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[CRYPTO] api: Add type-safe spawns

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This patch allows spawns of specific types (e.g., cipher) to be allocated.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2006-12-17 10:05:58 +11:00
parent f1ddcaf339
commit 2e306ee016
8 changed files with 61 additions and 28 deletions
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9
crypto/xcbc.c
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@@ -254,14 +254,15 @@ static int crypto_xcbc_digest(struct hash_desc *pdesc,
static int xcbc_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_cipher *cipher;
struct crypto_instance *inst = (void *)tfm->__crt_alg;
struct crypto_spawn *spawn = crypto_instance_ctx(inst);
struct crypto_xcbc_ctx *ctx = crypto_hash_ctx_aligned(__crypto_hash_cast(tfm));
int bs = crypto_hash_blocksize(__crypto_hash_cast(tfm));
tfm = crypto_spawn_tfm(spawn);
if (IS_ERR(tfm))
return PTR_ERR(tfm);
cipher = crypto_spawn_cipher(spawn);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
switch(bs) {
case 16:
@@ -271,7 +272,7 @@ static int xcbc_init_tfm(struct crypto_tfm *tfm)
return -EINVAL;
}
ctx->child = crypto_cipher_cast(tfm);
ctx->child = cipher;
ctx->odds = (u8*)(ctx+1);
ctx->prev = ctx->odds + bs;
ctx->key = ctx->prev + bs;