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/* cipher stuff */
#ifndef CRYPTODEV_INT_H
# define CRYPTODEV_INT_H
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/fdtable.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/scatterlist.h>
#include <cryptodev.h>
#define PFX "cryptodev: "
#define dprintk(level,severity,format,a...) \
do { \
if (level <= cryptodev_verbosity) \
printk(severity PFX "%s[%u]: " format, \
current->comm, current->pid, \
##a); \
} while (0)
extern int cryptodev_verbosity;
/* For zero copy */
int __get_userbuf(uint8_t *addr, uint32_t len, int write,
int pgcount, struct page **pg, struct scatterlist *sg);
void release_user_pages(struct page **pg, int pagecount);
/* last page - first page + 1 */
#define PAGECOUNT(buf, buflen) \
((((unsigned long)(buf + buflen - 1) & PAGE_MASK) >> PAGE_SHIFT) - \
(((unsigned long) buf & PAGE_MASK) >> PAGE_SHIFT) + 1)
struct cipher_data
{
int init; /* 0 uninitialized */
int blocksize;
int ivsize;
struct {
struct crypto_ablkcipher* s;
struct cryptodev_result *result;
struct ablkcipher_request *request;
uint8_t iv[EALG_MAX_BLOCK_LEN];
} async;
};
int cryptodev_cipher_init(struct cipher_data* out, const char* alg_name, uint8_t * key, size_t keylen);
void cryptodev_cipher_deinit(struct cipher_data* cdata);
ssize_t cryptodev_cipher_decrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
ssize_t cryptodev_cipher_encrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
void cryptodev_cipher_set_iv(struct cipher_data* cdata, void* iv, size_t iv_size);
int _cryptodev_cipher_decrypt(struct cipher_data* cdata, const void* ciphertext,
size_t ciphertext_size, void* plaintext, size_t plaintext_size);
int _cryptodev_cipher_encrypt(struct cipher_data* cdata, const void* plaintext,
size_t plaintext_size, void* ciphertext, size_t ciphertext_size);
/* hash stuff */
struct hash_data
{
int init; /* 0 uninitialized */
int digestsize;
struct {
struct crypto_ahash *s;
struct cryptodev_result *result;
struct ahash_request *request;
} async;
};
int cryptodev_hash_final( struct hash_data* hdata, void* output);
ssize_t cryptodev_hash_update( struct hash_data* hdata, struct scatterlist *sg, size_t len);
ssize_t _cryptodev_hash_update( struct hash_data* hdata, const void* data, size_t len);
int cryptodev_hash_reset( struct hash_data* hdata);
void cryptodev_hash_deinit(struct hash_data* hdata);
int cryptodev_hash_init( struct hash_data* hdata, const char* alg_name, int hmac_mode, void* mackey, size_t mackeylen);
/* compatibility stuff */
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
/* input of CIOCGSESSION */
struct compat_session_op {
/* Specify either cipher or mac
*/
uint32_t cipher; /* cryptodev_crypto_op_t */
uint32_t mac; /* cryptodev_crypto_op_t */
uint32_t keylen;
compat_uptr_t key; /* pointer to key data */
uint32_t mackeylen;
compat_uptr_t mackey; /* pointer to mac key data */
uint32_t ses; /* session identifier */
};
/* input of CIOCCRYPT */
struct compat_crypt_op {
uint32_t ses; /* session identifier */
uint16_t op; /* COP_ENCRYPT or COP_DECRYPT */
uint16_t flags; /* no usage so far, use 0 */
uint32_t len; /* length of source data */
compat_uptr_t src; /* source data */
compat_uptr_t dst; /* pointer to output data */
compat_uptr_t mac; /* pointer to output data for hash/MAC operations */
compat_uptr_t iv; /* initialization vector for encryption operations */
};
/* compat ioctls, defined for the above structs */
#define COMPAT_CIOCGSESSION _IOWR('c', 102, struct compat_session_op)
#define COMPAT_CIOCCRYPT _IOWR('c', 104, struct compat_crypt_op)
#endif /* CONFIG_COMPAT */
#endif /* CRYPTODEV_INT_H */
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