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crypto: hash - Add AHASH_REQUEST_ON_STACK 

This patch adds the helper AHASH_REQUEST_ON_STACK for those users
of ahash that are synchronous only.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-08-20 17:02:40 +08:00
parent 12773d932f
commit d4421c54c4
1 changed files with 5 additions and 0 deletions
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5
include/crypto/hash.h
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@ -63,6 +63,11 @@ struct ahash_request {
void *__ctx[] CRYPTO_MINALIGN_ATTR; void *__ctx[] CRYPTO_MINALIGN_ATTR;
}; };
#define AHASH_REQUEST_ON_STACK(name, ahash) \
char __##name##_desc[sizeof(struct ahash_request) + \
crypto_ahash_reqsize(ahash)] CRYPTO_MINALIGN_ATTR; \
struct ahash_request *name = (void *)__##name##_desc
/** /**
* struct ahash_alg - asynchronous message digest definition * struct ahash_alg - asynchronous message digest definition
* @init: Initialize the transformation context. Intended only to initialize the * @init: Initialize the transformation context. Intended only to initialize the