Commit 12658ac5 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: skcipher - Add ctx helpers with DMA alignment 



This patch adds helpers to access the skcipher 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 b5f755fb

include/crypto/internal/skcipher.h

+22 −0
Original line number Diff line number Diff line
@@ -130,6 +130,13 @@ static inline void crypto_skcipher_set_reqsize( 
	skcipher->reqsize = reqsize;

}



static inline void crypto_skcipher_set_reqsize_dma(

	struct crypto_skcipher *skcipher, unsigned int reqsize)

{

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

	skcipher->reqsize = reqsize;

}



int crypto_register_skcipher(struct skcipher_alg *alg);

void crypto_unregister_skcipher(struct skcipher_alg *alg);

int crypto_register_skciphers(struct skcipher_alg *algs, int count);
@@ -159,11 +166,26 @@ static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm) 
	return crypto_tfm_ctx(&tfm->base);

}



static inline void *crypto_skcipher_ctx_dma(struct crypto_skcipher *tfm)

{

	return crypto_tfm_ctx_dma(&tfm->base);

}



static inline void *skcipher_request_ctx(struct skcipher_request *req)

{

	return req->__ctx;

}



static inline void *skcipher_request_ctx_dma(struct skcipher_request *req)

{

	unsigned int align = crypto_dma_align();



	if (align <= crypto_tfm_ctx_alignment())

		align = 1;



	return PTR_ALIGN(skcipher_request_ctx(req), align);

}



static inline u32 skcipher_request_flags(struct skcipher_request *req)

{

	return req->base.flags;