4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
13 #ifndef _CRYPTO_INTERNAL_H
14 #define _CRYPTO_INTERNAL_H
16 #include <crypto/algapi.h>
18 #include <linux/highmem.h>
19 #include <linux/interrupt.h>
20 #include <linux/init.h>
21 #include <linux/list.h>
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/rwsem.h>
25 #include <linux/slab.h>
26 #include <asm/kmap_types.h>
28 struct crypto_instance;
29 struct crypto_template;
31 extern struct list_head crypto_alg_list;
32 extern struct rw_semaphore crypto_alg_sem;
34 extern enum km_type crypto_km_types[];
36 static inline enum km_type crypto_kmap_type(int out)
38 return crypto_km_types[(in_softirq() ? 2 : 0) + out];
41 static inline void *crypto_kmap(struct page *page, int out)
43 return kmap_atomic(page, crypto_kmap_type(out));
46 static inline void crypto_kunmap(void *vaddr, int out)
48 kunmap_atomic(vaddr, crypto_kmap_type(out));
51 static inline void crypto_yield(struct crypto_tfm *tfm)
53 if (tfm->crt_flags & CRYPTO_TFM_REQ_MAY_SLEEP)
57 #ifdef CONFIG_CRYPTO_HMAC
58 int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
59 void crypto_free_hmac_block(struct crypto_tfm *tfm);
61 static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
66 static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
71 void __init crypto_init_proc(void);
72 void __exit crypto_exit_proc(void);
74 static inline void crypto_init_proc(void)
76 static inline void crypto_exit_proc(void)
80 static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
83 return alg->cra_ctxsize;
86 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg,
89 unsigned int len = alg->cra_ctxsize;
91 switch (flags & CRYPTO_TFM_MODE_MASK) {
92 case CRYPTO_TFM_MODE_CBC:
93 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
94 len += alg->cra_blocksize;
101 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg,
104 return alg->cra_ctxsize;
107 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
108 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
109 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
111 int crypto_init_digest_ops(struct crypto_tfm *tfm);
112 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
113 int crypto_init_compress_ops(struct crypto_tfm *tfm);
115 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
116 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
117 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
119 int crypto_register_instance(struct crypto_template *tmpl,
120 struct crypto_instance *inst);
122 static inline int crypto_tmpl_get(struct crypto_template *tmpl)
124 return try_module_get(tmpl->module);
127 static inline void crypto_tmpl_put(struct crypto_template *tmpl)
129 module_put(tmpl->module);
132 #endif /* _CRYPTO_INTERNAL_H */