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/init.h>
18 #include <asm/hardirq.h>
19 #include <asm/softirq.h>
20 #include <asm/kmap_types.h>
21
22 extern enum km_type crypto_km_types[];
23
crypto_kmap_type(int out)24 static inline enum km_type crypto_kmap_type(int out)
25 {
26 return crypto_km_types[(in_softirq() ? 2 : 0) + out];
27 }
28
crypto_kmap(struct page * page,int out)29 static inline void *crypto_kmap(struct page *page, int out)
30 {
31 return kmap_atomic(page, crypto_kmap_type(out));
32 }
33
crypto_kunmap(void * vaddr,int out)34 static inline void crypto_kunmap(void *vaddr, int out)
35 {
36 kunmap_atomic(vaddr, crypto_kmap_type(out));
37 }
38
crypto_yield(struct crypto_tfm * tfm)39 static inline void crypto_yield(struct crypto_tfm *tfm)
40 {
41 if (!in_softirq())
42 cond_resched();
43 }
44
crypto_tfm_ctx(struct crypto_tfm * tfm)45 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
46 {
47 return (void *)&tfm[1];
48 }
49
50 struct crypto_alg *crypto_alg_lookup(const char *name);
51
52 #ifdef CONFIG_KMOD
53 void crypto_alg_autoload(const char *name);
54 struct crypto_alg *crypto_alg_mod_lookup(const char *name);
55 #else
crypto_alg_mod_lookup(const char * name)56 static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
57 {
58 return crypto_alg_lookup(name);
59 }
60 #endif
61
62 #ifdef CONFIG_CRYPTO_HMAC
63 int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
64 void crypto_free_hmac_block(struct crypto_tfm *tfm);
65 #else
crypto_alloc_hmac_block(struct crypto_tfm * tfm)66 static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
67 {
68 return 0;
69 }
70
crypto_free_hmac_block(struct crypto_tfm * tfm)71 static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
72 { }
73 #endif
74
75 #ifdef CONFIG_PROC_FS
76 void __init crypto_init_proc(void);
77 #else
crypto_init_proc(void)78 static inline void crypto_init_proc(void)
79 { }
80 #endif
81
82 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
83 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
84 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
85
86 int crypto_init_digest_ops(struct crypto_tfm *tfm);
87 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
88 int crypto_init_compress_ops(struct crypto_tfm *tfm);
89
90 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
91 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
92 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
93
94 #endif /* _CRYPTO_INTERNAL_H */
95
96