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 && \
14     (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
15#  pragma GCC diagnostic ignored "-Wvariadic-macros"
16# endif
17
18# ifdef ALG_DEBUG
19#  define ALG_DGB(x, ...) fprintf(stderr, "ALG_DBG: " x, __VA_ARGS__)
20#  define ALG_INFO(x, ...) fprintf(stderr, "ALG_INFO: " x, __VA_ARGS__)
21#  define ALG_WARN(x, ...) fprintf(stderr, "ALG_WARN: " x, __VA_ARGS__)
22# else
23#  define ALG_DGB(x, ...)
24#  define ALG_INFO(x, ...)
25#  define ALG_WARN(x, ...)
26# endif
27
28# define ALG_ERR(x, ...) fprintf(stderr, "ALG_ERR: " x, __VA_ARGS__)
29# define ALG_PERR(x, ...) \
30                do { \
31                    fprintf(stderr, "ALG_PERR: " x, __VA_ARGS__); \
32                    perror(NULL); \
33                } while(0)
34# define ALG_PWARN(x, ...) \
35                do { \
36                    fprintf(stderr, "ALG_PERR: " x, __VA_ARGS__); \
37                    perror(NULL); \
38                } while(0)
39
40# ifndef AES_BLOCK_SIZE
41#  define AES_BLOCK_SIZE   16
42# endif
43# define AES_KEY_SIZE_128 16
44# define AES_KEY_SIZE_192 24
45# define AES_KEY_SIZE_256 32
46# define AES_IV_LEN       16
47
48# define MAX_INFLIGHTS 1
49
50typedef enum {
51    MODE_UNINIT = 0,
52    MODE_SYNC,
53    MODE_ASYNC
54} op_mode;
55
56enum {
57    AES_CBC_128 = 0,
58    AES_CBC_192,
59    AES_CBC_256
60};
61
62struct cbc_cipher_handles {
63    int key_size;
64    EVP_CIPHER *_hidden;
65};
66
67typedef struct cbc_cipher_handles cbc_handles;
68
69struct afalg_aio_st {
70    int efd;
71    op_mode mode;
72    aio_context_t aio_ctx;
73    struct io_event events[MAX_INFLIGHTS];
74    struct iocb cbt[MAX_INFLIGHTS];
75};
76typedef struct afalg_aio_st afalg_aio;
77
78/*
79 * MAGIC Number to identify correct initialisation
80 * of afalg_ctx.
81 */
82# define MAGIC_INIT_NUM 0x1890671
83
84struct afalg_ctx_st {
85    int init_done;
86    int sfd;
87    int bfd;
88# ifdef ALG_ZERO_COPY
89    int zc_pipe[2];
90# endif
91    afalg_aio aio;
92};
93
94typedef struct afalg_ctx_st afalg_ctx;
95#endif
96