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                 uint8_t cipher_key[SNOW3G_MAX_KEY_SIZE];
  88
  89                 /* Only SNOW 3G UEA2 supported */
  90                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
  91                         return -ENOTSUP;
  92
  93                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
  94                         SNOW3G_LOG(ERR, "Wrong IV length");
  95                         return -EINVAL;
  96                 }
  97                 if (cipher_xform->cipher.key.length > SNOW3G_MAX_KEY_SIZE) {
  98                         SNOW3G_LOG(ERR, "Not enough memory to store the key");
  99                         return -ENOMEM;
 100                 }
 101
 102                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 103
 104                 /* Initialize key */
 105                 memcpy(cipher_key, cipher_xform->cipher.key.data,
 106                                 cipher_xform->cipher.key.length);
 107                 sso_snow3g_init_key_sched(cipher_key, &sess->pKeySched_cipher);
 108         }
 109
 110         if (auth_xform) {
 111                 uint8_t auth_key[SNOW3G_MAX_KEY_SIZE];
 112
 113                 /* Only SNOW 3G UIA2 supported */
 114                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 115                         return -ENOTSUP;
 116
 117                 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
 118                         SNOW3G_LOG(ERR, "Wrong digest length");
 119                         return -EINVAL;
 120                 }
 121                 if (auth_xform->auth.key.length > SNOW3G_MAX_KEY_SIZE) {
 122                         SNOW3G_LOG(ERR, "Not enough memory to store the key");
 123                         return -ENOMEM;
 124                 }
 125
 126                 sess->auth_op = auth_xform->auth.op;
 127
 128                 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
 129                         SNOW3G_LOG(ERR, "Wrong IV length");
 130                         return -EINVAL;
 131                 }
 132                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 133
 134                 /* Initialize key */
 135                 memcpy(auth_key, auth_xform->auth.key.data,
 136                                 auth_xform->auth.key.length);
 137                 sso_snow3g_init_key_sched(auth_key, &sess->pKeySched_hash);
 138         }
 139
 140
 141         sess->op = mode;
 142
 143         return 0;
 144 }
 145
 146 /** Get SNOW 3G session. */
 147 static struct snow3g_session *
 148 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 149 {
 150         struct snow3g_session *sess = NULL;
 151
 152         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 153                 if (likely(op->sym->session != NULL))
 154                         sess = (struct snow3g_session *)
 155                                         get_sym_session_private_data(
 156                                         op->sym->session,
 157                                         cryptodev_driver_id);
 158         } else {
 159                 void *_sess = NULL;
 160                 void *_sess_private_data = NULL;
 161
 162                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 163                         return NULL;
 164
 165                 if (rte_mempool_get(qp->sess_mp_priv,
 166                                 (void **)&_sess_private_data))
 167                         return NULL;
 168
 169                 sess = (struct snow3g_session *)_sess_private_data;
 170
 171                 if (unlikely(snow3g_set_session_parameters(sess,
 172                                 op->sym->xform) != 0)) {
 173                         rte_mempool_put(qp->sess_mp, _sess);
 174                         rte_mempool_put(qp->sess_mp_priv, _sess_private_data);
 175                         sess = NULL;
 176                 }
 177                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 178                 set_sym_session_private_data(op->sym->session,
 179                                 cryptodev_driver_id, _sess_private_data);
 180         }
 181
 182         if (unlikely(sess == NULL))
 183                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 184
 185
 186         return sess;
 187 }
 188
 189 /** Encrypt/decrypt mbufs with same cipher key. */
 190 static uint8_t
 191 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 192                 struct snow3g_session *session,
 193                 uint8_t num_ops)
 194 {
 195         unsigned i;
 196         uint8_t processed_ops = 0;
 197         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 198         uint8_t *iv[SNOW3G_MAX_BURST];
 199         uint32_t num_bytes[SNOW3G_MAX_BURST];
 200
 201         for (i = 0; i < num_ops; i++) {
 202                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 203                                 (ops[i]->sym->cipher.data.offset >> 3);
 204                 dst[i] = ops[i]->sym->m_dst ?
 205                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 206                                 (ops[i]->sym->cipher.data.offset >> 3) :
 207                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 208                                 (ops[i]->sym->cipher.data.offset >> 3);
 209                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 210                                 session->cipher_iv_offset);
 211                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 212
 213                 processed_ops++;
 214         }
 215
 216         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 217                         num_bytes, processed_ops);
 218
 219         return processed_ops;
 220 }
 221
 222 /** Encrypt/decrypt mbuf (bit level function). */
 223 static uint8_t
 224 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 225                 struct snow3g_session *session)
 226 {
 227         uint8_t *src, *dst;
 228         uint8_t *iv;
 229         uint32_t length_in_bits, offset_in_bits;
 230
 231         offset_in_bits = op->sym->cipher.data.offset;
 232         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 233         if (op->sym->m_dst == NULL) {
 234                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 235                 SNOW3G_LOG(ERR, "bit-level in-place not supported\n");
 236                 return 0;
 237         }
 238         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 239         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 240                                 session->cipher_iv_offset);
 241         length_in_bits = op->sym->cipher.data.length;
 242
 243         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 244                         src, dst, length_in_bits, offset_in_bits);
 245
 246         return 1;
 247 }
 248
 249 /** Generate/verify hash from mbufs with same hash key. */
 250 static int
 251 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
 252                 struct snow3g_session *session,
 253                 uint8_t num_ops)
 254 {
 255         unsigned i;
 256         uint8_t processed_ops = 0;
 257         uint8_t *src, *dst;
 258         uint32_t length_in_bits;
 259         uint8_t *iv;
 260
 261         for (i = 0; i < num_ops; i++) {
 262                 /* Data must be byte aligned */
 263                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 264                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 265                         SNOW3G_LOG(ERR, "Offset");
 266                         break;
 267                 }
 268
 269                 length_in_bits = ops[i]->sym->auth.data.length;
 270
 271                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 272                                 (ops[i]->sym->auth.data.offset >> 3);
 273                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 274                                 session->auth_iv_offset);
 275
 276                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 277                         dst = qp->temp_digest;
 278
 279                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 280                                         iv, src,
 281                                         length_in_bits, dst);
 282                         /* Verify digest. */
 283                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 284                                         SNOW3G_DIGEST_LENGTH) != 0)
 285                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 286                 } else  {
 287                         dst = ops[i]->sym->auth.digest.data;
 288
 289                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 290                                         iv, src,
 291                                         length_in_bits, dst);
 292                 }
 293                 processed_ops++;
 294         }
 295
 296         return processed_ops;
 297 }
 298
 299 /** Process a batch of crypto ops which shares the same session. */
 300 static int
 301 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 302                 struct snow3g_qp *qp, uint8_t num_ops,
 303                 uint16_t *accumulated_enqueued_ops)
 304 {
 305         unsigned i;
 306         unsigned enqueued_ops, processed_ops;
 307
 308 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 309         for (i = 0; i < num_ops; i++) {
 310                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 311                                 (ops[i]->sym->m_dst != NULL &&
 312                                 !rte_pktmbuf_is_contiguous(
 313                                                 ops[i]->sym->m_dst))) {
 314                         SNOW3G_LOG(ERR, "PMD supports only contiguous mbufs, "
 315                                 "op (%p) provides noncontiguous mbuf as "
 316                                 "source/destination buffer.\n", ops[i]);
 317                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 318                         return 0;
 319                 }
 320         }
 321 #endif
 322
 323         switch (session->op) {
 324         case SNOW3G_OP_ONLY_CIPHER:
 325                 processed_ops = process_snow3g_cipher_op(ops,
 326                                 session, num_ops);
 327                 break;
 328         case SNOW3G_OP_ONLY_AUTH:
 329                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 330                                 num_ops);
 331                 break;
 332         case SNOW3G_OP_CIPHER_AUTH:
 333                 processed_ops = process_snow3g_cipher_op(ops, session,
 334                                 num_ops);
 335                 process_snow3g_hash_op(qp, ops, session, processed_ops);
 336                 break;
 337         case SNOW3G_OP_AUTH_CIPHER:
 338                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 339                                 num_ops);
 340                 process_snow3g_cipher_op(ops, session, processed_ops);
 341                 break;
 342         default:
 343                 /* Operation not supported. */
 344                 processed_ops = 0;
 345         }
 346
 347         for (i = 0; i < num_ops; i++) {
 348                 /*
 349                  * If there was no error/authentication failure,
 350                  * change status to successful.
 351                  */
 352                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 353                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 354                 /* Free session if a session-less crypto op. */
 355                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 356                         memset(session, 0, sizeof(struct snow3g_session));
 357                         memset(ops[i]->sym->session, 0,
 358                         rte_cryptodev_sym_get_existing_header_session_size(
 359                                         ops[i]->sym->session));
 360                         rte_mempool_put(qp->sess_mp_priv, session);
 361                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 362                         ops[i]->sym->session = NULL;
 363                 }
 364         }
 365
 366         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 367                         (void **)ops, processed_ops, NULL);
 368         qp->qp_stats.enqueued_count += enqueued_ops;
 369         *accumulated_enqueued_ops += enqueued_ops;
 370
 371         return enqueued_ops;
 372 }
 373
 374 /** Process a crypto op with length/offset in bits. */
 375 static int
 376 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 377                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 378 {
 379         unsigned enqueued_op, processed_op;
 380
 381         switch (session->op) {
 382         case SNOW3G_OP_ONLY_CIPHER:
 383                 processed_op = process_snow3g_cipher_op_bit(op,
 384                                 session);
 385                 break;
 386         case SNOW3G_OP_ONLY_AUTH:
 387                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 388                 break;
 389         case SNOW3G_OP_CIPHER_AUTH:
 390                 processed_op = process_snow3g_cipher_op_bit(op, session);
 391                 if (processed_op == 1)
 392                         process_snow3g_hash_op(qp, &op, session, 1);
 393                 break;
 394         case SNOW3G_OP_AUTH_CIPHER:
 395                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 396                 if (processed_op == 1)
 397                         process_snow3g_cipher_op_bit(op, session);
 398                 break;
 399         default:
 400                 /* Operation not supported. */
 401                 processed_op = 0;
 402         }
 403
 404         /*
 405          * If there was no error/authentication failure,
 406          * change status to successful.
 407          */
 408         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 409                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 410
 411         /* Free session if a session-less crypto op. */
 412         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 413                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 414                 rte_cryptodev_sym_session_free(op->sym->session);
 415                 op->sym->session = NULL;
 416         }
 417
 418         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 419                         (void **)&op, processed_op, NULL);
 420         qp->qp_stats.enqueued_count += enqueued_op;
 421         *accumulated_enqueued_ops += enqueued_op;
 422
 423         return enqueued_op;
 424 }
 425
 426 static uint16_t
 427 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 428                 uint16_t nb_ops)
 429 {
 430         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 431         struct rte_crypto_op *curr_c_op;
 432
 433         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 434         struct snow3g_qp *qp = queue_pair;
 435         unsigned i;
 436         uint8_t burst_size = 0;
 437         uint16_t enqueued_ops = 0;
 438         uint8_t processed_ops;
 439
 440         for (i = 0; i < nb_ops; i++) {
 441                 curr_c_op = ops[i];
 442
 443                 /* Set status as enqueued (not processed yet) by default. */
 444                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 445
 446                 curr_sess = snow3g_get_session(qp, curr_c_op);
 447                 if (unlikely(curr_sess == NULL ||
 448                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 449                         curr_c_op->status =
 450                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 451                         break;
 452                 }
 453
 454                 /* If length/offset is at bit-level, process this buffer alone. */
 455                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 456                                 || ((curr_c_op->sym->cipher.data.offset
 457                                         % BYTE_LEN) != 0)) {
 458                         /* Process the ops of the previous session. */
 459                         if (prev_sess != NULL) {
 460                                 processed_ops = process_ops(c_ops, prev_sess,
 461                                 qp, burst_size, &enqueued_ops);
 462                                 if (processed_ops < burst_size) {
 463                                         burst_size = 0;
 464                                         break;
 465                                 }
 466
 467                                 burst_size = 0;
 468                                 prev_sess = NULL;
 469                         }
 470
 471                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 472                                                         qp, &enqueued_ops);
 473                         if (processed_ops != 1)
 474                                 break;
 475
 476                         continue;
 477                 }
 478
 479                 /* Batch ops that share the same session. */
 480                 if (prev_sess == NULL) {
 481                         prev_sess = curr_sess;
 482                         c_ops[burst_size++] = curr_c_op;
 483                 } else if (curr_sess == prev_sess) {
 484                         c_ops[burst_size++] = curr_c_op;
 485                         /*
 486                          * When there are enough ops to process in a batch,
 487                          * process them, and start a new batch.
 488                          */
 489                         if (burst_size == SNOW3G_MAX_BURST) {
 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 = NULL;
 499                         }
 500                 } else {
 501                         /*
 502                          * Different session, process the ops
 503                          * of the previous session.
 504                          */
 505                         processed_ops = process_ops(c_ops, prev_sess,
 506                                         qp, burst_size, &enqueued_ops);
 507                         if (processed_ops < burst_size) {
 508                                 burst_size = 0;
 509                                 break;
 510                         }
 511
 512                         burst_size = 0;
 513                         prev_sess = curr_sess;
 514
 515                         c_ops[burst_size++] = curr_c_op;
 516                 }
 517         }
 518
 519         if (burst_size != 0) {
 520                 /* Process the crypto ops of the last session. */
 521                 processed_ops = process_ops(c_ops, prev_sess,
 522                                 qp, burst_size, &enqueued_ops);
 523         }
 524
 525         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 526         return enqueued_ops;
 527 }
 528
 529 static uint16_t
 530 snow3g_pmd_dequeue_burst(void *queue_pair,
 531                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 532 {
 533         struct snow3g_qp *qp = queue_pair;
 534
 535         unsigned nb_dequeued;
 536
 537         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 538                         (void **)c_ops, nb_ops, NULL);
 539         qp->qp_stats.dequeued_count += nb_dequeued;
 540
 541         return nb_dequeued;
 542 }
 543
 544 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 545
 546 static int
 547 cryptodev_snow3g_create(const char *name,
 548                         struct rte_vdev_device *vdev,
 549                         struct rte_cryptodev_pmd_init_params *init_params)
 550 {
 551         struct rte_cryptodev *dev;
 552         struct snow3g_private *internals;
 553         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 554
 555         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
 556         if (dev == NULL) {
 557                 SNOW3G_LOG(ERR, "failed to create cryptodev vdev");
 558                 goto init_error;
 559         }
 560
 561         dev->driver_id = cryptodev_driver_id;
 562         dev->dev_ops = rte_snow3g_pmd_ops;
 563
 564         /* Register RX/TX burst functions for data path. */
 565         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 566         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 567
 568         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 569                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 570                         cpu_flags;
 571
 572         internals = dev->data->dev_private;
 573
 574         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 575
 576         return 0;
 577 init_error:
 578         SNOW3G_LOG(ERR, "driver %s: cryptodev_snow3g_create failed",
 579                         init_params->name);
 580
 581         cryptodev_snow3g_remove(vdev);
 582         return -EFAULT;
 583 }
 584
 585 static int
 586 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 587 {
 588         struct rte_cryptodev_pmd_init_params init_params = {
 589                 "",
 590                 sizeof(struct snow3g_private),
 591                 rte_socket_id(),
 592                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS
 593         };
 594         const char *name;
 595         const char *input_args;
 596
 597         name = rte_vdev_device_name(vdev);
 598         if (name == NULL)
 599                 return -EINVAL;
 600         input_args = rte_vdev_device_args(vdev);
 601
 602         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 603
 604         return cryptodev_snow3g_create(name, vdev, &init_params);
 605 }
 606
 607 static int
 608 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 609 {
 610         struct rte_cryptodev *cryptodev;
 611         const char *name;
 612
 613         name = rte_vdev_device_name(vdev);
 614         if (name == NULL)
 615                 return -EINVAL;
 616
 617         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
 618         if (cryptodev == NULL)
 619                 return -ENODEV;
 620
 621         return rte_cryptodev_pmd_destroy(cryptodev);
 622 }
 623
 624 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 625         .probe = cryptodev_snow3g_probe,
 626         .remove = cryptodev_snow3g_remove
 627 };
 628
 629 static struct cryptodev_driver snow3g_crypto_drv;
 630
 631 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 632 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 633 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 634         "max_nb_queue_pairs=<int> "
 635         "socket_id=<int>");
 636 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv,
 637                 cryptodev_snow3g_pmd_drv.driver, cryptodev_driver_id);
 638
 639 RTE_INIT(snow3g_init_log)
 640 {
 641         snow3g_logtype_driver = rte_log_register("pmd.crypto.snow3g");
 642 }