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 -ENOTSUP;
 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 -ENOTSUP;
 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 -ENOTSUP;
 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 = NULL;
 167
 168         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 169                 if (likely(op->sym->session != NULL))
 170                         sess = (struct snow3g_session *)
 171                                         get_session_private_data(
 172                                         op->sym->session,
 173                                         cryptodev_driver_id);
 174         } else {
 175                 void *_sess = NULL;
 176                 void *_sess_private_data = NULL;
 177
 178                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 179                         return NULL;
 180
 181                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 182                         return NULL;
 183
 184                 sess = (struct snow3g_session *)_sess_private_data;
 185
 186                 if (unlikely(snow3g_set_session_parameters(sess,
 187                                 op->sym->xform) != 0)) {
 188                         rte_mempool_put(qp->sess_mp, _sess);
 189                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 190                         sess = NULL;
 191                 }
 192                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 193                 set_session_private_data(op->sym->session, cryptodev_driver_id,
 194                         _sess_private_data);
 195         }
 196
 197         if (unlikely(sess == NULL))
 198                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 199
 200
 201         return sess;
 202 }
 203
 204 /** Encrypt/decrypt mbufs with same cipher key. */
 205 static uint8_t
 206 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 207                 struct snow3g_session *session,
 208                 uint8_t num_ops)
 209 {
 210         unsigned i;
 211         uint8_t processed_ops = 0;
 212         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 213         uint8_t *iv[SNOW3G_MAX_BURST];
 214         uint32_t num_bytes[SNOW3G_MAX_BURST];
 215
 216         for (i = 0; i < num_ops; i++) {
 217                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 218                                 (ops[i]->sym->cipher.data.offset >> 3);
 219                 dst[i] = ops[i]->sym->m_dst ?
 220                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 221                                 (ops[i]->sym->cipher.data.offset >> 3) :
 222                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 223                                 (ops[i]->sym->cipher.data.offset >> 3);
 224                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 225                                 session->cipher_iv_offset);
 226                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 227
 228                 processed_ops++;
 229         }
 230
 231         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 232                         num_bytes, processed_ops);
 233
 234         return processed_ops;
 235 }
 236
 237 /** Encrypt/decrypt mbuf (bit level function). */
 238 static uint8_t
 239 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 240                 struct snow3g_session *session)
 241 {
 242         uint8_t *src, *dst;
 243         uint8_t *iv;
 244         uint32_t length_in_bits, offset_in_bits;
 245
 246         offset_in_bits = op->sym->cipher.data.offset;
 247         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 248         if (op->sym->m_dst == NULL) {
 249                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 250                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 251                 return 0;
 252         }
 253         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 254         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 255                                 session->cipher_iv_offset);
 256         length_in_bits = op->sym->cipher.data.length;
 257
 258         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 259                         src, dst, length_in_bits, offset_in_bits);
 260
 261         return 1;
 262 }
 263
 264 /** Generate/verify hash from mbufs with same hash key. */
 265 static int
 266 process_snow3g_hash_op(struct rte_crypto_op **ops,
 267                 struct snow3g_session *session,
 268                 uint8_t num_ops)
 269 {
 270         unsigned i;
 271         uint8_t processed_ops = 0;
 272         uint8_t *src, *dst;
 273         uint32_t length_in_bits;
 274         uint8_t *iv;
 275
 276         for (i = 0; i < num_ops; i++) {
 277                 /* Data must be byte aligned */
 278                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 279                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 280                         SNOW3G_LOG_ERR("Offset");
 281                         break;
 282                 }
 283
 284                 length_in_bits = ops[i]->sym->auth.data.length;
 285
 286                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 287                                 (ops[i]->sym->auth.data.offset >> 3);
 288                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 289                                 session->auth_iv_offset);
 290
 291                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 292                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 293                                         SNOW3G_DIGEST_LENGTH);
 294
 295                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 296                                         iv, src,
 297                                         length_in_bits, dst);
 298                         /* Verify digest. */
 299                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 300                                         SNOW3G_DIGEST_LENGTH) != 0)
 301                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 302
 303                         /* Trim area used for digest from mbuf. */
 304                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 305                                         SNOW3G_DIGEST_LENGTH);
 306                 } else  {
 307                         dst = ops[i]->sym->auth.digest.data;
 308
 309                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 310                                         iv, src,
 311                                         length_in_bits, dst);
 312                 }
 313                 processed_ops++;
 314         }
 315
 316         return processed_ops;
 317 }
 318
 319 /** Process a batch of crypto ops which shares the same session. */
 320 static int
 321 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 322                 struct snow3g_qp *qp, uint8_t num_ops,
 323                 uint16_t *accumulated_enqueued_ops)
 324 {
 325         unsigned i;
 326         unsigned enqueued_ops, processed_ops;
 327
 328 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 329         for (i = 0; i < num_ops; i++) {
 330                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 331                                 (ops[i]->sym->m_dst != NULL &&
 332                                 !rte_pktmbuf_is_contiguous(
 333                                                 ops[i]->sym->m_dst))) {
 334                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 335                                 "op (%p) provides noncontiguous mbuf as "
 336                                 "source/destination buffer.\n", ops[i]);
 337                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 338                         return 0;
 339                 }
 340         }
 341 #endif
 342
 343         switch (session->op) {
 344         case SNOW3G_OP_ONLY_CIPHER:
 345                 processed_ops = process_snow3g_cipher_op(ops,
 346                                 session, num_ops);
 347                 break;
 348         case SNOW3G_OP_ONLY_AUTH:
 349                 processed_ops = process_snow3g_hash_op(ops, session,
 350                                 num_ops);
 351                 break;
 352         case SNOW3G_OP_CIPHER_AUTH:
 353                 processed_ops = process_snow3g_cipher_op(ops, session,
 354                                 num_ops);
 355                 process_snow3g_hash_op(ops, session, processed_ops);
 356                 break;
 357         case SNOW3G_OP_AUTH_CIPHER:
 358                 processed_ops = process_snow3g_hash_op(ops, session,
 359                                 num_ops);
 360                 process_snow3g_cipher_op(ops, session, processed_ops);
 361                 break;
 362         default:
 363                 /* Operation not supported. */
 364                 processed_ops = 0;
 365         }
 366
 367         for (i = 0; i < num_ops; i++) {
 368                 /*
 369                  * If there was no error/authentication failure,
 370                  * change status to successful.
 371                  */
 372                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 373                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 374                 /* Free session if a session-less crypto op. */
 375                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 376                         memset(session, 0, sizeof(struct snow3g_session));
 377                         memset(ops[i]->sym->session, 0,
 378                                         rte_cryptodev_get_header_session_size());
 379                         rte_mempool_put(qp->sess_mp, session);
 380                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 381                         ops[i]->sym->session = NULL;
 382                 }
 383         }
 384
 385         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 386                         (void **)ops, processed_ops, NULL);
 387         qp->qp_stats.enqueued_count += enqueued_ops;
 388         *accumulated_enqueued_ops += enqueued_ops;
 389
 390         return enqueued_ops;
 391 }
 392
 393 /** Process a crypto op with length/offset in bits. */
 394 static int
 395 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 396                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 397 {
 398         unsigned enqueued_op, processed_op;
 399
 400         switch (session->op) {
 401         case SNOW3G_OP_ONLY_CIPHER:
 402                 processed_op = process_snow3g_cipher_op_bit(op,
 403                                 session);
 404                 break;
 405         case SNOW3G_OP_ONLY_AUTH:
 406                 processed_op = process_snow3g_hash_op(&op, session, 1);
 407                 break;
 408         case SNOW3G_OP_CIPHER_AUTH:
 409                 processed_op = process_snow3g_cipher_op_bit(op, session);
 410                 if (processed_op == 1)
 411                         process_snow3g_hash_op(&op, session, 1);
 412                 break;
 413         case SNOW3G_OP_AUTH_CIPHER:
 414                 processed_op = process_snow3g_hash_op(&op, session, 1);
 415                 if (processed_op == 1)
 416                         process_snow3g_cipher_op_bit(op, session);
 417                 break;
 418         default:
 419                 /* Operation not supported. */
 420                 processed_op = 0;
 421         }
 422
 423         /*
 424          * If there was no error/authentication failure,
 425          * change status to successful.
 426          */
 427         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 428                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 429
 430         /* Free session if a session-less crypto op. */
 431         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 432                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 433                 rte_cryptodev_sym_session_free(op->sym->session);
 434                 op->sym->session = NULL;
 435         }
 436
 437         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 438                         (void **)&op, processed_op, NULL);
 439         qp->qp_stats.enqueued_count += enqueued_op;
 440         *accumulated_enqueued_ops += enqueued_op;
 441
 442         return enqueued_op;
 443 }
 444
 445 static uint16_t
 446 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 447                 uint16_t nb_ops)
 448 {
 449         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 450         struct rte_crypto_op *curr_c_op;
 451
 452         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 453         struct snow3g_qp *qp = queue_pair;
 454         unsigned i;
 455         uint8_t burst_size = 0;
 456         uint16_t enqueued_ops = 0;
 457         uint8_t processed_ops;
 458
 459         for (i = 0; i < nb_ops; i++) {
 460                 curr_c_op = ops[i];
 461
 462                 /* Set status as enqueued (not processed yet) by default. */
 463                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 464
 465                 curr_sess = snow3g_get_session(qp, curr_c_op);
 466                 if (unlikely(curr_sess == NULL ||
 467                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 468                         curr_c_op->status =
 469                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 470                         break;
 471                 }
 472
 473                 /* If length/offset is at bit-level, process this buffer alone. */
 474                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 475                                 || ((curr_c_op->sym->cipher.data.offset
 476                                         % BYTE_LEN) != 0)) {
 477                         /* Process the ops of the previous session. */
 478                         if (prev_sess != NULL) {
 479                                 processed_ops = process_ops(c_ops, prev_sess,
 480                                 qp, burst_size, &enqueued_ops);
 481                                 if (processed_ops < burst_size) {
 482                                         burst_size = 0;
 483                                         break;
 484                                 }
 485
 486                                 burst_size = 0;
 487                                 prev_sess = NULL;
 488                         }
 489
 490                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 491                                                         qp, &enqueued_ops);
 492                         if (processed_ops != 1)
 493                                 break;
 494
 495                         continue;
 496                 }
 497
 498                 /* Batch ops that share the same session. */
 499                 if (prev_sess == NULL) {
 500                         prev_sess = curr_sess;
 501                         c_ops[burst_size++] = curr_c_op;
 502                 } else if (curr_sess == prev_sess) {
 503                         c_ops[burst_size++] = curr_c_op;
 504                         /*
 505                          * When there are enough ops to process in a batch,
 506                          * process them, and start a new batch.
 507                          */
 508                         if (burst_size == SNOW3G_MAX_BURST) {
 509                                 processed_ops = process_ops(c_ops, prev_sess,
 510                                                 qp, burst_size, &enqueued_ops);
 511                                 if (processed_ops < burst_size) {
 512                                         burst_size = 0;
 513                                         break;
 514                                 }
 515
 516                                 burst_size = 0;
 517                                 prev_sess = NULL;
 518                         }
 519                 } else {
 520                         /*
 521                          * Different session, process the ops
 522                          * of the previous session.
 523                          */
 524                         processed_ops = process_ops(c_ops, prev_sess,
 525                                         qp, burst_size, &enqueued_ops);
 526                         if (processed_ops < burst_size) {
 527                                 burst_size = 0;
 528                                 break;
 529                         }
 530
 531                         burst_size = 0;
 532                         prev_sess = curr_sess;
 533
 534                         c_ops[burst_size++] = curr_c_op;
 535                 }
 536         }
 537
 538         if (burst_size != 0) {
 539                 /* Process the crypto ops of the last session. */
 540                 processed_ops = process_ops(c_ops, prev_sess,
 541                                 qp, burst_size, &enqueued_ops);
 542         }
 543
 544         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 545         return enqueued_ops;
 546 }
 547
 548 static uint16_t
 549 snow3g_pmd_dequeue_burst(void *queue_pair,
 550                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 551 {
 552         struct snow3g_qp *qp = queue_pair;
 553
 554         unsigned nb_dequeued;
 555
 556         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 557                         (void **)c_ops, nb_ops, NULL);
 558         qp->qp_stats.dequeued_count += nb_dequeued;
 559
 560         return nb_dequeued;
 561 }
 562
 563 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 564
 565 static int
 566 cryptodev_snow3g_create(const char *name,
 567                         struct rte_vdev_device *vdev,
 568                         struct rte_crypto_vdev_init_params *init_params)
 569 {
 570         struct rte_cryptodev *dev;
 571         struct snow3g_private *internals;
 572         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 573
 574         if (init_params->name[0] == '\0')
 575                 snprintf(init_params->name, sizeof(init_params->name),
 576                                 "%s", name);
 577
 578         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 579                         sizeof(struct snow3g_private), init_params->socket_id,
 580                         vdev);
 581         if (dev == NULL) {
 582                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 583                 goto init_error;
 584         }
 585
 586         dev->driver_id = cryptodev_driver_id;
 587         dev->dev_ops = rte_snow3g_pmd_ops;
 588
 589         /* Register RX/TX burst functions for data path. */
 590         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 591         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 592
 593         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 594                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 595                         cpu_flags;
 596
 597         internals = dev->data->dev_private;
 598
 599         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 600         internals->max_nb_sessions = init_params->max_nb_sessions;
 601
 602         return 0;
 603 init_error:
 604         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 605                         init_params->name);
 606
 607         cryptodev_snow3g_remove(vdev);
 608         return -EFAULT;
 609 }
 610
 611 static int
 612 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 613 {
 614         struct rte_crypto_vdev_init_params init_params = {
 615                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 616                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 617                 rte_socket_id(),
 618                 {0}
 619         };
 620         const char *name;
 621         const char *input_args;
 622
 623         name = rte_vdev_device_name(vdev);
 624         if (name == NULL)
 625                 return -EINVAL;
 626         input_args = rte_vdev_device_args(vdev);
 627
 628         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 629
 630         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 631                         init_params.socket_id);
 632         if (init_params.name[0] != '\0')
 633                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 634                         init_params.name);
 635         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 636                         init_params.max_nb_queue_pairs);
 637         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 638                         init_params.max_nb_sessions);
 639
 640         return cryptodev_snow3g_create(name, vdev, &init_params);
 641 }
 642
 643 static int
 644 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 645 {
 646         const char *name;
 647
 648         name = rte_vdev_device_name(vdev);
 649         if (name == NULL)
 650                 return -EINVAL;
 651
 652         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 653                         " on numa socket %u\n",
 654                         name, rte_socket_id());
 655
 656         return 0;
 657 }
 658
 659 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 660         .probe = cryptodev_snow3g_probe,
 661         .remove = cryptodev_snow3g_remove
 662 };
 663
 664 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 665 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 666 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 667         "max_nb_queue_pairs=<int> "
 668         "max_nb_sessions=<int> "
 669         "socket_id=<int>");
 670 RTE_PMD_REGISTER_CRYPTO_DRIVER(cryptodev_snow3g_pmd_drv, cryptodev_driver_id);