Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / linux / crypto.h

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 387da6a..4484f5e 100644 (file)
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -3,6 +3,7 @@
  *
  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
  * Copyright (c) 2002 David S. Miller (davem@redhat.com)
+ * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
  *
  * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
  * and Nettle, by Niels Möller.
@@ -45,6 +46,7 @@
 #define CRYPTO_TFM_MODE_CTR            0x00000008
 
 #define CRYPTO_TFM_REQ_WEAK_KEY                0x00000100
+#define CRYPTO_TFM_REQ_MAY_SLEEP       0x00000200
 #define CRYPTO_TFM_RES_WEAK_KEY                0x00100000
 #define CRYPTO_TFM_RES_BAD_KEY_LEN     0x00200000
 #define CRYPTO_TFM_RES_BAD_KEY_SCHED   0x00400000
@@ -61,6 +63,15 @@
 #define CRYPTO_DIR_DECRYPT             0
 
 struct scatterlist;
+struct crypto_tfm;
+
+struct cipher_desc {
+       struct crypto_tfm *tfm;
+       void (*crfn)(void *ctx, u8 *dst, const u8 *src);
+       unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
+                            const u8 *src, unsigned int nbytes);
+       void *info;
+};
 
 /*
  * Algorithms: modular crypto algorithm implementations, managed
@@ -73,6 +84,19 @@ struct cipher_alg {
                          unsigned int keylen, u32 *flags);
        void (*cia_encrypt)(void *ctx, u8 *dst, const u8 *src);
        void (*cia_decrypt)(void *ctx, u8 *dst, const u8 *src);
+
+       unsigned int (*cia_encrypt_ecb)(const struct cipher_desc *desc,
+                                       u8 *dst, const u8 *src,
+                                       unsigned int nbytes);
+       unsigned int (*cia_decrypt_ecb)(const struct cipher_desc *desc,
+                                       u8 *dst, const u8 *src,
+                                       unsigned int nbytes);
+       unsigned int (*cia_encrypt_cbc)(const struct cipher_desc *desc,
+                                       u8 *dst, const u8 *src,
+                                       unsigned int nbytes);
+       unsigned int (*cia_decrypt_cbc)(const struct cipher_desc *desc,
+                                       u8 *dst, const u8 *src,
+                                       unsigned int nbytes);
 };
 
 struct digest_alg {
@@ -102,7 +126,12 @@ struct crypto_alg {
        u32 cra_flags;
        unsigned int cra_blocksize;
        unsigned int cra_ctxsize;
+       unsigned int cra_alignmask;
+
+       int cra_priority;
+
        const char cra_name[CRYPTO_MAX_ALG_NAME];
+       const char cra_driver_name[CRYPTO_MAX_ALG_NAME];
 
        union {
                struct cipher_alg cipher;
@@ -136,7 +165,6 @@ static inline int crypto_alg_available(const char *name, u32 flags)
  * and core processing logic.  Managed via crypto_alloc_tfm() and
  * crypto_free_tfm(), as well as the various helpers below.
  */
-struct crypto_tfm;
 
 struct cipher_tfm {
        void *cit_iv;
@@ -167,6 +195,8 @@ struct digest_tfm {
        void (*dit_init)(struct crypto_tfm *tfm);
        void (*dit_update)(struct crypto_tfm *tfm,
                           struct scatterlist *sg, unsigned int nsg);
+       void (*dit_update_kernel)(struct crypto_tfm *tfm,
+                                 const void *data, size_t count);
        void (*dit_final)(struct crypto_tfm *tfm, u8 *out);
        void (*dit_digest)(struct crypto_tfm *tfm, struct scatterlist *sg,
                           unsigned int nsg, u8 *out);
@@ -201,6 +231,8 @@ struct crypto_tfm {
        } crt_u;
        
        struct crypto_alg *__crt_alg;
+
+       char __crt_ctx[] __attribute__ ((__aligned__));
 };
 
 /* 
@@ -213,10 +245,14 @@ struct crypto_tfm {
  * will then attempt to load a module of the same name or alias.  A refcount
  * is grabbed on the algorithm which is then associated with the new transform.
  *
+ * crypto_alloc_tfm2() is similar, but allows module loading to be suppressed.
+ *
  * crypto_free_tfm() frees up the transform and any associated resources,
  * then drops the refcount on the associated algorithm.
  */
 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
+struct crypto_tfm *crypto_alloc_tfm2(const char *alg_name, u32 tfm_flags,
+                                    int nomodload);
 void crypto_free_tfm(struct crypto_tfm *tfm);
 
 /*
@@ -266,6 +302,22 @@ static inline unsigned int crypto_tfm_alg_digestsize(struct crypto_tfm *tfm)
        return tfm->__crt_alg->cra_digest.dia_digestsize;
 }
 
+static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
+{
+       return tfm->__crt_alg->cra_alignmask;
+}
+
+static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
+{
+       return tfm->__crt_ctx;
+}
+
+static inline unsigned int crypto_tfm_ctx_alignment(void)
+{
+       struct crypto_tfm *tfm;
+       return __alignof__(tfm->__crt_ctx);
+}
+
 /*
  * API wrappers.
  */
@@ -283,6 +335,14 @@ static inline void crypto_digest_update(struct crypto_tfm *tfm,
        tfm->crt_digest.dit_update(tfm, sg, nsg);
 }
 
+static inline void crypto_digest_update_kernel(struct crypto_tfm *tfm,
+                                              const void *data,
+                                              size_t count)
+{
+       BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
+       tfm->crt_digest.dit_update_kernel(tfm, data, count);
+}
+
 static inline void crypto_digest_final(struct crypto_tfm *tfm, u8 *out)
 {
        BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);