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_cryptodev_vdev.h>
  39 #include <rte_vdev.h>
  40 #include <rte_malloc.h>
  41 #include <rte_cpuflags.h>
  42
  43 #include "rte_snow3g_pmd_private.h"
  44
  45 #define SNOW3G_IV_LENGTH 16
  46 #define SNOW3G_DIGEST_LENGTH 4
  47 #define SNOW3G_MAX_BURST 8
  48 #define BYTE_LEN 8
  49
  50 static uint8_t cryptodev_driver_id;
  51
  52 /** Get xform chain order. */
  53 static enum snow3g_operation
  54 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  55 {
  56         if (xform == NULL)
  57                 return SNOW3G_OP_NOT_SUPPORTED;
  58
  59         if (xform->next)
  60                 if (xform->next->next != NULL)
  61                         return SNOW3G_OP_NOT_SUPPORTED;
  62
  63         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  64                 if (xform->next == NULL)
  65                         return SNOW3G_OP_ONLY_AUTH;
  66                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  67                         return SNOW3G_OP_AUTH_CIPHER;
  68                 else
  69                         return SNOW3G_OP_NOT_SUPPORTED;
  70         }
  71
  72         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  73                 if (xform->next == NULL)
  74                         return SNOW3G_OP_ONLY_CIPHER;
  75                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  76                         return SNOW3G_OP_CIPHER_AUTH;
  77                 else
  78                         return SNOW3G_OP_NOT_SUPPORTED;
  79         }
  80
  81         return SNOW3G_OP_NOT_SUPPORTED;
  82 }
  83
  84
  85 /** Parse crypto xform chain and set private session parameters. */
  86 int
  87 snow3g_set_session_parameters(struct snow3g_session *sess,
  88                 const struct rte_crypto_sym_xform *xform)
  89 {
  90         const struct rte_crypto_sym_xform *auth_xform = NULL;
  91         const struct rte_crypto_sym_xform *cipher_xform = NULL;
  92         enum snow3g_operation mode;
  93
  94         /* Select Crypto operation - hash then cipher / cipher then hash */
  95         mode = snow3g_get_mode(xform);
  96
  97         switch (mode) {
  98         case SNOW3G_OP_CIPHER_AUTH:
  99                 auth_xform = xform->next;
 100
 101                 /* Fall-through */
 102         case SNOW3G_OP_ONLY_CIPHER:
 103                 cipher_xform = xform;
 104                 break;
 105         case SNOW3G_OP_AUTH_CIPHER:
 106                 cipher_xform = xform->next;
 107                 /* Fall-through */
 108         case SNOW3G_OP_ONLY_AUTH:
 109                 auth_xform = xform;
 110                 break;
 111         case SNOW3G_OP_NOT_SUPPORTED:
 112         default:
 113                 SNOW3G_LOG_ERR("Unsupported operation chain order parameter");
 114                 return -EINVAL;
 115         }
 116
 117         if (cipher_xform) {
 118                 /* Only SNOW 3G UEA2 supported */
 119                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
 120                         return -EINVAL;
 121
 122                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
 123                         SNOW3G_LOG_ERR("Wrong IV length");
 124                         return -EINVAL;
 125                 }
 126                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 127
 128                 /* Initialize key */
 129                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
 130                                 &sess->pKeySched_cipher);
 131         }
 132
 133         if (auth_xform) {
 134                 /* Only SNOW 3G UIA2 supported */
 135                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 136                         return -EINVAL;
 137
 138                 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
 139                         SNOW3G_LOG_ERR("Wrong digest length");
 140                         return -EINVAL;
 141                 }
 142
 143                 sess->auth_op = auth_xform->auth.op;
 144
 145                 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
 146                         SNOW3G_LOG_ERR("Wrong IV length");
 147                         return -EINVAL;
 148                 }
 149                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 150
 151                 /* Initialize key */
 152                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 153                                 &sess->pKeySched_hash);
 154         }
 155
 156
 157         sess->op = mode;
 158
 159         return 0;
 160 }
 161
 162 /** Get SNOW 3G session. */
 163 static struct snow3g_session *
 164 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 165 {
 166         struct snow3g_session *sess;
 167
 168         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 169                 if (unlikely(op->sym->session->driver_id !=
 170                                 cryptodev_driver_id))
 171                         return NULL;
 172
 173                 sess = (struct snow3g_session *)op->sym->session->_private;
 174         } else  {
 175                 struct rte_cryptodev_sym_session *c_sess = NULL;
 176
 177                 if (rte_mempool_get(qp->sess_mp, (void **)&c_sess))
 178                         return NULL;
 179
 180                 sess = (struct snow3g_session *)c_sess->_private;
 181
 182                 if (unlikely(snow3g_set_session_parameters(sess,
 183                                 op->sym->xform) != 0))
 184                         return NULL;
 185         }
 186
 187         return sess;
 188 }
 189
 190 /** Encrypt/decrypt mbufs with same cipher key. */
 191 static uint8_t
 192 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 193                 struct snow3g_session *session,
 194                 uint8_t num_ops)
 195 {
 196         unsigned i;
 197         uint8_t processed_ops = 0;
 198         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 199         uint8_t *iv[SNOW3G_MAX_BURST];
 200         uint32_t num_bytes[SNOW3G_MAX_BURST];
 201
 202         for (i = 0; i < num_ops; i++) {
 203                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 204                                 (ops[i]->sym->cipher.data.offset >> 3);
 205                 dst[i] = ops[i]->sym->m_dst ?
 206                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 207                                 (ops[i]->sym->cipher.data.offset >> 3) :
 208                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 209                                 (ops[i]->sym->cipher.data.offset >> 3);
 210                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 211                                 session->cipher_iv_offset);
 212                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 213
 214                 processed_ops++;
 215         }
 216
 217         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 218                         num_bytes, processed_ops);
 219
 220         return processed_ops;
 221 }
 222
 223 /** Encrypt/decrypt mbuf (bit level function). */
 224 static uint8_t
 225 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 226                 struct snow3g_session *session)
 227 {
 228         uint8_t *src, *dst;
 229         uint8_t *iv;
 230         uint32_t length_in_bits, offset_in_bits;
 231
 232         offset_in_bits = op->sym->cipher.data.offset;
 233         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 234         if (op->sym->m_dst == NULL) {
 235                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 236                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 237                 return 0;
 238         }
 239         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 240         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 241                                 session->cipher_iv_offset);
 242         length_in_bits = op->sym->cipher.data.length;
 243
 244         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 245                         src, dst, length_in_bits, offset_in_bits);
 246
 247         return 1;
 248 }
 249
 250 /** Generate/verify hash from mbufs with same hash key. */
 251 static int
 252 process_snow3g_hash_op(struct rte_crypto_op **ops,
 253                 struct snow3g_session *session,
 254                 uint8_t num_ops)
 255 {
 256         unsigned i;
 257         uint8_t processed_ops = 0;
 258         uint8_t *src, *dst;
 259         uint32_t length_in_bits;
 260         uint8_t *iv;
 261
 262         for (i = 0; i < num_ops; i++) {
 263                 /* Data must be byte aligned */
 264                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 265                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 266                         SNOW3G_LOG_ERR("Offset");
 267                         break;
 268                 }
 269
 270                 length_in_bits = ops[i]->sym->auth.data.length;
 271
 272                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 273                                 (ops[i]->sym->auth.data.offset >> 3);
 274                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 275                                 session->auth_iv_offset);
 276
 277                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 278                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 279                                         SNOW3G_DIGEST_LENGTH);
 280
 281                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 282                                         iv, src,
 283                                         length_in_bits, dst);
 284                         /* Verify digest. */
 285                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 286                                         SNOW3G_DIGEST_LENGTH) != 0)
 287                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 288
 289                         /* Trim area used for digest from mbuf. */
 290                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 291                                         SNOW3G_DIGEST_LENGTH);
 292                 } else  {
 293                         dst = ops[i]->sym->auth.digest.data;
 294
 295                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 296                                         iv, src,
 297                                         length_in_bits, dst);
 298                 }
 299                 processed_ops++;
 300         }
 301
 302         return processed_ops;
 303 }
 304
 305 /** Process a batch of crypto ops which shares the same session. */
 306 static int
 307 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 308                 struct snow3g_qp *qp, uint8_t num_ops,
 309                 uint16_t *accumulated_enqueued_ops)
 310 {
 311         unsigned i;
 312         unsigned enqueued_ops, processed_ops;
 313
 314 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 315         for (i = 0; i < num_ops; i++) {
 316                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 317                                 (ops[i]->sym->m_dst != NULL &&
 318                                 !rte_pktmbuf_is_contiguous(
 319                                                 ops[i]->sym->m_dst))) {
 320                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 321                                 "op (%p) provides noncontiguous mbuf as "
 322                                 "source/destination buffer.\n", ops[i]);
 323                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 324                         return 0;
 325                 }
 326         }
 327 #endif
 328
 329         switch (session->op) {
 330         case SNOW3G_OP_ONLY_CIPHER:
 331                 processed_ops = process_snow3g_cipher_op(ops,
 332                                 session, num_ops);
 333                 break;
 334         case SNOW3G_OP_ONLY_AUTH:
 335                 processed_ops = process_snow3g_hash_op(ops, session,
 336                                 num_ops);
 337                 break;
 338         case SNOW3G_OP_CIPHER_AUTH:
 339                 processed_ops = process_snow3g_cipher_op(ops, session,
 340                                 num_ops);
 341                 process_snow3g_hash_op(ops, session, processed_ops);
 342                 break;
 343         case SNOW3G_OP_AUTH_CIPHER:
 344                 processed_ops = process_snow3g_hash_op(ops, session,
 345                                 num_ops);
 346                 process_snow3g_cipher_op(ops, session, processed_ops);
 347                 break;
 348         default:
 349                 /* Operation not supported. */
 350                 processed_ops = 0;
 351         }
 352
 353         for (i = 0; i < num_ops; i++) {
 354                 /*
 355                  * If there was no error/authentication failure,
 356                  * change status to successful.
 357                  */
 358                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 359                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 360                 /* Free session if a session-less crypto op. */
 361                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 362                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 363                         ops[i]->sym->session = NULL;
 364                 }
 365         }
 366
 367         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 368                         (void **)ops, processed_ops, NULL);
 369         qp->qp_stats.enqueued_count += enqueued_ops;
 370         *accumulated_enqueued_ops += enqueued_ops;
 371
 372         return enqueued_ops;
 373 }
 374
 375 /** Process a crypto op with length/offset in bits. */
 376 static int
 377 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 378                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 379 {
 380         unsigned enqueued_op, processed_op;
 381
 382         switch (session->op) {
 383         case SNOW3G_OP_ONLY_CIPHER:
 384                 processed_op = process_snow3g_cipher_op_bit(op,
 385                                 session);
 386                 break;
 387         case SNOW3G_OP_ONLY_AUTH:
 388                 processed_op = process_snow3g_hash_op(&op, session, 1);
 389                 break;
 390         case SNOW3G_OP_CIPHER_AUTH:
 391                 processed_op = process_snow3g_cipher_op_bit(op, session);
 392                 if (processed_op == 1)
 393                         process_snow3g_hash_op(&op, session, 1);
 394                 break;
 395         case SNOW3G_OP_AUTH_CIPHER:
 396                 processed_op = process_snow3g_hash_op(&op, session, 1);
 397                 if (processed_op == 1)
 398                         process_snow3g_cipher_op_bit(op, session);
 399                 break;
 400         default:
 401                 /* Operation not supported. */
 402                 processed_op = 0;
 403         }
 404
 405         /*
 406          * If there was no error/authentication failure,
 407          * change status to successful.
 408          */
 409         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 410                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 411
 412         /* Free session if a session-less crypto op. */
 413         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 414                 rte_mempool_put(qp->sess_mp, 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_crypto_vdev_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         if (init_params->name[0] == '\0')
 556                 snprintf(init_params->name, sizeof(init_params->name),
 557                                 "%s", name);
 558
 559         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 560                         sizeof(struct snow3g_private), init_params->socket_id,
 561                         vdev);
 562         if (dev == NULL) {
 563                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 564                 goto init_error;
 565         }
 566
 567         dev->driver_id = cryptodev_driver_id;
 568         dev->dev_ops = rte_snow3g_pmd_ops;
 569
 570         /* Register RX/TX burst functions for data path. */
 571         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 572         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 573
 574         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 575                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 576                         cpu_flags;
 577
 578         internals = dev->data->dev_private;
 579
 580         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 581         internals->max_nb_sessions = init_params->max_nb_sessions;
 582
 583         return 0;
 584 init_error:
 585         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 586                         init_params->name);
 587
 588         cryptodev_snow3g_remove(vdev);
 589         return -EFAULT;
 590 }
 591
 592 static int
 593 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 594 {
 595         struct rte_crypto_vdev_init_params init_params = {
 596                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 597                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 598                 rte_socket_id(),
 599                 {0}
 600         };
 601         const char *name;
 602         const char *input_args;
 603
 604         name = rte_vdev_device_name(vdev);
 605         if (name == NULL)
 606                 return -EINVAL;
 607         input_args = rte_vdev_device_args(vdev);
 608
 609         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 610
 611         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 612                         init_params.socket_id);
 613         if (init_params.name[0] != '\0')
 614                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 615                         init_params.name);
 616         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 617                         init_params.max_nb_queue_pairs);
 618         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 619                         init_params.max_nb_sessions);
 620
 621         return cryptodev_snow3g_create(name, vdev, &init_params);
 622 }
 623
 624 static int
 625 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 626 {
 627         const char *name;
 628
 629         name = rte_vdev_device_name(vdev);
 630         if (name == NULL)
 631                 return -EINVAL;
 632
 633         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 634                         " on numa socket %u\n",
 635                         name, rte_socket_id());
 636
 637         return 0;
 638 }
 639
 640 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 641         .probe = cryptodev_snow3g_probe,
 642         .remove = cryptodev_snow3g_remove
 643 };
 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(cryptodev_snow3g_pmd_drv, cryptodev_driver_id);