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 static uint8_t cryptodev_driver_id;
  47
  48 /** Parse crypto xform chain and set private session parameters */
  49 int
  50 aesni_gcm_set_session_parameters(const struct aesni_gcm_ops *gcm_ops,
  51                 struct aesni_gcm_session *sess,
  52                 const struct rte_crypto_sym_xform *xform)
  53 {
  54         const struct rte_crypto_sym_xform *auth_xform;
  55         const struct rte_crypto_sym_xform *aead_xform;
  56         uint16_t digest_length;
  57         uint8_t key_length;
  58         uint8_t *key;
  59
  60         /* AES-GMAC */
  61         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  62                 auth_xform = xform;
  63                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_AES_GMAC) {
  64                         GCM_LOG_ERR("Only AES GMAC is supported as an "
  65                                         "authentication only algorithm");
  66                         return -EINVAL;
  67                 }
  68                 /* Set IV parameters */
  69                 sess->iv.offset = auth_xform->auth.iv.offset;
  70                 sess->iv.length = auth_xform->auth.iv.length;
  71
  72                 /* Select Crypto operation */
  73                 if (auth_xform->auth.op == RTE_CRYPTO_AUTH_OP_GENERATE)
  74                         sess->op = AESNI_GMAC_OP_GENERATE;
  75                 else
  76                         sess->op = AESNI_GMAC_OP_VERIFY;
  77
  78                 key_length = auth_xform->auth.key.length;
  79                 key = auth_xform->auth.key.data;
  80                 digest_length = auth_xform->auth.digest_length;
  81
  82         /* AES-GCM */
  83         } else if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
  84                 aead_xform = xform;
  85
  86                 if (aead_xform->aead.algo != RTE_CRYPTO_AEAD_AES_GCM) {
  87                         GCM_LOG_ERR("The only combined operation "
  88                                                 "supported is AES GCM");
  89                         return -EINVAL;
  90                 }
  91
  92                 /* Set IV parameters */
  93                 sess->iv.offset = aead_xform->aead.iv.offset;
  94                 sess->iv.length = aead_xform->aead.iv.length;
  95
  96                 /* Select Crypto operation */
  97                 if (aead_xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT)
  98                         sess->op = AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION;
  99                 else
 100                         sess->op = AESNI_GCM_OP_AUTHENTICATED_DECRYPTION;
 101
 102                 key_length = aead_xform->aead.key.length;
 103                 key = aead_xform->aead.key.data;
 104
 105                 sess->aad_length = aead_xform->aead.add_auth_data_length;
 106                 digest_length = aead_xform->aead.digest_length;
 107         } else {
 108                 GCM_LOG_ERR("Wrong xform type, has to be AEAD or authentication");
 109                 return -EINVAL;
 110         }
 111
 112
 113         /* IV check */
 114         if (sess->iv.length != 16 && sess->iv.length != 12 &&
 115                         sess->iv.length != 0) {
 116                 GCM_LOG_ERR("Wrong IV length");
 117                 return -EINVAL;
 118         }
 119
 120         /* Check key length and calculate GCM pre-compute. */
 121         switch (key_length) {
 122         case 16:
 123                 sess->key = AESNI_GCM_KEY_128;
 124                 break;
 125         case 24:
 126                 sess->key = AESNI_GCM_KEY_192;
 127                 break;
 128         case 32:
 129                 sess->key = AESNI_GCM_KEY_256;
 130                 break;
 131         default:
 132                 GCM_LOG_ERR("Unsupported key length");
 133                 return -EINVAL;
 134         }
 135
 136         gcm_ops[sess->key].precomp(key, &sess->gdata_key);
 137
 138         /* Digest check */
 139         if (digest_length != 16 &&
 140                         digest_length != 12 &&
 141                         digest_length != 8) {
 142                 GCM_LOG_ERR("digest");
 143                 return -EINVAL;
 144         }
 145         sess->digest_length = digest_length;
 146
 147         return 0;
 148 }
 149
 150 /** Get gcm session */
 151 static struct aesni_gcm_session *
 152 aesni_gcm_get_session(struct aesni_gcm_qp *qp, struct rte_crypto_op *op)
 153 {
 154         struct aesni_gcm_session *sess = NULL;
 155         struct rte_crypto_sym_op *sym_op = op->sym;
 156
 157         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 158                 sess = (struct aesni_gcm_session *)sym_op->session->_private;
 159         } else  {
 160                 void *_sess;
 161
 162                 if (rte_mempool_get(qp->sess_mp, &_sess))
 163                         return sess;
 164
 165                 sess = (struct aesni_gcm_session *)
 166                         ((struct rte_cryptodev_sym_session *)_sess)->_private;
 167
 168                 if (unlikely(aesni_gcm_set_session_parameters(qp->ops, sess,
 169                                 sym_op->xform) != 0)) {
 170                         rte_mempool_put(qp->sess_mp, _sess);
 171                         sess = NULL;
 172                 }
 173         }
 174         return sess;
 175 }
 176
 177 /**
 178  * Process a crypto operation, calling
 179  * the GCM API from the multi buffer library.
 180  *
 181  * @param       qp              queue pair
 182  * @param       op              symmetric crypto operation
 183  * @param       session         GCM session
 184  *
 185  * @return
 186  *
 187  */
 188 static int
 189 process_gcm_crypto_op(struct aesni_gcm_qp *qp, struct rte_crypto_op *op,
 190                 struct aesni_gcm_session *session)
 191 {
 192         uint8_t *src, *dst;
 193         uint8_t *iv_ptr;
 194         struct rte_crypto_sym_op *sym_op = op->sym;
 195         struct rte_mbuf *m_src = sym_op->m_src;
 196         uint32_t offset, data_offset, data_length;
 197         uint32_t part_len, total_len, data_len;
 198
 199         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION ||
 200                         session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 201                 offset = sym_op->aead.data.offset;
 202                 data_offset = offset;
 203                 data_length = sym_op->aead.data.length;
 204         } else {
 205                 offset = sym_op->auth.data.offset;
 206                 data_offset = offset;
 207                 data_length = sym_op->auth.data.length;
 208         }
 209
 210         RTE_ASSERT(m_src != NULL);
 211
 212         while (offset >= m_src->data_len) {
 213                 offset -= m_src->data_len;
 214                 m_src = m_src->next;
 215
 216                 RTE_ASSERT(m_src != NULL);
 217         }
 218
 219         data_len = m_src->data_len - offset;
 220         part_len = (data_len < data_length) ? data_len :
 221                         data_length;
 222
 223         /* Destination buffer is required when segmented source buffer */
 224         RTE_ASSERT((part_len == data_length) ||
 225                         ((part_len != data_length) &&
 226                                         (sym_op->m_dst != NULL)));
 227         /* Segmented destination buffer is not supported */
 228         RTE_ASSERT((sym_op->m_dst == NULL) ||
 229                         ((sym_op->m_dst != NULL) &&
 230                                         rte_pktmbuf_is_contiguous(sym_op->m_dst)));
 231
 232
 233         dst = sym_op->m_dst ?
 234                         rte_pktmbuf_mtod_offset(sym_op->m_dst, uint8_t *,
 235                                         data_offset) :
 236                         rte_pktmbuf_mtod_offset(sym_op->m_src, uint8_t *,
 237                                         data_offset);
 238
 239         src = rte_pktmbuf_mtod_offset(m_src, uint8_t *, offset);
 240
 241         iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
 242                                 session->iv.offset);
 243         /*
 244          * GCM working in 12B IV mode => 16B pre-counter block we need
 245          * to set BE LSB to 1, driver expects that 16B is allocated
 246          */
 247         if (session->iv.length == 12) {
 248                 uint32_t *iv_padd = (uint32_t *)&(iv_ptr[12]);
 249                 *iv_padd = rte_bswap32(1);
 250         }
 251
 252         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION) {
 253
 254                 qp->ops[session->key].init(&session->gdata_key,
 255                                 &qp->gdata_ctx,
 256                                 iv_ptr,
 257                                 sym_op->aead.aad.data,
 258                                 (uint64_t)session->aad_length);
 259
 260                 qp->ops[session->key].update_enc(&session->gdata_key,
 261                                 &qp->gdata_ctx, dst, src,
 262                                 (uint64_t)part_len);
 263                 total_len = data_length - part_len;
 264
 265                 while (total_len) {
 266                         dst += part_len;
 267                         m_src = m_src->next;
 268
 269                         RTE_ASSERT(m_src != NULL);
 270
 271                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 272                         part_len = (m_src->data_len < total_len) ?
 273                                         m_src->data_len : total_len;
 274
 275                         qp->ops[session->key].update_enc(&session->gdata_key,
 276                                         &qp->gdata_ctx, dst, src,
 277                                         (uint64_t)part_len);
 278                         total_len -= part_len;
 279                 }
 280
 281                 qp->ops[session->key].finalize(&session->gdata_key,
 282                                 &qp->gdata_ctx,
 283                                 sym_op->aead.digest.data,
 284                                 (uint64_t)session->digest_length);
 285         } else if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 286                 uint8_t *auth_tag = (uint8_t *)rte_pktmbuf_append(sym_op->m_dst ?
 287                                 sym_op->m_dst : sym_op->m_src,
 288                                 session->digest_length);
 289
 290                 if (!auth_tag) {
 291                         GCM_LOG_ERR("auth_tag");
 292                         return -1;
 293                 }
 294
 295                 qp->ops[session->key].init(&session->gdata_key,
 296                                 &qp->gdata_ctx,
 297                                 iv_ptr,
 298                                 sym_op->aead.aad.data,
 299                                 (uint64_t)session->aad_length);
 300
 301                 qp->ops[session->key].update_dec(&session->gdata_key,
 302                                 &qp->gdata_ctx, dst, src,
 303                                 (uint64_t)part_len);
 304                 total_len = data_length - part_len;
 305
 306                 while (total_len) {
 307                         dst += part_len;
 308                         m_src = m_src->next;
 309
 310                         RTE_ASSERT(m_src != NULL);
 311
 312                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 313                         part_len = (m_src->data_len < total_len) ?
 314                                         m_src->data_len : total_len;
 315
 316                         qp->ops[session->key].update_dec(&session->gdata_key,
 317                                         &qp->gdata_ctx,
 318                                         dst, src,
 319                                         (uint64_t)part_len);
 320                         total_len -= part_len;
 321                 }
 322
 323                 qp->ops[session->key].finalize(&session->gdata_key,
 324                                 &qp->gdata_ctx,
 325                                 auth_tag,
 326                                 (uint64_t)session->digest_length);
 327         } else if (session->op == AESNI_GMAC_OP_GENERATE) {
 328                 qp->ops[session->key].init(&session->gdata_key,
 329                                 &qp->gdata_ctx,
 330                                 iv_ptr,
 331                                 src,
 332                                 (uint64_t)data_length);
 333                 qp->ops[session->key].finalize(&session->gdata_key,
 334                                 &qp->gdata_ctx,
 335                                 sym_op->auth.digest.data,
 336                                 (uint64_t)session->digest_length);
 337         } else { /* AESNI_GMAC_OP_VERIFY */
 338                 uint8_t *auth_tag = (uint8_t *)rte_pktmbuf_append(sym_op->m_dst ?
 339                                 sym_op->m_dst : sym_op->m_src,
 340                                 session->digest_length);
 341
 342                 if (!auth_tag) {
 343                         GCM_LOG_ERR("auth_tag");
 344                         return -1;
 345                 }
 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 rte_crypto_op *op)
 374 {
 375         struct rte_mbuf *m = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
 376
 377         struct aesni_gcm_session *session =
 378                 (struct aesni_gcm_session *)op->sym->session->_private;
 379
 380         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 381
 382         /* Verify digest if required */
 383         if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION ||
 384                         session->op == AESNI_GMAC_OP_VERIFY) {
 385                 uint8_t *digest;
 386
 387                 uint8_t *tag = rte_pktmbuf_mtod_offset(m, uint8_t *,
 388                                 m->data_len - session->digest_length);
 389
 390                 if (session->op == AESNI_GMAC_OP_VERIFY)
 391                         digest = op->sym->auth.digest.data;
 392                 else
 393                         digest = op->sym->aead.digest.data;
 394
 395 #ifdef RTE_LIBRTE_PMD_AESNI_GCM_DEBUG
 396                 rte_hexdump(stdout, "auth tag (orig):",
 397                                 digest, session->digest_length);
 398                 rte_hexdump(stdout, "auth tag (calc):",
 399                                 tag, session->digest_length);
 400 #endif
 401
 402                 if (memcmp(tag, digest, session->digest_length) != 0)
 403                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 404
 405                 /* trim area used for digest from mbuf */
 406                 rte_pktmbuf_trim(m, session->digest_length);
 407         }
 408 }
 409
 410 /**
 411  * Process a completed GCM request
 412  *
 413  * @param qp            Queue Pair to process
 414  * @param job           JOB_AES_HMAC job
 415  *
 416  * @return
 417  * - Number of processed jobs
 418  */
 419 static void
 420 handle_completed_gcm_crypto_op(struct aesni_gcm_qp *qp,
 421                 struct rte_crypto_op *op)
 422 {
 423         post_process_gcm_crypto_op(op);
 424
 425         /* Free session if a session-less crypto op */
 426         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 427                 rte_mempool_put(qp->sess_mp, op->sym->session);
 428                 op->sym->session = NULL;
 429         }
 430 }
 431
 432 static uint16_t
 433 aesni_gcm_pmd_dequeue_burst(void *queue_pair,
 434                 struct rte_crypto_op **ops, uint16_t nb_ops)
 435 {
 436         struct aesni_gcm_session *sess;
 437         struct aesni_gcm_qp *qp = queue_pair;
 438
 439         int retval = 0;
 440         unsigned int i, nb_dequeued;
 441
 442         nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts,
 443                         (void **)ops, nb_ops, NULL);
 444
 445         for (i = 0; i < nb_dequeued; i++) {
 446
 447                 sess = aesni_gcm_get_session(qp, ops[i]);
 448                 if (unlikely(sess == NULL)) {
 449                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 450                         qp->qp_stats.dequeue_err_count++;
 451                         break;
 452                 }
 453
 454                 retval = process_gcm_crypto_op(qp, ops[i], sess);
 455                 if (retval < 0) {
 456                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 457                         qp->qp_stats.dequeue_err_count++;
 458                         break;
 459                 }
 460
 461                 handle_completed_gcm_crypto_op(qp, ops[i]);
 462         }
 463
 464         qp->qp_stats.dequeued_count += i;
 465
 466         return i;
 467 }
 468
 469 static uint16_t
 470 aesni_gcm_pmd_enqueue_burst(void *queue_pair,
 471                 struct rte_crypto_op **ops, uint16_t nb_ops)
 472 {
 473         struct aesni_gcm_qp *qp = queue_pair;
 474
 475         unsigned int nb_enqueued;
 476
 477         nb_enqueued = rte_ring_enqueue_burst(qp->processed_pkts,
 478                         (void **)ops, nb_ops, NULL);
 479         qp->qp_stats.enqueued_count += nb_enqueued;
 480
 481         return nb_enqueued;
 482 }
 483
 484 static int aesni_gcm_remove(struct rte_vdev_device *vdev);
 485
 486 static int
 487 aesni_gcm_create(const char *name,
 488                 struct rte_vdev_device *vdev,
 489                 struct rte_crypto_vdev_init_params *init_params)
 490 {
 491         struct rte_cryptodev *dev;
 492         struct aesni_gcm_private *internals;
 493         enum aesni_gcm_vector_mode vector_mode;
 494
 495         if (init_params->name[0] == '\0')
 496                 snprintf(init_params->name, sizeof(init_params->name),
 497                                 "%s", name);
 498
 499         /* Check CPU for support for AES instruction set */
 500         if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
 501                 GCM_LOG_ERR("AES instructions not supported by CPU");
 502                 return -EFAULT;
 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 = rte_cryptodev_vdev_pmd_init(init_params->name,
 514                         sizeof(struct aesni_gcm_private), init_params->socket_id,
 515                         vdev);
 516         if (dev == NULL) {
 517                 GCM_LOG_ERR("failed to create cryptodev vdev");
 518                 goto init_error;
 519         }
 520
 521         dev->driver_id = cryptodev_driver_id;
 522         dev->dev_ops = rte_aesni_gcm_pmd_ops;
 523
 524         /* register rx/tx burst functions for data path */
 525         dev->dequeue_burst = aesni_gcm_pmd_dequeue_burst;
 526         dev->enqueue_burst = aesni_gcm_pmd_enqueue_burst;
 527
 528         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 529                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 530                         RTE_CRYPTODEV_FF_CPU_AESNI |
 531                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
 532
 533         switch (vector_mode) {
 534         case RTE_AESNI_GCM_SSE:
 535                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 536                 break;
 537         case RTE_AESNI_GCM_AVX:
 538                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX;
 539                 break;
 540         case RTE_AESNI_GCM_AVX2:
 541                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2;
 542                 break;
 543         default:
 544                 break;
 545         }
 546
 547         internals = dev->data->dev_private;
 548
 549         internals->vector_mode = vector_mode;
 550
 551         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 552         internals->max_nb_sessions = init_params->max_nb_sessions;
 553
 554         return 0;
 555
 556 init_error:
 557         GCM_LOG_ERR("driver %s: create failed", init_params->name);
 558
 559         aesni_gcm_remove(vdev);
 560         return -EFAULT;
 561 }
 562
 563 static int
 564 aesni_gcm_probe(struct rte_vdev_device *vdev)
 565 {
 566         struct rte_crypto_vdev_init_params init_params = {
 567                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 568                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 569                 rte_socket_id(),
 570                 {0}
 571         };
 572         const char *name;
 573         const char *input_args;
 574
 575         name = rte_vdev_device_name(vdev);
 576         if (name == NULL)
 577                 return -EINVAL;
 578         input_args = rte_vdev_device_args(vdev);
 579         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 580
 581         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 582                         init_params.socket_id);
 583         if (init_params.name[0] != '\0')
 584                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 585                         init_params.name);
 586         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 587                         init_params.max_nb_queue_pairs);
 588         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 589                         init_params.max_nb_sessions);
 590
 591         return aesni_gcm_create(name, vdev, &init_params);
 592 }
 593
 594 static int
 595 aesni_gcm_remove(struct rte_vdev_device *vdev)
 596 {
 597         const char *name;
 598
 599         name = rte_vdev_device_name(vdev);
 600         if (name == NULL)
 601                 return -EINVAL;
 602
 603         GCM_LOG_INFO("Closing AESNI crypto device %s on numa socket %u\n",
 604                         name, rte_socket_id());
 605
 606         return 0;
 607 }
 608
 609 static struct rte_vdev_driver aesni_gcm_pmd_drv = {
 610         .probe = aesni_gcm_probe,
 611         .remove = aesni_gcm_remove
 612 };
 613
 614 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_AESNI_GCM_PMD, aesni_gcm_pmd_drv);
 615 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_AESNI_GCM_PMD, cryptodev_aesni_gcm_pmd);
 616 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_AESNI_GCM_PMD,
 617         "max_nb_queue_pairs=<int> "
 618         "max_nb_sessions=<int> "
 619         "socket_id=<int>");
 620 RTE_PMD_REGISTER_CRYPTO_DRIVER(aesni_gcm_pmd_drv, cryptodev_driver_id);