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_priv,
 151                                 (void **)&_sess_private_data))
 152                         return NULL;
 153
 154                 sess = (struct snow3g_session *)_sess_private_data;
 155
 156                 if (unlikely(snow3g_set_session_parameters(sess,
 157                                 op->sym->xform) != 0)) {
 158                         rte_mempool_put(qp->sess_mp, _sess);
 159                         rte_mempool_put(qp->sess_mp_priv, _sess_private_data);
 160                         sess = NULL;
 161                 }
 162                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 163                 set_sym_session_private_data(op->sym->session,
 164                                 cryptodev_driver_id, _sess_private_data);
 165         }
 166
 167         if (unlikely(sess == NULL))
 168                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 169
 170
 171         return sess;
 172 }
 173
 174 /** Encrypt/decrypt mbufs with same cipher key. */
 175 static uint8_t
 176 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 177                 struct snow3g_session *session,
 178                 uint8_t num_ops)
 179 {
 180         unsigned i;
 181         uint8_t processed_ops = 0;
 182         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 183         uint8_t *iv[SNOW3G_MAX_BURST];
 184         uint32_t num_bytes[SNOW3G_MAX_BURST];
 185
 186         for (i = 0; i < num_ops; i++) {
 187                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 188                                 (ops[i]->sym->cipher.data.offset >> 3);
 189                 dst[i] = ops[i]->sym->m_dst ?
 190                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 191                                 (ops[i]->sym->cipher.data.offset >> 3) :
 192                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 193                                 (ops[i]->sym->cipher.data.offset >> 3);
 194                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 195                                 session->cipher_iv_offset);
 196                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 197
 198                 processed_ops++;
 199         }
 200
 201         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 202                         num_bytes, processed_ops);
 203
 204         return processed_ops;
 205 }
 206
 207 /** Encrypt/decrypt mbuf (bit level function). */
 208 static uint8_t
 209 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 210                 struct snow3g_session *session)
 211 {
 212         uint8_t *src, *dst;
 213         uint8_t *iv;
 214         uint32_t length_in_bits, offset_in_bits;
 215
 216         offset_in_bits = op->sym->cipher.data.offset;
 217         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 218         if (op->sym->m_dst == NULL) {
 219                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 220                 SNOW3G_LOG(ERR, "bit-level in-place not supported\n");
 221                 return 0;
 222         }
 223         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 224         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 225                                 session->cipher_iv_offset);
 226         length_in_bits = op->sym->cipher.data.length;
 227
 228         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 229                         src, dst, length_in_bits, offset_in_bits);
 230
 231         return 1;
 232 }
 233
 234 /** Generate/verify hash from mbufs with same hash key. */
 235 static int
 236 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
 237                 struct snow3g_session *session,
 238                 uint8_t num_ops)
 239 {
 240         unsigned i;
 241         uint8_t processed_ops = 0;
 242         uint8_t *src, *dst;
 243         uint32_t length_in_bits;
 244         uint8_t *iv;
 245
 246         for (i = 0; i < num_ops; i++) {
 247                 /* Data must be byte aligned */
 248                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 249                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 250                         SNOW3G_LOG(ERR, "Offset");
 251                         break;
 252                 }
 253
 254                 length_in_bits = ops[i]->sym->auth.data.length;
 255
 256                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 257                                 (ops[i]->sym->auth.data.offset >> 3);
 258                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 259                                 session->auth_iv_offset);
 260
 261                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 262                         dst = qp->temp_digest;
 263
 264                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 265                                         iv, src,
 266                                         length_in_bits, dst);
 267                         /* Verify digest. */
 268                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 269                                         SNOW3G_DIGEST_LENGTH) != 0)
 270                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 271                 } else  {
 272                         dst = ops[i]->sym->auth.digest.data;
 273
 274                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 275                                         iv, src,
 276                                         length_in_bits, dst);
 277                 }
 278                 processed_ops++;
 279         }
 280
 281         return processed_ops;
 282 }
 283
 284 /** Process a batch of crypto ops which shares the same session. */
 285 static int
 286 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 287                 struct snow3g_qp *qp, uint8_t num_ops,
 288                 uint16_t *accumulated_enqueued_ops)
 289 {
 290         unsigned i;
 291         unsigned enqueued_ops, processed_ops;
 292
 293 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 294         for (i = 0; i < num_ops; i++) {
 295                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 296                                 (ops[i]->sym->m_dst != NULL &&
 297                                 !rte_pktmbuf_is_contiguous(
 298                                                 ops[i]->sym->m_dst))) {
 299                         SNOW3G_LOG(ERR, "PMD supports only contiguous mbufs, "
 300                                 "op (%p) provides noncontiguous mbuf as "
 301                                 "source/destination buffer.\n", ops[i]);
 302                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 303                         return 0;
 304                 }
 305         }
 306 #endif
 307
 308         switch (session->op) {
 309         case SNOW3G_OP_ONLY_CIPHER:
 310                 processed_ops = process_snow3g_cipher_op(ops,
 311                                 session, num_ops);
 312                 break;
 313         case SNOW3G_OP_ONLY_AUTH:
 314                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 315                                 num_ops);
 316                 break;
 317         case SNOW3G_OP_CIPHER_AUTH:
 318                 processed_ops = process_snow3g_cipher_op(ops, session,
 319                                 num_ops);
 320                 process_snow3g_hash_op(qp, ops, session, processed_ops);
 321                 break;
 322         case SNOW3G_OP_AUTH_CIPHER:
 323                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 324                                 num_ops);
 325                 process_snow3g_cipher_op(ops, session, processed_ops);
 326                 break;
 327         default:
 328                 /* Operation not supported. */
 329                 processed_ops = 0;
 330         }
 331
 332         for (i = 0; i < num_ops; i++) {
 333                 /*
 334                  * If there was no error/authentication failure,
 335                  * change status to successful.
 336                  */
 337                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 338                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 339                 /* Free session if a session-less crypto op. */
 340                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 341                         memset(session, 0, sizeof(struct snow3g_session));
 342                         memset(ops[i]->sym->session, 0,
 343                         rte_cryptodev_sym_get_existing_header_session_size(
 344                                         ops[i]->sym->session));
 345                         rte_mempool_put(qp->sess_mp_priv, session);
 346                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 347                         ops[i]->sym->session = NULL;
 348                 }
 349         }
 350
 351         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 352                         (void **)ops, processed_ops, NULL);
 353         qp->qp_stats.enqueued_count += enqueued_ops;
 354         *accumulated_enqueued_ops += enqueued_ops;
 355
 356         return enqueued_ops;
 357 }
 358
 359 /** Process a crypto op with length/offset in bits. */
 360 static int
 361 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 362                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 363 {
 364         unsigned enqueued_op, processed_op;
 365
 366         switch (session->op) {
 367         case SNOW3G_OP_ONLY_CIPHER:
 368                 processed_op = process_snow3g_cipher_op_bit(op,
 369                                 session);
 370                 break;
 371         case SNOW3G_OP_ONLY_AUTH:
 372                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 373                 break;
 374         case SNOW3G_OP_CIPHER_AUTH:
 375                 processed_op = process_snow3g_cipher_op_bit(op, session);
 376                 if (processed_op == 1)
 377                         process_snow3g_hash_op(qp, &op, session, 1);
 378                 break;
 379         case SNOW3G_OP_AUTH_CIPHER:
 380                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 381                 if (processed_op == 1)
 382                         process_snow3g_cipher_op_bit(op, session);
 383                 break;
 384         default:
 385                 /* Operation not supported. */
 386                 processed_op = 0;
 387         }
 388
 389         /*
 390          * If there was no error/authentication failure,
 391          * change status to successful.
 392          */
 393         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 394                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 395
 396         /* Free session if a session-less crypto op. */
 397         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 398                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 399                 rte_cryptodev_sym_session_free(op->sym->session);
 400                 op->sym->session = NULL;
 401         }
 402
 403         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 404                         (void **)&op, processed_op, NULL);
 405         qp->qp_stats.enqueued_count += enqueued_op;
 406         *accumulated_enqueued_ops += enqueued_op;
 407
 408         return enqueued_op;
 409 }
 410
 411 static uint16_t
 412 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 413                 uint16_t nb_ops)
 414 {
 415         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 416         struct rte_crypto_op *curr_c_op;
 417
 418         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 419         struct snow3g_qp *qp = queue_pair;
 420         unsigned i;
 421         uint8_t burst_size = 0;
 422         uint16_t enqueued_ops = 0;
 423         uint8_t processed_ops;
 424
 425         for (i = 0; i < nb_ops; i++) {
 426                 curr_c_op = ops[i];
 427
 428                 /* Set status as enqueued (not processed yet) by default. */
 429                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 430
 431                 curr_sess = snow3g_get_session(qp, curr_c_op);
 432                 if (unlikely(curr_sess == NULL ||
 433                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 434                         curr_c_op->status =
 435                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 436                         break;
 437                 }
 438
 439                 /* If length/offset is at bit-level, process this buffer alone. */
 440                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 441                                 || ((curr_c_op->sym->cipher.data.offset
 442                                         % BYTE_LEN) != 0)) {
 443                         /* Process the ops of the previous session. */
 444                         if (prev_sess != NULL) {
 445                                 processed_ops = process_ops(c_ops, prev_sess,
 446                                 qp, burst_size, &enqueued_ops);
 447                                 if (processed_ops < burst_size) {
 448                                         burst_size = 0;
 449                                         break;
 450                                 }
 451
 452                                 burst_size = 0;
 453                                 prev_sess = NULL;
 454                         }
 455
 456                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 457                                                         qp, &enqueued_ops);
 458                         if (processed_ops != 1)
 459                                 break;
 460
 461                         continue;
 462                 }
 463
 464                 /* Batch ops that share the same session. */
 465                 if (prev_sess == NULL) {
 466                         prev_sess = curr_sess;
 467                         c_ops[burst_size++] = curr_c_op;
 468                 } else if (curr_sess == prev_sess) {
 469                         c_ops[burst_size++] = curr_c_op;
 470                         /*
 471                          * When there are enough ops to process in a batch,
 472                          * process them, and start a new batch.
 473                          */
 474                         if (burst_size == SNOW3G_MAX_BURST) {
 475                                 processed_ops = process_ops(c_ops, prev_sess,
 476                                                 qp, burst_size, &enqueued_ops);
 477                                 if (processed_ops < burst_size) {
 478                                         burst_size = 0;
 479                                         break;
 480                                 }
 481
 482                                 burst_size = 0;
 483                                 prev_sess = NULL;
 484                         }
 485                 } else {
 486                         /*
 487                          * Different session, process the ops
 488                          * of the previous session.
 489                          */
 490                         processed_ops = process_ops(c_ops, prev_sess,
 491                                         qp, burst_size, &enqueued_ops);
 492                         if (processed_ops < burst_size) {
 493                                 burst_size = 0;
 494                                 break;
 495                         }
 496
 497                         burst_size = 0;
 498                         prev_sess = curr_sess;
 499
 500                         c_ops[burst_size++] = curr_c_op;
 501                 }
 502         }
 503
 504         if (burst_size != 0) {
 505                 /* Process the crypto ops of the last session. */
 506                 processed_ops = process_ops(c_ops, prev_sess,
 507                                 qp, burst_size, &enqueued_ops);
 508         }
 509
 510         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 511         return enqueued_ops;
 512 }
 513
 514 static uint16_t
 515 snow3g_pmd_dequeue_burst(void *queue_pair,
 516                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 517 {
 518         struct snow3g_qp *qp = queue_pair;
 519
 520         unsigned nb_dequeued;
 521
 522         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 523                         (void **)c_ops, nb_ops, NULL);
 524         qp->qp_stats.dequeued_count += nb_dequeued;
 525
 526         return nb_dequeued;
 527 }
 528
 529 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 530
 531 static int
 532 cryptodev_snow3g_create(const char *name,
 533                         struct rte_vdev_device *vdev,
 534                         struct rte_cryptodev_pmd_init_params *init_params)
 535 {
 536         struct rte_cryptodev *dev;
 537         struct snow3g_private *internals;
 538         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 539
 540         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
 541         if (dev == NULL) {
 542                 SNOW3G_LOG(ERR, "failed to create cryptodev vdev");
 543                 goto init_error;
 544         }
 545
 546         dev->driver_id = cryptodev_driver_id;
 547         dev->dev_ops = rte_snow3g_pmd_ops;
 548
 549         /* Register RX/TX burst functions for data path. */
 550         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 551         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 552
 553         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 554                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 555                         cpu_flags;
 556
 557         internals = dev->data->dev_private;
 558
 559         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 560
 561         return 0;
 562 init_error:
 563         SNOW3G_LOG(ERR, "driver %s: cryptodev_snow3g_create failed",
 564                         init_params->name);
 565
 566         cryptodev_snow3g_remove(vdev);
 567         return -EFAULT;
 568 }
 569
 570 static int
 571 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 572 {
 573         struct rte_cryptodev_pmd_init_params init_params = {
 574                 "",
 575                 sizeof(struct snow3g_private),
 576                 rte_socket_id(),
 577                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS
 578         };
 579         const char *name;
 580         const char *input_args;
 581
 582         name = rte_vdev_device_name(vdev);
 583         if (name == NULL)
 584                 return -EINVAL;
 585         input_args = rte_vdev_device_args(vdev);
 586
 587         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 588
 589         return cryptodev_snow3g_create(name, vdev, &init_params);
 590 }
 591
 592 static int
 593 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 594 {
 595         struct rte_cryptodev *cryptodev;
 596         const char *name;
 597
 598         name = rte_vdev_device_name(vdev);
 599         if (name == NULL)
 600                 return -EINVAL;
 601
 602         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
 603         if (cryptodev == NULL)
 604                 return -ENODEV;
 605
 606         return rte_cryptodev_pmd_destroy(cryptodev);
 607 }
 608
 609 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 610         .probe = cryptodev_snow3g_probe,
 611         .remove = cryptodev_snow3g_remove
 612 };
 613
 614 static struct cryptodev_driver snow3g_crypto_drv;
 615
 616 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 617 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 618 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 619         "max_nb_queue_pairs=<int> "
 620         "socket_id=<int>");
 621 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv,
 622                 cryptodev_snow3g_pmd_drv.driver, cryptodev_driver_id);
 623
 624 RTE_INIT(snow3g_init_log)
 625 {
 626         snow3g_logtype_driver = rte_log_register("pmd.crypto.snow3g");
 627 }