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authorHerbert Xu <herbert@gondor.apana.org.au>2015-08-20 17:02:40 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-08-21 22:21:20 +0800
commitd4421c54c45f643731c92daa8e268ce74dcdf5a2 (patch)
treef4fe2abda7788a5d524db09d507addb6f28e48b3 /include/crypto
parent12773d932fc22c60e0d5a20660d564542fab811b (diff)
downloadlinux-d4421c54c45f643731c92daa8e268ce74dcdf5a2.tar.bz2
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>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/hash.h5
1 files changed, 5 insertions, 0 deletions
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