cryptodev_int.h

   1 /* cipher stuff */
   2 #ifndef CRYPTODEV_INT_H
   3 # define CRYPTODEV_INT_H
   4
   5 #include <linux/init.h>
   6 #include <linux/sched.h>
   7 #include <linux/fs.h>
   8 #include <linux/file.h>
   9 #include <linux/fdtable.h>
  10 #include <linux/miscdevice.h>
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13
  14 #undef DISABLE_ZCOPY
  15
  16 #define PFX "cryptodev: "
  17 #define dprintk(level,severity,format,a...)                     \
  18         do {                                            \
  19                 if (level <= cryptodev_verbosity)                               \
  20                         printk(severity PFX "%s[%u]: " format,  \
  21                                current->comm, current->pid,     \
  22                                ##a);                            \
  23         } while (0)
  24
  25 extern int cryptodev_verbosity;
  26
  27 struct cipher_data
  28 {
  29         int init; /* 0 uninitialized */
  30         int blocksize;
  31         int ivsize;
  32         struct {
  33                 struct crypto_ablkcipher* s;
  34                 struct cryptodev_result *result;
  35                 struct ablkcipher_request *request;
  36                 uint8_t iv[EALG_MAX_BLOCK_LEN];
  37         } async;
  38 };
  39
  40 int cryptodev_cipher_init(struct cipher_data* out, const char* alg_name, uint8_t * key, size_t keylen);
  41 void cryptodev_cipher_deinit(struct cipher_data* cdata);
  42 ssize_t cryptodev_cipher_decrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
  43 ssize_t cryptodev_cipher_encrypt( struct cipher_data* cdata, struct scatterlist *sg1, struct scatterlist *sg2, size_t len);
  44 void cryptodev_cipher_set_iv(struct cipher_data* cdata, void* iv, size_t iv_size);
  45
  46 /* hash stuff */
  47 struct hash_data
  48 {
  49         int init; /* 0 uninitialized */
  50         int digestsize;
  51         struct {
  52                 struct crypto_ahash *s;
  53                 struct cryptodev_result *result;
  54                 struct ahash_request *request;
  55         } async;
  56 };
  57
  58 int cryptodev_hash_final( struct hash_data* hdata, void* output);
  59 ssize_t cryptodev_hash_update( struct hash_data* hdata, struct scatterlist *sg, size_t len);
  60 int cryptodev_hash_reset( struct hash_data* hdata);
  61 void cryptodev_hash_deinit(struct hash_data* hdata);
  62 int cryptodev_hash_init( struct hash_data* hdata, const char* alg_name, int hmac_mode, void* mackey, size_t mackeylen);
  63
  64 /* compatibility stuff */
  65 #ifdef CONFIG_COMPAT
  66 #include <linux/compat.h>
  67
  68 /* input of CIOCGSESSION */
  69 struct compat_session_op {
  70         /* Specify either cipher or mac
  71          */
  72         uint32_t        cipher;         /* cryptodev_crypto_op_t */
  73         uint32_t        mac;            /* cryptodev_crypto_op_t */
  74
  75         uint32_t        keylen;
  76         compat_uptr_t   key;            /* pointer to key data */
  77         uint32_t        mackeylen;
  78         compat_uptr_t   mackey;         /* pointer to mac key data */
  79
  80         uint32_t        ses;            /* session identifier */
  81 };
  82
  83 /* input of CIOCCRYPT */
  84  struct compat_crypt_op {
  85         uint32_t        ses;            /* session identifier */
  86         uint16_t        op;             /* COP_ENCRYPT or COP_DECRYPT */
  87         uint16_t        flags;          /* no usage so far, use 0 */
  88         uint32_t        len;            /* length of source data */
  89         compat_uptr_t   src;            /* source data */
  90         compat_uptr_t   dst;            /* pointer to output data */
  91         compat_uptr_t   mac;            /* pointer to output data for hash/MAC operations */
  92         compat_uptr_t   iv;             /* initialization vector for encryption operations */
  93 };
  94
  95 /* compat ioctls, defined for the above structs */
  96 #define COMPAT_CIOCGSESSION    _IOWR('c', 102, struct compat_session_op)
  97 #define COMPAT_CIOCCRYPT       _IOWR('c', 104, struct compat_crypt_op)
  98
  99 #endif /* CONFIG_COMPAT */
 100
 101 #endif /* CRYPTODEV_INT_H */