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                 /* 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->sess_type == RTE_CRYPTO_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] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 196                                 ops[i]->sym->cipher.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         /* Sanity checks. */
 218         if (unlikely(op->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 219                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 220                 SNOW3G_LOG_ERR("iv");
 221                 return 0;
 222         }
 223
 224         offset_in_bits = op->sym->cipher.data.offset;
 225         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 226         if (op->sym->m_dst == NULL) {
 227                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 228                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 229                 return 0;
 230         }
 231         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 232         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 233                                 op->sym->cipher.iv.offset);
 234         length_in_bits = op->sym->cipher.data.length;
 235
 236         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 237                         src, dst, length_in_bits, offset_in_bits);
 238
 239         return 1;
 240 }
 241
 242 /** Generate/verify hash from mbufs with same hash key. */
 243 static int
 244 process_snow3g_hash_op(struct rte_crypto_op **ops,
 245                 struct snow3g_session *session,
 246                 uint8_t num_ops)
 247 {
 248         unsigned i;
 249         uint8_t processed_ops = 0;
 250         uint8_t *src, *dst;
 251         uint32_t length_in_bits;
 252
 253         for (i = 0; i < num_ops; i++) {
 254                 if (unlikely(ops[i]->sym->auth.aad.length != SNOW3G_IV_LENGTH)) {
 255                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 256                         SNOW3G_LOG_ERR("aad");
 257                         break;
 258                 }
 259
 260                 if (unlikely(ops[i]->sym->auth.digest.length != SNOW3G_DIGEST_LENGTH)) {
 261                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 262                         SNOW3G_LOG_ERR("digest");
 263                         break;
 264                 }
 265
 266                 /* Data must be byte aligned */
 267                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 268                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 269                         SNOW3G_LOG_ERR("Offset");
 270                         break;
 271                 }
 272
 273                 length_in_bits = ops[i]->sym->auth.data.length;
 274
 275                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 276                                 (ops[i]->sym->auth.data.offset >> 3);
 277
 278                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 279                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 280                                         ops[i]->sym->auth.digest.length);
 281
 282                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 283                                         ops[i]->sym->auth.aad.data, src,
 284                                         length_in_bits, dst);
 285                         /* Verify digest. */
 286                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 287                                         ops[i]->sym->auth.digest.length) != 0)
 288                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 289
 290                         /* Trim area used for digest from mbuf. */
 291                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 292                                         ops[i]->sym->auth.digest.length);
 293                 } else  {
 294                         dst = ops[i]->sym->auth.digest.data;
 295
 296                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 297                                         ops[i]->sym->auth.aad.data, src,
 298                                         length_in_bits, dst);
 299                 }
 300                 processed_ops++;
 301         }
 302
 303         return processed_ops;
 304 }
 305
 306 /** Process a batch of crypto ops which shares the same session. */
 307 static int
 308 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 309                 struct snow3g_qp *qp, uint8_t num_ops,
 310                 uint16_t *accumulated_enqueued_ops)
 311 {
 312         unsigned i;
 313         unsigned enqueued_ops, processed_ops;
 314
 315 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 316         for (i = 0; i < num_ops; i++) {
 317                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 318                                 (ops[i]->sym->m_dst != NULL &&
 319                                 !rte_pktmbuf_is_contiguous(
 320                                                 ops[i]->sym->m_dst))) {
 321                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 322                                 "op (%p) provides noncontiguous mbuf as "
 323                                 "source/destination buffer.\n", ops[i]);
 324                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 325                         return 0;
 326                 }
 327         }
 328 #endif
 329
 330         switch (session->op) {
 331         case SNOW3G_OP_ONLY_CIPHER:
 332                 processed_ops = process_snow3g_cipher_op(ops,
 333                                 session, num_ops);
 334                 break;
 335         case SNOW3G_OP_ONLY_AUTH:
 336                 processed_ops = process_snow3g_hash_op(ops, session,
 337                                 num_ops);
 338                 break;
 339         case SNOW3G_OP_CIPHER_AUTH:
 340                 processed_ops = process_snow3g_cipher_op(ops, session,
 341                                 num_ops);
 342                 process_snow3g_hash_op(ops, session, processed_ops);
 343                 break;
 344         case SNOW3G_OP_AUTH_CIPHER:
 345                 processed_ops = process_snow3g_hash_op(ops, session,
 346                                 num_ops);
 347                 process_snow3g_cipher_op(ops, session, processed_ops);
 348                 break;
 349         default:
 350                 /* Operation not supported. */
 351                 processed_ops = 0;
 352         }
 353
 354         for (i = 0; i < num_ops; i++) {
 355                 /*
 356                  * If there was no error/authentication failure,
 357                  * change status to successful.
 358                  */
 359                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 360                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 361                 /* Free session if a session-less crypto op. */
 362                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 363                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 364                         ops[i]->sym->session = NULL;
 365                 }
 366         }
 367
 368         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 369                         (void **)ops, processed_ops, NULL);
 370         qp->qp_stats.enqueued_count += enqueued_ops;
 371         *accumulated_enqueued_ops += enqueued_ops;
 372
 373         return enqueued_ops;
 374 }
 375
 376 /** Process a crypto op with length/offset in bits. */
 377 static int
 378 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 379                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 380 {
 381         unsigned enqueued_op, processed_op;
 382
 383         switch (session->op) {
 384         case SNOW3G_OP_ONLY_CIPHER:
 385                 processed_op = process_snow3g_cipher_op_bit(op,
 386                                 session);
 387                 break;
 388         case SNOW3G_OP_ONLY_AUTH:
 389                 processed_op = process_snow3g_hash_op(&op, session, 1);
 390                 break;
 391         case SNOW3G_OP_CIPHER_AUTH:
 392                 processed_op = process_snow3g_cipher_op_bit(op, session);
 393                 if (processed_op == 1)
 394                         process_snow3g_hash_op(&op, session, 1);
 395                 break;
 396         case SNOW3G_OP_AUTH_CIPHER:
 397                 processed_op = process_snow3g_hash_op(&op, session, 1);
 398                 if (processed_op == 1)
 399                         process_snow3g_cipher_op_bit(op, session);
 400                 break;
 401         default:
 402                 /* Operation not supported. */
 403                 processed_op = 0;
 404         }
 405
 406         /*
 407          * If there was no error/authentication failure,
 408          * change status to successful.
 409          */
 410         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 411                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 412
 413         /* Free session if a session-less crypto op. */
 414         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 415                 rte_mempool_put(qp->sess_mp, op->sym->session);
 416                 op->sym->session = NULL;
 417         }
 418
 419         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 420                         (void **)&op, processed_op, NULL);
 421         qp->qp_stats.enqueued_count += enqueued_op;
 422         *accumulated_enqueued_ops += enqueued_op;
 423
 424         return enqueued_op;
 425 }
 426
 427 static uint16_t
 428 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 429                 uint16_t nb_ops)
 430 {
 431         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 432         struct rte_crypto_op *curr_c_op;
 433
 434         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 435         struct snow3g_qp *qp = queue_pair;
 436         unsigned i;
 437         uint8_t burst_size = 0;
 438         uint16_t enqueued_ops = 0;
 439         uint8_t processed_ops;
 440
 441         for (i = 0; i < nb_ops; i++) {
 442                 curr_c_op = ops[i];
 443
 444                 /* Set status as enqueued (not processed yet) by default. */
 445                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 446
 447                 curr_sess = snow3g_get_session(qp, curr_c_op);
 448                 if (unlikely(curr_sess == NULL ||
 449                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 450                         curr_c_op->status =
 451                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 452                         break;
 453                 }
 454
 455                 /* If length/offset is at bit-level, process this buffer alone. */
 456                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 457                                 || ((curr_c_op->sym->cipher.data.offset
 458                                         % BYTE_LEN) != 0)) {
 459                         /* Process the ops of the previous session. */
 460                         if (prev_sess != NULL) {
 461                                 processed_ops = process_ops(c_ops, prev_sess,
 462                                 qp, burst_size, &enqueued_ops);
 463                                 if (processed_ops < burst_size) {
 464                                         burst_size = 0;
 465                                         break;
 466                                 }
 467
 468                                 burst_size = 0;
 469                                 prev_sess = NULL;
 470                         }
 471
 472                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 473                                                         qp, &enqueued_ops);
 474                         if (processed_ops != 1)
 475                                 break;
 476
 477                         continue;
 478                 }
 479
 480                 /* Batch ops that share the same session. */
 481                 if (prev_sess == NULL) {
 482                         prev_sess = curr_sess;
 483                         c_ops[burst_size++] = curr_c_op;
 484                 } else if (curr_sess == prev_sess) {
 485                         c_ops[burst_size++] = curr_c_op;
 486                         /*
 487                          * When there are enough ops to process in a batch,
 488                          * process them, and start a new batch.
 489                          */
 490                         if (burst_size == SNOW3G_MAX_BURST) {
 491                                 processed_ops = process_ops(c_ops, prev_sess,
 492                                                 qp, burst_size, &enqueued_ops);
 493                                 if (processed_ops < burst_size) {
 494                                         burst_size = 0;
 495                                         break;
 496                                 }
 497
 498                                 burst_size = 0;
 499                                 prev_sess = NULL;
 500                         }
 501                 } else {
 502                         /*
 503                          * Different session, process the ops
 504                          * of the previous session.
 505                          */
 506                         processed_ops = process_ops(c_ops, prev_sess,
 507                                         qp, burst_size, &enqueued_ops);
 508                         if (processed_ops < burst_size) {
 509                                 burst_size = 0;
 510                                 break;
 511                         }
 512
 513                         burst_size = 0;
 514                         prev_sess = curr_sess;
 515
 516                         c_ops[burst_size++] = curr_c_op;
 517                 }
 518         }
 519
 520         if (burst_size != 0) {
 521                 /* Process the crypto ops of the last session. */
 522                 processed_ops = process_ops(c_ops, prev_sess,
 523                                 qp, burst_size, &enqueued_ops);
 524         }
 525
 526         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 527         return enqueued_ops;
 528 }
 529
 530 static uint16_t
 531 snow3g_pmd_dequeue_burst(void *queue_pair,
 532                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 533 {
 534         struct snow3g_qp *qp = queue_pair;
 535
 536         unsigned nb_dequeued;
 537
 538         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 539                         (void **)c_ops, nb_ops, NULL);
 540         qp->qp_stats.dequeued_count += nb_dequeued;
 541
 542         return nb_dequeued;
 543 }
 544
 545 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 546
 547 static int
 548 cryptodev_snow3g_create(const char *name,
 549                         struct rte_vdev_device *vdev,
 550                         struct rte_crypto_vdev_init_params *init_params)
 551 {
 552         struct rte_cryptodev *dev;
 553         struct snow3g_private *internals;
 554         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 555
 556         if (init_params->name[0] == '\0')
 557                 snprintf(init_params->name, sizeof(init_params->name),
 558                                 "%s", name);
 559
 560         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 561                         sizeof(struct snow3g_private), init_params->socket_id,
 562                         vdev);
 563         if (dev == NULL) {
 564                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 565                 goto init_error;
 566         }
 567
 568         dev->dev_type = RTE_CRYPTODEV_SNOW3G_PMD;
 569         dev->dev_ops = rte_snow3g_pmd_ops;
 570
 571         /* Register RX/TX burst functions for data path. */
 572         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 573         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 574
 575         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 576                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 577                         cpu_flags;
 578
 579         internals = dev->data->dev_private;
 580
 581         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 582         internals->max_nb_sessions = init_params->max_nb_sessions;
 583
 584         return 0;
 585 init_error:
 586         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 587                         init_params->name);
 588
 589         cryptodev_snow3g_remove(vdev);
 590         return -EFAULT;
 591 }
 592
 593 static int
 594 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 595 {
 596         struct rte_crypto_vdev_init_params init_params = {
 597                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 598                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 599                 rte_socket_id(),
 600                 {0}
 601         };
 602         const char *name;
 603         const char *input_args;
 604
 605         name = rte_vdev_device_name(vdev);
 606         if (name == NULL)
 607                 return -EINVAL;
 608         input_args = rte_vdev_device_args(vdev);
 609
 610         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 611
 612         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 613                         init_params.socket_id);
 614         if (init_params.name[0] != '\0')
 615                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 616                         init_params.name);
 617         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 618                         init_params.max_nb_queue_pairs);
 619         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 620                         init_params.max_nb_sessions);
 621
 622         return cryptodev_snow3g_create(name, vdev, &init_params);
 623 }
 624
 625 static int
 626 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 627 {
 628         const char *name;
 629
 630         name = rte_vdev_device_name(vdev);
 631         if (name == NULL)
 632                 return -EINVAL;
 633
 634         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 635                         " on numa socket %u\n",
 636                         name, rte_socket_id());
 637
 638         return 0;
 639 }
 640
 641 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 642         .probe = cryptodev_snow3g_probe,
 643         .remove = cryptodev_snow3g_remove
 644 };
 645
 646 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 647 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 648 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 649         "max_nb_queue_pairs=<int> "
 650         "max_nb_sessions=<int> "
 651         "socket_id=<int>");