drivers/crypto/snow3g/rte_snow3g_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2016 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                 /* Initialize key */
 120                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
 121                                 &sess->pKeySched_cipher);
 122         }
 123
 124         if (auth_xform) {
 125                 /* Only SNOW 3G UIA2 supported */
 126                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 127                         return -EINVAL;
 128                 sess->auth_op = auth_xform->auth.op;
 129                 /* Initialize key */
 130                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 131                                 &sess->pKeySched_hash);
 132         }
 133
 134
 135         sess->op = mode;
 136
 137         return 0;
 138 }
 139
 140 /** Get SNOW 3G session. */
 141 static struct snow3g_session *
 142 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 143 {
 144         struct snow3g_session *sess;
 145
 146         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
 147                 if (unlikely(op->sym->session->dev_type !=
 148                                 RTE_CRYPTODEV_SNOW3G_PMD))
 149                         return NULL;
 150
 151                 sess = (struct snow3g_session *)op->sym->session->_private;
 152         } else  {
 153                 struct rte_cryptodev_session *c_sess = NULL;
 154
 155                 if (rte_mempool_get(qp->sess_mp, (void **)&c_sess))
 156                         return NULL;
 157
 158                 sess = (struct snow3g_session *)c_sess->_private;
 159
 160                 if (unlikely(snow3g_set_session_parameters(sess,
 161                                 op->sym->xform) != 0))
 162                         return NULL;
 163         }
 164
 165         return sess;
 166 }
 167
 168 /** Encrypt/decrypt mbufs with same cipher key. */
 169 static uint8_t
 170 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 171                 struct snow3g_session *session,
 172                 uint8_t num_ops)
 173 {
 174         unsigned i;
 175         uint8_t processed_ops = 0;
 176         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 177         uint8_t *IV[SNOW3G_MAX_BURST];
 178         uint32_t num_bytes[SNOW3G_MAX_BURST];
 179
 180         for (i = 0; i < num_ops; i++) {
 181                 /* Sanity checks. */
 182                 if (unlikely(ops[i]->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 183                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 184                         SNOW3G_LOG_ERR("iv");
 185                         break;
 186                 }
 187
 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] = ops[i]->sym->cipher.iv.data;
 196                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 197
 198                 processed_ops++;
 199         }
 200
 201         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, IV, src, dst,
 202                         num_bytes, processed_ops);
 203
 204         return processed_ops;
 205 }
 206
 207 /** Encrypt/decrypt mbuf (bit level function). */
 208 static uint8_t
 209 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 210                 struct snow3g_session *session)
 211 {
 212         uint8_t *src, *dst;
 213         uint8_t *IV;
 214         uint32_t length_in_bits, offset_in_bits;
 215
 216         /* Sanity checks. */
 217         if (unlikely(op->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 218                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 219                 SNOW3G_LOG_ERR("iv");
 220                 return 0;
 221         }
 222
 223         offset_in_bits = op->sym->cipher.data.offset;
 224         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 225         if (op->sym->m_dst == NULL) {
 226                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 227                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 228                 return 0;
 229         }
 230         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 231         IV = op->sym->cipher.iv.data;
 232         length_in_bits = op->sym->cipher.data.length;
 233
 234         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, IV,
 235                         src, dst, length_in_bits, offset_in_bits);
 236
 237         return 1;
 238 }
 239
 240 /** Generate/verify hash from mbufs with same hash key. */
 241 static int
 242 process_snow3g_hash_op(struct rte_crypto_op **ops,
 243                 struct snow3g_session *session,
 244                 uint8_t num_ops)
 245 {
 246         unsigned i;
 247         uint8_t processed_ops = 0;
 248         uint8_t *src, *dst;
 249         uint32_t length_in_bits;
 250
 251         for (i = 0; i < num_ops; i++) {
 252                 if (unlikely(ops[i]->sym->auth.aad.length != SNOW3G_IV_LENGTH)) {
 253                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 254                         SNOW3G_LOG_ERR("aad");
 255                         break;
 256                 }
 257
 258                 if (unlikely(ops[i]->sym->auth.digest.length != SNOW3G_DIGEST_LENGTH)) {
 259                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 260                         SNOW3G_LOG_ERR("digest");
 261                         break;
 262                 }
 263
 264                 /* Data must be byte aligned */
 265                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 266                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 267                         SNOW3G_LOG_ERR("Offset");
 268                         break;
 269                 }
 270
 271                 length_in_bits = ops[i]->sym->auth.data.length;
 272
 273                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 274                                 (ops[i]->sym->auth.data.offset >> 3);
 275
 276                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 277                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 278                                         ops[i]->sym->auth.digest.length);
 279
 280                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 281                                         ops[i]->sym->auth.aad.data, src,
 282                                         length_in_bits, dst);
 283                         /* Verify digest. */
 284                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 285                                         ops[i]->sym->auth.digest.length) != 0)
 286                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 287
 288                         /* Trim area used for digest from mbuf. */
 289                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 290                                         ops[i]->sym->auth.digest.length);
 291                 } else  {
 292                         dst = ops[i]->sym->auth.digest.data;
 293
 294                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 295                                         ops[i]->sym->auth.aad.data, src,
 296                                         length_in_bits, dst);
 297                 }
 298                 processed_ops++;
 299         }
 300
 301         return processed_ops;
 302 }
 303
 304 /** Process a batch of crypto ops which shares the same session. */
 305 static int
 306 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 307                 struct snow3g_qp *qp, uint8_t num_ops,
 308                 uint16_t *accumulated_enqueued_ops)
 309 {
 310         unsigned i;
 311         unsigned enqueued_ops, processed_ops;
 312
 313 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 314         for (i = 0; i < num_ops; i++) {
 315                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 316                                 (ops[i]->sym->m_dst != NULL &&
 317                                 !rte_pktmbuf_is_contiguous(
 318                                                 ops[i]->sym->m_dst))) {
 319                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 320                                 "op (%p) provides noncontiguous mbuf as "
 321                                 "source/destination buffer.\n", ops[i]);
 322                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 323                         return 0;
 324                 }
 325         }
 326 #endif
 327
 328         switch (session->op) {
 329         case SNOW3G_OP_ONLY_CIPHER:
 330                 processed_ops = process_snow3g_cipher_op(ops,
 331                                 session, num_ops);
 332                 break;
 333         case SNOW3G_OP_ONLY_AUTH:
 334                 processed_ops = process_snow3g_hash_op(ops, session,
 335                                 num_ops);
 336                 break;
 337         case SNOW3G_OP_CIPHER_AUTH:
 338                 processed_ops = process_snow3g_cipher_op(ops, session,
 339                                 num_ops);
 340                 process_snow3g_hash_op(ops, session, processed_ops);
 341                 break;
 342         case SNOW3G_OP_AUTH_CIPHER:
 343                 processed_ops = process_snow3g_hash_op(ops, session,
 344                                 num_ops);
 345                 process_snow3g_cipher_op(ops, session, processed_ops);
 346                 break;
 347         default:
 348                 /* Operation not supported. */
 349                 processed_ops = 0;
 350         }
 351
 352         for (i = 0; i < num_ops; i++) {
 353                 /*
 354                  * If there was no error/authentication failure,
 355                  * change status to successful.
 356                  */
 357                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 358                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 359                 /* Free session if a session-less crypto op. */
 360                 if (ops[i]->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 361                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 362                         ops[i]->sym->session = NULL;
 363                 }
 364         }
 365
 366         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 367                         (void **)ops, processed_ops, NULL);
 368         qp->qp_stats.enqueued_count += enqueued_ops;
 369         *accumulated_enqueued_ops += enqueued_ops;
 370
 371         return enqueued_ops;
 372 }
 373
 374 /** Process a crypto op with length/offset in bits. */
 375 static int
 376 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 377                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 378 {
 379         unsigned enqueued_op, processed_op;
 380
 381         switch (session->op) {
 382         case SNOW3G_OP_ONLY_CIPHER:
 383                 processed_op = process_snow3g_cipher_op_bit(op,
 384                                 session);
 385                 break;
 386         case SNOW3G_OP_ONLY_AUTH:
 387                 processed_op = process_snow3g_hash_op(&op, session, 1);
 388                 break;
 389         case SNOW3G_OP_CIPHER_AUTH:
 390                 processed_op = process_snow3g_cipher_op_bit(op, session);
 391                 if (processed_op == 1)
 392                         process_snow3g_hash_op(&op, session, 1);
 393                 break;
 394         case SNOW3G_OP_AUTH_CIPHER:
 395                 processed_op = process_snow3g_hash_op(&op, session, 1);
 396                 if (processed_op == 1)
 397                         process_snow3g_cipher_op_bit(op, session);
 398                 break;
 399         default:
 400                 /* Operation not supported. */
 401                 processed_op = 0;
 402         }
 403
 404         /*
 405          * If there was no error/authentication failure,
 406          * change status to successful.
 407          */
 408         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 409                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 410
 411         /* Free session if a session-less crypto op. */
 412         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 413                 rte_mempool_put(qp->sess_mp, op->sym->session);
 414                 op->sym->session = NULL;
 415         }
 416
 417         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 418                         (void **)&op, processed_op, NULL);
 419         qp->qp_stats.enqueued_count += enqueued_op;
 420         *accumulated_enqueued_ops += enqueued_op;
 421
 422         return enqueued_op;
 423 }
 424
 425 static uint16_t
 426 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 427                 uint16_t nb_ops)
 428 {
 429         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 430         struct rte_crypto_op *curr_c_op;
 431
 432         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 433         struct snow3g_qp *qp = queue_pair;
 434         unsigned i;
 435         uint8_t burst_size = 0;
 436         uint16_t enqueued_ops = 0;
 437         uint8_t processed_ops;
 438
 439         for (i = 0; i < nb_ops; i++) {
 440                 curr_c_op = ops[i];
 441
 442                 /* Set status as enqueued (not processed yet) by default. */
 443                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 444
 445                 curr_sess = snow3g_get_session(qp, curr_c_op);
 446                 if (unlikely(curr_sess == NULL ||
 447                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 448                         curr_c_op->status =
 449                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 450                         break;
 451                 }
 452
 453                 /* If length/offset is at bit-level, process this buffer alone. */
 454                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 455                                 || ((curr_c_op->sym->cipher.data.offset
 456                                         % BYTE_LEN) != 0)) {
 457                         /* Process the ops of the previous session. */
 458                         if (prev_sess != NULL) {
 459                                 processed_ops = process_ops(c_ops, prev_sess,
 460                                 qp, burst_size, &enqueued_ops);
 461                                 if (processed_ops < burst_size) {
 462                                         burst_size = 0;
 463                                         break;
 464                                 }
 465
 466                                 burst_size = 0;
 467                                 prev_sess = NULL;
 468                         }
 469
 470                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 471                                                         qp, &enqueued_ops);
 472                         if (processed_ops != 1)
 473                                 break;
 474
 475                         continue;
 476                 }
 477
 478                 /* Batch ops that share the same session. */
 479                 if (prev_sess == NULL) {
 480                         prev_sess = curr_sess;
 481                         c_ops[burst_size++] = curr_c_op;
 482                 } else if (curr_sess == prev_sess) {
 483                         c_ops[burst_size++] = curr_c_op;
 484                         /*
 485                          * When there are enough ops to process in a batch,
 486                          * process them, and start a new batch.
 487                          */
 488                         if (burst_size == SNOW3G_MAX_BURST) {
 489                                 processed_ops = process_ops(c_ops, prev_sess,
 490                                                 qp, burst_size, &enqueued_ops);
 491                                 if (processed_ops < burst_size) {
 492                                         burst_size = 0;
 493                                         break;
 494                                 }
 495
 496                                 burst_size = 0;
 497                                 prev_sess = NULL;
 498                         }
 499                 } else {
 500                         /*
 501                          * Different session, process the ops
 502                          * of the previous session.
 503                          */
 504                         processed_ops = process_ops(c_ops, prev_sess,
 505                                         qp, burst_size, &enqueued_ops);
 506                         if (processed_ops < burst_size) {
 507                                 burst_size = 0;
 508                                 break;
 509                         }
 510
 511                         burst_size = 0;
 512                         prev_sess = curr_sess;
 513
 514                         c_ops[burst_size++] = curr_c_op;
 515                 }
 516         }
 517
 518         if (burst_size != 0) {
 519                 /* Process the crypto ops of the last session. */
 520                 processed_ops = process_ops(c_ops, prev_sess,
 521                                 qp, burst_size, &enqueued_ops);
 522         }
 523
 524         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 525         return enqueued_ops;
 526 }
 527
 528 static uint16_t
 529 snow3g_pmd_dequeue_burst(void *queue_pair,
 530                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 531 {
 532         struct snow3g_qp *qp = queue_pair;
 533
 534         unsigned nb_dequeued;
 535
 536         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 537                         (void **)c_ops, nb_ops, NULL);
 538         qp->qp_stats.dequeued_count += nb_dequeued;
 539
 540         return nb_dequeued;
 541 }
 542
 543 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 544
 545 static int
 546 cryptodev_snow3g_create(const char *name,
 547                         struct rte_vdev_device *vdev,
 548                         struct rte_crypto_vdev_init_params *init_params)
 549 {
 550         struct rte_cryptodev *dev;
 551         struct snow3g_private *internals;
 552         uint64_t cpu_flags = 0;
 553
 554         if (init_params->name[0] == '\0')
 555                 snprintf(init_params->name, sizeof(init_params->name),
 556                                 "%s", name);
 557
 558         /* Check CPU for supported vector instruction set */
 559         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
 560                 cpu_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 561         else {
 562                 SNOW3G_LOG_ERR("Vector instructions are not supported by CPU");
 563                 return -EFAULT;
 564         }
 565
 566         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 567                         sizeof(struct snow3g_private), init_params->socket_id,
 568                         vdev);
 569         if (dev == NULL) {
 570                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 571                 goto init_error;
 572         }
 573
 574         dev->dev_type = RTE_CRYPTODEV_SNOW3G_PMD;
 575         dev->dev_ops = rte_snow3g_pmd_ops;
 576
 577         /* Register RX/TX burst functions for data path. */
 578         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 579         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 580
 581         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 582                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 583                         cpu_flags;
 584
 585         internals = dev->data->dev_private;
 586
 587         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 588         internals->max_nb_sessions = init_params->max_nb_sessions;
 589
 590         return 0;
 591 init_error:
 592         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 593                         init_params->name);
 594
 595         cryptodev_snow3g_remove(vdev);
 596         return -EFAULT;
 597 }
 598
 599 static int
 600 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 601 {
 602         struct rte_crypto_vdev_init_params init_params = {
 603                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 604                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 605                 rte_socket_id(),
 606                 {0}
 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_vdev_parse_init_params(&init_params, input_args);
 617
 618         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 619                         init_params.socket_id);
 620         if (init_params.name[0] != '\0')
 621                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 622                         init_params.name);
 623         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 624                         init_params.max_nb_queue_pairs);
 625         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 626                         init_params.max_nb_sessions);
 627
 628         return cryptodev_snow3g_create(name, vdev, &init_params);
 629 }
 630
 631 static int
 632 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 633 {
 634         const char *name;
 635
 636         name = rte_vdev_device_name(vdev);
 637         if (name == NULL)
 638                 return -EINVAL;
 639
 640         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 641                         " on numa socket %u\n",
 642                         name, rte_socket_id());
 643
 644         return 0;
 645 }
 646
 647 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 648         .probe = cryptodev_snow3g_probe,
 649         .remove = cryptodev_snow3g_remove
 650 };
 651
 652 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 653 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 654 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 655         "max_nb_queue_pairs=<int> "
 656         "max_nb_sessions=<int> "
 657         "socket_id=<int>");