diff options
Diffstat (limited to 'crypto/userspace/cryptodev_int.h')
| -rw-r--r-- | crypto/userspace/cryptodev_int.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/crypto/userspace/cryptodev_int.h b/crypto/userspace/cryptodev_int.h new file mode 100644 index 00000000000..b4059febbb0 --- /dev/null +++ b/crypto/userspace/cryptodev_int.h @@ -0,0 +1,119 @@ +/* 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 __user *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) + +#define DEFAULT_PREALLOC_PAGES 32 + +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, const struct scatterlist *sg1, struct scatterlist *sg2, size_t len); +ssize_t cryptodev_cipher_encrypt( struct cipher_data* cdata, const 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 */ |