This patch adds helpers to access the aead context structure and
request context structure with an added alignment for DMA access.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
include/crypto/internal/aead.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h
index d482017f3e20..cd8cb1e921b7 100644
--- a/include/crypto/internal/aead.h
+++ b/include/crypto/internal/aead.h
@@ -39,6 +39,11 @@ static inline void *crypto_aead_ctx(struct crypto_aead *tfm)
return crypto_tfm_ctx(&tfm->base);
}
+static inline void *crypto_aead_ctx_dma(struct crypto_aead *tfm)
+{
+ return crypto_tfm_ctx_dma(&tfm->base);
+}
+
static inline struct crypto_instance *aead_crypto_instance(
struct aead_instance *inst)
{
@@ -65,6 +70,16 @@ static inline void *aead_request_ctx(struct aead_request *req)
return req->__ctx;
}
+static inline void *aead_request_ctx_dma(struct aead_request *req)
+{
+ unsigned int align = crypto_dma_align();
+
+ if (align <= crypto_tfm_ctx_alignment())
+ align = 1;
+
+ return PTR_ALIGN(aead_request_ctx(req), align);
+}
+
static inline void aead_request_complete(struct aead_request *req, int err)
{
req->base.complete(&req->base, err);
@@ -108,6 +123,13 @@ static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
aead->reqsize = reqsize;
}
+static inline void crypto_aead_set_reqsize_dma(struct crypto_aead *aead,
+ unsigned int reqsize)
+{
+ reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
+ aead->reqsize = reqsize;
+}
+
static inline void aead_init_queue(struct aead_queue *queue,
unsigned int max_qlen)
{
