From d4421c54c45f643731c92daa8e268ce74dcdf5a2 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 20 Aug 2015 17:02:40 +0800 Subject: 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 --- include/crypto/hash.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/crypto/hash.h') diff --git a/include/crypto/hash.h b/include/crypto/hash.h index 57c8a6ee33c2..8e920b44c0ac 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -63,6 +63,11 @@ struct ahash_request { 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 * @init: Initialize the transformation context. Intended only to initialize the -- cgit