[PATCH] crypto: hash - Add AHASH_REQUEST_ON_STACK
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2015-08-20 09:02:44
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
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> --- include/crypto/hash.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 57c8a6e..8e920b4 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
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Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt