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_MAX_BURST 8
  47 #define BYTE_LEN 8
  48
  49 static uint8_t cryptodev_driver_id;
  50
  51 /** Get xform chain order. */
  52 static enum snow3g_operation
  53 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  54 {
  55         if (xform == NULL)
  56                 return SNOW3G_OP_NOT_SUPPORTED;
  57
  58         if (xform->next)
  59                 if (xform->next->next != NULL)
  60                         return SNOW3G_OP_NOT_SUPPORTED;
  61
  62         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  63                 if (xform->next == NULL)
  64                         return SNOW3G_OP_ONLY_AUTH;
  65                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  66                         return SNOW3G_OP_AUTH_CIPHER;
  67                 else
  68                         return SNOW3G_OP_NOT_SUPPORTED;
  69         }
  70
  71         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  72                 if (xform->next == NULL)
  73                         return SNOW3G_OP_ONLY_CIPHER;
  74                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  75                         return SNOW3G_OP_CIPHER_AUTH;
  76                 else
  77                         return SNOW3G_OP_NOT_SUPPORTED;
  78         }
  79
  80         return SNOW3G_OP_NOT_SUPPORTED;
  81 }
  82
  83
  84 /** Parse crypto xform chain and set private session parameters. */
  85 int
  86 snow3g_set_session_parameters(struct snow3g_session *sess,
  87                 const struct rte_crypto_sym_xform *xform)
  88 {
  89         const struct rte_crypto_sym_xform *auth_xform = NULL;
  90         const struct rte_crypto_sym_xform *cipher_xform = NULL;
  91         enum snow3g_operation mode;
  92
  93         /* Select Crypto operation - hash then cipher / cipher then hash */
  94         mode = snow3g_get_mode(xform);
  95
  96         switch (mode) {
  97         case SNOW3G_OP_CIPHER_AUTH:
  98                 auth_xform = xform->next;
  99
 100                 /* Fall-through */
 101         case SNOW3G_OP_ONLY_CIPHER:
 102                 cipher_xform = xform;
 103                 break;
 104         case SNOW3G_OP_AUTH_CIPHER:
 105                 cipher_xform = xform->next;
 106                 /* Fall-through */
 107         case SNOW3G_OP_ONLY_AUTH:
 108                 auth_xform = xform;
 109                 break;
 110         case SNOW3G_OP_NOT_SUPPORTED:
 111         default:
 112                 SNOW3G_LOG_ERR("Unsupported operation chain order parameter");
 113                 return -ENOTSUP;
 114         }
 115
 116         if (cipher_xform) {
 117                 /* Only SNOW 3G UEA2 supported */
 118                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
 119                         return -ENOTSUP;
 120
 121                 if (cipher_xform->cipher.iv.length != SNOW3G_IV_LENGTH) {
 122                         SNOW3G_LOG_ERR("Wrong IV length");
 123                         return -EINVAL;
 124                 }
 125                 sess->cipher_iv_offset = cipher_xform->cipher.iv.offset;
 126
 127                 /* Initialize key */
 128                 sso_snow3g_init_key_sched(cipher_xform->cipher.key.data,
 129                                 &sess->pKeySched_cipher);
 130         }
 131
 132         if (auth_xform) {
 133                 /* Only SNOW 3G UIA2 supported */
 134                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 135                         return -ENOTSUP;
 136
 137                 if (auth_xform->auth.digest_length != SNOW3G_DIGEST_LENGTH) {
 138                         SNOW3G_LOG_ERR("Wrong digest length");
 139                         return -EINVAL;
 140                 }
 141
 142                 sess->auth_op = auth_xform->auth.op;
 143
 144                 if (auth_xform->auth.iv.length != SNOW3G_IV_LENGTH) {
 145                         SNOW3G_LOG_ERR("Wrong IV length");
 146                         return -EINVAL;
 147                 }
 148                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 149
 150                 /* Initialize key */
 151                 sso_snow3g_init_key_sched(auth_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 = NULL;
 166
 167         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 168                 if (likely(op->sym->session != NULL))
 169                         sess = (struct snow3g_session *)
 170                                         get_session_private_data(
 171                                         op->sym->session,
 172                                         cryptodev_driver_id);
 173         } else {
 174                 void *_sess = NULL;
 175                 void *_sess_private_data = NULL;
 176
 177                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 178                         return NULL;
 179
 180                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
 181                         return NULL;
 182
 183                 sess = (struct snow3g_session *)_sess_private_data;
 184
 185                 if (unlikely(snow3g_set_session_parameters(sess,
 186                                 op->sym->xform) != 0)) {
 187                         rte_mempool_put(qp->sess_mp, _sess);
 188                         rte_mempool_put(qp->sess_mp, _sess_private_data);
 189                         sess = NULL;
 190                 }
 191                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 192                 set_session_private_data(op->sym->session, cryptodev_driver_id,
 193                         _sess_private_data);
 194         }
 195
 196         if (unlikely(sess == NULL))
 197                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 198
 199
 200         return sess;
 201 }
 202
 203 /** Encrypt/decrypt mbufs with same cipher key. */
 204 static uint8_t
 205 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 206                 struct snow3g_session *session,
 207                 uint8_t num_ops)
 208 {
 209         unsigned i;
 210         uint8_t processed_ops = 0;
 211         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 212         uint8_t *iv[SNOW3G_MAX_BURST];
 213         uint32_t num_bytes[SNOW3G_MAX_BURST];
 214
 215         for (i = 0; i < num_ops; i++) {
 216                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 217                                 (ops[i]->sym->cipher.data.offset >> 3);
 218                 dst[i] = ops[i]->sym->m_dst ?
 219                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 220                                 (ops[i]->sym->cipher.data.offset >> 3) :
 221                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 222                                 (ops[i]->sym->cipher.data.offset >> 3);
 223                 iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 224                                 session->cipher_iv_offset);
 225                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 226
 227                 processed_ops++;
 228         }
 229
 230         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, iv, src, dst,
 231                         num_bytes, processed_ops);
 232
 233         return processed_ops;
 234 }
 235
 236 /** Encrypt/decrypt mbuf (bit level function). */
 237 static uint8_t
 238 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 239                 struct snow3g_session *session)
 240 {
 241         uint8_t *src, *dst;
 242         uint8_t *iv;
 243         uint32_t length_in_bits, offset_in_bits;
 244
 245         offset_in_bits = op->sym->cipher.data.offset;
 246         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 247         if (op->sym->m_dst == NULL) {
 248                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 249                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 250                 return 0;
 251         }
 252         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 253         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 254                                 session->cipher_iv_offset);
 255         length_in_bits = op->sym->cipher.data.length;
 256
 257         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, iv,
 258                         src, dst, length_in_bits, offset_in_bits);
 259
 260         return 1;
 261 }
 262
 263 /** Generate/verify hash from mbufs with same hash key. */
 264 static int
 265 process_snow3g_hash_op(struct snow3g_qp *qp, struct rte_crypto_op **ops,
 266                 struct snow3g_session *session,
 267                 uint8_t num_ops)
 268 {
 269         unsigned i;
 270         uint8_t processed_ops = 0;
 271         uint8_t *src, *dst;
 272         uint32_t length_in_bits;
 273         uint8_t *iv;
 274
 275         for (i = 0; i < num_ops; i++) {
 276                 /* Data must be byte aligned */
 277                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 278                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 279                         SNOW3G_LOG_ERR("Offset");
 280                         break;
 281                 }
 282
 283                 length_in_bits = ops[i]->sym->auth.data.length;
 284
 285                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 286                                 (ops[i]->sym->auth.data.offset >> 3);
 287                 iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
 288                                 session->auth_iv_offset);
 289
 290                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 291                         dst = qp->temp_digest;
 292
 293                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 294                                         iv, src,
 295                                         length_in_bits, dst);
 296                         /* Verify digest. */
 297                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 298                                         SNOW3G_DIGEST_LENGTH) != 0)
 299                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 300                 } else  {
 301                         dst = ops[i]->sym->auth.digest.data;
 302
 303                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 304                                         iv, src,
 305                                         length_in_bits, dst);
 306                 }
 307                 processed_ops++;
 308         }
 309
 310         return processed_ops;
 311 }
 312
 313 /** Process a batch of crypto ops which shares the same session. */
 314 static int
 315 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 316                 struct snow3g_qp *qp, uint8_t num_ops,
 317                 uint16_t *accumulated_enqueued_ops)
 318 {
 319         unsigned i;
 320         unsigned enqueued_ops, processed_ops;
 321
 322 #ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
 323         for (i = 0; i < num_ops; i++) {
 324                 if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
 325                                 (ops[i]->sym->m_dst != NULL &&
 326                                 !rte_pktmbuf_is_contiguous(
 327                                                 ops[i]->sym->m_dst))) {
 328                         SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
 329                                 "op (%p) provides noncontiguous mbuf as "
 330                                 "source/destination buffer.\n", ops[i]);
 331                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 332                         return 0;
 333                 }
 334         }
 335 #endif
 336
 337         switch (session->op) {
 338         case SNOW3G_OP_ONLY_CIPHER:
 339                 processed_ops = process_snow3g_cipher_op(ops,
 340                                 session, num_ops);
 341                 break;
 342         case SNOW3G_OP_ONLY_AUTH:
 343                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 344                                 num_ops);
 345                 break;
 346         case SNOW3G_OP_CIPHER_AUTH:
 347                 processed_ops = process_snow3g_cipher_op(ops, session,
 348                                 num_ops);
 349                 process_snow3g_hash_op(qp, ops, session, processed_ops);
 350                 break;
 351         case SNOW3G_OP_AUTH_CIPHER:
 352                 processed_ops = process_snow3g_hash_op(qp, ops, session,
 353                                 num_ops);
 354                 process_snow3g_cipher_op(ops, session, processed_ops);
 355                 break;
 356         default:
 357                 /* Operation not supported. */
 358                 processed_ops = 0;
 359         }
 360
 361         for (i = 0; i < num_ops; i++) {
 362                 /*
 363                  * If there was no error/authentication failure,
 364                  * change status to successful.
 365                  */
 366                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 367                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 368                 /* Free session if a session-less crypto op. */
 369                 if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 370                         memset(session, 0, sizeof(struct snow3g_session));
 371                         memset(ops[i]->sym->session, 0,
 372                                         rte_cryptodev_get_header_session_size());
 373                         rte_mempool_put(qp->sess_mp, session);
 374                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 375                         ops[i]->sym->session = NULL;
 376                 }
 377         }
 378
 379         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 380                         (void **)ops, processed_ops, NULL);
 381         qp->qp_stats.enqueued_count += enqueued_ops;
 382         *accumulated_enqueued_ops += enqueued_ops;
 383
 384         return enqueued_ops;
 385 }
 386
 387 /** Process a crypto op with length/offset in bits. */
 388 static int
 389 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 390                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 391 {
 392         unsigned enqueued_op, processed_op;
 393
 394         switch (session->op) {
 395         case SNOW3G_OP_ONLY_CIPHER:
 396                 processed_op = process_snow3g_cipher_op_bit(op,
 397                                 session);
 398                 break;
 399         case SNOW3G_OP_ONLY_AUTH:
 400                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 401                 break;
 402         case SNOW3G_OP_CIPHER_AUTH:
 403                 processed_op = process_snow3g_cipher_op_bit(op, session);
 404                 if (processed_op == 1)
 405                         process_snow3g_hash_op(qp, &op, session, 1);
 406                 break;
 407         case SNOW3G_OP_AUTH_CIPHER:
 408                 processed_op = process_snow3g_hash_op(qp, &op, session, 1);
 409                 if (processed_op == 1)
 410                         process_snow3g_cipher_op_bit(op, session);
 411                 break;
 412         default:
 413                 /* Operation not supported. */
 414                 processed_op = 0;
 415         }
 416
 417         /*
 418          * If there was no error/authentication failure,
 419          * change status to successful.
 420          */
 421         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 422                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 423
 424         /* Free session if a session-less crypto op. */
 425         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 426                 memset(op->sym->session, 0, sizeof(struct snow3g_session));
 427                 rte_cryptodev_sym_session_free(op->sym->session);
 428                 op->sym->session = NULL;
 429         }
 430
 431         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 432                         (void **)&op, processed_op, NULL);
 433         qp->qp_stats.enqueued_count += enqueued_op;
 434         *accumulated_enqueued_ops += enqueued_op;
 435
 436         return enqueued_op;
 437 }
 438
 439 static uint16_t
 440 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 441                 uint16_t nb_ops)
 442 {
 443         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 444         struct rte_crypto_op *curr_c_op;
 445
 446         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 447         struct snow3g_qp *qp = queue_pair;
 448         unsigned i;
 449         uint8_t burst_size = 0;
 450         uint16_t enqueued_ops = 0;
 451         uint8_t processed_ops;
 452
 453         for (i = 0; i < nb_ops; i++) {
 454                 curr_c_op = ops[i];
 455
 456                 /* Set status as enqueued (not processed yet) by default. */
 457                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 458
 459                 curr_sess = snow3g_get_session(qp, curr_c_op);
 460                 if (unlikely(curr_sess == NULL ||
 461                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 462                         curr_c_op->status =
 463                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 464                         break;
 465                 }
 466
 467                 /* If length/offset is at bit-level, process this buffer alone. */
 468                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 469                                 || ((curr_c_op->sym->cipher.data.offset
 470                                         % BYTE_LEN) != 0)) {
 471                         /* Process the ops of the previous session. */
 472                         if (prev_sess != NULL) {
 473                                 processed_ops = process_ops(c_ops, prev_sess,
 474                                 qp, burst_size, &enqueued_ops);
 475                                 if (processed_ops < burst_size) {
 476                                         burst_size = 0;
 477                                         break;
 478                                 }
 479
 480                                 burst_size = 0;
 481                                 prev_sess = NULL;
 482                         }
 483
 484                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 485                                                         qp, &enqueued_ops);
 486                         if (processed_ops != 1)
 487                                 break;
 488
 489                         continue;
 490                 }
 491
 492                 /* Batch ops that share the same session. */
 493                 if (prev_sess == NULL) {
 494                         prev_sess = curr_sess;
 495                         c_ops[burst_size++] = curr_c_op;
 496                 } else if (curr_sess == prev_sess) {
 497                         c_ops[burst_size++] = curr_c_op;
 498                         /*
 499                          * When there are enough ops to process in a batch,
 500                          * process them, and start a new batch.
 501                          */
 502                         if (burst_size == SNOW3G_MAX_BURST) {
 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 = NULL;
 512                         }
 513                 } else {
 514                         /*
 515                          * Different session, process the ops
 516                          * of the previous session.
 517                          */
 518                         processed_ops = process_ops(c_ops, prev_sess,
 519                                         qp, burst_size, &enqueued_ops);
 520                         if (processed_ops < burst_size) {
 521                                 burst_size = 0;
 522                                 break;
 523                         }
 524
 525                         burst_size = 0;
 526                         prev_sess = curr_sess;
 527
 528                         c_ops[burst_size++] = curr_c_op;
 529                 }
 530         }
 531
 532         if (burst_size != 0) {
 533                 /* Process the crypto ops of the last session. */
 534                 processed_ops = process_ops(c_ops, prev_sess,
 535                                 qp, burst_size, &enqueued_ops);
 536         }
 537
 538         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 539         return enqueued_ops;
 540 }
 541
 542 static uint16_t
 543 snow3g_pmd_dequeue_burst(void *queue_pair,
 544                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 545 {
 546         struct snow3g_qp *qp = queue_pair;
 547
 548         unsigned nb_dequeued;
 549
 550         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 551                         (void **)c_ops, nb_ops, NULL);
 552         qp->qp_stats.dequeued_count += nb_dequeued;
 553
 554         return nb_dequeued;
 555 }
 556
 557 static int cryptodev_snow3g_remove(struct rte_vdev_device *vdev);
 558
 559 static int
 560 cryptodev_snow3g_create(const char *name,
 561                         struct rte_vdev_device *vdev,
 562                         struct rte_crypto_vdev_init_params *init_params)
 563 {
 564         struct rte_cryptodev *dev;
 565         struct snow3g_private *internals;
 566         uint64_t cpu_flags = RTE_CRYPTODEV_FF_CPU_SSE;
 567
 568         if (init_params->name[0] == '\0')
 569                 snprintf(init_params->name, sizeof(init_params->name),
 570                                 "%s", name);
 571
 572         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 573                         sizeof(struct snow3g_private), init_params->socket_id,
 574                         vdev);
 575         if (dev == NULL) {
 576                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 577                 goto init_error;
 578         }
 579
 580         dev->driver_id = cryptodev_driver_id;
 581         dev->dev_ops = rte_snow3g_pmd_ops;
 582
 583         /* Register RX/TX burst functions for data path. */
 584         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 585         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 586
 587         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 588                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 589                         cpu_flags;
 590
 591         internals = dev->data->dev_private;
 592
 593         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 594         internals->max_nb_sessions = init_params->max_nb_sessions;
 595
 596         return 0;
 597 init_error:
 598         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed",
 599                         init_params->name);
 600
 601         cryptodev_snow3g_remove(vdev);
 602         return -EFAULT;
 603 }
 604
 605 static int
 606 cryptodev_snow3g_probe(struct rte_vdev_device *vdev)
 607 {
 608         struct rte_crypto_vdev_init_params init_params = {
 609                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 610                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 611                 rte_socket_id(),
 612                 {0}
 613         };
 614         const char *name;
 615         const char *input_args;
 616
 617         name = rte_vdev_device_name(vdev);
 618         if (name == NULL)
 619                 return -EINVAL;
 620         input_args = rte_vdev_device_args(vdev);
 621
 622         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 623
 624         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 625                         init_params.socket_id);
 626         if (init_params.name[0] != '\0')
 627                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 628                         init_params.name);
 629         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 630                         init_params.max_nb_queue_pairs);
 631         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 632                         init_params.max_nb_sessions);
 633
 634         return cryptodev_snow3g_create(name, vdev, &init_params);
 635 }
 636
 637 static int
 638 cryptodev_snow3g_remove(struct rte_vdev_device *vdev)
 639 {
 640         const char *name;
 641
 642         name = rte_vdev_device_name(vdev);
 643         if (name == NULL)
 644                 return -EINVAL;
 645
 646         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 647                         " on numa socket %u\n",
 648                         name, rte_socket_id());
 649
 650         return 0;
 651 }
 652
 653 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 654         .probe = cryptodev_snow3g_probe,
 655         .remove = cryptodev_snow3g_remove
 656 };
 657
 658 static struct cryptodev_driver snow3g_crypto_drv;
 659
 660 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 661 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 662 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 663         "max_nb_queue_pairs=<int> "
 664         "max_nb_sessions=<int> "
 665         "socket_id=<int>");
 666 RTE_PMD_REGISTER_CRYPTO_DRIVER(snow3g_crypto_drv, cryptodev_snow3g_pmd_drv,
 667                 cryptodev_driver_id);