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_hexdump.h>
  35 #include <rte_cryptodev.h>
  36 #include <rte_cryptodev_pmd.h>
  37 #include <rte_bus_vdev.h>
  38 #include <rte_malloc.h>
  39 #include <rte_cpuflags.h>
  40
  41 #include "rte_snow3g_pmd_private.h"
  42
  43 #define SNOW3G_IV_LENGTH 16
  44 #define SNOW3G_MAX_BURST 8
  45 #define BYTE_LEN 8
  46
  47 static uint8_t cryptodev_driver_id;
  48
  49 /** Get xform chain order. */
  50 static enum snow3g_operation
  51 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  52 {
  53         if (xform == NULL)
  54                 return SNOW3G_OP_NOT_SUPPORTED;
  55
  56         if (xform->next)
  57                 if (xform->next->next != NULL)
  58                         return SNOW3G_OP_NOT_SUPPORTED;
  59
  60         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  61                 if (xform->next == NULL)
  62                         return SNOW3G_OP_ONLY_AUTH;
  63                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  64                         return SNOW3G_OP_AUTH_CIPHER;
  65                 else
  66                         return SNOW3G_OP_NOT_SUPPORTED;
  67         }
  68
  69         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  70                 if (xform->next == NULL)
  71                         return SNOW3G_OP_ONLY_CIPHER;
  72                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  73                         return SNOW3G_OP_CIPHER_AUTH;
  74                 else
  75                         return SNOW3G_OP_NOT_SUPPORTED;
  76         }
  77
  78         return SNOW3G_OP_NOT_SUPPORTED;
  79 }
  80
  81
  82 /** Parse crypto xform chain and set private session parameters. */
  83 int
  84 snow3g_set_session_parameters(struct snow3g_session *sess,
  85                 const struct rte_crypto_sym_xform *xform)
  86 {
  87         const struct rte_crypto_sym_xform *auth_xform = NULL;
  88         const struct rte_crypto_sym_xform *cipher_xform = NULL;
  89         enum snow3g_operation mode;
  90
  91         /* Select Crypto operation - hash then cipher / cipher then hash */
  92         mode = snow3g_get_mode(xform);
  93
  94         switch (mode) {
  95         case SNOW3G_OP_CIPHER_AUTH:
  96                 auth_xform = xform->next;
  97
  98                 /* Fall-through */
  99         case SNOW3G_OP_ONLY_CIPHER:
 100                 cipher_xform = xform;
 101                 break;
 102         case SNOW3G_OP_AUTH_CIPHER:
 103                 cipher_xform = xform->next;
 104                 /* Fall-through */
 105         case SNOW3G_OP_ONLY_AUTH:
 106                 auth_xform = xform;
 107                 break;
 108         case SNOW3G_OP_NOT_SUPPORTED:
 109         default:
 110                 SNOW3G_LOG_ERR("Unsupported operation chain order parameter");
 111                 return -ENOTSUP;
 112         }
 113
 114         if (cipher_xform) {
 115                 /* Only SNOW 3G UEA2 supported */
 116                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
 117                         return -ENOTSUP;
 118
 119                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
 120                         SNOW3G_LOG_ERR("Wrong IV length");
 121                         return -EINVAL;
 122                 }
 123                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 124
 125                 /* Initialize key */
 126                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
 127                                 &sess->pKeySched_cipher);
 128         }
 129
 130         if (auth_xform) {
 131                 /* Only SNOW 3G UIA2 supported */
 132                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 133                         return -ENOTSUP;
 134
 135                 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
 136                         SNOW3G_LOG_ERR("Wrong digest length");
 137                         return -EINVAL;
 138                 }
 139
 140                 sess->auth_op = auth_xform->auth.op;
 141
 142                 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
 143                         SNOW3G_LOG_ERR("Wrong IV length");
 144                         return -EINVAL;
 145                 }
 146                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 147
 148                 /* Initialize key */
 149                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 150                                 &sess->pKeySched_hash);
 151         }
 152
 153
 154         sess->op = mode;
 155
 156         return 0;
 157 }
 158
 159 /** Get SNOW 3G session. */
 160 static struct snow3g_session *
 161 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 162 {
 163         struct snow3g_session *sess = NULL;
 164
 165         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 166                 if (likely(op->sym->session != NULL))
 167                         sess = (struct snow3g_session *)
 168                                         get_session_private_data(
 169                                         op->sym->session,
 170                                         cryptodev_driver_id);
 171         } else {
 172                 void *_sess = NULL;
 173                 void *_sess_private_data = NULL;
 174
 175                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 176                         return NULL;
 177
 178                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 179                         return NULL;
 180
 181                 sess = (struct snow3g_session *)_sess_private_data;
 182
 183                 if (unlikely(snow3g_set_session_parameters(sess,
 184                                 op->sym->xform) != 0)) {
 185                         rte_mempool_put(qp->sess_mp, _sess);
 186                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 187                         sess = NULL;
 188                 }
 189                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 190                 set_session_private_data(op->sym->session, cryptodev_driver_id,
 191                         _sess_private_data);
 192         }
 193
 194         if (unlikely(sess == NULL))
 195                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 196
 197
 198         return sess;
 199 }
 200
 201 /** Encrypt/decrypt mbufs with same cipher key. */
 202 static uint8_t
 203 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 204                 struct snow3g_session *session,
 205                 uint8_t num_ops)
 206 {
 207         unsigned i;
 208         uint8_t processed_ops = 0;
 209         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 210         uint8_t *iv[SNOW3G_MAX_BURST];
 211         uint32_t num_bytes[SNOW3G_MAX_BURST];
 212
 213         for (i = 0; i < num_ops; i++) {
 214                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 215                                 (ops[i]->sym->cipher.data.offset >> 3);
 216                 dst[i] = ops[i]->sym->m_dst ?
 217                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 218                                 (ops[i]->sym->cipher.data.offset >> 3) :
 219                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 220                                 (ops[i]->sym->cipher.data.offset >> 3);
 221                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 222                                 session->cipher_iv_offset);
 223                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 224
 225                 processed_ops++;
 226         }
 227
 228         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 229                         num_bytes, processed_ops);
 230
 231         return processed_ops;
 232 }
 233
 234 /** Encrypt/decrypt mbuf (bit level function). */
 235 static uint8_t
 236 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 237                 struct snow3g_session *session)
 238 {
 239         uint8_t *src, *dst;
 240         uint8_t *iv;
 241         uint32_t length_in_bits, offset_in_bits;
 242
 243         offset_in_bits = op->sym->cipher.data.offset;
 244         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 245         if (op->sym->m_dst == NULL) {
 246                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 247                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 248                 return 0;
 249         }
 250         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 251         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 252                                 session->cipher_iv_offset);
 253         length_in_bits = op->sym->cipher.data.length;
 254
 255         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 256                         src, dst, length_in_bits, offset_in_bits);
 257
 258         return 1;
 259 }
 260
 261 /** Generate/verify hash from mbufs with same hash key. */
 262 static int
 263 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
 264                 struct snow3g_session *session,
 265                 uint8_t num_ops)
 266 {
 267         unsigned i;
 268         uint8_t processed_ops = 0;
 269         uint8_t *src, *dst;
 270         uint32_t length_in_bits;
 271         uint8_t *iv;
 272
 273         for (i = 0; i < num_ops; i++) {
 274                 /* Data must be byte aligned */
 275                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 276                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 277                         SNOW3G_LOG_ERR("Offset");
 278                         break;
 279                 }
 280
 281                 length_in_bits = ops[i]->sym->auth.data.length;
 282
 283                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 284                                 (ops[i]->sym->auth.data.offset >> 3);
 285                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 286                                 session->auth_iv_offset);
 287
 288                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 289                         dst = qp->temp_digest;
 290
 291                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 292                                         iv, src,
 293                                         length_in_bits, dst);
 294                         /* Verify digest. */
 295                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 296                                         SNOW3G_DIGEST_LENGTH) != 0)
 297                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 298                 } else  {
 299                         dst = ops[i]->sym->auth.digest.data;
 300
 301                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 302                                         iv, src,
 303                                         length_in_bits, dst);
 304                 }
 305                 processed_ops++;
 306         }
 307
 308         return processed_ops;
 309 }
 310
 311 /** Process a batch of crypto ops which shares the same session. */
 312 static int
 313 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 314                 struct snow3g_qp *qp, uint8_t num_ops,
 315                 uint16_t *accumulated_enqueued_ops)
 316 {
 317         unsigned i;
 318         unsigned enqueued_ops, processed_ops;
 319
 320 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 321         for (i = 0; i < num_ops; i++) {
 322                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 323                                 (ops[i]->sym->m_dst != NULL &&
 324                                 !rte_pktmbuf_is_contiguous(
 325                                                 ops[i]->sym->m_dst))) {
 326                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 327                                 "op (%p) provides noncontiguous mbuf as "
 328                                 "source/destination buffer.\n", ops[i]);
 329                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 330                         return 0;
 331                 }
 332         }
 333 #endif
 334
 335         switch (session->op) {
 336         case SNOW3G_OP_ONLY_CIPHER:
 337                 processed_ops = process_snow3g_cipher_op(ops,
 338                                 session, num_ops);
 339                 break;
 340         case SNOW3G_OP_ONLY_AUTH:
 341                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 342                                 num_ops);
 343                 break;
 344         case SNOW3G_OP_CIPHER_AUTH:
 345                 processed_ops = process_snow3g_cipher_op(ops, session,
 346                                 num_ops);
 347                 process_snow3g_hash_op(qp, ops, session, processed_ops);
 348                 break;
 349         case SNOW3G_OP_AUTH_CIPHER:
 350                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 351                                 num_ops);
 352                 process_snow3g_cipher_op(ops, session, processed_ops);
 353                 break;
 354         default:
 355                 /* Operation not supported. */
 356                 processed_ops = 0;
 357         }
 358
 359         for (i = 0; i < num_ops; i++) {
 360                 /*
 361                  * If there was no error/authentication failure,
 362                  * change status to successful.
 363                  */
 364                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 365                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 366                 /* Free session if a session-less crypto op. */
 367                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 368                         memset(session, 0, sizeof(struct snow3g_session));
 369                         memset(ops[i]->sym->session, 0,
 370                                         rte_cryptodev_get_header_session_size());
 371                         rte_mempool_put(qp->sess_mp, session);
 372                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 373                         ops[i]->sym->session = NULL;
 374                 }
 375         }
 376
 377         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 378                         (void **)ops, processed_ops, NULL);
 379         qp->qp_stats.enqueued_count += enqueued_ops;
 380         *accumulated_enqueued_ops += enqueued_ops;
 381
 382         return enqueued_ops;
 383 }
 384
 385 /** Process a crypto op with length/offset in bits. */
 386 static int
 387 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 388                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 389 {
 390         unsigned enqueued_op, processed_op;
 391
 392         switch (session->op) {
 393         case SNOW3G_OP_ONLY_CIPHER:
 394                 processed_op = process_snow3g_cipher_op_bit(op,
 395                                 session);
 396                 break;
 397         case SNOW3G_OP_ONLY_AUTH:
 398                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 399                 break;
 400         case SNOW3G_OP_CIPHER_AUTH:
 401                 processed_op = process_snow3g_cipher_op_bit(op, session);
 402                 if (processed_op == 1)
 403                         process_snow3g_hash_op(qp, &op, session, 1);
 404                 break;
 405         case SNOW3G_OP_AUTH_CIPHER:
 406                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 407                 if (processed_op == 1)
 408                         process_snow3g_cipher_op_bit(op, session);
 409                 break;
 410         default:
 411                 /* Operation not supported. */
 412                 processed_op = 0;
 413         }
 414
 415         /*
 416          * If there was no error/authentication failure,
 417          * change status to successful.
 418          */
 419         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 420                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 421
 422         /* Free session if a session-less crypto op. */
 423         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 424                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 425                 rte_cryptodev_sym_session_free(op->sym->session);
 426                 op->sym->session = NULL;
 427         }
 428
 429         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 430                         (void **)&op, processed_op, NULL);
 431         qp->qp_stats.enqueued_count += enqueued_op;
 432         *accumulated_enqueued_ops += enqueued_op;
 433
 434         return enqueued_op;
 435 }
 436
 437 static uint16_t
 438 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 439                 uint16_t nb_ops)
 440 {
 441         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 442         struct rte_crypto_op *curr_c_op;
 443
 444         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 445         struct snow3g_qp *qp = queue_pair;
 446         unsigned i;
 447         uint8_t burst_size = 0;
 448         uint16_t enqueued_ops = 0;
 449         uint8_t processed_ops;
 450
 451         for (i = 0; i < nb_ops; i++) {
 452                 curr_c_op = ops[i];
 453
 454                 /* Set status as enqueued (not processed yet) by default. */
 455                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 456
 457                 curr_sess = snow3g_get_session(qp, curr_c_op);
 458                 if (unlikely(curr_sess == NULL ||
 459                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 460                         curr_c_op->status =
 461                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 462                         break;
 463                 }
 464
 465                 /* If length/offset is at bit-level, process this buffer alone. */
 466                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 467                                 || ((curr_c_op->sym->cipher.data.offset
 468                                         % BYTE_LEN) != 0)) {
 469                         /* Process the ops of the previous session. */
 470                         if (prev_sess != NULL) {
 471                                 processed_ops = process_ops(c_ops, prev_sess,
 472                                 qp, burst_size, &enqueued_ops);
 473                                 if (processed_ops < burst_size) {
 474                                         burst_size = 0;
 475                                         break;
 476                                 }
 477
 478                                 burst_size = 0;
 479                                 prev_sess = NULL;
 480                         }
 481
 482                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 483                                                         qp, &enqueued_ops);
 484                         if (processed_ops != 1)
 485                                 break;
 486
 487                         continue;
 488                 }
 489
 490                 /* Batch ops that share the same session. */
 491                 if (prev_sess == NULL) {
 492                         prev_sess = curr_sess;
 493                         c_ops[burst_size++] = curr_c_op;
 494                 } else if (curr_sess == prev_sess) {
 495                         c_ops[burst_size++] = curr_c_op;
 496                         /*
 497                          * When there are enough ops to process in a batch,
 498                          * process them, and start a new batch.
 499                          */
 500                         if (burst_size == SNOW3G_MAX_BURST) {
 501                                 processed_ops = process_ops(c_ops, prev_sess,
 502                                                 qp, burst_size, &enqueued_ops);
 503                                 if (processed_ops < burst_size) {
 504                                         burst_size = 0;
 505                                         break;
 506                                 }
 507
 508                                 burst_size = 0;
 509                                 prev_sess = NULL;
 510                         }
 511                 } else {
 512                         /*
 513                          * Different session, process the ops
 514                          * of the previous session.
 515                          */
 516                         processed_ops = process_ops(c_ops, prev_sess,
 517                                         qp, burst_size, &enqueued_ops);
 518                         if (processed_ops < burst_size) {
 519                                 burst_size = 0;
 520                                 break;
 521                         }
 522
 523                         burst_size = 0;
 524                         prev_sess = curr_sess;
 525
 526                         c_ops[burst_size++] = curr_c_op;
 527                 }
 528         }
 529
 530         if (burst_size != 0) {
 531                 /* Process the crypto ops of the last session. */
 532                 processed_ops = process_ops(c_ops, prev_sess,
 533                                 qp, burst_size, &enqueued_ops);
 534         }
 535
 536         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 537         return enqueued_ops;
 538 }
 539
 540 static uint16_t
 541 snow3g_pmd_dequeue_burst(void *queue_pair,
 542                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 543 {
 544         struct snow3g_qp *qp = queue_pair;
 545
 546         unsigned nb_dequeued;
 547
 548         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 549                         (void **)c_ops, nb_ops, NULL);
 550         qp->qp_stats.dequeued_count += nb_dequeued;
 551
 552         return nb_dequeued;
 553 }
 554
 555 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 556
 557 static int
 558 cryptodev_snow3g_create(const char *name,
 559                         struct rte_vdev_device *vdev,
 560                         struct rte_cryptodev_pmd_init_params *init_params)
 561 {
 562         struct rte_cryptodev *dev;
 563         struct snow3g_private *internals;
 564         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 565
 566         dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
 567         if (dev == NULL) {
 568                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 569                 goto init_error;
 570         }
 571
 572         dev->driver_id = cryptodev_driver_id;
 573         dev->dev_ops = rte_snow3g_pmd_ops;
 574
 575         /* Register RX/TX burst functions for data path. */
 576         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 577         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 578
 579         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 580                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 581                         cpu_flags;
 582
 583         internals = dev->data->dev_private;
 584
 585         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 586         internals->max_nb_sessions = init_params->max_nb_sessions;
 587
 588         return 0;
 589 init_error:
 590         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 591                         init_params->name);
 592
 593         cryptodev_snow3g_remove(vdev);
 594         return -EFAULT;
 595 }
 596
 597 static int
 598 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 599 {
 600         struct rte_cryptodev_pmd_init_params init_params = {
 601                 "",
 602                 sizeof(struct snow3g_private),
 603                 rte_socket_id(),
 604                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS,
 605                 RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS
 606         };
 607         const char *name;
 608         const char *input_args;
 609
 610         name = rte_vdev_device_name(vdev);
 611         if (name == NULL)
 612                 return -EINVAL;
 613         input_args = rte_vdev_device_args(vdev);
 614
 615         rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 616
 617         return cryptodev_snow3g_create(name, vdev, &init_params);
 618 }
 619
 620 static int
 621 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 622 {
 623         struct rte_cryptodev *cryptodev;
 624         const char *name;
 625
 626         name = rte_vdev_device_name(vdev);
 627         if (name == NULL)
 628                 return -EINVAL;
 629
 630         cryptodev = rte_cryptodev_pmd_get_named_dev(name);
 631         if (cryptodev == NULL)
 632                 return -ENODEV;
 633
 634         return rte_cryptodev_pmd_destroy(cryptodev);
 635 }
 636
 637 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 638         .probe = cryptodev_snow3g_probe,
 639         .remove = cryptodev_snow3g_remove
 640 };
 641
 642 static struct cryptodev_driver snow3g_crypto_drv;
 643
 644 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 645 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 646 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 647         "max_nb_queue_pairs=<int> "
 648         "max_nb_sessions=<int> "
 649         "socket_id=<int>");
 650 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv, cryptodev_snow3g_pmd_drv,
 651                 cryptodev_driver_id);