From e634ac4a8aaab37bdc69177df9b40acf92eccc6d Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Fri, 25 Nov 2022 12:36:31 +0800 Subject: crypto: api - Add crypto_tfm_ctx_dma This patch adds the helpers crypto_tfm_ctx_aligned and crypto_tfm_ctx_dma. The first aligns the tfm context to the value cra_alignmask. The second sets the alignment according to dma_cache_get_alignment(); This patch also moves crypto_tfm_ctx into algapi.h. Signed-off-by: Herbert Xu --- include/crypto/algapi.h | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) (limited to 'include/crypto') diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index f50c5d1725da..4c99eb66e654 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -7,6 +7,7 @@ #ifndef _CRYPTO_ALGAPI_H #define _CRYPTO_ALGAPI_H +#include #include #include #include @@ -25,6 +26,14 @@ #define MAX_CIPHER_BLOCKSIZE 16 #define MAX_CIPHER_ALIGNMASK 15 +#ifdef ARCH_DMA_MINALIGN +#define CRYPTO_DMA_ALIGN ARCH_DMA_MINALIGN +#else +#define CRYPTO_DMA_ALIGN CRYPTO_MINALIGN +#endif + +#define CRYPTO_DMA_PADDING ((CRYPTO_DMA_ALIGN - 1) & ~(CRYPTO_MINALIGN - 1)) + struct crypto_aead; struct crypto_instance; struct module; @@ -189,10 +198,38 @@ static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2, } } +static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm) +{ + return tfm->__crt_ctx; +} + +static inline void *crypto_tfm_ctx_align(struct crypto_tfm *tfm, + unsigned int align) +{ + if (align <= crypto_tfm_ctx_alignment()) + align = 1; + + return PTR_ALIGN(crypto_tfm_ctx(tfm), align); +} + static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm) { - return PTR_ALIGN(crypto_tfm_ctx(tfm), - crypto_tfm_alg_alignmask(tfm) + 1); + return crypto_tfm_ctx_align(tfm, crypto_tfm_alg_alignmask(tfm) + 1); +} + +static inline unsigned int crypto_dma_align(void) +{ + return CRYPTO_DMA_ALIGN; +} + +static inline unsigned int crypto_dma_padding(void) +{ + return (crypto_dma_align() - 1) & ~(crypto_tfm_ctx_alignment() - 1); +} + +static inline void *crypto_tfm_ctx_dma(struct crypto_tfm *tfm) +{ + return crypto_tfm_ctx_align(tfm, crypto_dma_align()); } static inline struct crypto_instance *crypto_tfm_alg_instance( -- cgit v1.2.3