drivers/crypto/zuc/rte_zuc_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
  43 #include "rte_zuc_pmd_private.h"
  44
  45 #define ZUC_MAX_BURST 8
  46 #define BYTE_LEN 8
  47
  48 static uint8_t cryptodev_driver_id;
  49
  50 /** Get xform chain order. */
  51 static enum zuc_operation
  52 zuc_get_mode(const struct rte_crypto_sym_xform *xform)
  53 {
  54         if (xform == NULL)
  55                 return ZUC_OP_NOT_SUPPORTED;
  56
  57         if (xform->next)
  58                 if (xform->next->next != NULL)
  59                         return ZUC_OP_NOT_SUPPORTED;
  60
  61         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  62                 if (xform->next == NULL)
  63                         return ZUC_OP_ONLY_AUTH;
  64                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  65                         return ZUC_OP_AUTH_CIPHER;
  66                 else
  67                         return ZUC_OP_NOT_SUPPORTED;
  68         }
  69
  70         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  71                 if (xform->next == NULL)
  72                         return ZUC_OP_ONLY_CIPHER;
  73                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  74                         return ZUC_OP_CIPHER_AUTH;
  75                 else
  76                         return ZUC_OP_NOT_SUPPORTED;
  77         }
  78
  79         return ZUC_OP_NOT_SUPPORTED;
  80 }
  81
  82
  83 /** Parse crypto xform chain and set private session parameters. */
  84 int
  85 zuc_set_session_parameters(struct zuc_session *sess,
  86                 const struct rte_crypto_sym_xform *xform)
  87 {
  88         const struct rte_crypto_sym_xform *auth_xform = NULL;
  89         const struct rte_crypto_sym_xform *cipher_xform = NULL;
  90         enum zuc_operation mode;
  91
  92         /* Select Crypto operation - hash then cipher / cipher then hash */
  93         mode = zuc_get_mode(xform);
  94
  95         switch (mode) {
  96         case ZUC_OP_CIPHER_AUTH:
  97                 auth_xform = xform->next;
  98
  99                 /* Fall-through */
 100         case ZUC_OP_ONLY_CIPHER:
 101                 cipher_xform = xform;
 102                 break;
 103         case ZUC_OP_AUTH_CIPHER:
 104                 cipher_xform = xform->next;
 105                 /* Fall-through */
 106         case ZUC_OP_ONLY_AUTH:
 107                 auth_xform = xform;
 108                 break;
 109         case ZUC_OP_NOT_SUPPORTED:
 110         default:
 111                 ZUC_LOG_ERR("Unsupported operation chain order parameter");
 112                 return -ENOTSUP;
 113         }
 114
 115         if (cipher_xform) {
 116                 /* Only ZUC EEA3 supported */
 117                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_ZUC_EEA3)
 118                         return -ENOTSUP;
 119
 120                 if (cipher_xform->cipher.iv.length != ZUC_IV_KEY_LENGTH) {
 121                         ZUC_LOG_ERR("Wrong IV length");
 122                         return -EINVAL;
 123                 }
 124                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 125
 126                 /* Copy the key */
 127                 memcpy(sess->pKey_cipher, cipher_xform->cipher.key.data,
 128                                 ZUC_IV_KEY_LENGTH);
 129         }
 130
 131         if (auth_xform) {
 132                 /* Only ZUC EIA3 supported */
 133                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_ZUC_EIA3)
 134                         return -ENOTSUP;
 135
 136                 if (auth_xform->auth.digest_length != ZUC_DIGEST_LENGTH) {
 137                         ZUC_LOG_ERR("Wrong digest length");
 138                         return -EINVAL;
 139                 }
 140
 141                 sess->auth_op = auth_xform->auth.op;
 142
 143                 if (auth_xform->auth.iv.length != ZUC_IV_KEY_LENGTH) {
 144                         ZUC_LOG_ERR("Wrong IV length");
 145                         return -EINVAL;
 146                 }
 147                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 148
 149                 /* Copy the key */
 150                 memcpy(sess->pKey_hash, auth_xform->auth.key.data,
 151                                 ZUC_IV_KEY_LENGTH);
 152         }
 153
 154
 155         sess->op = mode;
 156
 157         return 0;
 158 }
 159
 160 /** Get ZUC session. */
 161 static struct zuc_session *
 162 zuc_get_session(struct zuc_qp *qp, struct rte_crypto_op *op)
 163 {
 164         struct zuc_session *sess = NULL;
 165
 166         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 167                 if (likely(op->sym->session != NULL))
 168                         sess = (struct zuc_session *)get_session_private_data(
 169                                         op->sym->session,
 170                                         cryptodev_driver_id);
 171         } else {
 172                 void *_sess = NULL;
 173                 void *_sess_private_data = NULL;
 174
 175                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 176                         return NULL;
 177
 178                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 179                         return NULL;
 180
 181                 sess = (struct zuc_session *)_sess_private_data;
 182
 183                 if (unlikely(zuc_set_session_parameters(sess,
 184                                 op->sym->xform) != 0)) {
 185                         rte_mempool_put(qp->sess_mp, _sess);
 186                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 187                         sess = NULL;
 188                 }
 189                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 190                 set_session_private_data(op->sym->session, cryptodev_driver_id,
 191                         _sess_private_data);
 192         }
 193
 194         if (unlikely(sess == NULL))
 195                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 196
 197
 198         return sess;
 199 }
 200
 201 /** Encrypt/decrypt mbufs with same cipher key. */
 202 static uint8_t
 203 process_zuc_cipher_op(struct rte_crypto_op **ops,
 204                 struct zuc_session *session,
 205                 uint8_t num_ops)
 206 {
 207         unsigned i;
 208         uint8_t processed_ops = 0;
 209         uint8_t *src[ZUC_MAX_BURST], *dst[ZUC_MAX_BURST];
 210         uint8_t *iv[ZUC_MAX_BURST];
 211         uint32_t num_bytes[ZUC_MAX_BURST];
 212         uint8_t *cipher_keys[ZUC_MAX_BURST];
 213
 214         for (i = 0; i < num_ops; i++) {
 215                 if (((ops[i]->sym->cipher.data.length % BYTE_LEN) != 0)
 216                                 || ((ops[i]->sym->cipher.data.offset
 217                                         % BYTE_LEN) != 0)) {
 218                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 219                         ZUC_LOG_ERR("Data Length or offset");
 220                         break;
 221                 }
 222
 223 #ifdef RTE_LIBRTE_PMD_ZUC_DEBUG
 224                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 225                                 (ops[i]->sym->m_dst != NULL &&
 226                                 !rte_pktmbuf_is_contiguous(
 227                                                 ops[i]->sym->m_dst))) {
 228                         ZUC_LOG_ERR("PMD supports only contiguous mbufs, "
 229                                 "op (%p) provides noncontiguous mbuf as "
 230                                 "source/destination buffer.\n", ops[i]);
 231                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 232                         break;
 233                 }
 234 #endif
 235
 236                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 237                                 (ops[i]->sym->cipher.data.offset >> 3);
 238                 dst[i] = ops[i]->sym->m_dst ?
 239                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 240                                 (ops[i]->sym->cipher.data.offset >> 3) :
 241                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 242                                 (ops[i]->sym->cipher.data.offset >> 3);
 243                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 244                                 session->cipher_iv_offset);
 245                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 246
 247                 cipher_keys[i] = session->pKey_cipher;
 248
 249                 processed_ops++;
 250         }
 251
 252         sso_zuc_eea3_n_buffer(cipher_keys, iv, src, dst,
 253                         num_bytes, processed_ops);
 254
 255         return processed_ops;
 256 }
 257
 258 /** Generate/verify hash from mbufs with same hash key. */
 259 static int
 260 process_zuc_hash_op(struct zuc_qp *qp, struct rte_crypto_op **ops,
 261                 struct zuc_session *session,
 262                 uint8_t num_ops)
 263 {
 264         unsigned i;
 265         uint8_t processed_ops = 0;
 266         uint8_t *src;
 267         uint32_t *dst;
 268         uint32_t length_in_bits;
 269         uint8_t *iv;
 270
 271         for (i = 0; i < num_ops; i++) {
 272                 /* Data must be byte aligned */
 273                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 274                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 275                         ZUC_LOG_ERR("Offset");
 276                         break;
 277                 }
 278
 279                 length_in_bits = ops[i]->sym->auth.data.length;
 280
 281                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 282                                 (ops[i]->sym->auth.data.offset >> 3);
 283                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 284                                 session->auth_iv_offset);
 285
 286                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 287                         dst = (uint32_t *)qp->temp_digest;
 288
 289                         sso_zuc_eia3_1_buffer(session->pKey_hash,
 290                                         iv, src,
 291                                         length_in_bits, dst);
 292                         /* Verify digest. */
 293                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 294                                         ZUC_DIGEST_LENGTH) != 0)
 295                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 296                 } else  {
 297                         dst = (uint32_t *)ops[i]->sym->auth.digest.data;
 298
 299                         sso_zuc_eia3_1_buffer(session->pKey_hash,
 300                                         iv, src,
 301                                         length_in_bits, dst);
 302                 }
 303                 processed_ops++;
 304         }
 305
 306         return processed_ops;
 307 }
 308
 309 /** Process a batch of crypto ops which shares the same session. */
 310 static int
 311 process_ops(struct rte_crypto_op **ops, struct zuc_session *session,
 312                 struct zuc_qp *qp, uint8_t num_ops,
 313                 uint16_t *accumulated_enqueued_ops)
 314 {
 315         unsigned i;
 316         unsigned enqueued_ops, processed_ops;
 317
 318         switch (session->op) {
 319         case ZUC_OP_ONLY_CIPHER:
 320                 processed_ops = process_zuc_cipher_op(ops,
 321                                 session, num_ops);
 322                 break;
 323         case ZUC_OP_ONLY_AUTH:
 324                 processed_ops = process_zuc_hash_op(qp, ops, session,
 325                                 num_ops);
 326                 break;
 327         case ZUC_OP_CIPHER_AUTH:
 328                 processed_ops = process_zuc_cipher_op(ops, session,
 329                                 num_ops);
 330                 process_zuc_hash_op(qp, ops, session, processed_ops);
 331                 break;
 332         case ZUC_OP_AUTH_CIPHER:
 333                 processed_ops = process_zuc_hash_op(qp, ops, session,
 334                                 num_ops);
 335                 process_zuc_cipher_op(ops, session, processed_ops);
 336                 break;
 337         default:
 338                 /* Operation not supported. */
 339                 processed_ops = 0;
 340         }
 341
 342         for (i = 0; i < num_ops; i++) {
 343                 /*
 344                  * If there was no error/authentication failure,
 345                  * change status to successful.
 346                  */
 347                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 348                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 349                 /* Free session if a session-less crypto op. */
 350                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 351                         memset(session, 0, sizeof(struct zuc_session));
 352                         memset(ops[i]->sym->session, 0,
 353                                         rte_cryptodev_get_header_session_size());
 354                         rte_mempool_put(qp->sess_mp, session);
 355                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 356                         ops[i]->sym->session = NULL;
 357                 }
 358         }
 359
 360         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 361                         (void **)ops, processed_ops, NULL);
 362         qp->qp_stats.enqueued_count += enqueued_ops;
 363         *accumulated_enqueued_ops += enqueued_ops;
 364
 365         return enqueued_ops;
 366 }
 367
 368 static uint16_t
 369 zuc_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 370                 uint16_t nb_ops)
 371 {
 372         struct rte_crypto_op *c_ops[ZUC_MAX_BURST];
 373         struct rte_crypto_op *curr_c_op;
 374
 375         struct zuc_session *prev_sess = NULL, *curr_sess = NULL;
 376         struct zuc_qp *qp = queue_pair;
 377         unsigned i;
 378         uint8_t burst_size = 0;
 379         uint16_t enqueued_ops = 0;
 380         uint8_t processed_ops;
 381
 382         for (i = 0; i < nb_ops; i++) {
 383                 curr_c_op = ops[i];
 384
 385                 /* Set status as enqueued (not processed yet) by default. */
 386                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 387
 388                 curr_sess = zuc_get_session(qp, curr_c_op);
 389                 if (unlikely(curr_sess == NULL ||
 390                                 curr_sess->op == ZUC_OP_NOT_SUPPORTED)) {
 391                         curr_c_op->status =
 392                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 393                         break;
 394                 }
 395
 396                 /* Batch ops that share the same session. */
 397                 if (prev_sess == NULL) {
 398                         prev_sess = curr_sess;
 399                         c_ops[burst_size++] = curr_c_op;
 400                 } else if (curr_sess == prev_sess) {
 401                         c_ops[burst_size++] = curr_c_op;
 402                         /*
 403                          * When there are enough ops to process in a batch,
 404                          * process them, and start a new batch.
 405                          */
 406                         if (burst_size == ZUC_MAX_BURST) {
 407                                 processed_ops = process_ops(c_ops, prev_sess,
 408                                                 qp, burst_size, &enqueued_ops);
 409                                 if (processed_ops < burst_size) {
 410                                         burst_size = 0;
 411                                         break;
 412                                 }
 413
 414                                 burst_size = 0;
 415                                 prev_sess = NULL;
 416                         }
 417                 } else {
 418                         /*
 419                          * Different session, process the ops
 420                          * of the previous session.
 421                          */
 422                         processed_ops = process_ops(c_ops, prev_sess,
 423                                         qp, burst_size, &enqueued_ops);
 424                         if (processed_ops < burst_size) {
 425                                 burst_size = 0;
 426                                 break;
 427                         }
 428
 429                         burst_size = 0;
 430                         prev_sess = curr_sess;
 431
 432                         c_ops[burst_size++] = curr_c_op;
 433                 }
 434         }
 435
 436         if (burst_size != 0) {
 437                 /* Process the crypto ops of the last session. */
 438                 processed_ops = process_ops(c_ops, prev_sess,
 439                                 qp, burst_size, &enqueued_ops);
 440         }
 441
 442         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 443         return enqueued_ops;
 444 }
 445
 446 static uint16_t
 447 zuc_pmd_dequeue_burst(void *queue_pair,
 448                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 449 {
 450         struct zuc_qp *qp = queue_pair;
 451
 452         unsigned nb_dequeued;
 453
 454         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 455                         (void **)c_ops, nb_ops, NULL);
 456         qp->qp_stats.dequeued_count += nb_dequeued;
 457
 458         return nb_dequeued;
 459 }
 460
 461 static int cryptodev_zuc_remove(struct rte_vdev_device *vdev);
 462
 463 static int
 464 cryptodev_zuc_create(const char *name,
 465                 struct rte_vdev_device *vdev,
 466                 struct rte_crypto_vdev_init_params *init_params)
 467 {
 468         struct rte_cryptodev *dev;
 469         struct zuc_private *internals;
 470         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 471
 472         if (init_params->name[0] == '\0')
 473                 snprintf(init_params->name, sizeof(init_params->name),
 474                                 "%s", name);
 475
 476         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 477                         sizeof(struct zuc_private), init_params->socket_id,
 478                         vdev);
 479         if (dev == NULL) {
 480                 ZUC_LOG_ERR("failed to create cryptodev vdev");
 481                 goto init_error;
 482         }
 483
 484         dev->driver_id = cryptodev_driver_id;
 485         dev->dev_ops = rte_zuc_pmd_ops;
 486
 487         /* Register RX/TX burst functions for data path. */
 488         dev->dequeue_burst = zuc_pmd_dequeue_burst;
 489         dev->enqueue_burst = zuc_pmd_enqueue_burst;
 490
 491         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 492                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 493                         cpu_flags;
 494
 495         internals = dev->data->dev_private;
 496
 497         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 498         internals->max_nb_sessions = init_params->max_nb_sessions;
 499
 500         return 0;
 501 init_error:
 502         ZUC_LOG_ERR("driver %s: cryptodev_zuc_create failed",
 503                         init_params->name);
 504
 505         cryptodev_zuc_remove(vdev);
 506         return -EFAULT;
 507 }
 508
 509 static int
 510 cryptodev_zuc_probe(struct rte_vdev_device *vdev)
 511 {
 512         struct rte_crypto_vdev_init_params init_params = {
 513                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 514                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 515                 rte_socket_id(),
 516                 {0}
 517         };
 518         const char *name;
 519         const char *input_args;
 520
 521         name = rte_vdev_device_name(vdev);
 522         if (name == NULL)
 523                 return -EINVAL;
 524         input_args = rte_vdev_device_args(vdev);
 525
 526         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 527
 528         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 529                         init_params.socket_id);
 530         if (init_params.name[0] != '\0')
 531                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 532                         init_params.name);
 533         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 534                         init_params.max_nb_queue_pairs);
 535         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 536                         init_params.max_nb_sessions);
 537
 538         return cryptodev_zuc_create(name, vdev, &init_params);
 539 }
 540
 541 static int
 542 cryptodev_zuc_remove(struct rte_vdev_device *vdev)
 543 {
 544         const char *name;
 545
 546         name = rte_vdev_device_name(vdev);
 547         if (name == NULL)
 548                 return -EINVAL;
 549
 550         RTE_LOG(INFO, PMD, "Closing ZUC crypto device %s"
 551                         " on numa socket %u\n",
 552                         name, rte_socket_id());
 553
 554         return 0;
 555 }
 556
 557 static struct rte_vdev_driver cryptodev_zuc_pmd_drv = {
 558         .probe = cryptodev_zuc_probe,
 559         .remove = cryptodev_zuc_remove
 560 };
 561
 562 static struct cryptodev_driver zuc_crypto_drv;
 563
 564 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_ZUC_PMD, cryptodev_zuc_pmd_drv);
 565 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_ZUC_PMD,
 566         "max_nb_queue_pairs=<int> "
 567         "max_nb_sessions=<int> "
 568         "socket_id=<int>");
 569 RTE_PMD_REGISTER_CRYPTO_DRIVER(zuc_crypto_drv, cryptodev_zuc_pmd_drv,
 570                 cryptodev_driver_id);