drivers/crypto/snow3g/rte_snow3g_pmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2018 Intel Corporation
   3  */
   4
   5 #include <rte_common.h>
   6 #include <rte_hexdump.h>
   7 #include <rte_cryptodev.h>
   8 #include <rte_cryptodev_pmd.h>
   9 #include <rte_bus_vdev.h>
  10 #include <rte_malloc.h>
  11 #include <rte_cpuflags.h>
  12
  13 #include "rte_snow3g_pmd_private.h"
  14
  15 #define SNOW3G_IV_LENGTH 16
  16 #define SNOW3G_MAX_BURST 8
  17 #define BYTE_LEN 8
  18
  19 static uint8_t cryptodev_driver_id;
  20
  21 /** Get xform chain order. */
  22 static enum snow3g_operation
  23 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  24 {
  25         if (xform == NULL)
  26                 return SNOW3G_OP_NOT_SUPPORTED;
  27
  28         if (xform->next)
  29                 if (xform->next->next != NULL)
  30                         return SNOW3G_OP_NOT_SUPPORTED;
  31
  32         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  33                 if (xform->next == NULL)
  34                         return SNOW3G_OP_ONLY_AUTH;
  35                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  36                         return SNOW3G_OP_AUTH_CIPHER;
  37                 else
  38                         return SNOW3G_OP_NOT_SUPPORTED;
  39         }
  40
  41         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  42                 if (xform->next == NULL)
  43                         return SNOW3G_OP_ONLY_CIPHER;
  44                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  45                         return SNOW3G_OP_CIPHER_AUTH;
  46                 else
  47                         return SNOW3G_OP_NOT_SUPPORTED;
  48         }
  49
  50         return SNOW3G_OP_NOT_SUPPORTED;
  51 }
  52
  53
  54 /** Parse crypto xform chain and set private session parameters. */
  55 int
  56 snow3g_set_session_parameters(struct snow3g_session *sess,
  57                 const struct rte_crypto_sym_xform *xform)
  58 {
  59         const struct rte_crypto_sym_xform *auth_xform = NULL;
  60         const struct rte_crypto_sym_xform *cipher_xform = NULL;
  61         enum snow3g_operation mode;
  62
  63         /* Select Crypto operation - hash then cipher / cipher then hash */
  64         mode = snow3g_get_mode(xform);
  65
  66         switch (mode) {
  67         case SNOW3G_OP_CIPHER_AUTH:
  68                 auth_xform = xform->next;
  69
  70                 /* Fall-through */
  71         case SNOW3G_OP_ONLY_CIPHER:
  72                 cipher_xform = xform;
  73                 break;
  74         case SNOW3G_OP_AUTH_CIPHER:
  75                 cipher_xform = xform->next;
  76                 /* Fall-through */
  77         case SNOW3G_OP_ONLY_AUTH:
  78                 auth_xform = xform;
  79                 break;
  80         case SNOW3G_OP_NOT_SUPPORTED:
  81         default:
  82                 SNOW3G_LOG(ERR, "Unsupported operation chain order parameter");
  83                 return -ENOTSUP;
  84         }
  85
  86         if (cipher_xform) {
  87                 /* Only SNOW 3G UEA2 supported */
  88                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
  89                         return -ENOTSUP;
  90
  91                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
  92                         SNOW3G_LOG(ERR, "Wrong IV length");
  93                         return -EINVAL;
  94                 }
  95                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
  96
  97                 /* Initialize key */
  98                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
  99                                 &sess->pKeySched_cipher);
 100         }
 101
 102         if (auth_xform) {
 103                 /* Only SNOW 3G UIA2 supported */
 104                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 105                         return -ENOTSUP;
 106
 107                 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
 108                         SNOW3G_LOG(ERR, "Wrong digest length");
 109                         return -EINVAL;
 110                 }
 111
 112                 sess->auth_op = auth_xform->auth.op;
 113
 114                 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
 115                         SNOW3G_LOG(ERR, "Wrong IV length");
 116                         return -EINVAL;
 117                 }
 118                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 119
 120                 /* Initialize key */
 121                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 122                                 &sess->pKeySched_hash);
 123         }
 124
 125
 126         sess->op = mode;
 127
 128         return 0;
 129 }
 130
 131 /** Get SNOW 3G session. */
 132 static struct snow3g_session *
 133 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 134 {
 135         struct snow3g_session *sess = NULL;
 136
 137         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 138                 if (likely(op->sym->session != NULL))
 139                         sess = (struct snow3g_session *)
 140                                         get_sym_session_private_data(
 141                                         op->sym->session,
 142                                         cryptodev_driver_id);
 143         } else {
 144                 void *_sess = NULL;
 145                 void *_sess_private_data = NULL;
 146
 147                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 148                         return NULL;
 149
 150                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 151                         return NULL;
 152
 153                 sess = (struct snow3g_session *)_sess_private_data;
 154
 155                 if (unlikely(snow3g_set_session_parameters(sess,
 156                                 op->sym->xform) != 0)) {
 157                         rte_mempool_put(qp->sess_mp, _sess);
 158                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 159                         sess = NULL;
 160                 }
 161                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 162                 set_sym_session_private_data(op->sym->session,
 163                                 cryptodev_driver_id, _sess_private_data);
 164         }
 165
 166         if (unlikely(sess == NULL))
 167                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 168
 169
 170         return sess;
 171 }
 172
 173 /** Encrypt/decrypt mbufs with same cipher key. */
 174 static uint8_t
 175 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 176                 struct snow3g_session *session,
 177                 uint8_t num_ops)
 178 {
 179         unsigned i;
 180         uint8_t processed_ops = 0;
 181         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 182         uint8_t *iv[SNOW3G_MAX_BURST];
 183         uint32_t num_bytes[SNOW3G_MAX_BURST];
 184
 185         for (i = 0; i < num_ops; i++) {
 186                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 187                                 (ops[i]->sym->cipher.data.offset >> 3);
 188                 dst[i] = ops[i]->sym->m_dst ?
 189                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 190                                 (ops[i]->sym->cipher.data.offset >> 3) :
 191                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 192                                 (ops[i]->sym->cipher.data.offset >> 3);
 193                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 194                                 session->cipher_iv_offset);
 195                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 196
 197                 processed_ops++;
 198         }
 199
 200         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 201                         num_bytes, processed_ops);
 202
 203         return processed_ops;
 204 }
 205
 206 /** Encrypt/decrypt mbuf (bit level function). */
 207 static uint8_t
 208 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 209                 struct snow3g_session *session)
 210 {
 211         uint8_t *src, *dst;
 212         uint8_t *iv;
 213         uint32_t length_in_bits, offset_in_bits;
 214
 215         offset_in_bits = op->sym->cipher.data.offset;
 216         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 217         if (op->sym->m_dst == NULL) {
 218                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 219                 SNOW3G_LOG(ERR, "bit-level in-place not supported\n");
 220                 return 0;
 221         }
 222         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 223         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 224                                 session->cipher_iv_offset);
 225         length_in_bits = op->sym->cipher.data.length;
 226
 227         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 228                         src, dst, length_in_bits, offset_in_bits);
 229
 230         return 1;
 231 }
 232
 233 /** Generate/verify hash from mbufs with same hash key. */
 234 static int
 235 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
 236                 struct snow3g_session *session,
 237                 uint8_t num_ops)
 238 {
 239         unsigned i;
 240         uint8_t processed_ops = 0;
 241         uint8_t *src, *dst;
 242         uint32_t length_in_bits;
 243         uint8_t *iv;
 244
 245         for (i = 0; i < num_ops; i++) {
 246                 /* Data must be byte aligned */
 247                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 248                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 249                         SNOW3G_LOG(ERR, "Offset");
 250                         break;
 251                 }
 252
 253                 length_in_bits = ops[i]->sym->auth.data.length;
 254
 255                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 256                                 (ops[i]->sym->auth.data.offset >> 3);
 257                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 258                                 session->auth_iv_offset);
 259
 260                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 261                         dst = qp->temp_digest;
 262
 263                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 264                                         iv, src,
 265                                         length_in_bits, dst);
 266                         /* Verify digest. */
 267                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 268                                         SNOW3G_DIGEST_LENGTH) != 0)
 269                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 270                 } else  {
 271                         dst = ops[i]->sym->auth.digest.data;
 272
 273                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 274                                         iv, src,
 275                                         length_in_bits, dst);
 276                 }
 277                 processed_ops++;
 278         }
 279
 280         return processed_ops;
 281 }
 282
 283 /** Process a batch of crypto ops which shares the same session. */
 284 static int
 285 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 286                 struct snow3g_qp *qp, uint8_t num_ops,
 287                 uint16_t *accumulated_enqueued_ops)
 288 {
 289         unsigned i;
 290         unsigned enqueued_ops, processed_ops;
 291
 292 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 293         for (i = 0; i < num_ops; i++) {
 294                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 295                                 (ops[i]->sym->m_dst != NULL &&
 296                                 !rte_pktmbuf_is_contiguous(
 297                                                 ops[i]->sym->m_dst))) {
 298                         SNOW3G_LOG(ERR, "PMD supports only contiguous mbufs, "
 299                                 "op (%p) provides noncontiguous mbuf as "
 300                                 "source/destination buffer.\n", ops[i]);
 301                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 302                         return 0;
 303                 }
 304         }
 305 #endif
 306
 307         switch (session->op) {
 308         case SNOW3G_OP_ONLY_CIPHER:
 309                 processed_ops = process_snow3g_cipher_op(ops,
 310                                 session, num_ops);
 311                 break;
 312         case SNOW3G_OP_ONLY_AUTH:
 313                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 314                                 num_ops);
 315                 break;
 316         case SNOW3G_OP_CIPHER_AUTH:
 317                 processed_ops = process_snow3g_cipher_op(ops, session,
 318                                 num_ops);
 319                 process_snow3g_hash_op(qp, ops, session, processed_ops);
 320                 break;
 321         case SNOW3G_OP_AUTH_CIPHER:
 322                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 323                                 num_ops);
 324                 process_snow3g_cipher_op(ops, session, processed_ops);
 325                 break;
 326         default:
 327                 /* Operation not supported. */
 328                 processed_ops = 0;
 329         }
 330
 331         for (i = 0; i < num_ops; i++) {
 332                 /*
 333                  * If there was no error/authentication failure,
 334                  * change status to successful.
 335                  */
 336                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 337                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 338                 /* Free session if a session-less crypto op. */
 339                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 340                         memset(session, 0, sizeof(struct snow3g_session));
 341                         memset(ops[i]->sym->session, 0,
 342                                         rte_cryptodev_sym_get_header_session_size());
 343                         rte_mempool_put(qp->sess_mp, session);
 344                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 345                         ops[i]->sym->session = NULL;
 346                 }
 347         }
 348
 349         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 350                         (void **)ops, processed_ops, NULL);
 351         qp->qp_stats.enqueued_count += enqueued_ops;
 352         *accumulated_enqueued_ops += enqueued_ops;
 353
 354         return enqueued_ops;
 355 }
 356
 357 /** Process a crypto op with length/offset in bits. */
 358 static int
 359 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 360                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 361 {
 362         unsigned enqueued_op, processed_op;
 363
 364         switch (session->op) {
 365         case SNOW3G_OP_ONLY_CIPHER:
 366                 processed_op = process_snow3g_cipher_op_bit(op,
 367                                 session);
 368                 break;
 369         case SNOW3G_OP_ONLY_AUTH:
 370                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 371                 break;
 372         case SNOW3G_OP_CIPHER_AUTH:
 373                 processed_op = process_snow3g_cipher_op_bit(op, session);
 374                 if (processed_op == 1)
 375                         process_snow3g_hash_op(qp, &op, session, 1);
 376                 break;
 377         case SNOW3G_OP_AUTH_CIPHER:
 378                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 379                 if (processed_op == 1)
 380                         process_snow3g_cipher_op_bit(op, session);
 381                 break;
 382         default:
 383                 /* Operation not supported. */
 384                 processed_op = 0;
 385         }
 386
 387         /*
 388          * If there was no error/authentication failure,
 389          * change status to successful.
 390          */
 391         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 392                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 393
 394         /* Free session if a session-less crypto op. */
 395         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 396                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 397                 rte_cryptodev_sym_session_free(op->sym->session);
 398                 op->sym->session = NULL;
 399         }
 400
 401         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 402                         (void **)&op, processed_op, NULL);
 403         qp->qp_stats.enqueued_count += enqueued_op;
 404         *accumulated_enqueued_ops += enqueued_op;
 405
 406         return enqueued_op;
 407 }
 408
 409 static uint16_t
 410 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 411                 uint16_t nb_ops)
 412 {
 413         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 414         struct rte_crypto_op *curr_c_op;
 415
 416         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 417         struct snow3g_qp *qp = queue_pair;
 418         unsigned i;
 419         uint8_t burst_size = 0;
 420         uint16_t enqueued_ops = 0;
 421         uint8_t processed_ops;
 422
 423         for (i = 0; i < nb_ops; i++) {
 424                 curr_c_op = ops[i];
 425
 426                 /* Set status as enqueued (not processed yet) by default. */
 427                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 428
 429                 curr_sess = snow3g_get_session(qp, curr_c_op);
 430                 if (unlikely(curr_sess == NULL ||
 431                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 432                         curr_c_op->status =
 433                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 434                         break;
 435                 }
 436
 437                 /* If length/offset is at bit-level, process this buffer alone. */
 438                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 439                                 || ((curr_c_op->sym->cipher.data.offset
 440                                         % BYTE_LEN) != 0)) {
 441                         /* Process the ops of the previous session. */
 442                         if (prev_sess != NULL) {
 443                                 processed_ops = process_ops(c_ops, prev_sess,
 444                                 qp, burst_size, &enqueued_ops);
 445                                 if (processed_ops < burst_size) {
 446                                         burst_size = 0;
 447                                         break;
 448                                 }
 449
 450                                 burst_size = 0;
 451                                 prev_sess = NULL;
 452                         }
 453
 454                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 455                                                         qp, &enqueued_ops);
 456                         if (processed_ops != 1)
 457                                 break;
 458
 459                         continue;
 460                 }
 461
 462                 /* Batch ops that share the same session. */
 463                 if (prev_sess == NULL) {
 464                         prev_sess = curr_sess;
 465                         c_ops[burst_size++] = curr_c_op;
 466                 } else if (curr_sess == prev_sess) {
 467                         c_ops[burst_size++] = curr_c_op;
 468                         /*
 469                          * When there are enough ops to process in a batch,
 470                          * process them, and start a new batch.
 471                          */
 472                         if (burst_size == SNOW3G_MAX_BURST) {
 473                                 processed_ops = process_ops(c_ops, prev_sess,
 474                                                 qp, burst_size, &enqueued_ops);
 475                                 if (processed_ops < burst_size) {
 476                                         burst_size = 0;
 477                                         break;
 478                                 }
 479
 480                                 burst_size = 0;
 481                                 prev_sess = NULL;
 482                         }
 483                 } else {
 484                         /*
 485                          * Different session, process the ops
 486                          * of the previous session.
 487                          */
 488                         processed_ops = process_ops(c_ops, prev_sess,
 489                                         qp, burst_size, &enqueued_ops);
 490                         if (processed_ops < burst_size) {
 491                                 burst_size = 0;
 492                                 break;
 493                         }
 494
 495                         burst_size = 0;
 496                         prev_sess = curr_sess;
 497
 498                         c_ops[burst_size++] = curr_c_op;
 499                 }
 500         }
 501
 502         if (burst_size != 0) {
 503                 /* Process the crypto ops of the last session. */
 504                 processed_ops = process_ops(c_ops, prev_sess,
 505                                 qp, burst_size, &enqueued_ops);
 506         }
 507
 508         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 509         return enqueued_ops;
 510 }
 511
 512 static uint16_t
 513 snow3g_pmd_dequeue_burst(void *queue_pair,
 514                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 515 {
 516         struct snow3g_qp *qp = queue_pair;
 517
 518         unsigned nb_dequeued;
 519
 520         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 521                         (void **)c_ops, nb_ops, NULL);
 522         qp->qp_stats.dequeued_count += nb_dequeued;
 523
 524         return nb_dequeued;
 525 }
 526
 527 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 528
 529 static int
 530 cryptodev_snow3g_create(const char *name,
 531                         struct rte_vdev_device *vdev,
 532                         struct rte_cryptodev_pmd_init_params *init_params)
 533 {
 534         struct rte_cryptodev *dev;
 535         struct snow3g_private *internals;
 536         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 537
 538         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
 539         if (dev == NULL) {
 540                 SNOW3G_LOG(ERR, "failed to create cryptodev vdev");
 541                 goto init_error;
 542         }
 543
 544         dev->driver_id = cryptodev_driver_id;
 545         dev->dev_ops = rte_snow3g_pmd_ops;
 546
 547         /* Register RX/TX burst functions for data path. */
 548         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 549         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 550
 551         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 552                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 553                         cpu_flags;
 554
 555         internals = dev->data->dev_private;
 556
 557         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 558
 559         return 0;
 560 init_error:
 561         SNOW3G_LOG(ERR, "driver %s: cryptodev_snow3g_create failed",
 562                         init_params->name);
 563
 564         cryptodev_snow3g_remove(vdev);
 565         return -EFAULT;
 566 }
 567
 568 static int
 569 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 570 {
 571         struct rte_cryptodev_pmd_init_params init_params = {
 572                 "",
 573                 sizeof(struct snow3g_private),
 574                 rte_socket_id(),
 575                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS
 576         };
 577         const char *name;
 578         const char *input_args;
 579
 580         name = rte_vdev_device_name(vdev);
 581         if (name == NULL)
 582                 return -EINVAL;
 583         input_args = rte_vdev_device_args(vdev);
 584
 585         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 586
 587         return cryptodev_snow3g_create(name, vdev, &init_params);
 588 }
 589
 590 static int
 591 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 592 {
 593         struct rte_cryptodev *cryptodev;
 594         const char *name;
 595
 596         name = rte_vdev_device_name(vdev);
 597         if (name == NULL)
 598                 return -EINVAL;
 599
 600         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
 601         if (cryptodev == NULL)
 602                 return -ENODEV;
 603
 604         return rte_cryptodev_pmd_destroy(cryptodev);
 605 }
 606
 607 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 608         .probe = cryptodev_snow3g_probe,
 609         .remove = cryptodev_snow3g_remove
 610 };
 611
 612 static struct cryptodev_driver snow3g_crypto_drv;
 613
 614 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 615 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 616 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 617         "max_nb_queue_pairs=<int> "
 618         "socket_id=<int>");
 619 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv,
 620                 cryptodev_snow3g_pmd_drv.driver, cryptodev_driver_id);
 621
 622 RTE_INIT(snow3g_init_log)
 623 {
 624         snow3g_logtype_driver = rte_log_register("pmd.crypto.snow3g");
 625 }