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_cryptodev_vdev.h>
  39 #include <rte_vdev.h>
  40 #include <rte_malloc.h>
  41 #include <rte_cpuflags.h>
  42 #include <rte_byteorder.h>
  43
  44 #include "aesni_gcm_pmd_private.h"
  45
  46 /** GCM encode functions pointer table */
  47 static const struct aesni_gcm_ops aesni_gcm_enc[] = {
  48                 [AESNI_GCM_KEY_128] = {
  49                                 aesni_gcm128_init,
  50                                 aesni_gcm128_enc_update,
  51                                 aesni_gcm128_enc_finalize
  52                 },
  53                 [AESNI_GCM_KEY_256] = {
  54                                 aesni_gcm256_init,
  55                                 aesni_gcm256_enc_update,
  56                                 aesni_gcm256_enc_finalize
  57                 }
  58 };
  59
  60 /** GCM decode functions pointer table */
  61 static const struct aesni_gcm_ops aesni_gcm_dec[] = {
  62                 [AESNI_GCM_KEY_128] = {
  63                                 aesni_gcm128_init,
  64                                 aesni_gcm128_dec_update,
  65                                 aesni_gcm128_dec_finalize
  66                 },
  67                 [AESNI_GCM_KEY_256] = {
  68                                 aesni_gcm256_init,
  69                                 aesni_gcm256_dec_update,
  70                                 aesni_gcm256_dec_finalize
  71                 }
  72 };
  73
  74 /** Parse crypto xform chain and set private session parameters */
  75 int
  76 aesni_gcm_set_session_parameters(struct aesni_gcm_session *sess,
  77                 const struct rte_crypto_sym_xform *xform)
  78 {
  79         const struct rte_crypto_sym_xform *auth_xform;
  80         const struct rte_crypto_sym_xform *aead_xform;
  81         uint16_t digest_length;
  82         uint8_t key_length;
  83         uint8_t *key;
  84
  85         /* AES-GMAC */
  86         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  87                 auth_xform = xform;
  88                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_AES_GMAC) {
  89                         GCM_LOG_ERR("Only AES GMAC is supported as an "
  90                                         "authentication only algorithm");
  91                         return -EINVAL;
  92                 }
  93                 /* Set IV parameters */
  94                 sess->iv.offset = auth_xform->auth.iv.offset;
  95                 sess->iv.length = auth_xform->auth.iv.length;
  96
  97                 /* Select Crypto operation */
  98                 if (auth_xform->auth.op == RTE_CRYPTO_AUTH_OP_GENERATE)
  99                         sess->op = AESNI_GMAC_OP_GENERATE;
 100                 else
 101                         sess->op = AESNI_GMAC_OP_VERIFY;
 102
 103                 key_length = auth_xform->auth.key.length;
 104                 key = auth_xform->auth.key.data;
 105                 digest_length = auth_xform->auth.digest_length;
 106
 107         /* AES-GCM */
 108         } else if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 109                 aead_xform = xform;
 110
 111                 if (aead_xform->aead.algo != RTE_CRYPTO_AEAD_AES_GCM) {
 112                         GCM_LOG_ERR("The only combined operation "
 113                                                 "supported is AES GCM");
 114                         return -EINVAL;
 115                 }
 116
 117                 /* Set IV parameters */
 118                 sess->iv.offset = aead_xform->aead.iv.offset;
 119                 sess->iv.length = aead_xform->aead.iv.length;
 120
 121                 /* Select Crypto operation */
 122                 if (aead_xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT)
 123                         sess->op = AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION;
 124                 else
 125                         sess->op = AESNI_GCM_OP_AUTHENTICATED_DECRYPTION;
 126
 127                 key_length = aead_xform->aead.key.length;
 128                 key = aead_xform->aead.key.data;
 129
 130                 sess->aad_length = aead_xform->aead.add_auth_data_length;
 131                 digest_length = aead_xform->aead.digest_length;
 132         } else {
 133                 GCM_LOG_ERR("Wrong xform type, has to be AEAD or authentication");
 134                 return -EINVAL;
 135         }
 136
 137
 138         /* IV check */
 139         if (sess->iv.length != 16 && sess->iv.length != 12 &&
 140                         sess->iv.length != 0) {
 141                 GCM_LOG_ERR("Wrong IV length");
 142                 return -EINVAL;
 143         }
 144
 145         /* Check key length and calculate GCM pre-compute. */
 146         switch (key_length) {
 147         case 16:
 148                 aesni_gcm128_pre(key, &sess->gdata);
 149                 sess->key = AESNI_GCM_KEY_128;
 150
 151                 break;
 152         case 32:
 153                 aesni_gcm256_pre(key, &sess->gdata);
 154                 sess->key = AESNI_GCM_KEY_256;
 155
 156                 break;
 157         default:
 158                 GCM_LOG_ERR("Unsupported key length");
 159                 return -EINVAL;
 160         }
 161
 162         /* Digest check */
 163         if (digest_length != 16 &&
 164                         digest_length != 12 &&
 165                         digest_length != 8) {
 166                 GCM_LOG_ERR("digest");
 167                 return -EINVAL;
 168         }
 169         sess->digest_length = digest_length;
 170
 171         return 0;
 172 }
 173
 174 /** Get gcm session */
 175 static struct aesni_gcm_session *
 176 aesni_gcm_get_session(struct aesni_gcm_qp *qp, struct rte_crypto_op *op)
 177 {
 178         struct aesni_gcm_session *sess = NULL;
 179         struct rte_crypto_sym_op *sym_op = op->sym;
 180
 181         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 182                 if (unlikely(sym_op->session->dev_type
 183                                         != RTE_CRYPTODEV_AESNI_GCM_PMD))
 184                         return sess;
 185
 186                 sess = (struct aesni_gcm_session *)sym_op->session->_private;
 187         } else  {
 188                 void *_sess;
 189
 190                 if (rte_mempool_get(qp->sess_mp, &_sess))
 191                         return sess;
 192
 193                 sess = (struct aesni_gcm_session *)
 194                         ((struct rte_cryptodev_sym_session *)_sess)->_private;
 195
 196                 if (unlikely(aesni_gcm_set_session_parameters(sess,
 197                                 sym_op->xform) != 0)) {
 198                         rte_mempool_put(qp->sess_mp, _sess);
 199                         sess = NULL;
 200                 }
 201         }
 202         return sess;
 203 }
 204
 205 /**
 206  * Process a crypto operation and complete a JOB_AES_HMAC job structure for
 207  * submission to the multi buffer library for processing.
 208  *
 209  * @param       qp              queue pair
 210  * @param       op              symmetric crypto operation
 211  * @param       session         GCM session
 212  *
 213  * @return
 214  *
 215  */
 216 static int
 217 process_gcm_crypto_op(struct rte_crypto_op *op,
 218                 struct aesni_gcm_session *session)
 219 {
 220         uint8_t *src, *dst;
 221         uint8_t *iv_ptr;
 222         struct rte_crypto_sym_op *sym_op = op->sym;
 223         struct rte_mbuf *m_src = sym_op->m_src;
 224         uint32_t offset, data_offset, data_length;
 225         uint32_t part_len, total_len, data_len;
 226
 227         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION ||
 228                         session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 229                 offset = sym_op->aead.data.offset;
 230                 data_offset = offset;
 231                 data_length = sym_op->aead.data.length;
 232         } else {
 233                 offset = sym_op->auth.data.offset;
 234                 data_offset = offset;
 235                 data_length = sym_op->auth.data.length;
 236         }
 237
 238         RTE_ASSERT(m_src != NULL);
 239
 240         while (offset >= m_src->data_len) {
 241                 offset -= m_src->data_len;
 242                 m_src = m_src->next;
 243
 244                 RTE_ASSERT(m_src != NULL);
 245         }
 246
 247         data_len = m_src->data_len - offset;
 248         part_len = (data_len < data_length) ? data_len :
 249                         data_length;
 250
 251         /* Destination buffer is required when segmented source buffer */
 252         RTE_ASSERT((part_len == data_length) ||
 253                         ((part_len != data_length) &&
 254                                         (sym_op->m_dst != NULL)));
 255         /* Segmented destination buffer is not supported */
 256         RTE_ASSERT((sym_op->m_dst == NULL) ||
 257                         ((sym_op->m_dst != NULL) &&
 258                                         rte_pktmbuf_is_contiguous(sym_op->m_dst)));
 259
 260
 261         dst = sym_op->m_dst ?
 262                         rte_pktmbuf_mtod_offset(sym_op->m_dst, uint8_t *,
 263                                         data_offset) :
 264                         rte_pktmbuf_mtod_offset(sym_op->m_src, uint8_t *,
 265                                         data_offset);
 266
 267         src = rte_pktmbuf_mtod_offset(m_src, uint8_t *, offset);
 268
 269         iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
 270                                 session->iv.offset);
 271         /*
 272          * GCM working in 12B IV mode => 16B pre-counter block we need
 273          * to set BE LSB to 1, driver expects that 16B is allocated
 274          */
 275         if (session->iv.length == 12) {
 276                 uint32_t *iv_padd = (uint32_t *)&(iv_ptr[12]);
 277                 *iv_padd = rte_bswap32(1);
 278         }
 279
 280         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION) {
 281
 282                 aesni_gcm_enc[session->key].init(&session->gdata,
 283                                 iv_ptr,
 284                                 sym_op->aead.aad.data,
 285                                 (uint64_t)session->aad_length);
 286
 287                 aesni_gcm_enc[session->key].update(&session->gdata, dst, src,
 288                                 (uint64_t)part_len);
 289                 total_len = data_length - part_len;
 290
 291                 while (total_len) {
 292                         dst += part_len;
 293                         m_src = m_src->next;
 294
 295                         RTE_ASSERT(m_src != NULL);
 296
 297                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 298                         part_len = (m_src->data_len < total_len) ?
 299                                         m_src->data_len : total_len;
 300
 301                         aesni_gcm_enc[session->key].update(&session->gdata,
 302                                         dst, src,
 303                                         (uint64_t)part_len);
 304                         total_len -= part_len;
 305                 }
 306
 307                 aesni_gcm_enc[session->key].finalize(&session->gdata,
 308                                 sym_op->aead.digest.data,
 309                                 (uint64_t)session->digest_length);
 310         } else if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 311                 uint8_t *auth_tag = (uint8_t *)rte_pktmbuf_append(sym_op->m_dst ?
 312                                 sym_op->m_dst : sym_op->m_src,
 313                                 session->digest_length);
 314
 315                 if (!auth_tag) {
 316                         GCM_LOG_ERR("auth_tag");
 317                         return -1;
 318                 }
 319
 320                 aesni_gcm_dec[session->key].init(&session->gdata,
 321                                 iv_ptr,
 322                                 sym_op->aead.aad.data,
 323                                 (uint64_t)session->aad_length);
 324
 325                 aesni_gcm_dec[session->key].update(&session->gdata, dst, src,
 326                                 (uint64_t)part_len);
 327                 total_len = data_length - part_len;
 328
 329                 while (total_len) {
 330                         dst += part_len;
 331                         m_src = m_src->next;
 332
 333                         RTE_ASSERT(m_src != NULL);
 334
 335                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 336                         part_len = (m_src->data_len < total_len) ?
 337                                         m_src->data_len : total_len;
 338
 339                         aesni_gcm_dec[session->key].update(&session->gdata,
 340                                         dst, src,
 341                                         (uint64_t)part_len);
 342                         total_len -= part_len;
 343                 }
 344
 345                 aesni_gcm_dec[session->key].finalize(&session->gdata,
 346                                 auth_tag,
 347                                 (uint64_t)session->digest_length);
 348         } else if (session->op == AESNI_GMAC_OP_GENERATE) {
 349                 aesni_gcm_enc[session->key].init(&session->gdata,
 350                                 iv_ptr,
 351                                 src,
 352                                 (uint64_t)data_length);
 353                 aesni_gcm_enc[session->key].finalize(&session->gdata,
 354                                 sym_op->auth.digest.data,
 355                                 (uint64_t)session->digest_length);
 356         } else { /* AESNI_GMAC_OP_VERIFY */
 357                 uint8_t *auth_tag = (uint8_t *)rte_pktmbuf_append(sym_op->m_dst ?
 358                                 sym_op->m_dst : sym_op->m_src,
 359                                 session->digest_length);
 360
 361                 if (!auth_tag) {
 362                         GCM_LOG_ERR("auth_tag");
 363                         return -1;
 364                 }
 365
 366                 aesni_gcm_dec[session->key].init(&session->gdata,
 367                                 iv_ptr,
 368                                 src,
 369                                 (uint64_t)data_length);
 370
 371                 aesni_gcm_dec[session->key].finalize(&session->gdata,
 372                                 auth_tag,
 373                                 (uint64_t)session->digest_length);
 374         }
 375
 376         return 0;
 377 }
 378
 379 /**
 380  * Process a completed job and return rte_mbuf which job processed
 381  *
 382  * @param job   JOB_AES_HMAC job to process
 383  *
 384  * @return
 385  * - Returns processed mbuf which is trimmed of output digest used in
 386  * verification of supplied digest in the case of a HASH_CIPHER operation
 387  * - Returns NULL on invalid job
 388  */
 389 static void
 390 post_process_gcm_crypto_op(struct rte_crypto_op *op)
 391 {
 392         struct rte_mbuf *m = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
 393
 394         struct aesni_gcm_session *session =
 395                 (struct aesni_gcm_session *)op->sym->session->_private;
 396
 397         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 398
 399         /* Verify digest if required */
 400         if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION ||
 401                         session->op == AESNI_GMAC_OP_VERIFY) {
 402                 uint8_t *digest;
 403
 404                 uint8_t *tag = rte_pktmbuf_mtod_offset(m, uint8_t *,
 405                                 m->data_len - session->digest_length);
 406
 407                 if (session->op == AESNI_GMAC_OP_VERIFY)
 408                         digest = op->sym->auth.digest.data;
 409                 else
 410                         digest = op->sym->aead.digest.data;
 411
 412 #ifdef RTE_LIBRTE_PMD_AESNI_GCM_DEBUG
 413                 rte_hexdump(stdout, "auth tag (orig):",
 414                                 digest, session->digest_length);
 415                 rte_hexdump(stdout, "auth tag (calc):",
 416                                 tag, session->digest_length);
 417 #endif
 418
 419                 if (memcmp(tag, digest, session->digest_length) != 0)
 420                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 421
 422                 /* trim area used for digest from mbuf */
 423                 rte_pktmbuf_trim(m, session->digest_length);
 424         }
 425 }
 426
 427 /**
 428  * Process a completed GCM request
 429  *
 430  * @param qp            Queue Pair to process
 431  * @param job           JOB_AES_HMAC job
 432  *
 433  * @return
 434  * - Number of processed jobs
 435  */
 436 static void
 437 handle_completed_gcm_crypto_op(struct aesni_gcm_qp *qp,
 438                 struct rte_crypto_op *op)
 439 {
 440         post_process_gcm_crypto_op(op);
 441
 442         /* Free session if a session-less crypto op */
 443         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 444                 rte_mempool_put(qp->sess_mp, op->sym->session);
 445                 op->sym->session = NULL;
 446         }
 447 }
 448
 449 static uint16_t
 450 aesni_gcm_pmd_dequeue_burst(void *queue_pair,
 451                 struct rte_crypto_op **ops, uint16_t nb_ops)
 452 {
 453         struct aesni_gcm_session *sess;
 454         struct aesni_gcm_qp *qp = queue_pair;
 455
 456         int retval = 0;
 457         unsigned int i, nb_dequeued;
 458
 459         nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts,
 460                         (void **)ops, nb_ops, NULL);
 461
 462         for (i = 0; i < nb_dequeued; i++) {
 463
 464                 sess = aesni_gcm_get_session(qp, ops[i]);
 465                 if (unlikely(sess == NULL)) {
 466                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 467                         qp->qp_stats.dequeue_err_count++;
 468                         break;
 469                 }
 470
 471                 retval = process_gcm_crypto_op(ops[i], sess);
 472                 if (retval < 0) {
 473                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 474                         qp->qp_stats.dequeue_err_count++;
 475                         break;
 476                 }
 477
 478                 handle_completed_gcm_crypto_op(qp, ops[i]);
 479         }
 480
 481         qp->qp_stats.dequeued_count += i;
 482
 483         return i;
 484 }
 485
 486 static uint16_t
 487 aesni_gcm_pmd_enqueue_burst(void *queue_pair,
 488                 struct rte_crypto_op **ops, uint16_t nb_ops)
 489 {
 490         struct aesni_gcm_qp *qp = queue_pair;
 491
 492         unsigned int nb_enqueued;
 493
 494         nb_enqueued = rte_ring_enqueue_burst(qp->processed_pkts,
 495                         (void **)ops, nb_ops, NULL);
 496         qp->qp_stats.enqueued_count += nb_enqueued;
 497
 498         return nb_enqueued;
 499 }
 500
 501 static int aesni_gcm_remove(struct rte_vdev_device *vdev);
 502
 503 static int
 504 aesni_gcm_create(const char *name,
 505                 struct rte_vdev_device *vdev,
 506                 struct rte_crypto_vdev_init_params *init_params)
 507 {
 508         struct rte_cryptodev *dev;
 509         struct aesni_gcm_private *internals;
 510
 511         if (init_params->name[0] == '\0')
 512                 snprintf(init_params->name, sizeof(init_params->name),
 513                                 "%s", name);
 514
 515         /* Check CPU for support for AES instruction set */
 516         if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
 517                 GCM_LOG_ERR("AES instructions not supported by CPU");
 518                 return -EFAULT;
 519         }
 520
 521         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 522                         sizeof(struct aesni_gcm_private), init_params->socket_id,
 523                         vdev);
 524         if (dev == NULL) {
 525                 GCM_LOG_ERR("failed to create cryptodev vdev");
 526                 goto init_error;
 527         }
 528
 529         dev->dev_type = RTE_CRYPTODEV_AESNI_GCM_PMD;
 530         dev->dev_ops = rte_aesni_gcm_pmd_ops;
 531
 532         /* register rx/tx burst functions for data path */
 533         dev->dequeue_burst = aesni_gcm_pmd_dequeue_burst;
 534         dev->enqueue_burst = aesni_gcm_pmd_enqueue_burst;
 535
 536         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 537                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 538                         RTE_CRYPTODEV_FF_CPU_AESNI |
 539                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
 540
 541         internals = dev->data->dev_private;
 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 init_error:
 549         GCM_LOG_ERR("driver %s: create failed", init_params->name);
 550
 551         aesni_gcm_remove(vdev);
 552         return -EFAULT;
 553 }
 554
 555 static int
 556 aesni_gcm_probe(struct rte_vdev_device *vdev)
 557 {
 558         struct rte_crypto_vdev_init_params init_params = {
 559                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 560                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 561                 rte_socket_id(),
 562                 {0}
 563         };
 564         const char *name;
 565         const char *input_args;
 566
 567         name = rte_vdev_device_name(vdev);
 568         if (name == NULL)
 569                 return -EINVAL;
 570         input_args = rte_vdev_device_args(vdev);
 571         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 572
 573         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 574                         init_params.socket_id);
 575         if (init_params.name[0] != '\0')
 576                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 577                         init_params.name);
 578         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 579                         init_params.max_nb_queue_pairs);
 580         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 581                         init_params.max_nb_sessions);
 582
 583         return aesni_gcm_create(name, vdev, &init_params);
 584 }
 585
 586 static int
 587 aesni_gcm_remove(struct rte_vdev_device *vdev)
 588 {
 589         const char *name;
 590
 591         name = rte_vdev_device_name(vdev);
 592         if (name == NULL)
 593                 return -EINVAL;
 594
 595         GCM_LOG_INFO("Closing AESNI crypto device %s on numa socket %u\n",
 596                         name, rte_socket_id());
 597
 598         return 0;
 599 }
 600
 601 static struct rte_vdev_driver aesni_gcm_pmd_drv = {
 602         .probe = aesni_gcm_probe,
 603         .remove = aesni_gcm_remove
 604 };
 605
 606 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_AESNI_GCM_PMD, aesni_gcm_pmd_drv);
 607 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_AESNI_GCM_PMD, cryptodev_aesni_gcm_pmd);
 608 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_AESNI_GCM_PMD,
 609         "max_nb_queue_pairs=<int> "
 610         "max_nb_sessions=<int> "
 611         "socket_id=<int>");