drivers/crypto/snow3g/rte_snow3g_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_vdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cpuflags.h>
  41
  42 #include "rte_snow3g_pmd_private.h"
  43
  44 #define SNOW3G_IV_LENGTH 16
  45 #define SNOW3G_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 snow3g_operation
  52 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  53 {
  54         if (xform == NULL)
  55                 return SNOW3G_OP_NOT_SUPPORTED;
  56
  57         if (xform->next)
  58                 if (xform->next->next != NULL)
  59                         return SNOW3G_OP_NOT_SUPPORTED;
  60
  61         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  62                 if (xform->next == NULL)
  63                         return SNOW3G_OP_ONLY_AUTH;
  64                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  65                         return SNOW3G_OP_AUTH_CIPHER;
  66                 else
  67                         return SNOW3G_OP_NOT_SUPPORTED;
  68         }
  69
  70         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  71                 if (xform->next == NULL)
  72                         return SNOW3G_OP_ONLY_CIPHER;
  73                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  74                         return SNOW3G_OP_CIPHER_AUTH;
  75                 else
  76                         return SNOW3G_OP_NOT_SUPPORTED;
  77         }
  78
  79         return SNOW3G_OP_NOT_SUPPORTED;
  80 }
  81
  82
  83 /** Parse crypto xform chain and set private session parameters. */
  84 int
  85 snow3g_set_session_parameters(struct snow3g_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 snow3g_operation mode;
  91
  92         /* Select Crypto operation - hash then cipher / cipher then hash */
  93         mode = snow3g_get_mode(xform);
  94
  95         switch (mode) {
  96         case SNOW3G_OP_CIPHER_AUTH:
  97                 auth_xform = xform->next;
  98
  99                 /* Fall-through */
 100         case SNOW3G_OP_ONLY_CIPHER:
 101                 cipher_xform = xform;
 102                 break;
 103         case SNOW3G_OP_AUTH_CIPHER:
 104                 cipher_xform = xform->next;
 105                 /* Fall-through */
 106         case SNOW3G_OP_ONLY_AUTH:
 107                 auth_xform = xform;
 108                 break;
 109         case SNOW3G_OP_NOT_SUPPORTED:
 110         default:
 111                 SNOW3G_LOG_ERR("Unsupported operation chain order parameter");
 112                 return -ENOTSUP;
 113         }
 114
 115         if (cipher_xform) {
 116                 /* Only SNOW 3G UEA2 supported */
 117                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
 118                         return -ENOTSUP;
 119
 120                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
 121                         SNOW3G_LOG_ERR("Wrong IV length");
 122                         return -EINVAL;
 123                 }
 124                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 125
 126                 /* Initialize key */
 127                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
 128                                 &sess->pKeySched_cipher);
 129         }
 130
 131         if (auth_xform) {
 132                 /* Only SNOW 3G UIA2 supported */
 133                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 134                         return -ENOTSUP;
 135
 136                 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
 137                         SNOW3G_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 != SNOW3G_IV_LENGTH) {
 144                         SNOW3G_LOG_ERR("Wrong IV length");
 145                         return -EINVAL;
 146                 }
 147                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 148
 149                 /* Initialize key */
 150                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 151                                 &sess->pKeySched_hash);
 152         }
 153
 154
 155         sess->op = mode;
 156
 157         return 0;
 158 }
 159
 160 /** Get SNOW 3G session. */
 161 static struct snow3g_session *
 162 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 163 {
 164         struct snow3g_session *sess = NULL;
 165
 166         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 167                 if (likely(op->sym->session != NULL))
 168                         sess = (struct snow3g_session *)
 169                                         get_session_private_data(
 170                                         op->sym->session,
 171                                         cryptodev_driver_id);
 172         } else {
 173                 void *_sess = NULL;
 174                 void *_sess_private_data = NULL;
 175
 176                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 177                         return NULL;
 178
 179                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 180                         return NULL;
 181
 182                 sess = (struct snow3g_session *)_sess_private_data;
 183
 184                 if (unlikely(snow3g_set_session_parameters(sess,
 185                                 op->sym->xform) != 0)) {
 186                         rte_mempool_put(qp->sess_mp, _sess);
 187                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 188                         sess = NULL;
 189                 }
 190                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 191                 set_session_private_data(op->sym->session, cryptodev_driver_id,
 192                         _sess_private_data);
 193         }
 194
 195         if (unlikely(sess == NULL))
 196                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 197
 198
 199         return sess;
 200 }
 201
 202 /** Encrypt/decrypt mbufs with same cipher key. */
 203 static uint8_t
 204 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 205                 struct snow3g_session *session,
 206                 uint8_t num_ops)
 207 {
 208         unsigned i;
 209         uint8_t processed_ops = 0;
 210         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 211         uint8_t *iv[SNOW3G_MAX_BURST];
 212         uint32_t num_bytes[SNOW3G_MAX_BURST];
 213
 214         for (i = 0; i < num_ops; i++) {
 215                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 216                                 (ops[i]->sym->cipher.data.offset >> 3);
 217                 dst[i] = ops[i]->sym->m_dst ?
 218                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 219                                 (ops[i]->sym->cipher.data.offset >> 3) :
 220                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 221                                 (ops[i]->sym->cipher.data.offset >> 3);
 222                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 223                                 session->cipher_iv_offset);
 224                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 225
 226                 processed_ops++;
 227         }
 228
 229         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 230                         num_bytes, processed_ops);
 231
 232         return processed_ops;
 233 }
 234
 235 /** Encrypt/decrypt mbuf (bit level function). */
 236 static uint8_t
 237 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 238                 struct snow3g_session *session)
 239 {
 240         uint8_t *src, *dst;
 241         uint8_t *iv;
 242         uint32_t length_in_bits, offset_in_bits;
 243
 244         offset_in_bits = op->sym->cipher.data.offset;
 245         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 246         if (op->sym->m_dst == NULL) {
 247                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 248                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 249                 return 0;
 250         }
 251         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 252         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 253                                 session->cipher_iv_offset);
 254         length_in_bits = op->sym->cipher.data.length;
 255
 256         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 257                         src, dst, length_in_bits, offset_in_bits);
 258
 259         return 1;
 260 }
 261
 262 /** Generate/verify hash from mbufs with same hash key. */
 263 static int
 264 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
 265                 struct snow3g_session *session,
 266                 uint8_t num_ops)
 267 {
 268         unsigned i;
 269         uint8_t processed_ops = 0;
 270         uint8_t *src, *dst;
 271         uint32_t length_in_bits;
 272         uint8_t *iv;
 273
 274         for (i = 0; i < num_ops; i++) {
 275                 /* Data must be byte aligned */
 276                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 277                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 278                         SNOW3G_LOG_ERR("Offset");
 279                         break;
 280                 }
 281
 282                 length_in_bits = ops[i]->sym->auth.data.length;
 283
 284                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 285                                 (ops[i]->sym->auth.data.offset >> 3);
 286                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 287                                 session->auth_iv_offset);
 288
 289                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 290                         dst = qp->temp_digest;
 291
 292                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 293                                         iv, src,
 294                                         length_in_bits, dst);
 295                         /* Verify digest. */
 296                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 297                                         SNOW3G_DIGEST_LENGTH) != 0)
 298                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 299                 } else  {
 300                         dst = ops[i]->sym->auth.digest.data;
 301
 302                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 303                                         iv, src,
 304                                         length_in_bits, dst);
 305                 }
 306                 processed_ops++;
 307         }
 308
 309         return processed_ops;
 310 }
 311
 312 /** Process a batch of crypto ops which shares the same session. */
 313 static int
 314 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 315                 struct snow3g_qp *qp, uint8_t num_ops,
 316                 uint16_t *accumulated_enqueued_ops)
 317 {
 318         unsigned i;
 319         unsigned enqueued_ops, processed_ops;
 320
 321 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 322         for (i = 0; i < num_ops; i++) {
 323                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 324                                 (ops[i]->sym->m_dst != NULL &&
 325                                 !rte_pktmbuf_is_contiguous(
 326                                                 ops[i]->sym->m_dst))) {
 327                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 328                                 "op (%p) provides noncontiguous mbuf as "
 329                                 "source/destination buffer.\n", ops[i]);
 330                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 331                         return 0;
 332                 }
 333         }
 334 #endif
 335
 336         switch (session->op) {
 337         case SNOW3G_OP_ONLY_CIPHER:
 338                 processed_ops = process_snow3g_cipher_op(ops,
 339                                 session, num_ops);
 340                 break;
 341         case SNOW3G_OP_ONLY_AUTH:
 342                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 343                                 num_ops);
 344                 break;
 345         case SNOW3G_OP_CIPHER_AUTH:
 346                 processed_ops = process_snow3g_cipher_op(ops, session,
 347                                 num_ops);
 348                 process_snow3g_hash_op(qp, ops, session, processed_ops);
 349                 break;
 350         case SNOW3G_OP_AUTH_CIPHER:
 351                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 352                                 num_ops);
 353                 process_snow3g_cipher_op(ops, session, processed_ops);
 354                 break;
 355         default:
 356                 /* Operation not supported. */
 357                 processed_ops = 0;
 358         }
 359
 360         for (i = 0; i < num_ops; i++) {
 361                 /*
 362                  * If there was no error/authentication failure,
 363                  * change status to successful.
 364                  */
 365                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 366                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 367                 /* Free session if a session-less crypto op. */
 368                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 369                         memset(session, 0, sizeof(struct snow3g_session));
 370                         memset(ops[i]->sym->session, 0,
 371                                         rte_cryptodev_get_header_session_size());
 372                         rte_mempool_put(qp->sess_mp, session);
 373                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 374                         ops[i]->sym->session = NULL;
 375                 }
 376         }
 377
 378         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 379                         (void **)ops, processed_ops, NULL);
 380         qp->qp_stats.enqueued_count += enqueued_ops;
 381         *accumulated_enqueued_ops += enqueued_ops;
 382
 383         return enqueued_ops;
 384 }
 385
 386 /** Process a crypto op with length/offset in bits. */
 387 static int
 388 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 389                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 390 {
 391         unsigned enqueued_op, processed_op;
 392
 393         switch (session->op) {
 394         case SNOW3G_OP_ONLY_CIPHER:
 395                 processed_op = process_snow3g_cipher_op_bit(op,
 396                                 session);
 397                 break;
 398         case SNOW3G_OP_ONLY_AUTH:
 399                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 400                 break;
 401         case SNOW3G_OP_CIPHER_AUTH:
 402                 processed_op = process_snow3g_cipher_op_bit(op, session);
 403                 if (processed_op == 1)
 404                         process_snow3g_hash_op(qp, &op, session, 1);
 405                 break;
 406         case SNOW3G_OP_AUTH_CIPHER:
 407                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 408                 if (processed_op == 1)
 409                         process_snow3g_cipher_op_bit(op, session);
 410                 break;
 411         default:
 412                 /* Operation not supported. */
 413                 processed_op = 0;
 414         }
 415
 416         /*
 417          * If there was no error/authentication failure,
 418          * change status to successful.
 419          */
 420         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 421                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 422
 423         /* Free session if a session-less crypto op. */
 424         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 425                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 426                 rte_cryptodev_sym_session_free(op->sym->session);
 427                 op->sym->session = NULL;
 428         }
 429
 430         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 431                         (void **)&op, processed_op, NULL);
 432         qp->qp_stats.enqueued_count += enqueued_op;
 433         *accumulated_enqueued_ops += enqueued_op;
 434
 435         return enqueued_op;
 436 }
 437
 438 static uint16_t
 439 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 440                 uint16_t nb_ops)
 441 {
 442         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 443         struct rte_crypto_op *curr_c_op;
 444
 445         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 446         struct snow3g_qp *qp = queue_pair;
 447         unsigned i;
 448         uint8_t burst_size = 0;
 449         uint16_t enqueued_ops = 0;
 450         uint8_t processed_ops;
 451
 452         for (i = 0; i < nb_ops; i++) {
 453                 curr_c_op = ops[i];
 454
 455                 /* Set status as enqueued (not processed yet) by default. */
 456                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 457
 458                 curr_sess = snow3g_get_session(qp, curr_c_op);
 459                 if (unlikely(curr_sess == NULL ||
 460                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 461                         curr_c_op->status =
 462                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 463                         break;
 464                 }
 465
 466                 /* If length/offset is at bit-level, process this buffer alone. */
 467                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 468                                 || ((curr_c_op->sym->cipher.data.offset
 469                                         % BYTE_LEN) != 0)) {
 470                         /* Process the ops of the previous session. */
 471                         if (prev_sess != NULL) {
 472                                 processed_ops = process_ops(c_ops, prev_sess,
 473                                 qp, burst_size, &enqueued_ops);
 474                                 if (processed_ops < burst_size) {
 475                                         burst_size = 0;
 476                                         break;
 477                                 }
 478
 479                                 burst_size = 0;
 480                                 prev_sess = NULL;
 481                         }
 482
 483                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 484                                                         qp, &enqueued_ops);
 485                         if (processed_ops != 1)
 486                                 break;
 487
 488                         continue;
 489                 }
 490
 491                 /* Batch ops that share the same session. */
 492                 if (prev_sess == NULL) {
 493                         prev_sess = curr_sess;
 494                         c_ops[burst_size++] = curr_c_op;
 495                 } else if (curr_sess == prev_sess) {
 496                         c_ops[burst_size++] = curr_c_op;
 497                         /*
 498                          * When there are enough ops to process in a batch,
 499                          * process them, and start a new batch.
 500                          */
 501                         if (burst_size == SNOW3G_MAX_BURST) {
 502                                 processed_ops = process_ops(c_ops, prev_sess,
 503                                                 qp, burst_size, &enqueued_ops);
 504                                 if (processed_ops < burst_size) {
 505                                         burst_size = 0;
 506                                         break;
 507                                 }
 508
 509                                 burst_size = 0;
 510                                 prev_sess = NULL;
 511                         }
 512                 } else {
 513                         /*
 514                          * Different session, process the ops
 515                          * of the previous session.
 516                          */
 517                         processed_ops = process_ops(c_ops, prev_sess,
 518                                         qp, burst_size, &enqueued_ops);
 519                         if (processed_ops < burst_size) {
 520                                 burst_size = 0;
 521                                 break;
 522                         }
 523
 524                         burst_size = 0;
 525                         prev_sess = curr_sess;
 526
 527                         c_ops[burst_size++] = curr_c_op;
 528                 }
 529         }
 530
 531         if (burst_size != 0) {
 532                 /* Process the crypto ops of the last session. */
 533                 processed_ops = process_ops(c_ops, prev_sess,
 534                                 qp, burst_size, &enqueued_ops);
 535         }
 536
 537         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 538         return enqueued_ops;
 539 }
 540
 541 static uint16_t
 542 snow3g_pmd_dequeue_burst(void *queue_pair,
 543                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 544 {
 545         struct snow3g_qp *qp = queue_pair;
 546
 547         unsigned nb_dequeued;
 548
 549         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 550                         (void **)c_ops, nb_ops, NULL);
 551         qp->qp_stats.dequeued_count += nb_dequeued;
 552
 553         return nb_dequeued;
 554 }
 555
 556 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 557
 558 static int
 559 cryptodev_snow3g_create(const char *name,
 560                         struct rte_vdev_device *vdev,
 561                         struct rte_cryptodev_pmd_init_params *init_params)
 562 {
 563         struct rte_cryptodev *dev;
 564         struct snow3g_private *internals;
 565         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 566
 567         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
 568         if (dev == NULL) {
 569                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 570                 goto init_error;
 571         }
 572
 573         dev->driver_id = cryptodev_driver_id;
 574         dev->dev_ops = rte_snow3g_pmd_ops;
 575
 576         /* Register RX/TX burst functions for data path. */
 577         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 578         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 579
 580         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 581                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 582                         cpu_flags;
 583
 584         internals = dev->data->dev_private;
 585
 586         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 587         internals->max_nb_sessions = init_params->max_nb_sessions;
 588
 589         return 0;
 590 init_error:
 591         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 592                         init_params->name);
 593
 594         cryptodev_snow3g_remove(vdev);
 595         return -EFAULT;
 596 }
 597
 598 static int
 599 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 600 {
 601         struct rte_cryptodev_pmd_init_params init_params = {
 602                 "",
 603                 sizeof(struct snow3g_private),
 604                 rte_socket_id(),
 605                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS,
 606                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS
 607         };
 608         const char *name;
 609         const char *input_args;
 610
 611         name = rte_vdev_device_name(vdev);
 612         if (name == NULL)
 613                 return -EINVAL;
 614         input_args = rte_vdev_device_args(vdev);
 615
 616         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 617
 618         return cryptodev_snow3g_create(name, vdev, &init_params);
 619 }
 620
 621 static int
 622 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 623 {
 624         struct rte_cryptodev *cryptodev;
 625         const char *name;
 626
 627         name = rte_vdev_device_name(vdev);
 628         if (name == NULL)
 629                 return -EINVAL;
 630
 631         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
 632         if (cryptodev == NULL)
 633                 return -ENODEV;
 634
 635         return rte_cryptodev_pmd_destroy(cryptodev);
 636 }
 637
 638 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 639         .probe = cryptodev_snow3g_probe,
 640         .remove = cryptodev_snow3g_remove
 641 };
 642
 643 static struct cryptodev_driver snow3g_crypto_drv;
 644
 645 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 646 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 647 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 648         "max_nb_queue_pairs=<int> "
 649         "max_nb_sessions=<int> "
 650         "socket_id=<int>");
 651 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv, cryptodev_snow3g_pmd_drv,
 652                 cryptodev_driver_id);