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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: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2022-11-25 12:36:37 +08:00
parent b5f755fbd5
commit 12658ac5e6
1 changed files with 22 additions and 0 deletions
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22
include/crypto/internal/skcipher.h
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@ -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;