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/kernel.h>
23 #include <linux/rwsem.h>
24 #include <linux/slab.h>
25 #include <asm/kmap_types.h>
27 extern struct list_head crypto_alg_list;
28 extern struct rw_semaphore crypto_alg_sem;
30 extern enum km_type crypto_km_types[];
32 static inline enum km_type crypto_kmap_type(int out)
34 return crypto_km_types[(in_softirq() ? 2 : 0) + out];
37 static inline void *crypto_kmap(struct page *page, int out)
39 return kmap_atomic(page, crypto_kmap_type(out));
42 static inline void crypto_kunmap(void *vaddr, int out)
44 kunmap_atomic(vaddr, crypto_kmap_type(out));
47 static inline void crypto_yield(struct crypto_tfm *tfm)
49 if (tfm->crt_flags & CRYPTO_TFM_REQ_MAY_SLEEP)
53 #ifdef CONFIG_CRYPTO_HMAC
54 int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
55 void crypto_free_hmac_block(struct crypto_tfm *tfm);
57 static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
62 static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
67 void __init crypto_init_proc(void);
68 void __exit crypto_exit_proc(void);
70 static inline void crypto_init_proc(void)
72 static inline void crypto_exit_proc(void)
76 static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
79 return alg->cra_ctxsize;
82 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg,
85 unsigned int len = alg->cra_ctxsize;
87 switch (flags & CRYPTO_TFM_MODE_MASK) {
88 case CRYPTO_TFM_MODE_CBC:
89 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
90 len += alg->cra_blocksize;
97 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg,
100 return alg->cra_ctxsize;
103 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
104 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
105 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
107 int crypto_init_digest_ops(struct crypto_tfm *tfm);
108 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
109 int crypto_init_compress_ops(struct crypto_tfm *tfm);
111 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
112 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
113 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
115 #endif /* _CRYPTO_INTERNAL_H */