/* * Symmetric key ciphers. *  * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option)  * any later version. * */ #ifndef _CRYPTO_INTERNAL_SKCIPHER_H#define _CRYPTO_INTERNAL_SKCIPHER_H #include <crypto/algapi.h>#include <crypto/skcipher.h>#include <linux/list.h>#include <linux/types.h> struct aead_request;struct rtattr; struct skcipher_instance {	void (*free)(struct skcipher_instance *inst);	union {		struct {			char head[offsetof(struct skcipher_alg, base)];			struct crypto_instance base;		} s;		struct skcipher_alg alg;	};}; struct crypto_skcipher_spawn {	struct crypto_spawn base;}; struct skcipher_walk {	union {		struct {			struct page *page;			unsigned long offset;		} phys; 		struct {			u8 *page;			void *addr;		} virt;	} src, dst; 	struct scatter_walk in;	unsigned int nbytes; 	struct scatter_walk out;	unsigned int total; 	struct list_head buffers; 	u8 *page;	u8 *buffer;	u8 *oiv;	void *iv; 	unsigned int ivsize; 	int flags;	unsigned int blocksize;	unsigned int stride;	unsigned int alignmask;}; extern const struct crypto_type crypto_givcipher_type; static inline struct crypto_instance *skcipher_crypto_instance(	struct skcipher_instance *inst){	return &inst->s.base;} static inline struct skcipher_instance *skcipher_alg_instance(	struct crypto_skcipher *skcipher){	return container_of(crypto_skcipher_alg(skcipher),			    struct skcipher_instance, alg);} static inline void *skcipher_instance_ctx(struct skcipher_instance *inst){	return crypto_instance_ctx(skcipher_crypto_instance(inst));} static inline void skcipher_request_complete(struct skcipher_request *req, int err){	req->base.complete(&req->base, err);} static inline void crypto_set_skcipher_spawn(	struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst){	crypto_set_spawn(&spawn->base, inst);} int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,			 u32 type, u32 mask); static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn){	crypto_drop_spawn(&spawn->base);} static inline struct skcipher_alg *crypto_skcipher_spawn_alg(	struct crypto_skcipher_spawn *spawn){	return container_of(spawn->base.alg, struct skcipher_alg, base);} static inline struct skcipher_alg *crypto_spawn_skcipher_alg(	struct crypto_skcipher_spawn *spawn){	return crypto_skcipher_spawn_alg(spawn);} static inline struct crypto_skcipher *crypto_spawn_skcipher(	struct crypto_skcipher_spawn *spawn){	return crypto_spawn_tfm2(&spawn->base);} static inline void crypto_skcipher_set_reqsize(	struct crypto_skcipher *skcipher, unsigned int reqsize){	skcipher->reqsize = reqsize;} int crypto_register_skcipher(struct skcipher_alg *alg);void crypto_unregister_skcipher(struct skcipher_alg *alg);int crypto_register_skciphers(struct skcipher_alg *algs, int count);void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);int skcipher_register_instance(struct crypto_template *tmpl,			       struct skcipher_instance *inst); int skcipher_walk_done(struct skcipher_walk *walk, int err);int skcipher_walk_virt(struct skcipher_walk *walk,		       struct skcipher_request *req,		       bool atomic);void skcipher_walk_atomise(struct skcipher_walk *walk);int skcipher_walk_async(struct skcipher_walk *walk,			struct skcipher_request *req);int skcipher_walk_aead(struct skcipher_walk *walk, struct aead_request *req,		       bool atomic);int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,			       struct aead_request *req, bool atomic);int skcipher_walk_aead_decrypt(struct skcipher_walk *walk,			       struct aead_request *req, bool atomic);void skcipher_walk_complete(struct skcipher_walk *walk, int err); static inline void ablkcipher_request_complete(struct ablkcipher_request *req,					       int err){	req->base.complete(&req->base, err);} static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req){	return req->base.flags;} static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm){	return crypto_tfm_ctx(&tfm->base);} static inline void *skcipher_request_ctx(struct skcipher_request *req){	return req->__ctx;} static inline u32 skcipher_request_flags(struct skcipher_request *req){	return req->base.flags;} static inline unsigned int crypto_skcipher_alg_min_keysize(	struct skcipher_alg *alg){	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==	    CRYPTO_ALG_TYPE_BLKCIPHER)		return alg->base.cra_blkcipher.min_keysize; 	if (alg->base.cra_ablkcipher.encrypt)		return alg->base.cra_ablkcipher.min_keysize; 	return alg->min_keysize;} static inline unsigned int crypto_skcipher_alg_max_keysize(	struct skcipher_alg *alg){	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==	    CRYPTO_ALG_TYPE_BLKCIPHER)		return alg->base.cra_blkcipher.max_keysize; 	if (alg->base.cra_ablkcipher.encrypt)		return alg->base.cra_ablkcipher.max_keysize; 	return alg->max_keysize;} #endif	/* _CRYPTO_INTERNAL_SKCIPHER_H */