drivers/crypto/qat/qat_sym.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015-2019 Intel Corporation
   3  */
   4
   5 #include <openssl/evp.h>
   6
   7 #include <rte_mempool.h>
   8 #include <rte_mbuf.h>
   9 #include <rte_crypto_sym.h>
  10 #include <rte_bus_pci.h>
  11 #include <rte_byteorder.h>
  12
  13 #include "qat_sym.h"
  14
  15
  16 /** Decrypt a single partial block
  17  *  Depends on openssl libcrypto
  18  *  Uses ECB+XOR to do CFB encryption, same result, more performant
  19  */
  20 static inline int
  21 bpi_cipher_decrypt(uint8_t *src, uint8_t *dst,
  22                 uint8_t *iv, int ivlen, int srclen,
  23                 void *bpi_ctx)
  24 {
  25         EVP_CIPHER_CTX *ctx = (EVP_CIPHER_CTX *)bpi_ctx;
  26         int encrypted_ivlen;
  27         uint8_t encrypted_iv[BPI_MAX_ENCR_IV_LEN];
  28         uint8_t *encr = encrypted_iv;
  29
  30         /* ECB method: encrypt (not decrypt!) the IV, then XOR with plaintext */
  31         if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen, iv, ivlen)
  32                                                                 <= 0)
  33                 goto cipher_decrypt_err;
  34
  35         for (; srclen != 0; --srclen, ++dst, ++src, ++encr)
  36                 *dst = *src ^ *encr;
  37
  38         return 0;
  39
  40 cipher_decrypt_err:
  41         QAT_DP_LOG(ERR, "libcrypto ECB cipher decrypt for BPI IV failed");
  42         return -EINVAL;
  43 }
  44
  45
  46 static inline uint32_t
  47 qat_bpicipher_preprocess(struct qat_sym_session *ctx,
  48                                 struct rte_crypto_op *op)
  49 {
  50         int block_len = qat_cipher_get_block_size(ctx->qat_cipher_alg);
  51         struct rte_crypto_sym_op *sym_op = op->sym;
  52         uint8_t last_block_len = block_len > 0 ?
  53                         sym_op->cipher.data.length % block_len : 0;
  54
  55         if (last_block_len &&
  56                         ctx->qat_dir == ICP_QAT_HW_CIPHER_DECRYPT) {
  57
  58                 /* Decrypt last block */
  59                 uint8_t *last_block, *dst, *iv;
  60                 uint32_t last_block_offset = sym_op->cipher.data.offset +
  61                                 sym_op->cipher.data.length - last_block_len;
  62                 last_block = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_src,
  63                                 uint8_t *, last_block_offset);
  64
  65                 if (unlikely((sym_op->m_dst != NULL)
  66                                 && (sym_op->m_dst != sym_op->m_src)))
  67                         /* out-of-place operation (OOP) */
  68                         dst = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_dst,
  69                                                 uint8_t *, last_block_offset);
  70                 else
  71                         dst = last_block;
  72
  73                 if (last_block_len < sym_op->cipher.data.length)
  74                         /* use previous block ciphertext as IV */
  75                         iv = last_block - block_len;
  76                 else
  77                         /* runt block, i.e. less than one full block */
  78                         iv = rte_crypto_op_ctod_offset(op, uint8_t *,
  79                                         ctx->cipher_iv.offset);
  80
  81 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
  82                 QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: src before pre-process:",
  83                         last_block, last_block_len);
  84                 if (sym_op->m_dst != NULL)
  85                         QAT_DP_HEXDUMP_LOG(DEBUG, "BPI:dst before pre-process:",
  86                         dst, last_block_len);
  87 #endif
  88                 bpi_cipher_decrypt(last_block, dst, iv, block_len,
  89                                 last_block_len, ctx->bpi_ctx);
  90 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
  91                 QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: src after pre-process:",
  92                         last_block, last_block_len);
  93                 if (sym_op->m_dst != NULL)
  94                         QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: dst after pre-process:",
  95                         dst, last_block_len);
  96 #endif
  97         }
  98
  99         return sym_op->cipher.data.length - last_block_len;
 100 }
 101
 102 static inline void
 103 set_cipher_iv(uint16_t iv_length, uint16_t iv_offset,
 104                 struct icp_qat_fw_la_cipher_req_params *cipher_param,
 105                 struct rte_crypto_op *op,
 106                 struct icp_qat_fw_la_bulk_req *qat_req)
 107 {
 108         /* copy IV into request if it fits */
 109         if (iv_length <= sizeof(cipher_param->u.cipher_IV_array)) {
 110                 rte_memcpy(cipher_param->u.cipher_IV_array,
 111                                 rte_crypto_op_ctod_offset(op, uint8_t *,
 112                                         iv_offset),
 113                                 iv_length);
 114         } else {
 115                 ICP_QAT_FW_LA_CIPH_IV_FLD_FLAG_SET(
 116                                 qat_req->comn_hdr.serv_specif_flags,
 117                                 ICP_QAT_FW_CIPH_IV_64BIT_PTR);
 118                 cipher_param->u.s.cipher_IV_ptr =
 119                                 rte_crypto_op_ctophys_offset(op,
 120                                         iv_offset);
 121         }
 122 }
 123
 124 /** Set IV for CCM is special case, 0th byte is set to q-1
 125  *  where q is padding of nonce in 16 byte block
 126  */
 127 static inline void
 128 set_cipher_iv_ccm(uint16_t iv_length, uint16_t iv_offset,
 129                 struct icp_qat_fw_la_cipher_req_params *cipher_param,
 130                 struct rte_crypto_op *op, uint8_t q, uint8_t aad_len_field_sz)
 131 {
 132         rte_memcpy(((uint8_t *)cipher_param->u.cipher_IV_array) +
 133                         ICP_QAT_HW_CCM_NONCE_OFFSET,
 134                         rte_crypto_op_ctod_offset(op, uint8_t *,
 135                                 iv_offset) + ICP_QAT_HW_CCM_NONCE_OFFSET,
 136                         iv_length);
 137         *(uint8_t *)&cipher_param->u.cipher_IV_array[0] =
 138                         q - ICP_QAT_HW_CCM_NONCE_OFFSET;
 139
 140         if (aad_len_field_sz)
 141                 rte_memcpy(&op->sym->aead.aad.data[ICP_QAT_HW_CCM_NONCE_OFFSET],
 142                         rte_crypto_op_ctod_offset(op, uint8_t *,
 143                                 iv_offset) + ICP_QAT_HW_CCM_NONCE_OFFSET,
 144                         iv_length);
 145 }
 146
 147 int
 148 qat_sym_build_request(void *in_op, uint8_t *out_msg,
 149                 void *op_cookie, enum qat_device_gen qat_dev_gen)
 150 {
 151         int ret = 0;
 152         struct qat_sym_session *ctx = NULL;
 153         struct icp_qat_fw_la_cipher_req_params *cipher_param;
 154         struct icp_qat_fw_la_auth_req_params *auth_param;
 155         register struct icp_qat_fw_la_bulk_req *qat_req;
 156         uint8_t do_auth = 0, do_cipher = 0, do_aead = 0;
 157         uint32_t cipher_len = 0, cipher_ofs = 0;
 158         uint32_t auth_len = 0, auth_ofs = 0;
 159         uint32_t min_ofs = 0;
 160         uint64_t src_buf_start = 0, dst_buf_start = 0;
 161         uint64_t auth_data_end = 0;
 162         uint8_t do_sgl = 0;
 163         uint8_t in_place = 1;
 164         int alignment_adjustment = 0;
 165         struct rte_crypto_op *op = (struct rte_crypto_op *)in_op;
 166         struct qat_sym_op_cookie *cookie =
 167                                 (struct qat_sym_op_cookie *)op_cookie;
 168
 169         if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC)) {
 170                 QAT_DP_LOG(ERR, "QAT PMD only supports symmetric crypto "
 171                                 "operation requests, op (%p) is not a "
 172                                 "symmetric operation.", op);
 173                 return -EINVAL;
 174         }
 175
 176         if (unlikely(op->sess_type == RTE_CRYPTO_OP_SESSIONLESS)) {
 177                 QAT_DP_LOG(ERR, "QAT PMD only supports session oriented"
 178                                 " requests, op (%p) is sessionless.", op);
 179                 return -EINVAL;
 180         } else if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 181                 ctx = (struct qat_sym_session *)get_sym_session_private_data(
 182                                 op->sym->session, qat_sym_driver_id);
 183 #ifdef RTE_LIBRTE_SECURITY
 184         } else {
 185                 ctx = (struct qat_sym_session *)get_sec_session_private_data(
 186                                 op->sym->sec_session);
 187                 if (likely(ctx)) {
 188                         if (unlikely(ctx->bpi_ctx == NULL)) {
 189                                 QAT_DP_LOG(ERR, "QAT PMD only supports security"
 190                                                 " operation requests for"
 191                                                 " DOCSIS, op (%p) is not for"
 192                                                 " DOCSIS.", op);
 193                                 return -EINVAL;
 194                         } else if (unlikely(((op->sym->m_dst != NULL) &&
 195                                         (op->sym->m_dst != op->sym->m_src)) ||
 196                                         op->sym->m_src->nb_segs > 1)) {
 197                                 QAT_DP_LOG(ERR, "OOP and/or multi-segment"
 198                                                 " buffers not supported for"
 199                                                 " DOCSIS security.");
 200                                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 201                                 return -EINVAL;
 202                         }
 203                 }
 204 #endif
 205         }
 206
 207         if (unlikely(ctx == NULL)) {
 208                 QAT_DP_LOG(ERR, "Session was not created for this device");
 209                 return -EINVAL;
 210         }
 211
 212         if (unlikely(ctx->min_qat_dev_gen > qat_dev_gen)) {
 213                 QAT_DP_LOG(ERR, "Session alg not supported on this device gen");
 214                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 215                 return -EINVAL;
 216         }
 217
 218         qat_req = (struct icp_qat_fw_la_bulk_req *)out_msg;
 219         rte_mov128((uint8_t *)qat_req, (const uint8_t *)&(ctx->fw_req));
 220         qat_req->comn_mid.opaque_data = (uint64_t)(uintptr_t)op;
 221         cipher_param = (void *)&qat_req->serv_specif_rqpars;
 222         auth_param = (void *)((uint8_t *)cipher_param +
 223                         ICP_QAT_FW_HASH_REQUEST_PARAMETERS_OFFSET);
 224
 225         if (ctx->qat_cmd == ICP_QAT_FW_LA_CMD_HASH_CIPHER ||
 226                         ctx->qat_cmd == ICP_QAT_FW_LA_CMD_CIPHER_HASH) {
 227                 /* AES-GCM or AES-CCM */
 228                 if (ctx->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_GALOIS_128 ||
 229                         ctx->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_GALOIS_64 ||
 230                         (ctx->qat_cipher_alg == ICP_QAT_HW_CIPHER_ALGO_AES128
 231                         && ctx->qat_mode == ICP_QAT_HW_CIPHER_CTR_MODE
 232                         && ctx->qat_hash_alg ==
 233                                         ICP_QAT_HW_AUTH_ALGO_AES_CBC_MAC)) {
 234                         do_aead = 1;
 235                 } else {
 236                         do_auth = 1;
 237                         do_cipher = 1;
 238                 }
 239         } else if (ctx->qat_cmd == ICP_QAT_FW_LA_CMD_AUTH) {
 240                 do_auth = 1;
 241                 do_cipher = 0;
 242         } else if (ctx->qat_cmd == ICP_QAT_FW_LA_CMD_CIPHER) {
 243                 do_auth = 0;
 244                 do_cipher = 1;
 245         }
 246
 247         if (do_cipher) {
 248
 249                 if (ctx->qat_cipher_alg ==
 250                                          ICP_QAT_HW_CIPHER_ALGO_SNOW_3G_UEA2 ||
 251                         ctx->qat_cipher_alg == ICP_QAT_HW_CIPHER_ALGO_KASUMI ||
 252                         ctx->qat_cipher_alg ==
 253                                 ICP_QAT_HW_CIPHER_ALGO_ZUC_3G_128_EEA3) {
 254
 255                         if (unlikely(
 256                             (op->sym->cipher.data.length % BYTE_LENGTH != 0) ||
 257                             (op->sym->cipher.data.offset % BYTE_LENGTH != 0))) {
 258                                 QAT_DP_LOG(ERR,
 259                   "SNOW3G/KASUMI/ZUC in QAT PMD only supports byte aligned values");
 260                                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 261                                 return -EINVAL;
 262                         }
 263                         cipher_len = op->sym->cipher.data.length >> 3;
 264                         cipher_ofs = op->sym->cipher.data.offset >> 3;
 265
 266                 } else if (ctx->bpi_ctx) {
 267                         /* DOCSIS - only send complete blocks to device.
 268                          * Process any partial block using CFB mode.
 269                          * Even if 0 complete blocks, still send this to device
 270                          * to get into rx queue for post-process and dequeuing
 271                          */
 272                         cipher_len = qat_bpicipher_preprocess(ctx, op);
 273                         cipher_ofs = op->sym->cipher.data.offset;
 274                 } else {
 275                         cipher_len = op->sym->cipher.data.length;
 276                         cipher_ofs = op->sym->cipher.data.offset;
 277                 }
 278
 279                 set_cipher_iv(ctx->cipher_iv.length, ctx->cipher_iv.offset,
 280                                 cipher_param, op, qat_req);
 281                 min_ofs = cipher_ofs;
 282         }
 283
 284         if (do_auth) {
 285
 286                 if (ctx->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_SNOW_3G_UIA2 ||
 287                         ctx->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_KASUMI_F9 ||
 288                         ctx->qat_hash_alg ==
 289                                 ICP_QAT_HW_AUTH_ALGO_ZUC_3G_128_EIA3) {
 290                         if (unlikely(
 291                             (op->sym->auth.data.offset % BYTE_LENGTH != 0) ||
 292                             (op->sym->auth.data.length % BYTE_LENGTH != 0))) {
 293                                 QAT_DP_LOG(ERR,
 294                 "For SNOW3G/KASUMI/ZUC, QAT PMD only supports byte aligned values");
 295                                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 296                                 return -EINVAL;
 297                         }
 298                         auth_ofs = op->sym->auth.data.offset >> 3;
 299                         auth_len = op->sym->auth.data.length >> 3;
 300
 301                         auth_param->u1.aad_adr =
 302                                         rte_crypto_op_ctophys_offset(op,
 303                                                         ctx->auth_iv.offset);
 304
 305                 } else if (ctx->qat_hash_alg ==
 306                                         ICP_QAT_HW_AUTH_ALGO_GALOIS_128 ||
 307                                 ctx->qat_hash_alg ==
 308                                         ICP_QAT_HW_AUTH_ALGO_GALOIS_64) {
 309                         /* AES-GMAC */
 310                         set_cipher_iv(ctx->auth_iv.length,
 311                                 ctx->auth_iv.offset,
 312                                 cipher_param, op, qat_req);
 313                         auth_ofs = op->sym->auth.data.offset;
 314                         auth_len = op->sym->auth.data.length;
 315
 316                         auth_param->u1.aad_adr = 0;
 317                         auth_param->u2.aad_sz = 0;
 318
 319                         /*
 320                          * If len(iv)==12B fw computes J0
 321                          */
 322                         if (ctx->auth_iv.length == 12) {
 323                                 ICP_QAT_FW_LA_GCM_IV_LEN_FLAG_SET(
 324                                         qat_req->comn_hdr.serv_specif_flags,
 325                                         ICP_QAT_FW_LA_GCM_IV_LEN_12_OCTETS);
 326
 327                         }
 328                 } else {
 329                         auth_ofs = op->sym->auth.data.offset;
 330                         auth_len = op->sym->auth.data.length;
 331
 332                 }
 333                 min_ofs = auth_ofs;
 334
 335                 auth_param->auth_res_addr =
 336                         op->sym->auth.digest.phys_addr;
 337
 338         }
 339
 340         if (do_aead) {
 341                 /*
 342                  * This address may used for setting AAD physical pointer
 343                  * into IV offset from op
 344                  */
 345                 rte_iova_t aad_phys_addr_aead = op->sym->aead.aad.phys_addr;
 346                 if (ctx->qat_hash_alg ==
 347                                 ICP_QAT_HW_AUTH_ALGO_GALOIS_128 ||
 348                                 ctx->qat_hash_alg ==
 349                                         ICP_QAT_HW_AUTH_ALGO_GALOIS_64) {
 350                         /*
 351                          * If len(iv)==12B fw computes J0
 352                          */
 353                         if (ctx->cipher_iv.length == 12) {
 354                                 ICP_QAT_FW_LA_GCM_IV_LEN_FLAG_SET(
 355                                         qat_req->comn_hdr.serv_specif_flags,
 356                                         ICP_QAT_FW_LA_GCM_IV_LEN_12_OCTETS);
 357                         }
 358                         set_cipher_iv(ctx->cipher_iv.length,
 359                                         ctx->cipher_iv.offset,
 360                                         cipher_param, op, qat_req);
 361
 362                 } else if (ctx->qat_hash_alg ==
 363                                 ICP_QAT_HW_AUTH_ALGO_AES_CBC_MAC) {
 364
 365                         /* In case of AES-CCM this may point to user selected
 366                          * memory or iv offset in cypto_op
 367                          */
 368                         uint8_t *aad_data = op->sym->aead.aad.data;
 369                         /* This is true AAD length, it not includes 18 bytes of
 370                          * preceding data
 371                          */
 372                         uint8_t aad_ccm_real_len = 0;
 373                         uint8_t aad_len_field_sz = 0;
 374                         uint32_t msg_len_be =
 375                                         rte_bswap32(op->sym->aead.data.length);
 376
 377                         if (ctx->aad_len > ICP_QAT_HW_CCM_AAD_DATA_OFFSET) {
 378                                 aad_len_field_sz = ICP_QAT_HW_CCM_AAD_LEN_INFO;
 379                                 aad_ccm_real_len = ctx->aad_len -
 380                                         ICP_QAT_HW_CCM_AAD_B0_LEN -
 381                                         ICP_QAT_HW_CCM_AAD_LEN_INFO;
 382                         } else {
 383                                 /*
 384                                  * aad_len not greater than 18, so no actual aad
 385                                  *  data, then use IV after op for B0 block
 386                                  */
 387                                 aad_data = rte_crypto_op_ctod_offset(op,
 388                                                 uint8_t *,
 389                                                 ctx->cipher_iv.offset);
 390                                 aad_phys_addr_aead =
 391                                                 rte_crypto_op_ctophys_offset(op,
 392                                                         ctx->cipher_iv.offset);
 393                         }
 394
 395                         uint8_t q = ICP_QAT_HW_CCM_NQ_CONST -
 396                                                         ctx->cipher_iv.length;
 397
 398                         aad_data[0] = ICP_QAT_HW_CCM_BUILD_B0_FLAGS(
 399                                                         aad_len_field_sz,
 400                                                         ctx->digest_length, q);
 401
 402                         if (q > ICP_QAT_HW_CCM_MSG_LEN_MAX_FIELD_SIZE) {
 403                                 memcpy(aad_data + ctx->cipher_iv.length +
 404                                     ICP_QAT_HW_CCM_NONCE_OFFSET +
 405                                     (q - ICP_QAT_HW_CCM_MSG_LEN_MAX_FIELD_SIZE),
 406                                     (uint8_t *)&msg_len_be,
 407                                     ICP_QAT_HW_CCM_MSG_LEN_MAX_FIELD_SIZE);
 408                         } else {
 409                                 memcpy(aad_data + ctx->cipher_iv.length +
 410                                     ICP_QAT_HW_CCM_NONCE_OFFSET,
 411                                     (uint8_t *)&msg_len_be
 412                                     + (ICP_QAT_HW_CCM_MSG_LEN_MAX_FIELD_SIZE
 413                                     - q), q);
 414                         }
 415
 416                         if (aad_len_field_sz > 0) {
 417                                 *(uint16_t *)&aad_data[ICP_QAT_HW_CCM_AAD_B0_LEN]
 418                                                 = rte_bswap16(aad_ccm_real_len);
 419
 420                                 if ((aad_ccm_real_len + aad_len_field_sz)
 421                                                 % ICP_QAT_HW_CCM_AAD_B0_LEN) {
 422                                         uint8_t pad_len = 0;
 423                                         uint8_t pad_idx = 0;
 424
 425                                         pad_len = ICP_QAT_HW_CCM_AAD_B0_LEN -
 426                                         ((aad_ccm_real_len + aad_len_field_sz) %
 427                                                 ICP_QAT_HW_CCM_AAD_B0_LEN);
 428                                         pad_idx = ICP_QAT_HW_CCM_AAD_B0_LEN +
 429                                             aad_ccm_real_len + aad_len_field_sz;
 430                                         memset(&aad_data[pad_idx],
 431                                                         0, pad_len);
 432                                 }
 433
 434                         }
 435
 436                         set_cipher_iv_ccm(ctx->cipher_iv.length,
 437                                         ctx->cipher_iv.offset,
 438                                         cipher_param, op, q,
 439                                         aad_len_field_sz);
 440
 441                 }
 442
 443                 cipher_len = op->sym->aead.data.length;
 444                 cipher_ofs = op->sym->aead.data.offset;
 445                 auth_len = op->sym->aead.data.length;
 446                 auth_ofs = op->sym->aead.data.offset;
 447
 448                 auth_param->u1.aad_adr = aad_phys_addr_aead;
 449                 auth_param->auth_res_addr = op->sym->aead.digest.phys_addr;
 450                 min_ofs = op->sym->aead.data.offset;
 451         }
 452
 453         if (op->sym->m_src->nb_segs > 1 ||
 454                         (op->sym->m_dst && op->sym->m_dst->nb_segs > 1))
 455                 do_sgl = 1;
 456
 457         /* adjust for chain case */
 458         if (do_cipher && do_auth)
 459                 min_ofs = cipher_ofs < auth_ofs ? cipher_ofs : auth_ofs;
 460
 461         if (unlikely(min_ofs >= rte_pktmbuf_data_len(op->sym->m_src) && do_sgl))
 462                 min_ofs = 0;
 463
 464         if (unlikely((op->sym->m_dst != NULL) &&
 465                         (op->sym->m_dst != op->sym->m_src))) {
 466                 /* Out-of-place operation (OOP)
 467                  * Don't align DMA start. DMA the minimum data-set
 468                  * so as not to overwrite data in dest buffer
 469                  */
 470                 in_place = 0;
 471                 src_buf_start =
 472                         rte_pktmbuf_iova_offset(op->sym->m_src, min_ofs);
 473                 dst_buf_start =
 474                         rte_pktmbuf_iova_offset(op->sym->m_dst, min_ofs);
 475
 476         } else {
 477                 /* In-place operation
 478                  * Start DMA at nearest aligned address below min_ofs
 479                  */
 480                 src_buf_start =
 481                         rte_pktmbuf_iova_offset(op->sym->m_src, min_ofs)
 482                                                 & QAT_64_BTYE_ALIGN_MASK;
 483
 484                 if (unlikely((rte_pktmbuf_iova(op->sym->m_src) -
 485                                         rte_pktmbuf_headroom(op->sym->m_src))
 486                                                         > src_buf_start)) {
 487                         /* alignment has pushed addr ahead of start of mbuf
 488                          * so revert and take the performance hit
 489                          */
 490                         src_buf_start =
 491                                 rte_pktmbuf_iova_offset(op->sym->m_src,
 492                                                                 min_ofs);
 493                 }
 494                 dst_buf_start = src_buf_start;
 495
 496                 /* remember any adjustment for later, note, can be +/- */
 497                 alignment_adjustment = src_buf_start -
 498                         rte_pktmbuf_iova_offset(op->sym->m_src, min_ofs);
 499         }
 500
 501         if (do_cipher || do_aead) {
 502                 cipher_param->cipher_offset =
 503                                 (uint32_t)rte_pktmbuf_iova_offset(
 504                                 op->sym->m_src, cipher_ofs) - src_buf_start;
 505                 cipher_param->cipher_length = cipher_len;
 506         } else {
 507                 cipher_param->cipher_offset = 0;
 508                 cipher_param->cipher_length = 0;
 509         }
 510
 511         if (do_auth || do_aead) {
 512                 auth_param->auth_off = (uint32_t)rte_pktmbuf_iova_offset(
 513                                 op->sym->m_src, auth_ofs) - src_buf_start;
 514                 auth_param->auth_len = auth_len;
 515         } else {
 516                 auth_param->auth_off = 0;
 517                 auth_param->auth_len = 0;
 518         }
 519
 520         qat_req->comn_mid.dst_length =
 521                 qat_req->comn_mid.src_length =
 522                 (cipher_param->cipher_offset + cipher_param->cipher_length)
 523                 > (auth_param->auth_off + auth_param->auth_len) ?
 524                 (cipher_param->cipher_offset + cipher_param->cipher_length)
 525                 : (auth_param->auth_off + auth_param->auth_len);
 526
 527         if (do_auth && do_cipher) {
 528                 /* Handle digest-encrypted cases, i.e.
 529                  * auth-gen-then-cipher-encrypt and
 530                  * cipher-decrypt-then-auth-verify
 531                  */
 532                  /* First find the end of the data */
 533                 if (do_sgl) {
 534                         uint32_t remaining_off = auth_param->auth_off +
 535                                 auth_param->auth_len + alignment_adjustment;
 536                         struct rte_mbuf *sgl_buf =
 537                                 (in_place ?
 538                                         op->sym->m_src : op->sym->m_dst);
 539
 540                         while (remaining_off >= rte_pktmbuf_data_len(sgl_buf)
 541                                         && sgl_buf->next != NULL) {
 542                                 remaining_off -= rte_pktmbuf_data_len(sgl_buf);
 543                                 sgl_buf = sgl_buf->next;
 544                         }
 545
 546                         auth_data_end = (uint64_t)rte_pktmbuf_iova_offset(
 547                                 sgl_buf, remaining_off);
 548                 } else {
 549                         auth_data_end = (in_place ?
 550                                 src_buf_start : dst_buf_start) +
 551                                 auth_param->auth_off + auth_param->auth_len;
 552                 }
 553                 /* Then check if digest-encrypted conditions are met */
 554                 if ((auth_param->auth_off + auth_param->auth_len <
 555                                         cipher_param->cipher_offset +
 556                                         cipher_param->cipher_length) &&
 557                                 (op->sym->auth.digest.phys_addr ==
 558                                         auth_data_end)) {
 559                         /* Handle partial digest encryption */
 560                         if (cipher_param->cipher_offset +
 561                                         cipher_param->cipher_length <
 562                                         auth_param->auth_off +
 563                                         auth_param->auth_len +
 564                                         ctx->digest_length)
 565                                 qat_req->comn_mid.dst_length =
 566                                         qat_req->comn_mid.src_length =
 567                                         auth_param->auth_off +
 568                                         auth_param->auth_len +
 569                                         ctx->digest_length;
 570                         struct icp_qat_fw_comn_req_hdr *header =
 571                                 &qat_req->comn_hdr;
 572                         ICP_QAT_FW_LA_DIGEST_IN_BUFFER_SET(
 573                                 header->serv_specif_flags,
 574                                 ICP_QAT_FW_LA_DIGEST_IN_BUFFER);
 575                 }
 576         }
 577
 578         if (do_sgl) {
 579
 580                 ICP_QAT_FW_COMN_PTR_TYPE_SET(qat_req->comn_hdr.comn_req_flags,
 581                                 QAT_COMN_PTR_TYPE_SGL);
 582                 ret = qat_sgl_fill_array(op->sym->m_src,
 583                    (int64_t)(src_buf_start - rte_pktmbuf_iova(op->sym->m_src)),
 584                    &cookie->qat_sgl_src,
 585                    qat_req->comn_mid.src_length,
 586                    QAT_SYM_SGL_MAX_NUMBER);
 587
 588                 if (unlikely(ret)) {
 589                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill sgl array");
 590                         return ret;
 591                 }
 592
 593                 if (in_place)
 594                         qat_req->comn_mid.dest_data_addr =
 595                                 qat_req->comn_mid.src_data_addr =
 596                                 cookie->qat_sgl_src_phys_addr;
 597                 else {
 598                         ret = qat_sgl_fill_array(op->sym->m_dst,
 599                                 (int64_t)(dst_buf_start -
 600                                           rte_pktmbuf_iova(op->sym->m_dst)),
 601                                  &cookie->qat_sgl_dst,
 602                                  qat_req->comn_mid.dst_length,
 603                                  QAT_SYM_SGL_MAX_NUMBER);
 604
 605                         if (unlikely(ret)) {
 606                                 QAT_DP_LOG(ERR, "QAT PMD can't fill sgl array");
 607                                 return ret;
 608                         }
 609
 610                         qat_req->comn_mid.src_data_addr =
 611                                 cookie->qat_sgl_src_phys_addr;
 612                         qat_req->comn_mid.dest_data_addr =
 613                                         cookie->qat_sgl_dst_phys_addr;
 614                 }
 615                 qat_req->comn_mid.src_length = 0;
 616                 qat_req->comn_mid.dst_length = 0;
 617         } else {
 618                 qat_req->comn_mid.src_data_addr = src_buf_start;
 619                 qat_req->comn_mid.dest_data_addr = dst_buf_start;
 620         }
 621
 622         /* Handle Single-Pass GCM */
 623         if (ctx->is_single_pass) {
 624                 cipher_param->spc_aad_addr = op->sym->aead.aad.phys_addr;
 625                 cipher_param->spc_auth_res_addr =
 626                                 op->sym->aead.digest.phys_addr;
 627         }
 628
 629 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 630         QAT_DP_HEXDUMP_LOG(DEBUG, "qat_req:", qat_req,
 631                         sizeof(struct icp_qat_fw_la_bulk_req));
 632         QAT_DP_HEXDUMP_LOG(DEBUG, "src_data:",
 633                         rte_pktmbuf_mtod(op->sym->m_src, uint8_t*),
 634                         rte_pktmbuf_data_len(op->sym->m_src));
 635         if (do_cipher) {
 636                 uint8_t *cipher_iv_ptr = rte_crypto_op_ctod_offset(op,
 637                                                 uint8_t *,
 638                                                 ctx->cipher_iv.offset);
 639                 QAT_DP_HEXDUMP_LOG(DEBUG, "cipher iv:", cipher_iv_ptr,
 640                                 ctx->cipher_iv.length);
 641         }
 642
 643         if (do_auth) {
 644                 if (ctx->auth_iv.length) {
 645                         uint8_t *auth_iv_ptr = rte_crypto_op_ctod_offset(op,
 646                                                         uint8_t *,
 647                                                         ctx->auth_iv.offset);
 648                         QAT_DP_HEXDUMP_LOG(DEBUG, "auth iv:", auth_iv_ptr,
 649                                                 ctx->auth_iv.length);
 650                 }
 651                 QAT_DP_HEXDUMP_LOG(DEBUG, "digest:", op->sym->auth.digest.data,
 652                                 ctx->digest_length);
 653         }
 654
 655         if (do_aead) {
 656                 QAT_DP_HEXDUMP_LOG(DEBUG, "digest:", op->sym->aead.digest.data,
 657                                 ctx->digest_length);
 658                 QAT_DP_HEXDUMP_LOG(DEBUG, "aad:", op->sym->aead.aad.data,
 659                                 ctx->aad_len);
 660         }
 661 #endif
 662         return 0;
 663 }