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      1 /*
      2  * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 #ifndef OSSL_ENGINES_E_AFALG_H
     11 #define OSSL_ENGINES_E_AFALG_H
     12 
     13 #if defined(__GNUC__) && __GNUC__ >= 4 && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
     14 #pragma GCC diagnostic ignored "-Wvariadic-macros"
     15 #endif
     16 
     17 #ifdef ALG_DEBUG
     18 #define ALG_DGB(x, ...) fprintf(stderr, "ALG_DBG: " x, __VA_ARGS__)
     19 #define ALG_INFO(x, ...) fprintf(stderr, "ALG_INFO: " x, __VA_ARGS__)
     20 #define ALG_WARN(x, ...) fprintf(stderr, "ALG_WARN: " x, __VA_ARGS__)
     21 #else
     22 #define ALG_DGB(x, ...)
     23 #define ALG_INFO(x, ...)
     24 #define ALG_WARN(x, ...)
     25 #endif
     26 
     27 #define ALG_ERR(x, ...) fprintf(stderr, "ALG_ERR: " x, __VA_ARGS__)
     28 #define ALG_PERR(x, ...)                              \
     29     do {                                              \
     30         fprintf(stderr, "ALG_PERR: " x, __VA_ARGS__); \
     31         perror(NULL);                                 \
     32     } while (0)
     33 #define ALG_PWARN(x, ...)                             \
     34     do {                                              \
     35         fprintf(stderr, "ALG_PERR: " x, __VA_ARGS__); \
     36         perror(NULL);                                 \
     37     } while (0)
     38 
     39 #ifndef AES_BLOCK_SIZE
     40 #define AES_BLOCK_SIZE 16
     41 #endif
     42 #define AES_KEY_SIZE_128 16
     43 #define AES_KEY_SIZE_192 24
     44 #define AES_KEY_SIZE_256 32
     45 #define AES_IV_LEN 16
     46 
     47 #define MAX_INFLIGHTS 1
     48 
     49 typedef enum {
     50     MODE_UNINIT = 0,
     51     MODE_SYNC,
     52     MODE_ASYNC
     53 } op_mode;
     54 
     55 enum {
     56     AES_CBC_128 = 0,
     57     AES_CBC_192,
     58     AES_CBC_256
     59 };
     60 
     61 struct cbc_cipher_handles {
     62     int key_size;
     63     EVP_CIPHER *_hidden;
     64 };
     65 
     66 typedef struct cbc_cipher_handles cbc_handles;
     67 
     68 struct afalg_aio_st {
     69     int efd;
     70     op_mode mode;
     71     aio_context_t aio_ctx;
     72     struct io_event events[MAX_INFLIGHTS];
     73     struct iocb cbt[MAX_INFLIGHTS];
     74 };
     75 typedef struct afalg_aio_st afalg_aio;
     76 
     77 /*
     78  * MAGIC Number to identify correct initialisation
     79  * of afalg_ctx.
     80  */
     81 #define MAGIC_INIT_NUM 0x1890671
     82 
     83 struct afalg_ctx_st {
     84     int init_done;
     85     int sfd;
     86     int bfd;
     87 #ifdef ALG_ZERO_COPY
     88     int zc_pipe[2];
     89 #endif
     90     afalg_aio aio;
     91 };
     92 
     93 typedef struct afalg_ctx_st afalg_ctx;
     94 #endif
     95