* Cryptographic API.
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
#include <linux/highmem.h>
#include <linux/interrupt.h>
#include <linux/init.h>
-#include <linux/kmod.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/rwsem.h>
+#include <linux/slab.h>
#include <asm/kmap_types.h>
+extern struct list_head crypto_alg_list;
+extern struct rw_semaphore crypto_alg_sem;
+
extern enum km_type crypto_km_types[];
static inline enum km_type crypto_kmap_type(int out)
static inline void crypto_yield(struct crypto_tfm *tfm)
{
- if (!in_atomic())
+ if (tfm->crt_flags & CRYPTO_TFM_REQ_MAY_SLEEP)
cond_resched();
}
-static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
-{
- return (void *)&tfm[1];
-}
-
-struct crypto_alg *crypto_alg_lookup(const char *name);
-
-/* A far more intelligent version of this is planned. For now, just
- * try an exact match on the name of the algorithm. */
-static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
-{
- return try_then_request_module(crypto_alg_lookup(name), name);
-}
-
#ifdef CONFIG_CRYPTO_HMAC
int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
void crypto_free_hmac_block(struct crypto_tfm *tfm);
{ }
#endif
+static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
+ int flags)
+{
+ return alg->cra_ctxsize;
+}
+
+static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg,
+ int flags)
+{
+ unsigned int len = alg->cra_ctxsize;
+
+ switch (flags & CRYPTO_TFM_MODE_MASK) {
+ case CRYPTO_TFM_MODE_CBC:
+ len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
+ len += alg->cra_blocksize;
+ break;
+ }
+
+ return len;
+}
+
+static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg,
+ int flags)
+{
+ return alg->cra_ctxsize;
+}
+
int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);