/* SPDX-License-Identifier: GPL-2.0-or-later *//* * Symmetric key ciphers. *  * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> */ #ifndef _CRYPTO_INTERNAL_SKCIPHER_H#define _CRYPTO_INTERNAL_SKCIPHER_H #include <crypto/algapi.h>#include <crypto/internal/cipher.h>#include <crypto/skcipher.h>#include <linux/types.h> /* * Set this if your algorithm is sync but needs a reqsize larger * than MAX_SYNC_SKCIPHER_REQSIZE. * * Reuse bit that is specific to hash algorithms. */#define CRYPTO_ALG_SKCIPHER_REQSIZE_LARGE CRYPTO_ALG_OPTIONAL_KEY 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 lskcipher_instance {	void (*free)(struct lskcipher_instance *inst);	union {		struct {			char head[offsetof(struct lskcipher_alg, co.base)];			struct crypto_instance base;		} s;		struct lskcipher_alg alg;	};}; struct crypto_skcipher_spawn {	struct crypto_spawn base;}; struct crypto_lskcipher_spawn {	struct crypto_spawn base;}; struct skcipher_walk {	union {		/* Virtual address of the source. */		struct {			struct {				const void *const addr;			} virt;		} src; 		/* Private field for the API, do not use. */		struct scatter_walk in;	}; 	union {		/* Virtual address of the destination. */		struct {			struct {				void *const addr;			} virt;		} dst; 		/* Private field for the API, do not use. */		struct scatter_walk out;	}; 	unsigned int nbytes;	unsigned int total; 	u8 *page;	u8 *buffer;	u8 *oiv;	void *iv; 	unsigned int ivsize; 	int flags;	unsigned int blocksize;	unsigned int stride;	unsigned int alignmask;}; static inline struct crypto_instance *skcipher_crypto_instance(	struct skcipher_instance *inst){	return &inst->s.base;} static inline struct crypto_instance *lskcipher_crypto_instance(	struct lskcipher_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 struct lskcipher_instance *lskcipher_alg_instance(	struct crypto_lskcipher *lskcipher){	return container_of(crypto_lskcipher_alg(lskcipher),			    struct lskcipher_instance, alg);} static inline void *skcipher_instance_ctx(struct skcipher_instance *inst){	return crypto_instance_ctx(skcipher_crypto_instance(inst));} static inline void *lskcipher_instance_ctx(struct lskcipher_instance *inst){	return crypto_instance_ctx(lskcipher_crypto_instance(inst));} static inline void skcipher_request_complete(struct skcipher_request *req, int err){	crypto_request_complete(&req->base, err);} int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn,			 struct crypto_instance *inst,			 const char *name, u32 type, u32 mask); int crypto_grab_lskcipher(struct crypto_lskcipher_spawn *spawn,			  struct crypto_instance *inst,			  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 void crypto_drop_lskcipher(struct crypto_lskcipher_spawn *spawn){	crypto_drop_spawn(&spawn->base);} static inline struct lskcipher_alg *crypto_lskcipher_spawn_alg(	struct crypto_lskcipher_spawn *spawn){	return container_of(spawn->base.alg, struct lskcipher_alg, co.base);} static inline struct skcipher_alg_common *crypto_spawn_skcipher_alg_common(	struct crypto_skcipher_spawn *spawn){	return container_of(spawn->base.alg, struct skcipher_alg_common, base);} static inline struct lskcipher_alg *crypto_spawn_lskcipher_alg(	struct crypto_lskcipher_spawn *spawn){	return crypto_lskcipher_spawn_alg(spawn);} static inline struct crypto_skcipher *crypto_spawn_skcipher(	struct crypto_skcipher_spawn *spawn){	return crypto_spawn_tfm2(&spawn->base);} static inline struct crypto_lskcipher *crypto_spawn_lskcipher(	struct crypto_lskcipher_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;} static inline void crypto_skcipher_set_reqsize_dma(	struct crypto_skcipher *skcipher, unsigned int reqsize){	reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);	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 crypto_register_lskcipher(struct lskcipher_alg *alg);void crypto_unregister_lskcipher(struct lskcipher_alg *alg);int crypto_register_lskciphers(struct lskcipher_alg *algs, int count);void crypto_unregister_lskciphers(struct lskcipher_alg *algs, int count);int lskcipher_register_instance(struct crypto_template *tmpl,				struct lskcipher_instance *inst); int skcipher_walk_done(struct skcipher_walk *walk, int res);int skcipher_walk_virt(struct skcipher_walk *__restrict walk,		       struct skcipher_request *__restrict req,		       bool atomic);int skcipher_walk_aead_encrypt(struct skcipher_walk *__restrict walk,			       struct aead_request *__restrict req,			       bool atomic);int skcipher_walk_aead_decrypt(struct skcipher_walk *__restrict walk,			       struct aead_request *__restrict req,			       bool atomic); static inline void skcipher_walk_abort(struct skcipher_walk *walk){	skcipher_walk_done(walk, -ECANCELED);} static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm){	return crypto_tfm_ctx(&tfm->base);} static inline void *crypto_lskcipher_ctx(struct crypto_lskcipher *tfm){	return crypto_tfm_ctx(&tfm->base);} static inline void *crypto_skcipher_ctx_dma(struct crypto_skcipher *tfm){	return crypto_tfm_ctx_dma(&tfm->base);} static inline bool crypto_skcipher_tested(struct crypto_skcipher *tfm){	struct crypto_tfm *tfm_base = crypto_skcipher_tfm(tfm); 	return tfm_base->__crt_alg->cra_flags & CRYPTO_ALG_TESTED;} static inline void *skcipher_request_ctx(struct skcipher_request *req){	return req->__ctx;} static inline void *skcipher_request_ctx_dma(struct skcipher_request *req){	unsigned int align = crypto_dma_align(); 	if (align <= crypto_tfm_ctx_alignment())		align = 1; 	return PTR_ALIGN(skcipher_request_ctx(req), align);} static inline u32 skcipher_request_flags(struct skcipher_request *req){	return req->base.flags;} /* Helpers for simple block cipher modes of operation */struct skcipher_ctx_simple {	struct crypto_cipher *cipher;	/* underlying block cipher */};static inline struct crypto_cipher *skcipher_cipher_simple(struct crypto_skcipher *tfm){	struct skcipher_ctx_simple *ctx = crypto_skcipher_ctx(tfm); 	return ctx->cipher;} struct skcipher_instance *skcipher_alloc_instance_simple(	struct crypto_template *tmpl, struct rtattr **tb); static inline struct crypto_alg *skcipher_ialg_simple(	struct skcipher_instance *inst){	struct crypto_cipher_spawn *spawn = skcipher_instance_ctx(inst); 	return crypto_spawn_cipher_alg(spawn);} static inline struct crypto_lskcipher *lskcipher_cipher_simple(	struct crypto_lskcipher *tfm){	struct crypto_lskcipher **ctx = crypto_lskcipher_ctx(tfm); 	return *ctx;} struct lskcipher_instance *lskcipher_alloc_instance_simple(	struct crypto_template *tmpl, struct rtattr **tb); static inline struct lskcipher_alg *lskcipher_ialg_simple(	struct lskcipher_instance *inst){	struct crypto_lskcipher_spawn *spawn = lskcipher_instance_ctx(inst); 	return crypto_lskcipher_spawn_alg(spawn);} #endif	/* _CRYPTO_INTERNAL_SKCIPHER_H */