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_dev.h>
  38 #include <rte_malloc.h>
  39 #include <rte_cpuflags.h>
  40 #include <rte_mbuf_offload.h>
  41
  42 #include "rte_aesni_mb_pmd_private.h"
  43
  44 /**
  45  * Global static parameter used to create a unique name for each AES-NI multi
  46  * buffer crypto device.
  47  */
  48 static unsigned unique_name_id;
  49
  50 static inline int
  51 create_unique_device_name(char *name, size_t size)
  52 {
  53         int ret;
  54
  55         if (name == NULL)
  56                 return -EINVAL;
  57
  58         ret = snprintf(name, size, "%s_%u", CRYPTODEV_NAME_AESNI_MB_PMD,
  59                         unique_name_id++);
  60         if (ret < 0)
  61                 return ret;
  62         return 0;
  63 }
  64
  65 typedef void (*hash_one_block_t)(void *data, void *digest);
  66 typedef void (*aes_keyexp_t)(void *key, void *enc_exp_keys, void *dec_exp_keys);
  67
  68 /**
  69  * Calculate the authentication pre-computes
  70  *
  71  * @param one_block_hash        Function pointer to calculate digest on ipad/opad
  72  * @param ipad                  Inner pad output byte array
  73  * @param opad                  Outer pad output byte array
  74  * @param hkey                  Authentication key
  75  * @param hkey_len              Authentication key length
  76  * @param blocksize             Block size of selected hash algo
  77  */
  78 static void
  79 calculate_auth_precomputes(hash_one_block_t one_block_hash,
  80                 uint8_t *ipad, uint8_t *opad,
  81                 uint8_t *hkey, uint16_t hkey_len,
  82                 uint16_t blocksize)
  83 {
  84         unsigned i, length;
  85
  86         uint8_t ipad_buf[blocksize] __rte_aligned(16);
  87         uint8_t opad_buf[blocksize] __rte_aligned(16);
  88
  89         /* Setup inner and outer pads */
  90         memset(ipad_buf, HMAC_IPAD_VALUE, blocksize);
  91         memset(opad_buf, HMAC_OPAD_VALUE, blocksize);
  92
  93         /* XOR hash key with inner and outer pads */
  94         length = hkey_len > blocksize ? blocksize : hkey_len;
  95
  96         for (i = 0; i < length; i++) {
  97                 ipad_buf[i] ^= hkey[i];
  98                 opad_buf[i] ^= hkey[i];
  99         }
 100
 101         /* Compute partial hashes */
 102         (*one_block_hash)(ipad_buf, ipad);
 103         (*one_block_hash)(opad_buf, opad);
 104
 105         /* Clean up stack */
 106         memset(ipad_buf, 0, blocksize);
 107         memset(opad_buf, 0, blocksize);
 108 }
 109
 110 /** Get xform chain order */
 111 static int
 112 aesni_mb_get_chain_order(const struct rte_crypto_sym_xform *xform)
 113 {
 114         /*
 115          * Multi-buffer only supports HASH_CIPHER or CIPHER_HASH chained
 116          * operations, all other options are invalid, so we must have exactly
 117          * 2 xform structs chained together
 118          */
 119         if (xform->next == NULL || xform->next->next != NULL)
 120                 return -1;
 121
 122         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH &&
 123                         xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
 124                 return HASH_CIPHER;
 125
 126         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
 127                                 xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
 128                 return CIPHER_HASH;
 129
 130         return -1;
 131 }
 132
 133 /** Set session authentication parameters */
 134 static int
 135 aesni_mb_set_session_auth_parameters(const struct aesni_mb_ops *mb_ops,
 136                 struct aesni_mb_session *sess,
 137                 const struct rte_crypto_sym_xform *xform)
 138 {
 139         hash_one_block_t hash_oneblock_fn;
 140
 141         if (xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) {
 142                 MB_LOG_ERR("Crypto xform struct not of type auth");
 143                 return -1;
 144         }
 145
 146         /* Set Authentication Parameters */
 147         if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
 148                 sess->auth.algo = AES_XCBC;
 149                 (*mb_ops->aux.keyexp.aes_xcbc)(xform->auth.key.data,
 150                                 sess->auth.xcbc.k1_expanded,
 151                                 sess->auth.xcbc.k2, sess->auth.xcbc.k3);
 152                 return 0;
 153         }
 154
 155         switch (xform->auth.algo) {
 156         case RTE_CRYPTO_AUTH_MD5_HMAC:
 157                 sess->auth.algo = MD5;
 158                 hash_oneblock_fn = mb_ops->aux.one_block.md5;
 159                 break;
 160         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 161                 sess->auth.algo = SHA1;
 162                 hash_oneblock_fn = mb_ops->aux.one_block.sha1;
 163                 break;
 164         case RTE_CRYPTO_AUTH_SHA224_HMAC:
 165                 sess->auth.algo = SHA_224;
 166                 hash_oneblock_fn = mb_ops->aux.one_block.sha224;
 167                 break;
 168         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 169                 sess->auth.algo = SHA_256;
 170                 hash_oneblock_fn = mb_ops->aux.one_block.sha256;
 171                 break;
 172         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 173                 sess->auth.algo = SHA_384;
 174                 hash_oneblock_fn = mb_ops->aux.one_block.sha384;
 175                 break;
 176         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 177                 sess->auth.algo = SHA_512;
 178                 hash_oneblock_fn = mb_ops->aux.one_block.sha512;
 179                 break;
 180         default:
 181                 MB_LOG_ERR("Unsupported authentication algorithm selection");
 182                 return -1;
 183         }
 184
 185         /* Calculate Authentication precomputes */
 186         calculate_auth_precomputes(hash_oneblock_fn,
 187                         sess->auth.pads.inner, sess->auth.pads.outer,
 188                         xform->auth.key.data,
 189                         xform->auth.key.length,
 190                         get_auth_algo_blocksize(sess->auth.algo));
 191
 192         return 0;
 193 }
 194
 195 /** Set session cipher parameters */
 196 static int
 197 aesni_mb_set_session_cipher_parameters(const struct aesni_mb_ops *mb_ops,
 198                 struct aesni_mb_session *sess,
 199                 const struct rte_crypto_sym_xform *xform)
 200 {
 201         aes_keyexp_t aes_keyexp_fn;
 202
 203         if (xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) {
 204                 MB_LOG_ERR("Crypto xform struct not of type cipher");
 205                 return -1;
 206         }
 207
 208         /* Select cipher direction */
 209         switch (xform->cipher.op) {
 210         case RTE_CRYPTO_CIPHER_OP_ENCRYPT:
 211                 sess->cipher.direction = ENCRYPT;
 212                 break;
 213         case RTE_CRYPTO_CIPHER_OP_DECRYPT:
 214                 sess->cipher.direction = DECRYPT;
 215                 break;
 216         default:
 217                 MB_LOG_ERR("Unsupported cipher operation parameter");
 218                 return -1;
 219         }
 220
 221         /* Select cipher mode */
 222         switch (xform->cipher.algo) {
 223         case RTE_CRYPTO_CIPHER_AES_CBC:
 224                 sess->cipher.mode = CBC;
 225                 break;
 226         default:
 227                 MB_LOG_ERR("Unsupported cipher mode parameter");
 228                 return -1;
 229         }
 230
 231         /* Check key length and choose key expansion function */
 232         switch (xform->cipher.key.length) {
 233         case AES_128_BYTES:
 234                 sess->cipher.key_length_in_bytes = AES_128_BYTES;
 235                 aes_keyexp_fn = mb_ops->aux.keyexp.aes128;
 236                 break;
 237         case AES_192_BYTES:
 238                 sess->cipher.key_length_in_bytes = AES_192_BYTES;
 239                 aes_keyexp_fn = mb_ops->aux.keyexp.aes192;
 240                 break;
 241         case AES_256_BYTES:
 242                 sess->cipher.key_length_in_bytes = AES_256_BYTES;
 243                 aes_keyexp_fn = mb_ops->aux.keyexp.aes256;
 244                 break;
 245         default:
 246                 MB_LOG_ERR("Unsupported cipher key length");
 247                 return -1;
 248         }
 249
 250         /* Expanded cipher keys */
 251         (*aes_keyexp_fn)(xform->cipher.key.data,
 252                         sess->cipher.expanded_aes_keys.encode,
 253                         sess->cipher.expanded_aes_keys.decode);
 254
 255         return 0;
 256 }
 257
 258 /** Parse crypto xform chain and set private session parameters */
 259 int
 260 aesni_mb_set_session_parameters(const struct aesni_mb_ops *mb_ops,
 261                 struct aesni_mb_session *sess,
 262                 const struct rte_crypto_sym_xform *xform)
 263 {
 264         const struct rte_crypto_sym_xform *auth_xform = NULL;
 265         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 266
 267         /* Select Crypto operation - hash then cipher / cipher then hash */
 268         switch (aesni_mb_get_chain_order(xform)) {
 269         case HASH_CIPHER:
 270                 sess->chain_order = HASH_CIPHER;
 271                 auth_xform = xform;
 272                 cipher_xform = xform->next;
 273                 break;
 274         case CIPHER_HASH:
 275                 sess->chain_order = CIPHER_HASH;
 276                 auth_xform = xform->next;
 277                 cipher_xform = xform;
 278                 break;
 279         default:
 280                 MB_LOG_ERR("Unsupported operation chain order parameter");
 281                 return -1;
 282         }
 283
 284         if (aesni_mb_set_session_auth_parameters(mb_ops, sess, auth_xform)) {
 285                 MB_LOG_ERR("Invalid/unsupported authentication parameters");
 286                 return -1;
 287         }
 288
 289         if (aesni_mb_set_session_cipher_parameters(mb_ops, sess,
 290                         cipher_xform)) {
 291                 MB_LOG_ERR("Invalid/unsupported cipher parameters");
 292                 return -1;
 293         }
 294         return 0;
 295 }
 296
 297 /** Get multi buffer session */
 298 static struct aesni_mb_session *
 299 get_session(struct aesni_mb_qp *qp, struct rte_crypto_op *op)
 300 {
 301         struct aesni_mb_session *sess = NULL;
 302
 303         if (op->sym->type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
 304                 if (unlikely(op->sym->session->type !=
 305                                 RTE_CRYPTODEV_AESNI_MB_PMD))
 306                         return NULL;
 307
 308                 sess = (struct aesni_mb_session *)op->sym->session->_private;
 309         } else  {
 310                 void *_sess = NULL;
 311
 312                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 313                         return NULL;
 314
 315                 sess = (struct aesni_mb_session *)
 316                         ((struct rte_cryptodev_sym_session *)_sess)->_private;
 317
 318                 if (unlikely(aesni_mb_set_session_parameters(qp->ops,
 319                                 sess, op->sym->xform) != 0)) {
 320                         rte_mempool_put(qp->sess_mp, _sess);
 321                         sess = NULL;
 322                 }
 323         }
 324
 325         return sess;
 326 }
 327
 328 /**
 329  * Process a crypto operation and complete a JOB_AES_HMAC job structure for
 330  * submission to the multi buffer library for processing.
 331  *
 332  * @param       qp      queue pair
 333  * @param       job     JOB_AES_HMAC structure to fill
 334  * @param       m       mbuf to process
 335  *
 336  * @return
 337  * - Completed JOB_AES_HMAC structure pointer on success
 338  * - NULL pointer if completion of JOB_AES_HMAC structure isn't possible
 339  */
 340 static JOB_AES_HMAC *
 341 process_crypto_op(struct aesni_mb_qp *qp, struct rte_crypto_op *op,
 342                 struct aesni_mb_session *session)
 343 {
 344         JOB_AES_HMAC *job;
 345
 346         struct rte_mbuf *m_src = op->sym->m_src, *m_dst;
 347         uint16_t m_offset = 0;
 348
 349         job = (*qp->ops->job.get_next)(&qp->mb_mgr);
 350         if (unlikely(job == NULL))
 351                 return job;
 352
 353         /* Set crypto operation */
 354         job->chain_order = session->chain_order;
 355
 356         /* Set cipher parameters */
 357         job->cipher_direction = session->cipher.direction;
 358         job->cipher_mode = session->cipher.mode;
 359
 360         job->aes_key_len_in_bytes = session->cipher.key_length_in_bytes;
 361         job->aes_enc_key_expanded = session->cipher.expanded_aes_keys.encode;
 362         job->aes_dec_key_expanded = session->cipher.expanded_aes_keys.decode;
 363
 364
 365         /* Set authentication parameters */
 366         job->hash_alg = session->auth.algo;
 367         if (job->hash_alg == AES_XCBC) {
 368                 job->_k1_expanded = session->auth.xcbc.k1_expanded;
 369                 job->_k2 = session->auth.xcbc.k2;
 370                 job->_k3 = session->auth.xcbc.k3;
 371         } else {
 372                 job->hashed_auth_key_xor_ipad = session->auth.pads.inner;
 373                 job->hashed_auth_key_xor_opad = session->auth.pads.outer;
 374         }
 375
 376         /* Mutable crypto operation parameters */
 377         if (op->sym->m_dst) {
 378                 m_src = m_dst = op->sym->m_dst;
 379
 380                 /* append space for output data to mbuf */
 381                 char *odata = rte_pktmbuf_append(m_dst,
 382                                 rte_pktmbuf_data_len(op->sym->m_src));
 383                 if (odata == NULL)
 384                         MB_LOG_ERR("failed to allocate space in destination "
 385                                         "mbuf for source data");
 386
 387                 memcpy(odata, rte_pktmbuf_mtod(op->sym->m_src, void*),
 388                                 rte_pktmbuf_data_len(op->sym->m_src));
 389         } else {
 390                 m_dst = m_src;
 391                 m_offset = op->sym->cipher.data.offset;
 392         }
 393
 394         /* Set digest output location */
 395         if (job->cipher_direction == DECRYPT) {
 396                 job->auth_tag_output = (uint8_t *)rte_pktmbuf_append(m_dst,
 397                                 get_digest_byte_length(job->hash_alg));
 398
 399                 if (job->auth_tag_output == NULL) {
 400                         MB_LOG_ERR("failed to allocate space in output mbuf "
 401                                         "for temp digest");
 402                         return NULL;
 403                 }
 404
 405                 memset(job->auth_tag_output, 0,
 406                                 sizeof(get_digest_byte_length(job->hash_alg)));
 407
 408         } else {
 409                 job->auth_tag_output = op->sym->auth.digest.data;
 410         }
 411
 412         /*
 413          * Multi-buffer library current only support returning a truncated
 414          * digest length as specified in the relevant IPsec RFCs
 415          */
 416         job->auth_tag_output_len_in_bytes =
 417                         get_truncated_digest_byte_length(job->hash_alg);
 418
 419         /* Set IV parameters */
 420         job->iv = op->sym->cipher.iv.data;
 421         job->iv_len_in_bytes = op->sym->cipher.iv.length;
 422
 423         /* Data  Parameter */
 424         job->src = rte_pktmbuf_mtod(m_src, uint8_t *);
 425         job->dst = rte_pktmbuf_mtod_offset(m_dst, uint8_t *, m_offset);
 426
 427         job->cipher_start_src_offset_in_bytes = op->sym->cipher.data.offset;
 428         job->msg_len_to_cipher_in_bytes = op->sym->cipher.data.length;
 429
 430         job->hash_start_src_offset_in_bytes = op->sym->auth.data.offset;
 431         job->msg_len_to_hash_in_bytes = op->sym->auth.data.length;
 432
 433         /* Set user data to be crypto operation data struct */
 434         job->user_data = op;
 435         job->user_data2 = m_dst;
 436
 437         return job;
 438 }
 439
 440 /**
 441  * Process a completed job and return rte_mbuf which job processed
 442  *
 443  * @param job   JOB_AES_HMAC job to process
 444  *
 445  * @return
 446  * - Returns processed mbuf which is trimmed of output digest used in
 447  * verification of supplied digest in the case of a HASH_CIPHER operation
 448  * - Returns NULL on invalid job
 449  */
 450 static struct rte_crypto_op *
 451 post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 452 {
 453         struct rte_crypto_op *op =
 454                         (struct rte_crypto_op *)job->user_data;
 455         struct rte_mbuf *m_dst =
 456                         (struct rte_mbuf *)job->user_data2;
 457
 458         if (op == NULL || m_dst == NULL)
 459                 return NULL;
 460
 461         /* set status as successful by default */
 462         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 463
 464         /* check if job has been processed  */
 465         if (unlikely(job->status != STS_COMPLETED)) {
 466                 op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 467                 return op;
 468         } else if (job->chain_order == HASH_CIPHER) {
 469                 /* Verify digest if required */
 470                 if (memcmp(job->auth_tag_output, op->sym->auth.digest.data,
 471                                 job->auth_tag_output_len_in_bytes) != 0)
 472                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 473
 474                 /* trim area used for digest from mbuf */
 475                 rte_pktmbuf_trim(m_dst, get_digest_byte_length(job->hash_alg));
 476         }
 477
 478         /* Free session if a session-less crypto op */
 479         if (op->sym->type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 480                 rte_mempool_put(qp->sess_mp, op->sym->session);
 481                 op->sym->session = NULL;
 482         }
 483
 484         return op;
 485 }
 486
 487 /**
 488  * Process a completed JOB_AES_HMAC job and keep processing jobs until
 489  * get_completed_job return NULL
 490  *
 491  * @param qp            Queue Pair to process
 492  * @param job           JOB_AES_HMAC job
 493  *
 494  * @return
 495  * - Number of processed jobs
 496  */
 497 static unsigned
 498 handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 499 {
 500         struct rte_crypto_op *op = NULL;
 501         unsigned processed_jobs = 0;
 502
 503         while (job) {
 504                 processed_jobs++;
 505                 op = post_process_mb_job(qp, job);
 506                 if (op)
 507                         rte_ring_enqueue(qp->processed_ops, (void *)op);
 508                 else
 509                         qp->stats.dequeue_err_count++;
 510                 job = (*qp->ops->job.get_completed_job)(&qp->mb_mgr);
 511         }
 512
 513         return processed_jobs;
 514 }
 515
 516 static uint16_t
 517 aesni_mb_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 518                 uint16_t nb_ops)
 519 {
 520         struct aesni_mb_session *sess;
 521         struct aesni_mb_qp *qp = queue_pair;
 522
 523         JOB_AES_HMAC *job = NULL;
 524
 525         int i, processed_jobs = 0;
 526
 527         for (i = 0; i < nb_ops; i++) {
 528 #ifdef RTE_LIBRTE_AESNI_MB_DEBUG
 529                 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC)) {
 530                         MB_LOG_ERR("PMD only supports symmetric crypto "
 531                                 "operation requests, op (%p) is not a "
 532                                 "symmetric operation.", op);
 533                         qp->stats.enqueue_err_count++;
 534                         goto flush_jobs;
 535                 }
 536 #endif
 537                 sess = get_session(qp, ops[i]);
 538                 if (unlikely(sess == NULL)) {
 539                         qp->stats.enqueue_err_count++;
 540                         goto flush_jobs;
 541                 }
 542
 543                 job = process_crypto_op(qp, ops[i], sess);
 544                 if (unlikely(job == NULL)) {
 545                         qp->stats.enqueue_err_count++;
 546                         goto flush_jobs;
 547                 }
 548
 549                 /* Submit Job */
 550                 job = (*qp->ops->job.submit)(&qp->mb_mgr);
 551
 552                 /*
 553                  * If submit returns a processed job then handle it,
 554                  * before submitting subsequent jobs
 555                  */
 556                 if (job)
 557                         processed_jobs += handle_completed_jobs(qp, job);
 558         }
 559
 560         if (processed_jobs == 0)
 561                 goto flush_jobs;
 562         else
 563                 qp->stats.enqueued_count += processed_jobs;
 564                 return i;
 565
 566 flush_jobs:
 567         /*
 568          * If we haven't processed any jobs in submit loop, then flush jobs
 569          * queue to stop the output stalling
 570          */
 571         job = (*qp->ops->job.flush_job)(&qp->mb_mgr);
 572         if (job)
 573                 qp->stats.enqueued_count += handle_completed_jobs(qp, job);
 574
 575         return i;
 576 }
 577
 578 static uint16_t
 579 aesni_mb_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
 580                 uint16_t nb_ops)
 581 {
 582         struct aesni_mb_qp *qp = queue_pair;
 583
 584         unsigned nb_dequeued;
 585
 586         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 587                         (void **)ops, nb_ops);
 588         qp->stats.dequeued_count += nb_dequeued;
 589
 590         return nb_dequeued;
 591 }
 592
 593
 594 static int cryptodev_aesni_mb_uninit(const char *name);
 595
 596 static int
 597 cryptodev_aesni_mb_create(const char *name, unsigned socket_id)
 598 {
 599         struct rte_cryptodev *dev;
 600         char crypto_dev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 601         struct aesni_mb_private *internals;
 602         enum aesni_mb_vector_mode vector_mode;
 603
 604         /* Check CPU for support for AES instruction set */
 605         if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
 606                 MB_LOG_ERR("AES instructions not supported by CPU");
 607                 return -EFAULT;
 608         }
 609
 610         /* Check CPU for supported vector instruction set */
 611         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 612                 vector_mode = RTE_AESNI_MB_AVX2;
 613         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
 614                 vector_mode = RTE_AESNI_MB_AVX;
 615         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
 616                 vector_mode = RTE_AESNI_MB_SSE;
 617         else {
 618                 MB_LOG_ERR("Vector instructions are not supported by CPU");
 619                 return -EFAULT;
 620         }
 621
 622         /* create a unique device name */
 623         if (create_unique_device_name(crypto_dev_name,
 624                         RTE_CRYPTODEV_NAME_MAX_LEN) != 0) {
 625                 MB_LOG_ERR("failed to create unique cryptodev name");
 626                 return -EINVAL;
 627         }
 628
 629
 630         dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name,
 631                         sizeof(struct aesni_mb_private), socket_id);
 632         if (dev == NULL) {
 633                 MB_LOG_ERR("failed to create cryptodev vdev");
 634                 goto init_error;
 635         }
 636
 637         dev->dev_type = RTE_CRYPTODEV_AESNI_MB_PMD;
 638         dev->dev_ops = rte_aesni_mb_pmd_ops;
 639
 640         /* register rx/tx burst functions for data path */
 641         dev->dequeue_burst = aesni_mb_pmd_dequeue_burst;
 642         dev->enqueue_burst = aesni_mb_pmd_enqueue_burst;
 643
 644         /* Set vector instructions mode supported */
 645         internals = dev->data->dev_private;
 646
 647         internals->vector_mode = vector_mode;
 648         internals->max_nb_queue_pairs = RTE_AESNI_MB_PMD_MAX_NB_QUEUE_PAIRS;
 649         internals->max_nb_sessions = RTE_AESNI_MB_PMD_MAX_NB_SESSIONS;
 650
 651         return 0;
 652 init_error:
 653         MB_LOG_ERR("driver %s: cryptodev_aesni_create failed", name);
 654
 655         cryptodev_aesni_mb_uninit(crypto_dev_name);
 656         return -EFAULT;
 657 }
 658
 659
 660 static int
 661 cryptodev_aesni_mb_init(const char *name,
 662                 const char *params __rte_unused)
 663 {
 664         RTE_LOG(INFO, PMD, "Initialising %s\n", name);
 665
 666         return cryptodev_aesni_mb_create(name, rte_socket_id());
 667 }
 668
 669 static int
 670 cryptodev_aesni_mb_uninit(const char *name)
 671 {
 672         if (name == NULL)
 673                 return -EINVAL;
 674
 675         RTE_LOG(INFO, PMD, "Closing AESNI crypto device %s on numa socket %u\n",
 676                         name, rte_socket_id());
 677
 678         return 0;
 679 }
 680
 681 static struct rte_driver cryptodev_aesni_mb_pmd_drv = {
 682         .name = CRYPTODEV_NAME_AESNI_MB_PMD,
 683         .type = PMD_VDEV,
 684         .init = cryptodev_aesni_mb_init,
 685         .uninit = cryptodev_aesni_mb_uninit
 686 };
 687
 688 PMD_REGISTER_DRIVER(cryptodev_aesni_mb_pmd_drv);