From 12658ac5e612214023c26f0689e6bbe8bbea0871 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Fri, 25 Nov 2022 12:36:37 +0800 Subject: 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 --- include/crypto/internal/skcipher.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/crypto/internal') diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h index 2a97540156bb..06d0a5491cf3 100644 --- a/include/crypto/internal/skcipher.h +++ b/include/crypto/internal/skcipher.h @@ -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; -- cgit v1.2.3