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 /** 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 -EINVAL;
 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 -EINVAL;
 119
 120                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
 121                         SNOW3G_LOG_ERR("Wrong IV length");
 122                         return -EINVAL;
 123                 }
 124                 sess->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 -EINVAL;
 135                 sess->auth_op = auth_xform->auth.op;
 136                 /* Initialize key */
 137                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 138                                 &sess->pKeySched_hash);
 139         }
 140
 141
 142         sess->op = mode;
 143
 144         return 0;
 145 }
 146
 147 /** Get SNOW 3G session. */
 148 static struct snow3g_session *
 149 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 150 {
 151         struct snow3g_session *sess;
 152
 153         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 154                 if (unlikely(op->sym->session->dev_type !=
 155                                 RTE_CRYPTODEV_SNOW3G_PMD))
 156                         return NULL;
 157
 158                 sess = (struct snow3g_session *)op->sym->session->_private;
 159         } else  {
 160                 struct rte_cryptodev_session *c_sess = NULL;
 161
 162                 if (rte_mempool_get(qp->sess_mp, (void **)&c_sess))
 163                         return NULL;
 164
 165                 sess = (struct snow3g_session *)c_sess->_private;
 166
 167                 if (unlikely(snow3g_set_session_parameters(sess,
 168                                 op->sym->xform) != 0))
 169                         return NULL;
 170         }
 171
 172         return sess;
 173 }
 174
 175 /** Encrypt/decrypt mbufs with same cipher key. */
 176 static uint8_t
 177 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 178                 struct snow3g_session *session,
 179                 uint8_t num_ops)
 180 {
 181         unsigned i;
 182         uint8_t processed_ops = 0;
 183         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 184         uint8_t *iv[SNOW3G_MAX_BURST];
 185         uint32_t num_bytes[SNOW3G_MAX_BURST];
 186
 187         for (i = 0; i < num_ops; i++) {
 188                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 189                                 (ops[i]->sym->cipher.data.offset >> 3);
 190                 dst[i] = ops[i]->sym->m_dst ?
 191                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 192                                 (ops[i]->sym->cipher.data.offset >> 3) :
 193                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 194                                 (ops[i]->sym->cipher.data.offset >> 3);
 195                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 196                                 session->iv_offset);
 197                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 198
 199                 processed_ops++;
 200         }
 201
 202         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 203                         num_bytes, processed_ops);
 204
 205         return processed_ops;
 206 }
 207
 208 /** Encrypt/decrypt mbuf (bit level function). */
 209 static uint8_t
 210 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 211                 struct snow3g_session *session)
 212 {
 213         uint8_t *src, *dst;
 214         uint8_t *iv;
 215         uint32_t length_in_bits, offset_in_bits;
 216
 217         offset_in_bits = op->sym->cipher.data.offset;
 218         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 219         if (op->sym->m_dst == NULL) {
 220                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 221                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 222                 return 0;
 223         }
 224         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 225         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 226                                 session->iv_offset);
 227         length_in_bits = op->sym->cipher.data.length;
 228
 229         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 230                         src, dst, length_in_bits, offset_in_bits);
 231
 232         return 1;
 233 }
 234
 235 /** Generate/verify hash from mbufs with same hash key. */
 236 static int
 237 process_snow3g_hash_op(struct rte_crypto_op **ops,
 238                 struct snow3g_session *session,
 239                 uint8_t num_ops)
 240 {
 241         unsigned i;
 242         uint8_t processed_ops = 0;
 243         uint8_t *src, *dst;
 244         uint32_t length_in_bits;
 245
 246         for (i = 0; i < num_ops; i++) {
 247                 if (unlikely(ops[i]->sym->auth.aad.length != SNOW3G_IV_LENGTH)) {
 248                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 249                         SNOW3G_LOG_ERR("aad");
 250                         break;
 251                 }
 252
 253                 if (unlikely(ops[i]->sym->auth.digest.length != SNOW3G_DIGEST_LENGTH)) {
 254                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 255                         SNOW3G_LOG_ERR("digest");
 256                         break;
 257                 }
 258
 259                 /* Data must be byte aligned */
 260                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 261                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 262                         SNOW3G_LOG_ERR("Offset");
 263                         break;
 264                 }
 265
 266                 length_in_bits = ops[i]->sym->auth.data.length;
 267
 268                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 269                                 (ops[i]->sym->auth.data.offset >> 3);
 270
 271                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 272                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 273                                         ops[i]->sym->auth.digest.length);
 274
 275                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 276                                         ops[i]->sym->auth.aad.data, src,
 277                                         length_in_bits, dst);
 278                         /* Verify digest. */
 279                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 280                                         ops[i]->sym->auth.digest.length) != 0)
 281                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 282
 283                         /* Trim area used for digest from mbuf. */
 284                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 285                                         ops[i]->sym->auth.digest.length);
 286                 } else  {
 287                         dst = ops[i]->sym->auth.digest.data;
 288
 289                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 290                                         ops[i]->sym->auth.aad.data, 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(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(ops, session, processed_ops);
 336                 break;
 337         case SNOW3G_OP_AUTH_CIPHER:
 338                 processed_ops = process_snow3g_hash_op(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                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 357                         ops[i]->sym->session = NULL;
 358                 }
 359         }
 360
 361         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 362                         (void **)ops, processed_ops, NULL);
 363         qp->qp_stats.enqueued_count += enqueued_ops;
 364         *accumulated_enqueued_ops += enqueued_ops;
 365
 366         return enqueued_ops;
 367 }
 368
 369 /** Process a crypto op with length/offset in bits. */
 370 static int
 371 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 372                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 373 {
 374         unsigned enqueued_op, processed_op;
 375
 376         switch (session->op) {
 377         case SNOW3G_OP_ONLY_CIPHER:
 378                 processed_op = process_snow3g_cipher_op_bit(op,
 379                                 session);
 380                 break;
 381         case SNOW3G_OP_ONLY_AUTH:
 382                 processed_op = process_snow3g_hash_op(&op, session, 1);
 383                 break;
 384         case SNOW3G_OP_CIPHER_AUTH:
 385                 processed_op = process_snow3g_cipher_op_bit(op, session);
 386                 if (processed_op == 1)
 387                         process_snow3g_hash_op(&op, session, 1);
 388                 break;
 389         case SNOW3G_OP_AUTH_CIPHER:
 390                 processed_op = process_snow3g_hash_op(&op, session, 1);
 391                 if (processed_op == 1)
 392                         process_snow3g_cipher_op_bit(op, session);
 393                 break;
 394         default:
 395                 /* Operation not supported. */
 396                 processed_op = 0;
 397         }
 398
 399         /*
 400          * If there was no error/authentication failure,
 401          * change status to successful.
 402          */
 403         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 404                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 405
 406         /* Free session if a session-less crypto op. */
 407         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 408                 rte_mempool_put(qp->sess_mp, op->sym->session);
 409                 op->sym->session = NULL;
 410         }
 411
 412         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 413                         (void **)&op, processed_op, NULL);
 414         qp->qp_stats.enqueued_count += enqueued_op;
 415         *accumulated_enqueued_ops += enqueued_op;
 416
 417         return enqueued_op;
 418 }
 419
 420 static uint16_t
 421 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 422                 uint16_t nb_ops)
 423 {
 424         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 425         struct rte_crypto_op *curr_c_op;
 426
 427         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 428         struct snow3g_qp *qp = queue_pair;
 429         unsigned i;
 430         uint8_t burst_size = 0;
 431         uint16_t enqueued_ops = 0;
 432         uint8_t processed_ops;
 433
 434         for (i = 0; i < nb_ops; i++) {
 435                 curr_c_op = ops[i];
 436
 437                 /* Set status as enqueued (not processed yet) by default. */
 438                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 439
 440                 curr_sess = snow3g_get_session(qp, curr_c_op);
 441                 if (unlikely(curr_sess == NULL ||
 442                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 443                         curr_c_op->status =
 444                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 445                         break;
 446                 }
 447
 448                 /* If length/offset is at bit-level, process this buffer alone. */
 449                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 450                                 || ((curr_c_op->sym->cipher.data.offset
 451                                         % BYTE_LEN) != 0)) {
 452                         /* Process the ops of the previous session. */
 453                         if (prev_sess != NULL) {
 454                                 processed_ops = process_ops(c_ops, prev_sess,
 455                                 qp, burst_size, &enqueued_ops);
 456                                 if (processed_ops < burst_size) {
 457                                         burst_size = 0;
 458                                         break;
 459                                 }
 460
 461                                 burst_size = 0;
 462                                 prev_sess = NULL;
 463                         }
 464
 465                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 466                                                         qp, &enqueued_ops);
 467                         if (processed_ops != 1)
 468                                 break;
 469
 470                         continue;
 471                 }
 472
 473                 /* Batch ops that share the same session. */
 474                 if (prev_sess == NULL) {
 475                         prev_sess = curr_sess;
 476                         c_ops[burst_size++] = curr_c_op;
 477                 } else if (curr_sess == prev_sess) {
 478                         c_ops[burst_size++] = curr_c_op;
 479                         /*
 480                          * When there are enough ops to process in a batch,
 481                          * process them, and start a new batch.
 482                          */
 483                         if (burst_size == SNOW3G_MAX_BURST) {
 484                                 processed_ops = process_ops(c_ops, prev_sess,
 485                                                 qp, burst_size, &enqueued_ops);
 486                                 if (processed_ops < burst_size) {
 487                                         burst_size = 0;
 488                                         break;
 489                                 }
 490
 491                                 burst_size = 0;
 492                                 prev_sess = NULL;
 493                         }
 494                 } else {
 495                         /*
 496                          * Different session, process the ops
 497                          * of the previous session.
 498                          */
 499                         processed_ops = process_ops(c_ops, prev_sess,
 500                                         qp, burst_size, &enqueued_ops);
 501                         if (processed_ops < burst_size) {
 502                                 burst_size = 0;
 503                                 break;
 504                         }
 505
 506                         burst_size = 0;
 507                         prev_sess = curr_sess;
 508
 509                         c_ops[burst_size++] = curr_c_op;
 510                 }
 511         }
 512
 513         if (burst_size != 0) {
 514                 /* Process the crypto ops of the last session. */
 515                 processed_ops = process_ops(c_ops, prev_sess,
 516                                 qp, burst_size, &enqueued_ops);
 517         }
 518
 519         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 520         return enqueued_ops;
 521 }
 522
 523 static uint16_t
 524 snow3g_pmd_dequeue_burst(void *queue_pair,
 525                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 526 {
 527         struct snow3g_qp *qp = queue_pair;
 528
 529         unsigned nb_dequeued;
 530
 531         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 532                         (void **)c_ops, nb_ops, NULL);
 533         qp->qp_stats.dequeued_count += nb_dequeued;
 534
 535         return nb_dequeued;
 536 }
 537
 538 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 539
 540 static int
 541 cryptodev_snow3g_create(const char *name,
 542                         struct rte_vdev_device *vdev,
 543                         struct rte_crypto_vdev_init_params *init_params)
 544 {
 545         struct rte_cryptodev *dev;
 546         struct snow3g_private *internals;
 547         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 548
 549         if (init_params->name[0] == '\0')
 550                 snprintf(init_params->name, sizeof(init_params->name),
 551                                 "%s", name);
 552
 553         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 554                         sizeof(struct snow3g_private), init_params->socket_id,
 555                         vdev);
 556         if (dev == NULL) {
 557                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 558                 goto init_error;
 559         }
 560
 561         dev->dev_type = RTE_CRYPTODEV_SNOW3G_PMD;
 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         internals->max_nb_sessions = init_params->max_nb_sessions;
 576
 577         return 0;
 578 init_error:
 579         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 580                         init_params->name);
 581
 582         cryptodev_snow3g_remove(vdev);
 583         return -EFAULT;
 584 }
 585
 586 static int
 587 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 588 {
 589         struct rte_crypto_vdev_init_params init_params = {
 590                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 591                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 592                 rte_socket_id(),
 593                 {0}
 594         };
 595         const char *name;
 596         const char *input_args;
 597
 598         name = rte_vdev_device_name(vdev);
 599         if (name == NULL)
 600                 return -EINVAL;
 601         input_args = rte_vdev_device_args(vdev);
 602
 603         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 604
 605         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 606                         init_params.socket_id);
 607         if (init_params.name[0] != '\0')
 608                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 609                         init_params.name);
 610         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 611                         init_params.max_nb_queue_pairs);
 612         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 613                         init_params.max_nb_sessions);
 614
 615         return cryptodev_snow3g_create(name, vdev, &init_params);
 616 }
 617
 618 static int
 619 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 620 {
 621         const char *name;
 622
 623         name = rte_vdev_device_name(vdev);
 624         if (name == NULL)
 625                 return -EINVAL;
 626
 627         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 628                         " on numa socket %u\n",
 629                         name, rte_socket_id());
 630
 631         return 0;
 632 }
 633
 634 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 635         .probe = cryptodev_snow3g_probe,
 636         .remove = cryptodev_snow3g_remove
 637 };
 638
 639 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 640 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 641 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 642         "max_nb_queue_pairs=<int> "
 643         "max_nb_sessions=<int> "
 644         "socket_id=<int>");