drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2015-2017 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_hexdump.h>
  35 #include <rte_cryptodev.h>
  36 #include <rte_cryptodev_pmd.h>
  37 #include <rte_cryptodev_vdev.h>
  38 #include <rte_vdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cpuflags.h>
  41
  42 #include "rte_aesni_mb_pmd_private.h"
  43
  44 static uint8_t cryptodev_driver_id;
  45
  46 typedef void (*hash_one_block_t)(const void *data, void *digest);
  47 typedef void (*aes_keyexp_t)(const void *key, void *enc_exp_keys, void *dec_exp_keys);
  48
  49 /**
  50  * Calculate the authentication pre-computes
  51  *
  52  * @param one_block_hash        Function pointer to calculate digest on ipad/opad
  53  * @param ipad                  Inner pad output byte array
  54  * @param opad                  Outer pad output byte array
  55  * @param hkey                  Authentication key
  56  * @param hkey_len              Authentication key length
  57  * @param blocksize             Block size of selected hash algo
  58  */
  59 static void
  60 calculate_auth_precomputes(hash_one_block_t one_block_hash,
  61                 uint8_t *ipad, uint8_t *opad,
  62                 uint8_t *hkey, uint16_t hkey_len,
  63                 uint16_t blocksize)
  64 {
  65         unsigned i, length;
  66
  67         uint8_t ipad_buf[blocksize] __rte_aligned(16);
  68         uint8_t opad_buf[blocksize] __rte_aligned(16);
  69
  70         /* Setup inner and outer pads */
  71         memset(ipad_buf, HMAC_IPAD_VALUE, blocksize);
  72         memset(opad_buf, HMAC_OPAD_VALUE, blocksize);
  73
  74         /* XOR hash key with inner and outer pads */
  75         length = hkey_len > blocksize ? blocksize : hkey_len;
  76
  77         for (i = 0; i < length; i++) {
  78                 ipad_buf[i] ^= hkey[i];
  79                 opad_buf[i] ^= hkey[i];
  80         }
  81
  82         /* Compute partial hashes */
  83         (*one_block_hash)(ipad_buf, ipad);
  84         (*one_block_hash)(opad_buf, opad);
  85
  86         /* Clean up stack */
  87         memset(ipad_buf, 0, blocksize);
  88         memset(opad_buf, 0, blocksize);
  89 }
  90
  91 /** Get xform chain order */
  92 static enum aesni_mb_operation
  93 aesni_mb_get_chain_order(const struct rte_crypto_sym_xform *xform)
  94 {
  95         if (xform == NULL)
  96                 return AESNI_MB_OP_NOT_SUPPORTED;
  97
  98         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  99                 if (xform->next == NULL)
 100                         return AESNI_MB_OP_CIPHER_ONLY;
 101                 if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
 102                         return AESNI_MB_OP_CIPHER_HASH;
 103         }
 104
 105         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
 106                 if (xform->next == NULL)
 107                         return AESNI_MB_OP_HASH_ONLY;
 108                 if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
 109                         return AESNI_MB_OP_HASH_CIPHER;
 110         }
 111
 112         return AESNI_MB_OP_NOT_SUPPORTED;
 113 }
 114
 115 /** Set session authentication parameters */
 116 static int
 117 aesni_mb_set_session_auth_parameters(const struct aesni_mb_op_fns *mb_ops,
 118                 struct aesni_mb_session *sess,
 119                 const struct rte_crypto_sym_xform *xform)
 120 {
 121         hash_one_block_t hash_oneblock_fn;
 122
 123         if (xform == NULL) {
 124                 sess->auth.algo = NULL_HASH;
 125                 return 0;
 126         }
 127
 128         if (xform->type != RTE_CRYPTO_SYM_XFORM_AUTH) {
 129                 MB_LOG_ERR("Crypto xform struct not of type auth");
 130                 return -1;
 131         }
 132
 133         /* Select auth generate/verify */
 134         sess->auth.operation = xform->auth.op;
 135
 136         /* Set Authentication Parameters */
 137         if (xform->auth.algo == RTE_CRYPTO_AUTH_AES_XCBC_MAC) {
 138                 sess->auth.algo = AES_XCBC;
 139                 (*mb_ops->aux.keyexp.aes_xcbc)(xform->auth.key.data,
 140                                 sess->auth.xcbc.k1_expanded,
 141                                 sess->auth.xcbc.k2, sess->auth.xcbc.k3);
 142                 return 0;
 143         }
 144
 145         switch (xform->auth.algo) {
 146         case RTE_CRYPTO_AUTH_MD5_HMAC:
 147                 sess->auth.algo = MD5;
 148                 hash_oneblock_fn = mb_ops->aux.one_block.md5;
 149                 break;
 150         case RTE_CRYPTO_AUTH_SHA1_HMAC:
 151                 sess->auth.algo = SHA1;
 152                 hash_oneblock_fn = mb_ops->aux.one_block.sha1;
 153                 break;
 154         case RTE_CRYPTO_AUTH_SHA224_HMAC:
 155                 sess->auth.algo = SHA_224;
 156                 hash_oneblock_fn = mb_ops->aux.one_block.sha224;
 157                 break;
 158         case RTE_CRYPTO_AUTH_SHA256_HMAC:
 159                 sess->auth.algo = SHA_256;
 160                 hash_oneblock_fn = mb_ops->aux.one_block.sha256;
 161                 break;
 162         case RTE_CRYPTO_AUTH_SHA384_HMAC:
 163                 sess->auth.algo = SHA_384;
 164                 hash_oneblock_fn = mb_ops->aux.one_block.sha384;
 165                 break;
 166         case RTE_CRYPTO_AUTH_SHA512_HMAC:
 167                 sess->auth.algo = SHA_512;
 168                 hash_oneblock_fn = mb_ops->aux.one_block.sha512;
 169                 break;
 170         default:
 171                 MB_LOG_ERR("Unsupported authentication algorithm selection");
 172                 return -1;
 173         }
 174
 175         /* Calculate Authentication precomputes */
 176         calculate_auth_precomputes(hash_oneblock_fn,
 177                         sess->auth.pads.inner, sess->auth.pads.outer,
 178                         xform->auth.key.data,
 179                         xform->auth.key.length,
 180                         get_auth_algo_blocksize(sess->auth.algo));
 181
 182         return 0;
 183 }
 184
 185 /** Set session cipher parameters */
 186 static int
 187 aesni_mb_set_session_cipher_parameters(const struct aesni_mb_op_fns *mb_ops,
 188                 struct aesni_mb_session *sess,
 189                 const struct rte_crypto_sym_xform *xform)
 190 {
 191         aes_keyexp_t aes_keyexp_fn;
 192
 193         if (xform == NULL) {
 194                 sess->cipher.mode = NULL_CIPHER;
 195                 return 0;
 196         }
 197
 198         if (xform->type != RTE_CRYPTO_SYM_XFORM_CIPHER) {
 199                 MB_LOG_ERR("Crypto xform struct not of type cipher");
 200                 return -1;
 201         }
 202
 203         /* Select cipher direction */
 204         switch (xform->cipher.op) {
 205         case RTE_CRYPTO_CIPHER_OP_ENCRYPT:
 206                 sess->cipher.direction = ENCRYPT;
 207                 break;
 208         case RTE_CRYPTO_CIPHER_OP_DECRYPT:
 209                 sess->cipher.direction = DECRYPT;
 210                 break;
 211         default:
 212                 MB_LOG_ERR("Unsupported cipher operation parameter");
 213                 return -1;
 214         }
 215
 216         /* Select cipher mode */
 217         switch (xform->cipher.algo) {
 218         case RTE_CRYPTO_CIPHER_AES_CBC:
 219                 sess->cipher.mode = CBC;
 220                 break;
 221         case RTE_CRYPTO_CIPHER_AES_CTR:
 222                 sess->cipher.mode = CNTR;
 223                 break;
 224         case RTE_CRYPTO_CIPHER_AES_DOCSISBPI:
 225                 sess->cipher.mode = DOCSIS_SEC_BPI;
 226                 break;
 227         default:
 228                 MB_LOG_ERR("Unsupported cipher mode parameter");
 229                 return -1;
 230         }
 231
 232         /* Check key length and choose key expansion function */
 233         switch (xform->cipher.key.length) {
 234         case AES_128_BYTES:
 235                 sess->cipher.key_length_in_bytes = AES_128_BYTES;
 236                 aes_keyexp_fn = mb_ops->aux.keyexp.aes128;
 237                 break;
 238         case AES_192_BYTES:
 239                 sess->cipher.key_length_in_bytes = AES_192_BYTES;
 240                 aes_keyexp_fn = mb_ops->aux.keyexp.aes192;
 241                 break;
 242         case AES_256_BYTES:
 243                 sess->cipher.key_length_in_bytes = AES_256_BYTES;
 244                 aes_keyexp_fn = mb_ops->aux.keyexp.aes256;
 245                 break;
 246         default:
 247                 MB_LOG_ERR("Unsupported cipher key length");
 248                 return -1;
 249         }
 250
 251         /* Set IV parameters */
 252         sess->iv.offset = xform->cipher.iv.offset;
 253         sess->iv.length = xform->cipher.iv.length;
 254
 255         /* Expanded cipher keys */
 256         (*aes_keyexp_fn)(xform->cipher.key.data,
 257                         sess->cipher.expanded_aes_keys.encode,
 258                         sess->cipher.expanded_aes_keys.decode);
 259
 260         return 0;
 261 }
 262
 263 /** Parse crypto xform chain and set private session parameters */
 264 int
 265 aesni_mb_set_session_parameters(const struct aesni_mb_op_fns *mb_ops,
 266                 struct aesni_mb_session *sess,
 267                 const struct rte_crypto_sym_xform *xform)
 268 {
 269         const struct rte_crypto_sym_xform *auth_xform = NULL;
 270         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 271
 272         /* Select Crypto operation - hash then cipher / cipher then hash */
 273         switch (aesni_mb_get_chain_order(xform)) {
 274         case AESNI_MB_OP_HASH_CIPHER:
 275                 sess->chain_order = HASH_CIPHER;
 276                 auth_xform = xform;
 277                 cipher_xform = xform->next;
 278                 break;
 279         case AESNI_MB_OP_CIPHER_HASH:
 280                 sess->chain_order = CIPHER_HASH;
 281                 auth_xform = xform->next;
 282                 cipher_xform = xform;
 283                 break;
 284         case AESNI_MB_OP_HASH_ONLY:
 285                 sess->chain_order = HASH_CIPHER;
 286                 auth_xform = xform;
 287                 cipher_xform = NULL;
 288                 break;
 289         case AESNI_MB_OP_CIPHER_ONLY:
 290                 /*
 291                  * Multi buffer library operates only at two modes,
 292                  * CIPHER_HASH and HASH_CIPHER. When doing ciphering only,
 293                  * chain order depends on cipher operation: encryption is always
 294                  * the first operation and decryption the last one.
 295                  */
 296                 if (xform->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
 297                         sess->chain_order = CIPHER_HASH;
 298                 else
 299                         sess->chain_order = HASH_CIPHER;
 300                 auth_xform = NULL;
 301                 cipher_xform = xform;
 302                 break;
 303         case AESNI_MB_OP_NOT_SUPPORTED:
 304         default:
 305                 MB_LOG_ERR("Unsupported operation chain order parameter");
 306                 return -1;
 307         }
 308
 309         /* Default IV length = 0 */
 310         sess->iv.length = 0;
 311
 312         if (aesni_mb_set_session_auth_parameters(mb_ops, sess, auth_xform)) {
 313                 MB_LOG_ERR("Invalid/unsupported authentication parameters");
 314                 return -1;
 315         }
 316
 317         if (aesni_mb_set_session_cipher_parameters(mb_ops, sess,
 318                         cipher_xform)) {
 319                 MB_LOG_ERR("Invalid/unsupported cipher parameters");
 320                 return -1;
 321         }
 322         return 0;
 323 }
 324
 325 /**
 326  * burst enqueue, place crypto operations on ingress queue for processing.
 327  *
 328  * @param __qp         Queue Pair to process
 329  * @param ops          Crypto operations for processing
 330  * @param nb_ops       Number of crypto operations for processing
 331  *
 332  * @return
 333  * - Number of crypto operations enqueued
 334  */
 335 static uint16_t
 336 aesni_mb_pmd_enqueue_burst(void *__qp, struct rte_crypto_op **ops,
 337                 uint16_t nb_ops)
 338 {
 339         struct aesni_mb_qp *qp = __qp;
 340
 341         unsigned int nb_enqueued;
 342
 343         nb_enqueued = rte_ring_enqueue_burst(qp->ingress_queue,
 344                         (void **)ops, nb_ops, NULL);
 345
 346         qp->stats.enqueued_count += nb_enqueued;
 347
 348         return nb_enqueued;
 349 }
 350
 351 /** Get multi buffer session */
 352 static inline struct aesni_mb_session *
 353 get_session(struct aesni_mb_qp *qp, struct rte_crypto_op *op)
 354 {
 355         struct aesni_mb_session *sess = NULL;
 356
 357         if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION)
 358                 sess = (struct aesni_mb_session *)op->sym->session->_private;
 359         else  {
 360                 void *_sess = NULL;
 361
 362                 if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
 363                         return NULL;
 364
 365                 sess = (struct aesni_mb_session *)
 366                         ((struct rte_cryptodev_sym_session *)_sess)->_private;
 367
 368                 if (unlikely(aesni_mb_set_session_parameters(qp->op_fns,
 369                                 sess, op->sym->xform) != 0)) {
 370                         rte_mempool_put(qp->sess_mp, _sess);
 371                         sess = NULL;
 372                 }
 373                 op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
 374         }
 375
 376         return sess;
 377 }
 378
 379 /**
 380  * Process a crypto operation and complete a JOB_AES_HMAC job structure for
 381  * submission to the multi buffer library for processing.
 382  *
 383  * @param       qp      queue pair
 384  * @param       job     JOB_AES_HMAC structure to fill
 385  * @param       m       mbuf to process
 386  *
 387  * @return
 388  * - Completed JOB_AES_HMAC structure pointer on success
 389  * - NULL pointer if completion of JOB_AES_HMAC structure isn't possible
 390  */
 391 static inline int
 392 set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 393                 struct rte_crypto_op *op)
 394 {
 395         struct rte_mbuf *m_src = op->sym->m_src, *m_dst;
 396         struct aesni_mb_session *session;
 397         uint16_t m_offset = 0;
 398
 399         session = get_session(qp, op);
 400         if (session == NULL) {
 401                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 402                 return -1;
 403         }
 404         op->status = RTE_CRYPTO_OP_STATUS_ENQUEUED;
 405
 406         /* Set crypto operation */
 407         job->chain_order = session->chain_order;
 408
 409         /* Set cipher parameters */
 410         job->cipher_direction = session->cipher.direction;
 411         job->cipher_mode = session->cipher.mode;
 412
 413         job->aes_key_len_in_bytes = session->cipher.key_length_in_bytes;
 414         job->aes_enc_key_expanded = session->cipher.expanded_aes_keys.encode;
 415         job->aes_dec_key_expanded = session->cipher.expanded_aes_keys.decode;
 416
 417
 418         /* Set authentication parameters */
 419         job->hash_alg = session->auth.algo;
 420         if (job->hash_alg == AES_XCBC) {
 421                 job->_k1_expanded = session->auth.xcbc.k1_expanded;
 422                 job->_k2 = session->auth.xcbc.k2;
 423                 job->_k3 = session->auth.xcbc.k3;
 424         } else {
 425                 job->hashed_auth_key_xor_ipad = session->auth.pads.inner;
 426                 job->hashed_auth_key_xor_opad = session->auth.pads.outer;
 427         }
 428
 429         /* Mutable crypto operation parameters */
 430         if (op->sym->m_dst) {
 431                 m_src = m_dst = op->sym->m_dst;
 432
 433                 /* append space for output data to mbuf */
 434                 char *odata = rte_pktmbuf_append(m_dst,
 435                                 rte_pktmbuf_data_len(op->sym->m_src));
 436                 if (odata == NULL) {
 437                         MB_LOG_ERR("failed to allocate space in destination "
 438                                         "mbuf for source data");
 439                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 440                         return -1;
 441                 }
 442
 443                 memcpy(odata, rte_pktmbuf_mtod(op->sym->m_src, void*),
 444                                 rte_pktmbuf_data_len(op->sym->m_src));
 445         } else {
 446                 m_dst = m_src;
 447                 m_offset = op->sym->cipher.data.offset;
 448         }
 449
 450         /* Set digest output location */
 451         if (job->hash_alg != NULL_HASH &&
 452                         session->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
 453                 job->auth_tag_output = (uint8_t *)rte_pktmbuf_append(m_dst,
 454                                 get_digest_byte_length(job->hash_alg));
 455
 456                 if (job->auth_tag_output == NULL) {
 457                         MB_LOG_ERR("failed to allocate space in output mbuf "
 458                                         "for temp digest");
 459                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 460                         return -1;
 461                 }
 462
 463                 memset(job->auth_tag_output, 0,
 464                                 sizeof(get_digest_byte_length(job->hash_alg)));
 465
 466         } else {
 467                 job->auth_tag_output = op->sym->auth.digest.data;
 468         }
 469
 470         /*
 471          * Multi-buffer library current only support returning a truncated
 472          * digest length as specified in the relevant IPsec RFCs
 473          */
 474         job->auth_tag_output_len_in_bytes =
 475                         get_truncated_digest_byte_length(job->hash_alg);
 476
 477         /* Set IV parameters */
 478         job->iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 479                         session->iv.offset);
 480         job->iv_len_in_bytes = session->iv.length;
 481
 482         /* Data  Parameter */
 483         job->src = rte_pktmbuf_mtod(m_src, uint8_t *);
 484         job->dst = rte_pktmbuf_mtod_offset(m_dst, uint8_t *, m_offset);
 485
 486         job->cipher_start_src_offset_in_bytes = op->sym->cipher.data.offset;
 487         job->msg_len_to_cipher_in_bytes = op->sym->cipher.data.length;
 488
 489         job->hash_start_src_offset_in_bytes = op->sym->auth.data.offset;
 490         job->msg_len_to_hash_in_bytes = op->sym->auth.data.length;
 491
 492         /* Set user data to be crypto operation data struct */
 493         job->user_data = op;
 494         job->user_data2 = m_dst;
 495
 496         return 0;
 497 }
 498
 499 static inline void
 500 verify_digest(JOB_AES_HMAC *job, struct rte_crypto_op *op) {
 501         struct rte_mbuf *m_dst = (struct rte_mbuf *)job->user_data2;
 502
 503         /* Verify digest if required */
 504         if (memcmp(job->auth_tag_output, op->sym->auth.digest.data,
 505                         job->auth_tag_output_len_in_bytes) != 0)
 506                 op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 507
 508         /* trim area used for digest from mbuf */
 509         rte_pktmbuf_trim(m_dst, get_digest_byte_length(job->hash_alg));
 510 }
 511
 512 /**
 513  * Process a completed job and return rte_mbuf which job processed
 514  *
 515  * @param job   JOB_AES_HMAC job to process
 516  *
 517  * @return
 518  * - Returns processed mbuf which is trimmed of output digest used in
 519  * verification of supplied digest in the case of a HASH_CIPHER operation
 520  * - Returns NULL on invalid job
 521  */
 522 static inline struct rte_crypto_op *
 523 post_process_mb_job(struct aesni_mb_qp *qp, JOB_AES_HMAC *job)
 524 {
 525         struct rte_crypto_op *op = (struct rte_crypto_op *)job->user_data;
 526
 527         struct aesni_mb_session *sess;
 528
 529         if (unlikely(op->status == RTE_CRYPTO_OP_STATUS_ENQUEUED)) {
 530                 switch (job->status) {
 531                 case STS_COMPLETED:
 532                         op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 533
 534                         if (job->hash_alg != NULL_HASH) {
 535                                 sess = (struct aesni_mb_session *)
 536                                                 op->sym->session->_private;
 537
 538                                 if (sess->auth.operation ==
 539                                                 RTE_CRYPTO_AUTH_OP_VERIFY)
 540                                         verify_digest(job, op);
 541                         }
 542                         break;
 543                 default:
 544                         op->status = RTE_CRYPTO_OP_STATUS_ERROR;
 545                 }
 546         }
 547
 548         /* Free session if a session-less crypto op */
 549         if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
 550                 rte_mempool_put(qp->sess_mp, op->sym->session);
 551                 op->sym->session = NULL;
 552         }
 553
 554         return op;
 555 }
 556
 557 /**
 558  * Process a completed JOB_AES_HMAC job and keep processing jobs until
 559  * get_completed_job return NULL
 560  *
 561  * @param qp            Queue Pair to process
 562  * @param job           JOB_AES_HMAC job
 563  *
 564  * @return
 565  * - Number of processed jobs
 566  */
 567 static unsigned
 568 handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job,
 569                 struct rte_crypto_op **ops, uint16_t nb_ops)
 570 {
 571         struct rte_crypto_op *op = NULL;
 572         unsigned processed_jobs = 0;
 573
 574         while (job != NULL && processed_jobs < nb_ops) {
 575                 op = post_process_mb_job(qp, job);
 576
 577                 if (op) {
 578                         ops[processed_jobs++] = op;
 579                         qp->stats.dequeued_count++;
 580                 } else {
 581                         qp->stats.dequeue_err_count++;
 582                         break;
 583                 }
 584
 585                 job = (*qp->op_fns->job.get_completed_job)(&qp->mb_mgr);
 586         }
 587
 588         return processed_jobs;
 589 }
 590
 591 static inline uint16_t
 592 flush_mb_mgr(struct aesni_mb_qp *qp, struct rte_crypto_op **ops,
 593                 uint16_t nb_ops)
 594 {
 595         int processed_ops = 0;
 596
 597         /* Flush the remaining jobs */
 598         JOB_AES_HMAC *job = (*qp->op_fns->job.flush_job)(&qp->mb_mgr);
 599
 600         if (job)
 601                 processed_ops += handle_completed_jobs(qp, job,
 602                                 &ops[processed_ops], nb_ops - processed_ops);
 603
 604         return processed_ops;
 605 }
 606
 607 static inline JOB_AES_HMAC *
 608 set_job_null_op(JOB_AES_HMAC *job)
 609 {
 610         job->chain_order = HASH_CIPHER;
 611         job->cipher_mode = NULL_CIPHER;
 612         job->hash_alg = NULL_HASH;
 613         job->cipher_direction = DECRYPT;
 614
 615         return job;
 616 }
 617
 618 static uint16_t
 619 aesni_mb_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
 620                 uint16_t nb_ops)
 621 {
 622         struct aesni_mb_qp *qp = queue_pair;
 623
 624         struct rte_crypto_op *op;
 625         JOB_AES_HMAC *job;
 626
 627         int retval, processed_jobs = 0;
 628
 629         do {
 630                 /* Get next operation to process from ingress queue */
 631                 retval = rte_ring_dequeue(qp->ingress_queue, (void **)&op);
 632                 if (retval < 0)
 633                         break;
 634
 635                 /* Get next free mb job struct from mb manager */
 636                 job = (*qp->op_fns->job.get_next)(&qp->mb_mgr);
 637                 if (unlikely(job == NULL)) {
 638                         /* if no free mb job structs we need to flush mb_mgr */
 639                         processed_jobs += flush_mb_mgr(qp,
 640                                         &ops[processed_jobs],
 641                                         (nb_ops - processed_jobs) - 1);
 642
 643                         job = (*qp->op_fns->job.get_next)(&qp->mb_mgr);
 644                 }
 645
 646                 retval = set_mb_job_params(job, qp, op);
 647                 if (unlikely(retval != 0)) {
 648                         qp->stats.dequeue_err_count++;
 649                         set_job_null_op(job);
 650                 }
 651
 652                 /* Submit job to multi-buffer for processing */
 653                 job = (*qp->op_fns->job.submit)(&qp->mb_mgr);
 654
 655                 /*
 656                  * If submit returns a processed job then handle it,
 657                  * before submitting subsequent jobs
 658                  */
 659                 if (job)
 660                         processed_jobs += handle_completed_jobs(qp, job,
 661                                         &ops[processed_jobs],
 662                                         nb_ops - processed_jobs);
 663
 664         } while (processed_jobs < nb_ops);
 665
 666         if (processed_jobs < 1)
 667                 processed_jobs += flush_mb_mgr(qp,
 668                                 &ops[processed_jobs],
 669                                 nb_ops - processed_jobs);
 670
 671         return processed_jobs;
 672 }
 673
 674 static int cryptodev_aesni_mb_remove(struct rte_vdev_device *vdev);
 675
 676 static int
 677 cryptodev_aesni_mb_create(const char *name,
 678                         struct rte_vdev_device *vdev,
 679                         struct rte_crypto_vdev_init_params *init_params)
 680 {
 681         struct rte_cryptodev *dev;
 682         struct aesni_mb_private *internals;
 683         enum aesni_mb_vector_mode vector_mode;
 684
 685         if (init_params->name[0] == '\0')
 686                 snprintf(init_params->name, sizeof(init_params->name),
 687                                 "%s", name);
 688
 689         /* Check CPU for supported vector instruction set */
 690         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
 691                 vector_mode = RTE_AESNI_MB_AVX512;
 692         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
 693                 vector_mode = RTE_AESNI_MB_AVX2;
 694         else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX))
 695                 vector_mode = RTE_AESNI_MB_AVX;
 696         else
 697                 vector_mode = RTE_AESNI_MB_SSE;
 698
 699         dev = rte_cryptodev_vdev_pmd_init(init_params->name,
 700                         sizeof(struct aesni_mb_private), init_params->socket_id,
 701                         vdev);
 702         if (dev == NULL) {
 703                 MB_LOG_ERR("failed to create cryptodev vdev");
 704                 goto init_error;
 705         }
 706
 707         dev->driver_id = cryptodev_driver_id;
 708         dev->dev_ops = rte_aesni_mb_pmd_ops;
 709
 710         /* register rx/tx burst functions for data path */
 711         dev->dequeue_burst = aesni_mb_pmd_dequeue_burst;
 712         dev->enqueue_burst = aesni_mb_pmd_enqueue_burst;
 713
 714         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 715                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 716                         RTE_CRYPTODEV_FF_CPU_AESNI;
 717
 718         switch (vector_mode) {
 719         case RTE_AESNI_MB_SSE:
 720                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 721                 break;
 722         case RTE_AESNI_MB_AVX:
 723                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX;
 724                 break;
 725         case RTE_AESNI_MB_AVX2:
 726                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2;
 727                 break;
 728         case RTE_AESNI_MB_AVX512:
 729                 dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX512;
 730                 break;
 731         default:
 732                 break;
 733         }
 734
 735         /* Set vector instructions mode supported */
 736         internals = dev->data->dev_private;
 737
 738         internals->vector_mode = vector_mode;
 739         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 740         internals->max_nb_sessions = init_params->max_nb_sessions;
 741
 742         return 0;
 743 init_error:
 744         MB_LOG_ERR("driver %s: cryptodev_aesni_create failed",
 745                         init_params->name);
 746
 747         cryptodev_aesni_mb_remove(vdev);
 748         return -EFAULT;
 749 }
 750
 751 static int
 752 cryptodev_aesni_mb_probe(struct rte_vdev_device *vdev)
 753 {
 754         struct rte_crypto_vdev_init_params init_params = {
 755                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 756                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 757                 rte_socket_id(),
 758                 ""
 759         };
 760         const char *name;
 761         const char *input_args;
 762
 763         name = rte_vdev_device_name(vdev);
 764         if (name == NULL)
 765                 return -EINVAL;
 766         input_args = rte_vdev_device_args(vdev);
 767         rte_cryptodev_vdev_parse_init_params(&init_params, input_args);
 768
 769         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 770                         init_params.socket_id);
 771         if (init_params.name[0] != '\0')
 772                 RTE_LOG(INFO, PMD, "  User defined name = %s\n",
 773                         init_params.name);
 774         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 775                         init_params.max_nb_queue_pairs);
 776         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 777                         init_params.max_nb_sessions);
 778
 779         return cryptodev_aesni_mb_create(name, vdev, &init_params);
 780 }
 781
 782 static int
 783 cryptodev_aesni_mb_remove(struct rte_vdev_device *vdev)
 784 {
 785         const char *name;
 786
 787         name = rte_vdev_device_name(vdev);
 788         if (name == NULL)
 789                 return -EINVAL;
 790
 791         RTE_LOG(INFO, PMD, "Closing AESNI crypto device %s on numa socket %u\n",
 792                         name, rte_socket_id());
 793
 794         return 0;
 795 }
 796
 797 static struct rte_vdev_driver cryptodev_aesni_mb_pmd_drv = {
 798         .probe = cryptodev_aesni_mb_probe,
 799         .remove = cryptodev_aesni_mb_remove
 800 };
 801
 802 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_AESNI_MB_PMD, cryptodev_aesni_mb_pmd_drv);
 803 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_AESNI_MB_PMD, cryptodev_aesni_mb_pmd);
 804 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_AESNI_MB_PMD,
 805         "max_nb_queue_pairs=<int> "
 806         "max_nb_sessions=<int> "
 807         "socket_id=<int>");
 808 RTE_PMD_REGISTER_CRYPTO_DRIVER(cryptodev_aesni_mb_pmd_drv, cryptodev_driver_id);