drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2015-2016 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 "rte_aesni_mb_pmd_private.h"
  43
  44 typedef void (*hash_one_block_t)(const void *data, void *digest);
  45 typedef void (*aes_keyexp_t)(const void *key, void *enc_exp_keys, void *dec_exp_keys);
  46
  47 /**
  48  * Calculate the authentication pre-computes
  49  *
  50  * @param one_block_hash        Function pointer to calculate digest on ipad/opad
  51  * @param ipad                  Inner pad output byte array
  52  * @param opad                  Outer pad output byte array
  53  * @param hkey                  Authentication key
  54  * @param hkey_len              Authentication key length
  55  * @param blocksize             Block size of selected hash algo
  56  */
  57 static void
  58 calculate_auth_precomputes(hash_one_block_t one_block_hash,
  59                 uint8_t *ipad, uint8_t *opad,
  60                 uint8_t *hkey, uint16_t hkey_len,
  61                 uint16_t blocksize)
  62 {
  63         unsigned i, length;
  64
  65         uint8_t ipad_buf[blocksize] __rte_aligned(16);
  66         uint8_t opad_buf[blocksize] __rte_aligned(16);
  67
  68         /* Setup inner and outer pads */
  69         memset(ipad_buf, HMAC_IPAD_VALUE, blocksize);
  70         memset(opad_buf, HMAC_OPAD_VALUE, blocksize);
  71
  72         /* XOR hash key with inner and outer pads */
  73         length = hkey_len > blocksize ? blocksize : hkey_len;
  74
  75         for (i = 0; i < length; i++) {
  76                 ipad_buf[i] ^= hkey[i];
  77                 opad_buf[i] ^= hkey[i];
  78         }
  79
  80         /* Compute partial hashes */
  81         (*one_block_hash)(ipad_buf, ipad);
  82         (*one_block_hash)(opad_buf, opad);
  83
  84         /* Clean up stack */
  85         memset(ipad_buf, 0, blocksize);
  86         memset(opad_buf, 0, blocksize);
  87 }
  88
  89 /** Get xform chain order */
  90 static enum aesni_mb_operation
  91 aesni_mb_get_chain_order(const struct rte_crypto_sym_xform *xform)
  92 {
  93         if (xform == NULL)
  94                 return AESNI_MB_OP_NOT_SUPPORTED;
  95
  96         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  97                 if (xform->next == NULL)
  98                         return AESNI_MB_OP_CIPHER_ONLY;
  99                 if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
 100                         return AESNI_MB_OP_CIPHER_HASH;
 101         }
 102
 103         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
 104                 if (xform->next == NULL)
 105                         return AESNI_MB_OP_HASH_ONLY;
 106                 if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
 107                         return AESNI_MB_OP_HASH_CIPHER;
 108         }
 109
 110         return AESNI_MB_OP_NOT_SUPPORTED;
 111 }
 112
 113 /** Set session authentication parameters */
 114 static int
 115 aesni_mb_set_session_auth_parameters(const struct aesni_mb_op_fns *mb_ops,
 116                 struct aesni_mb_session *sess,
 117                 const struct rte_crypto_sym_xform *xform)
 118 {
 119         hash_one_block_t hash_oneblock_fn;
 120
 121         if (xform == NULL) {
 122                 sess->auth.algo = NULL_HASH;
 123                 return 0;
 124         }
 125
 126         if (xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) {
 127                 MB_LOG_ERR("Crypto xform struct not of type auth");
 128                 return -1;
 129         }
 130
 131         /* Select auth generate/verify */
 132         sess->auth.operation = xform->auth.op;
 133
 134         /* Set Authentication Parameters */
 135         if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
 136                 sess->auth.algo = AES_XCBC;
 137                 (*mb_ops->aux.keyexp.aes_xcbc)(xform->auth.key.data,
 138                                 sess->auth.xcbc.k1_expanded,
 139                                 sess->auth.xcbc.k2, sess->auth.xcbc.k3);
 140                 return 0;
 141         }
 142
 143         switch (xform->auth.algo) {
 144         case RTE_CRYPTO_AUTH_MD5_HMAC:
 145                 sess->auth.algo = MD5;
 146                 hash_oneblock_fn = mb_ops->aux.one_block.md5;
 147                 break;
 148         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 149                 sess->auth.algo = SHA1;
 150                 hash_oneblock_fn = mb_ops->aux.one_block.sha1;
 151                 break;
 152         case RTE_CRYPTO_AUTH_SHA224_HMAC:
 153                 sess->auth.algo = SHA_224;
 154                 hash_oneblock_fn = mb_ops->aux.one_block.sha224;
 155                 break;
 156         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 157                 sess->auth.algo = SHA_256;
 158                 hash_oneblock_fn = mb_ops->aux.one_block.sha256;
 159                 break;
 160         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 161                 sess->auth.algo = SHA_384;
 162                 hash_oneblock_fn = mb_ops->aux.one_block.sha384;
 163                 break;
 164         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 165                 sess->auth.algo = SHA_512;
 166                 hash_oneblock_fn = mb_ops->aux.one_block.sha512;
 167                 break;
 168         default:
 169                 MB_LOG_ERR("Unsupported authentication algorithm selection");
 170                 return -1;
 171         }
 172
 173         /* Calculate Authentication precomputes */
 174         calculate_auth_precomputes(hash_oneblock_fn,
 175                         sess->auth.pads.inner, sess->auth.pads.outer,
 176                         xform->auth.key.data,
 177                         xform->auth.key.length,
 178                         get_auth_algo_blocksize(sess->auth.algo));
 179
 180         return 0;
 181 }
 182
 183 /** Set session cipher parameters */
 184 static int
 185 aesni_mb_set_session_cipher_parameters(const struct aesni_mb_op_fns *mb_ops,
 186                 struct aesni_mb_session *sess,
 187                 const struct rte_crypto_sym_xform *xform)
 188 {
 189         aes_keyexp_t aes_keyexp_fn;
 190
 191         if (xform == NULL) {
 192                 sess->cipher.mode = NULL_CIPHER;
 193                 return 0;
 194         }
 195
 196         if (xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) {
 197                 MB_LOG_ERR("Crypto xform struct not of type cipher");
 198                 return -1;
 199         }
 200
 201         /* Select cipher direction */
 202         switch (xform->cipher.op) {
 203         case RTE_CRYPTO_CIPHER_OP_ENCRYPT:
 204                 sess->cipher.direction = ENCRYPT;
 205                 break;
 206         case RTE_CRYPTO_CIPHER_OP_DECRYPT:
 207                 sess->cipher.direction = DECRYPT;
 208                 break;
 209         default:
 210                 MB_LOG_ERR("Unsupported cipher operation parameter");
 211                 return -1;
 212         }
 213
 214         /* Select cipher mode */
 215         switch (xform->cipher.algo) {
 216         case RTE_CRYPTO_CIPHER_AES_CBC:
 217                 sess->cipher.mode = CBC;
 218                 break;
 219         case RTE_CRYPTO_CIPHER_AES_CTR:
 220                 sess->cipher.mode = CNTR;
 221                 break;
 222         case RTE_CRYPTO_CIPHER_AES_DOCSISBPI:
 223                 sess->cipher.mode = DOCSIS_SEC_BPI;
 224                 break;
 225         default:
 226                 MB_LOG_ERR("Unsupported cipher mode parameter");
 227                 return -1;
 228         }
 229
 230         /* Check key length and choose key expansion function */
 231         switch (xform->cipher.key.length) {
 232         case AES_128_BYTES:
 233                 sess->cipher.key_length_in_bytes = AES_128_BYTES;
 234                 aes_keyexp_fn = mb_ops->aux.keyexp.aes128;
 235                 break;
 236         case AES_192_BYTES:
 237                 sess->cipher.key_length_in_bytes = AES_192_BYTES;
 238                 aes_keyexp_fn = mb_ops->aux.keyexp.aes192;
 239                 break;
 240         case AES_256_BYTES:
 241                 sess->cipher.key_length_in_bytes = AES_256_BYTES;
 242                 aes_keyexp_fn = mb_ops->aux.keyexp.aes256;
 243                 break;
 244         default:
 245                 MB_LOG_ERR("Unsupported cipher key length");
 246                 return -1;
 247         }
 248
 249         /* Expanded cipher keys */
 250         (*aes_keyexp_fn)(xform->cipher.key.data,
 251                         sess->cipher.expanded_aes_keys.encode,
 252                         sess->cipher.expanded_aes_keys.decode);
 253
 254         return 0;
 255 }
 256
 257 /** Parse crypto xform chain and set private session parameters */
 258 int
 259 aesni_mb_set_session_parameters(const struct aesni_mb_op_fns *mb_ops,
 260                 struct aesni_mb_session *sess,
 261                 const struct rte_crypto_sym_xform *xform)
 262 {
 263         const struct rte_crypto_sym_xform *auth_xform = NULL;
 264         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 265
 266         /* Select Crypto operation - hash then cipher / cipher then hash */
 267         switch (aesni_mb_get_chain_order(xform)) {
 268         case AESNI_MB_OP_HASH_CIPHER:
 269                 sess->chain_order = HASH_CIPHER;
 270                 auth_xform = xform;
 271                 cipher_xform = xform->next;
 272                 break;
 273         case AESNI_MB_OP_CIPHER_HASH:
 274                 sess->chain_order = CIPHER_HASH;
 275                 auth_xform = xform->next;
 276                 cipher_xform = xform;
 277                 break;
 278         case AESNI_MB_OP_HASH_ONLY:
 279                 sess->chain_order = HASH_CIPHER;
 280                 auth_xform = xform;
 281                 cipher_xform = NULL;
 282                 break;
 283         case AESNI_MB_OP_CIPHER_ONLY:
 284                 /*
 285                  * Multi buffer library operates only at two modes,
 286                  * CIPHER_HASH and HASH_CIPHER. When doing ciphering only,
 287                  * chain order depends on cipher operation: encryption is always
 288                  * the first operation and decryption the last one.
 289                  */
 290                 if (xform->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
 291                         sess->chain_order = CIPHER_HASH;
 292                 else
 293                         sess->chain_order = HASH_CIPHER;
 294                 auth_xform = NULL;
 295                 cipher_xform = xform;
 296                 break;
 297         case AESNI_MB_OP_NOT_SUPPORTED:
 298         default:
 299                 MB_LOG_ERR("Unsupported operation chain order parameter");
 300                 return -1;
 301         }
 302
 303         if (aesni_mb_set_session_auth_parameters(mb_ops, sess, auth_xform)) {
 304                 MB_LOG_ERR("Invalid/unsupported authentication parameters");
 305                 return -1;
 306         }
 307
 308         if (aesni_mb_set_session_cipher_parameters(mb_ops, sess,
 309                         cipher_xform)) {
 310                 MB_LOG_ERR("Invalid/unsupported cipher parameters");
 311                 return -1;
 312         }
 313         return 0;
 314 }
 315
 316 /**
 317  * burst enqueue, place crypto operations on ingress queue for processing.
 318  *
 319  * @param __qp         Queue Pair to process
 320  * @param ops          Crypto operations for processing
 321  * @param nb_ops       Number of crypto operations for processing
 322  *
 323  * @return
 324  * - Number of crypto operations enqueued
 325  */
 326 static uint16_t
 327 aesni_mb_pmd_enqueue_burst(void *__qp, struct rte_crypto_op **ops,
 328                 uint16_t nb_ops)
 329 {
 330         struct aesni_mb_qp *qp = __qp;
 331
 332         unsigned int nb_enqueued;
 333
 334         nb_enqueued = rte_ring_enqueue_burst(qp->ingress_queue,
 335                         (void **)ops, nb_ops, NULL);
 336
 337         qp->stats.enqueued_count += nb_enqueued;
 338
 339         return nb_enqueued;
 340 }
 341
 342 /** Get multi buffer session */
 343 static inline struct aesni_mb_session *
 344 get_session(struct aesni_mb_qp *qp, struct rte_crypto_op *op)
 345 {
 346         struct aesni_mb_session *sess = NULL;
 347
 348         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
 349                 if (unlikely(op->sym->session->dev_type !=
 350                                 RTE_CRYPTODEV_AESNI_MB_PMD)) {
 351                         return NULL;
 352                 }
 353
 354                 sess = (struct aesni_mb_session *)op->sym->session->_private;
 355         } else  {
 356                 void *_sess = NULL;
 357
 358                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 359                         return NULL;
 360
 361                 sess = (struct aesni_mb_session *)
 362                         ((struct rte_cryptodev_sym_session *)_sess)->_private;
 363
 364                 if (unlikely(aesni_mb_set_session_parameters(qp->op_fns,
 365                                 sess, op->sym->xform) != 0)) {
 366                         rte_mempool_put(qp->sess_mp, _sess);
 367                         sess = NULL;
 368                 }
 369                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 370         }
 371
 372         return sess;
 373 }
 374
 375 /**
 376  * Process a crypto operation and complete a JOB_AES_HMAC job structure for
 377  * submission to the multi buffer library for processing.
 378  *
 379  * @param       qp      queue pair
 380  * @param       job     JOB_AES_HMAC structure to fill
 381  * @param       m       mbuf to process
 382  *
 383  * @return
 384  * - Completed JOB_AES_HMAC structure pointer on success
 385  * - NULL pointer if completion of JOB_AES_HMAC structure isn't possible
 386  */
 387 static inline int
 388 set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 389                 struct rte_crypto_op *op)
 390 {
 391         struct rte_mbuf *m_src = op->sym->m_src, *m_dst;
 392         struct aesni_mb_session *session;
 393         uint16_t m_offset = 0;
 394
 395         session = get_session(qp, op);
 396         if (session == NULL) {
 397                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 398                 return -1;
 399         }
 400         op->status = RTE_CRYPTO_OP_STATUS_ENQUEUED;
 401
 402         /* Set crypto operation */
 403         job->chain_order = session->chain_order;
 404
 405         /* Set cipher parameters */
 406         job->cipher_direction = session->cipher.direction;
 407         job->cipher_mode = session->cipher.mode;
 408
 409         job->aes_key_len_in_bytes = session->cipher.key_length_in_bytes;
 410         job->aes_enc_key_expanded = session->cipher.expanded_aes_keys.encode;
 411         job->aes_dec_key_expanded = session->cipher.expanded_aes_keys.decode;
 412
 413
 414         /* Set authentication parameters */
 415         job->hash_alg = session->auth.algo;
 416         if (job->hash_alg == AES_XCBC) {
 417                 job->_k1_expanded = session->auth.xcbc.k1_expanded;
 418                 job->_k2 = session->auth.xcbc.k2;
 419                 job->_k3 = session->auth.xcbc.k3;
 420         } else {
 421                 job->hashed_auth_key_xor_ipad = session->auth.pads.inner;
 422                 job->hashed_auth_key_xor_opad = session->auth.pads.outer;
 423         }
 424
 425         /* Mutable crypto operation parameters */
 426         if (op->sym->m_dst) {
 427                 m_src = m_dst = op->sym->m_dst;
 428
 429                 /* append space for output data to mbuf */
 430                 char *odata = rte_pktmbuf_append(m_dst,
 431                                 rte_pktmbuf_data_len(op->sym->m_src));
 432                 if (odata == NULL) {
 433                         MB_LOG_ERR("failed to allocate space in destination "
 434                                         "mbuf for source data");
 435                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 436                         return -1;
 437                 }
 438
 439                 memcpy(odata, rte_pktmbuf_mtod(op->sym->m_src, void*),
 440                                 rte_pktmbuf_data_len(op->sym->m_src));
 441         } else {
 442                 m_dst = m_src;
 443                 m_offset = op->sym->cipher.data.offset;
 444         }
 445
 446         /* Set digest output location */
 447         if (job->hash_alg != NULL_HASH &&
 448                         session->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
 449                 job->auth_tag_output = (uint8_t *)rte_pktmbuf_append(m_dst,
 450                                 get_digest_byte_length(job->hash_alg));
 451
 452                 if (job->auth_tag_output == NULL) {
 453                         MB_LOG_ERR("failed to allocate space in output mbuf "
 454                                         "for temp digest");
 455                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 456                         return -1;
 457                 }
 458
 459                 memset(job->auth_tag_output, 0,
 460                                 sizeof(get_digest_byte_length(job->hash_alg)));
 461
 462         } else {
 463                 job->auth_tag_output = op->sym->auth.digest.data;
 464         }
 465
 466         /*
 467          * Multi-buffer library current only support returning a truncated
 468          * digest length as specified in the relevant IPsec RFCs
 469          */
 470         job->auth_tag_output_len_in_bytes =
 471                         get_truncated_digest_byte_length(job->hash_alg);
 472
 473         /* Set IV parameters */
 474         job->iv = op->sym->cipher.iv.data;
 475         job->iv_len_in_bytes = op->sym->cipher.iv.length;
 476
 477         /* Data  Parameter */
 478         job->src = rte_pktmbuf_mtod(m_src, uint8_t *);
 479         job->dst = rte_pktmbuf_mtod_offset(m_dst, uint8_t *, m_offset);
 480
 481         job->cipher_start_src_offset_in_bytes = op->sym->cipher.data.offset;
 482         job->msg_len_to_cipher_in_bytes = op->sym->cipher.data.length;
 483
 484         job->hash_start_src_offset_in_bytes = op->sym->auth.data.offset;
 485         job->msg_len_to_hash_in_bytes = op->sym->auth.data.length;
 486
 487         /* Set user data to be crypto operation data struct */
 488         job->user_data = op;
 489         job->user_data2 = m_dst;
 490
 491         return 0;
 492 }
 493
 494 static inline void
 495 verify_digest(JOB_AES_HMAC *job, struct rte_crypto_op *op) {
 496         struct rte_mbuf *m_dst = (struct rte_mbuf *)job->user_data2;
 497
 498         /* Verify digest if required */
 499         if (memcmp(job->auth_tag_output, op->sym->auth.digest.data,
 500                         job->auth_tag_output_len_in_bytes) != 0)
 501                 op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 502
 503         /* trim area used for digest from mbuf */
 504         rte_pktmbuf_trim(m_dst, get_digest_byte_length(job->hash_alg));
 505 }
 506
 507 /**
 508  * Process a completed job and return rte_mbuf which job processed
 509  *
 510  * @param job   JOB_AES_HMAC job to process
 511  *
 512  * @return
 513  * - Returns processed mbuf which is trimmed of output digest used in
 514  * verification of supplied digest in the case of a HASH_CIPHER operation
 515  * - Returns NULL on invalid job
 516  */
 517 static inline struct rte_crypto_op *
 518 post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 519 {
 520         struct rte_crypto_op *op = (struct rte_crypto_op *)job->user_data;
 521
 522         struct aesni_mb_session *sess;
 523
 524         if (unlikely(op->status == RTE_CRYPTO_OP_STATUS_ENQUEUED)) {
 525                 switch (job->status) {
 526                 case STS_COMPLETED:
 527                         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 528
 529                         if (job->hash_alg != NULL_HASH) {
 530                                 sess = (struct aesni_mb_session *)
 531                                                 op->sym->session->_private;
 532
 533                                 if (sess->auth.operation ==
 534                                                 RTE_CRYPTO_AUTH_OP_VERIFY)
 535                                         verify_digest(job, op);
 536                         }
 537                         break;
 538                 default:
 539                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 540                 }
 541         }
 542
 543         /* Free session if a session-less crypto op */
 544         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 545                 rte_mempool_put(qp->sess_mp, op->sym->session);
 546                 op->sym->session = NULL;
 547         }
 548
 549         return op;
 550 }
 551
 552 /**
 553  * Process a completed JOB_AES_HMAC job and keep processing jobs until
 554  * get_completed_job return NULL
 555  *
 556  * @param qp            Queue Pair to process
 557  * @param job           JOB_AES_HMAC job
 558  *
 559  * @return
 560  * - Number of processed jobs
 561  */
 562 static unsigned
 563 handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job,
 564                 struct rte_crypto_op **ops, uint16_t nb_ops)
 565 {
 566         struct rte_crypto_op *op = NULL;
 567         unsigned processed_jobs = 0;
 568
 569         while (job != NULL && processed_jobs < nb_ops) {
 570                 op = post_process_mb_job(qp, job);
 571
 572                 if (op) {
 573                         ops[processed_jobs++] = op;
 574                         qp->stats.dequeued_count++;
 575                 } else {
 576                         qp->stats.dequeue_err_count++;
 577                         break;
 578                 }
 579
 580                 job = (*qp->op_fns->job.get_completed_job)(&qp->mb_mgr);
 581         }
 582
 583         return processed_jobs;
 584 }
 585
 586 static inline uint16_t
 587 flush_mb_mgr(struct aesni_mb_qp *qp, struct rte_crypto_op **ops,
 588                 uint16_t nb_ops)
 589 {
 590         int processed_ops = 0;
 591
 592         /* Flush the remaining jobs */
 593         JOB_AES_HMAC *job = (*qp->op_fns->job.flush_job)(&qp->mb_mgr);
 594
 595         if (job)
 596                 processed_ops += handle_completed_jobs(qp, job,
 597                                 &ops[processed_ops], nb_ops - processed_ops);
 598
 599         return processed_ops;
 600 }
 601
 602 static inline JOB_AES_HMAC *
 603 set_job_null_op(JOB_AES_HMAC *job)
 604 {
 605         job->chain_order = HASH_CIPHER;
 606         job->cipher_mode = NULL_CIPHER;
 607         job->hash_alg = NULL_HASH;
 608         job->cipher_direction = DECRYPT;
 609
 610         return job;
 611 }
 612
 613 static uint16_t
 614 aesni_mb_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
 615                 uint16_t nb_ops)
 616 {
 617         struct aesni_mb_qp *qp = queue_pair;
 618
 619         struct rte_crypto_op *op;
 620         JOB_AES_HMAC *job;
 621
 622         int retval, processed_jobs = 0;
 623
 624         do {
 625                 /* Get next operation to process from ingress queue */
 626                 retval = rte_ring_dequeue(qp->ingress_queue, (void **)&op);
 627                 if (retval < 0)
 628                         break;
 629
 630                 /* Get next free mb job struct from mb manager */
 631                 job = (*qp->op_fns->job.get_next)(&qp->mb_mgr);
 632                 if (unlikely(job == NULL)) {
 633                         /* if no free mb job structs we need to flush mb_mgr */
 634                         processed_jobs += flush_mb_mgr(qp,
 635                                         &ops[processed_jobs],
 636                                         (nb_ops - processed_jobs) - 1);
 637
 638                         job = (*qp->op_fns->job.get_next)(&qp->mb_mgr);
 639                 }
 640
 641                 retval = set_mb_job_params(job, qp, op);
 642                 if (unlikely(retval != 0)) {
 643                         qp->stats.dequeue_err_count++;
 644                         set_job_null_op(job);
 645                 }
 646
 647                 /* Submit job to multi-buffer for processing */
 648                 job = (*qp->op_fns->job.submit)(&qp->mb_mgr);
 649
 650                 /*
 651                  * If submit returns a processed job then handle it,
 652                  * before submitting subsequent jobs
 653                  */
 654                 if (job)
 655                         processed_jobs += handle_completed_jobs(qp, job,
 656                                         &ops[processed_jobs],
 657                                         nb_ops - processed_jobs);
 658
 659         } while (processed_jobs < nb_ops);
 660
 661         if (processed_jobs < 1)
 662                 processed_jobs += flush_mb_mgr(qp,
 663                                 &ops[processed_jobs],
 664                                 nb_ops - processed_jobs);
 665
 666         return processed_jobs;
 667 }
 668
 669 static int cryptodev_aesni_mb_remove(struct rte_vdev_device *vdev);
 670
 671 static int
 672 cryptodev_aesni_mb_create(const char *name,
 673                         struct rte_vdev_device *vdev,
 674                         struct rte_crypto_vdev_init_params *init_params)
 675 {
 676         struct rte_cryptodev *dev;
 677         struct aesni_mb_private *internals;
 678         enum aesni_mb_vector_mode vector_mode;
 679
 680         if (init_params->name[0] == '\0')
 681                 snprintf(init_params->name, sizeof(init_params->name),
 682                                 "%s", name);
 683
 684         /* Check CPU for supported vector instruction set */
 685         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
 686                 vector_mode = RTE_AESNI_MB_AVX512;
 687         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 688                 vector_mode = RTE_AESNI_MB_AVX2;
 689         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
 690                 vector_mode = RTE_AESNI_MB_AVX;
 691         else
 692                 vector_mode = RTE_AESNI_MB_SSE;
 693
 694         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 695                         sizeof(struct aesni_mb_private), init_params->socket_id,
 696                         vdev);
 697         if (dev == NULL) {
 698                 MB_LOG_ERR("failed to create cryptodev vdev");
 699                 goto init_error;
 700         }
 701
 702         dev->dev_type = RTE_CRYPTODEV_AESNI_MB_PMD;
 703         dev->dev_ops = rte_aesni_mb_pmd_ops;
 704
 705         /* register rx/tx burst functions for data path */
 706         dev->dequeue_burst = aesni_mb_pmd_dequeue_burst;
 707         dev->enqueue_burst = aesni_mb_pmd_enqueue_burst;
 708
 709         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 710                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 711                         RTE_CRYPTODEV_FF_CPU_AESNI;
 712
 713         switch (vector_mode) {
 714         case RTE_AESNI_MB_SSE:
 715                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 716                 break;
 717         case RTE_AESNI_MB_AVX:
 718                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX;
 719                 break;
 720         case RTE_AESNI_MB_AVX2:
 721                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2;
 722                 break;
 723         case RTE_AESNI_MB_AVX512:
 724                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX512;
 725                 break;
 726         default:
 727                 break;
 728         }
 729
 730         /* Set vector instructions mode supported */
 731         internals = dev->data->dev_private;
 732
 733         internals->vector_mode = vector_mode;
 734         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 735         internals->max_nb_sessions = init_params->max_nb_sessions;
 736
 737         return 0;
 738 init_error:
 739         MB_LOG_ERR("driver %s: cryptodev_aesni_create failed",
 740                         init_params->name);
 741
 742         cryptodev_aesni_mb_remove(vdev);
 743         return -EFAULT;
 744 }
 745
 746 static int
 747 cryptodev_aesni_mb_probe(struct rte_vdev_device *vdev)
 748 {
 749         struct rte_crypto_vdev_init_params init_params = {
 750                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 751                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 752                 rte_socket_id(),
 753                 ""
 754         };
 755         const char *name;
 756         const char *input_args;
 757
 758         name = rte_vdev_device_name(vdev);
 759         if (name == NULL)
 760                 return -EINVAL;
 761         input_args = rte_vdev_device_args(vdev);
 762         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 763
 764         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 765                         init_params.socket_id);
 766         if (init_params.name[0] != '\0')
 767                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 768                         init_params.name);
 769         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 770                         init_params.max_nb_queue_pairs);
 771         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 772                         init_params.max_nb_sessions);
 773
 774         return cryptodev_aesni_mb_create(name, vdev, &init_params);
 775 }
 776
 777 static int
 778 cryptodev_aesni_mb_remove(struct rte_vdev_device *vdev)
 779 {
 780         const char *name;
 781
 782         name = rte_vdev_device_name(vdev);
 783         if (name == NULL)
 784                 return -EINVAL;
 785
 786         RTE_LOG(INFO, PMD, "Closing AESNI crypto device %s on numa socket %u\n",
 787                         name, rte_socket_id());
 788
 789         return 0;
 790 }
 791
 792 static struct rte_vdev_driver cryptodev_aesni_mb_pmd_drv = {
 793         .probe = cryptodev_aesni_mb_probe,
 794         .remove = cryptodev_aesni_mb_remove
 795 };
 796
 797 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_AESNI_MB_PMD, cryptodev_aesni_mb_pmd_drv);
 798 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_AESNI_MB_PMD, cryptodev_aesni_mb_pmd);
 799 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_AESNI_MB_PMD,
 800         "max_nb_queue_pairs=<int> "
 801         "max_nb_sessions=<int> "
 802         "socket_id=<int>");