Commit 4ac33776 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: akcipher - Add ctx helpers with DMA alignment 



This patch adds helpers to access the akcipher context structure and
request context structure with an added alignment for DMA access.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 1c799571

include/crypto/internal/akcipher.h

+23 −1
Original line number Diff line number Diff line
@@ -33,15 +33,37 @@ static inline void *akcipher_request_ctx(struct akcipher_request *req) 
	return req->__ctx;

}



static inline void *akcipher_request_ctx_dma(struct akcipher_request *req)

{

	unsigned int align = crypto_dma_align();



	if (align <= crypto_tfm_ctx_alignment())

		align = 1;



	return PTR_ALIGN(akcipher_request_ctx(req), align);

}



static inline void akcipher_set_reqsize(struct crypto_akcipher *akcipher,

					unsigned int reqsize)

{

	akcipher->reqsize = reqsize;

}



static inline void akcipher_set_reqsize_dma(struct crypto_akcipher *akcipher,

					    unsigned int reqsize)

{

	reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);

	akcipher->reqsize = reqsize;

}



static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)

{

	return tfm->base.__crt_ctx;

	return crypto_tfm_ctx(&tfm->base);

}



static inline void *akcipher_tfm_ctx_dma(struct crypto_akcipher *tfm)

{

	return crypto_tfm_ctx_dma(&tfm->base);

}



static inline void akcipher_request_complete(struct akcipher_request *req,