/* SPDX-License-Identifier: GPL-2.0-or-later *//* * Hash algorithms. *  * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au> */ #ifndef _CRYPTO_INTERNAL_HASH_H#define _CRYPTO_INTERNAL_HASH_H #include <crypto/algapi.h>#include <crypto/hash.h> struct ahash_request;struct scatterlist; struct crypto_hash_walk {	char *data; 	unsigned int offset;	unsigned int alignmask; 	struct page *pg;	unsigned int entrylen; 	unsigned int total;	struct scatterlist *sg; 	unsigned int flags;}; struct ahash_instance {	void (*free)(struct ahash_instance *inst);	union {		struct {			char head[offsetof(struct ahash_alg, halg.base)];			struct crypto_instance base;		} s;		struct ahash_alg alg;	};}; struct shash_instance {	void (*free)(struct shash_instance *inst);	union {		struct {			char head[offsetof(struct shash_alg, base)];			struct crypto_instance base;		} s;		struct shash_alg alg;	};}; struct crypto_ahash_spawn {	struct crypto_spawn base;}; struct crypto_shash_spawn {	struct crypto_spawn base;}; int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);int crypto_hash_walk_first(struct ahash_request *req,			   struct crypto_hash_walk *walk);int crypto_ahash_walk_first(struct ahash_request *req,			   struct crypto_hash_walk *walk); static inline int crypto_ahash_walk_done(struct crypto_hash_walk *walk,					 int err){	return crypto_hash_walk_done(walk, err);} static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk){	return !(walk->entrylen | walk->total);} static inline int crypto_ahash_walk_last(struct crypto_hash_walk *walk){	return crypto_hash_walk_last(walk);} int crypto_register_ahash(struct ahash_alg *alg);void crypto_unregister_ahash(struct ahash_alg *alg);int crypto_register_ahashes(struct ahash_alg *algs, int count);void crypto_unregister_ahashes(struct ahash_alg *algs, int count);int ahash_register_instance(struct crypto_template *tmpl,			    struct ahash_instance *inst); int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,		    unsigned int keylen); static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg){	return alg->setkey != shash_no_setkey;} static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg){	return crypto_shash_alg_has_setkey(alg) &&		!(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);} bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg); int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,		      struct crypto_instance *inst,		      const char *name, u32 type, u32 mask); static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn){	crypto_drop_spawn(&spawn->base);} static inline struct hash_alg_common *crypto_spawn_ahash_alg(	struct crypto_ahash_spawn *spawn){	return __crypto_hash_alg_common(spawn->base.alg);} int crypto_register_shash(struct shash_alg *alg);void crypto_unregister_shash(struct shash_alg *alg);int crypto_register_shashes(struct shash_alg *algs, int count);void crypto_unregister_shashes(struct shash_alg *algs, int count);int shash_register_instance(struct crypto_template *tmpl,			    struct shash_instance *inst);void shash_free_singlespawn_instance(struct shash_instance *inst); int crypto_grab_shash(struct crypto_shash_spawn *spawn,		      struct crypto_instance *inst,		      const char *name, u32 type, u32 mask); static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn){	crypto_drop_spawn(&spawn->base);} static inline struct shash_alg *crypto_spawn_shash_alg(	struct crypto_shash_spawn *spawn){	return __crypto_shash_alg(spawn->base.alg);} int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc); int crypto_init_shash_ops_async(struct crypto_tfm *tfm); static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm){	return crypto_tfm_ctx(crypto_ahash_tfm(tfm));} static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg){	return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,			    halg);} static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,					    unsigned int reqsize){	tfm->reqsize = reqsize;} static inline struct crypto_instance *ahash_crypto_instance(	struct ahash_instance *inst){	return &inst->s.base;} static inline struct ahash_instance *ahash_instance(	struct crypto_instance *inst){	return container_of(inst, struct ahash_instance, s.base);} static inline void *ahash_instance_ctx(struct ahash_instance *inst){	return crypto_instance_ctx(ahash_crypto_instance(inst));} static inline void ahash_request_complete(struct ahash_request *req, int err){	req->base.complete(&req->base, err);} static inline u32 ahash_request_flags(struct ahash_request *req){	return req->base.flags;} static inline struct crypto_ahash *crypto_spawn_ahash(	struct crypto_ahash_spawn *spawn){	return crypto_spawn_tfm2(&spawn->base);} static inline int ahash_enqueue_request(struct crypto_queue *queue,					     struct ahash_request *request){	return crypto_enqueue_request(queue, &request->base);} static inline struct ahash_request *ahash_dequeue_request(	struct crypto_queue *queue){	return ahash_request_cast(crypto_dequeue_request(queue));} static inline void *crypto_shash_ctx(struct crypto_shash *tfm){	return crypto_tfm_ctx(&tfm->base);} static inline struct crypto_instance *shash_crypto_instance(	struct shash_instance *inst){	return &inst->s.base;} static inline struct shash_instance *shash_instance(	struct crypto_instance *inst){	return container_of(inst, struct shash_instance, s.base);} static inline struct shash_instance *shash_alg_instance(	struct crypto_shash *shash){	return shash_instance(crypto_tfm_alg_instance(&shash->base));} static inline void *shash_instance_ctx(struct shash_instance *inst){	return crypto_instance_ctx(shash_crypto_instance(inst));} static inline struct crypto_shash *crypto_spawn_shash(	struct crypto_shash_spawn *spawn){	return crypto_spawn_tfm2(&spawn->base);} static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm){	return crypto_tfm_ctx_aligned(&tfm->base);} static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm){	return container_of(tfm, struct crypto_shash, base);} #endif	/* _CRYPTO_INTERNAL_HASH_H */