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