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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/hmac.c
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@@ -172,15 +172,16 @@ static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
static int hmac_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_hash *hash;
struct crypto_instance *inst = (void *)tfm->__crt_alg;
struct crypto_spawn *spawn = crypto_instance_ctx(inst);
struct hmac_ctx *ctx = hmac_ctx(__crypto_hash_cast(tfm));
tfm = crypto_spawn_tfm(spawn);
if (IS_ERR(tfm))
return PTR_ERR(tfm);
hash = crypto_spawn_hash(spawn);
if (IS_ERR(hash))
return PTR_ERR(hash);
ctx->child = crypto_hash_cast(tfm);
ctx->child = hash;
return 0;
}