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    Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/crypto/internal.h

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    Revision 630 - (show annotations) (download)
    Wed Mar 4 11:03:09 2009 UTC (15 years, 2 months ago) by niro
    File MIME type: text/plain
    File size: 2440 byte(s) 
    Tag kernel26-2.6.12-alx-r9
    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/kmap_types.h>
    21
    22 extern enum km_type crypto_km_types[];
    23
    24 static inline enum km_type crypto_kmap_type(int out)
    25 {
    26 return crypto_km_types[(in_softirq() ? 2 : 0) + out];
    27 }
    28
    29 static inline void *crypto_kmap(struct page *page, int out)
    30 {
    31 return kmap_atomic(page, crypto_kmap_type(out));
    32 }
    33
    34 static inline void crypto_kunmap(void *vaddr, int out)
    35 {
    36 kunmap_atomic(vaddr, crypto_kmap_type(out));
    37 }
    38
    39 static inline void crypto_yield(struct crypto_tfm *tfm)
    40 {
    41 if (!in_atomic())
    42 cond_resched();
    43 }
    44
    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 /* A far more intelligent version of this is planned. For now, just
    53 * try an exact match on the name of the algorithm. */
    54 static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
    55 {
    56 return try_then_request_module(crypto_alg_lookup(name), name);
    57 }
    58
    59 #ifdef CONFIG_CRYPTO_HMAC
    60 int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
    61 void crypto_free_hmac_block(struct crypto_tfm *tfm);
    62 #else
    63 static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
    64 {
    65 return 0;
    66 }
    67
    68 static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
    69 { }
    70 #endif
    71
    72 #ifdef CONFIG_PROC_FS
    73 void __init crypto_init_proc(void);
    74 #else
    75 static inline void crypto_init_proc(void)
    76 { }
    77 #endif
    78
    79 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
    80 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
    81 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
    82
    83 int crypto_init_digest_ops(struct crypto_tfm *tfm);
    84 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
    85 int crypto_init_compress_ops(struct crypto_tfm *tfm);
    86
    87 void crypto_exit_digest_ops(struct crypto_tfm *tfm);
    88 void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
    89 void crypto_exit_compress_ops(struct crypto_tfm *tfm);
    90
    91 #endif /* _CRYPTO_INTERNAL_H */
    92