *cryptodev;
1712         const char *name;
1713
1714         name = rte_vdev_device_name(vdev);
1715         if (name == NULL)
1716                 return -EINVAL;
1717
1718         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
1719         if (cryptodev == NULL)
1720                 return -ENODEV;
1721
1722         return rte_cryptodev_pmd_destroy(cryptodev);
1723 }
1724
1725 static struct rte_vdev_driver cryptodev_openssl_pmd_drv = {
1726         .probe = cryptodev_openssl_probe,
1727         .remove = cryptodev_openssl_remove
1728 };
1729
1730 static struct cryptodev_driver openssl_crypto_drv;
1731
1732 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_OPENSSL_PMD,
1733         cryptodev_openssl_pmd_drv);
1734 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_OPENSSL_PMD,
1735         "max_nb_queue_pairs=<int> "
1736         "socket_id=<int>");
1737 RTE_PMD_REGISTER_CRYPTO_DRIVER(openssl_crypto_drv,
1738                 cryptodev_openssl_pmd_drv.driver, cryptodev_driver_id);
1739
1740 RTE_INIT(openssl_init_log)
1741 {
1742         openssl_logtype_driver = rte_log_register("pmd.crypto.openssl");
1743 }