X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Finternal.h;h=32f4c214560315ccc284346499f6b9428bae1d66;hb=1a747ee0cc11a198f9e2435add821bd0dfedb7c1;hp=e68e43886d3cc23439f30210e88b517911bf395e;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=safe%2Fjmp%2Flinux-2.6 diff --git a/crypto/internal.h b/crypto/internal.h index e68e438..32f4c21 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -2,6 +2,7 @@ * Cryptographic API. * * Copyright (c) 2002 James Morris + * Copyright (c) 2005 Herbert Xu * * 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 @@ -11,82 +12,136 @@ */ #ifndef _CRYPTO_INTERNAL_H #define _CRYPTO_INTERNAL_H -#include + +#include +#include #include #include #include #include -#include -#include +#include +#include +#include +#include +#include +#include + +/* Crypto notification events. */ +enum { + CRYPTO_MSG_ALG_REQUEST, + CRYPTO_MSG_ALG_REGISTER, + CRYPTO_MSG_ALG_UNREGISTER, + CRYPTO_MSG_TMPL_REGISTER, + CRYPTO_MSG_TMPL_UNREGISTER, +}; + +struct crypto_instance; +struct crypto_template; + +struct crypto_larval { + struct crypto_alg alg; + struct crypto_alg *adult; + struct completion completion; + u32 mask; +}; + +extern struct list_head crypto_alg_list; +extern struct rw_semaphore crypto_alg_sem; +extern struct blocking_notifier_head crypto_chain; -extern enum km_type crypto_km_types[]; +#ifdef CONFIG_PROC_FS +void __init crypto_init_proc(void); +void __exit crypto_exit_proc(void); +#else +static inline void crypto_init_proc(void) +{ } +static inline void crypto_exit_proc(void) +{ } +#endif -static inline enum km_type crypto_kmap_type(int out) +static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg) { - return crypto_km_types[(in_softirq() ? 2 : 0) + out]; + unsigned int len = alg->cra_ctxsize; + + if (alg->cra_alignmask) { + len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1); + len += alg->cra_digest.dia_digestsize; + } + + return len; } -static inline void *crypto_kmap(struct page *page, int out) +static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg) { - return kmap_atomic(page, crypto_kmap_type(out)); + return alg->cra_ctxsize; } -static inline void crypto_kunmap(void *vaddr, int out) +static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg) { - kunmap_atomic(vaddr, crypto_kmap_type(out)); + return alg->cra_ctxsize; } -static inline void crypto_yield(struct crypto_tfm *tfm) +struct crypto_alg *crypto_mod_get(struct crypto_alg *alg); +struct crypto_alg *__crypto_alg_lookup(const char *name, u32 type, u32 mask); +struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask); + +int crypto_init_digest_ops(struct crypto_tfm *tfm); +int crypto_init_cipher_ops(struct crypto_tfm *tfm); +int crypto_init_compress_ops(struct crypto_tfm *tfm); + +void crypto_exit_digest_ops(struct crypto_tfm *tfm); +void crypto_exit_cipher_ops(struct crypto_tfm *tfm); +void crypto_exit_compress_ops(struct crypto_tfm *tfm); + +void crypto_larval_kill(struct crypto_alg *alg); +struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask); +void crypto_larval_error(const char *name, u32 type, u32 mask); + +void crypto_shoot_alg(struct crypto_alg *alg); +struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, + u32 mask); + +int crypto_register_instance(struct crypto_template *tmpl, + struct crypto_instance *inst); + +int crypto_register_notifier(struct notifier_block *nb); +int crypto_unregister_notifier(struct notifier_block *nb); + +static inline void crypto_alg_put(struct crypto_alg *alg) { - if (!in_softirq()) - cond_resched(); + if (atomic_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy) + alg->cra_destroy(alg); } -static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm) +static inline int crypto_tmpl_get(struct crypto_template *tmpl) { - return (void *)&tfm[1]; + return try_module_get(tmpl->module); } -struct crypto_alg *crypto_alg_lookup(const char *name); - -/* A far more intelligent version of this is planned. For now, just - * try an exact match on the name of the algorithm. */ -static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name) +static inline void crypto_tmpl_put(struct crypto_template *tmpl) { - return try_then_request_module(crypto_alg_lookup(name), name); + module_put(tmpl->module); } -#ifdef CONFIG_CRYPTO_HMAC -int crypto_alloc_hmac_block(struct crypto_tfm *tfm); -void crypto_free_hmac_block(struct crypto_tfm *tfm); -#else -static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm) +static inline int crypto_is_larval(struct crypto_alg *alg) { - return 0; + return alg->cra_flags & CRYPTO_ALG_LARVAL; } -static inline void crypto_free_hmac_block(struct crypto_tfm *tfm) -{ } -#endif - -#ifdef CONFIG_PROC_FS -void __init crypto_init_proc(void); -#else -static inline void crypto_init_proc(void) -{ } -#endif - -int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags); -int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags); -int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags); +static inline int crypto_is_dead(struct crypto_alg *alg) +{ + return alg->cra_flags & CRYPTO_ALG_DEAD; +} -int crypto_init_digest_ops(struct crypto_tfm *tfm); -int crypto_init_cipher_ops(struct crypto_tfm *tfm); -int crypto_init_compress_ops(struct crypto_tfm *tfm); +static inline int crypto_is_moribund(struct crypto_alg *alg) +{ + return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING); +} -void crypto_exit_digest_ops(struct crypto_tfm *tfm); -void crypto_exit_cipher_ops(struct crypto_tfm *tfm); -void crypto_exit_compress_ops(struct crypto_tfm *tfm); +static inline int crypto_notify(unsigned long val, void *v) +{ + return blocking_notifier_call_chain(&crypto_chain, val, v); +} #endif /* _CRYPTO_INTERNAL_H */