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
 120                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
 121                         SNOW3G_LOG_ERR("Wrong IV length");
 122                         return -EINVAL;
 123                 }
 124                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 125
 126                 /* Initialize key */
 127                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
 128                                 &sess->pKeySched_cipher);
 129         }
 130
 131         if (auth_xform) {
 132                 /* Only SNOW 3G UIA2 supported */
 133                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 134                         return -EINVAL;
 135                 sess->auth_op = auth_xform->auth.op;
 136
 137                 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
 138                         SNOW3G_LOG_ERR("Wrong IV length");
 139                         return -EINVAL;
 140                 }
 141                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 142
 143                 /* Initialize key */
 144                 sso_snow3g_init_key_sched(auth_xform->auth.key.data,
 145                                 &sess->pKeySched_hash);
 146         }
 147
 148
 149         sess->op = mode;
 150
 151         return 0;
 152 }
 153
 154 /** Get SNOW 3G session. */
 155 static struct snow3g_session *
 156 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 157 {
 158         struct snow3g_session *sess;
 159
 160         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 161                 if (unlikely(op->sym->session->dev_type !=
 162                                 RTE_CRYPTODEV_SNOW3G_PMD))
 163                         return NULL;
 164
 165                 sess = (struct snow3g_session *)op->sym->session->_private;
 166         } else  {
 167                 struct rte_cryptodev_session *c_sess = NULL;
 168
 169                 if (rte_mempool_get(qp->sess_mp, (void **)&c_sess))
 170                         return NULL;
 171
 172                 sess = (struct snow3g_session *)c_sess->_private;
 173
 174                 if (unlikely(snow3g_set_session_parameters(sess,
 175                                 op->sym->xform) != 0))
 176                         return NULL;
 177         }
 178
 179         return sess;
 180 }
 181
 182 /** Encrypt/decrypt mbufs with same cipher key. */
 183 static uint8_t
 184 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 185                 struct snow3g_session *session,
 186                 uint8_t num_ops)
 187 {
 188         unsigned i;
 189         uint8_t processed_ops = 0;
 190         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 191         uint8_t *iv[SNOW3G_MAX_BURST];
 192         uint32_t num_bytes[SNOW3G_MAX_BURST];
 193
 194         for (i = 0; i < num_ops; i++) {
 195                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 196                                 (ops[i]->sym->cipher.data.offset >> 3);
 197                 dst[i] = ops[i]->sym->m_dst ?
 198                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 199                                 (ops[i]->sym->cipher.data.offset >> 3) :
 200                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 201                                 (ops[i]->sym->cipher.data.offset >> 3);
 202                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 203                                 session->cipher_iv_offset);
 204                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 205
 206                 processed_ops++;
 207         }
 208
 209         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 210                         num_bytes, processed_ops);
 211
 212         return processed_ops;
 213 }
 214
 215 /** Encrypt/decrypt mbuf (bit level function). */
 216 static uint8_t
 217 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 218                 struct snow3g_session *session)
 219 {
 220         uint8_t *src, *dst;
 221         uint8_t *iv;
 222         uint32_t length_in_bits, offset_in_bits;
 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                                 session->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         uint8_t *iv;
 253
 254         for (i = 0; i < num_ops; i++) {
 255                 if (unlikely(ops[i]->sym->auth.digest.length != SNOW3G_DIGEST_LENGTH)) {
 256                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 257                         SNOW3G_LOG_ERR("digest");
 258                         break;
 259                 }
 260
 261                 /* Data must be byte aligned */
 262                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 263                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 264                         SNOW3G_LOG_ERR("Offset");
 265                         break;
 266                 }
 267
 268                 length_in_bits = ops[i]->sym->auth.data.length;
 269
 270                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 271                                 (ops[i]->sym->auth.data.offset >> 3);
 272                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 273                                 session->auth_iv_offset);
 274
 275                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 276                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 277                                         ops[i]->sym->auth.digest.length);
 278
 279                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 280                                         iv, src,
 281                                         length_in_bits, dst);
 282                         /* Verify digest. */
 283                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 284                                         ops[i]->sym->auth.digest.length) != 0)
 285                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 286
 287                         /* Trim area used for digest from mbuf. */
 288                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 289                                         ops[i]->sym->auth.digest.length);
 290                 } else  {
 291                         dst = ops[i]->sym->auth.digest.data;
 292
 293                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 294                                         iv, src,
 295                                         length_in_bits, dst);
 296                 }
 297                 processed_ops++;
 298         }
 299
 300         return processed_ops;
 301 }
 302
 303 /** Process a batch of crypto ops which shares the same session. */
 304 static int
 305 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 306                 struct snow3g_qp *qp, uint8_t num_ops,
 307                 uint16_t *accumulated_enqueued_ops)
 308 {
 309         unsigned i;
 310         unsigned enqueued_ops, processed_ops;
 311
 312 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 313         for (i = 0; i < num_ops; i++) {
 314                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 315                                 (ops[i]->sym->m_dst != NULL &&
 316                                 !rte_pktmbuf_is_contiguous(
 317                                                 ops[i]->sym->m_dst))) {
 318                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 319                                 "op (%p) provides noncontiguous mbuf as "
 320                                 "source/destination buffer.\n", ops[i]);
 321                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 322                         return 0;
 323                 }
 324         }
 325 #endif
 326
 327         switch (session->op) {
 328         case SNOW3G_OP_ONLY_CIPHER:
 329                 processed_ops = process_snow3g_cipher_op(ops,
 330                                 session, num_ops);
 331                 break;
 332         case SNOW3G_OP_ONLY_AUTH:
 333                 processed_ops = process_snow3g_hash_op(ops, session,
 334                                 num_ops);
 335                 break;
 336         case SNOW3G_OP_CIPHER_AUTH:
 337                 processed_ops = process_snow3g_cipher_op(ops, session,
 338                                 num_ops);
 339                 process_snow3g_hash_op(ops, session, processed_ops);
 340                 break;
 341         case SNOW3G_OP_AUTH_CIPHER:
 342                 processed_ops = process_snow3g_hash_op(ops, session,
 343                                 num_ops);
 344                 process_snow3g_cipher_op(ops, session, processed_ops);
 345                 break;
 346         default:
 347                 /* Operation not supported. */
 348                 processed_ops = 0;
 349         }
 350
 351         for (i = 0; i < num_ops; i++) {
 352                 /*
 353                  * If there was no error/authentication failure,
 354                  * change status to successful.
 355                  */
 356                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 357                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 358                 /* Free session if a session-less crypto op. */
 359                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 360                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 361                         ops[i]->sym->session = NULL;
 362                 }
 363         }
 364
 365         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 366                         (void **)ops, processed_ops, NULL);
 367         qp->qp_stats.enqueued_count += enqueued_ops;
 368         *accumulated_enqueued_ops += enqueued_ops;
 369
 370         return enqueued_ops;
 371 }
 372
 373 /** Process a crypto op with length/offset in bits. */
 374 static int
 375 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 376                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 377 {
 378         unsigned enqueued_op, processed_op;
 379
 380         switch (session->op) {
 381         case SNOW3G_OP_ONLY_CIPHER:
 382                 processed_op = process_snow3g_cipher_op_bit(op,
 383                                 session);
 384                 break;
 385         case SNOW3G_OP_ONLY_AUTH:
 386                 processed_op = process_snow3g_hash_op(&op, session, 1);
 387                 break;
 388         case SNOW3G_OP_CIPHER_AUTH:
 389                 processed_op = process_snow3g_cipher_op_bit(op, session);
 390                 if (processed_op == 1)
 391                         process_snow3g_hash_op(&op, session, 1);
 392                 break;
 393         case SNOW3G_OP_AUTH_CIPHER:
 394                 processed_op = process_snow3g_hash_op(&op, session, 1);
 395                 if (processed_op == 1)
 396                         process_snow3g_cipher_op_bit(op, session);
 397                 break;
 398         default:
 399                 /* Operation not supported. */
 400                 processed_op = 0;
 401         }
 402
 403         /*
 404          * If there was no error/authentication failure,
 405          * change status to successful.
 406          */
 407         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 408                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 409
 410         /* Free session if a session-less crypto op. */
 411         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 412                 rte_mempool_put(qp->sess_mp, op->sym->session);
 413                 op->sym->session = NULL;
 414         }
 415
 416         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 417                         (void **)&op, processed_op, NULL);
 418         qp->qp_stats.enqueued_count += enqueued_op;
 419         *accumulated_enqueued_ops += enqueued_op;
 420
 421         return enqueued_op;
 422 }
 423
 424 static uint16_t
 425 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 426                 uint16_t nb_ops)
 427 {
 428         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 429         struct rte_crypto_op *curr_c_op;
 430
 431         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 432         struct snow3g_qp *qp = queue_pair;
 433         unsigned i;
 434         uint8_t burst_size = 0;
 435         uint16_t enqueued_ops = 0;
 436         uint8_t processed_ops;
 437
 438         for (i = 0; i < nb_ops; i++) {
 439                 curr_c_op = ops[i];
 440
 441                 /* Set status as enqueued (not processed yet) by default. */
 442                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 443
 444                 curr_sess = snow3g_get_session(qp, curr_c_op);
 445                 if (unlikely(curr_sess == NULL ||
 446                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 447                         curr_c_op->status =
 448                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 449                         break;
 450                 }
 451
 452                 /* If length/offset is at bit-level, process this buffer alone. */
 453                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 454                                 || ((curr_c_op->sym->cipher.data.offset
 455                                         % BYTE_LEN) != 0)) {
 456                         /* Process the ops of the previous session. */
 457                         if (prev_sess != NULL) {
 458                                 processed_ops = process_ops(c_ops, prev_sess,
 459                                 qp, burst_size, &enqueued_ops);
 460                                 if (processed_ops < burst_size) {
 461                                         burst_size = 0;
 462                                         break;
 463                                 }
 464
 465                                 burst_size = 0;
 466                                 prev_sess = NULL;
 467                         }
 468
 469                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 470                                                         qp, &enqueued_ops);
 471                         if (processed_ops != 1)
 472                                 break;
 473
 474                         continue;
 475                 }
 476
 477                 /* Batch ops that share the same session. */
 478                 if (prev_sess == NULL) {
 479                         prev_sess = curr_sess;
 480                         c_ops[burst_size++] = curr_c_op;
 481                 } else if (curr_sess == prev_sess) {
 482                         c_ops[burst_size++] = curr_c_op;
 483                         /*
 484                          * When there are enough ops to process in a batch,
 485                          * process them, and start a new batch.
 486                          */
 487                         if (burst_size == SNOW3G_MAX_BURST) {
 488                                 processed_ops = process_ops(c_ops, prev_sess,
 489                                                 qp, burst_size, &enqueued_ops);
 490                                 if (processed_ops < burst_size) {
 491                                         burst_size = 0;
 492                                         break;
 493                                 }
 494
 495                                 burst_size = 0;
 496                                 prev_sess = NULL;
 497                         }
 498                 } else {
 499                         /*
 500                          * Different session, process the ops
 501                          * of the previous session.
 502                          */
 503                         processed_ops = process_ops(c_ops, prev_sess,
 504                                         qp, burst_size, &enqueued_ops);
 505                         if (processed_ops < burst_size) {
 506                                 burst_size = 0;
 507                                 break;
 508                         }
 509
 510                         burst_size = 0;
 511                         prev_sess = curr_sess;
 512
 513                         c_ops[burst_size++] = curr_c_op;
 514                 }
 515         }
 516
 517         if (burst_size != 0) {
 518                 /* Process the crypto ops of the last session. */
 519                 processed_ops = process_ops(c_ops, prev_sess,
 520                                 qp, burst_size, &enqueued_ops);
 521         }
 522
 523         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 524         return enqueued_ops;
 525 }
 526
 527 static uint16_t
 528 snow3g_pmd_dequeue_burst(void *queue_pair,
 529                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 530 {
 531         struct snow3g_qp *qp = queue_pair;
 532
 533         unsigned nb_dequeued;
 534
 535         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 536                         (void **)c_ops, nb_ops, NULL);
 537         qp->qp_stats.dequeued_count += nb_dequeued;
 538
 539         return nb_dequeued;
 540 }
 541
 542 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 543
 544 static int
 545 cryptodev_snow3g_create(const char *name,
 546                         struct rte_vdev_device *vdev,
 547                         struct rte_crypto_vdev_init_params *init_params)
 548 {
 549         struct rte_cryptodev *dev;
 550         struct snow3g_private *internals;
 551         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 552
 553         if (init_params->name[0] == '\0')
 554                 snprintf(init_params->name, sizeof(init_params->name),
 555                                 "%s", name);
 556
 557         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 558                         sizeof(struct snow3g_private), init_params->socket_id,
 559                         vdev);
 560         if (dev == NULL) {
 561                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 562                 goto init_error;
 563         }
 564
 565         dev->dev_type = RTE_CRYPTODEV_SNOW3G_PMD;
 566         dev->dev_ops = rte_snow3g_pmd_ops;
 567
 568         /* Register RX/TX burst functions for data path. */
 569         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 570         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 571
 572         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 573                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 574                         cpu_flags;
 575
 576         internals = dev->data->dev_private;
 577
 578         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 579         internals->max_nb_sessions = init_params->max_nb_sessions;
 580
 581         return 0;
 582 init_error:
 583         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 584                         init_params->name);
 585
 586         cryptodev_snow3g_remove(vdev);
 587         return -EFAULT;
 588 }
 589
 590 static int
 591 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 592 {
 593         struct rte_crypto_vdev_init_params init_params = {
 594                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 595                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 596                 rte_socket_id(),
 597                 {0}
 598         };
 599         const char *name;
 600         const char *input_args;
 601
 602         name = rte_vdev_device_name(vdev);
 603         if (name == NULL)
 604                 return -EINVAL;
 605         input_args = rte_vdev_device_args(vdev);
 606
 607         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 608
 609         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 610                         init_params.socket_id);
 611         if (init_params.name[0] != '\0')
 612                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 613                         init_params.name);
 614         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 615                         init_params.max_nb_queue_pairs);
 616         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 617                         init_params.max_nb_sessions);
 618
 619         return cryptodev_snow3g_create(name, vdev, &init_params);
 620 }
 621
 622 static int
 623 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 624 {
 625         const char *name;
 626
 627         name = rte_vdev_device_name(vdev);
 628         if (name == NULL)
 629                 return -EINVAL;
 630
 631         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 632                         " on numa socket %u\n",
 633                         name, rte_socket_id());
 634
 635         return 0;
 636 }
 637
 638 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 639         .probe = cryptodev_snow3g_probe,
 640         .remove = cryptodev_snow3g_remove
 641 };
 642
 643 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 644 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 645 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 646         "max_nb_queue_pairs=<int> "
 647         "max_nb_sessions=<int> "
 648         "socket_id=<int>");