root/crypto/internal.h

Revision 1, 2.4 kB (checked in by dkaplan1, 7 years ago)

Initial import

Line 
1 /*
2  * Cryptographic API.
3  *
4  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5  *
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)
9  * any later version.
10  *
11  */
12 #ifndef _CRYPTO_INTERNAL_H
13 #define _CRYPTO_INTERNAL_H
14 #include <linux/crypto.h>
15 #include <linux/mm.h>
16 #include <linux/highmem.h>
17 #include <linux/interrupt.h>
18 #include <linux/init.h>
19 #include <linux/kmod.h>
20 #include <asm/hardirq.h>
21 #include <asm/kmap_types.h>
22
23 extern enum km_type crypto_km_types[];
24
25 static inline enum km_type crypto_kmap_type(int out)
26 {
27         return crypto_km_types[(in_softirq() ? 2 : 0) + out];
28 }
29
30 static inline void *crypto_kmap(struct page *page, int out)
31 {
32         return kmap_atomic(page, crypto_kmap_type(out));
33 }
34
35 static inline void crypto_kunmap(void *vaddr, int out)
36 {
37         kunmap_atomic(vaddr, crypto_kmap_type(out));
38 }
39
40 static inline void crypto_yield(struct crypto_tfm *tfm)
41 {
42         if (!in_softirq())
43                 cond_resched();
44 }
45
46 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
47 {
48         return (void *)&tfm[1];
49 }
50
51 struct crypto_alg *crypto_alg_lookup(const char *name);
52
53 /* A far more intelligent version of this is planned.  For now, just
54  * try an exact match on the name of the algorithm. */
55 static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
56 {
57         return try_then_request_module(crypto_alg_lookup(name), name);
58 }
59
60 #ifdef CONFIG_CRYPTO_HMAC
61 int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
62 void crypto_free_hmac_block(struct crypto_tfm *tfm);
63 #else
64 static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
65 {
66         return 0;
67 }
68
69 static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
70 { }
71 #endif
72
73 #ifdef CONFIG_PROC_FS
74 void __init crypto_init_proc(void);
75 #else
76 static inline void crypto_init_proc(void)
77 { }
78 #endif
79
80 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
81 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
82 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
83
84 int crypto_init_digest_ops(struct crypto_tfm *tfm);
85 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
86 int crypto_init_compress_ops(struct crypto_tfm *tfm);
87
88 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
89 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
90 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
91
92 #endif  /* _CRYPTO_INTERNAL_H */
93
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