drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2015 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_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_XFORM_AUTH &&
 123                         xform->next->type == RTE_CRYPTO_XFORM_CIPHER)
 124                 return HASH_CIPHER;
 125
 126         if (xform->type == RTE_CRYPTO_XFORM_CIPHER &&
 127                                 xform->next->type == RTE_CRYPTO_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_xform *xform)
 138 {
 139         hash_one_block_t hash_oneblock_fn;
 140
 141         if (xform->type != RTE_CRYPTO_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_xform *xform)
 200 {
 201         aes_keyexp_t aes_keyexp_fn;
 202
 203         if (xform->type != RTE_CRYPTO_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_xform *xform)
 263 {
 264         const struct rte_crypto_xform *auth_xform = NULL;
 265         const struct rte_crypto_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 *crypto_op)
 300 {
 301         struct aesni_mb_session *sess = NULL;
 302
 303         if (crypto_op->type == RTE_CRYPTO_OP_WITH_SESSION) {
 304                 if (unlikely(crypto_op->session->type !=
 305                                 RTE_CRYPTODEV_AESNI_MB_PMD))
 306                         return NULL;
 307
 308                 sess = (struct aesni_mb_session *)crypto_op->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_session *)_sess)->_private;
 317
 318                 if (unlikely(aesni_mb_set_session_parameters(qp->ops,
 319                                 sess, crypto_op->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_mbuf *m,
 342                 struct rte_crypto_op *c_op, struct aesni_mb_session *session)
 343 {
 344         JOB_AES_HMAC *job;
 345
 346         job = (*qp->ops->job.get_next)(&qp->mb_mgr);
 347         if (unlikely(job == NULL))
 348                 return job;
 349
 350         /* Set crypto operation */
 351         job->chain_order = session->chain_order;
 352
 353         /* Set cipher parameters */
 354         job->cipher_direction = session->cipher.direction;
 355         job->cipher_mode = session->cipher.mode;
 356
 357         job->aes_key_len_in_bytes = session->cipher.key_length_in_bytes;
 358         job->aes_enc_key_expanded = session->cipher.expanded_aes_keys.encode;
 359         job->aes_dec_key_expanded = session->cipher.expanded_aes_keys.decode;
 360
 361
 362         /* Set authentication parameters */
 363         job->hash_alg = session->auth.algo;
 364         if (job->hash_alg == AES_XCBC) {
 365                 job->_k1_expanded = session->auth.xcbc.k1_expanded;
 366                 job->_k2 = session->auth.xcbc.k2;
 367                 job->_k3 = session->auth.xcbc.k3;
 368         } else {
 369                 job->hashed_auth_key_xor_ipad = session->auth.pads.inner;
 370                 job->hashed_auth_key_xor_opad = session->auth.pads.outer;
 371         }
 372
 373         /* Mutable crypto operation parameters */
 374
 375         /* Set digest output location */
 376         if (job->cipher_direction == DECRYPT) {
 377                 job->auth_tag_output = (uint8_t *)rte_pktmbuf_append(m,
 378                                 get_digest_byte_length(job->hash_alg));
 379
 380                 if (job->auth_tag_output == NULL) {
 381                         MB_LOG_ERR("failed to allocate space in output mbuf "
 382                                         "for temp digest");
 383                         return NULL;
 384                 }
 385
 386                 memset(job->auth_tag_output, 0,
 387                                 sizeof(get_digest_byte_length(job->hash_alg)));
 388
 389         } else {
 390                 job->auth_tag_output = c_op->digest.data;
 391         }
 392
 393         /*
 394          * Multi-buffer library current only support returning a truncated
 395          * digest length as specified in the relevant IPsec RFCs
 396          */
 397         job->auth_tag_output_len_in_bytes =
 398                         get_truncated_digest_byte_length(job->hash_alg);
 399
 400         /* Set IV parameters */
 401         job->iv = c_op->iv.data;
 402         job->iv_len_in_bytes = c_op->iv.length;
 403
 404         /* Data  Parameter */
 405         job->src = rte_pktmbuf_mtod(m, uint8_t *);
 406         job->dst = c_op->dst.m ?
 407                         rte_pktmbuf_mtod(c_op->dst.m, uint8_t *) +
 408                         c_op->dst.offset :
 409                         rte_pktmbuf_mtod(m, uint8_t *) +
 410                         c_op->data.to_cipher.offset;
 411
 412         job->cipher_start_src_offset_in_bytes = c_op->data.to_cipher.offset;
 413         job->msg_len_to_cipher_in_bytes = c_op->data.to_cipher.length;
 414
 415         job->hash_start_src_offset_in_bytes = c_op->data.to_hash.offset;
 416         job->msg_len_to_hash_in_bytes = c_op->data.to_hash.length;
 417
 418         /* Set user data to be crypto operation data struct */
 419         job->user_data = m;
 420         job->user_data2 = c_op;
 421
 422         return job;
 423 }
 424
 425 /**
 426  * Process a completed job and return rte_mbuf which job processed
 427  *
 428  * @param job   JOB_AES_HMAC job to process
 429  *
 430  * @return
 431  * - Returns processed mbuf which is trimmed of output digest used in
 432  * verification of supplied digest in the case of a HASH_CIPHER operation
 433  * - Returns NULL on invalid job
 434  */
 435 static struct rte_mbuf *
 436 post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 437 {
 438         struct rte_mbuf *m;
 439         struct rte_crypto_op *c_op;
 440
 441         if (job->user_data == NULL)
 442                 return NULL;
 443
 444         /* handled retrieved job */
 445         m = (struct rte_mbuf *)job->user_data;
 446         c_op = (struct rte_crypto_op *)job->user_data2;
 447
 448         /* set status as successful by default */
 449         c_op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 450
 451         /* check if job has been processed  */
 452         if (unlikely(job->status != STS_COMPLETED)) {
 453                 c_op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 454                 return m;
 455         } else if (job->chain_order == HASH_CIPHER) {
 456                 /* Verify digest if required */
 457                 if (memcmp(job->auth_tag_output, c_op->digest.data,
 458                                 job->auth_tag_output_len_in_bytes) != 0)
 459                         c_op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 460
 461                 /* trim area used for digest from mbuf */
 462                 rte_pktmbuf_trim(m, get_digest_byte_length(job->hash_alg));
 463         }
 464
 465         /* Free session if a session-less crypto op */
 466         if (c_op->type == RTE_CRYPTO_OP_SESSIONLESS) {
 467                 rte_mempool_put(qp->sess_mp, c_op->session);
 468                 c_op->session = NULL;
 469         }
 470
 471         return m;
 472 }
 473
 474 /**
 475  * Process a completed JOB_AES_HMAC job and keep processing jobs until
 476  * get_completed_job return NULL
 477  *
 478  * @param qp            Queue Pair to process
 479  * @param job           JOB_AES_HMAC job
 480  *
 481  * @return
 482  * - Number of processed jobs
 483  */
 484 static unsigned
 485 handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 486 {
 487         struct rte_mbuf *m = NULL;
 488         unsigned processed_jobs = 0;
 489
 490         while (job) {
 491                 processed_jobs++;
 492                 m = post_process_mb_job(qp, job);
 493                 if (m)
 494                         rte_ring_enqueue(qp->processed_pkts, (void *)m);
 495                 else
 496                         qp->stats.dequeue_err_count++;
 497
 498                 job = (*qp->ops->job.get_completed_job)(&qp->mb_mgr);
 499         }
 500
 501         return processed_jobs;
 502 }
 503
 504 static uint16_t
 505 aesni_mb_pmd_enqueue_burst(void *queue_pair, struct rte_mbuf **bufs,
 506                 uint16_t nb_bufs)
 507 {
 508         struct rte_mbuf_offload *ol;
 509
 510         struct aesni_mb_session *sess;
 511         struct aesni_mb_qp *qp = queue_pair;
 512
 513         JOB_AES_HMAC *job = NULL;
 514
 515         int i, processed_jobs = 0;
 516
 517         for (i = 0; i < nb_bufs; i++) {
 518                 ol = rte_pktmbuf_offload_get(bufs[i], RTE_PKTMBUF_OL_CRYPTO);
 519                 if (unlikely(ol == NULL)) {
 520                         qp->stats.enqueue_err_count++;
 521                         goto flush_jobs;
 522                 }
 523
 524                 sess = get_session(qp, &ol->op.crypto);
 525                 if (unlikely(sess == NULL)) {
 526                         qp->stats.enqueue_err_count++;
 527                         goto flush_jobs;
 528                 }
 529
 530                 job = process_crypto_op(qp, bufs[i], &ol->op.crypto, sess);
 531                 if (unlikely(job == NULL)) {
 532                         qp->stats.enqueue_err_count++;
 533                         goto flush_jobs;
 534                 }
 535
 536                 /* Submit Job */
 537                 job = (*qp->ops->job.submit)(&qp->mb_mgr);
 538
 539                 /*
 540                  * If submit returns a processed job then handle it,
 541                  * before submitting subsequent jobs
 542                  */
 543                 if (job)
 544                         processed_jobs += handle_completed_jobs(qp, job);
 545         }
 546
 547         if (processed_jobs == 0)
 548                 goto flush_jobs;
 549         else
 550                 qp->stats.enqueued_count += processed_jobs;
 551                 return i;
 552
 553 flush_jobs:
 554         /*
 555          * If we haven't processed any jobs in submit loop, then flush jobs
 556          * queue to stop the output stalling
 557          */
 558         job = (*qp->ops->job.flush_job)(&qp->mb_mgr);
 559         if (job)
 560                 qp->stats.enqueued_count += handle_completed_jobs(qp, job);
 561
 562         return i;
 563 }
 564
 565 static uint16_t
 566 aesni_mb_pmd_dequeue_burst(void *queue_pair,
 567                 struct rte_mbuf **bufs, uint16_t nb_bufs)
 568 {
 569         struct aesni_mb_qp *qp = queue_pair;
 570
 571         unsigned nb_dequeued;
 572
 573         nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts,
 574                         (void **)bufs, nb_bufs);
 575         qp->stats.dequeued_count += nb_dequeued;
 576
 577         return nb_dequeued;
 578 }
 579
 580
 581 static int cryptodev_aesni_mb_uninit(const char *name);
 582
 583 static int
 584 cryptodev_aesni_mb_create(const char *name, unsigned socket_id)
 585 {
 586         struct rte_cryptodev *dev;
 587         char crypto_dev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 588         struct aesni_mb_private *internals;
 589         enum aesni_mb_vector_mode vector_mode;
 590
 591         /* Check CPU for support for AES instruction set */
 592         if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
 593                 MB_LOG_ERR("AES instructions not supported by CPU");
 594                 return -EFAULT;
 595         }
 596
 597         /* Check CPU for supported vector instruction set */
 598         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 599                 vector_mode = RTE_AESNI_MB_AVX2;
 600         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
 601                 vector_mode = RTE_AESNI_MB_AVX;
 602         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
 603                 vector_mode = RTE_AESNI_MB_SSE;
 604         else {
 605                 MB_LOG_ERR("Vector instructions are not supported by CPU");
 606                 return -EFAULT;
 607         }
 608
 609         /* create a unique device name */
 610         if (create_unique_device_name(crypto_dev_name,
 611                         RTE_CRYPTODEV_NAME_MAX_LEN) != 0) {
 612                 MB_LOG_ERR("failed to create unique cryptodev name");
 613                 return -EINVAL;
 614         }
 615
 616
 617         dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name,
 618                         sizeof(struct aesni_mb_private), socket_id);
 619         if (dev == NULL) {
 620                 MB_LOG_ERR("failed to create cryptodev vdev");
 621                 goto init_error;
 622         }
 623
 624         dev->dev_type = RTE_CRYPTODEV_AESNI_MB_PMD;
 625         dev->dev_ops = rte_aesni_mb_pmd_ops;
 626
 627         /* register rx/tx burst functions for data path */
 628         dev->dequeue_burst = aesni_mb_pmd_dequeue_burst;
 629         dev->enqueue_burst = aesni_mb_pmd_enqueue_burst;
 630
 631         /* Set vector instructions mode supported */
 632         internals = dev->data->dev_private;
 633
 634         internals->vector_mode = vector_mode;
 635         internals->max_nb_queue_pairs = RTE_AESNI_MB_PMD_MAX_NB_QUEUE_PAIRS;
 636         internals->max_nb_sessions = RTE_AESNI_MB_PMD_MAX_NB_SESSIONS;
 637
 638         return 0;
 639 init_error:
 640         MB_LOG_ERR("driver %s: cryptodev_aesni_create failed", name);
 641
 642         cryptodev_aesni_mb_uninit(crypto_dev_name);
 643         return -EFAULT;
 644 }
 645
 646
 647 static int
 648 cryptodev_aesni_mb_init(const char *name,
 649                 const char *params __rte_unused)
 650 {
 651         RTE_LOG(INFO, PMD, "Initialising %s\n", name);
 652
 653         return cryptodev_aesni_mb_create(name, rte_socket_id());
 654 }
 655
 656 static int
 657 cryptodev_aesni_mb_uninit(const char *name)
 658 {
 659         if (name == NULL)
 660                 return -EINVAL;
 661
 662         RTE_LOG(INFO, PMD, "Closing AESNI crypto device %s on numa socket %u\n",
 663                         name, rte_socket_id());
 664
 665         return 0;
 666 }
 667
 668 static struct rte_driver cryptodev_aesni_mb_pmd_drv = {
 669         .name = CRYPTODEV_NAME_AESNI_MB_PMD,
 670         .type = PMD_VDEV,
 671         .init = cryptodev_aesni_mb_init,
 672         .uninit = cryptodev_aesni_mb_uninit
 673 };
 674
 675 PMD_REGISTER_DRIVER(cryptodev_aesni_mb_pmd_drv);