New on disk format - encryption

1 files changed, 26 insertions, 774 deletions

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index cb9ad24f..0dbeaaed 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -24,299 +24,81 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 
-/*
- * Autoloaded crypto modules should only use a prefixed name to avoid allowing
- * arbitrary modules to be loaded. Loading from userspace may still need the
- * unprefixed names, so retains those aliases as well.
- * This uses __MODULE_INFO directly instead of MODULE_ALIAS because pre-4.3
- * gcc (e.g. avr32 toolchain) uses __LINE__ for uniqueness, and this macro
- * expands twice on the same line. Instead, use a separate base name for the
- * alias.
- */
-#define MODULE_ALIAS_CRYPTO(name)	\
-		__MODULE_INFO(alias, alias_userspace, name);	\
-		__MODULE_INFO(alias, alias_crypto, "crypto-" name)
-
-/*
- * Algorithm masks and types.
- */
 #define CRYPTO_ALG_TYPE_MASK		0x0000000f
-#define CRYPTO_ALG_TYPE_CIPHER		0x00000001
-#define CRYPTO_ALG_TYPE_AEAD		0x00000003
 #define CRYPTO_ALG_TYPE_BLKCIPHER	0x00000004
-#define CRYPTO_ALG_TYPE_ABLKCIPHER	0x00000005
-#define CRYPTO_ALG_TYPE_SKCIPHER	0x00000005
-#define CRYPTO_ALG_TYPE_GIVCIPHER	0x00000006
-#define CRYPTO_ALG_TYPE_KPP		0x00000008
-#define CRYPTO_ALG_TYPE_RNG		0x0000000c
-#define CRYPTO_ALG_TYPE_AKCIPHER	0x0000000d
-#define CRYPTO_ALG_TYPE_DIGEST		0x0000000e
-#define CRYPTO_ALG_TYPE_HASH		0x0000000e
 #define CRYPTO_ALG_TYPE_SHASH		0x0000000e
-#define CRYPTO_ALG_TYPE_AHASH		0x0000000f
-
-#define CRYPTO_ALG_TYPE_HASH_MASK	0x0000000e
-#define CRYPTO_ALG_TYPE_AHASH_MASK	0x0000000e
 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK	0x0000000c
-
 #define CRYPTO_ALG_ASYNC		0x00000080
 
-/*
- * Set this bit if and only if the algorithm requires another algorithm of
- * the same type to handle corner cases.
- */
-#define CRYPTO_ALG_NEED_FALLBACK	0x00000100
-
-/*
- * This bit is set for symmetric key ciphers that have already been wrapped
- * with a generic IV generator to prevent them from being wrapped again.
- */
-#define CRYPTO_ALG_GENIV		0x00000200
-
-/*
- * Set if the algorithm is an instance that is build from templates.
- */
-#define CRYPTO_ALG_INSTANCE		0x00000800
-
-/* Set this bit if the algorithm provided is hardware accelerated but
- * not available to userspace via instruction set or so.
- */
-#define CRYPTO_ALG_KERN_DRIVER_ONLY	0x00001000
-
-/*
- * Mark a cipher as a service implementation only usable by another
- * cipher and never by a normal user of the kernel crypto API
- */
-#define CRYPTO_ALG_INTERNAL		0x00002000
-
-/*
- * Transform masks and values (for crt_flags).
- */
-#define CRYPTO_TFM_REQ_MASK		0x000fff00
-#define CRYPTO_TFM_RES_MASK		0xfff00000
-
-#define CRYPTO_TFM_REQ_WEAK_KEY		0x00000100
-#define CRYPTO_TFM_REQ_MAY_SLEEP	0x00000200
-#define CRYPTO_TFM_REQ_MAY_BACKLOG	0x00000400
-#define CRYPTO_TFM_RES_WEAK_KEY		0x00100000
-#define CRYPTO_TFM_RES_BAD_KEY_LEN	0x00200000
-#define CRYPTO_TFM_RES_BAD_KEY_SCHED	0x00400000
-#define CRYPTO_TFM_RES_BAD_BLOCK_LEN	0x00800000
-#define CRYPTO_TFM_RES_BAD_FLAGS	0x01000000
-
-/*
- * Miscellaneous stuff.
- */
 #define CRYPTO_MAX_ALG_NAME		64
 
-/*
- * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
- * declaration) is used to ensure that the crypto_tfm context structure is
- * aligned correctly for the given architecture so that there are no alignment
- * faults for C data types.  In particular, this is required on platforms such
- * as arm where pointers are 32-bit aligned but there are data types such as
- * u64 which require 64-bit alignment.
- */
 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
-
 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
 
 struct scatterlist;
 struct crypto_blkcipher;
 struct crypto_tfm;
 struct crypto_type;
-struct skcipher_givcrypt_request;
 
 struct blkcipher_desc {
-	struct crypto_blkcipher *tfm;
-	void *info;
-	u32 flags;
-};
-
-struct cipher_desc {
-	struct crypto_tfm *tfm;
-	void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-	unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
-			     const u8 *src, unsigned int nbytes);
-	void *info;
+	struct crypto_blkcipher	*tfm;
+	void			*info;
+	u32			flags;
 };
 
 struct blkcipher_alg {
 	int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
-	              unsigned int keylen);
+		      unsigned keylen);
 	int (*encrypt)(struct blkcipher_desc *desc,
 		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes);
+		       unsigned nbytes);
 	int (*decrypt)(struct blkcipher_desc *desc,
 		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes);
-
-	const char *geniv;
-
-	unsigned int min_keysize;
-	unsigned int max_keysize;
-	unsigned int ivsize;
-};
-
-struct cipher_alg {
-	unsigned int cia_min_keysize;
-	unsigned int cia_max_keysize;
-	int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
-	                  unsigned int keylen);
-	void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-	void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-};
-
-struct compress_alg {
-	int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
-			    unsigned int slen, u8 *dst, unsigned int *dlen);
-	int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
-			      unsigned int slen, u8 *dst, unsigned int *dlen);
+		       unsigned nbytes);
 };
 
-
 #define cra_blkcipher	cra_u.blkcipher
-#define cra_cipher	cra_u.cipher
-#define cra_compress	cra_u.compress
 
 struct crypto_alg {
-	struct list_head cra_list;
-	struct list_head cra_users;
-
-	u32 cra_flags;
-	unsigned int cra_blocksize;
-	unsigned int cra_ctxsize;
-	unsigned int cra_alignmask;
-
-	int cra_priority;
-	atomic_t cra_refcnt;
+	struct list_head	cra_list;
+	struct list_head	cra_users;
 
-	char cra_name[CRYPTO_MAX_ALG_NAME];
-	char cra_driver_name[CRYPTO_MAX_ALG_NAME];
+	u32			cra_flags;
+	unsigned		cra_ctxsize;
+	char			cra_name[CRYPTO_MAX_ALG_NAME];
 
 	const struct crypto_type *cra_type;
 
 	union {
 		struct blkcipher_alg blkcipher;
-		struct cipher_alg cipher;
-		struct compress_alg compress;
 	} cra_u;
 
 	int (*cra_init)(struct crypto_tfm *tfm);
 	void (*cra_exit)(struct crypto_tfm *tfm);
-	void (*cra_destroy)(struct crypto_alg *alg);
-
-	struct module *cra_module;
 } CRYPTO_MINALIGN_ATTR;
 
-/*
- * Algorithm registration interface.
- */
 int crypto_register_alg(struct crypto_alg *alg);
-int crypto_unregister_alg(struct crypto_alg *alg);
-int crypto_register_algs(struct crypto_alg *algs, int count);
-int crypto_unregister_algs(struct crypto_alg *algs, int count);
-
-/*
- * Algorithm query interface.
- */
-int crypto_has_alg(const char *name, u32 type, u32 mask);
-
-/*
- * Transforms: user-instantiated objects which encapsulate algorithms
- * and core processing logic.  Managed via crypto_alloc_*() and
- * crypto_free_*(), as well as the various helpers below.
- */
 
 struct blkcipher_tfm {
-	void *iv;
 	int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
-		      unsigned int keylen);
+		      unsigned keylen);
 	int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
-		       struct scatterlist *src, unsigned int nbytes);
+		       struct scatterlist *src, unsigned nbytes);
 	int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
-		       struct scatterlist *src, unsigned int nbytes);
+		       struct scatterlist *src, unsigned nbytes);
 };
 
-struct cipher_tfm {
-	int (*cit_setkey)(struct crypto_tfm *tfm,
-	                  const u8 *key, unsigned int keylen);
-	void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-	void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-};
-
-struct compress_tfm {
-	int (*cot_compress)(struct crypto_tfm *tfm,
-	                    const u8 *src, unsigned int slen,
-	                    u8 *dst, unsigned int *dlen);
-	int (*cot_decompress)(struct crypto_tfm *tfm,
-	                      const u8 *src, unsigned int slen,
-	                      u8 *dst, unsigned int *dlen);
-};
-
-#define crt_blkcipher	crt_u.blkcipher
-#define crt_cipher	crt_u.cipher
-#define crt_compress	crt_u.compress
-
 struct crypto_tfm {
+	u32			crt_flags;
 
-	u32 crt_flags;
-
-	union {
-		struct blkcipher_tfm blkcipher;
-		struct cipher_tfm cipher;
-		struct compress_tfm compress;
-	} crt_u;
+	struct blkcipher_tfm	crt_blkcipher;
 
 	void (*exit)(struct crypto_tfm *tfm);
 
-	struct crypto_alg *__crt_alg;
-
-	void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
-};
-
-struct crypto_blkcipher {
-	struct crypto_tfm base;
-};
-
-struct crypto_cipher {
-	struct crypto_tfm base;
-};
-
-struct crypto_comp {
-	struct crypto_tfm base;
+	struct crypto_alg	*__crt_alg;
+	void			*__crt_ctx[] CRYPTO_MINALIGN_ATTR;
 };
 
-enum {
-	CRYPTOA_UNSPEC,
-	CRYPTOA_ALG,
-	CRYPTOA_TYPE,
-	CRYPTOA_U32,
-	__CRYPTOA_MAX,
-};
-
-#define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
-
-/* Maximum number of (rtattr) parameters for each template. */
-#define CRYPTO_MAX_ATTRS 32
-
-struct crypto_attr_alg {
-	char name[CRYPTO_MAX_ALG_NAME];
-};
-
-struct crypto_attr_type {
-	u32 type;
-	u32 mask;
-};
-
-struct crypto_attr_u32 {
-	u32 num;
-};
-
-/* 
- * Transform user interface.
- */
-
 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
 
@@ -325,110 +107,19 @@ static inline void crypto_free_tfm(struct crypto_tfm *tfm)
 	return crypto_destroy_tfm(tfm, tfm);
 }
 
-int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
-
-/*
- * Transform helpers which query the underlying algorithm.
- */
-static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
-{
-	return tfm->__crt_alg->cra_name;
-}
-
-static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
-{
-	return tfm->__crt_alg->cra_driver_name;
-}
-
-static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
-{
-	return tfm->__crt_alg->cra_priority;
-}
-
 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
 {
 	return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
 }
 
-static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
-{
-	return tfm->__crt_alg->cra_blocksize;
-}
-
-static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
-{
-	return tfm->__crt_alg->cra_alignmask;
-}
-
-static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
-{
-	return tfm->crt_flags;
-}
-
-static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
-{
-	tfm->crt_flags |= flags;
-}
-
-static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
-{
-	tfm->crt_flags &= ~flags;
-}
-
 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);
-}
-
-static inline u32 crypto_skcipher_type(u32 type)
-{
-	type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
-	type |= CRYPTO_ALG_TYPE_BLKCIPHER;
-	return type;
-}
-
-static inline u32 crypto_skcipher_mask(u32 mask)
-{
-	mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
-	mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
-	return mask;
-}
-
-/**
- * DOC: Synchronous Block Cipher API
- *
- * The synchronous block cipher API is used with the ciphers of type
- * CRYPTO_ALG_TYPE_BLKCIPHER (listed as type "blkcipher" in /proc/crypto)
- *
- * Synchronous calls, have a context in the tfm. But since a single tfm can be
- * used in multiple calls and in parallel, this info should not be changeable
- * (unless a lock is used). This applies, for example, to the symmetric key.
- * However, the IV is changeable, so there is an iv field in blkcipher_tfm
- * structure for synchronous blkcipher api. So, its the only state info that can
- * be kept for synchronous calls without using a big lock across a tfm.
- *
- * The block cipher API allows the use of a complete cipher, i.e. a cipher
- * consisting of a template (a block chaining mode) and a single block cipher
- * primitive (e.g. AES).
- *
- * The plaintext data buffer and the ciphertext data buffer are pointed to
- * by using scatter/gather lists. The cipher operation is performed
- * on all segments of the provided scatter/gather lists.
- *
- * The kernel crypto API supports a cipher operation "in-place" which means that
- * the caller may provide the same scatter/gather list for the plaintext and
- * cipher text. After the completion of the cipher operation, the plaintext
- * data is replaced with the ciphertext data in case of an encryption and vice
- * versa for a decryption. The caller must ensure that the scatter/gather lists
- * for the output data point to sufficiently large buffers, i.e. multiples of
- * the block size of the cipher.
- */
+struct crypto_blkcipher {
+	struct crypto_tfm base;
+};
 
 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
 	struct crypto_tfm *tfm)
@@ -443,20 +134,6 @@ static inline struct crypto_blkcipher *crypto_blkcipher_cast(
 	return __crypto_blkcipher_cast(tfm);
 }
 
-/**
- * crypto_alloc_blkcipher() - allocate synchronous block cipher handle
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      blkcipher cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Allocate a cipher handle for a block cipher. The returned struct
- * crypto_blkcipher is the cipher handle that is required for any subsequent
- * API invocation for that block cipher.
- *
- * Return: allocated cipher handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
- */
 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
 	const char *alg_name, u32 type, u32 mask)
 {
@@ -467,455 +144,30 @@ static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
 	return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
 }
 
-static inline struct crypto_tfm *crypto_blkcipher_tfm(
-	struct crypto_blkcipher *tfm)
-{
-	return &tfm->base;
-}
-
-/**
- * crypto_free_blkcipher() - zeroize and free the block cipher handle
- * @tfm: cipher handle to be freed
- */
 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
 {
-	crypto_free_tfm(crypto_blkcipher_tfm(tfm));
-}
-
-/**
- * crypto_has_blkcipher() - Search for the availability of a block cipher
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      block cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Return: true when the block cipher is known to the kernel crypto API; false
- *	   otherwise
- */
-static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
-{
-	type &= ~CRYPTO_ALG_TYPE_MASK;
-	type |= CRYPTO_ALG_TYPE_BLKCIPHER;
-	mask |= CRYPTO_ALG_TYPE_MASK;
-
-	return crypto_has_alg(alg_name, type, mask);
-}
-
-/**
- * crypto_blkcipher_name() - return the name / cra_name from the cipher handle
- * @tfm: cipher handle
- *
- * Return: The character string holding the name of the cipher
- */
-static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
+	crypto_free_tfm(&tfm->base);
 }
 
 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
 	struct crypto_blkcipher *tfm)
 {
-	return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
+	return &tfm->base.crt_blkcipher;
 }
 
-static inline struct blkcipher_alg *crypto_blkcipher_alg(
-	struct crypto_blkcipher *tfm)
-{
-	return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
-}
-
-/**
- * crypto_blkcipher_ivsize() - obtain IV size
- * @tfm: cipher handle
- *
- * The size of the IV for the block cipher referenced by the cipher handle is
- * returned. This IV size may be zero if the cipher does not need an IV.
- *
- * Return: IV size in bytes
- */
-static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
-{
-	return crypto_blkcipher_alg(tfm)->ivsize;
-}
-
-/**
- * crypto_blkcipher_blocksize() - obtain block size of cipher
- * @tfm: cipher handle
- *
- * The block size for the block cipher referenced with the cipher handle is
- * returned. The caller may use that information to allocate appropriate
- * memory for the data returned by the encryption or decryption operation.
- *
- * Return: block size of cipher
- */
-static inline unsigned int crypto_blkcipher_blocksize(
-	struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
-}
-
-static inline unsigned int crypto_blkcipher_alignmask(
-	struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
-}
-
-static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
-}
-
-static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
-					      u32 flags)
-{
-	crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
-}
-
-static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
-						u32 flags)
-{
-	crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
-}
-
-/**
- * crypto_blkcipher_setkey() - set key for cipher
- * @tfm: cipher handle
- * @key: buffer holding the key
- * @keylen: length of the key in bytes
- *
- * The caller provided key is set for the block cipher referenced by the cipher
- * handle.
- *
- * Note, the key length determines the cipher type. Many block ciphers implement
- * different cipher modes depending on the key size, such as AES-128 vs AES-192
- * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128
- * is performed.
- *
- * Return: 0 if the setting of the key was successful; < 0 if an error occurred
- */
 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
-					  const u8 *key, unsigned int keylen)
+					  const u8 *key, unsigned keylen)
 {
-	return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
-						 key, keylen);
+	return crypto_blkcipher_crt(tfm)->setkey(&tfm->base, key, keylen);
 }
 
-/**
- * crypto_blkcipher_encrypt() - encrypt plaintext
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	ciphertext
- * @src: scatter/gather list that holds the plaintext
- * @nbytes: number of bytes of the plaintext to encrypt.
- *
- * Encrypt plaintext data using the IV set by the caller with a preceding
- * call of crypto_blkcipher_set_iv.
- *
- * The blkcipher_desc data structure must be filled by the caller and can
- * reside on the stack. The caller must fill desc as follows: desc.tfm is filled
- * with the block cipher handle; desc.flags is filled with either
- * CRYPTO_TFM_REQ_MAY_SLEEP or 0.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
-					   struct scatterlist *dst,
-					   struct scatterlist *src,
-					   unsigned int nbytes)
-{
-	desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
-	return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_encrypt_iv() - encrypt plaintext with dedicated IV
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	ciphertext
- * @src: scatter/gather list that holds the plaintext
- * @nbytes: number of bytes of the plaintext to encrypt.
- *
- * Encrypt plaintext data with the use of an IV that is solely used for this
- * cipher operation. Any previously set IV is not used.
- *
- * The blkcipher_desc data structure must be filled by the caller and can
- * reside on the stack. The caller must fill desc as follows: desc.tfm is filled
- * with the block cipher handle; desc.info is filled with the IV to be used for
- * the current operation; desc.flags is filled with either
- * CRYPTO_TFM_REQ_MAY_SLEEP or 0.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
 					      struct scatterlist *dst,
 					      struct scatterlist *src,
-					      unsigned int nbytes)
+					      unsigned nbytes)
 {
 	return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
 }
 
-/**
- * crypto_blkcipher_decrypt() - decrypt ciphertext
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	plaintext
- * @src: scatter/gather list that holds the ciphertext
- * @nbytes: number of bytes of the ciphertext to decrypt.
- *
- * Decrypt ciphertext data using the IV set by the caller with a preceding
- * call of crypto_blkcipher_set_iv.
- *
- * The blkcipher_desc data structure must be filled by the caller as documented
- * for the crypto_blkcipher_encrypt call above.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- *
- */
-static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
-					   struct scatterlist *dst,
-					   struct scatterlist *src,
-					   unsigned int nbytes)
-{
-	desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
-	return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_decrypt_iv() - decrypt ciphertext with dedicated IV
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	plaintext
- * @src: scatter/gather list that holds the ciphertext
- * @nbytes: number of bytes of the ciphertext to decrypt.
- *
- * Decrypt ciphertext data with the use of an IV that is solely used for this
- * cipher operation. Any previously set IV is not used.
- *
- * The blkcipher_desc data structure must be filled by the caller as documented
- * for the crypto_blkcipher_encrypt_iv call above.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
-					      struct scatterlist *dst,
-					      struct scatterlist *src,
-					      unsigned int nbytes)
-{
-	return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_set_iv() - set IV for cipher
- * @tfm: cipher handle
- * @src: buffer holding the IV
- * @len: length of the IV in bytes
- *
- * The caller provided IV is set for the block cipher referenced by the cipher
- * handle.
- */
-static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
-					   const u8 *src, unsigned int len)
-{
-	memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
-}
-
-/**
- * crypto_blkcipher_get_iv() - obtain IV from cipher
- * @tfm: cipher handle
- * @dst: buffer filled with the IV
- * @len: length of the buffer dst
- *
- * The caller can obtain the IV set for the block cipher referenced by the
- * cipher handle and store it into the user-provided buffer. If the buffer
- * has an insufficient space, the IV is truncated to fit the buffer.
- */
-static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
-					   u8 *dst, unsigned int len)
-{
-	memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
-}
-
-/**
- * DOC: Single Block Cipher API
- *
- * The single block cipher API is used with the ciphers of type
- * CRYPTO_ALG_TYPE_CIPHER (listed as type "cipher" in /proc/crypto).
- *
- * Using the single block cipher API calls, operations with the basic cipher
- * primitive can be implemented. These cipher primitives exclude any block
- * chaining operations including IV handling.
- *
- * The purpose of this single block cipher API is to support the implementation
- * of templates or other concepts that only need to perform the cipher operation
- * on one block at a time. Templates invoke the underlying cipher primitive
- * block-wise and process either the input or the output data of these cipher
- * operations.
- */
-
-static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
-{
-	return (struct crypto_cipher *)tfm;
-}
-
-static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
-{
-	BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
-	return __crypto_cipher_cast(tfm);
-}
-
-/**
- * crypto_alloc_cipher() - allocate single block cipher handle
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	     single block cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Allocate a cipher handle for a single block cipher. The returned struct
- * crypto_cipher is the cipher handle that is required for any subsequent API
- * invocation for that single block cipher.
- *
- * Return: allocated cipher handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
- */
-static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
-							u32 type, u32 mask)
-{
-	type &= ~CRYPTO_ALG_TYPE_MASK;
-	type |= CRYPTO_ALG_TYPE_CIPHER;
-	mask |= CRYPTO_ALG_TYPE_MASK;
-
-	return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
-}
-
-static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
-{
-	return &tfm->base;
-}
-
-/**
- * crypto_free_cipher() - zeroize and free the single block cipher handle
- * @tfm: cipher handle to be freed
- */
-static inline void crypto_free_cipher(struct crypto_cipher *tfm)
-{
-	crypto_free_tfm(crypto_cipher_tfm(tfm));
-}
-
-/**
- * crypto_has_cipher() - Search for the availability of a single block cipher
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	     single block cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Return: true when the single block cipher is known to the kernel crypto API;
- *	   false otherwise
- */
-static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
-{
-	type &= ~CRYPTO_ALG_TYPE_MASK;
-	type |= CRYPTO_ALG_TYPE_CIPHER;
-	mask |= CRYPTO_ALG_TYPE_MASK;
-
-	return crypto_has_alg(alg_name, type, mask);
-}
-
-static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
-{
-	return &crypto_cipher_tfm(tfm)->crt_cipher;
-}
-
-/**
- * crypto_cipher_blocksize() - obtain block size for cipher
- * @tfm: cipher handle
- *
- * The block size for the single block cipher referenced with the cipher handle
- * tfm is returned. The caller may use that information to allocate appropriate
- * memory for the data returned by the encryption or decryption operation
- *
- * Return: block size of cipher
- */
-static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
-{
-	return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
-}
-
-static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
-{
-	return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
-}
-
-static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
-{
-	return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
-}
-
-static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
-					   u32 flags)
-{
-	crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
-}
-
-static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
-					     u32 flags)
-{
-	crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
-}
-
-/**
- * crypto_cipher_setkey() - set key for cipher
- * @tfm: cipher handle
- * @key: buffer holding the key
- * @keylen: length of the key in bytes
- *
- * The caller provided key is set for the single block cipher referenced by the
- * cipher handle.
- *
- * Note, the key length determines the cipher type. Many block ciphers implement
- * different cipher modes depending on the key size, such as AES-128 vs AES-192
- * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128
- * is performed.
- *
- * Return: 0 if the setting of the key was successful; < 0 if an error occurred
- */
-static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
-                                       const u8 *key, unsigned int keylen)
-{
-	return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
-						  key, keylen);
-}
-
-/**
- * crypto_cipher_encrypt_one() - encrypt one block of plaintext
- * @tfm: cipher handle
- * @dst: points to the buffer that will be filled with the ciphertext
- * @src: buffer holding the plaintext to be encrypted
- *
- * Invoke the encryption operation of one block. The caller must ensure that
- * the plaintext and ciphertext buffers are at least one block in size.
- */
-static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
-					     u8 *dst, const u8 *src)
-{
-	crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
-						dst, src);
-}
-
-/**
- * crypto_cipher_decrypt_one() - decrypt one block of ciphertext
- * @tfm: cipher handle
- * @dst: points to the buffer that will be filled with the plaintext
- * @src: buffer holding the ciphertext to be decrypted
- *
- * Invoke the decryption operation of one block. The caller must ensure that
- * the plaintext and ciphertext buffers are at least one block in size.
- */
-static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
-					     u8 *dst, const u8 *src)
-{
-	crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
-						dst, src);
-}
-
 #endif	/* _LINUX_CRYPTO_H */