4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
12 #ifndef _CRYPTO_INTERNAL_H
13 #define _CRYPTO_INTERNAL_H
14 #include <linux/crypto.h>
16 #include <linux/highmem.h>
17 #include <linux/interrupt.h>
18 #include <linux/init.h>
19 #include <linux/kernel.h>
20 #include <asm/kmap_types.h>
22 extern enum km_type crypto_km_types[];
24 static inline enum km_type crypto_kmap_type(int out)
26 return crypto_km_types[(in_softirq() ? 2 : 0) + out];
29 static inline void *crypto_kmap(struct page *page, int out)
31 return kmap_atomic(page, crypto_kmap_type(out));
34 static inline void crypto_kunmap(void *vaddr, int out)
36 kunmap_atomic(vaddr, crypto_kmap_type(out));
39 static inline void crypto_yield(struct crypto_tfm *tfm)
45 #ifdef CONFIG_CRYPTO_HMAC
46 int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
47 void crypto_free_hmac_block(struct crypto_tfm *tfm);
49 static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
54 static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
59 void __init crypto_init_proc(void);
61 static inline void crypto_init_proc(void)
65 static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
68 return alg->cra_ctxsize;
71 static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg,
74 unsigned int len = alg->cra_ctxsize;
76 switch (flags & CRYPTO_TFM_MODE_MASK) {
77 case CRYPTO_TFM_MODE_CBC:
78 len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
79 len += alg->cra_blocksize;
86 static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg,
89 return alg->cra_ctxsize;
92 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
93 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
94 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
96 int crypto_init_digest_ops(struct crypto_tfm *tfm);
97 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
98 int crypto_init_compress_ops(struct crypto_tfm *tfm);
100 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
101 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
102 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
104 #endif /* _CRYPTO_INTERNAL_H */