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crypto: rng - Remove old low-level rng interface

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Now that all rng implementations have switched over to the new
interface, we can remove the old low-level interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2015-04-21 10:46:46 +08:00
parent e33cf2c5aa
commit 94f1bb15be
4 changed files with 8 additions and 92 deletions
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57
crypto/rng.c
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@@ -4,6 +4,7 @@
* RNG operations.
*
* Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
* Copyright (c) 2015 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
@@ -36,39 +37,6 @@ static inline struct crypto_rng *__crypto_rng_cast(struct crypto_tfm *tfm)
return container_of(tfm, struct crypto_rng, base);
}
static inline struct old_rng_alg *crypto_old_rng_alg(struct crypto_rng *tfm)
{
return &crypto_rng_tfm(tfm)->__crt_alg->cra_rng;
}
static int generate(struct crypto_rng *tfm, const u8 *src, unsigned int slen,
u8 *dst, unsigned int dlen)
{
return crypto_old_rng_alg(tfm)->rng_make_random(tfm, dst, dlen);
}
static int rngapi_reset(struct crypto_rng *tfm, const u8 *seed,
unsigned int slen)
{
u8 *buf = NULL;
u8 *src = (u8 *)seed;
int err;
if (slen) {
buf = kmalloc(slen, GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, seed, slen);
src = buf;
}
err = crypto_old_rng_alg(tfm)->rng_reset(tfm, src, slen);
kzfree(buf);
return err;
}
int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
{
u8 *buf = NULL;
@@ -83,7 +51,7 @@ int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
seed = buf;
}
err = tfm->seed(tfm, seed, slen);
err = crypto_rng_alg(tfm)->seed(tfm, seed, slen);
kfree(buf);
return err;
@@ -92,21 +60,6 @@ EXPORT_SYMBOL_GPL(crypto_rng_reset);
static int crypto_rng_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_rng *rng = __crypto_rng_cast(tfm);
struct rng_alg *alg = crypto_rng_alg(rng);
struct old_rng_alg *oalg = crypto_old_rng_alg(rng);
if (oalg->rng_make_random) {
rng->generate = generate;
rng->seed = rngapi_reset;
rng->seedsize = oalg->seedsize;
return 0;
}
rng->generate = alg->generate;
rng->seed = alg->seed;
rng->seedsize = alg->seedsize;
return 0;
}
@@ -114,8 +67,7 @@ static unsigned int seedsize(struct crypto_alg *alg)
{
struct rng_alg *ralg = container_of(alg, struct rng_alg, base);
return alg->cra_rng.rng_make_random ?
alg->cra_rng.seedsize : ralg->seedsize;
return ralg->seedsize;
}
#ifdef CONFIG_NET
@@ -150,7 +102,7 @@ static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg)
seq_printf(m, "seedsize : %u\n", seedsize(alg));
}
const struct crypto_type crypto_rng_type = {
static const struct crypto_type crypto_rng_type = {
.extsize = crypto_alg_extsize,
.init_tfm = crypto_rng_init_tfm,
#ifdef CONFIG_PROC_FS
@@ -162,7 +114,6 @@ const struct crypto_type crypto_rng_type = {
.type = CRYPTO_ALG_TYPE_RNG,
.tfmsize = offsetof(struct crypto_rng, base),
};
EXPORT_SYMBOL_GPL(crypto_rng_type);
struct crypto_rng *crypto_alloc_rng(const char *alg_name, u32 type, u32 mask)
{