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
  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 -EINVAL;
  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 -EINVAL;
  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.add_auth_data_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 -EINVAL;
 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("Unsupported 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 (unlikely(sym_op->session->dev_type
 158                                         != RTE_CRYPTODEV_AESNI_GCM_PMD))
 159                         return sess;
 160
 161                 sess = (struct aesni_gcm_session *)sym_op->session->_private;
 162         } else  {
 163                 void *_sess;
 164
 165                 if (rte_mempool_get(qp->sess_mp, &_sess))
 166                         return sess;
 167
 168                 sess = (struct aesni_gcm_session *)
 169                         ((struct rte_cryptodev_sym_session *)_sess)->_private;
 170
 171                 if (unlikely(aesni_gcm_set_session_parameters(qp->ops, sess,
 172                                 sym_op->xform) != 0)) {
 173                         rte_mempool_put(qp->sess_mp, _sess);
 174                         sess = NULL;
 175                 }
 176         }
 177         return sess;
 178 }
 179
 180 /**
 181  * Process a crypto operation, calling
 182  * the GCM API from the multi buffer library.
 183  *
 184  * @param       qp              queue pair
 185  * @param       op              symmetric crypto operation
 186  * @param       session         GCM session
 187  *
 188  * @return
 189  *
 190  */
 191 static int
 192 process_gcm_crypto_op(struct aesni_gcm_qp *qp, struct rte_crypto_op *op,
 193                 struct aesni_gcm_session *session)
 194 {
 195         uint8_t *src, *dst;
 196         uint8_t *iv_ptr;
 197         struct rte_crypto_sym_op *sym_op = op->sym;
 198         struct rte_mbuf *m_src = sym_op->m_src;
 199         uint32_t offset, data_offset, data_length;
 200         uint32_t part_len, total_len, data_len;
 201
 202         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION ||
 203                         session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 204                 offset = sym_op->aead.data.offset;
 205                 data_offset = offset;
 206                 data_length = sym_op->aead.data.length;
 207         } else {
 208                 offset = sym_op->auth.data.offset;
 209                 data_offset = offset;
 210                 data_length = sym_op->auth.data.length;
 211         }
 212
 213         RTE_ASSERT(m_src != NULL);
 214
 215         while (offset >= m_src->data_len) {
 216                 offset -= m_src->data_len;
 217                 m_src = m_src->next;
 218
 219                 RTE_ASSERT(m_src != NULL);
 220         }
 221
 222         data_len = m_src->data_len - offset;
 223         part_len = (data_len < data_length) ? data_len :
 224                         data_length;
 225
 226         /* Destination buffer is required when segmented source buffer */
 227         RTE_ASSERT((part_len == data_length) ||
 228                         ((part_len != data_length) &&
 229                                         (sym_op->m_dst != NULL)));
 230         /* Segmented destination buffer is not supported */
 231         RTE_ASSERT((sym_op->m_dst == NULL) ||
 232                         ((sym_op->m_dst != NULL) &&
 233                                         rte_pktmbuf_is_contiguous(sym_op->m_dst)));
 234
 235
 236         dst = sym_op->m_dst ?
 237                         rte_pktmbuf_mtod_offset(sym_op->m_dst, uint8_t *,
 238                                         data_offset) :
 239                         rte_pktmbuf_mtod_offset(sym_op->m_src, uint8_t *,
 240                                         data_offset);
 241
 242         src = rte_pktmbuf_mtod_offset(m_src, uint8_t *, offset);
 243
 244         iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
 245                                 session->iv.offset);
 246         /*
 247          * GCM working in 12B IV mode => 16B pre-counter block we need
 248          * to set BE LSB to 1, driver expects that 16B is allocated
 249          */
 250         if (session->iv.length == 12) {
 251                 uint32_t *iv_padd = (uint32_t *)&(iv_ptr[12]);
 252                 *iv_padd = rte_bswap32(1);
 253         }
 254
 255         if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION) {
 256
 257                 qp->ops[session->key].init(&session->gdata_key,
 258                                 &qp->gdata_ctx,
 259                                 iv_ptr,
 260                                 sym_op->aead.aad.data,
 261                                 (uint64_t)session->aad_length);
 262
 263                 qp->ops[session->key].update_enc(&session->gdata_key,
 264                                 &qp->gdata_ctx, dst, src,
 265                                 (uint64_t)part_len);
 266                 total_len = data_length - part_len;
 267
 268                 while (total_len) {
 269                         dst += part_len;
 270                         m_src = m_src->next;
 271
 272                         RTE_ASSERT(m_src != NULL);
 273
 274                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 275                         part_len = (m_src->data_len < total_len) ?
 276                                         m_src->data_len : total_len;
 277
 278                         qp->ops[session->key].update_enc(&session->gdata_key,
 279                                         &qp->gdata_ctx, dst, src,
 280                                         (uint64_t)part_len);
 281                         total_len -= part_len;
 282                 }
 283
 284                 qp->ops[session->key].finalize(&session->gdata_key,
 285                                 &qp->gdata_ctx,
 286                                 sym_op->aead.digest.data,
 287                                 (uint64_t)session->digest_length);
 288         } else if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION) {
 289                 uint8_t *auth_tag = (uint8_t *)rte_pktmbuf_append(sym_op->m_dst ?
 290                                 sym_op->m_dst : sym_op->m_src,
 291                                 session->digest_length);
 292
 293                 if (!auth_tag) {
 294                         GCM_LOG_ERR("auth_tag");
 295                         return -1;
 296                 }
 297
 298                 qp->ops[session->key].init(&session->gdata_key,
 299                                 &qp->gdata_ctx,
 300                                 iv_ptr,
 301                                 sym_op->aead.aad.data,
 302                                 (uint64_t)session->aad_length);
 303
 304                 qp->ops[session->key].update_dec(&session->gdata_key,
 305                                 &qp->gdata_ctx, dst, src,
 306                                 (uint64_t)part_len);
 307                 total_len = data_length - part_len;
 308
 309                 while (total_len) {
 310                         dst += part_len;
 311                         m_src = m_src->next;
 312
 313                         RTE_ASSERT(m_src != NULL);
 314
 315                         src = rte_pktmbuf_mtod(m_src, uint8_t *);
 316                         part_len = (m_src->data_len < total_len) ?
 317                                         m_src->data_len : total_len;
 318
 319                         qp->ops[session->key].update_dec(&session->gdata_key,
 320                                         &qp->gdata_ctx,
 321                                         dst, src,
 322                                         (uint64_t)part_len);
 323                         total_len -= part_len;
 324                 }
 325
 326                 qp->ops[session->key].finalize(&session->gdata_key,
 327                                 &qp->gdata_ctx,
 328                                 auth_tag,
 329                                 (uint64_t)session->digest_length);
 330         } else if (session->op == AESNI_GMAC_OP_GENERATE) {
 331                 qp->ops[session->key].init(&session->gdata_key,
 332                                 &qp->gdata_ctx,
 333                                 iv_ptr,
 334                                 src,
 335                                 (uint64_t)data_length);
 336                 qp->ops[session->key].finalize(&session->gdata_key,
 337                                 &qp->gdata_ctx,
 338                                 sym_op->auth.digest.data,
 339                                 (uint64_t)session->digest_length);
 340         } else { /* AESNI_GMAC_OP_VERIFY */
 341                 uint8_t *auth_tag = (uint8_t *)rte_pktmbuf_append(sym_op->m_dst ?
 342                                 sym_op->m_dst : sym_op->m_src,
 343                                 session->digest_length);
 344
 345                 if (!auth_tag) {
 346                         GCM_LOG_ERR("auth_tag");
 347                         return -1;
 348                 }
 349
 350                 qp->ops[session->key].init(&session->gdata_key,
 351                                 &qp->gdata_ctx,
 352                                 iv_ptr,
 353                                 src,
 354                                 (uint64_t)data_length);
 355
 356                 qp->ops[session->key].finalize(&session->gdata_key,
 357                                 &qp->gdata_ctx,
 358                                 auth_tag,
 359                                 (uint64_t)session->digest_length);
 360         }
 361
 362         return 0;
 363 }
 364
 365 /**
 366  * Process a completed job and return rte_mbuf which job processed
 367  *
 368  * @param job   JOB_AES_HMAC job to process
 369  *
 370  * @return
 371  * - Returns processed mbuf which is trimmed of output digest used in
 372  * verification of supplied digest in the case of a HASH_CIPHER operation
 373  * - Returns NULL on invalid job
 374  */
 375 static void
 376 post_process_gcm_crypto_op(struct rte_crypto_op *op)
 377 {
 378         struct rte_mbuf *m = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
 379
 380         struct aesni_gcm_session *session =
 381                 (struct aesni_gcm_session *)op->sym->session->_private;
 382
 383         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 384
 385         /* Verify digest if required */
 386         if (session->op == AESNI_GCM_OP_AUTHENTICATED_DECRYPTION ||
 387                         session->op == AESNI_GMAC_OP_VERIFY) {
 388                 uint8_t *digest;
 389
 390                 uint8_t *tag = rte_pktmbuf_mtod_offset(m, uint8_t *,
 391                                 m->data_len - session->digest_length);
 392
 393                 if (session->op == AESNI_GMAC_OP_VERIFY)
 394                         digest = op->sym->auth.digest.data;
 395                 else
 396                         digest = op->sym->aead.digest.data;
 397
 398 #ifdef RTE_LIBRTE_PMD_AESNI_GCM_DEBUG
 399                 rte_hexdump(stdout, "auth tag (orig):",
 400                                 digest, session->digest_length);
 401                 rte_hexdump(stdout, "auth tag (calc):",
 402                                 tag, session->digest_length);
 403 #endif
 404
 405                 if (memcmp(tag, digest, session->digest_length) != 0)
 406                         op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 407
 408                 /* trim area used for digest from mbuf */
 409                 rte_pktmbuf_trim(m, session->digest_length);
 410         }
 411 }
 412
 413 /**
 414  * Process a completed GCM request
 415  *
 416  * @param qp            Queue Pair to process
 417  * @param job           JOB_AES_HMAC job
 418  *
 419  * @return
 420  * - Number of processed jobs
 421  */
 422 static void
 423 handle_completed_gcm_crypto_op(struct aesni_gcm_qp *qp,
 424                 struct rte_crypto_op *op)
 425 {
 426         post_process_gcm_crypto_op(op);
 427
 428         /* Free session if a session-less crypto op */
 429         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 430                 rte_mempool_put(qp->sess_mp, op->sym->session);
 431                 op->sym->session = NULL;
 432         }
 433 }
 434
 435 static uint16_t
 436 aesni_gcm_pmd_dequeue_burst(void *queue_pair,
 437                 struct rte_crypto_op **ops, uint16_t nb_ops)
 438 {
 439         struct aesni_gcm_session *sess;
 440         struct aesni_gcm_qp *qp = queue_pair;
 441
 442         int retval = 0;
 443         unsigned int i, nb_dequeued;
 444
 445         nb_dequeued = rte_ring_dequeue_burst(qp->processed_pkts,
 446                         (void **)ops, nb_ops, NULL);
 447
 448         for (i = 0; i < nb_dequeued; i++) {
 449
 450                 sess = aesni_gcm_get_session(qp, ops[i]);
 451                 if (unlikely(sess == NULL)) {
 452                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 453                         qp->qp_stats.dequeue_err_count++;
 454                         break;
 455                 }
 456
 457                 retval = process_gcm_crypto_op(qp, ops[i], sess);
 458                 if (retval < 0) {
 459                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 460                         qp->qp_stats.dequeue_err_count++;
 461                         break;
 462                 }
 463
 464                 handle_completed_gcm_crypto_op(qp, ops[i]);
 465         }
 466
 467         qp->qp_stats.dequeued_count += i;
 468
 469         return i;
 470 }
 471
 472 static uint16_t
 473 aesni_gcm_pmd_enqueue_burst(void *queue_pair,
 474                 struct rte_crypto_op **ops, uint16_t nb_ops)
 475 {
 476         struct aesni_gcm_qp *qp = queue_pair;
 477
 478         unsigned int nb_enqueued;
 479
 480         nb_enqueued = rte_ring_enqueue_burst(qp->processed_pkts,
 481                         (void **)ops, nb_ops, NULL);
 482         qp->qp_stats.enqueued_count += nb_enqueued;
 483
 484         return nb_enqueued;
 485 }
 486
 487 static int aesni_gcm_remove(struct rte_vdev_device *vdev);
 488
 489 static int
 490 aesni_gcm_create(const char *name,
 491                 struct rte_vdev_device *vdev,
 492                 struct rte_crypto_vdev_init_params *init_params)
 493 {
 494         struct rte_cryptodev *dev;
 495         struct aesni_gcm_private *internals;
 496         enum aesni_gcm_vector_mode vector_mode;
 497
 498         if (init_params->name[0] == '\0')
 499                 snprintf(init_params->name, sizeof(init_params->name),
 500                                 "%s", name);
 501
 502         /* Check CPU for support for AES instruction set */
 503         if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
 504                 GCM_LOG_ERR("AES instructions not supported by CPU");
 505                 return -EFAULT;
 506         }
 507
 508         /* Check CPU for supported vector instruction set */
 509         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 510                 vector_mode = RTE_AESNI_GCM_AVX2;
 511         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
 512                 vector_mode = RTE_AESNI_GCM_AVX;
 513         else
 514                 vector_mode = RTE_AESNI_GCM_SSE;
 515
 516         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 517                         sizeof(struct aesni_gcm_private), init_params->socket_id,
 518                         vdev);
 519         if (dev == NULL) {
 520                 GCM_LOG_ERR("failed to create cryptodev vdev");
 521                 goto init_error;
 522         }
 523
 524         dev->dev_type = RTE_CRYPTODEV_AESNI_GCM_PMD;
 525         dev->dev_ops = rte_aesni_gcm_pmd_ops;
 526
 527         /* register rx/tx burst functions for data path */
 528         dev->dequeue_burst = aesni_gcm_pmd_dequeue_burst;
 529         dev->enqueue_burst = aesni_gcm_pmd_enqueue_burst;
 530
 531         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 532                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 533                         RTE_CRYPTODEV_FF_CPU_AESNI |
 534                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
 535
 536         switch (vector_mode) {
 537         case RTE_AESNI_GCM_SSE:
 538                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 539                 break;
 540         case RTE_AESNI_GCM_AVX:
 541                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX;
 542                 break;
 543         case RTE_AESNI_GCM_AVX2:
 544                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2;
 545                 break;
 546         default:
 547                 break;
 548         }
 549
 550         internals = dev->data->dev_private;
 551
 552         internals->vector_mode = vector_mode;
 553
 554         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 555         internals->max_nb_sessions = init_params->max_nb_sessions;
 556
 557         return 0;
 558
 559 init_error:
 560         GCM_LOG_ERR("driver %s: create failed", init_params->name);
 561
 562         aesni_gcm_remove(vdev);
 563         return -EFAULT;
 564 }
 565
 566 static int
 567 aesni_gcm_probe(struct rte_vdev_device *vdev)
 568 {
 569         struct rte_crypto_vdev_init_params init_params = {
 570                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 571                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 572                 rte_socket_id(),
 573                 {0}
 574         };
 575         const char *name;
 576         const char *input_args;
 577
 578         name = rte_vdev_device_name(vdev);
 579         if (name == NULL)
 580                 return -EINVAL;
 581         input_args = rte_vdev_device_args(vdev);
 582         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 583
 584         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 585                         init_params.socket_id);
 586         if (init_params.name[0] != '\0')
 587                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 588                         init_params.name);
 589         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 590                         init_params.max_nb_queue_pairs);
 591         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 592                         init_params.max_nb_sessions);
 593
 594         return aesni_gcm_create(name, vdev, &init_params);
 595 }
 596
 597 static int
 598 aesni_gcm_remove(struct rte_vdev_device *vdev)
 599 {
 600         const char *name;
 601
 602         name = rte_vdev_device_name(vdev);
 603         if (name == NULL)
 604                 return -EINVAL;
 605
 606         GCM_LOG_INFO("Closing AESNI crypto device %s on numa socket %u\n",
 607                         name, rte_socket_id());
 608
 609         return 0;
 610 }
 611
 612 static struct rte_vdev_driver aesni_gcm_pmd_drv = {
 613         .probe = aesni_gcm_probe,
 614         .remove = aesni_gcm_remove
 615 };
 616
 617 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_AESNI_GCM_PMD, aesni_gcm_pmd_drv);
 618 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_AESNI_GCM_PMD, cryptodev_aesni_gcm_pmd);
 619 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_AESNI_GCM_PMD,
 620         "max_nb_queue_pairs=<int> "
 621         "max_nb_sessions=<int> "
 622         "socket_id=<int>");