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_dev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cpuflags.h>
  41 #include <rte_kvargs.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 /**
  51  * Global static parameter used to create a unique name for each SNOW 3G
  52  * crypto device.
  53  */
  54 static unsigned unique_name_id;
  55
  56 static inline int
  57 create_unique_device_name(char *name, size_t size)
  58 {
  59         int ret;
  60
  61         if (name == NULL)
  62                 return -EINVAL;
  63
  64         ret = snprintf(name, size, "%s_%u", CRYPTODEV_NAME_SNOW3G_PMD,
  65                         unique_name_id++);
  66         if (ret < 0)
  67                 return ret;
  68         return 0;
  69 }
  70
  71 /** Get xform chain order. */
  72 static enum snow3g_operation
  73 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  74 {
  75         if (xform == NULL)
  76                 return SNOW3G_OP_NOT_SUPPORTED;
  77
  78         if (xform->next)
  79                 if (xform->next->next != NULL)
  80                         return SNOW3G_OP_NOT_SUPPORTED;
  81
  82         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  83                 if (xform->next == NULL)
  84                         return SNOW3G_OP_ONLY_AUTH;
  85                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  86                         return SNOW3G_OP_AUTH_CIPHER;
  87                 else
  88                         return SNOW3G_OP_NOT_SUPPORTED;
  89         }
  90
  91         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  92                 if (xform->next == NULL)
  93                         return SNOW3G_OP_ONLY_CIPHER;
  94                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  95                         return SNOW3G_OP_CIPHER_AUTH;
  96                 else
  97                         return SNOW3G_OP_NOT_SUPPORTED;
  98         }
  99
 100         return SNOW3G_OP_NOT_SUPPORTED;
 101 }
 102
 103
 104 /** Parse crypto xform chain and set private session parameters. */
 105 int
 106 snow3g_set_session_parameters(struct snow3g_session *sess,
 107                 const struct rte_crypto_sym_xform *xform)
 108 {
 109         const struct rte_crypto_sym_xform *auth_xform = NULL;
 110         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 111         int mode;
 112
 113         /* Select Crypto operation - hash then cipher / cipher then hash */
 114         mode = snow3g_get_mode(xform);
 115
 116         switch (mode) {
 117         case SNOW3G_OP_CIPHER_AUTH:
 118                 auth_xform = xform->next;
 119
 120                 /* Fall-through */
 121         case SNOW3G_OP_ONLY_CIPHER:
 122                 cipher_xform = xform;
 123                 break;
 124         case SNOW3G_OP_AUTH_CIPHER:
 125                 cipher_xform = xform->next;
 126                 /* Fall-through */
 127         case SNOW3G_OP_ONLY_AUTH:
 128                 auth_xform = xform;
 129         }
 130
 131         if (mode == SNOW3G_OP_NOT_SUPPORTED) {
 132                 SNOW3G_LOG_ERR("Unsupported operation chain order parameter");
 133                 return -EINVAL;
 134         }
 135
 136         if (cipher_xform) {
 137                 /* Only SNOW 3G UEA2 supported */
 138                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
 139                         return -EINVAL;
 140                 /* Initialize key */
 141                 sso_snow3g_init_key_sched(xform->cipher.key.data,
 142                                 &sess->pKeySched_cipher);
 143         }
 144
 145         if (auth_xform) {
 146                 /* Only SNOW 3G UIA2 supported */
 147                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 148                         return -EINVAL;
 149                 sess->auth_op = auth_xform->auth.op;
 150                 /* Initialize key */
 151                 sso_snow3g_init_key_sched(xform->auth.key.data,
 152                                 &sess->pKeySched_hash);
 153         }
 154
 155
 156         sess->op = mode;
 157
 158         return 0;
 159 }
 160
 161 /** Get SNOW 3G session. */
 162 static struct snow3g_session *
 163 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 164 {
 165         struct snow3g_session *sess;
 166
 167         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
 168                 if (unlikely(op->sym->session->dev_type !=
 169                                 RTE_CRYPTODEV_SNOW3G_PMD))
 170                         return NULL;
 171
 172                 sess = (struct snow3g_session *)op->sym->session->_private;
 173         } else  {
 174                 struct rte_cryptodev_session *c_sess = NULL;
 175
 176                 if (rte_mempool_get(qp->sess_mp, (void **)&c_sess))
 177                         return NULL;
 178
 179                 sess = (struct snow3g_session *)c_sess->_private;
 180
 181                 if (unlikely(snow3g_set_session_parameters(sess,
 182                                 op->sym->xform) != 0))
 183                         return NULL;
 184         }
 185
 186         return sess;
 187 }
 188
 189 /** Encrypt/decrypt mbufs with same cipher key. */
 190 static uint8_t
 191 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 192                 struct snow3g_session *session,
 193                 uint8_t num_ops)
 194 {
 195         unsigned i;
 196         uint8_t processed_ops = 0;
 197         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 198         uint8_t *IV[SNOW3G_MAX_BURST];
 199         uint32_t num_bytes[SNOW3G_MAX_BURST];
 200
 201         for (i = 0; i < num_ops; i++) {
 202                 /* Sanity checks. */
 203                 if (unlikely(ops[i]->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 204                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 205                         SNOW3G_LOG_ERR("iv");
 206                         break;
 207                 }
 208
 209                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 210                                 (ops[i]->sym->cipher.data.offset >> 3);
 211                 dst[i] = ops[i]->sym->m_dst ?
 212                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 213                                 (ops[i]->sym->cipher.data.offset >> 3) :
 214                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 215                                 (ops[i]->sym->cipher.data.offset >> 3);
 216                 IV[i] = ops[i]->sym->cipher.iv.data;
 217                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 218
 219                 processed_ops++;
 220         }
 221
 222         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, IV, src, dst,
 223                         num_bytes, processed_ops);
 224
 225         return processed_ops;
 226 }
 227
 228 /** Encrypt/decrypt mbuf (bit level function). */
 229 static uint8_t
 230 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 231                 struct snow3g_session *session)
 232 {
 233         uint8_t *src, *dst;
 234         uint8_t *IV;
 235         uint32_t length_in_bits, offset_in_bits;
 236
 237         /* Sanity checks. */
 238         if (unlikely(op->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 239                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 240                 SNOW3G_LOG_ERR("iv");
 241                 return 0;
 242         }
 243
 244         offset_in_bits = op->sym->cipher.data.offset;
 245         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 246         if (op->sym->m_dst == NULL) {
 247                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 248                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 249                 return 0;
 250         }
 251         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 252         IV = op->sym->cipher.iv.data;
 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 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
 272         for (i = 0; i < num_ops; i++) {
 273                 if (unlikely(ops[i]->sym->auth.aad.length != SNOW3G_IV_LENGTH)) {
 274                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 275                         SNOW3G_LOG_ERR("aad");
 276                         break;
 277                 }
 278
 279                 if (unlikely(ops[i]->sym->auth.digest.length != SNOW3G_DIGEST_LENGTH)) {
 280                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 281                         SNOW3G_LOG_ERR("digest");
 282                         break;
 283                 }
 284
 285                 /* Data must be byte aligned */
 286                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 287                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 288                         SNOW3G_LOG_ERR("Offset");
 289                         break;
 290                 }
 291
 292                 length_in_bits = ops[i]->sym->auth.data.length;
 293
 294                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 295                                 (ops[i]->sym->auth.data.offset >> 3);
 296
 297                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 298                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 299                                         ops[i]->sym->auth.digest.length);
 300
 301                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 302                                         ops[i]->sym->auth.aad.data, src,
 303                                         length_in_bits, dst);
 304                         /* Verify digest. */
 305                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 306                                         ops[i]->sym->auth.digest.length) != 0)
 307                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 308
 309                         /* Trim area used for digest from mbuf. */
 310                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 311                                         ops[i]->sym->auth.digest.length);
 312                 } else  {
 313                         dst = ops[i]->sym->auth.digest.data;
 314
 315                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 316                                         ops[i]->sym->auth.aad.data, src,
 317                                         length_in_bits, dst);
 318                 }
 319                 processed_ops++;
 320         }
 321
 322         return processed_ops;
 323 }
 324
 325 /** Process a batch of crypto ops which shares the same session. */
 326 static int
 327 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 328                 struct snow3g_qp *qp, uint8_t num_ops,
 329                 uint16_t *accumulated_enqueued_ops)
 330 {
 331         unsigned i;
 332         unsigned enqueued_ops, processed_ops;
 333
 334         switch (session->op) {
 335         case SNOW3G_OP_ONLY_CIPHER:
 336                 processed_ops = process_snow3g_cipher_op(ops,
 337                                 session, num_ops);
 338                 break;
 339         case SNOW3G_OP_ONLY_AUTH:
 340                 processed_ops = process_snow3g_hash_op(ops, session,
 341                                 num_ops);
 342                 break;
 343         case SNOW3G_OP_CIPHER_AUTH:
 344                 processed_ops = process_snow3g_cipher_op(ops, session,
 345                                 num_ops);
 346                 process_snow3g_hash_op(ops, session, processed_ops);
 347                 break;
 348         case SNOW3G_OP_AUTH_CIPHER:
 349                 processed_ops = process_snow3g_hash_op(ops, session,
 350                                 num_ops);
 351                 process_snow3g_cipher_op(ops, session, processed_ops);
 352                 break;
 353         default:
 354                 /* Operation not supported. */
 355                 processed_ops = 0;
 356         }
 357
 358         for (i = 0; i < num_ops; i++) {
 359                 /*
 360                  * If there was no error/authentication failure,
 361                  * change status to successful.
 362                  */
 363                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 364                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 365                 /* Free session if a session-less crypto op. */
 366                 if (ops[i]->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 367                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 368                         ops[i]->sym->session = NULL;
 369                 }
 370         }
 371
 372         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 373                         (void **)ops, processed_ops);
 374         qp->qp_stats.enqueued_count += enqueued_ops;
 375         *accumulated_enqueued_ops += enqueued_ops;
 376
 377         return enqueued_ops;
 378 }
 379
 380 /** Process a crypto op with length/offset in bits. */
 381 static int
 382 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 383                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 384 {
 385         unsigned enqueued_op, processed_op;
 386
 387         switch (session->op) {
 388         case SNOW3G_OP_ONLY_CIPHER:
 389                 processed_op = process_snow3g_cipher_op_bit(op,
 390                                 session);
 391                 break;
 392         case SNOW3G_OP_ONLY_AUTH:
 393                 processed_op = process_snow3g_hash_op(&op, session, 1);
 394                 break;
 395         case SNOW3G_OP_CIPHER_AUTH:
 396                 processed_op = process_snow3g_cipher_op_bit(op, session);
 397                 if (processed_op == 1)
 398                         process_snow3g_hash_op(&op, session, 1);
 399                 break;
 400         case SNOW3G_OP_AUTH_CIPHER:
 401                 processed_op = process_snow3g_hash_op(&op, session, 1);
 402                 if (processed_op == 1)
 403                         process_snow3g_cipher_op_bit(op, session);
 404                 break;
 405         default:
 406                 /* Operation not supported. */
 407                 processed_op = 0;
 408         }
 409
 410         /*
 411          * If there was no error/authentication failure,
 412          * change status to successful.
 413          */
 414         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 415                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 416
 417         /* Free session if a session-less crypto op. */
 418         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 419                 rte_mempool_put(qp->sess_mp, op->sym->session);
 420                 op->sym->session = NULL;
 421         }
 422
 423         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 424                         (void **)&op, processed_op);
 425         qp->qp_stats.enqueued_count += enqueued_op;
 426         *accumulated_enqueued_ops += enqueued_op;
 427
 428         return enqueued_op;
 429 }
 430
 431 static uint16_t
 432 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 433                 uint16_t nb_ops)
 434 {
 435         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 436         struct rte_crypto_op *curr_c_op;
 437
 438         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 439         struct snow3g_qp *qp = queue_pair;
 440         unsigned i;
 441         uint8_t burst_size = 0;
 442         uint16_t enqueued_ops = 0;
 443         uint8_t processed_ops;
 444
 445         for (i = 0; i < nb_ops; i++) {
 446                 curr_c_op = ops[i];
 447
 448                 /* Set status as enqueued (not processed yet) by default. */
 449                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 450
 451                 curr_sess = snow3g_get_session(qp, curr_c_op);
 452                 if (unlikely(curr_sess == NULL ||
 453                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 454                         curr_c_op->status =
 455                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 456                         break;
 457                 }
 458
 459                 /* If length/offset is at bit-level, process this buffer alone. */
 460                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 461                                 || ((curr_c_op->sym->cipher.data.offset
 462                                         % BYTE_LEN) != 0)) {
 463                         /* Process the ops of the previous session. */
 464                         if (prev_sess != NULL) {
 465                                 processed_ops = process_ops(c_ops, prev_sess,
 466                                 qp, burst_size, &enqueued_ops);
 467                                 if (processed_ops < burst_size) {
 468                                         burst_size = 0;
 469                                         break;
 470                                 }
 471
 472                                 burst_size = 0;
 473                                 prev_sess = NULL;
 474                         }
 475
 476                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 477                                                         qp, &enqueued_ops);
 478                         if (processed_ops != 1)
 479                                 break;
 480
 481                         continue;
 482                 }
 483
 484                 /* Batch ops that share the same session. */
 485                 if (prev_sess == NULL) {
 486                         prev_sess = curr_sess;
 487                         c_ops[burst_size++] = curr_c_op;
 488                 } else if (curr_sess == prev_sess) {
 489                         c_ops[burst_size++] = curr_c_op;
 490                         /*
 491                          * When there are enough ops to process in a batch,
 492                          * process them, and start a new batch.
 493                          */
 494                         if (burst_size == SNOW3G_MAX_BURST) {
 495                                 processed_ops = process_ops(c_ops, prev_sess,
 496                                                 qp, burst_size, &enqueued_ops);
 497                                 if (processed_ops < burst_size) {
 498                                         burst_size = 0;
 499                                         break;
 500                                 }
 501
 502                                 burst_size = 0;
 503                                 prev_sess = NULL;
 504                         }
 505                 } else {
 506                         /*
 507                          * Different session, process the ops
 508                          * of the previous session.
 509                          */
 510                         processed_ops = process_ops(c_ops, prev_sess,
 511                                         qp, burst_size, &enqueued_ops);
 512                         if (processed_ops < burst_size) {
 513                                 burst_size = 0;
 514                                 break;
 515                         }
 516
 517                         burst_size = 0;
 518                         prev_sess = curr_sess;
 519
 520                         c_ops[burst_size++] = curr_c_op;
 521                 }
 522         }
 523
 524         if (burst_size != 0) {
 525                 /* Process the crypto ops of the last session. */
 526                 processed_ops = process_ops(c_ops, prev_sess,
 527                                 qp, burst_size, &enqueued_ops);
 528         }
 529
 530         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 531         return enqueued_ops;
 532 }
 533
 534 static uint16_t
 535 snow3g_pmd_dequeue_burst(void *queue_pair,
 536                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 537 {
 538         struct snow3g_qp *qp = queue_pair;
 539
 540         unsigned nb_dequeued;
 541
 542         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 543                         (void **)c_ops, nb_ops);
 544         qp->qp_stats.dequeued_count += nb_dequeued;
 545
 546         return nb_dequeued;
 547 }
 548
 549 static int cryptodev_snow3g_uninit(const char *name);
 550
 551 static int
 552 cryptodev_snow3g_create(const char *name,
 553                 struct rte_crypto_vdev_init_params *init_params)
 554 {
 555         struct rte_cryptodev *dev;
 556         char crypto_dev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 557         struct snow3g_private *internals;
 558
 559         /* Create a unique device name. */
 560         if (create_unique_device_name(crypto_dev_name,
 561                         RTE_CRYPTODEV_NAME_MAX_LEN) != 0) {
 562                 SNOW3G_LOG_ERR("failed to create unique cryptodev name");
 563                 return -EINVAL;
 564         }
 565
 566         dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name,
 567                         sizeof(struct snow3g_private), init_params->socket_id);
 568         if (dev == NULL) {
 569                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 570                 goto init_error;
 571         }
 572
 573         dev->dev_type = RTE_CRYPTODEV_SNOW3G_PMD;
 574         dev->dev_ops = rte_snow3g_pmd_ops;
 575
 576         /* Register RX/TX burst functions for data path. */
 577         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 578         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 579
 580         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 581                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING;
 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", name);
 591
 592         cryptodev_snow3g_uninit(crypto_dev_name);
 593         return -EFAULT;
 594 }
 595
 596 static int
 597 cryptodev_snow3g_init(const char *name,
 598                 const char *input_args)
 599 {
 600         struct rte_crypto_vdev_init_params init_params = {
 601                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 602                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 603                 rte_socket_id()
 604         };
 605
 606         rte_cryptodev_parse_vdev_init_params(&init_params, input_args);
 607
 608         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 609                         init_params.socket_id);
 610         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 611                         init_params.max_nb_queue_pairs);
 612         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 613                         init_params.max_nb_sessions);
 614
 615         return cryptodev_snow3g_create(name, &init_params);
 616 }
 617
 618 static int
 619 cryptodev_snow3g_uninit(const char *name)
 620 {
 621         if (name == NULL)
 622                 return -EINVAL;
 623
 624         RTE_LOG(INFO, PMD, "Closing SNOW3G crypto device %s"
 625                         " on numa socket %u\n",
 626                         name, rte_socket_id());
 627
 628         return 0;
 629 }
 630
 631 static struct rte_driver cryptodev_snow3g_pmd_drv = {
 632         .name = CRYPTODEV_NAME_SNOW3G_PMD,
 633         .type = PMD_VDEV,
 634         .init = cryptodev_snow3g_init,
 635         .uninit = cryptodev_snow3g_uninit
 636 };
 637
 638 PMD_REGISTER_DRIVER(cryptodev_snow3g_pmd_drv);