drivers/crypto/aesni_gcm/aesni_gcm_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2016-2017 Intel Corporation. All rights reserved.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Intel Corporation nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <rte_common.h>
  34 #include <rte_config.h>
  35 #include <rte_hexdump.h>
  36 #include <rte_cryptodev.h>
  37 #include <rte_cryptodev_pmd.h>
  38 #include <rte_vdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cpuflags.h>
  41 #include <rte_byteorder.h>
  42
  43 #include "aesni_gcm_pmd_private.h"
  44
  45 static uint8_t cryptodev_driver_id;
  46
  47 /** Parse crypto xform chain and set private session parameters */
  48 int
  49 aesni_gcm_set_session_parameters(const struct aesni_gcm_ops *gcm_ops,
  50                 struct aesni_gcm_session *sess,
  51                 const struct rte_crypto_sym_xform *xform)
  52 {
  53         const struct rte_crypto_sym_xform *auth_xform;
  54         const struct rte_crypto_sym_xform *aead_xform;
  55         uint16_t digest_length;
  56         uint8_t key_length;
  57         uint8_t *key;
  58
  59         /* AES-GMAC */
  60         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  61                 auth_xform = xform;
  62                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_AES_GMAC) {
  63                         GCM_LOG_ERR("Only AES GMAC is supported as an "
  64                                         "authentication only algorithm");
  65                         return -ENOTSUP;
  66                 }
  67                 /* Set IV parameters */
  68                 sess->iv.offset = auth_xform->auth.iv.offset;
  69                 sess->iv.length = auth_xform->auth.iv.length;
  70
  71                 /* Select Crypto operation */
  72                 if (auth_xform->auth.op == RTE_CRYPTO_AUTH_OP_GENERATE)
  73                         sess->op = AESNI_GMAC_OP_GENERATE;
  74                 else
  75                         sess->op = AESNI_GMAC_OP_VERIFY;
  76
  77                 key_length = auth_xform->auth.key.length;
  78                 key = auth_xform->auth.key.data;
  79                 digest_length = auth_xform->auth.digest_length;
  80
  81         /* AES-GCM */
  82         } else if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
  83                 aead_xform = xform;
  84
  85                 if (aead_xform->aead.algo != RTE_CRYPTO_AEAD_AES_GCM) {
  86                         GCM_LOG_ERR("The only combined operation "
  87                                                 "supported is AES GCM");
  88                         return -ENOTSUP;
  89                 }
  90
  91                 /* Set IV parameters */
  92                 sess->iv.offset = aead_xform->aead.iv.offset;
  93                 sess->iv.length = aead_xform->aead.iv.length;
  94
  95                 /* Select Crypto operation */
  96                 if (aead_xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT)
  97                         sess->op = AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION;
  98                 else
  99                         sess->op = AESNI_GCM_OP_AUTHENTICATED_DECRYPTION;
 100
 101                 key_length = aead_xform->aead.key.length;
 102                 key = aead_xform->aead.key.data;
 103
 104                 sess->aad_length = aead_xform->aead.aad_length;
 105                 digest_length = aead_xform->aead.digest_length;
 106         } else {
 107                 GCM_LOG_ERR("Wrong xform type, has to be AEAD or authentication");
 108                 return -ENOTSUP;
 109         }
 110
 111
 112         /* IV check */
 113         if (sess->iv.length != 16 && sess->iv.length != 12 &&
 114                         sess->iv.length != 0) {
 115                 GCM_LOG_ERR("Wrong IV length");
 116                 return -EINVAL;
 117         }
 118
 119         /* Check key length and calculate GCM pre-compute. */
 120         switch (key_length) {
 121         case 16:
 122                 sess->key = AESNI_GCM_KEY_128;
 123                 break;
 124         case 24:
 125                 sess->key = AESNI_GCM_KEY_192;
 126                 break;
 127         case 32:
 128                 sess->key = AESNI_GCM_KEY_256;
 129                 break;
 130         default:
 131                 GCM_LOG_ERR("Invalid key length");
 132                 return -EINVAL;
 133         }
 134
 135         gcm_ops[sess->key].precomp(key, &sess->gdata_key);
 136
 137         /* Digest check */
 138         if (digest_length != 16 &&
 139                         digest_length != 12 &&
 140                         digest_length != 8) {
 141                 GCM_LOG_ERR("digest");
 142                 return -EINVAL;
 143         }
 144         sess->digest_length = digest_length;
 145
 146         return 0;
 147 }
 148
 149 /** Get gcm session */
 150 static struct aesni_gcm_session *
 151 aesni_gcm_get_session(struct aesni_gcm_qp *qp, struct rte_crypto_op *op)
 152 {
 153         struct aesni_gcm_session *sess = NULL;
 154         struct rte_crypto_sym_op *sym_op = op->sym;
 155
 156         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 157                 if (likely(sym_op->session != NULL))
 158                         sess = (struct aesni_gcm_session *)
 159                                         get_session_private_data(
 160                                         sym_op->session,
 161                                         cryptodev_driver_id);
 162         } else  {
 163                 void *_sess;
 164                 void *_sess_private_data = NULL;
 165
 166                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 167                         return NULL;
 168
 169                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 170                         return NULL;
 171
 172                 sess = (struct aesni_gcm_session *)_sess_private_data;
 173
 174                 if (unlikely(aesni_gcm_set_session_parameters(qp->ops,
 175                                 sess, sym_op->xform) != 0)) {
 176                         rte_mempool_put(qp->sess_mp, _sess);
 177                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 178                         sess = NULL;
 179                 }
 180                 sym_op->session = (struct rte_cryptodev_sym_session *)_sess;
 181                 set_session_private_data(sym_op->session, cryptodev_driver_id,
 182                         _sess_private_data);
 183         }
 184
 185         if (unlikely(sess == NULL))
 186                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 187
 188         return sess;
 189 }
 190
 191 /**
 192  * Process a crypto operation, calling
 193  * the GCM API from the multi buffer library.
 194  *
 195  * @param       qp              queue pair
 196  * @param       op              symmetric crypto operation
 197  * @param       session         GCM session
 198  *
 199  * @return
 200  *
 201  */
 202 static int
 203 process_gcm_crypto_op(struct aesni_gcm_qp *qp, struct rte_crypto_op *op,
 204                 struct aesni_gcm_session *session)
 205 {
 206         uint8_t *src, *dst;
 207         uint8_t *iv_ptr;
 208         struct rte_crypto_sym_op *sym_op = op->sym;
 209         struct rte_mbuf *m_src = sym_op->m_src;
 210         uint32_t offset, data_offset, data_length;
 211         uint32_t part_len, total_len, data_len;
 212
 213         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION ||
 214                         session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 215                 offset = sym_op->aead.data.offset;
 216                 data_offset = offset;
 217                 data_length = sym_op->aead.data.length;
 218         } else {
 219                 offset = sym_op->auth.data.offset;
 220                 data_offset = offset;
 221                 data_length = sym_op->auth.data.length;
 222         }
 223
 224         RTE_ASSERT(m_src != NULL);
 225
 226         while (offset >= m_src->data_len && data_length != 0) {
 227                 offset -= m_src->data_len;
 228                 m_src = m_src->next;
 229
 230                 RTE_ASSERT(m_src != NULL);
 231         }
 232
 233         data_len = m_src->data_len - offset;
 234         part_len = (data_len < data_length) ? data_len :
 235                         data_length;
 236
 237         /* Destination buffer is required when segmented source buffer */
 238         RTE_ASSERT((part_len == data_length) ||
 239                         ((part_len != data_length) &&
 240                                         (sym_op->m_dst != NULL)));
 241         /* Segmented destination buffer is not supported */
 242         RTE_ASSERT((sym_op->m_dst == NULL) ||
 243                         ((sym_op->m_dst != NULL) &&
 244                                         rte_pktmbuf_is_contiguous(sym_op->m_dst)));
 245
 246
 247         dst = sym_op->m_dst ?
 248                         rte_pktmbuf_mtod_offset(sym_op->m_dst, uint8_t *,
 249                                         data_offset) :
 250                         rte_pktmbuf_mtod_offset(sym_op->m_src, uint8_t *,
 251                                         data_offset);
 252
 253         src = rte_pktmbuf_mtod_offset(m_src, uint8_t *, offset);
 254
 255         iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
 256                                 session->iv.offset);
 257         /*
 258          * GCM working in 12B IV mode => 16B pre-counter block we need
 259          * to set BE LSB to 1, driver expects that 16B is allocated
 260          */
 261         if (session->iv.length == 12) {
 262                 uint32_t *iv_padd = (uint32_t *)&(iv_ptr[12]);
 263                 *iv_padd = rte_bswap32(1);
 264         }
 265
 266         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION) {
 267
 268                 qp->ops[session->key].init(&session->gdata_key,
 269                                 &qp->gdata_ctx,
 270                                 iv_ptr,
 271                                 sym_op->aead.aad.data,
 272                                 (uint64_t)session->aad_length);
 273
 274                 qp->ops[session->key].update_enc(&session->gdata_key,
 275                                 &qp->gdata_ctx, dst, src,
 276                                 (uint64_t)part_len);
 277                 total_len = data_length - part_len;
 278
 279                 while (total_len) {
 280                         dst += part_len;
 281                         m_src = m_src->next;
 282
 283                         RTE_ASSERT(m_src != NULL);
 284
 285                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 286                         part_len = (m_src->data_len < total_len) ?
 287                                         m_src->data_len : total_len;
 288
 289                         qp->ops[session->key].update_enc(&session->gdata_key,
 290                                         &qp->gdata_ctx, dst, src,
 291                                         (uint64_t)part_len);
 292                         total_len -= part_len;
 293                 }
 294
 295                 qp->ops[session->key].finalize(&session->gdata_key,
 296                                 &qp->gdata_ctx,
 297                                 sym_op->aead.digest.data,
 298                                 (uint64_t)session->digest_length);
 299         } else if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 300                 uint8_t *auth_tag = qp->temp_digest;
 301
 302                 qp->ops[session->key].init(&session->gdata_key,
 303                                 &qp->gdata_ctx,
 304                                 iv_ptr,
 305                                 sym_op->aead.aad.data,
 306                                 (uint64_t)session->aad_length);
 307
 308                 qp->ops[session->key].update_dec(&session->gdata_key,
 309                                 &qp->gdata_ctx, dst, src,
 310                                 (uint64_t)part_len);
 311                 total_len = data_length - part_len;
 312
 313                 while (total_len) {
 314                         dst += part_len;
 315                         m_src = m_src->next;
 316
 317                         RTE_ASSERT(m_src != NULL);
 318
 319                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 320                         part_len = (m_src->data_len < total_len) ?
 321                                         m_src->data_len : total_len;
 322
 323                         qp->ops[session->key].update_dec(&session->gdata_key,
 324                                         &qp->gdata_ctx,
 325                                         dst, src,
 326                                         (uint64_t)part_len);
 327                         total_len -= part_len;
 328                 }
 329
 330                 qp->ops[session->key].finalize(&session->gdata_key,
 331                                 &qp->gdata_ctx,
 332                                 auth_tag,
 333                                 (uint64_t)session->digest_length);
 334         } else if (session->op == AESNI_GMAC_OP_GENERATE) {
 335                 qp->ops[session->key].init(&session->gdata_key,
 336                                 &qp->gdata_ctx,
 337                                 iv_ptr,
 338                                 src,
 339                                 (uint64_t)data_length);
 340                 qp->ops[session->key].finalize(&session->gdata_key,
 341                                 &qp->gdata_ctx,
 342                                 sym_op->auth.digest.data,
 343                                 (uint64_t)session->digest_length);
 344         } else { /* AESNI_GMAC_OP_VERIFY */
 345                 uint8_t *auth_tag = qp->temp_digest;
 346
 347                 qp->ops[session->key].init(&session->gdata_key,
 348                                 &qp->gdata_ctx,
 349                                 iv_ptr,
 350                                 src,
 351                                 (uint64_t)data_length);
 352
 353                 qp->ops[session->key].finalize(&session->gdata_key,
 354                                 &qp->gdata_ctx,
 355                                 auth_tag,
 356                                 (uint64_t)session->digest_length);
 357         }
 358
 359         return 0;
 360 }
 361
 362 /**
 363  * Process a completed job and return rte_mbuf which job processed
 364  *
 365  * @param job   JOB_AES_HMAC job to process
 366  *
 367  * @return
 368  * - Returns processed mbuf which is trimmed of output digest used in
 369  * verification of supplied digest in the case of a HASH_CIPHER operation
 370  * - Returns NULL on invalid job
 371  */
 372 static void
 373 post_process_gcm_crypto_op(struct aesni_gcm_qp *qp,
 374                 struct rte_crypto_op *op,
 375                 struct aesni_gcm_session *session)
 376 {
 377         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 378
 379         /* Verify digest if required */
 380         if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION ||
 381                         session->op == AESNI_GMAC_OP_VERIFY) {
 382                 uint8_t *digest;
 383
 384                 uint8_t *tag = (uint8_t *)&qp->temp_digest;
 385
 386                 if (session->op == AESNI_GMAC_OP_VERIFY)
 387                         digest = op->sym->auth.digest.data;
 388                 else
 389                         digest = op->sym->aead.digest.data;
 390
 391 #ifdef RTE_LIBRTE_PMD_AESNI_GCM_DEBUG
 392                 rte_hexdump(stdout, "auth tag (orig):",
 393                                 digest, session->digest_length);
 394                 rte_hexdump(stdout, "auth tag (calc):",
 395                                 tag, session->digest_length);
 396 #endif
 397
 398                 if (memcmp(tag, digest, session->digest_length) != 0)
 399                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 400         }
 401 }
 402
 403 /**
 404  * Process a completed GCM request
 405  *
 406  * @param qp            Queue Pair to process
 407  * @param op            Crypto operation
 408  * @param job           JOB_AES_HMAC job
 409  *
 410  * @return
 411  * - Number of processed jobs
 412  */
 413 static void
 414 handle_completed_gcm_crypto_op(struct aesni_gcm_qp *qp,
 415                 struct rte_crypto_op *op,
 416                 struct aesni_gcm_session *sess)
 417 {
 418         post_process_gcm_crypto_op(qp, op, sess);
 419
 420         /* Free session if a session-less crypto op */
 421         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 422                 memset(sess, 0, sizeof(struct aesni_gcm_session));
 423                 memset(op->sym->session, 0,
 424                                 rte_cryptodev_get_header_session_size());
 425                 rte_mempool_put(qp->sess_mp, sess);
 426                 rte_mempool_put(qp->sess_mp, op->sym->session);
 427                 op->sym->session = NULL;
 428         }
 429 }
 430
 431 static uint16_t
 432 aesni_gcm_pmd_dequeue_burst(void *queue_pair,
 433                 struct rte_crypto_op **ops, uint16_t nb_ops)
 434 {
 435         struct aesni_gcm_session *sess;
 436         struct aesni_gcm_qp *qp = queue_pair;
 437
 438         int retval = 0;
 439         unsigned int i, nb_dequeued;
 440
 441         nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts,
 442                         (void **)ops, nb_ops, NULL);
 443
 444         for (i = 0; i < nb_dequeued; i++) {
 445
 446                 sess = aesni_gcm_get_session(qp, ops[i]);
 447                 if (unlikely(sess == NULL)) {
 448                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 449                         qp->qp_stats.dequeue_err_count++;
 450                         break;
 451                 }
 452
 453                 retval = process_gcm_crypto_op(qp, ops[i], sess);
 454                 if (retval < 0) {
 455                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 456                         qp->qp_stats.dequeue_err_count++;
 457                         break;
 458                 }
 459
 460                 handle_completed_gcm_crypto_op(qp, ops[i], sess);
 461         }
 462
 463         qp->qp_stats.dequeued_count += i;
 464
 465         return i;
 466 }
 467
 468 static uint16_t
 469 aesni_gcm_pmd_enqueue_burst(void *queue_pair,
 470                 struct rte_crypto_op **ops, uint16_t nb_ops)
 471 {
 472         struct aesni_gcm_qp *qp = queue_pair;
 473
 474         unsigned int nb_enqueued;
 475
 476         nb_enqueued = rte_ring_enqueue_burst(qp->processed_pkts,
 477                         (void **)ops, nb_ops, NULL);
 478         qp->qp_stats.enqueued_count += nb_enqueued;
 479
 480         return nb_enqueued;
 481 }
 482
 483 static int aesni_gcm_remove(struct rte_vdev_device *vdev);
 484
 485 static int
 486 aesni_gcm_create(const char *name,
 487                 struct rte_vdev_device *vdev,
 488                 struct rte_cryptodev_pmd_init_params *init_params)
 489 {
 490         struct rte_cryptodev *dev;
 491         struct aesni_gcm_private *internals;
 492         enum aesni_gcm_vector_mode vector_mode;
 493
 494         /* Check CPU for support for AES instruction set */
 495         if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
 496                 GCM_LOG_ERR("AES instructions not supported by CPU");
 497                 return -EFAULT;
 498         }
 499
 500         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
 501         if (dev == NULL) {
 502                 GCM_LOG_ERR("driver %s: create failed", init_params->name);
 503                 return -ENODEV;
 504         }
 505
 506         /* Check CPU for supported vector instruction set */
 507         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 508                 vector_mode = RTE_AESNI_GCM_AVX2;
 509         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
 510                 vector_mode = RTE_AESNI_GCM_AVX;
 511         else
 512                 vector_mode = RTE_AESNI_GCM_SSE;
 513
 514         dev->driver_id = cryptodev_driver_id;
 515         dev->dev_ops = rte_aesni_gcm_pmd_ops;
 516
 517         /* register rx/tx burst functions for data path */
 518         dev->dequeue_burst = aesni_gcm_pmd_dequeue_burst;
 519         dev->enqueue_burst = aesni_gcm_pmd_enqueue_burst;
 520
 521         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 522                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 523                         RTE_CRYPTODEV_FF_CPU_AESNI |
 524                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
 525
 526         switch (vector_mode) {
 527         case RTE_AESNI_GCM_SSE:
 528                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 529                 break;
 530         case RTE_AESNI_GCM_AVX:
 531                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX;
 532                 break;
 533         case RTE_AESNI_GCM_AVX2:
 534                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2;
 535                 break;
 536         default:
 537                 break;
 538         }
 539
 540         internals = dev->data->dev_private;
 541
 542         internals->vector_mode = vector_mode;
 543
 544         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 545         internals->max_nb_sessions = init_params->max_nb_sessions;
 546
 547         return 0;
 548 }
 549
 550 static int
 551 aesni_gcm_probe(struct rte_vdev_device *vdev)
 552 {
 553         struct rte_cryptodev_pmd_init_params init_params = {
 554                 "",
 555                 sizeof(struct aesni_gcm_private),
 556                 rte_socket_id(),
 557                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS,
 558                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS
 559         };
 560         const char *name;
 561         const char *input_args;
 562
 563         name = rte_vdev_device_name(vdev);
 564         if (name == NULL)
 565                 return -EINVAL;
 566         input_args = rte_vdev_device_args(vdev);
 567         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 568
 569         return aesni_gcm_create(name, vdev, &init_params);
 570 }
 571
 572 static int
 573 aesni_gcm_remove(struct rte_vdev_device *vdev)
 574 {
 575         struct rte_cryptodev *cryptodev;
 576         const char *name;
 577
 578         name = rte_vdev_device_name(vdev);
 579         if (name == NULL)
 580                 return -EINVAL;
 581
 582         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
 583         if (cryptodev == NULL)
 584                 return -ENODEV;
 585
 586         return rte_cryptodev_pmd_destroy(cryptodev);
 587 }
 588
 589 static struct rte_vdev_driver aesni_gcm_pmd_drv = {
 590         .probe = aesni_gcm_probe,
 591         .remove = aesni_gcm_remove
 592 };
 593
 594 static struct cryptodev_driver aesni_gcm_crypto_drv;
 595
 596 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_AESNI_GCM_PMD, aesni_gcm_pmd_drv);
 597 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_AESNI_GCM_PMD, cryptodev_aesni_gcm_pmd);
 598 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_AESNI_GCM_PMD,
 599         "max_nb_queue_pairs=<int> "
 600         "max_nb_sessions=<int> "
 601         "socket_id=<int>");
 602 RTE_PMD_REGISTER_CRYPTO_DRIVER(aesni_gcm_crypto_drv, aesni_gcm_pmd_drv,
 603                 cryptodev_driver_id);