drivers/crypto/nitrox/nitrox_sym_ctx.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #ifndef _NITROX_SYM_CTX_H_
   6 #define _NITROX_SYM_CTX_H_
   7
   8 #include <stdbool.h>
   9
  10 #include <rte_crypto.h>
  11
  12 #define AES_MAX_KEY_SIZE 32
  13 #define AES_BLOCK_SIZE 16
  14 #define AES_GCM_SALT_SIZE 4
  15
  16 enum nitrox_chain {
  17         NITROX_CHAIN_CIPHER_ONLY,
  18         NITROX_CHAIN_CIPHER_AUTH,
  19         NITROX_CHAIN_AUTH_CIPHER,
  20         NITROX_CHAIN_COMBINED,
  21         NITROX_CHAIN_NOT_SUPPORTED
  22 };
  23
  24 enum nitrox_op {
  25         NITROX_OP_ENCRYPT,
  26         NITROX_OP_DECRYPT,
  27 };
  28
  29 struct crypto_keys {
  30         uint8_t key[AES_MAX_KEY_SIZE];
  31         uint8_t iv[AES_BLOCK_SIZE];
  32 };
  33
  34 struct auth_keys {
  35         uint8_t ipad[64];
  36         uint8_t opad[64];
  37 };
  38
  39 struct flexi_crypto_context {
  40         union {
  41                 uint64_t flags;
  42                 struct {
  43 #if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
  44                         uint64_t cipher_type : 4;
  45                         uint64_t reserved_59 : 1;
  46                         uint64_t aes_keylen : 2;
  47                         uint64_t iv_source : 1;
  48                         uint64_t hash_type : 4;
  49                         uint64_t reserved_49_51 : 3;
  50                         uint64_t auth_input_type : 1;
  51                         uint64_t mac_len : 8;
  52                         uint64_t reserved_0_39 : 40;
  53 #else
  54                         uint64_t reserved_0_39 : 40;
  55                         uint64_t mac_len : 8;
  56                         uint64_t auth_input_type : 1;
  57                         uint64_t reserved_49_51 : 3;
  58                         uint64_t hash_type : 4;
  59                         uint64_t iv_source : 1;
  60                         uint64_t aes_keylen : 2;
  61                         uint64_t reserved_59 : 1;
  62                         uint64_t cipher_type : 4;
  63 #endif
  64                 } w0;
  65         };
  66         struct crypto_keys crypto;
  67         struct auth_keys auth;
  68 };
  69
  70 struct nitrox_crypto_ctx {
  71         struct flexi_crypto_context fctx;
  72         enum nitrox_chain nitrox_chain;
  73         struct {
  74                 uint16_t offset;
  75                 uint16_t length;
  76         } iv;
  77         rte_iova_t iova;
  78         uint8_t salt[AES_GCM_SALT_SIZE];
  79         uint16_t digest_length;
  80         uint16_t aad_length;
  81         uint8_t opcode;
  82         uint8_t req_op;
  83 };
  84
  85 #endif /* _NITROX_SYM_CTX_H_ */